EP2948304B1 - Gravure printing machine and inking unit - Google Patents

Gravure printing machine and inking unit Download PDF

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Publication number
EP2948304B1
EP2948304B1 EP14713032.2A EP14713032A EP2948304B1 EP 2948304 B1 EP2948304 B1 EP 2948304B1 EP 14713032 A EP14713032 A EP 14713032A EP 2948304 B1 EP2948304 B1 EP 2948304B1
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EP
European Patent Office
Prior art keywords
inking unit
inking
gravure printing
print job
ink
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EP14713032.2A
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German (de)
French (fr)
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EP2948304A2 (en
Inventor
Clemens Brinkmann
Volker Schröder
Thorsten Meyer
Malte THYSSEN
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/02—Rotary intaglio printing presses for multicolour printing
    • B41F9/023—Web printing presses
    • B41F9/025—Web printing presses with horizontally arranged printing units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/04—Rotary intaglio printing presses specially adapted for proof printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/063—Using inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/11—Machines with modular units, i.e. with units exchangeable as a whole

Definitions

  • the invention relates to an inking unit of a gravure printing machine with a forme cylinder and with a coloring device coloring the forme cylinder with a color.
  • Such an inking unit is for example from the DE 10 2011 017 258 A1 and the WO 01/87604 A1 known.
  • An inking unit of a gravure printing machine according to the invention is defined in claim 1. Furthermore, a method for operating a gravure printing machine according to the invention is defined in claim 8.
  • a ready-to-print state of an inking unit is any state in which the inking unit can be used at any future time for a print job. If a generic inking unit removed from the gravure printing machine, then such an inking unit according to the prior art, however, initially not in the ready for printing state remains.
  • Gravure ink requires a low viscosity in order to be able to be transferred from the lower-lying sieve cups to the paper with good emptying. This low viscosity is essentially achieved via a high level of solvent (eg ethanol or ethyl acetate) with low boiling point in the paint.
  • the inking device of the removed inking unit is still operable. Namely, a drying of the ink can be prevented in particular by the inking device also continues to operate outside of the gravure printing machine. Further operation of the inking device means that the forme cylinder is driven at a lower speed compared to the printing operation and is so over the scoop roller or even directly from the ink tray continuously wetted with fresh paint, which prevents drying.
  • the doctor blade is attached to the forme cylinder to assist in purging the wells.
  • the impression roller mounted by the gravure printing press is not needed for this stand-by operation.
  • the continuous operation of the inking device can take place via the form cylinder running directly in the ink tray.
  • a scoop roller with a soft cover, which moves freely in the paint tray and which transfers the paint to the forme cylinder running outside the paint tray.
  • the scoop roller can preferably be designed as a braked roller, resulting in a largely splash-free application of a homogeneous color film on the forme cylinder.
  • the stand-by mode specially designed paint circulation, which is held by a corresponding pump in motion.
  • the saturation vapor pressure of the atmosphere surrounding the paint is kept at a value which approximately corresponds to the saturation vapor pressure of the ink.
  • the ink-carrying areas, in particular the ink tray are covered by a hood. If the saturation vapor pressure of the ink sets within the cover, eg due to evaporation, further drying of the ink is prevented. This means that the air within the sealed area is saturated and can not absorb any other solvent in gaseous form.
  • a protective or inert gas in the closed area This should be done before the formation of an explosive atmosphere. For example, flooding with nitrogen or carbon dioxide would be possible.
  • the inking device according to the invention can be dispensed with completely in the removed state, which has some advantages.
  • the color since the color is not circulated, can also be dispensed with a corresponding viscous control of the liquid color.
  • the advantage of the inking unit according to the invention is, above all, that one or more inking units can be provided during a print job that is still running for the next print job.
  • the inking units provided are kept in a state ready for printing, ie the saturation vapor pressure of the atmosphere surrounding the ink is regulated accordingly, so that the printing ink on the format cylinder can not dry.
  • the inking units for the second print job are inserted into the gravure press, so that the second print job can be started immediately after the first print job. In this way, a considerable amount of set-up time can be saved so that the additional costs for the additionally required inking units can be amortized relatively quickly.
  • the inking unit comprises a mobile platform.
  • the mobile platform may for example be designed in the form of a hand pallet truck or a powered electric pallet truck.
  • the frame of the inking unit at the bottom has two recesses into which the fork of a commercial hand pallet truck or electric pallet truck can be pushed to raise the inking unit.
  • a powered platform so for example in the form of an electric pallet truck, application, it is also conceivable that the inking system self-propelled via a central control his way along the gravure printing searches and finds.
  • the forme cylinder can be driven by an electric motor and that the inking unit comprises an accumulator for supplying energy to the electric motor.
  • the electric motor can be used both for the stand-by operation and for the printing operation.
  • electric motors of high power about 6 kW
  • the requirements for the drive of the forme cylinder are very low and simple. It is therefore appropriate to firmly install the powerful electric motor for the printing operation in the gravure printing machine, while for the stand-by operation, a further electric motor is provided in the inking unit, which can be carried out with significantly less weight and space.
  • a pneumatic motor or a hydraulic motor is used as the drive.
  • the charging of the accumulator can preferably be done via embedded in the ground induction loops. As a result, contact and switching problems in explosion-proof environment can be avoided.
  • the inking unit comprises a docking interface, via which the inking unit can be fixed at a defined position relative to the gravure printing machine.
  • a cone and a prism may be provided, for example, on the ground, to which the inking unit is discharged after insertion into the gravure printing machine.
  • two surface contacts on the ground can provide further stability.
  • a toggle technique can increase the frictional engagement of the surface contacts. It is also conceivable that the pressure force of the impression roller is utilized to enhance the frictional engagement of the surface contacts.
  • the inking unit comprises an electronic interface via which control data can be transmitted between the gravure printing machine and the inking unit.
  • all data for the next print job can be transmitted from the proofing machine to the electronic interface and passed from the electronic interface to the gravure printing machine.
  • data include, for example, the drying temperature, the response factor of the solvent, the required web tension or certain parameters of the printing material.
  • the identification of the respective inking unit can be done via a system-wide unique code signal from the electronic interface. But it is also conceivable that in addition or alternatively an RFID chip, a barcode or the like is attached to the inking unit to uniquely identify the inking unit.
  • an inventive method for operating a gravure printing machine with a plurality of inking units in which the inking units are provided for the next second print job during a first print job, wherein the inking units provided are kept in a print-ready state, in which after the first print job, the inking units for the second print job are inserted into the gravure printing machine, and in which the second print job is started after inserting the inking units.
  • Fig. 1 shows an embodiment of an inking unit according to the invention 601.
  • the inking unit is mounted on a mobile platform 602, which can be raised for driving and lowered for printing operation.
  • a doctor blade 604 is employed on the forme cylinder.
  • the forme cylinder 603 is also in standby mode constantly supplied with paint or rinsed.
  • an electric motor 606 is flanged.
  • the reference numeral 607 finally shows the accumulator and the drive for the mobile platform 602.
  • Fig. 2 shows an unclaimed proofing machine 701 with an inking unit 601.
  • the in Fig. 2 shown inking is similar to the Fig. 1 described inking 601, so that reference can be made to the above description.
  • the press machine provides the impression roller 702, so that when the inking unit 601 is inserted, a pressing operation for the next print job can be carried out.
  • the pressure data determined in this case are stored in an electronic interface of the inking unit 601, not shown in more detail.
  • Fig. 3 shows a gravure printing machine 801 with multiple inking units 802 803 and 804.
  • the in Fig. 3 illustrated inking units 802, 803 and 804 are similar to the in Fig. 1 described inking 601, so that reference can be made to the above description.
  • the illustrated proofing machine 701 also resembles the in Fig. 2 illustrated printing machine, so that reference can be made here to the above description.
  • the inserted into the gravure printing machine 801 inking units 802 work from the currently running print job.
  • the inking units 803 are prepared in succession for the next print job. Of course, it is also possible that several proofing machines 701 are provided in parallel for this purpose.
  • the inking units 804 are provided on the gravure press 801 for change with the inking units 802.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die Erfindung betrifft ein Farbwerk einer Tiefdruckmaschine mit einem Formzylinder und mit einer den Formzylinder mit einer Farbe einfärbenden Einfärbevorrichtung.The invention relates to an inking unit of a gravure printing machine with a forme cylinder and with a coloring device coloring the forme cylinder with a color.

Ein derartiges Farbwerk ist beispielsweise aus der DE 10 2011 017 258 A1 und der WO 01/87604 A1 bekannt.Such an inking unit is for example from the DE 10 2011 017 258 A1 and the WO 01/87604 A1 known.

Ein Farbwerk einer Tiefdruckmaschine gemäß der Erfindung ist im Anspruch 1 definiert. Ferner ist ein Verfahren zum Betreiben einer Tiefdruckmaschine gemäß der Erfindung im Anspruch 8 definiert.An inking unit of a gravure printing machine according to the invention is defined in claim 1. Furthermore, a method for operating a gravure printing machine according to the invention is defined in claim 8.

Erfindungsgemäß ist das Farbwerk aus der Tiefdruckmaschine derart herausnehmbar, dass das Farbwerk in einem druckbereiten Zustand verbleibt.
Ein druckbereiter Zustand eines Farbwerks ist hierbei jeder Zustand, in dem das Farbwerk zu einem beliebigen zukünftigen Zeitpunkt für einen Druckauftrag verwendet werden kann.
Wird ein gattungsgemäßes Farbwerk aus der Tiefdruckmaschine herausgenommen, dann verbleibt ein derartiges Farbwerk nach dem Stand der Technik allerdings zunächst einmal nicht im druckbereiten Zustand.
Tiefdruckfarbe benötigt eine niedrige Viskosität, um aus den tieferliegenden Rasternäpfchen bei guter Entleerung auf das Papier übertragen werden zu können. Diese niedrige Viskosität wird im Wesentlichen über einen hohen Anteil an Lösemittel (z.B. Ethanol oder Ethylacetat) mit niedrigem Siedepunkt in der Farbe erreicht. Bei einem nicht im Einsatz befindlichen Farbwerk bedeutet dies nunmehr, dass das Lösemittel auch bei Raumtemperatur aus der Farbe verhältnismäßig schnell verdunsten und somit die Farbe in den Näpfchen verhältnismäßig schnell festtrocknen kann.
Ein aus einer Tiefdruckmaschine herausgenommenes Farbwerk wird daher üblicherweise gereinigt, indem Farbwanne geleert und das Farbwerk von Restfarbe befreit wird, bevor die Farbe in den Näpfchen festtrocknen konnte.According to the inking unit of the gravure printing machine is removable so that the inking unit remains in a ready for printing condition.
A ready-to-print state of an inking unit is any state in which the inking unit can be used at any future time for a print job.
If a generic inking unit removed from the gravure printing machine, then such an inking unit according to the prior art, however, initially not in the ready for printing state remains.
Gravure ink requires a low viscosity in order to be able to be transferred from the lower-lying sieve cups to the paper with good emptying. This low viscosity is essentially achieved via a high level of solvent (eg ethanol or ethyl acetate) with low boiling point in the paint. In the case of an inking unit which is not in use, this now means that the solvent can evaporate out of the paint relatively quickly even at room temperature, and thus dry the ink in the cells relatively quickly.
A taken out of a gravure printing inking unit is therefore usually cleaned by emptying ink tray and the inking unit is cleared of residual color before the ink could dry in the wells.

Für die Aufrechterhaltung des druckbereiten Zustands gibt es mehrere Möglichkeiten.
Eine Möglichkeit besteht darin, dass die Einfärbevorrichtung des herausgenommenen Farbwerks weiterhin betreibbar ist. Ein Antrocknen der Farbe kann nämlich insbesondere dadurch verhindert werden, indem die Einfärbevorrichtung auch außerhalb der Tiefdruckmaschine weiterhin betrieben wird. Ein weiteres Betreiben der Einfärbevorrichtung heißt dabei, dass der Formzylinder auf einer gegenüber dem Druckbetrieb niedrigeren Drehzahl angetrieben wird und so über die Schöpfwalze oder auch direkt aus der Farbwanne laufend mit frischer Farbe benetzt wird, was ein Antrocknen verhindert. Vorzugsweise - aber nicht notwendigerweise - ist das Rakelmesser an den Formzylinder angestellt, um das Spülen der Näpfchen zu unterstützen. Der seitens der Tiefdruckmaschine gelagerte Presseur wird für diesen Stand-By-Betrieb dagegen nicht benötigt. Das kontinuierliche Betreiben der Einfärbevorrichtung kann über den direkt in der Farbwanne laufenden Formzylinder erfolgen. Um eine zu starke Schaumbildung und ein Spritzen der Farbe zu verhindern, kann auch eine Schöpfwalze mit weichem Bezug vorgesehen sein, die in der Farbwanne frei mitläuft und die die Farbe auf den außerhalb der Farbwanne laufenden Formzylinder überträgt. Die Schöpfwalze kann vorzugsweise als gebremste Walze ausgeführt sein, wodurch sich ein weitgehend spritzfreies Auftragen eines homogenen Farbfilms auf den Formzylinder ergibt. Denkbar ist aber auch ein für den Stand-By-Betrieb speziell konstruierter Farbumlauf, der von einer entsprechenden Pumpe in Gang gehalten wird.There are several possibilities for maintaining the ready-to-print state.
One possibility is that the inking device of the removed inking unit is still operable. Namely, a drying of the ink can be prevented in particular by the inking device also continues to operate outside of the gravure printing machine. Further operation of the inking device means that the forme cylinder is driven at a lower speed compared to the printing operation and is so over the scoop roller or even directly from the ink tray continuously wetted with fresh paint, which prevents drying. Preferably, but not necessarily, the doctor blade is attached to the forme cylinder to assist in purging the wells. By contrast, the impression roller mounted by the gravure printing press is not needed for this stand-by operation. The continuous operation of the inking device can take place via the form cylinder running directly in the ink tray. In order to prevent excessive foaming and spraying of the paint, it is also possible to provide a scoop roller with a soft cover, which moves freely in the paint tray and which transfers the paint to the forme cylinder running outside the paint tray. The scoop roller can preferably be designed as a braked roller, resulting in a largely splash-free application of a homogeneous color film on the forme cylinder. However, it is also conceivable for the stand-by mode specially designed paint circulation, which is held by a corresponding pump in motion.

Erfindungsgemäß ist vorgesehen, dass der Sättigungsdampfdruck der die Farbe umgebenden Atmosphäre auf einem Wert gehalten wird, der näherungsweise dem Sättigungsdampfdruck der Farbe entspricht. Um dies zu erreichen, werden die farbführenden Bereiche, insbesondere die Farbwanne, durch eine Haube abgedeckt. Stellt sich innerhalb der Abdeckung, z.B. durch Verdunstung, der Sättigungsdampfdruck der Farbe ein, wird ein weiteres Antrocknen der Farbe verhindert. Dies bedeutet, dass die Luft innerhalb des abgeschlossenen Bereichs gesättigt ist und kein weiteres Lösemittel in Gasform aufnehmen kann. Um diesen Vorgang zu unterstützen, ist es auch denkbar, den Sättigungsdampfdruck durch Zugabe bzw. Entnahme von entsprechenden Gasanteilen gezielt zu erzeugen und zu regeln. Um darüber hinaus einen Explosionsschutz auch innerhalb der Abdeckung zu erreichen, ist es möglich, ein Schutz- bzw. Intertgas in den abgeschlossenen Bereich einzubringen. Dies sollte vor der Entstehung einer explosionsfähigen Atmosphäre erfolgen. Möglich wäre beispielsweise das Fluten mit Stickstoff oder Kohlenstoffdioxid.According to the invention, it is provided that the saturation vapor pressure of the atmosphere surrounding the paint is kept at a value which approximately corresponds to the saturation vapor pressure of the ink. To achieve this, the ink-carrying areas, in particular the ink tray, are covered by a hood. If the saturation vapor pressure of the ink sets within the cover, eg due to evaporation, further drying of the ink is prevented. This means that the air within the sealed area is saturated and can not absorb any other solvent in gaseous form. In order to support this process, it is also conceivable to deliberately generate and regulate the saturation vapor pressure by adding or removing corresponding gas fractions. In addition, in order to achieve explosion protection within the cover, it is possible to introduce a protective or inert gas in the closed area. This should be done before the formation of an explosive atmosphere. For example, flooding with nitrogen or carbon dioxide would be possible.

Setzt man zur Aufrechterhaltung des druckbereiten Zustands ausschließlich die oben beschriebene Sättigungsdampfdruckregelung ein, dann kann bei dem erfindungsgemäßen Farbwerk im herausgenommenen Zustand auf einen Weiterlauf der Einfärbevorrichtung ganz verzichtet werden, was einige Vorteile mit sich bringt. So kann insbesondere auf einen Weiterlaufantrieb des Formzylinders und der Einfärbevorrichtung verzichtet werden, was einen deutlich reduzierten Energiebedarf des herausgenommenen Farbwerks bedeutet. Da außerdem die Farbe nicht umgewälzt wird, kann auch auf eine entsprechende Viskoseregelung der flüssigen Farbe verzichtet werden.
Insgesamt besteht der Vorteil des erfindungsgemäßen Farbwerks vor allem darin, dass ein oder mehrere Farbwerke während eines noch laufenden Druckauftrags für den nächsten Druckauftrag bereitgestellt werden können. Die dabei bereitgestellten Farbwerke werden in einem druckbereiten Zustand gehalten, d.h. der Sättigungsdampfdruck der die Farbe umgebenden Atmosphäre wird entsprechend geregelt, sodass die Druckfarbe an dem Formatzylinder nicht antrocknen kann. Nach der Beendigung des ersten Druckauftrags werden die Farbwerke für den zweiten Druckauftrag in die Tiefdruckmaschine eingesetzt, sodass der zweite Druckauftrag unmittelbar nach dem ersten Druckauftrag gestartet werden kann.
Auf diese Weise kann ein erhebliches Maß an Rüstzeit eingespart werden, so dass die Mehrkosten für die zusätzlich benötigten Farbwerke sich verhältnismäßig schnell amortisieren lassen.If only the above-described saturation vapor pressure control is used to maintain the ready-to-pressure state, the inking device according to the invention can be dispensed with completely in the removed state, which has some advantages. Thus, in particular, can be dispensed with a continuous drive of the forme cylinder and the inking, which means a significantly reduced energy consumption of the removed inking unit. In addition, since the color is not circulated, can also be dispensed with a corresponding viscous control of the liquid color.
Overall, the advantage of the inking unit according to the invention is, above all, that one or more inking units can be provided during a print job that is still running for the next print job. The inking units provided are kept in a state ready for printing, ie the saturation vapor pressure of the atmosphere surrounding the ink is regulated accordingly, so that the printing ink on the format cylinder can not dry. After the first print job is completed, the inking units for the second print job are inserted into the gravure press, so that the second print job can be started immediately after the first print job.
In this way, a considerable amount of set-up time can be saved so that the additional costs for the additionally required inking units can be amortized relatively quickly.

Erfindungsgemäß ist vorgesehen, dass das Farbwerk eine fahrbare Plattform umfasst. Die fahrbare Plattform kann beispielsweise in Form eines Handhubwagens oder eines angetriebenen Elektrohubwagens ausgeführt sein. Es ist auch denkbar, dass das Gestell des Farbwerks am Boden zwei Aussparungen aufweist, in die die Lastgabel eines handelsüblichen Handhubwagens oder Elektrohubwagens zum Anheben des Farbwerks hineingeschoben werden kann. Soweit eine angetriebene Plattform, also beispielsweise in Form eines Elektrohubwagens, Anwendung findet, ist es außerdem denkbar, dass das Farbwerk selbstfahrend über eine zentrale Steuerung seinen Weg entlang der Tiefdruckmaschine sucht und findet.According to the invention, it is provided that the inking unit comprises a mobile platform. The mobile platform may for example be designed in the form of a hand pallet truck or a powered electric pallet truck. It is also conceivable that the frame of the inking unit at the bottom has two recesses into which the fork of a commercial hand pallet truck or electric pallet truck can be pushed to raise the inking unit. As far as a powered platform, so for example in the form of an electric pallet truck, application, it is also conceivable that the inking system self-propelled via a central control his way along the gravure printing searches and finds.

Nach einer bevorzugten Ausführungsform ist vorgesehen, dass der Formzylinder von einem Elektromotor antreibbar ist und dass das Farbwerk einen Akkumulator zur Energieversorgung des Elektromotors umfasst. Grundsätzlich kann dabei der Elektromotor sowohl für den Stand-By-Betrieb also auch für den Druckbetrieb verwendet werden. Für den Druckbetrieb werden allerdings Elektromotoren hoher Leistung (ca. 6 kW) mit einer anspruchsvollen Steuerung benötigt, während im Stand-By-Betrieb die Anforderungen an den Antrieb des Formzylinders sehr gering und einfach sind. Es bietet sich daher an, den leistungsstarken Elektromotor für den Druckbetrieb in der Tiefdruckmaschine fest zu installieren, während für den Stand-By-Betrieb ein weiterer Elektromotor im Farbwerk vorgesehen ist, der mit wesentlich weniger Gewicht und Platzbedarf ausgeführt werden kann. Insbesondere aus Gründen des Explosionsschutzes ist es aber auch denkbar, dass als Antrieb ein pneumatischer Motor oder ein hydraulischer Motor eingesetzt wird.According to a preferred embodiment, it is provided that the forme cylinder can be driven by an electric motor and that the inking unit comprises an accumulator for supplying energy to the electric motor. In principle, the electric motor can be used both for the stand-by operation and for the printing operation. For the printing operation, however, electric motors of high power (about 6 kW) are required with a sophisticated controller, while in standby mode, the requirements for the drive of the forme cylinder are very low and simple. It is therefore appropriate to firmly install the powerful electric motor for the printing operation in the gravure printing machine, while for the stand-by operation, a further electric motor is provided in the inking unit, which can be carried out with significantly less weight and space. In particular, for reasons of explosion protection, it is also conceivable that a pneumatic motor or a hydraulic motor is used as the drive.

Soweit in dem Farbwerk ein Akkumulator zur Energiespeicherung eingesetzt wird, kann die Aufladung des Akkumulators vorzugsweise über im Boden eingelassene Induktionsschleifen erfolgen. Hierdurch können Kontakt- und Schaltprobleme in explosionsgeschützter Umgebung vermieden werden.As far as an accumulator for energy storage is used in the inking unit, the charging of the accumulator can preferably be done via embedded in the ground induction loops. As a result, contact and switching problems in explosion-proof environment can be avoided.

Neben der elektrischen Energiespeicherung sind selbstverständlich auch andere physikalische Prinzipien der Energiespeicherung bzw. Energiewandlung denkbar, wie etwa ein pneumatischer Druckspeicher mit entsprechendem Antrieb oder ein elektro-pneumatisches Hybrid-Speicher- und Antriebssystem. Auch der Antrieb über eine im Boden verlaufende Schleppkette ist denkbar.
Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass zwischen Formzylinder und Elektromotor eine steuerbare Kupplung geschaltet ist, um zwischen dem Hauptantrieb und dem Stand-By-Antrieb umzuschalten.
Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass das Farbwerk eine Andock-Schnittstelle umfasst, über die das Farbwerk auf einer definierten Position gegenüber der Tiefdruckmaschine fixierbar ist. Zum Erreichen einer definierten Position gegenüber der Tiefdruckmaschine können beispielsweise am Boden ein Konus und ein Prisma vorgesehen sein, auf die das Farbwerk nach dem Einsetzen in die Tiefdruckmaschine abgelassen wird. Zusätzlich können zwei Flächenkontakte am Boden für weitere Stabilität sorgen. Über eine Kniehebeltechnik kann der Reibschluss an den Flächenkontakten verstärkt werden. Es ist auch denkbar, dass die Andruckkraft des Presseurs ausgenutzt wird, um den Reibschluss an den Flächenkontakten zu verstärken.
Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass das Farbwerk eine elektronische Schnittstelle umfasst, über die zwischen der Tiefdruckmaschine und dem Farbwerk Steuerdaten übermittelbar sind. Soweit vor dem Druckauftrag ein Andrucken in einer Andruckmaschine erfolgt, können sämtliche Daten für den nächsten Druckauftrag von der Andruckmaschine an die elektronische Schnittstelle übermittelt und von der elektronischen Schnittstelle an die Tiefdruckmaschine weitergegeben werden. Zu solchen Daten zählen beispielsweise die Trocknungstemperatur, der Response-Faktor des Lösemittels, der erforderliche Bahnzug oder bestimmte Parameter des Bedruckstoffes. Die Identifikation des jeweiligen Farbwerkes kann über ein systemweit eindeutiges Code-Signal seitens der elektronischen Schnittstelle erfolgen. Es ist aber auch denkbar, dass zusätzlich bzw. alternativ ein RFID-Chip, ein Barcode oder Ähnliches am Farbwerk angebracht ist, um das Farbwerk eindeutig zu identifizieren.In addition to the electrical energy storage other physical principles of energy storage or energy conversion are of course conceivable, such as a pneumatic pressure accumulator with corresponding drive or an electro-pneumatic hybrid storage and drive system. The drive via a running in the ground drag chain is conceivable.
According to a further preferred embodiment, it is provided that between the forme cylinder and electric motor, a controllable clutch is connected to switch between the main drive and the stand-by drive.
According to a further preferred embodiment, it is provided that the inking unit comprises a docking interface, via which the inking unit can be fixed at a defined position relative to the gravure printing machine. To achieve a defined position relative to the gravure printing machine, a cone and a prism may be provided, for example, on the ground, to which the inking unit is discharged after insertion into the gravure printing machine. In addition, two surface contacts on the ground can provide further stability. A toggle technique can increase the frictional engagement of the surface contacts. It is also conceivable that the pressure force of the impression roller is utilized to enhance the frictional engagement of the surface contacts.
According to a further preferred embodiment, it is provided that the inking unit comprises an electronic interface via which control data can be transmitted between the gravure printing machine and the inking unit. As far as before printing a proofing takes place in a proofing machine, all data for the next print job can be transmitted from the proofing machine to the electronic interface and passed from the electronic interface to the gravure printing machine. Such data include, for example, the drying temperature, the response factor of the solvent, the required web tension or certain parameters of the printing material. The identification of the respective inking unit can be done via a system-wide unique code signal from the electronic interface. But it is also conceivable that in addition or alternatively an RFID chip, a barcode or the like is attached to the inking unit to uniquely identify the inking unit.

Ferner ist ein erfindungsgemäßes Verfahren zum Betreiben einer Tiefdruckmaschine mit mehreren Farbwerken vorgesehen,
bei dem während eines ersten Druckauftrags die Farbwerke für den nächsten zweiten Druckauftrag bereitgestellt werden, wobei die bereitgestellten Farbwerke in einem druckbereiten Zustand gehalten werden,
bei dem nach Beendigung des ersten Druckauftrags die Farbwerke für den zweiten Druckauftrag in die Tiefdruckmaschine eingesetzt werden, und
bei dem nach dem Einsetzen der Farbwerke der zweite Druckauftrag gestartet wird.Furthermore, an inventive method for operating a gravure printing machine with a plurality of inking units is provided,
in which the inking units are provided for the next second print job during a first print job, wherein the inking units provided are kept in a print-ready state,
in which after the first print job, the inking units for the second print job are inserted into the gravure printing machine, and
in which the second print job is started after inserting the inking units.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand der beigefügten Zeichnungen beschrieben. In diesen zeigen:

  • Fig. 1 eine Ausführungsform eines erfindungsgemäßen Farbwerks,
  • Fig. 2 eine Andruckmaschine mit einem Farbwerk, und
  • Fig. 3 eine Tiefdruckmaschine mit mehreren Farbwerken
Further details and advantages of the invention will be described with reference to the accompanying drawings. In these show:
  • Fig. 1 an embodiment of an inking unit according to the invention,
  • Fig. 2 a proofing machine with an inking unit, and
  • Fig. 3 a gravure printing machine with several inking units

Fig. 1 zeigt eine Ausführungsform eines erfindungsgemäßen Farbwerks 601. Das Farbwerk ist auf einer fahrbaren Plattform 602 montiert, die für den Fahrbetrieb angehoben und für den Druckbetrieb abgesenkt werden kann. Zum einfachen Austauschen ist der Formzylinder 603 gut zugänglich angeordnet. An dem Formzylinder ist ein Rakelmesser 604 angestellt. Über die Farbwanne 605 und eine nicht näher dargestellte Schöpfwalze wird der Formzylinder 603 auch im Stand-By-Betrieb laufend mit Farbe versorgt bzw. gespült. Zum Antrieb des Formzylinders 603 ist ein Elektromotor 606 angeflanscht. Mit dem Bezugszeichen 607 ist schließlich der Akkumulator und der Antrieb für die fahrbare Plattform 602 dargestellt. Fig. 1 shows an embodiment of an inking unit according to the invention 601. The inking unit is mounted on a mobile platform 602, which can be raised for driving and lowered for printing operation. For easy replacement of the forme cylinder 603 is arranged easily accessible. On the forme cylinder, a doctor blade 604 is employed. About the ink tray 605 and a scoop roller, not shown, the forme cylinder 603 is also in standby mode constantly supplied with paint or rinsed. To drive the forme cylinder 603, an electric motor 606 is flanged. The reference numeral 607 finally shows the accumulator and the drive for the mobile platform 602.

Fig. 2 zeigt eine nicht beanspruchte Andruckmaschine 701 mit einem Farbwerk 601. Das in Fig. 2 dargestellte Farbwerk gleicht dem in Fig. 1 beschriebenen Farbwerk 601, sodass auf die obige Beschreibung verwiesen werden kann. Die Andruckmaschine stellt darüber hinaus den Presseur 702 zur Verfügung, sodass bei eingeschobenem Farbwerk 601 ein Andruckvorgang für den nächsten Druckauftrag durchgeführt werden kann. Die hierbei ermittelten Druckdaten werden in einer nicht näher dargestellten elektronischen Schnittstelle des Farbwerks 601 gespeichert. Fig. 2 shows an unclaimed proofing machine 701 with an inking unit 601. The in Fig. 2 shown inking is similar to the Fig. 1 described inking 601, so that reference can be made to the above description. In addition, the press machine provides the impression roller 702, so that when the inking unit 601 is inserted, a pressing operation for the next print job can be carried out. The pressure data determined in this case are stored in an electronic interface of the inking unit 601, not shown in more detail.

Fig. 3 zeigt eine Tiefdruckmaschine 801 mit mehreren Farbwerken 802 803 und 804. Die in Fig. 3 dargestellten Farbwerke 802, 803 und 804 gleichen dem in Fig. 1 beschriebenen Farbwerk 601, sodass auf die obige Beschreibung verwiesen werden kann. Die dargestellte Andruckmaschine 701 gleicht außerdem der in Fig. 2 dargestellten Andruckmaschine, sodass auch hier auf die obige Beschreibung verwiesen werden kann.
Die in die Tiefdruckmaschine 801 eingeschobenen Farbwerke 802 arbeiten den momentan laufenden Druckauftrag ab. Gleichzeitig werden in der Andruckmaschine nacheinander die Farbwerke 803 für den nächsten Druckauftrag vorbereitet. Selbstverständlich ist es auch möglich, dass für diesen Zweck mehrere Andruckmaschinen 701 parallel bereitgestellt werden. Sobald die Farbwerke 803 für den nächsten Druckauftrag vorbereitet sind, werden die Farbwerke 804 an der Tiefdruckmaschine 801 für einen Wechsel mit den Farbwerken 802 bereitgestellt. Fig. 3 shows a gravure printing machine 801 with multiple inking units 802 803 and 804. The in Fig. 3 illustrated inking units 802, 803 and 804 are similar to the in Fig. 1 described inking 601, so that reference can be made to the above description. The illustrated proofing machine 701 also resembles the in Fig. 2 illustrated printing machine, so that reference can be made here to the above description.
The inserted into the gravure printing machine 801 inking units 802 work from the currently running print job. At the same time, the inking units 803 are prepared in succession for the next print job. Of course, it is also possible that several proofing machines 701 are provided in parallel for this purpose. Once the inking units 803 are prepared for the next print job, the inking units 804 are provided on the gravure press 801 for change with the inking units 802.

Claims (8)

  1. Inking unit of a gravure printing press,
    - with a form cylinder and with an inking device to ink the form cylinder with an ink, and
    - with a mobile platform to remove the inking unit from the gravure printing press,
    characterized in that
    the inked regions are covered by a hood upon removal of the inking unit, so that the saturation vapor pressure of the atmosphere surrounding the ink is maintained at a value that approximately corresponds to the saturation vapor pressure of the ink, so that the inking unit remains in a ready-to-print state.
  2. Inking unit according to claim 1, characterized in that the inking device of the removed inking unit is still operable.
  3. inking unit according to one of claims 1 - 2, characterized in that the mobile platform may be driven.
  4. Inking unit according to one of the claims 1-3, characterized in that the form cylinder may be driven by an electric motor, and that the inking unit comprises an accumulator for supplying energy to the electric motor.
  5. Inking unit according to claim 4, characterized in that a controllable clutch is connected between the form cylinder and the electric motor.
  6. Inking unit according to one of the claims 1-5, characterized in that the inking unit comprises a docking interface, via which the inking unit may be fixed in a defined position relative to the gravure printing press.
  7. Inking unit according to one of the claims 1-6, characterized in that the inking unit comprises an electronic interface via which control data may be transmitted between the gravure printing press and the inking unit.
  8. Method of operating a gravure printing press with a plurality of inking units according to one of the claims 1 - 7,
    - wherein the inking units are prepared for the following second print job during a first print job, wherein the prepared inking units are kept in a ready-to-print state,
    - wherein upon completion of the first print job, the inking units for the second print job are used in the gravure printing press, and
    - wherein after the insertion of the inking unit, the second print job is started.
EP14713032.2A 2013-01-24 2014-01-25 Gravure printing machine and inking unit Active EP2948304B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013100722 2013-01-24
DE102013220629 2013-10-14
PCT/EP2014/000194 WO2014114466A2 (en) 2013-01-24 2014-01-25 Gravure printing machine and inking unit

Publications (2)

Publication Number Publication Date
EP2948304A2 EP2948304A2 (en) 2015-12-02
EP2948304B1 true EP2948304B1 (en) 2018-09-19

Family

ID=50389384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14713032.2A Active EP2948304B1 (en) 2013-01-24 2014-01-25 Gravure printing machine and inking unit

Country Status (2)

Country Link
EP (1) EP2948304B1 (en)
WO (1) WO2014114466A2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139343C2 (en) * 1991-11-29 1995-04-13 Schepers Hans Georg Trial printing machine
AU4604800A (en) * 2000-05-17 2001-11-26 Mag-Tech S.R.L. Automatic device for replacing printing cartridges in a gravure printing machine
EP1683633B1 (en) * 2005-01-24 2011-09-21 Gallus Ferd. Rüesch AG Gravure printing unit for printing on a web in a printing machine
DE102008025650A1 (en) * 2008-05-28 2009-12-10 Gallus Stanz- Und Druckmaschinen Gmbh Printing unit for printing a substrate web in a printing machine
DE102011017258A1 (en) 2010-11-15 2012-05-16 Windmöller & Hölscher Kg Rotary printing machine and inking unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2014114466A3 (en) 2014-09-18
WO2014114466A2 (en) 2014-07-31
EP2948304A2 (en) 2015-12-02
WO2014114466A8 (en) 2016-05-19

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