EP0290879B1 - Device for filling and closing bags open at one side - Google Patents
Device for filling and closing bags open at one side Download PDFInfo
- Publication number
- EP0290879B1 EP0290879B1 EP88106847A EP88106847A EP0290879B1 EP 0290879 B1 EP0290879 B1 EP 0290879B1 EP 88106847 A EP88106847 A EP 88106847A EP 88106847 A EP88106847 A EP 88106847A EP 0290879 B1 EP0290879 B1 EP 0290879B1
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- EP
- European Patent Office
- Prior art keywords
- bags
- pivoting
- grippers
- conveyor belt
- filling
- 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.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/20—Reducing volume of filled material
- B65B1/22—Reducing volume of filled material by vibration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
- B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
- B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
- B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags
Definitions
- the invention relates to a device for filling and closing one-sided open, preferably with side gusseted sacks made of thermoplastic material with a pair of grippers which grasp the sacks in the region of their opening edges on the side regions, the grippers of which can be moved towards and away from one another, with one the side walls of the sacks in the area of the opening edges between the grippers that pull the suction cups apart, with a filler neck that can be lowered and lifted into the open sacks, and with a welding device that closes the opening edges, which are pulled apart and thus lying one on top of the other by a cross-weld seam.
- Numerous devices of this type are known which are provided with a transport device which conveys the bags from a first station, which is usually a feed station, in which the transport device takes over the individual bags provided with a bottom seam, into the filling station and after filling the sacks in a further conveying step is transported to a welding station in which, after filling, the taut opening edges of the sacks are provided with a transverse weld seam.
- the bags are usually released from the transport device in the welding station or in a further conveying step after the welding station and are transported away by a subsequent conveyor device. If the bags are made of paper, a sewing machine that closes the opening edges is provided instead of the welding station.
- the object of the invention is to provide a device of the type specified in the introduction, in which the sacks can be transported from the transfer station into the filling position below the filler neck and then into the welding station with simple means.
- this object is achieved in a device of the generic type in that a transfer conveyor is provided which conveys flat sacks provided with bottom seams hanging freely into the area below the filler neck and by the swivel arms provided with a swivel drive, which at their upper free ends carry the grippers, take over the bags in a position in which they are essentially aligned with the longitudinal axis of the filler neck, that the swivel drive pivots the swivel arms after filling the bags in the feed direction beyond the filler neck while depositing on a support in the welding station, in which the Welding jaws of the welding device projecting beyond the grippers and corresponding to the position of the swivel arms relative to the longitudinal center plane of the Sacks angled flags of the opening edges with cross-sealing seams closing the sacks, and that the swivel drive then swivels the swivel arms back to their filling position below the filler neck to take over and
- the device according to the invention is characterized by a simple and compact construction, because only for holding the bags in the filling station below the filler neck and for the subsequent transport of the bags into the welding station, in which the opened opening edges of the bags are provided with the transverse weld seams closing them a single pair of frame-mounted pivot arms is provided which carry the grippers.
- the device according to the invention not only has a simple and robust structure, but also eliminates the otherwise usual special means for clamping the sack to be filled to the filler neck.
- the free-hanging holder of the sacks to be filled on the swivel arms in the filling station also enables the sacks to be filled well, since the sack walls which initially lie on top of one another can expand freely under the pressure of the inflowing filling material.
- the swivel arms provided according to the invention and provided with the grippers ensure good holding and guiding of the bags to be filled from the transfer conveyor to the welding station.
- the swivel drive of the swivel arms expediently consists of pressure medium piston-cylinder units.
- the grippers are each connected to the swivel arms via two links and can be swiveled towards and away from one another by pressure medium piston-cylinder units relative to the swivel arms. This configuration ensures simple movement of the grippers towards and away from one another. Move before filling the grippers towards each other, so that the filling opening for inserting the filler neck can be opened by the suction cups.
- the inner links are expediently longer, the hinge points forming the corner points of a trapezoid.
- one of the links can be provided on its lower pivot shaft with an actuating lever on which one side of the pressure medium piston-cylinder unit moving the gripper is articulated.
- the other side of the pressure medium-piston-cylinder unit is connected in an articulated manner to the associated pivot lever.
- the upper ends of the links are each articulated on a support piece which is provided with a fixed gripper jaw, the movable gripper jaw being pivotable on a pressure medium-piston-cylinder unit.
- suction cups that pull apart the opening edges of the sacks to be filled can be attached to the ends of pivoted levers that are fixed to the frame.
- the pivot levers for parallel guidance of the suction cups each consist of two links.
- the base consists of a conveyor belt which intermittently transports the filled bags.
- This conveyor belt is intermittently advanced by a conveying step when the swivel arms pivot from the filling station while the filled bag is placed on the conveyor belt into the welding station, so that the upright position of the bag is maintained.
- the conveyor belt is expediently at a distance from the conveying steps Provide with the backrest-like support devices or support cams securing the standing position of the filled bags.
- control of the drive of the transfer conveyor and the conveyor belt are coordinated with one another in such a way that the sack to be filled has already been pivoted in a substantially hanging manner under the filler neck before the conveyor belt is switched on by one conveying step .
- the sack made of lobular material is supported obliquely on the outside of a support cam, which could cause malfunctions in that the bag can no longer assume its position below the filler neck between two support cams of the conveyor belt during filling.
- the welding jaws which interact in the manner of pliers, are fastened or mounted on a support which is mounted so as to be pivotable about the frame about an axis arranged transversely to the conveyor belt and by means of a pressure-piston-cylinder unit for unhindered removal of those standing on the conveyor belt Sacks can be swung up.
- vibrating plates which can be raised and lowered are provided, which give the floor area of the sack hanging freely during filling on the pair of grippers, shaking blows.
- the vibrating plates can be fastened by legs angled therefrom to two links, the other ends of which are mounted fixed on the frame, one end of a vibrating cylinder being articulated on one of the links, the other end of which is mounted fixed on the frame.
- a system for the manufacture of sacks, filling the sacks with a filling material and for transporting the filled sacks is shown schematically, which consists of a device 1 in which sacks are produced from a tubular film web provided with gussets and wound into a roll After a circular movement, the bags produced are transferred to the device 2 for filling and closing the bags by a transfer gripper (not shown) in a so-called cooling carousel.
- the device 2 for filling and closing the bags is the subject of the present invention.
- the bags are placed on a conveyor provided with support cams and provided with weld seams closing their opening edges. The bags are then dropped from this conveyor belt onto a conveyor belt 3 which conveys further.
- the gusseted bags produced in the device 1 are conveyed in the direction of arrow A into a transfer position below the filler neck 12 by a transfer conveyor 4, not shown in FIG. 1 and indicated only by the clamping jaws in FIG. 2. In this position, the bags are taken over by the grippers 6,6 'held on the swivel arms 5,5'. The grippers grip the freely hanging bags on opposite sides in the area of their opening edges. After the bags have been released, the transfer conveyor moves back to its outer position on guides, not shown, in which it takes over the next bag 11 to be transferred to the swivel arms.
- the swivel arms 5.5 ' are pivotally mounted on the side parts 7.7' of the machine frame and are aligned with each other journal 8.8 '.
- In the area of the journal 8.8 'lever 9 is attached to the pivot arms 5.5', at the free ends of which the piston rods are articulated by pressure-piston-cylinder units 10, the cylinders of which are mounted on the frame in the manner shown in FIG.
- the pressure-piston-cylinder units 10 are controlled such that the swivel arms 5.5 'with their gripper pairs 6.6' take over the bags 11 from the transfer conveyor 4 below the filler neck 12, keep them floating in the filling station until they are filled, and then place the filled bags on the conveyor belt 14 provided with the support cams 13 by pivoting in the direction of arrow B.
- the conveyor belt 14 is simultaneously advanced in such a way by a drive, not shown, that the welding jaws 15, 16, which interact in the manner of pliers, can close the flattened opening edge of each bag 11 by means of a transverse weld seam.
- the grippers 6, 6' of the pair of grippers can move towards and away from each other, the link 18, 19, 18 ', 19' the gripper hold substantially parallel to itself during pivoting.
- the holding pieces 17, 17 'of the grippers are provided with opposing finger-like jaws 24, 24'.
- the pivotable counter jaws are also designed finger-like and attached to angle levers 25 which are articulated in the region of their bends 26 in the manner shown in FIG. 2 with the holding pieces 17, 17 '.
- the piston rods of pressure medium piston-cylinder units 28 are articulated in the manner shown in FIG. 2, the cylinders of which are fastened with their upper ends to the holding pieces 17, 17 'via corresponding holding pieces.
- suction cups 29, 29 ' are articulated to their parallel guidance on links 30, 31 and 30', 31 ', the other ends of which are mounted on the frame.
- the gripping tongs 6, 6 'projecting flags of the opening edges of the bags 33 are then welded together by the welding jaws 15, 16 of the welding device 40.
- the welding device is pivotally mounted in the frame about an axis arranged transversely to the conveyor belt 14 and can be pivoted up by the pressure medium-piston-cylinder unit 41, so that the filled and closed bags after release from the welding jaws 15, 16 are freely accessible by the conveyor belt 14 the welding device 40 can be conveyed through.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Package Closures (AREA)
- Basic Packing Technique (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Befüllen und Verschließen einseitig offener, vorzugsweise mit Seitenfalten versehener Säcke aus thermoplastischem Kunststoff mit einem die Säcke im Bereich ihrer Öffnungsränder an den Seitenbereichen erfassenden Greiferpaar, dessen Greifer aufeinander zu und voneinander weg verfahrbar sind, mit einem die Seitenwandungen der Säcke im Bereich der Öffnungsränder zwischen den Greifern auseinanderziehenden Saugerpaar, mit einem in die geöffneten Säcke absenkbaren und hebbaren Füllstutzen und mit einer Schweißeinrichtung, die die durch Auseinanderfahren der Greifer straffgezogenen und dadurch aufeinanderliegenden Öffnungsränder durch eine Querschweißnaht verschließt.The invention relates to a device for filling and closing one-sided open, preferably with side gusseted sacks made of thermoplastic material with a pair of grippers which grasp the sacks in the region of their opening edges on the side regions, the grippers of which can be moved towards and away from one another, with one the side walls of the sacks in the area of the opening edges between the grippers that pull the suction cups apart, with a filler neck that can be lowered and lifted into the open sacks, and with a welding device that closes the opening edges, which are pulled apart and thus lying one on top of the other by a cross-weld seam.
Es sind zahlreiche Vorrichtungen dieser Art bekannt, die mit einer Transporteinrichtung versehen sind, die die Säcke von einer ersten Station, die üblicherweise eine Zuführungsstation ist, in der die Transporteinrichtung die einzelnen mit einer Bodennaht versehenen Säcke übernimmt, in die Füllstation befördert und nach dem Befüllen der Säcke in einem weiteren Förderschritt in eine Schweißstation transportiert, in der nach dem Befüllen die straffgezogenen Öffnungsränder der Säcke mit einer Querschweißnaht versehen werden. Die Säcke werden üblicherweise in der Schweißstation oder in einem weiteren Förderschritt nach der Schweißstation von der Transporteinrichtung freigegeben und von einer anschließenden Fördereinrichtung abtransportiert. Bestehen die Säcke aus Papier ist statt der Schweißstation eine deren Öffnungsränder verschließende Nähmaschine vorgesehen.Numerous devices of this type are known which are provided with a transport device which conveys the bags from a first station, which is usually a feed station, in which the transport device takes over the individual bags provided with a bottom seam, into the filling station and after filling the sacks in a further conveying step is transported to a welding station in which, after filling, the taut opening edges of the sacks are provided with a transverse weld seam. The bags are usually released from the transport device in the welding station or in a further conveying step after the welding station and are transported away by a subsequent conveyor device. If the bags are made of paper, a sewing machine that closes the opening edges is provided instead of the welding station.
Bekannte Vorrichtungen der eingangs angegebenen Art weisen insbesondere wegen der die Säcke durch die einzelnen Stationen transportierenden Transporteinrichtung eine aufwendige und daher teure Konstruktion auf.Known devices of the type specified at the outset have a complex and therefore expensive construction, in particular because of the transport device which transports the bags through the individual stations.
Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs angegebenen Art zu schaffen, in der sich die Säcke mit einfachen Mitteln von der Übergabestation in die Füllstellung unterhalb des Füllstutzens und anschließend in die Schweißstation befördern lassen.The object of the invention is to provide a device of the type specified in the introduction, in which the sacks can be transported from the transfer station into the filling position below the filler neck and then into the welding station with simple means.
Erfindungsgemäß wird diese Aufgabe bei einer Vorrichtung der gattungsgemäßen Art dadurch gelöst, daß ein Übergabeförderer vorgesehen ist, der mit Bodennähten versehene flache Säcke frei hängend bis in den Bereich unterhalb des Füllstutzens fördert und von dem mit einem Schwenkantrieb versehene Schwenkarme, die an ihren oberen freien Enden die Greifer tragen, die Säcke in einer Stellung übernehmen, in der diese im wesentlichen mit der Füllstutzenlängsachse fluchten, daß der Schwenkantrieb die Schwenkarme nach dem Befüllen der Säcke in Zuführungsrichtung über den Füllstutzen hinaus unter Absetzen auf eine Unterlage in die Schweißstation verschwenkt, in der die Schweißbacken der Schweißvorrichtung die die Greifer überragenden und entsprechend der Stellung der Schwenkarme relativ zur Längsmittelebene der Säcke abgwinkelten Fahnen der Öffnungsränder mit die Säcke verschließenden Querschweißnähten versehen, und daß der Schwenkantrieb die Schwenkarme anschließend zur Übernahme und Halterung des nächsten Sackes wieder in ihre Füllstellung unterhalb des Füllstutzens verschwenkt. Die erfindungsgemäße Vorrichtung zeichnet sich durch eine einfache und gedrungene Konstruktion aus, weil zum Halten der Säcke in der Füllstation unterhalb des Füllstutzens und zum anschließenden Weitertransport der Säcke in die Schweißstation, in der die auseinandergezogenen Öffnungsränder der Säcke mit den diese verschließenden Querschweißnähten versehen werden, nur ein einziges Paar von gestellfest gelagerten Schwenkarmen vorgesehen ist, die die Greifer tragen. Die erfindungsgemäße Vorrichtung weist nicht nur einen einfachen und robusten Aufbau auf, sondern es entfallen auch die sonst üblichen besonderen Mittel zum Anklemmen des zu befüllenden Sackes an den Füllstutzen. Die freihängende Halterung der zu befüllenden Säcke an den Schwenkarmen in der Füllstation ermöglicht überdies eine gute Befüllung der Säcke, da sich die zunächst aufeinanderliegenden Sackwandungen unter dem Druck des einströmenden Füllguts frei ausweiten können. Die erfindungsgemäß vorgesehenen, mit den Greifern versehenen Schwenkarme sichern eine gute Halterung und Führung der zu befüllenden Säcke von dem Übergabeförderer bis in die Schweißstation.According to the invention, this object is achieved in a device of the generic type in that a transfer conveyor is provided which conveys flat sacks provided with bottom seams hanging freely into the area below the filler neck and by the swivel arms provided with a swivel drive, which at their upper free ends carry the grippers, take over the bags in a position in which they are essentially aligned with the longitudinal axis of the filler neck, that the swivel drive pivots the swivel arms after filling the bags in the feed direction beyond the filler neck while depositing on a support in the welding station, in which the Welding jaws of the welding device projecting beyond the grippers and corresponding to the position of the swivel arms relative to the longitudinal center plane of the Sacks angled flags of the opening edges with cross-sealing seams closing the sacks, and that the swivel drive then swivels the swivel arms back to their filling position below the filler neck to take over and hold the next sack. The device according to the invention is characterized by a simple and compact construction, because only for holding the bags in the filling station below the filler neck and for the subsequent transport of the bags into the welding station, in which the opened opening edges of the bags are provided with the transverse weld seams closing them a single pair of frame-mounted pivot arms is provided which carry the grippers. The device according to the invention not only has a simple and robust structure, but also eliminates the otherwise usual special means for clamping the sack to be filled to the filler neck. The free-hanging holder of the sacks to be filled on the swivel arms in the filling station also enables the sacks to be filled well, since the sack walls which initially lie on top of one another can expand freely under the pressure of the inflowing filling material. The swivel arms provided according to the invention and provided with the grippers ensure good holding and guiding of the bags to be filled from the transfer conveyor to the welding station.
Der Schwenkantrieb der Schwenkarme besteht zweckmäßigerweise aus Druckmittel-Kolben-Zylindereinheiten.The swivel drive of the swivel arms expediently consists of pressure medium piston-cylinder units.
In weiterer Ausgestaltung der Erfindung sind die Greifer über jeweils zwei Lenker mit den Schwenkarmen verbunden und relativ zu den Schwenkarmen durch Druckmittel-Kolben-Zylindereinheiten aufeinander zu und voneinander weg verschwenkbar. Durch diese Ausgestaltung ist eine einfache Bewegung der Greifer aufeinander zu und voneinander weg gewährleistet. Vor dem Befüllen bewegen sich die Greifer aufeinander zu, so daß die Einfüllöffnung zum Einführen des Füllstutzens durch die Sauger aufgezogen werden kann.In a further embodiment of the invention, the grippers are each connected to the swivel arms via two links and can be swiveled towards and away from one another by pressure medium piston-cylinder units relative to the swivel arms. This configuration ensures simple movement of the grippers towards and away from one another. Move before filling the grippers towards each other, so that the filling opening for inserting the filler neck can be opened by the suction cups.
Zweckmäßigerweise sind die inneren Lenker länger ausgebildet, wobei die Gelenkpunkte die Eckpunkte eines Trapezes bilden. Zum Verschwenken der Lenker kann jeweils einer der Lenker an seiner unteren Schwenkwelle mit einem Betätigungshebel versehen sein, an dem eine Seite der den Greifer bewegenden Druckmittel-Kolben-Zylindereinheit angelenkt ist. Die andere Seite der Druckmittel-Kolben-Zylindereinheit ist mit dem zugehörigen Schwenkhebel gelenkig verbunden.The inner links are expediently longer, the hinge points forming the corner points of a trapezoid. To pivot the handlebars, one of the links can be provided on its lower pivot shaft with an actuating lever on which one side of the pressure medium piston-cylinder unit moving the gripper is articulated. The other side of the pressure medium-piston-cylinder unit is connected in an articulated manner to the associated pivot lever.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die oberen Enden der Lenker jeweils an einem Tragstück angelenkt sind, das mit einer festen Greiferbacke versehen ist, wobei an dem Tragstück die über eine Druckmittel-Kolben-Zylindereinheit verschwenkbare bewegliche Greiferbacke gelagert ist.In a further embodiment of the invention it is provided that the upper ends of the links are each articulated on a support piece which is provided with a fixed gripper jaw, the movable gripper jaw being pivotable on a pressure medium-piston-cylinder unit.
Die die Öffnungsränder der zu befüllenden Säcke auseinanderziehenden Sauger können an den Enden von gestellfest gelagerten Schwenkhebeln befestigt sein. Zweckmäßigerweise bestehen die Schwenkhebel zur Parallelführung der Sauger jeweils aus zwei Lenkern.The suction cups that pull apart the opening edges of the sacks to be filled can be attached to the ends of pivoted levers that are fixed to the frame. Advantageously, the pivot levers for parallel guidance of the suction cups each consist of two links.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die Unterlage aus einem die gefüllte Säcke intermittierend abfördernden Förderband besteht. Dieses Förderband wird intermittierend um einen Förderschritt weitergeschaltet, wenn die Schwenkarme von der Füllstation unter Absetzen des gefüllten Sackes auf das Förderband in die Schweißstation schwenken, damit die aufrechte Stellung des Sackes erhalten bleibt.In a further embodiment of the invention it is provided that the base consists of a conveyor belt which intermittently transports the filled bags. This conveyor belt is intermittently advanced by a conveying step when the swivel arms pivot from the filling station while the filled bag is placed on the conveyor belt into the welding station, so that the upright position of the bag is maintained.
Zweckmäßigerweise ist das Förderband im Abstand der Förderschritte mit die stehende Stellung der gefüllten Säcke sichernden lehnenartigen Stützeinrichtungen oder Stütznocken versehen.The conveyor belt is expediently at a distance from the conveying steps Provide with the backrest-like support devices or support cams securing the standing position of the filled bags.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die Steuerung des Antriebs des Übergabeförderers und des Förderbandes derart aufeinander abgestimmt sind, daß der zu befüllende Sack bereits im wesentlichen ruhig hängend unter den Füllstutzen verschwenkt worden ist, bevor das Förderband um einen Förder- schritt weitergeschaltet wird. Auf diese Weise wird verhindert, daß sich der aus lappigem Material bestehende Sack schräg auf der Außenseite eines Stütznockens abstützt, was Störungen dadurch verursachen könnte, daß der Sack während des Befüllens nicht mehr seine Stellung unterhalb des Füllstutzens zwischen zwei Stütznocken des Förderbandes einnehmen kann.In a further embodiment of the invention it is provided that the control of the drive of the transfer conveyor and the conveyor belt are coordinated with one another in such a way that the sack to be filled has already been pivoted in a substantially hanging manner under the filler neck before the conveyor belt is switched on by one conveying step . In this way it is prevented that the sack made of lobular material is supported obliquely on the outside of a support cam, which could cause malfunctions in that the bag can no longer assume its position below the filler neck between two support cams of the conveyor belt during filling.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die zangenartig zusammenwirkenden Schweißbacken an einem Träger befestigt bzw. gelagert sind, der gestellfest um eine quer zu dem Förderband angeordnete Achse schwenkbar gelagert und durch eine Druckmittel-Kolben-Zylindereinheit zum unbehinderten Abtransport der auf dem Förderband stehenden Säcke hochschwenkbar ist.In a further embodiment of the invention it is provided that the welding jaws, which interact in the manner of pliers, are fastened or mounted on a support which is mounted so as to be pivotable about the frame about an axis arranged transversely to the conveyor belt and by means of a pressure-piston-cylinder unit for unhindered removal of those standing on the conveyor belt Sacks can be swung up.
Nach einer erfinderischen Weiterbildung ist vorgesehen, daß oberhalb des Obertrums des Förderbandes im Bereich unterhalb des Füllstutzens beidseits der lehnenartigen Stützsocken heb- und absenkbare Rüttelplatten vorgesehen sind, die dem Bodenbereich des frei während des Befüllens an dem Greiferpaar hängenden Sackes rüttelnde Schläge erteilen. Die Rüttelplatten können durch von diesen abgewinkelte Schenkel an jeweils zwei Lenkern befestigt sein, deren anderen Enden gestellfest gelagert sind, wobei an einem der Lenker ein Ende eines Rüttelzylinders angelenkt ist, dessen anderes Ende gestellfest gelagert ist.According to an inventive further development, it is provided that above the upper run of the conveyor belt in the area below the filler neck on both sides of the backrest-like support socks, vibrating plates which can be raised and lowered are provided, which give the floor area of the sack hanging freely during filling on the pair of grippers, shaking blows. The vibrating plates can be fastened by legs angled therefrom to two links, the other ends of which are mounted fixed on the frame, one end of a vibrating cylinder being articulated on one of the links, the other end of which is mounted fixed on the frame.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt
- Fig. 1
- eine perspektivische Ansicht der Vorrichtung zum Befüllen und Verschließen von Säcken in schematischer Darstellung, die zwischen einer Vorrichtung zum Herstellen der Säcke und einem die gefüllten Säcke abfördernden Förderband angeordnet ist,
- Fig. 2
- eine Seitenansicht der Vorrichtung zum Befüllen und Verschließen der Säcke nach Fig. 1 und
- Fig. 3
- eine Vorderansicht der Vorrichtung nach Fig. 2, jeweils unter Weglassen von für das Verständnis unnötigen Teile.
- Fig. 1
- 2 shows a perspective view of the device for filling and closing bags in a schematic representation, which is arranged between a device for producing the bags and a conveyor belt that conveys the filled bags,
- Fig. 2
- a side view of the device for filling and closing the bags according to Fig. 1 and
- Fig. 3
- a front view of the device of FIG. 2, each omitting parts unnecessary for understanding.
In Fig. 1 ist eine Anlage zum Herstellen von Säcken, Befüllen der Säcke mit einem Füllgut und zum Abtransport der gefüllten Säcke schematisch dargestellt, die aus einer Vorrichtung 1 besteht, in der ausgehend von einer zu einer Rolle aufgewickelten mit Seitenfalten versehenen Schlauchfolienbahn Säcke hergestellt und die hergestellten Säcke nach einer kreisenden Bewegung in einem sogennanten Kühlkarussell durch nicht dargestellte Übergabegreifer der Vorrichtung 2 zum Befüllen und Verschließen der Säcke übergeben werden. Die Vorrichtung 2 zum Befüllen und Verschließen der Säcke ist Gegenstand der vorliegenden Erfindung. In der Vorrichtung 2 werden die Säcke nach ihrem Befüllen auf einen mit Stütznocken versehenen Förderer abgesetzt und mit ihre Öffnungsränder verschließenden Schweißnähten versehen. Von diesem Förderband werden sodann die Säcke auf ein weiterförderndes Förderband 3 abgeworfen.In Fig. 1, a system for the manufacture of sacks, filling the sacks with a filling material and for transporting the filled sacks is shown schematically, which consists of a device 1 in which sacks are produced from a tubular film web provided with gussets and wound into a roll After a circular movement, the bags produced are transferred to the
Die Vorrichtung zum Befüllen und Verschließen der Säcke wird nun anhand der Fig. 2 und 3 näher erläutert.The device for filling and closing the bags will now be explained in more detail with reference to FIGS. 2 and 3.
Die in der Vorrichtung 1 hergestellten Seitenfaltensäcke werden durch einen in Fig.1 nicht dargestellten und in Fig. 2 nur durch die Klemmbacken angedeuteten Übergabeförderer 4 in Richtung des Pfeils A in eine Übergabestellung unterhalb des Füllstutzens 12 gefördert. In dieser Stellung werden die Säcke von den an den Schwenkarmen 5,5′ gehalterten Greifern 6,6′ übernommen. Die Greifer erfassen die freihängenden Säcke an gegenüberliegenden Seiten im Bereich ihrer Öffnungsränder. Der Übergabeförderer fährt nach Freigabe der Säcke auf nicht dargestellten Führungen in seine äußere Stellung zurück, in der er den nächsten an die Schwenkarme zu übergebenden Sack 11 übernimmt.The gusseted bags produced in the device 1 are conveyed in the direction of arrow A into a transfer position below the
Die Schwenkarme 5,5′ sind auf an den Seitenteilen 7,7′ des Maschinengestells befestigten und miteinander fluchtenden Achszapfen 8,8′ schwenkbar gelagert. Im Bereich der Achszapfen 8,8′ sind an den Schwenkarmen 5,5′ Hebel 9 befestigt, an deren freien Enden die Kolbenstangen von Druckmittel-Kolben-Zylindereinheiten 10 angelenkt sind, deren Zylinder in der aus Fig.2 ersichtlichen Weise gestellfest gelagert sind. Die Druckmittel-Kolben-Zylindereinheiten 10 sind derart gesteuert, daß die Schwenkarme 5,5′ mit ihren Greiferpaaren 6,6′ die Säcke 11 von dem Übergabeförderer 4 unterhalb des Füllstutzens 12 übernehmen, diese in der Füllstation bis zu ihrer Befüllung frei schwebend halten und anschließend die gefüllten Säcke durch Verschwenken in Richtung des Pfeils B auf das mit den Stütznocken 13 versehene Förderband 14 absetzen. Das Förderband 14 wird gleichzeitig in der Weise durch einen nicht dargestellten Antrieb weitergeschaltet, daß die zangenartig zusammenwirkenden Schweißbacken 15,16 den flachgezogenen Öffnungsrand jedes Sackes 11 durch eine Querschweißnaht verschließen können.The swivel arms 5.5 'are pivotally mounted on the side parts 7.7' of the machine frame and are aligned with each other journal 8.8 '. In the area of the journal 8.8 'lever 9 is attached to the pivot arms 5.5', at the free ends of which the piston rods are articulated by pressure-piston-
Die Greifzangen 6, 6′ bestehen aus einem Halteteil 17, 17′ das gelenkig mit den oberen Enden von Lenkern 18, 19 und 18′, 19′ verbunden ist, deren unteren Enden in der aus Fig. 3 ersichtlichen Weise gelenkig mit den Schwenkhebeln 5, 5′ verbunden sind. Die jeweils längeren inneren Lenker 18, 18′ sind uim Bereich ihrer unteren Gelenke mit nach außen weisenden Betätigungshebeln 20, 20′ starr verbunden, an deren freien Enden die Kolbenstangen von Druckmittel-Kolben-Zylindereinheiten 21, 21′ angelenkt sind, deren Zylinder gelenkig mit den unteren Bereichen der Schwenkhebel 5, 5′ verbunden sind, die als Halteteile bis über die Achszapfen 8,8′ hinaus verlängert sind. Durch entsprechende gleichzeitige Betätigung der Druckmittel-Kolben-Zylindereinheiten 21, 21′ durch nicht dargestellte Steuereinrichtungen lassen sich somit die Greifzangen 6, 6′ des Greiferpaares aufeinander zu und voneinander weg begegen, wobei die Lenker 18, 19, 18′, 19′ die Greifer im wesentlichen parallel zu sich selbst während des Verschwenkens halten.The
Die Haltestücke 17, 17′ der Greifer sind mit gegeneinander gerichteten fingerartigen Klemmbacken 24, 24′ versehen. Die schwenkbaren Gegenbacken sind ebenfalls entsprechend fingerartig ausgebildet und an Winkelhebeln 25 befestigt, die im Bereich ihrer Abwinkelungen 26 in der aus Fig. 2 ersichtlichen Weise gelenkig mit den Haltestücken 17, 17′ verbunden sind. An den Winkelhebeln 25 sind in der aus Fig. 2 ersichtlichen Weise die Kolbenstangen von Druckmittel-Kolben-Zylindereinheiten 28 angelenkt, deren Zylinder über entsprechende Haltestücke mit ihren oberen Enden an den Haltestücken 17, 17′ befestigt sind.The
Nachdem der jeweils zu befüllende Sack 11 von den Schwenkarmen 5, 5′ unter den Füllstutzen 12 verschwenkt und die Greifer 6, 6′ aufeinanderzu verfahren worden sind, ziehen die Sauger 29, 29′ die Öffnungsränder des Sackes zwischen den zangenartig zusammenwirkenden Klemmbacken der Greifer auseinander, so daß der Füllstutzen in der aus Fig. 1 ersichtlichen Weise in die Öffnung zwischen den auseinandergezogenen Sackrändern einfahren kann.After the
Die Sauger 29, 29′ sind zu ihrer Parallelführung an Lenkern 30, 31 und 30′, 31′ angelenkt, deren anderen Enden gestellfest gelagert sind. Die Lenkr 30, 30′ sind in der aus Fig. 2 ersichtlichen Weise im Bereich ihrer gestellfesten Gelenke mit Betätigungshebeln versehen, deren freien Enden an Druckmittel-Kolben-Zylindereinheiten 32, 32′ angelenkt sind.The
Nach dem Befüllen setzen die Schwenkarme 5, 5′ den Sack 33, der während des Befüllens in der aus Fig. 2 durch strichpunktierte Linien angedeuteten Weise von den Greifern frei hängend gehalten ist, auf das Förderband 14 ab. Dabei werden die Greifzangen 6, 6′ wieder auseinandergefahren, so daß die Öffnungsränder durch Auseinanderziehen in Anlage aneinander gebracht werden. Die die Greifzangen 6, 6′ überragenden Fahnen der Öffnungsränder der Säcke 33 werden sodann durch die Schweißbacken 15, 16 der Schweißeinrichtung 40 miteinander verschweißt. Die Schweißeinrichtung ist insgesamt um eine zum Förderband 14 quer angeordnete Achse im Gestell schwenkbar gelagert und kann durch die Druckmittel-Kolben-Zylindereinheit 41 hochgeschwenkt werden, so daß die gefüllten und verschlossenen Säcke nach Freigabe von den Schweißbacken 15, 16 behinderungsfrei durch das Förderband 14 unter der Schweißvorrichtung 40 hindurch abgefördert werden können.After filling, the
Oberhalb des Obertrums 43 des Förderbandes 14 sind beidseits der lehnenartigen Haltenocken 13 Rüttelbleche 44, 44′ vorgesehen, die mit abgewinkelten Schwenkeln 45, 45′ versehen sind, an denen die einen Enden von Parallellenkern 46, 47 angelenkt sind, deren anderen Enden gestellfest gelagert sind. Der Lenker 47 ist in der aus Fig. 2 ersichtlichen Weise mit einem hebelartigen Fortsatz versehen, an dessen freiem Ende die Kolbenstange eines Rüttelzylinders 48 angelenkt ist, dessen Zylinder im Gestell angelenkt ist. Wie aus Fig. 2 ersichtlich ist, bewirken rüttelnde Bewegungen der Kolbenstange der Druckmittel-Kolben-Zylindereinheit 48 rüttelnde Heb- und Senkbewegungen der Rüttelplatten 44, 44′, die dadurch dem Bodenbereich des frei in der Füllstation hängenden Sackes rüttelnde Schläge erteilen.Above the upper run 43 of the
Claims (14)
- Device for filling and closing bags (11) open at one side, preferably provided with side folds, made of a thermoplastic synthetic material
with a gripper pair seizing the bags (11) in the region of their opening edges at the side zones, whose grippers (6, 6') are displaceable towards and from each other,
with a pair of suction devices (29, 29') drawing the sides of the bags apart in the region of the opening edges between the grippers,
with a filling pipe (12) that can be lowered into the opened bags and be raised, and
a welding device (40) which seals by transverse welds the opening edges of the bags (11) drawn taut, and therefore lying on each other, by the separating movement of the grippers,
characterized in that
provision is made for a feeder conveyor (4) feeding the flat freely suspended bags (11) provided with bottom seams into the zone beneath the filling pipe (12), whence pivoting arms (5, 5') provided with a pivoting drive (10) and carrying the grippers (6, 6') at their free upper ends take over the bags (11) in a position wherein the latter are substantially aligned with the filling pipe axis; that after the bags have been filled, the pivoting drive (10) pivots the pivoting arms (5, 5') while depositing the bags on a support, in the feeding direction (B) beyond the filling pipe (12) into the welding station (40), wherein the welding jaws (15, 16) of the welding device (40) provide the strips of the opening edges projecting over the grippers (6, 6') and being bent according to the position of the pivoting arms (5, 5') relative to the longitudinal median plane with transverse welds sealing the bags (33); and that for taking over and holding the next bag (11) the pivoting drive (10) subsequently pivots the pivoting arms (5, 5') back into their filling position beneath the filling pipe (12). - Device according to claim 1, characterized in that the pivoting drive of the pivoting arms (5, 5') consists of pressure medium piston-cylinder units (10).
- Device according to claim 1 or 2, characterized in that the grippers (6, 6') are connected to the pivoting arms (5, 5') via two connecting rods (18, 19; 18', 19') respectively, and can be pivoted towards and from each other relative to the pivoting arms by means of pressure medium piston-cylinder units (21).
- Device according to one of claims 1 to 3, characterized in that the inner connecting rods (18, 18') are designed to be longer, and their hinge points form the corner points of a trapezium.
- Device according to one of claims 1 to 4, characterized in that one of the connecting rods (18, 18') is respectively provided at its bottom pivoting shaft or in the zone of its articulation to the pivoting arm with an actuation lever (20, 20') whereto there is articulated one side of the pressure medium piston-cylinder units (21, 21') moving the grippers (6, 6').
- Device according to one of claims 1 to 5, characterized in that the top ends of the connecting rods (18, 19; 18', 19') are respectively articulated to a supporting member (17, 17') provided with a fixed gripper jaw (24, 24') and that the pivotably mounted gripper jaws movable by pressure medium piston-cylinder units (28) are mounted on the supporting member (17, 17').
- Device according to one of claims 1 to 6, characterized in that the suction devices (29, 29') drawing apart the opening edges of the bags to be filled are secured to the ends of pivoting levers mounted fixed to the frame.
- Device according to claim 7, characterized in that the pivoting levers of the suction devices consist respectively of two cranks (30, 31; 30', 31').
- Device according to one of claims 1 to 8, characterized in that the support consists of a conveyor belt (14) which intermittently removes the filled bags (33).
- Device according to one of claims 1 to 9, characterized in that the conveyor belt (14) is provided in accordance with the intervals of the conveyance steps with back rest-type supporting devices securing the upright position of the filled bags (33), or with supporting dogs (13).
- Device according to one of claims 1 to 10, characterized in that the drives of the feeding conveyor (4) and of the conveyor belt (14) are coordinated in such a way that the bag (11) to be filled has already been pivoted beneath the filling pipe (12) being suspended in a substantially undisturbed condition before the conveyor belt (14) is passed on by one conveyance step.
- Device according to one of claims 1 to 11, characterized in that the welding jaws (15, 16) cooperating in the manner of pincers are secured or mounted on a support mounted for pivoting round a pin arranged fixedly to the frame and transversely to the conveyor belt (14) and which can be swung up by a pressure medium piston-cylinder unit (41) for the unimpeded removal of the bags (33) disposed on the conveyor belt (14).
- Device according to one of claims 1 to 12, characterized in that, above the upper side (43) of the conveyor belt (14) and beneath the filling pipe (12), provision is made on both sides of the backrest-type supporting dogs (13) for plate vibrators delivering during the filling vibratory impacts to the bottom region of the bag which is freely suspended on the gripper pair (6, 6').
- Device according to claim 13, characterized in that the plate vibrators (44, 44') are mounted by arms (45, 45') offset with respect to the latter on two cranks (46, 47) respectively, whose other ends are secured to the frame, and that at the end of one (47) of the cranks there is articulated one end of a cylinder vibrator (48) whose other end is mounted secured to the frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3715684 | 1987-05-11 | ||
| DE3715684 | 1987-05-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0290879A2 EP0290879A2 (en) | 1988-11-17 |
| EP0290879A3 EP0290879A3 (en) | 1989-08-02 |
| EP0290879B1 true EP0290879B1 (en) | 1992-11-11 |
Family
ID=6327278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88106847A Expired - Lifetime EP0290879B1 (en) | 1987-05-11 | 1988-04-28 | Device for filling and closing bags open at one side |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4873815A (en) |
| EP (1) | EP0290879B1 (en) |
| JP (1) | JP2571603B2 (en) |
| DE (1) | DE3875795D1 (en) |
| ES (1) | ES2035883T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19708596C1 (en) * | 1997-02-03 | 1998-06-10 | Windmoeller & Hoelscher | Procedure for manufacture, filling and sealing of bags |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9203380U1 (en) * | 1992-03-13 | 1992-07-30 | Chronos Richardson GmbH, 5202 Hennef | Transfer device for gripping and placing a filled bag and transferring it to a closing device |
| DE9207679U1 (en) * | 1992-03-23 | 1992-08-27 | Windmöller & Hölscher, 4540 Lengerich | Device for filling one-sided open bags |
| US5463845A (en) * | 1993-12-10 | 1995-11-07 | General Mills, Inc. | Apparatus for folding, filling, and sealing microwave popcorn bags |
| US5507132A (en) * | 1993-12-10 | 1996-04-16 | General Mills, Inc. | Apparatus for opening microwave popcorn bags |
| US5480372A (en) * | 1993-12-10 | 1996-01-02 | General Mills, Inc. | Apparatus for folding and loading microwave popcorn bags into a fixture |
| US5463848A (en) * | 1993-12-10 | 1995-11-07 | General Mills, Inc. | Apparatus for folding and ejecting microwave popcorn bags from a fixture |
| JP3713108B2 (en) * | 1996-08-14 | 2005-11-02 | 富士写真フイルム株式会社 | Pillow type packaging equipment |
| JP3827777B2 (en) * | 1996-09-17 | 2006-09-27 | 四国化工機株式会社 | Packaging container molding flap |
| JPH10217363A (en) * | 1997-02-03 | 1998-08-18 | Windmoeller & Hoelscher | Method and apparatus for manufacturing bag, and filling and closing it |
| DE19718207A1 (en) * | 1997-04-30 | 1998-11-05 | Iwk Verpackungstechnik Gmbh | Tube filling machine |
| SE509483C2 (en) | 1997-06-04 | 1999-02-01 | Nordisk Plaatindustri Benetec | Method and apparatus for handling bags in automated packaging of cage clocks |
| NZ329864A (en) * | 1998-02-27 | 1998-09-24 | Equipment Technology Ltd | Packaging apparatus with bag fitted over mouth of station where product is ejected horizontally into bag |
| DE19920478C2 (en) * | 1999-05-04 | 2001-05-03 | Windmoeller & Hoelscher | Device for producing and preferably also for filling and closing bags made of thermoplastic material |
| ES2273629T3 (en) | 1999-05-04 | 2007-05-16 | WINDMOLLER & HOLSCHER | DEVICE FOR FILLING AND CLOSING BAGS. |
| DE19933486C2 (en) * | 1999-05-04 | 2001-06-13 | Windmoeller & Hoelscher | Device for filling and closing bags |
| US20040261900A1 (en) * | 1999-11-18 | 2004-12-30 | Ensor Mark E. | Apparatus for bagging particulate matter with sewing machine |
| US6604344B2 (en) * | 2001-11-30 | 2003-08-12 | Harry Bussey, Jr. | Bagging machine |
| DE10306615B4 (en) * | 2003-02-14 | 2008-06-12 | Windmöller & Hölscher Kg | Process for the production of sacks |
| DE102004034489A1 (en) * | 2004-07-16 | 2006-04-20 | Windmöller & Hölscher Kg | Method and device for producing and filling bags |
| ES2301347B1 (en) * | 2006-03-27 | 2009-05-01 | Payper, S.A. | AUTOMATIC SALADING MACHINE. |
| DE102006022709A1 (en) * | 2006-05-12 | 2007-11-15 | Windmöller & Hölscher Kg | Forming, filling, sealing machine and method for producing, filling and closing sacks |
| US10368861B2 (en) * | 2015-06-18 | 2019-08-06 | Ethicon Llc | Dual articulation drive system arrangements for articulatable surgical instruments |
| ITUB20154145A1 (en) * | 2015-10-02 | 2017-04-02 | Martini Srl | PACKAGING MACHINE |
| DE102017109495A1 (en) * | 2017-05-03 | 2018-11-08 | Haver & Boecker Ohg | Apparatus and method for filling bulk materials in open sacks |
| DE102018206356A1 (en) * | 2018-02-19 | 2019-10-17 | Windmöller & Hölscher Kg | Filling device and method for filling sacks, each with an unclosed upper end |
| DE102018110637A1 (en) * | 2018-05-03 | 2019-11-07 | Haver & Boecker Ohg | Apparatus and method for filling bulk materials in open sacks |
| JP7448141B2 (en) * | 2020-03-30 | 2024-03-12 | ゼネラルパッカー株式会社 | Packaging machine with bottom receiving device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4411296A (en) * | 1980-06-03 | 1983-10-25 | W. G. Durant Corporation | Valve bag placer |
| DE3118866C2 (en) * | 1981-05-13 | 1984-04-12 | Haver & Boecker, 4740 Oelde | "Machine for filling and closing plastic sacks, preferably gusseted sacks or flat sacks" |
| US4423583A (en) * | 1981-07-23 | 1984-01-03 | Rexham Corporation | Packaging machine with pouch gripping clamps |
| DE3416567A1 (en) * | 1984-05-04 | 1985-12-05 | Rovema Verpackungsmaschinen GmbH, 6301 Fernwald | Machine for filling and sealing bags |
| US4612965A (en) * | 1984-08-30 | 1986-09-23 | Mcgregor Harold R | Automatic bag hanging device |
-
1988
- 1988-04-28 EP EP88106847A patent/EP0290879B1/en not_active Expired - Lifetime
- 1988-04-28 DE DE8888106847T patent/DE3875795D1/en not_active Expired - Lifetime
- 1988-04-28 ES ES198888106847T patent/ES2035883T3/en not_active Expired - Lifetime
- 1988-05-09 JP JP63112317A patent/JP2571603B2/en not_active Expired - Lifetime
- 1988-05-11 US US07/192,635 patent/US4873815A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19708596C1 (en) * | 1997-02-03 | 1998-06-10 | Windmoeller & Hoelscher | Procedure for manufacture, filling and sealing of bags |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0290879A2 (en) | 1988-11-17 |
| JP2571603B2 (en) | 1997-01-16 |
| US4873815A (en) | 1989-10-17 |
| ES2035883T3 (en) | 1993-05-01 |
| DE3875795D1 (en) | 1992-12-17 |
| EP0290879A3 (en) | 1989-08-02 |
| JPS63294322A (en) | 1988-12-01 |
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