EP1627738B1 - Printing unit and inking units with inking rollers and distribution roller being driven independently - Google Patents

Printing unit and inking units with inking rollers and distribution roller being driven independently Download PDF

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Publication number
EP1627738B1
EP1627738B1 EP05017832A EP05017832A EP1627738B1 EP 1627738 B1 EP1627738 B1 EP 1627738B1 EP 05017832 A EP05017832 A EP 05017832A EP 05017832 A EP05017832 A EP 05017832A EP 1627738 B1 EP1627738 B1 EP 1627738B1
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EP
European Patent Office
Prior art keywords
roller
inking
driven
rollers
printing
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 - Fee Related
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EP05017832A
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German (de)
French (fr)
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EP1627738A1 (en
Inventor
Günter Koppelkamm
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Manroland AG
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MAN Roland Druckmaschinen AG
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Publication of EP1627738A1 publication Critical patent/EP1627738A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/15—Devices for moving vibrator-rollers

Definitions

  • the invention relates to a printing unit according to the preamble of claim 1. Furthermore, the invention relates to an inking unit for a printing unit of a printing press according to the preamble of patent claim 14.
  • Printing units of web-fed rotary printing presses have a plurality of printing units, each printing unit consisting of a transfer cylinder, a forme cylinder and an inking unit as well as dampening unit.
  • printing units can have impression cylinders, wherein an impression cylinder can interact with one or more transfer cylinders of different printing units.
  • printing units are also known which do not have counter-pressure cylinders, with such printing units without counterpressure cylinders unrolling the transfer cylinders of two printing couples.
  • On the transfer cylinder blankets are usually on the form cylinders and pressure plates are stretched, which is why the transfer cylinder as a blanket cylinder and the forme cylinder are also referred to as printing plate cylinder.
  • the inking unit of a printing unit is used to apply printing ink to the forme cylinder of the printing unit, while the dampening unit serves to apply a dampening solution to the forme cylinder of the printing unit.
  • a number of inking units are already known from the prior art, with which ink can be effectively applied to a forme cylinder. As state of the art here on the WO 98/51500 and the DE 101 58 487 A1 directed.
  • Inkwells known in the art have a ductor roller that receives ink held in an ink fountain of the inking unit and transfers it to a film roll. From the film roller, the ink over several of the film roller downstream inking rollers can be transported in the direction of the forme cylinder of a printing unit, wherein the rolling on the forme cylinder inking rollers are referred to as inking rollers.
  • inking rollers In known from the prior art inking at least some of the arranged between the film roller and the or each inking roller inking rollers are rotationally driven and simultaneously iridescent. As a result of the rotary drive inking rollers rotate about their longitudinal central axis, due to a traversing drive they are reciprocated along their longitudinal central axis.
  • the present invention is based on the problem of creating a novel printing unit and a novel inking unit.
  • rotationally driven rollers and rollers driven in an alternating manner are also separated on the drive side within each dampening unit.
  • the inking unit according to the invention for a printing unit of a printing press is defined in the independent claim 14.
  • Fig. 1 shows a section of a printing unit 10 of a printing unit in the sense of the present invention, wherein in Fig. 1, a forme cylinder 11, a dampening unit 12 and an inking unit 13 is shown.
  • the inking unit 13 has a ductor roller 14 which removes ink from an ink fountain 15 and transfers it to a film roller 16 cooperating with the ductor roller 14. Starting from the film roller 16, the ink is transferred via several of the film roller 16 downstream inking rollers 17, 18 and 19 and on the forme cylinder 11 rolling inking rollers 20 and 21 on the forme cylinder 11.
  • a chromium-coated or ceramic-coated roller 22 onto which fountain solution prepared in a dampening solution reservoir 23 is applied, wherein the chromium-coated or ceramic-coated roller 22 transfers the dampening solution two of the same downstream rollers 24 and 25 transmits to the forme cylinder 11.
  • the roller 25 rolls on the forme cylinder 11 and is therefore also referred to as fountain solution application roller.
  • the roller 24 rolls on the chromium-coated or ceramic-coated roller 22.
  • the film roller 16 is arranged directly downstream of a trained as a central rubber roller 17 inking roller, wherein the central rubber roller 17 is rotatably driven via a rotary drive 26 associated therewith.
  • the chromium-coated or ceramic-coated roller 22 of the dampening unit 12 is rotationally driven, starting from the central rubber roller 17 via a chain drive 27 or toothed belt connecting the central rubber roller 17 and the chromium-coated or ceramic-coated roller 22.
  • the chromium-coated or ceramic-coated roller 22 of the dampening unit 12 is not associated with a separate rotary drive, but instead is rotationally driven via the rotary drive 26 associated with the central rubber roller 17 of the inking unit 13.
  • the rolling on the central rubber roller 17 of the inking unit 13 inking rollers 18 and 19, on the chromium-coated or ceramic coated roller 22 of the dampening unit 12 rolling roller 24 and rolling on the forme cylinder 11 inking rollers 20 and 21 and on the same rolling dampening application roller 25 are conditional driven by friction between the rolling rolls or cylinders on friction or friction with.
  • the rollers 18, 19 and 24 shown hatched in FIG. 1 are rollers that perform traversing movements.
  • the rollers 18, 19 and 24 are associated with axial drives. It follows that both in the inking unit 13 and in the dampening unit 12 of the printing unit 10 of FIG. 1 iridescent driven rollers and rotating driven rollers are driven side separated from each other.
  • the ink is applied to the forme cylinder 11 via two independent ink roller trains.
  • a first inking roller train is formed by the inking unit roller 18 and the inking roller 20
  • a second ink roller train is formed by the inking unit roller 19 and the inking roller 21.
  • the application of the ink to the forme cylinder 11 is carried out mainly via the ink roller train from the inking unit roller 19 and the inking roller 21, ie via that inking roller, which adjoins directly in the direction of rotation of the forme cylinder 11 to the fountain solution application roller 25.
  • the order of printing ink on the forme cylinder 11 is thus preferably on the dampening unit 12 facing inking roller 21.
  • about the inking roller 20 of the other color roller train and ink is applied to the forme cylinder 11, but this inking roller 20 also serves the smoothing of the inking roller 21 on the form cylinder 11 applied color film.
  • the film roll 16 is a relatively hard roll having a textured surface.
  • the central rubber roller 17 of the inking unit 13 is a relatively soft roller.
  • the inking rollers 18 and 19 performing a traversing movement are in turn relatively hard, the inking rollers 20 and 21 are formed relatively soft.
  • the chromium-coated or ceramic-coated roller 22 is a relatively hard roller, whereas the rollers 24 and 25 of the dampening unit 12 are made relatively soft. It follows immediately that the traversing movement performing rollers 18 and 19 of the inking unit 13 are formed relatively hard, the traversing movement performing a roller 24 of the dampening unit 12, however, is relatively soft.
  • axial drives for providing the traversing movements of the rollers 18, 19 and 24 are preferably designed as crankshaft drives with speed-controlled DC motors, which allow a change in the traversing frequency and the traverse stroke.
  • the traversing frequency is preferably between 3 Hz and 4 Hz, the traverse stroke in the range of a few millimeters.
  • Rotary actuators are preferably designed as three-phase drives.
  • the printing unit 10 or the inking unit 13 of FIG. 1 represents a basic module which can be extended by further components in the sense of the present invention.
  • the same reference numerals are used below for the same components and it is only discussed the details that distinguish the embodiments of FIGS. 2 to 5 from the embodiment of FIG.
  • two further inking rollers 28 and 29 are positioned between the film roller 16 and the central rubber roller.
  • the inking roller 28 rolls on the film roller 16 and the inking roller 29 on the central rubber roller 17 from.
  • In the inking unit roller 28 is a relatively soft inking roller, in the roller 29, however, a relatively hard inking roller.
  • FIG. 4 cooperate with the iridescent inking rollers 18 and 19 more inking rollers 32, 33, 34 and 35, wherein the inking rollers 32 and 33 are formed as iridescent rollers and roll on the central rubber roller 17, and wherein the inking rollers 34 and 35 cooperate with two iridescent inking rollers 18 and 32 and 19 and 33, respectively.
  • Fig. 5 shows an embodiment of the invention, in turn, the arrangement of Fig. 1 comes closest, and cooperate with only one of the two iridescent inking rollers 19, the inking rollers 33 and 35.
  • the rotary drives of the rotationally driven rollers and the axial drives of iridescent driven rollers of inking and dampening are preferably designed as single motor drives.
  • the rotationally driven rollers and the irresistibly driven rollers of the inking unit and optionally dampening unit can also be driven in each case via gear trains.

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

Description

Die Erfindung betrifft eine Druckeinheit gemäß dem Oberbegriff des Patentanspruchs 1. Des weiteren betrifft die Erfindung ein Farbwerk für ein Druckwerk einer Druckmaschine gemäß dem Oberbegriff des Patentanspruchs 14.The invention relates to a printing unit according to the preamble of claim 1. Furthermore, the invention relates to an inking unit for a printing unit of a printing press according to the preamble of patent claim 14.

Druckeinheiten von Rollenrotationsdruckmaschinen, insbesondere von Zeitungsdruckmaschinen, verfügen über mehrere Druckwerke, wobei jedes Druckwerk aus einem Übertragungszylinder, einem Formzylinder und einem Farbwerk sowie Feuchtwerk besteht. Es sind auch öllose Druckwerke ohne Feuchtwerk bekannt. Weiterhin können solche Druckeinheiten Gegendruckzylinder aufweisen, wobei ein Gegendruckzylinder mit einem oder mehreren Übertragungszylindern unterschiedlicher Druckwerke zusammenwirken kann. Neben Druckeinheiten, die derartige Gegendruckzylinder aufweisen, sind auch Druckeinheiten bekannt, die keine Gegendruckzylinder aufweisen, wobei bei solchen Druckeinheiten ohne Gegendruckzylinder die Übertragungszylinder zweier Druckwerke aufeinander abrollen. Auf den Übertragungszylinder werden in der Regel Gummitücher und auf den Formzylindern werden Druckplatten gespannt, weshalb die Übertragungszylinder auch als Gummituchzylinder und die Formzylinder auch als Druckplattenzylinder bezeichnet werden.Printing units of web-fed rotary printing presses, in particular of newspaper printing presses, have a plurality of printing units, each printing unit consisting of a transfer cylinder, a forme cylinder and an inking unit as well as dampening unit. There are also oilless printing units without dampening known. Furthermore, such printing units can have impression cylinders, wherein an impression cylinder can interact with one or more transfer cylinders of different printing units. In addition to printing units which have such counter-pressure cylinders, printing units are also known which do not have counter-pressure cylinders, with such printing units without counterpressure cylinders unrolling the transfer cylinders of two printing couples. On the transfer cylinder blankets are usually on the form cylinders and pressure plates are stretched, which is why the transfer cylinder as a blanket cylinder and the forme cylinder are also referred to as printing plate cylinder.

Das Farbwerk eines Druckwerks dient dem Auftragen von Druckfarbe auf den Formzylinder des Druckwerks, das Feuchtwerk dient hingegen dem Auftragen eines Feuchtmittels auf den Formzylinder des Druckwerks. Aus dem Stand der Technik sind bereits eine Reihe von Farbwerken bekannt, mit welchen sich Druckfarbe effektiv auf einen Formzylinder auftragen lässt. Als Stand der Technik sei hier auf die WO 98/51500 und die DE 101 58 487 A1 verwiesen.The inking unit of a printing unit is used to apply printing ink to the forme cylinder of the printing unit, while the dampening unit serves to apply a dampening solution to the forme cylinder of the printing unit. A number of inking units are already known from the prior art, with which ink can be effectively applied to a forme cylinder. As state of the art here on the WO 98/51500 and the DE 101 58 487 A1 directed.

Aus dem Stand der Technik bekannte Farbwerke verfügen über eine Duktorwalze, die in einem Farbkasten des Farbwerks bereitgehaltene Druckfarbe aufnimmt und an eine Filmwalze überträgt. Von der Filmwalze aus ist die Druckfarbe über mehrere der Filmwalze nachgeordnete Farbwerkwalzen in Richtung auf den Formzylinder eines Druckwerks transportierbar, wobei die auf dem Formzylinder abrollenden Farbwerkwalzen als Farbauftragwalzen bezeichnet werden. Bei aus dem Stand der Technik bekannten Farbwerken werden zumindest einige der zwischen der Filmwalze und der oder jeder Farbauftragwalze angeordneten Farbwerkwalzen drehend sowie gleichzeitig changierend angetrieben. Infolge des Drehantriebs rotieren Farbwerkwalzen um ihre Längsmittelachse, bedingt durch einen Changierantrieb werden dieselben entlang ihrer Längsmittelachse hin- und herbewegt. Bei allen aus dem Stand der Technik bekannten Farbwerken werden zumindest einige der drehend angetriebenen Farbwerkwalzen auch changierend angetrieben. Alle changierend angetriebenen Farbwerkwalzen werden nach dem Stand der Technik zumeist auch drehend angetrieben. Bedingt dadurch, dass nach dem Stand der Technik changierend angetriebene Farbwerkwalzen auch drehend angetrieben werden, ergibt sich ein komplexer Aufbau der Farbwerke und Druckeinheiten bzw. der zugehörigen Antriebe.Inkwells known in the art have a ductor roller that receives ink held in an ink fountain of the inking unit and transfers it to a film roll. From the film roller, the ink over several of the film roller downstream inking rollers can be transported in the direction of the forme cylinder of a printing unit, wherein the rolling on the forme cylinder inking rollers are referred to as inking rollers. In known from the prior art inking at least some of the arranged between the film roller and the or each inking roller inking rollers are rotationally driven and simultaneously iridescent. As a result of the rotary drive inking rollers rotate about their longitudinal central axis, due to a traversing drive they are reciprocated along their longitudinal central axis. In all known from the prior art inking at least some of the rotationally driven inking rollers are also driven iridescent. All irons driven inking rollers are usually driven by the state of the art rotating. Due to the fact that according to the prior art irridescent driven inking rollers are also driven in rotation, results in a complex structure of the inking units and printing units or the associated drives.

Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde eine neuartige Druckeinheit sowie ein neuartiges Farbwerk zu schaffen.On this basis, the present invention is based on the problem of creating a novel printing unit and a novel inking unit.

Dieses Problem wird durch eine Druckeinheit gemäß Patentanspruch 1 gelöst. Erfindungsgemäß sind innerhalb jedes Farbwerks ausschließlich drehend angetriebene Farbwerkwalzen und ausschließlich changierend angetriebene Farbwerkwalzen antriebsseitig voneinander getrennt.This problem is solved by a printing unit according to claim 1. According to the invention, exclusively rotationally driven inking rollers and exclusively iridescent inking rollers are separated on the drive side within each inking unit.

Im Sinne der hier vorliegenden Erfindung wird vorgeschlagen, eine strikte Trennung zwischen changierend angetriebenen Farbwerkwalzen und drehend angetriebenen Farbwerkwalzen innerhalb eines Farbwerks vorzunehmen. Changierantrieb und Drehantrieb innerhalb eines Farbwerks werden demnach voneinander getrennt bzw. entkoppelt. Dies hat den Vorteil, dass sich ein wesentlich einfacherer und damit kostengünstiger Aufbau für ein Farbwerk bzw. eine Druckeinheit ergibt. Der Hub bei der Changierbewegung ist dann variabel und unabhängig von der Drehzahl der Drehbewegung einstellbar.For the purposes of the present invention, it is proposed to make a strict separation between irrigating driven inking rollers and rotationally driven inking rollers within an inking unit. Traversing drive and rotary drive within an inking unit are therefore from each other disconnected or decoupled. This has the advantage that a much simpler and therefore less expensive structure for an inking unit or a printing unit results. The stroke in the traversing movement is then variable and independently of the rotational speed of the rotational movement adjustable.

Nach einer vorteilhaften Weiterbildung der Erfindung sind auch innerhalb jedes Feuchtwerks drehend angetriebene Walzen und changierend angetriebene Walzen antriebsseitig voneinander getrennt.According to an advantageous development of the invention, rotationally driven rollers and rollers driven in an alternating manner are also separated on the drive side within each dampening unit.

Das erfindungsgemäße Farbwerk für ein Druckwerk einer Druckmaschine ist im unabhängigen Patentanspruch 14 definiert.The inking unit according to the invention for a printing unit of a printing press is defined in the independent claim 14.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
einen schematisierten Ausschnitt aus einer erfindungsgemäßen Druckeinheit im Bereich eines Druckwerks nach einem ersten Ausführungsbeispiel der Erfindung;
Fig. 2:
einen schematisierten Ausschnitt aus einer erfindungsgemäßen Druckeinheit im Bereich eines Druckwerks nach einem zweiten Ausführungsbeispiel der Erfindung;
Fig. 3:
einen schematisierten Ausschnitt aus einer erfindungsgemäßen Druckeinheit im Bereich eines Druckwerks nach einem dritten Ausführungsbeispiel der Erfindung;
Fig. 4:
einen schematisierten Ausschnitt aus einer erfindungsgemäßen Druckeinheit im Bereich eines Druckwerks nach einem vierten Ausführungsbeispiel der Erfindung; und
Fig. 5:
einen schematisierten Ausschnitt aus einer erfindungsgemäßen Druckeinheit im Bereich eines Druckwerks nach einem weiteren Ausführungsbeispiel der Erfindung.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
Fig. 1:
a schematic section of a printing unit according to the invention in the region of a printing unit according to a first embodiment of the invention;
Fig. 2:
a schematic section of a printing unit according to the invention in the region of a printing unit according to a second embodiment of the invention;
3:
a schematic section of a printing unit according to the invention in the region of a printing unit according to a third embodiment of the invention;
4:
a schematic section of a printing unit according to the invention in the region of a printing unit according to a fourth embodiment of the invention; and
Fig. 5:
a schematic section of a printing unit according to the invention in the region of a printing unit according to another embodiment of the invention.

Nachfolgend wird die hier vorliegende Erfindung unter Bezugnahme auf Fig. 1 bis 5 in größerem Detail beschrieben.Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 5.

Fig. 1 zeigt einen Ausschnitt aus einem Druckwerk 10 einer Druckeinheit im Sinne der hier vorliegenden Erfindung, wobei in Fig. 1 ein Formzylinder 11, ein Feuchtwerk 12 sowie ein Farbwerk 13 dargestellt ist. Das Farbwerk 13 verfügt über eine Duktorwalze 14, die Druckfarbe aus einem Farbkasten 15 entnimmt und auf eine mit der Duktorwalze 14 zusammenwirkende Filmwalze 16 überträgt. Ausgehend von der Filmwalze 16 wird die Druckfarbe über mehrere der Filmwalze 16 nachgeschaltete Farbwerkwalzen 17, 18 und 19 sowie über auf dem Formzylinder 11 abrollende Farbauftragwalzen 20 und 21 auf den Formzylinder 11 übertragen. Wie Fig. 1 weiterhin entnommen werden kann, umfasst das Feuchtwerk 12 des Druckwerks 10 der Fig. 1 eine chrombeschichtete bzw. keramikbeschichtete Walze 22, auf die in einem Feuchtmittelvorrat 23 bereitgehaltenes Feuchtmittel aufgetragen wird, wobei die chrombeschichtete bzw. keramikbeschichtete Walze 22 das Feuchtmittel über zwei derselben nachgeordnete Walzen 24 und 25 auf den Formzylinder 11 überträgt. Wie Fig. 1 entnommen werden kann, rollt die Walze 25 auf dem Formzylinder 11 ab und wird demnach auch als Feuchtmittelauftragwalze bezeichnet. Die Walze 24 rollt hingegen auf der chrombeschichteten bzw. keramikbeschichteten Walze 22 ab.Fig. 1 shows a section of a printing unit 10 of a printing unit in the sense of the present invention, wherein in Fig. 1, a forme cylinder 11, a dampening unit 12 and an inking unit 13 is shown. The inking unit 13 has a ductor roller 14 which removes ink from an ink fountain 15 and transfers it to a film roller 16 cooperating with the ductor roller 14. Starting from the film roller 16, the ink is transferred via several of the film roller 16 downstream inking rollers 17, 18 and 19 and on the forme cylinder 11 rolling inking rollers 20 and 21 on the forme cylinder 11. As can be further seen in FIG. 1, the dampening unit 12 of the printing unit 10 of FIG. 1 comprises a chromium-coated or ceramic-coated roller 22 onto which fountain solution prepared in a dampening solution reservoir 23 is applied, wherein the chromium-coated or ceramic-coated roller 22 transfers the dampening solution two of the same downstream rollers 24 and 25 transmits to the forme cylinder 11. As can be seen in Fig. 1, the roller 25 rolls on the forme cylinder 11 and is therefore also referred to as fountain solution application roller. On the other hand, the roller 24 rolls on the chromium-coated or ceramic-coated roller 22.

Im Sinne der hier vorliegenden Erfindung wird nun vorgeschlagen, zumindest innerhalb des Farbwerks 13 drehend angetriebene Farbwerkwalzen und changierend angetriebene Farbwerkwalzen antriebsseitig voneinander zu trennen. Vorzugsweise werden auch im Feuchtwerk drehend angetriebene Walzen und changierend angetriebene Walzen des Feuchtwerks antriebseitig voneinander getrennt.For the purposes of the present invention, it is now proposed to separate at least within the inking unit 13 rotationally driven inking rollers and irons driven inking rollers on the drive side of each other. Preferably, in the dampening unit rotationally driven rollers and irretrievably driven rollers of the dampening unit are separated on the drive side.

So wirken im Sinne der hier vorliegenden Erfindung mit den drehend angetriebenen Walzen ausschließlich Drehantriebe und mit den changierend angetriebenen Walzen ausschließlich Axialantriebe zusammen. Die Trennung von Drehantrieben und Changierantrieben auf verschiedene Walzen ist konstruktiv sowie verfahrenstechnisch besonders vorteilhaft.So acting in the sense of the present invention with the rotating driven rollers exclusively rotary actuators and with the iridescent rollers driven exclusively axial drives together. The separation of rotary drives and traversing drives on different rolls is structurally and procedurally particularly advantageous.

Im Ausführungsbeispiel der Fig. 1 ist - vom Farbkasten 15 aus gesehen - der Filmwalze 16 unmittelbar eine als zentrale Gummiwalze 17 ausgebildete Farbwerkwalze nachgeordnet, wobei die zentrale Gummiwalze 17 über einen derselben zugeordneten Drehantrieb 26 drehend angetrieben wird. Ebenso wird die chrombeschichtete bzw. keramikbeschichtete Walze 22 des Feuchtwerks 12 drehend angetrieben, und zwar ausgehend von der zentralen Gummiwalze 17 über einen die zentrale Gummiwalze 17 sowie die chrombeschichtete bzw. keramikbeschichtete Walze 22 verbindenden Kettentrieb 27 oder auch Zahnriemen. Der chrombeschichteten bzw. keramikbeschichteten Walze 22 des Feuchtwerks 12 ist demnach im Ausführungsbeispiel der Fig. 1 kein separater Drehantrieb zugeordnet, vielmehr wird dieselbe über den der zentralen Gummiwalze 17 des Farbwerks 13 zugeordneten Drehantrieb 26 drehend angetrieben.In the embodiment of FIG. 1 - viewed from the ink fountain 15 from - the film roller 16 is arranged directly downstream of a trained as a central rubber roller 17 inking roller, wherein the central rubber roller 17 is rotatably driven via a rotary drive 26 associated therewith. Likewise, the chromium-coated or ceramic-coated roller 22 of the dampening unit 12 is rotationally driven, starting from the central rubber roller 17 via a chain drive 27 or toothed belt connecting the central rubber roller 17 and the chromium-coated or ceramic-coated roller 22. Accordingly, in the exemplary embodiment of FIG. 1, the chromium-coated or ceramic-coated roller 22 of the dampening unit 12 is not associated with a separate rotary drive, but instead is rotationally driven via the rotary drive 26 associated with the central rubber roller 17 of the inking unit 13.

Die auf der zentralen Gummiwalze 17 des Farbwerks 13 abrollenden Farbwerkwalzen 18 und 19, die auf der chrombeschichteten bzw. keramikbeschichteten Walze 22 des Feuchtwerks 12 abrollende Walze 24 sowie die auf dem Formzylinder 11 abrollenden Farbauftragwalzen 20 und 21 und die auf demselben abrollende Feuchtmittelauftragwalze 25 werden bedingt durch Reibung zwischen den aufeinander abrollenden Walzen bzw. Zylindern über Reibschluss bzw. Friktion mit angetrieben.The rolling on the central rubber roller 17 of the inking unit 13 inking rollers 18 and 19, on the chromium-coated or ceramic coated roller 22 of the dampening unit 12 rolling roller 24 and rolling on the forme cylinder 11 inking rollers 20 and 21 and on the same rolling dampening application roller 25 are conditional driven by friction between the rolling rolls or cylinders on friction or friction with.

Bei den in Fig. 1 schraffiert dargestellten Walzen 18, 19 und 24 handelt es sich um Changierbewegungen ausübende Walzen. So üben einerseits die Farbwerkwalzen 18 und 19 sowie andererseits zur Vergleichmäßigung des Feuchtmittelfilms auf der Feuchtmittelauftragwalze 25 die Walze 24 in axialer Richtung eine Changierbewegung aus. Hierzu sind den Walzen 18, 19 und 24 Axialantriebe zugeordnet. Hieraus folgt, dass sowohl im Farbwerk 13 als auch im Feuchtwerk 12 des Druckwerks 10 der Fig. 1 changierend angetriebene Walzen und drehend gangetriebenen Walzen antriebsseitig voneinander getrennt sind.The rollers 18, 19 and 24 shown hatched in FIG. 1 are rollers that perform traversing movements. Thus, on the one hand, the inking rollers 18 and 19 and on the other hand to equalize the dampening solution on the fountain solution application roller 25, the roller 24 in the axial direction a traversing movement out. For this purpose, the rollers 18, 19 and 24 are associated with axial drives. It follows that both in the inking unit 13 and in the dampening unit 12 of the printing unit 10 of FIG. 1 iridescent driven rollers and rotating driven rollers are driven side separated from each other.

Im Ausführungsbeispiel der Fig. 1 wird ausgehend von der zentralen Gummiwalze 17 die Farbe über zwei unabhängige Farbwalzenzüge auf den Formzylinder 11 aufgetragen. Ein erster Farbwalzenzug wird von der Farbwerkwalze 18 und der Farbauftragwalze 20 gebildet, ein zweiter Farbwalzenzug wird von der Farbwerkwalze 19 und der Farbauftragwalze 21 gebildet. Das Auftragen der Druckfarbe auf den Formzylinder 11 erfolgt hauptsächlich über den Farbwalzenzug aus der Farbwerkwalze 19 und der Farbauftragwalze 21, also über diejenige Farbauftragwalze, die in Drehrichtung des Formzylinders 11 sich unmittelbar an die Feuchtmittelauftragwalze 25 anschließt. Der Auftrag von Druckfarbe auf den Formzylinder 11 erfolgt demnach bevorzugt über die dem Feuchtwerk 12 zugewandte Farbauftragwalze 21. Über die Farbauftragwalze 20 des anderen Farbwalzenzugs wird auch Druckfarbe auf den Formzylinder 11 aufgetragen, diese Farbauftragwalze 20 dient jedoch auch der Glättung des über die Farbauftragwalze 21 auf den Formzylinder 11 aufgetragenen Farbfilms.In the exemplary embodiment of FIG. 1, starting from the central rubber roller 17, the ink is applied to the forme cylinder 11 via two independent ink roller trains. A first inking roller train is formed by the inking unit roller 18 and the inking roller 20, a second ink roller train is formed by the inking unit roller 19 and the inking roller 21. The application of the ink to the forme cylinder 11 is carried out mainly via the ink roller train from the inking unit roller 19 and the inking roller 21, ie via that inking roller, which adjoins directly in the direction of rotation of the forme cylinder 11 to the fountain solution application roller 25. The order of printing ink on the forme cylinder 11 is thus preferably on the dampening unit 12 facing inking roller 21. About the inking roller 20 of the other color roller train and ink is applied to the forme cylinder 11, but this inking roller 20 also serves the smoothing of the inking roller 21 on the form cylinder 11 applied color film.

An dieser Stelle sei darauf hingewiesen, dass es sich bei der Filmwalze 16 um eine relativ harte Walze mit einer strukturierten Oberfläche handelt. Bei der zentralen Gummiwalze 17 des Farbwerks 13 handelt es sich um eine relativ weiche Walze. Die eine Changierbewegung ausübenden Farbwerkswalzen 18 und 19 sind wiederum relativ hart, die Farbauftragwalzen 20 und 21 relativ weich ausgebildet. Im Feuchtwerk 12 handelt es sich bei der chrombeschichteten bzw. keramikbeschichteten Walze 22 um eine relativ harte Walze, die Walzen 24 und 25 des Feuchtwerks 12 sind hingegen relativ weich ausgeführt. Daraus folgt unmittelbar, dass die eine Changierbewegung ausübenden Walzen 18 und 19 des Farbwerks 13 relativ hart ausgebildet sind, die eine Changierbewegung ausübende Walze 24 des Feuchtwerks 12 hingegen relativ weich ausgebildet ist.At this point, it should be noted that the film roll 16 is a relatively hard roll having a textured surface. The central rubber roller 17 of the inking unit 13 is a relatively soft roller. The inking rollers 18 and 19 performing a traversing movement are in turn relatively hard, the inking rollers 20 and 21 are formed relatively soft. In the dampening unit 12, the chromium-coated or ceramic-coated roller 22 is a relatively hard roller, whereas the rollers 24 and 25 of the dampening unit 12 are made relatively soft. It follows immediately that the traversing movement performing rollers 18 and 19 of the inking unit 13 are formed relatively hard, the traversing movement performing a roller 24 of the dampening unit 12, however, is relatively soft.

Weiterhin sei darauf hingewiesen, dass Axialantriebe zur Bereitstellung der Changierbewegungen der Walzen 18, 19 und 24 vorzugsweise als Kurbelwellenantriebe mit drehzahlgeführten Gleichstrommotoren ausgebildet sind, die eine Änderung der Changierfrequenz sowie des Changierhubs ermöglichen. Die Changierfrequenz liegt vorzugsweise zwischen 3 Hz und 4 Hz, der Changierhub im Bereich einiger Millimeter. Drehantriebe sind hingegen vorzugsweise als Drehstromantriebe ausgeführt.Furthermore, it should be noted that axial drives for providing the traversing movements of the rollers 18, 19 and 24 are preferably designed as crankshaft drives with speed-controlled DC motors, which allow a change in the traversing frequency and the traverse stroke. The traversing frequency is preferably between 3 Hz and 4 Hz, the traverse stroke in the range of a few millimeters. Rotary actuators, however, are preferably designed as three-phase drives.

Das Druckwerk 10 bzw. das Farbwerk 13 der Fig.1 stellt ein Grundmodul dar, welches im Sinne der hier vorliegenden Erfindung durch weitere Bauteile erweiterbar ist. So zeigen Fig. 2 bis 5 Ausbaustufen der Anordnung gemäß Fig. 1, die jedoch von demselben erfindungsgemäßen Grundprinzip Gebrauch machen. Zur Vermeidung unnötiger Wiederholungen werden daher nachfolgend für gleiche Baugruppen gleiche Bezugsziffern verwendet und es wird lediglich auf die Details eingegangen, welche die Ausführungsbeispiele der Fig. 2 bis 5 vom Ausführungsbeispiel der Fig. 1 unterscheiden.The printing unit 10 or the inking unit 13 of FIG. 1 represents a basic module which can be extended by further components in the sense of the present invention. Thus, Figs. 2 to 5 expansion stages of the arrangement of FIG. 1, but make use of the same inventive principle. To avoid unnecessary repetitions, therefore, the same reference numerals are used below for the same components and it is only discussed the details that distinguish the embodiments of FIGS. 2 to 5 from the embodiment of FIG.

Im Ausführungsbeispiel der Fig. 2 sind zwischen der Filmwalze 16 und der zentralen Gummiwalze 17 zwei weitere Farbwerkwalzen 28 und 29 positioniert. Die Farbwerkwalze 28 rollt auf der Filmwalze 16 und die Farbwerkwalze 29 auf der zentralen Gummiwalze 17 ab. Bei der Farbwerkwalze 28 handelt es sich um eine relativ weiche Farbwerkswalze, bei der Walze 29 hingegen um eine relativ harte Farbwerkswalze. Durch die Anordnung der Walzen 28 und 29 zwischen der Filmwalze 16 und der zentralen Gummiwalze 17 kann der Farbauftrag auf den Formzylinder 11 optimiert werden.In the embodiment of Fig. 2 17 two further inking rollers 28 and 29 are positioned between the film roller 16 and the central rubber roller. The inking roller 28 rolls on the film roller 16 and the inking roller 29 on the central rubber roller 17 from. In the inking unit roller 28 is a relatively soft inking roller, in the roller 29, however, a relatively hard inking roller. By arranging the rollers 28 and 29 between the film roller 16 and the central rubber roller 17, the ink application to the forme cylinder 11 can be optimized.

Im Ausführungsbeispiel der Fig. 3 schließen sich an die zentrale Gummiwalze 17 nicht lediglich zwei Farbwalzenzüge an, sondern vielmehr drei, sodass die Druckfarbe über eine zusätzliche Farbauftragwalze 30 auf den Formzylinder 11 aufgetragen wird. Zwischen der Farbauftragwalze 30 und der zentralen Gummiwalze 17 ist auch für den dritten Farbwaizenzug eine Farbwerkwalze 31 vorgesehen, die eine Changierbewegung ausübt.In the embodiment of FIG. 3, close to the central rubber roller 17 not only two color roller trains, but three, so that the ink is applied via an additional inking roller 30 on the forme cylinder 11. Between the inking roller 30 and the central rubber roller 17th is also for the third Farbwaizenzug an inking roller 31 is provided, which exerts a traversing movement.

Im Ausführungsbeispiel der Fig. 4 wirken mit den changierenden Farbwerkwalzen 18 und 19 weitere Farbwerkwalzen 32, 33, 34 und 35 zusammen, wobei die Farbwerkwalzen 32 und 33 als changierende Walzen ausgebildet sind und auf der zentralen Gummiwalze 17 abrollen, und wobei die Farbwerkwalzen 34 und 35 mit jeweils zwei changierenden Farbwerkwalzen 18 und 32 bzw. 19 und 33 zusammenwirken.In the embodiment of FIG. 4 cooperate with the iridescent inking rollers 18 and 19 more inking rollers 32, 33, 34 and 35, wherein the inking rollers 32 and 33 are formed as iridescent rollers and roll on the central rubber roller 17, and wherein the inking rollers 34 and 35 cooperate with two iridescent inking rollers 18 and 32 and 19 and 33, respectively.

Fig. 5 zeigt eine Ausbaustufe der Erfindung, die wiederum der Anordnung der Fig. 1 am nächsten kommt, und bei der mit lediglich einer der beiden changierenden Farbwerkwalzen 19 die Farbwerkwalzen 33 sowie 35 zusammenwirken.Fig. 5 shows an embodiment of the invention, in turn, the arrangement of Fig. 1 comes closest, and cooperate with only one of the two iridescent inking rollers 19, the inking rollers 33 and 35.

Die Drehantriebe der drehend angetriebenen Walzen und die Axialantriebe der changierend angetriebenen Walzen von Farbwerk und Feuchtwerk sind vorzugsweise als Einzelmotorenantriebe ausgebildet. Die drehend angetriebenen Walzen und die changierend angetriebenen Walzen von Farbwerk und gegebenenfalls Feuchtwerk können auch jeweils über Zahnräderzüge angetrieben werden.The rotary drives of the rotationally driven rollers and the axial drives of iridescent driven rollers of inking and dampening are preferably designed as single motor drives. The rotationally driven rollers and the irresistibly driven rollers of the inking unit and optionally dampening unit can also be driven in each case via gear trains.

Zusätzlich zu den in Fig. 2 bis 5 gezeigten Ausbaustufen sind selbstverständlich weitere Kombinationen dieser Ausbaustufen vorstellbar, die vom erfindungsgemä-ßen Grundprinzip Gebrauch machen. Weiterhin kann die Erfindung auch bei Druckwerken zum Einsatz kommen, die kein Feuchtwerk umfassen.In addition to the expansion stages shown in FIGS. 2 to 5, it goes without saying that further combinations of these expansion stages are conceivable which make use of the basic principle according to the invention. Furthermore, the invention can also be used in printing units which do not comprise a dampening unit.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Druckwerkprinting unit
1111
Formzylinderform cylinder
1212
Feuchtwerkdampening
1313
Farbwalzeink roller
1414
Duktorwalzeduct roller
1515
Farbkastenpaintbox
1616
Filmwalzefilm roller
1717
FarbwerkwalzeInking roller
1818
FarbwerkwalzeInking roller
1919
FarbwerkwalzeInking roller
2020
FarbauftragwalzeInking roller
211211
FarbauftragwalzeInking roller
2222
Walzeroller
2323
FeuchtmittelvorratDampening solution supply
2424
Walzeroller
2525
Walzeroller
2626
Drehantriebrotary drive
2727
Kennentriebknow drive
2828
FarbwerkwalzeInking roller
2929
FarbwerkwalzeInking roller
3030
FarbauftragwalzeInking roller
3131
FarbwerkwalzeInking roller
3232
FarbwerkwalzeInking roller
3333
FarbwerkwalzeInking roller
3434
FarbwerkwalzeInking roller
3535
FarbwerkwalzeInking roller

Claims (20)

  1. A printing unit having at least one printing system (10), wherein the or each printing system (10) has at least one forme cylinder (11), a transfer cylinder, an inking system (13) and also preferably a dampening system (12), wherein the inking system (13) of each printing system (10) applies printing ink to a forme cylinder (11) of the respective printing system (10) in such a way that a ductor roller (14) of an inking system (13) takes up printing ink held ready in an ink duct (15) and by way of a film roller (16) cooperating with the ductor roller (14), by way of further inking-system rollers (17, 18, 19, 31, 32, 33) arranged downstream of the film roller (16) and by way of at least one ink-applying roller (20, 21, 30) rolling off on the forme cylinder (11) applies it to the forme cylinder (11) of the respective printing system (10), characterised in that within each inking system (13) inking-system rollers (17) that are driven solely in a rotating manner and inking-system rollers (18, 19, 31, 32, 33) that are driven solely in a reciprocating manner are separated from each other on the drive side.
  2. A printing unit according to claim 1, characterised in that a rotary drive (26) is associated with the or each inking-system roller (17) of an inking system (13) that is driven in a rotating manner.
  3. A printing unit according to claim 1 or 2, characterised in that an axial drive is associated with the or each inking-system roller (18, 19, 31, 32, 33) of an inking system (13) that is driven in a reciprocating manner.
  4. A printing unit according to claim 3, characterised in that arranged within each inking system (13) downstream of the film roller (16) either directly or with intermediate arrangement of at least one further inking-system roller (18, 19) there is an inking-system roller that is formed as a central rubber roller (17) and is driven in a rotating manner, wherein starting from the central rubber roller (17) the printing ink can be applied to the forme cylinder (11) by way of at least two inking-roller trains, wherein each inking-roller train consists in each case of an inking-system roller (18, 19, 31) that rolls in on the central rubber roller (17) and is driven in a reciprocating manner and an ink-applying roller (20, 21, 30) that rolls off on the forme cylinder (11).
  5. A printing unit according to claim 4, characterised in that within each inking-roller train of an inking system (13) the inking-system roller (18, 19, 31) that is driven in a reciprocating manner is in rolling contact with the ink-applying roller (20, 21, 30).
  6. A printing unit according to one or more of claims 1 to 5, characterised in that within each dampening system (12) rollers (22) that are driven in a rotating manner and rollers (24) that are driven in a reciprocating manner are separated from each other on the drive side.
  7. A printing unit according to claim 6, characterised in that a rotary drive (26) is associated with the or each roller (22) of a dampening system (12) that is driven in a rotating manner and an axial drive is associated with the or each roller (24) of a dampening system (12) that is driven in a reciprocating manner.
  8. A printing unit according to one or more of claims 1 to 7, characterised in that the dampening system (12) of each printing system (10) applies a dampening agent to the forme cylinder (11) of the printing system (10), wherein the dampening system (12) has a chromium-coated or ceramic-coated roller (22) that takes up dampening agent from a dampening-agent supply (23), and wherein positioned between the chromium-coated or ceramic-coated roller (22) and the forme cylinder (11) there are two rollers (24, 25) that roll off on each other, namely a roller (25) for applying dampening agent that is in rolling contact with the forme cylinder (11) and a roller (24) that is in rolling contact with the chromium-coated or ceramic-coated roller (22).
  9. A printing unit according to [one or more of] claim[s] 8, characterised in that the chromium-coated or ceramic-coated roller (22) is driven in a rotating manner and the roller (24) that is in rolling contact with the chromium-coated or ceramic-coated roller (22) is driven in a reciprocating manner.
  10. A printing unit according to one or more of claims 1 to 9, characterised in that one roller (25) for applying dampening agent and at least two rollers (20, 21, 30) for applying ink roll off on the forme cylinder (11) of each printing system (10), wherein the printing ink is applied to the forme cylinder (11) mainly by way of the ink-applying roller (21) following the roller (25) for applying dampening agent in the direction of rotation of the forme cylinder (11), and wherein the or each further ink-applying roller (20, 30) is used mainly to smooth the printing ink on the forme cylinder (11).
  11. A printing unit according to one of more of claims 1 to 10, characterised in that the central rubber roller (17) of the inking system (13) of a printing system (10) and the chromium-coated or ceramic-coated roller (22) of the dampening system (12) of the same printing system (10) are driven by a common rotary drive (26) and for this purpose are connected together by way of a toothed belt or chain drive (27).
  12. A printing unit according to one or more of claims 1 to 11, characterised in that the rotary drives (26) of the rollers (17; 22) that are driven in a rotating manner and the axial drives of the rollers (18, 19, 31, 32, 33; 24) that are driven in a reciprocating manner of the inking system (13) and, if applicable, the dampening system (12) are formed as individual motor drives.
  13. A printing unit according to one or more of claims 1 to 11, characterised in that on the one hand the rollers (17; 22) that are driven in a rotating manner and on the other hand the rollers (18, 19, 31, 32, 33; 24) that are driven in a reciprocating manner of the inking system (13) and, if applicable, the dampening system (12) can be driven by way of respective toothed-wheel trains.
  14. An inking system (13) for a printing system (10) of a printing machine, wherein the inking system (13) applies printing ink to a forme cylinder (11) of the printing system (10) in such a way that a ductor roller (14) takes up printing ink held ready in an ink duct (15) and by way of a film roller (16) cooperating with the ductor roller (14), by way of further inking-system rollers (17, 18, 19, 31, 32, 33) arranged downstream of the film roller (16) and by way of at least one ink-applying roller (20, 21, 30) rolling off on the forme cylinder (11) applies it to the forme cylinder (11), characterised in that inking-system rollers (17) that are driven solely in a rotating manner and inking-system rollers (18, 19, 31, 32, 33) that are driven solely in a reciprocating manner are separated from each other on the drive side.
  15. An inking system (13) according to claim 14, characterised in that a rotary drive (26) is associated with the or each inking-system roller (17) that is driven in a rotating manner.
  16. An inking system (13) according to claim 14 or 15, characterised in that an axial drive is associated with the or each inking-system roller (18, 19, 31, 32, 33) that is driven in a reciprocating manner.
  17. An inking system (13) according to one or more of claims 14 to 16, characterised in that arranged downstream of the film roller (16) either directly or with intermediate arrangement of at least one further inking-system roller (18, 29) there is an inking-system roller that is formed as a central rubber roller (17) and is driven in a rotating manner, wherein starting from the central rubber roller (17) the printing ink can be applied to the forme cylinder (11) by way of at least two inking-roller trains, wherein each inking-roller train consists in each case of an inking-system roller (18, 19, 31) that rolls off on the central rubber roller (17) and is driven in a reciprocating manner and an ink-applying roller (20, 21, 30) that rolls off on the forme cylinder (11).
  18. An inking system (13) according to claim 17, characterised in that within each inking-roller train the inking-system roller (18, 19, 31) that is driven in a reciprocating manner is in rolling contact with the ink-applying roller (20, 21, 30).
  19. An inking system (13) according to one or more of claims 14 to 17, characterised in that the rotary drives (26) of the rollers (17, 22) that are driven in a rotating manner and the axial drives of the rollers (18, 19, 24, 31, 32, 33) that are driven in a reciprocating manner are formed as individual motor drives.
  20. An inking system according to one or more of claims 14 to 17, characterised in that on the one hand the rollers (17, 22) that are driven in a rotating manner and on the other hand the rollers (18, 19, 24, 31, 32, 33) that are driven in a reciprocating manner can be driven by way of respective toothed-wheel trains.
EP05017832A 2004-08-19 2005-08-17 Printing unit and inking units with inking rollers and distribution roller being driven independently Expired - Fee Related EP1627738B1 (en)

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DE102004040150A1 (en) 2006-02-23
CN100415514C (en) 2008-09-03
US7568426B2 (en) 2009-08-04
DE502005002545D1 (en) 2008-03-06
EP1627738A1 (en) 2006-02-22
US20060037504A1 (en) 2006-02-23
JP2006056257A (en) 2006-03-02
CN1736708A (en) 2006-02-22

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