EP0557729B1 - Dispositif pour fixer un cliché sur un cylindre porte-plaque - Google Patents

Dispositif pour fixer un cliché sur un cylindre porte-plaque Download PDF

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Publication number
EP0557729B1
EP0557729B1 EP93101262A EP93101262A EP0557729B1 EP 0557729 B1 EP0557729 B1 EP 0557729B1 EP 93101262 A EP93101262 A EP 93101262A EP 93101262 A EP93101262 A EP 93101262A EP 0557729 B1 EP0557729 B1 EP 0557729B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
plate
printing plate
printing
pressure plate
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
EP93101262A
Other languages
German (de)
English (en)
Other versions
EP0557729A1 (fr
Inventor
Claus Simeth
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 EP0557729A1 publication Critical patent/EP0557729A1/fr
Application granted granted Critical
Publication of EP0557729B1 publication Critical patent/EP0557729B1/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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means

Definitions

  • the invention relates to a device for clamping a flexible printing plate on a plate cylinder of a rotary printing press with a front clamping bar provided at the start of printing, which is adjustable at least in the circumferential direction of the cylinder and preferably also in the axial direction thereof, which can be detachably connected to the front edge of the printing plate and which is adjustably fastened in a cylinder pit which extends in the axial direction of the plate cylinder and is accessible from the outside, further with means also arranged in the cylinder pit, which can be detachably connected to the rear edge of the pressure plate, and with a tensioning device with spring means which hold the pressure plate clamps on the cylinder surface.
  • the prior art has the disadvantage that when a register correction is carried out, the register error is only remedied locally, while it still exists at other points on the printing plate, because the printing plate has not shifted completely in conformity with the register correction.
  • the known constructions take up a lot of space and also have a high weight, in particular due to the two tensioning strips. This weight is reflected in the imbalance in the operation of the machine, which in turn must be compensated for with suitable means.
  • the invention avoids these disadvantages. It is based on the task of a device for clamping a flexible To propose a printing plate on a plate cylinder of a rotary printing press, with which register corrections can be carried out noticeably easier and with less problems than is the case with the prior art. Distortions or even damage to the printing plate or the printing plate image should be excluded.
  • the invention is characterized in that a plurality of spring elements are attached in the cylinder pit spaced apart in the axial direction, which are releasably attachable to the rear edge of the pressure plate and spring in the circumferential direction and in the axial direction of the cylinder.
  • the front tensioning bar can be adjusted accordingly, at least in the circumferential direction and preferably also in the axial direction or also in directions which thus enclose an angle, in short in the plane of the plate cylinder on it Start of printing. It should be mentioned that the adjustment on the front clamping bar in the circumferential direction also serves to clamp the pressure plate.
  • a tensioning bar with a corresponding adjustment possibility is disclosed, for example, in the already mentioned EP 0 426 022, there in particular FIGS. 6 to 8 with the associated description.
  • the spring elements There are numerous options for the design of the spring elements.
  • a preferred possibility is to design the spring elements as pins which engage in corresponding holes on the rear edge of the pressure plate. This is particularly preferred because such pins in the required directions - in the plane of the rear end of the pressure plate - can be designed to be elastically resilient in a structurally simple manner and also the attachment of the pins to the pressure plate via the holes mentioned is structurally simple.
  • the spring elements can, for example, also be clamped to the rear end of the pressure plate or be releasably attached in some other way.
  • the attachment here is particularly simple if the pins have rear receptacles for the printing plate at their upper end.
  • the pressure plate only has to be brought over the pins in a relaxed state in such a way that the pins pass through the holes and the pressure plate is then locked onto the pins by the pressure plate snapping into the receptacles of the pins.
  • the required elasticity of the spring elements can be given to them in a structurally simple manner in that the spring elements are designed as pins, the feet of which are embedded in holders made of elastic material.
  • the elastic material is, for example, a plastic of suitable elasticity or a suitable rubber material.
  • Fig. 1 shows a section of the outer circumference of a plate cylinder 1 in a sectional side view, the actually cylindrical surface 2 of the plate cylinder being drawn for the sake of simplicity.
  • a single cylinder pit 3 is formed on the plate cylinder, the left and right ends of which are shown in FIG. 1 for the sake of illustration.
  • the cylinder rotates in the direction of arrow 4.
  • the left end of Fig. 1 is therefore the start of printing.
  • a pressure plate 5 is clamped on the surface of the cylinder. (For reasons of better illustration, a distance between the pressure plate 5 and the cylinder surface 2 is shown in FIG. 1.)
  • the front end of the pressure plate 5 is clamped in a front clamping bar 6, which thus defines the start of printing.
  • the clamping bar can be moved in the direction of arrow 7, whereby the pressure plate is tensioned.
  • Corresponding measures, which are described in the aforementioned European patent application by the applicant you can adjust the tension bar not only in the direction of arrow 7 and in the opposite direction, but also in the axial direction of the pit 3 and you can also the tension bar in the plane of Tilt the pressure plate.
  • the rear end of the printing plate is fixed to the printing cylinder in that a plurality of elastically resilient pins 8 are fastened in the cylinder pit and engage with their upper ends in corresponding holes 9 at the rear end of the printing plate 5.
  • FIG. 3 shows that the pins have receptacles 10 at their rear ends, into which the rear edges of the holes 9 of the pressure plate 5 are inserted.
  • Fig. 3 also shows that the foot of the pin 8 is cast into a holder 11 made of a suitable rubber-elastic material, so that the pin is movable in the manner of a ball joint, but with limited deflection, with its fastening end with the receptacle 10 all points one Can sweep the circular section surface. This is indicated in Fig. 2 by the arrows 12 perpendicular to each other.
  • Fig. 3 also shows that the holder 11 is attached to a foot 13 which is screwed to the wall 15 of the pit 3 by means of a screw 14.
  • a single foot can also be provided for all pins 8.
  • the device described works as follows. First, the front end of the pressure plate 5 is clamped to the front and single clamping bar 6. Then you put the pressure plate 5 around the cylinder surface 2 and fastened its rear end in that the elastic pins 8 pass through the holes 9 of the pressure plate and are fastened there, as shown in FIG. 3. Then the clamping bar 6 is adjusted, if necessary, until the pressure plate is clamped in the register.
  • the register can be corrected again by adjusting the tension bar 6 accordingly.
  • the distance between the pins 8 should be a few centimeters, for example about 3 to 5 cm, in such a way that their elastic force affects practically the entire rear surface of the pressure plate 5.
  • the holes 9 are larger than the cross sections of the pins 8 so that the pins can be easily threaded into the holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (4)

  1. Dispositif pour tendre une plaque d'impression flexible (5) sur un cylindre porte-plaque (1) d'une machine d'impression rotative, comportant une tige tendeuse avant (6) prévue au début d'impression, susceptible d'être réglée au moins en direction périphérique (flèche 7) du cylindre et de préférence également dans sa direction axiale, susceptible d'être reliée de façon amovible au bord avant de la plaque d'impression (5) et fixée de façon réglable dans un canal de cylindre (3) s'étendant en direction axiale du cylindre porte-plaque et accessible de l'extérieur, en outre des moyens (8) également agencés dans le canal de cylindre (3) et susceptibles d'être reliés de façon amovible au bord arrière de la plaque d'impression (5), et un dispositif tendeur comportant des moyens élastiques qui tend la plaque d'impression (5) sur la surface (2) du cylindre, caractérisé en ce que dans le canal de cylindre (3), plusieurs éléments élastiques (8) sont fixés, en étant écartés les uns des autres en direction axiale, éléments élastiques qui peuvent être fixés de façon amovible sur le bord arrière de la plaque d'impression (5) et qui sont élastiques en direction périphérique et en direction axiale (flèche 12) du cylindre (1).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que les éléments élastiques sont réalisés sous forme de broches (8) qui agissent dans des trous correspondants (9) sur le bord arrière de la plaque d'impression (5).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que les broches (8) comportent à leurs extrémités supérieures des logements (10) à l'arrière pour la plaque d'impression (5).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les éléments élastiques (8) sont réalisés sous forme de broches, dont les bases sont insérées dans des éléments de maintien (11) en un matériau élastique.
EP93101262A 1992-02-21 1993-01-28 Dispositif pour fixer un cliché sur un cylindre porte-plaque Expired - Lifetime EP0557729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4205276 1992-02-21
DE4205276A DE4205276A1 (de) 1992-02-21 1992-02-21 Vorrichtung zum aufspannen einer druckplatte auf einen plattenzylinder

Publications (2)

Publication Number Publication Date
EP0557729A1 EP0557729A1 (fr) 1993-09-01
EP0557729B1 true EP0557729B1 (fr) 1995-06-28

Family

ID=6452241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101262A Expired - Lifetime EP0557729B1 (fr) 1992-02-21 1993-01-28 Dispositif pour fixer un cliché sur un cylindre porte-plaque

Country Status (5)

Country Link
US (1) US5361698A (fr)
EP (1) EP0557729B1 (fr)
JP (1) JPH0790634B2 (fr)
AT (1) ATE124328T1 (fr)
DE (2) DE4205276A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210897C1 (fr) * 1992-04-02 1993-08-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
JPH0720757U (ja) * 1993-09-06 1995-04-11 大日本スクリーン製造株式会社 ドラム型走査装置用シート保持装置
DE19610820C2 (de) * 1996-03-19 2002-10-24 Mitsubishi Paper Mills Ltd Befestigungsvorrichtung für eine Druckplatte
DE19707063C1 (de) * 1997-02-22 1998-07-30 Roland Man Druckmasch Verfahren zur Durchführung von Seitenregisterkorrekturen sowie entsprechende Vorrichtung
DE10303178A1 (de) * 2003-01-28 2004-07-29 Heidelberger Druckmaschinen Ag Stanz- und Rill-Gegendruckplatte und Verfahren zu deren Herstellung und Gebrauch sowie damit ausgestattete Maschine
JP4612899B2 (ja) * 2006-02-17 2011-01-12 キヤノン株式会社 シート搬送ローラ、シート搬送装置、及び画像形成装置
US20080028964A1 (en) * 2006-08-04 2008-02-07 Mceachern David A Mounting image carrying plate onto a cylinder
WO2017207006A1 (fr) * 2016-05-31 2017-12-07 Glunz & Jensen Système de broche pour le montage et le démontage faciles de plaques d'impression

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL57261C (fr) *
DE7216860U (de) * 1972-08-03 Koenig & Bauer Ag Spannvorrichtung für biegsame Druckplatten
DE426022C (de) * 1925-03-01 1926-03-04 Bruno Adler Vorrichtung zum Einbrennen von Firmen- und sonstigen Angaben in Holz und anderes Material
US3025790A (en) * 1956-04-30 1962-03-20 Larsen Carl Ejner Planographic printing method and apparatus
US3151554A (en) * 1961-09-21 1964-10-06 Fairchild Camera Instr Co Perforated sheet supporting arrangement
US3188952A (en) * 1962-05-08 1965-06-15 Addressograph Multigraph Holding and adjusting means for printing members
BE733564A (fr) * 1968-06-24 1969-11-03
US4006686A (en) * 1975-09-18 1977-02-08 Ackerman Stephen P Blanket fastening means for a cylinder blanket
SE393330B (sv) * 1975-10-03 1977-05-09 Wifag Maschf Anordning for uppspenning av bojliga tryckplattor pa en sadelplatta
DE2755885A1 (de) * 1977-12-15 1979-06-21 Koenig & Bauer Ag Vorrichtung zum befestigen biegsamer druckplatten auf dem formzylinder einer rollenrotationsdruckmaschine
DE3604209A1 (de) * 1986-02-11 1987-08-13 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
DE3606351A1 (de) * 1986-02-27 1987-09-03 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
IT1199685B (it) * 1986-12-03 1988-12-30 Ligure Tubettificio Mantello cilindrico porta-cliche'per macchine da stampa litografiche a mantelli estraibili,particolarmente per la stampa su corpi cilindrici e simili
DE3933678A1 (de) * 1989-10-09 1991-04-18 Miller Johannisberg Druckmasch Vorrichtung zum positionsgenauen spannen einer druckplatte auf einem druckzylinder
DE3936446A1 (de) * 1989-11-02 1991-05-08 Miller Johannisberg Druckmasch Plattenzylinder einer druckmaschine
US5088408A (en) * 1991-02-28 1992-02-18 Matthews International Inc. Printing plate mounting system and a printing plate composite utilizing such system

Also Published As

Publication number Publication date
US5361698A (en) 1994-11-08
JPH068401A (ja) 1994-01-18
JPH0790634B2 (ja) 1995-10-04
DE4205276A1 (de) 1993-08-26
EP0557729A1 (fr) 1993-09-01
DE59300294D1 (de) 1995-08-03
ATE124328T1 (de) 1995-07-15

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