EP0635366A1 - Method and means for applying a liquid on a printing surface in an offset printing machine - Google Patents

Method and means for applying a liquid on a printing surface in an offset printing machine Download PDF

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Publication number
EP0635366A1
EP0635366A1 EP94111145A EP94111145A EP0635366A1 EP 0635366 A1 EP0635366 A1 EP 0635366A1 EP 94111145 A EP94111145 A EP 94111145A EP 94111145 A EP94111145 A EP 94111145A EP 0635366 A1 EP0635366 A1 EP 0635366A1
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EP
European Patent Office
Prior art keywords
roller
bearing
doctor blade
metering
viscosity
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Granted
Application number
EP94111145A
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German (de)
French (fr)
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EP0635366B1 (en
Inventor
Toni Ehrhard
Georg Hartung
Manfred Herold
Ulrich Dr. Jung
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Manroland AG
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MAN Roland Druckmaschinen AG
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Publication of EP0635366A1 publication Critical patent/EP0635366A1/en
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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 working method and a device for applying a liquid medium to a printing material in offset printing machines.
  • the device is suitable for processing low-viscosity as well as higher-viscosity media such as Water-based dispersion varnish (low viscosity with a viscosity ⁇ 0.1 Pa s) or bronze and effect printing ink with a certain pigment content (higher viscosity with a viscosity of 0.1 to 2 Pas), e.g. Gold lacquer.
  • the medium to be applied is metered by means of a metering roller and applicator roller using the squeeze roller principle, the liquid, e.g. Paint is fed through the roller nip thus formed by means of a tube over a paint wedge.
  • 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.
  • the invention is therefore based on the object of developing a solution which eliminates the disadvantages mentioned.
  • the solution according to the invention permits the rapid change of metering roller and chamber doctor blade in combination with the respective application roller as function blocks in an offset printing machine.
  • the first function block When processing low-viscosity media ( ⁇ 0.1 Pa s), the first function block is used.
  • An application roller (rubber coating or steel) and a metering roller (steel or rubber coating) are inserted into the laterally fixed eccentric bearings for application roller and metering roller.
  • the second function block is used when processing higher-viscosity media (> 0.1 to 2 Pa s).
  • a rastered application roller is then used in the above-mentioned eccentric bearings and a chambered doctor blade in the storage for the metering roller.
  • the eccentric bearings for the first function module (applicator roller / metering roller) thus simultaneously serve to hold the second function module (rastered application roller / chamber doctor blade) after the first function module has been replaced from the bearings.
  • the pressure is supplied to the applicator roller via a single auxiliary storage (for the metering roller or the chamber doctor blade). This enables economical processing of liquid media in the inline operation of an offset printing machine.
  • the device can be converted to the processing of the respective medium in a short time and ensures exact dosing of the liquids.
  • the device can be the first printing unit of an offset printing machine for print finishing, e.g. Painting, 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, to which a forme cylinder 2 is assigned.
  • An application roller 3 is assigned to the forme cylinder 2.
  • a metering roller 4 or a chambered doctor blade 5 is optionally assigned to the applicator roller 3.
  • Cylinder 1, forme cylinder 2, applicator roller 3, metering roller 4 and chamber doctor blade 5 are mounted in side frames 19, the metering roller 4, the applicator roller 3 and the forme cylinder 2 being accommodated in eccentric bearings 7, 21.
  • Metering roller 4 and applicator roller 3 are each accommodated in two-part bearings 7, 21, so that the upper parts are detachably positively connected to the lower parts of the bearings 7, 21 fastened in the side frames 19.
  • the bearings 7 of the metering roller 4 are each designed as an auxiliary bearing 7 in the form of an eccentric bearing.
  • An adjusting means 20, for example a working cylinder, is provided on the auxiliary bearing 7 for the provision of pressure (Druckan / Druckab).
  • a swivel bearing 6 is arranged on both sides in the side frames 19 as a bearing for the doctor blade 5.
  • the chambered doctor blade 5 is detachably attached to a frame 15, for example consisting of supports 8 and struts 14, by means of quick-release fasteners.
  • the carriers 8 are arranged on the circular crossmember 12, the crossmember 12 and the bearing plates 13 each forming a pivot bearing acting as a swivel joint.
  • a coupling 9 is articulated on the frame 15 on both sides in a swivel joint 10.
  • the coupling 9 is also rotatably articulated on each auxiliary bearing 7, which otherwise also accommodate the metering roller 4.
  • the chambered doctor blade 5 attached to the frame 15 has a positively positioned closing doctor blade 17 and a negatively employed working doctor blade 16 for a rastered application roller 3 '.
  • the working doctor blade 16 is supported on the circumference of the rastered application roller 3' at an engagement point 18 which is at the level of the center of the bearing 22, on line 23, the eccentric bearing of the applicator roller 3 '.
  • the chambered doctor blade 5 has a device for feeding and discharging the medium to be processed, which is not described further here.
  • the form cylinder 2 can thus be assigned two function blocks.
  • the first function block is formed by the metering roller 4 in steel and the application roller 3 in rubber coating.
  • the form cylinder 2 carries, for example, a rubber blanket for full-surface painting.
  • the metering roller 4 can be provided with a rubber coating and the applicator roller 3 is made of steel.
  • the forme cylinder 2 carries a flexographic printing plate or a recessed blanket for recessed painting (spot painting).
  • the second function block is formed by the chambered doctor blade 5, frame 15, pivot bearing 6 and an applicator roller 3 'with a grid cup structure.
  • the screened application roller 3 ' is e.g. executed in ceramic.
  • the device works as follows: If a conventional, low-viscosity varnish is processed, the first function block is used.
  • Metering roller 4 and applicator roller 3 receive the lacquer to be processed in the nip 11 via a feed pipe, not shown, so that a lacquer wedge forms therein.
  • the eccentric auxiliary bearing 7 is pivoted by means of adjusting means 20 such that the metering roller 4 engages or disengages from the application roller 3 in the printing position or pressure setting.
  • the metering takes place according to the squeeze roller principle and the application 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 second function module is used. To do this, the upper part of the auxiliary bearing 7 is to be loosened and the metering roller 4 is removed. The paint supply tube is removed above the nip 11 and the upper part of the bearing 21 of the applicator roller 3 is opened so that the roller 3 can also be removed. A rastered applicator roller 3 'is placed in the applicator roller bearing 21 of the applicator roller 3 and the upper part of the bearing 21 is connected to the lower part. The coupling 9 with frame 15 and chamber doctor blade 5 is inserted into the auxiliary bearing 7 and the upper part of the auxiliary bearing 7 is connected to the lower part.
  • a higher-viscosity lacquer such as bronze or effect printing ink
  • the chamber doctor blade is coupled with a lacquer feed and a lacquer discharge.
  • the chambered doctor blade 5 is supplied to the applicator roller 3 'via the adjusting means 20 arranged on the auxiliary bearing 7 (Druckan / Druckab).
  • the working doctor blade 16 engages at the height (line 23) of the bearing center 22 of the applicator roller 3 ' the circumference at the point of engagement 18 in order to change the engagement conditions when adjusting the eccentric bearing 21 of the roller 3 as little as possible.
  • the cross member 12 can remain in the bearing plate 13 of the pivot bearing 6 and the coupling 9, frame 15 and chamber doctor blade 5 are pivoted into a parking position above the auxiliary bearing 7 and locked there.
  • the rastered applicator roller 3 ' is also removed from its storage 21 and an applicator roller 3, for example made of steel, is inserted and fixed.
  • the metering roller 4 is supplied to the application roller 3 via the adjusting means 20 arranged on the eccentric auxiliary bearing 7 (Druckan / Druckab). Previously, the paint feed pipe was positioned again over the nip 11 and coupled to a feed line.
  • the metering roller 4 has a separate drive which is coupled to the application roller 3.
  • two freewheels are arranged on the axis. One freewheel is coupled to the separate drive of the metering roller 4 and the other freewheel is coupled to the wheel train of the printing press (drive).
  • the drive of the printing machine overtakes the separate drive of the metering roller 4.
  • the drive is decoupled from the machine (stopped) and the separate drive drives the applicator roller 3 further. This prevents the paint from drying on the roller surface.
  • the procedure is analogous, since the drive is only coupled to the bearings 7, 21.

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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)
  • Printing Plates And Materials Therefor (AREA)

Abstract

The invention relates to a method and a device for applying a liquid medium on a printing carrier in offset printing machines. It is suitable for processing media of different viscosity, such as low-viscosity dispersion varnishes or higher-viscosity bronze and decorative printing inks. In order to guarantee precise metering, two function modules are arranged in an exchangeable manner on a forme cylinder (2) in two bearings (21, 7). If it is necessary to process low-viscosity media, the first function module, consisting at least of a metering roller (4) and applicator roller (3), is used. For processing higher-viscosity media, the second function module, consisting at least of a screened applicator roller (3') and a chamber-type doctor (5), is used. <IMAGE>

Description

Die Erfindung betrifft ein Arbeitsverfahren und eine Einrichtung zum Aufbringen eines flüssigen Mediums auf einen Bedruckstoff in Offsetdruckmaschinen. Die Einrichtung ist geeignet für die Verarbeitung niedrigviskoser als auch höherviskoser Medien wie z.B. Dispersionslack auf wässriger Basis (niedrigviskos mit einer Viskosität ≦ 0,1 Pa s) oder Bronze- und Effektdruckfarbe mit einem bestimmten Pigmentanteil (höherviskos mit einer Viskosität von 0,1 bis 2 Pas), wie z.B. Goldlack.The invention relates to a working method and a device for applying a liquid medium to a printing material in offset printing machines. The device is suitable for processing low-viscosity as well as higher-viscosity media such as Water-based dispersion varnish (low viscosity with a viscosity ≦ 0.1 Pa s) or bronze and effect printing ink with a certain pigment content (higher viscosity with a viscosity of 0.1 to 2 Pas), e.g. Gold lacquer.

Zum Auftragen flüssiger Medien sind verschiedene Lösungen bekannt. Gemäß der DE 3 427 898 C1 erfolgt die Dosierung des aufzutragenden Mediums mittels Dosierwalze und Auftragwalze nach dem Quetschwalzenprinzip, wobei die Flüssigkeit, z.B. Lack, über den so gebildeten Walzenspalt mittels Rohr über einen Lackkeil zugeführt wird.Various solutions are known for applying liquid media. According to DE 3 427 898 C1, the medium to be applied is metered by means of a metering roller and applicator roller using the squeeze roller principle, the liquid, e.g. Paint is fed through the roller nip thus formed by means of a tube over a paint wedge.

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 Lösung ist es, daß diese bei unterschiedlich viskosen Medien keine exakte Dosierung des aufzutragenden Mediums gewährleisten. Somit sind die bekannten Lösungen nicht universell zum Aufbringen der jeweils verwendeten Flüssigkeit auf den Bedruckstoff einsetzbar.The disadvantage of this solution is that it is different viscous media do not guarantee exact dosing of the medium to be applied. Thus, the known solutions cannot be used universally for applying the liquid used in each case to the printing material.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Lösung zu entwickeln, die die genannten Nachteile beseitigt.The invention is therefore based on the object of developing a solution which eliminates the disadvantages mentioned.

Gelöst wird dies durch den kennzeichnenden Teil der Ansprüche 1 und 2. Weiterbildungen ergeben sich aus den Unteransprüchen.This is solved by the characterizing part of claims 1 and 2. Further developments result from the subclaims.

Die erfindungsgemäße Lösung gestattet den Schnellwechsel von Dosierwalze und Kammerrakel in Kombination mit der jeweiligen Auftragwalze als Funktionsbausteine in einer Offsetdruckmaschine.The solution according to the invention permits the rapid change of metering roller and chamber doctor blade in combination with the respective application roller as function blocks in an offset printing machine.

Bei Verarbeitung niedrigviskoser Medien (≦ 0,1 Pa s) kommt der erste Funktionsbaustein zum Einsatz. In die seitlich fixierten exzentrischen Lagerungen für Auftragwalze und Dosierwalze wird jeweils eine Auftragwalze (Gummibeschichtung oder Stahl) und eine Dosierwalze (Stahl oder Gummibeschichtung) eingesetzt.When processing low-viscosity media (≦ 0.1 Pa s), the first function block is used. An application roller (rubber coating or steel) and a metering roller (steel or rubber coating) are inserted into the laterally fixed eccentric bearings for application roller and metering roller.

Bei Verarbeitung höherviskoser Medien (> 0,1 bis 2 Pa s) kommt der zweite Funktionsbaustein zum Einsatz. In die oben genannten exzentrischen Lagerungen werden dann eine gerasterte Auftragwalze eingesetzt und in die Lagerung für die Dosierwalze eine Kammerrakel. Die exzentrischen Lagerungen für den ersten Funktionsbaustein (Auftragwalze/Dosierwalze) dienen somit gleichzeitig der Aufnahme des Zweiten Funktionsbausteines (gerasterte Auftragwalze/Kammerrakel) nachdem der erste Funktionsbaustein aus den Lagerungen ausgetauscht wurde. Über ein einziges Beistellager (für die Dosierwalze oder die Kammerrakel) erfolgt die Druckbeistellung zur Auftragwalze. Dadurch wird eine wirtschaftliche Verarbeitung flüssiger Medien im Inline-Betrieb einer Offsetdruckmaschine möglich. Die Einrichtung ist in kurzer Zeit auf die Verarbeitung des jeweiligen Mediums umrüstbar und gewährleistet eine exakte Dosierung der Flüssigkeiten.The second function block is used when processing higher-viscosity media (> 0.1 to 2 Pa s). A rastered application roller is then used in the above-mentioned eccentric bearings and a chambered doctor blade in the storage for the metering roller. The eccentric bearings for the first function module (applicator roller / metering roller) thus simultaneously serve to hold the second function module (rastered application roller / chamber doctor blade) after the first function module has been replaced from the bearings. The pressure is supplied to the applicator roller via a single auxiliary storage (for the metering roller or the chamber doctor blade). This enables economical processing of liquid media in the inline operation of an offset printing machine. The device can be converted to the processing of the respective medium in a short time and ensures exact dosing of the liquids.

Die Einrichtung kann dabei dem ersten Druckwerk einer Offsetdruckmaschine zur Druckveredelung, z.B. Lackieren, 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, 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.

Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden.The invention will be explained in more detail using an exemplary embodiment.

Dabei zeigt:

Fig. 1
den prinzipiellen Aufbau der Einrichtung, wobei Dosierwalze und Kammerrakel überlagert dargestellt sind,
Fig. 2
die Einrichtung für die Verarbeitung höherviskoser Medien (Seitenansicht),
Fig. 3
die Lagerung der Kammerrakel (Vorderansicht).
It shows:
Fig. 1
the basic structure of the device, the metering roller and chamber doctor blade are shown superimposed,
Fig. 2
the device for processing high-viscosity media (side view),
Fig. 3
the storage of the chamber doctor blade (front view).

In einer Offsetdruckmaschine ist dem letzten Druckwerk die erfindungsgemäße Einrichtung nachgeordnet und dient der Inline-Lackierung von Bedruckstoffen. Die Einrichtung besteht dabei aus einem bogenführenden Zylinder 1, dem ein Formzylinder 2 zugeordnet ist. Dem Formzylinder 2 ist eine Auftragwalze 3 zugeordnet. An die Auftragwalze 3 beistellbar ist wahlweise eine Dosierwalze 4 oder eine Kammerrakel 5 zugeordnet. Zylinder 1, Formzylinder 2, Auftragwalze 3, Dosierwalze 4 und Kammerrakel 5 sind in Seitengestellen 19 gelagert, wobei die Dosierwalze 4, die Auftragwalze 3 und der Formzylinder 2 in exzentrischen Lagern 7, 21 aufgenommen sind. Dosierwalze 4 und Auftragwalze 3 sind jeweils in zweiteilig ausgebildeten Lagerungen 7, 21 aufgenommen, so daß die Oberteile lösbar formschlüssig mit den in den Seitengestellen 19 befestigten Unterteilen der Lagerungen 7, 21 verbunden sind. Die Lagerungen 7 der Dosierwalze 4 ist als je ein Beistellager 7 in Form eines Exzenterlagers ausgeführt. Am Beistellager 7 ist ein Stellmittel 20, z.B. ein Arbeitszylinder, zur Druckbeistellung (Druckan/Druckab) angeordnet. Oberhalb eines von Dosierwalze 4 und Auftragwalze 3 gebildeten Walzenspaltes ist beidseitig in den Seitengestellen 19 ein Schwenklager 6 als Lagerung für die Kammerrakel 5 angeordnet. Die Kammerrakel 5 ist an einem Rahmen 15, z.B. bestehend aus Trägern 8 und Streben 14, mittels Schnellverschlüssen lösbar befestigt. Die Träger 8 sind an der kreisförmig ausgebildeten Traverse 12 angeordnet, wobei die Traverse 12 und die Lagerplatten 13 jeweils ein als Drehgelenk wirkendes Schwenklager bilden. Am Rahmen 15 ist beidseitig in je einem Drehgelenk 10 eine Koppel 9 angelenkt. Die Koppel 9 ist weiterhin drehbar an jedem Beistellager 7 angelenkt, welche sonst auch die Dosierwalze 4 aufnehmen. Die am Rahmen 15 befestigte Kammerrakel 5 besitzt zu einer gerasterten Auftragwalze 3' ein positiv angestelltes Schließrakelblatt 17 und ein negativ angestelltes Arbeitsrakelblatt 16. Dabei stützt sich das Arbeitsrakelblatt 16 am Umfang der gerasterten Auftragwalze 3' an einem Eingriffspunkt 18 ab, der in Höhe der Lagermitte 22, auf der Linie 23, der exzentrischen Lagerung der Auftragwalze 3' liegt. Die Kammerrakel 5 besitzt eine Einrichtung zum Zuführen und Abführen des jeweils zu verarbeitenden Mediums, welche hier nicht weiter beschrieben wird. Den Formzylinder 2 sind somit zwei Funktionsbausteine zuordbar.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, to which a forme cylinder 2 is assigned. An application roller 3 is assigned to the forme cylinder 2. A metering roller 4 or a chambered doctor blade 5 is optionally assigned to the applicator roller 3. Cylinder 1, forme cylinder 2, applicator roller 3, metering roller 4 and chamber doctor blade 5 are mounted in side frames 19, the metering roller 4, the applicator roller 3 and the forme cylinder 2 being accommodated in eccentric bearings 7, 21. Metering roller 4 and applicator roller 3 are each accommodated in two-part bearings 7, 21, so that the upper parts are detachably positively connected to the lower parts of the bearings 7, 21 fastened in the side frames 19. The bearings 7 of the metering roller 4 are each designed as an auxiliary bearing 7 in the form of an eccentric bearing. An adjusting means 20, for example a working cylinder, is provided on the auxiliary bearing 7 for the provision of pressure (Druckan / Druckab). Above a roller gap formed by metering roller 4 and applicator roller 3, a swivel bearing 6 is arranged on both sides in the side frames 19 as a bearing for the doctor blade 5. The chambered doctor blade 5 is detachably attached to a frame 15, for example consisting of supports 8 and struts 14, by means of quick-release fasteners. The carriers 8 are arranged on the circular crossmember 12, the crossmember 12 and the bearing plates 13 each forming a pivot bearing acting as a swivel joint. A coupling 9 is articulated on the frame 15 on both sides in a swivel joint 10. The coupling 9 is also rotatably articulated on each auxiliary bearing 7, which otherwise also accommodate the metering roller 4. The chambered doctor blade 5 attached to the frame 15 has a positively positioned closing doctor blade 17 and a negatively employed working doctor blade 16 for a rastered application roller 3 '. The working doctor blade 16 is supported on the circumference of the rastered application roller 3' at an engagement point 18 which is at the level of the center of the bearing 22, on line 23, the eccentric bearing of the applicator roller 3 '. The chambered doctor blade 5 has a device for feeding and discharging the medium to be processed, which is not described further here. The form cylinder 2 can thus be assigned two function blocks.

Der erste Funktionsbaustein wird gebildet durch die Dosierwalze 4 in Stahlausführung und die Auftragwalze 3 in Gummibeschichtung. Der Formzylinder 2 trägt z.B. ein Gummituch zum vollflächigen Lackieren. Ebenso kann die Dosierwalze 4 mit einer Gummibeschichtung versehen sein und die Auftragwalze 3 ist in Stahl ausgeführt. Der Formzylinder 2 trägt dabei eine Flexodruckplatte oder ein ausgespartes Gummituch zum ausgesparten Lackieren (Spotlackierung).The first function block is formed by the metering roller 4 in steel and the application roller 3 in rubber coating. The form cylinder 2 carries, for example, a rubber blanket for full-surface painting. Likewise, the metering roller 4 can be provided with a rubber coating and the applicator roller 3 is made of steel. The forme cylinder 2 carries a flexographic printing plate or a recessed blanket for recessed painting (spot painting).

Der zweite Funktionsbaustein wird gebildet durch die Kammerrakel 5, Rahmen 15, Schwenklager 6 und einer Auftragwalze 3' mit Rasternäpfenstruktur. Die gerasterte Auftragwalze 3' ist z.B. in Keramik ausgeführt.The second function block is formed by the chambered doctor blade 5, frame 15, pivot bearing 6 and an applicator roller 3 'with a grid cup structure. The screened application roller 3 'is e.g. executed in ceramic.

Die Wirkungsweise der Einrichtung ist wie folgt: Wird ein herkömmlicher, niedrigviskoser Lack verarbeitet, so kommt der erste Funktionsbaustein zum Einsatz. Dosierwalze 4 und Auftragwalze 3 erhalten über ein nicht gezeigtes Zuführrohr den zu verarbeitenden Lack in den Walzenspalt 11, so daß sich darin ein Lackkeil bildet. Mittels Stellmittel 20 wird das exzentrische Beistellager 7 verschwenkt, derart, daß die Dosierwalze 4 in Druckanstellung bzw. Druckabstellung mit der Auftragwalze 3 in Eingriff kommt bzw. außer Eingriff. Die Dosierung erfolgt nach dem Quetschwalzenprinzip und die Auftragwalze 3 fördert den Lack zum Formzylinder 2, welcher den Lack auf den Bedruckstoff in Verbindung mit dem Gegendruckzylinder 1 überträgt.The device works as follows: If a conventional, low-viscosity varnish is processed, the first function block is used. Metering roller 4 and applicator roller 3 receive the lacquer to be processed in the nip 11 via a feed pipe, not shown, so that a lacquer wedge forms therein. The eccentric auxiliary bearing 7 is pivoted by means of adjusting means 20 such that the metering roller 4 engages or disengages from the application roller 3 in the printing position or pressure setting. The metering takes place according to the squeeze roller principle and the application 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 Auftrag mit höherviskosem Lack, wie z.B. Bronze- oder Effektdruckfarbe, bearbeitet werden, so kommt der zweite Funktionsbaustein zum Einsatz. Dazu ist das Oberteil des Beistellagers 7 zu lösen und die Dosierwalze 4 wird herausgenommen. Das Lackzuführungsrohr wird über dem Walzenspalt 11 entfernt und das Oberteil der Lagerung 21 der Auftragwalze 3 wird geöffnet, so daß die Walze 3 ebenfalls entfernt werden kann. In die Auftragwalzenlagerung 21 der Auftragwalze 3 wird eine gerasterte Auftragwalze 3' eingelegt und das Oberteil der Lagerung 21 wird mit dem Unterteil verbunden. In das Beistellager 7 wird die Koppel 9 mit Rahmen 15 und Kammerrakel 5 eingesetzt und das Oberteil des Beistellagers 7 wird mit dem Unterteil verbunden. Vorher wird der Rahmen 15 mit der Traverse 12 in das Schwenklager 6 eingelegt. Die Kammerrakel wird mit einer Lackzuführung und einer Lackabführung gekoppelt. Über das am Beistellager 7 angeordnete Stellmittel 20 wird die Kammerrakel 5 zur Auftragwalze 3' beigestellt (Druckan/Druckab). Das Arbeitsrakelblatt 16 greift dabei in Höhe (Linie 23) der Lagermitte 22 der Auftragwalze 3' an deren Umfang im Eingriffspunkt 18 an, um die Eingriffsverhältnisse beim Verstellen des exzentrischen Lagers 21 der Walze 3 möglichst wenig zu verändern.If an order is to be processed with a higher-viscosity lacquer, such as bronze or effect printing ink, the second function module is used. To do this, the upper part of the auxiliary bearing 7 is to be loosened and the metering roller 4 is removed. The paint supply tube is removed above the nip 11 and the upper part of the bearing 21 of the applicator roller 3 is opened so that the roller 3 can also be removed. A rastered applicator roller 3 'is placed in the applicator roller bearing 21 of the applicator roller 3 and the upper part of the bearing 21 is connected to the lower part. The coupling 9 with frame 15 and chamber doctor blade 5 is inserted into the auxiliary bearing 7 and the upper part of the auxiliary bearing 7 is connected to the lower part. Before that, the frame 15 with the cross member 12 is inserted into the pivot bearing 6. The chamber doctor blade is coupled with a lacquer feed and a lacquer discharge. The chambered doctor blade 5 is supplied to the applicator roller 3 'via the adjusting means 20 arranged on the auxiliary bearing 7 (Druckan / Druckab). The working doctor blade 16 engages at the height (line 23) of the bearing center 22 of the applicator roller 3 ' the circumference at the point of engagement 18 in order to change the engagement conditions when adjusting the eccentric bearing 21 of the roller 3 as little as possible.

Soll nach dem Einsatz des höherviskosen Lackes wieder niedrigviskoser Lack verarbeitet werden, so wird das Oberteil des Beistellagers 7 entfernt und die Koppel 9 mit Rahmen 15 und Kammerrakel 5 herausgenommen. Vorher wird die Kammerrakel 5 entleert und die Versorgungsleitungen werden entkoppelt.If low-viscosity lacquer is to be processed again after the use of the higher-viscosity lacquer, the upper part of the auxiliary bearing 7 is removed and the coupling 9 with the frame 15 and chamber doctor blade 5 is removed. Before this, the doctor blade 5 is emptied and the supply lines are decoupled.

In einer weiteren Ausbildung kann die Traverse 12 in der Lagerplatte 13 des Schwenklagers 6 verbleiben und die Koppel 9, Rahmen 15 und Kammerrakel 5 werden in eine Parkposition oberhalb des Beistellagers 7 verschwenkt und dort arretiert. Die gerasterte Auftragwalze 3' wird ebenfalls aus ihrer Lagerung 21 entnommen und eine Auftragwalze 3, z.B. in Stahlausführung, wird eingesetzt und fixiert. In das Beistellager 7 wird die Dosierwalze 4 eingesetzt, die vorher z.B. in einer Walzenhalterung am Maschinengehäuse abgelegt (geparkt) war. Die Dosierwalze 4 wird über das am exzentrischen Beistellager 7 angeordnete Stellmittel 20 zur Auftragwalze 3 beigestellt (Druckan/Druckab). Vorher wurde das Lackzuführungsrohr wieder über den Walzenspalt 11 positioniert und mit einer Zuführungsleitung gekoppelt. Die Dosierwalze 4 hat einen separaten Antrieb, der mit der Auftragwalze 3 gekoppelt ist. An der Auftragwalze 3 sind auf der Achse zwei Freiläufe angeordnet. Ein Freilauf ist gekoppelt mit dem separaten Antrieb der Dosierwalze 4 und der andere Freilauf ist gekoppelt mit dem Räderzug der Druckmaschine (Eintrieb). Bei Druckanstellung überholt der Eintrieb der Druckmaschine den separaten Eintrieb der Dosierwalze 4. Bei Druckabstellung ist der Eintrieb von der Maschine entkoppelt (stillgesetzt) und der separate Eintrieb treibt die Auftragwalze 3 weiter an. Damit wird das Antrocknen des Lackes auf der Walzenoberfläche verhindert. Bei Verwendung des Kammerrakels 5 wird analog verfahren, da der Antrieb nur mit den Lagerungen 7, 21 gekoppelt ist.In a further embodiment, the cross member 12 can remain in the bearing plate 13 of the pivot bearing 6 and the coupling 9, frame 15 and chamber doctor blade 5 are pivoted into a parking position above the auxiliary bearing 7 and locked there. The rastered applicator roller 3 'is also removed from its storage 21 and an applicator roller 3, for example made of steel, is inserted and fixed. The metering roller 4, which was previously stored (parked) in a roller holder on the machine housing, is inserted into the auxiliary bearing 7. The metering roller 4 is supplied to the application roller 3 via the adjusting means 20 arranged on the eccentric auxiliary bearing 7 (Druckan / Druckab). Previously, the paint feed pipe was positioned again over the nip 11 and coupled to a feed line. The metering roller 4 has a separate drive which is coupled to the application roller 3. On the applicator roller 3, two freewheels are arranged on the axis. One freewheel is coupled to the separate drive of the metering roller 4 and the other freewheel is coupled to the wheel train of the printing press (drive). When the pressure is switched on, the drive of the printing machine overtakes the separate drive of the metering roller 4. When the pressure is switched off, the drive is decoupled from the machine (stopped) and the separate drive drives the applicator roller 3 further. This prevents the paint from drying on the roller surface. When using the chambered doctor blade 5, the procedure is analogous, since the drive is only coupled to the bearings 7, 21.

BezugszeichenlisteReference list

11
bogenführender Zylinderbow-guiding cylinder
22nd
FormzylinderForme cylinder
33rd
AuftragwalzeApplicator roller
3'3 '
gerasterte Auftragwalzescreened application roller
44th
DosierwalzeDosing roller
55
KammerrakelChamber squeegee
66
SchwenklagerSwivel bearing
77
BeistellagerAuxiliary storage
88th
Trägercarrier
99
KoppelPaddock
1010th
DrehgelenkSwivel
1111
WalzenspaltNip
1212th
Traversetraverse
1313
LagerplatteBearing plate
1414
Strebestrut
1515
Rahmenframe
1616
ArbeitsrakelblattWorking doctor blade
1717th
SchließrakelblattClosing doctor blade
1818th
EingriffspunktPoint of intervention
1919th
SeitengestellSide frame
2020th
StellmittelPositioning means
2121
WalzenlagerungRoller storage
2222
LagermitteCenter of the warehouse
2323
Linieline

Claims (10)

Verfahren und Einrichtung zum Aufbringen eines flüssigen Mediums auf einen Bedruckstoff in Offsetdruckmaschinen, unter Verwendung eines Gegendruckzylinders, eines Formzylinders und einer Auftragwalze,
dadurch gekennzeichnet,
daß zur Dosierung des Mediums die Druckbeistellung einer Dosierwalze oder einer Kammerrakel zur Auftragwalze über die gleiche exzentrische Lagerung erfolgt.Method and device for applying a liquid medium to a printing material in offset printing machines, using an impression cylinder, a forme cylinder and an application roller,
characterized by
that for the metering of the medium the pressure supply of a metering roller or a chamber doctor blade to the applicator roller takes place via the same eccentric bearing. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1,
dadurch gekennzeichnet,
daß dem Formzylinder (2) zur Verarbeitung von niedrigviskosen Medien (≦ 0,1 Pa s) ein erster Funktionsbaustein (3, 4) oder zur Verarbeitung von höherviskosen Medien (> 0,1 bis 2 Pa s) ein zweiter Funktionsbaustein (3', 5) in exzentrischen Beistellagern (7) und Walzenlagern (21) austauschbar zugeordnet ist.Device for performing the method according to claim 1,
characterized by
that the forme cylinder (2) has a first function module (3, 4) for processing low-viscosity media (≦ 0.1 Pa s) or a second function module (3 ', for processing higher-viscosity media (> 0.1 to 2 Pa s), 5) is interchangeably assigned in eccentric side bearings (7) and roller bearings (21). Einrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß der erste Funktionsbaustein mindestens aus einer Auftragwalze 3 und einer Dosierwalze 4 besteht und der zweite Funktionsbaustein mindestens aus einer gerasterten Auftragwalze (3') und einer Kammerrakel (5) gebildet ist.Device according to claim 2,
characterized by
that the first function block consists of at least one application roller 3 and a metering roller 4 and the second function module is formed at least of a rastered application roller (3 ') and a chamber doctor blade (5). Einrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß der erste Funktionsbaustein aus einer im Beistellager (7) drehbar angeordneten Dosierwalze (4), einer im Walzenlager (21) drehbar angeordneten Auftragwalze (3) sowie einer über dem Walzenspalt (11) angeordneten Zuführeinrichtung gebildet ist und der zweite Funktionsbaustein aus einer im Walzenlager (21) drehbar angeordneten, gerasterten Auftragwalze (3') sowie einer im Beistellager (7) und einem Schwenklager (6) drehbar angeordneten Kammerrakel (5) besteht.Device according to claim 2,
characterized by
that the first functional module is formed from a metering roller (4) rotatably arranged in the auxiliary bearing (7), an applicator roller (3) rotatably arranged in the roller bearing (21) and a feed device arranged above the roller gap (11) and the second functional module from an in the roller bearing (21) rotatably arranged, rastered application roller (3 ') and a chamber doctor blade (5) rotatably arranged in the auxiliary bearing (7) and a pivot bearing (6). Einrichtung nach Anspruch 2 bis 4,
dadurch gekennzeichnet,
daß als Bauteil des zweiten Funktionsbausteines die Kammerrakel (5) an einem Rahmen (15) lösbar befestigt ist, der mittels Traverse (12) drehbar in Schwenklagern (6) aufgenommen ist und über je ein Drehgelenk (10) mittels Koppel (9) drehbar in Beistellagern (7) aufgenommen ist.Device according to claim 2 to 4,
characterized by
that as a component of the second function block, the chamber squeegee (5) is releasably attached to a frame (15) which is rotatably received in swivel bearings (6) by means of crossmember (12) and rotatable in each via a swivel joint (10) by means of a coupling (9) Side bearings (7) is added. Einrichtung nach Anspruch 2 bis 5,
dadurch gekennzeichnet,
daß die Kammerrakel (5) ein negativ zur Auftragwalze (3) angestelltes Arbeitsrakelblatt (16) besitzt, dessen Eingriffspunkt (18) auf der durch die Lagermitte (22) des Walzenlagers (21) verlaufenden Linie (23) liegt, die vorzugsweise eine Horizontale ist.Device according to claim 2 to 5,
characterized by
that the chambered doctor blade (5) has a working doctor blade (16) positioned negatively to the applicator roller (3), the point of engagement (18) of which lies on the line (23) running through the center of the bearing (22) of the roller bearing (21), which is preferably a horizontal line . Einrichtung nach Anspruch 2 bis 6, dadurch gekennzeichnet,

daß die Einrichtung in einer Offsetdruckmaschine den Druckwerken vorgeordnet ist.Device according to claim 2 to 6, characterized in

that the device in an offset printing machine is upstream of the printing units. Einrichtung nach Anspruch 2 bis 6,
dadurch gekennzeichnet,
daß die Einrichtung in einer Offsetdruckmaschine zwischen den Druckwerken angeordnet ist.Device according to claim 2 to 6,
characterized by
that the device is arranged in an offset printing machine between the printing units. Einrichtung nach Anspruch 2 bis 6,
dadurch gekennzeichnet,
daß die Einrichtung in einer Offsetdruckmaschine den Druckwerken nachgeordnet ist.Device according to claim 2 to 6,
characterized by
that the device is arranged downstream of the printing units in an offset printing press. Einrichtung nach Anspruch 2 bis 9,
dadurch gekennzeichnet,
daß der Einrichtung eine weitere Verarbeitungseinrichtung voroder nachgeordnet ist.Device according to claims 2 to 9,
characterized by
that a further processing device is arranged upstream or downstream of the device.
EP94111145A 1993-07-22 1994-07-18 Method and means for applying a liquid on a printing surface in an offset printing machine Expired - Lifetime EP0635366B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4324631A DE4324631C2 (en) 1993-07-22 1993-07-22 Device for applying liquid media to a substrate in offset printing machines
DE4324631 1993-07-22

Publications (2)

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EP0635366A1 true EP0635366A1 (en) 1995-01-25
EP0635366B1 EP0635366B1 (en) 1997-09-10

Family

ID=6493459

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Application Number Title Priority Date Filing Date
EP94111145A Expired - Lifetime EP0635366B1 (en) 1993-07-22 1994-07-18 Method and means for applying a liquid on a printing surface in an offset printing machine

Country Status (5)

Country Link
US (1) US5476042A (en)
EP (1) EP0635366B1 (en)
JP (1) JP2664018B2 (en)
AT (1) ATE157935T1 (en)
DE (2) DE4324631C2 (en)

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DE19503695C2 (en) * 1995-02-04 1997-02-27 Roland Man Druckmasch Protection for a printing press
US5630363A (en) 1995-08-14 1997-05-20 Williamson Printing Corporation Combined lithographic/flexographic printing apparatus and process
DE19604761C2 (en) * 1996-02-09 1998-02-26 Windmoeller & Hoelscher Glue application device
DE19613117A1 (en) * 1996-04-02 1997-10-09 Kba Planeta Ag Commissioned work for printing machines
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DE19935170A1 (en) * 1999-07-28 2001-02-01 Koenig & Bauer Ag Refinement processes
DE102007003944A1 (en) * 2007-01-26 2008-08-07 Koenig & Bauer Aktiengesellschaft Inking system for a rotary printing machine comprises a doctor blade unit positioned in the frame of a rotary printing machine and having a doctor blade which touches the surface of a roller in a contact line
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CN112157988A (en) * 2020-09-29 2021-01-01 东台世恒机械科技有限公司 Gilding press and using method thereof

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Also Published As

Publication number Publication date
DE59404009D1 (en) 1997-10-16
DE4324631C2 (en) 1996-09-19
JP2664018B2 (en) 1997-10-15
ATE157935T1 (en) 1997-09-15
EP0635366B1 (en) 1997-09-10
DE4324631A1 (en) 1995-01-26
JPH07144405A (en) 1995-06-06
US5476042A (en) 1995-12-19

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