EP3052415B1 - Stacking device and method for uninterrupted stacks formation of continuously supplied pouches of a pouches chain - Google Patents

Stacking device and method for uninterrupted stacks formation of continuously supplied pouches of a pouches chain Download PDF

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Publication number
EP3052415B1
EP3052415B1 EP14762044.7A EP14762044A EP3052415B1 EP 3052415 B1 EP3052415 B1 EP 3052415B1 EP 14762044 A EP14762044 A EP 14762044A EP 3052415 B1 EP3052415 B1 EP 3052415B1
Authority
EP
European Patent Office
Prior art keywords
stack
stacking
bags
movement
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14762044.7A
Other languages
German (de)
French (fr)
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EP3052415A1 (en
Inventor
Wolfgang Reichelt
Maik LAMPRECHT
Uwe Jansen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Syntegon Packaging Systems AG
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3052415A1 publication Critical patent/EP3052415A1/en
Application granted granted Critical
Publication of EP3052415B1 publication Critical patent/EP3052415B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00Folding thin material
    • B65H45/02Folding limp material without application of pressure to define or form crease lines
    • B65H45/06Folding webs
    • B65H45/10Folding webs transversely
    • B65H45/101Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B5/00Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/06Packaging groups of articles, the groups being treated as single articles
    • B65B5/061Filled bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B63/00Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/04Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for folding or winding articles, e.g. gloves or stockings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/30Arrangements for removing completed piles
    • B65H31/3009Arrangements for removing completed piles by dropping, e.g. removing the pile support from under the pile
    • B65H31/3018Arrangements for removing completed piles by dropping, e.g. removing the pile support from under the pile from opposite part-support elements, e.g. operated simultaneously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/30Arrangements for removing completed piles
    • B65H31/3054Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
    • B65H31/3063Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers by special supports like carriages, containers, trays, compartments, plates or bars, e.g. moved in a closed loop
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/30Arrangements for removing completed piles
    • B65H31/3081Arrangements for removing completed piles by acting on edge of the pile for moving it along a surface, e.g. by pushing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H37/00Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/06Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for folding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/19Specific article or web
    • B65H2701/191Bags, sachets and pouches or the like

Definitions

  • a stacking device for the continuous formation of stacks from at least one bag of endless bags having at least one row of bags and / or continuously fed after each set number of bags, with at least one, at least during the formation of a stack in a direction parallel to a stacking layer direction Stacking movement of the stacking pad back and forth, with a bag feed means which deposits the at least one bag strand on the stacking pad in such a way that the bag strand bends and forms zigzag-shaped stacking layers due to the stacking movement after each number of bags forming a stacking layer, or that the bag strand forms in stacking layers due to the stacking movement the number of bags forming the stack layer is stacked with a matching bag orientation, and with at least one stack transport means for transporting the stack after reaching a fixed number of stack layers from the Area of influence of the stack movement has been proposed.
  • the invention is based on a stacking device for the continuous formation of stacks from at least one endless and / or continuously fed pouches having at least one row of pouches, with at least one pouch, at least during the formation of a stack in one to one Stacking layer direction, parallel stacking movement of the stacking back and forth, with a bag feed means that deposits the at least one bag strand on the stacking base in such a way that the bag strand kinks at least essentially due to the stacking movement after a number of bags forming a stacking layer and forms zigzag-shaped stacking layers or that the bag strand at least in the Essentially due to the stacking movement in stacking layers, the number of bags forming the stacking layer is matched with the same bag orientation, and with at least one stack transport means for transporting the stack after reaching a fixed number of stacking layers from the area of influence of the stacking movement.
  • a first drive unit is provided at least for driving the stack movement and a further drive unit is provided for driving at least one transport movement of at least one stack transport means.
  • a “bag strand” is to be understood in particular to mean a strand of coherent bags, which are preferably connected to one another at their ends with common sealing seams.
  • the sealing seams preferably have perforations in the middle between two bags in order to make it easier for a user to separate the bags.
  • the strand of bags can in particular be produced and filled on a flat bag and / or stick pack machine. Such strands of bags and packaging machines are known to the person skilled in the art.
  • the bags are preferably of flat design, that is to say their width and length are at least twice as large as their thickness perpendicular to a feed direction of the bag strand. Strands of bags or a strand of bags can have different types of bags.
  • a “bag row” is to be understood to mean a plurality of bags of a bag strand which are arranged one behind the other in the bag strand in the feed direction of the bag strand.
  • a “fixed number” is to be understood in particular as a number which is fixed in accordance with a desired stack configuration. The number can in particular be part of a parameter set that describes the stack to be formed by the stacking device. The parameter set can preferably be stored on a control unit of the stacking device or on a packaging machine having the stacking device. It may also be possible that the specified number is determined and / or varied by a user or an upstream process. It may be possible that the specified number is redefined for each stack and / or each stack position.
  • a “fixed number of bags” is to be understood in particular to mean that a number of bags, after which the strand of bags is cut, is fixed in accordance with the desired stack configuration.
  • the Specified number of bags, after which the at least one strand of bags is severed can in particular vary depending on the stack position and / or with each stack. In particular, in the case of a stack which has a plurality of bag strands, the bag strands can be severed according to different bag numbers. It may also be possible for a stack layer to have a plurality of bag strands in the stack layer direction. A stack position can be started with one strand of bags and ended with at least one further strand of bags. Different types of bags can advantageously be placed in a stack.
  • the specified number of stack layers of successive stacks varies and / or the number of stack layers of the stacks is determined anew before and / or during stack formation.
  • “continuously fed” is to be understood in particular to mean that a feed movement in which the bag strand is transported is uninterrupted, in particular free from standstill.
  • a feed speed, particularly caused by an upstream packaging process can preferably vary continuously.
  • a “stack layer direction” is to be understood in particular to mean a direction which is on average parallel to the row of bags or the rows of bags of the at least one strand of bags in a stack layer.
  • a “bag feeding means” is to be understood in particular to mean a device which feeds the bag strand at the feeding speed in the direction of the stacking base.
  • the bag feed means can have, for example, a band edge, pairs of rollers and / or other means which are suitable for feeding a strand of bags.
  • the bag feed means can have a deflection device, in particular at least one swivel plate, which is provided to deflect the bag strand in a direction transverse to the stack layer direction and transverse to the feed direction and / or a weight. It may be possible to form several stacks next to one another transversely to the stack layer direction and transversely to the feed direction and / or weight.
  • the deflection device can deflect the bag strand in such a way that it is placed on the stack currently being formed. Due to the stacking movement, the strand of bags can in each case bend after a number of bags forming a stacking layer and form zigzag-shaped stacking layers, or can be stacked in stacking layers with the number of bags forming the stacking layer with a matching bag orientation due to the stacking movement.
  • a deflection device in particular at least one swivel plate, can preferably be arranged in such a way that the kinking and / or stacking of the bag strand is supported in the formation of the stack layers. In particular, the deflection device to be provided to deflect the strand of bags in and against the direction of the stacking layers.
  • the deflection device together with the stacking movement of the stacking base, can cause the stack to kink and / or stack up in stacked layers.
  • the kinking and / or stacking can preferably take place at least essentially by the stacking movement.
  • “at least essentially” is to be understood in particular to mean that a relative movement of the bag strand with respect to the stacking base mainly results from the stacking movement.
  • the bag feed means can preferably have separating means, such as for example squeezing knives, in order to separate the bag strand according to the specified number of bags.
  • the strand of bags can be severed in an upstream process, in particular in a sealing process for forming sealed seams of the bags.
  • the individual stack layers of a stack can have the same number of bags. However, it is also possible to form stacks with stack layers that have a different number of bags. In particular, the number of bags can decrease with each stack layer or the stack layers can alternately have a larger and a smaller number of bags. In particular, the stack layers with a different number of bags can have an offset, in particular by half a bag length.
  • the stacking layers can be stacked in such a way that the center of the pouches of the pouches of one layer lies between the center of the pouches in the area of the sealing seams of the pouches of another layer.
  • the bags can be stacked particularly compactly.
  • stacking layers may also be stacked, in particular by half a bag width, transversely to the stacking layer direction and feed direction and / or weight.
  • long, narrow bags such as "stick packs” can be stacked in a particularly compact manner with an offset transverse to the stacking layer direction and feeding direction and / or weight.
  • zigzag stacking layers are to be understood in particular as stacking layers of a stack that is folded from a coherent zigzag-shaped strand of bags.
  • a stack with stack layers with "matching bag orientation” is to be understood in particular as a stack with stack layers in which the strand of bags is cut after each stack layer and the stack layers are stacked up in such a way that the bags are each stacked in a uniform orientation.
  • printed front sides of the bags can be oriented in the direction of a top side of the stack facing away from the weight.
  • a “front side” of a bag should in particular be understood to mean a side of the bag that leads to a product presentation is provided and in particular has a product name, a product brand or similar characteristics and which is to be presented to a customer first when opening a package containing the bags.
  • transport “from the area of influence of the stack movement” is to be understood in particular to mean that the stack movement for forming the next stack is no longer transferred to the stack. This can be done in that the stack is not in contact with the stacking pad or in that the other stacking pad is used to form the next stack and the stacking pad carrying the stack while it is in contact with the stack is free from the stacking movement of the next one Stack remains.
  • a first drive unit and a second drive unit continuous stack formation may be possible.
  • One drive unit can drive the stack movement, while a second drive unit drives the transport movement in order to transport a stack out of the area of influence of the stack movement.
  • a drive unit can drive the stacking movement for stacking a stack and subsequently the transport movement for transporting the stack of a first stacking unit and a first transport unit, while the further drive unit drives the stacking movement for forming the next stack and subsequently the transport movement for transporting the further stack drives another stacking unit and a further transport unit.
  • the string of bags can be fed continuously. Stopping the string of bags and / or an upstream process for producing the string of bags between the formation of two stacks can be avoided.
  • a control unit which is provided to determine a stroke and / or a speed of the stacking movement in at least one operating mode depending on a number of bags and / or a length of a stacking layer in the stacking layer direction, a feed speed of the bag strand and / or an achieved stacking height of the stack to control.
  • the stack movement can advantageously be adapted to the stack height reached. In particular, as the stack height increases, a distance between the bag feed means and the top of the stack facing the bag feed means can become smaller. An advantageous stroke of the stacking movement to form the next stacking layer can be larger as the distance becomes smaller.
  • the control unit can advantageously set the stacking movement. It is possible for the stack layers to have different bag strand lengths and / or bag numbers.
  • the number of bags, after which the strand of bags kinks to form a stacking layer can be influenced by the stroke and / or the speed of the stacking movement.
  • the stacking device can be particularly efficient and / or flexible. Stacks with stack layers with a different number of bags can be formed. Influences of the stack height and / or the distance from the top of the stack to the bag feed means can be compensated.
  • At least one of the drive units is provided for driving a stacking movement and a transport movement.
  • At least the first drive unit is preferably used to drive a first stacking movement and a first transport movement and the second drive unit is provided to drive a second stacking movement and a second transport movement.
  • the first and the second stacking movements and the first and the second transporting movements are preferably provided alternately to form a stack and a further stack.
  • the transport movement of a stack can advantageously take place independently of the stack movement of the next stack.
  • the stacking device advantageously has at least two stack supports and at least two stack transport means, stack supports and stack transport means each forming stack carriers which can be driven by a common drive unit.
  • the stacks can each be formed on the stack carrier and transported away from the stack carrier in a next step, while a next stack is formed on another stack carrier.
  • the stack carriers are driven by at least two independent drive units.
  • the stack carriers can be driven by a rotating linear motor system.
  • a circumferential guide can have a secondary part or preferably a primary part of the linear motor system.
  • the stack carriers can have primary parts or preferably secondary parts of the linear motor system and can be driven independently.
  • the stack carriers can be arranged on at least two independently driven, rotating elements, in particular belts or chains, and driven in one rotation.
  • a rotating element can preferably drive at least one, particularly preferably at least two stack carriers.
  • a rotating element can transport a stack to a stack transfer position by means of a stack carrier, and a further stack carrier in a direction opposite to the transport direction in which the stacks are transported away, to a stack formation area in which another stack is currently being driven on by a further rotating element Stack carrier is formed, transport the adjacent area.
  • the stack carriers are preferably formed in the transport direction by articulated and / or elastic segments. A deflection of the stack carriers at deflection points of the rotating linear motor system and / or the rotating elements by a radius can be simplified.
  • the further rotating element can meanwhile drive the stack carriers arranged on this rotating element in the stack movement, the stack being formed on the stack carrier, which is located in the stack formation area.
  • the rotating elements can alternately carry out the stack movement and form stacks on one of their stack carriers, which is located in the stack formation area, and transport stacks to the stack transfer position. Continuous stacking of stacks may be possible. It is also possible that, following the transport movement with which the stack is transported out of the stack formation area, the stack carriers carry out further movements. In particular, the stack carriers can be moved back and forth with a frequency that is higher than the stack movement in order to equalize the stack and / or bag of the stack and / or to reduce a stack height.
  • “equalizing” is to be understood in particular to mean that the contents packed in the bags are distributed evenly by the back and forth movement and / or that the stack layers are aligned in such a way that gaps in the stack are reduced. A maximum bag thickness of the bags can be reduced and / or a stack height can decrease.
  • the stack carriers can also move the stack in a movement synchronized with a further process step, in particular a printing process and / or a glue application.
  • the stack carriers and / or stop means of the stack carriers for a return transport of the stack carriers against the transport direction in which the stacks are transported are mounted on storage devices so that they can be pushed away and / or folded away from a transport region.
  • a “transport area” is to be understood in particular to mean an area which is used by further stack carriers and / or stacks during the stack formation and / or during the transport of stacks into the stack transfer position. It may be possible for stack carriers to move in the opposite direction to other stack carriers during return transport and to encounter them without collision. It may be possible that the stack carrier for the return transport from the transport area pushed away and / or folded away.
  • the stack supports of the stack carriers may also be possible for the stack supports of the stack carriers to be arranged in different levels and / or to be transferred to another level for the return transport, and for the lifting means of the stack carriers to be folded away or pushed away in such a way that the stack carrier which is intended for the return transport is is completely outside the transport area.
  • the stack carriers can advantageously be moved for the transport of stacks in the transport direction and for the return transport against the transport direction.
  • a circulation of the stack carrier can be omitted.
  • the stack carriers can preferably be driven by a flat linear motor system.
  • the stack carriers can have primary parts or preferably secondary parts of the linear motor system.
  • a guide unit can support the stack carriers and have a secondary part or preferably a primary part of the linear motor system.
  • the stack carriers can be driven independently by the linear motor system.
  • the stack carriers can be formed by two stop means, which are provided to limit the stack in each case at their opposite ends in the transport direction.
  • the sling means can each be driven independently.
  • the stop means can preferably each have primary parts or preferably secondary parts of the linear motor system. A distance between slings, which are provided to form a stack, can be changed.
  • the stop means which are provided to form a stack can preferably have stack support means, in particular interdigitated comb-like support extensions.
  • the stack support means can form stack supports.
  • a stack length can be changed by changing a spacing of stop means which are provided to form a stack.
  • the stacking device can be adapted to different lengths of stack layers.
  • the stack support means can be driven independently of the stop means.
  • the stack support means can have further primary parts or preferably secondary parts of the linear motor system. Distances between the slings and stacking supports can be set independently.
  • the stacking device can be particularly flexible.
  • the stop means of the stack carriers are mounted on storage devices so that they can be pushed away and / or folded away from the transport area of the stack in order to make it easier to push the stack off, in particular by means of a slide. Pushing and / or folding away the lifting means can further facilitate the circulation of the stack carriers at deflection points in the case of rotatingly driven stack carriers.
  • one of the drive units drives only the stacking movement or only the transport movement.
  • One of the drive units is preferably only intended to drive the stacking movement and one of the drive units is only intended to drive the transport movement.
  • a stack support can be driven by the one and a stack transport means can be driven by the further drive unit.
  • the stacking pad can execute stacking movements while the stack transport means transports finished stacks from the area of influence of the stacking movement to the stack transfer position. Continuous stacking can advantageously be possible.
  • the stack support be formed by a first belt element and the stack transport means by a further second belt element adjacent to the first belt element.
  • the band elements can adjoin one another with band ends of their band ends lying opposite one another.
  • One belt can carry out the stacking movement, while the second belt carries out the transport movement.
  • the first belt can interrupt the stack movement, briefly carry out a further transport movement in the transport direction and thus at least partially transfer the stack to the further belt.
  • the further belt transports the stack out of the area of influence of the stack movement of the first belt, while the first belt is driven again with the stack movement to form the next stack.
  • the stacking pad is formed by changing areas of the first band, each of which lies in the stacking area.
  • a period of time in which the first belt interrupts the stacking movement and carries out the further transport movement is preferably shorter than the period of time which an advance of the bag strand requires from the bag feed means with the feed movement to the stacking pad.
  • the bag feed means can have a storage function that makes it possible to briefly stop the continuously fed bag strand.
  • the further transport movement can already start the stack movement of the next stack, in that the bag strand is placed on the belt in the direction of the further transport movement and forms a first stack layer. Stopping the feed movement can be avoided. The stacking can take place continuously.
  • the stack transport means is intended to transport stacks from the stack formation area to a further transport unit.
  • the stack transport means can have a slide and / or gripper which grips the stack in the stack formation area on a side facing away from the transport direction and transports it to a further transport unit.
  • a “further transport unit” is to be understood in particular to mean a transport unit that takes over the stack and transports it to a next process step, such as in particular a further packaging process.
  • the stacking pad can carry out the stacking movement continuously. The stack can be transported out of the area of influence of the stack movement by the stack transport means. Continuous stacking may be possible. The stacking pad can carry out the stacking movement without interruption.
  • the stack support can form the stack transport means for transporting stacks and can be folded away under the stacks for transport in the direction of a weight and / or can be pulled away and / or pivoted away below the stack in the direction transverse to the weight.
  • the stacking pad can be designed as a trap door, in particular as a two-part trap door.
  • the stacking pad can execute the stacking movement to form the stack. Once the stack has been formed, the stacking pad can fold down, so that the weight falls through the opened trap door, which is designed as a stacking pad.
  • a slide or a similar suitable transport device is preferably arranged below the stacking base, which catches the falling stack and transports it to a further transport unit.
  • the stacking movement and the transporting movement, which pulls and / or folds away the stacking pad under the stack are preferably driven by the two separate drive units.
  • the bag feed means have a braking means which is intended to exert a braking force with at least one force component opposite to at least one direction of movement of the bag strand section in at least one operating state on at least one bag strand section of the bag strand.
  • a “bag strand section” of the bag strand is to be understood in particular to mean an end of the bag strand which is released onto the stack base in order to form a stack.
  • it can Separating means separate the section of bag strand from the strand of bag as soon as it comprises the number of bags intended for the stack to be formed.
  • a “direction of movement” of the bag strand is to be understood in particular to mean a direction of movement of the bag strand section at a contact point of the braking means with the bag strand caused by feeding the bag strand in the feed direction.
  • the braking means can preferably be arranged in the feed direction of the bag strand after the separating means.
  • the braking means can effectively delay a movement of the bag strand section in its direction of movement. In particular, it can be avoided that the bag strand section, after it has been separated from the bag strand, is released in an uncontrolled manner by the weight force and / or is dropped onto the stacking pad and / or falls onto the stacking pad at too high a speed.
  • the braking means is preferably mounted rotating about an axis.
  • the braking means can be designed as a rotating brush or, particularly preferably, as a roller.
  • the braking means can preferably be driven about its axis.
  • Drive means are particularly preferably provided to drive the braking means synchronously with the feed speed of the bag strand.
  • the separating means can preferably be formed by rotating crushing knives.
  • the squeezing knives and / or the braking means can preferably have a peripheral speed that is synchronous with the feeding speed.
  • the squeeze knives and / or the braking means can drive the bag string and / or the bag string section at the feed rate at the time the bag string is separated.
  • the braking means can preferably press onto the bag strand section with a pressing force against the swivel plate.
  • the pressing force can bring about an advantageous static friction between the bag strand section and the braking means.
  • the static friction between the braking means and the bag strand section can advantageously bring about the braking force.
  • the swivel plate can advantageously remain in a stack formation position during the stack formation. A distance between the brake means and the swivel plate during stack formation can be constant. A mounting of the brake means that can be moved back and forth with a movement of the swivel plate can be dispensed with.
  • the pivot plate can advantageously be pivoted from the stacking position into a discharge position. The discharge position can be provided to discharge defective bags into a waste container. In the eject position, the swivel plate can advantageously eject the bag strand section from the stacking device.
  • a packaging machine with a stacking device is also proposed.
  • the packaging machine can continuously form product stacks with the advantages mentioned.
  • a process for the continuous formation of stacks includes, in particular, that bags are continuously fed in at least one endless or at least one row of bags, or cut according to a specified number of bags, and are moved back and forth by the bag feed means to at least one, at least during the formation of a stack, in a stack movement parallel to a stack layer direction Moved stacking pad are placed so that the bag strand bends due to the stack movement after a number of bags forming a stack layer and forms zigzag-shaped stack layers, or that the bag strand is piled up in stack layers with the number of bags forming the stack layer with the same bag orientation and the stack with at least one Stack transport means for transporting the stack after reaching a fixed number of stack layers is brought out of the influence of the stack movement, a first drive unit driving the S tape movement and another drive unit drives a transport movement of at least one stack transport means.
  • the stacking device according to the invention is not intended to be limited to the application and embodiment described above.
  • the stacking device according to the invention can have a number that differs from a number of individual elements, components and units specified here in order to fulfill a function described here.
  • Figure 1 shows a schematic representation of a stacking device 10a for the continuous formation of stacks 12a from endless bags 18a having at least one, three bag rows 14a, continuous bag lines 16a, which are separated after a defined number of bags, with at least four bags during the formation of a stack 12a a stacking layer 24a, 24'a, which is parallel to a stacking layer direction 20a, with a bag feeding means 26a, which places the bag strand 16a on the stacking pad 24a, which is located in a stack formation area 62a, in such a way that the bag strand 16a respectively follows due to the stacking movement 22a kinks a number of bags forming a stacking layer 28a and forms zigzag-shaped stacking layers 28a, and with four stacking transport means 30a, 30'a for transporting the stack 12a after reaching a fixed number of stacking layers from the area of influence of the stacking movement 22a.
  • a first drive unit 32a is provided for driving the stacking movements 22a of two stacking pads 24a each. Furthermore, the first drive unit 32a is provided for driving transport movements 34a for transporting the stacks 12a through the two stack transport means 30a.
  • a second drive unit 32'a is for driving of transport movements 34'a for transporting the stacks 12a through the two stack transport means 30'a. Furthermore, the second drive unit 32'a is provided for driving stack movements 22'a of the two stacking pads 24'a.
  • the drive units 32a, 32'a are thus each provided to drive one of the stacking movements 22a, 22'a and one of the transport movements 34a, 34'a.
  • the stacking device 10a is part of a packaging machine 68a, which is only indicated here.
  • the bag strand 16a is discharged from the bag feed means 26a in the direction of a weight force 66a downward in a feed direction 70a in the direction of the stack formation area 62a.
  • the three rows of bags 14a of the bag strand 16a are separated, so that it forms three sub-strands. It is also possible for the rows of bags 14a to be coherent.
  • the bag feed means 26a has separating means (not shown in more detail) in order to cut the bag strand 16a transversely to the feed direction 70a after a fixed number of bags.
  • the number of bags can be identical or variable for each stack layer 28a.
  • 6 bags 18a each form a stack layer 28a, three bags 18a being arranged next to one another in rows of bags 14a transversely to the feed direction 70a and two bags 18a one behind the other in the feed direction 70a.
  • stack carriers 50a, 50'a form the four stack supports 24a, 24'a and the stack transport means 30a, 30'a, which are driven by the two drive units 32a, 32'a.
  • the drive units 32a, 32'a drive two rotating elements designed as belts 72a, 72'a.
  • the stack carriers 50a are arranged on the belt 72a and are driven by the drive unit 32a, the stack carriers 50'a are arranged on the belt 72'a and are driven by the drive unit 32'a.
  • the two stack carriers 50a and the two stack carriers 50'a are each offset on the respective belts 72a and 72'a by half a belt revolution.
  • the stack supports 24a, 24'a each have stop means 36a, 36'a, which the stacks 12a have on both sides of a transport direction 52a in a length 44a of one Limit and align the stacking layer 28a in the stacking layer direction 20a.
  • FIG. 1 there is currently a stack carrier 50a in the stack formation area 62a.
  • the stack carrier 50a is driven by the drive unit 32a with the stack movement 22a.
  • a stack 12a is formed on the stack base 24a of the stack carrier 50a.
  • the stack formation, as in Figure 1 are supported by a swivel plate 82a, which is moved back and forth in a swivel movement 84a and deflects the bag strand 16a in the stacking direction 20a. The deflection additionally increases a relative movement of the bag strand 16a to the stacking base 24a caused by the stacking movement 22a.
  • the further stack carrier 50a is located on a side of the rotating belt 72a opposite in the direction of the weight force 66a.
  • one of the stack carriers 50'a transports a stack 12a already formed on the stack support 24'a of the stack carrier 50'a in the transport movement 34a to a stack transfer position 74a.
  • the stack carriers 50a, 50'a with the stack supports 24a, 24'a and the stop means 36a, 36'a are formed by a plurality of articulated segments, not shown here, which are mounted on the belts 72a, 72'a.
  • the stack carrier 50'a is deflected in the area of the stack transfer position 74a.
  • the rear stop means 36'a in the transport direction 52a first dive downward in the direction of the weight 66a under the stack 12a.
  • a slide 76a pushes the stack 12a from the stack transfer position 74a towards a further transport unit 64a and / or to a downstream process step.
  • the stop means 36'a at the front in the transport direction 52a can also be submerged under the stack 12a in order to push the stack 12a away by the slide 76a in order to facilitate pushing off.
  • the geometry of the front stop means 36'a in the transport direction 52a and the slide 76a is designed such that the slide 76a can penetrate the stop means 36'a, so that the front stop means 36'a in the transport direction 52a does not submerge for pushing is required. As a result, the remaining parts of the stack carrier 50'a are deflected. These process steps are then repeated with the stack carrier 50a carrying the next stack 12a.
  • the further stack carrier 50'a is offset by half a length of the belt 72'a and adjoins the stack formation area 62a against the transport direction 52a.
  • the stack carrier 50a is driven in the transport movement 34a and the stack carrier 50'a is moved into the stack formation area 62a, where it is driven with the stack movement 22a and the next stack 12a is formed.
  • the stack movement 22a can also be controlled and the bag strand 16a can also be separated in such a way that the bag strand 16a is piled up in stack layers 28a with the number of bags forming the stack layer 28a with the same bag orientation due to the stack movement 22a.
  • a control unit 38a which controls the drive units 32a and 32'a.
  • the control unit 38a controls a stroke 40a and a speed 42a of the stacking movement 22a depending on the number of bags and the length 44a of a stack layer 28a in the stack layer direction 20a, a feed speed 46a of the bag strand 16a and an achieved stack height 48a of the stack 12a.
  • the stroke 40a of the stack movement 22a increases, the greater the stack height 48a and the smaller the remaining distance between stack 12a and bag feed means 26a.
  • FIG. 2 shows a stacking device 10b in a second embodiment.
  • the stacking device 10b of the second exemplary embodiment differs from the stacking device 10a in particular in that two stack carriers 50b, 50'b are each arranged on a linear motor 80b, 80'b of a linear motor system 78b.
  • the linear motors 80b, 80'b form drive units 32b, 32'b and can be driven independently.
  • the stack carriers 50b, 50'b are displaceably mounted in the direction of a weight 66b and stop means 36b, 36'b are arranged on storage devices 54b on stacking supports 24b, 24'b so that the stack carriers 50b, 50'b are parallel to one another Transport direction 52b folded away stop means 36b, 36b 'from a transport area 56b in which stacks 12b are transported can be pushed away.
  • a stack 12b is formed on the stack carrier 50b, while the stack carrier 50'b delivers a further stack 12b in a stack transfer position 74b, supported by a slide 76b, to a further transport unit 64b.
  • the stack carrier 50'b is then moved counter to the transport direction 52b into a position in which it adjoins a stack formation area 62b on the side opposite the transport direction 52b.
  • the stop means 36'b are folded away into a position parallel to the transport direction 52b and the stack carrier 50'b out of the Transport area 56b pushed in the direction of weight 66b.
  • the stop means 36'b are then opened again and the stack carrier 50'b is pushed back against the weight 66b, and the stack carrier 50'b is moved into the stack formation area 62b to form the next stack 12b as soon as the stack carrier 50b opens the stack formation area 62b completed stack 12b formed from the stack carrier 50b.
  • the stack carrier 50b, 50'b which is located in the stack formation region 62b, is driven with a stack movement 22b, as in the first exemplary embodiment.
  • FIG. 3 shows a stacking device 10c in a third embodiment.
  • the stacking device 10c of the third exemplary embodiment differs from the stacking device 10a in particular in that a stacking movement 22c and a transport movement 34c are driven by independent drive units 32c, 32'c.
  • a stacking pad 24c and a stacking means 30c are formed by two adjoining band elements 58c, 60c.
  • the belt element 58c forms a stacking belt and the belt element 60c forms a conveyor belt.
  • the belt element 58c is driven in the stacking movement 22c.
  • the belt element 58c is briefly moved in the direction of the belt element 60c until a stack 12c which has just been formed rests on the belt element 60c far enough that the belt element 60c takes over the stack 12c and in the transport movement 34c to one Transport unit 64c transported.
  • the belt element 58c is driven again with the stacking movement 22c.
  • the next stack 12c is formed in the area of the band element 58c which has now come to rest in a stationary stack formation area 62c.
  • This region of the band element 58c forms the stack base 24c, the region being able to be formed in each case on changing sections of the band element 58c. A return movement of the band element 58c is therefore not necessary.
  • the interruption of the stack movement 22c for moving the stack 12c to the belt element 60c is therefore short enough that a bag feed means 26c for stack formation can continuously deliver a bag strand 16c.
  • FIG. 4 shows a stacking device 10d in a fourth embodiment.
  • the stacking device 10d of the fourth exemplary embodiment differs from the stacking device 10c of the third exemplary embodiment in particular in that a stack transport means 30d formed by a slide 76d is provided for transporting stack 12d from a stack formation area 62d to a further transport unit 64d.
  • a stacking base 24d is formed by a plate which is driven to oscillate in a stacking movement 22d. If a stack 12d with a fixed number of stack layers is stacked, the separately driven slide 76d pushes the stack 12d in a transport movement 34d onto the further transport unit 64d designed as a belt. At the same time, the formation of the next stack 12d begins on the stack support 24d.
  • the stacking base 24d is mounted displaceably in the direction of a weight 66d.
  • the stack support 24d is shifted with each newly formed stack layer 28d by a height of the stack layer 28d formed in the direction of the weight 66d.
  • a distance between a stack top of the stack 12d and a bag feed means 26d can remain constant so that conditions under which a bag strand 16d kinks in a zigzag fashion remain unchanged.
  • FIG. 5 shows a stacking device 10e in a fifth embodiment.
  • the stacking device 10e of the fifth exemplary embodiment differs from the stacking device 10d of the fourth exemplary embodiment in particular in that a stacking support 24e forms a stack transport means 30e for transporting stacks 12e and is mounted so that it can be folded away under the stacks 12e for transport in the direction of a weight 66e.
  • the stack support 24e is moved in a stacking movement 22e.
  • the stacking base 24e which is divided along a center line parallel to the stacking movement 22e, is folded down on both sides in a transport movement 34e and thus forms the stack transport means 30e for transporting the stack 12e in the direction of the weight 66e. Due to the weight force 66e, the stack 12e falls on a further transport means 64e and is transported by this to a next process step. Optionally, the stack 12e can fall into a container arranged below the stack support 24e and / or the further transport means 64e can transport containers into which the stack 12e falls. The stacking pad 24e is then folded back so that a next stack 12e can be formed.
  • the transport movement 34e is sufficiently fast that a bag feed means 26e can continuously deliver a bag strand 16e for stack formation.
  • the stacking movement 22e is driven independently by a drive unit 32e and the transport movement 34e is driven by a drive unit 32'e.
  • the stacking base 24e can be mounted displaceably in the direction of the weight 66e.
  • FIG. 6 shows a schematic representation of a bag feed means 26f of a stacking device 10f for the continuous formation of stacks 12f in a sixth embodiment.
  • the bag feed means 26f differs from the bag feed means 26a-e of the previous exemplary embodiments in particular in that it has a braking means 86f which is provided, in at least one operating state, for braking force 90f with at least one direction of movement 92f on at least one bag strand section 88f of a bag strand 16f of the bag strand section 88f to exert an opposite force component.
  • the braking means 86f can effectively prevent that the bag strand section 88f separated by separating means 96f falls onto the stack 12f or a stacking base 24f in an uncontrolled manner.
  • the bag feed means 26f can advantageously be used in the stacking devices 10a-e instead of the bag feed means 26a-e described in the exemplary embodiments.
  • the bag strand 16f is transported between two driven transport rollers 94f in a feed direction 70f at a feed speed 46f in the direction of a stack formation area 62f.
  • the bag strand 16f is subsequently guided between two rotating separating means 96f, each of which has a squeezing knife 98f in its circumference.
  • the separating means 96f separate the bag strand section 88f from the bag strand 16f as soon as it has reached a desired number of bags for the stack 12f.
  • the brake means 86f has a rubberized brake roller 100f which is driven by a belt drive 102f at the same peripheral speed as the transport rollers 94f.
  • a pivot plate 82f In the operating state shown, in which stacks 12f are formed, a pivot plate 82f is in a stack formation position 104f. In contrast to the swivel plate 82a-e of the previous exemplary embodiments, the swivel plate 82f remains in this position. Should e.g. defective bags 18f are removed from the stacking device 10f, the pivot plate 82f can be pivoted into a discharge position, not shown here, in which the bag strand section 88f is directed in the direction of a waste container.
  • the brake roller 100f is arranged on a side of the bag strand section 88f opposite the swivel plate 82f in the stacking position 104f at a distance 106f which is somewhat smaller than an average bag thickness of the bags 18f.
  • the brake roller 100f thus presses the bags 18f of the bag strand section 88f at a contact point 108f of the brake roller 100f with a pressure force against the swivel plate 82f.
  • the rubber coating of the brake roller 100f causes fluctuations in the bag thickness to be compensated for.
  • the brake roller 100f can be spring-loaded in the direction of the distance 106f.
  • the brake roller 100f can exert the braking force 90f on the bag strand section 88f. If the bag strand section 88f is accelerated by a weight force 66f after it has been separated from the bag strand 16f by the separating means 96f, the brakes Brake roller 100f pulls off the bag strand section 88f by the braking force 90f in such a way that it moves in the direction of movement 92f synchronously with the transport rollers 94f at the feed speed 46f. The braking force 90f can also reverse its direction and accelerate the bag strand section 88f should it become slower than the feed speed 46f.
  • the brake roller 100f can be driven with a drive which is independent of the drive of the transport rollers 94f. It may also be possible that when the stack is formed, the swivel plate 82f is swung back and forth in a swivel movement, as in the previous exemplary embodiments shown.
  • the brake means 86f has bearing means which allow the brake roller 100f to be moved along with the pivoting movement of the pivot plate 82f in such a way that the distance 106f, at least when the bag strand section 88f is separated from the bag strand 16f, is small enough that the brake roller 100f the braking force 90f can exert on the bag strand section 88f.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Description

Stand der TechnikState of the art

Es ist bereits eine Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln aus in zumindest einem zumindest eine Beutelreihe aufweisenden, endlosen und/oder nach jeweils einer festgelegten Beutelzahl durchtrennten Beutelstrang kontinuierlich zugeführten Beuteln, mit zumindest einer, zumindest während der Bildung eines Stapels in einer zu einer Stapellagenrichtung parallelen Stapelbewegung hin- und herbewegten Stapelunterlage, mit einem Beutelzuführmittel, das den zumindest einen Beutelstrang auf der Stapelunterlage so ablegt, dass der Beutelstrang aufgrund der Stapelbewegung jeweils nach einer eine Stapellage bildenden Beutelzahl abknickt und zickzackförmige Stapellagen bildet oder dass der Beutelstrang aufgrund der Stapelbewegung in Stapellagen mit der die Stapellage bildenden Beutelzahl mit übereinstimmender Beutelorientierung aufgeschichtet wird, und mit zumindest einem Stapeltransportmittel zum Transport der Stapel nach Erreichen einer festgelegten Stapellagenzahl aus dem Einflussbereich der Stapelbewegung vorgeschlagen worden.It is already a stacking device for the continuous formation of stacks from at least one bag of endless bags having at least one row of bags and / or continuously fed after each set number of bags, with at least one, at least during the formation of a stack in a direction parallel to a stacking layer direction Stacking movement of the stacking pad back and forth, with a bag feed means which deposits the at least one bag strand on the stacking pad in such a way that the bag strand bends and forms zigzag-shaped stacking layers due to the stacking movement after each number of bags forming a stacking layer, or that the bag strand forms in stacking layers due to the stacking movement the number of bags forming the stack layer is stacked with a matching bag orientation, and with at least one stack transport means for transporting the stack after reaching a fixed number of stack layers from the Area of influence of the stack movement has been proposed.

Aus der WO 2011/010864 A2 ist bereits eine gattungsgemäße Vorrichtung zum Falten und Stapeln von Beuteln bekannt. Gefaltete Beutel werden in einem Stapelförderer geladen und nach Verpressen entladen.From the WO 2011/010864 A2 a generic device for folding and stacking bags is already known. Folded bags are loaded in a stacking conveyor and unloaded after pressing.

Aus der EP 03 660 382 A2 ist eine Einrichtung zum Zickzackförmigen Falten und Stapeln einer Materialbahn bekannt.From the EP 03 660 382 A2 a device for zigzag folding and stacking a material web is known.

Aus der US 4,181,052 A ist eine gattungsgemäße Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln aus in einem Beutelstrang kontinuierlich zugeführten Beuteln bekannt.From the US 4,181,052 A is known a generic stacking device for the continuous formation of stacks from bags continuously fed in a bag strand.

Aus der US 4,435 944 A ist eine gattungsgemäße Stapelvorrichtung zur Bildung eines Stapels aus in einem Beutelstrang kontinuierlich zugeführten Beuteln bekannt.From the US 4,435,944 A is known a generic stacking device for forming a stack of bags continuously fed in a bag string.

Offenbarung der ErfindungDisclosure of the invention

Die Erfindung geht aus von einer Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln aus in zumindest einem zumindest eine Beutelreihe aufweisenden, endlosen und/oder nach jeweils einer festgelegten Beutelzahl durchtrennten Beutelstrang kontinuierlich zugeführten Beuteln, mit zumindest einer, zumindest während der Bildung eines Stapels in einer zu einer Stapellagenrichtung parallelen Stapelbewegung hin- und herbewegten Stapelunterlage, mit einem Beutelzuführmittel, das den zumindest einen Beutelstrang auf der Stapelunterlage so ablegt, dass der Beutelstrang zumindest im Wesentlichen aufgrund der Stapelbewegung jeweils nach einer eine Stapellage bildenden Beutelzahl abknickt und zickzackförmige Stapellagen bildet oder dass der Beutelstrang zumindest im Wesentlichen aufgrund der Stapelbewegung in Stapellagen mit der die Stapellage bildenden Beutelzahl mit übereinstimmender Beutelorientierung aufgeschichtet wird, und mit zumindest einem Stapeltransportmittel zum Transport der Stapel nach Erreichen einer festgelegten Stapellagenzahl aus dem Einflussbereich der Stapelbewegung.The invention is based on a stacking device for the continuous formation of stacks from at least one endless and / or continuously fed pouches having at least one row of pouches, with at least one pouch, at least during the formation of a stack in one to one Stacking layer direction, parallel stacking movement of the stacking back and forth, with a bag feed means that deposits the at least one bag strand on the stacking base in such a way that the bag strand kinks at least essentially due to the stacking movement after a number of bags forming a stacking layer and forms zigzag-shaped stacking layers or that the bag strand at least in the Essentially due to the stacking movement in stacking layers, the number of bags forming the stacking layer is matched with the same bag orientation, and with at least one stack transport means for transporting the stack after reaching a fixed number of stacking layers from the area of influence of the stacking movement.

Es wird vorgeschlagen, dass eine erste Antriebseinheit zumindest zum Antrieb der Stapelbewegung vorgesehen ist und eine weitere Antriebseinheit zum Antrieb zumindest einer Transportbewegung zumindest eines Stapeltransportmittels vorgesehen ist.It is proposed that a first drive unit is provided at least for driving the stack movement and a further drive unit is provided for driving at least one transport movement of at least one stack transport means.

Unter einem "Beutelstrang" soll in diesem Zusammenhang insbesondere ein Strang von zusammenhängenden Beuteln verstanden werden, die bevorzugt an ihren Enden mit gemeinsamen Siegelnähten untereinander verbunden sind. Bevorzugt weisen die Siegelnähte mittig zwischen zwei Beuteln jeweils Perforationen auf, um ein Abtrennen der Beutel durch einen Benutzer zu erleichtern. Der Beutelstrang kann insbesondere auf einer Flachbeutel- und/oder Stickpackmaschine hergestellt und befüllt werden. Solche Beutelstränge und Verpackungsmaschinen sind dem Fachmann bekannt. Bevorzugt sind die Beutel flach ausgebildet, das heißt ihre Breite und ihre Länge sind zumindest doppelt so groß wie ihre Dicke senkrecht zu einer Zuführrichtung des Beutelstrangs. Beutelstränge oder auch ein Beutelstrang können unterschiedliche Beuteltypen aufweisen. Unter einer "Beutelreihe" soll in diesem Zusammenhang eine Mehrzahl von Beuteln eines Beutelstrangs verstanden werden, die im Beutelstrang in Zuführrichtung des Beutelstrangs hintereinander angeordnet sind. Unter einer "festgelegten Zahl" soll in diesem Zusammenhang insbesondere eine Zahl verstanden werden, die entsprechend einer gewünschten Stapelkonfiguration festgelegt ist. Die Zahl kann insbesondere Teil eines Parametersatzes sein, der den durch die Stapelvorrichtung zu bildenden Stapel beschreibt. Bevorzugt kann der Parametersatz auf einer Steuereinheit der Stapelvorrichtung oder einer die Stapelvorrichtung aufweisenden Verpackungsmaschine gespeichert sein. Es kann ebenfalls möglich sein, dass die festgelegte Zahl von einem Benutzer oder einem vorgelagerten Prozess festgelegt und/oder variiert wird. Es kann möglich sein, dass die festgelegte Zahl für jeden Stapel und/oder jede Stapellage neu festgelegt wird. Unter einer "festgelegten Beutelzahl" soll in diesem Zusammenhang insbesondere verstanden werden, dass eine Beutelzahl, nach der der Beutelstrang durchtrennt wird, entsprechend der gewünschten Stapelkonfiguration festgelegt ist. Die festgelegte Beutelzahl, nach der der zumindest eine Beutelstrang durchtrennt wird, kann insbesondere abhängig von der Stapellage und/oder mit jedem Stapel variieren. Insbesondere können bei einem Stapel, der mehrere Beutelstränge aufweist, die Beutelstränge nach jeweils unterschiedlichen Beutelzahlen durchtrennt werden. Es kann ebenfalls möglich sein, dass eine Stapellage in Stapellagenrichtung mehrere Beutelstränge aufweist. Eine Stapellage kann mit einem Beutelstrang begonnen und mit zumindest einem weiteren Beutelstrang beendet werden. Es können vorteilhaft verschiedene Beuteltypen in einer Stapellage abgelegt werden. Ebenfalls kann es möglich sein, dass die festgelegte Stapellagenzahl aufeinanderfolgender Stapel variiert und/oder die Stapellagenzahl der Stapel vor und/oder während der Stapelbildung jeweils neu festgelegt wird. Unter "kontinuierlich zugeführt" soll in diesem Zusammenhang insbesondere verstanden werden, dass eine Zuführbewegung, in der der Beutelstrang transportiert wird, unterbrechungsfrei, insbesondere stillstandsfrei, ist. Eine Zuführgeschwindigkeit kann, insbesondere verursacht durch einen vorgeschalteten Verpackungsprozess, bevorzugt stetig variieren. Unter einer "Stapellagenrichtung" soll in diesem Zusammenhang insbesondere eine Richtung verstanden werden, die im Mittel parallel zu der Beutelreihe oder den Beutelreihen des zumindest einen Beutelstrangs einer Stapellage ist. Unter einem "Beutelzuführmittel" soll in diesem Zusammenhang insbesondere eine Vorrichtung verstanden werden, die den Beutelstrang mit der Zuführgeschwindigkeit in Richtung der Stapelunterlage zuführt. Das Beutelzuführmittel kann zum Beispiel eine Bandkante, Rollenpaare und/oder weitere Mittel aufweisen, die dazu geeignet sind, einen Beutelstrang zuzuführen. Das Beutelzuführmittel kann eine Ablenkvorrichtung aufweisen, insbesondere zumindest ein Schwenkblech, das dazu vorgesehen ist, den Beutelstrang in einer Richtung quer zur Stapellagenrichtung und quer zur Zuführrichtung und/oder einer Gewichtskraft abzulenken. Es kann möglich sein, quer zur Stapellagenrichtung und quer zur Zuführrichtung und/oder Gewichtskraft nebeneinander mehrere Stapel zu bilden. Die Ablenkvorrichtung kann den Beutelstrang so ablenken, dass er jeweils auf dem aktuell gebildeten Stapel abgelegt wird. Der Beutelstrang kann aufgrund der Stapelbewegung jeweils nach einer eine Stapellage bildenden Beutelzahl abknicken und zickzackförmige Stapellagen bilden oder aufgrund der Stapelbewegung in Stapellagen mit der die Stapellage bildenden Beutelzahl mit übereinstimmender Beutelorientierung aufgeschichtet werden. Bevorzugt kann eine Ablenkvorrichtung, insbesondere zumindest ein Schwenkblech, so angeordnet sein, dass das Abknicken und/oder Aufschichten des Beutelstrangs bei der Stapellagenbildung unterstützt wird. Insbesondere kann die Ablenkvorrichtung dazu vorgesehen sein, den Beutelstrang in und entgegen der Stapellagenrichtung abzulenken. Die Ablenkvorrichtung kann gemeinsam mit der Stapelbewegung der Stapelunterlage das Abknicken und/oder Aufschichten des Stapels in Stapellagen bewirken. Bevorzugt kann das Abknicken und/oder Aufschichten zumindest im Wesentlichen durch die Stapelbewegung erfolgen. Unter "zumindest im Wesentlichen" soll in diesem Zusammenhang insbesondere verstanden werden, dass eine Relativbewegung des Beutelstrangs bezüglich der Stapelunterlage überwiegend aus der Stapelbewegung resultiert. Bevorzugt kann das Beutelzuführmittel Trennmittel aufweisen, wie zum Beispiel Quetschmesser, um den Beutelstrang nach der festgelegten Beutelzahl zu trennen. Alternativ kann der Beutelstrang in einem vorgelagerten Prozess durchtrennt werden, insbesondere in einem Siegelprozess zur Bildung von Siegelnähten der Beutel. Die einzelnen Stapellagen eines Stapels können dieselbe Beutelzahl aufweisen. Es ist aber auch möglich, Stapel mit Stapellagen zu bilden, die eine abweichende Beutelzahl aufweisen. Insbesondere kann sich die Beutelzahl mit jeder Stapellage verringern oder die Stapellagen können abwechselnd eine größere und eine kleinere Beutelzahl aufweisen. Insbesondere können die Stapellagen mit unterschiedlicher Beutelzahl einen Versatz aufweisen, insbesondere um eine halbe Beutellänge. Die Stapellagen können so aufgeschichtet sein, dass Beutelmitten der Beutel einer Lage zwischen Beutelmitten im Bereich der Siegelnähte der Beutel einer weiteren Lage zu liegen kommen. Die Beutel können besonders kompakt gestapelt werden. Es kann ebenfalls möglich sein, dass die Stapellagen um insbesondere eine halbe Beutelbreite quer zur Stapellagenrichtung und Zufuhrrichtung und/oder Gewichtskraft aufgeschichtet werden. Insbesondere lange, schmale Beutel wie "Stick-Packs" können mit einem Versatz quer zur Stapellagenrichtung und Zufuhrrichtung und/oder Gewichtskraft besonders kompakt gestapelt werden. Unter "zickzackförmigen" Stapellagen sollen in diesem Zusammenhang insbesondere Stapellagen eines Stapels verstanden werden, der aus einem zusammenhängenden zickzackförmigen Beutelstrang gefaltet ist. Unter einem Stapel mit Stapellagen mit "übereinstimmender Beutelorientierung" soll in diesem Zusammenhang insbesondere ein Stapel mit Stapellagen verstanden werden, bei dem der Beutelstrang nach jeder Stapellage durchtrennt wird und die Stapellagen so aufgeschichtet werden, dass die Beutel jeweils in einheitlicher Orientierung aufgestapelt sind. Insbesondere können bedruckte Vorderseiten der Beutel in Richtung einer der Gewichtskraft abgewandten Stapeloberseite orientiert sein. Unter einer "Vorderseite" eines Beutels soll in diesem Zusammenhang insbesondere eine Seite des Beutels verstanden werden, die zu einer Produktpräsentation vorgesehen ist und insbesondere einen Produktnamen, eine Produktmarke oder ähnliche Kennzeichen aufweist und die einem Kunden beim Öffnen einer die Beutel enthaltenden Packung zuerst präsentiert werden soll. Unter einem Transport "aus dem Einflussbereich der Stapelbewegung" soll in diesem Zusammenhang insbesondere verstanden werden, dass die Stapelbewegung zur Bildung des nächsten Stapels nicht mehr auf den Stapel übertragen wird. Dies kann erfolgen, indem der Stapel keinen Kontakt mit der Stapelunterlage hat oder dadurch, dass die eine weitere Stapelunterlage zur Bildung des nächsten Stapels genutzt wird und die den Stapel tragende Stapelunterlage, während sie in Kontakt mit dem Stapel steht, frei von der Stapelbewegung des nächsten Stapels bleibt. Mit dem Einsatz einer ersten Antriebseinheit und einer zweiten Antriebseinheit kann eine kontinuierliche Stapelbildung möglich sein. Eine Antriebseinheit kann die Stapelbewegung antreiben, während eine zweite Antriebseinheit die Transportbewegung antreibt, um einen Stapel aus dem Einflussbereich der Stapelbewegung zu transportieren. Alternativ kann eine Antriebseinheit die Stapelbewegung zur Stapelung eines Stapels und in Folge die Transportbewegung zum Transport des Stapels einer ersten Stapeleinheit und einer ersten Transporteinheit antreiben, während die weitere Antriebseinheit die Stapelbewegung zur Bildung des nächsten Stapels und in der Folge die Transportbewegung zum Transport des weiteren Stapels einer weiteren Stapeleinheit und einer weiteren Transporteinheit antreibt. Der Beutelstrang kann kontinuierlich zugeführt werden. Ein Stoppen des Beutelstrangs und/oder eines vorgelagerten Prozesses zur Herstellung des Beutelstrangs zwischen der Bildung zweier Stapel kann vermieden werden.In this context, a “bag strand” is to be understood in particular to mean a strand of coherent bags, which are preferably connected to one another at their ends with common sealing seams. The sealing seams preferably have perforations in the middle between two bags in order to make it easier for a user to separate the bags. The strand of bags can in particular be produced and filled on a flat bag and / or stick pack machine. Such strands of bags and packaging machines are known to the person skilled in the art. The bags are preferably of flat design, that is to say their width and length are at least twice as large as their thickness perpendicular to a feed direction of the bag strand. Strands of bags or a strand of bags can have different types of bags. In this context, a “bag row” is to be understood to mean a plurality of bags of a bag strand which are arranged one behind the other in the bag strand in the feed direction of the bag strand. In this context, a “fixed number” is to be understood in particular as a number which is fixed in accordance with a desired stack configuration. The number can in particular be part of a parameter set that describes the stack to be formed by the stacking device. The parameter set can preferably be stored on a control unit of the stacking device or on a packaging machine having the stacking device. It may also be possible that the specified number is determined and / or varied by a user or an upstream process. It may be possible that the specified number is redefined for each stack and / or each stack position. In this context, a “fixed number of bags” is to be understood in particular to mean that a number of bags, after which the strand of bags is cut, is fixed in accordance with the desired stack configuration. The Specified number of bags, after which the at least one strand of bags is severed, can in particular vary depending on the stack position and / or with each stack. In particular, in the case of a stack which has a plurality of bag strands, the bag strands can be severed according to different bag numbers. It may also be possible for a stack layer to have a plurality of bag strands in the stack layer direction. A stack position can be started with one strand of bags and ended with at least one further strand of bags. Different types of bags can advantageously be placed in a stack. It may also be possible that the specified number of stack layers of successive stacks varies and / or the number of stack layers of the stacks is determined anew before and / or during stack formation. In this context, “continuously fed” is to be understood in particular to mean that a feed movement in which the bag strand is transported is uninterrupted, in particular free from standstill. A feed speed, particularly caused by an upstream packaging process, can preferably vary continuously. In this context, a “stack layer direction” is to be understood in particular to mean a direction which is on average parallel to the row of bags or the rows of bags of the at least one strand of bags in a stack layer. In this context, a “bag feeding means” is to be understood in particular to mean a device which feeds the bag strand at the feeding speed in the direction of the stacking base. The bag feed means can have, for example, a band edge, pairs of rollers and / or other means which are suitable for feeding a strand of bags. The bag feed means can have a deflection device, in particular at least one swivel plate, which is provided to deflect the bag strand in a direction transverse to the stack layer direction and transverse to the feed direction and / or a weight. It may be possible to form several stacks next to one another transversely to the stack layer direction and transversely to the feed direction and / or weight. The deflection device can deflect the bag strand in such a way that it is placed on the stack currently being formed. Due to the stacking movement, the strand of bags can in each case bend after a number of bags forming a stacking layer and form zigzag-shaped stacking layers, or can be stacked in stacking layers with the number of bags forming the stacking layer with a matching bag orientation due to the stacking movement. A deflection device, in particular at least one swivel plate, can preferably be arranged in such a way that the kinking and / or stacking of the bag strand is supported in the formation of the stack layers. In particular, the deflection device to be provided to deflect the strand of bags in and against the direction of the stacking layers. The deflection device, together with the stacking movement of the stacking base, can cause the stack to kink and / or stack up in stacked layers. The kinking and / or stacking can preferably take place at least essentially by the stacking movement. In this context, “at least essentially” is to be understood in particular to mean that a relative movement of the bag strand with respect to the stacking base mainly results from the stacking movement. The bag feed means can preferably have separating means, such as for example squeezing knives, in order to separate the bag strand according to the specified number of bags. Alternatively, the strand of bags can be severed in an upstream process, in particular in a sealing process for forming sealed seams of the bags. The individual stack layers of a stack can have the same number of bags. However, it is also possible to form stacks with stack layers that have a different number of bags. In particular, the number of bags can decrease with each stack layer or the stack layers can alternately have a larger and a smaller number of bags. In particular, the stack layers with a different number of bags can have an offset, in particular by half a bag length. The stacking layers can be stacked in such a way that the center of the pouches of the pouches of one layer lies between the center of the pouches in the area of the sealing seams of the pouches of another layer. The bags can be stacked particularly compactly. It may also be possible for the stacking layers to be stacked, in particular by half a bag width, transversely to the stacking layer direction and feed direction and / or weight. In particular, long, narrow bags such as "stick packs" can be stacked in a particularly compact manner with an offset transverse to the stacking layer direction and feeding direction and / or weight. In this context, “zigzag” stacking layers are to be understood in particular as stacking layers of a stack that is folded from a coherent zigzag-shaped strand of bags. In this context, a stack with stack layers with "matching bag orientation" is to be understood in particular as a stack with stack layers in which the strand of bags is cut after each stack layer and the stack layers are stacked up in such a way that the bags are each stacked in a uniform orientation. In particular, printed front sides of the bags can be oriented in the direction of a top side of the stack facing away from the weight. In this context, a “front side” of a bag should in particular be understood to mean a side of the bag that leads to a product presentation is provided and in particular has a product name, a product brand or similar characteristics and which is to be presented to a customer first when opening a package containing the bags. In this context, transport “from the area of influence of the stack movement” is to be understood in particular to mean that the stack movement for forming the next stack is no longer transferred to the stack. This can be done in that the stack is not in contact with the stacking pad or in that the other stacking pad is used to form the next stack and the stacking pad carrying the stack while it is in contact with the stack is free from the stacking movement of the next one Stack remains. With the use of a first drive unit and a second drive unit, continuous stack formation may be possible. One drive unit can drive the stack movement, while a second drive unit drives the transport movement in order to transport a stack out of the area of influence of the stack movement. Alternatively, a drive unit can drive the stacking movement for stacking a stack and subsequently the transport movement for transporting the stack of a first stacking unit and a first transport unit, while the further drive unit drives the stacking movement for forming the next stack and subsequently the transport movement for transporting the further stack drives another stacking unit and a further transport unit. The string of bags can be fed continuously. Stopping the string of bags and / or an upstream process for producing the string of bags between the formation of two stacks can be avoided.

Weiter wird eine Steuereinheit vorgeschlagen, die dazu vorgesehen ist, einen Hub und/oder eine Geschwindigkeit der Stapelbewegung in zumindest einem Betriebsmodus abhängig von einer Beutelzahl und/oder einer Länge einer Stapellage in Stapellagenrichtung, einer Zuführgeschwindigkeit des Beutelstrangs und/oder einer erreichten Stapelhöhe des Stapels zu steuern. Die Stapelbewegung kann vorteilhaft an die erreichte Stapelhöhe angepasst werden. Insbesondere kann mit zunehmender Stapelhöhe eine Distanz zwischen Beutelzuführmittel und dem Beutelzuführmittel zugewandter Stapeloberseite geringer werden. Ein vorteilhafter Hub der Stapelbewegung zur Bildung der nächsten Stapellage kann mit kleiner werdender Distanz größer sein. Die Steuereinheit kann die Stapelbewegung vorteilhaft einstellen. Es ist möglich, dass die Stapellagen unterschiedliche Beutelstranglängen und/oder Beutelzahlen aufweisen. Die Beutelzahl, nach der der Beutelstrang zur Bildung einer Stapellage abknickt, kann durch den Hub und/oder die Geschwindigkeit der Stapelbewegung beeinflusst werden. Die Stapelvorrichtung kann besonders effizient und/oder flexibel sein. Es können Stapel mit Stapellagen mit abweichender Beutelzahl gebildet werden. Einflüsse der Stapelhöhe und/oder der Distanz der Stapeloberseite zum Beutelzuführmittel können ausgeglichen werden.Furthermore, a control unit is proposed, which is provided to determine a stroke and / or a speed of the stacking movement in at least one operating mode depending on a number of bags and / or a length of a stacking layer in the stacking layer direction, a feed speed of the bag strand and / or an achieved stacking height of the stack to control. The stack movement can advantageously be adapted to the stack height reached. In particular, as the stack height increases, a distance between the bag feed means and the top of the stack facing the bag feed means can become smaller. An advantageous stroke of the stacking movement to form the next stacking layer can be larger as the distance becomes smaller. The control unit can advantageously set the stacking movement. It is possible for the stack layers to have different bag strand lengths and / or bag numbers. The number of bags, after which the strand of bags kinks to form a stacking layer can be influenced by the stroke and / or the speed of the stacking movement. The stacking device can be particularly efficient and / or flexible. Stacks with stack layers with a different number of bags can be formed. Influences of the stack height and / or the distance from the top of the stack to the bag feed means can be compensated.

Es wird vorgeschlagen, dass zumindest eine der Antriebseinheiten zum Antrieb einer Stapelbewegung und einer Transportbewegung vorgesehen ist. Bevorzugt ist zumindest die erste Antriebseinheit zum Antrieb einer ersten Stapelbewegung und einer ersten Transportbewegung und die zweite Antriebseinheit ist zum Antrieb einer zweiten Stapelbewegung und einer zweiten Transportbewegung vorgesehen. Bevorzugt sind die erste und die zweite Stapelbewegung und die erste und die zweite Transportbewegung abwechselnd zur Bildung eines Stapels und eines weiteren Stapels vorgesehen. Die Transportbewegung eines Stapels kann vorteilhaft unabhängig von der Stapelbewegung des nächsten Stapels erfolgen.It is proposed that at least one of the drive units is provided for driving a stacking movement and a transport movement. At least the first drive unit is preferably used to drive a first stacking movement and a first transport movement and the second drive unit is provided to drive a second stacking movement and a second transport movement. The first and the second stacking movements and the first and the second transporting movements are preferably provided alternately to form a stack and a further stack. The transport movement of a stack can advantageously take place independently of the stack movement of the next stack.

Vorteilhaft weist die Stapelvorrichtung zumindest zwei Stapelunterlagen und zumindest zwei Stapeltransportmittel auf, wobei Stapelunterlagen und Stapeltransportmittel jeweils von einer gemeinsamen Antriebseinheit antreibbare Stapelträger bilden. Die Stapel können jeweils auf dem Stapelträger gebildet werden und in einem nächsten Schritt vom Stapelträger wegtransportiert werden, während ein nächster Stapel auf einem weiteren Stapelträger gebildet wird. Die Stapelträger werden von zumindest zwei unabhängigen Antriebseinheiten angetrieben. Die Stapelträger können von einem umlaufenden Linearmotorsystem angetrieben werden. Eine umlaufende Führung kann ein Sekundärteil oder bevorzugt ein Primärteil des Linearmotorsystems aufweisen. Die Stapelträger können Primärteile oder bevorzugt Sekundärteile des Linearmotorsystems aufweisen und unabhängig antreibbar sein. Insbesondere können die Stapelträger an zumindest zwei unabhängig angetriebenen, umlaufenden Elementen, insbesondere Riemen oder Ketten, angeordnet sein und in einem Umlauf angetrieben werden. Ein umlaufendes Element kann bevorzugt zumindest ein, besonders bevorzugt zumindest zwei Stapelträger antreiben. Ein umlaufendes Element kann einen Stapel mittels eines Stapelträgers zu einer Stapelübergabeposition transportieren, und einen weiteren Stapelträger in einen entgegen einer Transportrichtung, in der die Stapel abtransportiert werden, an einen Stapelbildungsbereich, in dem gerade ein weiterer Stapel auf einem von einem weiteren umlaufenden Element angetriebenen Stapelträger gebildet wird, angrenzenden Bereich transportieren. Bevorzugt werden die Stapelträger in Transportrichtung von gelenkig verbundenen und/oder elastischen Segmenten gebildet. Ein Umlenken der Stapelträger an Umlenkpunkten des umlaufenden Linearmotorsystems und/oder der umlaufenden Elemente um einen Radius kann vereinfacht sein. Das weitere umlaufende Element kann währenddessen die an diesem umlaufenden Element angeordneten Stapelträger in der Stapelbewegung antreiben, wobei der Stapel auf dem Stapelträger gebildet wird, der sich im Stapelbildungsbereich befindet. Die umlaufenden Elemente können abwechselnd die Stapelbewegung ausführen und auf einem ihrer Stapelträger, der sich im Stapelbildungsbereich befindet, Stapel bilden und Stapel zur Stapelübergabeposition transportieren. Eine kontinuierliche Stapelbildung von Stapeln kann möglich sein. Es ist ebenfalls möglich, dass im Anschluss an die Transportbewegung, mit welcher der Stapel aus dem Stapelbildungsbereich transportiert wird, die Stapelträger weitere Bewegungen ausführen. Insbesondere können die Stapelträger mit einer gegenüber der Stapelbewegung erhöhten Frequenz hin- und herbewegt werden, um den Stapel und/oder Beutel des Stapels zu egalisieren und/oder eine Stapelhöhe zu reduzieren. Unter "egalisieren" soll in diesem Zusammenhang insbesondere verstanden werden, dass in den Beuteln verpacktes Füllgut durch die Hin- und Herbewegung gleichmäßig verteilt wird und/oder dass sich die Stapellagen so ausrichten, dass Lücken im Stapel reduziert werden. Eine maximale Beuteldicke der Beutel kann reduziert werden und/oder eine Stapelhöhe kann abnehmen. Die Stapelträger können die Stapel im Anschluss an die Transportbewegung auch in einer mit einem weiteren Prozessschritt synchronisierten Bewegung bewegen, insbesondere einem Druckprozess und/oder einem Leimauftrag.The stacking device advantageously has at least two stack supports and at least two stack transport means, stack supports and stack transport means each forming stack carriers which can be driven by a common drive unit. The stacks can each be formed on the stack carrier and transported away from the stack carrier in a next step, while a next stack is formed on another stack carrier. The stack carriers are driven by at least two independent drive units. The stack carriers can be driven by a rotating linear motor system. A circumferential guide can have a secondary part or preferably a primary part of the linear motor system. The stack carriers can have primary parts or preferably secondary parts of the linear motor system and can be driven independently. In particular, the stack carriers can be arranged on at least two independently driven, rotating elements, in particular belts or chains, and driven in one rotation. A rotating element can preferably drive at least one, particularly preferably at least two stack carriers. A rotating element can transport a stack to a stack transfer position by means of a stack carrier, and a further stack carrier in a direction opposite to the transport direction in which the stacks are transported away, to a stack formation area in which another stack is currently being driven on by a further rotating element Stack carrier is formed, transport the adjacent area. The stack carriers are preferably formed in the transport direction by articulated and / or elastic segments. A deflection of the stack carriers at deflection points of the rotating linear motor system and / or the rotating elements by a radius can be simplified. The further rotating element can meanwhile drive the stack carriers arranged on this rotating element in the stack movement, the stack being formed on the stack carrier, which is located in the stack formation area. The rotating elements can alternately carry out the stack movement and form stacks on one of their stack carriers, which is located in the stack formation area, and transport stacks to the stack transfer position. Continuous stacking of stacks may be possible. It is also possible that, following the transport movement with which the stack is transported out of the stack formation area, the stack carriers carry out further movements. In particular, the stack carriers can be moved back and forth with a frequency that is higher than the stack movement in order to equalize the stack and / or bag of the stack and / or to reduce a stack height. In this context, “equalizing” is to be understood in particular to mean that the contents packed in the bags are distributed evenly by the back and forth movement and / or that the stack layers are aligned in such a way that gaps in the stack are reduced. A maximum bag thickness of the bags can be reduced and / or a stack height can decrease. Following the transport movement, the stack carriers can also move the stack in a movement synchronized with a further process step, in particular a printing process and / or a glue application.

In einer weiteren Ausgestaltung der Erfindung wird vorgeschlagen, dass die Stapelträger und/oder Anschlagmittel der Stapelträger für einen Rücktransport der Stapelträger entgegen der Transportrichtung, in der die Stapel abtransportiert werden, an Lagervorrichtungen aus einem Transportbereich wegschiebbar und/oder wegklappbar gelagert sind. Unter einem "Transportbereich" soll in diesem Zusammenhang insbesondere ein Bereich verstanden werden, der durch weitere Stapelträger und/oder Stapel während der Stapelbildung und/oder während des Transports von Stapeln in die Stapelübergabeposition genutzt wird. Es kann möglich sein, dass Stapelträger beim Rücktransport sich in Gegenrichtung zu weiteren Stapelträgern bewegen und diesen kollisionsfrei begegnen. Es kann möglich sein, dass die Stapelträger für den Rücktransport aus dem Transportbereich weggeschoben und/oder weggeklappt werden. Es kann auch möglich sein, dass die Stapelunterlagen der Stapelträger in verschiedenen Ebenen angeordnet sind und/oder für den Rücktransport in eine andere Ebene überführt werden und dass Anschlagmittel der Stapelträger so weggeklappt oder weggeschoben werden, dass der Stapelträger, der für den Rücktransport vorgesehen ist, sich vollständig außerhalb des Transportbereichs befindet. Die Stapelträger können vorteilhaft für den Transport von Stapeln in Transportrichtung und für den Rücktransport entgegen der Transportrichtung bewegt werden. Ein Umlauf der Stapelträger kann entfallen. Bevorzugt können die Stapelträger von einem ebenen Linearmotorsystem angetrieben werden. Die Stapelträger können Primärteile oder bevorzugt Sekundärteile des Linearmotorsystems aufweisen. Eine Führungseinheit kann die Stapelträger lagern und ein Sekundärteil oder bevorzugt ein Primärteil des Linearmotorsystems aufweisen. Die Stapelträger können durch das Linearmotorsystem unabhängig angetrieben werden. In einer weiteren Ausgestaltung der Erfindung können die Stapelträger von zwei Anschlagmitteln gebildet werden, die dazu vorgesehen sind, die Stapel jeweils an ihren in Transportrichtung entgegengesetzten Enden zu begrenzen. Die Anschlagmittel können jeweils unabhängig antreibbar sein. Bevorzugt können die Anschlagmittel jeweils Primärteile oder bevorzugt Sekundärteile des Linearmotorsystems aufweisen. Ein Abstand zwischen Anschlagmitteln, die zur Bildung eines Stapels vorgesehen sind, kann verändert werden. Bevorzugt können die Anschlagmittel, die zur Bildung eines Stapels vorgesehen sind, Stapelstützmittel aufweisen, insbesondere ineinandergreifende kammähnliche Stützfortsätze. Die Stapelstützmittel können Stapelunterlagen bilden. Eine Stapellänge kann durch Veränderung eines Abstands von Anschlagmitteln, die zur Bildung eines Stapels vorgesehen sind, verändert werden. Die Stapelvorrichtung kann unterschiedlichen Längen von Stapellagen angepasst werden. Die Stapelstützmittel können von den Anschlagmitteln unabhängig antreibbar sein. Insbesondere können die Stapelstützmittel weitere Primärteile oder bevorzugt Sekundärteile des Linearmotorsystems aufweisen. Abstände zwischen den Anschlagmitteln und Stapelstützmitteln können unabhängig eingestellt werden. Die Stapelvorrichtung kann besonders flexibel sein. Weiter wird vorgeschlagen, dass die Anschlagmittel der Stapelträger an Lagervorrichtungen aus dem Transportbereich der Stapel wegschiebbar und/oder wegklappbar gelagert sind, um ein Abschieben der Stapel zu erleichtern, insbesondere durch einen Schieber. Ein Wegschieben und/oder Wegklappen der Anschlagmittel kann bei umlaufend angetriebenen Stapelträgern weiter den Umlauf der Stapelträger an Umlenkpunkten erleichtern.In a further embodiment of the invention, it is proposed that the stack carriers and / or stop means of the stack carriers for a return transport of the stack carriers against the transport direction in which the stacks are transported are mounted on storage devices so that they can be pushed away and / or folded away from a transport region. In this context, a “transport area” is to be understood in particular to mean an area which is used by further stack carriers and / or stacks during the stack formation and / or during the transport of stacks into the stack transfer position. It may be possible for stack carriers to move in the opposite direction to other stack carriers during return transport and to encounter them without collision. It may be possible that the stack carrier for the return transport from the transport area pushed away and / or folded away. It may also be possible for the stack supports of the stack carriers to be arranged in different levels and / or to be transferred to another level for the return transport, and for the lifting means of the stack carriers to be folded away or pushed away in such a way that the stack carrier which is intended for the return transport is is completely outside the transport area. The stack carriers can advantageously be moved for the transport of stacks in the transport direction and for the return transport against the transport direction. A circulation of the stack carrier can be omitted. The stack carriers can preferably be driven by a flat linear motor system. The stack carriers can have primary parts or preferably secondary parts of the linear motor system. A guide unit can support the stack carriers and have a secondary part or preferably a primary part of the linear motor system. The stack carriers can be driven independently by the linear motor system. In a further embodiment of the invention, the stack carriers can be formed by two stop means, which are provided to limit the stack in each case at their opposite ends in the transport direction. The sling means can each be driven independently. The stop means can preferably each have primary parts or preferably secondary parts of the linear motor system. A distance between slings, which are provided to form a stack, can be changed. The stop means which are provided to form a stack can preferably have stack support means, in particular interdigitated comb-like support extensions. The stack support means can form stack supports. A stack length can be changed by changing a spacing of stop means which are provided to form a stack. The stacking device can be adapted to different lengths of stack layers. The stack support means can be driven independently of the stop means. In particular, the stack support means can have further primary parts or preferably secondary parts of the linear motor system. Distances between the slings and stacking supports can be set independently. The stacking device can be particularly flexible. It is further proposed that the stop means of the stack carriers are mounted on storage devices so that they can be pushed away and / or folded away from the transport area of the stack in order to make it easier to push the stack off, in particular by means of a slide. Pushing and / or folding away the lifting means can further facilitate the circulation of the stack carriers at deflection points in the case of rotatingly driven stack carriers.

In einer alternativen Ausgestaltung der Erfindung wird vorgeschlagen, dass eine der Antriebseinheiten nur die Stapelbewegung oder nur die Transportbewegung antreibt. Bevorzugt ist eine der Antriebseinheiten nur zum Antrieb der Stapelbewegung und eine der Antriebseinheiten nur zum Antrieb der Transportbewegung vorgesehen. Insbesondere kann eine Stapelunterlage durch die eine und ein Stapeltransportmittel kann durch die weitere Antriebseinheit angetrieben sein. Die Stapelunterlage kann Stapelbewegungen ausführen, während das Stapeltransportmittel fertige Stapel aus dem Einflussbereich der Stapelbewegung zu der Stapelübergabeposition transportiert. Eine kontinuierliche Stapelbildung kann vorteilhaft möglich sein.In an alternative embodiment of the invention it is proposed that one of the drive units drives only the stacking movement or only the transport movement. One of the drive units is preferably only intended to drive the stacking movement and one of the drive units is only intended to drive the transport movement. In particular, a stack support can be driven by the one and a stack transport means can be driven by the further drive unit. The stacking pad can execute stacking movements while the stack transport means transports finished stacks from the area of influence of the stacking movement to the stack transfer position. Continuous stacking can advantageously be possible.

Es wird vorgeschlagen, dass die Stapelunterlage von einem ersten Bandelement und das Stapeltransportmittel von einem weiteren, an das erste Bandelement angrenzenden zweiten Bandelement gebildet werden. Insbesondere können die Bandelemente mit einander gegenüberliegenden Bandnasen ihrer Bandenden aneinander angrenzen. Ein Band kann die Stapelbewegung ausführen, während das zweite Band die Transportbewegung ausführt. Ist ein Stapel gebildet, kann das erste Band die Stapelbewegung unterbrechen, kurzzeitig eine weitere Transportbewegung in Transportrichtung ausführen und so den Stapel zumindest teilweise an das weitere Band übergeben. Das weitere Band transportiert den Stapel aus dem Einflussbereich der Stapelbewegung des ersten Bandes, während das erste Band wieder mit der Stapelbewegung angetrieben wird, um den nächsten Stapel zu bilden. Die Stapelunterlage wird von wechselnden Bereichen des ersten Bandes gebildet, die jeweils im Stapelbildungsbereich liegen. Bevorzugt ist eine Zeitspanne, in der das erste Band die Stapelbewegung unterbricht und die weitere Transportbewegung ausführt, kürzer als die Zeitspanne, die ein Vorschub des Beutelstrangs vom Beutelzuführmittel mit der Zuführbewegung bis zur Stapelunterlage benötigt. Alternativ kann das Beutelzuführmittel eine Speicherfunktion aufweisen, die es ermöglicht, den kontinuierlich zugeführten Beutelstrang kurzzeitig zu stoppen. Besonders vorteilhaft kann die weitere Transportbewegung bereits einen Beginn der Stapelbewegung des nächsten Stapels bilden, indem der Beutelstrang in Richtung der weiteren Transportbewegung auf dem Band abgelegt wird und eine erste Stapellage bildet. Ein Stoppen der Zuführbewegung kann vermieden werden. Die Stapelbildung kann kontinuierlich erfolgen.It is proposed that the stack support be formed by a first belt element and the stack transport means by a further second belt element adjacent to the first belt element. In particular, the band elements can adjoin one another with band ends of their band ends lying opposite one another. One belt can carry out the stacking movement, while the second belt carries out the transport movement. If a stack is formed, the first belt can interrupt the stack movement, briefly carry out a further transport movement in the transport direction and thus at least partially transfer the stack to the further belt. The further belt transports the stack out of the area of influence of the stack movement of the first belt, while the first belt is driven again with the stack movement to form the next stack. The stacking pad is formed by changing areas of the first band, each of which lies in the stacking area. A period of time in which the first belt interrupts the stacking movement and carries out the further transport movement is preferably shorter than the period of time which an advance of the bag strand requires from the bag feed means with the feed movement to the stacking pad. Alternatively, the bag feed means can have a storage function that makes it possible to briefly stop the continuously fed bag strand. Particularly advantageously, the further transport movement can already start the stack movement of the next stack, in that the bag strand is placed on the belt in the direction of the further transport movement and forms a first stack layer. Stopping the feed movement can be avoided. The stacking can take place continuously.

Weiter wird vorgeschlagen, dass das Stapeltransportmittel dazu vorgesehen ist, Stapel aus dem Stapelbildungsbereich zu einer Weitertransporteinheit zu transportieren. Insbesondere kann das Stapeltransportmittel einen Schieber und/oder Greifer aufweisen, der den Stapel im Stapelbildungsbereich auf einer der Transportrichtung abgewandten Seite erfasst und zu einer Weitertransporteinheit transportiert. Unter einer "Weitertransporteinheit" soll in diesem Zusammenhang insbesondere eine Transporteinheit verstanden werden, das den Stapel übernimmt und zu einem nächsten Prozessschritt transportiert, wie insbesondere einem Weiterverpackungsprozess. Die Stapelunterlage kann die Stapelbewegung kontinuierlich ausführen. Der Transport des Stapels aus dem Einflussbereich der Stapelbewegung kann durch das Stapeltransportmittel erfolgen. Eine kontinuierliche Stapelbildung kann möglich sein. Die Stapelunterlage kann die Stapelbewegung unterbrechungsfrei ausüben.It is further proposed that the stack transport means is intended to transport stacks from the stack formation area to a further transport unit. In particular, the stack transport means can have a slide and / or gripper which grips the stack in the stack formation area on a side facing away from the transport direction and transports it to a further transport unit. In this context, a “further transport unit” is to be understood in particular to mean a transport unit that takes over the stack and transports it to a next process step, such as in particular a further packaging process. The stacking pad can carry out the stacking movement continuously. The stack can be transported out of the area of influence of the stack movement by the stack transport means. Continuous stacking may be possible. The stacking pad can carry out the stacking movement without interruption.

Alternativ kann die Stapelunterlage das Stapeltransportmittel zum Transport von Stapeln bilden und zum Transport in Richtung einer Gewichtskraft unter den Stapeln wegklappbar und/oder in Richtung quer zur Gewichtskraft unterhalb der Stapel wegziehbar und/oder wegschwenkbar gelagert sein. Die Stapelunterlage kann als Falltür ausgebildet sein, insbesondere als zweiteilige Falltür. Die Stapelunterlage kann zur Stapelbildung die Stapelbewegung ausführen. Ist der Stapel gebildet, kann die Stapelunterlage nach unten wegklappen, so dass der Stapel durch die Gewichtskraft durch die geöffnete, als Stapelunterlage ausgebildete Falltür fällt. Bevorzugt ist unterhalb der Stapelunterlage eine Rutsche oder eine ähnliche geeignete Transportvorrichtung angeordnet, die den fallenden Stapel auffängt und zu einer Weitertransporteinheit transportiert. Bevorzugt werden die Stapelbewegung und die Transportbewegung, die die Stapelunterlage unter dem Stapel wegzieht und/oder wegklappt, von den beiden getrennten Antriebseinheiten angetrieben.Alternatively, the stack support can form the stack transport means for transporting stacks and can be folded away under the stacks for transport in the direction of a weight and / or can be pulled away and / or pivoted away below the stack in the direction transverse to the weight. The stacking pad can be designed as a trap door, in particular as a two-part trap door. The stacking pad can execute the stacking movement to form the stack. Once the stack has been formed, the stacking pad can fold down, so that the weight falls through the opened trap door, which is designed as a stacking pad. A slide or a similar suitable transport device is preferably arranged below the stacking base, which catches the falling stack and transports it to a further transport unit. The stacking movement and the transporting movement, which pulls and / or folds away the stacking pad under the stack, are preferably driven by the two separate drive units.

In einer weiteren Ausgestaltung der Erfindung wird vorgeschlagen, dass das Beutelzuführmittel ein Bremsmittel aufweist, das dazu vorgesehen ist, in zumindest einem Betriebszustand auf zumindest einen Beutelstrangabschnitt des Beutelstrangs eine Bremskraft mit zumindest einer einer Bewegungsrichtung des Beutelstrangabschnitts entgegengesetzten Kraftkomponente auszuüben. Unter einem "Beutelstrangabschnitt" des Beutelstrangs soll in diesem Zusammenhang insbesondere ein Ende des Beutelstrangs verstanden werden, das zur Bildung eines Stapels auf die Stapelunterlage abgegeben wird. Insbesondere kann das Trennmittel den Beutelstrangabschnitt vom Beutelstrang abtrennen, sobald er die für den zu bildenden Stapel vorgesehene Beutelzahl umfasst. Unter einer "Bewegungsrichtung" des Beutelstrangs soll in diesem Zusammenhang insbesondere eine durch das Zuführen des Beutelstrangs in Zufuhrrichtung hervorgerufene Bewegungsrichtung des Beutelstrangabschnitts an einer Kontaktstelle des Bremsmittels mit dem Beutelstrang verstanden werden. Bevorzugt kann das Bremsmittel in Zuführrichtung des Beutelstrangs nach dem Trennmittel angeordnet sein. Das Bremsmittel kann eine Bewegung des Beutelstrangabschnitts in seiner Bewegungsrichtung wirksam verzögern. Insbesondere kann vermieden werden, dass der Beutelstrangabschnitt, nachdem er vom Beutelstrang abgetrennt wurde, durch die Gewichtskraft unkontrolliert und/oder mit einer zu hohen Geschwindigkeit auf die Stapelunterlage abgegeben wird und/oder auf die Stapelunterlage fällt. Bevorzugt ist das Bremsmittel um eine Achse rotierend gelagert. Insbesondere kann das Bremsmittel als eine rotierende Bürste oder besonders bevorzugt Rolle ausgebildet sein. Bevorzugt kann das Bremsmittel um seine Achse angetrieben werden. Besonders bevorzugt sind Antriebsmittel dazu vorgesehen, das Bremsmittel synchron mit der Zuführgeschwindigkeit des Beutelstrangs anzutreiben. Bevorzugt kann das Trennmittel von rotierenden Quetschmessern gebildet sein. Bevorzugt können die Quetschmesser zu einem Zeitpunkt des Trennens und/oder kann das Bremsmittel eine mit der Zuführgeschwindigkeit synchrone Umfangsgeschwindigkeit aufweisen. Die Quetschmesser und/oder das Bremsmittel können den Beutelstrang und/oder den Beutelstrangabschnitt zum Zeitpunkt des Trennens des Beutelstrangs mit der Zufuhrgeschwindigkeit antreiben. Bevorzugt kann das Bremsmittel auf den Beutelstrangabschnitt mit einer Andruckkraft gegen das Schwenkblech drücken. Die Andruckkraft kann eine vorteilhafte Haftreibung zwischen Beutelstrangabschnitt und Bremsmittel bewirken. Die Haftreibung zwischen Bremsmittel und Beutelstrangabschnitt kann vorteilhaft die Bremskraft bewirken. Das Schwenkblech kann während der Stapelbildung vorteilhaft in einer Stapelbildungsposition verweilen. Ein Abstand zwischen Bremsmittel und Schwenkblech während der Stapelbildung kann konstant sein. Eine mit einer Bewegung des Schwenkblechs hin- und herbewegbare Lagerung des Bremsmittels kann entfallen. Bevorzugt kann das Schwenkblech von der Stapelbildungsposition vorteilhaft in eine Ausschleusposition geschwenkt werden. Die Ausschleusposition kann dazu vorgesehen sein, schadhafte Beutel in einen Abfallbehälter auszuschleusen. Das Schwenkblech kann in der Ausschleusposition den Beutelstrangabschnitt vorteilhaft aus der Stapelvorrichtung ausschleusen.In a further embodiment of the invention it is proposed that the bag feed means have a braking means which is intended to exert a braking force with at least one force component opposite to at least one direction of movement of the bag strand section in at least one operating state on at least one bag strand section of the bag strand. In this context, a “bag strand section” of the bag strand is to be understood in particular to mean an end of the bag strand which is released onto the stack base in order to form a stack. In particular, it can Separating means separate the section of bag strand from the strand of bag as soon as it comprises the number of bags intended for the stack to be formed. In this context, a “direction of movement” of the bag strand is to be understood in particular to mean a direction of movement of the bag strand section at a contact point of the braking means with the bag strand caused by feeding the bag strand in the feed direction. The braking means can preferably be arranged in the feed direction of the bag strand after the separating means. The braking means can effectively delay a movement of the bag strand section in its direction of movement. In particular, it can be avoided that the bag strand section, after it has been separated from the bag strand, is released in an uncontrolled manner by the weight force and / or is dropped onto the stacking pad and / or falls onto the stacking pad at too high a speed. The braking means is preferably mounted rotating about an axis. In particular, the braking means can be designed as a rotating brush or, particularly preferably, as a roller. The braking means can preferably be driven about its axis. Drive means are particularly preferably provided to drive the braking means synchronously with the feed speed of the bag strand. The separating means can preferably be formed by rotating crushing knives. At a time of separation, the squeezing knives and / or the braking means can preferably have a peripheral speed that is synchronous with the feeding speed. The squeeze knives and / or the braking means can drive the bag string and / or the bag string section at the feed rate at the time the bag string is separated. The braking means can preferably press onto the bag strand section with a pressing force against the swivel plate. The pressing force can bring about an advantageous static friction between the bag strand section and the braking means. The static friction between the braking means and the bag strand section can advantageously bring about the braking force. The swivel plate can advantageously remain in a stack formation position during the stack formation. A distance between the brake means and the swivel plate during stack formation can be constant. A mounting of the brake means that can be moved back and forth with a movement of the swivel plate can be dispensed with. Preferably, the pivot plate can advantageously be pivoted from the stacking position into a discharge position. The discharge position can be provided to discharge defective bags into a waste container. In the eject position, the swivel plate can advantageously eject the bag strand section from the stacking device.

Weiter wird eine Verpackungsmaschine mit einer Stapelvorrichtung vorgeschlagen. Die Verpackungsmaschine kann Produktstapel mit den genannten Vorteilen kontinuierlich bilden.A packaging machine with a stacking device is also proposed. The packaging machine can continuously form product stacks with the advantages mentioned.

Weiter wird ein Verfahren zur kontinuierlichen Bildung von Stapeln vorgeschlagen. Das Verfahren beinhaltet insbesondere, dass Beutel in zumindest einem zumindest eine Beutelreihe aufweisenden, endlosen oder nach jeweils einer festgelegten Beutelzahl durchtrennten Beutelstrang kontinuierlich zugeführt werden und vom Beutelzuführmittel auf zumindest eine, zumindest während der Bildung eines Stapels in einer zu einer Stapellagenrichtung parallelen Stapelbewegung hin- und herbewegte Stapelunterlage so abgelegt werden, dass der Beutelstrang aufgrund der Stapelbewegung jeweils nach einer eine Stapellage bildenden Beutelzahl abknickt und zickzackförmige Stapellagen bildet oder dass der Beutelstrang aufgrund der Stapelbewegung in Stapellagen mit der die Stapellage bildenden Beutelzahl mit übereinstimmender Beutelorientierung aufgeschichtet wird und der Stapel mit zumindest einem Stapeltransportmittel zum Transport der Stapel nach Erreichen einer festgelegten Stapellagenzahl aus dem Einflussbereich der Stapelbewegung gebracht wird, wobei eine erste Antriebseinheit die Stapelbewegung und eine weitere Antriebseinheit eine Transportbewegung zumindest eines Stapeltransportmittels antreibt.A process for the continuous formation of stacks is also proposed. The method includes, in particular, that bags are continuously fed in at least one endless or at least one row of bags, or cut according to a specified number of bags, and are moved back and forth by the bag feed means to at least one, at least during the formation of a stack, in a stack movement parallel to a stack layer direction Moved stacking pad are placed so that the bag strand bends due to the stack movement after a number of bags forming a stack layer and forms zigzag-shaped stack layers, or that the bag strand is piled up in stack layers with the number of bags forming the stack layer with the same bag orientation and the stack with at least one Stack transport means for transporting the stack after reaching a fixed number of stack layers is brought out of the influence of the stack movement, a first drive unit driving the S tape movement and another drive unit drives a transport movement of at least one stack transport means.

Die erfindungsgemäße Stapelvorrichtung soll hierbei nicht auf die oben beschriebene Anwendung und Ausführungsform beschränkt sein. Insbesondere kann die erfindungsgemäße Stapelvorrichtung zu einer Erfüllung einer hierin beschriebenen Funktionsweise eine von einer hierin genannten Anzahl von einzelnen Elementen, Bauteilen und Einheiten abweichende Anzahl aufweisen.The stacking device according to the invention is not intended to be limited to the application and embodiment described above. In particular, the stacking device according to the invention can have a number that differs from a number of individual elements, components and units specified here in order to fulfill a function described here.

Zeichnungendrawings

Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen sind fünf Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnungen, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages result from the following description of the drawing. Five exemplary embodiments of the invention are shown in the drawings. The drawings, description, and claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.

Es zeigen:

Fig. 1
eine schematische Darstellung einer Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln in einem ersten Ausführungsbeispiel,
Fig. 2
eine schematische Darstellung einer Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln in einem zweiten Ausführungsbeispiel,
Fig. 3
eine schematische Darstellung einer Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln in einem dritten Ausführungsbeispiel,
Fig. 4
eine schematische Darstellung einer Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln in einem vierten Ausführungsbeispiel,
Fig. 5
eine schematische Darstellung einer Stapelvorrichtung zur kontinuierlichen Bildung von Stapeln in einem fünften Ausführungsbeispiel und
Fig. 6
eine schematische Darstellung eines Beutelzuführmittels einer Stapelvorrichtung in einem sechsten Ausführungsbeispiel.
Show it:
Fig. 1
1 shows a schematic illustration of a stacking device for the continuous formation of stacks in a first exemplary embodiment,
Fig. 2
1 shows a schematic illustration of a stacking device for the continuous formation of stacks in a second exemplary embodiment,
Fig. 3
1 shows a schematic illustration of a stacking device for the continuous formation of stacks in a third exemplary embodiment,
Fig. 4
1 shows a schematic illustration of a stacking device for the continuous formation of stacks in a fourth exemplary embodiment,
Fig. 5
a schematic representation of a stacking device for the continuous formation of stacks in a fifth embodiment and
Fig. 6
is a schematic representation of a bag feed means of a stacking device in a sixth embodiment.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Figur 1 zeigt eine schematische Darstellung einer Stapelvorrichtung 10a zur kontinuierlichen Bildung von Stapeln 12a aus in zumindest einem, drei Beutelreihen 14a aufweisenden, endlosen und nach jeweils einer festgelegten Beutelzahl durchtrennten Beutelstrang 16a kontinuierlich zugeführten Beuteln 18a, mit zumindest vier während der Bildung eines Stapels 12a in einer zu einer Stapellagenrichtung 20a parallelen Stapelbewegung 22a hin- und herbewegten Stapelunterlagen 24a, 24'a, mit einem Beutelzuführmittel 26a, das den Beutelstrang 16a auf die sich jeweils in einem Stapelbildungsbereich 62a befindende Stapelunterlage 24a so ablegt, dass der Beutelstrang 16a aufgrund der Stapelbewegung 22a jeweils nach einer eine Stapellage 28a bildenden Beutelzahl abknickt und zickzackförmige Stapellagen 28a bildet, und mit vier Stapeltransportmitteln 30a, 30'a zum Transport der Stapel 12a nach Erreichen einer festgelegten Stapellagenzahl aus dem Einflussbereich der Stapelbewegung 22a. Eine erste Antriebseinheit 32a ist zum Antrieb der Stapelbewegungen 22a von jeweils zwei Stapelunterlagen 24a vorgesehen. Weiter ist die erste Antriebseinheit 32a zum Antrieb von Transportbewegungen 34a zum Transport der Stapel 12a durch die zwei Stapeltransportmittel 30a vorgesehen. Eine zweite Antriebseinheit 32'a ist zum Antrieb von Transportbewegungen 34'a zum Transport der Stapel 12a durch die zwei Stapeltransportmittel 30'a vorgesehen. Weiter ist die zweite Antriebseinheit 32'a zum Antrieb von Stapelbewegungen 22'a der zwei Stapelunterlagen 24'a vorgesehen. Die Antriebseinheiten 32a, 32'a sind somit jeweils zum Antrieb einer der Stapelbewegungen 22a, 22'a und einer der Transportbewegungen 34a, 34'a vorgesehen. Die Stapelvorrichtung 10a ist Teil einer hier nur angedeuteten Verpackungsmaschine 68a. Figure 1 shows a schematic representation of a stacking device 10a for the continuous formation of stacks 12a from endless bags 18a having at least one, three bag rows 14a, continuous bag lines 16a, which are separated after a defined number of bags, with at least four bags during the formation of a stack 12a a stacking layer 24a, 24'a, which is parallel to a stacking layer direction 20a, with a bag feeding means 26a, which places the bag strand 16a on the stacking pad 24a, which is located in a stack formation area 62a, in such a way that the bag strand 16a respectively follows due to the stacking movement 22a kinks a number of bags forming a stacking layer 28a and forms zigzag-shaped stacking layers 28a, and with four stacking transport means 30a, 30'a for transporting the stack 12a after reaching a fixed number of stacking layers from the area of influence of the stacking movement 22a. A first drive unit 32a is provided for driving the stacking movements 22a of two stacking pads 24a each. Furthermore, the first drive unit 32a is provided for driving transport movements 34a for transporting the stacks 12a through the two stack transport means 30a. A second drive unit 32'a is for driving of transport movements 34'a for transporting the stacks 12a through the two stack transport means 30'a. Furthermore, the second drive unit 32'a is provided for driving stack movements 22'a of the two stacking pads 24'a. The drive units 32a, 32'a are thus each provided to drive one of the stacking movements 22a, 22'a and one of the transport movements 34a, 34'a. The stacking device 10a is part of a packaging machine 68a, which is only indicated here.

Der Beutelstrang 16a wird vom Beutelzuführmittel 26a in Richtung einer Gewichtskraft 66a nach unten in einer Zuführrichtung 70a in Richtung des Stapelbildungsbereichs 62a abgegeben. Im Beispiel sind die drei Beutelreihen 14a des Beutelstrangs 16a getrennt, so dass dieser drei Teilstränge bildet. Es ist auch möglich, dass die Beutelreihen 14a zusammenhängend ausgebildet sind. Das Beutelzuführmittel 26a weist nicht näher dargestellte Trennmittel auf, um den Beutelstrang 16a nach einer festgelegten Beutelzahl quer zur Zuführrichtung 70a abzutrennen. Die Beutelzahl kann für jede Stapellage 28a identisch oder variabel sein. Im gezeigten Fall bilden jeweils 6 Beutel 18a eine Stapellage 28a, wobei drei Beutel 18a in Beutelreihen 14a quer zur Zuführrichtung 70a nebeneinander und jeweils zwei Beutel 18a in Zuführrichtung 70a hintereinander angeordnet sind.The bag strand 16a is discharged from the bag feed means 26a in the direction of a weight force 66a downward in a feed direction 70a in the direction of the stack formation area 62a. In the example, the three rows of bags 14a of the bag strand 16a are separated, so that it forms three sub-strands. It is also possible for the rows of bags 14a to be coherent. The bag feed means 26a has separating means (not shown in more detail) in order to cut the bag strand 16a transversely to the feed direction 70a after a fixed number of bags. The number of bags can be identical or variable for each stack layer 28a. In the case shown, 6 bags 18a each form a stack layer 28a, three bags 18a being arranged next to one another in rows of bags 14a transversely to the feed direction 70a and two bags 18a one behind the other in the feed direction 70a.

Vier Stapelträger 50a, 50'a bilden die vier Stapelunterlagen 24a, 24'a und die Stapeltransportmittel 30a, 30'a, die von den zwei Antriebseinheiten 32a, 32'a angetrieben werden. Die Antriebseinheiten 32a, 32'a treiben zwei als Riemen 72a, 72'a ausgebildete umlaufende Elemente an. Die Stapelträger 50a sind am Riemen 72a angeordnet und werden durch die Antriebseinheit 32a angetrieben, die Stapelträger 50'a sind am Riemen 72'a angeordnet und werden durch die Antriebseinheit 32'a angetrieben. Die beiden Stapelträger 50a und die beiden Stapelträger 50'a sind auf den jeweiligen Riemen 72a und 72'a jeweils um einen halben Riemenumlauf versetzt angeordnet.Four stack carriers 50a, 50'a form the four stack supports 24a, 24'a and the stack transport means 30a, 30'a, which are driven by the two drive units 32a, 32'a. The drive units 32a, 32'a drive two rotating elements designed as belts 72a, 72'a. The stack carriers 50a are arranged on the belt 72a and are driven by the drive unit 32a, the stack carriers 50'a are arranged on the belt 72'a and are driven by the drive unit 32'a. The two stack carriers 50a and the two stack carriers 50'a are each offset on the respective belts 72a and 72'a by half a belt revolution.

Um die Stapelbildung zu unterstützen und die Stapel 12a auszurichten, weisen die Stapelunterlagen 24a, 24'a jeweils Anschlagmittel 36a, 36'a auf, die die Stapel 12a beidseitig einer Transportrichtung 52a in einem einer Länge 44a einer Stapellage 28a in Stapellagenrichtung 20a entsprechenden Abstand begrenzen und ausrichten.In order to support the stack formation and to align the stacks 12a, the stack supports 24a, 24'a each have stop means 36a, 36'a, which the stacks 12a have on both sides of a transport direction 52a in a length 44a of one Limit and align the stacking layer 28a in the stacking layer direction 20a.

In Figur 1 befindet sich gerade ein Stapelträger 50a im Stapelbildungsbereich 62a. Der Stapelträger 50a wird von der Antriebseinheit 32a mit der Stapelbewegung 22a angetrieben. Auf der Stapelunterlage 24a des Stapelträgers 50a wird ein Stapel 12a gebildet. Optional kann die Stapelbildung, wie in Figur 1 dargestellt, durch ein Schwenkblech 82a unterstützt werden, das in einer Schwenkbewegung 84a hin- und herbewegt wird und den Beutelstrang 16a in Stapellagenrichtung 20a ablenkt. Die Ablenkung vergrößert eine durch die Stapelbewegung 22a verursachte Relativbewegung des Beutelstrangs 16a zur Stapelunterlage 24a zusätzlich. Der weitere Stapelträger 50a befindet sich auf einer in Richtung der Gewichtskraft 66a gegenüberliegenden Seite des umlaufenden Riemens 72a. Gleichzeitig transportiert einer der Stapelträger 50'a einen auf der Stapelunterlage 24'a des Stapelträgers 50'a bereits gebildeten Stapel 12a in der Transportbewegung 34a zu einer Stapelübergabeposition 74a. Die Stapelträger 50a, 50'a mit den Stapelunterlagen 24a, 24'a und den Anschlagmitteln 36a, 36'a werden von mehreren, hier nicht näher dargestellten, gelenkig verbundenen, an den Riemen 72a, 72'a gelagerten Segmenten gebildet. Im Bereich der Stapelübergabeposition 74a wird der Stapelträger 50'a umgelenkt. Die in Transportrichtung 52a hinteren Anschlagmittel 36'a tauchen zuerst in Richtung der Gewichtskraft 66a nach unten unter den Stapel 12a ab. Ein Schieber 76a schiebt den Stapel 12a von der Stapelübergabeposition 74a in Richtung einer Weitertransporteinheit 64a und/oder zu einem nachgelagerten Prozessschritt. Das in Transportrichtung 52a vordere Anschlagmittel 36'a kann zum Abschieben des Stapels 12a durch den Schieber 76a ebenfalls unter den Stapel 12a abtauchen, um das Abschieben zu erleichtern. Im gezeigten Beispiel ist die Geometrie des in Transportrichtung 52a vorderen Anschlagmittels 36'a und des Schiebers 76a so gestaltet, dass der Schieber 76a das Anschlagmittel 36'a durchdringen kann, so dass ein Abtauchen des in Transportrichtung 52a vorderen Anschlagmittels 36'a zum Abschieben nicht erforderlich ist. In der Folge werden die verbleibenden Teile des Stapelträgers 50'a umgelenkt. Diese Prozessschritte wiederholen sich in der Folge mit dem den nächsten Stapel 12a tragenden Stapelträger 50a.In Figure 1 there is currently a stack carrier 50a in the stack formation area 62a. The stack carrier 50a is driven by the drive unit 32a with the stack movement 22a. A stack 12a is formed on the stack base 24a of the stack carrier 50a. Optionally, the stack formation, as in Figure 1 are supported by a swivel plate 82a, which is moved back and forth in a swivel movement 84a and deflects the bag strand 16a in the stacking direction 20a. The deflection additionally increases a relative movement of the bag strand 16a to the stacking base 24a caused by the stacking movement 22a. The further stack carrier 50a is located on a side of the rotating belt 72a opposite in the direction of the weight force 66a. At the same time, one of the stack carriers 50'a transports a stack 12a already formed on the stack support 24'a of the stack carrier 50'a in the transport movement 34a to a stack transfer position 74a. The stack carriers 50a, 50'a with the stack supports 24a, 24'a and the stop means 36a, 36'a are formed by a plurality of articulated segments, not shown here, which are mounted on the belts 72a, 72'a. The stack carrier 50'a is deflected in the area of the stack transfer position 74a. The rear stop means 36'a in the transport direction 52a first dive downward in the direction of the weight 66a under the stack 12a. A slide 76a pushes the stack 12a from the stack transfer position 74a towards a further transport unit 64a and / or to a downstream process step. The stop means 36'a at the front in the transport direction 52a can also be submerged under the stack 12a in order to push the stack 12a away by the slide 76a in order to facilitate pushing off. In the example shown, the geometry of the front stop means 36'a in the transport direction 52a and the slide 76a is designed such that the slide 76a can penetrate the stop means 36'a, so that the front stop means 36'a in the transport direction 52a does not submerge for pushing is required. As a result, the remaining parts of the stack carrier 50'a are deflected. These process steps are then repeated with the stack carrier 50a carrying the next stack 12a.

Der weitere Stapelträger 50'a befindet sich um eine halbe Länge des Riemens 72'a versetzt und grenzt entgegen der Transportrichtung 52a an den Stapelbildungsbereich 62a an. Ist der auf dem Stapelträger 50a gebildete Stapel 12a fertiggestellt, wird der Stapelträger 50a in der Transportbewegung 34a angetrieben und der Stapelträger 50'a in den Stapelbildungsbereich 62a bewegt, wo er mit der Stapelbewegung 22a angetrieben wird und der nächste Stapel 12a gebildet wird.The further stack carrier 50'a is offset by half a length of the belt 72'a and adjoins the stack formation area 62a against the transport direction 52a. When the stack 12a formed on the stack carrier 50a is completed, the stack carrier 50a is driven in the transport movement 34a and the stack carrier 50'a is moved into the stack formation area 62a, where it is driven with the stack movement 22a and the next stack 12a is formed.

Alternativ zur gezeigten Zickzack-Faltung der Stapel 12a kann die Stapelbewegung 22a auch so gesteuert und kann der Beutelstrang 16a auch so getrennt werden, dass der Beutelstrang 16a aufgrund der Stapelbewegung 22a in Stapellagen 28a mit der die Stapellage 28a bildenden Beutelzahl mit übereinstimmender Beutelorientierung aufgeschichtet wird.As an alternative to the zigzag folding of the stacks 12a shown, the stack movement 22a can also be controlled and the bag strand 16a can also be separated in such a way that the bag strand 16a is piled up in stack layers 28a with the number of bags forming the stack layer 28a with the same bag orientation due to the stack movement 22a.

Zur Steuerung der Stapelbewegungen 22a, 22'a und der Transportbewegungen 34a, 34'a ist eine Steuereinheit 38a vorgesehen, die die Antriebseinheiten 32a und 32'a steuert. Die Steuereinheit 38a steuert einen Hub 40a und eine Geschwindigkeit 42a der Stapelbewegung 22a abhängig von der Beutelzahl und der Länge 44a einer Stapellage 28a in Stapellagenrichtung 20a, einer Zuführgeschwindigkeit 46a des Beutelstrangs 16a sowie einer erreichten Stapelhöhe 48a des Stapels 12a. Insbesondere wird der Hub 40a der Stapelbewegung 22a umso größer, je größer die Stapelhöhe 48a ist und je kleiner der verbleibende Abstand zwischen Stapel 12a und Beutelzuführmittel 26a ist.To control the stack movements 22a, 22'a and the transport movements 34a, 34'a, a control unit 38a is provided which controls the drive units 32a and 32'a. The control unit 38a controls a stroke 40a and a speed 42a of the stacking movement 22a depending on the number of bags and the length 44a of a stack layer 28a in the stack layer direction 20a, a feed speed 46a of the bag strand 16a and an achieved stack height 48a of the stack 12a. In particular, the stroke 40a of the stack movement 22a increases, the greater the stack height 48a and the smaller the remaining distance between stack 12a and bag feed means 26a.

Die nachfolgende Beschreibung und die Zeichnungen von vier weiteren Ausführungsbeispielen beschränken sich im Wesentlichen auf die Unterschiede zwischen den Ausführungsbeispielen, wobei bezüglich gleich bezeichneter Bauteile, insbesondere in Bezug auf Bauteile mit gleichen Bezugszeichen, grundsätzlich auch auf die Zeichnungen und/oder die Beschreibung der anderen Ausführungsbeispiele verwiesen werden kann. Zur Unterscheidung der Ausführungsbeispiele sind anstelle des Buchstabens a des ersten Ausführungsbeispiels die Buchstaben b, c, d und e den Bezugszeichen der weiteren Ausführungsbeispiele nachgestellt.The following description and the drawings of four further exemplary embodiments are essentially limited to the differences between the exemplary embodiments, with reference being made to the drawings and / or the description of the other exemplary embodiments with regard to components with the same designation, in particular with respect to components with the same reference symbols can be. To distinguish the exemplary embodiments, instead of the letter a of the first exemplary embodiment, the letters b, c, d and e are followed by the reference numerals of the further exemplary embodiments.

Figur 2 zeigt eine Stapelvorrichtung 10b in einem zweiten Ausführungsbeispiel. Die Stapelvorrichtung 10b des zweiten Ausführungsbeispiels unterscheidet sich von der Stapelvorrichtung 10a insbesondere dadurch, dass zwei Stapelträger 50b, 50'b auf jeweils einem Linearmotor 80b, 80'b eines Linearmotorsystems 78b angeordnet sind. Die Linearmotoren 80b, 80'b bilden Antriebseinheiten 32b, 32'b und können unabhängig angetrieben werden. Figure 2 shows a stacking device 10b in a second embodiment. The stacking device 10b of the second exemplary embodiment differs from the stacking device 10a in particular in that two stack carriers 50b, 50'b are each arranged on a linear motor 80b, 80'b of a linear motor system 78b. The linear motors 80b, 80'b form drive units 32b, 32'b and can be driven independently.

Die Stapelträger 50b, 50'b sind in Richtung einer Gewichtskraft 66b verschiebbar gelagert und Anschlagmittel 36b, 36'b sind an Lagervorrichtungen 54b an Stapelunterlagen 24b, 24'b klappbar angeordnet, so dass die Stapelträger 50b, 50'b mit den parallel zu einer Transportrichtung 52b weggeklappten Anschlagmitteln 36b, 36b' aus einem Transportbereich 56b, in dem Stapel 12b transportiert werden, weggeschoben werden können. In Figur 2 wird auf dem Stapelträger 50b ein Stapel 12b gebildet, während der Stapelträger 50'b einen weiteren Stapel 12b in einer Stapelübergabeposition 74b unterstützt von einem Schieber 76b an eine Weitertransporteinheit 64b abgibt. Anschließend wird der Stapelträger 50'b entgegen der Transportrichtung 52b in eine Position bewegt, in der er auf der der Transportrichtung 52b entgegengesetzten Seite an einen Stapelbildungsbereich 62b angrenzt. Um bei dieser Bewegung eine Kollision mit dem Stapel 12b, der gerade auf dem Stapelträger 50b gebildet wird, und mit dem Stapelträger 50b zu vermeiden, werden die Anschlagmittel 36'b in eine zur Transportrichtung 52b parallele Lage weggeklappt und der Stapelträger 50'b aus dem Transportbereich 56b in Richtung der Gewichtskraft 66b weggeschoben. Anschließend werden die Anschlagmittel 36'b wieder aufgeklappt und der Stapelträger 50'b entgegen der Gewichtskraft 66b zurückgeschoben, und der Stapelträger 50'b wird in den Stapelbildungsbereich 62b zur Bildung des nächsten Stapels 12b bewegt, sobald der Stapelträger 50b den Stapelbildungsbereich 62b mit dem auf dem Stapelträger 50b gebildeten fertiggestellten Stapel 12b verlassen hat. Während der Stapelbildung wird der Stapelträger 50b, 50'b, der sich im Stapelbildungsbereich 62b befindet, wie im ersten Ausführungsbeispiel mit einer Stapelbewegung 22b angetrieben.The stack carriers 50b, 50'b are displaceably mounted in the direction of a weight 66b and stop means 36b, 36'b are arranged on storage devices 54b on stacking supports 24b, 24'b so that the stack carriers 50b, 50'b are parallel to one another Transport direction 52b folded away stop means 36b, 36b 'from a transport area 56b in which stacks 12b are transported can be pushed away. In Figure 2 a stack 12b is formed on the stack carrier 50b, while the stack carrier 50'b delivers a further stack 12b in a stack transfer position 74b, supported by a slide 76b, to a further transport unit 64b. The stack carrier 50'b is then moved counter to the transport direction 52b into a position in which it adjoins a stack formation area 62b on the side opposite the transport direction 52b. In order to avoid a collision with the stack 12b, which is currently being formed on the stack carrier 50b, and with the stack carrier 50b during this movement, the stop means 36'b are folded away into a position parallel to the transport direction 52b and the stack carrier 50'b out of the Transport area 56b pushed in the direction of weight 66b. The stop means 36'b are then opened again and the stack carrier 50'b is pushed back against the weight 66b, and the stack carrier 50'b is moved into the stack formation area 62b to form the next stack 12b as soon as the stack carrier 50b opens the stack formation area 62b completed stack 12b formed from the stack carrier 50b. During the stack formation, the stack carrier 50b, 50'b, which is located in the stack formation region 62b, is driven with a stack movement 22b, as in the first exemplary embodiment.

Figur 3 zeigt eine Stapelvorrichtung 10c in einem dritten Ausführungsbeispiel. Die Stapelvorrichtung 10c des dritten Ausführungsbeispiels unterscheidet sich von der Stapelvorrichtung 10a insbesondere dadurch, dass eine Stapelbewegung 22c und eine Transportbewegung 34c durch unabhängige Antriebseinheiten 32c, 32'c angetrieben werden. Eine Stapelunterlage 24c und ein Stapeltransportmittel 30c werden von zwei aneinander angrenzenden Bandelementen 58c, 60c gebildet. Das Bandelement 58c bildet dabei ein Stapelband und das Bandelement 60c bildet ein Transportband. Das Bandelement 58c wird in der Stapelbewegung 22c angetrieben. Ist eine festgelegte Anzahl von Stapellagen 28c erreicht, wird das Bandelement 58c kurzzeitig in Richtung des Bandelements 60c bewegt, bis ein gerade gebildeter Stapel 12c weit genug auf dem Bandelement 60c aufliegt, dass das Bandelement 60c den Stapel 12c übernimmt und in der Transportbewegung 34c zu einer Weitertransporteinheit 64c transportiert. Das Bandelement 58c wird wieder mit der Stapelbewegung 22c angetrieben. Der nächste Stapel 12c wird in dem Bereich des Bandelements 58c gebildet, der neu in einem ortsfesten Stapelbildungsbereich 62c zu liegen gekommen ist. Dieser Bereich des Bandelements 58c bildet jeweils die Stapelunterlage 24c, wobei der Bereich jeweils an wechselnden Abschnitten des Bandelements 58c gebildet werden kann. Eine Rückbewegung des Bandelements 58c ist daher nicht erforderlich. Die Bewegung, in der das Bandelement 58c den vorhergehenden Stapel 12c in Richtung des Bandelements 60c bewegt, bildet bereits den Beginn der Stapelbewegung 22c, mit der der nächste Stapel 12c gebildet wird. Der Unterbruch der Stapelbewegung 22c zum Bewegen der Stapel 12c zum Bandelement 60c ist daher kurz genug, dass ein Beutelzuführmittel 26c zur Stapelbildung einen Beutelstrang 16c kontinuierlich abgeben kann. Figure 3 shows a stacking device 10c in a third embodiment. The stacking device 10c of the third exemplary embodiment differs from the stacking device 10a in particular in that a stacking movement 22c and a transport movement 34c are driven by independent drive units 32c, 32'c. A stacking pad 24c and a stacking means 30c are formed by two adjoining band elements 58c, 60c. The belt element 58c forms a stacking belt and the belt element 60c forms a conveyor belt. The belt element 58c is driven in the stacking movement 22c. If a defined number of stack layers 28c has been reached, the belt element 58c is briefly moved in the direction of the belt element 60c until a stack 12c which has just been formed rests on the belt element 60c far enough that the belt element 60c takes over the stack 12c and in the transport movement 34c to one Transport unit 64c transported. The belt element 58c is driven again with the stacking movement 22c. The next stack 12c is formed in the area of the band element 58c which has now come to rest in a stationary stack formation area 62c. This region of the band element 58c forms the stack base 24c, the region being able to be formed in each case on changing sections of the band element 58c. A return movement of the band element 58c is therefore not necessary. The movement in which the band element 58c moves the previous stack 12c in the direction of the band element 60c already forms the start of the stack movement 22c with which the next stack 12c is formed. The interruption of the stack movement 22c for moving the stack 12c to the belt element 60c is therefore short enough that a bag feed means 26c for stack formation can continuously deliver a bag strand 16c.

Figur 4 zeigt eine Stapelvorrichtung 10d in einem vierten Ausführungsbeispiel. Die Stapelvorrichtung 10d des vierten Ausführungsbeispiels unterscheidet sich von der Stapelvorrichtung 10c des dritten Ausführungsbeispiels insbesondere dadurch, dass ein von einem Schieber 76d gebildetes Stapeltransportmittel 30d dazu vorgesehen ist, Stapel 12d aus einem Stapelbildungsbereich 62d zu einer Weitertransporteinheit 64d zu transportieren. Eine Stapelunterlage 24d wird von einer in einer Stapelbewegung 22d hin- und herschwingend angetriebenen Platte gebildet. Ist ein Stapel 12d mit einer festgelegten Stapellagenzahl aufgeschichtet, schiebt der getrennt angetriebene Schieber 76d den Stapel 12d in einer Transportbewegung 34d auf die als Band ausgebildete Weitertransporteinheit 64d. Gleichzeitig beginnt auf der Stapelunterlage 24d die Bildung des nächsten Stapels 12d. In einer Weiterbildung der Stapelvorrichtung 10d ist die Stapelunterlage 24d in Richtung einer Gewichtskraft 66d verschiebbar gelagert. Während der Stapelbildung wird die Stapelunterlage 24d mit jeder neu gebildeten Stapellage 28d um eine Höhe der gebildeten Stapellage 28d in Richtung der Gewichtskraft 66d verschoben. Ein Abstand zwischen einer Stapeloberseite des Stapels 12d und einem Beutelzuführmittel 26d kann konstant bleiben, so dass Bedingungen, unter denen ein Beutelstrang 16d zickzackförmig abknickt, unverändert bleiben. Figure 4 shows a stacking device 10d in a fourth embodiment. The stacking device 10d of the fourth exemplary embodiment differs from the stacking device 10c of the third exemplary embodiment in particular in that a stack transport means 30d formed by a slide 76d is provided for transporting stack 12d from a stack formation area 62d to a further transport unit 64d. A stacking base 24d is formed by a plate which is driven to oscillate in a stacking movement 22d. If a stack 12d with a fixed number of stack layers is stacked, the separately driven slide 76d pushes the stack 12d in a transport movement 34d onto the further transport unit 64d designed as a belt. At the same time, the formation of the next stack 12d begins on the stack support 24d. In a further development of the stacking device 10d, the stacking base 24d is mounted displaceably in the direction of a weight 66d. During the stack formation, the stack support 24d is shifted with each newly formed stack layer 28d by a height of the stack layer 28d formed in the direction of the weight 66d. A distance between a stack top of the stack 12d and a bag feed means 26d can remain constant so that conditions under which a bag strand 16d kinks in a zigzag fashion remain unchanged.

Figur 5 zeigt eine Stapelvorrichtung 10e in einem fünften Ausführungsbeispiel. Die Stapelvorrichtung 10e des fünften Ausführungsbeispiels unterscheidet sich von der Stapelvorrichtung 10d des vierten Ausführungsbeispiels insbesondere dadurch, dass eine Stapelunterlage 24e ein Stapeltransportmittel 30e zum Transport von Stapeln 12e bildet und zum Transport in Richtung einer Gewichtskraft 66e unter den Stapeln 12e wegklappbar gelagert ist. Zur Bildung der Stapel 12e wird die Stapelunterlage 24e in einer Stapelbewegung 22e bewegt. Ist die festgelegte Anzahl Stapellagen 28e erreicht, wird die entlang einer zur Stapelbewegung 22e parallelen Mittellinie geteilte Stapelunterlage 24e in einer Transportbewegung 34e beidseitig nach unten weggeklappt und bildet so das Stapeltransportmittel 30e zum Transport des Stapels 12e in Richtung der Gewichtskraft 66e. Der Stapel 12e fällt aufgrund der Gewichtskraft 66e auf ein Weitertransportmittel 64e und wird von diesem zu einem nächsten Prozessschritt transportiert. Optional kann der Stapel 12e in einen unterhalb der Stapelunterlage 24e angeordneten Behälter fallen und/oder das Weitertransportmittel 64e kann Behälter transportieren, in die der Stapel 12e fällt. Anschließend wird die Stapelunterlage 24e wieder zurückgeklappt, so dass ein nächster Stapel 12e gebildet werden kann. Die Transportbewegung 34e ist ausreichend schnell, dass ein Beutelzuführmittel 26e einen Beutelstrang 16e zur Stapelbildung kontinuierlich abgeben kann. Die Stapelbewegung 22e wird von einer Antriebseinheit 32e und die Transportbewegung 34e wird von einer Antriebseinheit 32'e unabhängig angetrieben. Wie im vierten Ausführungsbeispiel kann in einer Weiterbildung der Stapelvorrichtung 10e die Stapelunterlage 24e in Richtung der Gewichtskraft 66e verschiebbar gelagert sein. Figure 5 shows a stacking device 10e in a fifth embodiment. The stacking device 10e of the fifth exemplary embodiment differs from the stacking device 10d of the fourth exemplary embodiment in particular in that a stacking support 24e forms a stack transport means 30e for transporting stacks 12e and is mounted so that it can be folded away under the stacks 12e for transport in the direction of a weight 66e. To form the stacks 12e, the stack support 24e is moved in a stacking movement 22e. When the specified number of stacking layers 28e has been reached, the stacking base 24e, which is divided along a center line parallel to the stacking movement 22e, is folded down on both sides in a transport movement 34e and thus forms the stack transport means 30e for transporting the stack 12e in the direction of the weight 66e. Due to the weight force 66e, the stack 12e falls on a further transport means 64e and is transported by this to a next process step. Optionally, the stack 12e can fall into a container arranged below the stack support 24e and / or the further transport means 64e can transport containers into which the stack 12e falls. The stacking pad 24e is then folded back so that a next stack 12e can be formed. The transport movement 34e is sufficiently fast that a bag feed means 26e can continuously deliver a bag strand 16e for stack formation. The stacking movement 22e is driven independently by a drive unit 32e and the transport movement 34e is driven by a drive unit 32'e. As in the fourth exemplary embodiment, in a further development of the stacking device 10e, the stacking base 24e can be mounted displaceably in the direction of the weight 66e.

Figur 6 zeigt eine schematische Darstellung eines Beutelzuführmittels 26f einer Stapelvorrichtung 10f zum kontinuierlichen Bilden von Stapeln 12f in einem sechsten Ausführungsbeispiel. Das Beutelzuführmittel 26f unterscheidet sich von den Beutelzuführmitteln 26a-e der vorherigen Ausführungsbeispiele insbesondere dadurch, dass es ein Bremsmittel 86f aufweist, das dazu vorgesehen ist, in zumindest einem Betriebszustand auf zumindest einen Beutelstrangabschnitt 88f eines Beutelstrangs 16f eine Bremskraft 90f mit zumindest einer einer Bewegungsrichtung 92f des Beutelstrangabschnitts 88f entgegengesetzten Kraftkomponente auszuüben. Durch das Bremsmittel 86f kann wirksam vermieden werden, dass der von Trennmitteln 96f abgetrennte Beutelstrangabschnitt 88f unkontrolliert auf den Stapel 12f oder eine Stapelunterlage 24f fällt. Das Beutelzuführmittel 26f kann vorteilhaft in den Stapelvorrichtungen 10a-e anstelle der in den Ausführungsbeispielen beschriebenen Beutelzuführmittel 26a-e eingesetzt werden. Figure 6 shows a schematic representation of a bag feed means 26f of a stacking device 10f for the continuous formation of stacks 12f in a sixth embodiment. The bag feed means 26f differs from the bag feed means 26a-e of the previous exemplary embodiments in particular in that it has a braking means 86f which is provided, in at least one operating state, for braking force 90f with at least one direction of movement 92f on at least one bag strand section 88f of a bag strand 16f of the bag strand section 88f to exert an opposite force component. The braking means 86f can effectively prevent that the bag strand section 88f separated by separating means 96f falls onto the stack 12f or a stacking base 24f in an uncontrolled manner. The bag feed means 26f can advantageously be used in the stacking devices 10a-e instead of the bag feed means 26a-e described in the exemplary embodiments.

Der Beutelstrang 16f wird zwischen zwei angetriebenen Transportrollen 94f in einer Zuführrichtung 70f in einer Zuführgeschwindigkeit 46f in Richtung eines Stapelbildungsbereichs 62f transportiert. Der Beutelstrang 16f wird in der Folge zwischen zwei rotierende Trennmittel 96f geführt, welche in ihrem Umfang jeweils ein Quetschmesser 98f aufweisen. Die Trennmittel 96f trennen den Beutelstrangabschnitt 88f vom Beutelstrang 16f ab, sobald er eine für den Stapel 12f gewünschte Beutelzahl erreicht hat.The bag strand 16f is transported between two driven transport rollers 94f in a feed direction 70f at a feed speed 46f in the direction of a stack formation area 62f. The bag strand 16f is subsequently guided between two rotating separating means 96f, each of which has a squeezing knife 98f in its circumference. The separating means 96f separate the bag strand section 88f from the bag strand 16f as soon as it has reached a desired number of bags for the stack 12f.

Das Bremsmittel 86f weist eine gummierte Bremsrolle 100f auf, die über einen Riementrieb 102f mit gleicher Umfangsgeschwindigkeit wie die Transportrollen 94f angetrieben wird. Ein Schwenkblech 82f befindet sich im gezeigten Betriebszustand, in dem Stapel 12f gebildet werden, in einer Stapelbildungsposition 104f. Im Gegensatz zum Schwenkblech 82a-e der vorherigen Ausführungsbeispiele verbleibt das Schwenkblech 82f in dieser Position. Sollen z.B. schadhafte Beutel 18f aus der Stapelvorrichtung 10f entfernt werden, kann das Schwenkblech 82f in eine hier nicht dargestellte Ausschleusposition geschwenkt werden, in der der Beutelstrangabschnitt 88f in Richtung eines Abfallbehälters gelenkt wird.The brake means 86f has a rubberized brake roller 100f which is driven by a belt drive 102f at the same peripheral speed as the transport rollers 94f. In the operating state shown, in which stacks 12f are formed, a pivot plate 82f is in a stack formation position 104f. In contrast to the swivel plate 82a-e of the previous exemplary embodiments, the swivel plate 82f remains in this position. Should e.g. defective bags 18f are removed from the stacking device 10f, the pivot plate 82f can be pivoted into a discharge position, not shown here, in which the bag strand section 88f is directed in the direction of a waste container.

Die Bremsrolle 100f ist auf einer dem Schwenkblech 82f in der Stapelbildungsposition 104f gegenüberliegenden Seite des Beutelstrangabschnitts 88f in einem Abstand 106f angeordnet, der etwas kleiner ist als eine mittlere Beuteldicke der Beutel 18f. Die Bremsrolle 100f drückt somit die Beutel 18f des Beutelstrangabschnitts 88f an einer Kontaktstelle 108f der Bremsrolle 100f mit einer Andrucckraft gegen das Schwenkblech 82f. Die Gummierung der Bremsrolle 100f bewirkt, dass Schwankungen der Beuteldicke ausgeglichen werden. Zusätzlich kann die Bremsrolle 100f in Richtung des Abstands 106f gefedert gelagert sein. Aufgrund der durch die Andruckkraft zwischen Bremsrolle 100f und Beutelstrangabschnitt 88f bestehenden Haftreibung kann die Bremsrolle 100f die Bremskraft 90f auf den Beutelstrangabschnitt 88f ausüben. Wird der Beutelstrangabschnitt 88f, nachdem er durch die Trennmittel 96f vom Beutelstrang 16f abgetrennt worden ist, durch eine Gewichtskraft 66f beschleunigt, bremst die Bremsrolle 100f den Beutelstrangabschnitt 88f durch die Bremskraft 90f so ab, dass er sich in der Bewegungsrichtung 92f synchron mit den Transportrollen 94f in der Zuführgeschwindigkeit 46f bewegt. Die Bremskraft 90f kann ihre Richtung auch umkehren und den Beutelstrangabschnitt 88f beschleunigen, sollte er langsamer als die Zuführgeschwindigkeit 46f werden. In der gezeigten Konfiguration mit der Gewichtskraft 66f, die in Zuführrichtung 70f wirkt, tritt dieser Fall in der Regel nicht auf. Wird das Beutelzuführmittel 26f in anderen Konfigurationen verwendet, ist dieser Fall jedoch denkbar. Soll der Beutelstrangabschnitt 88f in von der Zuführgeschwindigkeit 46f des Beutelstrangs 16f abweichenden Geschwindigkeiten auf den Stapel 12f abgebbar sein, kann die Bremsrolle 100f in einer Variante der Erfindung mit einem vom Antrieb der Transportrollen 94f unabhängigen Antrieb angetrieben werden. Ebenso kann es möglich sein, dass bei der Stapelbildung das Schwenkblech 82f wie in den vorherigen gezeigten Ausführungsbeispielen in einer Schwenkbewegung hin- und hergeschwenkt wird. In diesem Fall verfügt das Bremsmittel 86f über Lagermittel, die es erlauben, die Bremsrolle 100f mit der Schwenkbewegung des Schwenkblechs 82f so mitzubewegen, dass der Abstand 106f, zumindest wenn der Beutelstrangabschnitt 88f vom Beutelstrang 16f abgetrennt ist, klein genug ist, dass die Bremsrolle 100f die Bremskraft 90f auf den Beutelstrangabschnitt 88f ausüben kann.The brake roller 100f is arranged on a side of the bag strand section 88f opposite the swivel plate 82f in the stacking position 104f at a distance 106f which is somewhat smaller than an average bag thickness of the bags 18f. The brake roller 100f thus presses the bags 18f of the bag strand section 88f at a contact point 108f of the brake roller 100f with a pressure force against the swivel plate 82f. The rubber coating of the brake roller 100f causes fluctuations in the bag thickness to be compensated for. In addition, the brake roller 100f can be spring-loaded in the direction of the distance 106f. Due to the static friction caused by the pressure force between the brake roller 100f and the bag strand section 88f, the brake roller 100f can exert the braking force 90f on the bag strand section 88f. If the bag strand section 88f is accelerated by a weight force 66f after it has been separated from the bag strand 16f by the separating means 96f, the brakes Brake roller 100f pulls off the bag strand section 88f by the braking force 90f in such a way that it moves in the direction of movement 92f synchronously with the transport rollers 94f at the feed speed 46f. The braking force 90f can also reverse its direction and accelerate the bag strand section 88f should it become slower than the feed speed 46f. In the configuration shown with the weight force 66f, which acts in the feed direction 70f, this case generally does not occur. However, if the bag feeder 26f is used in other configurations, this case is conceivable. In a variant of the invention, if the bag strand section 88f should be able to be delivered onto the stack 12f at speeds differing from the feed speed 46f of the bag strand 16f, the brake roller 100f can be driven with a drive which is independent of the drive of the transport rollers 94f. It may also be possible that when the stack is formed, the swivel plate 82f is swung back and forth in a swivel movement, as in the previous exemplary embodiments shown. In this case, the brake means 86f has bearing means which allow the brake roller 100f to be moved along with the pivoting movement of the pivot plate 82f in such a way that the distance 106f, at least when the bag strand section 88f is separated from the bag strand 16f, is small enough that the brake roller 100f the braking force 90f can exert on the bag strand section 88f.

Claims (12)

  1. Stacking device for a continuous formation of stacks (12a-f) from bags (18a) that are continuously fed in at least one string of bags (16a; c-f) comprising at least one row of bags (14a), which is endless and/or is severed respectively after a defined number of bags (18a),
    with at least one stack support (24a-f, 24'a; b) that is, at least during the formation of a stack (12a-f), moved back and forth in a stacking movement (22a-e, 22'a) parallel to a stacking layer direction (20a),
    with a bag feeding means (26a-d, f) that deposits the at least one string of bags (16a; d-f) on the stack support (24a-f, 24'a; b) in such a way that the string of bags (16a; d-f) is bent at least substantially due to the stacking movement (22a-e) respectively after a number of bags forming a stacking layer (28a; c-d) and forms zigzag-shaped stacking layers (28a; c-d), or that the string of bags (16a; d-f) is piled up at least substantially due to the stacking movement (22a-e, 22'a) in stacking layers (28a; c-d) comprising the number of bags that form the stacking layer (28a; c-d) and having a consistent bag orientation,
    and with at least one stack transporting means (30a; c-d) for a transport of the stacks (12a-f) out of the influence zone of the stacking movement (22a-e, 22'a) once a defined number of stacking layers has been reached,
    with a first drive unit (32a-e, 32'a, b), which is configured to drive at least one stacking movement (22a-e), and with a further drive unit (32'a-e, 32a, b), which is configured to drive at least one transport movement (34a-e, 34'a) of at least one stack transporting means (30a-e, 30'a, b).
  2. Stacking device according to claim 1, characterised by a control unit (38a) that is configured in at least one operation mode to control a stroke (40a) and/or a speed (42a) of the stacking movement (22a, 22'a) at least depending on a number of bags and/or on a length (44a) of a stacking layer (28a) in a stacking direction (20a), on a feeding speed (46a; 46f) of the string of bags (16a) and/or on a stacking height (48a; 46f) of the stack (12a; 46f).
  3. Stacking device according to claim 1 or 2, characterised in that at least one of the drive units (32a-b, 32'a, b) is configured to drive a stacking movement (22a, b, 22'a) and a transport movement (34a, b, 34'a).
  4. Stacking device according to one of the preceding claims, characterised by at least two stack supports (24a; b, 24'a; b) and at least two stack transporting means (30a; b, 30'a; b), wherein stack supports (24a; b, 24'a; b) and stack transporting means (30a; b, 30'a; b) implement stack carriers (50a; b, 50'a; b), which are respectively drivable by a shared drive unit (32a; b, 32'a; b).
  5. Stacking device according to claim 4, characterised in that, for a return transport of the stack carriers (50b, 50'b) counter to a transport direction (52b), the stack carriers (50b, 50'b) and/or abutment means (36b, 36'b) of the stack carriers (50b, 50'b) are supported on a support device (54b) in such a way that they are displaceable and/or foldable away, out of a transport region (56b).
  6. Stacking device at least according to claim 1 or 2, characterised in that one of the drive units (32c-e, 32'c-e) drives only the stacking movement (22c-e) or only the transport movement (34c-e).
  7. Stacking device according to claim 6, characterised in that the stack support (24c) is implemented of a first belt element (58c) and the stack transporting means (30c) is implemented of a second belt element (60c) adjoining the first belt element (58c).
  8. Stacking device at least according to claim 6, characterised in that the stack transporting means (30d) is configured for transporting stacks (12d) out of a stack formation region (62d) to an onward transporting means (64d).
  9. Stacking device at least according to claim 6, characterised in that the stack support (24e) implements the stack transporting means (30e) for transporting stacks (12e) and, for a transport in a direction of a weight force (66e), is foldable away underneath the stacks (12e) and/or is supported in such a way that it is pullable and/or pivotable away in the direction of the weight force (66e) from below the stacks (12e).
  10. Stacking device according to one of the preceding claims, characterised in that the bag feeding means (26f) comprises a brake means (86f) that is configured, in at least one operation state, to exert a braking force (90f) onto at least one bag string section (88f) of the string of bags (16f), said braking force (90f) having at least one force component opposite to a movement direction (92f) of the bag string section (88f).
  11. Packaging machine (68a) with a stacking device (10a-e) according to one of the preceding claims.
  12. Method for a continuous formation of stacks (12a-e) from bags (18a) that are continuously fed in at least one string of bags (16a; d-e) comprising at least one row of bags (14a), which is endless and/or is severed respectively after a defined number of bags (18a) and
    which is deposited by a bag feeding means (26a-d) on at least one stack support (24a-e, 24'a; b), which is, at least during the formation of a stack (12a-e), moved back and forth in a stacking movement (22a-e, 22'a) that is parallel to a stacking layer direction (20a), and is deposited on the stack support (24a-e, 24'a; b) in such a way that the string of bags (16a, d-e) is bent due to the stacking movement (22a-e, 22a'a) respectively after a number of bags forming a stacking layer 28a; c; d) and forms zigzag-shaped stacking layers (28a; c; d), or that the string of bags (16a; d; e) is piled up due to the stacking movement (22a-e, 22'a) in stacking layers (28a; c; d) comprising the number of bags that form the stacking layer (28a, c; d) and having a consistent bag orientation,
    and, once a defined number of stacking layers (28a; c; d) has been reached, the stack (12a-e) is brought out of the influence zone of the stacking movement (22a-e) via at least one stack transporting means (30a-e, 30'a; b) for a transport of the stacks (12a-f),
    wherein a first drive unit (32a-e, 32'a; b) drives the stacking movement (22a-e) and a further drive unit (32'a-e, 32a; b) drives a transport movement (34a-e, 34'a) of at least one stack transporting means (30a-e, 30'a; b).
EP14762044.7A 2013-09-30 2014-09-12 Stacking device and method for uninterrupted stacks formation of continuously supplied pouches of a pouches chain Active EP3052415B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013219755.1A DE102013219755A1 (en) 2013-09-30 2013-09-30 stacker
PCT/EP2014/069563 WO2015043987A1 (en) 2013-09-30 2014-09-12 Stacking device

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EP3052415B1 true EP3052415B1 (en) 2020-03-25

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EP (1) EP3052415B1 (en)
JP (1) JP6307598B2 (en)
CN (1) CN105593150B (en)
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WO (1) WO2015043987A1 (en)

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DE102017006885A1 (en) * 2017-07-20 2019-01-24 Focke & Co. (Gmbh & Co. Kg) Method and device for handling bag chains
CN111619157B (en) * 2020-05-25 2021-11-19 浙江东晟包装科技有限公司 Device for producing corrugated case
CN113002058B (en) * 2021-03-09 2022-08-26 寻乌县桔都果业有限公司 Hard paper shell creasing machine for navel orange packaging

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Publication number Publication date
EP3052415A1 (en) 2016-08-10
JP2016536224A (en) 2016-11-24
DE102013219755A1 (en) 2015-04-02
JP6307598B2 (en) 2018-04-04
CN105593150A (en) 2016-05-18
US20160214827A1 (en) 2016-07-28
CN105593150B (en) 2019-04-23
WO2015043987A1 (en) 2015-04-02

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