EP0792743B1 - Method of operating a printing machine including a cleanig device - Google Patents

Method of operating a printing machine including a cleanig device Download PDF

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Publication number
EP0792743B1
EP0792743B1 EP97102018A EP97102018A EP0792743B1 EP 0792743 B1 EP0792743 B1 EP 0792743B1 EP 97102018 A EP97102018 A EP 97102018A EP 97102018 A EP97102018 A EP 97102018A EP 0792743 B1 EP0792743 B1 EP 0792743B1
Authority
EP
European Patent Office
Prior art keywords
washing
printing machine
roller
printing press
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.)
Expired - Lifetime
Application number
EP97102018A
Other languages
German (de)
French (fr)
Other versions
EP0792743A1 (en
Inventor
Claus Simeth
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 EP0792743A1 publication Critical patent/EP0792743A1/en
Application granted granted Critical
Publication of EP0792743B1 publication Critical patent/EP0792743B1/en
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
    • 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
    • B41P2235/20—Wiping devices
    • B41P2235/22—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
    • B41P2235/20—Wiping devices
    • B41P2235/23—Brushes
    • 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
    • B41P2235/20—Wiping devices
    • B41P2235/24—Wiping devices using rolls of cleaning cloth

Definitions

  • the invention relates to a method for operating a Printing machine, in particular an offset rotary printing machine, for washing a cylinder of a printing unit a washing device with a rotatably driven Washer roller is provided which receiving a washing liquid Has reference.
  • Printing machines equipped with a washing device are i.a. from DE-OS 17 61 111 and DE-PSen 11 50 098 and 11 24 974 known.
  • the washers have a rotating drivable washing roller, the surface of which with a Cover for washing liquid, for example with covered with a brush, a felt or a cleaning cloth is.
  • a cylinder e.g. the blanket cylinder
  • the washing roller is attached to the rotating cylinder employed, usually rotating in opposite directions driven and wetted with washing liquid. By the interaction of washing liquid and washing roller the deposits on the cylinder surface loosened and away.
  • the invention has for its object this disadvantage to eliminate and specify a process that is optimal Sequence of the first wash after one Business interruption enabled.
  • this object is achieved in that the Washing device after each shutdown automatically when the press starts up is steered into a pre-wet phase, in which your Washing roller in one of those assigned to the washing device Cylinder lifted position rotated and is moistened with detergent and / or water.
  • the inventive method is the washing roller after a Interruption of operation immediately rewetted. There usually not at the same time when starting up the printing press there must be enough washing afterwards Time for the washing liquid to act on the Cover the washing roller, so that this is the next wash the appropriate moisture content and the required Has suppleness.
  • the main switch of the printing machine can be used. There the main switch in the event of any lengthy downtime can be switched into the exhibition by using simple means to achieve the desired inevitability.
  • the method according to the invention is equally suitable for washing devices in which the washing roller with the help is sprayed with nozzles with washing liquid, and those where the washing roller is moistened by an immersion roller becomes.

Landscapes

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

Abstract

A method and device for washing the printing cylinder of a printing machine, especially an offset rotary printing machine, in which a washing device with a washing roller with a covering capable of absorbing liquid is premoistened prior to performing the first washing operation after a long standstill period of the printing machine. As a result, the efficacy of the first washing operation after an interruption to operation of the printing machine is improved, the wear on the covering of the washing roller is reduced, and damage to the printing cylinder from a dry covering of the washing roller is avoided.

Description

Die Erfindung betrifft ein Verfahren zum Betrieb einer Druckmaschine, insbesondere einer Offset-Rotationsdruckmaschine, bei der zum Waschen eines Zylinders eines Druckwerks eine Waschvorrichtung mit einer drehend antreibbaren Waschwalze vorgesehen ist, die einen Waschflüssigkeit aufnehmenden Bezug aufweist.The invention relates to a method for operating a Printing machine, in particular an offset rotary printing machine, for washing a cylinder of a printing unit a washing device with a rotatably driven Washer roller is provided which receiving a washing liquid Has reference.

Mit einer Waschvorrichtung ausgerüstete Druckmaschinen sind u.a. aus der DE-OS 17 61 111 und den DE-PSen 11 50 098 und 11 24 974 bekannt. Die Waschvorrichtungen haben eine drehend antreibbare Waschwalze, deren Oberfläche mit einem Waschflüssigkeit aufnehmenden Bezug, beispielsweise mit einer Bürste, einem Filz oder einem Reinigungstuch überzogen ist. Zum Reinigen eines Zylinders, z.B. des Gummituchzylinders, wird die Waschwalze an den sich drehenden Zylinder angestellt, wobei sie in der Regel gegenläufig drehend angetrieben und mit Waschflüssigkeit benetzt wird. Durch das Zusammenwirken von Waschflüssigkeit und Waschwalze werden die Ablagerungen auf der Zylinderoberfläche gelöst und entfernt. Um ein optimales Waschergebnis in kurzer Zeit zu erzielen, und andererseits eine Übernässung der Zylinderoberfläche zu vermeiden und den Verbrauch an Waschmittel klein zu halten, ist eine genaue Dosierung der beim Waschvorgang zugeführten Waschflüssigkeitsmenge erforderlich. Es hat sich nun in der Praxis gezeigt, daß bei längeren Stillstandszeiten der Druckmaschine, z.B. an Wochenenden oder über Nacht, durch Verdunstung von Waschflüssigkeit der Bezug der Waschwalze trocknet. Dies hat zur Folge, daß bei dem ersten Waschvorgang nach der erneuten Inbetriebnahme der Druckmaschine die Waschwalze nicht ausreichend mit Waschflüssigkeit benetzt ist. Der zunächst noch trockene Bezug der Waschwalze kann die erst mit Beginn des Waschvorgangs zugeführte Waschflüssigkeit nicht so schnell aufnehmen, wodurch der Waschvorgang beeinträchtigt wird. Auch sind der Bezugsstoff oder die Borsten der Waschwalze in trockenem Zustand vergleichsweise steif und daher einem stärkeren Verschleiß ausgesetzt. Ebenso kann es hierdurch zu einer Beschädigung des zu reinigenden Gummituchs kommen.Printing machines equipped with a washing device are i.a. from DE-OS 17 61 111 and DE-PSen 11 50 098 and 11 24 974 known. The washers have a rotating drivable washing roller, the surface of which with a Cover for washing liquid, for example with covered with a brush, a felt or a cleaning cloth is. For cleaning a cylinder, e.g. the blanket cylinder, the washing roller is attached to the rotating cylinder employed, usually rotating in opposite directions driven and wetted with washing liquid. By the interaction of washing liquid and washing roller the deposits on the cylinder surface loosened and away. To achieve an optimal washing result in a short time achieve, and on the other hand an overwetting of the cylinder surface to avoid and the consumption of detergent Keeping it small is an exact dosage during the washing process amount of washing liquid supplied required. It has now been shown in practice that with longer downtimes the printing press, e.g. on weekends or overnight, by evaporation of washing liquid The washing drum cover dries. This has the consequence that at the first wash after restarting the washing machine is not sufficient with the printing machine Washer fluid is wetted. The one that is still dry at first The washing roller can only be drawn in at the beginning of the washing process do not soak up the supplied washing liquid as quickly, which affects the washing process. Also are the cover fabric or the bristles of the washing roller in dry condition comparatively stiff and therefore one exposed to greater wear. It can also do this damage to the rubber blanket to be cleaned come.

Der Erfindung liegt die Aufgabe zugrunde, diesen Nachteil zu beseitigen und ein Verfahren anzugeben, das einen optimalen Ablauf auch des ersten Waschvorgangs nach einer Betriebsunterbrechung ermöglicht.The invention has for its object this disadvantage to eliminate and specify a process that is optimal Sequence of the first wash after one Business interruption enabled.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Waschvorrichtung nach einer Betriebsunterbrechung jeweils gleichzeitig mit dem Anfahren der Druckmaschine automatisch in eine Vorfeuchtphase gesteuert wird, in der ihre Waschwalze in einer von den der Waschvorrichtung zugeordneten Zylinder abgehobenen Stellung in Drehung versetzt und mit Waschmittel und/oder Wasser befeuchtet wird. Nach dem erfindungsgemäßen Verfahren wird die Waschwalze nach einer Betriebsunterbrechung jeweils sofort neu befeuchtet. Da beim Anfahren der Druckmaschine in der Regel nicht zugleich ein Waschvorgang durchzuführen ist, verbleibt danach genügend Zeit, für die Einwirkung der Waschflüssigkeit auf den Bezug der Waschwalze, so daß dieser bei dem nächsten Waschvorgang den geeigneten Feuchtigkeitsgehalt und die erforderliche Geschmeidigkeit hat.According to the invention this object is achieved in that the Washing device after each shutdown automatically when the press starts up is steered into a pre-wet phase, in which your Washing roller in one of those assigned to the washing device Cylinder lifted position rotated and is moistened with detergent and / or water. After this The inventive method is the washing roller after a Interruption of operation immediately rewetted. There usually not at the same time when starting up the printing press there must be enough washing afterwards Time for the washing liquid to act on the Cover the washing roller, so that this is the next wash the appropriate moisture content and the required Has suppleness.

Zur Einschaltung der Vorfeuchtphase kann erfindungsgemäß der Hauptschalter der Druckmaschine verwendet werden. Da der Hauptschalter bei jeder längeren Betriebsunterbrechung in die Ausstellung geschaltet wird, läßt sich hierdurch mit einfachen Mitteln die gewünschte Zwangsläufigkeit erreichen. Zur Festlegung der Dauer der Vorfeuchtphase kann erfindungsgemäß ein Zeitglied, beispielsweise ein Zeitschalter verwendet werden, der durch das Einschalten des Hauptschalters aktiviert wird und nach der gewünschten Zeitdauer die Vorfeuchtphase ausschaltet.To switch on the pre-humidification phase, according to the invention the main switch of the printing machine can be used. There the main switch in the event of any lengthy downtime can be switched into the exhibition by using simple means to achieve the desired inevitability. Can determine the duration of the pre-wet phase according to the invention a timer, for example a timer be used by switching on the Main switch is activated and after the desired The pre-wet phase switches off.

Das erfindungsgemäße Verfahren eignet sich gleichermaßen für Waschvorrichtungen, bei denen die Waschwalze mit Hilfe von Düsen mit Waschflüssigkeit besprüht wird, und solchen, bei denen die Waschwalze über eine Tauchwalze befeuchtet wird.The method according to the invention is equally suitable for washing devices in which the washing roller with the help is sprayed with nozzles with washing liquid, and those where the washing roller is moistened by an immersion roller becomes.

Claims (3)

  1. Process for operating a printing press, particularly a rotary offset printing press, in which, for washing a cylinder of a printing unit, a washing device with a washing roller is provided, which has a cover receiving washing liquid, characterized in that the washing device after an interruption of operation in each case simultaneously with the running up of the printing press is automatically controlled in a pre-damping phase in which its washing roller is set into rotation in a position lifted away from the cylinder coordinated to the washing device and is damped with washing agent and/or water.
  2. Process according to Claim 1, characterized in that for automatic control of the pre-damping phase, the switching on process of the main switch of the printing press is used.
  3. Process according to one of the preceding Claims, characterized in that the length of the pre-damping phase is controlled with the aid of a timing member.
EP97102018A 1996-02-23 1997-02-08 Method of operating a printing machine including a cleanig device Expired - Lifetime EP0792743B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19606768A DE19606768C1 (en) 1996-02-23 1996-02-23 Method of operating offset rotary printing machine
DE19606768 1996-02-23

Publications (2)

Publication Number Publication Date
EP0792743A1 EP0792743A1 (en) 1997-09-03
EP0792743B1 true EP0792743B1 (en) 1998-12-02

Family

ID=7786212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102018A Expired - Lifetime EP0792743B1 (en) 1996-02-23 1997-02-08 Method of operating a printing machine including a cleanig device

Country Status (5)

Country Link
US (1) US5823113A (en)
EP (1) EP0792743B1 (en)
JP (1) JP3002148B2 (en)
AT (1) ATE173975T1 (en)
DE (2) DE19606768C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005082626A1 (en) * 2004-02-20 2005-09-09 Betz Technologies Gmbh Device for cleaning the surface of a cylinder
JP5752318B2 (en) 2011-04-29 2015-07-22 ヒューレット−パッカード デベロップメント カンパニー エル．ピー．Ｈｅｗｌｅｔｔ‐Ｐａｃｋａｒｄ Ｄｅｖｅｌｏｐｍｅｎｔ Ｃｏｍｐａｎｙ， Ｌ．Ｐ． Apparatus, printer, and method for removing material from a printer surface

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731916A (en) * 1956-01-24 Device for cleaning cylinders
US3049997A (en) * 1960-03-04 1962-08-21 Elmer C Grembecki Blanket roller cleaning device
DE1150098B (en) * 1960-03-04 1963-06-12 Elmer C Grembecki Device on a printing machine for cleaning the surface of a printing cylinder
US3120805A (en) * 1960-11-19 1964-02-11 Roland Offsetmaschf Cleaning device for the blanket cylinders in offset printing machines
DE1124974B (en) * 1960-11-19 1962-03-08 Roland Offsetmaschf Cleaning device for the blanket cylinder of offset printing machines
US3309993A (en) * 1965-01-26 1967-03-21 Oxy Dry Internat Ltd Printing cylinder cleaner
GB1169668A (en) * 1967-04-20 1969-11-05 Akerlund & Rausing Ab Improvements in and relating to Means for Washing a Cylinder in a Printing Press
US3720805A (en) * 1968-12-26 1973-03-13 Johnson Matthey & Mallory Ltd Apparatus for the manufacture of composite electrical contacts
US4015307A (en) * 1969-08-25 1977-04-05 Oxy-Dry Sprayer Corporation Apparatus for cleaning rotating cylindrical surfaces
US4270450A (en) * 1979-09-10 1981-06-02 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Arrangement for washing cylinders on printing presses
GB2076339A (en) * 1980-05-21 1981-12-02 Vickers Ltd Removing foreign particles during printing
JPS57120444A (en) * 1981-01-21 1982-07-27 Dainippon Screen Mfg Co Ltd Removing device for stain on surface of printing plate
JPH0657451B2 (en) * 1985-12-06 1994-08-03 藤沢薬品工業株式会社 Roll cleaning device for tablet printing machine
JPS6456550A (en) * 1987-08-27 1989-03-03 Ricoh Kk Cleaning device of printer
FR2648393B2 (en) * 1988-07-07 1991-09-20 Sarda Jean IMPROVEMENTS TO CLEANING AND PROCESSING PLANTS FOR THE MAINTENANCE OF PRINTING PRESSES
US5109770A (en) * 1989-09-22 1992-05-05 Oxy-Dry Corporation Printing cylinder cleaning system
US5303652A (en) * 1992-02-13 1994-04-19 Baldwin Technology Corporation Spray blanket cleaning system
US5257578A (en) * 1993-01-12 1993-11-02 Heidelberger Druckmaschinen Ag Device for automatically cleaning blanket cylinders in a offset printing press
DE4434052A1 (en) * 1994-09-23 1996-03-28 Bvs Gmbh Car wash control

Also Published As

Publication number Publication date
JPH09234858A (en) 1997-09-09
EP0792743A1 (en) 1997-09-03
ATE173975T1 (en) 1998-12-15
JP3002148B2 (en) 2000-01-24
DE59700039D1 (en) 1999-01-14
US5823113A (en) 1998-10-20
DE19606768C1 (en) 1997-04-17

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