EP0659557B1 - Device for metering a liquid in an offset printing machine particularly a lacquering device - Google Patents

Device for metering a liquid in an offset printing machine particularly a lacquering device Download PDF

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Publication number
EP0659557B1
EP0659557B1 EP94119151A EP94119151A EP0659557B1 EP 0659557 B1 EP0659557 B1 EP 0659557B1 EP 94119151 A EP94119151 A EP 94119151A EP 94119151 A EP94119151 A EP 94119151A EP 0659557 B1 EP0659557 B1 EP 0659557B1
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EP
European Patent Office
Prior art keywords
roller
metering
forme cylinder
media
offset printing
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EP94119151A
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German (de)
French (fr)
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EP0659557A1 (en
Inventor
Manfred Herold
Georg Hartung
Hans-Willy Schütz
Ullrich Dr. Jung
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Manroland AG
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MAN Roland Druckmaschinen AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08—Print finishing devices, e.g. for glossing prints

Definitions

  • the invention relates to a device for dosing liquid media of different viscosities in offset printing machines. It is preferably used for dosing liquid media for application to a substrate in coating units.
  • the device is suitable for processing low-viscosity ( ⁇ 50 s run-out time 4mm cup) media, e.g. Dispersion varnish on an aqueous basis or for processing higher viscosity (> 50 s run-out time 4mm cup) media, e.g. Bronze / effect printing ink with a defined pigment content, e.g. Gold lacquer.
  • the medium to be applied here lacquer
  • the medium to be applied is metered using a storage container, a rotating immersion roller, a metering roller, a painting cylinder and a pressure cylinder.
  • a doctor blade can be assigned to the dip roller.
  • a chambered doctor blade is known from EP 0 071 180 A1, which is essentially formed by a housing with side walls and doctor blades attached to the housing, also called doctor blades.
  • the doctor blades are supported on the application roller and the liquid is transferred to the screened application roller via the chamber formed in this way.
  • the chambered doctor blade is pivotally mounted in a holder arranged above the application roller and can be adjusted to the application roller by a working cylinder acting on the holder.
  • an application unit for printing presses which is suitable for high and low viscosity media.
  • the metering is carried out essentially by means of a profiled scoop roller, doctor blade, transfer roller and smoothing roller or applicator roller and a forme cylinder with a doctor blade blade.
  • the object of the invention is to provide a device for metering liquid media of different viscosities, which ensures universal metering of the medium to be applied in a defined layer thickness.
  • the solution according to the invention consists of a preferably interchangeable metering system which is used in accordance with the respective application. It allows the quick change of immersion roller / metering roller (1st assembly) and chamber doctor blade with applicator roller (2nd assembly).
  • the 1st and 2nd assemblies can also be installed permanently assigned to the forme cylinder.
  • the roller system consisting of immersion roller and metering roller with different surface hardness is used. Both rollers can alternately have an elastomer cover or be designed as a steel roller. The harder roller in each case has a smooth metal surface or has a rastered surface.
  • a chamber doctor blade and a screened application roller are used. The correct metering takes place through the negatively positioned doctor blade of the chamber doctor blade and the grid structure of the applicator roller. The metered quantity can be changed, for example, by exchanging the screened application roller and using a new roller with a modified screen structure.
  • the advantage of this solution is that the optional replacement of the assemblies ensures an exact layer thickness for media with a lower and higher viscosity range.
  • Another advantage is that when processing low-viscosity media, the metering roller and the immersion roller can be designed to be interchangeable. The different surface hardness allows a variable dosing range (with low viscosity) even without using the chamber doctor blade. In the case of the already described embodiment of two modules which are permanently assigned to the forme cylinder, each can be turned on and off with respect to the forme cylinder.
  • the device can be the first printing unit of an offset printing machine for print finishing, e.g. Painting or top coat application, upstream, arranged between the printing units or arranged downstream of the printing units.
  • the solution according to the invention is suitable for spot painting (recessed painting) and for full-area painting.
  • a further finishing device can be arranged upstream or downstream of the device according to the invention, e.g. another painting unit for full-surface painting or a laminating or embossing device.
  • the device according to the invention is arranged downstream of the last printing unit in an offset printing press and is used for inline coating of printing materials.
  • the device consists of a sheet-guiding cylinder 1, which is associated with a forme cylinder 2 with attached transfer form.
  • This forme cylinder 2 is in contact with a metering roller 3 with which the paint to be processed is metered.
  • the metering roller 3 is in contact with an immersion roller 4.
  • the immersion roller 4 runs in a reservoir 5 filled with lacquer and the metering roller 3 is coupled to a drive. Both rollers 3, 4 have a different surface hardness.
  • a smaller layer thickness is transferred to the forme cylinder 2 according to the principle of ink splitting in the case of a harder metering roller 3, and a larger layer thickness is transferred to the forme cylinder 2 when a softer metering roller 3 is used, with a defined auxiliary force.
  • metering roller 3 and immersion roller 4 are replaced by an anilox roller 3 ', for example a ceramic roller, and a chamber doctor blade 8.
  • the chambered doctor blade 8 has a housing which is rotatably arranged on the pivot bearing 9 and is supported with the doctor blade blades on the circumference of the anilox roller 3 '.
  • One doctor blade seals the chamber to the anilox roller 3 'as a positive doctor blade and the other doctor blade doses as a negative doctor blade.
  • the housing of the chambered doctor blade 9 can be rotated on both sides in a pivot bearing 9 arranged on the side frames added and can be provided to the anilox roller 3 '.
  • the chambered doctor blade 8 has a device for feeding and discharging the medium to be processed, which will not be described further here.
  • the operation of the device is as follows: If a low-viscosity lacquer is to be processed, the immersion roller 4 and the metering roller 3 are assigned to the forme cylinder 2.
  • the metering roller 3 with a greater surface hardness can have a smooth or rastered surface, while the dipping roller 4 is provided with a softer surface, an elastomer cover.
  • the low-viscosity paint to be processed is conveyed by the immersion roller 4 via the storage container 5, so that a paint film forms on the metering roller 3.
  • the metering roller 3 can be added to the immersion roller 4 or to the forme cylinder 2.
  • the metering takes place according to the scoop roller principle and the metering roller 3 conveys the lacquer to the forme cylinder 2, which transfers the lacquer to the printing material in connection with the impression cylinder 1.
  • the immersion roller 4 is removed and the immersion roller 4 and the metering roller 3 are replaced by a chamber doctor blade 8 and an anilox roller 3 '.
  • the doctor blade 8 is received in a pivot bearing 9.
  • the paint is now metered through the negatively positioned working doctor blade and the grid structure of the application roller 3 '.
  • the meterable amount of paint can be changed by replacing the anilox roller 3 'by using an anilox roller 3' with a modified raster structure.
  • the forme cylinder 2 is associated with a metering roller 3 with immersion roller 4 and storage container 5 as the 1st assembly, and preferably an anilox roller 3 'with a doctor blade 8 as the 2nd assembly with the first and / or second quadrant of the forme cylinder 2 assigned.
  • the 1st assembly (metering roller 3, immersion roller 4) with the forme cylinder 2 in the case of low-viscosity media Brought in contact.
  • the 1st assembly is parked by the forme cylinder 2, but remains in its bearings (not shown). The second assembly is brought into contact with the forme cylinder 2 by turning on the anilox roller 3 '.
  • the chambered doctor blade 8 is received, for example, in a swivel bearing 9 and lies with the doctor blade on the outer surface of the forme cylinder 2.
  • the chambered doctor blade 8 can be mounted in a cross-member (not shown) fixed to the frame and can be turned on and off by this to the anilox roller 3 '.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Methods (AREA)
  • Ink Jet (AREA)

Abstract

The invention relates to an apparatus for the metering of liquid media, especially varnish, of differing viscosity in an offset printing machine. Exchangeable metering subassemblies are assigned to a form cylinder. The first metering subassembly provided for processing low-viscosity media consists of a reservoir, a dipping roller, a metering roller and the form cylinder. The second metering subassembly for processing higher-viscosity media consists of a chamber doctor, a screened applicator roller and the form cylinder. In a further version, both metering subassemblies are assigned permanently to the form cylinder. Depending on the media to be processed, the necessary subassemblies are engaged with the form cylinder and the other subassembly is disengaged from the form cylinder.

Description

Die Erfindung betrifft eine Vorrichtung zum Dosieren flüssiger Medien unterschiedlicher Viskosität in Offsetdruckmaschinen. Sie dient vorzugsweise der Dosierung flüssiger Medien zum Auftragen auf einen Bedruckstoff in Lackiereinheiten. Die Einrichtung ist geeignet für die Verarbeitung von niedrigviskoser (≤ 50 s Auslaufzeit 4mm-Becher) Medien, z.B. Dispersionslack auf wässriger Basis oder für die Verarbeitung höherviskoser (> 50 s Auslaufzeit 4mm-Becher) Medien, z.B. Bronze/Effektdruckfarbe mit einem definierten Pigmentanteil, z.B. Goldlack.The invention relates to a device for dosing liquid media of different viscosities in offset printing machines. It is preferably used for dosing liquid media for application to a substrate in coating units. The device is suitable for processing low-viscosity (≤ 50 s run-out time 4mm cup) media, e.g. Dispersion varnish on an aqueous basis or for processing higher viscosity (> 50 s run-out time 4mm cup) media, e.g. Bronze / effect printing ink with a defined pigment content, e.g. Gold lacquer.

Zum Dosieren flüssiger Medien sind verschiedene Lösungen bekannt. Gemäß der DE 3 324 096 C2 erfolgt die Dosierung des aufzutragenden Mediums, hier Lack, unter Verwendung eines Vorratsbehälters, einer umlaufenden Tauchwalze, einer Dosierwalze, einem Lackierzylinder sowie einem Druckzylinder. Dabei kann der Tauchwalze beispielsweise gemäß DE 3 941 571 A1 ein Rakelblatt zugeordnet werden.Various solutions are known for dosing liquid media. According to DE 3 324 096 C2, the medium to be applied, here lacquer, is metered using a storage container, a rotating immersion roller, a metering roller, a painting cylinder and a pressure cylinder. According to DE 3 941 571 A1, a doctor blade can be assigned to the dip roller.

Aus der EP 0 071 180 A1 ist eine Kammerrakel bekannt, die im wesentlichen durch ein Gehäuse mit Seitenwänden und am Gehäuse befestigte Rakelblätter, auch Rakelmesser genannt, gebildet wird. Die Rakelblätter stützen sich auf der Auftragwalze ab und über die so gebildete Kammer wird die Flüssigkeit auf die gerasterte Auftragwalze übertragen. Die Kammerrakel ist dabei in einer oberhalb der Auftragwalze angeordneten Halterung schwenkbar gelagert und durch einen an die Halterung einwirkenden Arbeitszylinder an die Auftragwalze anstellbar.A chambered doctor blade is known from EP 0 071 180 A1, which is essentially formed by a housing with side walls and doctor blades attached to the housing, also called doctor blades. The doctor blades are supported on the application roller and the liquid is transferred to the screened application roller via the chamber formed in this way. The chambered doctor blade is pivotally mounted in a holder arranged above the application roller and can be adjusted to the application roller by a working cylinder acting on the holder.

Nachteilig bei diesen Lösungen ist es, daß diese bei unterschiedlich viskosen Medien keine exakte Dosierung (Erzeugung einer definierten Schichtdicke) des aufzutragenden Mediums gewährleisten. Somit sind die bekannten Lösungen nicht universell zum Aufbringen der jeweils verwendeten Medien auf den Bedruckstoff einsetzbar.A disadvantage of these solutions is that they do not ensure exact metering (generation of a defined layer thickness) of the medium to be applied in the case of differently viscous media. Thus, the known solutions cannot be used universally for applying the media used in each case to the printing material.

Gemäß der DE 3 906 648 A1 ist ein Auftragwerk für Druckmaschinen bekannt, das für hoch- und niedrigviskose Medien geeignet ist. Die Dosierung erfolgt dabei im wesentlichen mittels profilierter Schöpfwalze, Rakelblatt, Übertragwalze und Glättwalze oder Auftragwalze und einem mit Näpfchen versehenen Formzylinder mit Rakelblatt.According to DE 3 906 648 A1 an application unit for printing presses is known which is suitable for high and low viscosity media. The metering is carried out essentially by means of a profiled scoop roller, doctor blade, transfer roller and smoothing roller or applicator roller and a forme cylinder with a doctor blade blade.

Diese Ausführungen sind konstruktiv aufwendig, insbesondere bei Verwendung von Glättwälzen.These designs are structurally complex, especially when using smoothing rollers.

Aufgabe der Erfindung ist es, eine Vorrichtung zum Dosieren flüssiger Medien unterschiedlicher Viskosität zu schaffen, die universell eine Dosierung des jeweils in definierter Schichtdicke aufzutragenden Mediums gewährleistet.The object of the invention is to provide a device for metering liquid media of different viscosities, which ensures universal metering of the medium to be applied in a defined layer thickness.

Gelöst wird dies durch den kennzeichnenden Teil des Anspruchs 1. Weiterbildungen ergeben sich aus den Unteransprüchen.This is solved by the characterizing part of claim 1. Further developments result from the subclaims.

Die erfindungsgemäße Lösung besteht aus einem vorzugsweise austauschbaren Dosiersystem, das dem jeweiligen Anwendungsfall entsprechend zum Einsatz kommt. Sie gestattet den Schnellwechsel von Tauchwalze/Dosierwalze (1. Baugruppe) und Kammerrakel mit Auftragwalze (2. Baugruppe). In einer weiteren Ausführung kann die 1. und 2. Baugruppe auch fest dem Formzylinder zugeordnet installiert sein.The solution according to the invention consists of a preferably interchangeable metering system which is used in accordance with the respective application. It allows the quick change of immersion roller / metering roller (1st assembly) and chamber doctor blade with applicator roller (2nd assembly). In a further embodiment, the 1st and 2nd assemblies can also be installed permanently assigned to the forme cylinder.

Bei Verarbeitung niedrigviskoser Medien (≤ 50 s Auslaufzeit 4mm-Becher) kommt das Walzensystem, bestehend aus Tauchwalze und Dosierwalze mit jeweils unterschiedlicher Oberflächenhärte zum Einsatz. Beide Walzen können abwechselnd einen Elastomerbezug aufweisen oder als Stahlwalze ausgeführt sein. Die jeweils härtere Walze besitzt dabei eine glatte Metalloberfläche oder weist eine gerasterte Oberfläche auf. Bei Verarbeitung höherviskoser Medien (> 50 s Auslaufzeit 4mm-Becher) kommt eine Kammerrakel und eine gerasterte Auftragwalze zum Einsatz. Durch das negativ angestellte Rakelblatt der Kammerrakel und die Rasterstruktur der Auftragwalze erfolgt die korrekte Dosierung. Eine Veränderung der dosierten Menge ist beispielsweise durch Austausch der gerasterten Auftragwalze und Einsatz einer neuen Walze mit veränderter Rasterstruktur möglich.When processing low-viscosity media (≤ 50 s run-out time 4mm cup), the roller system consisting of immersion roller and metering roller with different surface hardness is used. Both rollers can alternately have an elastomer cover or be designed as a steel roller. The harder roller in each case has a smooth metal surface or has a rastered surface. When processing higher viscosity media (> 50 s run-down time 4mm cup) a chamber doctor blade and a screened application roller are used. The correct metering takes place through the negatively positioned doctor blade of the chamber doctor blade and the grid structure of the applicator roller. The metered quantity can be changed, for example, by exchanging the screened application roller and using a new roller with a modified screen structure.

Der Vorteil dieser Lösung ist, daß durch den wahlweisen Austausch der Baugruppen eine exakte Schichtstärke für Medien mit niederem und höherem Viskositätsbereich gewährleistet wird. Weiterer Vorteil ist, daß bei Verarbeitung niedrigviskoser Medien die Dosierwalze sowie die Tauchwalze untereinander austauschbar ausgebildet werden können. Die unterschiedliche Oberflächenhärte läßt bereits ohne Verwendung der Kammerrakel einen variablen Dosierbereich (bei niederer Viskosität) zu. Bei der bereits beschriebenen Ausführung von zwei fest dem Formzylinder zugeordneten Baugruppen ist jede zum Formzylinder an- und abstellbar.The advantage of this solution is that the optional replacement of the assemblies ensures an exact layer thickness for media with a lower and higher viscosity range. Another advantage is that when processing low-viscosity media, the metering roller and the immersion roller can be designed to be interchangeable. The different surface hardness allows a variable dosing range (with low viscosity) even without using the chamber doctor blade. In the case of the already described embodiment of two modules which are permanently assigned to the forme cylinder, each can be turned on and off with respect to the forme cylinder.

Die Einrichtung kann dabei dem ersten Druckwerk einer Offsetdruckmaschine zur Druckveredelung, z.B. Lackieren oder Deckschichtenauftrag, vorgeordnet, zwischen den Druckwerken angeordnet oder den Druckwerken nachgeordnet sein. Die erfindungsgemäße Lösung eignet sich zur Spotlackierung (ausgespartes Lackieren) und zum vollflächigen Lackieren. Ebenso kann der erfindungsgemäßen Einrichtung eine weitere Veredelungseinrichtung vor- oder nachgeordnet sein, z.B. eine weitere Lackiereinheit zum vollflächigen Lackieren oder eine Kaschier- oder Prägeeinrichtung.The device can be the first printing unit of an offset printing machine for print finishing, e.g. Painting or top coat application, upstream, arranged between the printing units or arranged downstream of the printing units. The solution according to the invention is suitable for spot painting (recessed painting) and for full-area painting. Likewise, a further finishing device can be arranged upstream or downstream of the device according to the invention, e.g. another painting unit for full-surface painting or a laminating or embossing device.

Durch die erfindungsgemäße Einrichtung läßt sich ein größerer Bereich von Viskosität in der gewünschten Schichtdicke auf einer Auftragwalze korrekt dosieren.With the device according to the invention, a larger range of viscosity in the desired layer thickness can be correctly metered on an application roller.

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

Fig. 1
die Dosiereinrichtung für niedrigviskose Medien,
Fig. 2
die Dosiereinrichtung für höherviskose Medien.
The invention will be explained in more detail using an exemplary embodiment. Show:
Fig. 1
the dosing device for low-viscosity media,
Fig. 2
the dosing device for higher viscosity media.

In einer Offsetdruckmaschine ist dem letzten Druckwerk die erfindungsgemäße Einrichtung nachgeordnet und dient der Inline-Lackierung von Bedruckstoffen. Die Einrichtung besteht aus einem bogenführenden Zylinder 1, dem ein Formzylinder 2 mit befestigter Übertragungsform zugeordnet ist. Dieser Formzylinder 2 steht in Kontakt mit einer Dosierwalze 3 mit der der zu verarbeitende Lack dosiert wird. Für die Dosierung niedrigviskoser Lacke (≤ 50 s Auslaufzeit 4mm-Becher) steht die Dosierwalze 3 in Kontakt mit einer Tauchwalze 4. Die Tauchwalze 4 läuft in einem mit Lack gefüllten Vorratsbehälter 5 und die Dosierwalze 3 ist mit einem Antrieb gekoppelt. Beide Walzen 3, 4 weisen eine unterschiedliche Oberflächenhärte auf. Je nach den Anforderungen an die Schichtdicke wird nach dem Prinzip der Farbspaltung bei einer härteren Dosierwalze 3 eine kleinere Schichtdicke an den Formzylinder 2 übertragen und bei Verwendung einer weicheren Dosierwalze 3 eine größere Schichtdicke an den Formzylinder 2 übertragen, bei definierter Beistellkraft.The device according to the invention is arranged downstream of the last printing unit in an offset printing press and is used for inline coating of printing materials. The device consists of a sheet-guiding cylinder 1, which is associated with a forme cylinder 2 with attached transfer form. This forme cylinder 2 is in contact with a metering roller 3 with which the paint to be processed is metered. For the metering of low-viscosity paints (≤ 50 s run-out time 4 mm cup), the metering roller 3 is in contact with an immersion roller 4. The immersion roller 4 runs in a reservoir 5 filled with lacquer and the metering roller 3 is coupled to a drive. Both rollers 3, 4 have a different surface hardness. Depending on the requirements for the layer thickness, a smaller layer thickness is transferred to the forme cylinder 2 according to the principle of ink splitting in the case of a harder metering roller 3, and a larger layer thickness is transferred to the forme cylinder 2 when a softer metering roller 3 is used, with a defined auxiliary force.

Für die Dosierung höherviskoser Lacke (> 50 s Auslaufzeit 4mm-Becher) werden Dosierwalze 3 und Tauchwalze 4 durch eine Rasterwalze 3', z.B. eine Keramikwalze, und eine Kammerrakel 8 ausgetauscht. Die Kammerrakel 8 besitzt ein Gehäuse, welches am Schwenklager 9 drehbar angeordnet ist und stützt sich mit den Rakelblättern am Umfang der Rasterwalze 3' ab. Ein Rakelblatt dichtet als positiv angestelltes Schließrakel die Kammer zur Rasterwalze 3' ab und das andere Rakelblatt dosiert als negativ angestelltes Arbeitsrakel. Das Gehäuse der Kammerrakel 9 ist beidseitig in je einem an den Seitengestellen angeordneten Schwenklager 9 drehbar aufgenommen und zur Rasterwalze 3' beistellbar. Die Kammerrakel 8 besitzt eine Einrichtung zum Zuführen und Abführen des jeweils zu verarbeitenden Mediums, welche hier nicht weiter beschrieben werden soll.For the metering of higher-viscosity lacquers (> 50 s run-out time 4 mm cup), metering roller 3 and immersion roller 4 are replaced by an anilox roller 3 ', for example a ceramic roller, and a chamber doctor blade 8. The chambered doctor blade 8 has a housing which is rotatably arranged on the pivot bearing 9 and is supported with the doctor blade blades on the circumference of the anilox roller 3 '. One doctor blade seals the chamber to the anilox roller 3 'as a positive doctor blade and the other doctor blade doses as a negative doctor blade. The housing of the chambered doctor blade 9 can be rotated on both sides in a pivot bearing 9 arranged on the side frames added and can be provided to the anilox roller 3 '. The chambered doctor blade 8 has a device for feeding and discharging the medium to be processed, which will not be described further here.

Die Wirkungsweise der Vorrichtung ist wie folgt: Soll ein niedrigviskoser Lack verarbeitet werden, so werden die Tauchwalze 4 und die Dosierwalze 3 dem Formzylinder 2 zugeordnet. Die Dosierwalze 3 mit größerer Oberflächenhärte kann dabei eine glatte oder gerasterte Oberfläche besitzen, während die Tauchwalze 4 mit einer weicheren Oberfläche, einem Elastomerbezug, versehen ist. Über Vorratsbehälter 5 wird der zu verarbeitende niedrigviskose Lack von der Tauchwalze 4 gefördert, so daß sich auf der Dosierwalze 3 ein Lackfilm bildet. Die Dosierwalze 3 kann zur Tauchwalze 4 oder zum Formzylinder 2 beigestellt werden. Die Dosierung erfolgt nach dem Schöpfwalzenprinzip und die Dosierwalze 3 fördert den Lack zum Formzylinder 2, welcher den Lack auf den Bedruckstoff in Verbindung mit dem Gegendruckzylinder 1 überträgt.The operation of the device is as follows: If a low-viscosity lacquer is to be processed, the immersion roller 4 and the metering roller 3 are assigned to the forme cylinder 2. The metering roller 3 with a greater surface hardness can have a smooth or rastered surface, while the dipping roller 4 is provided with a softer surface, an elastomer cover. The low-viscosity paint to be processed is conveyed by the immersion roller 4 via the storage container 5, so that a paint film forms on the metering roller 3. The metering roller 3 can be added to the immersion roller 4 or to the forme cylinder 2. The metering takes place according to the scoop roller principle and the metering roller 3 conveys the lacquer to the forme cylinder 2, which transfers the lacquer to the printing material in connection with the impression cylinder 1.

Soll ein höherviskoser Lack verarbeitet werden, so wird die Tauchwalze 4 entfernt und die Tauchwalze 4 und die Dosierwalze 3 werden durch eine Kammerrakel 8 und eine Rasterwalze 3' ersetzt. Die Kammerrakel 8 ist in je einem Schwenklager 9 aufgenommen. Die Lackdosierung erfolgt nun durch das negativ angestellte Arbeitsrakelblatt und die Rasterstruktur der Auftragwalze 3'. Eine Veränderung der dosierbaren Lackmenge ist durch Austausch der Rasterwalze 3' möglich, indem eine Rasterwalze 3' mit veränderter Rasterstruktur zum Einsatz kommt.If a higher viscosity lacquer is to be processed, the immersion roller 4 is removed and the immersion roller 4 and the metering roller 3 are replaced by a chamber doctor blade 8 and an anilox roller 3 '. The doctor blade 8 is received in a pivot bearing 9. The paint is now metered through the negatively positioned working doctor blade and the grid structure of the application roller 3 '. The meterable amount of paint can be changed by replacing the anilox roller 3 'by using an anilox roller 3' with a modified raster structure.

In einer weiteren Ausbildung ist dem Formzylinder 2 eine an- und abstellbare Dosierwalze 3 mit Tauchwalze 4 und Vorratsbehälter 5 als 1. Baugruppe zugeordnet und vorzugsweise dem ersten und/oder zweiten Quadranten des Formzylinders 2 eine Rasterwalze 3' mit einer Kammerrakel 8 als 2. Baugruppe zugeordnet. Je nach den zu verarbeitenden Medien wird die 1. Baugruppe (Dosierwalze 3, Tauchwalze 4) mit dem Formzylinder 2 bei niedrigviskosen Medien in Kontakt gebracht. Bei höherviskosen Medien wird die 1. Baugruppe vom Formzylinder 2 abgestellt, verbleibt jedoch in ihren Lagerungen (nicht gezeigt). Die 2. Baugruppe wird zum Formzylinder 2 in Kontakt gebracht, indem die Rasterwalze 3' angestellt wird. Die Kammerrakel 8 wird z.B. in einem Schwenklager 9 aufgenommen und liegt mit den Rakelblättern auf der Mantelfläche des Formzylinders 2 auf. Die Kammerrakel 8 kann dabei in einer gestellfesten Traverse (nicht gezeigt) gelagert sein und von dieser zur Rasterwalze 3' anund abgestellt werden.In a further embodiment, the forme cylinder 2 is associated with a metering roller 3 with immersion roller 4 and storage container 5 as the 1st assembly, and preferably an anilox roller 3 'with a doctor blade 8 as the 2nd assembly with the first and / or second quadrant of the forme cylinder 2 assigned. Depending on the media to be processed, the 1st assembly (metering roller 3, immersion roller 4) with the forme cylinder 2 in the case of low-viscosity media Brought in contact. In the case of higher-viscosity media, the 1st assembly is parked by the forme cylinder 2, but remains in its bearings (not shown). The second assembly is brought into contact with the forme cylinder 2 by turning on the anilox roller 3 '. The chambered doctor blade 8 is received, for example, in a swivel bearing 9 and lies with the doctor blade on the outer surface of the forme cylinder 2. The chambered doctor blade 8 can be mounted in a cross-member (not shown) fixed to the frame and can be turned on and off by this to the anilox roller 3 '.

BezugszeichenaufstellungList of reference symbols

11
DruckzylinderImpression cylinder
22nd
FormzylinderForme cylinder
33rd
DosierwalzeDosing roller
3'3 '
gerasterte Auftragwalzescreened application roller
44th
TauchwalzeDipping roller
55
VorratsbehälterStorage container
66
Trommeldrum
77
Trommeldrum
88th
KammerrakelChamber squeegee
99
SchwenklagerSwivel bearing

Claims (10)

  1. Device for metering liquid media of differing viscosity in offset printing presses, preferably in varnishing units, using a counter-impression cylinder, a forme cylinder and at least one applicator roller, characterised in that arranged optionally settable against the forme cylinder (2) for metering low viscosity media are two exchangeable rollers (3, 4) of differing surface hardness as metering roller (3) and dipping roller (4) or for metering higher viscosity media, a chamber doctor (8) and a rastered applicator roller (3') are arranged relative to the forme cylinder (2).
  2. Device according to Claim 1, characterised in that the roller (3 or 4) of harder surface hardness has a rastered surface.
  3. Device according to Claim 1 and 2, characterised in that the rastered metering roller (3) can be set against the forme cylinder (2) or against a dipping roller (4) having a softer surface.
  4. Device according to Claim 1, characterised in that for metering low viscosity media with the object of achieving larger layer thicknesses, the metering roller (3) with the surface hardness less with respect to the dipping roller (4) is arranged relative to the forme cylinder (2).
  5. Device according to Claim 1, characterised in that for metering low viscosity media for achieving smaller layer thicknesses, the metering roller (3) with surface hardness higher relative to the dipping roller (4) is arranged relative to the forme cylinder.
  6. Device according to Claims 1 to 5, characterised in that dipping roller (4) and metering roller (3) are exchangeable in their bearing positions.
  7. Device according to Claims 1 to 6, characterised in that the device is arranged prior to the first printing unit in an offset printing press.
  8. Device according to Claims 1 to 6, characterised in that the device is arranged between the printing units in an offset printing press.
  9. Device according to Claims 1 to 6, characterised in that the device is arranged after the printing units in an offset printing press.
  10. Device according to Claims 1 to 6, characterised in that a further treating station is arranged prior to or after the device.
EP94119151A 1993-12-23 1994-12-05 Device for metering a liquid in an offset printing machine particularly a lacquering device Expired - Lifetime EP0659557B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344084A DE4344084C1 (en) 1993-12-23 1993-12-23 Apparatus for metering fluid media of different viscosities in offset printing machines, preferably in varnishing units
DE4344084 1993-12-23

Publications (2)

Publication Number Publication Date
EP0659557A1 EP0659557A1 (en) 1995-06-28
EP0659557B1 true EP0659557B1 (en) 1997-03-19

Family

ID=6505938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119151A Expired - Lifetime EP0659557B1 (en) 1993-12-23 1994-12-05 Device for metering a liquid in an offset printing machine particularly a lacquering device

Country Status (5)

Country Link
US (1) US5588365A (en)
EP (1) EP0659557B1 (en)
JP (1) JP3056388B2 (en)
AT (1) ATE150372T1 (en)
DE (2) DE4344084C1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613117A1 (en) * 1996-04-02 1997-10-09 Kba Planeta Ag Commissioned work for printing machines
DK80097A (en) 1997-07-03 1999-01-04 Tresu As Offset printing press
DE19753136C2 (en) * 1997-11-29 2002-01-31 Koenig & Bauer Ag Anilox coating application unit
DE19913763A1 (en) * 1999-03-26 2000-10-05 Koenig & Bauer Ag Combination coating unit
DE19913764A1 (en) * 1999-03-26 2000-10-05 Koenig & Bauer Ag Device for dosing liquid media
WO2001008886A2 (en) * 1999-07-28 2001-02-08 Koenig & Bauer Ag Varnishing device
DE102006002170A1 (en) * 2006-01-17 2007-07-26 Heidelberger Druckmaschinen Ag Printing machine has doctor type ink fountain set with tiltable rear wall for adjusting ink level
DE102008041909A1 (en) 2008-09-09 2010-03-11 Manroland Ag Pressurized fluid applicator i.e. lacquer module, for use in sheet offset printing press, has dosing systems comprising applicator rollers that cooperate with each other for selectively supplying pressurized fluid to plate cylinder
CN104553299A (en) * 2014-12-26 2015-04-29 四川金时印务有限公司 Method for UV (Ultra-Violet Ray) lustering of offset press through hollowing lining papers

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US2240762A (en) * 1938-01-12 1941-05-06 Maschf Augsburg Nuernberg Ag Inking apparatus for aniline color printing machines
US2374096A (en) * 1941-11-28 1945-04-17 Us Envelope Co Inking device for aniline color printing
DE2345183C2 (en) * 1973-09-07 1975-03-20 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Device for painting or the like. on a printing press
JPS5244084Y2 (en) * 1976-06-10 1977-10-06
US4308796A (en) * 1979-07-13 1982-01-05 S-W-H, Ltd. Offset lithographic press with ink metering system for blanket cylinder
JPS57149138U (en) * 1981-03-13 1982-09-18
DE3135711A1 (en) * 1981-07-29 1983-02-10 Windmöller & Hölscher, 4540 Lengerich DISHWASHER FOR A ROTARY PRINTING MACHINE
DE3324096C2 (en) * 1983-07-05 1986-10-30 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Motor-driven coating unit on printing machines
DE3427838C2 (en) * 1984-07-27 1988-09-29 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Roughness probe
DE3427898C1 (en) * 1984-07-28 1985-11-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Device for applying liquids, in particular coating unit for a printing press
JPS62256656A (en) * 1986-04-30 1987-11-09 Sumitomo Heavy Ind Ltd Apparatus for coating printed matter with varnish
DD270039A1 (en) * 1988-03-11 1989-07-19 Polygraph Leipzig MULTIPLE DRIVE ON PRINTING MACHINES
DD282663A5 (en) * 1988-03-25 1990-09-19 Polygraph Leipzig ORDERING FOR PRINTING MACHINES
DD278551A1 (en) * 1988-12-27 1990-05-09 Polygraph Leipzig METHOD AND DEVICE FOR PROCESSING SPECIAL COLORS IN BORENO PRESSURE MACHINES
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DE4334803C1 (en) * 1993-10-13 1994-11-03 Roland Man Druckmasch Device for metering liquid media in offset printing machines, preferably for varnishing units

Also Published As

Publication number Publication date
JP3056388B2 (en) 2000-06-26
EP0659557A1 (en) 1995-06-28
ATE150372T1 (en) 1997-04-15
JPH07205408A (en) 1995-08-08
DE59402141D1 (en) 1997-04-24
US5588365A (en) 1996-12-31
DE4344084C1 (en) 1995-03-02

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