EP0683046A1 - Vorrichtung zum Befestigen von Druckplatten auf Trägerzylindern von Flexodruckmaschinen - Google Patents

Vorrichtung zum Befestigen von Druckplatten auf Trägerzylindern von Flexodruckmaschinen Download PDF

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Publication number
EP0683046A1
EP0683046A1 EP95450008A EP95450008A EP0683046A1 EP 0683046 A1 EP0683046 A1 EP 0683046A1 EP 95450008 A EP95450008 A EP 95450008A EP 95450008 A EP95450008 A EP 95450008A EP 0683046 A1 EP0683046 A1 EP 0683046A1
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EP
European Patent Office
Prior art keywords
wall
sleeve
mounting
support cylinder
cylinder
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
EP95450008A
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English (en)
French (fr)
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EP0683046B1 (de
Inventor
Jean Francille
Philippe Francille
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0683046A1 publication Critical patent/EP0683046A1/de
Application granted granted Critical
Publication of EP0683046B1 publication Critical patent/EP0683046B1/de
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
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes

Definitions

  • the present invention relates to a device for mounting printing sleeves on cylinders of flexographic printing machines.
  • Flexographic printing machines which comprise either cylinders on which the printing plates are directly fixed, for example with double-sided adhesives, or support cylinders on which are arranged plate sleeves, arranged coaxially with the support cylinder and designed to receive printing plates.
  • This sleeve-carrying cylinder is provided, at its periphery, with through holes, which creates an air mattress as soon as the sleeve begins to be sufficiently threaded, thus facilitating the mounting of this sleeve.
  • the present invention aims to overcome the drawbacks of the prior art as just summarized, by allowing the sleeves to be mounted relatively easily, by allowing mounting even on cylinders which are full or which are not equipped. air passage holes, by providing different variants for applications to flexographic printing machines whose mechanical characteristics are variable, leading to the manufacture of products having a lower cost price than those of the prior art, and by providing for the use of current materials, in particular composite materials, in order to achieve, in addition to the other advantages, weight savings.
  • the device for mounting a flexographic printing sleeve on a support cylinder comprises two flanges disposed at the ends of a rigid annular cylinder with an outer wall and an inner wall, designed to be coaxial to the support cylinder, the external face of the external wall of which is designed to support a printing plate and the internal wall of which is composed of an elastically and radially deformable wall, over at least part of its length, the internal face of this internal wall being arranged opposite the external face of the support cylinder, inner wall which forms with the outer wall a sealed chamber, connected by a valve to a source of fluid, so as to deform the elastically deformable wall and to press it on the outer face of the support cylinder.
  • the elastically deformable wall has a nominal internal diameter greater than that of the external diameter of the support cylinder and the fluid introduced into the chamber, after assembly is at a pressure greater than that of atmospheric pressure
  • the sleeve comprises an inflatable envelope, arranged in the hermetic chamber, equipped with a fluid connection endpiece so as to allow it to swell.
  • An improvement of the invention provides for having a bar equipped with sizes, arranged between the envelope and the inner face of the outer wall of the sleeve.
  • the elastically deformable wall has a nominal internal diameter less than that of the external diameter of the support cylinder and the fluid introduced into the chamber, before assembly, is at a pressure lower than that of the pressure atmospheric.
  • the invention also relates to a sleeve for the implementation of the device and this sleeve is made of composite material.
  • This composite material comprises at least one layer of honeycomb material with at least one layer of resin on the inside and at least one layer of resin on the outside.
  • the layer of honeycomb material is shaped by wrapping with an annular section.
  • one of the flanges and the inner and outer walls of the sleeve chamber came simultaneously from manufacturing.
  • FIG. 1 reference is made to 10 the support cylinder and 12 to the plate-holding sleeve.
  • the support cylinder comprises, in known manner, axes 14 allowing it to be mounted in a flexographic printing machine.
  • It includes an outer face 16 on which the sleeve is mounted, coaxially.
  • the sleeve comprises two walls, one 18, exterior and the other 20, interior.
  • Two flanges 22 and 24 are also arranged at the ends of this sleeve, between the outer and inner walls so as to delimit an annular chamber 26.
  • One of the flanges in this case, the flange 22, is equipped with a valve 28 for supplying fluid.
  • the outer wall 18 comprises, considered concentrically, an inner face 30 and an outer face 32.
  • the interior wall 20 includes an exterior face 34 and an interior face 36.
  • the internal wall being arranged coaxially with the support cylinder, the internal face is opposite and even in contact with the external face of the support cylinder.
  • This wall is made of a material having elastic qualities which allow a certain expansion and / or a certain radial retraction, of the order of a few hundredths of a millimeter to give an order of magnitude.
  • the internal wall 20 of the sleeve has a larger nominal diameter than that of the support cylinder 10.
  • the inner wall of the sleeve is pressed against the support cylinder by its inner face, which causes sufficient friction forces to ensure perfect immobilization of the sleeve on the support cylinder.
  • FIGS. 2A and 2B an alternative embodiment is shown, which uses the vacuum during assembly.
  • the difference essentially consists in that the inner wall of the sleeve has, this time, an inner diameter smaller than that of the plate cylinder, except in line with the flanges, and the fluid is in fact a vacuum connection which makes it possible to put in depression inside the chamber 26.
  • the sleeve chamber is placed under vacuum so that the inside diameter of the sleeve is greater than the diameter of the support cylinder, then the sleeve is introduced coaxially around this cylinder.
  • the vacuum is broken in the chamber, which has the effect of allowing the interior wall to resume its nominal interior diameter which is smaller than that of the cylinder, the difference being order of a few hundredths of a millimeter, which consequently generates forces for pressing the sleeve onto the cylinder, thus avoiding any rotation of the sleeve relative to the cylinder
  • the difference is located to the right of the chamber 26 which comprises, as shown in these Figures 3A and 3B, a casing 38, which is connected to the valve 28 for pressurization.
  • the interior wall 20, elastically deformable, has a nominal interior diameter greater than that of the cylinder as in the example shown in FIGS. 1A and 1B.
  • the outer face of the outer wall is designed to receive a plate and a means of fixing this plate on this face consists of having sizes 40, that is to say a set of points 42 which, in this mode of embodiment, are retractable, along an external generator of the sleeve.
  • the sizes include a connecting bar 44, arranged in the chamber 26 and more particularly between the casing 38 and the inner face 30 of the outer wall.
  • Springs 46 in this embodiment, leaf springs, are interposed between the casing 38 and the inner face 30 of the outer wall.
  • the tips 42 pass through through holes made in the outer wall 18.
  • a groove is machined in the flanges so as to guide the ends of the bar 44 of the sizes 40.
  • the grooves avoid too large a retraction in amplitude which could lead to an exit of the points out of the holes which serve as a guide.
  • Figure 5 shows schematically a set of four sleeves a , b , c and d arranged on the same support cylinder by means of the mounting device according to the invention.
  • the invention also relates to a sleeve suitable for this type of mounting and more particularly a composite sleeve.
  • the elasticity of the inner wall 20 must be very low since it is only a few hundredths of a millimeter of play to allow coaxial mounting of the sleeve on a cylinder, the surfaces being rectified.
  • the present invention proposes to produce a monolithic sleeve by wrapping at least one layer of honeycomb material with a binding polymer on a mandrel 47, mechanically expandable to ensure the withdrawal of the part, the outside diameter of which expanded is exactly that of a support cylinder intended to receive the sleeve.
  • the polymer is studied to cause a withdrawal of the sleeve of the order of a few hundredths of a millimeter after polymerization.
  • the sleeve can expand in the elastic range of these few hundredths when it is subjected to radial pressure.
  • the sleeve is produced in a single piece which includes one of the two flanges, in this case the flange 24, as well as the two outer 18 and inner 20 walls.
  • the inner wall 20, which must have a certain elasticity, has a thickness less than that of the outer wall 18 which requires great rigidity.
  • the dies 48 and 50 are represented in a complementary manner.
  • Such a layer of a conductive coating can be deposited by electrolysis.
  • Such sleeves can be used in heliography on suitable machines, in particular for applications where the quality of printing is paramount, this is the case with bar codes.
  • Such machines generally include an ink roller, operating by dipping, pressed against the printing roller, a scraper ensuring the removal of the excess ink.
  • the sleeve according to the invention can be mounted on support cylinders for two different applications, flexography and rotogravure.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP95450008A 1994-05-19 1995-05-18 Hülse zum Montieren auf Trägerzylindern von Flexodruckmaschinen Expired - Lifetime EP0683046B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9406416A FR2720030B1 (fr) 1994-05-19 1994-05-19 Dispositif de montage de manchons d'impression sur des cylindres supports de machines flexographiques.
FR9406416 1994-05-19

Publications (2)

Publication Number Publication Date
EP0683046A1 true EP0683046A1 (de) 1995-11-22
EP0683046B1 EP0683046B1 (de) 1999-08-18

Family

ID=9463550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95450008A Expired - Lifetime EP0683046B1 (de) 1994-05-19 1995-05-18 Hülse zum Montieren auf Trägerzylindern von Flexodruckmaschinen

Country Status (5)

Country Link
EP (1) EP0683046B1 (de)
AT (1) ATE183445T1 (de)
DE (1) DE69511454T2 (de)
ES (1) ES2138174T3 (de)
FR (1) FR2720030B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742379A1 (fr) * 1995-12-14 1997-06-20 Komori Chambon Dispositif de fixation d'un manchon sur un axe d'un cylindre porte-cliches
US6740530B1 (en) 2000-11-22 2004-05-25 Xerox Corporation Testing method and configurations for multi-ejector system
EP2093058A1 (de) * 2008-02-20 2009-08-26 Spilker GmbH Auswechselbare Druckwalze
EP2398646A4 (de) * 2009-02-17 2012-10-31 Luminite Prod Corp Druckhülse
US10843457B2 (en) * 2017-11-13 2020-11-24 Rossini Spain Printing Rollers SAU Adapting sleeve with hydraulic pads for a flexographic printing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004004375U1 (de) 2004-03-18 2004-10-28 Polywest Kunststofftechnik Saueressig & Partner Gmbh & Co. Kg Hülse für Druckmaschinen
DE102004013552A1 (de) * 2004-03-19 2005-10-06 Goss International Montataire S.A. Aufzughülse für einen Zylinder in einer Druckmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621867A (en) * 1950-02-10 1952-12-16 Karl E L Grettve Expansible mandrel
US2801694A (en) * 1955-12-06 1957-08-06 Jagenberg Werke Ag Fastening means for roll cutting machine assembly
FR1369471A (fr) * 1963-07-02 1964-08-14 Wean Damiron Mandrin expansible par chambre dilatable
US3146709A (en) 1962-04-09 1964-09-01 West Essex Printing Plate Inc Method and apparatus for mounting printing sleeves
US3510082A (en) * 1967-11-24 1970-05-05 Arthur T Williams Pneumatic chuck
FR2386416A1 (fr) 1977-04-04 1978-11-03 Strachan & Henshaw Ltd Procede et moyens pour fabriquer et monter des manchons d'impression

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621867A (en) * 1950-02-10 1952-12-16 Karl E L Grettve Expansible mandrel
US2801694A (en) * 1955-12-06 1957-08-06 Jagenberg Werke Ag Fastening means for roll cutting machine assembly
US3146709A (en) 1962-04-09 1964-09-01 West Essex Printing Plate Inc Method and apparatus for mounting printing sleeves
FR1369471A (fr) * 1963-07-02 1964-08-14 Wean Damiron Mandrin expansible par chambre dilatable
US3510082A (en) * 1967-11-24 1970-05-05 Arthur T Williams Pneumatic chuck
FR2386416A1 (fr) 1977-04-04 1978-11-03 Strachan & Henshaw Ltd Procede et moyens pour fabriquer et monter des manchons d'impression

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742379A1 (fr) * 1995-12-14 1997-06-20 Komori Chambon Dispositif de fixation d'un manchon sur un axe d'un cylindre porte-cliches
US6740530B1 (en) 2000-11-22 2004-05-25 Xerox Corporation Testing method and configurations for multi-ejector system
EP2093058A1 (de) * 2008-02-20 2009-08-26 Spilker GmbH Auswechselbare Druckwalze
EP2398646A4 (de) * 2009-02-17 2012-10-31 Luminite Prod Corp Druckhülse
US10843457B2 (en) * 2017-11-13 2020-11-24 Rossini Spain Printing Rollers SAU Adapting sleeve with hydraulic pads for a flexographic printing machine

Also Published As

Publication number Publication date
EP0683046B1 (de) 1999-08-18
DE69511454T2 (de) 2000-08-03
FR2720030A1 (fr) 1995-11-24
ES2138174T3 (es) 2000-01-01
FR2720030B1 (fr) 1996-08-09
ATE183445T1 (de) 1999-09-15
DE69511454D1 (de) 1999-09-23

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