EP0246499B1 - Dispositif de serrage pour plaques d'impression - Google Patents

Dispositif de serrage pour plaques d'impression Download PDF

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Publication number
EP0246499B1
EP0246499B1 EP87106592A EP87106592A EP0246499B1 EP 0246499 B1 EP0246499 B1 EP 0246499B1 EP 87106592 A EP87106592 A EP 87106592A EP 87106592 A EP87106592 A EP 87106592A EP 0246499 B1 EP0246499 B1 EP 0246499B1
Authority
EP
European Patent Office
Prior art keywords
clamping
cylinder
strip
strips
printing plates
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
EP87106592A
Other languages
German (de)
English (en)
Other versions
EP0246499A3 (en
EP0246499A2 (fr
Inventor
Joachim Dorow
Gerhard Bleckmann
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to AT87106592T priority Critical patent/ATE75666T1/de
Publication of EP0246499A2 publication Critical patent/EP0246499A2/fr
Publication of EP0246499A3 publication Critical patent/EP0246499A3/de
Application granted granted Critical
Publication of EP0246499B1 publication Critical patent/EP0246499B1/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
    • 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
    • B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler

Definitions

  • the invention relates to a device for tensioning printing plates (hereinafter referred to as a plate) for web-fed rotary printing presses with at least one clamping bar arranged laterally displaceably in a cylinder recess and engaging under an end region of the plate to be tensioned, the outer contour of which has a curvature corresponding to the cylinder curvature and by a bent one Edge claw of the pressure surface to be tensioned plate is limited, and a tube is inserted between the pressure surfaces of the tensioning strips and a squeeze strip radially adjustable against the circumference of the cylinder, and the squeeze strip is designed as a pressure element for the hose.
  • a device of this type is known from DE-OS 3 401 760.
  • This known device consists of two clamping bars which are arranged in a cylinder recess and have an L-shaped cross section and can be moved in opposite directions towards and away from one another.
  • the outer contour of the two clamping strips i.e. the radially outer end face of the standing legs facing each other has a curvature corresponding to the cylinder curvature.
  • the mutually facing, radially outer edges of the two clamping strips are designed as beaked edges with clamping surfaces angled at an acute angle to the circumferential contour, which delimit an outwardly converging clamping channel.
  • the mutually facing, lying legs of the clamping strips engage in a respectively assigned, cylinder-side guide groove, which are limited on the one hand by the bottom of the recess and on the other hand by insert pieces provided in the region of the side flanks of the cylinder recess and undercut by the lying legs of the clamping strips, which prevents them from tipping over Storage and easy assembly and disassembly of the clamping strips results.
  • the inserts whose outer contour also corresponds to the cylinder contour, are screwed to the cylinder.
  • the plate to be clamped is provided with edge claws angled at an acute angle in the area of its ends, which overlap the clamping surfaces.
  • a strip inserted into the clamping channel is provided, here in the form of a hard rubber or plastic strip, which at the same time acts as a sealing strip which seals the clamping channel radially inwards, so that the clamping channel after clamping the plate with a Filling can be filled in, which is necessary for gravure printing.
  • the tensioning strips have compared to the inserts So much movement play that the plate to be tensioned can be hooked onto the respectively assigned beak edges with its claws bent at an acute angle.
  • each one is assigned a clamping spindle that is supported on the cylinder side and engages radially on the rear side of the standing leg of the clamping bars and has a non-circular cross-section, so that the associated clamping bar is displaced by rotating the clamping spindles is accomplished.
  • the continuous clamping spindles are supported on the cylinder side along their entire length, so that deflection does not occur.
  • the circumferential contour of the two clamping bars automatically reaches the same position with each clamping process. This ensures that there is no discontinuity in the cylinder circumference in the clamping position.
  • the clamping spindles are provided in the region of one end with a head which projects beyond the cylinder side and on which a key can be attached, with the aid of which a rotation of the clamping spindles is possible.
  • the corresponding clamping spindle is fixed against unintentional rotation by means of a special arrangement, so that an automatic return from the clamping position to the relaxed position is not possible.
  • supported springs can be arranged, for example, on the mutually facing flanks of the two tensioning strips.
  • the hose is provided with openings formed radially in the direction of the pressure plate and is filled with gap sealing compound, and the tensioning bar is adjustable in the tensioning direction of the pressure plates by means of at least two hydraulic cylinders which are supported on their rear side and the adjacent cylinder-fixed wall.
  • the insertable, elastic bar is designed as a plastic tube or hose - filled with gap sealing compound - with openings radially in the direction of the pressure plate.
  • the drawing shows a radial section through the device according to the invention with 2 clamping bars.
  • the device shown in the drawing corresponds in its structure and in its mode of operation essentially to the device as described in DE-OS 34 01 760 and at the beginning of this document.
  • the mutually facing, radially outer edges of the two clamping strips are designed as beak edges with clamping surfaces 3 which are angled at an acute angle with respect to the circumferential contour and which delimit a clamping channel 4 which converges towards the outside.
  • a plastic tube 7, a deformable tube or the like - filled with gap sealing compound - is arranged, which over its entire length - corresponds to the cylinder length - is provided with openings in the direction of the plate to be tensioned.
  • at least 2 commercially available hydraulic cylinders 8 are incorporated into the insert pieces, once for pressing the clamping bars against one another and once for pressing the clamping bars apart. These hydraulic cylinders are supported on the back of the insert pieces on the wall fixed to the cylinder.
  • the plate 9 to be clamped is provided in the region of its ends with edge claws 10 which are angled at an acute angle and overlap the clamping surfaces.
  • a shaped piece 12 which forms the upper limit for the gap closure.
  • the squeeze bar also fulfills a second function, namely when the plate is changed - that is, when a new plate is clamped onto the cylinder - pushes the deformed plastic hose 7 out of the cylinder.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Screen Printers (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Claims (1)

  1. Dispositif pour tendre des plaques d'impression (9) pour machines à imprimer rotatives à bobines, comportant au moins une barrette tendeuse (2) montée mobile latéralement dans un évidement (1) du cylindre et s'appliquant sous une zone d'extrémité de la plaque d'impression à tendre, et dont le contour extérieur a une courbure correspondant à celle du cylindre et est limité par une surface de pression (3) s'appliquant contre une griffe de bord repliée de la plaque d'impression à tendre, un tube flexible (7) étant placé entre les surfaces de pression des barrettes tendeuses et une barrette de compression (6) mobile radialement vers le pourtour du cylindre, et la barrette de compression constituant un élément de serrage de ce tube, caractérisé par le fait que le tube flexible est pourvu d'orifices ménagés radialement en direction de la plaque d'impression et est rempli de matière d'obturation d'interstice, la barrette tendeuse étant déplaçable dans la direction de tension des plaques d'impression au moyen d'au moins deux vérins hydrauliques (8) s'appuyant sur son dos et contre la paroi fixe du cylindre, voisine.
EP87106592A 1986-05-15 1987-05-07 Dispositif de serrage pour plaques d'impression Expired - Lifetime EP0246499B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106592T ATE75666T1 (de) 1986-05-15 1987-05-07 Vorrichtung zum spannen von druckplatten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863616425 DE3616425A1 (de) 1986-05-15 1986-05-15 Vorrichtung zum spannen von druckplatten
DE3616425 1986-05-15

Publications (3)

Publication Number Publication Date
EP0246499A2 EP0246499A2 (fr) 1987-11-25
EP0246499A3 EP0246499A3 (en) 1989-10-11
EP0246499B1 true EP0246499B1 (fr) 1992-05-06

Family

ID=6300921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106592A Expired - Lifetime EP0246499B1 (fr) 1986-05-15 1987-05-07 Dispositif de serrage pour plaques d'impression

Country Status (6)

Country Link
US (1) US4809607A (fr)
EP (1) EP0246499B1 (fr)
JP (1) JPS62271743A (fr)
AT (1) ATE75666T1 (fr)
DE (2) DE3616425A1 (fr)
ES (1) ES2030675T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100408C1 (fr) * 1991-01-09 1992-05-14 Man Miller Druckmaschinen Gmbh, 6222 Geisenheim, De
DE4404758C2 (de) * 1994-02-15 1996-06-27 Roland Man Druckmasch Verfahren und Vorrichtung zum Wechseln der Bespannung eines Zylinders einer Rollenrotationsdruckmaschine
US5701823A (en) * 1997-01-27 1997-12-30 Morris; Jerry L. Self aligning tool for registering rotary printing plates and method of registering plates
DE19956833B4 (de) * 1999-11-12 2009-04-23 Dr. Johannes Heidenhain Gmbh Winkelmeßsystem

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011437A (en) * 1959-01-31 1961-12-05 Aller Press As Mechanism for clamping flexible printing plates to the plate cylinder of machines for flat printing
US3058417A (en) * 1959-05-22 1962-10-16 Nils H V Norlin Mechanism for clamping plates to the cylinders of printing machines
DE1125948B (de) * 1959-09-05 1962-03-22 Maschf Augsburg Nuernberg Ag Vorrichtung zum Aufspannen von biegsamen Druckplatten
SE403353B (sv) * 1977-02-28 1978-08-14 Daetwyler & Co M Med bojliga tryckplattor forsedd och i sin lengdriktning delad formcylinder for rotationsdjuptryckmaskiner
DK159251C (da) * 1983-03-12 1991-02-18 Basf Ag Fremgangsmaade til lukning af spalten mellem en paa et dybtrykapparats trykformcylinder opspaendt dybtrykplades ender, samt indretning ved dybtryksapparatet, til udoevelse af fremgangsmaaden
CH653616A5 (fr) * 1983-07-26 1986-01-15 De La Rue Giori Sa Procede de fixation et d'ajustage d'une plaque d'impression sur un cylindre porte-plaques et dispositif de mise en oeuvre.
EP0142874B1 (fr) * 1983-11-14 1988-04-27 De La Rue Giori S.A. Cylindre d'impression avec dispositif de fixation des clichés en creux, pour rotatives
DE3401760A1 (de) * 1984-01-19 1985-08-01 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum spannen von druckplatten
US4577560A (en) * 1984-08-20 1986-03-25 R. R. Donnelley & Sons Company Gapless lock-up for offset printing cylinders

Also Published As

Publication number Publication date
DE3778753D1 (de) 1992-06-11
ES2030675T3 (es) 1992-11-16
US4809607A (en) 1989-03-07
JPS62271743A (ja) 1987-11-26
ATE75666T1 (de) 1992-05-15
EP0246499A3 (en) 1989-10-11
EP0246499A2 (fr) 1987-11-25
DE3616425A1 (de) 1987-11-19

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