EP0718231B1 - Device for stacking sheets, in particular for paper- or paperboard sheets which are fed in overlapping streams - Google Patents

Device for stacking sheets, in particular for paper- or paperboard sheets which are fed in overlapping streams Download PDF

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Publication number
EP0718231B1
EP0718231B1 EP95116607A EP95116607A EP0718231B1 EP 0718231 B1 EP0718231 B1 EP 0718231B1 EP 95116607 A EP95116607 A EP 95116607A EP 95116607 A EP95116607 A EP 95116607A EP 0718231 B1 EP0718231 B1 EP 0718231B1
Authority
EP
European Patent Office
Prior art keywords
sheets
separating
stacking
stacking area
stack
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
EP95116607A
Other languages
German (de)
French (fr)
Other versions
EP0718231A3 (en
EP0718231A2 (en
Inventor
Peter Voss
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jagenberg Papiertechnik GmbH filed Critical Jagenberg Papiertechnik GmbH
Publication of EP0718231A2 publication Critical patent/EP0718231A2/en
Publication of EP0718231A3 publication Critical patent/EP0718231A3/en
Application granted granted Critical
Publication of EP0718231B1 publication Critical patent/EP0718231B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H31/00—Pile receivers
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
    • B65H31/10—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another and applied at the top of the 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
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
    • B65H31/3063—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers by special supports like carriages, containers, trays, compartments, plates or bars, e.g. moved in a closed loop
    • 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
    • B65H2301/421—Forming a pile
    • B65H2301/4212—Forming a pile of articles substantially horizontal
    • 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
    • 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
    • B65H2301/4226—Delivering, advancing piles
    • B65H2301/42264—Delivering, advancing piles by moving the surface supporting the lowermost article of the pile, e.g. conveyor, carriage
    • 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
    • B65H2301/426—Forming batches
    • B65H2301/4262—Forming batches by inserting auxiliary support as defined in B65H31/32
    • B65H2301/42622—Forming batches by inserting auxiliary support as defined in B65H31/32 and using auxiliary means for facilitating introduction of the auxiliary support
    • 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 fed paper or cardboard sheets, where the sheets on pallets be stacked, which lie on a lifting and lowering storage platform.
  • the Separating element consists of several separating plates arranged at a distance from one another, whose free ends are unwound into separating fingers, which between the Trailing sheet edges are moved into the stack.
  • the gap between the trailing edges of the sheet is formed in which the stack is down relative to the separation fingers is moved.
  • the object of the invention is to simplify a generic device to be designed so that fewer machine parts are required.
  • the invention enables the use of a frictionally retractable stack Bar grates as an auxiliary stacking platform that does not require any additional clamp elements for the Running in needed.
  • the embodiment described below is used for stacking continuously in sheet form conveyed cardboard sheets 1 following one Cross cutting machine.
  • the sheets 1 are the stacking area by a belt conveyor 2 fed in a feed level that is sufficiently high that finished Stack 3 can be lowered and removed without the sheet feeding to have to interrupt.
  • the stacks 3 are formed on pallets 4, which on a Storage platform 5 are placed.
  • the storage platform 5 is in the frame 6 of the Stacking device on pull chains 7 up to the area of the feed level Arches 1 can be raised and hung down into the hallway.
  • a bar grate 8 is horizontal in as an auxiliary stacking platform the stacking area is stored in a retractable manner, on which the sheets 1 - as shown in FIG. 5 - be stacked in between while a finished stack 3 is being transported away.
  • the Bar grate 8 consists of individual, spaced-apart bars that extend in the direction of sheet travel.
  • the Rods with a diameter of approx. 30 mm and are at a distance of approx. 60 mm apart.
  • the vertical distance of the bar grate 8 from the Feed level of the sheets 1 is chosen so that the drop height of the sheets 1 as possible is small and at the same time such a large number of sheets 1 are stacked can that enough time for the removal of the finished stack 3 and Laying new pallets 4 is available.
  • the bulletin board 10 for the sheet leading edges is in Adjustable sheet running direction suspended in frame 6 and has cutouts, through which the tips of the bars of the bar grate 8 can be moved.
  • the side guide plates 11 are to adapt to different format lengths and widths Suspended in the frame 6 adjustable both in the longitudinal and in the transverse direction.
  • the separating element consists of a series of upwardly extending partitions 14 that span the working width are fastened at a distance from one another on a machine-wide traverse 15 and their ends angled to separating fingers 16 between the rear edges of the Sheets 1 can be pivoted into the stacking area.
  • the separating element 14, 16 is by means of a lifting mechanism acting on the cross member 15, in particular a pneumatic one Piston-cylinder unit 17, from a waiting position below the bar grate 8 ( Figure 1) so far that the separating fingers 16 are in the region of the feed plane located ( Figure 2).
  • the separating element 14, 16 is limited in the direction of Stack 3 and pivoted back so that the separating fingers 16 both between insert the sheet trailing edges in stack 3 as well as completely from stack 3 let it move back.
  • the partition plates 14 with the separation fingers 16 are on the Working width arranged on gap to the bars of the bar grate 8, so that the bar grate 8 independently of the separating element 14, 16 horizontally and the separating element 14, 16 moved independently of the bar grate 8 vertically in the required range can be. Collisions are excluded from the design.
  • the one in the vertical direction measured length of the partition plates 14 is greater than the vertical distance between the entry level of the bar grate 8 and the feed level of the sheets 1.
  • the conveyor section of the stacking area For transporting empty pallets 4 and for removing pallets 4 with finished stacks 3 is a floor conveyor 18, the conveyor section of the stacking area and additionally covers approximately the same area in front of and behind the stacking point.
  • FIG. 8 shows details of the area between the inlet-side stands 12 at the level of the feed level.
  • a rigid, extending vertically downwards from the feed plane extending plate 19 is arranged, which delimits the stacking area on the inlet side.
  • the Plate 19 has through openings 20 for the bars 21 of the bar grate 8 and offset to the passage openings 20 further recesses 22 in which the Parting finger 16 moved vertically from its waiting position to the feed plane can be.
  • the recesses 22 are sufficiently wide, because in addition to the Partitions 14 also arranged feed channels of marking strip insertion devices can be.
  • the plate 19 widens against the Direction of sheet travel. Your top 22 forms a guide surface in the feed plane the sheets 1.
  • lower ejection rollers 24 arranged together with the upper ejection rollers 9 and in the direction of sheet travel blowing blow nozzles 25 a safe transport of the sheets 1 in the stacking area guarantee.
  • the blowing nozzles 25 are in the plate 19 next to the lower ones Ejection rollers 24 arranged.
  • the fixed plate 19 forms with the side guide plates 11 and Message board 10 above the bar grate 8 on all sides for exact guidance sheets 1 and the intermediate stack.
  • This guide ensures an exact edge Storage of the sheets 1 and at the same time prevents when the bar grate 8 is moved back moving the intermediate stack when transferring it to the empty pallet 4.
  • FIGS. 1 to 7 The sequence of a stack change is shown in FIGS. 1 to 7:
  • FIG. 1 shows the stacking device immediately before a stack change is initiated.
  • the sheets 1 transported in scale form from the conveyor belt 2 are opened put down the stack 3, the top of which corresponds to the increase in height Lowering the storage platform 5 is kept at a constant height. Doing this shakes the bulletin board 10 for a precise storage on the leading edge of the sheet.
  • the Bar grate 8 is in its waiting position on the inlet side outside of Stacking area.
  • the separating element 14, 16 is lowered into its waiting position in the the separating fingers 16 are located at a distance below the bar grate 8.
  • Inlet side In front of the stacking area a new empty pallet 4 is ready on the floor conveyor 18.
  • the machine braked to a slower change speed Shortly before the predetermined number of sheets 1 is placed on the stack 3, is the machine braked to a slower change speed.
  • the belt conveyor 2 continues to feed sheets 1 to the stacking station without interruption.
  • the separating element 14, 16 is raised to the region of the feed plane.
  • the separation fingers pivot 16 between the sheet trailing edges and lay down on the stack 3. there separate the finished stack 3 from the following sheets 1 (FIG. 2).
  • the finished stack 3 is very quickly (with approx. 200 mm / s) to below the Entry level of the bar grate 8 is lowered, the separating element 14, 16 is moved downward from the stack 3.
  • the bar grate 8 is vertical stored stationary. To allow enough time for the removal of the full pallets 4 and having the transport of empty pallets 4, the machine will change slowed down. This is necessary because the maximum fall height of the arches 1 on the Stack 3 is limited for trouble-free stacking.
  • the maximum fall height corresponds to the maximum height of the Intermediate stack during a stack change, i.e. the vertical distance between the feed plane of the sheets 1 and the bar grate 8. To the machine as possible Having to slow down little, calculates a connected computing and Control unit depending on the required change time and the number of between stackable sheets the required speed reduction from and controls the machine accordingly.
  • the machine Bar grate 8 vertically movable over a certain distance by means of a hoist stored.
  • the bar grate 8 is corresponding to the during the intermediate stacking Increased height of the intermediate stack formed on it, so that the Problems with maximum drop height described above do not occur.
  • a vertically movable Bar grate 8 is also advantageous if slow delivery and removal systems for the Pallets 4 are available.
  • the invention has the further advantage that due to the few components between the upstream stands 12 space for marking devices is available, which after a insert a certain number of sheets 1 marking strip into the stack 3.
  • the Strip feed channels of the marking devices can run parallel to the separating plates 14 the space between the bars of the bar grate 8 up to the top of the stack out and insert marking strips in stack 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Stapeln von Bögen, insbesondere von geschuppt zugeförderten Papier- oder Kartonbögen, bei der die Bögen auf Paletten gestapelt werden, die auf einer heb- und senkbaren Ablageplattform aufliegen.The invention relates to a device for stacking sheets, in particular shingled fed paper or cardboard sheets, where the sheets on pallets be stacked, which lie on a lifting and lowering storage platform.

Aus der DE-PS 37 39 194 ist eine Vorrichtung der gattungsgemäßen Art bekannt, mit der sich ein Stapelwechsel ohne Unterbrechung der Bogenzufuhr und ohne Bogenverluste durchführen läßt. Bei einem Stapelwechsel wird auf eine von einem Blech gebildete Hilfsstapelplattform zwischengestapelt, während die Ablageplattform mit vollen Stapeln abgesenkt, die Stapel entladen und Leerpaletten aufgelegt werden. Die Hilfsstapelplattform wird zu Beginn des Stapelwechsels an der Einlaufseite und unterhalb der Zuförderebene der Bögen in den Stapelbereich gefahren. Damit keine Verschiebungen und/oder Stauchungen der Bögen beim Einfahren in den Stapel auftreten, werden vorher von einem Trennelement zwei Lücken zwischen den Bogenhinterkanten gebildet, in die Klemmelemente bewegt werden, um den oberhalb der Hilfsstapelplattform befindlichen Bogenpacken einzuklemmen und zu halten. Das Trennelement besteht aus mehreren mit Abstand voneinander angeordneten Trennblechen, deren freie Enden zu Trennfingern abgewickelt sind, die zwischen die Bogenhinterkanten in den Stapel bewegt werden. Die Lücke zwischen den Bogenhinterkanten wird gebildet, in dem der Stapel relativ zu den Trennfingern nach unten bewegt wird.From DE-PS 37 39 194 a device of the generic type is known with which a stack change without interrupting the sheet feed and without Losses can be carried out. When changing stacks, one is changed from one Sheet-formed auxiliary stacking platform interposed while the storage platform lowered with full stacks, the stacks unloaded and empty pallets placed. The auxiliary stacking platform is at the start of the stack change on the inlet side and moved into the stacking area below the feed level of the sheets. So that none Displacements and / or compression of the sheets when entering the stack occur, two gaps between the Arch trailing edges formed, in which clamping elements are moved to the above to clamp and hold sheet packs located on the auxiliary stacking platform. The Separating element consists of several separating plates arranged at a distance from one another, whose free ends are unwound into separating fingers, which between the Trailing sheet edges are moved into the stack. The gap between the trailing edges of the sheet is formed in which the stack is down relative to the separation fingers is moved.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung einfacher zu gestalten, so daß weniger Maschinenteile erforderlich sind. The object of the invention is to simplify a generic device to be designed so that fewer machine parts are required.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of patent claim 1.

Die Erfindung ermöglicht den Einsatz eines reibungsarm in den Stapel einfahrbaren Stabrosts als Hilfsstapelplattform, der keine zusätzlichen Klammerelemente für das Einfahren benötigt.The invention enables the use of a frictionally retractable stack Bar grates as an auxiliary stacking platform that does not require any additional clamp elements for the Running in needed.

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

Die Zeichnung dient zur Erläuterung der Erfindung anhand eines vereinfacht dargestellten Ausführungsbeispiels.

Figur 1
zeigt die Seitenansicht einer Stapelvorrichtung unmittelbar vor Einleitung des Stapelwechsels.
Figur 2
zeigt das Einlegen des Trennelements zwischen die Bogenhinterkanten.
Figur 3
zeigt die Bildung einer Lücke zwischen den Bogenhinterkanten.
Figur 4
zeigt das Einfahren des Stabrosts.
Figur 5
zeigt die Zwischenablage der Bögen auf den Stabrost, während die vollen Paletten abtransportiert und neue leere Paletten antransportiert werden.
Figur 6
zeigt die Übergabe des Zwischenstapels auf die neue Palette.
Figur 7
zeigt das Stapeln auf die neue Palette nach Beendigung des Stapelwechsels.
Figur 8
zeigt in vergrößerter perspektivischer Darstellung den Bereich mit Stabrost und Trennelement
The drawing serves to explain the invention with reference to an embodiment shown in simplified form.
Figure 1
shows the side view of a stacking device immediately before initiating the stack change.
Figure 2
shows the insertion of the separator between the trailing edges of the sheet.
Figure 3
shows the formation of a gap between the trailing edges of the sheet.
Figure 4
shows the retraction of the bar grate.
Figure 5
shows the clipboard of the sheets on the wire rack while the full pallets are being transported and new empty pallets are being transported.
Figure 6
shows the transfer of the intermediate stack to the new pallet.
Figure 7
shows the stacking on the new pallet after the stack change has been completed.
Figure 8
shows in an enlarged perspective view the area with bar grating and separating element

Das nachfolgend beschriebene Ausführungsbeispiel dient zum Stapeln von kontinuierlich in Schuppenform angeförderten Kartonbögen 1 im Anschluß an eine Querschneidemaschine. Die Bögen 1 werden dem Stapelbereich von einem Bandförderer 2 in einer Zuförderebene zugefördert, die ausreichend hoch ist, daß fertige Stapel 3 abgesenkt und abtransportiert werden können, ohne die Bogenzufuhr unterbrechen zu müssen. Die Stapel 3 werden auf Paletten 4 gebildet, die auf eine Ablageplattform 5 aufgelegt werden. Die Ablageplattform 5 ist im Gestell 6 der Stapelvorrichtung an Zugketten 7 bis in den Bereich der Zuförderebene der Bögen 1 anhebbar und bis in den Flurbereich absenkbar aufgehängt.The embodiment described below is used for stacking continuously in sheet form conveyed cardboard sheets 1 following one Cross cutting machine. The sheets 1 are the stacking area by a belt conveyor 2 fed in a feed level that is sufficiently high that finished Stack 3 can be lowered and removed without the sheet feeding to have to interrupt. The stacks 3 are formed on pallets 4, which on a Storage platform 5 are placed. The storage platform 5 is in the frame 6 of the Stacking device on pull chains 7 up to the area of the feed level Arches 1 can be raised and hung down into the hallway.

Unterhalb des Bandförderers 2 ist als Hilfsstapelplattform ein Stabrost 8 horizontal in den Stapelbereich einfahrbar gelagert, auf dem die Bögen 1 - wie in Figur 5 gezeigt - zwischengestapelt werden, während ein fertiger Stapel 3 abtransportiert wird. Der Stabrost 8 besteht aus einzelnen, mit Abstand voneinander angeordneten Stäben, die sich in Bogenlaufrichtung erstrecken. Im vorliegenden Ausführungsbeispiel haben die Stäbe einen Durchmesser von ca. 30 mm und sind mit einem Abstand von ca. 60 mm voneinander angeordnet. Der vertikale Abstand des Stabrosts 8 von der Zuförderebene der Bögen 1 ist so gewählt, daß die Fallhöhe der Bögen 1 möglichst gering ist und zugleich eine so große Anzahl von Bögen 1 zwischengestapelt werden kann, daß ausreichend Zeit für den Abtransport der fertigen Stapel 3 und zum Auflegen neuer Paletten 4 zur Verfügung steht.Below the belt conveyor 2, a bar grate 8 is horizontal in as an auxiliary stacking platform the stacking area is stored in a retractable manner, on which the sheets 1 - as shown in FIG. 5 - be stacked in between while a finished stack 3 is being transported away. The Bar grate 8 consists of individual, spaced-apart bars that extend in the direction of sheet travel. In the present embodiment, the Rods with a diameter of approx. 30 mm and are at a distance of approx. 60 mm apart. The vertical distance of the bar grate 8 from the Feed level of the sheets 1 is chosen so that the drop height of the sheets 1 as possible is small and at the same time such a large number of sheets 1 are stacked can that enough time for the removal of the finished stack 3 and Laying new pallets 4 is available.

Im Stapelbereich sind in Höhe der Zuförderebene obere Ausstoßrollen 9, ein in und gegen Bogenlaufrichtung schüttelbares Anschlagbrett 10 und Seitenführungsbleche 11 angeordnet, die auf bekannte Weise eine störungsfreie und kantengenaue Ablage der Bögen 1 gewährleisten. Das Anschlagbrett 10 für die Bogenvorderkanten ist in Bogenlaufrichtung verstellbar im Gestell 6 aufgehängt und weist Aussparungen auf, durch die die Spitzen der Stäbe des Stabrosts 8 bewegt werden können. Die Seitenführungsbleche 11 sind zur Anpassung an verschiedene Formatlängen und -breiten sowohl in Längs- als auch in Querrichtung verstellbar im Gestell 6 aufgehängt.In the stacking area there are upper discharge rollers 9, one in and at the level of the feed level Message board 10 and side guide plates which can be shaken against the direction of sheet travel 11 arranged in a known manner a trouble-free and accurate storage ensure the arches 1. The bulletin board 10 for the sheet leading edges is in Adjustable sheet running direction suspended in frame 6 and has cutouts, through which the tips of the bars of the bar grate 8 can be moved. The side guide plates 11 are to adapt to different format lengths and widths Suspended in the frame 6 adjustable both in the longitudinal and in the transverse direction.

Zwischen den einlaufseitigen Ständern 12 des Gestells 6 ist ein Trennelement im Freiraum zwischen dem von der auslaufseitigen Umlenkrolle 13 gebildeten Ende des Bandförderers 2 und dem Stapelbereich angeordnet. Das Trennelement besteht aus einer Reihe von sich nach oben erstreckenden Trennblechen 14, die über die Arbeitsbreite mit Abstand voneinander auf einer maschinenbreiten Traverse 15 befestigt sind und deren zu Trennfingern 16 abgewinkelten Enden zwischen die Hinterkanten der Bögen 1 in den Stapelbereich einschwenkbar sind. Das Trennelement 14, 16 ist mittels eines an der Traverse 15 angreifenden Hubwerks, insbesondere einer pneumatischen Kolben-Zylinder-Einheit 17, von einer Warteposition unterhalb des Stabrosts 8 (Figur 1) soweit anhebbar, daß sich die Trennfinger 16 im Bereich der Zuförderebene befinden (Figur 2). Zugleich ist das Trennelement 14, 16 begrenzt in Richtung zum Stapel 3 und zurück schwenkbar, so daß sich die Trennfinger 16 sowohl zwischen die Bogenhinterkanten im Stapel 3 einlegen als auch komplett aus dem Stapel 3 zurückbewegen lassen. Die Trennbleche 14 mit den Trennfingern 16 sind über die Arbeitsbreite jeweils auf Lücke zu den Stäben des Stabrosts 8 angeordnet, so daß der Stabrost 8 unabhängig vom Trennelement 14, 16 horizontal und das Trennelement 14, 16 unabhängig vom Stabrost 8 vertikal im erforderlichen Bereich bewegt werden kann. Kollisionen sind konstruktiv ausgeschlossen. Die in vertikaler Richtung gemessene Länge der Trennbleche 14 ist größer als der vertikale Abstand zwischen der Einfahrebene des Stabrosts 8 und der Zuförderebene der Bögen 1.Between the inlet side uprights 12 of the frame 6 is a separating element in the Free space between the end of the deflection roller 13 formed on the outlet side Belt conveyor 2 and the stacking area arranged. The separating element consists of a series of upwardly extending partitions 14 that span the working width are fastened at a distance from one another on a machine-wide traverse 15 and their ends angled to separating fingers 16 between the rear edges of the Sheets 1 can be pivoted into the stacking area. The separating element 14, 16 is by means of a lifting mechanism acting on the cross member 15, in particular a pneumatic one Piston-cylinder unit 17, from a waiting position below the bar grate 8 (Figure 1) so far that the separating fingers 16 are in the region of the feed plane located (Figure 2). At the same time, the separating element 14, 16 is limited in the direction of Stack 3 and pivoted back so that the separating fingers 16 both between insert the sheet trailing edges in stack 3 as well as completely from stack 3 let it move back. The partition plates 14 with the separation fingers 16 are on the Working width arranged on gap to the bars of the bar grate 8, so that the bar grate 8 independently of the separating element 14, 16 horizontally and the separating element 14, 16 moved independently of the bar grate 8 vertically in the required range can be. Collisions are excluded from the design. The one in the vertical direction measured length of the partition plates 14 is greater than the vertical distance between the entry level of the bar grate 8 and the feed level of the sheets 1.

Zum Antransport von leeren Paletten 4 und zum Abtransport von Paletten 4 mit fertigen Stapeln 3 dient ein Flurförderer 18, dessen Förderstrecke den Stapelbereich und zusätzlich jeweils etwa die gleiche Fläche vor und hinter der Stapelstelle abdeckt.For transporting empty pallets 4 and for removing pallets 4 with finished stacks 3 is a floor conveyor 18, the conveyor section of the stacking area and additionally covers approximately the same area in front of and behind the stacking point.

Die Figur 8 zeigt in vergrößerter Darstellung Details des Bereichs zwischen den einlaufseitigen Ständern 12 in Höhe der Zuförderebene. Im Anschluß an den Bandförderer 2 ist eine starre, sich von der Zuförderebene sich senkrecht nach unten erstreckende Platte 19 angeordnet, die den Stapelbereich einlaufseitig begrenzt. Die Platte 19 weist Durchtrittsöffnungen 20 für die Stäbe 21 des Stabrosts 8 und versetzt zu den Durchtrittsöffnungen 20 weitere Aussparungen 22 auf, in denen die Trennfinger 16 vertikal von ihrer Warteposition bis in die Zuförderebene bewegt werden können. Die Aussparungen 22 sind ausreichend breit, da in ihnen neben den Trennblechen 14 auch Zuführkanäle von Markierstreifeneinlegegeräten angeordnet werden können.FIG. 8 shows details of the area between the inlet-side stands 12 at the level of the feed level. Following the belt conveyor 2 is a rigid, extending vertically downwards from the feed plane extending plate 19 is arranged, which delimits the stacking area on the inlet side. The Plate 19 has through openings 20 for the bars 21 of the bar grate 8 and offset to the passage openings 20 further recesses 22 in which the Parting finger 16 moved vertically from its waiting position to the feed plane can be. The recesses 22 are sufficiently wide, because in addition to the Partitions 14 also arranged feed channels of marking strip insertion devices can be.

Oberhalb der Stäbe 21 des Stabrosts 8 verbreitert sich die Platte 19 gegen die Bogenlaufrichtung. Ihre Oberseite 22 bildet in der Zuförderebene eine Leitfläche für die Bögen 1. In Aussparungen der Oberseite 22 sind untere Ausstoßrollen 24 angeordnet, die gemeinsam mit den oberen Ausstoßrollen 9 und in Bogenlaufrichtung blasenden Blasdüsen 25 einen sicheren Transport der Bögen 1 in den Stapelbereich gewährleisten. Die Blasdüsen 25 sind in der Platte 19 jeweils neben den unteren Ausstoßrollen 24 angeordnet.Above the bars 21 of the bar grate 8, the plate 19 widens against the Direction of sheet travel. Your top 22 forms a guide surface in the feed plane the sheets 1. In the recesses in the upper side 22 there are lower ejection rollers 24 arranged together with the upper ejection rollers 9 and in the direction of sheet travel blowing blow nozzles 25 a safe transport of the sheets 1 in the stacking area guarantee. The blowing nozzles 25 are in the plate 19 next to the lower ones Ejection rollers 24 arranged.

Die feststehende Platte 19 bildet mit den Seitenführungsblechen 11 und dem Anschlagbrett 10 oberhalb des Stabrosts 8 an allen Seiten eine exakte Führung für die Bögen 1 und den Zwischenstapel. Diese Führung gewährleistet eine kantengenaue Ablage der Bögen 1 und verhindert zugleich beim Zurückfahren des Stabrosts 8 ein Versetzen des Zwischenstapels bei der Übergabe an die Leerpalette 4.The fixed plate 19 forms with the side guide plates 11 and Message board 10 above the bar grate 8 on all sides for exact guidance sheets 1 and the intermediate stack. This guide ensures an exact edge Storage of the sheets 1 and at the same time prevents when the bar grate 8 is moved back moving the intermediate stack when transferring it to the empty pallet 4.

Der Ablauf eines Stapelwechsels ist in den Figuren 1 bis 7 dargestellt:The sequence of a stack change is shown in FIGS. 1 to 7:

Figur 1 zeigt die Stapelvorrichtung unmittelbar vor Einleitung eines Stapelwechsels. Die in Schuppenform von dem Förderband 2 antransportierten Bögen 1 werden auf den Stapel 3 abgelegt, dessen Oberseite durch dem Höhenzuwachs entsprechendes Absenken der Ablageplattform 5 in konstanter Höhe gehalten wird. Dabei schüttelt das Anschlagbrett 10 für eine kantengenaue Ablage an den Bogenvorderkanten. Der Stabrost 8 befindet sich in seiner Warteposition an der Einlaufseite außerhalb des Stapelbereichs. Das Trennelement 14, 16 ist in seine Warteposition abgesenkt, in der sich die Trennfinger 16 mit Abstand unterhalb des Stabrosts 8 befinden. Einlaufseitig vor dem Stapelbereich liegt auf dem Flurförderer 18 eine neue Leerpalette 4 bereit.FIG. 1 shows the stacking device immediately before a stack change is initiated. The sheets 1 transported in scale form from the conveyor belt 2 are opened put down the stack 3, the top of which corresponds to the increase in height Lowering the storage platform 5 is kept at a constant height. Doing this shakes the bulletin board 10 for a precise storage on the leading edge of the sheet. The Bar grate 8 is in its waiting position on the inlet side outside of Stacking area. The separating element 14, 16 is lowered into its waiting position in the the separating fingers 16 are located at a distance below the bar grate 8. Inlet side In front of the stacking area, a new empty pallet 4 is ready on the floor conveyor 18.

Kurz bevor die vorgegebene Anzahl von Bögen 1 auf dem Stapel 3 abgelegt ist, wird die Maschine auf eine langsamere Wechselgeschwindigkeit abgebremst. Der Bandförderer 2 fördert weiterhin ohne Unterbrechung Bögen 1 zu der Stapelstelle. Gleichzeitig wird das Trennelement 14, 16 bis in den Bereich der Zuförderebene angehoben. Wenn die vorbestimmte Anzahl von Bögen 1 gestapelt ist, schwenken die Trennfinger 16 zwischen die Bogenhinterkanten und legen sich auf den Stapel 3 auf. Dabei trennen sie den fertigen Stapel 3 von den nachfolgenden Bögen 1 (Figur 2). Anschließend wird der fertige Stapel 3 sehr schnell (mit ca. 200 mm/s) bis unterhalb die Einfahrebene des Stabrosts 8 abgesenkt, wobei sich das Trennelement 14, 16 von dem Stapel 3 mit nach unten bewegt wird. Dazu ist der Druck in der Kolben-Zylinder-Einheit 17 so eingestellt, daß das Eigengewicht des Trennelements 14, 16 kompensiert wird. Die Bewegung der Trennfinger 16 nach unten wird unmittelbar oberhalb der Einfahrebene des Stabrosts 8 von einem einstellbaren mechanischen Anschlag gestoppt. Da der Stapel 3 noch ca. 40 mm weiter abgesenkt wird, bildet sich eine Lücke zwischen den Bogenhinterkanten, in die der Stabrost 8 einfahren kann (Figur 3). Gleichzeitig wird die Schüttelung des Anschlagbretts 10 abgestellt.Shortly before the predetermined number of sheets 1 is placed on the stack 3, is the machine braked to a slower change speed. The belt conveyor 2 continues to feed sheets 1 to the stacking station without interruption. At the same time the separating element 14, 16 is raised to the region of the feed plane. When the predetermined number of sheets 1 are stacked, the separation fingers pivot 16 between the sheet trailing edges and lay down on the stack 3. there separate the finished stack 3 from the following sheets 1 (FIG. 2). Subsequently the finished stack 3 is very quickly (with approx. 200 mm / s) to below the Entry level of the bar grate 8 is lowered, the separating element 14, 16 is moved downward from the stack 3. This is the pressure in the piston-cylinder unit 17 set so that the dead weight of the separating element 14, 16th is compensated. The movement of the separating fingers 16 downwards is immediate above the entry level of the bar grate 8 by an adjustable mechanical stop stopped. Since the stack 3 is lowered about 40 mm further, forms a gap between the trailing edges of the arch, in which the grate 8 can enter (Figure 3). At the same time, the shaking of the notice board 10 is stopped.

Sobald die Spitzen der Stäbe des Stabrosts 8 durch die Lücken zwischen den Trennblechen 14 in die Lücke zwischen den Bogenhinterkanten eingefahren sind, wird das Trennelement 14, 16 aus dem Stapelbereich geschwenkt und in seine Warteposition abgesenkt (Figur 4). Wenn der Stabrost 8 vollständig in den Stapelbereich eingefahren ist, wird die Ablageplattform 5 mit dem vollen Stapel 3 bis in den Flurbereich abgesenkt. Die volle Palette 4 wird in Bogenlaufrichtung aus dem Stapelbereich abtransportiert, zugleich wird eine neue leere Palette 4 in den Stapelbereich bewegt. Währenddessen wird auf dem Stabrost 8 ohne Unterbrechung der Bogenzufuhr zwischengestapelt (Figur 5). Die neue Leerpalette wird anschließend von der Ablageplattform 5 bis unterhalb des Stabrosts 8 angehoben (Figur 6). Durch Rückbewegung des Stabrosts 8 aus dem Stapelbereich wird der auf ihm gebildete Teilstapel an die Palette 4 übergeben (Figur 7). Dabei verhindert die exakt an den Seitenflächen des Zwischenstapels anliegenden Elemente (Platte 19, Seitenführungsbleche 11 und Anschlagbrett 10) ein Versetzen des Teilstapels bei der Übergabe. Der Wechselzyklus ist beendet, die Schüttelung des Anschlagbretts 10 wird wieder eingeschaltet und die Maschine wieder auf ihre Betriebsgeschwindigkeit beschleunigt.Once the tips of the bars of the bar grate 8 through the gaps between the Partitions 14 are inserted into the gap between the trailing edges of the sheet, the separating element 14, 16 is pivoted out of the stack area and into it Waiting position lowered (Figure 4). When the bar grate 8 is completely in the stacking area is retracted, the storage platform 5 with the full stack 3 into the Hallway area lowered. The full range 4 is in the sheet running direction from the Stacked area transported away, at the same time a new empty pallet 4 in the stacking area emotional. Meanwhile, on the bar grate 8 the Sheet feed stacked between (Figure 5). The new empty pallet will then be used by the storage platform 5 to below the bar grate 8 (Figure 6). By Return movement of the bar grate 8 from the stack area becomes that formed on it Transfer the partial stack to the pallet 4 (FIG. 7). This prevents exactly at the Side surfaces of the intermediate stack of adjacent elements (plate 19, side guide plates 11 and bulletin board 10) a displacement of the partial stack during the transfer. The change cycle is finished, the shaking of the bulletin board 10 will switched on again and the machine returned to its operating speed accelerates.

Bei der vorstehend beschriebenen Ausführungsform ist der Stabrost 8 vertikal ortsfest gelagert. Um ausreichend Zeit für den Abtransport der vollen Paletten 4 und den Antransport der Leerpaletten 4 zu haben, wird die Maschine beim Wechseln verlangsamt. Dies ist erforderlich, da die maximale Fallhöhe der Bögen 1 auf den Stapel 3 für ein störungsfreies Stapeln begrenzt ist. Die von der Empfindlichkeit des Papiers oder Kartons und dem Format abhängige maximale Fallhöhe beträgt ca. 300 mm bei Karton, bei sehr empfindlichen Papieren kann sie sich auf maximal 15 mm verringern. Der maximalen Fallhöhe entspricht die maximale Höhe des Zwischenstapels während eines Stapelwechsels, also der vertikale Abstand zwischen der Zuförderebene der Bögen 1 und dem Stabrost 8. Um die Maschine möglichst wenig verlangsamen zu müssen, errechnet eine angeschlossene Rechen- und Steuereinheit in Abhängigkeit von der erforderlichen Wechselzeit und der Anzahl der zwischenstapelbaren Bögen die erforderliche Geschwindigkeitsverminderung aus und steuert die Maschine entsprechend.In the embodiment described above, the bar grate 8 is vertical stored stationary. To allow enough time for the removal of the full pallets 4 and having the transport of empty pallets 4, the machine will change slowed down. This is necessary because the maximum fall height of the arches 1 on the Stack 3 is limited for trouble-free stacking. The sensitivity of the Paper or cardboard and the maximum height depending on the format approx. 300 mm for cardboard, for very sensitive papers it can be a maximum Decrease by 15 mm. The maximum fall height corresponds to the maximum height of the Intermediate stack during a stack change, i.e. the vertical distance between the feed plane of the sheets 1 and the bar grate 8. To the machine as possible Having to slow down little, calculates a connected computing and Control unit depending on the required change time and the number of between stackable sheets the required speed reduction from and controls the machine accordingly.

Damit ein Stapelwechsel ohne Verlangsamung der Ablagegeschwindigkeit durchgeführt werden kann, ist nach einer anderen Ausführungsform der Maschine der Stabrost 8 über eine gewisse Strecke mittels eines Hubwerks vertikal beweglich gelagert. Der Stabrost 8 wird während des Zwischenstapelns entsprechend dem Höhenzuwachs des auf ihm gebildeten Zwischenstapels abgesenkt, so daß die vorstehend beschriebenen Probleme mit der maximalen Fallhöhe nicht auftreten. Eine Verlangsamung der Ablagegeschwindigkeit ist nicht erforderlich, falls der Stabrost 8 entsprechend der sich auf ihm bildenden Höhe des Zwischenstapels während des An- und Abtransports der Paletten 4 abgesenkt werden kann. Ein vertikal beweglicher Stabrost 8 ist auch vorteilhaft, falls langsame An- und Abtransportsysteme für die Paletten 4 vorhanden sind.So that a stack change is carried out without slowing down the storage speed can be, is according to another embodiment of the machine Bar grate 8 vertically movable over a certain distance by means of a hoist stored. The bar grate 8 is corresponding to the during the intermediate stacking Increased height of the intermediate stack formed on it, so that the Problems with maximum drop height described above do not occur. A It is not necessary to slow down the deposit speed if the bar grate 8 according to the height of the intermediate stack formed on it during the arrival and Removal of the pallets 4 can be lowered. A vertically movable Bar grate 8 is also advantageous if slow delivery and removal systems for the Pallets 4 are available.

Die Erfindung hat den weiteren Vorteil, daß aufgrund der wenigen Bauteile zwischen den einlaufseitigen Ständern 12 Platz für Markiergeräte vorhanden ist, die nach einer bestimmten Anzahl von Bögen 1 Markierstreifen in den Stapel 3 einlegen. Die Streifenzuführkanäle der Markiergeräte können parallel zu den Trennblechen 14 durch den Zwischenraum zwischen den Stäben des Stabrosts 8 bis an die Stapeloberseite geführt werden und dort Markierstreifen in den Stapel 3 einlegen.The invention has the further advantage that due to the few components between the upstream stands 12 space for marking devices is available, which after a insert a certain number of sheets 1 marking strip into the stack 3. The Strip feed channels of the marking devices can run parallel to the separating plates 14 the space between the bars of the bar grate 8 up to the top of the stack out and insert marking strips in stack 3.

Claims (4)

  1. Device for stacking sheets (1), especially sheets of paper or board which are fed in overlapping streams, on pallets (4), having
    a belt conveyor (2) to convey the sheets (1) to a delivery platform (5) that is arranged such that it can be raised and lowered in the stacking area,
    having an auxiliary stacking platform (8) that can be moved horizontally into the stacking area in the sheet running direction, and
    having a separating device (14, 16), to form a gap between the sheet trailing edges in the stack (3) which is arranged such that it can be raised and lowered in front of the stacking area and comprising a row of separating plates (14) which are arranged at a distance from one another, extend upwards and are each angled over at their free end in the direction of the stacking area to form separating fingers (16), it being possible for the separating fingers (16) to be lifted as far as the feed level of the sheets (1) and moved into the stacking area between the sheet trailing edges,
    characterized in that
    the belt conveyor (2) ends at a distance upstream of the stacking area,
    the auxiliary stacking platform is designed as a bar grid (8),
    the separating device (14, 16) is arranged in the free space between the end of the belt conveyor (2) and the stacking area, and
    the separating plates (14) with the separating fingers (16) are arranged over the working width opposite gaps between the bars of the bar grid (8), and the length of the separating plates (14) is greater than the vertical distance between the feed level of the sheets (1) and the insertion level of the bar grid (8).
  2. Device according to Claim 1, characterized in that the stacking area is bounded on the inlet side by a vertical plate (19) which extends downwards from the feed level and has passage openings for the bars (21) of the bar grid (8) and, offset with respect to these, cut-outs for the separating elements (14, 16).
  3. Device according to Claim 1 or 2, characterized in that the separating element (14, 16) can be raised by means of a lifting mechanism, especially a pneumatic piston/cylinder unit (17), and its downward movement is bounded by a mechanical stop.
  4. Device according to Claim 1 or 3, characterized in that the bar grid (8) is mounted such that it can be moved vertically by means of a lifting mechanism.
EP95116607A 1994-12-22 1995-10-21 Device for stacking sheets, in particular for paper- or paperboard sheets which are fed in overlapping streams Expired - Lifetime EP0718231B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445994 1994-12-22
DE4445994A DE4445994C2 (en) 1994-12-22 1994-12-22 Device for stacking sheets, in particular sheets or sheets of paper or cardboard conveyed in shingles

Publications (3)

Publication Number Publication Date
EP0718231A2 EP0718231A2 (en) 1996-06-26
EP0718231A3 EP0718231A3 (en) 1997-06-25
EP0718231B1 true EP0718231B1 (en) 2001-03-21

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Application Number Title Priority Date Filing Date
EP95116607A Expired - Lifetime EP0718231B1 (en) 1994-12-22 1995-10-21 Device for stacking sheets, in particular for paper- or paperboard sheets which are fed in overlapping streams

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US (2) US5628505A (en)
EP (1) EP0718231B1 (en)
JP (1) JPH08225226A (en)
DE (2) DE4445994C2 (en)
ES (1) ES2159592T3 (en)

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Also Published As

Publication number Publication date
JPH08225226A (en) 1996-09-03
ES2159592T3 (en) 2001-10-16
DE4445994C2 (en) 1997-01-16
DE4445994A1 (en) 1996-06-27
EP0718231A3 (en) 1997-06-25
US5664767A (en) 1997-09-09
DE59509111D1 (en) 2001-04-26
EP0718231A2 (en) 1996-06-26
US5628505A (en) 1997-05-13

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