EP1786625A1 - Dispositif de fixation de planche d'impression - Google Patents

Dispositif de fixation de planche d'impression

Info

Publication number
EP1786625A1
EP1786625A1 EP05754331A EP05754331A EP1786625A1 EP 1786625 A1 EP1786625 A1 EP 1786625A1 EP 05754331 A EP05754331 A EP 05754331A EP 05754331 A EP05754331 A EP 05754331A EP 1786625 A1 EP1786625 A1 EP 1786625A1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping piece
piece
cylinder
printing
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.)
Withdrawn
Application number
EP05754331A
Other languages
German (de)
English (en)
Inventor
Andreas Zahnd
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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 Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1786625A1 publication Critical patent/EP1786625A1/fr
Withdrawn legal-status Critical Current

Links

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 Druckplattenanbringungsvo ⁇ ichtung and in particular a device with which preferably fully automatic printing plates in a printing cylinder of a rotary printing machine can be switched on and off, with a pressure plate can be clamped to the Dmckzylinder or clamped.
  • a suction device for handling printing forms is known, for example, from USP 5,806,431.
  • the suction device comprises, along an axis, a plurality of suction cups and rollers arranged therebetween.
  • the suckers are pressed against the printing form so that each of the suckers forms a dense suction chamber with the printing form.
  • the suction chambers are supplied with suction air, i. evacuated, whereby the suction force required to support the printing form is generated.
  • DE 10 2004 023 434.5 of the applicant discloses a suction device for a printing plate of a printing machine or another replaceable lining of a lining carrier which is used for ink transfer, the teaching of DE 10 2004 023 434.5 relating to the attachment of a nipple a rotary machine ,.
  • a suction device for holding a printing form of a printing machine and the method described there for changing a printing form of a printing form carrier of a printing press by means of a suction device is included in this application.
  • US 4,727,807 discloses an apparatus for automatically attaching and detaching printing plates of a rotary printing press, which can be used in conjunction with the present invention.
  • Clamping or clamping devices are used for clamping one or more printing plates or printing plates or other cylinder lining, for example a blanket on a cylinder of a rotary printing press.
  • the relevant cylinder is provided with at least one axially extending on the cylinder surface clamping channel in which the clamping device is arranged.
  • a clamping or clamping device, as the invention relates to it, is needed in particular for blanket cylinder and / or forme cylinder of rotary printing presses to a blanket or a flexible printing form, which are stretched on a lateral surface of a cylinder on the cylinder while Auf ⁇ the voltage to fix.
  • a clamping device for clamping a flexible covering of a cylinder of a printing press is known from DE 102 44 944 A1 of the applicant.
  • the clamping device according to the invention can be used in a clamping channel of a printing cylinder, so for example inserted from a lateral opening along the longitudinal axis of the printing cylinder or set ein ⁇ in a recess of the printing cylinder and fixed, for example, with a filler, which the Spanneinrich ⁇ direction covers outside so that preferably only the smallest possible clamping channel for Ein ⁇ push ends of a fabric, such as printing plate ends is open and the tensioning device according to the invention is arranged below the opening slot of the tensioning channel in the tensioning channel in order to securely clamp or clamp the ends.
  • a tensioning device has a tensioning piece and a clamping piece, which can preferably be displaced relative to one another, wherein in a clamping channel of a. Cylinder inserted state one end of a string, such as the leading end of a pressure plate, between, for example, an inner or In ⁇ nen decoration the clamping channel or a fixedly connected to the cylinder element and the clamping piece can be clamped or held, while a second End of a string, such as a trailing end of the same or another pressure plate between the clamping piece and the clamping piece is clamped or held.
  • a string such as the leading end of a pressure plate
  • At least one contact surface of the clamping piece and / or the Klemm ⁇ piece is formed so that when the clamping piece rests on one side, for example, on an inner surface of the clamping channel or at a lying on this inner side of the clamping channel end of a pressure plate, there is a line contact, that is, the clamping piece is substantially non-planar, but has only a narrow contact strip and ideally only a line-shaped contact area, which runs for example approximately parallel to the longitudinal axis of a printing cylinder, whereby a simpler insertion and Ausschie ⁇ ben a plate end is possible ,
  • the contact area between the clamping piece and the clamping piece may be formed so that only a linear contact between the Klemm ⁇ piece and the clamping piece consists.
  • a surface of the clamping and / or clamping piece be formed so that an edge protrudes, which is used for clamping a plate end.
  • a surface of the clamping piece and / or the clamping piece used to hold an inserted printing plate end may also be formed as a convex or outwardly curved or curved surface, whereby a linear contact on, for example, a flat or planar plane or for example also as an edge or convex formed counter surface such that between this linear contact area plate ends can be easily inserted and ejected and yet securely held by traction or clamping, the contact pressure in comparison to a known from the prior Tech ⁇ area clamping piece due to the reduction of the contact surface er ⁇ is increased.
  • the clamping piece and the clamping piece are preferably displaceable relative to each other, where, for example, part of the clamping piece in the clamping piece and / or part of the clamping piece can be guided in the clamping piece.
  • a guide element for example in the form of a projecting from the clamping rod rod and screwed, for example, which can be inserted into a recess, opening or a guide portion, which may be formed, for example, as a groove of the clamping piece, so that Clamping piece can only be moved in a predetermined by the guide element and the associated guide of the clamping piece direction.
  • a guide element may also be provided on the clamping piece, which is guided by a corresponding guide of the clamping piece. It is also possible that a guide element of the clamping or the clamping piece is guided only in part by, for example, a groove of the other piece, wherein for Bei ⁇ play an inner surface of the clamping channel on which the guide element may rest, for further guidance of the guide element and thus the clamping or clamping piece is used.
  • a used for clamping a plate end surface of the clamping piece and / or the clamping piece advantageously has at least one interruption, for example in the form of a recess or recess, which, for example, linearly trained th contact area of the clamping piece or clamping piece to a counter surface in two or can divide more separate contact areas so that tension when clamping a plate end can be reduced and broken down more easily, for example, by the recess provided in the contact area interruption, since due to the divided into two or more contact lines or contact areas, the movement ability of the clamping piece or the Sparm publishedes is increased relative to a Platten ⁇ nende and, for example, a tension caused by an inclination of two aneinan der structura elements voltage can be solved more easily, since only a smaller contact area is present, which ckes due to the higher Aufpressdru ⁇ still secure clamping or Holding a plate end allows.
  • a recess or recess which, for example, linearly trained th contact area of the clamping piece or clamping
  • the clamping piece and / or the clamping piece is essentially not deformable, ie it is designed as a non-elastic and preferably rigid or rigid element, for example made of a substantially non-elastic material, such as metal, so that an approximately linear contact area, which, for example, in the state inserted in a printing form cylinder extends approximately parallel to the longitudinal axis of the cylinder, can also be realized under pressure without resulting in a flat contact area.
  • the clamping piece, the clamping piece or the clamping and the clamping piece have at least one partial region, which is formed of ei ⁇ nem elastic material, such as rubber.
  • a clamping element such as a spring or an elastic element, is provided, with which a pressure between the clamping piece and the Klemm ⁇ piece for clamping a plate end and / or pressure between the clamping piece and a mating surface, for example a Inner surface of the clamping channel, can be generated for clamping a further plate end regardless of the terminals of the first plate end.
  • a spring may be provided, which is supported against an inner side of a clamping channel and presses the clamping piece from this inner side of the clamping channel in the direction of the clamping piece, so that this spring between the Klemm ⁇ piece and the clamping piece, and between the Clamping piece and another piece or the inside of the clamping channel generates a pressure, whereby, for example, two plate ends, which are used for example on two opposite sides of the clamping piece, can be clamped by the pressure generated by the clamping element nen, wherein upon insertion of one or two plate ends, the clamping piece and the clamping piece, for example, away from and together to be moved to the clamping element, that the clamping element generates a counterforce which is sufficiently large to hold the inserted plate ends.
  • the clamping device according to the invention on a filler, which is used for example on the inserted into a pressure cylinder clamping device in a recess or recess des- pressure cylinder to provide above the clamping device only a possible small channel for insertion of the plate ends, the clamping piece preferably almost completely covered by the filler.
  • the invention relates to a printing form cylinder, for example for a rotary printing press, in which at least one as described above be ⁇ spam means can be used or has been used. It is advantageous to provide at least two clamping devices according to the invention consisting of at least one clamping piece and at least one clamping piece in order to hold one end or a portion of one end of a printing plate. In this case, for example, a right-hand end of the plate arranged to the right of a register opening of the printing plate is held or clamped by a second clamping device by a first clamping device and a left-hand plate end arranged to the left of a register opening of the printing plate.
  • the invention relates to the combination of a printing cylinder as described above with a known as for example from US 4,727,807 robot for automatically attaching and / or detaching a printing plate.
  • the invention relates to a method for producing a printing forme cylinder with a clamping device as described above, wherein a Recess is provided in the pressure cylinder, in which a clamping element is used, which is supported against the cylinder or an element adjacent to the cylinder, such as a filler, a clamping piece and a clamping piece are used so that they are movably mounted and one or two linear contact areas bil ⁇ , in which against the force of the clamping element separated from each other two plate ends can be used.
  • FIG. 1 shows a clamping device used in a printing form cylinder
  • Figure 2 is a plan view of a printing form cylinder together with a deliberately strong lowing pressure plate
  • Figure 3 is an enlarged view of the clamping device shown in Figure 1;
  • Figure 4 is a detail view of an embodiment of a clamping piece
  • Figure 5 is a schematic representation of the operation of the shown in Figure 1
  • Figures 1 and 3 show a printing cylinder 4, which has a cutout 4a, in which a filler 7, which carries a clamping device consisting of a clamping piece 1, ei ⁇ nem clamping piece 2 and serving as a clamping element spring 6, used and by means of a screw 8 is fixed to the cylinder 4.
  • a filler 7 which carries a clamping device consisting of a clamping piece 1, ei ⁇ nem clamping piece 2 and serving as a clamping element spring 6, used and by means of a screw 8 is fixed to the cylinder 4.
  • a filler 7 which carries a clamping device consisting of a clamping piece 1, ei ⁇ nem clamping piece 2 and serving as a clamping element spring 6, used and by means of a screw 8 is fixed to the cylinder 4.
  • the clamping piece 2 has, on the side facing the clamping slot 3a, a separating element 2b designed as an edge, for example, and an inclined surface 2f shown on the left in FIG. 1, so that the end 5a securely engages in the clamping position shown can be performed.
  • the side 2g of the clamping piece 2 opposite the side 2c used to clamp the plate end 5a is formed in the embodiment shown as a plane and substantially non-curved surface and serves to guide a plate end 5b, which is defined by a convex surface 1a of the clamping piece 1 is held or clamped, so that there is a line-shaped contact area due to the outwardly formed slight curvature or convex surface Ia of the clamping piece 1 for holding the plate end 5b.
  • the spring 6 causes by their pressure both a clamping of the plate end 5a, as well as a clamping of the plate end 5b, which do not touch in the inserted and clamping Zu ⁇ and thus can be inserted or pulled independently, without the risk that the other end of the plate is moved.
  • the clamping piece 1 and the clamping piece 2 have on the clamping slot 3a bruise ⁇ ing side approximately flat tops and can be moved along the clamping channel 3, wherein the clamping piece 2 is guided through the ein ⁇ in a recess of the clamping piece 1 ein ⁇ cross guide element 2a , whereby a withdrawal of the Klemm ⁇ piece 2 from the clamping channel 3 is prevented.
  • a pin 9 made of brass (in FIG. 1 only) is provided above the screw 8 provided for fastening the filling piece 7 or the clamping device guided therein shown as a dotted line) is provided, which can be ground together with the clamping device 1, 2, 6 over the cylinder surface after insertion and fastening of the filler 7 in order to obtain a smooth surface.
  • FIG. 2 shows a plan view of a cylinder 4, in which, for example, four printing plates 5, each having a register opening 5c, can be inserted next to each other, wherein it is also possible, for example two, each about twice as wide as a printing plate 5 mounted panoramic panels, which due to the erfmdungs without lateral boundary formed and extending substantially over the ge entire length of the cylinder 4 clamping device consisting of several ein ⁇ individual clamping pieces 1, clamping pieces 2 and springs 6 a large degree of freedom with respect to the width of attachable and securely clamped plates results.
  • two independent clamping pieces 2 are provided for holding one end of a pressure plate, wherein in the area between the clamping devices or between the clamping pieces 2 a register device may be provided, as for example in DE 10 2004 023 008.0 of the applicant, the teaching of which relating to the formation of such a register device is included in this application.
  • Figure 4 shows an enlarged view of a clamping piece 2 with a aus ⁇ from the full aus ⁇ milled or screwed thereto guide element 2a, which on the bottom 2h flat and on the opposite side of the guide member 2a has a ebe ⁇ ne surface 2i, which is approximately perpendicular 2h on the bottom.
  • the edge 2b which acts as a separating element and is provided on the upper side of the clamping piece 2, separates the convexly formed rear side 2c of the clamping piece 2 from the clamping side 2d formed as a flat bevel, which is interrupted by a subdivision 2e set back, for example, by 1 mm becomes.
  • such an interruption 2e may be provided in the convex surface 2c formed on the back 2c of the clamping piece 2.
  • FIG. 5 shows schematically the functional principle of the spam device with a top view of the tensioning device shown in FIG. 1 from the direction of the arrow A.
  • set surfaces Ie and 2e interrupted clamping surfaces Ia and 2d of the clamping piece 1 and the clamping piece 2 are pressed together by acting on the clamping piece 1 force of the spring 6 and can hold the plate end 5b of a pressure plate, due to the tapered design of the clamping piece. 2 during a rotation of the cylinder 4, the clamping piece 2 is pressed radially outwards and so together with the force of the spring 6 secure clamping of the two outer surfaces 2c and 2d of the clamping piece 2 held pressure plate ends 5 a and 5 b is ensured.

Landscapes

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

Abstract

L'invention concerne un dispositif de tension conçu pour un canal de tension (3) d'un corps de cylindre (4), comprenant une pièce de serrage (2) servant à serrer une première extrémité de plaque de recouvrement, en particulier de planche d'impression (5a), et à serrer une deuxième extrémité de plaque de recouvrement, en particulier de planche d'impression (5b), entre la pièce de serrage (2) et une pièce de tension (1). Selon l'invention, au moins une zone de contact de la pièce de serrage (2) et/ou de la pièce de tension (1) qui est destinée à serrer une extrémité de plaque de recouvrement ou de planche d'impression (5a, 5b) est configurée de manière approximativement linéaire.
EP05754331A 2004-09-01 2005-07-06 Dispositif de fixation de planche d'impression Withdrawn EP1786625A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004042342A DE102004042342B4 (de) 2004-09-01 2004-09-01 Spanneinrichtung für einen Spannkanal eines Zylinderkörpers, Druckformzylinder und Verfahren zur Herstellung
PCT/CH2005/000383 WO2006024179A1 (fr) 2004-09-01 2005-07-06 Dispositif de fixation de planche d'impression

Publications (1)

Publication Number Publication Date
EP1786625A1 true EP1786625A1 (fr) 2007-05-23

Family

ID=35058947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05754331A Withdrawn EP1786625A1 (fr) 2004-09-01 2005-07-06 Dispositif de fixation de planche d'impression

Country Status (4)

Country Link
US (1) US20090139419A1 (fr)
EP (1) EP1786625A1 (fr)
DE (1) DE102004042342B4 (fr)
WO (1) WO2006024179A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10250684B3 (de) * 2002-10-31 2004-04-01 Koenig & Bauer Ag Verfahren zur Herstellung eines Rotationskörpers und Rotationskörper einer Druckmaschine
DE102007024426A1 (de) * 2007-05-25 2008-12-04 Maschinenfabrik Wifag Spanneinrichtung für Druckformen
DE102007054935A1 (de) * 2007-11-17 2009-05-20 Manroland Ag Druckmaschinenzylinder
DE102007055282A1 (de) * 2007-11-20 2009-06-04 Wifag Maschinenfabrik Ag Klemmvorrichtung mit schwenkbeweglichem Klemmstück
DE102008042703B4 (de) * 2008-10-09 2011-04-07 Koenig & Bauer Aktiengesellschaft Formzylinder einer Druckmaschine und ein Verfahren zum Aufplatten mindestens einer biegsamen Druckform

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FR1413020A (fr) * 1964-11-04 1965-10-01 Paper Converting Machine Co Cylindre porte-cliché pour appareil d'impression
FR1425565A (fr) * 1964-12-18 1966-01-24 Miehle Goss Dexter Inc Mécanisme de serrage des clichés pour une presse d'imprimerie rotative
DE2523580C3 (de) * 1975-05-28 1978-06-15 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen
DE2634554C2 (de) * 1976-07-31 1982-03-18 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten
DE3110982A1 (de) * 1981-03-20 1982-10-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Plattenzylinder mit einer plattenbefestigungsvorrichtung
DE3116506C2 (de) * 1981-04-25 1984-05-17 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Befestigen einer Druckplatte auf dem Formzylinder einer Rotationsdruckmaschine
DE3338127C1 (de) * 1983-10-20 1985-04-04 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Spannvorrichtung für einen Gummituchzylinder einer Rollenrotationsdruckmaschine
DE3470688D1 (en) * 1983-11-14 1988-06-01 De La Rue Giori Sa Plate cylinder with a device for affixing gravure printing plates for a web-printing machine
US4727807A (en) * 1985-09-30 1988-03-01 Tokyo Kikai Seisakusho Apparatus for automatically mounting and removing printing plates in rotary printing press
DD266233A3 (de) * 1987-07-02 1989-03-29 Polygraph Leipzig Vorrichtung zum befestigen einer biegsamen druckplatte
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DE10244945A1 (de) * 2002-09-26 2004-04-08 Maschinenfabrik Wifag Vorrichtung zum Befestigen einer flexiblen Bespannung auf Druckzylinder
DE10244944B4 (de) * 2002-09-26 2005-01-27 Maschinenfabrik Wifag Klemmvorrichtung zum Klemmen einer flexiblen Bespannung eines Zylinders einer Druckmaschine
DE102004023434A1 (de) * 2004-05-10 2005-12-08 Maschinenfabrik Wifag Rotationsdruckmaschine mit Saugvorrichtung, Saugvorrichtung und Verfahren zum Wechseln einer Druckform
DE102004023008A1 (de) * 2004-05-10 2005-12-08 Maschinenfabrik Wifag Spann- und Registereinrichtung

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Title
See references of WO2006024179A1 *

Also Published As

Publication number Publication date
US20090139419A1 (en) 2009-06-04
DE102004042342A1 (de) 2006-03-16
WO2006024179A1 (fr) 2006-03-09
DE102004042342B4 (de) 2008-02-14

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