EP0183084A1 - Dispositif pour séparer des plaques d'impression offset et enlever le papier intercalaire - Google Patents

Dispositif pour séparer des plaques d'impression offset et enlever le papier intercalaire Download PDF

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Publication number
EP0183084A1
EP0183084A1 EP85113938A EP85113938A EP0183084A1 EP 0183084 A1 EP0183084 A1 EP 0183084A1 EP 85113938 A EP85113938 A EP 85113938A EP 85113938 A EP85113938 A EP 85113938A EP 0183084 A1 EP0183084 A1 EP 0183084A1
Authority
EP
European Patent Office
Prior art keywords
stack
plate
cassette
plates
channel
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.)
Granted
Application number
EP85113938A
Other languages
German (de)
English (en)
Other versions
EP0183084B1 (fr
Inventor
Rolf Angelbeck
Reinhard Gesell
Helmut Greve
Ulrich Henke
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.)
Dr Ing Rudolf Hell GmbH
Original Assignee
Dr Ing Rudolf Hell 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 Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Priority to AT85113938T priority Critical patent/ATE32695T1/de
Publication of EP0183084A1 publication Critical patent/EP0183084A1/fr
Application granted granted Critical
Publication of EP0183084B1 publication Critical patent/EP0183084B1/fr
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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of 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
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, 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
    • B65H2701/19—Specific article or web
    • B65H2701/1928—Printing plate

Definitions

  • the invention relates to a device by means of which in modern processing machines for offset printing plates, such as. B. exposure machines, the individual input as a stack of plates and the usually existing paper layers are removed.
  • the light-sensitive layer side of the plates is extremely sensitive to scratches.
  • the plates must therefore never slide on other surfaces, such as parts of the transport device or on top of each other.
  • the sheets are separated from one another by paper intermediate layers so that they cannot rub against each other.
  • This interleaving paper must be removed from the stack each time a plate is removed.
  • the consumption of blown air should be as low as possible.
  • the plates of the stack adhere strongly to one another. So that the top plate in each case can be safely removed from the stack without interference, it is first necessary to detach it from the stack of plates by means of a separation process.
  • the individual plates should always be gripped in the same position by the lifting device.
  • the present invention has set itself the task of specifying a device, all of the above. Conditions met. The invention achieves this with the means mentioned in claim 1. Advantageous further developments are specified in the subclaims.
  • the unexposed offset printing plates with paper intermediate layers are inserted as a stack of plates (1) into a box-shaped cassette (2) with open end faces.
  • On one of the open end faces at least 2 stop pins (3) are embedded in the cassette base, against which the stack of plates (1) is placed.
  • the stop pins (3) are drilled hollow and have a vertical slot (4) in the direction of the plate stack (1), from which blowing air supplied from below at (5) can be blown onto the end face of the plate stack (1).
  • a cap (6) slides on a guide (7) over the slotted part of the stop pins (3), which in the rest position rests against a stop (9) by a spring (8). When depressed, the cap (6) partially covers the slot (4).
  • the clear dimension between the side walls of the cassette (2) is held so that the plate stack with the largest format to be processed fits straight into it.
  • resilient side walls (10) are arranged in the bottom of the cassette (2). These are guided in guides (11) and pulled up by springs (12). With larger plate formats, they are pressed down by the weight of the plate stack until their top edge is flush with the bottom of the cassette. The distance between these resilient side walls is adapted to the respective plate format.
  • a base plate (21) is inserted in this case before inserting the plate stack. Their weight is such that the base plate (21) alone can hold down the side walls (10) against the springs (12).
  • a suction plate (13) with a vacuum that can be switched on and off is movably arranged on guides that are not shown here in particular. These tours allow u. a. to lower the suction plate (13) in a precisely defined position on the plate stack (1) and also to take defined distances from the plate stack (1) in the vertical direction.
  • Fork-shaped stops (14) are arranged on the top of the suction plate (13) so that when the suction plate is lowered they rest on the top of the caps (6) and press them down against the spring (8).
  • the lower edges of the caps (6) cover the slots (4) more or less. The size of the cover is given by the height of the remaining plate stack (1) when the suction plate (13) lowers down to the plate stack.
  • pivotable pins (15) are further arranged so that they rest in a vertical position on the side of the plate stack (1) opposite the stop pins (3).
  • these pins (15) can be pivoted so that they disappear below the level through slots (17) in the bottom of the cassette.
  • the suction plate (13) is - as shown in Fig. 1 - lowered to the plate stack (1).
  • the stops (14) press the caps (6) down against the springs (8).
  • the pins (15) are in the vertical position. After switching on the vacuum in the suction plate (13), this detects the top plate of the stack. Then the suction plate (13) with the suctioned top plate is some Millimeters raised (Fig. 2), so that between the underside of the lifted plate and the rest of the stack a flat channel (18) opens, which laterally from the side walls of the cassette (2) with smaller plate formats from the respective resilient side walls (10) is limited.
  • the caps (6) come through the stops (14) into such a position that the slots in the stop pins (3) are covered so that they just end with the upper edge of the channel (18).
  • the stop pins (3) are supplied with blown air from the air supply (5). This emerges from the slots (4) and blows into the open channel (18) and against the end face of the plate stack (1).
  • the consumption of blown air is conceivably low because it can only freely escape from the slots (4) at the height of the open channel (18).
  • the remaining slot is almost closed by the plate stack (1). With appropriate dimensioning of the height of the duct (18) and the amount of blown air, the following happens:
  • the air flow also penetrates from the face of the stack of plates between the plates on the top, which means that they are easily lifted from one another, ie "separated”. Only then is the subsequent undisturbed lifting of the next plate possible by the suction plate (13), because normally the individual plates adhere strongly to one another when the stack is delivered. In the separation process described, the uppermost 3 to 4 plates move a little in the direction of the air flow, as shown in FIG. 2.
  • the suction plate (13) is therefore lifted further to a position 20 (FIG. 2) after the paper intermediate layer (19) has been blown out, the uppermost plates of the stack have been separated and the blown air has been switched off.
  • the pins (15) are now pivoted back into the vertical position by the lever mechanism (16). In doing so, they push the shifted top plates back into their correct starting position against the stop pins (3).
  • the suction plate (13) guides the detected plate through guides (not shown) (for example laterally) for further processing, deposits it there by switching off the vacuum and returns to the position 20 shown in FIG. 2. After lowering the suction plate (13) on the plate stack (1), the process begins anew as described by sequence control.
  • the invention is advantageously used wherever plates, films, foils and the like are delivered as a stack with intermediate layers of paper or similar material and are to be individually processed after removal of the intermediate layer.
  • the application of the invention is not limited to the graphic arts industry alone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
EP85113938A 1984-11-09 1985-11-02 Dispositif pour séparer des plaques d'impression offset et enlever le papier intercalaire Expired EP0183084B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113938T ATE32695T1 (de) 1984-11-09 1985-11-02 Vorrichtung zum vereinzeln von offsetdruckplatten und entfernen von papierzwischenlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3440909 1984-11-09
DE19843440909 DE3440909A1 (de) 1984-11-09 1984-11-09 Vorrichtung zum vereinzeln von offset-druckplatten und entfernen von papierzwischenlagen

Publications (2)

Publication Number Publication Date
EP0183084A1 true EP0183084A1 (fr) 1986-06-04
EP0183084B1 EP0183084B1 (fr) 1988-03-02

Family

ID=6249856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113938A Expired EP0183084B1 (fr) 1984-11-09 1985-11-02 Dispositif pour séparer des plaques d'impression offset et enlever le papier intercalaire

Country Status (6)

Country Link
US (1) US4667948A (fr)
EP (1) EP0183084B1 (fr)
JP (1) JPS61114941A (fr)
AT (1) ATE32695T1 (fr)
CA (1) CA1233361A (fr)
DE (2) DE3440909A1 (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129022A1 (de) * 1991-08-31 1993-03-11 Heidelberger Druckmasch Ag Magazin fuer den automatischen druckplattenwechsel
US6126384A (en) * 1995-06-07 2000-10-03 Standard Duplicating Machines Corporation Paper set feeding
US5556254A (en) * 1995-06-07 1996-09-17 Standard Duplicating Machines Corporation Paper set feeding
USD399872S (en) 1996-04-22 1998-10-20 Standard Duplicating Machines Corporation Paper set feeder
US5738014A (en) * 1996-07-31 1998-04-14 Agfa Division, Bayer Corporation Method and apparatus for making lithographic printing plates in an automated computer to plate imaging system
US5788455A (en) * 1996-07-31 1998-08-04 Agfa Divison, Bayer Corporation Method and apparatus for picking and transporting plates in an automated platesetter
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
US5655452A (en) * 1996-08-07 1997-08-12 Agfa Division, Bayer Corp. Method and apparatus for an automated plate handler with slip sheet removal mechanism
IL120959A (en) * 1997-05-30 2001-09-13 Creoscitex Corp Ltd Dynamic latches for plating plates with an outer drum
US6189452B1 (en) 1998-04-30 2001-02-20 Creoscitex Corporation Ltd. Apparatus for loading and unloading plates to external drum devices having movable clamps
DE19852343A1 (de) * 1998-11-13 2000-05-18 Heidelberger Druckmasch Ag Materialverpackung
US20030017035A1 (en) * 2000-05-15 2003-01-23 Solomon Yehuda Barnes Automatic printing plate feeding system
IL130018A (en) 1999-05-18 2003-04-10 Creoscitex Corp Ltd Automatic plate feeding system
US6425565B1 (en) 1999-11-16 2002-07-30 Creo Srl Method and apparatus for the use of suction cups on delicate surfaces
DE10015987A1 (de) * 2000-03-31 2001-10-18 Krause Biagosch Gmbh Belichtungsvorrichtung für Druckplatten
US6550388B2 (en) 2000-12-06 2003-04-22 Creo Products Inc. Apparatus and method for removing a thin deformable sheet
DE10104415A1 (de) 2001-02-01 2002-08-29 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Handhabung einer zu belichtenden Belichtungsfläche, insbesondere einer Druckplatte
US6601888B2 (en) 2001-03-19 2003-08-05 Creo Inc. Contactless handling of objects
US6745694B1 (en) * 2001-06-15 2004-06-08 Perkinelmer, Inc. Method and apparatus for a slipsheet removal system
DE10134151B4 (de) 2001-07-13 2005-05-25 Heidelberger Druckmaschinen Ag Vorrichtung zum Vereinzeln von Druckplatten
JP3845005B2 (ja) * 2001-12-12 2006-11-15 富士写真フイルム株式会社 画像記録材料枚葉装置
DE102004015195A1 (de) * 2004-03-29 2005-11-03 Heidelberger Druckmaschinen Ag Vorrichtung zum Vereinzeln von Druckplatten
GB2418176B (en) * 2004-09-15 2007-11-28 Fuji Photo Film Co Ltd Planographics printing plate feeding apparatus
US20070176447A1 (en) * 2006-01-30 2007-08-02 Xtreme Metal Fab., Inc. Truck rack having replaceable decorative inserts
US20080179002A1 (en) * 2007-01-30 2008-07-31 Gromadzki Jo A L Method and apparatus for separating a slip-sheet from an image recordable material
US7614619B2 (en) * 2007-01-30 2009-11-10 Eastman Kodak Company Methods and apparatus for separating image recordable materials from a media stack
US7604231B2 (en) * 2007-01-30 2009-10-20 Eastman Kodak Company Method and apparatus for separating media combinations from a media stack
US7744078B2 (en) * 2007-01-30 2010-06-29 Eastman Kodak Company Methods and apparatus for storing slip-sheets
US7891655B2 (en) * 2009-04-06 2011-02-22 Eastman Kodak Company Separating media combination from a media stack
KR20210059736A (ko) * 2018-09-12 2021-05-25 에이에스티이에스포 에스에이 분리 포일을 자동 제거하는 시트 취급 장치 및 그 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204521B (de) * 1963-09-09 1965-11-04 Robertson Photo Mechanix Inc Vorrichtung zum Abgeben lichtempfindlicher Bogen von einem Stapel
DE2125672B2 (de) * 1970-05-25 1973-09-27 Eastman Kodak Co., Rochester, N.Y. (V.St.A.) Bogenvereinzelungsvorrichtung mit bewegbaren Saughebern
FR2402231A1 (fr) * 1977-09-06 1979-03-30 Beach Mfg Corp Procede et appareil de traitement automatique de cliches a partir de plaques et de negatifs
EP0037064A2 (fr) * 1980-04-02 1981-10-07 Hoechst Aktiengesellschaft Dispositif pour le transport de plaques d'impression

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508479A (en) * 1966-10-14 1970-04-28 Fuji Photo Film Co Ltd Apparatus for adjusting the position of a sheet of film on a support member
US3504910A (en) * 1968-06-06 1970-04-07 Us Army Fluidic singulator
US4049255A (en) * 1976-03-08 1977-09-20 Xerox Corporation Apparatus for feeding documents to and from a copier
US4141457A (en) * 1977-06-02 1979-02-27 Sun Chemical Corporation Transfer arm assembly for plate making system
GB1583436A (en) * 1977-06-02 1981-01-28 Sun Chemical Corp Plate making system
US4082455A (en) * 1977-06-02 1978-04-04 Sun Chemical Corporation Plate making system
DE3025201A1 (de) * 1980-07-03 1982-01-28 Hoechst Ag, 6000 Frankfurt Vorrichtung fuer den transport und die positionierung von druckplatten
IT1137510B (it) * 1981-03-26 1986-09-10 Ezio Curti Dispositivo per disporre, rispettivamente per prelevare fogli di protezione da una pila di piastre di supporto per circuiti elttronici,nonche' per alimentare e scaricare le piastre di supporto

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204521B (de) * 1963-09-09 1965-11-04 Robertson Photo Mechanix Inc Vorrichtung zum Abgeben lichtempfindlicher Bogen von einem Stapel
DE2125672B2 (de) * 1970-05-25 1973-09-27 Eastman Kodak Co., Rochester, N.Y. (V.St.A.) Bogenvereinzelungsvorrichtung mit bewegbaren Saughebern
FR2402231A1 (fr) * 1977-09-06 1979-03-30 Beach Mfg Corp Procede et appareil de traitement automatique de cliches a partir de plaques et de negatifs
EP0037064A2 (fr) * 1980-04-02 1981-10-07 Hoechst Aktiengesellschaft Dispositif pour le transport de plaques d'impression

Also Published As

Publication number Publication date
EP0183084B1 (fr) 1988-03-02
JPS61114941A (ja) 1986-06-02
DE3440909A1 (de) 1986-05-15
US4667948A (en) 1987-05-26
DE3561712D1 (en) 1988-04-07
CA1233361A (fr) 1988-03-01
ATE32695T1 (de) 1988-03-15

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