EP1523411A1 - Cylindre porte-cliche pour machine d'imprimerie - Google Patents

Cylindre porte-cliche pour machine d'imprimerie

Info

Publication number
EP1523411A1
EP1523411A1 EP03732234A EP03732234A EP1523411A1 EP 1523411 A1 EP1523411 A1 EP 1523411A1 EP 03732234 A EP03732234 A EP 03732234A EP 03732234 A EP03732234 A EP 03732234A EP 1523411 A1 EP1523411 A1 EP 1523411A1
Authority
EP
European Patent Office
Prior art keywords
forme cylinder
printing film
printing
area
adhesive
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Withdrawn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
EP03732234A
Other languages
German (de)
English (en)
Inventor
Michael Koblinger
Karl Erich Albert Schaschek
Georg Schneider
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 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 AG filed Critical Koenig and Bauer AG
Publication of EP1523411A1 publication Critical patent/EP1523411A1/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Withdrawn legal-status Critical Current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
    • B41F27/1275—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means by means of adhesives, staples

Definitions

  • the invention relates to a forme cylinder for a printing press according to the preamble of claim 1.
  • DE 42 17 941 C2 discloses a method and a device for applying a cliché to the outer surface of a forme cylinder, the clichés being fitted in a suitable manner, pressed on without creases and being glued in the process.
  • DE 44 30 555 C1 and DE 3837898 C2 describe methods for imaging forme cylinders. Material from a transfer film is selectively applied directly to the surface of the forme cylinder at the ink-carrying points. Squeegees can be provided to remove this selectively applied material.
  • the ink-guiding points As an alternative to attaching the ink-guiding points directly to the outer surface, it is also known to use printing foils on the outside of which the ink-guiding points are applied. By using these printing foils, it is in particular possible to achieve a higher degree of automation and also to store more printing forms in one machine.
  • an adhesive layer is provided between the forme cylinder and the printing foil.
  • self-adhesive films can be used which, with a high degree of automation, allow the printing film to be reliably attached to the forme cylinder.
  • the old printing film must be removed from the forme cylinder so that a new printing film can then be attached.
  • the fixation between the forme cylinder and the printing film must pass through the adhesive layer realized, can be solved.
  • US 2001/0025575 A1 describes a method for mounting a printing film, in which a detachment area is provided on the printing film in intermediate steps. When fully assembled, the printing film has no peeling area.
  • US 3,358,598 A shows a forme cylinder with an axially extending adhesive strip on which both ends of a pressure plate are glued.
  • the invention has for its object to provide a form cylinder for a printing press, the printing film is easy to disassemble.
  • the advantages achievable with the invention consist in particular in that, by arranging a detachment area on one of the longitudinal edges of the printing films, in which the printing film is not fixed by the adhesive layer, the printing film in this area can be lifted off the forme cylinder in a simple manner and then removed ,
  • the detachment area may of course only be designed so large that an unwanted detachment of the printing film during printing operation is reliably excluded.
  • the printing film can easily be raised in this area in a simple manner and a correspondingly suitable force can be applied to pull off the printing film.
  • a non-existing fixation of the printing film in the sense of the present invention is intended to mean that the adhesive layer conveys no or only a weak adhesive force in the release area, so that this weak adhesive force can be overcome in a simple manner.
  • the detachment area is only provided on one of the longitudinal edges, since the force required to pull off the printing film only has to be applied on one longitudinal edge.
  • the longitudinal edge of the printing film provided with the detachment area points in the printing direction of the forme cylinder.
  • the load on this longitudinal edge pointing in the printing direction of the forme cylinder is namely lower than that on the opposite longitudinal edge, so that the load on the adhesive layer at the boundaries of the release area is correspondingly weaker during printing.
  • the printing film is glued onto the forme cylinder with a slight overlap. I.e. one of the longitudinal edges of the printing film lies with its adhesive layer on the outside of the printing film in the area of the other longitudinal edge. If an adhesive has been selected for the adhesive layer that does not adhere to the outside of the printing film, the desired release area is formed due to the overlap.
  • This type of formation of the separation area has the advantage that the forme cylinder can be designed as a uniform round cylinder without a separate area for the start of printing.
  • the release area is formed in that at least one release surface is provided on the outside of the forme cylinder, on which the adhesive layer does not adhere.
  • an insert element can be worked into the cylinder surface of the forme cylinder, for example, the longitudinal axis of which extends parallel to the axis of rotation.
  • the material properties of the insert element are to be selected so that the adhesive forming the adhesive layer does not adhere to the insert element.
  • a non-adhesive intermediate element is applied or a non-adhesive intermediate layer is applied to form the detachment area on the adhesive layer. This can be achieved, for example, by placing a cover strip on a longitudinal edge of a self-adhesive printing film, so that the adhesive layer can no longer adhere in the region of the cover strip.
  • the adhesive layer on the forme cylinder and / or on the printing film has non-adhesive cutouts for forming the detachment area. I.e. in other words, not the entire surface of the forme cylinder or the printing film is provided with adhesive, but rather recesses are provided in the region of the longitudinal edges, in which the printing film does not adhere to the forme cylinder through the adhesive layer.
  • At least one depression is provided on the forme cylinder, which can in particular be designed in the manner of a groove extending along the longitudinal edge of the printing film. Due to the inherent rigidity of the printing film, the printing film does not come into contact with this recess, so that the adhesive layer cannot impart an adhesive effect between the printing film and the forme cylinder.
  • an adhesive is selected for the adhesive layer, which can be substantially completely removed with the printing film when the printing film is removed. This ensures that after the printing film has been removed, the form cylinder can be immediately covered with a new printing film.
  • Figure 1 shows a device for attaching and removing a printing film glued to a forme cylinder in a schematically illustrated cross section.
  • FIG. 2 shows a first exemplary embodiment for forming a detachment area in a schematically illustrated cross section
  • FIG. 3 shows a second exemplary embodiment for forming a detachment area in a schematically illustrated cross section
  • FIG. 4 shows a third embodiment for forming a detachment area in a schematically illustrated cross section
  • Fig. 5 shows a fourth embodiment for forming a detachment area in a schematically illustrated cross section.
  • FIG. 6 shows a forme cylinder with glued-on printing film in a view from above
  • FIG. 7 shows a second exemplary embodiment of a forme cylinder with a pressure film glued on, viewed from above;
  • the forme cylinder 01 partially shown in FIG. 1 can be glued to a printing film 03 previously imaged in a digital imaging unit, not shown, by using a device 02.
  • an adhesive layer is provided on the inside of the printing film 03, which adheres to the outer surface of the forme cylinder 01.
  • the printing film 03 is stored on a supply roll 04 before being glued on.
  • a cutting and pressing roller 05 is pivoted against the forme cylinder 01, so that the front longitudinal edge 06 on the forme cylinder 01 comes into contact and adheres to the forme cylinder 01 with the adhesive layer.
  • the printing film 03 is then rolled off until the entire circumference of the forme cylinder 01 can be covered.
  • the printing film 03 is then cut off by means of a cutting device 08 to form the rear longitudinal edge 13 (see FIGS. 2 to 7) and finally completely applied to the forme cylinder 01.
  • a device 09 designed in the manner of a squeegee 09 is provided on the device 02 and can be pivoted between a rest position and a functional position in accordance with the movement arrow 11.
  • a first exemplary embodiment of a detachment area 12 is shown schematically in FIG.
  • the rear longitudinal edge 13 overlaps the front longitudinal edge 06 of the printing film 03 by a few millimeters, e.g. B. about 3 mm to 30 mm.
  • the adhesive layer comes to rest on the silicone surface of the printing film 03 in the region of the rear longitudinal edge 13, to which it adheres only slightly or not at all.
  • the lifting device 09 can then be pivoted downward into its functional position, as is shown schematically in FIG. 2.
  • the tip of the squeegee 09 can thereby be brought into engagement with the rear longitudinal edge 13, it being possible for the printing film 03 in the detachment area 12 to be simply raised by corresponding rotary movement of the forme cylinder 01. If the printing film 03 is raised in the detachment area 12, the printing film 03 can be removed in a simple manner by the doctor blade 09 by turning the forme cylinder 01 accordingly.
  • a recess 16 formed in the manner of a groove 16 is provided.
  • the front longitudinal edge 06 or the rear longitudinal edge 13 must then be attached to the forme cylinder 01 so that it comes to lie above the recess 16 in order to form the release region 14. Due to the inherent rigidity of the printing film 03, the printing film 03 then does not lie on the outside of the depression 16, so that no adhesive force acts between the forme cylinder 01 and the printing film 03 in the area of the depression 16.
  • an insert element 18 is incorporated into the surface of the forme cylinder 01.
  • the insert element 18 is made of a material, for example of silicone-containing plastic, on which the adhesive layer adheres only weakly or not at all.
  • an intermediate element 21 in the form of an adhesive strip 21 is arranged on the rear longitudinal edge 13 of the printing film 03 in order to form the detachment area 19.
  • the intermediate element 21 is fastened to the forme cylinder 01 on the printing film 03 before the rear longitudinal edge 13 is put on and thereby covers the adhesive layer along the longitudinal edge 13.
  • the direction of detachment i. H. the opposite pressure direction of the forme cylinder 01 is indicated by an arrow 22.
  • the non-adherent longitudinal edge 13 is therefore trailing in printing operation.
  • the detachment area 14; 17; 19 is not a thickening due to an overlap, which leads to a minimization of vibrations in the printing operation.
  • FIG. 6 shows a forme cylinder 01 with a pressure film 03 glued on, in a view from above.
  • the detachment area comprises 23a; 23b only the two corners on the rear longitudinal edge 13.
  • the printing film 03 can be gripped and pulled off in a simple manner at one of the detachment areas 23a or 23b.
  • FIG. 7 shows an alternative exemplary embodiment to the embodiment shown in FIG. 6.
  • the detachment region 24 extends continuously along the entire rear longitudinal edge 13. The rear longitudinal edge 13 can thus be lifted from the forme cylinder 01 over its entire length in a simple manner and then be subtracted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

L'invention concerne un cylindre porte-cliché (01) pour machine d'imprimerie, qui comprend au moins un film d'impression (03), ce dernier étant fixé sur la périphérie dudit cylindre au moyen d'une couche adhésive. Le film d'impression, lorsqu'il est complètement monté, présente, sur un bord longitudinal (06) s'étendant dans le sens axial du cylindre porte-cliché, au moins une zone de décollement (12 ; 14 ; 17 ; 23a ; 23b ; 24) dans laquelle il n'est pas fixé audit cylindre par la couche adhésive.
EP03732234A 2002-07-18 2003-05-20 Cylindre porte-cliche pour machine d'imprimerie Withdrawn EP1523411A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10232551 2002-07-18
DE2002132551 DE10232551B4 (de) 2002-07-18 2002-07-18 Formzylinder für eine Druckmaschine
PCT/DE2003/001628 WO2004016432A1 (fr) 2002-07-18 2003-05-20 Cylindre porte-cliche pour machine d'imprimerie

Publications (1)

Publication Number Publication Date
EP1523411A1 true EP1523411A1 (fr) 2005-04-20

Family

ID=30010144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03732234A Withdrawn EP1523411A1 (fr) 2002-07-18 2003-05-20 Cylindre porte-cliche pour machine d'imprimerie

Country Status (4)

Country Link
EP (1) EP1523411A1 (fr)
AU (1) AU2003239761A1 (fr)
DE (1) DE10232551B4 (fr)
WO (1) WO2004016432A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK177831B1 (da) 2013-02-18 2014-09-01 Tresu As Anti bouncing trykvalse/sleeve
DE102013222175B4 (de) 2013-10-31 2017-11-09 Koenig & Bauer Ag Druckwerk einer Offsetrotationsdruckmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358598A (en) * 1966-01-27 1967-12-19 Middleton John O'brien Method of mounting plates to printing machine cylinders
DE3219094A1 (de) * 1982-05-21 1983-11-24 Reck, Bernd, 5450 Neuwied Verfahren und vorrichtung zum partiellen reduzieren der haftwirkung an doppelseitigen klebebaendern, sowie an den mit diesen klebebaendern zu fixierenden klischees, offsetdrucktuechern und anderen gegenstaenden, sowie an den zur fixierung bestimmten fuegeflaechen
DE3837898A1 (de) * 1988-11-09 1990-06-13 Roland Man Druckmasch Verfahren und vorrichtung zur integrierten druckformherstellung an einer offset- druckmaschine
DE4009649A1 (de) * 1990-03-26 1991-10-02 Koenig & Bauer Ag Verfahren und vorrichtung zur druckplattenbefestigung
DE4217941C2 (de) * 1992-05-30 1994-10-06 Koenig & Bauer Ag Verfahren und Vorrichtung zum paßgenauen Aufbringen von Klischees
JPH0752363A (ja) * 1993-08-20 1995-02-28 Ryobi Ltd 排版装置
DE4430555C1 (de) * 1994-08-27 1996-04-04 Roland Man Druckmasch Verfahren und Vorrichtung zur Herstellung einer Druckform
US6450092B2 (en) * 2000-02-01 2002-09-17 Creoscitex Corporation Ltd. Method of applying double-sided adhesive tape and gravure printing plates to gravure printing drums

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004016432A1 *

Also Published As

Publication number Publication date
WO2004016432A1 (fr) 2004-02-26
DE10232551B4 (de) 2006-05-18
AU2003239761A1 (en) 2004-03-03
DE10232551A1 (de) 2004-02-05

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