EP0451574B1 - Vorrichtung zum Spannen von Platten auf einen Formzylinder einer Rotationsdruckmaschine - Google Patents

Vorrichtung zum Spannen von Platten auf einen Formzylinder einer Rotationsdruckmaschine Download PDF

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Publication number
EP0451574B1
EP0451574B1 EP91104495A EP91104495A EP0451574B1 EP 0451574 B1 EP0451574 B1 EP 0451574B1 EP 91104495 A EP91104495 A EP 91104495A EP 91104495 A EP91104495 A EP 91104495A EP 0451574 B1 EP0451574 B1 EP 0451574B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping spindle
support element
cylinder
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.)
Expired - Lifetime
Application number
EP91104495A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0451574A1 (de
Inventor
Klaus T. Reichel
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 EP0451574A1 publication Critical patent/EP0451574A1/de
Application granted granted Critical
Publication of EP0451574B1 publication Critical patent/EP0451574B1/de
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

Definitions

  • the present invention relates to a device for clamping plates on a forme cylinder of a rotary printing press according to the preamble of claim 1.
  • the forme cylinder has a symmetrical cylindrical pit running in the axial direction, in which a clamping spindle, which is provided with two longitudinal slots for receiving a plate end and is rotatable about its axis, is arranged.
  • a clamping spindle support is attached to one of the two pit walls in order to counteract the risk that the clamping spindle will bend due to its length. Since the forme cylinder can be used clockwise or counterclockwise, the clamping spindle support is arranged on the right or left pit wall in accordance with the intended direction of rotation of the forme cylinder.
  • This known tensioning device has the disadvantage that the tensioning spindle support has to be fastened to the pit wall and in particular has to be glued in order to prevent unintentional removal of the support and falling out of machine parts. This is a reversal of the direction of rotation of the forme cylinder, e.g. is not required for an impression unit.
  • the object of the invention is therefore to design a device for clamping plates on a forme cylinder of a rotary printing press so that the direction of rotation of the forme cylinder can still be freely selected even after it has been installed and that the clamping device can be adapted quickly and easily to the selected direction of rotation.
  • FIG. 1 shows a section of a section through the area of a forme cylinder 1 in which a cylinder pit 2 is formed.
  • the cylinder pit 2 is essentially formed from a cylindrical bore 3 arranged axially parallel to the forme cylinder 1 and two slots 4 and 5 arranged tangentially and symmetrically with respect to the cylindrical bore 3 for introducing pressure plate ends, with walls 6 and 7 of the slots 4 and 5 are also walls of the cylinder pit 2.
  • a clamping spindle 8 is rotatably mounted in the cylinder pit 2.
  • the clamping spindle 8 has two flutes 9 and 10 for receiving a plate end.
  • a support element 11 is arranged at the same distance from the flutes 9 and 10.
  • the support element 11 is preferably designed as a feather key which is fastened to the clamping spindle body with a screw 12 and which is ground on the circumference with the clamping spindle 8.
  • the feather key 11 can be adjusted in height by sheets 13 of different thickness.
  • FIG. 1 shows the clamping spindle 8 with the pressure plate 15 under tension with a right-hand rotating forme cylinder 1.
  • the front edge 16 of the pressure plate 15 is hooked onto the left upper edge of the cylinder pit 2, and the rear edge 17 is hooked into the right flute 9 as seen from the support element 11.
  • the clamping spindle 8 is turned to the left.
  • the support element 11 is rotated against the pit wall 7 and thus supports the clamping spindle 8.
  • FIG. 2 shows a tensioning device according to the invention with a tensioned pressure plate in a left-hand rotating forme cylinder 1.
  • the tensioning device according to FIG. 2 corresponds in all details to the tensioning device described with reference to FIG. 1. A detailed description of the elements of the device is therefore not given here.
  • FIG. 2 the elements corresponding to the elements from FIG. 1 are provided with the same reference symbols.
  • the clamping device shown in Fig. 2 differs from that shown in FIG. 1 only insofar as the front edge 16 of the pressure plate 15 is hooked onto the right upper edge of the cylinder pit 2 and as the rear edge 17 of the pressure plate 15 is hooked into the flute 10 seen from the support element 11.
  • the clamping spindle 8 is turned to the right.
  • the present invention has the advantage of being provided with a tension wire 14 or other tensioning aid, e.g. a plurality of clamping knobs, provided pressure plate 15 so that it can be clamped on the forme cylinder 1 so that it can be operated either clockwise or counterclockwise. If the forme cylinder 1 is to be operated with a printing plate to be subsequently clamped in the opposite direction of rotation, the clamping spindle 8 only needs to be brought into the corresponding starting position when the printing plate 15 is clamped in, without any changes to the clamping device, e.g. replacement of parts and in particular loosening and subsequent reattachment with a changed arrangement of a part of the clamping device are required. Furthermore, the tensioning device according to the invention avoids the risk of machine parts falling out and the associated risk of injury to operating personnel or damage to the printing press due to incorrect conversion of the support element.
  • a tension wire 14 or other tensioning aid e.g. a plurality of clamping knobs

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP91104495A 1990-04-10 1991-03-22 Vorrichtung zum Spannen von Platten auf einen Formzylinder einer Rotationsdruckmaschine Expired - Lifetime EP0451574B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9004130U 1990-04-10
DE9004130U DE9004130U1 (de) 1990-04-10 1990-04-10 Vorrichtung zum Spannen von Platten auf einen Formzylinder einer Rotationsdruckmaschine

Publications (2)

Publication Number Publication Date
EP0451574A1 EP0451574A1 (de) 1991-10-16
EP0451574B1 true EP0451574B1 (de) 1994-06-15

Family

ID=6852781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104495A Expired - Lifetime EP0451574B1 (de) 1990-04-10 1991-03-22 Vorrichtung zum Spannen von Platten auf einen Formzylinder einer Rotationsdruckmaschine

Country Status (5)

Country Link
US (1) US5074210A (ja)
EP (1) EP0451574B1 (ja)
JP (1) JP3088477B2 (ja)
CA (1) CA2037341C (ja)
DE (2) DE9004130U1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9116368U1 (de) * 1991-06-15 1992-08-20 Koenig & Bauer AG, 8700 Würzburg Einrichtung zum Befestigen von Drucktüchern auf Übertragungs- oder Offsetzylindern
DE4138925C2 (de) * 1991-11-27 1995-03-09 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE4238343C2 (de) * 1992-11-13 2003-03-27 Kocher & Beck Gmbh & Co Rotati Spannvorrichtung für ein Klischee
DE4444208A1 (de) * 1993-12-14 1995-06-22 Krause Biagosch Gmbh Vorrichtung und Verfahren zur Belichtung von Druckplatten
DE19729375A1 (de) * 1997-07-09 1999-01-14 Ltg Lufttechnische Gmbh Vorrichtung zum Befestigen einer biegsamen Platte auf dem Umfang des Zylinders einer Lackiermaschine
DE10060171C1 (de) * 2000-12-04 2002-05-23 Koenig & Bauer Ag Vorrichtung zum Befestigen eines Aufzuges auf einem Zylinder
US6578484B2 (en) 2001-06-14 2003-06-17 Masthead International, Inc. Printing plate lock-up assemblies having jaw assembly and registration pin assembly
US6739961B2 (en) * 2001-08-02 2004-05-25 Donald E. Haney Abrasive band tightening apparatus
US20080216691A1 (en) * 2007-03-05 2008-09-11 Stephens Ronald F Printing plate lock mechanisms
US20220168868A1 (en) * 2020-12-01 2022-06-02 Fortune Extendables Corp. Abrasive wheel which can be provided with a sandpaper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU371093A1 (ru) * 1970-04-17 1973-02-22 , вители Устройство для закрепления формной пластины на цилиндре
US4495865A (en) * 1983-03-15 1985-01-29 Komori Printing Machinery Co., Ltd. Plate clamping device of web-fed rotary printing press
DE3339185C2 (de) * 1983-10-28 1986-01-30 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Spannen von Platten auf einen Formzylinder einer Rotationsdruckmaschine
DE3884939T3 (de) * 1988-02-29 2000-12-28 Goss Graphic Systems, Inc. Spannungsloser Plattenverschluss.

Also Published As

Publication number Publication date
DE59101913D1 (de) 1994-07-21
DE9004130U1 (de) 1990-06-13
US5074210A (en) 1991-12-24
JPH04223167A (ja) 1992-08-13
CA2037341C (en) 1993-08-17
CA2037341A1 (en) 1993-08-17
EP0451574A1 (de) 1991-10-16
JP3088477B2 (ja) 2000-09-18

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