EP0216989A2 - Device for pulling a pile of thermoplastic bags from under a pile being formed - Google Patents

Device for pulling a pile of thermoplastic bags from under a pile being formed Download PDF

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Publication number
EP0216989A2
EP0216989A2 EP86105832A EP86105832A EP0216989A2 EP 0216989 A2 EP0216989 A2 EP 0216989A2 EP 86105832 A EP86105832 A EP 86105832A EP 86105832 A EP86105832 A EP 86105832A EP 0216989 A2 EP0216989 A2 EP 0216989A2
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EP
European Patent Office
Prior art keywords
carriage
conveyor belt
stack
shaft
drive
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.)
Granted
Application number
EP86105832A
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German (de)
French (fr)
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EP0216989B1 (en
EP0216989A3 (en
Inventor
Helmut Simon
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering

Definitions

  • the invention relates to a device for pulling off a stack of bags made of plastic films under a stack that is formed, with a conveyor belt that intermittently transports the formed stacks, with a slide that runs on guides that are parallel to the conveying direction of the conveyor belt and in which pressure pieces can be raised and lowered, which are supported are controllable in such a way that they can be placed on the leading edge for pulling off the stack formed during its standstill, then moved with the intermittent movement of the conveyor belt in the transport direction and at the end of the pulling off can be lifted off the stack, with a drive moving the carriage against the conveying direction and with means for clamping the carriage to the conveyor belt.
  • the object of the invention is therefore to simplify the structure of the known device.
  • this object is achieved in that the drive moving the carriage also moves it in the conveying direction and in that the intermittent drive of the conveyor belt takes place by clamping it on the carriage.
  • the drive for the conveyor belt is omitted because it is taken intermittently in accordance with the step-by-step removal of the stacks formed from the carriage which is clamped to it during the preferred movement.
  • the pressure pieces are arranged at the free ends of resilient levers, the other ends of which are fastened to a shaft provided with a rotary drive, and that the opening and closing movements of clamping pieces are derived from the shaft, via which the carriage is clamped to the edges of the conveyor belt during its withdrawal movement.
  • the carriage can be driven via pinions provided with a drive which mesh with toothed racks which are connected to the guides.
  • the clamping pieces can be driven by spring-loaded plungers which are actuated by central cams placed on the shaft.
  • pinions are carried by a shaft 11 which is held on the one hand in the geared motor 12 and on the other hand by two supports 13 and 14.
  • the motor 12 and the supports 13 and 14 are mounted on a crossbar 15 and connect two frame plates 16 and 17 of a sled-type towing vehicle 34 to one another.
  • a shaft 20 is rotatably mounted in the frame plates 16 and 17.
  • a lever 21 is provided on the shaft 20, with the freely projecting end of which the piston rod 22 of a piston-cylinder unit 23 is connected.
  • the piston-cylinder unit 23 itself is held by the frame plate 16.
  • spring-loaded hold-down devices 24 which are arranged at a distance from one another are fastened on the shaft 20 and have rubber buffers 25 at their free end.
  • an eccentric 26 is also clamped to the shaft 20 for the hold-down devices 24 and is used to actuate a resilient plunger 27.
  • This stamp 27 is axially displaceable against spring force in a holder 28 and has a lower pressure piece 29.
  • the holder 28 itself is firmly connected to the frame plate 17.
  • a support beam 30 is provided, which is screwed to the frame plates 16 and 17.
  • the support bar 30 has a recess into which a rubber cushion 31 is inserted.
  • This pivoting also causes the rotation of the eccentric 26 by rotating the shaft 20 in such a way that the resilient plunger 27 is pressed upward by the spring and thus the pressure piece 29 is raised, as a result of which the non-positive connection between the pressure piece 29 and the upper run of the conveyor belt 6 and rubber cushion 31 is released.
  • the geared motor 12 is switched on, so that the entire towing vehicle 34 is moved to the left against the direction of the arrow A (FIG. 1). Then the piston-cylinder unit is retracted and the resilient hold-down devices 24 lie on the front end of the bag stack 33 in the transport direction and press it from above against the rear end of the bag stack 32 29 and the rubber cushion 31 of the support beam 30 clamped. By actuating the motor 12, the stack of bags 33 can then be transported as far in the direction of the arrow A as is desired.

Abstract

Eine Vorrichtung zum Abziehen eines Stapels von Beuteln aus Kunststoff-Folien unter einen sich bildenden Stapel ist mit einem die gebildeten Stapel intermittierend abtransportierenden Förderband (6) versehen. Auf zur Förderrichtung des Förderbandes parallelen Führungen (7, 8) läuft ein Schlitten (34), in dem Druckstücke heb- und absenkbar gelagert sind, die derart steuerbar sind, daß sie zum Abziehen des gebildeten Stapels während des Still­standes auf dessen vorlaufende Kante absetzbar, danach mit der intermittierenden Bewegung des Förderbandes in Transportrichtung verfahrbar und zum Abschluß des Abziehens von dem Stapel abheb­bar sind. Der Schlitten ist durch einen Antrieb (9-12) entgegen der Förderrichtung verfahrbar. Weiterhin sind Mittel (24-25) zum Anklemmen des Schlittens an das Förderband vorgesehen. Zur Vereinfachung der Konstruktion ist vorgesehen, daß der den Schlitten (34) ver­fahrende Antrieb (8 bis 12) diesen auch in Förderrichtung bewegt und daß der intermittierende Antrieb des Förderbandes (6) durch dessen Anklemmen an den Schlitten (34) erfolgt.

Figure imgaf001
A device for pulling off a stack of bags made of plastic films under a stack which is formed is provided with a conveyor belt (6) which transports the stack formed intermittently. A guide (7, 8) runs on guides (7, 8) parallel to the conveying direction of the conveyor belt, in which thrust pieces can be raised and lowered, and can be controlled in such a way that they can be placed on the leading edge of the stack to be pulled off during standstill, thereafter can be moved in the transport direction with the intermittent movement of the conveyor belt and can be lifted off the stack at the end of the removal. The slide can be moved against the conveying direction by a drive (9-12). Means (24-25) for clamping the carriage to the conveyor belt are also provided. To simplify the construction, it is provided that the drive (8 to 12) moving the carriage (34) also moves it in the conveying direction and that the intermittent drive of the conveyor belt (6) takes place by clamping it to the carriage (34).
Figure imgaf001

Description

Die Erfindung betrifft eine Vorrichtung zum Abziehen eines Sta­pels von Beuteln aus Kunststoffolien unter einem sich bildenden Stapel mit einem die gebildeten Stapel intermittierend abtrans­portierenden Förderband, mit einem auf zur Förderrichtung des Förderbandes parallelen Führungen laufenden Schlitten, in dem Druckstücke heb- und absenkbar gelagert sind, die derart steuer­bar sind, daß sie zum Abziehen des gebildeten Stapels während dessen Stillstands auf dessen vorlaufende Kante absetzbar, danach mit der intermittierenden Bewegung des Förderbandes in Transportrichtung verfahrbar und zum Abschluß des Abziehens vom dem Stapel abhebbar sind, mit einem den Schlitten entgegen der Förderrichtung verfahrenden Antrieb und mit Mitteln zum Anklemmen des Schlittens an das Förderband.The invention relates to a device for pulling off a stack of bags made of plastic films under a stack that is formed, with a conveyor belt that intermittently transports the formed stacks, with a slide that runs on guides that are parallel to the conveying direction of the conveyor belt and in which pressure pieces can be raised and lowered, which are supported are controllable in such a way that they can be placed on the leading edge for pulling off the stack formed during its standstill, then moved with the intermittent movement of the conveyor belt in the transport direction and at the end of the pulling off can be lifted off the stack, with a drive moving the carriage against the conveying direction and with means for clamping the carriage to the conveyor belt.

Bei einer aus der DE-PS 28 58 022 bekannten Vorrichtung dieser Art nimmt das mit einem intermittierenden Antrieb versehene För­derband den an dieses während des intermittierenden Vorschubs angeklemmten Schlitten mit, während für die Rückführungsbewegung des Schlittens nach dessen Lösen von dem Förderband eine pneuma­tische Kolben-Zylinder-Einheit vorgesehen ist. Dadurch, daß sowohl für den intermittierenden Antrieb des Förderbandes als auch zur Rückführung des Schlittens entgegen der Förderrichtung des Förderbandes besondere Antriebe vorgesehen werden müssen, ist die bekannte Vorrichtung relativ aufwendig.In a device of this type known from DE-PS 28 58 022, the conveyor belt provided with an intermittent drive takes the carriage clamped to it during the intermittent feed, while a pneumatic piston-cylinder for the return movement of the carriage after its release from the conveyor belt -Unit is provided. The fact that special drives must be provided both for the intermittent drive of the conveyor belt and for the return of the carriage against the conveying direction of the conveyor belt, the known device is relatively complex.

Aufgabe der Erfindung ist es daher, die bekannte Vorrichtung in ihrem Aufbau zu vereinfachen.The object of the invention is therefore to simplify the structure of the known device.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der den Schlitten verfahrende Antrieb diesen auch in Förderrichtung bewegt und daß der intermittierende Antrieb des Förderbandes durch dessen Anklemmen an den Schlitten erfolgt.According to the invention, this object is achieved in that the drive moving the carriage also moves it in the conveying direction and in that the intermittent drive of the conveyor belt takes place by clamping it on the carriage.

Bei der erfindungsgemäßen Vorrichtung entfällt der Antrieb für das Förderband, weil dieses intermittierend entsprechend der schrittweisen Abförderung der gebildeten Stapel von dem an dieses während der Vorzugsbewegung angeklemmten Schlitten mit­genommen wird.In the device according to the invention, the drive for the conveyor belt is omitted because it is taken intermittently in accordance with the step-by-step removal of the stacks formed from the carriage which is clamped to it during the preferred movement.

Nach einer erfinderischen Weiterentwicklung ist vorgesehen, daß die Druckstücke an den freien Enden federnder Hebel angeordnet sind, deren anderen Enden an einer mit einem Drehantrieb verse­henen Welle befestigt sind, und daß von der Welle die Öffnungs-­und Schließbewegungen von Klemmstücken abgeleitet sind, über die der Schlitten während seiner Abzugsbewegung and die Ränder des Förderbandes angeklemmt ist. Durch diese erfindungsgemäße Ausge­staltung ist die Andruckbewegung des abzufördernden Stapels an die Bewegung der Klemmstücke zum Anklemmen des Förderbandes an den Schlitten in einfacher Weise abgestimmt, so daß mit dem gesteuerten Einschalten des Antriebs des Schlittens die inter­mittierende Vorzugsbewegung des Förderbandes erfolgt.According to an inventive further development it is provided that the pressure pieces are arranged at the free ends of resilient levers, the other ends of which are fastened to a shaft provided with a rotary drive, and that the opening and closing movements of clamping pieces are derived from the shaft, via which the carriage is clamped to the edges of the conveyor belt during its withdrawal movement. By means of this embodiment according to the invention, the pressure movement of the stack to be conveyed against the movement of the clamping pieces for clamping the conveyor belt on the carriage is coordinated in a simple manner, so that the controlled intermittent movement of the conveyor belt occurs when the carriage drive is switched on.

Der Antrieb des Schlittens kann über mit einem Antrieb versehene Ritzel erfolgen, die mit Zahnstangen kämmen, die mit den Führun­gen verbunden sind.The carriage can be driven via pinions provided with a drive which mesh with toothed racks which are connected to the guides.

Der Antrieb der Klemmstücke kann durch federbelastete Stößel erfolgen, die von auf die Welle aufgesetzten zentrischen Nocken betätigt werden.The clamping pieces can be driven by spring-loaded plungers which are actuated by central cams placed on the shaft.

ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt

  • Fig. 1 eine Seitenansicht der Vorrichtung zum Abziehen von Stapeln mittels eines aus einem Schlitten bestehenden Schleppwagens und
  • Fig. 2 eine Vorderansicht der Vorrichtung nach Fig. 1.
an embodiment of the invention is explained below with reference to the drawing. In this shows
  • Fig. 1 is a side view of the device for pulling stacks by means of a trolley consisting of a carriage and
  • FIG. 2 shows a front view of the device according to FIG. 1.

In den beiden Seitenteilen 1 des Maschinengestellts sind vier Umlenkrollen 2 bis 5 frei drehbar gelagert, über die das endlose Förderband 6 läuft. Unterhalb des Obertrums des Förderbandes 6 sind mit den beiden Seitengestellen Zahnstangen 7 und 8 fest verschraubt, in die von unten zwei Ritzel 9 und 10 eingreifen.In the two side parts 1 of the machine frame, four deflection rollers 2 to 5 are freely rotatable, over which the endless conveyor belt 6 runs. Below the upper run of the conveyor belt 6, racks 7 and 8 are firmly screwed to the two side frames, into which two pinions 9 and 10 engage from below.

Diese Ritzel werden von einer Welle 11 getragen, die zum einen im Getriebemotor 12 und zum andern von zwei Stützen 13 und 14 gehalten ist. Der Motor 12 sowie die Stützen 13 und 14 lagern auf einer Quertraverse 15 und verbinden zwei Rahmenplatten 16 und 17 eines schlittenartigen Schleppwagens 34 miteinander. Die Rahmenplatten 16 und 17, durch die die Enden der Welle 11 hin­durchgeführt sind, weisen je zwei Tragrollen 18 und 19 auf, mit­tels denen sie sich auf der oberen nichtverzahnten Seite der Zahnstangen 7 und 8 abstützen. Im oberen Bereich ist eine Welle 20 in den Rahmenplatten 16 und 17 verdrehbar gelagert.These pinions are carried by a shaft 11 which is held on the one hand in the geared motor 12 and on the other hand by two supports 13 and 14. The motor 12 and the supports 13 and 14 are mounted on a crossbar 15 and connect two frame plates 16 and 17 of a sled-type towing vehicle 34 to one another. The frame plates 16 and 17, through which the ends of the shaft 11 are passed, each have two support rollers 18 and 19, by means of which they are supported on the upper non-toothed side of the racks 7 and 8. In the upper area, a shaft 20 is rotatably mounted in the frame plates 16 and 17.

Zum Zwecke der Verdrehung ist auf der Welle 20 ein Hebel 21 vorgesehen, mit dessen frei auskragendem Ende die Kolbenstange 22 einer Kolbenzylindereinheit 23 verbunden ist. Die Kolben­zylindereinheit 23 selbst wird von der Rahmenplatte 16 gehalten. Neben dem Hebel 21 sind mit Abstand zueinander angeordnete fe­dernde Niederhalter 24 auf der Welle 20 befestigt, die an ihrem freien Ende Gummipuffer 25 aufweisen.For the purpose of rotation, a lever 21 is provided on the shaft 20, with the freely projecting end of which the piston rod 22 of a piston-cylinder unit 23 is connected. The piston-cylinder unit 23 itself is held by the frame plate 16. In addition to the lever 21, spring-loaded hold-down devices 24 which are arranged at a distance from one another are fastened on the shaft 20 and have rubber buffers 25 at their free end.

Aus der rechten Seite der Fig. 2 ist zu erkennen, daß zu den Nie­derhaltern 24 noch ein Exzenter 26 mit der Welle 20 verklemmt ist, der zur Betätigung eins federnden Stempels 27 dient. Dieser Stempel 27 ist gegen Federkraft axial verschiebbar in einem Hal­ter 28 geführt und weist ein unteres Druckstück 29 auf. Der Hal­ter 28 selbst ist mit der Rahmenplatte 17 fest verbunden. Unter­halb des Obertrums des Förderbandes 6 ist ein Stützbalken 30 vorgesehen, der mit den Rahmenplatten 16 und 17 fest verschraubt ist. Im Bereich des Druckstücks 29 des Stempels 27 weist der Stützbalken 30 eine Ausnehmung auf, in die ein Gummikissen 31 eingelegt ist.From the right side of FIG. 2 it can be seen that an eccentric 26 is also clamped to the shaft 20 for the hold-down devices 24 and is used to actuate a resilient plunger 27. This stamp 27 is axially displaceable against spring force in a holder 28 and has a lower pressure piece 29. The holder 28 itself is firmly connected to the frame plate 17. Below the upper run of the conveyor belt 6, a support beam 30 is provided, which is screwed to the frame plates 16 and 17. In the area of the pressure piece 29 of the stamp 27, the support bar 30 has a recess into which a rubber cushion 31 is inserted.

Nachstehend wird die Funktion der beschriebenen Vorrichtung erläutert: In der in Fig. 1 dargestellten Lage ist ein Beutel­stapel 32 gerade von der erfindungsgemäßen Vorrichtung wegtransportiert worden. Auf diesen Beutelstapel 32 ist nun schon wieder ein weiterer Beutelstapel 33 von einer nicht darge­stellten Einrichtung abgelegt worden. Um auch diesen Beutelsta­pel 33 um einen bestimmten Betrag in Pfeilrichtung A (Fig. 1) bewegen zu können, wird zunächst der Hebel 21 über die Kolben­zylindereinheit 23 aus der mit vollen Linien dargestellten Lage in die mit gestrichelten Linien dargestellte hochgeschwenkt. Diese Verschwenkung bewirkt gleichzeitig durch das Verdrehen der Welle 20 auch das Verdrehen des Exzenters 26 derart, daß der federnde Stempel 27 durch die Feder nach oben gedrückt wird und sich somit das Druckstück 29 anhebt, wodurch die kraftschlüssige Verbindung zwischen Druckstück 29, Obertrum des Förderbandes 6 und Gummikissen 31 gelöst wird.The function of the device described is explained below: In the position shown in FIG. 1, a stack of bags 32 is straight from the device according to the invention been transported away. Another bag stack 33 has now been placed on this bag stack 32 by a device, not shown. In order to also be able to move this stack of bags 33 by a certain amount in the direction of arrow A (FIG. 1), the lever 21 is first pivoted upward via the piston-cylinder unit 23 from the position shown in full lines into the position shown in dashed lines. This pivoting also causes the rotation of the eccentric 26 by rotating the shaft 20 in such a way that the resilient plunger 27 is pressed upward by the spring and thus the pressure piece 29 is raised, as a result of which the non-positive connection between the pressure piece 29 and the upper run of the conveyor belt 6 and rubber cushion 31 is released.

Nachdem dies geschehen ist, wird der Getriebemotor 12 einge­schaltet, so daß der gesamte Schleppwagen 34 entgegen der Rich­tung des Pfeils A (Fig. 1) nach links bewegt wird. Danach wird die Kolbenzylindereinheit eingefahren und die federnden Nieder­halter 24 legen sich auf das in Transportrichtung vordere Ende des Beutelstapels 33 auf und drücken dieses von oben gegen das hintere Ende des Beutelstapels 32. Gleichzeitig wird das Ober­trum des Förderbandes 6 durch Herunterdrücken des Stempels 27 zwischen dem Druckstück 29 und dem Gummikissen 31 des Stütz­balkens 30 festgeklemmt. Durch Betätigung des Motors 12 kann dann wieder der Beutelstapel 33 so weit in Pfeilrichtung A transportiert werden, wie dies gewünscht ist.After this has been done, the geared motor 12 is switched on, so that the entire towing vehicle 34 is moved to the left against the direction of the arrow A (FIG. 1). Then the piston-cylinder unit is retracted and the resilient hold-down devices 24 lie on the front end of the bag stack 33 in the transport direction and press it from above against the rear end of the bag stack 32 29 and the rubber cushion 31 of the support beam 30 clamped. By actuating the motor 12, the stack of bags 33 can then be transported as far in the direction of the arrow A as is desired.

Ein Verrutschen der einzelnen Beutel eines Beutelstapels während des Transports ist ausgeschlossen, weil die Niederhalter 24 lediglich die Aufgabe haben, die einzelnen Beutel gegeneinander festzuhalten. Der Transport des Förderbandes 6 geschieht dabei ausschließlich durch die Verspannung zwischen dem Druckstück 29 und dem Gummikissen 31 des Stützbalkens 30.Slipping of the individual bags of a stack of bags during transport is impossible because the hold-down devices 24 only have the task of holding the individual bags against one another. The conveyor belt 6 is transported exclusively by the bracing between the pressure piece 29 and the rubber cushion 31 of the support beam 30.

Claims (6)

1. Vorrichtung zum Abziehen eines Stapels von Beuteln aus Kunststoffolien unter einem sich bildenden Stapel
mit einem die gebildeten Stapel intermittierend ab­transportierenden Förderband,
mit einem auf zur Förderrichtung des Förderbandes parallelen Führungen laufenden Schlitten, in dem Druck­stücke heb- und absenkbar gelagert sind, die derart steuerbar sind, daß sie sum Abziehen des gebildeten Stapels während dessen Stillstands auf dessen vorlaufende Kante absetzbar, danach mit der intermittierenden Bewegung des Förderbandes in Transportrichtung verfahrbar und zum Abschluß des Abziehens vom dem Stapel abhebbar sind,
mit einem den Schlitten entgegen der Förderrichtung verfahrenden Antrieb und
mit Mitteln zum Anklemmen des Schlittens an das Förderband,
dadurch gekennzeichnet,
daß der den Schlitten (34) verfahrende Antrieb (8 - 12) diesen auch in Förderrichtung bewegt und daß der inter­mittierende Antrieb des Förderbandes (6) durch dessen Anklemmen an den Schlitten (34) erfolgt.1. Device for pulling a stack of bags made of plastic films under a stack that is formed
with a conveyor belt that intermittently transports the stacks formed,
with a carriage running on guides parallel to the conveying direction of the conveyor belt, in which thrust pieces can be raised and lowered, which can be controlled in such a way that they can be deposited on the leading edge of the stack while it is being pulled off while it is stationary, then with the intermittent movement the conveyor belt can be moved in the transport direction and can be lifted off the stack at the end of the removal,
with a drive moving the carriage against the conveying direction and
with means for clamping the carriage to the conveyor belt,
characterized,
that the carriage (8 - 12) moving the carriage (8 - 12) also moves it in the conveying direction and that the intermittent drive of the conveyor belt (6) takes place by clamping it to the carriage (34). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckstücke (25) an den freien Enden von federnden Hebeln (24) angeordnet sind, deren anderen Enden an einer mit einem Drehantrieb (21, 23) versehenen Welle (20) befestigt sind, und daß von der Welle (20) die Öffnungs-­und Schließbewegungen von Klemmstücken (29) abgeleitet sind, über die der Schlitten (34) während seiner Abzugs­bewegung an die Ränder des Förderbandes (6) angeklemmt ist.2. Device according to claim 1, characterized in that the pressure pieces (25) are arranged at the free ends of resilient levers (24), the other ends of which are fastened to a shaft (20) provided with a rotary drive (21, 23), and that the opening and closing movements of clamping pieces (29) are derived from the shaft (20), by means of which the carriage (34) is clamped to the edges of the conveyor belt (6) during its withdrawal movement. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeich­net, daß die Führungen mit Zahnstangen (7, 8) versehen sind, mit denen in dem Schlitten (34) gelagerte und mit einem Antrieb (11, 12) versehene Ritzel (9, 10) kämmen.3. Device according to claim 1 or 2, characterized in that the guides are provided with racks (7, 8), with which in the carriage (34) mounted and with a drive (11, 12) provided pinion (9, 10) comb. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Drehantrieb der Welle (20) aus einem mit der Welle (20) verbundenen Hebel (21) besteht, an den eine Seite einer Druckmittelkolbenzylindereinheit (23) angelenkt ist, deren anderes Ende in dem Schlitten (34) gelagert ist.4. Device according to one of claims 1 to 3, characterized in that the rotary drive of the shaft (20) consists of a lever (21) connected to the shaft (20), to which one side of a pressure piston cylinder unit (23) is articulated, the other end is mounted in the carriage (34). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Schlitten (34) unter dem Obertrum des Förderbandes (6) mit Widerlagern (30) für die Druck­stücke (25) und Klemmstücke (29) versehen ist.5. Device according to one of claims 1 to 4, characterized in that the carriage (34) is provided under the upper run of the conveyor belt (6) with abutments (30) for the pressure pieces (25) and clamping pieces (29). 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Klemmstücke (29) aus Stößeln (27) bestehen, die durch Druckfedern in Richtung ihrer Öffnungs­stellung beaufschlagt sind, und daß sich die Stößel (24) zu ihrer Betätigung auf auf die Welle (20) aufgekeilte exzentrische Scheiben (26) abstützen.6. Device according to one of claims 1 to 5, characterized in that the clamping pieces (29) consist of plungers (27) which are acted upon by compression springs in the direction of their open position, and that the plunger (24) for their actuation on support the shaft (20) wedged eccentric disks (26).
EP86105832A 1985-07-09 1986-04-28 Device for pulling a pile of thermoplastic bags from under a pile being formed Expired - Lifetime EP0216989B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853524486 DE3524486A1 (en) 1985-07-09 1985-07-09 DEVICE FOR REMOVING A STACK OF PLASTIC BAGS UNDER A FORMING STACK
DE3524486 1985-07-09

Publications (3)

Publication Number Publication Date
EP0216989A2 true EP0216989A2 (en) 1987-04-08
EP0216989A3 EP0216989A3 (en) 1989-01-04
EP0216989B1 EP0216989B1 (en) 1990-09-19

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EP86105832A Expired - Lifetime EP0216989B1 (en) 1985-07-09 1986-04-28 Device for pulling a pile of thermoplastic bags from under a pile being formed

Country Status (6)

Country Link
US (1) US4723654A (en)
EP (1) EP0216989B1 (en)
JP (1) JPS6232039A (en)
CA (1) CA1278585C (en)
DE (1) DE3524486A1 (en)
ES (1) ES8707142A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03217759A (en) * 1990-01-24 1991-09-25 Matsushita Electric Ind Co Ltd Petroleum burning apparatus
EP0605906B1 (en) * 1993-01-08 1997-10-08 Agfa-Gevaert N.V. Clamping device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206295B (en) * 1964-01-21 1965-12-02 Stiegler Maschf Felix Device for the step-by-step conveying of stacks of flat objects
FR2310210A1 (en) * 1975-05-06 1976-12-03 Lagain Georges DEVICE FOR RECEIVING AND TRANSPORTING FLAT OBJECTS, IN PARTICULAR AT THE EXIT OF A MACHINE FOR MAKING BAGS
FR2382329A1 (en) * 1977-03-01 1978-09-29 Windmoeller & Hoelscher DEVICE FOR SIMULTANEOUSLY SECTIONING AND ASSEMBLING IN BLOCKS OF ARTICLES ARRANGED IN STACKS, IN PARTICULAR SHEETS AND COUPONS
EP0049395A2 (en) * 1980-10-02 1982-04-14 SOCIETA' INDUSTRIALE BAGNOLO S.I.B. S.r.l. Mesh-belt conveyor for industrial furnaces
EP0050339A1 (en) * 1980-10-16 1982-04-28 Fmc Corporation Thermoplastic bag stacking apparatus
DE3046107A1 (en) * 1980-12-06 1982-06-09 Bielomatik Leuze Gmbh + Co, 7442 Neuffen STACKING DEVICE FOR BOWS
FR2557549A1 (en) * 1983-12-29 1985-07-05 Lagain Georges Device for flattening and removing stacks of bags at the outlet of a machine for manufacturing plastic bags

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US31945A (en) * 1861-04-09 Bobbin fob
US1991835A (en) * 1930-03-22 1935-02-19 Bayuk Cigars Inc Cigar handling mechanism
US2684626A (en) * 1948-12-28 1954-07-27 Journal Company Bundle tying machine feeder and the control mechanism
US3283918A (en) * 1963-12-02 1966-11-08 George C Devol Coordinated conveyor and programmed apparatus
US3958682A (en) * 1973-11-05 1976-05-25 Martin Paul S Coordination of robot and conveyor
DE2858022C2 (en) * 1978-07-28 1983-09-08 Windmöller & Hölscher, 4540 Lengerich Device for pulling off a stack of bags made of plastic film from under a stack that is being formed
JPS5796747A (en) * 1980-12-08 1982-06-16 Hitachi Ltd Device for clamping and centering long material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206295B (en) * 1964-01-21 1965-12-02 Stiegler Maschf Felix Device for the step-by-step conveying of stacks of flat objects
FR2310210A1 (en) * 1975-05-06 1976-12-03 Lagain Georges DEVICE FOR RECEIVING AND TRANSPORTING FLAT OBJECTS, IN PARTICULAR AT THE EXIT OF A MACHINE FOR MAKING BAGS
FR2382329A1 (en) * 1977-03-01 1978-09-29 Windmoeller & Hoelscher DEVICE FOR SIMULTANEOUSLY SECTIONING AND ASSEMBLING IN BLOCKS OF ARTICLES ARRANGED IN STACKS, IN PARTICULAR SHEETS AND COUPONS
EP0049395A2 (en) * 1980-10-02 1982-04-14 SOCIETA' INDUSTRIALE BAGNOLO S.I.B. S.r.l. Mesh-belt conveyor for industrial furnaces
EP0050339A1 (en) * 1980-10-16 1982-04-28 Fmc Corporation Thermoplastic bag stacking apparatus
DE3046107A1 (en) * 1980-12-06 1982-06-09 Bielomatik Leuze Gmbh + Co, 7442 Neuffen STACKING DEVICE FOR BOWS
FR2557549A1 (en) * 1983-12-29 1985-07-05 Lagain Georges Device for flattening and removing stacks of bags at the outlet of a machine for manufacturing plastic bags

Also Published As

Publication number Publication date
JPS6232039A (en) 1987-02-12
EP0216989B1 (en) 1990-09-19
EP0216989A3 (en) 1989-01-04
DE3524486C2 (en) 1987-07-16
ES8707142A1 (en) 1987-07-16
DE3524486A1 (en) 1987-01-22
CA1278585C (en) 1991-01-02
US4723654A (en) 1988-02-09
ES556302A0 (en) 1987-07-16

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