EP0686504A2 - Dispositif de fixation et de tension de plaques d'impression avec des extrémités en forme de Z - Google Patents

Dispositif de fixation et de tension de plaques d'impression avec des extrémités en forme de Z Download PDF

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Publication number
EP0686504A2
EP0686504A2 EP95108794A EP95108794A EP0686504A2 EP 0686504 A2 EP0686504 A2 EP 0686504A2 EP 95108794 A EP95108794 A EP 95108794A EP 95108794 A EP95108794 A EP 95108794A EP 0686504 A2 EP0686504 A2 EP 0686504A2
Authority
EP
European Patent Office
Prior art keywords
edges
cylinder
gravure
printing plate
bar
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
EP95108794A
Other languages
German (de)
English (en)
Other versions
EP0686504A3 (fr
EP0686504B1 (fr
Inventor
Claus Dieter Barrois
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0686504A2 publication Critical patent/EP0686504A2/fr
Publication of EP0686504A3 publication Critical patent/EP0686504A3/fr
Application granted granted Critical
Publication of EP0686504B1 publication Critical patent/EP0686504B1/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
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends
    • 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 fastening and tensioning printing plates with "Z" -shaped ends according to the preamble of claim 1.
  • EP 01 24 008 A2 describes a forme cylinder with a device for clamping flexible printing plates with clamping means for folded ends of a printing plate. These clamping devices are arranged in a pit and designed as a triangular segment body with a hanging edge, the outer surface of which covers the pit gap in the tensioned state of the plate and corresponds to the contour of the forme cylinder.
  • a pressure plate lock is known with which "Z" -shaped pressure plates are attached and tensioned.
  • clamping jaws press against bent limbs of the pressure plate, a cavity being formed on the cylinder periphery between the pressure plate and the clamping jaws.
  • Both devices lead to an impermissible enlargement of the area in which shape deviations of the plate from the cylinder contour can occur, i. H. the plate lies hollow on the gravure cylinder.
  • Rigid metal printing plates in which the shape deviations occur particularly strongly, are used in particular in gravure printing processes.
  • the invention has for its object to provide a device for fastening and tensioning printing plates, in particular gravure printing plates, with "Z" -shaped ends and to adapt the shape of the printing plate in the area of the printing plate ends exactly to the cylinder contour.
  • the advantages that can be achieved with the invention consist in particular in that with the device according to the invention, shape deviations of a printing plate from a forme cylinder contour in the region of the hanging edges, ie. H. hollow of the pressure plate ends can be minimized.
  • the device according to the invention avoids ink splashing in the rotogravure printing process, which is caused by the doctor's non-uniform contact with the rotogravure plate.
  • wear on the sealing compound that closes the pit gap and on the squeegee is significantly reduced. The sealant is automatically removed when the hanging edges are opened.
  • the device according to the invention is shown in the drawing and is described in more detail below.
  • a gravure forme cylinder 1 shown in Fig. 1 has a left 2 and right 3 pivotable, acute-angled hooking edge, the respective outer surface 5 is adapted to a curvature of a forme cylinder contour and thus continuously, in the tensioned state, the forme cylinder contour continuously.
  • These pivoting hanging edges 2, 3 run parallel to the cylinder axis and delimit a cylinder pit 7 to the side.
  • a bent end 4, 6 of a gravure printing plate 8 hung.
  • An opening angle alpha of the ends 4, 6 can be 45 °, but preferably less than 45 °, e.g. B. 35 °.
  • Legs 14, 16 each continue on the first legs 9, 11 and each form a second bevel 17, 18 with an opening angle Beta with the first legs 9, 11.
  • This opening angle beta can also be 45 °, but preferably less than 45 °, e.g. B. 35 °.
  • This second fold 17, 18 is directed towards the opposite end 6, 4 of the gravure plate 8.
  • the two ends 4, 6 and the two bevels 17, 18 have approximately the shape of a "Z".
  • An approximately trapezoidal cross section of the strip 21 is formed by a right and left side surface 22, 23 and a base surface 24.
  • the side surfaces 22, 23 enclose with the base surface 24 of the strip 21 an angle gamma which is approximately 0.5 ° to 5 ° smaller than the opening angle Beta, which the legs 9, 11 with the legs 14, 16 of the folded Form ends 4, 6 of gravure plate 8.
  • the side surfaces 22, 23 and the base surface 24 create corner edges 26, 27.
  • a distance a1 between the corner edges 26, 27 is the same or slightly longer than a distance a2 between the folds 17, 18 of the suspended gravure printing plate 8 when the hanging edges 2, 3 are closed.
  • the base surface 24 runs parallel to the base 19 of the cylinder pit 7 and in the closed state of the hanging edges 2, 3 the legs 14, 16 of the gravure printing plate 8 run parallel to the base surface 24.
  • rectangular guide pieces 31, 32 are fastened, which run in grooves 33, 34.
  • the groove 33 or 34 in the base 19 of the cylinder pit 7 is wider than the cuboid guide piece 31 or 32, so that the bar 21 in the direction of the hanging edges 2, 3, d. H. is movable in the direction of the fold 17, 18.
  • the guide pieces 31, 32 allow the bar 21 to move radially (FIG. 2).
  • This radial movement is limited, for example, by a cylinder-fixed bolt 36 which engages in an elongated hole 37 with the length of the path of the strip 21 in the radial direction.
  • Compression springs 38 which are supported in the base 19 of the cylinder pit 7 and on the base 24 of the strip 21, are arranged between the guide pieces 31, 32 (FIGS. 1 and 2).
  • the gravure plate is tensioned as follows:
  • the hanging edges 2, 3 are pivoted with the hooked-in, bent ends 4, 6 of the rotogravure plate 8 in the direction of the cylinder pit 7.
  • the legs 9, 11 of the folded ends 4, 6 of the gravure printing plate 8 are pressed against the side surfaces 22, 23 of the trapezoidal bar 21, whereby the bar 21 is moved against the compression springs 38 in the direction of the base 19 of the cylinder pit 7.
  • the legs 14, 16 of the intaglio printing plate 8 are guided under the base 24 of the trapezoidal bar 21 during this movement (FIGS. 3 and 4).
  • the intaglio printing plate 8 Shortly before the end of the pivoting movement of the hanging edges 2, 3 - ie before reaching the end position of the hanging edges 2, 3 - the bevels 17, 18 encompass the corner edges 26, 27 of the trapezoidal strip 21 near the pit Hook-in edges 2, 3 with the hooked-in, folded ends 4, 6 of the intaglio printing plate 8, these ends 4, 6 are pulled exactly onto the hook-in edges 2, 3.
  • the intaglio printing plate 8 also adapts exactly to the cylinder contour in the region of the hanging edges 2, 3 (FIG. 5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP95108794A 1994-06-10 1995-06-08 Dispositif de fixation et de tension de plaques d'impression avec des extrémités en forme de Z Expired - Lifetime EP0686504B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4420314 1994-06-10
DE4420314A DE4420314C2 (de) 1994-06-10 1994-06-10 Vorrichtung zum Befestigen und Spannen von Druckplatten mit "Z"-förmig abgekanteten Enden

Publications (3)

Publication Number Publication Date
EP0686504A2 true EP0686504A2 (fr) 1995-12-13
EP0686504A3 EP0686504A3 (fr) 1996-12-18
EP0686504B1 EP0686504B1 (fr) 1998-10-28

Family

ID=6520278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108794A Expired - Lifetime EP0686504B1 (fr) 1994-06-10 1995-06-08 Dispositif de fixation et de tension de plaques d'impression avec des extrémités en forme de Z

Country Status (4)

Country Link
US (1) US5566615A (fr)
EP (1) EP0686504B1 (fr)
JP (1) JP2736238B2 (fr)
DE (2) DE4420314C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566269A1 (fr) * 2004-02-23 2005-08-24 MAN Roland Druckmaschinen AG Cylindre pour l'impression avec un vide pour tendre
WO2006136047A3 (fr) * 2005-06-23 2007-03-15 Wifag Maschf Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19537420C1 (de) * 1995-10-07 1997-03-13 Koenig & Bauer Albert Ag Vorrichtung zum Befestigen und Spannen von Druckplatten mit abgekanteten Enden
EP1591249A1 (fr) * 2004-04-27 2005-11-02 Müller Martini Holding AG Appareil pour fixer une plaque d'impression sur un cylindre d'impression dans une machine d'impression rotative
CN100417521C (zh) * 2005-02-23 2008-09-10 吴广顺 单张纸凹印机版滚筒的制造方法
CN111469545B (zh) * 2020-05-29 2024-02-09 湖北科技学院 一种印刷辊与印刷版的安装结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121073B (de) 1955-03-02 1962-01-04 Fred K H Levey Company Inc Druckplattenschloss
EP0124008A2 (fr) 1983-04-28 1984-11-07 BASF Aktiengesellschaft Dispositif de tension de plaques d'impression

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927728A (en) * 1929-07-01 1933-09-19 Wolff Fritz Form cylinder for offset-printing machines
US1966311A (en) * 1931-06-11 1934-07-10 Pearson Surface decorating mechanism
US2745344A (en) * 1955-03-02 1956-05-15 Levey Fred K H Co Inc Flexible sheet securing device for printing rollers
DE2633445A1 (de) * 1976-07-24 1978-01-26 Frankenthal Ag Albert Formzylinder zum aufspannen von wickelplatten fuer das tiefdruckverfahren
US4250810A (en) * 1979-09-25 1981-02-17 International Business Machines Corporation Centrifugal clamp on a high speed print drum
DE3540581A1 (de) * 1985-11-15 1987-05-21 Roland Man Druckmasch Druckwerkzylinder mit einem in dessen zylindergrube angeordneten fuellstueck
US4833986A (en) * 1987-03-05 1989-05-30 M.A.N. Roland Druckmaschinen Ag Holding and tensioning system for a cover layer on a printing machine cylinder
DE3731779A1 (de) * 1987-09-22 1989-03-30 Koenig & Bauer Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf formzylinder von rotationsdruckmaschinen
DE3738568A1 (de) * 1987-11-13 1989-05-24 Basf Ag Vorrichtung zum spannen von druckplatten
DE3928640A1 (de) * 1989-08-30 1991-03-14 Roland Man Druckmasch Gummituchzylinder fuer bogenrotations-offsetdruckmaschinen
DE9017787U1 (de) * 1990-12-06 1992-01-02 Koenig & Bauer AG, 8700 Würzburg Axial verstellbarer Registerstift
DE4244077C2 (de) * 1992-12-24 1995-06-08 Koenig & Bauer Ag Vorrichtung zum Aufspannen von biegsamen Druckplatten auf einen Formzylinder einer Rotationsdruckmaschine
DE9410423U1 (de) * 1993-05-25 1994-09-08 Koenig & Bauer AG, 97080 Würzburg Druckplatte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121073B (de) 1955-03-02 1962-01-04 Fred K H Levey Company Inc Druckplattenschloss
EP0124008A2 (fr) 1983-04-28 1984-11-07 BASF Aktiengesellschaft Dispositif de tension de plaques d'impression

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566269A1 (fr) * 2004-02-23 2005-08-24 MAN Roland Druckmaschinen AG Cylindre pour l'impression avec un vide pour tendre
US7134394B2 (en) 2004-02-23 2006-11-14 Man Roland Druckmaschinen Ag Printing cylinder with clamping channel and rotatable spindle clamping mechanism
CN1660570B (zh) * 2004-02-23 2011-06-15 曼罗兰公司 有一个张紧通道的印刷装置滚筒
WO2006136047A3 (fr) * 2005-06-23 2007-03-15 Wifag Maschf Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage

Also Published As

Publication number Publication date
EP0686504A3 (fr) 1996-12-18
DE4420314A1 (de) 1995-12-14
JP2736238B2 (ja) 1998-04-02
EP0686504B1 (fr) 1998-10-28
DE4420314C2 (de) 1999-02-04
US5566615A (en) 1996-10-22
JPH0839781A (ja) 1996-02-13
DE59504036D1 (de) 1998-12-03

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