EP0246499A2 - Dispositif de serrage pour plaques d'impression - Google Patents

Dispositif de serrage pour plaques d'impression Download PDF

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Publication number
EP0246499A2
EP0246499A2 EP87106592A EP87106592A EP0246499A2 EP 0246499 A2 EP0246499 A2 EP 0246499A2 EP 87106592 A EP87106592 A EP 87106592A EP 87106592 A EP87106592 A EP 87106592A EP 0246499 A2 EP0246499 A2 EP 0246499A2
Authority
EP
European Patent Office
Prior art keywords
clamping
cylinder
pressure
strip
tensioning
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
EP87106592A
Other languages
German (de)
English (en)
Other versions
EP0246499A3 (en
EP0246499B1 (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 acting on the plate to be clamped is limited, and an insertable, elastic strip is inserted between the pressure surfaces of the clamping strips and a squeezing strip radially adjustable towards the circumference of the cylinder.
  • a device of this type is known from DE-OS 3 401 760.
  • This - known device consists of two clamping bars arranged in a cylinder recess, L-shaped in cross section, which can be moved in opposite directions towards and away from each other.
  • 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 bars engage in a respectively assigned, cylinder-side guide groove, which are delimited 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, which are gripped under by the lying legs of the clamping bars, which prevents tipping 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 tension bars have compared to the one so much movement play that the plate to be tensioned can be attached to the respectively assigned beak edges with its claws bent at an acute angle.
  • each one is assigned a clamping spindle supported on the cylinder side, which engages radially on the back 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 there is no deflection.
  • 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 to 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 turning, 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.
  • clamping bar is adjustable in the clamping direction of the pressure plates by means of at least two hydraulic cylinders supported on their rear side and the adjacent cylinder-fixed wall. The same applies to the adjustability of the clamping bar against the clamping direction of the pressure plate.
  • an advantageous embodiment of the invention is that the insertable, elastic bar, as a plastic tube or hose - filled with gap sealing compound - is designed 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 your. Operation essentially of 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 beaked edges with clamping surfaces 3 which are angled at an acute angle to the circumferential contour and which delimit an outwardly converging clamping channel 4.
  • 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.
  • the plastic tube 7, which is arranged in the clamping channel 4 and is filled with gap sealing compound is deformed on the one hand by the clamping strips 2 and, on the other hand, by the squeezing strip 6 in such a way that the gap sealing compound passes through the openings of the plastic tube against the outer contour of the cylinder is pressed.
  • Above the outer contour in the gap area is 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)
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
DE3616425 1986-05-15
DE19863616425 DE3616425A1 (de) 1986-05-15 1986-05-15 Vorrichtung zum spannen von druckplatten

Publications (3)

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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381624A1 (fr) * 1977-02-28 1978-09-22 Daetwyler & Co M Cylindre porte-cliches pour rotatives d'heliogravure, pourvu de plaques flexibles
EP0118866A2 (fr) * 1983-03-12 1984-09-19 BASF Aktiengesellschaft Procédé et dispositif d'obturation de la fente entre les extrémités d'un cliché d'impression en creux fixé sur un cylindre de plaque
EP0132864A1 (fr) * 1983-07-26 1985-02-13 De La Rue Giori S.A. Dispositif de fixation et d'ajustage d'une plaque d'impression sur un cylindre porte-plaques
EP0142874A1 (fr) * 1983-11-14 1985-05-29 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

Family Cites Families (3)

* 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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381624A1 (fr) * 1977-02-28 1978-09-22 Daetwyler & Co M Cylindre porte-cliches pour rotatives d'heliogravure, pourvu de plaques flexibles
EP0118866A2 (fr) * 1983-03-12 1984-09-19 BASF Aktiengesellschaft Procédé et dispositif d'obturation de la fente entre les extrémités d'un cliché d'impression en creux fixé sur un cylindre de plaque
EP0132864A1 (fr) * 1983-07-26 1985-02-13 De La Rue Giori S.A. Dispositif de fixation et d'ajustage d'une plaque d'impression sur un cylindre porte-plaques
EP0142874A1 (fr) * 1983-11-14 1985-05-29 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
US4809607A (en) 1989-03-07
EP0246499A3 (en) 1989-10-11
ATE75666T1 (de) 1992-05-15
DE3616425A1 (de) 1987-11-19
EP0246499B1 (fr) 1992-05-06
DE3778753D1 (de) 1992-06-11
ES2030675T3 (es) 1992-11-16
JPS62271743A (ja) 1987-11-26

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