EP0748290B1 - Paper sheet stacker - Google Patents

Paper sheet stacker Download PDF

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Publication number
EP0748290B1
EP0748290B1 EP95906321A EP95906321A EP0748290B1 EP 0748290 B1 EP0748290 B1 EP 0748290B1 EP 95906321 A EP95906321 A EP 95906321A EP 95906321 A EP95906321 A EP 95906321A EP 0748290 B1 EP0748290 B1 EP 0748290B1
Authority
EP
European Patent Office
Prior art keywords
stack
stacking
platform
sheets
auxiliary
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
EP95906321A
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German (de)
French (fr)
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EP0748290A1 (en
Inventor
Ernst Claassen
Frank Matthias Schmid
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.)
Voith Paper Jagenberg GmbH
Original Assignee
Jagenberg Papiertechnik GmbH
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Publication date
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Publication of EP0748290A1 publication Critical patent/EP0748290A1/en
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Classifications

    • 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
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4225—Handling piles, sets or stacks of articles in or on special supports
    • B65H2301/42256—Pallets; Skids; Platforms with feet, i.e. handled together with the stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/113—Details of the part distributing the air cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard

Definitions

  • the invention relates to a device for stacking sheets, in particular shingled sheets of paper, with a vertically movable storage platform and an auxiliary stacking platform that can be horizontally moved into the stacking area by means of a travel drive.
  • the stacking device For stacking sheets of paper, a generic device is known from EP-B 0 316 568, with which a change of a full stack can be carried out without the supply of the sheets to the stacking point having to be interrupted or sheets having to be removed.
  • the stacking device has an auxiliary stacking platform which can be moved into the stacking area in order to hold the upper part of the stack while the lower part of the stack is being transported away.
  • the auxiliary stacking platform consists of a trolley of low height, which is rotated in the conveying direction by a low-friction cloth and can be moved horizontally by means of a travel drive. So that it can be inserted into the stack, a gap is previously formed between the trailing edges of the sheet.
  • the auxiliary stacking platform was formed by a solid steel plate, which must be made so stable that it is able to bear the weight of the upper stack part. This leads to large working widths (more than 2000 mm) Deflection due to the weight of the steel plate, so that the entry gap between the sheet edges must be increased. The enlarged gap leads to negative effects, in particular to the fact that the stack part above the auxiliary stacking platform moves on the pallet when it is transferred to it. Furthermore, the massive steel plate as a large part requires complex mechanical processing.
  • DE-A-2 736 832 discloses a device for continuously laying out flat formats made of paper, cardboard and film material on pallets for use in the printing industry, in which stacking is carried out on an intermediate plate during a pallet change in order to store the No need to interrupt the bow.
  • the intermediate plate consists of a hollow profile frame in which hollow profile cross members are inserted at a distance from one another, on which a cover plate is fastened. Outlet openings for compressed air run through the cover plate, which end in the hollow profile cross members and are closed with ball valves.
  • the intermediate plate described is unsuitable for use on a generic stacking device for shingled sheets of paper, since it cannot be inserted into a stack. They can only be used on devices in which the sheets are transported at a distance from one another and are also held by grippers in order to prevent the sheet from being carried along when it is inserted.
  • the invention has for its object to provide a device for stacking shingled sheets of paper with an auxiliary stacking platform that can be moved into a stack with little friction, has as little weight as possible and is easily adaptable to different lengths of the storage platform.
  • the auxiliary stacking platform consists of two spaced-apart longitudinal beams on which a row of transverse lamellae made of a flat hollow profile are fastened next to one another, which are connected to a compressed air supply and have a row of air outlet openings on their top, the transverse lamellae being covered on their upper side by a thin cover plate which has openings covering the air outlet openings of the transverse lamellae and which forms a pointed edge on the entry side.
  • the device shown in FIG. 1 is used to deposit scaly paper or cardboard sheets 1 onto a stack 2 which is formed on a pallet 3.
  • the pallet 3 lies on a vertically movable storage platform 5 in the rack 4 of the stacking device, which is continuously lowered during stacking so that the top of the stack 2 is kept at a constant small distance from the feed plane 6 of the sheets 1.
  • the known stacking elements side shaking plates 7 stop boards 8) are arranged.
  • an auxiliary stacking platform 9 which can be moved into the stacking area, is arranged on the inlet side, onto which stacking takes place while a finished stack 2 is being transported away. So that the auxiliary stacking platform 9 can be moved into the stack without upsetting or damaging sheets 1, a gap between the trailing sheet edges is first formed by a separating device 10.
  • the sheet pack located above the auxiliary stacking platform 9 is clamped and held by two clamping beams, each with a row of tongue-shaped clamp elements 11, 12, while the auxiliary stacking platform 9 is moved into the stack 2.
  • the auxiliary stacking platform 9 can be moved horizontally into the stacking area by means of a travel drive 13 and can be moved back out of it in a carriage 14 which is suspended on the upstream stands 15 of the frame 4 and on which the clamp elements 11, 12 are also mounted horizontally such that they can be moved between the rear edges of the sheets 1 in the stack 2.
  • the structure of the auxiliary stacking platform 9 is shown in more detail in FIGS. 2 to 4:
  • the auxiliary stacking platform 9 consists of two longitudinal beams 16, 17 made of a hollow profile with a rectangular cross-section, which extends horizontally in the carriage 14 on both long sides of the frame outside the maximum working width in the carriage 14 and are mounted to be horizontally movable by means of the travel drive 13.
  • the air supply tubes 19, 20 consist of an open U-profile to the fins 18 or of a square tube that is slotted on the corresponding side.
  • the transverse lamellae 18 have a width (measured in the direction of sheet travel) of 50 mm to 150 mm, preferably approximately 80 mm, and their height is approximately 20 mm.
  • each lamella 18 On its flat upper side, each lamella 18 has a series of nozzle-shaped air outlet openings 21 over its length, which - as shown in FIG. 4 - can be opened and closed in each case by means of a ball valve 22.
  • the ball 23 of a ball valve 22 is seated in a nozzle 24 which tapers conically towards the top and has side air inlets. It is pressed by a spring 25 into the closed position, in which its circumference protrudes from the top of the auxiliary stacking platform 9.
  • the slats 18 are covered by a thin cover plate 26 which has corresponding openings 27 at the positions of the air outlet openings 21.
  • the cover plate 26 forms a pointed edge 28 on the entry side, which enables problem-free entry between the trailing edges of the sheet in the stack 2. It is preferably low-friction on its top, e.g. coated with PTFE.
  • the covering of the slats 18 has the advantage that when entering the stack 2, the air cushion effect increases, which reduces the friction so that no upsetting or displacements of sheets 1 occur in the stack 2.
  • the stacking device according to FIG. 1 works as follows:
  • the top of the stack 2 is kept at a constant height below the feed plane 6 by lowering the storage platform 5 accordingly. If the preselected number of sheets is stacked, the separating element 10 first moves in between the sheet trailing edges at the level of the feed plane. It then moves downwards with the stack 2 until the height of the lower clamp elements 12 is reached. It stops there so that a gap below the separating element 10 is formed by further lowering the stack 2. The clip elements 12 move into this gap. At the same time, the carriage 14 begins to move downwards in synchronization with the stack 2.
  • the separating element 10 is then moved out of the stack 2 again and moves up again in order to form a gap for the upper clamp elements 11 in a corresponding manner. After these are inserted between the trailing edge of the sheet, a sheet packet is clamped between the clamp elements 11, 12.
  • a gap is formed below the lower clamp elements 12, into which the auxiliary stack platform 9 is inserted.
  • the weight of the stack 2 presses the balls 23 of the valves 22 downward in the area covered by the sheets 1 and thus opens the valves 22. Compressed air emerges which is fed to the fins 18 via the pipes 19, 20.
  • the escaping compressed air creates an air cushion which minimizes the friction between the lowermost sheet 1 of the stack part lying thereon and the upper side of the auxiliary stacking platform 9.
  • the auxiliary stacking platform 9 now carries the upper part of the stack, while the finished stack 2 located below it is lowered onto the floor and transported away. After placing a new, empty pallet 3, the storage platform 5 is raised until the new pallet 3 is below the auxiliary stacking platform 9. If during the movement of the pallet 3 to the auxiliary stacking platform 9 damage, e.g. B. fear from upstanding nails, the underside of the slats 18 is covered by a thin fender.
  • damage e.g. B. fear from upstanding nails
  • the auxiliary stacking platform 9 is moved back out of the stacking area and thereby transfers the partial stack formed on it to the pallet 3 the valves 22 automatically. Until the next stack change, the sheets 1 are stacked directly on the pallet 3.
  • the construction of the auxiliary stacking platform 9 from individual lamellae 18 ensures great stability with a relatively low weight even with large working widths, e.g. B. more than 2000 mm. There is no deflection due to the dead weight of the auxiliary stacking platform 9, so that the gap between the trailing edge of the sheet required for retraction can be kept very small. Larger gaps have the disadvantage that the stack part located above the auxiliary stacking platform 9 is displaced somewhat when transferred to the pallet 3. Furthermore, the modular construction of the auxiliary stacking platform 9 made of lamellae 18 enables a structurally simple adaptation to different stack lengths.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Devices for stacking overlappingly-fed paper sheets (1) with a vertically movable support platform (5) and an auxiliary stacking platform (9) that may be horizontally moved into the stacking area by means of a drive are known. In these devices, sheets are stacked while a finished stack is carried away. According to the invention, the auxiliary stacking platform (9) consists of two spaced apart horizontal longitudinal beams (17, 17) that extend in the feeding direction of the sheets and to which a series of transverse blades (18) made of a flat hollow section are secured next to each other. The transverse blades (18) are connected to a compressed air supply and have a row of air outlets (21) on their top side.

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Vorrichtung zum Stapeln von Bögen, insbesondere von geschuppt zugeförderten Papierbögen, mit einer vertikal bewegbaren Ablageplattform und einer mittels eines Fahrantriebs horizontal in den Stapelbereich einfahrbaren Hilfsstapelplattform.The invention relates to a device for stacking sheets, in particular shingled sheets of paper, with a vertically movable storage platform and an auxiliary stacking platform that can be horizontally moved into the stacking area by means of a travel drive.

Stand der TechnikState of the art

Zum Stapeln von Papierbögen ist aus der EP-B 0 316 568 eine gattungsgemäße Vorrichtung bekannt, mit der sich ein Wechsel eines vollen Stapels durchführen läßt, ohne daß die Zufuhr der Bögen zur Stapelstelle unterbrochen werden muß oder Bögen ausgeschleust werden müssen. Dazu weist die Stapelvorrichtung eine Hilfsstapelplattform auf, die in den Stapelbereich eingefahren werden kann, um den oberen Stapelteil zu halten, während der untere Teil des Stapels abtransportiert wird.For stacking sheets of paper, a generic device is known from EP-B 0 316 568, with which a change of a full stack can be carried out without the supply of the sheets to the stacking point having to be interrupted or sheets having to be removed. For this purpose, the stacking device has an auxiliary stacking platform which can be moved into the stacking area in order to hold the upper part of the stack while the lower part of the stack is being transported away.

Die Hilfsstapelplattform besteht aus einem Wagen geringer Höhe, der von einem reibungsarmen Tuch in Förderrichtung umlaufen wird und mittels eines Fahrantriebs horizontal verfahrbar ist. Damit sie in den Stapel eingefahren werden kann, wird vorher zwischen den Bogenhinterkanten eine Lücke gebildet.The auxiliary stacking platform consists of a trolley of low height, which is rotated in the conveying direction by a low-friction cloth and can be moved horizontally by means of a travel drive. So that it can be inserted into the stack, a gap is previously formed between the trailing edges of the sheet.

In der Praxis wurde die Hilfsstapelplattform von einer massiven Stahlplatte gebildet, die so stabil ausgeführt werden muß, daß sie in der Lage ist, das Gewicht des oberen Stapelteils zu tragen. Bei großen Arbeitsbreiten (mehr als 2000 mm) führt dies zu Durchbiegungen aufgrund des Eigengewichts der Stahlplatte, so daß die Einfahrlücke zwischen den Bogenkanten vergrößert werden muß. Die vergrößerte Lücke führt zu negativen Effekten, insbesondere dazu, daß sich der Stapelteil oberhalb der Hilfsstapelplattform bei der Übergabe auf die Palette auf dieser versetzt. Weiterhin erfordert die massive Stahlplatte als Großteil eine aufwendige mechanische Bearbeitung.In practice, the auxiliary stacking platform was formed by a solid steel plate, which must be made so stable that it is able to bear the weight of the upper stack part. This leads to large working widths (more than 2000 mm) Deflection due to the weight of the steel plate, so that the entry gap between the sheet edges must be increased. The enlarged gap leads to negative effects, in particular to the fact that the stack part above the auxiliary stacking platform moves on the pallet when it is transferred to it. Furthermore, the massive steel plate as a large part requires complex mechanical processing.

Aus der DE-A-2 736 832 ist eine Vorrichtung zum kontinuierlichen Auslegen von flächigen Formaten aus Papier-, Karton- und Folienmaterial auf Paletten zur Anwendung in der Druckereibranche bekannt, bei der während eines Palettenwechsels auf eine Zwischenplatte gestapelt wird, um die Ablage der Bogen nicht unterbrechen zu müssen. Die Zwischenplatte besteht aus einem Hohlprofilrahmen, in den mit Abstand voneinander Hohlprofiltraversen eingesetzt sind, auf denen eine Abdeckplatte befestigt ist. Durch die Abdeckplatte verlaufen Austrittsöffnungen für Druckluft, die in den Hohlprofiltraversen enden und mit Kugelventilen verschlossen sind. Durch Zufuhr von Druckluft in die Hohlprofiltraversen läßt sich oberhalb der Abdeckplatte ein Druckpolster erzeugen, um den Hilfsstapel anzuheben, damit die Zwischenplatte herausgezogen und der auf ihr gebildete Hilfsstapel auf eine neue Palette abgelegt wird. Die beschriebene Zwischenplatte ist zum Einsatz an einer gattungsgemäßen Stapelvorrichtung für geschuppt zugeförderte Papierbögen ungeeignet, da sie nicht in einen Stapel eingefahren werden kann. Ihr Einsatz ist nur an Vorrichtungen möglich, bei denen die Bögen mit Abstand voneinander antransporiert und zudem von Greifern festgehalten werden, um eine Mitnahme des Bogens beim Einschieben zu verhindern.DE-A-2 736 832 discloses a device for continuously laying out flat formats made of paper, cardboard and film material on pallets for use in the printing industry, in which stacking is carried out on an intermediate plate during a pallet change in order to store the No need to interrupt the bow. The intermediate plate consists of a hollow profile frame in which hollow profile cross members are inserted at a distance from one another, on which a cover plate is fastened. Outlet openings for compressed air run through the cover plate, which end in the hollow profile cross members and are closed with ball valves. By supplying compressed air to the hollow cross-members, a pressure cushion can be generated above the cover plate to raise the auxiliary stack so that the intermediate plate is pulled out and the auxiliary stack formed on it is placed on a new pallet. The intermediate plate described is unsuitable for use on a generic stacking device for shingled sheets of paper, since it cannot be inserted into a stack. They can only be used on devices in which the sheets are transported at a distance from one another and are also held by grippers in order to prevent the sheet from being carried along when it is inserted.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Stapeln von geschuppt zugeförderten Papierbögen mit einer Hilfsstapelplattform zu schaffen, die sich reibungsarm in einen Stapel einfahren läßt, möglichst wenig Gewicht aufweist und einfach auf verschiedene Längen der Ablageplattform angepaßbar ist.The invention has for its object to provide a device for stacking shingled sheets of paper with an auxiliary stacking platform that can be moved into a stack with little friction, has as little weight as possible and is easily adaptable to different lengths of the storage platform.

Diese Aufgabe wird dadurch gelöst, daß die Hilfsstapelplattform aus zwei mit Abstand voneinander angeordneten Längsträgern besteht, an denen eine Reihe von Querlamellen aus einem flachen Hohlprofil unmittelbar aufeinanderfolgend nebeneinander befestigt sind, die an eine Druckluftzufuhr angeschlossen sind und an ihrer Oberseite eine Reihe von Luftaustrittsöffnungen aufweisen, wobei die Querlamellen auf ihrer Oberseite von einem dünnen Abdeckblech abgedeckt sind, das sich mit den Luftaustrittsöffnungen der Querlamellen deckende Öffnungen aufweist und an der Einfahrseite eine spitze Kante bildet.This object is achieved in that the auxiliary stacking platform consists of two spaced-apart longitudinal beams on which a row of transverse lamellae made of a flat hollow profile are fastened next to one another, which are connected to a compressed air supply and have a row of air outlet openings on their top, the transverse lamellae being covered on their upper side by a thin cover plate which has openings covering the air outlet openings of the transverse lamellae and which forms a pointed edge on the entry side.

Die Unteransprüchen enthalten bevorzugte, da besonders vorteilhafte Ausgestaltungen der Erfindung.The subclaims contain preferred, since particularly advantageous, embodiments of the invention.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Figur 1Figure 1
zeigt in Seitenansicht eine Stapelvorrichtung mit der erfindungsgemäßen Hilfsstapelplattform.shows a side view of a stacking device with the auxiliary stacking platform according to the invention.
Figur 2Figure 2
zeigt in perspektivischer, teilweise geschnittener Ansicht die Hilfsstapelplattform.shows a perspective, partially sectioned view of the auxiliary stacking platform.
Figur 3Figure 3
zeigt vergrößert den Ausschnitt X von Figur 2.shows enlarged section X of Figure 2.
Figur 4Figure 4
zeigt einen Längsschnitt durch den Bereich der Einfahrspitze.shows a longitudinal section through the area of the entry tip.
Weg zur Ausführung der ErfindungWay of carrying out the invention

Die in Figur 1 gezeigte Vorrichtung dient zum Ablegen von geschuppt zugeförderten Papier- oder Kartonbögen 1 auf einen Stapel 2, der auf einer Palette 3 gebildet wird. Die Palette 3 liegt auf einer vertikal bewegbar im Gestell 4 der Stapelvorrichtung gelagerten Ablageplattform 5, die während des Stapelns kontinuierlich so abgesenkt wird, daß die Oberseite des Stapels 2 in einem konstant geringen Abstand zu der Zuförderebene 6 der Bögen 1 gehalten wird. Im Bereich des Stapels 2 sind die bekannten Stapelbildungselemente (Seitenschüttelbleche 7 Anschlagbretter 8) angeordnet.The device shown in FIG. 1 is used to deposit scaly paper or cardboard sheets 1 onto a stack 2 which is formed on a pallet 3. The pallet 3 lies on a vertically movable storage platform 5 in the rack 4 of the stacking device, which is continuously lowered during stacking so that the top of the stack 2 is kept at a constant small distance from the feed plane 6 of the sheets 1. In the area of the stack 2, the known stacking elements (side shaking plates 7 stop boards 8) are arranged.

Für einen verlustlosen Stapelwechsel ohne Verminderung der Ablegegeschwindigkeit ist an der Einlaufseite eine in den Stapelbereich einfahrbare Hilfsstapelplattform 9 angeordnet, auf die gestapelt wird, während ein fertiger Stapel 2 abtransportiert wird. Damit die Hilfsstapelplatttorm 9 ohne Stauchung oder Beschädigung von Bögen 1 in den Stapel bewegt werden kann, wird zunächst von einer Trenneinrichtung 10 eine Lücke zwischen den Bogenhinterkanten gebildet. Zusätzlich wird der oberhalb von der Hilfsstapelplattform 9 befindliche Bogenpacken von zwei Klemmbalken mit jeweils einer Reihe zungenförmiger Klammerelemente 11, 12 eingeklemmt und gehalten, während die Hilfsstapelplattform 9 in den Stapel 2 bewegt wird.For a lossless stack change without reducing the depositing speed, an auxiliary stacking platform 9, which can be moved into the stacking area, is arranged on the inlet side, onto which stacking takes place while a finished stack 2 is being transported away. So that the auxiliary stacking platform 9 can be moved into the stack without upsetting or damaging sheets 1, a gap between the trailing sheet edges is first formed by a separating device 10. In addition, the sheet pack located above the auxiliary stacking platform 9 is clamped and held by two clamping beams, each with a row of tongue-shaped clamp elements 11, 12, while the auxiliary stacking platform 9 is moved into the stack 2.

Die Hilfsstapelplattform 9 ist mittels eines Fahrantriebs 13 horizontal in den Stapelbereich einfahrbar und aus diesem zurückfahrbar in einem Schlitten 14 gelagert, der an den einlaufseitigen Ständern 15 des Gestells 4 aufgehängt ist und an dem auch die Klammerelemente 11, 12 horizontal so gelagert sind, daß sie zwischen die Hinterkanten der Bögen 1 im Stapel 2 bewegt werden können. Der Aufbau der Hilfsstapelplattform 9 ist in den Figuren 2 bis 4 detaillierter dargestellt:The auxiliary stacking platform 9 can be moved horizontally into the stacking area by means of a travel drive 13 and can be moved back out of it in a carriage 14 which is suspended on the upstream stands 15 of the frame 4 and on which the clamp elements 11, 12 are also mounted horizontally such that they can be moved between the rear edges of the sheets 1 in the stack 2. The structure of the auxiliary stacking platform 9 is shown in more detail in FIGS. 2 to 4:

Die Hilfsstapelplattform 9 besteht aus zwei Längsträgern 16, 17 aus einem Hohlprofil mit rechteckigem Querschnitt, die im Schlitten 14 an beiden Längsseiten des Gestells außerhalb der maximalen Arbeitsbreite sich horizontal in Bogenlaufrichtung erstrekkend und mittels des Fahrantriebs 13 horizontal bewegbar gelagert sind. Auf der Oberseite der Längsträger 16, 17 sind unmittelbar aufeinanderfolgend eine Reihe von Querlamellen 18 aus einem flachen Hohlprofil befestigt, die mit ihren offenen Stirnseiten an Luftzuführungsrohre 19, 20 angeschlossen sind, die auf den Oberseiten der Längsträger 16, 17 parallel zu diesen verlaufend befestigt und an eine Druckluftzufuhr angeschlossen sind. Die Luftzuführungsrohre 19, 20 bestehen aus einem zu den Lamellen 18 offenen U-Profil oder aus einem Vierkantrohr, das an der entsprechenden Seite geschlitzt ist.The auxiliary stacking platform 9 consists of two longitudinal beams 16, 17 made of a hollow profile with a rectangular cross-section, which extends horizontally in the carriage 14 on both long sides of the frame outside the maximum working width in the carriage 14 and are mounted to be horizontally movable by means of the travel drive 13. On the top of the side members 16, 17, a series of transverse lamellae 18 are fastened from a flat hollow profile, which are connected with their open end faces to air supply pipes 19, 20 which are attached to the top sides of the side members 16, 17 and run parallel to them are connected to a compressed air supply. The air supply tubes 19, 20 consist of an open U-profile to the fins 18 or of a square tube that is slotted on the corresponding side.

Die Querlamellen 18 weisen eine (in Bogenlaufrichtung gemessene) Breite von 50 mm bis 150 mm, bevorzugt ca. 80 mm, auf, und ihre Höhe beträgt ca. 20 mm. An ihrer ebenen Oberseite weist jede Lamelle 18 über ihre Länge eine Reihe von düsenförmig ausgestalteten Luftaustrittsöffnungen 21 auf, die - wie in Figur 4 dargestellt - jeweils über ein Kugelventil 22 geöffnet und verschlossen werden können. Die Kugel 23 eines Kugelventils 22 sitzt in einem konisch in Richtung zur Oberseite zulaufenden Stutzen 24 mit seitlichen Lufteinlässen. Sie wird von einer Feder 25 in die Schließstellung gepreßt, in der ihr Umfang aus der Oberseite der HilfsStapelplattform 9 herausragt. Beim Einfahren der Lamellen 18 in den Stapel 2 wird sie von dem Gewicht des oberen Teils des Stapels 2 nach unten gedrückt, so daß Druckluft durch die Austrittsöffnung 21 austritt.The transverse lamellae 18 have a width (measured in the direction of sheet travel) of 50 mm to 150 mm, preferably approximately 80 mm, and their height is approximately 20 mm. On its flat upper side, each lamella 18 has a series of nozzle-shaped air outlet openings 21 over its length, which - as shown in FIG. 4 - can be opened and closed in each case by means of a ball valve 22. The ball 23 of a ball valve 22 is seated in a nozzle 24 which tapers conically towards the top and has side air inlets. It is pressed by a spring 25 into the closed position, in which its circumference protrudes from the top of the auxiliary stacking platform 9. When the slats 18 are moved into the stack 2, the weight of the upper part of the stack 2 pushes them down, so that compressed air exits through the outlet opening 21.

An ihrer Oberseite sind die Lamellen 18 von einem dünnen Abdeckblech 26 abgedeckt, das an den Positionen der Luftaustrittsöffnungen 21 entsprechende Öffnungen 27 aufweist. Das Abdeckblech 26 bildet an der Einfahrseite eine spitze Kante 28, die ein problemloses Einfahren zwischen die Bogenhinterkanten im Stapel 2 ermöglicht. Es ist bevorzugt auf seiner Oberseite reibungsarm, z.B. mit PTFE, beschichtet. Die Abdeckung der Lamellen 18 hat den Vorteil, daß sich beim Einfahren in den Stapel 2 der Luftkisseneffekt vergrößert, der die Reibung so verringert, daß keine Stauchungen oder Verschiebungen von Bögen 1 im Stapel 2 auftreten.On their upper side, the slats 18 are covered by a thin cover plate 26 which has corresponding openings 27 at the positions of the air outlet openings 21. The cover plate 26 forms a pointed edge 28 on the entry side, which enables problem-free entry between the trailing edges of the sheet in the stack 2. It is preferably low-friction on its top, e.g. coated with PTFE. The covering of the slats 18 has the advantage that when entering the stack 2, the air cushion effect increases, which reduces the friction so that no upsetting or displacements of sheets 1 occur in the stack 2.

Die Stapelvorrichtung nach Figur 1 arbeitet wie folgt:The stacking device according to FIG. 1 works as follows:

Während des Stapelns wird die Oberseite des Stapels 2 durch entsprechendes Absenken der Ablageplattform 5 auf einer konstanten Höhe unterhalb der Zuförderebene 6 gehalten. Ist die vorgewählte Anzahl der Bögen gestapelt, fährt zunächst das Trennelement 10 in Höhe der Zuförderebene zwischen die Bogenhinterkanten ein. Es bewegt sich anschließend mit dem Stapel 2 nach unten, bis die Höhe der unteren Klammerelemente 12 erreicht ist. Dort hält es an, so daß sich durch weiteres Absenken des Stapels 2 eine Lücke unterhalb des Trennelements 10 bildet. In diese Lücke fahren die Klammerelemente 12 ein. Gleichzeitig beginnt sich der Schlitten 14 synchron mit dem Stapel 2 nach unten zu bewegen.During stacking, the top of the stack 2 is kept at a constant height below the feed plane 6 by lowering the storage platform 5 accordingly. If the preselected number of sheets is stacked, the separating element 10 first moves in between the sheet trailing edges at the level of the feed plane. It then moves downwards with the stack 2 until the height of the lower clamp elements 12 is reached. It stops there so that a gap below the separating element 10 is formed by further lowering the stack 2. The clip elements 12 move into this gap. At the same time, the carriage 14 begins to move downwards in synchronization with the stack 2.

Das Trennelement 10 wird danach wieder aus dem Stapel 2 bewegt und fährt erneut nach oben, um auf entsprechende Weise eine Lücke für die oberen Klammerelemente 11 zu bilden. Nachdem diese zwischen die Bogenhinterkanten eingefahren sind, wird ein Bogenpaket zwischen den Klammerelementen 11, 12 festgeklemmt. Durch kurzzeitiges beschleunigtes Absenken des Stapels 2 bildet sich nun unterhalb der unteren Klammerelemente 12 eine Lücke, in die die Hilfsstapelplattform 9 eingefahren wird. Beim Einfahren drückt das Gewicht des Stapels 2 die Kugeln 23 der Ventile 22 in dem von Bögen 1 abgedeckten Bereich nach unten und öffnet so die Ventile 22. Es tritt Druckluft aus, die über die Rohre 19, 20 den Lamellen 18 zugeführt wird. Die austretende Druckluft erzeugt ein die Reibung zwischen dem untersten Bogen 1 des aufliegenden Stapelteils und der Oberseite der Hilfsstapelplattform 9 minimierendes Luftkissen.The separating element 10 is then moved out of the stack 2 again and moves up again in order to form a gap for the upper clamp elements 11 in a corresponding manner. After these are inserted between the trailing edge of the sheet, a sheet packet is clamped between the clamp elements 11, 12. By briefly accelerating the lowering of the stack 2, a gap is formed below the lower clamp elements 12, into which the auxiliary stack platform 9 is inserted. When moving in, the weight of the stack 2 presses the balls 23 of the valves 22 downward in the area covered by the sheets 1 and thus opens the valves 22. Compressed air emerges which is fed to the fins 18 via the pipes 19, 20. The escaping compressed air creates an air cushion which minimizes the friction between the lowermost sheet 1 of the stack part lying thereon and the upper side of the auxiliary stacking platform 9.

Die Hilfsstapelplattform 9 trägt nun den oberen Stapelteil, während der sich unter ihr befindliche, fertige Stapel 2 auf den Boden abgesenkt und abtransportiert wird. Nach Auflegen einer neuen, leeren Palette 3 wird die Ablageplattform 5 angehoben, bis sich die neue Palette 3 unterhalb der Hilfsstapelplattform 9 befindet. Falls bei der Bewegung der Palette 3 an die Hilfsstapelplattform 9 Beschädigungen, z. B. durch hochstehende Nägel, zu befürchten sind, wird die Unterseite der Lamellen 18 von einem dünnen Schutzblech abgedeckt.The auxiliary stacking platform 9 now carries the upper part of the stack, while the finished stack 2 located below it is lowered onto the floor and transported away. After placing a new, empty pallet 3, the storage platform 5 is raised until the new pallet 3 is below the auxiliary stacking platform 9. If during the movement of the pallet 3 to the auxiliary stacking platform 9 damage, e.g. B. fear from upstanding nails, the underside of the slats 18 is covered by a thin fender.

Anschließend wird die Hilfsstapelplattform 9 aus dem Stapelbereich zurückgefahren und übergibt dabei den auf ihr gebildeten Teilstapel an die Palette 3. Dabei schließen sich die Ventile 22 selbstätig. Bis zum nächsten Stapelwechsel werden die Bögen 1 wieder direkt auf die Palette 3 gestapelt.Subsequently, the auxiliary stacking platform 9 is moved back out of the stacking area and thereby transfers the partial stack formed on it to the pallet 3 the valves 22 automatically. Until the next stack change, the sheets 1 are stacked directly on the pallet 3.

Der Aufbau der Hilfsstapelplattform 9 aus einzelnen Lamellen 18 gewährleistet eine große Stabilität bei relativ geringem Gewicht auch bei großen Arbeitsbreiten, z. B. mehr als 2000 mm. Es tritt keine Durchbiegung aufgrund des Eigengewichts der Hilfsstapelplattform 9 auf, so daß die für das Einfahren erforderliche Lücke zwischen den Bogenhinterkanten sehr klein gehalten werden kann. Größere Lücken haben den Nachteil, daß sich der oberhalb der Hilfsstapelplattform 9 befindliche Stapelteil bei der Übergabe auf die Palette 3 etwas versetzt. Weiterhin wird durch den modulartigen Aufbau der Hilfsstapelplattform 9 aus Lamellen 18 eine konstruktiv einfache Anpassung an verschiedene Stapellängen ermöglicht.The construction of the auxiliary stacking platform 9 from individual lamellae 18 ensures great stability with a relatively low weight even with large working widths, e.g. B. more than 2000 mm. There is no deflection due to the dead weight of the auxiliary stacking platform 9, so that the gap between the trailing edge of the sheet required for retraction can be kept very small. Larger gaps have the disadvantage that the stack part located above the auxiliary stacking platform 9 is displaced somewhat when transferred to the pallet 3. Furthermore, the modular construction of the auxiliary stacking platform 9 made of lamellae 18 enables a structurally simple adaptation to different stack lengths.

Claims (4)

  1. Device for the stacking of continuous fed sheets of paper (1) using a vertically movable depositing platform (5) and using an auxiliary stacker platform (9) insertable horizontally into the stacking zone by means of a motional drive (13), characterised in that the auxiliary stacker platform (9) comprises two longitudinal bearers (16, 17) arranged at distance from each other, on to which are directly attached successively a series of transverse laminations (18) made of shallow hollow profile one next to the other, which are connected to a compressed air supply and featuring on their upper face a series of air outlet orifices (21), wherein the transverse laminations (18) are covered on their upper face by a thin cover plate (26), which features orifices (27) coinciding with the air outlet orifices (21) of the transverse laminations and form a sharp pointed edge 28) at the insertion end.
  2. Device according to claim 1, characterised in that the width of the transverse laminations (18) measured in the direction of the sheet conveyance amounts to 50 mm - 150 mm.
  3. Device according to claim 1 or 2, characterised in that the compressed air supply into the transverse laminations (18) is effected by way of pipes (19, 20), which, running parallel to the longitudinal bearers (16, 17), are attached to these.
  4. Device according to claims 1 to 3, characterised in that the air outlet orifices (21) are sealed in each instance by a ball valve (22), which is automatically opened during insertion into the stack (2) by the weight of the upper part of the stack.
EP95906321A 1994-03-08 1995-01-10 Paper sheet stacker Expired - Lifetime EP0748290B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4407584 1994-03-08
DE4407584A DE4407584C2 (en) 1994-03-08 1994-03-08 Device for stacking sheets
PCT/EP1995/000069 WO1995024354A1 (en) 1994-03-08 1995-01-10 Paper sheet stacker

Publications (2)

Publication Number Publication Date
EP0748290A1 EP0748290A1 (en) 1996-12-18
EP0748290B1 true EP0748290B1 (en) 1997-11-26

Family

ID=6512090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95906321A Expired - Lifetime EP0748290B1 (en) 1994-03-08 1995-01-10 Paper sheet stacker

Country Status (5)

Country Link
EP (1) EP0748290B1 (en)
JP (1) JP2716590B2 (en)
DE (2) DE4407584C2 (en)
ES (1) ES2111391T3 (en)
WO (1) WO1995024354A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4440367C2 (en) * 1994-11-11 1996-08-29 Jagenberg Papiertech Gmbh Device for stacking sheets on pallets
DE29818894U1 (en) * 1998-10-23 2000-03-09 Roland Man Druckmasch Device for moving a stack of sheets horizontally
DE102021105729A1 (en) 2021-03-10 2022-09-15 Koenig & Bauer Ag Delivery for a sheet processing machine and method for changing piles in a delivery of a sheet processing machine
DE102021005218A1 (en) * 2021-10-19 2023-04-20 Giesecke+Devrient Currency Technology Gmbh Sheet material holder for holding sheet material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209924A (en) * 1957-07-02 1965-10-05 Southworth Machine Co Sheet transfer apparatus
US3140091A (en) * 1961-06-21 1964-07-07 Harris Intertype Corp Printing press delivery
DE2736832A1 (en) * 1977-08-16 1979-03-15 Mohn Gmbh Reinhard Paper sheet stacking system - uses intermediate pallet to forming auxiliary stack during changeover after which stack is raised for intermediate pallet removal
DE3711584A1 (en) * 1987-04-06 1988-10-27 Will E C H Gmbh & Co DEVICE FOR CROSS-RECEIVING STACKS OF LEAF-SHAPED MATERIAL
DE4131015C2 (en) * 1991-09-18 1995-10-05 Roland Man Druckmasch Sheet boom
DE4217816C2 (en) * 1992-05-29 1995-01-26 Heidelberger Druckmasch Ag Device for the continuous delivery of flat printed products

Also Published As

Publication number Publication date
EP0748290A1 (en) 1996-12-18
DE4407584C2 (en) 2002-09-26
WO1995024354A1 (en) 1995-09-14
JP2716590B2 (en) 1998-02-18
DE4407584A1 (en) 1995-09-14
JPH09503473A (en) 1997-04-08
DE59501043D1 (en) 1998-01-08
ES2111391T3 (en) 1998-03-01

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