EP0812686A2 - Procédé et dispositif pour mettre en place d'une plaque plane sur un cylindre porte-plaque arrangé en porte à faux d'une presse à imprimer - Google Patents

Procédé et dispositif pour mettre en place d'une plaque plane sur un cylindre porte-plaque arrangé en porte à faux d'une presse à imprimer Download PDF

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Publication number
EP0812686A2
EP0812686A2 EP97109541A EP97109541A EP0812686A2 EP 0812686 A2 EP0812686 A2 EP 0812686A2 EP 97109541 A EP97109541 A EP 97109541A EP 97109541 A EP97109541 A EP 97109541A EP 0812686 A2 EP0812686 A2 EP 0812686A2
Authority
EP
European Patent Office
Prior art keywords
plate
tube
plate cylinder
mandrel
pressure plate
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
EP97109541A
Other languages
German (de)
English (en)
Other versions
EP0812686A3 (fr
EP0812686B1 (fr
Inventor
Matthew Alan Taylor
Gregory William Weiss
John Joseph Dowling
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0812686A2 publication Critical patent/EP0812686A2/fr
Publication of EP0812686A3 publication Critical patent/EP0812686A3/fr
Application granted granted Critical
Publication of EP0812686B1 publication Critical patent/EP0812686B1/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
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/15—Machines with cylinders only supported on one side, e.g. cantilever construction
    • 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
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press
    • 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
    • B41P2227/62—Devices for introducing printing plates

Definitions

  • the present invention relates to a method and a device for applying a flat printing plate to a cantilevered plate cylinder of a printing press, in particular an offset web-fed printing press.
  • the plate In order to apply a conventional flat printing plate to the plate cylinder body of a rotary printing press, the plate must be wound around the plate cylinder body and fastened at its ends by a tensioning device.
  • a tensioning device In the printing machines of the prior art with a plate cylinder which is rotatably mounted in two bearings arranged in the left and the right machine side wall, the application of a flat printing plate is usually carried out by inserting a first bent end of the printing plate into a first groove of the clamping device Rotating the plate cylinder until the second end of the pressure plate can be inserted into a second groove of the tensioner, and then by actuating the tensioner, the pressure plate being tensioned and securely attached to the peripheral surface of the plate cylinder body.
  • a method for sliding a conventional printing plate onto a flying plate cylinder body laterally is e.g. B. is described in GB 2 286 365.
  • the process shows the problem that it is difficult to keep the flat printing plate in a cylindrical shape while maintaining the concentricity with the plate cylinder.
  • the inherent forces inherent in the resilient plate material usually aluminum
  • which cause the pressure plate to tend to remain in its original flat condition cause friction between the plate material and the plate cylinder body, which increases the forces that must be applied to the plate to be pushed onto the plate cylinder body, thus increasing the risk of damage to the plate.
  • Such damage can e.g. B. result in changes in the length of the flat plate or the geometry of the curved plate, which significantly affects the quality of the printed product.
  • a method of applying a planar printing plate to a flying plate cylinder of a printing machine comprises the following steps: the printing plate is first brought into a substantially cylindrical shape, preferably by hand, and then into a hollow tube with an inside diameter that is somewhat larger larger than the outer diameter of the plate cylinder body is inserted. The tube with the pressure plate is then pushed onto the plate cylinder body via a mandrel, the mandrel being arranged concentrically with the plate cylinder core and having an outside diameter which is smaller than the inside diameter of the tube and larger than the outside diameter of the plate cylinder body. The pressure plate is then clamped onto the cylinder by actuating a plate clamping device and the tube is pulled down from the plate cylinder.
  • the ends of the pressure plate are bent before the pressure plate is inserted into the tube, the mandrel having a recess in which the plate ends can move freely when the tube with the pressure plate is pushed onto the plate cylinder body.
  • the gap in the printing plate is aligned with the gap of the plate cylinder body by means of an identifier or mark on the tube.
  • the mandrel has a conical, tapering part in order to facilitate the insertion and guiding of the tube containing the pressure plate when it is moved onto the plate cylinder body.
  • air passage openings are provided in the circumferential surface of the mandrel in order to create an air bed which additionally facilitates the application of the tube and the pressure plate to the plate cylinder body.
  • the circumferential surface of the mandrel has a low coefficient of friction with respect to the material of the pressure plate.
  • the outer diameter of the mandrel and the inner diameter of the tube are selected so that when the tube with the pressure plate is pushed over the mandrel, the pressure plate is pressed into a circular cross section, the inner diameter of which is somewhat larger than the outer diameter of the plate cylinder body.
  • air passage openings are provided in the plate cylinder body, through which an air bed is created, on which the tube with the pressure plate is moved over the plate cylinder body.
  • the mandrel is permanently attached to the plate cylinder body. According to another embodiment of the invention, the mandrel is removed from the plate cylinder body during operation of the printing press.
  • the mandrel is mechanically or pneumatically expandable and is stretched in order to press the pressure plate against the inner surface of the tube after the front end of the tube with the plate has been moved over the mandrel.
  • the tensioning mechanism is actuated to release the ends of the pressure plate, and the tube with the pressure plate located therein is moved down from the plate cylinder body.
  • the compressed air is switched on when the tube with the pressure plate is removed from the plate cylinder body.
  • the mandrel has an arrangement of radially extending nozzles, through which an air cushion is formed, which forces the pressure plate against the inner surface of the tube when the tube with the pressure plate is pushed over the plate cylinder body.
  • a plate cylinder body 2 of a rotary printing press is overhung in a side wall 4a of the printing press in order to enable the printing plate 6 to be replaced while the printing press is at a standstill.
  • the printing plate 6 is a generally available flat offset printing plate which has first and second ends 8a, 8b which are usually bent in a known plate bending device before the plate is applied to the plate cylinder body 2.
  • the ends 8a and 8b are each received in grooves of a known tensioning device 10, which is arranged in the plate cylinder body 2, as is shown schematically in FIG. 3.
  • a tensioning device 10 Such a facility is e.g. B. from US 5,284,093.
  • the pressure plate 6 is preferably rolled up loosely by hand so that it assumes an essentially cylindrical shape, as shown in FIG. 1.
  • the pressure plate 6 is then inserted into a hollow tube 12 having an inner diameter d that is slightly larger than the outer diameter of the plate cylinder body 2.
  • the tube 12 is preferably made of a rigid material, e.g. B. plastic or metal, but it can also be formed from an elastic or partially elastic material.
  • the inner surface of the tube 12 consists, for example, of Teflon ", which has a low coefficient of friction, particularly with regard to the material of the pressure plate 6.
  • a mandrel 16 is mounted coaxially with the plate cylinder body 2, as shown in Figures 1 and 2.
  • the mandrel 16 can be attached to the plate cylinder body 2 either permanently or in an easily removable manner at the free end 14 of the plate cylinder body 2.
  • the mandrel 16 has a peripheral surface 18 which is somewhat larger than the outer diameter of the plate cylinder body 2, but somewhat smaller than the inner diameter d of the tube 12.
  • the peripheral surface 18 of the mandrel 16 can be somewhat conical and preferably also made of a material such. B. Teflon ", which has a low coefficient of friction, particularly with regard to the material of the pressure plate 6.
  • the front end of the tube 12, which is first moved onto the plate cylinder body 2 can have a conical, tapered section with a larger diameter than the diameter d of the rear end of the tube 12.
  • the mandrel 16 preferably has a recess 20 which allows free movement of the bent ends 8a, 8b of the pressure plate 6 when it is laterally on the plate cylinder body 2 is applied.
  • the tube 2 is arranged concentrically with respect to the mandrel 16 and then the tube 12 containing the pressure plate 6 is moved from the side over the mandrel 16 and onto the plate cylinder body 2, the mandrel 16 the pressure plate 6 against the Presses the inner surface of the tube 12 so that the pressure plate 6 assumes a circular shape which essentially corresponds to the round shape of the plate cylinder body 2. Since the pressure plate 6 fitted into the space formed between the inner surface of the tube 12 and the outer circumferential surface of the mandrel 16 is preferably in a tensioned state, this undergoes permanent, uniform deformation, so that the pressure plate 6 also passes after passing through the mandrel 16 keeps circular shape.
  • the clamping device 10 is actuated and the pressure plate is fastened so that it sits securely on the plate cylinder body 2.
  • the tube 12 is then removed laterally from the plate cylinder and the printing press can work.
  • the tube 12 When the pressure plate 6 is to be removed from the plate cylinder body 2, the tube 12 is moved from the side over the plate cylinder body 2, the tensioning device 10 is actuated to release the ends 8a, 8b of the pressure plate 6, and then the tube 12 together with the pressure plate 6 laterally moved down from the plate cylinder body 2. Because of the elastic forces remaining in the pressure plate 6, its outer surface contacts the inner surface of the tube 12 while it is being moved down by the plate cylinder body 2. In order to further reduce the risk of damage to the imaged surface of the printing plate, the tube 12 for removing the printing plate 6 can have a larger inner diameter d than the tube 12 which is used for the application of the printing plate 6.
  • the mandrel 16 can have a tapering part 22, which facilitates the application of the tube 12 with the loosely rolled-up pressure plate 6 to the mandrel 16.
  • the tapered part 22 has a diameter that increases in the direction of the plate cylinder body 2.
  • air nozzles or air passage openings 24 to which compressed air is supplied from a compressed air source 26, an air bed being created for the purpose of attaching the tube 12 with the pressure plate 6 to the plate cylinder body 2.
  • air passage openings or air nozzles 28 can also be provided in the peripheral surface of the plate cylinder body 2, which are connected to the same compressed air source 26.
  • the blown air or compressed air supplied to the air passage openings 24 and / or the air passage openings 28 is preferably controlled by a valve 30 which, for. B. can in turn be controlled by the central control unit 32 of the printing press or manually.
  • the compressed air supplied to the air passage openings 24, 28 is preferably switched on during the application and / or removal of the pressure plate 6 to and from the plate cylinder body 2, as already described above, an air bed being formed for this purpose.
  • an identifier or indexing device 34 can also be provided on the outer surface of the tube 12 in order to better fit the gap in the plate cylinder body 2 to that formed in the pressure plate 6 between the two ends 8a, 8b Align gap or hem.
  • the mandrel 16 is stretchable, so that its diameter either mechanically or by compressed air, the z. B. is supplied by the compressed air source 26 and the valve 30, can be enlarged or reduced.
  • the mandrel 16 has segments 150 which are supported on radially extending support elements 152.
  • the support elements 152 are arranged on the plate cylinder body 2 and allow the segments 150 to move radially with respect to the center of the plate cylinder body 2, as indicated by the broken lines in FIG. 3.
  • the segments 150 of the expandable mandrel 16 have a circumferential curvature 154 that corresponds to the curvature of the inner surface corresponds to the tube 12. As shown in FIG.
  • the support members 152 can be received in respective holes 153 formed in the segments 150, and the compressed air is supplied through air passage openings 155 located in the members 152, which act on the members 150 in such a way that that the elements 150 are forcibly moved away from the center of the mandrel 16.
  • the segments 150 are first in their inner position (see the solid lines in Fig. 3), and after the end of the tube 12 with the pressure plate 6 has been moved over the mandrel 16, the compressed air is switched on and the segments 150 are pressed by the compressed air against the inner surface of the tube 12, the pressure plate 6 being pressed against the inner surface of the tube 12 until the corresponding part of the pressure plate 6 assumes a circular shape.
  • the tube 12 is then pushed laterally onto the plate cylinder body 2, as already described above.
  • the compressed air for expanding the mandrel 16 is switched off and the mandrel 16 by elastic means, for. B. contracted by retaining springs (not shown) or supplying suction air instead of compressed air.
  • the mandrel 16 can have a series of radially extending nozzles 156 which are connected via a valve 30 to a compressed air source, e.g. B. the compressed air source 26 are connected.
  • a compressed air source e.g. B. the compressed air source 26 are connected.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP97109541A 1996-06-14 1997-06-12 Procédé et dispositif pour mettre en place d'une plaque plane sur un cylindre porte-plaque arrangé en porte à faux d'une presse à imprimer Expired - Lifetime EP0812686B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/666,695 US5711222A (en) 1996-06-14 1996-06-14 Method and apparatus for mounting a flat printing plate on a cantilevered plate cylinder of a printing press
US666695 1996-06-14

Publications (3)

Publication Number Publication Date
EP0812686A2 true EP0812686A2 (fr) 1997-12-17
EP0812686A3 EP0812686A3 (fr) 1998-07-08
EP0812686B1 EP0812686B1 (fr) 2000-05-10

Family

ID=24675047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109541A Expired - Lifetime EP0812686B1 (fr) 1996-06-14 1997-06-12 Procédé et dispositif pour mettre en place d'une plaque plane sur un cylindre porte-plaque arrangé en porte à faux d'une presse à imprimer

Country Status (4)

Country Link
US (1) US5711222A (fr)
EP (1) EP0812686B1 (fr)
JP (1) JP4046385B2 (fr)
DE (1) DE59701622D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0974459A1 (fr) * 1998-07-20 2000-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre blanchet dans une machine rotative
DE19844560A1 (de) * 1998-09-29 2000-03-30 Roland Man Druckmasch Verfahren und Vorrichtung zum Aufbringen einer Druckform auf einen Formzylinder

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10257746B3 (de) * 2002-12-10 2004-06-24 Man Roland Druckmaschinen Ag Formzylinder einer Rotationsdruckmaschine, insbesondere einer Offsetdruckmaschine
US5819657A (en) * 1996-03-11 1998-10-13 Ermino Rossini, Spa Air carrier spacer sleeve for a printing cylinder
IT1295088B1 (it) * 1997-09-26 1999-04-27 Rossini Erminio Spa Manicotto distanziatore per cilindri di stampa
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
US5921183A (en) * 1997-02-14 1999-07-13 Heidelberger Druckmaschienen Ag Narrow gap plate with insertable lock-up mechanism, and method of using the same
US5943955A (en) * 1997-08-29 1999-08-31 Goss Graphic Systems, Inc. Printing press having cantilevered self-driven cylinders
US6386103B1 (en) * 1999-10-22 2002-05-14 Heidelberger Druckmaschinen Ag Blanket tube removal device
US6550388B2 (en) * 2000-12-06 2003-04-22 Creo Products Inc. Apparatus and method for removing a thin deformable sheet
US6546867B1 (en) * 2001-04-30 2003-04-15 Heidelberger Druckmaschinen Ag Variable-diameter cylindrically-shaped body
EP1631457B1 (fr) * 2003-06-09 2009-04-15 Goss International, Inc. Presse pour impression offset a format variable
US7124685B2 (en) * 2004-05-18 2006-10-24 Meca & Technology Machine, Inc. Internally piped print cylinder and method for making same
US20070203433A1 (en) * 2006-02-27 2007-08-30 Murphy Martin P Relaxation inducing apparatus
US7997198B2 (en) * 2006-10-10 2011-08-16 Esko-Graphics Imaging Gmbh Plate drum loadable as a sleeve for an imaging device
KR100835724B1 (ko) 2007-06-28 2008-06-05 송승민 용기 인쇄장치의 멘드렐 구조체
JP2009285861A (ja) * 2008-05-27 2009-12-10 Masayuki Izume 印刷機用版および印刷機
ITMI20082225A1 (it) * 2008-12-16 2010-06-17 Rossini S P A Manica adattatrice per cilindri da stampa ad elevata rigidita'
JP2011136580A (ja) * 2011-03-07 2011-07-14 Universal Seikan Kk 缶の印刷装置及びスリーブ
JP5485206B2 (ja) * 2011-03-07 2014-05-07 ユニバーサル製缶株式会社 缶の印刷装置及びスリーブ
JP5896972B2 (ja) * 2013-10-25 2016-03-30 シコー株式会社 印刷機構
JP6405170B2 (ja) * 2014-09-18 2018-10-17 昭和アルミニウム缶株式会社 版装着治具および版装着方法
JP2016104532A (ja) * 2014-12-01 2016-06-09 昭和アルミニウム缶株式会社 印刷用版
JP7206145B2 (ja) * 2019-03-28 2023-01-17 アルテミラ製缶株式会社 スリーブ印刷版用版胴、スリーブ印刷版の固定方法、及び、缶の印刷装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE470937C (de) * 1929-02-02 Johannisberg G M B H Maschf Vorrichtung zum Aufbringen der geaetzten Rohre auf die Formzylinder von Rotationstiefdruckmaschinen
DE2542748A1 (de) * 1974-09-26 1976-04-15 Buckley M A Engraving Ltd Druckwalze fuer anilindruck und verfahren zu ihrem zusammenbau
US5072504A (en) * 1989-01-03 1991-12-17 International Composites Corporation Method for axially mounting and dismounting rigid sleeves onto, and from, cylinders
GB2286365A (en) * 1994-02-15 1995-08-16 Roland Man Druckmasch Changing the covering of a printing machine cylinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1483371A (en) * 1974-09-26 1977-08-17 Buckley Ltd M Printing processes and apparatus
JPS57107843A (en) * 1980-12-26 1982-07-05 Dainippon Printing Co Ltd Attaching method of sleeve plate to printing roll in gravure printing and printing roll
DE4106062C1 (fr) * 1991-02-27 1992-06-04 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5284093A (en) * 1993-02-24 1994-02-08 Heidelberg Harris Inc. Plate cylinder with semi-automatic plate lock up

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE470937C (de) * 1929-02-02 Johannisberg G M B H Maschf Vorrichtung zum Aufbringen der geaetzten Rohre auf die Formzylinder von Rotationstiefdruckmaschinen
DE2542748A1 (de) * 1974-09-26 1976-04-15 Buckley M A Engraving Ltd Druckwalze fuer anilindruck und verfahren zu ihrem zusammenbau
US5072504A (en) * 1989-01-03 1991-12-17 International Composites Corporation Method for axially mounting and dismounting rigid sleeves onto, and from, cylinders
GB2286365A (en) * 1994-02-15 1995-08-16 Roland Man Druckmasch Changing the covering of a printing machine cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0974459A1 (fr) * 1998-07-20 2000-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre blanchet dans une machine rotative
DE19844560A1 (de) * 1998-09-29 2000-03-30 Roland Man Druckmasch Verfahren und Vorrichtung zum Aufbringen einer Druckform auf einen Formzylinder
DE19844560C2 (de) * 1998-09-29 2001-05-17 Roland Man Druckmasch Vorrichtung und Verfahren zum Befestigen einer flexiblen Druckform
US6357354B1 (en) 1998-09-29 2002-03-19 Man Roland Druckmaschinen Ag Method and apparatus for fitting a printing plate to a plate cylinder

Also Published As

Publication number Publication date
US5711222A (en) 1998-01-27
DE59701622D1 (de) 2000-06-15
JP4046385B2 (ja) 2008-02-13
JPH1052907A (ja) 1998-02-24
EP0812686A3 (fr) 1998-07-08
EP0812686B1 (fr) 2000-05-10

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