EP0806346B1 - Packaging machine equipped with a system to form a tube - Google Patents

Packaging machine equipped with a system to form a tube Download PDF

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Publication number
EP0806346B1
EP0806346B1 EP97106684A EP97106684A EP0806346B1 EP 0806346 B1 EP0806346 B1 EP 0806346B1 EP 97106684 A EP97106684 A EP 97106684A EP 97106684 A EP97106684 A EP 97106684A EP 0806346 B1 EP0806346 B1 EP 0806346B1
Authority
EP
European Patent Office
Prior art keywords
shaping
edges
tube
film
packing machine
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
Application number
EP97106684A
Other languages
German (de)
French (fr)
Other versions
EP0806346A3 (en
EP0806346A2 (en
Inventor
Manfred Sautter
Hannes Neumüller
Jens Kallfass
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.)
Kallfass Verpackungsmaschinen GmbH and Co
Original Assignee
Kallfass Verpackungsmaschinen GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kallfass Verpackungsmaschinen GmbH and Co filed Critical Kallfass Verpackungsmaschinen GmbH and Co
Priority to EP99108893A priority Critical patent/EP0941927A3/en
Publication of EP0806346A2 publication Critical patent/EP0806346A2/en
Publication of EP0806346A3 publication Critical patent/EP0806346A3/en
Application granted granted Critical
Publication of EP0806346B1 publication Critical patent/EP0806346B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/02Arrangements to enable adjustments to be made while the machine is running
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00Automatic control, checking, warning, or safety devices
    • B65B57/10Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • B65B57/12Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of wrapping materials, containers, or packages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/001Arrangements to enable adjustments related to the product to be packaged
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/003Arrangements to enable adjustments related to the packaging material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B2009/063Forming shoulders

Definitions

  • the present invention relates to a packaging machine for packaging objects in a film, with a Hose forming device for forming a hose a substantially flat film before tube formation and a transport device for transporting the objects into the tube, the tube forming device several Has pairs of shaped edges for deflecting the film.
  • a packaging machine of the type mentioned is from DE 40 21 934 A1 known.
  • the tube forming device has several baffles, which essentially have three pairs of shaped edges, around which the film is guided one after the other.
  • a The first foil-like baffle guides the packaging film diagonally downwards against the transport direction of the packing objects to, the film by means of first baffle and two further scissors-shaped Deflectors are deflected and formed into a tube, of the objects to be packed in the direction of transport expires.
  • the individual shaped edges of the baffles are included arranged in relation to each other in such a way that the film over which form edge or over which area of the guide plates it runs, is evenly tensioned and even, i.e. runs over the edges without distortion. From the film one after the other overflowed form edges lie in pairs on a common level.
  • the present invention is therefore based on the object a packaging machine with an improved tube forming device of the type mentioned at the beginning. Especially should avoid excessive strain on the film and a Overstretching of the film can be prevented.
  • This task is the beginning of a packaging machine mentioned type according to the invention solved in that the shaped edges are arranged relative to each other in such a way that the path over the form edges along to the edges of the film more parallel Lines from entry of the film into the tube forming device until they exit the tube forming device in the area of the edges of the film is shorter than in a central area of the film.
  • the film is guided over the edges of the mold so that the The edges of the film are free of tension or loosely over the edges to run. This has the advantage that the film on the Protect edges from excessive tension and stretching is.
  • the film runs despite the not constant Stress distribution without wrinkles via the tube forming device. So far it has always been assumed that the way over the shape edges parallel to the edges of the film for everyone Areas of the film must be the same length to prevent that the film converges towards its central area and accordingly wrinkles. However, the opposite is the case Case.
  • the film that is drawn or drawn over the edges of the mold tries to run over the form edges in the shortest possible way and becomes very easily transverse to the film longitudinal direction The edges are tightened so that there are no folds.
  • the Foil or parts thereof one after the other over first shaped edges a first shape shoulder and second and third shape edges a second shape shoulder.
  • first shaped edges Preferably each one of the first mold edges and an associated, i.e. of the same Foil piece overflowed second mold edge not in one Level.
  • the shape edges of the same pair of shape edges can be in lie on a common level.
  • the first shape shoulder can be from the second shape shoulder separated, i.e. not be connected to it and is expediently arranged above the second shape shoulder.
  • the first shape shoulder is preferably in the form of a trapezoidal in particular formed multi-piece sheet metal part and the second form shoulder, essentially in the transport plane the transport device lies, has two essentially triangular pieces of sheet metal that scissors each other overlap such that the third form edges in the hose exit direction converge and overlap, and that the second mold edges in the hose exit direction diverge.
  • the shape shoulders can be of different Be made of materials, but have the form shoulders in sheet metal construction advantages in terms of a simple and stable design. Instead of the flat, plate-shaped design of the shaped shoulders can also be rack-like in such a way that skeleton-like only the shape edges are provided, but has the plate-shaped sheet metal construction advantages in terms of even and smoothly sliding film guidance.
  • the degree of entanglement of the over the shape edges of the running foil and the amount of the distance difference between the areas where the Edge of the slide runs and the area where a midsection the film runs over the edges of the mold is adjustable. This allows the stress distribution in the film and the Belly the film on the film edges between one after the other has the following shape edges.
  • the adjustability of the angular orientation at least individual shape edges has the advantage that the geometry the tube forming device to different foils different Strengths and made of different materials can be adjusted.
  • the angular orientation is also in Depends on the size of the items to be packed adjustable to different objects, the one different hose geometry and different Overlap widths require that the film optimally over the To pull the hose forming device. In particular, this can to what extent the edge of the film is loose runs over the form edges and the tension in the film distributed differently.
  • the corresponding have adjustable mold edges an adjustment range that this Shape edges with the corresponding shape edges of the next one Form edge pair do not lie in one plane and themselves always an entanglement of the led over the form edges Film results and the edge areas of the film free of tension and are relaxed.
  • the shape edges are expediently in one common level swiveling.
  • the angle of the shape edges one another is adjustable in this plane.
  • the first shape shoulder has two sheets, which are in one common plane and each have a first shape edge have, the sheets perpendicular to each axis are pivotable to the common plane.
  • the sheets can that is, pivoted in the plane that you define yourself become.
  • the first shape shoulder can also be a whole be pivotable substantially horizontal axis, whereby the effective angle of the first shape edges relative to the second mold edge is adjustable, but has the previous described execution advantages in terms of a simple Swivel bearing of the shaped shoulder plates.
  • the first and second form edges in their Extension each at one point, with the first shape edges are more spread than the second form edges.
  • the orientation of the mold edges is preferably such that also the projection of the between the first shape edges included angle in the plane of the second mold edges is greater than the angle between the second mold edges is limited.
  • the shape edges can be translationally displaceable, preferably the shape edges in pairs in each opposite direction displaceable and at least one Pair of mold edges relative to the other mold edges is movable, in particular such that a height and a width of the tube formed from the film is adjustable is.
  • the items to be packaged become conventional on the side of the tube forming device that the Side on which the film formed into a tube from the Hose forming device expires, lies opposite, delivered and through the tube forming device between the forming shoulders transported through the drain hose.
  • the transport device or at Multi-piece design of the transport device a section to insert the same into the tube forming device, around the corresponding object via the shaped sheets transport away into the draining hose can.
  • this known design is structural relatively complicated and economically unsatisfactory.
  • a packaging machine with an improved transport facility created, in particular the transport device reliable transport even of different sizes Objects with different settings of the hose shaping device into the tube formed from the film cause. This is the position of a downstream end the transport device adjustable.
  • the downstream end of the transport device is such adjustable that the objects to be transported too with different settings of the hose shaping device always directly to the hose forming device introduced and to those in the tube forming device running film can be pushed. Between the end of the Transport device and the tube forming device is not or only a minimal gap that prevents the forward movement of the could hinder transporting object.
  • the downstream end of the transport device is preferably synchronized with the moveable shape shoulder of the Hose shaping device adjustable.
  • the adjustable end the transport device is thus of the movable type Form shoulder coupled that when adjusting the form shoulder for example for different geometries of the items to be packed simultaneously and automatically the transport device is adjusted accordingly such that the end of the transport means immediately the shape shoulder ends and no larger gap between the Transport device and the shape shoulder is created.
  • the transport device is adjustable in length. This owns the Advantage that the upstream end of the transport device stationary, especially following a feeder can be arranged for the objects and at the same time the Position of the downstream end of the transport device is adjustable.
  • the downstream end of the transport device is preferably to an opposite contour of the tube forming device adapted, preferably a leading edge of the Hose forming device over which the objects in the tube forming device are pushed, is V-shaped and the downstream end of the transport device tongue-shaped in the V-shaped recess of the hose shaping device extends.
  • To adjust the tube forming device to allow without using the transport device collide is the downstream end of the transport device so forward and backward in the direction of transport, that the complementary V-shaped end of the transport device moved back when the V-shaped opening of the Hose forming device is narrowed to a scissors order a smaller width of the tube emerging from the film adjust.
  • the transport device advantageously has at least an endless conveying means rotating around deflecting means, whereby the funding at the downstream end of the Transport device around a movable deflection unit is led.
  • the displaceable deflection unit over which the funding is S-shaped, between two fixed deflection means arranged and parallel to the straight sections of the conveyor between the Deflection unit and the two fixed deflection means back and forth movable.
  • the funding is without a special Tensioning device such as tensioning rollers, can be pre-tensioned.
  • a length adjustment of the conveyor path, i.e. a The deflection unit can be moved without changing the length of the Path that the funding travels.
  • the funding advantageously has one uniform tension, not like inertia effects for example with a dancer roller, which is usually used for Tension of endless belts is used is impaired.
  • the transport device preferably has a plurality narrow, parallel conveyor belts, preferably the conveyor belts at the downstream end of the transport device around rollers offset in steps are guided, such that the downstream end step adapted the V-shaped front of the tube forming device is.
  • the roles can be on a common, movable Sled mounted and synchronized with each other in parallel be displaceable to the conveying direction.
  • a removal device preferably closes for removal the objects wrapped in the hose to a Exit side of the tube forming device essentially flush with this. This has the advantage that the Objects directly at the outlet from the tube forming device be taken over by the removal device.
  • the discharge device preferably has a suction belt conveyor, where the objects wrapped in the tube be sucked into a conveyor belt. The suction causes also the transport of the from the tube molding device leaking hose if there are no objects in it are included. The suction does the necessary Adhesion of the hose to the conveyor belt.
  • the discharge device could also be an electrostatic attraction Provide film on the conveyor belt, but has the suction of the draining hose advantages in terms of stable static friction between film and conveyor belt, in particular even with different foils.
  • an automatically adjustable packaging machine in particular an adjustment device for adjustment the tube forming device for different ones to be packaged Objects and a control device for control the adjusting device depending on object parameters such as. Length, width and height etc. of the item are provided.
  • the object parameters can, for example, by hand a corresponding input unit can be entered.
  • the packaging machine has a storage device for storing one item at a time assigned object parameters, the control device the corresponding object parameters by means of a reading unit reads from the storage device and in Depending on these stored parameters, the setting device controls.
  • an input unit provided with which the item to be packaged entered can be. According to the selection of the packaged The control device then reads the object Object parameters associated with the object from the storage device, around the adjusting device accordingly head for.
  • a detection device could also be used be provided, with the help of which each packaging object is automatically detected. Corresponding the result of the automatic detection will then be the respective item parameters read from memory in order to to control the setting device.
  • the detection device can be connected to an evaluation unit evaluate which stored object the captured Item corresponds or comes closest.
  • the adjusting device can have several servomotors, the respective different axes of movement of the tube forming device are assigned and by the control device are controlled. Both translational are preferred Sliding axes as well as the angle adjustment axes the hose shaping device each assigned actuators.
  • Stepper motors can be used as servomotors be an indirect distance measurement by counting the Step pulses are provided.
  • Servomotors can also be used be provided, with a direct path measurement by pulse generator and an evaluation in a suitable controller can be provided.
  • the adjusting device with the transport device is preferably coupled.
  • the transport device is therefore also automatically to the item to be packed and the corresponding setting of the tube forming device customized.
  • downstream units such as one Foil sealing device can be controlled.
  • the control device described can be particularly advantageous also set up the tube forming device completely new items to be packaged are simplified, by first of all coming closest to the new object known item is selected. The control device then causes a presetting according to the for known subject stored parameters. A fine adjustment can then, for example, after a test run respectively. There is preferably a parameter input unit for this intended.
  • the packaging machine has a tube forming device 1, a transport device 2, with which to be packed Objects 4 through the tube forming device 1 in a tube 6 formed from film 5 can be transported, and a discharge device 3, which from the tube forming device 1 emerging hose 6 and the arranged therein Objects 4 transported away from the tube forming device 1 (Fig. 1).
  • the tube molding device 1 has an upper, first shape shoulder 7 and a lower, second form shoulder 8 on (Fig. 4), over which the film 5, from a supply roll 9 over a compensating roller 10 is removed, performed in succession is used as the hose 6 from the hose shaping device 1 to resign.
  • the hose 6 essentially has one rectangular cross-section, being at the bottom of the hose 6 overlap the edges 11 of the film 5.
  • the two form shoulders 7 and 8 essentially span two Levels that are inclined to each other and approximately in the transport level defined by the transport device 2 to cut.
  • the lower, second shape shoulder 8 is essentially in the conveying plane of the transport device 2 while the upper, first shape shoulder 7 in the conveying direction 13 increasing so that the film 5, which over the upper form shoulder 7 is pulled, as shown in FIG. 4 from the right is fed up to the bottom left.
  • the shape shoulders 7 and 8 have several pairs of shape edges, over which the film 5 is guided and kinked to the tube 6 to be molded.
  • the upper shape shoulder 7 has a first pair of molded edges 12 on its outer sides, over which the outer edge regions of the film 5 close to them Edges 11 is first performed before this the lower Reach shape shoulder 8.
  • the first shape edges 12 are in a common level, namely the level of the form shoulder 7 and converge in the direction of the first shape shoulder 7 drawn film 5.
  • the extensions of the mold edges 12 intersect at a convergence angle u (Fig. 5). As shown in Fig. 5). As shown in Fig.
  • the baffles 14 are Metal sheets.
  • the lower, second shape shoulder 8 also has two Baffles 15 and 16, but not like the baffles 14 lie in one plane, but in two parallel planes are arranged and overlap each other, wherein between the two baffles 15 and 16 according to a narrower 1 is a horizontal gap, by which the film 5 can be guided, as below will be explained.
  • the two guide plates 15 and 16 are essentially triangular and together have a second pair of mold edges 17, which are arranged on the outer sides of the shaped shoulder 8, and a third pair of mold edges 18 that overlap each other and a V-shaped opening at the front of the shape shoulder 8 limit.
  • the diverge second mold edges 17 in the direction of from the tube molding device 1 emerging hose 6. Extensions of the second mold edges 17 intersect at a convergence angle v.
  • the third shape edges 18 converge in the direction of the exiting hose 6 and limit in the projection an angle to the conveying plane of the transport device 2 w.
  • a fourth pair of mold edges 19 over which the film 5 is guided is located on a front side of the upper shape shoulder 7 and lies on a common straight line.
  • the arrangement of the mold edges to one another is such that the path over the different shape edges 12, 17, 18 and 19 along different lines leading to the edges 11 of the slide 5 are each parallel, measured from an entry of the Film 5 in the tube forming device 1 at an entry edge 20 until the exit of the film 5 on a vertical Cross section of the hose 6 at the rear edges 21 of the lower Form shoulder 8 is of different lengths.
  • the prescribed path in areas near the edges 11 of the Slide 5 shorter than in areas to the longitudinal central axis of the Slide 5 down. This leads, as will be described in more detail later will, that the edges 11 loose and untensioned run over the form edges and especially in the area between the first mold edges 12 and the second mold edges 17 form a belly (Fig. 4).
  • first mold edge 12 and second Form edge 17 are each of the film 5 successively overflowed first mold edge 12 and second Form edge 17, i.e. 5 a right one of the first and second mold edges and a left one of the first and second mold edges, not arranged in a common plane, but are skewed towards each other.
  • the slide 5 is thereby in the area between the first mold edges 12 and the second mold edges 17 crossed.
  • the inclination angle z of the first shape shoulder 7 is a large number possible combinations of angles of angles u, v and w, to the one hand the absence of tension of the edges 11 and others the entanglement of the film 5 in the area between to achieve two associated shape edges 12 and 17.
  • At an angle z of 45 ° can be the angles u, v and w, for example 70, 20 and 90 °. If you project that in the plane of the first shape shoulder 7 lying angle u in is the plane of the angle v in the conveying plane the projection of the angle u is always greater than the angle v.
  • the shape edges 12, 17 and 18 are around and along different axes movable.
  • a height of the hose 6 To be able to adjust is along the first shape shoulder 7 an axis a parallel to a straight line connecting the Front edge 19 of the first shape shoulder 7 and a front edge 210 of the second shape shoulder 8 slidably (Fig. 6).
  • a Carrier 22 with the two guide plates 14 of the first shape shoulder 7 is connected is displaceable along the axis a mounted on a stand 23 and with an arm 24 with a spindle 25 for height adjustment of the first shape shoulder 7 engaged.
  • a moving with the shape shoulder This eliminates the need for a handwheel.
  • the spindle 25 can of Hand, preferably driven by means of an actuator 50 become.
  • the carrier 22 and the stand 23 are made in two parts and connected to each of the baffles 14 to the Baffles 14 along an axis b transverse to the conveying direction the transport device 2 and thereby a width of the running hose 6 to be able to adjust.
  • the adjustment the guide plates 14 of the upper shape shoulder 7 takes place preferably in synchronization with a corresponding width setting the guide plates 15 and 16 of the lower form shoulder 8 also along a direction b.
  • the two stands 23 can be fixed with one of the guide plates 15 or 16 be connected or they can with the two baffles 15th and 16 can be coupled to a common setting spindle 26. As shown in Fig.
  • the two baffles 15 and 16 each with a spindle nut 27 or 28 with different common sections of the adjusting spindle 26 in Engagement, so that with actuation of the spindle 26, the width of the V-shaped opening bounded by the third mold edges 18 the lower shape shoulder 8 is set.
  • spindle drive are other drive or. Adjustment devices can be used, but the shown spindle drive with a simple design a high Precision.
  • the spindle 26 can preferably by hand a suitable servomotor 51 are driven.
  • the axes c are each at a lower outer end of the baffles 14.
  • the location of the connection points the first mold edge 12 and the fourth mold edge 19 doing the same for different swivel positions Baffles 14, such that the imaginary connection between the fourth pair of mold edges 19 and the tips, i.e. the Connecting points of the second and third form edges, remains unchanged.
  • the baffles 14 By pivoting the baffles 14 the angle of convergence u changes.
  • the adjustment range is thereby such that the convergence angle u or its projection in the plane of the angle v is always greater than that Angle v. This will entangle the film 5 in Area between the first mold edges 12 and the second Form edges 17 reached.
  • the baffles 14 are each on a plate-shaped base support 29 pivotally mounted.
  • the baffles 14 can, for example, with one another via a spindle be coupled, similar to the two guide plates 15 and 16.
  • a servomotor not shown, can also be provided for this be.
  • the fourth mold edges 19 formed by cylindrical rollers 30 attached to the base support 29 are rotatably mounted.
  • the rollers 30 reduce that Strain on the film 5 due to the relatively acute angle Deflection on the mold edge 4 and reduce the friction of the Slide 5 on this form edge.
  • the Tension the film 15, as described in more detail later will be in the areas of the edges 11 and the bulky the film between the first mold edges 12 and set the second mold edges 17.
  • the conveyor belts 31 are arranged offset by steps Rollers 32, 33, 34 and 35 guided such that the ends of the individual conveyor belts 31 are V-shaped and of the third mold edges 18 limited V-shaped opening of the lower shape shoulder 7 are adapted.
  • baffles 15 and 16 transverse to the direction of transport with a constant small gap between the transport device 2 and the V-shaped front of the lower one Achieving shape shoulder 8 is the complementarily graded downstream end of the conveyor 2 forward and retractable in such a way that the conveying path of the transport device 2 is adjustable in length.
  • the rollers 32, 33, 34 and 35 which are the downstream end set, are mounted on a common carriage 36, the in the conveying direction by means of plain or roller bearings 37 moveable on a frame of the Packaging machine is stored.
  • the lower form shoulder widens 8, i.e. when the two guide plates are pushed apart 15 and 16 transversely to the conveying direction, the downstream End pushed forward in the conveying direction, no gap between the transport device 2 and the lower form shoulder 8 to be created.
  • the carriage 36 is preferably in synchronism with the width adjustment the lower form shoulder 8 slidably.
  • the synchronous circuit of the slide 36 with the shaped plates 15 and 16 can also be done using appropriately controlled actuators done individually, but the coupling shown has two Spindle drives with a simple design a high precision.
  • the adjustment spindle 26 and the slide spindle 38 can together by hand or with a suitable servomotor are driven.
  • the individual conveyor belts 31 guided such that the endlessly rotating conveyor belts 31 covered distances for different Settings of the downstream end of the upper run the transport device 2 are the same.
  • the individual conveyor belts 31 are first individually or in pairs around the slidably mounted pulleys 32, 33, 34 and 35 led and then together around a common pulley 41, which is also rotatable on the sliding carriage 36 is stored and together with the guide rollers 32, 33, 34 and 35 displaceable in a direction parallel to the conveying direction is.
  • the conveyor belts 31 are each S-shaped one of the deflection rollers 32, 33, 34 and 35 and the deflection roller 41 out.
  • the deflection rollers mounted on the slide 36 32 to 35 and 41 are rotatable between two fixed mounted deflection rollers 42 and 43 arranged around each the conveyor belts 31 is guided.
  • the section of the conveyor belts 31 between the deflection roller 43 and the deflection rollers 32 to 35 and the section of the conveyor belts 31 between the Deflection roller 41 and the deflection roller 42 run in each other parallel planes.
  • the movable deflection unit with the Deflection rollers 32 to 35 and 41 can be parallel to these planes be moved back and forth in the conveying direction to the Position of the downstream end of the conveyor 2 to be set, whereby the conveyor belts 31 distance traveled is constant.
  • the conveyor belts 31 can therefore with a predetermined and constant Voltage are applied.
  • the tube forming device 1 For the removal of objects 4 on the hose outlet side the tube forming device 1 is a discharge device 3 provided.
  • the discharge device 3 has one Air suction holes 44 perforated suction conveyor 45, the endlessly revolves and its top in the plane of the second, lower shape shoulder 8.
  • the upstream end of the conveyor of the conveyor 3 closes flush with a rear edge of the second, lower form shoulder 8 and takes over in the Tube pushed objects 4 and the film tube 6 even downstream of the hose forming device 1.
  • the tube forming device 1 itself i.e. in the field of lower form shoulder 8 is therefore not a conveyor intended.
  • the transport of the objects 4 in this area takes place indirectly through the film 5, which over the baffles 15 and 16 of the second, lower mold shoulder 8 is pulled.
  • the suction conveyor 3 also acts as a puller for the film 5 and can also be packaged in the absence of Objects 4 the film 5 through the tube forming device 1 pull. In particular threading the film 5 in the tube forming device 1 is thereby
  • the packaging machine shown also has a control device and a storage device shown in the figures are not shown.
  • the storage device are under corresponding names assigned to the objects Item parameters such as height, width, Length and other parameters that affect the setting of the tube forming device affect how color of the Object or type of film, necessary melting temperature etc. saved.
  • the control device is in each case with the Actuators connected to this depending on the stored To control object parameters.
  • An input unit also not shown, is used the item to be packaged is selected, after which the under the corresponding name saved parameters the control device can be read from the data memory.
  • the control device uses this to calculate the target position for the actuators and controls them with appropriate Signals.
  • the calculated values are over a Transfer the bus system to the engine control.
  • the servomotors move to the desired position and report via the bus system reaching the position value to the control. Accordingly, the tube forming device becomes complete automatically only by entering the item to be packed set.
  • the film 5 is in the tube forming device 1 threaded.
  • the film 5 from the supply roll of Hand removed and over the guide plates 14 of the upper form shoulder 7 led.
  • the edge areas of the film 5 are over the first mold edges 12 of the first, upper mold shoulder 7 drawn and successively around the second and third mold edges one of the guide plates 15 and 16 guided.
  • the one under the Guide plate 15 guided section of the film 5 and on the Top of the baffle 16 folded edge of the film 5th are through the gap between the two baffles 15 and 16 drawn.
  • the film 5 is so far through the tube forming device 1 drawn that a sufficient section the conveyor 3 comes to rest.
  • the width and required for the respective objects 4 Height of the running hose 6 is by pressing the Adjustment spindle 26 and the height adjustment spindle 46 set. This can be done before or after threading the film 5 and is controlled by the control device and the servomotors, which form a motorized adjusting device, according to a corresponding entry of the object causes.
  • the objects 4 are, according to FIG. 1, from left to right transported on the transport device 2 and in the the shoulders 7 and 8 stretched membrane tunnel.
  • the objects are in the area of the lower shape shoulder 8 4 through the drawn over the lower shape shoulder 8 Slide 5 transported. Downstream of the hose shaping device 1 the objects are removed by the conveyor 3 and possibly fed to a welding device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

Die vorliegende Erfindung betrifft eine Verpackungsmaschine zum Verpacken von Gegenständen in eine Folie, mit einer Schlauchformeinrichtung zur Formung eines Schlauches aus einer vor der Schlauchformung im wesentlichen ebenen Folie und einer Transporteinrichtung zum Transport der Gegenstände in den Schlauch, wobei die Schlauchformeinrichtung mehrere Paare von Formkanten zur Umlenkung der Folie aufweist.The present invention relates to a packaging machine for packaging objects in a film, with a Hose forming device for forming a hose a substantially flat film before tube formation and a transport device for transporting the objects into the tube, the tube forming device several Has pairs of shaped edges for deflecting the film.

Eine Verpackungsmaschine der genannten Art ist aus der DE 40 21 934 A1 bekannt. Bei dieser herkömmlichen Verpackungsmaschine besitzt die Schlauchformvorrichtung mehrere Leitbleche, die im wesentlichen drei Paare von Formkanten aufweisen, um die herum die Folie nacheinander geführt wird. Ein erstes flügelartiges Leitblech führt die Verpackungsfolie schräg nach unten entgegen der Transportrichtung der zu verpackenden Gegenstände zu, wobei die Folie mittels dem ersten Leitblech und zweier weiterer scherenförmig angeordneter Leitbleche umgelenkt und zu einem Schlauch geformt wird, der in der Transportrichtung der zu verpackenden Gegenstände abläuft. Die einzelnen Formkanten der Leitbleche sind dabei zueinander derart angeordnet, daß die Folie unabhängig davon, über welche Formkante oder über welchen Bereich der Leitbleche sie läuft, gleichmäßig gespannt ist und eben, d.h. verwindungsfrei über die Kanten läuft. Von der Folie nacheinander überlaufene Formkanten liegen dabei jeweils paarweise in einer gemeinsamen Ebene.A packaging machine of the type mentioned is from DE 40 21 934 A1 known. With this conventional packaging machine the tube forming device has several baffles, which essentially have three pairs of shaped edges, around which the film is guided one after the other. A The first foil-like baffle guides the packaging film diagonally downwards against the transport direction of the packing objects to, the film by means of first baffle and two further scissors-shaped Deflectors are deflected and formed into a tube, of the objects to be packed in the direction of transport expires. The individual shaped edges of the baffles are included arranged in relation to each other in such a way that the film over which form edge or over which area of the guide plates it runs, is evenly tensioned and even, i.e. runs over the edges without distortion. From the film one after the other overflowed form edges lie in pairs on a common level.

Derartige Verpackungsmaschinen sind jedoch hinsichtlich der Folienführung durch die Schaufelformeinrichtung unbefriedigend.Such packaging machines are, however, in terms of Film guidance through the blade forming device unsatisfactory.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Verpackungsmaschine mit einer verbesserten Schlauchformeinrichtung der eingangs genannten Art anzugeben. Insbesondere soll eine Überbeanspruchung der Folie vermieden und ein Überdehnen der Folie verhindert werden.The present invention is therefore based on the object a packaging machine with an improved tube forming device of the type mentioned at the beginning. Especially should avoid excessive strain on the film and a Overstretching of the film can be prevented.

Diese Aufgabe wird bei einer Verpackungsmaschine der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß die Formkanten relativ zueinander derart angeordnet sind, daß der Weg über die Formkanten entlang zu den Rändern der Folie paralleler Linien von einem Eintritt der Folie in die Schlauchformeinrichtung bis zu deren Austritt aus der Schlauchformeinrichtung im Bereich der Ränder der Folie kürzer ist als in einem Mittelbereich der Folie.This task is the beginning of a packaging machine mentioned type according to the invention solved in that the shaped edges are arranged relative to each other in such a way that the path over the form edges along to the edges of the film more parallel Lines from entry of the film into the tube forming device until they exit the tube forming device in the area of the edges of the film is shorter than in a central area of the film.

Die Folie wird derart über die Formkanten geführt, daß die Ränder der Folie spannungsfrei bzw. locker über die Formkanten laufen. Dies besitzt den Vorteil, daß die Folie an den Rändern vor übermäßiger Spannung und Überdehnung geschützt ist.The film is guided over the edges of the mold so that the The edges of the film are free of tension or loosely over the edges to run. This has the advantage that the film on the Protect edges from excessive tension and stretching is.

Überraschenderweise läuft die Folie trotz der nicht konstanten Spannungsverteilung faltenfrei über die Schlauchformeinrichtung. Bislang wurde immer angenommen, daß der Weg über die Formkanten parallel zu den Rändern der Folie für alle Bereiche der Folie gleich lang sein muß, um zu verhindern, daß die Folie zu ihrem Mittelbereich hin zusammenläuft und dementsprechend Falten wirft. Das Gegenteil ist jedoch der Fall. Die über die Formkanten geführte bzw. gezogene Folie versucht, auf kürzestem Wege über die Formkanten zu laufen und wird quer zur Folienlängsrichtung ganz leicht zu den Rändern hin gestrafft, so daß keine Falten entstehen.Surprisingly, the film runs despite the not constant Stress distribution without wrinkles via the tube forming device. So far it has always been assumed that the way over the shape edges parallel to the edges of the film for everyone Areas of the film must be the same length to prevent that the film converges towards its central area and accordingly wrinkles. However, the opposite is the case Case. The film that is drawn or drawn over the edges of the mold tries to run over the form edges in the shortest possible way and becomes very easily transverse to the film longitudinal direction The edges are tightened so that there are no folds.

Gemäß einer bevorzugten Ausführung der Erfindung läuft die Folie bzw. Teile hiervon nacheinander über erste Formkanten einer ersten Formschulter und zweite und dritte Formkanten einer zweiten Formschulter. Vorzugsweise liegen je eine der ersten Formkanten und eine zugehörige, d.h. von dem gleichen Folienstück überlaufene zweite Formkante nicht in einer Ebene. Die Formkanten des selben Formkantenpaares können in einer gemeinsamen Ebene liegen.According to a preferred embodiment of the invention, the Foil or parts thereof one after the other over first shaped edges a first shape shoulder and second and third shape edges a second shape shoulder. Preferably each one of the first mold edges and an associated, i.e. of the same Foil piece overflowed second mold edge not in one Level. The shape edges of the same pair of shape edges can be in lie on a common level.

Von der Folie nacheinander überlaufene Kanten sind also zueinander windschief ausgerichtet. Bislang wurde davon ausgegangen, daß von der Folie nacheinander überlaufene Formkanten in einer Ebene liegen müssen, um die Folie faltenfrei und gleichmäßig gespannt über die Formkanten der Schlauchformeinrichtung zu führen. Im Gegensatz hierzu sind gemäß einer vorteilhaften Ausführung der Erfindung insbesondere je eine der ersten Formkanten und eine zugehörige zweite Formkante relativ zueinander derart angeordnet, daß die Folie zwischen den jeweils zusammengehörenden ersten und zweiten Formkanten verschränkt ist. Dies besitzt den Vorteil, daß die Folie sanft und locker über die Formkanten geführt wird.So there are edges overlapped by the film aligned skew to each other. So far it has been assumed that the film overflowed one after the other Molded edges must lie in one plane to make the film wrinkle-free and evenly stretched over the edges of the mold To guide hose shaping device. In contrast to that according to an advantageous embodiment of the invention in particular one of the first mold edges and an associated second one Form edge arranged relative to each other such that the film between the respectively belonging first and second Is edged. This has the advantage that the Film is gently and loosely passed over the edges

Die erste Formschulter kann von der zweiten Formschulter getrennt, d.h. nicht mit dieser verbunden sein und ist zweckmäßigerweise oberhalb der zweiten Formschulter angeordnet. Vorzugsweise ist die erste Formschulter als trapezförmiges, insbesondere mehrstückiges Blechteil ausgebildet und die zweite Formschulter, die im wesentlichen in der Transportebene der Transporteinrichtung liegt, weist zwei im wesentlichen dreieckförmige Blechstücke auf, die einander scherenförmig überlappen, derart, daß die dritten Formkanten in Schlauchaustrittsrichtung konvergieren und einander überlappen, und daß die zweiten Formkanten in Schlauchaustrittsrichtung auseinander gehen. Die Formschultern können aus verschiedenen Werkstoffen hergestellt sein, jedoch besitzen die Formschultern in Blechkonstruktion Vorteile hinsichtlich einer einfachen und stabilen Gestaltung. Anstelle der flächigen, plattenförmigen Ausgestaltung der Formschultern können diese auch gestellartig ausgebildet sein derart, daß gerippeartig nur die Formkanten vorgesehen sind, jedoch besitzt die plattenförmige Blechkonstruktion Vorteile hinsichtlich einer gleichmäßigen und sanft gleitenden Folienführung.The first shape shoulder can be from the second shape shoulder separated, i.e. not be connected to it and is expediently arranged above the second shape shoulder. The first shape shoulder is preferably in the form of a trapezoidal in particular formed multi-piece sheet metal part and the second form shoulder, essentially in the transport plane the transport device lies, has two essentially triangular pieces of sheet metal that scissors each other overlap such that the third form edges in the hose exit direction converge and overlap, and that the second mold edges in the hose exit direction diverge. The shape shoulders can be of different Be made of materials, but have the form shoulders in sheet metal construction advantages in terms of a simple and stable design. Instead of the flat, plate-shaped design of the shaped shoulders can also be rack-like in such a way that skeleton-like only the shape edges are provided, but has the plate-shaped sheet metal construction advantages in terms of even and smoothly sliding film guidance.

In Weiterbildung der Erfindung ist die Winkelausrichtung zumindest eines der Formkantenpaare, insbesondere der ersten Formkanten, einstellbar. Der Grad der Verschränkung der über die Formkanten laufenden Folie und der Betrag des Wegstreckenunterschieds zwischen den Bereichen, in denen der Rand der Folie läuft und dem Bereich, in dem ein Mittelabschnitt der Folie über die Formkanten läuft, ist einstellbar. Dadurch kann die Spannungsverteilung in der Folie und der Bauch, den die Folie an den Folienrändern zwischen nacheinander folgenden Formkanten besitzt, eingestellt werden.In a further development of the invention is the angular alignment at least one of the pairs of mold edges, in particular the first Molded edges, adjustable. The degree of entanglement of the over the shape edges of the running foil and the amount of the distance difference between the areas where the Edge of the slide runs and the area where a midsection the film runs over the edges of the mold is adjustable. This allows the stress distribution in the film and the Belly the film on the film edges between one after the other has the following shape edges.

Bislang ist davon ausgegangen worden, daß eine Anordnung der Formkanten, die einer vorgegebenen Bedingung für die Wegstrecken verschiedener zu den Rändern der Folie parallelen Linien über die Formkanten entspricht, für unterschiedliche Folien gleichermaßen funktioniert. Dies trifft jedoch nicht zu. Die Einstellbarkeit der Winkelausrichtung zumindest einzelner Formkanten besitzt den Vorteil, daß die Geometrie der Schlauchformeinrichtung an verschiedene Folien unterschiedlicher Stärken und aus unterschiedlichen Materialien angepaßt weden kann. Die Winkelausrichtung ist auch in Abhängigkeit der Größe der zu verpackenden Gegenstände einstellbar, um bei unterschiedlichen Gegenständen, die eine unterschiedliche Schlauchgeometrie und unterschiedliche Überlappungsbreiten erfordern, die Folie optimal über die Schlauchformeinrichtung zu ziehen. Insbesondere kann dadurch eingestellt werden, in welchem Maße der Rand der Folie locker über die Formkanten läuft und die Spannung sich in der Folie unterschiedlich verteilt. Dabei besitzen die entsprechenden verstellbaren Formkanten einen Verstellbereich, daß diese Formkanten mit den jeweils zugehörigen Formkanten des nächsten Formkantenpaares nicht in einer Ebene liegen und sich stets eine Verschränkung der über die Formkanten geführten Folie ergibt und die Randbereiche der Folie spannungsfrei und locker geführt sind.So far it has been assumed that an arrangement of the Form edges, which are a predetermined condition for the distances different parallel to the edges of the film Lines across the form edges correspond for different Foils work equally. However, this is not the case to. The adjustability of the angular orientation at least individual shape edges has the advantage that the geometry the tube forming device to different foils different Strengths and made of different materials can be adjusted. The angular orientation is also in Depends on the size of the items to be packed adjustable to different objects, the one different hose geometry and different Overlap widths require that the film optimally over the To pull the hose forming device. In particular, this can to what extent the edge of the film is loose runs over the form edges and the tension in the film distributed differently. The corresponding have adjustable mold edges an adjustment range that this Shape edges with the corresponding shape edges of the next one Form edge pair do not lie in one plane and themselves always an entanglement of the led over the form edges Film results and the edge areas of the film free of tension and are relaxed.

Zweckmäßigerweise sind die Formkanten jeweils in einer gemeinsamen Ebene schwenkbar. Der Winkel der Formkanten zueinander in dieser Ebene ist also einstellbar. Vorzugsweise besitzt die erste Formschulter zwei Bleche, die in einer gemeinsamen Ebene angeordnet sind und je eine erste Formkante aufweisen, wobei die Bleche um jeweils eine Achse senkrecht zu der gemeinsamen Ebene schwenkbar sind. Die Bleche können also in der Ebene, die sie selbst definieren, geschwenkt werden. Die erste Formschulter kann auch als ganzes um eine im wesentlichen horizontale Achse schwenkbar sein, wodurch der effektive Winkel der ersten Formkanten relativ zu den zweiten Formkanten einstellbar ist, jedoch besitzt die zuvor beschriebene Ausführung Vorteile hinsichtlich einer einfachen Schwenklagerung der Formschulterbleche.The shape edges are expediently in one common level swiveling. The angle of the shape edges one another is adjustable in this plane. Preferably the first shape shoulder has two sheets, which are in one common plane and each have a first shape edge have, the sheets perpendicular to each axis are pivotable to the common plane. The sheets can that is, pivoted in the plane that you define yourself become. The first shape shoulder can also be a whole be pivotable substantially horizontal axis, whereby the effective angle of the first shape edges relative to the second mold edge is adjustable, but has the previous described execution advantages in terms of a simple Swivel bearing of the shaped shoulder plates.

Gemäß einer vorteilhaften Ausführung der Erfindung schneiden sich jeweils die ersten und zweiten Formkanten in ihrer Verlängerung jeweils in einem Punkt, wobei die ersten Formkanten stärker gespreizt sind als die zweiten Formkanten. Cut according to an advantageous embodiment of the invention the first and second form edges in their Extension each at one point, with the first shape edges are more spread than the second form edges.

Vorzugsweise ist die Ausrichtung der Formkanten derart, daß auch die Projektion des zwischen den ersten Formkanten eingeschlossenen Winkels in die Ebene der zweiten Formkanten größer ist als der Winkel, der zwischen den zweiten Formkanten begrenzt ist.The orientation of the mold edges is preferably such that also the projection of the between the first shape edges included angle in the plane of the second mold edges is greater than the angle between the second mold edges is limited.

Die Formkanten können translatorisch verschieblich sein, wobei vorzugsweise die Formkanten paarweise in jeweils entgegengesetzter Richtung verschieblich und zumindest ein Paar der Formkanten relativ zu den weiteren Formkanten verschieblich ist, insbesondere derart, daß eine Höhe und eine Breite des aus der Folie geformten Schlauches einstellbar ist.The shape edges can be translationally displaceable, preferably the shape edges in pairs in each opposite direction displaceable and at least one Pair of mold edges relative to the other mold edges is movable, in particular such that a height and a width of the tube formed from the film is adjustable is.

Bei einer Verpackungsmaschine der eingangs genannten Art werden die Gegenstände, die zu verpacken sind, herkömmlicherweise auf der Seite der Schlauchformeinrichtung, die der Seite, auf der die zum Schlauch geformte Folie aus der Schlauchformeinrichtung abläuft, gegenüberliegt, angeliefert und durch die Schlauchformeinrichtung zwischen den Formschultern hindurch in den ablaufenden Schlauch transportiert. Dabei ist es bekannt, die Transporteinrichtung bzw. bei mehrstückiger Ausbildung der Transporteinrichtung ein Teilstück derselben in die Schlauchformeinrichtung hineinzuführen, um den entsprechenden Gegenstand über die Formbleche hinweg in den ablaufenden Schlauch hinein transportieren zu können. Diese bekannte Ausführung ist jedoch bautechnisch relativ kompliziert und platzökonomisch unbefriedigend.In a packaging machine of the type mentioned the items to be packaged become conventional on the side of the tube forming device that the Side on which the film formed into a tube from the Hose forming device expires, lies opposite, delivered and through the tube forming device between the forming shoulders transported through the drain hose. It is known that the transport device or at Multi-piece design of the transport device a section to insert the same into the tube forming device, around the corresponding object via the shaped sheets transport away into the draining hose can. However, this known design is structural relatively complicated and economically unsatisfactory.

Nach einem weiteren Merkmal der Erfindung wird eine Verpackungsmaschine mit einer verbesserten Transporteinrichtung geschaffen, bei der insbesondere die Transporteinrichtung einen zuverlässigen Transport auch unterschiedlich großer Gegenstände bei unterschiedlichen Einstellungen der Schlauchformeinrichtung in den aus der Folie geformten Schlauch bewirken. Dazu ist die Position eines stromabseitigen Endes der Transporteinrichtung einstellbar.According to a further feature of the invention, a packaging machine with an improved transport facility created, in particular the transport device reliable transport even of different sizes Objects with different settings of the hose shaping device into the tube formed from the film cause. This is the position of a downstream end the transport device adjustable.

Im Bereich der Schlauchformeinrichtung selbst ist keine Transporteinrichtung vorgesehen und die Gegenstände werden in dem Bereich der Schlauchformeinrichtung mittelbar durch die Folie selbst transportiert.There is none in the area of the tube forming device itself Transport device is provided and the items are in the area of the tube forming device indirectly through the Foil transported itself.

Das stromabseitige Ende der Transporteinrichtung ist derart verstellbar, daß die zu transportierenden Gegenstände auch bei unterschiedlichen Einstellungen der Schlauchformeinrichtung stets unmittelbar bis an die Schlauchformeinrichtung herangeführt und auf die in der Schlauchformeinrichtung laufende Folie geschoben werden können. Zwischen dem Ende der Transporteinrichtung und der Schlauchformeinrichtung ist kein bzw. nur ein minimaler Spalt, der die Vorwärtsbewegung des zu transportierenden Gegenstandes behindern könnte.The downstream end of the transport device is such adjustable that the objects to be transported too with different settings of the hose shaping device always directly to the hose forming device introduced and to those in the tube forming device running film can be pushed. Between the end of the Transport device and the tube forming device is not or only a minimal gap that prevents the forward movement of the could hinder transporting object.

Vorzugsweise ist das stromabseitige Ende der Transporteinrichtung synchron mit der beweglichen Formschulter der Schlauchformeinrichtung einstellbar. Das verstellbare Ende der Transporteinrichtung ist also derart mit der beweglichen Formschulter gekoppelt, daß bei einer Verstellung der Formschulter beispielsweise für unterschiedliche Geometrien der zu verpackenden Gegenstände gleichzeitig und automatisch eine entsprechende Einstellung der Transporteinrichtung erfolgt derart, daß das Ende der Transporteinrichtung unmittelbar an der Formschulter endet und kein größerer Spalt zwischen der Transporteinrichtung und der Formschulter entsteht.The downstream end of the transport device is preferably synchronized with the moveable shape shoulder of the Hose shaping device adjustable. The adjustable end the transport device is thus of the movable type Form shoulder coupled that when adjusting the form shoulder for example for different geometries of the items to be packed simultaneously and automatically the transport device is adjusted accordingly such that the end of the transport means immediately the shape shoulder ends and no larger gap between the Transport device and the shape shoulder is created.

In Weiterbildung der Erfindung ist ein wirksamer Transportweg der Transportvorrichtung längenverstellbar. Dies besitzt den Vorteil, daß das stromaufseitige Ende der Transporteinrichtung ortsfest, insbesondere anschließend an eine Zuführung für die Gegenstände angeordnet sein kann und gleichzeitig die Position des stromabseitigen Endes der Transporteinrichtung einstellbar ist.In an improvement of the invention is an effective transport route the transport device is adjustable in length. This owns the Advantage that the upstream end of the transport device stationary, especially following a feeder can be arranged for the objects and at the same time the Position of the downstream end of the transport device is adjustable.

Vorzugsweise ist das stromabseitige Ende der Transporteinrichtung an eine gegenüberliegende Kontur der Schlauchformeinrichtung angepaßt, wobei vorzugsweise eine Vorderkante der Schlauchformeinrichtung, über die hinweg die Gegenstände in die Schlauchformeinrichtung geschoben werden, V-förmig ist und sich das stromabseitige Ende der Transporteinrichtung zungenförmig in die V-förmige Aussparung der Schlauchformeinrichtung erstreckt. Um eine Verstellung der Schlauchformeinrichtung zu gestatten, ohne mit der Transporteinrichtung zu kollidieren, ist das stromabseitige Ende der Transporteinrichtung in Transportrichtung derart vor- und zurückfahrbar, daß sich das komplementär V-förmige Ende der Transporteinrichtung zurückbewegt, wenn die V-förmige Öffnung der Schlauchformeinrichtung scherenartig verschmälert wird, um eine geringere Breite des aus der Folie entstehenden Schlauches einzustellen.The downstream end of the transport device is preferably to an opposite contour of the tube forming device adapted, preferably a leading edge of the Hose forming device over which the objects in the tube forming device are pushed, is V-shaped and the downstream end of the transport device tongue-shaped in the V-shaped recess of the hose shaping device extends. To adjust the tube forming device to allow without using the transport device collide is the downstream end of the transport device so forward and backward in the direction of transport, that the complementary V-shaped end of the transport device moved back when the V-shaped opening of the Hose forming device is narrowed to a scissors order a smaller width of the tube emerging from the film adjust.

Vorteilhafterweise besitzt die Transporteinrichtung zumindest ein endloses, um Umlenkmittel umlaufendes Fördermittel, wobei das Fördermittel an dem stromabseitigen Förderende der Transporteinrichtung um eine verschiebliche Umlenkeinheit geführt ist. Insbesondere ist die verschiebliche Umlenkeinheit, über die das Fördermittel S-förmig geführt ist, zwischen zwei festen Umlenkmitteln angeordnet und parallel zu den geraden Abschnitten des Fördermittels zwischen der Umlenkeinheit und den beiden festen Umlenkmitteln hin- und herbeweglich. Das Fördermittel ist ohne eine spezielle Spanneinrichtung wie beispielsweise Spannrollen, fest vorspannbar. Eine Längenverstellung des Förderweges, d.h. eine Verschiebung der Umlenkeinheit kann ohne Längenänderung des Weges, den das Fördermittel zurücklegt, bewirkt werden. Vorteilhafterweise besitzt hierdurch das Fördermittel eine gleichmäßige Spannung, die nicht von Trägheitseffekten wie beispielsweise bei einer Tänzerwalze, die gewöhnlich zur Spannung endloser Bänder verwendet wird, beeinträchtigt wird.The transport device advantageously has at least an endless conveying means rotating around deflecting means, whereby the funding at the downstream end of the Transport device around a movable deflection unit is led. In particular, the displaceable deflection unit, over which the funding is S-shaped, between two fixed deflection means arranged and parallel to the straight sections of the conveyor between the Deflection unit and the two fixed deflection means back and forth movable. The funding is without a special Tensioning device such as tensioning rollers, can be pre-tensioned. A length adjustment of the conveyor path, i.e. a The deflection unit can be moved without changing the length of the Path that the funding travels. As a result, the funding advantageously has one uniform tension, not like inertia effects for example with a dancer roller, which is usually used for Tension of endless belts is used is impaired.

Vorzugsweise besitzt die Transporteinrichtung eine Mehrzahl schmaler, parallel laufender Förderbänder, wobei vorzugsweise die Förderbänder an dem stromabseitigen Ende der Transporteinrichtung um treppenförmig versetzt angeordnete Rollen geführt sind, derart, daß das stromabseitige Ende stufig an die V-förmige Vorderseite der Schlauchformeinrichtung angepaßt ist. Die Rollen können an einem gemeinsamen, verschieblichen Schlitten gelagert und synchron miteinander parallel zur Förderrichtung verschieblich sein.The transport device preferably has a plurality narrow, parallel conveyor belts, preferably the conveyor belts at the downstream end of the transport device around rollers offset in steps are guided, such that the downstream end step adapted the V-shaped front of the tube forming device is. The roles can be on a common, movable Sled mounted and synchronized with each other in parallel be displaceable to the conveying direction.

Vorzugsweise schließt eine Abfördereinrichtung zum Abtransport der in den Schlauch gehüllten Gegenstände an eine Austrittsseite der Schlauchformeinrichtung im wesentlichen bündig mit dieser an. Dies besitzt den Vorteil, daß die Gegenstände unmittelbar am Austritt aus der Schlauchformeinrichtung von der Abfördereinrichtung übernommen werden. Vorzugsweise besitzt die Abfördereinrichtung einen Saugbandförderer, bei dem die in den Schlauch gehüllten Gegenstände an ein Förderband angesaugt werden. Die Ansaugung bewirkt auch den Transport des aus der Schlauchformreinrichtung auslaufenden Schlauches, wenn in diesem keine Gegenstände eingeschlossen sind. Die Ansaugung bewirkt die notwendige Haftung des Schlauches an dem Förderband. Die Abfördereinrichtung könnte auch eine elektrostatische Anziehung der Folie auf das Förderband vorsehen, jedoch besitzt die Ansaugung des ablaufenden Schlauches Vorteile hinsichtlich einer stabilen Haftreibung zwischen Folie und Förderband, insbesondere auch bei unterschiedlichen Folien.A removal device preferably closes for removal the objects wrapped in the hose to a Exit side of the tube forming device essentially flush with this. This has the advantage that the Objects directly at the outlet from the tube forming device be taken over by the removal device. The discharge device preferably has a suction belt conveyor, where the objects wrapped in the tube be sucked into a conveyor belt. The suction causes also the transport of the from the tube molding device leaking hose if there are no objects in it are included. The suction does the necessary Adhesion of the hose to the conveyor belt. The discharge device could also be an electrostatic attraction Provide film on the conveyor belt, but has the suction of the draining hose advantages in terms of stable static friction between film and conveyor belt, in particular even with different foils.

Bei einer Verpackungsmaschine der genannten Art mit verstellbaren Formschultern können unterschiedliche Gegenstände verpackt werden, in dem die Einstellung der Schlauchformeinrichtung verändert wird. Insbesondere bei kleinen Losgrößen, d.h. wenn nur eine kleine Anzahl gleicher Gegenstände zu verpacken ist und die Schlauchformeinrichtung relativ oft verstellt werden muß, ist eine leichte und schnelle Einstellung wichtig.In a packaging machine of the type mentioned with adjustable Shaped shoulders can be different objects be packed in the setting of the tube forming device is changed. Especially with small lot sizes, i.e. if only a small number of identical items too is pack and the tube forming device relatively often must be adjusted is an easy and quick adjustment important.

Gemäß einem weiteren Merkmal der vorliegenden Erfindung wird eine automatisch einstellbare Verpackungsmaschine geschaffen, wobei insbesondere eine Einstellvorrichtung zur Einstellung der Schlauchformeinrichtung für unterschiedliche zu verpakkende Gegenstände und eine Steuereinrichtung zur Steuerung der Einstellvorrichtung in Abhängigkeit von Gegenstandsparamentern wie z.B. Länge, Breite und Höhe etc. des Gegenstandes vorgesehen sind.According to another feature of the present invention created an automatically adjustable packaging machine, in particular an adjustment device for adjustment the tube forming device for different ones to be packaged Objects and a control device for control the adjusting device depending on object parameters such as. Length, width and height etc. of the item are provided.

Es ist also keine manuelle Einstellung der Schlauchformeinrichtung notwendig, sondern diese wird von der Einstellvorrichtung automatisch in Abhängigkeit der Gegenstandsparameter passend für den jeweils zu verpackenden Gegenstand eingestellt. Hierdurch kann die für die Umstellung notwendige Zeit verkürzt und dadurch die Produktivität der Verpackungsmaschine erhöht werden.So it is not a manual adjustment of the tube forming device necessary, but this is from the adjusting device automatically depending on the item parameters suitable for the item to be packed. This can take the time necessary for the changeover shortens the productivity of the packaging machine increase.

Die Gegenstandsparameter können beispielsweise von Hand durch eine entsprechende Eingabeeinheit eingegeben werden. Vorzugsweise jedoch besitzt die Verpackungsmaschine eine Speichereinrichtung zur Speicherung der jeweils einem Gegenstand zugeordneten Gegenstandsparameter, wobei die Steuereinrichtung mittels einer Leseeinheit die entsprechenden Gegenstandsparameter aus der Speichereinrichtung ließt und in Abhängigkeit dieser gespeicherten Parameter die Einstellvorrichtung ansteuert. The object parameters can, for example, by hand a corresponding input unit can be entered. Preferably however, the packaging machine has a storage device for storing one item at a time assigned object parameters, the control device the corresponding object parameters by means of a reading unit reads from the storage device and in Depending on these stored parameters, the setting device controls.

Gemäß einer Ausführung der Erfindung ist eine Eingabeeinheit vorgesehen, mit der der zu verpackende Gegenstand eingegeben werden kann. Entsprechend der Auswahl des zu verpackenden Gegenstandes ließt dann die Steuereinrichtung die diesem Gegenstand zugeordneten Gegenstandsparameter aus der Speichereinrichtung, um die Einstellvorrichtung entsprechend anzusteuern.According to an embodiment of the invention is an input unit provided with which the item to be packaged entered can be. According to the selection of the packaged The control device then reads the object Object parameters associated with the object from the storage device, around the adjusting device accordingly head for.

Um die Schlauchformeinrichtung für einen neuen zu verpackenden Gegenstand einzustellen, ist es also lediglich erforderlich, den entsprechenden Gegenstand einzugeben bzw. auszuwählen. Die Schlauchformeinrichtung wird dann ganz automatisch in die hierfür notwendige Einstellung gebracht.To pack the tube forming device for a new one To set an object, it is only necessary enter or select the appropriate item. The tube forming device is then completely automatic brought into the necessary setting for this.

Anstelle der Eingabeeinheit könnte auch eine Erfassungvorrichtung vorgesehen sein, mit Hilfe derer der jeweils zu verpackende Gegenstand automatisch erfaßt wird. Entsprechend dem Ergebnis der automatischen Erfassung werden dann die jeweiligen Gegenstandsparameter aus dem Speicher gelesen, um die Einstellvorrichtung anzusteuern. Der Erfassungsvorrichtung kann eine Auswerteeinheit nachgeschaltet sein, um auszuwerten, welchem abgespeicherten Gegenstand der erfaßte Gegenstand entspricht bzw. am nächsten kommt.Instead of the input unit, a detection device could also be used be provided, with the help of which each packaging object is automatically detected. Corresponding the result of the automatic detection will then be the respective item parameters read from memory in order to to control the setting device. The detection device can be connected to an evaluation unit evaluate which stored object the captured Item corresponds or comes closest.

Die zuvor beschriebene Ausführung mit einer manuellen Eingabe des zu verpackenden Gegenstandes besitzt jedoch Vorteile hinsichtlich eines einfachen Aufbaus und der Zuverlässigkeit der Eingabe.The previously described version with manual input however, the item to be packaged has advantages in terms of simple structure and reliability the input.

Die Einstellvorrichtung kann mehrere Stellmotoren aufweisen, die jeweils unterschiedlichen Bewegungsachsen der Schlauchformeinrichtung zugeordnet sind und von der Steuereinrichtung angesteuert sind. Vorzugsweise sind sowohl den translatorischen Verschiebeachsen als auch den Winkelverstellachsen der Schlauchformeinrichtung jeweils Stellmotoren zugeordnet. The adjusting device can have several servomotors, the respective different axes of movement of the tube forming device are assigned and by the control device are controlled. Both translational are preferred Sliding axes as well as the angle adjustment axes the hose shaping device each assigned actuators.

Als Stellmotoren können dabei Schrittmotoren verwendet werden, wobei eine indirekte Wegmessung durch zählen der Schrittimpulse vorgesehen ist. Es können auch Servomotoren vorgesehen sein, wobei eine direkte Wegmessung durch Impulsgeber und eine Auswertung in einer geeigneten Steuerung vorgesehen sein kann.Stepper motors can be used as servomotors be an indirect distance measurement by counting the Step pulses are provided. Servomotors can also be used be provided, with a direct path measurement by pulse generator and an evaluation in a suitable controller can be provided.

Vorzugsweise ist die Einstellvorrichtung mit der Transporteinrichtung gekoppelt. Die Transporteinrichtung wird also ebenfalls automatisch an den jeweils zu verpackenden Gegenstand und die entsprechende Einstellung der Schlauchformeinrichtung angepaßt. Ferner können durch die Steuereinrichtung auch nachgeschaltete Aggregate wie beispielsweise eine Folienschweißvorrichtung angesteuert werden. Durch Eingabe bzw. Erfassung des zu verpackenden Gegenstandes wird also eine vollständig automatische Einstellung der Verpackungsmaschine bewirkt.The adjusting device with the transport device is preferably coupled. The transport device is therefore also automatically to the item to be packed and the corresponding setting of the tube forming device customized. Furthermore, by the control device also downstream units such as one Foil sealing device can be controlled. By input or detection of the item to be packaged a fully automatic adjustment of the packaging machine causes.

Besonders vorteilhaft kann durch die beschriebene Steuereinrichtung auch das Einrichten der Schlauchformeinrichtung auf gänzlich neue zu verpackende Gegenstände vereinfacht werden, indem zunächst der dem neuen Gegenstand am nächsten kommende bekannte Gegenstand ausgewählt wird. Die Steuereinrichtung bewirkt dann zunächst eine Voreinstellung gemäß den für den bekannten Gegenstand abgespeicherten Parametern. Eine Feineinstellung kann dann beispielsweise nach einem Probelauf erfolgen. Hierfür ist vorzugsweise eine Parametereingabeeinheit vorgesehen.The control device described can be particularly advantageous also set up the tube forming device completely new items to be packaged are simplified, by first of all coming closest to the new object known item is selected. The control device then causes a presetting according to the for known subject stored parameters. A fine adjustment can then, for example, after a test run respectively. There is preferably a parameter input unit for this intended.

Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. These and other features go beyond the claims also from the description and the drawings, wherein the individual features individually or separately several advantageous in the form of sub-combinations as well can represent protectable versions for which protection is claimed here.

Nachfolgend wird die vorliegende Erfindung anhand eines Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. In diesen zeigen:

Fig. 1
eine perspektivische Ansicht, die schematisch einen Ausschnitt einer Verpackungsmaschine mit einer Transporteinrichtung, auf der ein Gegenstand transportiert wird, eine Schlauchformeinrichtung mit Formschultern, über die eine Folie läuft, und eine Abfördereinrichtung auf dem stromabseitigen Ende der Schlauchformeinrichtung zeigt,
Fig. 2
eine Draufsicht auf ein stromabseitiges Ende der Transporteinrichtung mit mehreren schmalen, parallel laufenden Förderbändern und einer V-förmigen Vorderseite der Schlauchformeinrichtung, die durch zwei scherenartig angeordnete Formbleche gebildet wird,
Fig. 3
eine schematische Darstellung der Förderbandführung und der Anordnung der Umlenkrollen der Transporteinrichtung gemäß den vorhergehenden Figuren,
Fig. 4
eine perspektivische Ansicht der Formschultern der Schlauchformeinrichtung, die schematisch die Anordnung einzelner Formkanten zueinander und deren Beweglichkeit sowie die Führung der über die einzelnen Formkanten gezogenen Folie zeigt,
Fig. 5
eine Draufsicht auf die Schlauchformeinrichtung gemäß der Ausführung der vorhergehenden Figuren, die ähnlich Fig. 4 schematisch die Anordnung der Formschultern zueinander zeigt, und
Fig. 6
eine Seitenansicht, die die Verstellbarkeit einer oberen Formschulter der Schlauchformeinrichtung und die Anordnung der Transporteinrichtung, einer unteren Formschulter und eines Abförderers in einer Ebene zeigt.
The present invention is explained in more detail below on the basis of an exemplary embodiment and associated drawings. In these show:
Fig. 1
1 shows a perspective view which schematically shows a section of a packaging machine with a transport device on which an object is transported, a tube forming device with shaped shoulders over which a film runs, and a discharge device on the downstream end of the tube forming device,
Fig. 2
2 shows a plan view of a downstream end of the transport device with a plurality of narrow, parallel conveyor belts and a V-shaped front side of the tube-forming device, which is formed by two shear-like shaped sheets,
Fig. 3
1 shows a schematic illustration of the conveyor belt guide and the arrangement of the deflection rollers of the transport device according to the previous figures,
Fig. 4
2 shows a perspective view of the shaped shoulders of the tube forming device, which schematically shows the arrangement of individual shaped edges with respect to one another and their mobility and the guidance of the film drawn over the individual shaped edges,
Fig. 5
a plan view of the tube forming device according to the embodiment of the preceding figures, which schematically shows the arrangement of the shaped shoulders to each other similar to FIG. 4, and
Fig. 6
a side view showing the adjustability of an upper shape shoulder of the tube forming device and the arrangement of the transport device, a lower shape shoulder and a conveyor in one plane.

Die Verpackungsmaschine besitzt eine Schlauchformeinrichtung 1, eine Transporteinrichtung 2, mit der zu verpackende Gegenstände 4 durch die Schlauchformeinrichtung 1 hindurch in einen aus Folie 5 geformten Schlauch 6 transportiert werden, und eine Abfördereinrichtung 3, die den aus der Schlauchformeinrichtung 1 austretenden Schlauch 6 und die darin angeordneten Gegenstände 4 von der Schlauchformeinrichtung 1 abtransportiert (Fig. 1).The packaging machine has a tube forming device 1, a transport device 2, with which to be packed Objects 4 through the tube forming device 1 in a tube 6 formed from film 5 can be transported, and a discharge device 3, which from the tube forming device 1 emerging hose 6 and the arranged therein Objects 4 transported away from the tube forming device 1 (Fig. 1).

Die Schlauchformeinrichtung 1 weist eine obere, erste Formschulter 7 und eine untere, zweite Formschulter 8 auf (Fig. 4), über die die Folie 5, die von einer Vorratsrolle 9 über eine Ausgleichsrolle 10 abgenommen wird, nacheinander geführt wird, um als Schlauch 6 aus der Schlauchformeinrichtung 1 auszutreten. Der Schlauch 6 besitzt im wesentlichen einen rechteckigen Querschnitt, wobei sich am Boden des Schlauches 6 die Ränder 11 der Folie 5 überlappen.The tube molding device 1 has an upper, first shape shoulder 7 and a lower, second form shoulder 8 on (Fig. 4), over which the film 5, from a supply roll 9 over a compensating roller 10 is removed, performed in succession is used as the hose 6 from the hose shaping device 1 to resign. The hose 6 essentially has one rectangular cross-section, being at the bottom of the hose 6 overlap the edges 11 of the film 5.

Die beiden Formschultern 7 und 8 spannen im wesentlichen zwei Ebenen auf, die zueinander geneigt sind und sich in etwa in der von der Transporteinrichtung 2 definierten Transportebene schneiden. Die untere, zweite Formschulter 8 liegt im wesentlichen in der Förderebene der Transporteinrichtung 2, während die obere, erste Formschulter 7 in der Förderrichtung 13 ansteigend verläuft derart, daß die Folie 5, die über die obere Formschulter 7 gezogen wird, gemäß Fig. 4 von rechts oben nach links unten zugeführt wird.The two form shoulders 7 and 8 essentially span two Levels that are inclined to each other and approximately in the transport level defined by the transport device 2 to cut. The lower, second shape shoulder 8 is essentially in the conveying plane of the transport device 2 while the upper, first shape shoulder 7 in the conveying direction 13 increasing so that the film 5, which over the upper form shoulder 7 is pulled, as shown in FIG. 4 from the right is fed up to the bottom left.

Die Formschultern 7 und 8 besitzen mehrere Paare von Formkanten, über die die Folie 5 geführt und abgeknickt wird, um zu dem Schlauch 6 geformt zu werden. Die obere Formschulter 7 besitzt an ihren Außenseiten ein erstes Formkantenpaar 12, über die die äußeren Randbereiche der Folie 5 nahe deren Ränder 11 zunächst geführt wird, bevor diese die untere Formschulter 8 erreichen. Die ersten Formkanten 12 liegen in einer gemeinsamen Ebene, nämlich in der Ebene der Formschulter 7 und konvergieren in Richtung der über die erste Formschulter 7 gezogenen Folie 5. Die Verlängerungen der Formkanten 12 schneiden sich dabei unter einem Konvergenzwinkel u (Fig. 5). Wie in Fig. 1 gezeigt ist, weist die erste Formschulter 7 zwei Leitbleche 14 auf, die jeweils eine der Formkanten 12 besitzen und beweglich sind, wie später noch näher beschrieben werden wird, um die Führung und Spannung der Folie 5 und die Geometrie des austretenden Folienschlauches 6 einstellen zu können. Die Leitbleche 14 sind Metallbleche.The shape shoulders 7 and 8 have several pairs of shape edges, over which the film 5 is guided and kinked to the tube 6 to be molded. The upper shape shoulder 7 has a first pair of molded edges 12 on its outer sides, over which the outer edge regions of the film 5 close to them Edges 11 is first performed before this the lower Reach shape shoulder 8. The first shape edges 12 are in a common level, namely the level of the form shoulder 7 and converge in the direction of the first shape shoulder 7 drawn film 5. The extensions of the mold edges 12 intersect at a convergence angle u (Fig. 5). As shown in Fig. 1, the first shape shoulder 7 two baffles 14, each one of the Have shaped edges 12 and are movable, as later will be described in more detail about leadership and tension the film 5 and the geometry of the exiting film tube 6 to be able to adjust. The baffles 14 are Metal sheets.

Die untere, zweite Formschulter 8 besitzt ebenfalls zwei Leitbleche 15 und 16, die jedoch nicht wie die Leitbleche 14 in einer Ebene liegen, sondern in zwei parallelen Ebenen angeordnet sind und sich gegenseitig überlappen, wobei zwischen den beiden Leitblechen 15 und 16 ein schmaler gemäß der Orientierung nach Fig. 1 horizontaler Spalt ist, durch den die Folie 5 geführt werden kann, wie nachfolgend noch erläutert werden wird.The lower, second shape shoulder 8 also has two Baffles 15 and 16, but not like the baffles 14 lie in one plane, but in two parallel planes are arranged and overlap each other, wherein between the two baffles 15 and 16 according to a narrower 1 is a horizontal gap, by which the film 5 can be guided, as below will be explained.

Die beiden Leitbleche 15 und 16 sind im wesentlichen dreieckförmig und besitzen zusammen ein zweites Formkantenpaar 17, die an den Außenseiten der Formschulter 8 angeordnet sind, und ein drittes Formkantenpaar 18, die einander überlappen und eine V-förmige Öffnung an der Vorderseite der Formschulter 8 begrenzen. Wie in Fig. 5 gezeigt ist, divergieren die zweiten Formkanten 17 in Richtung des aus der Schlauchformeinrichtung 1 austretenden Schlauches 6. Verlängerungen der zweiten Formkanten 17 schneiden sich unter einem Konvergenzwinkel v. Die dritten Formkanten 18 konvergieren in Richtung des austretenden Schlauches 6 und begrenzen in der Projektion auf die Förderebene der Transporteinrichtung 2 einen Winkel w.The two guide plates 15 and 16 are essentially triangular and together have a second pair of mold edges 17, which are arranged on the outer sides of the shaped shoulder 8, and a third pair of mold edges 18 that overlap each other and a V-shaped opening at the front of the shape shoulder 8 limit. As shown in Fig. 5, the diverge second mold edges 17 in the direction of from the tube molding device 1 emerging hose 6. Extensions of the second mold edges 17 intersect at a convergence angle v. The third shape edges 18 converge in the direction of the exiting hose 6 and limit in the projection an angle to the conveying plane of the transport device 2 w.

Ein viertes Formkantenpaar 19, über das die Folie 5 geführt wird, liegt an einer Vorderseite der oberen Formschulter 7 und liegt auf einer gemeinsamen Geraden.A fourth pair of mold edges 19 over which the film 5 is guided is located on a front side of the upper shape shoulder 7 and lies on a common straight line.

Die Anordnung der Formkanten zueinander ist dabei derart, daß der Weg über die verschiedenen Formkanten 12, 17, 18 und 19 entlang verschiedener Linien, die zu den Rändern 11 der Folie 5 jeweils parallel sind, gemessen von einem Eintritt der Folie 5 in die Schlauchformeinrichtung 1 an einer Eintrittskante 20 bis zu dem Austritt der Folie 5 an einem senkrechten Querschnitt des Schlauches 6 an Hinterkanten 21 der unteren Formschulter 8 unterschiedlich lang ist. Insbesondere ist der vorbeschriebene Weg in Bereichen nahe den Rändern 11 der Folie 5 kürzer als in Bereichen zu der Längsmittelachse der Folie 5 hin. Dies führt, wie später noch näher beschrieben werden wird, dazu, daß die Ränder 11 locker und ungespannt über die Formkanten laufen und insbesondere im Bereich zwischen den ersten Formkanten 12 und den zweiten Formkanten 17 einen Bauch bilden (Fig. 4).The arrangement of the mold edges to one another is such that the path over the different shape edges 12, 17, 18 and 19 along different lines leading to the edges 11 of the slide 5 are each parallel, measured from an entry of the Film 5 in the tube forming device 1 at an entry edge 20 until the exit of the film 5 on a vertical Cross section of the hose 6 at the rear edges 21 of the lower Form shoulder 8 is of different lengths. In particular, the prescribed path in areas near the edges 11 of the Slide 5 shorter than in areas to the longitudinal central axis of the Slide 5 down. This leads, as will be described in more detail later will, that the edges 11 loose and untensioned run over the form edges and especially in the area between the first mold edges 12 and the second mold edges 17 form a belly (Fig. 4).

Wie in Fig. 5 gezeigt ist, sind die jeweils von der Folie 5 nacheinander überlaufene erste Formkante 12 und zweite Formkante 17, d.h. gemäß Fig. 5 je eine rechte der ersten und zweiten Formkanten und jeweils eine linke der ersten und zweiten Formkanten, nicht in einer gemeinsamen Ebene angeordnet, sondern sind jeweils zueinander windschief. Die Folie 5 wird dadurch im Bereich zwischen den ersten Formkanten 12 und den zweiten Formkanten 17 verschränkt. In Abhängigkeit des Neigungswinkels z der ersten Formschulter 7 sind eine Vielzahl von Winkelkombinationen der Winkel u, v und w möglich, um zum einen die Spannungsfreiheit der Ränder 11 und zum anderen die Verschränkung der Folie 5 im Bereich zwischen zwei zusammengehörigen Formkanten 12 und 17 zu erreichen. Bei einem Winkel z von 45° können die Winkel u, v und w beispielsweise 70, 20 und 90° betragen. Projeziert man den in der Ebene der ersten Formschulter 7 liegenden Winkel u in die Ebene des in der Förderebene liegenden Winkels v, ist die Projektion des Winkels u stets größer als der Winkel v.As shown in FIG. 5, they are each of the film 5 successively overflowed first mold edge 12 and second Form edge 17, i.e. 5 a right one of the first and second mold edges and a left one of the first and second mold edges, not arranged in a common plane, but are skewed towards each other. The slide 5 is thereby in the area between the first mold edges 12 and the second mold edges 17 crossed. Depending on the The inclination angle z of the first shape shoulder 7 is a large number possible combinations of angles of angles u, v and w, to the one hand the absence of tension of the edges 11 and others the entanglement of the film 5 in the area between to achieve two associated shape edges 12 and 17. At an angle z of 45 ° can be the angles u, v and w, for example 70, 20 and 90 °. If you project that in the plane of the first shape shoulder 7 lying angle u in is the plane of the angle v in the conveying plane the projection of the angle u is always greater than the angle v.

Um die Geometrie des aus der Schlauchformeinrichtung 1 austretenden Schlauches 6 und die Spannungsverteilung bei der Führung der Folie 5 über die einzelnen Formkanten einstellen zu können, sind die Formkanten 12, 17 und 18 um und entlang verschiedener Achsen beweglich. Um eine Höhe des Schlauches 6 einstellen zu können, ist die erste Formschulter 7 entlang einer Achse a parallel zu einer Verbindungsgeraden der Vorderkante 19 der ersten Formschulter 7 und einer Vorderkante 210 der zweiten Formschulter 8 verschieblich (Fig. 6). Ein Träger 22, der mit beiden Leitblechen 14 der ersten Formschulter 7 verbunden ist, ist entlang der Achse a verschieblich an einem Ständer 23 gelagert und über einen Arm 24 mit einer Spindel 25 zur Höhenverstellung der ersten Formschulter 7 in Eingriff. Ein sich mit der Formschulter mitbewegendes Handrad kann hierdurch entfallen. Die Spindel 25 kann von Hand, vorzugsweise mittels eines Stellmotors 50 angetrieben werden.To determine the geometry of the tube forming device 1 emerging hose 6 and the voltage distribution at the Adjust the guidance of the film 5 over the individual mold edges To be able to, the shape edges 12, 17 and 18 are around and along different axes movable. By a height of the hose 6 To be able to adjust, is along the first shape shoulder 7 an axis a parallel to a straight line connecting the Front edge 19 of the first shape shoulder 7 and a front edge 210 of the second shape shoulder 8 slidably (Fig. 6). A Carrier 22 with the two guide plates 14 of the first shape shoulder 7 is connected, is displaceable along the axis a mounted on a stand 23 and with an arm 24 with a spindle 25 for height adjustment of the first shape shoulder 7 engaged. A moving with the shape shoulder This eliminates the need for a handwheel. The spindle 25 can of Hand, preferably driven by means of an actuator 50 become.

Der Träger 22 und der Ständer 23 sind zweiteilig ausgeführt und mit jeweils einem der Leitbleche 14 verbunden, um die Leitbleche 14 entlang einer Achse b quer zur Förderrichtung der Transporteinrichtung 2 und hierdurch eine Breite des ablaufenden Schlauches 6 einstellen zu können. Die Verstellung der Leitbleche 14 der oberen Formschulter 7 erfolgt dabei vorzugsweise synchron mit einer entsprechenden Breiteneinstellung der Leitbleche 15 und 16 der unteren Formschulter 8 ebenfalls entlang einer Richtung b. Die beiden Ständer 23 können dabei jeweils fest mit einem der Leitbleche 15 bzw. 16 verbunden sein oder sie können mit den beiden Leitblechen 15 und 16 an eine gemeinsame Einstellspindel 26 gekoppelt sein. Wie in Fig. 2 gezeigt ist, sind die beiden Leitbleche 15 und 16 jeweils mittels einer Spindelmutter 27 bzw. 28 mit verschieden gängigen Abschnitten der Einstellspindel 26 in Eingriff, so daß mit Betätigen der Spindel 26 die Breite der von den dritten Formkanten 18 begrenzten V-förmigen Öffnung der unteren Formschulter 8 eingestellt wird. Anstelle des dargestellten Spindelantriebes sind auch andere Antriebsbzw. Einstellvorrichtungen verwendbar, jedoch besitzt der gezeigte Spindeltrieb bei einfacher Bauweise eine hohe Präzision. Die Spindel 26 kann von Hand vorzugsweise mittels eines geeigneten Stellmotors 51 angetrieben werden. Durch synchrones Verstellen der Leitbleche 14 der oberen Formschulter 7 und der Leitbleche 15 und 16 der unteren Formschulter 8 ist die Spurbreite der Schlauchformeinrichtung 1 und damit die Breite des ablaufenden Schlauches 6 einfach bei gleichbleibenden geometrischen Verhältnissen der Formkanten zueinander einstellbar.The carrier 22 and the stand 23 are made in two parts and connected to each of the baffles 14 to the Baffles 14 along an axis b transverse to the conveying direction the transport device 2 and thereby a width of the running hose 6 to be able to adjust. The adjustment the guide plates 14 of the upper shape shoulder 7 takes place preferably in synchronization with a corresponding width setting the guide plates 15 and 16 of the lower form shoulder 8 also along a direction b. The two stands 23 can be fixed with one of the guide plates 15 or 16 be connected or they can with the two baffles 15th and 16 can be coupled to a common setting spindle 26. As shown in Fig. 2, the two baffles 15 and 16 each with a spindle nut 27 or 28 with different common sections of the adjusting spindle 26 in Engagement, so that with actuation of the spindle 26, the width of the V-shaped opening bounded by the third mold edges 18 the lower shape shoulder 8 is set. Instead of shown spindle drive are other drive or. Adjustment devices can be used, but the shown spindle drive with a simple design a high Precision. The spindle 26 can preferably by hand a suitable servomotor 51 are driven. By synchronous adjustment of the guide plates 14 of the upper shape shoulder 7 and the guide plates 15 and 16 of the lower mold shoulder 8 is the track width of the tube forming device 1 and thus the width of the running hose 6 simply with the same geometrical relationships of the shape edges to each other adjustable.

Um die Spannung der Folie 5 an den Rändern 11 einstellen zu können, sind die Leitbleche 14 der oberen Formschulter 7 um jeweils eine Achse c schwenkbar, die senkrecht zu der von den Leitblechen 14 definierten Ebene ist. Wie in Fig. 4 und 6 gezeigt ist, liegen die Achsen c jeweils an einem unteren äußeren Ende der Leitbleche 14. Die Lage der Verbindungspunkte der ersten Formkante 12 und der vierten Formkante 19 ist dabei die gleiche für unterschiedliche Schwenkstellungen der Leitbleche 14, derart, daß die gedachte Verbindung zwischen dem vierten Formkantenpaar 19 und den Spitzen, d.h. den Verbindungspunkten der zweiten und dritten Formkanten, unverändert bleibt. Durch Verschwenken der Leitbleche 14 wird der Konvergenzwinkel u verändert. Der Verstellbereich ist dabei derart, daß der Konvergenzwinkel u bzw. dessen Projektion in die Ebene des Winkels v stets größer ist als der Winkel v. Hierdurch wird eine Verschränkung der Folie 5 im Bereich zwischen den ersten Formkanten 12 und den zweiten Formkanten 17 erreicht.To adjust the tension of the film 5 at the edges 11 can, the baffles 14 of the upper shape shoulder 7 to each an axis c pivotable, which is perpendicular to that of the Baffles 14 is defined level. As in Figs. 4 and 6 is shown, the axes c are each at a lower outer end of the baffles 14. The location of the connection points the first mold edge 12 and the fourth mold edge 19 doing the same for different swivel positions Baffles 14, such that the imaginary connection between the fourth pair of mold edges 19 and the tips, i.e. the Connecting points of the second and third form edges, remains unchanged. By pivoting the baffles 14 the angle of convergence u changes. The adjustment range is thereby such that the convergence angle u or its projection in the plane of the angle v is always greater than that Angle v. This will entangle the film 5 in Area between the first mold edges 12 and the second Form edges 17 reached.

Wie in Fig. 6 gezeigt ist, sind die Leitbleche 14 jeweils auf einem plattenförmigen Grundträger 29 schwenkbar gelagert. Um ein synchrones Verstellen der beiden Leitbleche 14 zu erreichen, können diese beispielsweise über eine Spindel miteinander gekoppelt sein, ähnlich den beiden Leitblechen 15 und 16. Hierfür kann ebenfalls ein nicht gezeigter Stellmotor vorgesehen sein. Es ist jedoch ebenfalls möglich, die beiden Leitbleche 14 einzeln schwenkbar auszuführen, um unterschiedliche Einstellungen an den beiden Formkanten 12 zu erreichen.As shown in Fig. 6, the baffles 14 are each on a plate-shaped base support 29 pivotally mounted. Around to achieve a synchronous adjustment of the two guide plates 14, can, for example, with one another via a spindle be coupled, similar to the two guide plates 15 and 16. A servomotor, not shown, can also be provided for this be. However, it is also possible to use the two Baffles 14 individually pivotable to different To achieve settings on the two mold edges 12.

Wie in Fig. 6 gezeigt ist, werden die vierten Formkanten 19 von zylindrischen Rollen 30 gebildet, die an dem Grundträger 29 drehbar gelagert sind. Die Rollen 30 reduzieren die Beanspruchung der Folie 5 durch die relativ spitzwinklige Umlenkung an der Formkante 4 und verringern die Reibung der Folie 5 an dieser Formkante.As shown in FIG. 6, the fourth mold edges 19 formed by cylindrical rollers 30 attached to the base support 29 are rotatably mounted. The rollers 30 reduce that Strain on the film 5 due to the relatively acute angle Deflection on the mold edge 4 and reduce the friction of the Slide 5 on this form edge.

Durch Einstellung des Konvergenzwinkels u läßt sich die Spannung der Folie 15, wie später noch näher beschrieben werden wird, in den Bereichen der Ränder 11 und die Bauchigkeit der Folie zwischen den ersten Formkanten 12 und den zweiten Formkanten 17 einstellen. By setting the convergence angle u, the Tension the film 15, as described in more detail later will be in the areas of the edges 11 and the bulky the film between the first mold edges 12 and set the second mold edges 17.

Um die Gegenstände 4 in den von den beiden Formschultern 7 und 8 aufgespannten Schlauch 6 zu transportieren, besitzt die Transporteinrichtung 2, wie in Fig. 1 gezeigt ist, eine Mehrzahl schmaler, parallel laufender Förderbänder 31, die die Gegenstände 4 auf die untere Formschulter 8 bzw. die über die untere Formschulter 8 gezogene Folie 5 zu schieben. Am stromabseitigen Ende des Obertrums der Transporteinrichtung 2 sind die Förderbänder 31 um treppenförmig versetzt angeordnete Rollen 32, 33, 34 und 35 geführt derart, daß die Enden der einzelnen Förderbänder 31 V-förmig abgestuft sind und der von den dritten Formkanten 18 begrenzten V-förmigen Öffnung der unteren Formschulter 7 angepaßt sind. Hierdurch reicht der Förderweg der Transporteinrichtung 2 unmittelbar bis an die untere Formschulter 8, die mit der Förderebene der Transportrichtung 2 in der gleichen Ebene liegt. Um eine Breiteneinstellung der Leitbleche 15 und 16 quer zur Transportrichtung bei einem gleichbleibend geringem Spalt zwischen der Transporteinrichtung 2 und der V-förmigen Vorderseite der unteren Formschulter 8 zu erreichen, ist das komplementär abgestufte stromabseitige Förderende der Transporteinrichtung 2 vor- und zurückschiebbar derart, daß der Förderweg der Transporteinrichtung 2 längenverstellbar ist.To the objects 4 in the of the two shoulders 7 and 8 stretched hose 6 has the Transport device 2, as shown in Fig. 1, a A plurality of narrow, parallel conveyor belts 31, the the objects 4 on the lower form shoulder 8 or over to slide the lower mold shoulder 8 drawn film 5. At the downstream end of the upper run of the transport device 2 the conveyor belts 31 are arranged offset by steps Rollers 32, 33, 34 and 35 guided such that the ends of the individual conveyor belts 31 are V-shaped and of the third mold edges 18 limited V-shaped opening of the lower shape shoulder 7 are adapted. This is enough Transport path of the transport device 2 directly to the lower shape shoulder 8, which corresponds to the conveying plane of the transport direction 2 lies on the same level. To set a width the baffles 15 and 16 transverse to the direction of transport with a constant small gap between the transport device 2 and the V-shaped front of the lower one Achieving shape shoulder 8 is the complementarily graded downstream end of the conveyor 2 forward and retractable in such a way that the conveying path of the transport device 2 is adjustable in length.

Die Rollen 32, 33, 34 und 35, die das stromabseitige Ende festlegen, sind an einem gemeinsamen Schlitten 36 gelagert, der in Förderrichtung mittels Gleit- bzw. Wälzlager 37 verschieblich an einem nicht näher dargestellten Rahmen der Verpackungsmaschine gelagert ist. Wird die Breite der unteren Formschulter 8 verringert, d.h. werden die Leitbleche 14 und 15 zusammengeschoben bzw. weiter übereinander geschoben, wird der Schlitten 36 entgegen der Förderrichtung der Transporteinrichtung 2 zurückgeschoben, so daß das stromabseitige Ende der Transporteinrichtung nicht mit den dritten Formkanten 18 kollidiert. Bei einer Verbreiterung der unteren Formschulter 8, d.h. bei einem Auseinanderschieben der beiden Leitbleche 15 und 16 quer zur Förderrichtung, wird das stromabseitige Ende in Förderrichtung nach vorne geschoben, um keinen Spalt zwischen der Transporteinrichtung 2 und der unteren Formschulter 8 entstehen zu lassen.The rollers 32, 33, 34 and 35, which are the downstream end set, are mounted on a common carriage 36, the in the conveying direction by means of plain or roller bearings 37 moveable on a frame of the Packaging machine is stored. Will the width of the bottom Shape shoulder 8 reduced, i.e. the baffles 14 and 15 pushed together or pushed one over the other the carriage 36 against the conveying direction of the transport device 2 pushed back so that the downstream end the transport device not with the third mold edges 18 collided. When the lower form shoulder widens 8, i.e. when the two guide plates are pushed apart 15 and 16 transversely to the conveying direction, the downstream End pushed forward in the conveying direction, no gap between the transport device 2 and the lower form shoulder 8 to be created.

Der Schlitten 36 ist vorzugsweise synchron zur Breiteneinstellung der unteren Formschulter 8 verschieblich. Eine Schlittenspindel 38, mit der der Schlitten über einen Arm 39 und eine Spindelmutter 40 in Eingriff ist, ist mittels eines Kegelradpaares 41 an die Einstellspindel 26, mit der die Stellung der Leitbleche 14 und der Leitbleche 15 und 16 quer zur Förderrichtung eingestellt wird, gekoppelt. Die Synchronschaltung des Schlittens 36 mit den Formblechen 15 und 16 kann auch mittels entsprechend angesteuerter Stellmotoren einzeln erfolgen, jedoch besitzt die gezeigte Kopplung zweier Spindelantriebe bei einfacher Bauweise eine hohe Präzision. Die Einstellspindel 26 und die Schlittenspindel 38 können gemeinsam von Hand oder mit einem geeigneten Stellmotor angetrieben werden.The carriage 36 is preferably in synchronism with the width adjustment the lower form shoulder 8 slidably. A Slide spindle 38 with which the slide over an arm 39 and a spindle nut 40 is engaged by means of a Bevel gear pair 41 to the adjusting spindle 26 with which the Position of the guide plates 14 and the guide plates 15 and 16 transversely is set to the direction of conveyance. The synchronous circuit of the slide 36 with the shaped plates 15 and 16 can also be done using appropriately controlled actuators done individually, but the coupling shown has two Spindle drives with a simple design a high precision. The adjustment spindle 26 and the slide spindle 38 can together by hand or with a suitable servomotor are driven.

Wie in Fig. 3 gezeigt ist, werden die einzelnen Förderbänder 31 derart geführt, daß die von den endlos umlaufenden Förderbändern 31 zurückgelegten Wegstrecken für unterschiedliche Einstellungen des stromabseitigen Förderendes des Obertrums der Transporteinrichtung 2 gleich sind. Die einzelnen Förderbänder 31 werden zunächst einzeln oder paarweise um die verschieblich gelagerten Umlenkrollen 32, 33, 34 und 35 geführt und daraufhin zusammen um eine gemeinsame Umlenkrolle 41, die ebenfalls an dem verschieblichen Schlitten 36 drehbar gelagert ist und zusammen mit den Umlenkrollen 32, 33, 34 und 35 in einer Richtung parallel zur Förderrichtung verschieblich ist. Die Förderbänder 31 werden also jeweils S-förmig um eine der Umlenkrollen 32, 33, 34 und 35 und die Umlenkrolle 41 geführt. Die an dem Schlitten 36 gelagerten Umlenkrollen 32 bis 35 und 41 sind zwischen zwei feststehenden drehbar gelagerten Umlenkrollen 42 und 43 angeordnet, um die jedes der Förderbänder 31 geführt ist. Der Abschnitt der Förderbänder 31 zwischen der Umlenkrolle 43 und den Umlenkrollen 32 bis 35 und der Abschnitt der Förderbänder 31 zwischen der Umlenkrolle 41 und der Umlenkrolle 42 verlaufen in zueinander parallelen Ebenen. Die verschiebliche Umlenkeinheit mit den Umlenkrollen 32 bis 35 und 41 kann parallel zu diesen Ebenen in Förderrichtung vor- und zurückbewegt werden, um die Position des stromabseitigen Förderendes der Transporteinrichtung 2 einzustellen, wobei die von den Förderbändern 31 zurückgelegte Wegstrecke konstant ist. Die Förderbänder 31 können deshalb mit einer vorbestimmten und gleichbleibenden Spannung beaufschlagt werden.As shown in Fig. 3, the individual conveyor belts 31 guided such that the endlessly rotating conveyor belts 31 covered distances for different Settings of the downstream end of the upper run the transport device 2 are the same. The individual conveyor belts 31 are first individually or in pairs around the slidably mounted pulleys 32, 33, 34 and 35 led and then together around a common pulley 41, which is also rotatable on the sliding carriage 36 is stored and together with the guide rollers 32, 33, 34 and 35 displaceable in a direction parallel to the conveying direction is. The conveyor belts 31 are each S-shaped one of the deflection rollers 32, 33, 34 and 35 and the deflection roller 41 out. The deflection rollers mounted on the slide 36 32 to 35 and 41 are rotatable between two fixed mounted deflection rollers 42 and 43 arranged around each the conveyor belts 31 is guided. The section of the conveyor belts 31 between the deflection roller 43 and the deflection rollers 32 to 35 and the section of the conveyor belts 31 between the Deflection roller 41 and the deflection roller 42 run in each other parallel planes. The movable deflection unit with the Deflection rollers 32 to 35 and 41 can be parallel to these planes be moved back and forth in the conveying direction to the Position of the downstream end of the conveyor 2 to be set, whereby the conveyor belts 31 distance traveled is constant. The conveyor belts 31 can therefore with a predetermined and constant Voltage are applied.

Zum Abtransport der Gegenstände 4 auf der Schlauchaustrittsseite der Schlauchformeinrichtung 1 ist eine Abfördereinrichtung 3 vorgesehen. Die Abfördereinrichtung 3 weist ein mit Luftsauglöchern 44 perforiertes Saugförderband 45 auf, das endlos umläuft und dessen Oberseite in der Ebene der zweiten, unteren Formschulter 8 liegt. Das stromaufseitige Förderende des Abförderers 3 schließt bündig an eine Hinterkante der zweiten, unteren Formschulter 8 an und übernimmt die in den Schlauch geschobenen Gegenstände 4 sowie den Folienschlauch 6 selbst stromabwärts der Schlauchformeinrichtung 1. Im Bereich der Schlauchformeinrichtung 1 selbst, d.h. im Bereich der unteren Formschulter 8, ist also keine Fördereinrichtung vorgesehen. Der Transport der Gegenstände 4 in diesem Bereich erfolgt mittelbar durch die Folie 5, die über die Leitbleche 15 und 16 der zweiten, unteren Formschulter 8 gezogen wird. Der Saugförderer 3 wirkt gleichzeitig als Abziehvorrichtung für die Folie 5 und kann auch bei Abwesenheit von zu verpakkenden Gegenständen 4 die Folie 5 durch die Schlauchformeinrichtung 1 ziehen. Insbesondere das Einfädeln der Folie 5 in die Schlauchformeinrichtung 1 wird hierdurch erleichtert. For the removal of objects 4 on the hose outlet side the tube forming device 1 is a discharge device 3 provided. The discharge device 3 has one Air suction holes 44 perforated suction conveyor 45, the endlessly revolves and its top in the plane of the second, lower shape shoulder 8. The upstream end of the conveyor of the conveyor 3 closes flush with a rear edge of the second, lower form shoulder 8 and takes over in the Tube pushed objects 4 and the film tube 6 even downstream of the hose forming device 1. In the area the tube forming device 1 itself, i.e. in the field of lower form shoulder 8, is therefore not a conveyor intended. The transport of the objects 4 in this area takes place indirectly through the film 5, which over the baffles 15 and 16 of the second, lower mold shoulder 8 is pulled. The suction conveyor 3 also acts as a puller for the film 5 and can also be packaged in the absence of Objects 4 the film 5 through the tube forming device 1 pull. In particular threading the film 5 in the tube forming device 1 is thereby facilitated.

Zur automatischen Einstellung der Schlauchformeinrichtung 1 weist die gezeigte Verpackungsmaschine ferner eine Steuereinrichtung und eine Speichereinrichtung auf, die in den Figuren nicht gezeigt sind. In der Speichereinrichtung sind unter entsprechenden Bezeichnungen jeweils den Gegenständen zugeordnete Gegenstandsparameter wie beispielsweise Höhe, Breite, Länge und andere Parameter, die die Einstellung der Schlauchformeinrichtung beeinflussen, wie beispielsweise Farbe des Gegenstandes oder Folienart, notwendige Schmelztemperatur etc. abgespeichert. Die Steuereinrichtung ist jeweils mit den Stellmotoren verbunden, um diese in Abhängigkeit der gespeicherten Gegenstandsparameter anzusteuern.For the automatic adjustment of the hose shaping device 1 the packaging machine shown also has a control device and a storage device shown in the figures are not shown. In the storage device are under corresponding names assigned to the objects Item parameters such as height, width, Length and other parameters that affect the setting of the tube forming device affect how color of the Object or type of film, necessary melting temperature etc. saved. The control device is in each case with the Actuators connected to this depending on the stored To control object parameters.

Über eine ebenfalls nicht dargestellte Eingabeeinheit wird der zu verpackende Gegenstand ausgewählt, wonach die unter der entsprechenden Bezeichnung gespeicherten Parameter durch die Steuereinrichtung aus dem Datenspeicher gelesen werden. Die Steuereinrichtung errechnet daraus die Sollposition für die Stellantriebe und steuert diese mit entsprechenden Signalen an. Die errechneten Werte werden dabei über ein Bussystem an die Motorsteuerung übertragen. Die Stellmotoren fahren die gewünschte Position an und melden über das Bussystem das Erreichen des Positionswertes an die Steuerung. Dementsprechend wird die Schlauchformeinrichtung vollständig automatisch nur durch Eingabe des zu verpackenden Gegenstandes eingestellt.An input unit, also not shown, is used the item to be packaged is selected, after which the under the corresponding name saved parameters the control device can be read from the data memory. The control device uses this to calculate the target position for the actuators and controls them with appropriate Signals. The calculated values are over a Transfer the bus system to the engine control. The servomotors move to the desired position and report via the bus system reaching the position value to the control. Accordingly, the tube forming device becomes complete automatically only by entering the item to be packed set.

Nachfolgend wird die Funktions- und Wirkungsweise der Verpakkungsmaschine näher erläutert.The following is the function and mode of operation of the packaging machine explained in more detail.

Zunächst wird die Folie 5 in die Schlauchformeinrichtung 1 eingefädelt. Hierzu wird die Folie 5 von der Vorratsrolle von Hand abgenommen und über die Leitbleche 14 der oberen Formschulter 7 geführt. Die Randbereiche der Folie 5 werden über die ersten Formkanten 12 der ersten, oberen Formschulter 7 gezogen und nacheinander um die zweiten und dritten Formkanten je eines der Leitbleche 15 und 16 geführt. Der unter dem Leitblech 15 geführte Abschnitt der Folie 5 und der auf die Oberseite des Leitbleches 16 umgeschlagene Rand der Folie 5 werden durch den Spalt zwischen den beiden Leitblechen 15 und 16 gezogen. Die Folie 5 wird soweit durch die Schlauchformeinrichtung 1 gezogen, daß ein ausreichender Abschnitt auf dem Abförderer 3 zu liegen kommt.First, the film 5 is in the tube forming device 1 threaded. For this purpose, the film 5 from the supply roll of Hand removed and over the guide plates 14 of the upper form shoulder 7 led. The edge areas of the film 5 are over the first mold edges 12 of the first, upper mold shoulder 7 drawn and successively around the second and third mold edges one of the guide plates 15 and 16 guided. The one under the Guide plate 15 guided section of the film 5 and on the Top of the baffle 16 folded edge of the film 5th are through the gap between the two baffles 15 and 16 drawn. The film 5 is so far through the tube forming device 1 drawn that a sufficient section the conveyor 3 comes to rest.

Die für die jeweiligen Gegenstände 4 erforderliche Breite und Höhe des ablaufenden Schlauches 6 wird durch Betätigen der Einstellspindel 26 und der Höhenverstellspindel 46 eingestellt. Dies kann vor oder nach Einfädeln der Folie 5 erfolgen und wird von der Steuereinrichtung und den Stellmotoren, die eine motorische Einstellvorrichtung bilden, nach einer entsprechenden Eingabe des Gegenstandes bewirkt.The width and required for the respective objects 4 Height of the running hose 6 is by pressing the Adjustment spindle 26 and the height adjustment spindle 46 set. This can be done before or after threading the film 5 and is controlled by the control device and the servomotors, which form a motorized adjusting device, according to a corresponding entry of the object causes.

Durch Betätigen des Abförderers 3 wird die Folie 5 durch die Schlauchformeinrichtung 1 gezogen. Hierbei kann durch Verschwenken der Leitbleche 14 die Ausrichtung der ersten Formkanten 12 eingestellt werden. Durch Schwenken der Leitbleche 14 nach außen in Richtung der Pfeile f wird die von der Folie im Bereich der Ränder 11 zurückzulegende Wegstrecke verlängert, der Bauch der Folie 5 im Bereich zwischen den ersten Formkanten 12 und den zweiten Formkanten 17 verringert und ggf. die Spannung der Folie 5 in den Randbereichen erhöht. Ein Zusammenschieben der Leitbleche 14 entgegen der Pfeile f verringert die Spannung in den Randbereichen 11 und vergrößert den Bauch, den die Folie 5 im Bereich zwischen den ersten und zweiten Formkanten 12 bzw. 17 wirft. Diese Winkeleinstellung kann ebenfalls durch die Steuereinrichtung bewirkt werden, wobei eine Nachjustierung ggf. von Hand oder durch manuelle Eingabe korrigierter Sollwerte vorgenommen werden kann. By actuating the conveyor 3, the film 5 through the Hose forming device 1 pulled. This can be done by swiveling the baffles 14 align the first Form edges 12 can be adjusted. By swiveling the guide plates 14 outwards in the direction of the arrows f is that of the film in the area of the edges 11 distance to be covered extended, the belly of the film 5 in the area between the first mold edges 12 and the second mold edges 17 reduced and possibly the tension of the film 5 in the edge areas elevated. A pushing the guide plates 14 against the Arrows f reduce the tension in the edge regions 11 and enlarges the belly, which the film 5 in the area between the first and second mold edges 12 and 17 throws. This angle setting can also by the control device are effected, readjustment if necessary by hand or by manually entering corrected setpoints can be.

Die Gegenstände 4 werden gemäß Fig. 1 von links nach rechts auf der Transporteinrichtung 2 transportiert und in den von den Formschultern 7 und 8 aufgespannten Folientunnel geschoben. Im Bereich der unteren Formschulter 8 werden die Gegenstände 4 durch die über die untere Formschulter 8 gezogene Folie 5 transportiert. Stromab der Schlauchformeinrichtung 1 werden die Gegenstände von dem Abförderer 3 abtransportiert und ggf. einer Verschweißvorrichtung zugeführt.The objects 4 are, according to FIG. 1, from left to right transported on the transport device 2 and in the the shoulders 7 and 8 stretched membrane tunnel. The objects are in the area of the lower shape shoulder 8 4 through the drawn over the lower shape shoulder 8 Slide 5 transported. Downstream of the hose shaping device 1 the objects are removed by the conveyor 3 and possibly fed to a welding device.

Claims (17)

  1. Packing machine for packing articles (4) into a film (5), with a tube shaping device (1) for shaping a tube (6) from a film substantially flat prior to tube shaping, and a transporting device (2) for transporting the articles into the tube (6), the tube shaping device (1) having several pairs of shaping edges (12, 17, 18) for reversing or deflecting the film, characterized in that the shaping edges (12, 17, 18) are so positioned relative to one another that the path over the shaping edges along lines parallel to the borders (11) of the film (5) from an entrance of the film into the tube shaping device (1) up to the exit from said tube shaping device (1) is shorter in the vicinity of the film borders than in a central area of the film.
  2. Packing machine according to claim 1, characterized in that the tube shaping device (1) has a first shaping shoulder (7) with first shaping edges (12) and a second shaping shoulder (8) with second and third shaping edges (17, 18), the shaping edges (12, 17, 18) of in each case one shaping edge pair being preferably located in a common plane and in each case one of the first shaping edges (12) and an associated second shaping edge (17) are in two different planes.
  3. Packing machine according to claim 2, characterized in that the first shaping shoulder (7) is constructed as a trapezoidal, more particularly multipiece sheet metal part (14) and the second shaping shoulder has two substantially triangular sheet metal pieces (15, 16), which overlap one another in such a way that the third shaping edges (18) converge in the tube exit direction and overlap one another and the second shaping edges (17) move apart in the tube exit direction.
  4. Packing machine according to at least one of the claims 1 to 3, characterized in that the angular orientation (u) of at least one of the shaping edge pairs (12) is adjustable and preferably the shaping edges (12) are pivotable about in each case one axis (c) perpendicular to a common plane of the shaping edges (12).
  5. Packing machine according to at least one of the claims 1 to 4, characterized in that the shaping edges (12, 17, 18) of in each case one shaping edge pair moved together in their extension and define a convergence angle (u, v, w), the convergence angle (u) of the first shaping edges (12) being larger than the convergence angle (v) of the second shaping edges (17) and preferably a projection of the convergence angle (u) of the first shaping edges (12) in the plane of the second shaping edges (17) is larger than the convergence angle (v) of the second shaping edges.
  6. Packing machine according to at least one of the claims 1 to 5, characterized in that the shaping edges (12, 17, 18) are displaceable in translatory manner and preferably the shaping edges are pairwise displaceable in the in each case opposite direction (b) and at least one pair of the shaping edges (12) is displaceable relative to the further shaping edges (17, 18).
  7. Packing machine according to one of the preceding claims, characterized in that the transporting device (2) terminates upstream of the tube shaping device (1), the latter being free from transporting devices and the position of a downstream end of the transporting device (2) is adjustable.
  8. Packing machine according to claim 7, characterized in that the downstream end of the transporting device (2) is adjustable in accordance with the position of the movable shaping shoulder (8) of the tube shaping device (1) and in particular synchronously therewith.
  9. Packing machine according to claim 7 or 8, characterized in that an effective transporting path of the transporting device (2) is longitudinally adjustable.
  10. Packing machine according to at least one of the claims 7 to 9, characterized in that the downstream end of the transporting device (2) terminates substantially flush with a front of the tube shaping device (1) and is displaceable in accordance with its position in the transporting direction of the articles (4) and preferably the downstream end of the transporting device extends into a substantially V-shaped opening of the tube shaping device (1) and is longitudinally adjustable in accordance with a width of the opening transversely to the transporting direction.
  11. Packing machine according to at least one of the claims 7 to 10, characterized in that the transporting device (2) has at least one continuous conveying means (31) revolving about reversing means (32, 33, 34, 35, 41, 42, 43), the conveying means being guided about a displaceable reversing unit (32, 33, 34, 35, 41), which fixes the downstream end of the transporting device and there are preferably at least two fixed reversing means (42, 43), the displaceable reversing unit is positioned between the fixed reversing means, the conveying means is guided in substantially S-shaped manner about the displaceable reversing unit and portions of the conveying means extend between the reversing unit and the fixed reversing means in parallel directions, the reversing units being displaceable parallel to said portions of the conveying means.
  12. Packing machine according to at least one of the claims 7 to 11, characterized in that the transporting device (2) has a plurality of narrow, parallel-running conveyor belts (31), which are guided at the downstream end of the transporting device about stepped displaced reversing pulleys (32, 33, 34, 35), so that the downstream end is adapted in stepped manner to a V-shaped opening of the tube shaping device (1) and the reversing pulleys (32, 33, 34, 35) are mounted on a common, displaceable slide (36) and are displaceable synchronously to one another parallel to the conveying direction.
  13. Packing machine according to at least one of the claims 1 to 12, characterized in that there is a discharge device (3), particularly a suction belt conveyor, for conveying away the articles enveloped in the tube and preferably the discharge device is connected to the tube shaping device (1) substantially flush with an outlet side thereof.
  14. Packing machine according to one of the preceding claims, characterized in that there is an adjusting device (25, 50; 26, 51) for adjusting the tube shaping device (1) for different articles (4) to be packed and a control device for controlling the adjusting device as a function of article parameters.
  15. Packing machine according to claim 14, characterized in that a storage means is provided for storing article parameters associated with a particular article (4) and the control device is constructed for controlling the adjusting device as a function of the stored article parameters and in particular there is an input unit for inputting the article to be packed and a reading unit for reading the corresponding article parameters from the storage device.
  16. Packing machine according to claim 14 or 15, characterized in that the adjusting device in each case has servomotors (50, 51) associated with different movement axes of the tube shaping device (1) and which are controlled by the control device.
  17. Packing machine according to at least one of the claims 14 to 16, characterized in that the adjusting device is provided for adjusting the transporting device (2).
EP97106684A 1996-05-09 1997-04-23 Packaging machine equipped with a system to form a tube Expired - Lifetime EP0806346B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99108893A EP0941927A3 (en) 1996-05-09 1997-04-23 Packaging machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19618559 1996-05-09
DE19618559A DE19618559A1 (en) 1996-05-09 1996-05-09 Packaging machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP99108893A Division EP0941927A3 (en) 1996-05-09 1997-04-23 Packaging machine

Publications (3)

Publication Number Publication Date
EP0806346A2 EP0806346A2 (en) 1997-11-12
EP0806346A3 EP0806346A3 (en) 1998-09-09
EP0806346B1 true EP0806346B1 (en) 1999-08-18

Family

ID=7793748

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99108893A Withdrawn EP0941927A3 (en) 1996-05-09 1997-04-23 Packaging machine
EP97106684A Expired - Lifetime EP0806346B1 (en) 1996-05-09 1997-04-23 Packaging machine equipped with a system to form a tube

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP99108893A Withdrawn EP0941927A3 (en) 1996-05-09 1997-04-23 Packaging machine

Country Status (4)

Country Link
US (1) US5799470A (en)
EP (2) EP0941927A3 (en)
DE (2) DE19618559A1 (en)
ES (1) ES2138412T3 (en)

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AU6547998A (en) * 1997-03-11 1998-09-29 Ranpak Corp. Cushioning conversion machine and method
DE19953220A1 (en) * 1999-11-05 2001-05-10 Barsch Horizontale Verpackungs Horizontal flow wrapper
AU2002234142A1 (en) * 2000-10-30 2002-05-15 Stork Fabricators, Inc. Modular shrink-wrap machine
DE10251072A1 (en) * 2002-11-02 2004-05-13 Rovema Verpackungsmaschinen Gmbh Form shoulder for forming a film web
US10160177B2 (en) * 2014-06-27 2018-12-25 Pregis Intellipack Llc Protective packaging device queue control
KR102410333B1 (en) * 2015-07-07 2022-06-20 오씨아이 주식회사 Packaging apparatus
EP4166462A1 (en) * 2021-10-15 2023-04-19 MULTIVAC Sepp Haggenmüller SE & Co. KG Sealing machine and method for adjusting characteristics of a sealing machine

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Also Published As

Publication number Publication date
EP0941927A3 (en) 2000-04-12
DE59700342D1 (en) 1999-09-23
EP0806346A3 (en) 1998-09-09
DE19618559A1 (en) 1997-11-13
EP0941927A2 (en) 1999-09-15
US5799470A (en) 1998-09-01
ES2138412T3 (en) 2000-01-01
EP0806346A2 (en) 1997-11-12

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