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EP1127819A1 - Blattstapelzuführvorrichtung - Google Patents

Blattstapelzuführvorrichtung Download PDF

Info

Publication number
EP1127819A1
EP1127819A1 EP00103362A EP00103362A EP1127819A1 EP 1127819 A1 EP1127819 A1 EP 1127819A1 EP 00103362 A EP00103362 A EP 00103362A EP 00103362 A EP00103362 A EP 00103362A EP 1127819 A1 EP1127819 A1 EP 1127819A1
Authority
EP
European Patent Office
Prior art keywords
sheet
feeder according
topmost
stack
sets
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.)
Withdrawn
Application number
EP00103362A
Other languages
English (en)
French (fr)
Inventor
Gunther Salme
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.)
C P Bourg SA
Original Assignee
C P Bourg SA
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 C P Bourg SA filed Critical C P Bourg SA
Priority to EP00103362A priority Critical patent/EP1127819A1/de
Publication of EP1127819A1 publication Critical patent/EP1127819A1/de
Withdrawn legal-status Critical Current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
    • B65H3/00—Separating articles from piles
    • B65H3/32—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile
    • B65H3/322—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile for separating a part of the pile, i.e. several articles at once
    • B65H3/327—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile for separating a part of the pile, i.e. several articles at once the pile being off-set
    • 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
    • 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
    • B65H2701/18—Form of handled article or web
    • B65H2701/182—Piled package
    • B65H2701/1826—Arrangement of sheets
    • B65H2701/18265—Ordered set of batches of articles
    • B65H2701/18266—Ordered set of batches of articles wherein the batches are offset from each other, e.g. stepped pile

Definitions

  • the present invention relates to a sheet set feeder for feeding individualized sheet sets from a stack of sheet sets wherein each set is offset-jogged with respect to adjacent sets.
  • Digital printers can produce entire sets of sheets for books, booklets, brochures etc. in rapid succession. For the further processing of the sheet sets, they are moved to a finishing machine, e.g. a booklet-maker or a glue-binder.
  • a finishing machine e.g. a booklet-maker or a glue-binder.
  • the sheet sets are stacked for collection and transport, it is common practice to arrange each of them with an offset with respect to the adjacent sets, i.e. the sets are offset-jogged.
  • U.S. Patent Specification No. 5,556,254 shows a sheet set feeder wherein a stack of offset-jogged sheet sets is accommodated in a hopper. Beneath the hopper a shutter mechnism is provided. The shutter mechanism defines an opening that admits passage of individual sheet sets. In this set feeder, the sets are taken from the bottom of the stack. When a malfunction occurs, such as a paper jam within the hopper, all or at least a substantial part of the stack must be removed. This is a difficult task, given the height of the stack that can easily attain half a meter and the consequential weight of the paper to be moved.
  • the present invention provides a sheet set feeder that automatically and reliably separates individual sets from the top of a stack.
  • the sheet set feeder comprises a separator member movable between a bottommost sheet of the topmost set and a topmost sheet of a next-to-topmost set to engage the topmost set, and movable in a predefined feed direction after engagement of the topmost set to push the topmost set in the predefined feed direction. Since the separator member acts on the topmost set in the stack, any malfunction in the separating process would occur in the upper portion of the stack, and access to that portion of the stack would be from above, and thus would be easy.
  • the separator member is movable between two opposed offset-jogged sheet set edges along an edge of the topmost set perpendicular to the offset-jogged edges.
  • the separator member is movable to a position midway between the opposed offset-jogged edges prior to moving in the feed direction.
  • a lifting member such as suction cup is provided for engaging a topmost sheet of the next-to-topmost set at an offset-jogged edge portion of that sheet, and for locally lifting that sheet at its offset-jogged edge portion, thereby simultaneously partially lifting the uppermost set, locally creating a gap between the two topmost sheet sets.
  • the separator member engages into the gap formed between the two topmost sheet sets, thereby reliably separating the topmost set from the stack.
  • the separation of the topmost sheet set preferably occurs always at a constant level.
  • the stack is thus accommodated on a carrier associated with a lifting mechanism to make up for the difference in height after removal of each sheet set.
  • the carrier is a cart, allowing easy transport and loading of a new stack.
  • the orientation and alignment of the individualized sheet sets can be adapted to the needs of an online connected finishing machine. This is achieved with a combined sheet set rotating and translating device provided downstream of the set separating mechanism.
  • the set rotation and translation device is operated selectively according to the needs, for example to change between portrait and landscape orientation and/or to align the sets with a center axis of the finishing machine.
  • the sheet set feeder 10 shown in Figure 1 has a housing 12 that accommodates a carrier 14 for a stack 16 of sheet sets, a set separating mechanism 18, a combined set rotator and translator 20 and a set outlet conveyor 22.
  • the set separating mechanism 18 comprises a separator member 24 engaging the top most set in the stack 16.
  • the carrier 14 is a cart with casters 26 that is engaged from beneath by a lifting mechanism 28.
  • the sheet sets in the stack 16 are offset-jogged so that opposed edges of the sheet sets project laterally with respect to corresponding edges of adjacent sheet sets.
  • the carrier 14 is supported by chains 30, 32, running over deflection rollers 34, 36 and engaged by a drive mechanism which is controlled according to the needs so that the topmost set 16a in the stack 16 is always located at the same level.
  • the lateral alignment of the topmost sheet sets is ensured by a pair of opposed abutment members 38, 40 engaging the projecting edges of the uppermost sheet sets in the stack 16.
  • a sheet lifting mechanism is associated with each abutment members 38, 40.
  • a sheet lifting mechanism 42 has a suction cup 44 in a position above the projecting edge of the topmost sheet in the next-to-topmost sheet set in the stack 16.
  • the sheet lifting mechanism with the suction cup 44 is movable vertically, as indicated by a double arrow.
  • the suction cup 44 is lowered to engage the topmost sheet of the next-to-topmost sheet set in the stack
  • the sheet lifting mechanism with the suction cup 44 is automatically raised, entraining the uppermost sheet set 16 and creating a gap 46 between the bottom sheet of the uppermost set 16a and the top sheet of the next-to-topmost set.
  • the separator member 24 is shaped as a finger with a tapered edge 24 to facilitate penetration into the gap 46, as also seen in Figure 4. By penetrating into the gap 46, the separator member 24 reliably separates the topmost set 16a from the adjacent set in the stack.
  • the suction cup 44 is mounted at the lower edge of a hollow tube 50 mounted for reciprocating upward and downward movement in a cylinder casing 52.
  • the upper end of the hollow tube 50 is connected to a vacuum source.
  • Downward movement of the hollow tube 50 with the suction cup 44 is assisted by a pressure spring 54 accommodated in the casing 52.
  • the pressure spring 54 bears on a plate 56 connected with the hollow tube 50.
  • an electromagnetic solenoid device is used as an alternative to the piston/cylinder arrangement shown in Fig. 5.
  • the separator member 24 is movable along an edge 16b of the uppermost sheet set 16a. In the position illustrated at Figure 6a, the separator member 24 is about to engage beneath the bottom sheet of the uppermost set 16a, as lifted by the suction cup 44. The separator member 24 then moves under the lifted portion of the topmost set 16a, as shown in Figure 4, and is then advanced to a central position along edge 16b, midway between the offset-jogged edges of the sheet sets. To prevent misalignment of the sheets in the topmost set 16a during such movement of the separator member 24, each of the projecting edges of the stacked sets is engaged by a lateral abutment member 38, 40, as more clearly seen in Figure 3.
  • the separator member 24 After the separator member 24 has moved to a central position along edge 16b of the topmost set, as seen in Figure 6b, it is moved in a predefined feed direction indicated by an arrow in Figure 6b perpendicularly to edge 16b to push the topmost set in said direction, thereby separating the set from the stack.
  • the separator member 24 is then moved along edge 16b of the topmost set 16a to the opposite projecting edge to perform a separating function for the next set in the stack, in a manner similar to that for the preceding set.
  • a similar sheet lifting mechanism with a suction cup 44 is associated with the lateral abutment member 38.
  • the separator member 24 has moved into a central position along edge 16b, prior to pushing the topmost set from the top of the stack in the predetermined feed direction, as illustrated in Figure 6b.
  • the assembly comprises a horizontal rail 60 mounted in a frame structure, a carriage 62 movably mounted on the rail 60 and carrying the separator member 24, and a pair of sliders 64 mounted for sliding movement on the rail 60.
  • Each slider 64 carries one of the abutment members 38, 40.
  • the sheet lifting mechanisms 42 are attached to the respective abutment members 68, 40.
  • Each slider 64 has a plate 64a of a ferromagnetic material, and carriage 62 has a pair of solenoids 66, each associated with one of the plates 64a.
  • the combined sheet set rotator and translator is illustrated in Figures 8 and 9.
  • the basic operation of the set rotator and translator 20 consists in receiving an individualized sheet set 16a from the stack 16 (Figure 8a) rotating the set by 90° (Figure 8b) and shifting the set in a direction perpendicular to the feed direction ( Figure 8c) to align the sheet set with the center axis of a downstream finishing machine.
  • operation of the rotator and translator 20 is selective, depending on the required orientation and alignment of the sheet sets supplied by the set feeder.
  • a sheet set clamp is formed by a pair of clamping jaws 70, 72 opposed to each other in a vertical direction, the upper one 70 being movable up and down under control of an eccenter drive 74 to selectively clamp and release a sheet set 16a received from the set separating mechanism.
  • the clamping jaws 70, 72 are mounted for synchronous rotation about a common vertical axis 76.
  • a pair of pinions 78, 80 are mounted on a common drive shaft 82, in meshing engagement with corresponding peripheral gear teeth on the clamping jaws 70, 72.
  • the entire assembly including the pair of clamping jaws with the associated driving units is mounted on a horizontally movable carriage 84. Carriage 84 is driven with a horizontal reciprocating movement by a chain or belt drive 86 located beneath the carriage 84.
  • the set feeder of the present invention is equipped with optical sensors and an electronic control unit.
  • the dimension and position of the sheet sets are automatically detected.
  • the position of the rail 60 with carriage 62 is then adjusted in accordance with a detected edge of the uppermost sheet set.
  • the lateral abutment members 38, 40 are adjusted, as illustrated in Figure 7. Then, the set feeder is ready for operation.
  • Step 102 is a check whether the last sheet set in the stack has been processed. If the last set has been processed, the lifting mechanism 28 is activated to lower the carrier 14 to its lowermost position, and operation of the set feeder is terminated.
  • step 104 the carrier 14 is lifted at step 104.
  • step 106 the topmost sheet of the next-to-topmost sheet set is lifted by one of the suction cups 44.
  • step 108 the suction cup on the opposite side of the stack is raised.
  • step 110 the gap 46 between the topmost set and the adjacent set in the stack is created.
  • step 112 the finger of the separator member 24 is moved into the gap 46 and then along the edge of the uppermost set to a central position, with a final pushing movement in the predefined feed direction.
  • step 114 a flag is checked whether rotation of the set is required.
  • the set is pushed to the clamp of the set rotator 20 (step 116), and the set is rotated at step 118. After rotation and an optional translation, the set is fed out via the set outlet conveyor 22. If no rotation is required, the set is fed out by the set outlet conveyor 22 in steps 120, 122 and 124.
  • the separator member 24 (referred to as finger in Figure 10) is moved to the opposite side of the stack, and operation is resumed at step 100 for the next set in the stack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP00103362A 2000-02-22 2000-02-22 Blattstapelzuführvorrichtung Withdrawn EP1127819A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00103362A EP1127819A1 (de) 2000-02-22 2000-02-22 Blattstapelzuführvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00103362A EP1127819A1 (de) 2000-02-22 2000-02-22 Blattstapelzuführvorrichtung

Publications (1)

Publication Number Publication Date
EP1127819A1 true EP1127819A1 (de) 2001-08-29

Family

ID=8167883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103362A Withdrawn EP1127819A1 (de) 2000-02-22 2000-02-22 Blattstapelzuführvorrichtung

Country Status (1)

Country Link
EP (1) EP1127819A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255168A (zh) * 2019-06-28 2019-09-20 广东利元亨智能装备股份有限公司 一种工件错位抓取方法
WO2024213828A1 (en) * 2023-04-12 2024-10-17 Dieffenbacher Panelboard Oy Arrangement and method for handling boards

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592640A1 (fr) * 1986-01-03 1987-07-10 Bertin & Cie Dispositif de separation de paquets de feuilles, en particulier de papier, formant une pile
US5380147A (en) * 1991-07-19 1995-01-10 Fraunhofer Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Device for picking up bendable flat parts
JPH07157118A (ja) * 1993-11-30 1995-06-20 Matsushita Electric Works Ltd シート材の分離方法
JPH07157121A (ja) * 1993-11-30 1995-06-20 Matsushita Electric Works Ltd シート材の分離方法及び分離装置
DE19504708A1 (de) * 1995-02-13 1996-08-14 Lothar Spitzer Vorrichtung zum Transportieren von aus einem Blattpaketstapel entnehmbaren Blattpaketen
US5556254A (en) * 1995-06-07 1996-09-17 Standard Duplicating Machines Corporation Paper set feeding
EP0914969A2 (de) * 1997-11-10 1999-05-12 Kurt Rünzi Vorrichtung zum Stapeln, Sortieren und Zuführen von gedruckten Dokumenten nach einer Endbearbeitungsmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592640A1 (fr) * 1986-01-03 1987-07-10 Bertin & Cie Dispositif de separation de paquets de feuilles, en particulier de papier, formant une pile
US5380147A (en) * 1991-07-19 1995-01-10 Fraunhofer Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Device for picking up bendable flat parts
JPH07157118A (ja) * 1993-11-30 1995-06-20 Matsushita Electric Works Ltd シート材の分離方法
JPH07157121A (ja) * 1993-11-30 1995-06-20 Matsushita Electric Works Ltd シート材の分離方法及び分離装置
DE19504708A1 (de) * 1995-02-13 1996-08-14 Lothar Spitzer Vorrichtung zum Transportieren von aus einem Blattpaketstapel entnehmbaren Blattpaketen
US5556254A (en) * 1995-06-07 1996-09-17 Standard Duplicating Machines Corporation Paper set feeding
EP0914969A2 (de) * 1997-11-10 1999-05-12 Kurt Rünzi Vorrichtung zum Stapeln, Sortieren und Zuführen von gedruckten Dokumenten nach einer Endbearbeitungsmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 09 31 October 1995 (1995-10-31) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255168A (zh) * 2019-06-28 2019-09-20 广东利元亨智能装备股份有限公司 一种工件错位抓取方法
CN110255168B (zh) * 2019-06-28 2021-01-15 广东利元亨智能装备股份有限公司 一种工件错位抓取方法
WO2024213828A1 (en) * 2023-04-12 2024-10-17 Dieffenbacher Panelboard Oy Arrangement and method for handling boards

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