EP0308688B1 - Feeding device for a stack of sheets along a curved path - Google Patents

Feeding device for a stack of sheets along a curved path Download PDF

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Publication number
EP0308688B1
EP0308688B1 EP88114057A EP88114057A EP0308688B1 EP 0308688 B1 EP0308688 B1 EP 0308688B1 EP 88114057 A EP88114057 A EP 88114057A EP 88114057 A EP88114057 A EP 88114057A EP 0308688 B1 EP0308688 B1 EP 0308688B1
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EP
European Patent Office
Prior art keywords
guide
stack
conveyor belt
devices
sheets
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
EP88114057A
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German (de)
French (fr)
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EP0308688A3 (en
EP0308688A2 (en
Inventor
Karl-Fritz Heina
Horst Schwarz
Wolfgang Weber
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder GmbH and Co KG
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Publication of EP0308688A2 publication Critical patent/EP0308688A2/en
Publication of EP0308688A3 publication Critical patent/EP0308688A3/en
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Publication of EP0308688B1 publication Critical patent/EP0308688B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00Supports or magazines for piles from which articles are to be separated
    • B65H1/08Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/22Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device moving in direction of plane of articles, e.g. for bodily advancement of fanned-out piles
    • B65H1/225Round stack feeders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/24Feeding articles in overlapping streams, i.e. by separation of articles from a pile

Definitions

  • the invention relates to a circular pile sheet feeder with a feeder frame, on which an upper lay-up table, which can be loaded with flaky sheet stacks and has a first belt conveyor with rollers, a deflection drum, a lower removal table, which has a second belt conveyor with rollers, the receiving side of which is opposite the discharge section of the is arranged first belt conveyor, and spaced apart flexible guide devices for pressing the sheet to the deflection drum adapted to the existing sheet stack height are arranged, which are held at one end above the upper lay-up table, wherein they form a hollow inlet wedge with the deflection drum, and the are fixed with their lower ends via elastically stretchable elements each on a rod connected to the feeder frame.
  • the flexible guide devices for pressing the sheets onto the deflection drum consist, on the one hand, of spaced-apart lengths over the axial length of the deflection drum, around rolls of endlessly rotating belts, some of which can be deflected in such a manner are maintained that an adaptation to the respectively predetermined height of the shingled sheet stack is ensured while maintaining the contact pressure of the tapes.
  • rope-shaped guides are provided between the endlessly rotating guide devices, which are held at one end above the upper lay-up table and form a hollow inlet wedge with the deflection drum, while their lower ends are via springs are connected to frame-side fixed points, so that the rope-shaped guides can also adapt to the height of the sheet stack by stretching these springs.
  • the table-side speed of the sheet stack is somewhat lower than that of the belts pressing the sheet stack against the deflection drum, the rope-shaped guides being made of a low-friction material. Due to this relative speed between the belts and the stack, the flaking can break open, which appears in the form of irregular distances between the sheets.
  • the respective setting of the same speed in order to reduce the relative speed to zero is very complex both in terms of apparatus and control technology.
  • the object underlying the invention is to design the circular stack feeder of the generic type in such a way that pushing or pulling apart of the shingled sheet stack deflected around the deflection roller is avoided without great technical effort.
  • the second belt conveyor sits on a swivel frame which is on the feeder frame is articulated and biased towards the deflection drum belonging to the first belt conveyor
  • the flexible guide devices form the sole means for pressing the sheet against the deflection drum and consist of a band of rollers arranged in parallel with one another, which have an annular recess in the central region of their longitudinal extent , wherein a guide belt is arranged in the recesses of the rollers on the side of the flexible guide means facing the deflecting drum, the thickness of which is smaller than the depth of the recesses, that a deflecting element is arranged on the swivel frame relative to the receiving-side roller of the second belt conveyor and that the flexible guide means are passed between the receiving-side roller of the second belt conveyor and the deflecting element.
  • the flexible guide devices enable the sheet stack to be guided around the deflection drum almost without friction, so that there is no relative speed between the two sides of the sheet stack, so that the deflection and the delivery to the removal table maintain the uniform scaling and thus the uniform sheet spacing are guaranteed.
  • the resilient preload of the swivel frame in the direction of the deflection drum, for example by a gas spring, and the resiliently elastic fixing of the lower end of the flexible guide devices ensure automatic adaptation to the sheet stack height in each case.
  • the guidance of the sheet stack is not impaired by the guide sections of the rollers located on the side of the recess. Covering the gap between the rollers in the area of the cutouts prevents that sheet parts can get between the rollers.
  • the very low friction is further reduced by reducing the contact area of the rollers with the bends, and there is no frictional contact between the guide belt and the bends, since it lies within the recesses and, due to its smaller thickness, does not extend into the peripheral region of the lateral guide sections the roll extends.
  • Adaptation to different sheet stack heights in the area of the hollow inlet wedge between the upper lay-up table and the deflection drum is particularly simple when the rod holding the upper ends of the flexible guide devices is seated at one end of pivoting levers, each between an upper stop and a lower stop, against which they are biased, are pivotable, and when the other ends of the pivot lever are hinged to the feeder frame.
  • the second belt conveyor is seated on a swivel frame which is articulated on the feeder frame and is biased towards the deflection drum belonging to the first belt conveyor
  • the flexible guide devices are the sole means for pressing the sheet against the deflection drum form and consist of belts made of low-friction plastic, such as polytetrafluoroethylene, each belt being formed from two layers, of which the layer facing the deflection drum is arranged lying on the second belt conveyor in the area of its reception as a transfer belt, that on the swivel frame opposite the roll on the receiving side of the second belt conveyor a deflecting element is arranged and that the belts between the receiving-side roller of the second belt conveyor and the Deflection element are passed.
  • lower guide pieces are expediently arranged in the lower region of the deflection drum between the flexible guide devices, which extend from a rod held on the arms of the swivel frame between the flexible guide devices and end tangentially on the receiving side of the second roller conveyor.
  • the spatial assignment of the lower guide pieces to the second belt guide when pivoting due to changing sheet stack heights is retained.
  • upper guide pieces made of resiliently flexible material are arranged, which extend from the rod holding the upper ends of the flexible guide devices to the lower guide pieces and adapt to the respective sheet stack and guide it onto the lower guide pieces.
  • This enables an additional low-friction guidance of the sheet stack in the upper region of the deflection drum, the upper guide pieces being able to move on the lower guide pieces depending on the respective sheet stack height.
  • the upper and lower guide pieces are preferably strips made of a low-friction plastic.
  • the round stack sheet feeder 1 shown in FIGS. 1 to 3 has a lay-on table with a first belt conveyor 2, which includes a deflection drum 3 and rollers 4 and 5, and a belt drive (not shown). Below the deflection drum 3 there is a removal table with a second belt conveyor 6, the conveyor belt of which is guided over rollers 8, 9 and 10 and driven by a drive (not shown) is.
  • the rollers 8, 9 and 10 are mounted on the side parts of a swivel frame 11.
  • the side parts are articulated in the region of the discharge-side end of the second belt conveyor 6 on the side walls of the feeder frame 7 by pivot pins 23 (FIG. 3) and are biased in the direction of the deflection drum 3 by a gas spring 44 which can be adjusted to engage the feeder frame 7.
  • the side parts of the swivel frame 11 each have an upwardly extending arm 12 at their end opposite the articulation on the feeder frame 7.
  • the arms 12 of the side parts of the swivel frame 11 are connected by a rod 14.
  • a deflection element 13 which can consist of a roller, is fixed or rotatable on the side parts of the swivel frame 11.
  • a pivot lever 15 is articulated on each side part of the feeder frame 7 with the aid of a pivot pin 17, which carries in the area of its end opposite the pivot pin 17 a rod 16 connecting the pivot lever 15, on which band-shaped, flexible, guide devices 18 provided with rollers 32 (FIG. 4) are articulated.
  • the flexible guide devices 18 form, with the lay-up table of the first belt conveyor 2, a hollow inlet wedge for a sheet stack.
  • the other ends of the flexible guide devices 18 are connected via springs 19 to a rod 20 which extends in the lower region of the feeder frame 7 between its side parts.
  • the flexible guide devices 18 are slidably guided between the receiving-side roller 8 of the second belt conveyor 6 and the deflection element 13. In the position shown in FIG.
  • the flexible guide devices lie 18 on the deflection circumferential section of the deflection drum 3, while in the position for the sheet conveyance shown in FIG. 2 they have automatically adapted to a predetermined sheet stack height by stretching the springs 19. In this position, the pivot frame 11 is pivoted downward by compressing the gas spring 44 in accordance with the height of the sheet stack.
  • each of these guides has a lower guide piece 22, which is attached to the rod 14 connecting the arms 12, which is located at the level of the center of the deflection drum 3 or slightly below, and with its other end tangent to the upper, receiving the sheet stack Runs of the second belt conveyor 6 rests. Since the lower guide pieces 22 pivot by mounting on the swivel frame 11 in the same way as the second belt conveyor 6 depending on the sheet stack height, there is only a slight displacement of the lower guide pieces 22 in the area of their support end on the second belt conveyor 6, which is due to the deflection depends on the predetermined sheet stack height, whereby the length of the lower guide pieces 22 is short and accordingly the friction is kept as low as possible.
  • upper guide pieces 21 are attached between the flexible guide devices 18 in association with the lower guide pieces 22, which rest with their other end tangent on the lower guide pieces 22.
  • the upper guide pieces 21 extend to the receiving side of the second belt conveyor 6, in which 2, in which a sheet stack, not shown, is conveyed, the upper guide pieces 21 extend in the contact plane of the flexible guide devices 18 with the sheet stack, but are to the right in FIG. 2 to show the course shown shifted.
  • the lower end of the upper guide pieces 21 has shifted onto the lower guide pieces 22, its guide surface merging into the guide surface of the lower guide piece 22.
  • the upper guide pieces 21 and the lower guide pieces 22 are made of polytetrafluoroethylene tapes or spring steel.
  • the roller-shaped deflection element 13 is held on the side parts of the swivel frame 11 by means of rod journals 27, while the roller 8 of the second belt conveyor 6 is supported by roller journals 30.
  • the deflection drum 3 is supported on the side parts of the feeder frame 7 via axle journals 28.
  • the deflection of the pivot lever 15 mounted on the side parts of the feeder frame 7 via pivot pin 17 is limited at the bottom by a stop 26 on the side of the boom frame and at the top against the bias of a spring 24 by an upper stop 25.
  • the upper delivery table can be pivoted from the rest position shown in FIG. 1 into the working position shown in FIG. 2 by means of a third belt conveyor 29 which can be pivoted about the axis of the roller 5.
  • the structure of the flexible guide devices 18 is shown in detail in FIGS. 4 and 5.
  • the flexible guide device 18 can be fixed with an upper holding piece 38 by means of a clamping screw 31 on the upper rod 16 connecting the pivoting levers 15.
  • the upper holding piece 38 is articulated with an end bolt 37 connected to the flexible guide device 18.
  • a lower holding piece 39 is articulated on the flexible guide device 18 via a further end bolt 37, which has a bore 40 to which the spring 19 for fastening the rod 20 (FIG. 1) can be attached.
  • the flexible guide device 18 consists of rollers 32, which are connected in a known manner by tabs 35 and bolts 36 so that the individual rollers 32 are rotatable and the positions of their axes can be changed relative to one another in accordance with the circumference of the deflection drum 3 or in adaptation to the sheet stack height .
  • the rollers 32 are made of a low-friction plastic and have in their central region a recess 33 which extends over the entire circumference.
  • a guide band 41 shown in broken lines in FIGS. 4 and 5 is arranged on the side assigned to the deflection drum 3, the thickness of which is less than the depth of the cutouts 33.
  • the gaps between the rollers 32 are covered in the area of the cutouts 33, so that no arc sections can get into this column.
  • each flexible guide device 18 consists of a band having two layers 18a and 18b.
  • the inner layer 18b facing the deflection drum 3 is not guided like the outer layer 18a around the deflection element 13 to the rod 20 but as a transfer belt to the second belt conveyor 6, on which it rests in its receiving area.

Description

Die Erfindung betrifft einen Rundstapelbogenanleger mit einem Anlegerrahmen, an dem ein oberer Auflegetisch, der mit geschuppten Bogenstapeln beladbar ist und einen ersten Bandförderer mit Rollen aufweist, eine Umlenktrommel, ein unterer Entnahmetisch, der einen zweiten Bandförderer mit Rollen aufweist, dessen Aufnahmeseite gegenüber dem Abgabeabschnitt des ersten Bandförderers angeordnet ist, und im Abstand zueinander angeordnete flexible Führungseinrichtungen zum Andrücken der Bogen an die Umlenktrommel angepaßt an die vorhandene Bogenstapelhöhe angeordnet sind, die mit ihren einen Enden oberhalb des oberen Auflegetisches gehalten sind, wobei sie mit der Umlenktrommel einen Einlaufhohlkeil bilden, und die mit ihren unteren Enden über elastisch dehnbare Elemente jeweils an einer mit dem Anlegerrahmen verbundenen Stange festgelegt sind.The invention relates to a circular pile sheet feeder with a feeder frame, on which an upper lay-up table, which can be loaded with flaky sheet stacks and has a first belt conveyor with rollers, a deflection drum, a lower removal table, which has a second belt conveyor with rollers, the receiving side of which is opposite the discharge section of the is arranged first belt conveyor, and spaced apart flexible guide devices for pressing the sheet to the deflection drum adapted to the existing sheet stack height are arranged, which are held at one end above the upper lay-up table, wherein they form a hollow inlet wedge with the deflection drum, and the are fixed with their lower ends via elastically stretchable elements each on a rod connected to the feeder frame.

Bei einem solchen, aus der DE-A-1 960 543 bekannten Rundstapelbogenanleger bestehen die flexiblen Führungseinrichtungen zum Andrücken der Bogen an die Umlenktrommel einerseits aus im Abstand über der axialen Länge der Umlenktrommel angeordneten, um Rollen endlos umlaufenden Bändern, von denen einige derart elastisch auslenkbar gehalten sind, daß eine Anpassung an die jeweils vorgegebene Höhe des geschuppten Bogenstapels unter Aufrechterhaltung der Anpreßkraft der Bänder gewährleistet ist. Zusätzlich sind dabei zwischen den aus Bändern bestehenden, endlos umlaufenden Führungseinrichtungen seilförmige Führungen vorgesehen, die mit ihren einen Enden oberhalb des oberen Auflegetisches gehalten sind und mit der Umlenktrommel einen Einlaufhohlkeil bilden, während ihre unteren Enden über Federn mit rahmenseitigen Festpunkten verbunden sind, so daß durch Dehnen dieser Federn sich die seilförmigen Führungen ebenfalls an die Höhe des Bogenstapels anpassen können.In such a round stack sheet feeder known from DE-A-1 960 543, the flexible guide devices for pressing the sheets onto the deflection drum consist, on the one hand, of spaced-apart lengths over the axial length of the deflection drum, around rolls of endlessly rotating belts, some of which can be deflected in such a manner are maintained that an adaptation to the respectively predetermined height of the shingled sheet stack is ensured while maintaining the contact pressure of the tapes. In addition, rope-shaped guides are provided between the endlessly rotating guide devices, which are held at one end above the upper lay-up table and form a hollow inlet wedge with the deflection drum, while their lower ends are via springs are connected to frame-side fixed points, so that the rope-shaped guides can also adapt to the height of the sheet stack by stretching these springs.

Bei dem bekannten Rundstapelbogenanleger ist die tischseitige Geschwindigkeit des Bogenstapels etwas geringer als die der den Bogenstapel gegen die Umlenktrommel drückenden Bänder, wobei die seilförmigen Führungen aus einem reibungsarmen Material bestehen. Aufgrund dieser Relativgeschwindigkeit zwischen den Bändern und dem Stapel kann es zu einem Aufbruch der Schuppung kommen, was am Entnahmetisch in Form von unregelmäßigen Abständen der Bogen in Erscheinung tritt. Die jeweilige Einstellung einer gleichen Geschwindigkeit, um die Relativgeschwindigkeit auf Null zu verringern, ist sowohl apparativ als auch steuerungstechnisch sehr aufwendig.In the known round stack sheet feeder, the table-side speed of the sheet stack is somewhat lower than that of the belts pressing the sheet stack against the deflection drum, the rope-shaped guides being made of a low-friction material. Due to this relative speed between the belts and the stack, the flaking can break open, which appears in the form of irregular distances between the sheets. The respective setting of the same speed in order to reduce the relative speed to zero is very complex both in terms of apparatus and control technology.

Aus der GB-C-604653 ist es ferner bekannt, im Abstand von der Umlenktrommel eines Rundstapelbogenanlegers gekrümmte Führungsglieder vorzusehen, die am Anlegerrahmen befestigt sind. Diese Führungsglieder haben einerseits eine sehr hohe Reibung und ermöglichen ein Anpassen an unterschiedliche Bogenstapelhöhen nur nach Durchführung aufwendiger Einstellarbeiten.From GB-C-604653 it is also known to provide curved guide members which are fastened to the feeder frame at a distance from the deflection drum of a circular stacking sheet feeder. On the one hand, these guide members have a very high friction and allow adaptation to different sheet stack heights only after complex adjustment work has been carried out.

Die der Erfindung zugrunde liegende Aufgabe besteht darin, den Rundstapelbogenanleger der gattungsgemäßen Art so auszubilden, daß ohne großen technischen Aufwand ein Zusammenschieben oder Auseinanderziehen des um die Umlenkrolle umgelenkten geschuppten Bogenstapels vermieden wird.The object underlying the invention is to design the circular stack feeder of the generic type in such a way that pushing or pulling apart of the shingled sheet stack deflected around the deflection roller is avoided without great technical effort.

Diese Aufgabe wird ausgehend von dem Rundstapelbogenanleger der gattungsgemäßen Art dadurch gelöst, daß der zweite Bandförderer an einem Schwenkrahmen sitzt, der am Anlegerrahmen angelenkt und zu der zum ersten Bandförderer gehörenden Umlenktrommel hin vorgespannt ist, daß die flexiblen Führungseinrichtungen die alleinigen Einrichtungen zum Andrücken der Bogen an die Umlenktrommel bilden und mit aus einem Band von zueinander parallel angeordneten Rollen bestehen, die im mittleren Bereich ihrer Längserstreckung eine ringförmige Aussparung aufweisen, wobei in die Aussparungen der Rollen auf der der Umlenktrommel zugewandten Seite der flexiblen Führungseinrichtungen ein Führungsband angeordnet ist, dessen Dicke kleiner ist als die Tiefe der Aussparungen, daß am Schwenkrahmen gegenüber der aufnahmeseitigen Rolle des zweiten Bandförderers ein Umlenkelement angeordnet ist und daß die flexiblen Führungseinrichtungen zwischen der aufnahmeseitigen Rolle des zweiten Bandförderers und dem Umlenkelement hindurchgeführt sind.This object is achieved on the basis of the circular stack feeder of the generic type in that the second belt conveyor sits on a swivel frame which is on the feeder frame is articulated and biased towards the deflection drum belonging to the first belt conveyor, that the flexible guide devices form the sole means for pressing the sheet against the deflection drum and consist of a band of rollers arranged in parallel with one another, which have an annular recess in the central region of their longitudinal extent , wherein a guide belt is arranged in the recesses of the rollers on the side of the flexible guide means facing the deflecting drum, the thickness of which is smaller than the depth of the recesses, that a deflecting element is arranged on the swivel frame relative to the receiving-side roller of the second belt conveyor and that the flexible guide means are passed between the receiving-side roller of the second belt conveyor and the deflecting element.

Bei dem erfindungsgemäßen Rundstapelbogenanleger ermöglichen die flexiblen Führungseinrichtungen eine nahezu reibungsfreie Führung des Bogenstapels um die Umlenktrommel, so daß zwischen den beiden Seiten des Bogenstapels keine Relativgeschwindigkeit vorliegt, wodurch beim Umlenken und bei der Abgabe an den Entnahmetisch die Beibehaltung der gleichmäßigen Schuppung und somit die gleichmäßigen Bogenabstände gewährleistet sind. Durch die federnde Vorspannung des Schwenkrahmens in Richtung der Umlenktrommel, beispielsweise durch eine Gasfeder, und durch die federnd elastische Festlegung des unteren Endes der flexiblen Führungseinrichtungen ist eine automatische Anpassung an die jeweils aufgelegte Bogenstapelhöhe gewährleistet. Ferner wird die Führung des Bogenstapels durch die seitlich der Aussparung befindlichen Führungsabschnitte der Rollen nicht beeinträchtigt. Durch die Überdeckung der Spalte zwischen den Rollen im Bereich der Aussparungen wird vermieden, daß Bogenteile zwischen die Rollen gelangen können. Die an sich sehr geringe Reibung wird durch Reduzierung der Kontaktfläche der Rollen mit den Bogen weiter verringert, wobei ein Reibungskontakt zwischen dem Führungsband und den Bogen nicht stattfindet, da es innerhalb der Aussparungen liegt und aufgrund seiner geringeren Dicke sich nicht in den Umfangsbereich der seitlichen Führungsabschnitte der Rollen erstreckt.In the round stack sheet feeder according to the invention, the flexible guide devices enable the sheet stack to be guided around the deflection drum almost without friction, so that there is no relative speed between the two sides of the sheet stack, so that the deflection and the delivery to the removal table maintain the uniform scaling and thus the uniform sheet spacing are guaranteed. The resilient preload of the swivel frame in the direction of the deflection drum, for example by a gas spring, and the resiliently elastic fixing of the lower end of the flexible guide devices ensure automatic adaptation to the sheet stack height in each case. Furthermore, the guidance of the sheet stack is not impaired by the guide sections of the rollers located on the side of the recess. Covering the gap between the rollers in the area of the cutouts prevents that sheet parts can get between the rollers. The very low friction is further reduced by reducing the contact area of the rollers with the bends, and there is no frictional contact between the guide belt and the bends, since it lies within the recesses and, due to its smaller thickness, does not extend into the peripheral region of the lateral guide sections the roll extends.

Eine Anpassung an unterschiedliche Bogenstapelhöhen im Bereich des Einlaufhohlkeils zwischen dem oberen Auflegetisch und der Umlenktrommel ist dann besonders einfach, wenn die die oberen Enden der flexiblen Führungseinrichtungen haltende Stange an den einen Enden von Schwenkhebeln sitzen, die jeweils zwischen einem oberen Anschlag und einem unteren Anschlag, gegen den sie vorgespannt sind, verschwenkbar sind, und wenn die anderen Enden der Schwenkhebel am Anlegerrahmen angelenkt sind.Adaptation to different sheet stack heights in the area of the hollow inlet wedge between the upper lay-up table and the deflection drum is particularly simple when the rod holding the upper ends of the flexible guide devices is seated at one end of pivoting levers, each between an upper stop and a lower stop, against which they are biased, are pivotable, and when the other ends of the pivot lever are hinged to the feeder frame.

Eine alternative Lösung der der Erfindung zugrundeliegenden Aufgabe besteht darin, daß der zweite Bandförderer an einem Schwenkrahmen sitzt, der am Anlegerrahmen angelenkt und zu der zum ersten Bandförderer gehörenden Umlenktrommel hin vorgespannt ist, daß die flexiblen Führungseinrichtungen die alleinigen Einrichtungen zum Andrücken der Bogen an die Umlenktrommel bilden und aus Bändern aus reibungsarmem Kunststoff, wie Polytetrafluorethylen, bestehen, wobei jedes Band von zwei Lagen gebildet wird, von denen die der Umlenktrommel zugewandte Lage auf dem zweiten Bandförderer im Bereich seiner Aufnahme als Überleitband aufliegend angeordnet ist, daß am Schwenkrahmen gegenüber der aufnahmeseitigen Rolle des zweiten Bandförderers ein Umlenkelement angeordnet ist und daß die Bänder zwischen der aufnahmeseitigen Rolle des zweiten Bandförderers und dem Umlenkelement hindurchgeführt sind.An alternative solution to the object on which the invention is based is that the second belt conveyor is seated on a swivel frame which is articulated on the feeder frame and is biased towards the deflection drum belonging to the first belt conveyor, that the flexible guide devices are the sole means for pressing the sheet against the deflection drum form and consist of belts made of low-friction plastic, such as polytetrafluoroethylene, each belt being formed from two layers, of which the layer facing the deflection drum is arranged lying on the second belt conveyor in the area of its reception as a transfer belt, that on the swivel frame opposite the roll on the receiving side of the second belt conveyor a deflecting element is arranged and that the belts between the receiving-side roller of the second belt conveyor and the Deflection element are passed.

Zweckmäßigerweise sind zur Unterstützung der Bogenstapelführung im unteren Bereich der Umlenktrommel zwischen den flexiblen Führungseinrichtungen untere Leitstücke angeordnet, die sich von einer an Armen des Schwenkrahmens gehaltenen Stange zwischen die flexiblen Führungseinrichtungen erstrecken und tangential auf der Aufnahmeseite des zweiten Rollenförderers enden. Die räumliche Zuordnung der unteren Leitstücke zu dem zweiten Bandführer bei dessen Verschwenken aufgrund sich ändernder Bogenstapelhöhen bleibt dabei erhalten.To support the sheet stack guide, lower guide pieces are expediently arranged in the lower region of the deflection drum between the flexible guide devices, which extend from a rod held on the arms of the swivel frame between the flexible guide devices and end tangentially on the receiving side of the second roller conveyor. The spatial assignment of the lower guide pieces to the second belt guide when pivoting due to changing sheet stack heights is retained.

Vorteilhafterweise sind zwischen den flexiblen Führungseinrichtungen obere Leitstücke aus elastisch biegsamem Material angeordnet, die sich von der die oberen Enden der flexiblen Führungseinrichtungen haltende Stange zu den unteren Leitstücken erstrecken und sich an den jeweiligen Bogenstapel anpassend und ihn auf die unteren Leitstücke führend an diesen anlegen. Dies ermöglicht eine zusätzliche reibungsarme Führung des Bogenstapels im oberen Bereich der Umlenktrommel, wobei sich die oberen Leitstücke auf den unteren Leitstücken abhängig von der jeweiligen Bogenstapelhöhe verschieben können.Advantageously, between the flexible guide devices, upper guide pieces made of resiliently flexible material are arranged, which extend from the rod holding the upper ends of the flexible guide devices to the lower guide pieces and adapt to the respective sheet stack and guide it onto the lower guide pieces. This enables an additional low-friction guidance of the sheet stack in the upper region of the deflection drum, the upper guide pieces being able to move on the lower guide pieces depending on the respective sheet stack height.

Dabei sind die oberen und unteren Leitstücke vorzugsweise Bänder aus einem reibungsarmen Kunststoff.The upper and lower guide pieces are preferably strips made of a low-friction plastic.

Anhand von Zeichnungen wird ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigt:

Fig. 1
schematisch einen Rundstapelbogenanleger in der Seitenansicht ohne Bogenförderung, wobei eine Seitenwand des Anlegerrahmens weggelassen ist.
Fig. 2
in einer Ansicht wie Fig. 1 den Rundstapelbogenanleger in der Förderstellung eines Bogenstapels, der nicht gezeigt ist,
Fig. 3
die Ansicht III-III von Fig. 2,
Fig. 4
den Aufbau einer flexiblen Führungseinrichtung in der Seitenansicht,
Fig. 5
die flexible Führungseinrichtung von Fig. 4 in der Unteransicht und
Fig. 6
in einer Ansicht wie Fig. 1 eine Variante der flexiblen Führungseinrichtung.
An exemplary embodiment of the invention is explained in more detail with reference to drawings. It shows:
Fig. 1
schematically a round pile sheet feeder in side view without sheet conveying, with one side wall of the feeder frame being omitted.
Fig. 2
1 the round stack sheet feeder in the conveying position of a sheet stack, which is not shown,
Fig. 3
the view III-III of Fig. 2,
Fig. 4
the construction of a flexible guide device in the side view,
Fig. 5
the flexible guide device of FIG. 4 in the bottom view and
Fig. 6
in a view like FIG. 1, a variant of the flexible guide device.

Der in den Fig. 1 bis 3 gezeigte Rundstapelbogenanleger 1 hat einen Auflegetisch mit einem ersten Bandförderer 2, zu dem eine Umlenktrommel 3 und Rollen 4 und 5 gehören sowie ein nicht gezeigter Bandantrieb. Unterhalb der Umlenktrommel 3 ist ein Entnahmetisch mit einem zweiten Bandförderer 6 vorgesehen, dessen Förderband über Rollen 8, 9 und 10 geführt und durch einen nicht gezeigten Antrieb angetrieben ist.The round stack sheet feeder 1 shown in FIGS. 1 to 3 has a lay-on table with a first belt conveyor 2, which includes a deflection drum 3 and rollers 4 and 5, and a belt drive (not shown). Below the deflection drum 3 there is a removal table with a second belt conveyor 6, the conveyor belt of which is guided over rollers 8, 9 and 10 and driven by a drive (not shown) is.

Die Rollen 8, 9 und 10 sind an den Seitenteilen eines Schwenkrahmens 11 gelagert. Die Seitenteile sind im Bereich des abgabeseitigen Endes des zweiten Bandförderers 6 an den Seitenwänden des Anlegerrahmens 7 durch Schwenkzapfen 23 (Fig. 3) angelenkt und durch eine am Anlegerrahmen 7 verstellbar angreifende Gasfeder 44 in Richtung der Umlenktrommel 3 vorgespannt. Die Seitenteile des Schwenkrahmens 11 haben an ihrem der Anlenkung am Anlegerrahmen 7 gegenüberliegenden Ende jeweils einen sich nach oben erstreckenden Arm 12. Die Arme 12 der Seitenteile des Schwenkrahmens 11 sind durch eine Stange 14 verbunden. Im Abstand von der Rolle 8 in Richtung der Arme 12 sitzt an den Seitenteilen des Schwenkrahmens 11 fest oder drehbar ein Umlenkelement 13, das aus einer Rolle bestehen kann.The rollers 8, 9 and 10 are mounted on the side parts of a swivel frame 11. The side parts are articulated in the region of the discharge-side end of the second belt conveyor 6 on the side walls of the feeder frame 7 by pivot pins 23 (FIG. 3) and are biased in the direction of the deflection drum 3 by a gas spring 44 which can be adjusted to engage the feeder frame 7. The side parts of the swivel frame 11 each have an upwardly extending arm 12 at their end opposite the articulation on the feeder frame 7. The arms 12 of the side parts of the swivel frame 11 are connected by a rod 14. At a distance from the roller 8 in the direction of the arms 12, a deflection element 13, which can consist of a roller, is fixed or rotatable on the side parts of the swivel frame 11.

An jedem Seitenteil des Anlegerrahmens 7 ist mit Hilfe eines Schwenkzapfens 17 ein Schwenkhebel 15 angelenkt, der im Bereich seines dem Schwenkzapfen 17 gegenüberliegenden Endes eine die Schwenkhebel 15 verbindende Stange 16 trägt, an der im Abstand über der axialen Länge der Umlenktrommel 3 bandförmige, flexible, mit Rollen 32 (Fig. 4) versehene Führungseinrichtungen 18 angelenkt sind. Die flexiblen Führunsgeinrichtungen 18 bilden mit dem Auflegetisch des ersten Bandförderers 2 einen Einlaufhohlkeil für einen Bogenstapel. Die anderen Enden der flexiblen Führungseinrichtungen 18 sind über Federn 19 mit einer Stange 20 verbunden, die sich im unteren Bereich des Anlegerrahmens 7 zwischen dessen Seitenteilen erstreckt. Die flexiblen Führungseinrichtungen 18 sind zwischen der aufnahmeseitigen Rolle 8 des zweiten Bandförderers 6 und dem Umlenkelement 13 verschiebbar hindurchgeführt. In der in Fig. 1 gezeigten Stellung, in der kein Bogenstapel vorhanden ist, liegen die flexiblen Führungseinrichtungen 18 an dem Umlenkumfangsabschnitt der Umlenktrommel 3 an, während sie bei der in Fig. 2 gezeigten Stellung für die Bogenförderung sich durch Dehnung der Federn 19 an eine vorgegebene Bogenstapelhöhe automatisch angepaßt haben. In dieser Stellung ist der Schwenkrahmen 11 durch Zusammendrücken der Gasfeder 44 nach unten entsprechend der Bogenstapelhöhe verschwenkt.A pivot lever 15 is articulated on each side part of the feeder frame 7 with the aid of a pivot pin 17, which carries in the area of its end opposite the pivot pin 17 a rod 16 connecting the pivot lever 15, on which band-shaped, flexible, guide devices 18 provided with rollers 32 (FIG. 4) are articulated. The flexible guide devices 18 form, with the lay-up table of the first belt conveyor 2, a hollow inlet wedge for a sheet stack. The other ends of the flexible guide devices 18 are connected via springs 19 to a rod 20 which extends in the lower region of the feeder frame 7 between its side parts. The flexible guide devices 18 are slidably guided between the receiving-side roller 8 of the second belt conveyor 6 and the deflection element 13. In the position shown in FIG. 1, in which there is no stack of sheets, the flexible guide devices lie 18 on the deflection circumferential section of the deflection drum 3, while in the position for the sheet conveyance shown in FIG. 2 they have automatically adapted to a predetermined sheet stack height by stretching the springs 19. In this position, the pivot frame 11 is pivoted downward by compressing the gas spring 44 in accordance with the height of the sheet stack.

Wie insbesondere aus Fig. 3 zu ersehen ist, sind zwischen den flexiblen Führungseinrichtungen 18 zusätzliche Führungen vorgesehen. Jede dieser Führungen hat ein unteres Leitstück 22, das an der die Arme 12 verbindenden Stange 14 befestigt ist, die sich auf der Höhe der Mitte der Umlenktrommel 3 oder etwas darunter befindet, und das mit seinem anderen Ende tangierend auf dem oberen, den Bogenstapel aufnehmendem Trum des zweiten Bandförderers 6 aufliegt. Da sich die unteren Leitstücke 22 durch Halterung am Schwenkrahmen 11 in der gleichen Weise wie der zweite Bandförderer 6 abhängig von der Bogenstapelhöhe verschwenken, ergibt sich nur eine geringe Verschiebung der unteren Leitstücke 22 im Bereich ihres Auflagenendes auf den zweiten Bandförderer 6, was von der Durchbiegung aufgrund der vorgegebenen Bogenstapelhöhe abhängt, wodurch die Länge der unteren Leitstücke 22 kurz ist und demgemäß die Reibung so gering wie möglich gehalten ist.As can be seen in particular from FIG. 3, additional guides are provided between the flexible guide devices 18. Each of these guides has a lower guide piece 22, which is attached to the rod 14 connecting the arms 12, which is located at the level of the center of the deflection drum 3 or slightly below, and with its other end tangent to the upper, receiving the sheet stack Runs of the second belt conveyor 6 rests. Since the lower guide pieces 22 pivot by mounting on the swivel frame 11 in the same way as the second belt conveyor 6 depending on the sheet stack height, there is only a slight displacement of the lower guide pieces 22 in the area of their support end on the second belt conveyor 6, which is due to the deflection depends on the predetermined sheet stack height, whereby the length of the lower guide pieces 22 is short and accordingly the friction is kept as low as possible.

An der die Schwenkhebel 15 verbindenden oberen Stange 16, an der die flexiblen Führungseinrichtungen 18 angelenkt sind, sind zwischen den flexiblen Führungseinrichtungen 18 in Zuordnung zu den unteren Leitstücken 22 obere Leitstücke 21 befestigt, die mit ihrem anderen Ende auf den unteren Leitstücken 22 tangierend aufliegen. Bei der in Fig. 1 gezeigten Stellung, in der kein Bogenstapel gefördert wird, erstrecken sich die oberen Leitstücke 21 bis zur Aufnahmeseite des zweiten Bandförderers 6, bei der in Fig. 2 gezeigten Stellung, in der ein nicht gezeigter Bogenstapel gefördert wird, erstrecken sich die oberen Leitstücke 21 in der Kontaktebene der flexiblen Führungseinrichtungen 18 mit dem Bogenstapel, sind jedoch, um den Verlauf zeigen zu können, in Fig. 2 etwas nach rechts verschoben dargestellt. Das untere Ende der oberen Leitstücke 21 hat sich dabei auf den unteren Leitstücken 22 verschoben, wobei seine Leitfläche tangierend in die Leitfläche des unteren Leitstücks 22 übergeht. Die oberen Leitstücke 21 und die unteren Leitstücke 22 bestehen aus Polytetrafluorethylenbändern oder aus Federbandstahl.On the upper rod 16 connecting the swivel levers 15, to which the flexible guide devices 18 are articulated, upper guide pieces 21 are attached between the flexible guide devices 18 in association with the lower guide pieces 22, which rest with their other end tangent on the lower guide pieces 22. In the position shown in Fig. 1, in which no sheet stack is conveyed, the upper guide pieces 21 extend to the receiving side of the second belt conveyor 6, in which 2, in which a sheet stack, not shown, is conveyed, the upper guide pieces 21 extend in the contact plane of the flexible guide devices 18 with the sheet stack, but are to the right in FIG. 2 to show the course shown shifted. The lower end of the upper guide pieces 21 has shifted onto the lower guide pieces 22, its guide surface merging into the guide surface of the lower guide piece 22. The upper guide pieces 21 and the lower guide pieces 22 are made of polytetrafluoroethylene tapes or spring steel.

Wie aus Fig. 3 zu ersehen ist, ist das rollenförmige Umlenkelement 13 an den Seitenteilen des Schwenkrahmens 11 über Stangenzapfen 27 gehalten, während die Rolle 8 des zweiten Bandförderers 6 über Rollenzapfen 30 gelagert ist. Die Umlenktrommel 3 ist über Achszapfen 28 an den Seitenteilen des Anlegerrahmens 7 gelagert. Die Auslenkung der an den Seitenteilen des Anlegerrahmens 7 über Schwenkzapfen 17 gelagerten Schwenkhebels 15 ist nach unten durch einen auslegerrahmenseitigen Anschlag 26 und nach oben entgegen der Vorspannung einer Feder 24 durch einen oberen Anschlag 25 begrenzt.As can be seen from FIG. 3, the roller-shaped deflection element 13 is held on the side parts of the swivel frame 11 by means of rod journals 27, while the roller 8 of the second belt conveyor 6 is supported by roller journals 30. The deflection drum 3 is supported on the side parts of the feeder frame 7 via axle journals 28. The deflection of the pivot lever 15 mounted on the side parts of the feeder frame 7 via pivot pin 17 is limited at the bottom by a stop 26 on the side of the boom frame and at the top against the bias of a spring 24 by an upper stop 25.

Der obere Auslegetisch ist durch einen um die Achse der Rolle 5 verschwenkbaren dritten Bandförderer 29 aus der in Fig. 1 gezeigten Ruhestellung in die in Fig. 2 gezeigte Arbeitsstellung verschwenkbar.The upper delivery table can be pivoted from the rest position shown in FIG. 1 into the working position shown in FIG. 2 by means of a third belt conveyor 29 which can be pivoted about the axis of the roller 5.

Der Aufbau der flexiblen Führungseinrichtungen 18 ist im einzelnen in Fig. 4 und 5 gezeigt. Die flexible Führungseinrichtung 18 ist mit einem oberen Haltestück 38 mit Hilfe einer Klemmschraube 31 an der die Schwenkhebel 15 verbindenden oberen Stange 16 festlegbar. Das obere Haltestück 38 ist über einen Endbolzen 37 gelenkig mit der flexiblen Führungseinrichtung 18 verbunden. Am unteren Ende ist an der flexiblen Führungseinrichtung 18 über einen weiteren Endbolzen 37 ein unteres Haltestück 39 angelenkt, das eine Bohrung 40 aufweist, an der die Feder 19 für die Befestigung der Stange 20 (Fig. 1), angebracht werden kann. Die flexible Führungseinrichtung 18 besteht aus Rollen 32, die in bekannter Weise durch Laschen 35 und Bolzen 36 so verbunden sind, daß die einzelnen Rollen 32 drehbar sind und die Lagen ihrer Achsen zueinander entsprechend dem Umfang der Umlenktrommel 3 oder in Anpassung an die Bogenstapelhöhe veränderbar sind.The structure of the flexible guide devices 18 is shown in detail in FIGS. 4 and 5. The flexible guide device 18 can be fixed with an upper holding piece 38 by means of a clamping screw 31 on the upper rod 16 connecting the pivoting levers 15. The upper holding piece 38 is articulated with an end bolt 37 connected to the flexible guide device 18. At the lower end, a lower holding piece 39 is articulated on the flexible guide device 18 via a further end bolt 37, which has a bore 40 to which the spring 19 for fastening the rod 20 (FIG. 1) can be attached. The flexible guide device 18 consists of rollers 32, which are connected in a known manner by tabs 35 and bolts 36 so that the individual rollers 32 are rotatable and the positions of their axes can be changed relative to one another in accordance with the circumference of the deflection drum 3 or in adaptation to the sheet stack height .

Die Rollen 32 bestehen aus einem reibungsarmen Kunststoff und haben in ihrem zentralen Bereich eine sich über den ganzen Umfang erstreckende Aussparung 33. In dieser Aussparung ist ein in Fig. 4 und 5 gestrichelt gezeigtes Führungsband 41 auf der der Umlenktrommel 3 zugeordneten Seite angeordnet, dessen Dicke geringer ist als die Tiefe der Aussparungen 33. Dadurch werden die Spalte zwischen den Rollen 32 im Bereich der Aussparungen 33 überdeckt, so daß keine Bogenabschnitte in diese Spalte gelangen können. Ein Reibungskontakt zwischen dem Führungsband 41 findet nicht statt, da der Bogenstapel nur mit den seitlich der Aussparungen 33 vorhandenen Führungsabschnitten 34 der Rollen 32 in Kontakt steht.The rollers 32 are made of a low-friction plastic and have in their central region a recess 33 which extends over the entire circumference. In this recess, a guide band 41 shown in broken lines in FIGS. 4 and 5 is arranged on the side assigned to the deflection drum 3, the thickness of which is less than the depth of the cutouts 33. As a result, the gaps between the rollers 32 are covered in the area of the cutouts 33, so that no arc sections can get into this column. There is no frictional contact between the guide belt 41 since the sheet stack is only in contact with the guide sections 34 of the rollers 32 which are present on the side of the cutouts 33.

Als flexible Führungseinrichtungen 18 können auch Bänder aus einem reibungsarmen Kunststoff, wie Polytetrafluorethylen, verwendet werden. Bei der in Fig. 6 gezeigten Variante besteht jede flexible Führungseinrichtung 18 aus einem zwei Lagen 18a und 18b aufweisenden Band. Die der Umlenktrommel 3 zugewandte innere Lage 18b wird nicht wie die äußere Lage 18a um das Umlenkelement 13 zur Stange 20 sondern als Überleitband auf den zweiten Bandförderer 6 geführt, auf dem es in seinem Aufnahmebereich aufliegt.Belts made of a low-friction plastic, such as polytetrafluoroethylene, can also be used as flexible guide devices 18. In the variant shown in FIG. 6, each flexible guide device 18 consists of a band having two layers 18a and 18b. The inner layer 18b facing the deflection drum 3 is not guided like the outer layer 18a around the deflection element 13 to the rod 20 but as a transfer belt to the second belt conveyor 6, on which it rests in its receiving area.

Claims (6)

  1. Feeding device for a stack of sheets along a curved path, with a feeding device frame (7), on which an upper depositing table, which can be loaded with stacks of irregular sheets and has a first conveyor belt (2), with rollers (4,3); a guide drum (3); a lower discharge table, which has a second conveyor belt (6) with rollers (8,9), the pick-up side of which belt (6) being arranged opposite the discharging section of the first conveyor belt, and flexible guide devices (18), arranged at a distance from one another, which devices press the sheet against the guide drum in a manner adapted to the height of the existing stack of sheets, which are held with one of their ends above the upper depositing table, wherein the guide devices form a hollow inlet wedge with the guide drum, and which, at their lower ends over resiliently extensible elements (13), are in each case connected to the feeding device frame (13), characterised in that the second conveyor belt (6) is mounted on a pivot frame (11), which is articulated to the feed device frame (7) and is pretensioned (44) in the direction of the guide drum (3) belonging to the first conveyor belt; in that that the flexible guide devices (18) form the only devices for pressing the sheets against the guide drum (3) and consist of a line of rolls (32) arranged parallel to one another, which have an annular recess (33) in the centre area of their length, wherein a guide belt (41) is disposed in the recesses (33) of the rolls (32) on the side of the flexible guide devices (18) opposite the guide drum (3), the thickness of which guide belt is less than the depth of the recesses (33); in that a guide element (13) is disposed on the pivoting frame (11) opposite the roll (8) on the pick-up side of the second conveyor belt (6); and in that the guide devices (18) are guided between the roll (8) of the second conveyor belt (6) on the pick-up side and the guide element (13).
  2. Feeding device for a stack of sheets along a curved path according to claim 1, characterised in that the rod (16) retaining the upper ends of the flexible guide elements (18) is mounted at one end of pivot levers (15), each of which may be pivoted between a upper stop (25) and a lower stop (26), against which they are pretensioned; and in that the other ends of the pivot levers (15) are articulated (17) to the feed device frame (17).
  3. Feeding device for a stack of sheets along a curved path, with feeding device frame (7), on which an upper depositing table, which can be loaded with stacks of irregular sheets and has a first conveyor belt (2), with rollers (4,5), a guide drum (3), a lower discharge table, which has a second conveyor belt (6) with rollers (8,9), the pick-up side of which belt (6) is arranged opposite the discharging section of the first conveyor belt, and flexible guide devices (18), arranged at a distance from one another, which devices press the sheets against the guide drum in a manner adapted to the height of the existing stack of sheets, which are held with one of their ends above the upper depositing table, wherein the guide devices form a hollow inlet wedge with the guide drum and at their lower ends over resiliently extensible elements (13) are in each case connected to the feeding device frame (13), characterised in that second conveyor belt (6) is mounted on a pivot frame (11), which is articulated to the feed device frame (7) and is pretensioned (44) in the direction of the guide drum (3) belonging to the first conveyor belt; in that the flexible guide devices form the only devices for pressing the sheets against the guide drum (3) and consist of strips (18) of low-friction plastics material, such as polytetraflouroethylene, wherein each strip (18) is formed of two layers (18a, 18b), of which the layer (18b) which faces the guide drum (3) is located on the second conveyor belt (6), in the pick-up area thereof, as a transfer belt; in that on the pivot frame (11), opposite the roll (8) of the second conveyor belt (6) on the pick-up side, there is located a guide element (13); and in that the strips (18) are guided between the roll (8) of the second conveyor belt (6) on the pick-up side and the guide element (13).
  4. Feeding device for a stack of sheets along a curved path according to one of claims 1 to 3, characterised in that, to support the guiding of the sheet stack, lower guide pieces (22) are disposed in the lower area of the guide drum (3) between the flexible guide devices (18), which guide pieces extend from a rod (14) retained on the arms (12) of the pivot frame (11), between the flexible guide devices (18) and terminate tangentially on the pick-up side of the second roller conveyor (6).
  5. Feeding device for a stack of sheets along a curved path according to claim 4, characterised in that upper guide pieces (21) of resiliently flexible material are disposed between the flexible guide devices (18), which guide pieces extend from the rod (16) holding the upper ends of the flexible guide devices (18) to the lower guide pieces (22) and abut on the stack of sheets in an appropriate manner in each case, and such that they guide the stack onto the lower guide pieces (22).
  6. Feeding device for a stack of sheets along a curved path according to claim 4 or 5, characterised in that the upper and lower guide pieces (21,22) are belts made of a low-friction plastics material.
EP88114057A 1987-09-25 1988-08-29 Feeding device for a stack of sheets along a curved path Expired - Lifetime EP0308688B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3732419 1987-09-25
DE3732419A DE3732419C1 (en) 1987-09-25 1987-09-25 Round pile sheet feeder

Publications (3)

Publication Number Publication Date
EP0308688A2 EP0308688A2 (en) 1989-03-29
EP0308688A3 EP0308688A3 (en) 1989-05-10
EP0308688B1 true EP0308688B1 (en) 1992-04-15

Family

ID=6336918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114057A Expired - Lifetime EP0308688B1 (en) 1987-09-25 1988-08-29 Feeding device for a stack of sheets along a curved path

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US (1) US4928953A (en)
EP (1) EP0308688B1 (en)
DE (2) DE3732419C1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9006385U1 (en) * 1990-06-06 1990-08-16 Maschinenbau Oppenweiler Binder Gmbh & Co, 7155 Oppenweiler, De
JP3059992B2 (en) * 1991-09-30 2000-07-04 株式会社日立製作所 Paper sheet conveying device and automatic cash handling device using the same
US5169489A (en) * 1991-10-21 1992-12-08 Moore Business Forms, Inc. Stacked table top pressure sealer system
DE19734768C1 (en) * 1997-08-11 1998-12-17 Binder & Co Masch Oppenweiler Circulating sheet stack applicator
WO2003089350A1 (en) * 2002-04-19 2003-10-30 General Binding Corporation Inverter for sheet processing system
NL1025159C2 (en) * 2003-12-31 2005-07-04 Neopost Sa Device for transporting sheets along a conveyor track with a bend extending around a conveyor roller.
CN102642382A (en) * 2012-04-16 2012-08-22 天津长荣印刷设备股份有限公司 Transmission device and working method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE547813C (en) * 1930-02-15 1932-03-30 E H Georg Spiess Dr Ing Device for the automatic creation of the foremost sheet of one of the printing machines. Like. staggered sheet stack fed
GB604653A (en) * 1945-12-13 1948-07-07 Albert Edward Gamlen Improvements in sheet feeding devices for printing, embossing, cutting and like machines
DE1015822B (en) * 1953-12-18 1957-09-19 Georg Spiess Dr Ing Method and device for removing individual sheets of paper or the like from a stack and for forwarding them to a processing machine, e.g. Folding machine
US3271026A (en) * 1964-07-01 1966-09-06 Rca Corp Document stacking device
DE1960543A1 (en) * 1968-12-17 1970-10-29 Polygraph Leipzig Pile turning device for round pile sheet feeder
DE2724617C2 (en) * 1977-06-01 1985-05-23 Maschinenbau Oppenweiler Gmbh, 7155 Oppenweiler Round pile sheet feeder
SE406075B (en) * 1978-04-03 1979-01-22 Hugin Kassaregister Ab DEVICE FOR FEEDING AND Stacking forms in one compartment
DE3134862A1 (en) * 1981-09-03 1983-03-10 Stahl Gmbh & Co Maschinenfabrik, 7140 Ludwigsburg Rotary feeder

Also Published As

Publication number Publication date
US4928953A (en) 1990-05-29
DE3732419C1 (en) 1989-01-19
DE3870122D1 (en) 1992-05-21
EP0308688A3 (en) 1989-05-10
EP0308688A2 (en) 1989-03-29

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