EP0839652B1 - Method for cleaning cylinders and rollers in a printing machine - Google Patents

Method for cleaning cylinders and rollers in a printing machine Download PDF

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Publication number
EP0839652B1
EP0839652B1 EP97117937A EP97117937A EP0839652B1 EP 0839652 B1 EP0839652 B1 EP 0839652B1 EP 97117937 A EP97117937 A EP 97117937A EP 97117937 A EP97117937 A EP 97117937A EP 0839652 B1 EP0839652 B1 EP 0839652B1
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EP
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Prior art keywords
roller
damping
unit
ductor
driven
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EP97117937A
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German (de)
French (fr)
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EP0839652A2 (en
EP0839652A3 (en
Inventor
Joachim Dipl.-Phys. Müller
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Manroland AG
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MAN Roland Druckmaschinen AG
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Publication of EP0839652A3 publication Critical patent/EP0839652A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F35/00Cleaning arrangements or devices

Definitions

  • the invention relates to a method for cleaning cylinders and rollers in one Printing machine, preferably an offset printing machine or an inline coating unit according to the preamble of the respective main claim.
  • DE 195 01 806 A1 describes a method for cleaning cylinders and rollers known, after which the dampening roller roller is cleaned.
  • the dampening roller is used for this integrated into the inking unit roller by means of a bridge roller.
  • the The dampening roller can be turned on or off by the plate cylinder.
  • a dampening unit for an offset printing press is known from EP 0 450 155 B1 which a dampening roller to the plate cylinder and a dampening roller (Immersion roller) is mounted on and off.
  • the dampening roller is removed from the plate cylinder driven, i.e. when switched on and off, it runs at its peripheral speed.
  • the dampening roller immersed in a dampening solution container has its own, speed-controllable drive, so that according to the dampening solution requirement the printing form at different machine speeds Amount of dampening solution can be supplied.
  • the painting device has a scoop roller and one with an applicator roller in contact with a forme cylinder. Furthermore, the scoop roller is one Dosing roller assigned. The scoop roller is via a gear transmission with a separate one speed-controllable and rotational direction switchable electric drive coupled.
  • the rollers can in particular by the cleaning fluid reducing the coefficient of friction, the color or varnish to be processed, the roller pressure and or the material pairing even the external friction of at least two rollers in contact with each other Reduce contact areas so that the transferable circumferential force is close to zero. I.e. in extreme cases, at least one roller can "stop" or stick-slip movements occur on the roller surface.
  • a stationary roller acts as if Scraper element (analogous to a squeegee) and scrapes the detergent ink / lacquer emulsion from the neighboring roller.
  • the emulsion can be placed in the dampening solution tank or get into a paint storage container and the liquid medium present there contaminate. Liquid media contaminated in this way must be replaced what additional effort is required.
  • the object of the invention is therefore to provide a method that the disadvantages mentioned avoids that in the cleaning mode of rollers and cylinders the external friction is maintained so that the transferable peripheral force drops is avoided in the roller pairing.
  • a printing unit of a preferably offset printing machine it is provided to clean the plate cylinder and the dampening unit roller in addition to the inking unit roller train.
  • the inking unit roller, the plate cylinder and the dampening unit roller can be included in the cleaning process individually, in groups or together.
  • the dampening roller unit is integrated into the inking unit roller via a bridge roller.
  • the dampening roller of the dampening unit roller can also be placed on the plate cylinder.
  • a vegetable cleaning agent and / or water is used as the cleaning fluid.
  • the dampening solution has been removed from the dampening solution container or has been lowered so far that the dampening roller no longer dips into the dampening solution.
  • the dampening duct is coupled to the separate speed-controllable drive and is driven for a limited time at an excessive speed in relation to a value customary in printing operation.
  • the machine speed of the printing unit is set to the speed at which the dampening roller driven by the plate cylinder has a synchronous peripheral speed to the separately driven dampening roller.
  • the working process is not limited to a single drum roller in a printing unit. Rather, this is also suitable for coating units which, in addition to the forme cylinder, have at least one application roller and an adjacent duct roller (two-roller mill).
  • the metering roller can additionally be assigned a metering roller, or further transfer rollers can be arranged between the application roller and the doctor roller.
  • a spray tube is assigned to the roll nip for the application of cleaning fluid.
  • the duct roller is also coupled to a separate speed-controllable motor drive.
  • the application roller is coupled to the forme cylinder via a gear drive.
  • the speed of the ductor roller is driven to a value that is limited in time, analogous to the dampening unit operation.
  • the applicator roller is driven by the forme cylinder and this with synchronous peripheral speed.
  • the advantage of these designs is that a noticeable improvement in the result of roller cleaning is achieved by the rollers being cleaned more quickly in the dampening unit roller train or in the coating unit.
  • the plate cylinder can also be integrated into the cleaning process in that the dampening roller or the lacquer roller is in contact with the plate cylinder during the cleaning process. The "standstill" of a roller is avoided and thus the cleaning fluid consumption and the cleaning time are reduced. Soiling of the storage container and the associated cleaning are also eliminated.
  • the printing unit essentially consists of an inking roller 4, a dampening roller 3, a plate cylinder 1 and a blanket cylinder 2.
  • the inking roller 4 is assigned a spray device which can be operated with a vegetable cleaning agent and / or water.
  • the plate cylinder 1 is assigned to the inking roller train 4, inking rollers 13 and a dampening roller roller 3 belonging to the dampening roller train 3 can be switched on and off.
  • the dampening unit roller train 3 can be coupled to the inking unit roller train 4 via a bridge roller 5. Further components of the printing unit will not be discussed here.
  • a doctor device 11 is arranged on one of the last rollers of the inking unit roller train 4, which is received in a swivel joint and can be pivoted to the roller by means of an actuating device 10 for switching it on and off.
  • the actuating device 10 and the spray device can be controlled by means of a control station.
  • the dampening unit roller train 3 has a dampening roller 7 which is coupled to a separate, speed-controllable drive and which is immersed in a dampening agent reservoir 9.
  • the dampening roller 7 is in contact with a metering roller 8.
  • the bridge roller 5 is assigned to the dampening roller 6 as a rider roller.
  • the dampening roller can have an additional rider roller 12 wear, which is arranged adjacent to the bridge roller 5.
  • the dampening roller For the operating mode "cleaning of rollers "is cleaned after the inking unit roller 4, on the dampening roller 6 resting bridge roller 5 coupled to the inking unit roller 4.
  • the dampening unit roller 3 is thus integrated into the inking unit roller 4.
  • the drive of the dampening duct 7 is activated when the spraying device and doctor blade device are activated, and the dampening duct 7 is operated for a limited time at an excessive peripheral speed in relation to a value customary in printing operation.
  • the machine speed of the printing unit is set to a defined speed at which the peripheral speeds of the dampening roller 6 driven by the plate cylinder 1 are synchronized with the dampening roller 7. It has been found that, for the cleaning process, favorable synchronous speeds in a range from 3000 to 8000 sheets per hour can be achieved.
  • the metering roller 8 adjacent to the dampening roller 7 is driven by the damping roller 7 by means of friction.
  • dampening roller 3 If the dampening roller 3 is designed with an additional rider roller 12 resting on the dampening roller 6, it can be pivoted from its position 12 in the direction of the metering roller 8 in such a way that the rider roller 12 then assumes the position 12 'and with the dampening roller 6 and Metering roller 8 is in contact. This roller position 12 'additionally increases the transferable peripheral force.
  • the wet doctor 7 is driven as already described.
  • An application roller 15 is with a forme cylinder 14 in contact.
  • the duct roller 17 carries a in this training Metering roller 18.
  • the nip, formed from transfer roller 16 and duct roller 17, is associated with a spray tube for cleaning fluid (not shown).
  • the duct roller 17 is with a separate, speed-controllable drive coupled and the application roller 15 is with the drive of the forme cylinder 14 positively engaged for cleaning the painting unit cleaning fluid is applied to the spray tube and the duct roller 17 limited in time driven by the drive to a speed value that is above the usual Production paint value is.
  • the peripheral speed of the application roller 15 controlled by the forme cylinder 14 in such a way that duct roller 17 and applicator roller 15 can be operated with synchronous peripheral speed.

Description

Die Erfindung betrifft ein Verfahren zur Reinigung von Zylindern und Walzen in einer Druckmaschine, vorzugsweise einer Offsetdruckmaschine oder einem Inline-Lackierwerk nach dem Oberbegriff des jeweiligen Hauptanspruches.The invention relates to a method for cleaning cylinders and rollers in one Printing machine, preferably an offset printing machine or an inline coating unit according to the preamble of the respective main claim.

Aus der DE 195 01 806 A1 ist ein Verfahren zur Reinigung von Zylindern und Walzen bekannt, nach dem auch der Feuchtwerkswalzenzug gereinigt wird. Dazu wird der Feuchtwerkswalzenzug mittels einer Brückenwalze in den Farbwerkswalzenzug integriert. Die Feuchtauftragwalze kann dabei vom Plattenzylinder an- oder abgestellt werden.DE 195 01 806 A1 describes a method for cleaning cylinders and rollers known, after which the dampening roller roller is cleaned. The dampening roller is used for this integrated into the inking unit roller by means of a bridge roller. The The dampening roller can be turned on or off by the plate cylinder.

Aus der EP 0 450 155 B1 ist ein Feuchtwerk für eine Offsetdruckmaschine bekannt, bei welchem eine Feuchtauftragswalze zum Plattenzylinder und zu einem Feuchtduktor (Tauchwalze) an- und abstellbar gelagert ist. Die Feuchtauftragwalze wird vom Plattenzylinder angetrieben, d.h. im an- als auch abgestelltem Zustand läuft sie mit dessen Umfangsgeschwindigkeit. Die in einem Feuchtmittelbehälter eintauchende Feuchtduktorwalze weist einen eigenen, drehzahlsteuerbaren Antrieb auf, so daß entsprechend des Feuchtmittelbedarfes der Druckform bei unterschiedlichen Maschinengeschwindigkeiten die notwenige Feuchtmittelmenge zuführbar ist.A dampening unit for an offset printing press is known from EP 0 450 155 B1 which a dampening roller to the plate cylinder and a dampening roller (Immersion roller) is mounted on and off. The dampening roller is removed from the plate cylinder driven, i.e. when switched on and off, it runs at its peripheral speed. The dampening roller immersed in a dampening solution container has its own, speed-controllable drive, so that according to the dampening solution requirement the printing form at different machine speeds Amount of dampening solution can be supplied.

Gemäß der DE 36 38 469 A1 ist ein Verfahren und eine Vorrichtung zum Antrieb einer Lackiereinrichtung bekannt. Die Lackiereinrichtung besitzt eine Schöpfwalze und eine mit einem Formzylinder in Kontakt stehende Auftragwalze. Weiterhin ist der Schöpfwalze einer Dosierwalze zugeordnet. Die Schöpfwalze ist über ein Zahnradgetriebe mit einem separaten drehzahlsteuerbaren und drehrichtungsumschaltbaren Elektroantrieb gekoppelt. Beim Walzenwaschen kann insbesondere durch das die Reibungszahl reduzierende Reinigungsfluid, die zu verarbeitende Farbe bzw. der Lack, die Walzenpressung und oder die Werksstoffpaarung selbst die äußere Reibung von mindestens zwei sich berührenden Walzen an deren Kontaktflächen derart reduzieren, daß die übertragbare Umfangskraft gegen Null geht. D.h. im Extremfall kann wenigstens eine Walze "stehenbleiben" oder es treten Stick-Slip-Bewegungen an der Walzenoberfläche auf. Dies wirkt sich negativ auf die Standzeit der Walzen im jeweiligen Druckwerk aus. Weiterhin wirkt eine stehenbleibende Walze wie ein Abstreifelement (analog einer Rakel) und rakelt die Waschmittel-Farb/Lack-Emulsion von der benachbarten Walze ab. Dabei kann die Emulsion in den Feuchtmittelbehälter oder ggf. in einen Lackvorratsbehälter gelangen und das dort jeweils vorhandene flüssige Medium verunreinigen. Derart verschmutzte flüssige Medien müssen zwangsläufig ausgetauscht werden, was zusätzlichen Aufwand darstellt.According to DE 36 38 469 A1 is a method and an apparatus for driving a Painting device known. The painting device has a scoop roller and one with an applicator roller in contact with a forme cylinder. Furthermore, the scoop roller is one Dosing roller assigned. The scoop roller is via a gear transmission with a separate one speed-controllable and rotational direction switchable electric drive coupled. When washing the rollers can in particular by the cleaning fluid reducing the coefficient of friction, the color or varnish to be processed, the roller pressure and or the material pairing even the external friction of at least two rollers in contact with each other Reduce contact areas so that the transferable circumferential force is close to zero. I.e. in extreme cases, at least one roller can "stop" or stick-slip movements occur on the roller surface. This has a negative effect on the service life of the Rolls out in the respective printing unit. Furthermore, a stationary roller acts as if Scraper element (analogous to a squeegee) and scrapes the detergent ink / lacquer emulsion from the neighboring roller. The emulsion can be placed in the dampening solution tank or get into a paint storage container and the liquid medium present there contaminate. Liquid media contaminated in this way must be replaced what additional effort is required.

Weiterhin führt dies zu längeren Waschzeiten mit erhöhtem Waschmittelverbrauch. Durch das "stehenbleiben" einer Walze, kann sich Farbe bzw. Lack oder eine Emulsion an der Walzenoberfläche aufbauen, was ein manuelles Nachreinigen erfordert. Ein mögliches Verschmutzen des in einem Vorratsbehälter verbliebenen flüssigen Mediums ist ebenso nicht auszuschließen, da eine stehenbleibende Walze eine Abstreiffunktion erfüllt und beispielsweise die Emulsion von der Walzenoberfläche abrakelt, welche dabei in den Vorratsbehälter laufen kann.Furthermore, this leads to longer washing times with increased detergent consumption. By the "stopping" of a roller can change color or varnish or an emulsion on the Build up roller surface, which requires manual cleaning. Possible contamination the liquid medium remaining in a storage container is also not to be ruled out, as a roller that has stopped will perform a wiping function and, for example the emulsion scrapes off the roller surface, which thereby enters the storage container can run.

Aufgabe der Erfindung ist es daher ein Verfahren zu schaffen, daß die genannten Nachteile vermeidet, daß in der Betriebsart Reinigen von Walzen und von Zylindern die äußere Reibung aufrecht erhalten wird, so daß ein Abfallen der übertragbaren Umfangskraft in der Walzenpaarung vermieden wird.The object of the invention is therefore to provide a method that the disadvantages mentioned avoids that in the cleaning mode of rollers and cylinders the external friction is maintained so that the transferable peripheral force drops is avoided in the roller pairing.

Die Aufgabe wird durch die Ausbildungsmerkmale von Anspruch 1 und 3 gelöst. Weiterbildungen ergeben sich aus den Unteransprüchen.The task is solved by the training features of claims 1 and 3. Further training results from the subclaims.

In einem Druckwerk einer vorzugsweise Offsetdruckmaschine ist vorgesehen, neben dem Farbwerkswalzenzug auch den Plattenzylinder und den Feuchtwerkwalzenzug zu reinigen. Mittels einer Steuerung kann einzeln, gruppenweise oder gemeinsam der Farbwerkswalzenzug, der Plattenzylinder sowie der Feuchtwerkswalzenzug in den Reinigungsprozess einbezogen werden. Für die Betriebsart "Reinigen von Walzen" wird über eine Brückenwalze der Feuchtwerkswalzenzug in den Farbwerkswalzenzug integriert.
Wahlweise kann die Feuchtauftragwalze des Feuchtwerkswalzenzuges zusätzlich an den Plattenzylinder angestellt werden.
Im Reinigungsprozess wird als Reinigungsfluid, vorzugsweise ein vegetabiles Reinigunsmittel und /oder Wasser verwendet. Das Feuchtmittel ist aus dem Feuchtmittelbehälter entfernt oder soweit abgesenkt, daß der Feuchtduktor nicht mehr in das Feuchtmittel eintaucht. Der Feuchtduktor wird mit dem separaten drehzahlsteuerbaren Antrieb gekoppelt und bezogen auf einen im Druckbetrieb üblichen Wert zeitlich begrenzt mit überhöhter Drehzahl angetrieben. Gleichzeitig wird die Maschinengeschwindigkeit des Druckwerkes auf die Drehzahl eingestellt, bei der die vom Plattenzylinder angetriebene Feuchtauftragwalze zum separat angetriebenen Feuchtduktor eine synchrone Umfangsgeschwindigkeit aufweist.
In a printing unit of a preferably offset printing machine, it is provided to clean the plate cylinder and the dampening unit roller in addition to the inking unit roller train. The inking unit roller, the plate cylinder and the dampening unit roller can be included in the cleaning process individually, in groups or together. For the "cleaning rollers" operating mode, the dampening roller unit is integrated into the inking unit roller via a bridge roller.
Optionally, the dampening roller of the dampening unit roller can also be placed on the plate cylinder.
In the cleaning process, preferably a vegetable cleaning agent and / or water is used as the cleaning fluid. The dampening solution has been removed from the dampening solution container or has been lowered so far that the dampening roller no longer dips into the dampening solution. The dampening duct is coupled to the separate speed-controllable drive and is driven for a limited time at an excessive speed in relation to a value customary in printing operation. At the same time, the machine speed of the printing unit is set to the speed at which the dampening roller driven by the plate cylinder has a synchronous peripheral speed to the separately driven dampening roller.

Das Arbeitsverfahren ist jedoch nicht auf einen Walzenzug in einem Druckwerk beschränkt. Vielmehr eignet sich dieses auch für Lackiereinheiten, die neben dem Formzylinder wenigstens eine Auftragwalze und eine benachbarte Duktorwalze (Zweiwalzenwerk) aufweisen. Dabei kann der Duktorwalze zusätzlich eine Dosierwalze zugeordnet, oder zwischen Auftragswalze und Duktorwalze weitere Übertragwalzen angeordnet werden. Dem Walzenspalt ist ein Sprührohr zugeordnet für das Aufbringen von Reiningungsfluid. Die Duktorwalze ist in einer Lackiereinheit dieser Art ebenfalls mir einem separaten drehzahlsteuerbaren Motorantrieb gekoppelt. Die Auftragwalze ist über ein Zahnradgetriebe mit dem Formzylinder gekoppelt. Für die Betriebsart "Reinigen der Walzen" wird die Duktorwalze analog zum Feuchtwerksbetrieb in ihrer Drehzahl auf einen Wert zeitlich begrenzt überhöht angetrieben. Gleichzeitig zur Duktorwalze wird die Auftragwalze vom Formzylinder angetrieben und dies mit synchroner Umfangsgeschwindigkeit.
Der Vorteil dieser Ausführungen ist, daß eine spürbare Ergebnisverbesserung beim Walzenreinigen erzielt wird, indem die Walzen im Feuchtwerkswalzenzug oder im Lackierwerk schneller gereinigt werden. Dabei kann auch der Plattenzylinder in den Reinigungsprozess integriert werden, indem die Feuchtauftragswalze bzw. die Lackauftragswalze während des Reinigungsprozesses mit dem Plattenzylinder in Kontakt steht. Das "stehenbleiben" einer Walze wird vermieden und somit verringern sich der Reinigungsfluidverbrauch sowie die Reinigungszeit. Auch das Verschmutzen des Vorratsbehälters und das damit verbundene Säubern entfällt.
However, the working process is not limited to a single drum roller in a printing unit. Rather, this is also suitable for coating units which, in addition to the forme cylinder, have at least one application roller and an adjacent duct roller (two-roller mill). In this case, the metering roller can additionally be assigned a metering roller, or further transfer rollers can be arranged between the application roller and the doctor roller. A spray tube is assigned to the roll nip for the application of cleaning fluid. In a painting unit of this type, the duct roller is also coupled to a separate speed-controllable motor drive. The application roller is coupled to the forme cylinder via a gear drive. For the operating mode "cleaning the rollers", the speed of the ductor roller is driven to a value that is limited in time, analogous to the dampening unit operation. At the same time as the duct roller, the applicator roller is driven by the forme cylinder and this with synchronous peripheral speed.
The advantage of these designs is that a noticeable improvement in the result of roller cleaning is achieved by the rollers being cleaned more quickly in the dampening unit roller train or in the coating unit. The plate cylinder can also be integrated into the cleaning process in that the dampening roller or the lacquer roller is in contact with the plate cylinder during the cleaning process. The "standstill" of a roller is avoided and thus the cleaning fluid consumption and the cleaning time are reduced. Soiling of the storage container and the associated cleaning are also eliminated.

Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden.
Dabei zeigt:

Fig. 1
ein Druckwerk einer Offsetdruckmaschine,
Fig. 2
eine Lackiereinheit.
The invention will be explained in more detail using an exemplary embodiment.
It shows:
Fig. 1
a printing unit of an offset printing machine,
Fig. 2
a painting unit.

Das Druckwerk besteht im wesentlichen aus einem Farbauftagwalzenzug 4, einem Feuchtauftragwalzenzug 3, einem Plattenzylinder 1 und einem Gummituchzylinder 2. Dem Farbwerkswalzenzug 4 ist eine Sprüheinrichtung zugeordnet, die mit einem vegetabilen Reinigungsmittel und / oder Wasser betreibbar ist. Dem Plattenzylinder 1 sind zum Farbauftragwalzenzug 4 gehörende Farbauftragwalzen 13 sowie eine zum Feuchtwerkwalzenzug 3 gehörende Feuchtauftragwalze 6 an- und abstellbar zugeordnet. Der Feuchtwerkswalzenzug 3 ist über eine Brückenwalze 5 mit dem Farbwerkswalzenzug 4 koppelbar. Auf weitere Bauteile des Druckwerkes soll hier nicht eingegangen werden.
In Drehrichtung des Plattenzylinders 1 gesehen ist an einer der letzten Walzen des Farbwerkswalzenzuges 4 eine Rakeleinrichtung 11 angeordnet, die in einem Drehgelenk aufgenommen ist und mittels einer Betätigungseinrichtung 10 zum an- und abstellen an die Walze schwenkbar ist. Die Betätigungseinrichtung 10 sowie die Sprüheinrichtung sind mittels Leitstand steuerbar. Der Feuchtwerkswalzenzug 3 weist neben Feuchtauftragwalze 6 und Brückenwalze 5 einen mit einem separaten, drehzahlsteuerbaren Antrieb gekoppelten Feuchtduktor 7 auf, der in einen Feuchtmittelbehälter 9 eintaucht. Der Feuchtduktor 7 ist in Kontakt mit einer Dosierwalze 8. Die Brückenwalze 5 ist als Reiterwalze der Feuchtauftragswalze 6 zugeordnet.
The printing unit essentially consists of an inking roller 4, a dampening roller 3, a plate cylinder 1 and a blanket cylinder 2. The inking roller 4 is assigned a spray device which can be operated with a vegetable cleaning agent and / or water. The plate cylinder 1 is assigned to the inking roller train 4, inking rollers 13 and a dampening roller roller 3 belonging to the dampening roller train 3 can be switched on and off. The dampening unit roller train 3 can be coupled to the inking unit roller train 4 via a bridge roller 5. Further components of the printing unit will not be discussed here.
As seen in the direction of rotation of the plate cylinder 1, a doctor device 11 is arranged on one of the last rollers of the inking unit roller train 4, which is received in a swivel joint and can be pivoted to the roller by means of an actuating device 10 for switching it on and off. The actuating device 10 and the spray device can be controlled by means of a control station. In addition to the dampening roller 6 and the bridge roller 5, the dampening unit roller train 3 has a dampening roller 7 which is coupled to a separate, speed-controllable drive and which is immersed in a dampening agent reservoir 9. The dampening roller 7 is in contact with a metering roller 8. The bridge roller 5 is assigned to the dampening roller 6 as a rider roller.

In einer weiteren Ausbildung kann die Feuchtauftragwalze eine zusätzliche Reiterwalze 12 tragen, die zur Brückenwalze 5 benachbart angeordnet ist. Für die Betriebsart "Reinigen von Walzen" wird nachdem der Farbwerkswalzenzug 4 gereinigt wurde, die an der Feuchtauftragwalze 6 aufliegende Brückenwalze 5 mit dem Farbwerkswalzenzug 4 gekoppelt. In a further embodiment, the dampening roller can have an additional rider roller 12 wear, which is arranged adjacent to the bridge roller 5. For the operating mode "cleaning of rollers "is cleaned after the inking unit roller 4, on the dampening roller 6 resting bridge roller 5 coupled to the inking unit roller 4.

Damit ist der Feuchtwerkswalzenzug 3 in den Farbwerkswalzenzug 4 integriert.
Der Antrieb des Feuchtduktors 7 wird bei aktivierter Sprüheinrichtung und Rakeleinrichtung aktiviert und der Feuchtduktor 7 wird bezogen auf einen im Druckbetrieb üblichen Wert zeitlich begrenzt mit überhöhter Umfangsgeschwindigkeit betrieben. Gleichzeitig wird die Maschinengeschwindigkeit des Druckwerkes auf eine definierte Drehzahl eingestellt, bei der die Umfangsgeschwindigkeiten der vom Plattenzylinder 1 angetriebenen Feuchtauftragwalze 6 zum Feuchtduktor 7 synchron sind. Es wurde gefunden, daß für das Reinigungsverfahren günstige synchrone Geschwindigkeiten in einem Bereich von 3000 bis 8000 Bogen pro Stunde erzielbar sind.
Die zum Feuchtduktor 7 benachbarten Dosierwalze 8 wird dabei mittels Friktion durch den Feuchtduktor 7 angetrieben. Ist der Feuchtwerkswalzenzug 3 mit einer zusätzlichen, auf der Feuchtauftragwalze 6 aufliegenden Reiterwalze 12 ausgebildet, so kann diese aus ihrer Position 12 in Richtung der Dosierwalze 8 verschwenkt werden derart, daß die Reiterwalze 12 dann die Position 12' einnimmt und mit der Feuchtauftragwalze 6 und der Dosierwalze 8 in Kontakt steht. Diese Walzenposition 12'erhöht die übertragbare Umfangskraft zusätzlich. Der Feuchtdoktor 7 wird dabei wie bereits beschrieben angetrieben.
The dampening unit roller 3 is thus integrated into the inking unit roller 4.
The drive of the dampening duct 7 is activated when the spraying device and doctor blade device are activated, and the dampening duct 7 is operated for a limited time at an excessive peripheral speed in relation to a value customary in printing operation. At the same time, the machine speed of the printing unit is set to a defined speed at which the peripheral speeds of the dampening roller 6 driven by the plate cylinder 1 are synchronized with the dampening roller 7. It has been found that, for the cleaning process, favorable synchronous speeds in a range from 3000 to 8000 sheets per hour can be achieved.
The metering roller 8 adjacent to the dampening roller 7 is driven by the damping roller 7 by means of friction. If the dampening roller 3 is designed with an additional rider roller 12 resting on the dampening roller 6, it can be pivoted from its position 12 in the direction of the metering roller 8 in such a way that the rider roller 12 then assumes the position 12 'and with the dampening roller 6 and Metering roller 8 is in contact. This roller position 12 'additionally increases the transferable peripheral force. The wet doctor 7 is driven as already described.

Gemäß Fig. 2 ist der Walzenzug eines Lackierwerkes gezeigt. Eine Auftragswalze 15 ist mit einem Formzylinder 14 in Kontakt. Neben der Auftragswalze 15 ist eine in einen Lackvorratsbehälter 19 eintauchende Duktorwalze 17 angeordnet und durch eine Übertragwalze 16 sind beide Walzen 15,17 gekoppelt. Die Duktorwalze 17 trägt in dieser Ausbildung eine Dosierwalze 18. Dem Walzenspalt, gebildet aus Übertragwalze 16 und Duktorwalze 17, ist ein Sprührohr für Reinigungsfluid zugeordnet (nicht gezeigt). Die Duktorwalze 17 ist mit einem separaten, drehzahlsteuerbaren Antrieb gekoppelt und die Auftragswalze 15 ist mit dem Antrieb des Formzylinders 14 formschlüssig in Eingriff Zum Reinigen der Lackiereinheit werden das Sprührohr mit einem Reinigungsfluid beaufschlagt und die Duktorwalze 17 zeitlich begrenzt durch den Antrieb auf einen Drehzahlwert angetrieben, der über dem üblichen Produktionslackwert liegt. Gleichzeitig wird die Umfangsgeschwindigkeit der Auftragswalze 15 vom Formzylinder 14 derart gesteuert, daß Duktorwalze 17 und Auftragswalze 15 mit synchroner Umfangsgeschwindigkeit betreibbar sind. 2, the roller train of a coating unit is shown. An application roller 15 is with a forme cylinder 14 in contact. In addition to the application roller 15 is in a paint reservoir 19 immersed ductor roller 17 and arranged by a transfer roller 16 both rollers 15, 17 are coupled. The duct roller 17 carries a in this training Metering roller 18. The nip, formed from transfer roller 16 and duct roller 17, is associated with a spray tube for cleaning fluid (not shown). The duct roller 17 is with a separate, speed-controllable drive coupled and the application roller 15 is with the drive of the forme cylinder 14 positively engaged for cleaning the painting unit cleaning fluid is applied to the spray tube and the duct roller 17 limited in time driven by the drive to a speed value that is above the usual Production paint value is. At the same time, the peripheral speed of the application roller 15 controlled by the forme cylinder 14 in such a way that duct roller 17 and applicator roller 15 can be operated with synchronous peripheral speed.

BezugszeichenaufstellungList of reference symbols

11
PlattenzylinderPlate cylinder
22nd
GummituchzylinderBlanket cylinder
33rd
FeuchtwerkswalzenzugDampening roller
44th
FarbwerkswalzenzugInking roller
5, 5'5, 5 '
BrückenwalzeBridge roller
66
FeuchtauftragwalzeDampening roller
77
FeuchtduktorwalzeDampening roller
88th
DosierwalzeDosing roller
99
FeuchmittelbehälterDampening agent tank
1010th
BetätigungseinrichtungActuator
1111
RakeleinrichtungDoctor device
12, 12'12, 12 '
ReiterwalzeRider roller
1313
FarbauftragwalzeInking roller
1414
FormzylinderForme cylinder
1515
AuftragswalzeApplicator roller
1616
ÜbertragwalzeTransfer roller
1717th
LackduktorPaint doctor
1818th
DosierwalzeDosing roller
1919th
LackvorratsbehälterPaint storage container

Claims (3)

  1. Process for cleaning cylinders and rollers in a printing press with an inking unit roller train (4) to which a spray device and a doctor device (11) are fitted and a damping unit roller train (3) having at least one damping applicator roller(6) and a damping ductor (7) which, by means of switchable bridging roller (5) is integrated into the inking unit roller train (4), wherein the spray unit which can be subjected to a cleaning agent and the doctor device (11) are activated, the damping applicator roller (6) is driven from a plate cylinder (1), the damping ductor (7) is driven by a separate rotational speed controllable drive in comparison to the print operation with increased peripheral speed, so that the peripheral speeds of the damping applicator roller (6) and of the damping ductor (7) are synchronous, wherein further rollers of the damping unit roller train (3) are driven by friction.
  2. Process according to Claim 1, characterised in that a rider roller (12, 12') arranged frictionally relative to the damping applicator roller (6) is brought into frictional contact with a metering roller (8) fitted to the damping ductor (7).
  3. Process for cleaning cylinders and rollers of a varnishing unit of a printing press with at least one applicator roller (15) and a ductor roller (17) dipping into a varhish storage container (19), wherein the ductor roller (17) is technically coupled by gearing with a separate drive, whereby a spray device which can be subjected to a cleaning agent is activated, the applicator roller (15) is driven by a forme cylinder (14), the ductor roller (17) is driven by a separate rotational speed controllable drive in comparison to a varnishing operation with increased peripheral speed, so that the peripheral speeds of applicator roller (15) and ductor roller (17) are synchronous, wherein further varnish feeding rollers of the varnishing unit are driven by friction.
EP97117937A 1996-11-02 1997-10-16 Method for cleaning cylinders and rollers in a printing machine Expired - Lifetime EP0839652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645169 1996-11-02
DE19645169A DE19645169C2 (en) 1996-11-02 1996-11-02 Process for cleaning cylinders and rollers in a printing press

Publications (3)

Publication Number Publication Date
EP0839652A2 EP0839652A2 (en) 1998-05-06
EP0839652A3 EP0839652A3 (en) 1998-12-02
EP0839652B1 true EP0839652B1 (en) 2001-04-04

Family

ID=7810449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117937A Expired - Lifetime EP0839652B1 (en) 1996-11-02 1997-10-16 Method for cleaning cylinders and rollers in a printing machine

Country Status (2)

Country Link
EP (1) EP0839652B1 (en)
DE (2) DE19645169C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031946B4 (en) * 2004-06-30 2021-03-18 Heidelberger Druckmaschinen Ag Method for driving rollers of a printing unit of a printing machine
JP4786325B2 (en) 2004-12-21 2011-10-05 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Method for cleaning an anilox inking device of a printing press
DE102007004217A1 (en) 2007-01-27 2008-07-31 Man Roland Druckmaschinen Ag Method for cleaning of cylinders and rollers in offset printing machine, involves moving away dampening solution case from operating position for printing operation, in which dampening ductor is dipped in dampening solution

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369734A (en) * 1980-03-17 1983-01-25 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Varnishing assembly in a printing press having self-cleaning feature
DE3507210A1 (en) * 1985-03-01 1986-09-04 Heidelberger Druckmaschinen Ag, 6900 Heidelberg WASHING DEVICE FOR THE RUBBER SCARF ON OFFSET ROTATION PRINTING MACHINES
DD238574A1 (en) * 1985-06-25 1986-08-27 Polygraph Leipzig METHOD AND DEVICE FOR REMOVING PUTTING ON THE PRESSURE PLATE
DD247417B1 (en) * 1986-04-01 1990-06-20 Polygraph Leipzig DEVICE FOR DRIVING A PAINTING DEVICE
DE3832527A1 (en) * 1987-09-29 1989-04-13 Jpe Kk Damping system for an offset printing machine
DE4011039C2 (en) * 1990-04-05 1996-03-14 Roland Man Druckmasch Process for moistening and inking a plate cylinder of a multi-color offset sheet-fed rotary printing press
DE4410161C2 (en) * 1994-03-24 1998-02-26 Roland Man Druckmasch Method and device for removing slugs on the printing plate of a printing press
DE19501806C5 (en) * 1995-01-21 2005-08-18 Man Roland Druckmaschinen Ag Method for cleaning cylinders and rollers of a printing unit of a printing machine

Also Published As

Publication number Publication date
DE59703283D1 (en) 2001-05-10
EP0839652A2 (en) 1998-05-06
DE19645169A1 (en) 1998-05-14
DE19645169C2 (en) 2000-02-03
EP0839652A3 (en) 1998-12-02

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