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EP1251093B1 - Device for delivering piles of folding boxes - Google Patents

Device for delivering piles of folding boxes Download PDF

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Publication number
EP1251093B1
EP1251093B1 EP02005689A EP02005689A EP1251093B1 EP 1251093 B1 EP1251093 B1 EP 1251093B1 EP 02005689 A EP02005689 A EP 02005689A EP 02005689 A EP02005689 A EP 02005689A EP 1251093 B1 EP1251093 B1 EP 1251093B1
Authority
EP
European Patent Office
Prior art keywords
transport
stop
stacking shaft
stacking
hold
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
EP02005689A
Other languages
German (de)
French (fr)
Other versions
EP1251093A3 (en
EP1251093A2 (en
Inventor
Stefan Furthmüller
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.)
Bahmueller Maschinenbau Prazisionswerkzeuge GmbH
Original Assignee
Bahmueller Maschinenbau Prazisionswerkzeuge GmbH
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 Bahmueller Maschinenbau Prazisionswerkzeuge GmbH filed Critical Bahmueller Maschinenbau Prazisionswerkzeuge GmbH
Publication of EP1251093A2 publication Critical patent/EP1251093A2/en
Publication of EP1251093A3 publication Critical patent/EP1251093A3/en
Application granted granted Critical
Publication of EP1251093B1 publication Critical patent/EP1251093B1/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
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/32Auxiliary devices for receiving articles during removal of a completed pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/42Piling, depiling, handling piles
    • B65H2301/422Handling piles, sets or stacks of articles
    • B65H2301/4223Pressing piles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/42Piling, depiling, handling piles
    • B65H2301/422Handling piles, sets or stacks of articles
    • B65H2301/4226Delivering, advancing piles
    • B65H2301/42264Delivering, advancing piles by moving the surface supporting the lowermost article of the pile, e.g. conveyor, carriage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/60Other elements in face contact with handled material
    • B65H2404/69Other means designated for special purpose
    • B65H2404/694Non driven means for pressing the handled material on forwarding or guiding elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/17Nature of material
    • B65H2701/176Cardboard
    • B65H2701/1764Cut-out, single-layer, e.g. flat blanks for boxes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/17Nature of material
    • B65H2701/176Cardboard
    • B65H2701/1766Cut-out, multi-layer, e.g. folded blanks or boxes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/19Specific article or web
    • B65H2701/191Bags, sachets and pouches or the like

Definitions

  • the mechanical parts of the stacker must work at very high speeds. In order to keep the speeds reasonably within tolerable limits, two stacks are formed one above the other, which are separated from each other by temporary support means. Thereby Time is gained to be able to remove a finished stack from the stacking device.
  • the maximum speed with which the stacks can be moved is due to the frictional engagement between stacked products. If the stack were accelerated and decelerated too quickly, the products in the stack would slip against each other. The static friction between the products limits the maximum acceleration and thus ultimately the achievable speed. Due to the intermediate stacks or the two stacks temporarily superimposed, time is gained to get a finished stack out of the machine, about as much time as the next stack needs to form.
  • the rake may protrude with its prong through the slots of the downstream stop to form temporary support means in the stack tray.
  • the rake must perform a vertical movement in the shaft and it is pulled out at the lower end of the stacking shaft out of this, outside the stacking shaft returned to the upper position to be advanced above the shot of the products in the stacking shaft. It is then moved downwards in the stacking shaft in direct current with the products falling down in the shaft. Even at low lowering speed, there is no danger the collision with incoming products, because the rake very quickly passes the area where the products are injected via the extraction rollers.
  • the known machine has a kind of cross slide with two mutually orthogonal linear axes.
  • the drive of this arrangement is done via two endless belts, which are connected to the support beam to which the tines of the rake are attached.
  • the drive takes place via a toothed belt, which revolves around stationary rollers. Due to this arrangement, the rake always performs the same movement, regardless of whether products are stacked, which are short or long seen in the transport direction.
  • the space curve of the belt must be designed so that the stroke of the rake seen in the transport direction is sufficient so that the tines of the rake can be withdrawn even with the largest products behind the relevant stop. In the case of very small products, this creates an extremely large idle stroke, which costs unnecessary time and also forces very high speeds with small products. In particular, therefore, the folding machine with small products can not operate at a higher speed, although this would allow smaller products easily.
  • cross slide guide with the two orthogonal linear axes is technically very complicated and requires large masses to be moved with large forces of second order.
  • the temporary support means in the shape of the rake are also used in the known machine to hold down the stack of carton tubes and depress it into an output conveyor.
  • the rake has to be guided parallel to the output path and therefore is not available for taking blanks over a longer period of time.
  • the lift table but also can not be used, even more support means are used in the form of fingers that carry the stack of incoming products as long as the lift table has been released from the previous stack and can be driven up to the stack height.
  • DE 24 59 571 describes a stacking device for wood panel blanks. Stacked wooden panels are separated in a Trennsäge Alpine in strips of different width and transferred to a storage table.
  • the storage table has a wedge shape and is located in the advanced position in which it receives the split plates, above the stack to be produced.
  • the support table can be withdrawn. Upon retraction, it pivots obliquely downward a small amount so that the stacks only have to move over a short height range as they pass from the support table to the top of the stack.
  • the guide rail itself on which the table is guided, is rigid and immutable.
  • the first support means are fingers or similar elements which can be moved back and forth in the clearance space of the stacking shaft without making a vertical movement.
  • the second temporary support means act as hold-downs to hold the finished stack formed on the lift table together and thread it into the exit conveyor. To accomplish this task, the second temporary rest means must perform two movements. They must be able to move vertically through the stacking shaft and they must also be able to move out of the clearance space of the stacking shaft.
  • the tines of the second temporary support means do not move parallel to the axis of the stacking shaft, but along a circular arc with a large radius.
  • a pivot axis is provided, which is perpendicular to the transport direction and horizontal, so that the sheet movement comes about, which makes a further linear axis superfluous.
  • the second temporary support means to move along a linear axis only during the withdrawal movement out of the stacking shaft and the advancing movement in the stacking shaft. Moving from top to bottom through the stacking bay and outside the stacking bay from bottom to top is not a straight movement.
  • the one stop preferably the upstream stop is designed as a vibrator. This also allows a subsequent adjustment of the carton tubes when the seam is glued and the adhesive is not yet fully cooled.
  • a reliable removal of the finished stack can be achieved if the output transport device comprises a plurality of parallel conveyor belts running side by side.
  • the removal of the stack from the lifting table is improved if it is also fan-shaped, and at least one of the conveyor belts extends into a gap between the tines of the lifting table.
  • a low-lift table can be achieved, which has no rollers and it is also no slider needed to push the stack from the lift table down.
  • conveyor belts can run laterally next to the lifting table and extend to its upstream edge.
  • the smooth running of the conveyor belts and the freedom from maintenance can be improved if the conveyor belts in the area of the respective working drums by rolling get supported. As a result, sliding conditions are avoided.
  • a hold-down device This is expediently also equipped with endless conveyor belts, which act on the top of the stack.
  • the working strand of these conveyor belts run parallel to the surface which forms the working streams of the conveyor belts on which the stacks rest.
  • Fig. 1 shows an apparatus 1 for forming stacks 2 of flat products 3, for example, folding carton blanks or Faltschachtelschläuchen.
  • the illustration is highly schematic, illustrating only those parts which are essential to understanding.
  • the products 3 run from right to left and come, for example, from a folding machine in which the carton blanks are formed into carton tubes which are glued or stapled along the seam.
  • a rightward direction is an upstream direction with respect to the flow of products 3 and a leftward movement is a downstream movement.
  • the device 1 includes a machine frame 4, which is highly schematic and cut shows.
  • the machine frame 4 has lateral pillars 5, which are connected to one another via a transverse yoke 6.
  • the pillars 5 are on a ground foundation 7, on the rear support pillars 8 are also elevated.
  • an upper machine yoke 9, on which a frame frame 11 is attached extends.
  • a stacking shaft 12 is formed downstream of the two pillars 5, which is open at the side and in the transport direction so downstream of a stop 13 and upstream of a stop 14 is limited.
  • the stop 14 consists of a substantially plane plate which is provided with vertical slots.
  • the plate 14 is fixed to an eccentric shaft 15 which between the two pillars 5 is rotatably mounted. In this way, the upstream stop 14 serves as a vibrator.
  • the stop 13, however, is substantially fixed during operation, but can be adjusted in its distance from the stop 14.
  • Both stop 14 and stop 13 define planes that are parallel to one another.
  • a transport device 16 which comprises two transport rollers 17 and 18.
  • the two transport rollers 17 and 18 are axially parallel horizontally mounted between the two pillars 5 and rotationally driven.
  • Their peripheral speed is greater than corresponds to the transport speed at which the products 3 are brought in from the right.
  • the products 3 arrive in a continuous stream to the conveyor 16 and are spaced from each other in the stream. Between the rollers 17 and 18, they are shot at high speed in the stacking shaft 12, and fall in this lying transversely downwards, as will be explained in detail below.
  • the lifting table 19 In the lower area of the stacking shaft 12 is a lifting table 19, which can be moved back and forth between the two in Fig. 1 recognizable layers by means of links 21 and 22.
  • the lifting table 19 is designed in the manner of a rake, and has a plurality of parallel to the transport direction extending tines, which are connected to each other via a stiffening element 24.
  • the movement the lifting table 19, takes place substantially parallel to the surfaces which are formed by the stops 13 and 14.
  • the stopper 13 is also designed as a rake and consists of a plurality of substantially vertically downwardly hanging tines, between which vertically extending and downwardly open slots are included.
  • first temporary support means 25 and 26 are best provided in FIG.
  • the support means 25 are two longitudinally movable fingers, which can be withdrawn by means of a working cylinder 27 in the clearance space of the stacking shaft 12 before and out of this.
  • the two fingers 25 pass through corresponding openings in the upstream stop 14 and are located below the lower transport roller 16.
  • the two fingers 25 are spaced apart such that they can laterally support the smallest folding carton tube to be processed. In the event that two such fingers are not sufficient when very wide blanks to be stacked, in addition to these two fingers to the outside even more fingers 25 can be arranged. All fingers 26 are driven synchronously and at the same time advanced or withdrawn into the stacking shaft 12.
  • the fingers 25, 26 define a plane that is perpendicular to the stop 14 and the stop 13 and that is not inclined transversely to the transport direction.
  • a second temporary support means is effective, which is also designed as a rake regularly spaced tines 28.
  • the prongs 28 are seated on a crossbar, and project depending on the operating position through the slots in the downstream stop 13 in the clearance space of the stacking shaft 12th
  • the two guide rails 31 sit at the bottom of an intermediate frame 32 and serve as guide rails for a guide carriage 33, on which the beam 29 is guided below the rails. With the aid of a drive device, not shown, the carriage 33 can be moved along the two guide rails 31 by means of toothed belts (not shown).
  • the intermediate frame 32 is pivotally mounted in the machine frame 4 by means of an axle 35 which is fixed to frame parts, not shown. The axis 35 extends below the guide rails 31st
  • the axis 35 extends horizontally and transversely to the transport path of the products 3.
  • the opposite end of the intermediate frame 32 is guided via a link assembly 37 in frame-fixed vertical guide rails 38. Also Here, for reasons of clarity, the drive device for the links 37 and an associated slide 41 running in the guide rails 38 are not shown.
  • the tines 28 of the second temporary support means can be withdrawn in this way behind the downstream stop 13, and they can also perform a pivoting movement with respect to the axis 35.
  • a transport device 42 which includes a plurality of parallel adjacent endless conveyor belts in the form of flat belt 43.
  • the belts 23 are supported along the transport path by transport rollers 44, which are rotatably mounted in the machine frame.
  • the conveyor belts 43 form working streams that extend along a plane that is perpendicular to planes defined by the two stops 13 and 14.
  • the plane defined by the working flow of the conveyor belts 43 rises from the pillar 5.
  • the distance between the conveyor belts 43 and the bearing is chosen so that they partially reach in between the tines of the lifting table 19 or pass past it laterally, so that a collision is avoided.
  • a hold-down device 45 which is parallel to three is formed adjacent to each other endless belts 46.
  • the distance that the endless belts have from each other is chosen so that between them the tines 28 find place, with a conveyor belt 46 in the middle of the group of tines 28 runs.
  • the necessary deflection pulley is stored next to the back of the stopper 13 behind a corresponding prong of this.
  • the hold-down device 45 starts just behind the downstream stop 13 and extends as shown approximately to the end of the transport device 42.
  • the lower edge of the stop 13 is aligned with the plane defined by the working volume of the conveyor belts 46 between the hold-down device 45 and the transport device 42 a channel is defined which has the same clear height at the beginning and at the end.
  • the storage rollers for the conveyor belts 43 and 46 are schematically indicated in the figure, but otherwise not described, since the manner of storage is known to the expert and otherwise the manner of storage for the further understanding of the invention is important.
  • the distance between the two stops 13 and 14 is adjusted by adjusting the position of the stopper 13.
  • the distance is chosen so that the products 3 fit substantially backlash between them when they rest on one of the support means and the lifting table 19.
  • the lifting table 19 is raised to the uppermost position.
  • the prongs 28 are advanced into the clearance space of the stacking shaft 12 because the guide rails 31 are pivoted to the lowermost position.
  • the underside of the tines 28 extends in extension of that area which is defined by the working flow of the conveyor belts 46 of the hold-down device 45.
  • the tines 28 are aligned with the corresponding gaps in the table 19.
  • the fingers 25 and 26 of the first support means are advanced into the clearance space such that they do not collide with either the tines 28 or the lift table 19.
  • the first carton tube 3 is injected, it comes to rest on the top of the tines 28. Further folding carton hoses are deposited on the respective stack already located in the stacking shaft 12, as shown in FIG. 3. The stack is initially still supported by the top of the tines 28.
  • the guide rails 31 are pivoted about the axis 35 upwards in the upper end position.
  • the guide rails 31 via the carriage 41, which is guided in the guide rails 38 and driven accordingly, raised at its stop 13 adjacent the end.
  • the pivot drive for the guide rails 31 is stopped and instead the drive for the carriage 33 in progress.
  • the prongs 28 are advanced through the gaps in the stop 13 into the stacking chute 12. In the advanced position, its underside is clearly above that plane along which the folding carton tubes 3 are injected into the stacking shaft 12, as shown in FIG. 5.
  • the pivot drive for the guide rails 31 is set in motion in the sense of lowering.
  • the tines 28 run in cocurrent with the falling Faltschachtelschläuchen 3 down through the stacking shaft 12 therethrough.
  • the lifting table 19 was continuously lowered, to the extent in FIG the stack 2 has become higher, so that the top edge ie the head of the stack remains about always the same distance from the Einschussebene, so that there are approximately the same case conditions for the reaching into the stacking shaft 12 carton hoses.
  • the stopper 14 is simultaneously moved over the eccentric shaft 15 periodically against the stack to shake the stack together and to correct distortion errors in the case of glued seams on the folding box blanks a little.
  • the lower layers of the blanks are kept closed by the upper layers. Only the upper layers can bounce slightly due to the return force of the corrugated board.
  • the lowering of the tines 28 in the stacking shaft 12, is synchronized, so that the tips of the tines 28, the Einschussebene to the transport rollers happen at the moment in which no carton tube 3 is included.
  • the fingers 25 and 26 are advanced as shown in FIG. 7.
  • the stack is compressed by the tines 28 are pressed from above with force. This space is created to advance the fingers 25 and 26 in the stacking shaft 12.
  • the transport means for the carriage 33 is set in motion to move the tines 28 in the flow direction.
  • the conveyor belts 43 of the transport device 42 are turned on and also the conveyor belts 46 of the hold-down device 45.
  • the compressed by means of the tines 28 stack 2 is threaded into the channel between the hold-down device 45 and the transport device 42 and transported in the transport direction, as shown 9 shows. In this case, all parts which are in engagement with the stack 2, run at the same linear speed.
  • the fingers 25 and 26 may be dimensioned relatively weak, since the stack they have to carry until the lift table is in position again, is relatively small and therefore light.
  • the main advantage of the arrangement according to the invention is that the tines perform a pivotal movement with respect to the axis 35. This significantly simplifies storage.
  • the rotary actuator and the horizontal drive are mechanically decoupled from each other. In this way, the longitudinal stroke, the tines 28 perform parallel to the surface of the lifting table 19 can be limited to the extent necessary to withdraw them just behind the stop 13. You do not need to go through the same stroke with small folding carton hoses 3 as with large blanks. In this way, the folding machine that produces the folding box blanks 3 can run much faster with small blanks than with large blanks, so that although the cycle time is dictated by the structure of the folding strap, a higher throughput is achieved.
  • folding carton hoses seen in the transport direction have very large dimensions, it may come after shooting into the stacking shaft 12 to premature contact of the leading edge of the inserted folding carton tube with the top of the already formed stack. The leading edge then tends to snag under some circumstances, causing the carton to rest obliquely in the well 12.
  • the upper yoke 9 or the lower frame 11 can be lowered slightly, whereby a greater depth of the stacking shaft is achieved.
  • On the pillars 5 is accordingly another Set of fingers 25 ', which are below the fingers 25, by the amount of additional stack shaft depth.
  • a device for destacking folding box hoses has a height-adjustable lifting table. Above the lift table are first temporary support means that can be pulled out of the stacking shaft or advanced into this. Another set of temporary support means may be withdrawn from the stacking well or moved down the stacking well. The second support means serve simultaneously to push a finished stack together to thread it between a transport device of a hold-down device can. While the lift table is engaged in the removal of the stack along with the second support means, the first temporary support means ensure that it can still be unstacked in the stack shaft without interruption.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
  • Pile Receivers (AREA)
  • Packages (AREA)
  • Cartons (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

A device for stacking folding-box tubes demonstrates a vertically-adjustable elevating platform. First temporary bearing means, which can be pulled out of or advanced into the stacking well, are located above the elevating platform. Another set of temporary bearing means can be pulled out of the stacking well as well as moved downward within the stacking well. The second bearing means also press a completed stack together in order to be able to thread it between a conveying device of a holding-down appliance. The first temporary bearing means provide for uninterrupted stacking within the stacking well while the elevating platform, together with the second bearing device, are busy carrying the stack away.

Description

Aus der DE 695 00 305 ist eine Vorrichtung bekannt, um aus einem Strom von ankommenden Faltschachtelschläuchen Kleinstapel zu erzeugen. Die Produkte kommen im festen zeitlichen Raster an. Der Abstand zwischen aufeinanderfolgenden Produkten definiert die maximale Pause innerhalb die Vorrichtung zum Abstapeln auf den nächsten Stapel umschalten muss. Die Vorrichtung muss mit sehr hoher Geschwindigkeit unterbrechungsfrei arbeiten, damit sie in der Lage ist, die Produkte entgegenzunehmen, ohne Rückwirkungen auf die vorausgehende Faltmaschine zu verursachen.From DE 695 00 305 a device is known to produce from a stream of incoming Faltschachtelschläuchen small pile. The products arrive at a fixed time frame. The distance between successive products defines the maximum pause within the device for destacking to switch to the next stack. The device must operate at very high speed without interruption, so that it is able to accept the products without causing any repercussions on the preceding folding machine.

Die mechanischen Teile der Stapelvorrichtung müssen dazu mit sehr hoher Geschwindigkeiten arbeiten. Um die Geschwindigkeiten einigermaßen in erträglichen Grenzen zu halten, werden übereinander zwei Stapel gebildet, die durch temporäre Auflagemittel voneinander getrennt werden. Dadurch wird Zeit gewonnen, um einen fertigen Stapel aus der Stapelvorrichtung herausschaffen zu können.The mechanical parts of the stacker must work at very high speeds. In order to keep the speeds reasonably within tolerable limits, two stacks are formed one above the other, which are separated from each other by temporary support means. Thereby Time is gained to be able to remove a finished stack from the stacking device.

Die maximale Geschwindigkeit, mit der die Stapel bewegt werden können, ergibt aufgrund des Reibschlusses zwischen den aufeinander liegenden Produkten im Stapel. Würde der Stapel zu schnell beschleunigt und abgebremst werden, würden die Produkte im Stapel gegeneinander verrutschen. Die Haftreibung zwischen den Produkten begrenzt die maximale Beschleunigung und damit auch letztlich die erreichbare Geschwindigkeit. Aufgrund des Zwischenstapelns bzw. der zwei Stapel die temporär übereinander entstehen, wird Zeit gewonnen, um einen fertigen Stapel aus der Maschine herauszuschaffen, nämlich etwa so viel Zeit, wie der nächste Stapel zum Bilden braucht.The maximum speed with which the stacks can be moved is due to the frictional engagement between stacked products. If the stack were accelerated and decelerated too quickly, the products in the stack would slip against each other. The static friction between the products limits the maximum acceleration and thus ultimately the achievable speed. Due to the intermediate stacks or the two stacks temporarily superimposed, time is gained to get a finished stack out of the machine, about as much time as the next stack needs to form.

Es entsteht jedoch das Problem, die temporären Auflagemittel schnell genug in den Stapelschacht zu bringen, ohne die Gefahr einer Kollision mit den mit hoher Geschwindigkeit ankommenden Produkten. Um die Kollisionwahrscheinlichkeit zu verringern, ist bei der bekannten Maschine ein Rechen vorhanden, der die temporären Auflagemittel bildet. Der Rechen kann mit seinem Zinken durch die Schlitze des stromabwärtsgelegenen Anschlags hindurchragen, um in dem Stapelschacht temporärer Auflagemittel zu bilden. Der Rechen muss in dem Schacht eine Vertikalbewegung vollführen und er wird am unteren Ende des Stapelschachtes aus diesem herausgezogen, außerhalb des Stapelschachtes in die obere Stellung zurückgeführt, um oberhalb des Einschusses der Produkte in den Stapelschacht vorgeschoben zu werden. Sodann wird er im Stapelschacht im Gleichstrom mit den im Schacht herunterfallenden Produkten nach unten bewegt. Auch bei niedriger Absenkegeschwindigkeit besteht keine Gefahr der Kollision mit ankommenden Produkten, weil der Rechen sehr schnell den Bereich passiert, in dem die Produkte über die Abzugswalzen eingeschossen werden.However, the problem arises of bringing the temporary supports into the stack well fast enough without the risk of colliding with the high speed products. In order to reduce the probability of collision, in the known machine there is a rake which forms the temporary support means. The rake may protrude with its prong through the slots of the downstream stop to form temporary support means in the stack tray. The rake must perform a vertical movement in the shaft and it is pulled out at the lower end of the stacking shaft out of this, outside the stacking shaft returned to the upper position to be advanced above the shot of the products in the stacking shaft. It is then moved downwards in the stacking shaft in direct current with the products falling down in the shaft. Even at low lowering speed, there is no danger the collision with incoming products, because the rake very quickly passes the area where the products are injected via the extraction rollers.

Damit der Rechen die gewünschte Bewegung vollführt, weist die bekannte Maschine ein Art Kreuzschlitten auf mit zwei rechtwinklig zueinander verlaufenden linearen Achsen. Der Antrieb dieser Anordnung geschieht über zwei endlose Riemen, die mit dem Tragbalken verbunden sind, an dem die Zinken des Rechens befestigt sind. Der Antrieb erfolgt über einen Zahnriemen, der um ortsfest Rollen umläuft. Aufgrund dieser Anordnung vollführt der Rechen immer die gleiche Bewegung, gleichgültig, ob Produkte abgestapelt werden, die in Transportrichtung gesehen kurz oder lang sind.So that the rake performs the desired movement, the known machine has a kind of cross slide with two mutually orthogonal linear axes. The drive of this arrangement is done via two endless belts, which are connected to the support beam to which the tines of the rake are attached. The drive takes place via a toothed belt, which revolves around stationary rollers. Due to this arrangement, the rake always performs the same movement, regardless of whether products are stacked, which are short or long seen in the transport direction.

Die Raumkurve des Riemens muss so gestaltet sein, dass der Hub des Rechens gesehen in Transportrichtung ausreicht, damit die Zinken des Rechens auch bei den größten Produkten hinter den betreffenden Anschlag zurückgezogen werden können. Bei sehr kleinen Produkten entsteht auf diese Weise ein extrem großer Leerhub, der unnötig Zeit kostet und auch bei kleinen Produkten zu sehr hohen Geschwindigkeiten zwingt. Insbesondere kann deswegen auch, die Faltmaschine mit kleinen Produkten nicht mit höherer Geschwindigkeit arbeiten, obwohl dies kleinere Produkte ohne weiteres zulassen würden.The space curve of the belt must be designed so that the stroke of the rake seen in the transport direction is sufficient so that the tines of the rake can be withdrawn even with the largest products behind the relevant stop. In the case of very small products, this creates an extremely large idle stroke, which costs unnecessary time and also forces very high speeds with small products. In particular, therefore, the folding machine with small products can not operate at a higher speed, although this would allow smaller products easily.

Ferner ist die Kreuzschlittenführung mit den beiden rechtwinklig zueinander liegenden Linearachsen technisch sehr aufwendig und bedingt große zu bewegende Massen mit großen Kräften zweiter Ordnung.Furthermore, the cross slide guide with the two orthogonal linear axes is technically very complicated and requires large masses to be moved with large forces of second order.

Die temporären Auflagemittel in Gestalt des Rechens, werden bei der bekannten Maschine auch dazu verwendet, um den Stapel aus Faltschachtelschläuchen nieder zu halten und ihn niedergedrückt in eine Ausgabetransporteinrichtung zu überführen.The temporary support means in the shape of the rake, are also used in the known machine to hold down the stack of carton tubes and depress it into an output conveyor.

In diesem Bereich muss der Rechen parallel zum Ausgabeweg geführt werden und steht deswegen über eine längere Zeitspanne nicht zur Aufnahme von Zuschnitten zur Verfügung. Um diese Zeit zu überbrücken, in denen der Rechen zum Abstapeln nicht zur Verfügung steht, anderseits der Hubtisch aber auch nicht benutzt werden kann, werden noch weitere Auflagemittel verwendet in Gestalt von Fingern, die so lange den Stapel aus ankommenden Produkten tragen, bis der Hubtisch von dem vorherigen Stapel freigeworden ist und in die Stapelhöhe nach oben gefahren werden kann.In this area, the rake has to be guided parallel to the output path and therefore is not available for taking blanks over a longer period of time. To bridge this time, in which the rake for stacking is not available, on the other hand, the lift table but also can not be used, even more support means are used in the form of fingers that carry the stack of incoming products as long as the lift table has been released from the previous stack and can be driven up to the stack height.

Die DE 24 59 571 beschreibt eine Stapelvorrichtung für Holzplattenzuschnitte. Übereinander gestapelte Holzplatten werden in einer Trennsägeeinrichtung in Streifen unterschiedlicher Breite aufgetrennt und auf einen Ablagetisch übergeben. Der Ablagetisch hat Keilform und befindet sich in der vorgeschobenen Stellung, in der er die aufgetrennten Platten zugeführt bekommt, oberhalb des zu erzeugenden Stapels. Mittels eines Schlittens an einer starren Führungsbahn kann der Auflagetisch zurückgezogen werden. Beim Zurückziehen schwenkt er um einen geringen Betrag schräg nach unten, damit die Stapel sich nur über einen kurzen Höhenbereich bewegen müssen, wenn sie von dem Auflagetisch auf dem Kopf des Stapels gelangen. Die Führungsschiene selbst an der der Tisch geführt ist, ist starr und ortsunveränderlich.DE 24 59 571 describes a stacking device for wood panel blanks. Stacked wooden panels are separated in a Trennsägeeinrichtung in strips of different width and transferred to a storage table. The storage table has a wedge shape and is located in the advanced position in which it receives the split plates, above the stack to be produced. By means of a carriage on a rigid guide track, the support table can be withdrawn. Upon retraction, it pivots obliquely downward a small amount so that the stacks only have to move over a short height range as they pass from the support table to the top of the stack. The guide rail itself on which the table is guided, is rigid and immutable.

Ausgehend hiervon ist es Aufgabe der Erfindung eine Vorrichtung zum Abstapeln von flachen Produkten insbesondere von Faltschachtelschläuchen zu schaffen, die flexible an die Größe anpassbar ist, und die mechanisch weniger aufwendig ist.Based on this, it is an object of the invention To provide a device for stacking flat products, in particular folding carton tubes, which is flexible adaptable to the size, and which is mechanically less expensive.

Diese Aufgabe wird erfindungsgemäße durch die Vorrichtung mit den Merkmalen des Anspruches 1 gelöst.This object is achieved by the device with the features of claim 1.

Bei der erfindungsgemäßen Vorrichtung sind zwei Arten temporärer Auflagemittel vorgesehen. Die ersten Auflagemittel sind Finger oder vergleichbare Elemente, die in das Lichtraumprofil des Stapelschachtes vor oder aus diesem zurückbewegt werden können, ohne dass sie eine Vertikalbewegung vollführen.In the device according to the invention, two types of temporary support means are provided. The first support means are fingers or similar elements which can be moved back and forth in the clearance space of the stacking shaft without making a vertical movement.

Sie befinden sich nicht allzu weit unterhalb jener Ebene, in der die Produkte über die Transporteinrichtung in den Stapelschacht eingeschossen werden. Sie sind jedoch tief genug angeordnet, um einen Stapel aufzunehmen, der während der Zeit entsteht, während der der Hubtisch nicht zur Aufnahme von Produkten bereit steht. Insoweit korreliert die Höhe dieses Stapels mit der Zeit, die benötigt wird, den Hubtisch frei zu bekommen und wieder in die Stapelposition zurückzuführen.You are not too far below the level where the products are injected into the stacking shaft via the conveyor. However, they are placed deep enough to accommodate a stack that arises during the time that the lift table is not ready to receive products. In that regard, the height of this stack correlates with the time it takes to clear the lift table and return it to the stacking position.

Die zweiten temporären Auflagemittel wirken als Niederhalter, um den auf den Hubtisch gebildeten fertigen Stapel zusammen zu halten und in die Ausgangstransporteinrichtung einzufädeln. Um diese Aufgabe zu erfüllen, müssen die zweiten temporären Auflagemittel zwei Bewegungen vollführen. Sie müssen sich vertikal durch den Stapelschacht bewegen lassen und sie müssen sich obendrein aus dem Lichtraumprofil des Stapelschachtes herausbewegen lassen.The second temporary support means act as hold-downs to hold the finished stack formed on the lift table together and thread it into the exit conveyor. To accomplish this task, the second temporary rest means must perform two movements. They must be able to move vertically through the stacking shaft and they must also be able to move out of the clearance space of the stacking shaft.

Bei der erfindungsgemäßen Lösung bewegen sich die Zinken der zweiten temporären Auflagemittel nicht parallel zu der Achse des Stapelschachtes, sondern längs einem Kreisbogen mit großem Radius. Hierzu ist eine Schwenkachse vorgesehen, die rechtwinklig zu der Transportrichtung und horizontal verläuft, damit die Bogenbewegung zustande kommt, die eine weitere Linearachse überflüssig macht. Es genügt, bei der erfindungsgemäßen Lösung, wenn sich die zweiten temporären Auflagemittel nur während der Rückzugsbewegung aus dem Stapelschacht und der Vorschubbewegung in dem Stapelschacht längs einer linearen Achse bewegen. Die Bewegung von oben nach unten durch den Stapelschacht und außerhalb des Stapelschachtes von unten nach oben ist keine gerade Bewegung.In the solution according to the invention, the tines of the second temporary support means do not move parallel to the axis of the stacking shaft, but along a circular arc with a large radius. For this purpose, a pivot axis is provided, which is perpendicular to the transport direction and horizontal, so that the sheet movement comes about, which makes a further linear axis superfluous. It suffices, in the solution according to the invention, for the second temporary support means to move along a linear axis only during the withdrawal movement out of the stacking shaft and the advancing movement in the stacking shaft. Moving from top to bottom through the stacking bay and outside the stacking bay from bottom to top is not a straight movement.

Durch entsprechende Lage der Schwenkachse wird dafür gesorgt, dass in der unteren Stellung eine Unterseite der zweiten temporären Auflagemittel parallel zu der Stapelfläche des Hubtisches liegt und dass die Rückzugsbewegung aus dem Stapelschacht parallel zur Auflagefläche des Hubtisches erfolgt.By appropriate position of the pivot axis is ensured that in the lower position, a bottom of the second temporary support means is parallel to the stacking surface of the lifting table and that the withdrawal movement from the stacking shaft is parallel to the support surface of the lifting table.

Es hat sich gezeigt, dass der Winkelfehler der Auflageseite der zweiten Auflagemittel beim Durchwandern des Stapelschachtes keinen negativen Einfluss auf die Qualität des Stapels hat. Dafür kann der mechanische Aufwand zum Führen der zweiten temporären Auflagemittel wesentlich verringert werden.It has been found that the angular error of the support side of the second support means when migrating through the stacking shaft has no negative impact on the quality of the stack. For the mechanical effort to guide the second temporary support means can be substantially reduced.

Die Verwendung von unabhängigen Antrieben, für die Schwenk- und die Vorschub- bzw. Rückzugsbewegung gestattet es, beide Bewegungshübe völlig unabhängig zu justieren. Dadurch wird auch der Leerweg, und somit die Totzeit verringert, um den die Zinken hinter den stromabwärtsgelegenen Anschlag zurückgezogen werden. Die Vorrichtung ist damit in der Lage, auch Faltmaschinen bedienen zu können, die bei kleineren Faltschachtelschläuchen mit höherer Geschwindigkeit arbeitet.The use of independent drives, for the pan and the feed or retraction movement allows to adjust both strokes completely independent. This also reduces the free travel, and thus the dead time, around which the tines are withdrawn behind the downstream stop. The device is thus able to operate folding machines, which works at smaller speed carton tubes with higher speed.

Besonders gutes Abstapeln wird erreicht, wenn der eine Anschlag, vorzugsweise der stromaufwärts gelegene Anschlag als Rüttler ausgebildet ist. Dies ermöglicht auch eine nachträgliche Justage der Faltschachtelschläuche, wenn die Naht geklebt ist und der Kleber noch nicht vollständig erkaltet ist.Particularly good destacking is achieved when the one stop, preferably the upstream stop is designed as a vibrator. This also allows a subsequent adjustment of the carton tubes when the seam is glued and the adhesive is not yet fully cooled.

Ein zuverlässiger Abtransport der fertigen Stapel kann erreicht werden, wenn die Ausgabetransporteinrichtung mehrere parallel nebeneinander verlaufende Transportbänder umfasst. Das Wegführen des Stapels vom Hubtisch wird verbessert, wenn dieser ebenfalls fächerartig gestaltet ist, und wenigstens eines der Transportbänder bis in eine Lücke zwischen den Zinken des Hubtisches reicht.A reliable removal of the finished stack can be achieved if the output transport device comprises a plurality of parallel conveyor belts running side by side. The removal of the stack from the lifting table is improved if it is also fan-shaped, and at least one of the conveyor belts extends into a gap between the tines of the lifting table.

Dadurch kann ein niedrig bauender Hubtisch erreicht werden, der keine Rollen aufweist und es wird auch kein Schieber benötigt, um den Stapel vom Hubtisch herunter zu schieben.As a result, a low-lift table can be achieved, which has no rollers and it is also no slider needed to push the stack from the lift table down.

Weitere Transportbänder können seitlich neben dem Hubtisch verlaufen und bis zu dessen stromaufwärts gelegener Kante reichen.Further conveyor belts can run laterally next to the lifting table and extend to its upstream edge.

Die Leichtgängigkeit der Transportbänder und die Wartungsfreiheit lässt sich verbessern, wenn die Transportbänder im Bereich des jeweiligen Arbeitstrumms durch Rollen unterstützt werden. Hierdurch werden gleitende Auflagen vermieden.The smooth running of the conveyor belts and the freedom from maintenance can be improved if the conveyor belts in the area of the respective working drums by rolling get supported. As a result, sliding conditions are avoided.

Das Zuhalten des Stapels und damit das notwendige Nachpressen auch der oberen Faltschachtelschläuche wird erreicht, indem der fertige Stapel in eine Niederhaltereinrichtung eingeklemmt wird. Diese ist zweckmäßigerweise auch mit endlosen Transportbändern ausgestattet, die auf der Oberseite des Stapels wirken. Die Arbeitstrumme dieser Transportbänder laufen parallel zu der Fläche, die die Arbeitstrumme der Transportbänder gebildet werden, auf denen die Stapel ruhen.The locking of the stack and thus the necessary repressing of the upper carton tubes is achieved by the finished stack is clamped in a hold-down device. This is expediently also equipped with endless conveyor belts, which act on the top of the stack. The working strand of these conveyor belts run parallel to the surface which forms the working streams of the conveyor belts on which the stacks rest.

Im übrigen sind Weiterbildungen der Erfindung Gegenstand von Unteransprüchen. Dabei sollen auch solche Kombinationen als beansprucht angesehen werden, auf die kein ausdrückliches Ausführungsbeispiel gerichtet ist. In der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung dargestellt. Es zeigen:

Fig. 1
eine Vorrichtung zum Abstapeln von Faltschachtelschläuchen in einer stark schematisierten Seitenansicht und
Fig. 2-10
die weiter vereinfachte Vorrichtung nach Fig. 1 in den einzelnen Funktionsstufen und
Fig. 11
die Vorrichtung nach Fig. 1 für besonders große Faltschachtelschläuche bzw. Faltschachtelschläuche mit großer Rücksprungkraft.
Moreover, further developments of the invention are the subject of dependent claims. In this case, such combinations are to be regarded as claimed, to which no express embodiment is directed. In the drawing, an embodiment of the object of the invention is shown. Show it:
Fig. 1
a device for stacking Faltschachtelschläuchen in a highly schematic side view and
Fig. 2-10
the further simplified device of FIG. 1 in the individual functional stages and
Fig. 11
the apparatus of FIG. 1 for particularly large Faltschachtelschläuche or Faltschachtelschläuche with high return force.

Fig. 1 zeigt eine Vorrichtung 1 zum Bilden von Stapeln 2 aus flachen Produkten 3 beispielsweise Faltschachtelzuschnitten oder Faltschachtelschläuchen. Die Darstellung ist stark schematisiert, wobei nur solche Teile veranschaulicht sind, die für das Verständnis wesentlich sind.Fig. 1 shows an apparatus 1 for forming stacks 2 of flat products 3, for example, folding carton blanks or Faltschachtelschläuchen. The illustration is highly schematic, illustrating only those parts which are essential to understanding.

Die Produkte 3 laufen bezogen auf Fig. 1 von rechts nach links und kommen beispielsweise aus einer Faltmaschine, in der die Faltschachtelzuschnitte zu Faltschachtelschläuchen geformt werden, die längs der Naht geklebt oder geheftet werden. Somit ist in Fig. 1 eine Richtung nach rechts eine stromaufwärts gelegene Richtung bezogen auf den Strom der Produkte 3 und eine nach links verlaufende Bewegung eine stromabwärts gerichtete Bewegung.Referring to Figure 1, the products 3 run from right to left and come, for example, from a folding machine in which the carton blanks are formed into carton tubes which are glued or stapled along the seam. Thus, in Fig. 1, a rightward direction is an upstream direction with respect to the flow of products 3 and a leftward movement is a downstream movement.

Zu der Vorrichtung 1 gehört ein Maschinengestell 4, das stark schematisiert und aufgeschnitten veranschaulicht ist. Das Maschinengestell 4 weist seitliche Pfeiler 5 auf, die über ein Querjoch 6 miteinander verbunden sind. Die Pfeiler 5 stehen auf einem Bodenfundament 7, auf dem ebenfalls rückwärtige Tragpfeiler 8 aufgeständert sind. Zwischen den rückwertigen Tragständern 8 und den Pfeilern 5 erstreckt sich ein oberes Maschinenjoch 9, auf dem ein Untergestellrahmen 11 befestigt ist.To the device 1 includes a machine frame 4, which is highly schematic and cut shows. The machine frame 4 has lateral pillars 5, which are connected to one another via a transverse yoke 6. The pillars 5 are on a ground foundation 7, on the rear support pillars 8 are also elevated. Between the rückwertigen support posts 8 and the pillars 5, an upper machine yoke 9, on which a frame frame 11 is attached extends.

In dem Maschinengestell 4 ist stromabwärts der beiden Pfeiler 5 ein Stapelschacht 12 ausgebildet, der seitlich offen ist und der in Transportrichtung also stromabwärts von einem Anschlag 13 und stromaufwärts von einem Anschlag 14 begrenzt ist.In the machine frame 4, a stacking shaft 12 is formed downstream of the two pillars 5, which is open at the side and in the transport direction so downstream of a stop 13 and upstream of a stop 14 is limited.

Der Anschlag 14 besteht aus einer im wesentlichen Ebenen Platte, die mit vertikalen Schlitzen versehen ist. Die Platte 14 ist an einer Exzenterwelle 15 befestigt, die zwischen den beiden Pfeilern 5 drehbar gelagert ist. Auf diese Weise dient der stromaufwärts gelegene Anschlag 14 als Rüttler. Der Anschlag 13 ist hingegen im Wesentlichen währen des Betriebs feststehend, kann jedoch in seinem Abstand zu dem Anschlag 14 eingestellt werden.The stop 14 consists of a substantially plane plate which is provided with vertical slots. The plate 14 is fixed to an eccentric shaft 15 which between the two pillars 5 is rotatably mounted. In this way, the upstream stop 14 serves as a vibrator. The stop 13, however, is substantially fixed during operation, but can be adjusted in its distance from the stop 14.

Sowohl der Anschlag 14 als auch der Anschlag 13 definieren Ebenen, die zueinander parallel sind.Both stop 14 and stop 13 define planes that are parallel to one another.

Um die Produkte 3 in den Stapelschacht 12 zu transportieren, ist eine Transporteinrichtung 16 vorgesehen, die zwei Transportrollen 17 und 18 umfasst. Die beiden Transportrollen 17 und 18 sind achsparallel horizontal zwischen den beiden Pfeilern 5 gelagert und drehangetrieben.In order to transport the products 3 into the stacking shaft 12, a transport device 16 is provided which comprises two transport rollers 17 and 18. The two transport rollers 17 and 18 are axially parallel horizontally mounted between the two pillars 5 and rotationally driven.

Ihre Umfangsgeschwindigkeit ist größer als es der Transportgeschwindigkeit entspricht, mit der die Produkte 3 von rechts kommend herangeführt werden.Their peripheral speed is greater than corresponds to the transport speed at which the products 3 are brought in from the right.

Die Produkte 3 gelangen in einem kontinuierlichen Strom zu der Transporteinrichtung 16 und sind in dem Strom voneinander beabstandet. Zwischen den Rollen 17 und 18 werden sie mit hoher Geschwindigkeit in den Stapelschacht 12 eingeschossen, und fallen in diesem quer liegend nach unten, wie dies nachstehend noch im einzelnen erläutert ist.The products 3 arrive in a continuous stream to the conveyor 16 and are spaced from each other in the stream. Between the rollers 17 and 18, they are shot at high speed in the stacking shaft 12, and fall in this lying transversely downwards, as will be explained in detail below.

Im unteren Bereich des Stapelschachtes 12 befindet sich ein Hubtisch 19, der mit Hilfe von Lenkern 21 und 22 zwischen den beiden in Fig. 1 erkennbaren Lagen hin und her bewegt werden kann. Der Hubtisch 19 ist nach Art eines Rechens ausgebildet, und weist mehrere parallel zur Transportrichtung sich erstreckende Zinken auf, die über ein Versteifungselement 24 miteinander verbunden sind. Die Bewegung des Hubtisches 19, erfolgt im wesentlichen parallel zu den Flächen, die durch die Anschläge 13 und 14 gebildet sind. Der Anschlag 13 ist ebenfalls als Rechen ausgebildet und besteht aus mehreren im wesentlichen vertikal nach unten hängenden Zinken, zwischen denen vertikal verlaufende und nach unten offene Schlitze enthalten sind.In the lower area of the stacking shaft 12 is a lifting table 19, which can be moved back and forth between the two in Fig. 1 recognizable layers by means of links 21 and 22. The lifting table 19 is designed in the manner of a rake, and has a plurality of parallel to the transport direction extending tines, which are connected to each other via a stiffening element 24. The movement the lifting table 19, takes place substantially parallel to the surfaces which are formed by the stops 13 and 14. The stopper 13 is also designed as a rake and consists of a plurality of substantially vertically downwardly hanging tines, between which vertically extending and downwardly open slots are included.

Im Bereich der oberen Endlage des Hubtisches 19 sind am besten in Fig. 10 erkennbare erste temporäre Auflagemittel 25 und 26 vorgesehen. Die Auflagemittel 25 sind zwei in Längsrichtung bewegliche Finger, die mit Hilfe eines Arbeitszylinders 27 in das Lichtraumprofil des Stapelschachtes 12 vor und aus diesem zurückgezogen werden können. Die beiden Finger 25 führen durch entsprechende Öffnungen in dem stromaufwärts gelegenen Anschlag 14 hindurch und befinden sich unterhalb der unteren Transportrolle 16. Die beiden Finger 25 haben einen solchen Abstand voneinander, dass sie den kleinsten zu verarbeitenden Faltschachtelschlauch seitlich unterstützen können. Für den Fall, dass zwei derartige Finger nicht ausreichen, wenn sehr breite Zuschnitte gestapelt werden sollen, können zusätzlich zu diesen beiden Fingern nach außen hin noch weitere Finger 25 angeordnet werden. Sämtliche Finger 26 werden synchron angetrieben und gleichzeitig in den Stapelschacht 12 vorgeschoben oder zurückgezogen.In the area of the upper end position of the lifting table 19, recognizable first temporary support means 25 and 26 are best provided in FIG. The support means 25 are two longitudinally movable fingers, which can be withdrawn by means of a working cylinder 27 in the clearance space of the stacking shaft 12 before and out of this. The two fingers 25 pass through corresponding openings in the upstream stop 14 and are located below the lower transport roller 16. The two fingers 25 are spaced apart such that they can laterally support the smallest folding carton tube to be processed. In the event that two such fingers are not sufficient when very wide blanks to be stacked, in addition to these two fingers to the outside even more fingers 25 can be arranged. All fingers 26 are driven synchronously and at the same time advanced or withdrawn into the stacking shaft 12.

Unterhalb des stromabwärtsgelegenen Anschlags 13 befinden sich ebenfalls Finger 26, die ebenfalls in das Lichtraumprofil des Stapelschachtes 12 vor und aus diesem zurückgezogen werden können.Below the downstream stop 13 are also fingers 26, which can also be withdrawn in the clearance space of the stacking shaft 12 in front of and out of this.

Der Übersichtlichkeit halber sind die Antriebseinrichtungen für die Finger 26 nicht gezeigt.For clarity, the drive means for the fingers 26 are not shown.

Die Finger 25, 26 definieren eine Ebene, die rechtwinklig zu dem Anschlag 14 bzw. dem Anschlag 13 verläuft, und die quer zur Transportrichtung nicht geneigt ist.The fingers 25, 26 define a plane that is perpendicular to the stop 14 and the stop 13 and that is not inclined transversely to the transport direction.

In dem Stapelschacht ist ein zweites temporäres Auflagemittel wirksam, das ebenfalls als Rechen regelmäßig von einander beabstandeten Zinken 28 ausgebildet ist.In the stacking shaft, a second temporary support means is effective, which is also designed as a rake regularly spaced tines 28.

Die Zinken 28 sitzen an einem Querbalken, und ragen je nach Betriebsstellung durch die Schlitze in dem stromabwärtsgelegenen Anschlag 13 in das Lichtraumprofil des Stapelschachtes 12.The prongs 28 are seated on a crossbar, and project depending on the operating position through the slots in the downstream stop 13 in the clearance space of the stacking shaft 12th

Auf der Rückseite des stromabwärtsgelegenen Anschlags 13 befinden sich zwei zueinander parallel Führungsschienen 31, von denen aus Darstellungsgründen lediglich eine erkennbar ist.On the back of the downstream stop 13 are two mutually parallel guide rails 31, of which for illustrative purposes, only one is recognizable.

Die beiden Führungsschienen 31 sitzen unten an einem Zwischenrahmen 32 und dienen als Führungsschienen für einen Führungsschlitten 33, an dem der Balken 29 unterhalb der Schienen geführt ist. Mit Hilfe einer nicht gezeigten Antriebseinrichtung kann der Schlitten 33 mittels nicht dargestellter Zahnriemen längs den beiden Führungsschienen 31 bewegt werden. Der Zwischenrahmen 32 ist mittels einer Achse 35, die an nicht gezeigten Gestellteilen befestigt ist, schwenkbar in dem Maschinegestell 4 gelagert. Die Achse 35 verläuft unterhalb der Führungsschienen 31.The two guide rails 31 sit at the bottom of an intermediate frame 32 and serve as guide rails for a guide carriage 33, on which the beam 29 is guided below the rails. With the aid of a drive device, not shown, the carriage 33 can be moved along the two guide rails 31 by means of toothed belts (not shown). The intermediate frame 32 is pivotally mounted in the machine frame 4 by means of an axle 35 which is fixed to frame parts, not shown. The axis 35 extends below the guide rails 31st

Die Achse 35 verläuft horizontal und quer zum Transportweg der Produkte 3. Das gegenüberliegende Ende des Zwischenrahmens 32 ist über eine Lenkeranordnung 37 in gestellfesten Vertikalen Führungsschienen 38 geführt. Auch hier ist der Übersichtlichkeit halber die Antriebseinrichtung für die Lenker 37 und einen zugehörigen in den Führungsschienen 38 laufenden Schlitten 41 nicht gezeigt.The axis 35 extends horizontally and transversely to the transport path of the products 3. The opposite end of the intermediate frame 32 is guided via a link assembly 37 in frame-fixed vertical guide rails 38. Also Here, for reasons of clarity, the drive device for the links 37 and an associated slide 41 running in the guide rails 38 are not shown.

Zur Vertikalbewegung des Schlittens 41 kommen beispielsweise Schraubspindeltriebe in Fragen, während die Längsbewegung des Schlittens 33 über endlose Zahnriemen bewerkstelligt wird.For vertical movement of the carriage 41, for example, screw spindle drives come into question, while the longitudinal movement of the carriage 33 is accomplished via endless timing belt.

Die Zinken 28 des zweiten temporären Auflagemittels können auf diese Weise hinter den stromabwärtsgelegenen Anschlag 13 zurückgezogen werden, und sie können außerdem eine Schwenkbewegung bzgl. der Achse 35 vollführen.The tines 28 of the second temporary support means can be withdrawn in this way behind the downstream stop 13, and they can also perform a pivoting movement with respect to the axis 35.

Auf der Höhe der unteren Stellung des Hubtisches 19 beginnt bei den Pfeilern 5 eine Transporteinrichtung 42, die mehrere parallel nebeneinander verlaufenden endlose Transportbänder in Gestalt von Flachriemen 43 umfasst. Die Riemen 23 sind längs des Transportweges durch Transportrollen 44 unterstützt, die drehbar in dem Maschinengestell gelagert sind. Auf diese Weise bilden die Transportbänder 43 Arbeitstrumme, die sich längs einer Ebene erstrecken, die senkrecht zu Ebenen verläuft, die durch die beiden Anschläge 13 und 14 definiert sind. Die Ebene die durch die Arbeitstrumme der Transportbänder 43 definiert ist, steigt ausgehend von dem Pfeiler 5 an. Der Abstand zwischen den Transportbändern 43 und die Lagerung ist so gewählt, dass sie zum Teil zwischen die Zinken des Hubtisches 19 hineingreifen oder an ihm seitlich vorbeilaufen, so dass eine Kollision vermieden wird.At the height of the lower position of the lifting table 19 begins at the pillars 5, a transport device 42 which includes a plurality of parallel adjacent endless conveyor belts in the form of flat belt 43. The belts 23 are supported along the transport path by transport rollers 44, which are rotatably mounted in the machine frame. In this way, the conveyor belts 43 form working streams that extend along a plane that is perpendicular to planes defined by the two stops 13 and 14. The plane defined by the working flow of the conveyor belts 43 rises from the pillar 5. The distance between the conveyor belts 43 and the bearing is chosen so that they partially reach in between the tines of the lifting table 19 or pass past it laterally, so that a collision is avoided.

Oberhalb der Transporteinrichtung 42 befindet sich eine Niederhaltereinrichtung 45, die von drei parallelen nebeneinander verlaufenden Endlosbändern 46 gebildet ist. Den Abstand, den die Endlosbänder voneinander haben, ist so gewählt, dass zwischen ihnen die Zinken 28 Platz finden, wobei ein Transportband 46 in der Mitte der Gruppe von Zinken 28 verläuft. Die hierfür notwendige Umlenkrolle ist neben der Rückseite des Anschlags 13 hinter einer entsprechenden Zinke von diesem gelagert.Above the transport device 42 is a hold-down device 45, which is parallel to three is formed adjacent to each other endless belts 46. The distance that the endless belts have from each other is chosen so that between them the tines 28 find place, with a conveyor belt 46 in the middle of the group of tines 28 runs. The necessary deflection pulley is stored next to the back of the stopper 13 behind a corresponding prong of this.

Die Niederhaltereinrichtung 45 beginnt knapp hinter dem stromabwärts gelegenen Anschlag 13 und reicht wie gezeigt etwa bis zum Ende der Transporteinrichtung 42. Die Unterkante des Anschlags 13 fluchtet mit der Ebene, die durch die Arbeitstrume der Transportbänder 46 definiert ist Zwischen der Niederhaltereinrichtung 45 und der Transporteinrichtung 42 wird ein Kanal definiert, der am Anfang und am Ende dieselbe lichte Höhe aufweist.The hold-down device 45 starts just behind the downstream stop 13 and extends as shown approximately to the end of the transport device 42. The lower edge of the stop 13 is aligned with the plane defined by the working volume of the conveyor belts 46 between the hold-down device 45 and the transport device 42 a channel is defined which has the same clear height at the beginning and at the end.

Die Lagerungsrollen für die Transportbänder 43 und 46, sind in der Fig. schematisch angedeutet, im übrigen jedoch nicht weiter beschrieben, da Art und Weise der Lagerung dem Fachmann geläufig ist und im übrigen die Art und Weise der Lagerung für das weitere Verständnis der Erfindung nicht von Bedeutung ist.The storage rollers for the conveyor belts 43 and 46 are schematically indicated in the figure, but otherwise not described, since the manner of storage is known to the expert and otherwise the manner of storage for the further understanding of the invention is important.

Die Funktionsweise der Stapelvorrichtung wird nunmehr anhand der Figuren 2 bis 10 erläutert.The mode of operation of the stacking device will now be explained with reference to FIGS. 2 to 10.

Der Abstand zwischen den beiden Anschlägen 13 und 14 ist durch Justage der Lage des Anschlags 13 eingestellt. Der Abstand ist so gewählt, dass die Produkte 3 im Wesentlichen spielfrei dazwischen passen, wenn sie auf einem der Auflagemittel bzw. dem Hubtisch 19 aufliegen.The distance between the two stops 13 and 14 is adjusted by adjusting the position of the stopper 13. The distance is chosen so that the products 3 fit substantially backlash between them when they rest on one of the support means and the lifting table 19.

In der Ausgangslage nach Fig. 2 ist der Hubtisch 19 in die oberste Stellung angehoben. Die Zinken 28 sind in das Lichtraumprofil des Stapelschachtes 12 vorgeschoben, weil die Führungsschienen 31 in die unterste Lage geschwenkt sind. In dieser Stellung verläuft die Unterseite der Zinken 28 in Verlängerung derjenigen Fläche, die durch die Arbeitstrumme der Förderbänder 46 der Niederhaltereinrichtung 45 definiert ist. Um Kollisionen weitgehend zu vermeiden, fluchten in dieser Stellung die Zinken 28 mit den entsprechenden Lücken in dem Tisch 19.In the starting position according to FIG. 2, the lifting table 19 is raised to the uppermost position. The prongs 28 are advanced into the clearance space of the stacking shaft 12 because the guide rails 31 are pivoted to the lowermost position. In this position, the underside of the tines 28 extends in extension of that area which is defined by the working flow of the conveyor belts 46 of the hold-down device 45. In order to avoid collisions as far as possible, in this position the tines 28 are aligned with the corresponding gaps in the table 19.

Die Finger 25 und 26 der ersten Auflagemittel sind in das Lichtraumprofil vorgeschoben und zwar so, dass sie weder mit den Zinken 28 noch mit den Hubtisch 19 kollidieren.The fingers 25 and 26 of the first support means are advanced into the clearance space such that they do not collide with either the tines 28 or the lift table 19.

Wenn in dieser Stellung gemäß Fig. 2 der erste Faltschachtelschlauch 3 eingeschossen wird, kommt er auf der Oberseite der Zinken 28 zu liegen. Weitere Faltschachtelschläuche lagern sich auf dem jeweils darunter befindlichen in dem Stapelschacht 12 bereits befindlichen Stapel ab, wie dies Fig. 3 zeigt. Der Stapel wird zunächst noch von der Oberseite der Zinken 28 getragen.If in this position shown in FIG. 2, the first carton tube 3 is injected, it comes to rest on the top of the tines 28. Further folding carton hoses are deposited on the respective stack already located in the stacking shaft 12, as shown in FIG. 3. The stack is initially still supported by the top of the tines 28.

Nachdem einige wenige Faltschachtelschläuche 3 eingetroffen sind, wird wie Fig. 4 zeigt, der Schlitten 33 längs der Führungsschienen 31 zurückgezogen, soweit bis die freien Enden der Zinken 28 vollständig aus dem Stapelschacht 12 herausgezogen sind und hinter dem Anschlag 13 verschwunden sind. Der bereits entstandene niedrige Stapel aus 3 oder 4 übereinander liegenden Faltschachtelschläuchen fällt während des Herausziehen der Zinken 28 aus dem Stapelschacht 12 auf die Finger 25 und 26. Diese werden ebenfalls zurückgezogen, so dass der Stapel, wie Fig. 5 zeigt, nunmehr auf der Oberseite des Hubtisches 19 zu liegen kommt.After a few Faltschachtelschläuche 3 have arrived, as shown in FIG. 4, the carriage 33 along the guide rails 31 retracted, as far as the free ends of the prongs 28 are completely pulled out of the stacking shaft 12 and behind the stop 13 have disappeared. The already formed low stack of 3 or 4 superimposed Faltschachtelschläuchen falls during withdrawal of the tines 28 from the stacking shaft 12 on the fingers 25 and 26. These are also withdrawn, so that the stack, as shown in FIG. 5, now on the top of the lifting table 19 comes to rest.

In Fig. 4 hat das Anheben der Zinken 28 bereits begonnen. Sie sind ein wenig nach oben gestellt, d.h. sie verlaufen nicht mehr exakt parallel zu der Ebene, entsprechend der Arbeitstrumme der Endlosbänder 46.In Fig. 4, the lifting of the tines 28 has already begun. They are a little bit up, i. they no longer run exactly parallel to the plane, corresponding to the working flow of the endless belts 46.

Während sich das Abstapeln der Faltschachtelschläuche auf dem Hubtisch 19 vollzieht, werden die Führungsschienen 31 um die Achse 35 nach oben geschwenkt in die obere Endlage. Hierzu werden die Führungsschienen 31 über den Schlitten 41, der in den Führungsschienen 38 geführt und entsprechend angetrieben ist, an ihrem den Anschlag 13 benachbarten Ende angehoben.While the stacking of Faltschachtelschläuche takes place on the lifting table 19, the guide rails 31 are pivoted about the axis 35 upwards in the upper end position. For this purpose, the guide rails 31 via the carriage 41, which is guided in the guide rails 38 and driven accordingly, raised at its stop 13 adjacent the end.

Nach Erreichen der oberen Lage, wird der Schwenkantrieb für die Führungsschienen 31 stillgesetzt und statt dessen der Antrieb für den Schlitten 33 in Gang. Die Zinken 28 werden durch die Lücken in dem Anschlag 13 in den Stapelschacht 12 vorgeschoben. In der vorgeschobenen Stellung ist ihre Unterseite deutlich oberhalb jener Ebene, längs derer, die Faltschachtelschläuche 3 in den Stapelschacht 12 eingeschossen werden, wie dies Fig. 5 erkennen lässt.After reaching the upper position, the pivot drive for the guide rails 31 is stopped and instead the drive for the carriage 33 in progress. The prongs 28 are advanced through the gaps in the stop 13 into the stacking chute 12. In the advanced position, its underside is clearly above that plane along which the folding carton tubes 3 are injected into the stacking shaft 12, as shown in FIG. 5.

Sobald die gewünschte Anzahl von Faltschachtelschläuchen in dem Stapel 2 erreicht ist, wird der Schwenkantrieb für die Führungsschienen 31 im Sinne des Absenkens in Gang gesetzt. Dabei laufen die Zinken 28 im Gleichstrom mit den Herunterfallenden Faltschachtelschläuchen 3 nach unten durch den Stapelschacht 12 hindurch.As soon as the desired number of folding carton tubes is reached in the stack 2, the pivot drive for the guide rails 31 is set in motion in the sense of lowering. The tines 28 run in cocurrent with the falling Faltschachtelschläuchen 3 down through the stacking shaft 12 therethrough.

Während des Übergangs von Fig. 5 nach Fig. 6 wurde kontinuierlich der Hubtisch 19 abgesenkt, in dem Maße, in dem der Stapel 2 höher geworden ist, damit die Oberkante d.h. der Kopf des Stapels etwa immer im selben Abstand von der Einschussebene bliebt, so dass angenähert gleiche Fallverhältnisse für die in den Stapelschacht 12 gelangenden Faltschachtelschläuche vorliegen. Während des Abstapelns wird gleichzeitig über die Exzenterwelle 15 der Anschlag 14 periodisch gegen den Stapel bewegt, um den Stapel zusammen zu rütteln und Verzugsfehler im Falle von verklebten Nähten an den Faltschachtelzuschnitten noch ein wenig zu korrigieren.During the transition from FIG. 5 to FIG. 6, the lifting table 19 was continuously lowered, to the extent in FIG the stack 2 has become higher, so that the top edge ie the head of the stack remains about always the same distance from the Einschussebene, so that there are approximately the same case conditions for the reaching into the stacking shaft 12 carton hoses. During stacking, the stopper 14 is simultaneously moved over the eccentric shaft 15 periodically against the stack to shake the stack together and to correct distortion errors in the case of glued seams on the folding box blanks a little.

Die unteren Lagen der Zuschnitte werden jeweils durch die oberen Lagen geschlossen gehalten. Nur die oberen Lagen können aufgrund der Rücksprungkraft der Wellpappe etwas aufspringen.The lower layers of the blanks are kept closed by the upper layers. Only the upper layers can bounce slightly due to the return force of the corrugated board.

Das Absenken der Zinken 28 in dem Stapelschacht 12, geschieht synchronisiert, so dass die Spitzen der Zinken 28, die Einschussebene an den Transportrollen in dem Augenblick passieren, in dem gerade kein Faltschachtelschlauch 3 eingeschlossen wird.The lowering of the tines 28 in the stacking shaft 12, is synchronized, so that the tips of the tines 28, the Einschussebene to the transport rollers happen at the moment in which no carton tube 3 is included.

Nachdem die Zinken 28 auf den Stapelkopf abgesenkt sind und diesen zusammendrücken, werden die Finger 25 und 26 vorgeschoben, wie dies Fig. 7 erkennen lässt. In Fig. 7 ist der Stapel zusammengedrückt, indem von oben mit Kraft die Zinken 28 aufgedrückt werden. Damit wird Platz geschaffen, um die Finger 25 und 26 in den Stapelschacht 12 vorzuschieben.After the prongs 28 are lowered onto the stack head and compress it, the fingers 25 and 26 are advanced as shown in FIG. 7. In Fig. 7, the stack is compressed by the tines 28 are pressed from above with force. This space is created to advance the fingers 25 and 26 in the stacking shaft 12.

Sobald die Zinken 28 auf dem Stapel 2 ruhen, erfolgt zwangsläufig das weitere Abstapeln auf der Oberseite der Zinken 28, die den darunter befindlichen Stapel 2 zusammengedrückt halten. Nunmehr wird die Transporteinrichtung für den Schlitten 33 in Gang gesetzt, um die Zinken 28 in Stromrichtung zu bewegen. Gleichzeitig werden die Transportbänder 43 der Transporteinrichtung 42 mit eingeschaltet und auch die Transportbänder 46 der Niederhaltereinrichtung 45. Der mit Hilfe der Zinken 28 zusammengedrückte Stapel 2 wird so in den Kanal zwischen der Niederhaltereinrichtung 45 und der Transporteinrichtung 42 eingefädelt und in Transportrichtung befördert, wie dies Fig. 9 zeigt. Dabei laufen alle Teile, die mit dem Stapel 2 in Eingriff stehen, mit der selben Lineargeschwindigkeit.As soon as the prongs 28 rest on the stack 2, the further destacking on the top of the prongs 28 inevitably takes place, which compresses the stack 2 underneath hold. Now, the transport means for the carriage 33 is set in motion to move the tines 28 in the flow direction. At the same time, the conveyor belts 43 of the transport device 42 are turned on and also the conveyor belts 46 of the hold-down device 45. The compressed by means of the tines 28 stack 2 is threaded into the channel between the hold-down device 45 and the transport device 42 and transported in the transport direction, as shown 9 shows. In this case, all parts which are in engagement with the stack 2, run at the same linear speed.

Nachdem der Stapel 2 gemäß Fig. 10 vollständig eingefädelt ist, was spätestens dann erreicht wird, wenn der Schlitten 33 seine von dem Anschlag 13 am weitesten entfernt liegende Stellung erreicht hat, beginnt der Zyklus bei Fig. 4 erneut.After the stack 2 has been completely threaded according to FIG. 10, which is reached at the latest when the carriage 33 has reached its position furthest from the stop 13, the cycle in FIG. 4 starts again.

Während es Wegführens des vollständigen Stapels 2 erfolgt das Abstapeln auf den Fingern 25 und 26, so dass Zeit geschaffen wird, um den jetzt freien Hubtisch 19 wieder in die Aufnahmestellung nach oben zu bewegen. Damit steht im Zusammenwirken zwischen dem Abstapeln auf den Fingern 25 und 26 sowie auf dem Hubtisch 19 genügend Zeit zur Verfügung um die Zinken 28 über ihren verhältnismäßig langen Weg wieder in die Startposition gemäß Fig. 5 zu bringen.While it is leading away the complete stack 2, the stacking is done on the fingers 25 and 26, so that time is created to move the now free lift table 19 back into the receiving position upwards. This is sufficient time in cooperation between the stacking on the fingers 25 and 26 and on the lifting table 19 to bring the tines 28 on their relatively long way back to the starting position shown in FIG. 5.

Die Finger 25 und 26 können verhältnismäßig schwach dimensioniert sein, da der Stapel, den sie tragen müssen, bis der Hubtisch wieder in Position steht, verhältnismäßig klein und damit leicht ist.The fingers 25 and 26 may be dimensioned relatively weak, since the stack they have to carry until the lift table is in position again, is relatively small and therefore light.

Der wesentliche Vorteil der erfindungsgemäßen Anordnung besteht darin, dass die Zinken eine Schwenkbewegung bezüglich der Achse 35 vollführen. Dadurch vereinfacht sich die Lagerung wesentlich. Außerdem sind der Schwenkantrieb und der horizontale Antrieb mechanisch voneinander entkoppelt. Auf diese Weise kann der Längshub, den die Zinken 28 parallel zur Fläche des Hubtisches 19 vollführen auf das Maß begrenzt werden, das notwendig ist, um sie gerade hinter den Anschlag 13 zurückzuziehen. Sie brauchen bei kleinen Faltschachtelschläuchen 3 nicht den selben Hub zu durchlaufen wie bei großen Zuschnitten. Auf diese Weise kann die Faltmaschine, die die Faltschachtelzuschnitten 3 erzeugt, bei kleinen Zuschnitten wesentlich schneller laufen als bei großen Zuschnitten, so dass, obwohl die Taktzeit durch die Struktur der Faltriemen vorgegeben ist, ein höherer Durchsatz zustande kommt.The main advantage of the arrangement according to the invention is that the tines perform a pivotal movement with respect to the axis 35. This significantly simplifies storage. In addition, the rotary actuator and the horizontal drive are mechanically decoupled from each other. In this way, the longitudinal stroke, the tines 28 perform parallel to the surface of the lifting table 19 can be limited to the extent necessary to withdraw them just behind the stop 13. You do not need to go through the same stroke with small folding carton hoses 3 as with large blanks. In this way, the folding machine that produces the folding box blanks 3 can run much faster with small blanks than with large blanks, so that although the cycle time is dictated by the structure of the folding strap, a higher throughput is achieved.

Soweit keine Dimensionierungsangaben für Längen und Breiten gemacht wurden, ergeben sie sich aus der obigen Funktionsbeschreibung in selbstverständlicher Weise.As far as dimensioning information for lengths and widths have not been made, they result from the above functional description in a natural way.

Bei Faltschachtelschläuchen, die in Transportrichtung gesehen sehr große Abmessungen haben, kann es nach dem Einschießen in den Stapelschacht 12 zu einer vorzeitigen Berührung der vorauseilenden Kante des eingeschossenen Faltschachtelschlauches mit der Oberseite des bereits gebildeten Stapels kommen. Die Vorderkante neigt dann dazu, unter Umständen sich zu verhaken, womit der Karton schräg in dem Schacht 12 liegen bleibt.When folding carton hoses, seen in the transport direction have very large dimensions, it may come after shooting into the stacking shaft 12 to premature contact of the leading edge of the inserted folding carton tube with the top of the already formed stack. The leading edge then tends to snag under some circumstances, causing the carton to rest obliquely in the well 12.

Um diesen Effekt zu vermeiden kann, gemäß Fig. 11, das obere Joch 9 oder der Unterrahmen 11 etwas abgesenkt werden, wodurch eine größere Tiefe des Stapelschachtes erreicht wird. An den Pfeilern 5 ist dementsprechend ein weiterer Satz von Fingern 25' vorgesehen, die unterhalb der Finger 25 liegen, und zwar um die Höhe der zusätzlichen Stapelschachttiefe.In order to avoid this effect, as shown in FIG. 11, the upper yoke 9 or the lower frame 11 can be lowered slightly, whereby a greater depth of the stacking shaft is achieved. On the pillars 5 is accordingly another Set of fingers 25 ', which are below the fingers 25, by the amount of additional stack shaft depth.

Beim Absenken wird entsprechend der stromabwärtsgelegene Anschlag 13 und die Niederhaltereinrichtung 45 entsprechend mit abgesenkt. Da die Finger 26 an dem stromabwärtsgelegenen Rechen 13 befestigt sind, werden hier zusätzliche Elemente eingespart.When lowering is correspondingly lowered in accordance with the downstream stop 13 and the hold-down device 45. Since the fingers 26 are attached to the downstream rake 13, additional elements are saved here.

Eine Vorrichtung zum Abstapeln von Faltschachtelschläuchen weist einen höhenverstellbaren Hubtisch auf. Oberhalb des Hubtisches befinden sich erste temporäre Auflagemittel, die aus dem Stapelschacht herausgezogen oder in diesen vorgeschoben werden können. Ein weiterer Satz von temporären Auflagemitteln, kann sowohl aus dem Stapelschacht herausgezogen werden, als im Stapelschacht abwärts bewegt werden. Die zweiten Auflagemittel dienen gleichzeitig dazu einen fertigen Stapel zusammen zu drücken um ihn zwischen einer Transportvorrichtung einer Niederhaltereinrichtung einfädeln zu können. Währen der Hubtisch zusammen mit der zweiten Auflageinrichtung mit dem Wegführen des Stapels beschäftigt ist, sorgen die ersten temporären Auflagemittel dafür, dass unterbrechungsfrei dennoch in dem Stapelschacht abgestapelt werden kann.A device for destacking folding box hoses has a height-adjustable lifting table. Above the lift table are first temporary support means that can be pulled out of the stacking shaft or advanced into this. Another set of temporary support means may be withdrawn from the stacking well or moved down the stacking well. The second support means serve simultaneously to push a finished stack together to thread it between a transport device of a hold-down device can. While the lift table is engaged in the removal of the stack along with the second support means, the first temporary support means ensure that it can still be unstacked in the stack shaft without interruption.

Claims (37)

  1. Device for de-stacking flat products into stacks, in particular folding box blanks (3) or folding box tubes, which advance in a stream one after the other, with a machine frame (4),
    with a transport means (16), which is arranged upstream in the machine frame (4),
    with a stacking shaft (12), which is arranged downstream of the transport means (16) in the machine frame (4) and which is restricted upstream and downstream by a respective stop (13, 14),
    with an elevating platform (19), which is disposed in the clearance space of the stacking shaft (12) to be movable up and down in the machine frame (4),
    with first temporary supporting elements (25, 26), which are disposed in the machine frame (4) to be movable back and forth between an active position, in which they project into the clearance space of the stacking shaft (12), and an inactive position, in which they are retracted out of the clearance space,
    with an initial transport means (42), which begins in the clearance space of the stacking shaft (12) and extends downstream in the machine frame (4),
    with a hold-down means (45), which begins outside the clearance space of the stacking shaft and extends at least a short distance along the transport means and above this, and
    with second temporary supporting elements (28), which are fastened to a slide (33), which is guided upstream of the stop (13) located downstream,
    wherein for guidance of the slide (33) at least one guide rail (31) is provided, which can swivel around a swivel axis (35), which extends horizontally and which is oriented at right angles to the transport direction of the products on the transport means (16),
    wherein the second temporary supporting elements (28) are disposed in the machine frame (4) in such a manner that they are movable back and forth between an active position, in which they project into the clearance space of the stacking shaft (12), and an inactive position, in which they are retracted out of the clearance space, and also can swivel around the swivel axis (35) lying outside the stacking shaft (12), so that in parallel flow with the products (3) moving vertically downwards in the stacking shaft (12) they can be lowered from above the transport means (16) down to the level of the hold-down means (45).
  2. Device according to Claim 1, characterised in that the transport means (16) has a transport speed higher than the speed at which the products (3) otherwise run in the stream.
  3. Device according to Claim 1, characterised in that the transport means (16) is formed from two transport rollers (17, 18) disposed axis-parallel, of which one and preferably both is/are driven.
  4. Device according to Claim 1, characterised in that the stacking shaft (12) is open at the side.
  5. Device according to Claim 1, characterised in that the stop (14) located upstream begins below the transport means (16) and reaches as far as a level, which lies lower than the upper side of the elevating platform (19) in the completely lowered position.
  6. Device according to Claim 1, characterised in that the stop (14) located upstream is configured as a shaker stop.
  7. Device according to Claim 1, characterised in that the stop (14) located upstream is substantially smooth in the direction of movement of the products (3) falling vertically through the stacking shaft (12).
  8. Device according to Claim 1, characterised in that the stop (13?) located upstream has a lower edge, which is located at a level, which lies lower than the upper side of the elevating platform (19) in the highest position.
  9. Device according to Claim 1, characterised in that the stop (13) located downstream has the shape of a rake with a plurality of spaced prongs arranged parallel to one another, which run vertically and define a face substantially parallel to the stop (13?) located upstream.
  10. Device according to Claim 1, characterised in that the elevating platform (19) has the shape of a rake with a plurality of spaced prongs arranged parallel to one another, the free ends of which point downstream.
  11. Device according to Claim 1, characterised in that the elevating platform (19) is disposed in the machine frame (4) below and upstream of the stop (14) located upstream.
  12. Device according to Claim 1, characterised in that the stop (14) located upstream has slots for the bearing elements (22, 23) for the elevating platform (19) to pass through.
  13. Device according to Claim 1, characterised in that the first temporary supports (25, 26) have a total of at least four fingers, of which two can be advanced into the stacking shaft (12) through a plane defined by the stop (14) located upstream and the other two can be advanced into the clearance space of the stacking shaft (12) through a plane defined by the stop (13) located downstream, and that when advanced the fingers (25, 26) define a supporting face, which runs substantially at right angles to the stops (13, 14) located downstream and upstream.
  14. Device according to Claim 1, characterised in that the initial transport means (42) has several transport belts (43) running parallel and adjacent to one another.
  15. Device according to Claim 14, characterised in that the elevating platform (19) is configured in the form of a rake with at least two prongs, and that at least one of the transport belts (43) extends to between the prongs.
  16. Device according to Claim 14, characterised in that the transport belts (43) located on the outside, in relation to the width of the transport path, revolve around deflection rollers, which are disposed in the machine frame (4) laterally next to the elevating platform (19) in the vicinity of the stop (14) located upstream.
  17. Device according to Claim 14, characterised in that all transport belts (43) run and are driven at the same transport speed.
  18. Device according to Claim 14, characterised in that with their working ends the transport belts (43) define a transport plane, which ascends in transport direction.
  19. Device according to Claim 14, characterised in that the transport belts are supported by rollers (44) in the region of their working ends.
  20. Device according to Claim 1, characterised in that the hold-down means (45) is formed by a plurality of continuous transport belts (46) arranged parallel and adjacent to one another.
  21. Device according to Claim 20, characterised in that the transport belts (46) of the hold-down means (42) revolve around deflection rollers, which are rotatably disposed in the machine frame (4) downstream next to the stop (13) located downstream.
  22. Device according to Claims 14 and 20, characterised in that the working ends of the transport belts (46) of the hold-down means (42) define a plane, which is parallel to the plane of the transport belts (43) of the transport means (42).
  23. Device according to Claims 14 and 20, characterised in that the transport belts (43) of the transport means (42) and the transport belts (46) of the hold-down means (45) run at the same speed.
  24. Device according to Claim 1, characterised in that the second temporary supporting elements (28) are formed by a rake, which has spaced prongs arranged parallel to one another, which are movable into the gaps between the prongs of the stop (13) located downstream.
  25. Device according to Claim 1, characterised in that the at least one guide rail (31) has associated drive elements (37, 38, 41) to swivel the guide rail (31) up and down around the swivel axis (35).
  26. Device according to Claim 1, characterised in that drive elements are provided to guide the slide (33) along the guide rail (31).
  27. Device according to Claim 1, characterised in that control elements are present to coordinate the movements of the moving parts of the device (1) with one another.
  28. Device according to Claim 1, characterised in that the drive means (37, 38, 41) for the guide rails (31) comprises a vertical guidance (38), in which a further adjusting slide (41) is vertically movable, to which the guide rail (31) is attached.
  29. Device according to Claim 1, characterised in that the stop (13) located downstream is adjustably held in the machine frame (4) in such a manner that its distance from the stop located upstream is adjustable to the dimensions of the products (3), viewed in transport direction, in order to adjust the depth of the clearance space of the stacking shaft (12). -
  30. Device according to Claim 1, characterised in that the stroke of the second temporary supporting elements (28) is adjustable in a direction parallel to the guide rails (31) in such a manner that the return stroke, by which the prongs of the second temporary supporting elements (28) are drawn out of the clearance space of the stacking shaft (12), can be minimised.
  31. Device according to Claim 1, characterised in that the drive (37, 38, 41) for swivelling the guide rails (31) around the swivel axis (35) and the drive for running the slide (33) of the second temporary supporting element (28) longitudinally are disengaged mechanically from one another in such a manner that the movements are independent of one another with respect to time and stroke.
  32. Device according to Claim 1, characterised in that the hold-down means (45) can be changed in direction perpendicular to the transport plane defined by the transport means (42).
  33. Device according to Claim 1, characterised in that third temporary supporting elements (25') are provided, which include at least two fingers, which are located on the level of the lowered hold-down means (45) in the region of the stop (14) located upstream.
  34. Device according to Claim 1, characterised in that the second temporary supporting elements (28) can be moved into a lower position, in which their underside is located on the level of a plane, which is defined by the working ends of the hold-down means (45).
  35. Device according to Claim 34, characterised in that in the lower position the guide rail (31) for the second temporary supporting elements (28) runs parallel to the plane defined by the working ends of the hold-down means (45).
  36. Device according to Claim 1, characterised in that to guide the stack (2) out of the stacking shaft (12), the second temporary supporting elements (28) are drawn out of the stacking shaft (12) at the same linear speed, at which the working ends of the transport means (42) and the working ends of the hold-down means (45) move.
  37. Device according to Claim 1, characterised in that at least one of the continuous belts (46) of the hold-down means (45) extends into the vicinity of the rear side of the stop (13) located downstream and runs between two prongs of the retracted second temporary stacking element (28).
EP02005689A 2001-04-17 2002-03-13 Device for delivering piles of folding boxes Expired - Lifetime EP1251093B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118813 2001-04-17
DE10118813A DE10118813C2 (en) 2001-04-17 2001-04-17 Device for destacking carton tubes

Publications (3)

Publication Number Publication Date
EP1251093A2 EP1251093A2 (en) 2002-10-23
EP1251093A3 EP1251093A3 (en) 2004-04-28
EP1251093B1 true EP1251093B1 (en) 2007-04-11

Family

ID=7681729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02005689A Expired - Lifetime EP1251093B1 (en) 2001-04-17 2002-03-13 Device for delivering piles of folding boxes

Country Status (5)

Country Link
US (1) US20020150462A1 (en)
EP (1) EP1251093B1 (en)
AT (1) ATE359226T1 (en)
DE (2) DE10118813C2 (en)
ES (1) ES2283480T3 (en)

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JP3964182B2 (en) 2001-11-02 2007-08-22 株式会社ルネサステクノロジ Semiconductor device
DE10347166A1 (en) * 2003-10-06 2005-04-28 Wilhelm Bahmueller Maschb Prae Device for stacking flat products
JP5052862B2 (en) 2005-10-26 2012-10-17 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Computer controlled drawer of non-stop type paper feeding device or paper ejection device comb-like member
MX2012013009A (en) * 2010-05-12 2013-03-05 Macarbox S L U Piling machine for flat items.
CA2998077C (en) * 2015-09-25 2019-05-28 Totani Corporation Sheet product stacking and feeding apparatus
CN109051048B (en) * 2018-09-07 2024-07-23 惠州市一鑫钢构有限公司 Packing line push tube device
DE102020100067A1 (en) * 2020-01-03 2021-07-08 Wilhelm B a h m ü l l e r Maschinenbau Präzisionswerkzeuge GmbH Device and method for stacking folding boxes and blanks in a stacking shaft

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Also Published As

Publication number Publication date
US20020150462A1 (en) 2002-10-17
DE10118813C2 (en) 2003-07-03
EP1251093A3 (en) 2004-04-28
DE10118813A1 (en) 2002-10-31
DE50209892D1 (en) 2007-05-24
ES2283480T3 (en) 2007-11-01
EP1251093A2 (en) 2002-10-23
ATE359226T1 (en) 2007-05-15

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