EP0225509B2 - Device for printing a web - Google Patents

Device for printing a web Download PDF

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Publication number
EP0225509B2
EP0225509B2 EP86115898A EP86115898A EP0225509B2 EP 0225509 B2 EP0225509 B2 EP 0225509B2 EP 86115898 A EP86115898 A EP 86115898A EP 86115898 A EP86115898 A EP 86115898A EP 0225509 B2 EP0225509 B2 EP 0225509B2
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EP
European Patent Office
Prior art keywords
cylinder
sleeve
cylinders
printing
blanket cylinder
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 - Lifetime
Application number
EP86115898A
Other languages
German (de)
French (fr)
Other versions
EP0225509A2 (en
EP0225509A3 (en
EP0225509B1 (en
Inventor
Udo Tittgemeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TITTGEMEYER ENGINEERING GmbH
Original Assignee
TITTGEMEYER ENGINEERING GmbH
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Application filed by TITTGEMEYER ENGINEERING GmbH filed Critical TITTGEMEYER ENGINEERING GmbH
Priority to EP92121151A priority Critical patent/EP0549936B1/en
Priority to AT86115898T priority patent/ATE93772T1/en
Publication of EP0225509A2 publication Critical patent/EP0225509A2/en
Publication of EP0225509A3 publication Critical patent/EP0225509A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1075—Mechanical aspects of on-press plate preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/80—Means enabling or facilitating exchange of cylinders
    • B41P2213/804—Means enabling or facilitating exchange of cylinders radially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/15—Machines with cylinders only supported on one side, e.g. cantilever construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • the invention relates to a device for indirect printing a web-shaped printing material, with at least three each with their ends stored in side walls during printing Printing cylinders using of interchangeable sleeves.
  • the Impression cylinder also a similarly constructed Transfer cylinder can be, it is the object of the invention this Develop the device so that the printing press for prints large widths can be designed, the machine with very high working speed should be operable and a quick and individual change of sleeves Transfer cylinders should be possible.
  • the sleeves of the transfer cylinder for example if the flexible layer is damaged or worn, for example a rubber layer, while maintaining the Transfer cylinder in the machine the sleeve quickly and individually switch. It is therefore not necessary to use the outer Remove the forme cylinder and impression cylinder beforehand.
  • Another important advantage of the invention is in that also a change of the transmission sleeve Transfer cylinder with the substrate pulled in, i.e. at pulled web is possible in a simple manner.
  • An offset printing press essentially consists of one Scaffolding with at least one printing unit in its stands one or more printing units is arranged.
  • Each Printing unit usually has a printing form cylinder, a transfer cylinder and an impression cylinder, the are rotatably mounted on pins. There is a on the pin Gearbox connected, one generated by a drive Transfers rotary motion to the cylinder. Between the transfer cylinder and the impression cylinder is a printing nip provided, through which the print carrier moves. As it moves, the print medium comes into immediate contact Contact with both the transfer cylinder and also with the impression cylinder. Patterns are printed on the print carrier. These patterns are on the printing form dyed by one color using an inking unit. Before applying the paint the printing form is moistened via the dampening system.
  • this indirect printing process is between the Printing form cylinder and the impression cylinder of the transfer cylinder with flexible surface, rotatable in the stands stored.
  • the surface of this transfer cylinder is also an interchangeable sleeve with a resilient Layer, for example rubber. This is the rubber Color transferred from the transfer cylinder to the pressure carrier designed as a web is delivered.
  • Fig. 1 is a multi-metal sleeve in a spatial representation 1 shown for the printing form.
  • the sleeve 1 consists of a carrier metal sleeve 2, on which an intermediate metal 3 and a surface metal 4 are applied.
  • the carrier metal sleeve 2 is about 0.3 mm thick and, as the name suggests, a carrier function.
  • a copper layer is used as the intermediate metal 3 of the usual thickness of approx. 2 to 6 ⁇ provided.
  • the surface metal 4 is chrome in a thickness of approx. 1 to 2 ⁇ .
  • the copper leads the Color, the chrome the water when the sleeve for printing is prepared as shown in Fig. 2.
  • the multi-metal sleeve 1 is on the printing form cylinder 5 raised.
  • the patterns 8 are on the cylinder 5 applied surface 9 of the sleeve 1 applied.
  • the sleeve 1 adheres to its surface 6 facing inner surface 1o firmly on the surface 6 so that they face each other when printing the surface 6 can not move.
  • the carrier metal 2 facing the cylinder 5 is provided, that on its outer surface facing away from the cylinder 5 is coated with the intermediate metal 3.
  • the intermediate metal 3 becomes a very thin layer of the surface metal 4 applied, in which the pattern 8 (Fig.4) incorporated becomes.
  • the pattern 8 Fig.4 incorporated becomes.
  • the pattern 8 come as carrier metal 2 Nickel or steel into consideration.
  • the sleeve 1 can be attached to the surface 6 of the cylinder 5 in various ways. For example, it is possible to heat the sleeve 1 evenly. It expands so that it can be pushed onto the surface 6 of the cylinder 5. During the subsequent cooling of the sleeve 1, it contracts again and thereby lies firmly on the surface 6, so that it adheres non-positively to it. Such shrinking of the sleeve 1 is low because the patterns are 8 applied over a sensitizing paint that is baked at a temperature of about 2oo o C on the surface 9 of the sleeve. 1 During this stoving of the sensitizing lacquer, the sleeve 1 heats up to a temperature suitable for shrinking on.
  • the transmission sleeve 1a shown in cross section.
  • a metal sleeve 2 used.
  • the carrier metal sleeve 2 is an approximately 0.3 mm thick metal tube.
  • the rubber covering 11 is about 1 to 5 mm thick.
  • the Sleeve 1 replaced on a cylinder 5, the stand 12, 13 is not removed.
  • the cylinder at one end 3o in the stator 12 overhung and at its other end 31 in one pivotable bearing 32 can be performed.
  • This pivotable Bearing 32 is pivotable about a pivot bearing 33 on the stand 13 stored and can in a direction facing away from the cylinder 5 be pivoted away from the stand 13.
  • After swiveling of the pivotable bearing 32 extends through the Stand 13 has a recess 34, the cross section of which is larger than the cross section of the sleeve 1. Through this recess 34 the sleeve 1 can be removed from the cylinder 5 and by a others will be replaced. After changing the sleeve 1 the pivotable bearing 32 in the direction of the cylinder 5 pivoted back so that the end 31 of the cylinder 5th is guided within the pivotable bearing 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Color Electrophotography (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Ink Jet (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

A method is proposed for the printing of print carriers with a print forme in the shape of a sleeve. The sleeve is attached in an exchangeable manner to a body capable of rotation, to at least one end of which free access can be gained for the exchange operation. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum indirekten Bedrucken eines bahnförmigen Bedruckstoffes, mit mindestens drei jeweils mit ihren Enden während des Druckbetriebes in Seitenwänden gelagerten Druckwerkszylindern unter Verwendung von auswechswelbaren Hülsen.The invention relates to a device for indirect printing a web-shaped printing material, with at least three each with their ends stored in side walls during printing Printing cylinders using of interchangeable sleeves.

Im Prinzip ist aus der britischen Patent schrift 763 639 eine Vorrichtung bekannt, die sich insbesondere zum Drucken von Geldscheinen oder Wertpapieren eignet und bei der während eines Druckvorganges eine Mehrzahl von Farben auf einen gemeinsamen Übertragungszylinder und von diesem auf einen Druckträger übertragen werden sollen. Dabei werden bei dieser bekannten Maschine offensichtlich sehr hohe Anforderungen an die Druckqualität, insbesondere an das Seiten- und an das Umfangsregister gestellt, weshalb u.a. schwere und massive Zylinder verwendet werden, die durch an ihren Stirnseiten bzw. an den Druckwerkseitenwänden angeordneten aufwendigen und voluminösen Stellvorrichtungen exakt einstellbar sind. Sämtliche Zylinder sind mit auswechselbaren Hülsen ausgestattet, wobei ein Hülsenwechsel ausschließlich bei völlig freigelegten Zylindern außerhalb der Maschine vorgenommen werden muß, denn über die erwähnten voluminösen Stellvorrichtungen ist u.a. das Aufbringen von Hülsen nicht möglich. Bedingt durch den Aufbau der Seitenwände dieser bekannten Mehrfarbendruckmaschine müssen des weiteren die oberhalb eines horizontal verlaufenden bahnförmigen Bedruckstoffes angeordneten Zylinder nach oben und die unter der Bedruckstoffbahn liegenden Zylinder nach unten ausgebaut werden, was u.a. sehr zeitaufwendig ist, und was insbesondere den Nachteil mit sich bringt, daß auch ein Hülsenwechsel an den innenliegenden, d.h. zwischen den äußeren Druckwerkzylindern angeordneten Transferzylindern ebenfalls nur im ausgebauten Zustand möglich ist und zwar nur, wenn zuvor die äußeren Formzylinder allesamt aus der Maschine ausgebaut wurden, da eine Herausnahme der inneren Übertragungszylinder ansonsten nicht möglich ist. Es ist auch bereits bekannt, Druckzylinder - exakter gesagt Formzylinder - innerhalb einer Maschine mit das Druckbild tragenden Hülsen zu versehen, wie beispielsweise die deutsche Offenlegungsschrift 27 24 653 zeigt. Wie bei der Vorrichtung gemäß dem britischen Patent 763 639 wird auch bei der Vorrichtung gemäß der DE-OS 27 24 653 eine relativ kurze Seitenwand verwendet, auf der sich ein für den Hülsenwechsel abnehmbares Zylinderlagergehäuse aufsetzen kann, so daß es mit der Seitenwand verschraubbar ist.In principle, is from the British patent specification 763 639 Device known which are particularly suitable for printing banknotes or securities is suitable and in which a plurality of during a printing process Colors on and from a common transfer cylinder a print medium should be transferred. Doing this known machine obviously very high demands on the Print quality, especially on the side and on the Circumferential register, which is why heavy and massive cylinders can be used by on their end faces or on the Printing unit side walls arranged complex and voluminous Actuators are exactly adjustable. All cylinders are equipped with interchangeable sleeves, one sleeve change only with completely exposed cylinders outside the Machine must be made because of the voluminous mentioned Actuators include the application of sleeves is not possible. Due to the construction of the side walls of this known Multi-color printing press must also be the one above horizontally extending web-shaped printing material Cylinder upwards and the ones under the printing material web Cylinders are removed downwards, which among other things very time consuming is, and what has the particular disadvantage that also a Changing sleeves on the inside, i.e. between the outer Transfer cylinders arranged transfer cylinders also only in removed condition is possible and only if the outer Forme cylinders were all removed from the machine as one Otherwise the internal transfer cylinders cannot be removed is. It is also already known, printing cylinders - to be more precise Forme cylinder - within a machine with the printed image To provide sleeves, such as the German Publication No. 27 24 653 shows. As with the device according to British Patent 763,639 also applies to the device DE-OS 27 24 653 uses a relatively short side wall on the there is a removable cylinder bearing housing for changing the sleeve can put on so that it can be screwed to the side wall.

Ausgehend von einer Vorrichtung für das indirekte Druckverfahren bei der zwischen einem Formzylinder und einem Gegendruckzylinder ein mit einer Hülse versehener Übertragungszylinder angeordnet ist, wobei der Gegendruckzylinder ebenfalls ein gleichartig aufgebauter Übertragungszylinder sein kann, ist es Aufgabe der Erfindung diese Vorrichtung so weiterzubilden, daß die Druckmaschine für Drucke großer Breiten ausgelegt werden kann, wobei die Maschine mit sehr hoher Arbeitsgeschwindigkeit betreibbar sein soll und wobei ein schneller und individueller Wechsel von Hülsen an Übertragungszylindern möglich sein soll.Starting from a device for indirect printing the one between a forme cylinder and an impression cylinder a sleeve provided transfer cylinder is arranged, the Impression cylinder also a similarly constructed Transfer cylinder can be, it is the object of the invention this Develop the device so that the printing press for prints large widths can be designed, the machine with very high working speed should be operable and a quick and individual change of sleeves Transfer cylinders should be possible.

Diese Aufgabe wird durch die Anwendung aller Merkmale des Ansprüchs 1 gelöst. This task is accomplished by applying all the features of claim 1 solved.

Mit der vorliegenden Erfindung ist es möglich, die Hülsen der Übertragungszylinder, beispielsweise bei einer Beschädigung oder Abnützung der flexiblen Schicht, beispielsweise einer Gummischicht, unter Beibehaltung des Transferzylinders in der Maschine die Hülse schnell und individuell zu wechseln. Es ist somit nicht erforderlich, die äußeren Formzylinder und Gegendruckzylinder vorher auszubauen. With the present invention it is possible the sleeves of the transfer cylinder, for example if the flexible layer is damaged or worn, for example a rubber layer, while maintaining the Transfer cylinder in the machine the sleeve quickly and individually switch. It is therefore not necessary to use the outer Remove the forme cylinder and impression cylinder beforehand.

Ein weiterer wesentlicher Vorteil der Erfindung besteht darin, daß auch ein Wechsel der Übertragungshülse der Übertragungszylinder bei eingezogenem Bedruckstoff, d.h. bei eingezogener Bahn in einfacher Weise möglich ist. Another important advantage of the invention is in that also a change of the transmission sleeve Transfer cylinder with the substrate pulled in, i.e. at pulled web is possible in a simple manner.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, in denen bevorzugte Ausführungsformen der Erfindung beispielsweise veranschaulicht sind. Further details of the invention emerge from the following detailed description and the attached Drawings in which preferred embodiments of the invention are illustrated, for example.

In den Zeichnungen zeigen

Fig. 1
eine räumliche Darstellung einer Mehrmetallhülse,
Fig. 2
eine räumliche Darstellung einer auf einen Zylinder aufgezogenen Hülse,
Fig. 3
eine vergrößerte Ausschnittdarstellung der Rohform einer Mehrmetallhülse,
Fig. 4
eine vergrößerte Ausschnittdarstellung einer Druckform einer Mehrmetallhülse,
Fig. 5
einen Querschnitt durch eine mit einem Gummibelag beschichtete Übertragungshülse,
Fig. 6
eine schematische Darstellung eines Teils einer Druckmaschine mit einem einseitig vom Zylinder abgeklappten Lager.
Show in the drawings
Fig. 1
a spatial representation of a multi-metal sleeve,
Fig. 2
a spatial representation of a sleeve mounted on a cylinder,
Fig. 3
an enlarged detail of the raw shape of a multi-metal sleeve,
Fig. 4
FIG. 2 shows an enlarged detail representation of a printing form of a multi-metal sleeve,
Fig. 5
a cross section through a transmission sleeve coated with a rubber covering,
Fig. 6
is a schematic representation of part of a printing press with a bearing folded away from the cylinder on one side.

Eine Offset-Druckmaschine besteht im wesentlichen aus einem Gerüst, in dessen Ständern mindestens ein Druckwerk mit einer oder mehreren Druckeinheiten angeordnet ist. Jede Druckeinheit hat in der Regel einen Druckformzylinder, einen Übertragungszylinder und einen Gegendruckzylinder, die drehbar auf Zapfen gelagert sind. An den Zapfen ist ein Getriebe angeschlossen, das eine von einem Antrieb erzeugte Drehbewegung auf die Zylinder überträgt. Zwischen dem Übertragungszylinder und dem Gegendruckzylinder ist ein Druckspalt vorgesehen, durch den sich der Druckträger hindurchbewegt. Bei seiner Bewegung kommt der Druckträger in unmittelbaren Kontakt sowohl mit dem Übertragungszylinder als auch mit dem Gegendruckzylinder. Dabei drucken sich Muster auf dem Druckträger ab. Diese Muster werden auf der Druckform über ein Farbwerk von einer Farbe eingefärbt. Vor der Farbauftragung wird die Druckform über das Feuchtwerk befeuchtet.An offset printing press essentially consists of one Scaffolding with at least one printing unit in its stands one or more printing units is arranged. Each Printing unit usually has a printing form cylinder, a transfer cylinder and an impression cylinder, the are rotatably mounted on pins. There is a on the pin Gearbox connected, one generated by a drive Transfers rotary motion to the cylinder. Between the transfer cylinder and the impression cylinder is a printing nip provided, through which the print carrier moves. As it moves, the print medium comes into immediate contact Contact with both the transfer cylinder and also with the impression cylinder. Patterns are printed on the print carrier. These patterns are on the printing form dyed by one color using an inking unit. Before applying the paint the printing form is moistened via the dampening system.

Bei diesem indirekten Druckverfahren ist zwischen dem Druckformzylinder und dem Gegendruckzylinder der Übertragungszylinder mit nachgiebiger Oberfläche in den Ständern drehbar gelagert. Die Oberfläche dieses Übertragungszylinders ist ebenfalls eine auswechselbare Hülse mit einer nachgiebigen Schicht, beispielsweise Gummi. Auf dieses Gummi wird die Farbe übertragen, die von dem Übertragungszylinder an den als Bahn ausgebildeten Druckträger abgegeben wird.In this indirect printing process is between the Printing form cylinder and the impression cylinder of the transfer cylinder with flexible surface, rotatable in the stands stored. The surface of this transfer cylinder is also an interchangeable sleeve with a resilient Layer, for example rubber. This is the rubber Color transferred from the transfer cylinder to the pressure carrier designed as a web is delivered.

In der Fig. 1 ist in räumlicher Darstellung eine Mehrmetallhülse 1 für die Druckform gezeigt. Die Hülse 1 besteht aus einer Trägermetallhülse 2, auf die ein Zwischenmetall 3 und ein Oberflächenmetall 4 aufgebracht sind. Die Trägermetallhülse 2 ist etwa o,3 mm stark und hat, wie der Name besagt, eine Trägerfunktion. Als Zwischenmetall 3 wird eine Kupferschicht von bei Offsetdruckformen üblicher Stärke von ca. 2 bis 6 µ vorgesehen. Das Oberflächenmetall 4 ist Chrom in einer Stärke von ca. 1 bis 2 µ. Das Kupfer führt die Farbe, das Chrom das Wasser, wenn die Hülse für den Druckvorgang wie in Fig. 2 gezeigt vorbereitet ist. In Fig. 1 is a multi-metal sleeve in a spatial representation 1 shown for the printing form. The sleeve 1 consists of a carrier metal sleeve 2, on which an intermediate metal 3 and a surface metal 4 are applied. The carrier metal sleeve 2 is about 0.3 mm thick and, as the name suggests, a carrier function. A copper layer is used as the intermediate metal 3 of the usual thickness of approx. 2 to 6 µ provided. The surface metal 4 is chrome in a thickness of approx. 1 to 2 µ. The copper leads the Color, the chrome the water when the sleeve for printing is prepared as shown in Fig. 2.

In der Fig. 2 ist die Mehrmetallhülse 1 auf den Druckformzylinder 5 aufgezogen. Auf der Oberfläche 6 des Zylinders 3 haftet kraftschlüssig die Hülse 1, die eine sehr geringe Wandstärke 7 besitzt. Die Muster 8 sind auf der dem Zylinder 5 abgewandten Oberfläche 9 der Hülse 1 aufgetragen. Wie die Fig. 3 zeigt, haftet die Hülse 1 mit ihrer der Oberfläche 6 zugewandten inneren Oberfläche 1o kraftschlüssig fest auf der Oberfläche 6, so daß sie sich beim Drucken gegenüber der Oberfläche 6 nicht verschieben kann.2, the multi-metal sleeve 1 is on the printing form cylinder 5 raised. On the surface 6 of the cylinder 3 adheres non-positively to the sleeve 1, which is very low Wall thickness 7 has. The patterns 8 are on the cylinder 5 applied surface 9 of the sleeve 1 applied. As the Fig. 3 shows, the sleeve 1 adheres to its surface 6 facing inner surface 1o firmly on the surface 6 so that they face each other when printing the surface 6 can not move.

Bei der in einer Mehrmetallform ausgebildeten Hülse 1 ist das dem Zylinder 5 zugewandte Trägermetall 2 vorgesehen, das auf seiner dem Zylinder 5 abgewandten äußeren Oberfläche mit dem Zwischenmetall 3 beschichtet ist. Auf dieses Zwischenmetall 3 wird eine sehr dünne Schicht des Oberflächenmetalls 4 aufgetragen, in welches das Muster 8 (Fig.4) eingearbeitet wird. Als Trägermetall 2 kommen beispielsweise Nickel oder Stahl in Betracht. Als Zwischenmetall 3 wird Kupfer gewählt, auf das Chrom als Oberflächenmetall 4 aufgetragen wird. Derartige Mehrmetallformen sind zur Durchführung des Offset-Druckverfahrens gut geeignet.In the case of the sleeve 1 formed in a multi-metal mold the carrier metal 2 facing the cylinder 5 is provided, that on its outer surface facing away from the cylinder 5 is coated with the intermediate metal 3. On this intermediate metal 3 becomes a very thin layer of the surface metal 4 applied, in which the pattern 8 (Fig.4) incorporated becomes. For example, come as carrier metal 2 Nickel or steel into consideration. As intermediate metal 3 Copper chosen, applied to the chrome as surface metal 4 becomes. Such multi-metal forms are to be carried out of the offset printing process well suited.

Die Hülse 1 kann auf verschiedene Weise auf der Oberfläche 6 des Zylinders 5 befestigt werden. Es ist beispielsweise möglich, die Hülse 1 gleichmäßig zu erwärmen. Dabei dehnt sie sicht, so daß sie auf die Oberfläche 6 des Zylinders 5 aufgeschoben werden kann. Bei der anschließenden Abkühlung der Hülse 1 zieht sie sich wieder zusammen und legt sich dabei fest auf die Oberfläche 6 auf, so daß sie auf dieser kraftschlüssig haftet. Eine derartige Aufschrumpfung der Hülse 1 ist deshalb günstig, weil die Muster 8 über einen Sensibilisierungslack aufgebracht werden, der bei einer Temperatur von etwa 2ooo C auf der Oberfläche 9 der Hülse 1 eingebrannt wird. Bei diesem Einbrennen des Sensibilisierungslackes erwärmt sich die Hülse 1 auf eine zum Aufschrumpfen geeignete Temperatur.The sleeve 1 can be attached to the surface 6 of the cylinder 5 in various ways. For example, it is possible to heat the sleeve 1 evenly. It expands so that it can be pushed onto the surface 6 of the cylinder 5. During the subsequent cooling of the sleeve 1, it contracts again and thereby lies firmly on the surface 6, so that it adheres non-positively to it. Such shrinking of the sleeve 1 is low because the patterns are 8 applied over a sensitizing paint that is baked at a temperature of about 2oo o C on the surface 9 of the sleeve. 1 During this stoving of the sensitizing lacquer, the sleeve 1 heats up to a temperature suitable for shrinking on.

In der Fig. 5 ist eine mit einem Gummibelag 11 beschichtete Übertragungshülse 1a im Querschnitt gezeigt. Auch hier wird eine Trägermetallhülse 2 verwendet. Die Trägermetallhülse 2 ist ein etwa o,3 mm starkes Metallrohr. Der Gummibelag 11 ist etwa 1 bis 5 mm stark.5 is coated with a rubber covering 11 Transmission sleeve 1a shown in cross section. Here too a metal sleeve 2 used. The carrier metal sleeve 2 is an approximately 0.3 mm thick metal tube. The rubber covering 11 is about 1 to 5 mm thick.

Zum Auswechseln der Hülse 1 kann der Zylinder 5 bzw. der Zylindermantel 2o vollkommen aus dem Ständer 12, 13 herausgenommen werden. Bevorzugt verbleibt der Zylinder 5 bzw. Zylindermantel 2o jedoch innerhalb des Ständers 12, 13. To replace the sleeve 1, the cylinder 5 or Cylinder jacket 2o completely removed from the stand 12, 13 become. The cylinder 5 or Cylinder jacket 2o, however, within the stand 12, 13.

In der in Fig. 6 dargestellten Ausführungsform wird die Hülse 1 auf einem Zylinder 5 ausgewechselt, der den Ständern 12, 13 nicht entnommen wird. Zu diesem Zweck kann beispielsweise der Zylinder an seinem einen Ende 3o im Ständer 12 fliegend gelagert und an seinem anderen Ende 31 in einem verschwenkbaren Lager 32 geführt sein. Dieses verschwenkbare Lager 32 ist um ein Schwenklager 33 am Ständer 13 verschwenkbar gelagert und kann in eine vom Zylinder 5 abgewandte Richtung vom Ständer 13 weggeschwenkt werden. Nach dem Abschwenken des verschwenkbaren Lagers 32 erstreckt sich durch den Ständer 13 eine Ausnehmung 34, deren Querschnitt größer ist als der Querschnitt der Hülse 1. Durch diese Ausnehmung 34 kann die Hülse 1 vom Zylinder 5 abgezogen und durch eine andere ersetzt werden. Nach dem Auswechseln der Hülse 1 wird das verschwenkbare Lager 32 in Richtung auf den Zylinder 5 zurückgeschwenkt, so daß das Ende 31 des Zylinders 5 innerhalb des verschwenkbaren Lagers 32 geführt wird. In the embodiment shown in Fig. 6, the Sleeve 1 replaced on a cylinder 5, the stand 12, 13 is not removed. For this purpose, for example the cylinder at one end 3o in the stator 12 overhung and at its other end 31 in one pivotable bearing 32 can be performed. This pivotable Bearing 32 is pivotable about a pivot bearing 33 on the stand 13 stored and can in a direction facing away from the cylinder 5 be pivoted away from the stand 13. After swiveling of the pivotable bearing 32 extends through the Stand 13 has a recess 34, the cross section of which is larger than the cross section of the sleeve 1. Through this recess 34 the sleeve 1 can be removed from the cylinder 5 and by a others will be replaced. After changing the sleeve 1 the pivotable bearing 32 in the direction of the cylinder 5 pivoted back so that the end 31 of the cylinder 5th is guided within the pivotable bearing 32.

Der Austauschvorgang der Hülsen 1 ist in der Fig. 6 anhand der Druckformhülse 1 behandelt worden. Für die Übertragungshülse 1 a mit der Gummischicht 11 gelten jedoch die gleichen Verfahrensschritte und die gleichen Konstruktionsprinzipien.The exchange process of the sleeves 1 is shown in FIG. 6 treated with the printing form sleeve 1. For the transfer sleeve 1 a with the rubber layer 11 apply the same process steps and the same design principles.

Claims (8)

  1. Apparatus for printing on a print material in web form by the offset process, comprising three printing mechanism cylinders which are respectively mounted with their ends in side walls (12, 13) during the printing operation, wherein the plate cylinder with which an inking and moistening mechanism is associated carries a sleeve which is interchangeable upon a change in the print image and the middle cylinder is a blanket cylinder which is provided with an interchangeable sleeve (1a) with a flexible surface (11) and by way of which a print image (8) can be applied from the outer plate cylinder on to the print material in web form which is guided between the middle blanket cylinder (5) and an impression cylinder, wherein the blanket cylinder (5) is fixedly mounted at one end (30) in a side wall (12) and at the other end (31) can be released from the associated side wall (13) when the machine is stopped in such a way that arranged in the last-mentioned side wall (13) opposite the blanket cylinder (5) is an opening (34) which is larger than the diameter of the sleeve (1a) which is provided with an elastic layer (11) and which can be fitted on to the blanket cylinder (5) so that the sleeve (1a) can be pushed on to the blanket cylinder (5) from the side through the opening (34) at the height of the blanket cylinder (5), wherein the sleeve (1a) can be acted upon by the pressure of a medium on its inside surface (10), it can be stretched, it can be pushed on to the cylinder (5), and it can then be relieved of pressure so that the sleeve (1a) is force-lockingly fixed on the cylinder (5), and the blanket cylinder (5) is of a lightweight structure in the form of a tube.
  2. Apparatus according to claim 1 characterised in that the sleeve (1a) can be pushed on to the surfaces (6) of the cylinders (5) and then the cylinders (5) can be increased in terms of their diameter and, when that happens, their surfaces (6) can be pressed against the inside surfaces (10) of the sleeves (1a).
  3. Apparatus according to claim 2 characterised in that pressure can be hydraulically applied to the surfaces of the cylinders (5).
  4. Apparatus according to claim 1 characterised in that a mounting (32) can be pivoted away from one end (31) of a cylinder (5) and the sleeve (1a) can be drawn off the surface of the cylinder (5) over said end (31) of the cylinder (5), replaced by another, and the other sleeve (1a) can be pushed on to the cylinder (5) over said end (31).
  5. Apparatus according to claim 1 characterised in that the cylinders (5) are cylinder shells in the form of hollow cylinders.
  6. Apparatus according to claim 5 characterised in that provided between the sleeve (1a) and a carrier surface which defines the cylinder (5) relative to the sleeve (1a) is an air cushion which lifts the sleeve off the carrier surface for the purposes of the fitting operation.
  7. Apparatus according to claim 1 characterised in that the cylinders (5) are mounted in overhung relationship at their ends (30) which are fixedly mounted in the printing machine.
  8. Apparatus according to one of claims 1 to 7 characterised in that on their surfaces which are towards the print carrier the transfer sleeves (1a) are provided with an elastic covering which seamlessly surrounds the sleeves.
EP86115898A 1985-12-11 1986-11-15 Device for printing a web Expired - Lifetime EP0225509B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP92121151A EP0549936B1 (en) 1985-12-11 1986-11-15 Transfer cylinder with exchangeable sleeve, supported between two printing unit side walls
AT86115898T ATE93772T1 (en) 1985-12-11 1986-11-15 DEVICE FOR PRINTING A WEB.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853543704 DE3543704A1 (en) 1985-12-11 1985-12-11 DEVICE AND METHOD FOR PRINTING A TRAIN
DE3543704 1985-12-11

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP92121151A Division EP0549936B1 (en) 1985-12-11 1986-11-15 Transfer cylinder with exchangeable sleeve, supported between two printing unit side walls
EP92121151.2 Division-Into 1992-12-11

Publications (4)

Publication Number Publication Date
EP0225509A2 EP0225509A2 (en) 1987-06-16
EP0225509A3 EP0225509A3 (en) 1989-04-12
EP0225509B1 EP0225509B1 (en) 1993-09-01
EP0225509B2 true EP0225509B2 (en) 2000-05-24

Family

ID=6288148

Family Applications (2)

Application Number Title Priority Date Filing Date
EP86115898A Expired - Lifetime EP0225509B2 (en) 1985-12-11 1986-11-15 Device for printing a web
EP92121151A Revoked EP0549936B1 (en) 1985-12-11 1986-11-15 Transfer cylinder with exchangeable sleeve, supported between two printing unit side walls

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP92121151A Revoked EP0549936B1 (en) 1985-12-11 1986-11-15 Transfer cylinder with exchangeable sleeve, supported between two printing unit side walls

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US (2) US4913048A (en)
EP (2) EP0225509B2 (en)
JP (1) JP2519225B2 (en)
KR (1) KR100188463B1 (en)
AT (1) ATE93772T1 (en)
BR (1) BR8606104A (en)
CS (1) CS274722B2 (en)
DD (1) DD250900A5 (en)
DE (3) DE3543704A1 (en)
ES (1) ES2044831T3 (en)
RU (1) RU1828434C (en)

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Also Published As

Publication number Publication date
ES2044831T3 (en) 1994-01-16
DE3688969D1 (en) 1993-10-07
EP0225509A2 (en) 1987-06-16
DE3650281D1 (en) 1995-04-27
JP2519225B2 (en) 1996-07-31
EP0549936B1 (en) 1995-03-22
EP0225509A3 (en) 1989-04-12
DE3543704C2 (en) 1993-06-17
ATE93772T1 (en) 1993-09-15
RU1828434C (en) 1993-07-15
USRE34970E (en) 1995-06-20
EP0549936A1 (en) 1993-07-07
DE3543704A1 (en) 1987-06-19
US4913048A (en) 1990-04-03
KR870005807A (en) 1987-07-07
BR8606104A (en) 1987-09-15
DD250900A5 (en) 1987-10-28
EP0225509B1 (en) 1993-09-01
JPS62218130A (en) 1987-09-25
KR100188463B1 (en) 1999-06-01
CS274722B2 (en) 1991-10-15
CS915186A2 (en) 1990-09-12

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