EP0339228B1 - Dispositif à tensionner pour la fixation d'un film flexible - Google Patents

Dispositif à tensionner pour la fixation d'un film flexible Download PDF

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Publication number
EP0339228B1
EP0339228B1 EP89104456A EP89104456A EP0339228B1 EP 0339228 B1 EP0339228 B1 EP 0339228B1 EP 89104456 A EP89104456 A EP 89104456A EP 89104456 A EP89104456 A EP 89104456A EP 0339228 B1 EP0339228 B1 EP 0339228B1
Authority
EP
European Patent Office
Prior art keywords
clamping
cylinder
support bar
gripper support
gripper
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
EP89104456A
Other languages
German (de)
English (en)
Other versions
EP0339228A2 (fr
EP0339228A3 (en
Inventor
Harry Brandes
Rudolf Raab
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
Priority to AT89104456T priority Critical patent/ATE70778T1/de
Publication of EP0339228A2 publication Critical patent/EP0339228A2/fr
Publication of EP0339228A3 publication Critical patent/EP0339228A3/de
Application granted granted Critical
Publication of EP0339228B1 publication Critical patent/EP0339228B1/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
    • B41F27/1225—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 substantially rectilinearly
    • B41F27/1231—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 substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

  • the invention relates to a tensioning device for fastening a flexible film at the beginning of the pressure of a cylinder having a gripper bar of a printing press.
  • the fastening device for the film at the beginning of printing consists of at least one angle iron, which can be pivoted against the force of a spring with one leg supported on the bottom of the cylinder duct by a screw element, the other leg of the angle iron having a thickening in the form of Clamping rails provided end of the film is gripped and the film can thus be moved radially into the cylinder interior. This not only results in a large pit opening, but also a large pit depth.
  • a counter-pressure cylinder 4 15 individual sheet grippers 14 are arranged on a gripper shaft.
  • the movement of the sheet gripper 14 is carried out by movement elements, not shown.
  • the gripper tip of the sheet grippers 14 clamps the material sheets 10 on the gripper bar 3, these e.g. consist of two divided rails, which are fastened directly or via spacers in the cylinder pit 5 of the impression cylinder 4 by means of fastening screws 16.
  • a flexible film 1, plate or the like can be clamped on the impression cylinder 4 by means of clamping and tensioning devices 18 at the end of the print.
  • the end of the flexible film 1 located at the start of printing 2 is clamped by means of clamping rails 7, 8 or the like thickening.
  • the end of the film 1 is connected between the two clamping rails 7, 8 by screws or rivets 17.
  • the clamping rails 7, 8 are passed together with the end of the flexible film into the cylinder pit 5 between the pit wall 6 and the gripper bar 3, for which purpose these are to be pushed from the opposite pit wall 6 after loosening the fastening screws 16.
  • the one clamping rail 7 is arranged below the gripper bar 3 and the clamping rail 8 is guided in a recess 9 located behind the pit wall 6 on contact surfaces of the cylinder pit 5 during tensioning.
  • eccentric bolts 11 are rotatably mounted in the gripper bars 3, which penetrate them transversely with a clamping spiral 12.
  • the clamping spiral 12 of each eccentric bolt 11 lies on an engagement surface 13 of a clamping rail 7 self-locking from above.
  • the eccentric bolts 11 are rotated together with the clamping spirals 12, as a result of which the clamping rail 7 with the clamping rail 8 guided in the cutout 9 moves with the end of the film 1 radially downward from the gripper bar 3 into the cylinder interior.
  • the film 1 is stretched on the impression cylinder 4 from the start of printing. Since the printing end can also be tensioned by means of the clamping and tensioning device 18, both ends of the film 1 can thus be tensioned independently of one another. Since the clamping rails 7, 8 extend over the entire length of the cylinder pit 5, they can be pulled uniformly in the tensioning direction, ie towards the pit floor, by the eccentric bolts 11, which are distributed uniformly over their length.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (1)

1. Dispositif de tension pour fixer une feuille souple en début d'impression d'un cylindre, présentant des baguettes d'impact des preneurs, d'une machine imprimante, dans lequel l'extrémité de la feuille, guidée dans le canal du cylindre entre la paroi du canal et les baguettes d'impact des preneurs, peut être fixée au moyen de rails de serrage ou d'épaississements analogues, lesquels sont guidés sur des surfaces d'appui dans le canal du cylindre au-dessous des baguettes d'impact des preneurs et peuvent être éloignés, par des éléments de tension, des baguettes d'impact des preneurs radialement vers le bas à l'intérieur du cylindre, caractérisé en ce que, en tant qu'éléments de tension, des boulons excentriques (11) munis d'une spirale de serrage (12) sont montés rotatifs dans les baguettes d'impact des preneurs (3), en pénétrant transversalement dans celles-ci, et en ce que la spirale de serrage (12) de chaque boulon excentrique (11) repose du haut de façon autobloquante sur une surface d'engagement (13) d'un rail de serrage (7), agencé au-dessous des baguettes d'impact des preneurs (3), de la paire de rails de serrage (7, 8).
EP89104456A 1988-04-23 1989-03-14 Dispositif à tensionner pour la fixation d'un film flexible Expired - Lifetime EP0339228B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89104456T ATE70778T1 (de) 1988-04-23 1989-03-14 Spanneinrichtung zum befestigen einer biegsamen folie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3813777A DE3813777A1 (de) 1988-04-23 1988-04-23 Spanneinrichtung zum befestigen einer biegsamen folie
DE3813777 1988-04-23

Publications (3)

Publication Number Publication Date
EP0339228A2 EP0339228A2 (fr) 1989-11-02
EP0339228A3 EP0339228A3 (en) 1990-01-03
EP0339228B1 true EP0339228B1 (fr) 1991-12-27

Family

ID=6352745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104456A Expired - Lifetime EP0339228B1 (fr) 1988-04-23 1989-03-14 Dispositif à tensionner pour la fixation d'un film flexible

Country Status (4)

Country Link
EP (1) EP0339228B1 (fr)
AT (1) ATE70778T1 (fr)
DE (2) DE3813777A1 (fr)
ES (1) ES2029357T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034494C1 (fr) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
GB2258842A (en) * 1991-08-21 1993-02-24 Billows Limited Apparatus for, and method of, mounting a printing plate on a cylinder of a printing press
DE9207780U1 (de) * 1992-06-10 1992-10-22 MAN Roland Druckmaschinen AG, 6050 Offenbach Einrichtung zum Betätigen einer Klemmschiene gegenüber der Spannschiene des Plattenzylinders einer Druckmaschine
DE4238121C2 (de) * 1992-11-12 1996-01-11 Roland Man Druckmasch Vorrichtung zum Spannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
DE4424930C2 (de) 1994-07-14 1996-08-14 Koenig & Bauer Albert Ag Vorrichtung zum Befestigen von Aufzügen auf Druckzylindern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL229234A (fr) * 1957-07-04
DE1561082A1 (de) * 1967-06-20 1970-04-16 Albert Schnellpressen Vorrichtung zum Einspannen des Druckzylinderaufzuges an Druckmaschinen
DE3109859C2 (de) * 1981-03-14 1983-05-11 Albert-Frankenthal Ag, 6710 Frankenthal Gummituchspannvorrichtung

Also Published As

Publication number Publication date
EP0339228A2 (fr) 1989-11-02
DE3813777A1 (de) 1989-11-02
DE3813777C2 (fr) 1992-12-03
ES2029357T3 (es) 1992-08-01
EP0339228A3 (en) 1990-01-03
ATE70778T1 (de) 1992-01-15
DE58900612D1 (de) 1992-02-06

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