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EP1567343B1 - Nettoyage de cylindres dans des machines a imprimer - Google Patents

Nettoyage de cylindres dans des machines a imprimer Download PDF

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Publication number
EP1567343B1
EP1567343B1 EP03769386A EP03769386A EP1567343B1 EP 1567343 B1 EP1567343 B1 EP 1567343B1 EP 03769386 A EP03769386 A EP 03769386A EP 03769386 A EP03769386 A EP 03769386A EP 1567343 B1 EP1567343 B1 EP 1567343B1
Authority
EP
European Patent Office
Prior art keywords
rolls
printing
solvent
cleaning
doctor chamber
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
EP03769386A
Other languages
German (de)
English (en)
Other versions
EP1567343A1 (fr
Inventor
Lutz Telljohann
Frank Dirksmeier
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1567343A1 publication Critical patent/EP1567343A1/fr
Application granted granted Critical
Publication of EP1567343B1 publication Critical patent/EP1567343B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/02—Cleaning arrangements or devices for forme cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/04—Cleaning arrangements or devices for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices

Definitions

  • the invention relates to a method for cleaning components of rollers involved in the printing process, which remain during the cleaning process in the printing press and there are acted upon by solvents according to the preamble of claim 1.
  • the printing of a printing substrate in a flexographic printing machine is performed by a method in which the printing material is guided on a cylinder and a first roller, which is covered with printing plates, and the ink carried by the printing plate applied to the substrate.
  • the printing ink required for this purpose is removed by one or more further rollers from a doctoring chamber serving as a paint reservoir and transferred to the printing forms of the printing drum.
  • An apparatus for carrying out the method comprises a nozzle including a mixing chamber in which a fluid is provided by mixing pressurized air and a solvent.
  • the nozzle sprays the fluid in the direction of the pressure roller, whereby dust, fibers and other particles are released from the printing plate.
  • the device includes a nipple which sucks the fluid as well as dust, fibers and other particles from the printing forme.
  • the DE 195 48 535 A1 shows a cleaning method for a doctor blade chamber of a rotary printing machine. For cleaning, the residual color is pumped out of the doctor blade chamber and then rinsed with solvent in a closed circuit.
  • the US 5 213 044 A1 shows the cleaning method of an offset printing machine, wherein for cleaning the rollers involved in inking initially the remaining color pumped from the doctor chamber and then cleaning fluid is pumped into the same. The rollers continue to run and apply the residual color on a piece of waste of the printing material.
  • the EP 0 612 618 A2 shows a cleaning method for a coating system of an offset printing press. To clean this coating system, the coating fluid from the doctor blade chamber pumped and then pumped cleaning fluid and the applicator roll cleaned by turning.
  • the object of the invention is therefore to propose a method for cleaning components of rolls involved in the printing process, which does not require an additional device to be integrated in the inking unit and with which the components of all rollers involved in the printing process can be effectively cleaned.
  • the solution to this problem is achieved by a method for cleaning components of rolls involved in the printing process according to claim 1. Accordingly, first the standing in direct connection with the doctoring chamber roller is cleaned, while the operative connection with the or the other rollers is interrupted and then successively the operative connection between the respective cleaned roller and the next adjacent roller is restored. Thus, the roller which is in direct connection with the doctoring chamber is first cleaned, while no further roller is in contact with the roller which is in direct connection with the doctoring chamber. After cleaning one roller, the next adjacent roller is brought back into contact with the previously cleaned roller, again breaking the contact with the next adjacent and not yet cleaned roller. In this way, the components of all rollers involved in the printing process can be cleaned effectively successively.
  • the particular advantage of this method is that only the components of an inking unit are used to clean the components of rollers involved in the printing process, which are also necessary for the printing operation.
  • the roller in contact with the doctoring chamber removes printing ink from the further roller during the cleaning operation.
  • the ink is then washed away by the solvent in the doctoring chamber from the roller associated therewith.
  • the solvent is circulated within the doctoring chamber. This can be done in a closed circuit in which only one pump is switched between the discharge and supply. In a preferred embodiment, however, a portion of the solvent is continuously sucked out of the doctor blade chamber via the discharge line and passed, for example, into a dirt tank. The withdrawn volume is replaced by unpolluted solvent, which is fed to the doctoring chamber via the supply lines.
  • the roller in direct connection with the doctoring chamber is kept in constant rotation so that its individual surface areas are periodically brought into contact with the solvent to achieve complete washing off of the ink from the roller.
  • rollers that are in communication with each other rotate at the same peripheral speeds to avoid material abrasion of the components of the rollers.
  • the rollers, between which there is a connection are preferably made stronger against the printing operation.
  • the direction of rotation of the rollers is advantageously reversed at least once.
  • a control device is preferably provided on the printing press, which also permits manual intervention in the cleaning operation if required.
  • the ink comes in the desired format on the substrate by first on the supply line 9 from a color tank the doctoring chamber 2 is supplied.
  • the surface of the anilox roller has not shown, small depressions, the so-called wells into which the ink passes.
  • the printing form 8 is applied to the printing roller 4 and is moved by a rotation of the pressure roller 4 in the direction of arrow B to the printing substrate 5.
  • the printing plate 8 is the adhering to her ink to the substrate 5 from.
  • FIG. 2 shows the same inking unit 1 in the cleaning operation.
  • the pressure roller 4 may be turned off in the manner shown by the impression cylinder 6.
  • the directions of rotation B, C of the pressure roller 4 and the anilox roller 3 can be reversed compared to the printing operation.
  • the cleaning process is now started by removing the printing ink from the doctoring chamber 2.
  • the doctor chamber 2 is filled via the supply line 9 with solvent. So that the solvent can absorb as much ink from the anilox roll, this is circulated by constantly solvent is removed via the discharge line 10 from the doctoring chamber 2 and this and / or new solvent via the supply line 9 of the doctoring chamber 2 is supplied.
  • the pressure roller 4 If the pressure roller 4 is kept in rotation, all areas of the printing form 8 come into contact with the anilox roller 3 in one revolution, the printing form 8 delivering a portion of the ink adhering to it.
  • the anilox roller 3 can be made closer to the pressure roller 4, as in the FIG. 2 can be seen. Due to the previously performed passage of the wells through the doctoring chamber 2, these are completely or partially filled with solvent, whereby the ink transfer is even improved.
  • the pressurized ink cups of the anilox roller 3 are cleaned in a new circulation within the doctoring chamber 2. Of the Cleaning operation of the inking unit 1 is maintained until no more ink is on the printing form 8.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Cleaning In Electrography (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (7)

  1. Procédé de nettoyage de composants (8) de cylindres participant au processus d'impression, qui restent pendant le processus de nettoyage dans la machine à imprimer et y sont chargés en solvants,
    - où l'encre est retirée de la chambre de racle (2), et la chambre de racle (2) est remplie de solvant, et
    - où pendant le nettoyage, une liaison fonctionnelle permettant pendant le nettoyage un transfert de solvant est maintenue entre la chambre de racle (2) et les composants (8) de cylindres (3, 4) participant au processus d'impression, qui sont destinés à être nettoyés, et
    - les cylindres (3, 4) tournent pendant le processus de nettoyage,
    - de sorte que le solvant est transféré de la chambre de racle (2) aux composants à nettoyer des cylindres (3, 4) participant au processus d'impression, y dilue l'encre et/ou détache des restes d'encre séchée qui, en raison de la rotation des cylindres (3, 4) sont ramenées à la chambre de racle,
    caractérisé en ce que
    des composants (8) de plusieurs cylindres (3, 4) sont nettoyés, où tout d'abord le cylindre (3) en liaison directe avec la chambre de racle est nettoyé, pendant que la liaison fonctionnelle avec le ou les autres cylindres (4) est interrompue, et qu'ensuite, successivement, la liaison fonctionnelle entre le cylindre (3) respectivement nettoyé et le cylindre suivant avoisinant (4) est rétablie.
  2. Procédé selon la revendication 1, caractérisé en ce que le solvant est amené à circuler continuellement à l'intérieur de la chambre de racle (2).
  3. Procédé selon la revendication 2, caractérisé en ce qu'une partie du solvant est aspirée par une conduite d'évacuation (10) de la chambre de racle (2), et en ce que par une conduite d'amenée (9), une partie du solvant évacué et/ou non sali est amenée à la chambre de racle (2).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le cylindre (3) en liaison directe avec la chambre de racle, pour son nettoyage, est maintenu en rotation continue et en contact continu avec le solvant se trouvant dans la chambre de racle (2).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les cylindres (3, 4), entre lesquels existe une liaison fonctionnelle, tournent aux mêmes vitesses de rotation.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'en fonctionnement de nettoyage, les cylindres (3, 4) entre lesquels existe une liaison fonctionnelle, sont plus fortement appliqués l'un à l'autre par rapport au fonctionnement d'impression.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le sens de rotation des cylindres (3, 4) est inversé au moins une fois.
EP03769386A 2002-11-06 2003-10-14 Nettoyage de cylindres dans des machines a imprimer Expired - Lifetime EP1567343B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10252013A DE10252013B4 (de) 2002-11-06 2002-11-06 Reinigung von Walzen in Druckmaschinen
DE10252013 2002-11-06
PCT/EP2003/011356 WO2004041540A1 (fr) 2002-11-06 2003-10-14 Nettoyage de cylindres dans des machines a imprimer

Publications (2)

Publication Number Publication Date
EP1567343A1 EP1567343A1 (fr) 2005-08-31
EP1567343B1 true EP1567343B1 (fr) 2011-03-16

Family

ID=32185356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03769386A Expired - Lifetime EP1567343B1 (fr) 2002-11-06 2003-10-14 Nettoyage de cylindres dans des machines a imprimer

Country Status (7)

Country Link
US (1) US20060032389A1 (fr)
EP (1) EP1567343B1 (fr)
AT (1) ATE501855T1 (fr)
AU (1) AU2003278080A1 (fr)
DE (2) DE10252013B4 (fr)
ES (1) ES2360094T3 (fr)
WO (1) WO2004041540A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0601855D0 (en) * 2006-01-30 2006-03-08 Rue Currency And Security Prin Intaglio plate wiping system
DE102009006268B4 (de) 2008-02-26 2017-12-14 Heidelberger Druckmaschinen Ag Verfahren zum Reinigen einer Mantelfläche eines Gummituchzylinders einer Nassoffsetdruckmaschine
US20140216502A1 (en) * 2013-02-05 2014-08-07 Ecochem Australia Pty Ltd System and method for automatically cleaning converters
DE102014003569A1 (de) * 2013-03-22 2014-09-25 Heidelberger Druckmaschinen Ag Verfahren zum Reinigen eines Anilox-Druckwerks

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548535A1 (de) * 1995-12-22 1997-07-03 Windmoeller & Hoelscher Verfahren und Vorrichtung zur Reinigung einer Rakelvorrichtung für ein Spülfarbwerk einer Rotationsdruckmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5213044A (en) * 1990-11-30 1993-05-25 Como Technologies, Incorporated Method and apparatus for use in printing
US5184556A (en) * 1992-02-18 1993-02-09 Paper Converting Machine Company Printing apparatus and method
US5367982A (en) 1993-02-25 1994-11-29 Howard W. DeMoore Automatic coating circulation and wash-up system for printing presses
DK83193A (da) * 1993-07-09 1995-01-10 Tresu A S Maskinfabriken Fremgangsmåde og apparat til rensning af overfladen på en valse
DE19516456C2 (de) * 1995-05-04 1999-04-15 Windmoeller & Hoelscher Vorrichtung zur Reinigung einer Rakelvorrichtung für ein Spülfarbwerk einer Rotationsdruckmaschine
US6435086B1 (en) * 1995-05-04 2002-08-20 Howard W. DeMoore Retractable inking/coating apparatus having ferris movement between printing units
DK173668B1 (da) * 1997-03-24 2001-06-05 Tresu As Fremgangsmåde samt pumpeunit til forsyning af et trykværk med farve og rensevæske
US6012391A (en) * 1997-05-02 2000-01-11 The Langston Corporation Ink/cleaning fluid delivery system for a chambered doctor blade
US5768993A (en) * 1997-05-09 1998-06-23 Bryce International, L.L.C. Inking system for offset printers
DE29918488U1 (de) * 1999-10-20 1999-12-30 MAN Roland Druckmaschinen AG, 63075 Offenbach Bogenrotationsdruckmaschine mit Druckeinheiten für den Mehrfarbendruck und wenigstens einer Beschichtungseinheit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548535A1 (de) * 1995-12-22 1997-07-03 Windmoeller & Hoelscher Verfahren und Vorrichtung zur Reinigung einer Rakelvorrichtung für ein Spülfarbwerk einer Rotationsdruckmaschine

Also Published As

Publication number Publication date
US20060032389A1 (en) 2006-02-16
ATE501855T1 (de) 2011-04-15
EP1567343A1 (fr) 2005-08-31
DE50313553D1 (de) 2011-04-28
DE10252013B4 (de) 2008-01-17
WO2004041540A1 (fr) 2004-05-21
ES2360094T3 (es) 2011-05-31
DE10252013A1 (de) 2004-05-27
AU2003278080A1 (en) 2004-06-07

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