EP0732204A1 - Dispositif pour enlever une plaque d'impression d'un cylindre - Google Patents

Dispositif pour enlever une plaque d'impression d'un cylindre Download PDF

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Publication number
EP0732204A1
EP0732204A1 EP96103838A EP96103838A EP0732204A1 EP 0732204 A1 EP0732204 A1 EP 0732204A1 EP 96103838 A EP96103838 A EP 96103838A EP 96103838 A EP96103838 A EP 96103838A EP 0732204 A1 EP0732204 A1 EP 0732204A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
plate
lifter
slot
spindle
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
EP96103838A
Other languages
German (de)
English (en)
Other versions
EP0732204B1 (fr
Inventor
Wolfgang Günter Ruckmann
Jürgen Alfred Stiel
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0732204A1 publication Critical patent/EP0732204A1/fr
Application granted granted Critical
Publication of EP0732204B1 publication Critical patent/EP0732204B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/60—Devices for transferring printing plates
    • B41P2227/63—Devices for removing printing plates

Definitions

  • the invention relates to a device for releasing plates with bent ends from a cylinder of a rotary printing press according to the preamble of claim 1.
  • DE 43 03 381 A1 shows a plate cylinder with a device for lifting a printing plate.
  • the plate cylinder below the pressure plate has pressurized air bores for lifting the pressure plate.
  • a disadvantage of this plate cylinder is that complex compressed air supplies are necessary.
  • the invention has for its object to provide a device for releasing plates with bent ends from a cylinder of a rotary printing press, with which at least one bent end of the plate can be detached from the cylinder.
  • the device according to the invention is shown in the drawing and is described in more detail below.
  • a cylinder 1 of a rotary printing machine for receiving flexible plates 2 with bent ends 3, 4 with at least one narrow slot 7 extending parallel to its axis of rotation and extending from a lateral surface 6 of the cylinder 1 into its interior 5.
  • One leg 8 of the leading end 3 is longer in the present example than a corresponding leg 9 of the trailing end 4 of the plate 2.
  • the slot 7 is preferably rectangular in cross section.
  • a bore 12 running parallel to the slot 7 is made in the cylinder 1.
  • the slot 7 tangent to the bore 12 in the form of a chord, so that the bore 12 is connected to the slot 7.
  • This spindle 16 is provided in the axial direction with a number of pressure pieces 17 pointing radially outwards.
  • the pressure pieces 17 are fastened in the spindle 16 in such a way that their pressure cams 18 can act resiliently beyond a lateral surface 19 of the spindle 16.
  • the operation of the device according to the invention is as follows: In an insertion position (FIG. 1) of the spindle 16, the reduced lateral surface 22 of the spindle 16 is located in the area of the slot 7. In this position, the two bent ends 3, 4 of the plate 2 are guided into the slot 7, the reduced lateral surface 22 serves as a guide. To clamp the ends 3, 4 of the plate 2, the spindle 16 is rotated counterclockwise until the pressure pieces 17 are approximately perpendicular with respect to the legs 8, 9 of the ends 3, 4 of the plate 2. The pressure cams 18 of the pressure pieces 17 are pressed by means of spring force supported on the spindle 16 against the legs 8, 9 of the ends 3, 4 of the plate 2.
  • the ends 3, 4 of the plate 2 are fixed in the slot 7 of the cylinder 1 (Fig. 2).
  • the spindle 16 By turning the spindle 16 counterclockwise, ie with the pressure cams 18 acting in the direction of the inside of the cylinder, the ends 3, 4 are tensioned by means of an inward tensile force.
  • the spindle 16 is locked in this clamping position.
  • the spindle 16 is rotated clockwise, whereupon the pressure pieces 17 release the ends 3, 4.
  • the pressure pieces 17 are guided into the bore 12, in which the pressure pieces 17 are supported on the lateral surface 13 of the bore 12. Due to the rotational movement of the spindle 16, free ends 28 of the lifters 27 now reach the region of the trailing end 4 of the plate 2 and their end faces 31 abut against an end face 29 of the leg 9 of the trailing end 4.
  • the lifters 27 spring outwards into their extended position so that the lifters 27 are tangential to the spindle 16 and are guided into the slot 7 in the direction of the beginning (10) of the slot 7.
  • the spindle 16 is rotated until the ends 28 of the lifters 27 are just below the outer surface 6 of the cylinder 1.
  • the trailing end 4 of the plate 2 is completely removed from the slot 7 by means of the lifter 27 and can spring away from the lateral surface 6 of the cylinder 1 due to the inherent tension of the plate 2.
  • lifters 27 acting on the trailing end 4 of the plate 2
  • the device according to the invention can also act simultaneously on both ends 3, 4 of the plate 2 or a separate device can be provided for each end 3, 4.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP96103838A 1995-03-16 1996-03-12 Dispositif pour enlever une plaque d'impression d'un cylindre Expired - Lifetime EP0732204B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509562A DE19509562C1 (de) 1995-03-16 1995-03-16 Vorrichtung zum Lösen von Platten von einem Zylinder
DE19509562 1995-03-16

Publications (2)

Publication Number Publication Date
EP0732204A1 true EP0732204A1 (fr) 1996-09-18
EP0732204B1 EP0732204B1 (fr) 1998-06-03

Family

ID=7756855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103838A Expired - Lifetime EP0732204B1 (fr) 1995-03-16 1996-03-12 Dispositif pour enlever une plaque d'impression d'un cylindre

Country Status (4)

Country Link
US (1) US5651315A (fr)
EP (1) EP0732204B1 (fr)
JP (1) JP3092695B2 (fr)
DE (2) DE19509562C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19533178C2 (de) * 1995-09-08 1997-06-26 Koenig & Bauer Albert Ag Zylinder
DE19642141C1 (de) * 1996-10-12 1998-06-18 Koenig & Bauer Albert Ag Vorrichtung zum Lösen von Platten
DE19719559A1 (de) * 1997-05-09 1998-11-12 Koenig & Bauer Albert Ag Verfahren und Vorrichtung zur Montage biegsamer Druckplatten

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016010A (en) * 1959-08-20 1962-01-09 Cottrell Company Printing press plate clamping means for prebent wrap around printing plates of soft material
DE4303381A1 (de) * 1993-02-05 1994-12-01 Roland Man Druckmasch Plattenzylinder mit einer Einrichtung zum Anheben einer Druckplatte

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE290623C (fr) *
DD290623B3 (de) * 1989-12-22 1992-09-03 Erwin Dimmel Vorrichtung zum befestigen einer biegsamen druckplatte
DE4238343C2 (de) * 1992-11-13 2003-03-27 Kocher & Beck Gmbh & Co Rotati Spannvorrichtung für ein Klischee
DE4335140C1 (de) * 1993-10-15 1995-02-02 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016010A (en) * 1959-08-20 1962-01-09 Cottrell Company Printing press plate clamping means for prebent wrap around printing plates of soft material
DE4303381A1 (de) * 1993-02-05 1994-12-01 Roland Man Druckmasch Plattenzylinder mit einer Einrichtung zum Anheben einer Druckplatte

Also Published As

Publication number Publication date
US5651315A (en) 1997-07-29
JP3092695B2 (ja) 2000-09-25
JPH08267717A (ja) 1996-10-15
DE59600235D1 (de) 1998-07-09
EP0732204B1 (fr) 1998-06-03
DE19509562C1 (de) 1996-08-14

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