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EP1441908A1 - Procede et dispositif de nettoyage de cylindres d'une presse a imprimer - Google Patents

Procede et dispositif de nettoyage de cylindres d'une presse a imprimer

Info

Publication number
EP1441908A1
EP1441908A1 EP02785362A EP02785362A EP1441908A1 EP 1441908 A1 EP1441908 A1 EP 1441908A1 EP 02785362 A EP02785362 A EP 02785362A EP 02785362 A EP02785362 A EP 02785362A EP 1441908 A1 EP1441908 A1 EP 1441908A1
Authority
EP
European Patent Office
Prior art keywords
roller
liquid
rollers
zones
printing machine
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
EP02785362A
Other languages
German (de)
English (en)
Other versions
EP1441908B1 (fr
Inventor
Herbert Stanka
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.)
Baldwin Germany GmbH
Original Assignee
Baldwin Germany GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7704464&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1441908(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Baldwin Germany GmbH filed Critical Baldwin Germany GmbH
Publication of EP1441908A1 publication Critical patent/EP1441908A1/fr
Application granted granted Critical
Publication of EP1441908B1 publication Critical patent/EP1441908B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • 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
    • B41P2235/26—Spraying devices

Definitions

  • the invention relates to a printing machine roller cleaning method and a printing machine roller cleaning device according to the patent claims.
  • the invention relates to a printing machine roller cleaning method for cleaning rotating rollers of a single drum roller, which contains a plurality of rollers lying one after the other, comprising at least one driven roller and at least one non-driven roller, which can only be driven by surface contact with an adjacent roller, in particular inking unit rollers of an inking unit for offset printing, wherein liquid for loosening dirt is mechanically applied to the outer surface of at least one of these rollers via discharge openings of a liquid application device which has a plurality of discharge openings distributed over the length of the roller, the liquid also passing from the outer surface to the outer surface of the rollers the rotation of the rollers is transmitted in the nip, and wherein the liquid together with the dirt loosened from it, in particular paint and paper dust, on another of the rollers through a Stripping device is stripped.
  • the invention relates to a printing machine roller cleaning device for cleaning rotating rollers of a single drum roller, which contains a plurality of rollers lying one after the other, comprising at least one driven roller and at least one non-driven roller, which can only be driven by surface contact with an adjacent roller Inking unit rollers of an inking unit for offset printing,
  • the cleaning device comprising a liquid application device with a plurality of dispensing openings distributed over a roller length, through which liquid for loosening dirt, in particular ink and paper dust, can be applied mechanically to the lateral surface of at least one of the rollers, the Liquid is transferred from the outer surface to the outer surface in the nip by the rotation of the rollers and the liquid together with the dirt loosened from it can be wiped off at another of the rollers by a wiping device.
  • Ink rollers of an inking unit in a printing unit for offset printing are moistened with liquid through a so-called spray tube for dissolving the ink, which is sprayed onto one of the rollers and knife-coated on another roller.
  • One or more of the inking unit rollers are driven, while other rollers are not driven, but are only rotated by the contact of their roller shell with the roller shell of an adjacent roller.
  • the cleaning process must be carried out in a short period of time in order to shorten the downtimes for the printing operation.
  • the liquid must therefore be transferred from the roller, which is moistened with the liquid from the spray tube, as quickly and evenly as possible to all the rollers of the roller train.
  • the object of the invention is to achieve a safe and easy cleaning of all rollers of a single drum roller in a short time in a simple and inexpensive manner.
  • Claim 1 is characterized in that the liquid jets are applied only to individual, corresponding to their width, narrow dampening zones of the at least one roller with the release of non-dampening zones therebetween, the liquid being applied to the at least one roller in such a small amount per unit time that the Liquid only flows laterally over a large number of roller revolutions over the entire width of the non-dampening zones, and in the case of at least some of the rollers of the single drum roller following the one roller, the liquid is initially also only transferred to the dampening zones of the next roller in the roller gap of the adjacent rollers with the release of non-dampening zones in between and only after several roller revolutions, the liquid then flows laterally over the entire width of the non-dampening zones, so that between the non-driven roller and de r there is always sufficient frictional resistance to take the rotation with it against the roller or rollers.
  • Claim 7 is characterized in that the discharge openings have an opening shape and a distance from one another in the longitudinal direction of the roller such that the liquid jets over their entire length and when they strike the At least one roller is at a distance from one another in the longitudinal direction of the roller and thus, according to its beam width, form individual dampening zones on the roller, leaving non-dampening zones in between, on which no liquid jets impinge.
  • the invention ensures that the liquid is quickly applied and distributed to all rollers up to and including the doctored roller.
  • the invention prevents overwetting of rollers and thereby slipping or stopping of non-driven rollers.
  • Standing rolls prevent the transfer of liquid to other rolls and thus cause a liquid jam in the roll winder, from which liquid is then squeezed out laterally.
  • the non-moistening zones ensure sufficient frictional adhesion between the rollers, through which all non-driven rollers are rotated by adjacent rollers and no rollers slip due to overwetting of the adjacent roller. Furthermore, rapid liquid transfer to all rollers is achieved.
  • the invention uses significantly fewer dispensing orifices or nozzles than the prior art.
  • Liquid can be solvents, detergents, detergents or water containing solvents, water with one or more additives which influence the printing process, pure water or any other liquid. Furthermore, the type of liquid can be changed during the washing process. For example, detergent or water containing solvent or such initially can be used to remove the ink from the rollers and then rinsed with clear water.
  • Rollerers also include printing press cylinders, but especially inking rollers.
  • Driven roller A roller can be driven by an electric motor, by a pneumatic motor or a hydraulic motor or by a drive connection from another roller or another cylinder of the printing press.
  • Non-driven roller is a roller that only rotates by being in contact with an adjacent roller and being rotated with it due to the frictional resistance.
  • Pulctiform cross section of the liquid jets means a jet with a small cross section and spaced apart from one another over the entire jet length from the nozzle to the point of impact on the roller, in contrast to a spray jet or a very wide flat jet, which already occurs when it hits the roller or before touch or mix with each other.
  • “Wiping device” for wiping off the liquid and any roller contamination that may have been removed from it This can be a doctor blade, a brush or a cloth or another element with which the liquid and any dirt that has been loosened from it can be removed from a roller.
  • FIG. 1 schematically shows a side view of a printing unit with an inking unit and a dampening unit
  • FIG. 2 schematically shows a top view of a particular embodiment of the invention
  • 3 shows a cross section along the plane III-III of a spray tube from FIG. 2.
  • Fig. 1 shows schematically and to scale a printing unit containing a plate cylinder 2, a blanket cylinder 3 contacting it, a printing cylinder 4 contacting it, an inking unit 6 and a dampening unit 8.
  • a dampening solution offset printing unit is a dampening solution offset printing unit.
  • the invention can also be used for a dry offset printing unit.
  • the printing unit can be part of a sheet-fed offset printing machine (printing on sheets) or a web-fed offset printing machine (printing on web-shaped printing material).
  • the invention can also be used for other types of printing presses (high pressure, gravure printing).
  • the printing material 10 (sheet or web) runs through the nip 11 between the blanket cylinder 3 and the printing roller 4.
  • the printing image is transferred from the plate cylinder 2 to the blanket cylinder and from there to the printing material 10.
  • the inking unit 6 can be of any type, which contains at least one inking roller driven by a motor and at least one non-driven inking roller, the latter being driven by the frictional resistance of its outer surface with the outer surface of another roller.
  • the inking unit 6 of FIG. 1 contains, as an example, an ink fountain 14 and a roller train of ink rollers 16-27, of which one roller 16 is a so-called duct roller for receiving ink from the ink fountain 14 and of which at least one roller is not driven by one shown electric motor or another motor drive and of which one or more rollers have no motor drive, but are only driven by contact of their roller shell with an adjacent roller of this adjacent roller, which can also be a roller without a motor drive.
  • a squeegee 30 can be placed on one of the inking rollers, which is removed from the doctor roller 16, in order to scrape off ink and other soiling from this roller, preferably into a receiving trough 32.
  • the dampening unit 8 contains a dampening solution trough 36, from which dampening solution liquid is applied to the peripheral surface of the plate cylinder 2 via a train of dampening rollers 38, 39, 40 and 42 to form ink-repellent areas in accordance with the print image to be printed.
  • a transfer roller 44 or more transfer rollers can be provided, which on the one hand in circumferential contact with a dampening roller, e.g. B. dampening roller 42, and on the other hand in circumferential contact with an inking roller, for example the inking rollers 26 and 27.
  • a dampening roller e.g. B. dampening roller 42
  • an inking roller for example the inking rollers 26 and 27.
  • a printing unit roller cleaning device 46 for cleaning rotating rollers of a single drum roller, of which at least one roller can be driven by a motor, for example the inking roller 17 after the duct roller 16, and of which at least one roller, e.g. 19, can only be driven by contact of its outer surface with the outer surface of one of the other rollers, and of which at least one roller is an ink roller for ink transfer.
  • a motor for example the inking roller 17 after the duct roller 16
  • at least one roller e.g. 19
  • at least one roller e.g. 19
  • at least one roller is an ink roller for ink transfer.
  • all inking rollers 16-27 of the inking unit 6 and the transfer roller 44 are to be washed.
  • the cleaning device 46 contains a liquid application device 48.
  • This contains a distribution channel 49 with a plurality of liquid discharge openings 50, which run along a first of the rollers, e.g. B. the inking roller 18, which may be a motor-driven or a motor-driven roller, positioned or positionable at a distance from it to apply liquid to the Apply lateral surface of the roller 18.
  • This liquid is transferred by rotation of this roller 18 to the other rollers in contact with it and from these rollers also to other rollers in contact with them.
  • the discharge openings 50 can be bores or nozzles inserted in bores.
  • Liquid can be solvents, detergents, detergents or water containing solvents, water with one or more additives which influence the printing process, pure water or any other liquid. Furthermore, the type of liquid can be changed during the washing process. For example, detergent or water containing solvent or such initially can be used to remove the ink from the rollers and then rinsed with clear water.
  • the liquid discharge openings 50 are small in size and shape such that liquid can only be applied to discrete longitudinal humidification zones 52 of this first roller 18, leaving longitudinal non-humidification zones 54 therebetween on this first roller 18.
  • the width of a longitudinal humidification zone 52 is equal to the width of a liquid jet.
  • the cleaning device 46 contains a liquid supply device 56 for supplying liquid to the discharge openings 50 and from there onto the outer surface of the first roller 18 in such a quantity of liquid that the rotation of the rollers causes the liquid from the discrete dampening zones 52 of the first roller 18 is transferred to the outer surface of the further roller resting on its outer surface, in the present example the rollers 17 and 19.
  • the liquid is transferred from the longitudinal dampening zones 52 of the first roller 18 to longitudinal dampening zones of the at least one further roller 17 and 19 lying opposite them, leaving non-dampening longitudinal zones thereon.
  • the Transfer liquid to discrete longitudinal humidification zones 52 from roll to roll to further rolls in the present example to rolls 19-27.
  • the liquid is distributed more and more to the non-wetting longitudinal zones 54 with each roller revolution and thus to the entire length of all rollers 16-27 and 44 to be cleaned.
  • the amount of liquid per unit time of the discharge openings 50 can be constant or variable.
  • the liquid jets should hit the roller "softly". Therefore, they are preferably applied to the surface of the roll shell in the form of an arcuate jet. 1 shows the liquid jets 51 only schematically.
  • Fig. 1 shows on the left an application device 48, the liquid jets 51 of which are directed onto the roller 18, and on the right a further, alternatively or additionally usable application device 48, the liquid jets 51 of which are directed into the gusset between two rollers, e.g. rollers 17 and 18.
  • the liquid discharge openings 50 are designed to generate liquid jets 51 which have a punctiform cross section from the discharge openings 50 to the roller 17 or 18.
  • the application device 48 is preferably provided at its lower end with a collecting trough 64 for collecting dripping washing liquid, which has an outlet 66.
  • Fresh water from a fresh water connection 74 can be fed to a detergent container 70 via a valve 72. If desired, an automatic feed device for detergent or solvent 76 can be provided in the detergent container 70.
  • a line 78 which contains a pump 79 and a valve 80, goes from the detergent container 70 to the distribution channel 49 of the liquid application device 48.
  • a fresh water supply line 92 which contains a valve 93, can be provided from the fresh water connection 74 to the distribution channel 82. In this way, detergent-containing or solvent-containing washing liquid or fresh water can be supplied via all dispensing openings 50.
  • liquid supply device 56 only the supply of detergent-containing or solvent-containing washing liquid or only the supply of fresh water can be provided.
  • the valves and pumps are controlled by an electronic control device 94, preferably as a function of a higher-level machine operating program of the printing press.
  • the invention is not limited to offset printing machines, but can also be used for cleaning ink rollers in other types of printing machines.
  • a doctor blade 30 it is also possible to use another dirt-wiping element, for example a cloth or a brush, which is placed against one of the rollers to be cleaned in order to wipe off the paint and washing liquid therefrom.
  • another dirt-wiping element for example a cloth or a brush, which is placed against one of the rollers to be cleaned in order to wipe off the paint and washing liquid therefrom.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif de nettoyage de cylindres d'un groupe d'impression. Selon l'invention, du liquide lessiviel n'est appliqué que sur des zones longitudinales (52) d'humidification discrètes d'un cylindre à nettoyer, en laissant des zones longitudinales (54) intermédiaires libres d'humidification. Pendant la rotation des cylindres, le liquide lessiviel coule sur les zones longitudinales (54) non humidifiées.
EP02785362A 2001-11-06 2002-11-05 Procede et dispositif de nettoyage de cylindres d'une presse a imprimer Expired - Lifetime EP1441908B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10153968 2001-11-06
DE10153968A DE10153968A1 (de) 2001-11-06 2001-11-06 Druckmaschinenwalzen-Reinigungsverfahren und -vorrichtung
PCT/EP2002/012318 WO2003039874A1 (fr) 2001-11-06 2002-11-05 Procede et dispositif de nettoyage de cylindres d'une presse a imprimer

Publications (2)

Publication Number Publication Date
EP1441908A1 true EP1441908A1 (fr) 2004-08-04
EP1441908B1 EP1441908B1 (fr) 2009-10-14

Family

ID=7704464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02785362A Expired - Lifetime EP1441908B1 (fr) 2001-11-06 2002-11-05 Procede et dispositif de nettoyage de cylindres d'une presse a imprimer

Country Status (6)

Country Link
US (1) US20040050277A1 (fr)
EP (1) EP1441908B1 (fr)
JP (1) JP2004521793A (fr)
CN (1) CN1592685A (fr)
DE (2) DE10153968A1 (fr)
WO (1) WO2003039874A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005038258A1 (de) * 2005-08-12 2007-02-22 Baldwin Germany Gmbh Farbwalzenrakelvorrichtung und Auskleidung für eine Rakelwanne hiervon
US7546803B2 (en) * 2006-01-30 2009-06-16 Toppan Printing Co., Ltd. Letterpress printing machine
CN101195298B (zh) * 2006-12-07 2011-03-16 海德堡印刷机械股份公司 具有用于输墨装置的洗涤装置的印刷机和去除油墨的方法
DE202007018741U1 (de) 2007-12-08 2009-04-02 Hartmut Lehmann Metallbau Gmbh Vorrichtung zur Reinigung von Druckpapier
DE102008062027B4 (de) * 2008-01-31 2018-05-17 Heidelberger Druckmaschinen Ag Druckmaschine mit einem Anilox-Farbwerk mit zugehöriger Wascheinrichtung
DE202010012485U1 (de) 2010-09-10 2010-12-30 Detho, Farooq Verarbeitungsmaschine mit einer Reinigungsvorrichtung
DE102013213059A1 (de) 2012-07-06 2014-01-09 Koenig & Bauer Aktiengesellschaft Vorrichtung und Verfahren zum Aufbringen und Dosieren von Reinigungsflüssigkeit
JP2016083863A (ja) * 2014-10-27 2016-05-19 株式会社小森コーポレーション 印刷機の洗浄装置
EP3882033B1 (fr) 2020-03-19 2022-03-30 Heidelberger Druckmaschinen AG Procédé de lavage d'un mécanisme d'encrage d'une machine d'impression
CN111391509B (zh) * 2020-04-20 2024-10-08 深圳劲鑫科技股份有限公司 一种喷头擦拭装置及喷印设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303652A (en) * 1992-02-13 1994-04-19 Baldwin Technology Corporation Spray blanket cleaning system
DE4424581C1 (de) * 1994-07-13 1995-10-19 Roland Man Druckmasch Vorrichtung zum Entfernen von Farbe aus einem Farbwerk
DE29703074U1 (de) * 1997-02-21 1997-04-30 Maschinenfabrik Goebel Gmbh, 64293 Darmstadt Einrichtung zum Reinigen
DE19711545B4 (de) * 1997-03-20 2005-08-04 Heidelberger Druckmaschinen Ag Farbwerk für Rotationsdruckmaschinen
US5868073A (en) * 1997-04-11 1999-02-09 Komori Corporation Cleaning apparatus for web offset printing press
DE19816660A1 (de) * 1997-09-17 1999-03-18 Heidelberger Druckmasch Ag Farbwerk für Rotationsdruckmaschinen
DE10000903A1 (de) * 1999-02-05 2000-08-10 Heidelberger Druckmasch Ag Verfahren zum Betrieb einer Druckmaschine und Druckmaschine zur Durchführung des Verfahrens
DE19936144B4 (de) * 1999-07-31 2006-09-21 Koenig & Bauer Ag Einrichtung zum Aufbringen von Flüssigkeit
IT1321267B1 (it) * 2000-05-19 2004-01-08 Marco Corti Metodo e dispositivo per la pulitura dei cilindri in caucciu' dellemacchine da stampa, particolarmente del tipo cosiddette a bobina.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03039874A1 *

Also Published As

Publication number Publication date
EP1441908B1 (fr) 2009-10-14
CN1592685A (zh) 2005-03-09
JP2004521793A (ja) 2004-07-22
DE10153968A1 (de) 2003-05-22
US20040050277A1 (en) 2004-03-18
DE50213929D1 (de) 2009-11-26
WO2003039874A1 (fr) 2003-05-15

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