EP0628411A1 - Dispositif pour fixer une plaque d'impression flexible - Google Patents

Dispositif pour fixer une plaque d'impression flexible Download PDF

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Publication number
EP0628411A1
EP0628411A1 EP94108563A EP94108563A EP0628411A1 EP 0628411 A1 EP0628411 A1 EP 0628411A1 EP 94108563 A EP94108563 A EP 94108563A EP 94108563 A EP94108563 A EP 94108563A EP 0628411 A1 EP0628411 A1 EP 0628411A1
Authority
EP
European Patent Office
Prior art keywords
clamping
cylinder
pit
tensioning
connection
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
EP94108563A
Other languages
German (de)
English (en)
Other versions
EP0628411B1 (fr
Inventor
Gunnar Rau
Karl-Heinz Müller
Heinrich Schmid
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0628411A1 publication Critical patent/EP0628411A1/fr
Application granted granted Critical
Publication of EP0628411B1 publication Critical patent/EP0628411B1/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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means

Definitions

  • the invention relates to a device for fastening a flexible pressure plate according to the preamble of patent claim 1.
  • DE 31 16 506 C2 shows a device for fastening a flexible pressure plate, which contains a clamping pit with two pit walls running at an acute angle to the cylinder surface.
  • Two clamping bodies which are divided in the longitudinal direction of the pit and which clamp the plate legs between themselves and a pit wall, are used for tensioning.
  • the plate tension enables an automatic plate change, it requires a wide clamping channel due to the space required for the clamping bodies, which is equivalent to a loss of printing area.
  • this object is achieved in a generic device by using the features of the characterizing part of claim 1. Because the device has only one clamping body, the clamping channel can be kept narrow.
  • the forme cylinder 1 shown in detail in FIG. 1 has a cylinder pit 2 running in the axial direction. This contains a pit wall 3, 4 running at an acute angle and approximately perpendicular to the cylinder jacket.
  • a clamp body 5 cooperates with the pit walls 3, 4 and has clamping surfaces 6, 7 which are parallel to them.
  • the clamping body 5 is fixedly arranged on a clamping beam 8, which is supported by means of compression springs 9 in the base of the cylinder pit 2.
  • the clamping body 5 can for example be screwed to the clamping beam 8 or pressed into a groove.
  • the clamping beam 8 together with the clamping body 5 extends at least over the width of the pressure plate 11.
  • the pressure plate 11 is suspended with its leading plate leg 12 on the channel edge formed by the cylinder surface and the pit wall 3. It is clamped between the pit wall 3 and the clamping surface 6. During a subsequent rotation of the forme cylinder 1, the pressure plate is rolled up on it, advantageously using a pressure roller or the employed rubber cylinder. Finally, the trailing plate leg 13 between the pit wall 4 and the clamping body 5th indented. The insertion of the plate legs 12, 13 is facilitated by chamfers on the clamping body 5. To remove the pressure plate 11, the clamping body 5 together with the clamping beam 8 is pressed deeper into the cylinder pit 2 by means of the plate release device 14 against the force of the springs 9.
  • the trailing plate leg 13 jumps out of the clamping pit while canceling the wedge effect of the clamping body 5.
  • the leading plate leg 12 can also be removed from the plate clamping device after pressing the clamping body 5 again.
  • Fig. 2 shows a forme cylinder 16, in which a clamping beam 17 in the cylinder pit 18 extends to the ends of the cylinder jacket, up to the bearer rings 19, 20.
  • the clamping body is composed of lined-up clamping pieces 21 which are resiliently received in the clamping beam 17.
  • the division into clamping pieces brings manufacturing advantages.
  • good clamping of the pressure plate 22 on the pit walls is achieved.
  • the cylinder pit 18 corresponds to the geometry of the cylinder pit according to FIG. 1. Only the channel width can be kept narrower in the clamping pit 18 under certain circumstances, since the plate release 14 required in FIG. 1 can be omitted from explanations given below.
  • the tensioning beam 17 is supported by means of compression springs 23 in the base of the cylinder pit 18 (FIG.
  • Each clamping piece 21 is received in a groove 24 of the clamping beam 17 (Fig. 4). It is supported with springs 25 in the groove base.
  • Each clamping piece has unspecified clamping surfaces analogous to those of the clamping body from FIG. 1.
  • two sleeves 27 are screwed by means of screws 26 (FIG. 5) with which the clamping pieces 21 can be pushed in bores 28 of the clamping beam 17 in the clamping direction be performed.
  • a stop disc 29 is interposed, which covers the bore 28.
  • the clamping pieces 21 could also be guided in some other way, for example by means of pins or the side walls of the groove 24.
  • a plunger 32, 33 is arranged on each machine side wall 30, 31 and can be moved in the radial direction through a bore 34, 35 of the cylinder jacket of the forme cylinder 16 onto the clamping beam 17.
  • the pressure plate 22 is tensioned in the same way as in the previous exemplary embodiment according to FIG. 1.
  • the plate legs are tensioned by the clamping pieces 21, which are pressed into the wedge formed by the pit walls by the spring-loaded tensioning beam.
  • these spring somewhat into the clamping beam 17, a gap being formed between the stop disk 29 and the bore 28.
  • the forme cylinder 16 is positioned so that the bores 34, 35 of the cylinder jacket come to rest under the plungers 32, 33.
  • the plungers 32, 33 are extended, the clamping bar 17 is pressed against the force of the compression springs 23 in the direction of the bottom of the clamping pit 18. After the gap between the stop disk 29 and the bore 28 (FIG.
  • the clamping pieces 21 are also taken along, i.e. pulled from the wedge formed by the pit walls, and release the plate legs. Because there is no need for plate solvents to be introduced into the clamping channel, the clamping channel can be kept very narrow, for example 2 mm or smaller. Limits for its minimization are practically only set by the printing plate thickness and manufacturing requirements.
  • FIG. 6 and 10 show alternative variants for the actuation of clamping beams to FIG. 2. Only the actuating device at the left end of the forme cylinder jacket is shown. A similar device is located at the right end of the jacket. 6, the clamping beam 37 extends into the bearer ring 38 and ends in the region of a pressure chamber 39. The latter has a membrane 40 which can be deflected radially towards the clamping beam 37 and is connected to the connecting bore 41 through the cylinder jacket Outdoor atmosphere in connection.
  • the connecting shoe 43 of a compressed air source can be placed on the latter by means of a lifting device 42.
  • the connecting shoe 43 has the curvature of the cylinder jacket (FIG. 7), and its connecting opening 44 advantageously has the shape of an elongated hole (FIG. 8). Thanks to this elongated hole shape, the connection bore 41 does not need to be positioned exactly under the connection shoe 43 in order to release the pressure plate.
  • connection bore 45 of a pressure chamber leads out of the forme cylinder 46 at the end.
  • a connection opening 47 of the connection shoe 48 is designed in the form of a circular segment, and the latter is surrounded by a flat sealing surface.
  • the forme cylinder 36 In order to release the pressure plate, the forme cylinder 36 is positioned with its connection bore 41 under the connection shoe 43. After the connection shoe 43 has been lowered onto the lateral surface of the forme cylinder 36, the pressure chamber 39 is filled with compressed air, whereupon the membrane 40 presses the clamping bar 37 inwards. Similar to the previous example, the plate legs are released.
  • the clamping beam 49 of the forme cylinder 50 has an inclined plane 51.
  • a plunger 53 attached to the machine side wall 52 also carries an inclined plane 54.
  • the inclined planes 51 and 54 slide against one another and move the clamping beam 49 radially inward, the plate legs being released. The further loosening and also the tensioning of the printing plates takes place as indicated in the first embodiment.
  • the forme cylinder has only one cylinder pit for tensioning a printing plate. Also belonging to the scope of protection of the patent, several pits can be arranged on the circumference of the forme cylinder to evenly distribute a corresponding number of pressure plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP94108563A 1993-06-09 1994-06-03 Dispositif pour fixer une plaque d'impression flexible Expired - Lifetime EP0628411B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4319167 1993-06-09
DE4319167A DE4319167C2 (de) 1993-06-09 1993-06-09 Vorrichtung zum Befestigen einer biegsamen Druckplatte

Publications (2)

Publication Number Publication Date
EP0628411A1 true EP0628411A1 (fr) 1994-12-14
EP0628411B1 EP0628411B1 (fr) 1998-01-21

Family

ID=6489998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108563A Expired - Lifetime EP0628411B1 (fr) 1993-06-09 1994-06-03 Dispositif pour fixer une plaque d'impression flexible

Country Status (4)

Country Link
US (1) US5485783A (fr)
EP (1) EP0628411B1 (fr)
JP (1) JP2635514B2 (fr)
DE (2) DE4319167C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834774A3 (fr) * 2006-03-17 2007-12-12 MAN Roland Druckmaschinen AG Dispositif destiné à la fixation d'un habillage flexible sur un cylindre d'impression
EP1992487A3 (fr) * 2007-05-18 2010-04-28 manroland AG Dispositif de serrage pour plaques d'impression et cylindre de cliché

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509561C2 (de) * 1995-03-16 1997-10-23 Koenig & Bauer Albert Ag Vorrichtung zum Klemmen von Platten auf einem Zylinder
DE29600845U1 (de) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE19606744C2 (de) * 1996-02-23 1998-12-10 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
DE19703290A1 (de) * 1997-01-30 1998-08-06 Roland Man Druckmasch Vorrichtung zum Befestigen einer flexiblen Bespannung auf einem Druckzylinder
US6578484B2 (en) * 2001-06-14 2003-06-17 Masthead International, Inc. Printing plate lock-up assemblies having jaw assembly and registration pin assembly
US6880460B2 (en) 2002-03-15 2005-04-19 Dainippon Screen Mfg. Co., Ltd. Printing plate mounting apparatus
DE10218474A1 (de) * 2002-04-25 2003-11-20 Koenig & Bauer Ag Vorrichtungen zum Befestigen von mindestens einem Aufzug auf einem Zylinder einer Rotationsdruckmaschine und ein Druckwerk mit dieser Vorrichtung
DE10250684B3 (de) 2002-10-31 2004-04-01 Koenig & Bauer Ag Verfahren zur Herstellung eines Rotationskörpers und Rotationskörper einer Druckmaschine
DE102004034049A1 (de) * 2004-07-13 2006-02-09 Man Roland Druckmaschinen Ag Formzylinder einer Rollenrotationsdruckmaschine
US20080216691A1 (en) * 2007-03-05 2008-09-11 Stephens Ronald F Printing plate lock mechanisms
US8265724B2 (en) * 2007-03-09 2012-09-11 Nellcor Puritan Bennett Llc Cancellation of light shunting
DE102007054935A1 (de) * 2007-11-17 2009-05-20 Manroland Ag Druckmaschinenzylinder
DE102007054936A1 (de) * 2007-11-17 2009-05-20 Manroland Ag Spanneinrichtung
DE102008019975A1 (de) * 2008-04-21 2009-10-22 Manroland Ag Spanneinrichtung für Druckplatten und damit ausgerüsteter Formzylinder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173916B (de) * 1962-07-28 1964-07-16 Rena Bueromaschinen Fabrik G M Vorrichtung zum Einspannen einer Druck-form auf der Drucktrommel eines Rotations-vervielfaeltigers
DE1263022B (de) * 1963-12-03 1968-03-14 Paper Converting Machine Co Einrichtung zum Befestigen einer biegsamen Druckplatte am Plattenzylinder einer Druckmaschine
DE2545618A1 (de) * 1975-10-11 1977-04-21 Frankenthal Ag Albert Formzylinder fuer tiefdruck mit einer magnetisch aufgespannten wickelplatte
DE4035616A1 (de) * 1989-12-22 1991-06-27 Plamag Plauener Maschinenbau A Vorrichtung zum befestigen einer biegsamen druckplatte

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262191C (fr) *
US3608487A (en) * 1969-08-27 1971-09-28 Harris Intertype Corp Flexible plate clamping assembly including inwardly bowed spring and movable jaw
GB1556389A (en) * 1977-05-02 1979-11-21 Linotype Machinery Ltd Printing machines
DE3116506C2 (de) * 1981-04-25 1984-05-17 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Befestigen einer Druckplatte auf dem Formzylinder einer Rotationsdruckmaschine
DD262191A1 (de) * 1987-07-02 1988-11-23 Polygraph Leipzig Vorrichtung zum befestigen einer biegsamen druckplatte
US5010818A (en) * 1988-02-29 1991-04-30 Rockwell International Corporation Tensionless plate lock-up
DE3884939T3 (de) * 1988-02-29 2000-12-28 Goss Graphic Systems, Inc. Spannungsloser Plattenverschluss.
DE9210964U1 (de) * 1991-08-16 1992-11-12 Koenig & Bauer AG, 8700 Würzburg Einrichtung zum Spannen und Justieren von biegsamen Druckplatten auf Plattenzylindern von Rotationsdruckmaschinen
US5272977A (en) * 1992-02-05 1993-12-28 Toshiba Kikai Kabushiki Kaisha Printing plate mounting apparatus, printing plate replacement apparatus and printing plate replacement method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173916B (de) * 1962-07-28 1964-07-16 Rena Bueromaschinen Fabrik G M Vorrichtung zum Einspannen einer Druck-form auf der Drucktrommel eines Rotations-vervielfaeltigers
DE1263022B (de) * 1963-12-03 1968-03-14 Paper Converting Machine Co Einrichtung zum Befestigen einer biegsamen Druckplatte am Plattenzylinder einer Druckmaschine
DE2545618A1 (de) * 1975-10-11 1977-04-21 Frankenthal Ag Albert Formzylinder fuer tiefdruck mit einer magnetisch aufgespannten wickelplatte
DE4035616A1 (de) * 1989-12-22 1991-06-27 Plamag Plauener Maschinenbau A Vorrichtung zum befestigen einer biegsamen druckplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834774A3 (fr) * 2006-03-17 2007-12-12 MAN Roland Druckmaschinen AG Dispositif destiné à la fixation d'un habillage flexible sur un cylindre d'impression
EP1992487A3 (fr) * 2007-05-18 2010-04-28 manroland AG Dispositif de serrage pour plaques d'impression et cylindre de cliché
US7966933B2 (en) 2007-05-18 2011-06-28 Man Roland Druckmaschinen Ag Apparatus and method for clamping printing plates on a plate cylinder

Also Published As

Publication number Publication date
DE4319167C2 (de) 1995-04-27
US5485783A (en) 1996-01-23
EP0628411B1 (fr) 1998-01-21
JPH079670A (ja) 1995-01-13
DE4319167A1 (de) 1994-12-15
DE59405065D1 (de) 1998-02-26
JP2635514B2 (ja) 1997-07-30

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