EP0293586B1 - Encreur compartimenté pour machine à imprimer flexographique - Google Patents

Encreur compartimenté pour machine à imprimer flexographique Download PDF

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Publication number
EP0293586B1
EP0293586B1 EP88106301A EP88106301A EP0293586B1 EP 0293586 B1 EP0293586 B1 EP 0293586B1 EP 88106301 A EP88106301 A EP 88106301A EP 88106301 A EP88106301 A EP 88106301A EP 0293586 B1 EP0293586 B1 EP 0293586B1
Authority
EP
European Patent Office
Prior art keywords
anilox roller
ink duct
strip
blades
liquid
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
EP88106301A
Other languages
German (de)
English (en)
Other versions
EP0293586A2 (fr
EP0293586A3 (en
Inventor
David J. Sarazen
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 EP0293586A2 publication Critical patent/EP0293586A2/fr
Publication of EP0293586A3 publication Critical patent/EP0293586A3/de
Application granted granted Critical
Publication of EP0293586B1 publication Critical patent/EP0293586B1/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
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/18—Inking arrangements or devices for inking selected parts of printing formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the invention relates to a divided ink fountain, in particular for a flexographic printing machine, the ink fountain being divided axially into different zones by means of separating elements in order to enable the use of different colored printing inks for corresponding zones of an application or anilox roller and the ink fountain interacts with doctor blades.”
  • a low-friction surface is attached to the edge which abuts the doctor blade, the sealing element bridging the space between the doctor blades and the element being fitted to the circumference of the ductor or the trough roller.
  • the doctor blades extend axially beyond the sealing elements.
  • the separating plates and the sealing elements can be mounted on units which are effectively arranged along the ink fountain and thus along the ductor or the trough roller, in positions chosen in such a way as the axial extension of the differently colored ink zones requires.
  • the invention has the task of creating a flexible device for separating axial zones on an anilox roller for a flexographic printing machine, so that printing inks with different features, for example in different colors, can be applied to the zones in question without overlap, the Setup is simple and inexpensive and ensures effective sealing of the axial zones against each other.
  • the strip element is backed with, for example, silicone rubber with a low durometer value. This enables the seal to set itself independently of the direction of rotation of the anilox roller.
  • the ink system is arranged so that a holding structure for the separating strip elements, for the rubber backing and for the felt pads or, preferably, the entire ink fountain can be moved so that either one of the two doctor blades with the Anilox roller is in contact, depending on the direction of rotation of the anilox roller, and that the movement can also be carried out so that both doctor blades release the anilox roller, while the separating element and, preferably, the pads remain in contact with the surface of the anilox roller.
  • Fig. 2 is a schematic section perpendicular to the axis of an anilox roller, showing the ink separator according to the present invention.
  • the separating element is narrow and extends over a part the circumference of the anilox roller 10.
  • the separating element 2 is designed with a recess 13, into which a strip element 3 is inserted, the r is supported on the back by a backing 5 made of silicone rubber.
  • a width of the elements 3 and 5 of approximately 15 mm is suitable.
  • the silicone rubber backing element 5 distributes the pressure of the strip element 3 evenly over the circumference of the anilox roller.
  • the compressive force in the silicone rubber can be generated by pushing against the anilox roller 10.
  • the pressure of the strip element 3 against the anilox roller can thus be controlled.
  • the ink migration across the parting plane is effectively prevented because the liquid film of the liquid only allows it to remain between the anilox roller and the strip element 3 and, on the other hand, prevents ink from penetrating between the strip element and the anilox roller.
  • the migration of printing ink with a certain property, for example a certain color, into the printing ink with another property, for example a different color, is thus effectively prevented.
  • a silicone rubber with low hardness for example a closed-cell silicone rubber with a degree of hardness (durometer) 30, arranged behind the strip element, ensures a constant, uniform sealing pressure against the surface of the anilox roller.
  • the silicone rubber with low hardness between the wall of the separating element 2 and the strip element 3 also provides an effective seal at the corners of the doctor blades. This type of silicone rubber allows compression of about 20%, which is the reason for the slight expansion 24, 25 of the silicone rubber around the doctor ends and doctor corners.
  • the common axis 50 runs along the inking unit, in parallel to the color trough 11. You can swing, as indicated by arrow 51.
  • the axis 50 is coupled with the aid of an angle lever 52 to the support rod 41 or the bracket 40 of the tilting device of the separating element 2.
  • the lower drip system can be switched off by changing the position of the valve 18 and the lower felt pad 31 can be removed.
  • the upper felt pad 21 remains in place and the upper drip system is turned on.
  • the unwetted pillow should be removed so that it does not dry out. Removing the felt pad is easy, you only need to pull it out, you can also loosen the fastening screws that hold the relevant clamping plate 22, 32, and then take out the respective felt strips 21, 31.
  • the roller 10 can run at speeds of more than 800 rpm, for example.
  • the roller 10 can continue to idle are left, for example at 30 rpm, the color being continuously circulated between the inlet openings 45 and the outlet openings 46 - only shown in different color zones in FIG. 1 - while the color zones remain separate from one another. After tilting the shaft 50 counterclockwise of the arrow 51, both doctor blades 23 and 33 come out of engagement with the anilox roller 10.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (11)

  1. Encrier compartimenté, (11) en particulier pour une presse flexographique dans laquelle l'encrier (11) est subdivisé axialement en différentes zones (10a, 10b), au moyens d'éléments séparateurs (2), pour permettre d'utiliser des encres d'imprimerie de différentes couleurs pour les zones correspondantes d'un rouleau encreur ou anilox (10), et l'encrier (11) coopère avec des racles (23, 33), caractérisé en ce que chaque élément séparateur (2) définit une structure de support pour une bande (3) et en ce qu'un élément tampon (21, 31) fait d'une substance poreuse disposé en coïncidence avec une bande (3) est prévu pour cet élément, en ce qu'il est prévu des moyens (14a, 15a, 14b, 15b) d'approvisionnement de liquide qui sont en communication avec chaque élément tampon (21, 31), en ce que chaque bande (3) présente une surface incurvée qui est en appui contre la surface du rouleau anilox (10), est adaptée à cette surface et s'étend sur une partie de la circonférence du rouleau anilox (10), en ce que l'élément tampon (21, 31) et les moyens (14a, 15a, 14b, 15b) d'approvisionnement de liquide sont prévus pour interposer un film hydraulique fait d'un liquide séparateur entre la surface incurvée de la bande (3) et la surface du rouleau anilox (10), de telle manière que le film hydraulique ne forme une bande de liquide que sensiblement dans la région de la circonférence du rouleau anilox (10) en face de laquelle se trouve la face incurvée de la bande (3) considérée, de sorte que chaque bande (3) flotte sur le rouleau anilox (10).
  2. Encrier compartimenté selon la revendication 1, caractérisé en ce que le liquide en question est l'eau.
  3. Encrier compartimenté selon la revendication 1, caractérisé en ce que l'élément tampon (21, 31) est composé de deux éléments pouvant s'imprégner de liquide, munis chacun d'une conduite séparée (14a, 15a et 14b, 15b) d'approvisionnement de liquide, les éléments (21, 31) considérés étant disposés aux extrémités extérieures des bandes (3)
  4. Encrier compartimenté selon la revendication 1 ou 3, caractérisé en ce que les éléments tampons (21, 31) précités sont faits de feutre.
  5. Encrier compartimenté selon la revendication 1, caractérisé en ce qu'il est prévu, pour chacune des bandes (3), un élément de doublage arrière (5) qui est disposé adjacent à la bande (3) contre la face de dette dernière qui est à l'opposé du rouleau anilox (10), chaque élément de doublage arrière (5) comprenant une matière compressible.
  6. Encrier compartimenté selon la revendication 5, caractérisé en ce que la matière compressible précitée est le caoutchouc de silicone.
  7. Encrier compartimenté selon une des revendications précédentes, caractérisé en ce que chaque élément séparateur (2) est réalisé avec un évidement (13) qui s'étend sur une partie de la circonférence du rouleau anilox (12), et l'élément de doublage arrière (5) est tenu dans l'évidement (13).
  8. Encrier compartimenté selon une des revendications précédentes, caractérisé en ce que les racles (23, 33) sont subdivisées dans leur direction axiale par les bandes (3), les racles (23, 33) sont en contact par une partie de leur arête avec les éléments de doublage arrière (5) en matière compressible, de sorte que la matière compressible se bombe contre les racles (23, 33), et les racles (23, 33) sont appuyées à joint étanche contre les éléments de doublage arrière (5).
  9. Encrier compartimenté selon la revendication 5, caractérisé en ce qu'il est prévu des moyens (41, 50, 52) qui donnent appui à l'encrier (11) en laissant ce dernier mobile, pour permettre de mettre sélectivement les racles (23, 53) en appui contre le rouleau anilox (10) ou d'écarter les racles (23, 33) d'une petite distance qui suffit pour que les racles (23, 33) soient dégagées du rouleau anilox (10), alors que le contact élastique entre la bande (3) et le rouleau anilox (10) reste conservé et que le dépôt de liquide séparateur sur le rouleau anilox (10) à l'aide des moyens précités (14a, 15a ou 14b, 15b) d'approvisionnement de liquide peut se poursuivre.
  10. Procédé pour isoler mutuellement à joint étanche des encres d'imprimerie possédant des propriétés différentes contenues dans des zones axiales (10a, 10b) d'un rouleau anilox (10) dans le cas d'un encrier compartimenté (11), dans lequel l'encrier (11) est subdivisé axialement en différentes zones (10a, 10b) au moyen d'éléments séparateurs (2) pour permettre d'utiliser des encres d'imprimerie de différentes couleurs pour les zones correspondantes d'un rouleau encreur ou rouleau anilox (10) et l'encrier (11) coopère avec des racles (23, 33), caractérisé par l'interposition d'une bande circonférentielle d'un film de liquide séparateur entre les zones précitées (10a, 10b) réalisée par application d'un tampon poreux (21, 31) du type mèche contre la surface du rouleau anilox (10), saturation dudit tampon (21, 31) par le liquide séparateur et glissement des bandes (3) sur ledit film.
  11. Procédé selon la revendication 10, caractérisé en ce que, pour le liquide précité, on utilise l'eau.
EP88106301A 1987-05-29 1988-04-20 Encreur compartimenté pour machine à imprimer flexographique Expired - Lifetime EP0293586B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/056,785 US4796528A (en) 1987-05-29 1987-05-29 Separated ink fountain for a flexographic printing machine
US56785 1987-05-29

Publications (3)

Publication Number Publication Date
EP0293586A2 EP0293586A2 (fr) 1988-12-07
EP0293586A3 EP0293586A3 (en) 1990-02-28
EP0293586B1 true EP0293586B1 (fr) 1992-12-02

Family

ID=22006570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106301A Expired - Lifetime EP0293586B1 (fr) 1987-05-29 1988-04-20 Encreur compartimenté pour machine à imprimer flexographique

Country Status (5)

Country Link
US (1) US4796528A (fr)
EP (1) EP0293586B1 (fr)
JP (1) JP2716457B2 (fr)
CA (1) CA1299915C (fr)
DE (1) DE3876293D1 (fr)

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US5012736A (en) * 1987-09-21 1991-05-07 Paper Converting Machine Company Sealing assembly for liquid fountain
US5125341A (en) * 1991-05-15 1992-06-30 Paper Converting Machine Company Ink unit for printing press and method
US5150651A (en) * 1991-06-10 1992-09-29 Flores Carlos R Doctor-blade assembly for flexographic press
US5253582A (en) * 1991-09-19 1993-10-19 Rockwell International Corporation Sealing device for a printing press
US5230286A (en) * 1991-10-11 1993-07-27 De La Rue Giori, S.A. Inking unit for a printing machine
US5243907A (en) * 1992-01-22 1993-09-14 The Langston Corporation Divider seal for split-fountain chambered doctor blade for a flexographic printing press
US5410961A (en) * 1992-12-30 1995-05-02 Fit Group, Inc. Fountain assembly
DE4315595C2 (de) * 1993-05-11 1995-02-16 Roland Man Druckmasch Einsatz für Keilfarbkästen von Druckmaschinen
DE4447123C1 (de) * 1994-12-29 1996-04-11 Koenig & Bauer Albert Ag Kammerrakel für eine Rotationsdruckmaschine
US5630363A (en) 1995-08-14 1997-05-20 Williamson Printing Corporation Combined lithographic/flexographic printing apparatus and process
US5651316A (en) * 1995-10-02 1997-07-29 Howard W. DeMoore Retractable printing/coating unit operable on the plate and blanket cylinders simultaneously from the dampener side of the first printing unit or any consecutive printing unit of any rotary offset printing press
US5598777A (en) * 1995-10-02 1997-02-04 Howard W. DeMoore Retractable printing/coating unit operable on the plate and blanket cylinders
US5826509A (en) * 1995-10-18 1998-10-27 Deneka; P. Kenneth Printing coating head device
US5983797A (en) * 1997-11-17 1999-11-16 Howard W. DeMoore End seal engaging bearer of anilox roller assembly
US6029574A (en) * 1998-09-30 2000-02-29 Heidelberger Druckmaschinen Ag Dual ink supply system
DE10136028C5 (de) * 2001-07-25 2016-03-17 manroland sheetfed GmbH Verfahren und Vorrichtung zum Dosieren eines flüssigen Mediums in einer Verarbeitungsmaschine
US7178461B2 (en) * 2002-12-09 2007-02-20 Color Control Corp. Ink fountain assembly with non-tilt cheeks and liner replacement mechanism
JP4533275B2 (ja) * 2005-08-11 2010-09-01 キヤノン株式会社 液体塗布装置およびインクジェット記録装置
CN101400518A (zh) * 2006-03-09 2009-04-01 图像印刷与科技公司 用于高粘度墨的刮刀腔
US7487724B1 (en) 2006-05-09 2009-02-10 Larry William Evans Liquid transfer arrangement for applying a printing liquid to a printing surface
DK176626B1 (da) * 2007-08-21 2008-12-01 Tresu Anlaeg As Pakning til kammerrakel
JP2009214302A (ja) * 2008-03-07 2009-09-24 Toppan Printing Co Ltd 凸版印刷装置
WO2014159780A2 (fr) 2013-03-13 2014-10-02 Probity Engineering, Llc Appareil encreur et procédé de réglage du débit d'encre pour appareil de flexographie
US9807871B2 (en) 2013-08-28 2017-10-31 3M Innovative Properties Company Electronic assembly with fiducial marks for precision registration during subsequent processing steps
JP5507748B1 (ja) * 2013-10-01 2014-05-28 大倉工業株式会社 包装体用フィルムの製造方法
JP5587482B1 (ja) * 2013-10-28 2014-09-10 大倉工業株式会社 包装用フィルムの製造方法
EP3193045B1 (fr) * 2016-01-14 2019-03-20 Windmöller & Hölscher KG Élément d'étanchéite pour étancher les faces laterales d'une chambre à racle
DE102018129093A1 (de) * 2018-11-19 2020-05-20 Windmöller & Hölscher Kg Drainbox für eine Rakelkammer
DE102022121229A1 (de) * 2022-08-23 2024-02-29 Koenig & Bauer Ag Farbwerk mit einer Schmiermittelzufuhr und Verfahren zum Abdichten einer Farbwanne
US12311652B2 (en) * 2023-09-12 2025-05-27 Eastman Kodak Company Inking system with plurality of fountain roller elements
CN117734295A (zh) * 2023-12-30 2024-03-22 武汉华威科智能技术有限公司 一种柔性传感器的柔版印刷机构

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US3831517A (en) * 1972-12-22 1974-08-27 Dayco Corp Fountain divider
JPS528722A (en) * 1975-07-10 1977-01-22 Denki Onkyo Co Ltd Fly-back trans former
US4165688A (en) * 1977-04-14 1979-08-28 Magna-Graphics Corporation Ink dam for printing press
FR2421732A1 (fr) * 1978-04-07 1979-11-02 Sarda Jean Lucien Procede et mecanisme d'encrage en une ou plusieurs couleurs pour impressions typographiques, offset ou autres
DE8126229U1 (de) * 1981-09-09 1986-08-21 Windmöller & Hölscher, 4540 Lengerich Spülfarbwerk für eine Rotationsdruckmaschine
DE3241124A1 (de) * 1982-11-06 1984-05-10 Koenig & Bauer AG, 8700 Würzburg Farbabteilkeil in einem farbkasten einer rotationsdruckmaschine
DE3320638C2 (de) * 1983-06-08 1986-10-16 Koenig & Bauer AG, 8700 Würzburg Farbabteileinrichtung an Farbkastenwalzen von Druckmaschinen
DE3505598C2 (de) * 1984-10-30 1986-08-14 Windmöller & Hölscher, 4540 Lengerich Spülfarbwerk mit geteilter Farbkammerrakel
DE3539759C1 (de) * 1985-11-09 1987-04-02 Roland Man Druckmasch Farbteiler fuer ein Flexo-Farbwerk

Also Published As

Publication number Publication date
CA1299915C (fr) 1992-05-05
EP0293586A2 (fr) 1988-12-07
DE3876293D1 (de) 1993-01-14
JPS63312149A (ja) 1988-12-20
US4796528A (en) 1989-01-10
EP0293586A3 (en) 1990-02-28
JP2716457B2 (ja) 1998-02-18

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