EP0034797B1 - Device for separating cardboard sheets or the like - Google Patents

Device for separating cardboard sheets or the like Download PDF

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Publication number
EP0034797B1
EP0034797B1 EP81101130A EP81101130A EP0034797B1 EP 0034797 B1 EP0034797 B1 EP 0034797B1 EP 81101130 A EP81101130 A EP 81101130A EP 81101130 A EP81101130 A EP 81101130A EP 0034797 B1 EP0034797 B1 EP 0034797B1
Authority
EP
European Patent Office
Prior art keywords
stock
sheets
stack
removal
buffer
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
Application number
EP81101130A
Other languages
German (de)
French (fr)
Other versions
EP0034797A2 (en
EP0034797A3 (en
Inventor
Wilhelm Fischer
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever NV
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 Unilever NV filed Critical Unilever NV
Publication of EP0034797A2 publication Critical patent/EP0034797A2/en
Publication of EP0034797A3 publication Critical patent/EP0034797A3/en
Application granted granted Critical
Publication of EP0034797B1 publication Critical patent/EP0034797B1/en
Expired 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
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/30—Supports or magazines for piles from which articles are to be separated with means for replenishing the pile during continuous separation of articles therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/08—Supports 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
    • B65H1/24—Supports 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 with means for relieving or controlling pressure 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/32—Orientation of handled material
    • B65H2301/321—Standing on edge

Definitions

  • the invention relates to a device for separating sheets of cardboard or the like. From a relatively large supply, which is divided into the actual supply stack and a removal stack, a conveyor device being provided for the supply stack has a control which, when the subsequent stack drops below a minimum number, switches on the conveying device and the separating stack is assigned a separating device.
  • Such a device is known from DE-A-2 321 771; if the stack of products drops below a minimum number of sheets, the conveyor device is switched on and switched off when the intended maximum quantity is reached.
  • the number of sheets in the acceptance stack is therefore subject to constant fluctuation, with the result that the contact pressure of the bottom sheet in each case also varies constantly. This means that the removal of the individual sheets is extremely susceptible to faults.
  • the invention has for its object to provide a device of the type mentioned, with which it is possible to keep a large supply of sheets available and still keep the contact pressure of the sheets constant at the separating device.
  • a buffer stack the number of which is provided for controlling the conveying device, is divided from the removal stack, and in all three successive stacks the sheets are on one of their edges and the foremost sheet of each stack with its upper edge facing away from each abuts a stop bar, the removal stack and the buffer stack adjoining this standing up on a common guide rail designed as an inclined plane, while the third stack of sheets serving as the actual supply stack rests on the conveying device gets up.
  • the conveyor device is designed as a chain conveyor and is arranged inclined towards the buffer stack.
  • the sheets slide into the buffer stack particularly easily and trouble-free.
  • the chain links of the chain conveyor very effectively prevent unwanted slipping of the sheets.
  • a processing device (not shown) is fed cardboard sheets 1 individually and lying flat on a conveyor belt 2.
  • the sheets are withdrawn from a removal stack 3 by suction cups 5 attached to lever arms 4.
  • the lower edge of the cardboard sheets of the acceptance stack 3 are on a guide rail 6, which slopes downwards towards the conveyor belt 2.
  • a stop 7 for the lower edge of the first sheet of the removal stack is attached.
  • a further stop 8, against which this edge is supported, is arranged for the upper edge of this first sheet.
  • lateral stops 18 can also be provided (FIG. 2), in particular in order to enable easier adaptation to different sheet sizes.
  • a buffer stack 9 made of cardboard sheets, which is separated from the sheets of the removal stack 3 by a stop bar 10 at the upper end of the first sheet.
  • This stop bar protrudes only slightly into the surface of the first sheet, so that the first sheet slips under it as soon as a sheet of the removal stack is removed from the separating device (lever arm 4, suction device 5).
  • An initiator 11 (FIG. 2) is arranged to the side of the buffer stack 9 and responds to a minimum and a maximum number of sheets in the buffer stack. It is connected to a control device, not shown, which switches a drive of a conveyor device 12, which is also not shown, on or off.
  • the conveyor device 12 is designed as a chain conveyor with two conveyor chains 13. On these conveyor chains 13, which can be of any length, the sheets of a supply stack 14 stand on one edge. The first sheet of this supply stack 14 is held by a stop rail 15 engaging on its upper edge.
  • the initiator 11 switches on the conveying device 12 when the minimum number of sheets in the buffer stack 9 has been reached, the lower edges of the sheets of the supply stack 14 are transported against the buffer stack 9; however, the sheets are simultaneously held on their upper edge by the stop rail 15. As soon as a sheet falls with its lower edge onto the guide rail 6, its upper edge slips under the stop rail 15 and the sheet falls fully into the buffer stack. This continues until the initiator switches off the conveying device after reaching the maximum number of sheets in the buffer stack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Vereinzeln von Bogen aus Karton od. dgl. aus einem relativ grossen Vorrat, der in den eigentlichen Vorrats-Stapel und einen Abnahme-Stapel unterteilt ist, wobei für den Vorrats-Stapel eine Fördervorrichtung vorgesehen ist, die eine Steuerung aufweist, welche beim Absinken des nachfolgenden Stapels unter eine Mindestanzahl die Fördervorrichtung einschaltet und wobei dem Abnahme-Stapel eine Vereinzelungseinrichtung zugeordnet ist.The invention relates to a device for separating sheets of cardboard or the like. From a relatively large supply, which is divided into the actual supply stack and a removal stack, a conveyor device being provided for the supply stack has a control which, when the subsequent stack drops below a minimum number, switches on the conveying device and the separating stack is assigned a separating device.

Eine derartige Vorrichtung ist aus DE-A-2 321 771 bekannt; beim Absinken des Abnahme-Stapels unter eine Mindestanzahl von Bogen, wird die Fördervorrichtung eingeschaltet und bei Erreichen der vorgesehenen Höchstmenge abgeschaltet. Die Anzahl von Bogen im Abnahme-Stapel unterliegt also einer ständigen Schwankung, womit auch der Anpressdruck des jeweils untersten Bogens ständig unterschiedlich hoch ist. Dadurch ist die Abnahme der einzelnen Bogen äusserst störanfällig.Such a device is known from DE-A-2 321 771; if the stack of products drops below a minimum number of sheets, the conveyor device is switched on and switched off when the intended maximum quantity is reached. The number of sheets in the acceptance stack is therefore subject to constant fluctuation, with the result that the contact pressure of the bottom sheet in each case also varies constantly. This means that the removal of the individual sheets is extremely susceptible to faults.

In der DE-C-264 330 ist auch schon vorgeschlagen worden, den Vorrat in zwei Stapel zu unterteilen, um den Anpressdruck der Bogen am Abnahme-Stapel verhältnismässig klein zu halten. Die Bogen des eigentlichen Vorrats-Stapels werden durch ein Belastungsgewicht gegen den letzten Bogen des Abnahme-Stapels gepresst und können - sobald dieser Stapel kleiner wird - untereinem Anschlag durchrutschen und in den Abnahme-Stapel fallen. Dabei muss der Anpressdruck verhältnismässig gross sein, da die Bogen eine erhebliche Reibung zu überwinden haben. Deshalb kann auch nur eine sehr kleine Anzahl von Bogen bevorratet werden.In DE-C-264 330 it has also been proposed to divide the supply into two stacks in order to keep the contact pressure of the sheets on the take-off stack relatively small. The sheets of the actual supply stack are pressed against the last sheet of the acceptance stack by a load weight and can - as soon as this stack becomes smaller - slip under one stop and fall into the acceptance stack. The contact pressure must be relatively high since the sheets have to overcome considerable friction. For this reason, only a very small number of sheets can be stored.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der genannten Art zu schaffen, mit der es möglich ist, einen grossen Vorrat an Bogen bereitzuhalten und trotzdem den Anpressdruck der Bogen an der Vereinzelungseinrichtung konstant zu halten.The invention has for its object to provide a device of the type mentioned, with which it is possible to keep a large supply of sheets available and still keep the contact pressure of the sheets constant at the separating device.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass vom Abnahme-Stapel ein Puffer-Stapel abgeteilt ist, dessen Anzahl für die Steuerung der Fördervorrichtung vorgesehen ist, und dass in allen drei hintereinanderliegenden Stapeln die Bogen auf einer ihrer Kanten stehen und der jeweils vorderste Bogen jedes Stapels mit seiner davon abgewandten oberen Kante an jeweils einer Anschlagleiste anliegt, wobei der Abnahme-Stapel und der an diesen anschliessende Puffer-Stapel auf einer gemeinsamen, als schiefe Ebene ausgebildeten Führungsschiene aufstehen, während der dritte, als eigentlicher Vorrats-Stapel dienende Bogenstapel auf der Fördervorrichtung aufsteht.This object is achieved according to the invention in that a buffer stack, the number of which is provided for controlling the conveying device, is divided from the removal stack, and in all three successive stacks the sheets are on one of their edges and the foremost sheet of each stack with its upper edge facing away from each abuts a stop bar, the removal stack and the buffer stack adjoining this standing up on a common guide rail designed as an inclined plane, while the third stack of sheets serving as the actual supply stack rests on the conveying device gets up.

Sobald ein Bogen aus dem Abnahme-Stapel entnommen wird, rutscht selbsttätig ein neuer Bogen aus dem Puffer-Stapel nach, wodurch im Abnahme-Stapel immer eine konstante Anzahl von Bogen enthalten ist. Dadurch ist auch der Anlagedruck des ersten Bogens immer gleich.As soon as a sheet is removed from the acceptance stack, a new sheet automatically slips out of the buffer stack, which means that there is always a constant number of sheets in the removal stack. As a result, the line pressure of the first sheet is always the same.

Ohne Einfluss darauf kann aber im Vorrats-Stapel eine beliebig grosse Menge an Bogen bevorratet werden, die dann über die Fördervorrichtung in der gewünschten Anzahl dem Puffer-Stapel zugeführt wird.Without influencing this, however, an arbitrarily large amount of sheets can be stored in the supply stack, which is then fed to the buffer stack in the desired number via the conveying device.

Erfindungsgemäss ist es dabei besonders vorteilhaft, wenn die Fördervorrichtung als Kettenförderer ausgebildet und zum Puffer-Stapel hin geneigt angeordnet ist.According to the invention, it is particularly advantageous if the conveyor device is designed as a chain conveyor and is arranged inclined towards the buffer stack.

Dadurch erfolgt das Nachrutschen der Bogen in den Puffer-Stapel besonders leicht und störungsfrei. Die Kettenglieder des Kettenförderers verhindern dabei sehr wirksam das ungewollte Rutschen der Bogen.As a result, the sheets slide into the buffer stack particularly easily and trouble-free. The chain links of the chain conveyor very effectively prevent unwanted slipping of the sheets.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung veranschaulicht. Dabei zeigen:

  • Fig. 1 eine schematische Seitenansicht einer Vereinzelungsvorrichtung mit Abnahme-Stapel, Puffer-Stapel und Vorrats-Stapel und
  • Fig. 2 eine schematische Draufsicht auf diese Vorrichtung.
An exemplary embodiment of the invention is illustrated in the drawing. Show:
  • Fig. 1 is a schematic side view of a separating device with removal stack, buffer stack and storage stack and
  • Fig. 2 is a schematic plan view of this device.

Einer nicht weiter dargestellten Bearbeitungsvorrichtung werden Kartonbogen 1 einzeln und flachliegend auf einem Förderband 2 zugeführt. Die Bogen werden aus einem Abnahme-Stapel 3 durch an Hebelarmen 4 angebrachte Sauger 5 abgezogen. Die Kartonbogen des Abnahme-Stapels 3 stehen mit ihrer unteren Kante auf einer Führungsschiene 6, die gegen das Förderband 2 abwärts geneigt verläuft. Am Ende der Führungsschiene 6 ist ein Anschlag 7 für die untere Kante des ersten Bogens des Abnahme-Stapels angebracht. Für die obere Kante dieses ersten Bogens ist ein weiterer Anschlag 8 angeordnet, gegen den sich diese Kante abstützt. Anstelle dieses oberen Anschlages 8 oder zusätzlich zu diesem können auch seitliche Anschläge 18 vorgesehen sein (Fig. 2), insbesondere, um eine leichtere Anpassung an unterschiedliche Bogengrössen zu ermöglichen.A processing device (not shown) is fed cardboard sheets 1 individually and lying flat on a conveyor belt 2. The sheets are withdrawn from a removal stack 3 by suction cups 5 attached to lever arms 4. The lower edge of the cardboard sheets of the acceptance stack 3 are on a guide rail 6, which slopes downwards towards the conveyor belt 2. At the end of the guide rail 6, a stop 7 for the lower edge of the first sheet of the removal stack is attached. A further stop 8, against which this edge is supported, is arranged for the upper edge of this first sheet. Instead of this upper stop 8 or in addition to this, lateral stops 18 can also be provided (FIG. 2), in particular in order to enable easier adaptation to different sheet sizes.

Auf der Führungsschiene 6 steht ausserdem ein Puffer-Stapel 9 aus Kartonbogen, der durch eine Anschlagleiste 10 am oberen Ende des ersten Bogens von den Bogen des Abnahme-Stapels 3 getrennt ist. Diese Anschlagleiste ragt nur geringfügig in die Fläche des ersten Bogens hinein, so dass der erste Bogen unter ihr durchrutscht, sobald ein Bogen des Abnahme-Stapels von der Vereinzelungseinrichtung (Hebelarm 4, Sauger 5) abgenommen wird.On the guide rail 6 there is also a buffer stack 9 made of cardboard sheets, which is separated from the sheets of the removal stack 3 by a stop bar 10 at the upper end of the first sheet. This stop bar protrudes only slightly into the surface of the first sheet, so that the first sheet slips under it as soon as a sheet of the removal stack is removed from the separating device (lever arm 4, suction device 5).

Seitlich neben dem Puffer-Stapel 9 ist ein Initiator 11 (Fig. 2) angeordnet, der auf eine minimale und eine maximale Anzahl von Bogen im Puffer-Stapel anspricht. Er ist mit einer nicht dargestellten Steuereinrichtung verbunden, die einen ebenfalls nicht dargestellten Antrieb einer Fördervorrichtung 12 ein- bzw. ausschaltet. Die Fördervorrichtung 12 ist als Kettenförderer mit zwei Förderketten 13 ausgebildet. Auf diesen Förderketten 13, die beliebig lang sein können, stehen die Bogen eines Vorrats-Stapels 14 mit ihrer einen Kante auf. Der erste Bogen dieses Vorrats-Stapels 14 wird durch eine an seiner oberen Kante angreifende Anschlagschiene 15 gehalten.An initiator 11 (FIG. 2) is arranged to the side of the buffer stack 9 and responds to a minimum and a maximum number of sheets in the buffer stack. It is connected to a control device, not shown, which switches a drive of a conveyor device 12, which is also not shown, on or off. The conveyor device 12 is designed as a chain conveyor with two conveyor chains 13. On these conveyor chains 13, which can be of any length, the sheets of a supply stack 14 stand on one edge. The first sheet of this supply stack 14 is held by a stop rail 15 engaging on its upper edge.

Sobald der Initiator 11 beim Erreichen der Mindestanzahl von Bogen im Puffer-Stapel 9 die Fördervorrichtung 12 einschaltet, werden die unteren Kanten der Bogen des Vorrats-Stapels 14 gegen den Puffer-Stapel 9 hin transportiert; die Bogen werden jedoch gleichzeitig an ihrer oberen Kante durch die Anschlagschiene 15 gehalten. Sobald ein Bogen mit seiner unteren Kante auf die Führungsschiene 6 fällt, rutscht seine obere Kante unter der Anschlagschiene 15 durch und der Bogen fällt voll in den Puffer-Stapel. Dies erfolgt so lange, bis der Initiator nach Erreichen der maximal vorgesehenen Bogenzahl im Puffer-Stapel die Fördervorrichtung abschaltet.As soon as the initiator 11 switches on the conveying device 12 when the minimum number of sheets in the buffer stack 9 has been reached, the lower edges of the sheets of the supply stack 14 are transported against the buffer stack 9; however, the sheets are simultaneously held on their upper edge by the stop rail 15. As soon as a sheet falls with its lower edge onto the guide rail 6, its upper edge slips under the stop rail 15 and the sheet falls fully into the buffer stack. This continues until the initiator switches off the conveying device after reaching the maximum number of sheets in the buffer stack.

Es ist auch denkbar, als Fördervorrichtung einen Stempel od. dgl. vorzusehen. Dann ist es aber notwendig, gleichzeitig an dem dem Puffer-Stapel zugekehrten Ende einen Anschlag anzuordnen, der ein unbeabsichtigtes Nachrutschen der Bogen des Vorrats-Stapels in den Puffer-Stapel verhindert.It is also conceivable to provide a stamp or the like as the conveying device. Then, however, it is necessary at the same time to arrange a stop at the end facing the buffer stack, which prevents the sheets of the supply stack from slipping unintentionally into the buffer stack.

Claims (2)

1. A device for separating sheets made from board or a similar material from a relatively large stock of sheets which are divided up into the actual storage stock (14) and a removal stock (3), the storage stock (14) having a conveyor device (12) with control facilities that switch on the conveyor device when the contents of the subsequent stock fall below a certain minimum level and the removal stock (3) having a separating device, wherein a buffer stock (9), the number of sheets in which controls the regulation of the conveyor device, is divided off from the removal stock and wherein the sheets in all the three consecutive stocks (3, 9, 14) stand on one of their edges and the opposite top edge of the front sheet in each stock always engages a stop bar (8, 10, 15), the removal stock 13) and the subsequent buffer stock (9) being located on the same slanting guide (6) whilst the third stock of sheets, which serves as the actual storage stock (14), is positioned on the conveyor device (12, 13).
2. A device in accordance with claim 1, wherein the conveyor device (12) is designed as a chain conveyor and slopes towards the buffer stock (9).
EP81101130A 1980-02-22 1981-02-17 Device for separating cardboard sheets or the like Expired EP0034797B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3006782 1980-02-22
DE3006782A DE3006782C2 (en) 1980-02-22 1980-02-22 Method and device for separating sheets of cardboard or the like.

Publications (3)

Publication Number Publication Date
EP0034797A2 EP0034797A2 (en) 1981-09-02
EP0034797A3 EP0034797A3 (en) 1981-12-30
EP0034797B1 true EP0034797B1 (en) 1985-05-22

Family

ID=6095358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101130A Expired EP0034797B1 (en) 1980-02-22 1981-02-17 Device for separating cardboard sheets or the like

Country Status (5)

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EP (1) EP0034797B1 (en)
DE (2) DE3006782C2 (en)
DK (1) DK77581A (en)
ES (1) ES8203780A1 (en)
GR (1) GR70722B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5653671A (en) * 1994-12-30 1997-08-05 Riverwood International Corporation Carton feeder assembly
JP3538719B2 (en) * 1995-10-18 2004-06-14 四国化工機株式会社 Blank feeder
ES2229840B1 (en) * 2002-03-05 2006-06-01 Kappa Iberoamericana, S.A. CARTON PLATE STACKER FOR FEEDING BOX CONFORMING MACHINES.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE264330C (en) *
DE282928C (en) *
NL298992A (en) * 1962-10-11
US3748937A (en) * 1971-07-01 1973-07-31 Longford Equip Intern Ltd Card scoring device
DE2321771A1 (en) * 1973-04-30 1974-11-14 Jagenberg Werke Ag DEVICE FOR FEEDING CARDBOARD CUTS OD. DGL. TO A PROCESSING MACHINE
CH584642A5 (en) * 1975-07-15 1977-02-15 Grapha Holding Ag
US4183517A (en) * 1977-12-27 1980-01-15 Harris Corporation Apparatus and method for delivering signatures to a gatherer

Also Published As

Publication number Publication date
DE3006782A1 (en) 1981-08-27
DE3006782C2 (en) 1985-12-19
GR70722B (en) 1983-01-18
ES499608A0 (en) 1982-04-16
EP0034797A2 (en) 1981-09-02
EP0034797A3 (en) 1981-12-30
DK77581A (en) 1981-08-23
DE3170570D1 (en) 1985-06-27
ES8203780A1 (en) 1982-04-16

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