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EP0819550B1 - Rubber sleeve for rotary offset printing presses - Google Patents

Rubber sleeve for rotary offset printing presses Download PDF

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Publication number
EP0819550B1
EP0819550B1 EP97106952A EP97106952A EP0819550B1 EP 0819550 B1 EP0819550 B1 EP 0819550B1 EP 97106952 A EP97106952 A EP 97106952A EP 97106952 A EP97106952 A EP 97106952A EP 0819550 B1 EP0819550 B1 EP 0819550B1
Authority
EP
European Patent Office
Prior art keywords
layer
sleeve
sleeve according
carrier
junction point
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
EP97106952A
Other languages
German (de)
French (fr)
Other versions
EP0819550A3 (en
EP0819550A2 (en
Inventor
Peter Knauer
Eduard Dr. Hoffmann
Paul Steidle
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0819550A2 publication Critical patent/EP0819550A2/en
Publication of EP0819550A3 publication Critical patent/EP0819550A3/en
Application granted granted Critical
Publication of EP0819550B1 publication Critical patent/EP0819550B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer

Definitions

  • the invention relates to a rubber sleeve according to the preamble of claim 1.
  • Such sleeves are, for example, from US Pat. Nos. 5,429,048, 5,323 702, 5 440 981, 5 304 267 or EP-A-0 514 344.
  • a disadvantage of this known It is rubber cylinder sleeves (transfer cylinder sleeves) that the middle and lower Layers of the same must be at least partially continuous. This affects particularly disadvantageous on the manufacturing costs.
  • the object of the present invention is a generic Rubber cylinder sleeve, especially for offset web-fed rotary printing presses, in Compared to the known sleeves of this type cheaper to manufacture, at about the same or improved print quality and behavior.
  • Fig. 1 shows a partial cross section of a particular embodiment the rubber cylinder sleeve according to the invention (transfer cylinder sleeve), as they used particularly with advantages in an offset web-fed rotary printing press can be on a rubber cylinder.
  • Rubber cylinder sleeves essentially made of an inner, preferably metallic Sleeve.
  • a glass fiber reinforced sleeve GRP
  • These sleeves are in theirs Thickness so dimensioned that when it is pushed onto the transfer cylinder, the usually in printing presses working according to indirect printing processes Rubber cylinder is called, can be slightly expanded by air. This is advantageous since, as is shown in particular in US Pat. No. 5,429,048, one such sleeve through the side wall of a printing press on the previously one-sided exposed transfer cylinder can be pushed.
  • At least one is on this inner, preferably metallic support sleeve another layer - directly or indirectly - applied, which is compressible, i.e. the Has air pockets.
  • At least one top layer is over this layer provided, which can for example consist of an elastomeric material. With this material is from a forme cylinder or from a printing form, for example an offset printing plate or a sleeve-shaped offset printing form, the image to be printed is transferred and transferred to a print carrier.
  • the compressible layer e.g. an elastomer with Air pockets
  • another non-stretchable layer provided, for example in the form of a hard elastomeric material or for example in the form of short fibers (e.g. threads) that are also in the hard elastomeric material can be embedded.
  • stretchable layer or non-stretchable particles, such as threads or pieces of thread be introduced directly into the volume-compressible layer mentioned above.
  • Transfer cylinder with 1 (blanket cylinder) and the openings provided on its surface or nozzles with 1a.
  • the one applied in the manner described above Transfer cylinder sleeve 2 (blanket sleeve) has, as explained above, a metal sleeve 3, preferably expandable by air, on which one compressible layer 4 is vulcanized or glued.
  • On the compressible Layer 4 is a layer of a non-stretchable material 5, preferably one hard elastomer layer with short fibers, which are not specified, intended.
  • a cover layer 6 is provided on the non-stretchable layer 5, For example, from an elastic material with the offset printing process can be printed.
  • a metal sleeve is preferably used as the carrier sleeve 3 used, for example made of steel, which is expandable by air and the one Has joint 7.
  • This joint 7 can for example be a weld be, which is advantageously formed in that the metallic sleeve a plate is made, the ends of which are welded together so that the Joint 7 results.
  • a sleeve or cylindrical Rubber or plastic layer or a sleeve or cylindrical metallic Beams are not endless in the longitudinal or axial direction, i.e. not seamless or not is continuous.
  • the compressible layer 4 also has a joint 8 which can be produced in that the compressible layer 4 on the metal sleeve 3 is glued in the form of a rubber blanket so that the joint 8 through the ends the rubber layer 4 are formed.
  • a non-stretchable layer 5 on the compressible layer 4 these also have a joint 9 according to the invention, which can be formed in the manner described above.
  • such a layer structure i.e. a carrier sleeve 3 preferably made of metal with a joint 7 and at least an applied compressible layer 4 with a joint 8, a Cover layer 6 applied without a joint.
  • cover layer 6 - like the compressible layer 4 - Has air pockets, so that the cover layer 6 has a certain Compressibility has what is advantageous compared to the prior art and too lead to better printing results or printing behavior and better web guidance can.
  • the sleeve according to the invention can also be particularly advantageous in this way be made that a welded metal sleeve 3 made of steel or aluminum or, for example, a CFRP sleeve is used with a joint on which a conventional offset rubber blanket, e.g. B. with a compressible layer, applied, for example glued. After that the top layer of the conventional rubber blanket is removed, for example sanded and in their place a continuous, i.e. a bumpless Cover layer 6 applied, for example vulcanized.
  • a conventional offset rubber blanket e.g. B. with a compressible layer
  • a continuous, i.e. a bumpless Cover layer 6 applied, for example vulcanized.
  • a sleeve structure much cheaper and has a number of advantages. In this case are the joints 8, 9 one above the other, since they are the ends of the conventional Rubber blanket, which was glued to the carrier sleeve 3, represent.
  • the butt joints 8, 9 can advantageously - but not necessarily - be arranged directly above the joint 7.
  • the individual joints 7, 8, 9 can also be seen circumferentially at others Digits, i.e. they do not have to be on top of one another, as shown.
  • the advantageous arrangement of short is not stretchable pieces, such as threads.
  • the sleeve according to the invention offers a variety of uses, which are not are only limited to the use of offset web-fed rotary presses.
  • this sleeve can also be used for other indirect printing processes, such as indirect gravure, are used or used as a roller.
  • a particular advantage is that a circumferential registration, that is, an application the sleeve on the cylinder in a predetermined circumferential position is not required and that nevertheless all essential advantages can be achieved in the production, which are typical for finite transfer media (rubber blankets or sleeves).
  • layer 3 from fiber-reinforced hard rubber - with or without seam - the z. B. is expandable by compressed air, and this can be a compressible layer, then a semi-compressible layer, which will be fiber reinforced can, and then a printing top layer can be arranged, which is very advantageous is.
  • Fig. 2 shows a carrier sleeve 3.1 with Associated transfer cylinder 1.1 with a correspondingly tapered outer surface.
  • Radial bores 1a are arranged on the lateral surface, which are connected to them via a line supply compressed air against the inner surface of the carrier sleeve 3.1 and this to Widen your transition easier.
  • the carrier sleeve 3.1 is partially shown in longitudinal section in FIG. 3. it consists of a metal, advantageously nickel. Its outer surface is cylindrical, taking accordingly their wall thickness towards the end with the smaller inside diameter.
  • the Carrier sleeve 3.1 can be created, for example, by electroplating and then ground become.
  • the 4 contains an inner carrier 11 made of metal, advantageously nickel, with an inner and outer conical surface.
  • the carrier 11 can be formed from a sheet metal, with the bent towards each other Form a joint.
  • the joint can also be welded, for example using a laser beam.
  • On the carrier 11 is a solid plastic layer 12 with a cylindrical outer surface arranged. Hard rubber is advantageous vulcanized or glued on and then sanded.
  • the plastic layer 12 can be carried out with or without impact.
  • the carrier sleeve 3.3 partially shown in FIG. 5 consists of glass fiber reinforced Plastic (GRP).
  • GRP glass fiber reinforced Plastic
  • the carrier sleeves shown 3.1 to 3.3 carry, not shown, one of the coatings described above.

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  • Printing Plates And Materials Therefor (AREA)

Description

Die Erfindung betrifft eine Gummihülse gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a rubber sleeve according to the preamble of claim 1.

Derartige Hülsen sind beispielsweise aus den US-Patentschriften 5 429 048, 5 323 702, 5 440 981, 5 304 267 oder EP-A-0 514 344 bekannt. Ein Nachteil dieser bekannten Gummizylinderhülsen (Transferzylinderhülsen) ist es, daß die mittleren und unteren Schichten derselben zumindest teilweise kontinuierlich sein müssen. Dies wirkt sich besonders nachteilig auf die Herstellkosten aus.Such sleeves are, for example, from US Pat. Nos. 5,429,048, 5,323 702, 5 440 981, 5 304 267 or EP-A-0 514 344. A disadvantage of this known It is rubber cylinder sleeves (transfer cylinder sleeves) that the middle and lower Layers of the same must be at least partially continuous. This affects particularly disadvantageous on the manufacturing costs.

Aus der US-Patentschrift 5 351 615 ist es außerdem bekannt, auf eine Trägerplatte ein Gummituch aufzubringen, z.B. durch Kleben. Danach wird diese Anordnung zu einer Gummizylinderhülse geformt und sowohl die aufeinander zuweisenden Enden der Trägerplatte als auch die des Gummituches, bzw. Gummibelages miteinander verbunden, z.B. durch Verschweißen oder Verkleben. Diese Anordnung zeigt zwar keine Spalt mehr, jedoch verbleibt an der Oberfläche eine Verbindungsnaht, bzw. eine Stoßstelle.From US Pat. No. 5,351,615 it is also known to be on a carrier plate apply a rubber blanket, e.g. by gluing. After that, this arrangement becomes too molded a rubber cylinder sleeve and both the facing ends the carrier plate as well as that of the rubber blanket or rubber covering with each other connected, e.g. by welding or gluing. This arrangement shows no more gap, but a connection seam remains on the surface, or a joint.

Aufgabe der vorliegenden Erfindung ist es, eine gattungsbildende Gummizylinderhülse, insbesondere für Offset-Rollenrotationsdruckmaschinen, im Vergleich zu den bekannten Hülsen dieser Art billiger herzustellen, bei etwa gleicher oder verbesserter Druckqualität und Verhalten.The object of the present invention is a generic Rubber cylinder sleeve, especially for offset web-fed rotary printing presses, in Compared to the known sleeves of this type cheaper to manufacture, at about the same or improved print quality and behavior.

Die Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und aus der Beschreibung in Verbindung mit den Zeichnungen. Fig. 1 zeigt einen Teil-Querschnitt einer besonderen Ausführungsform der erfindungsgemäßen Gummizylinderhülse (Transferzylinderhülse), wie sie insbesondere mit Vorteilen in einer Offset-Rollenrotationsdruckmaschine verwendet werden kann, auf einem Gummizylinder.The task is accomplished through the application of the characteristics of the characteristic part of claim 1 solved. Advantageous further developments of the invention result from the subclaims and from the description in connection with the Drawings. Fig. 1 shows a partial cross section of a particular embodiment the rubber cylinder sleeve according to the invention (transfer cylinder sleeve), as they used particularly with advantages in an offset web-fed rotary printing press can be on a rubber cylinder.

Wie aus dem Stand der Technik, wie er beispielsweise im vorangehenden dargelegt wurde, bekannt ist, besteht der grundsätzliche Aufbau derartiger Gummizylinderhülsen im wesentlichen aus einer inneren, vorzugsweise metallischen Hülse. Jedoch kann auch mit Vorteil anstelle der inneren Metallhülse beispielsweise eine glasfaserverstärkte Hülse (GFK) verwendet werden. Diese Hülsen sind in ihrer Dicke so bemessen, daß sie beim Aufschieben auf den Transferzylinder, der üblicherweise bei nach indirekten Druckverfahren arbeitenden Druckmaschinen Gummizylinder genannt wird, durch Luft geringfügig aufgeweitet werden können. Dies ist von Vorteil, da dadurch, wie insbesondere die US-PS 5 429 048 zeigt, eine derartige Hülse durch die Seitenwand einer Druckmaschine auf den zuvor einseitig freigelegten Übertragungszylinder aufgeschoben werden kann. Dabei wird eben mit Hilfe von in dem Übertragungszylinder vorgesehenen Öffnungen die aufzuschiebende Hülse mit Druckluft aufgeweitet, so daß ein Aufbringen in einfacher Weise möglich ist, wonach nach Wegnahme der Druckluft die aufgeschobene Hülse einen festen Sitz auf dem Übertragungszylinder einnimmt.As from the prior art, as set forth in the foregoing, for example has been known, there is a basic structure of such Rubber cylinder sleeves essentially made of an inner, preferably metallic Sleeve. However, for example, can also be used instead of the inner metal sleeve a glass fiber reinforced sleeve (GRP) can be used. These sleeves are in theirs Thickness so dimensioned that when it is pushed onto the transfer cylinder, the usually in printing presses working according to indirect printing processes Rubber cylinder is called, can be slightly expanded by air. This is advantageous since, as is shown in particular in US Pat. No. 5,429,048, one such sleeve through the side wall of a printing press on the previously one-sided exposed transfer cylinder can be pushed. It is just with With the help of openings provided in the transfer cylinder sleeve to be pushed open with compressed air, so that application in easier It is possible, after which the pushed-on sleeve after removal of the compressed air takes a firm seat on the transfer cylinder.

Auf dieser inneren, vorzugsweise metallischen Trägerhülse ist mindestens eine weitere Schicht - direkt oder indirekt - aufgebracht, die kompressibel ist, d.h., die Lufteinschlüsse aufweist. Über dieser Schicht ist zumindest eine Deckschicht vorgesehen, die beispielsweise aus einem elastomeren Material bestehen kann. Mit diesem Material wird von einem Formzylinder bzw. von einer Druckform, beispielsweise einer Offsetdruckplatte oder einer hülsenförmigen Offsetdruckform, das zu druckende Bild übernommen und auf einen Druckträger übertragen.At least one is on this inner, preferably metallic support sleeve another layer - directly or indirectly - applied, which is compressible, i.e. the Has air pockets. At least one top layer is over this layer provided, which can for example consist of an elastomeric material. With this material is from a forme cylinder or from a printing form, for example an offset printing plate or a sleeve-shaped offset printing form, the image to be printed is transferred and transferred to a print carrier.

Vorzugsweise ist zwischen der kompressiblen Schicht (z. B. ein Elastomer mit Lufteinschlüssen) und der Deckschicht eine weitere nicht dehnbare Schicht vorgesehen, beispielsweise in Form eines harten elastomeren Materials oder beispielsweise in Form von kurzen Fasern (z. B. Fäden), die auch in dem harten elastomeren Material eingebettet sein können. Alternativ kann auch eine nicht dehnbare Schicht oder nicht dehnbare Teilchen, wie Fäden oder Stücke aus Fäden, in der vorgenannten volumenkompressiblen Schicht direkt eingebracht werden.There is preferably between the compressible layer (e.g. an elastomer with Air pockets) and the top layer another non-stretchable layer provided, for example in the form of a hard elastomeric material or for example in the form of short fibers (e.g. threads) that are also in the hard elastomeric material can be embedded. Alternatively, one cannot stretchable layer or non-stretchable particles, such as threads or pieces of thread, be introduced directly into the volume-compressible layer mentioned above.

Die Erfindung soll nachfolgend an einigen Ausführungsbeispielen näher erläutert werden. In den zugehörigen Zeichnungen zeigt:

Fig. 1:
teilweise einen Transferzylinder im Querschnitt,
Fig. 2:
einen Transferzylinder mit kegligem Mantel im Längsschnitt,
Fig. 3 bis 5:
in teilweiser Darstellung verschiedene Transferzylinderhülsen mit innerer kegliger Mantelfläche im Längsschnitt.
The invention will be explained in more detail below using a few exemplary embodiments. In the accompanying drawings:
Fig. 1:
partially a transfer cylinder in cross section,
Fig. 2:
a transfer cylinder with a conical jacket in longitudinal section,
3 to 5:
in partial representation different transfer cylinder sleeves with inner conical surface in longitudinal section.

In der beiliegenden teilweisen Darstellung gemäß Figur 1 sind der Transferzylinder mit 1 (Gummituchzylinder) und die an seiner Oberfläche vorgesehenen Öffnungen bzw. Düsen mit 1a bezeichnet. Die in der vorbeschriebenen Weise aufgebrachte Transferzylinderhülse 2 (Gummituchhülse) weist, wie vorangehend dargelegt wurde, eine vorzugsweise durch Luft aufweitbare Metallhülse 3 auf, auf der eine kompressible Schicht 4 aufvulkanisiert oder aufgeklebt ist. Auf der kompressiblen Schicht 4 ist eine Schicht aus einem nicht dehnbaren Material 5, vorzugsweise eine harte Elastomerschicht mit kurzen Fasern, die nicht näher bezeichnet sind, vorgesehen. Auf der nicht dehnbaren Schicht 5 ist eine Deckschicht 6 vorgesehen, beispielsweise aus einem elastischen Material, mit der im Offsetdruckverfahren gedruckt werden kann.In the accompanying partial illustration according to Figure 1 are the transfer cylinder with 1 (blanket cylinder) and the openings provided on its surface or nozzles with 1a. The one applied in the manner described above Transfer cylinder sleeve 2 (blanket sleeve) has, as explained above, a metal sleeve 3, preferably expandable by air, on which one compressible layer 4 is vulcanized or glued. On the compressible Layer 4 is a layer of a non-stretchable material 5, preferably one hard elastomer layer with short fibers, which are not specified, intended. A cover layer 6 is provided on the non-stretchable layer 5, For example, from an elastic material with the offset printing process can be printed.

Gemäß der Erfindung wird als Trägerhülse 3 vorzugsweise eine Metallhülse verwendet, beispielsweise aus Stahl, die durch Luft aufweitbar ist und die eine Stoßstelle 7 aufweist. Diese Stoßstelle 7 kann beispielsweise eine Schweißnaht sein, die in vorteilhafter Weise dadurch gebildet wird, daß die metallische Hülse aus einer Platte hergestellt ist, deren Enden zusammengeschweißt sind, so daß sich die Stoßstelle 7 ergibt.According to the invention, a metal sleeve is preferably used as the carrier sleeve 3 used, for example made of steel, which is expandable by air and the one Has joint 7. This joint 7 can for example be a weld be, which is advantageously formed in that the metallic sleeve a plate is made, the ends of which are welded together so that the Joint 7 results.

Unter Stoßstelle wir insbesondere verstanden, daß eine hülsen- bzw. zylinderförmige Gummi- oder Kunststoffschicht oder ein hülsen- bzw. zylinderförmiger metallischer Träger in Längs- also Achsrichtung nicht endlos, also nicht nahtfrei bzw. nicht kontinuierlich ist.Under joint we mean in particular that a sleeve or cylindrical Rubber or plastic layer or a sleeve or cylindrical metallic Beams are not endless in the longitudinal or axial direction, i.e. not seamless or not is continuous.

Desweiteren weist die kompressible Schicht 4 ebenfalls eine Stoßstelle 8 auf, die dadurch hergestellt sein kann, daß auf die Metallhülse 3 die kompressible Schicht 4 in Form eines Gummituchs aufgeklebt ist, so daß die Stoßstelle 8 durch die Enden der Gummischicht 4 gebildet sind.Furthermore, the compressible layer 4 also has a joint 8 which can be produced in that the compressible layer 4 on the metal sleeve 3 is glued in the form of a rubber blanket so that the joint 8 through the ends the rubber layer 4 are formed.

Ebenso kann, falls eine nicht dehnbare Schicht 5 auf der kompressiblen Schicht 4 verwendet wird, diese ebenfalls gemäß der Erfindung eine Stoßstelle 9 aufweisen, die in der vorbeschriebenen Weise gebildet sein kann.Likewise, if a non-stretchable layer 5 on the compressible layer 4 is used, these also have a joint 9 according to the invention, which can be formed in the manner described above.

Des weiteren wird gemäß der Erfindung auf einen derartigen Schichtaufbau, d.h. eine Trägerhülse 3 vorzugsweise aus Metall mit einer Stoßstelle 7 und mindestens einer aufgebrachten kompressiblen Schicht 4 mit einer Stoßstelle 8, eine Deckschicht 6 ohne Stoßstelle aufgebracht.Furthermore, according to the invention, such a layer structure, i.e. a carrier sleeve 3 preferably made of metal with a joint 7 and at least an applied compressible layer 4 with a joint 8, a Cover layer 6 applied without a joint.

Es ist auch möglich, daß die Deckschicht 6 - ebenso wie die kompressible Schicht 4 - Lufteinschlüsse aufweist, so daß auch die Deckschicht 6 eine gewisse Kompressibilität hat, was gegenüber dem Stand der Technik vorteilhaft ist und zu besseren Druckergebnissen bzw. Druckverhalten und besserer Bahnführung führen kann.It is also possible that the cover layer 6 - like the compressible layer 4 - Has air pockets, so that the cover layer 6 has a certain Compressibility has what is advantageous compared to the prior art and too lead to better printing results or printing behavior and better web guidance can.

Die erfindungsgemäße Hülse kann auch in der Weise besonders vorteilhaft hergestellt werden, daß eine geschweißte Metallhülse 3 aus Stahl oder Aluminium oder beispielsweise eine CFK-Hülse mit einer Stoßstelle verwendet wird, auf der ein herkömmliches Offset-Gummituch, z. B. mit einer kompressiblen Schicht, aufgebracht, beispielsweise aufgeklebt wird. Danach wird die Deckschicht des herkömmlichen Gummituches abgetragen, beispielsweise abgeschliffen und an deren Stelle eine kontinuierliche, d.h. eine stoßfreie Deckschicht 6 aufgebracht, beispielsweise aufvulkanisiert. Gegenüber den bekannten Hülsen ist eine derartige Herstellung und ein derartiger Hülsenaufbau wesentlich preisgünstiger und weist eine Anzahl von Vorteilen auf. In diesem Fall liegen die Stoßstellen 8, 9 übereinander, da sie die Enden des herkömmlichen Gummituches, das auf die Trägerhülse 3 aufgeklebt wurde, darstellen.The sleeve according to the invention can also be particularly advantageous in this way be made that a welded metal sleeve 3 made of steel or aluminum or, for example, a CFRP sleeve is used with a joint on which a conventional offset rubber blanket, e.g. B. with a compressible layer, applied, for example glued. After that the top layer of the conventional rubber blanket is removed, for example sanded and in their place a continuous, i.e. a bumpless Cover layer 6 applied, for example vulcanized. Compared to the known sleeves is such a production and such a sleeve structure much cheaper and has a number of advantages. In this case are the joints 8, 9 one above the other, since they are the ends of the conventional Rubber blanket, which was glued to the carrier sleeve 3, represent.

Die Stoßstellen 8, 9 können in vorteilhafter Weise - müssen aber nicht zwingend - direkt über der Stoßstelle 7 angeordnet sein.The butt joints 8, 9 can advantageously - but not necessarily - be arranged directly above the joint 7.

Bei der Aufbringung von endlichen einzelnen Schichten, d.h. einer zumindest kompressiblen Schicht 4 und einer Deckschicht 6 sowie gegebenenfalls einer weiteren nicht dehnbaren Schicht, die im Ausführungsbeispiel mit 5 bezeichnet ist, können die einzelnen Stoßstellen 7, 8, 9 auch umfangsmäßig gesehen an anderen Stellen liegen, d.h. sie müssen nicht, wie dargestellt, übereinander liegen.When applying finite individual layers, i.e. at least one compressible layer 4 and a cover layer 6 and optionally one another inextensible layer, which is denoted by 5 in the exemplary embodiment, the individual joints 7, 8, 9 can also be seen circumferentially at others Digits, i.e. they do not have to be on top of one another, as shown.

In der Schicht 5 ist beispielsweise die vorteilhafte Anordnung von kurzen, nicht dehnbaren Stücken, wie Fäden, gezeigt.In layer 5, for example, the advantageous arrangement of short is not stretchable pieces, such as threads.

Die erfindungsgemäße Hülse bietet eine Vielzahl von Einsatzmöglichkeiten, die nicht nur auf die Anwendung von Offset-Rollenrotationsdruckmaschinen beschränkt sind. So kann diese Hülse auch beispielsweise bei anderen indirekten Druckverfahren, wie indirektem Tiefdruck, eingesetzt werden oder als Walze eingesetzt werden.The sleeve according to the invention offers a variety of uses, which are not are only limited to the use of offset web-fed rotary presses. For example, this sleeve can also be used for other indirect printing processes, such as indirect gravure, are used or used as a roller.

Ein besonderer Vorteil liegt darin, daß eine Umfangsregisterung, also ein Aufbringen der Hülse auf den Zylinder in einer vorgegebenen Umfangsposition nicht erforderlich ist und daß dennoch alle wesentlichen Vorteile bei der Herstellung erreichbar sind, die typisch für endliche Übertragungsträger (Gummitücher bzw. -Hülsen) sind. A particular advantage is that a circumferential registration, that is, an application the sleeve on the cylinder in a predetermined circumferential position is not required and that nevertheless all essential advantages can be achieved in the production, which are typical for finite transfer media (rubber blankets or sleeves).

Es ist auch möglich, die Schicht 3 aus faserverstärktem Hartgummi herzustellen - mit oder ohne Naht - der z. B. durch Druckluft dehnbar ist, und hierüber kann eine kompressible Schicht, dann eine semikompressible Schicht, die faserverstärkt sein kann, und dann eine druckende Deckschicht angeordnet sein, was sehr vorteilhaft ist.It is also possible to produce layer 3 from fiber-reinforced hard rubber - with or without seam - the z. B. is expandable by compressed air, and this can be a compressible layer, then a semi-compressible layer, which will be fiber reinforced can, and then a printing top layer can be arranged, which is very advantageous is.

Nachfolgend sollen einige Trägerhülsen mit innerer kegliger Mantelfläche beschrieben werden. Der Einfachheit halber werden weitgehend die Bezugszeichen des vorherigen Ausführungsbeispiels verwendet, ggf. unter Anfügung eines Unterscheidungsmerkmals .1, 2 .... Fig. 2 zeigt eine Trägerhülse 3.1 mit zugehörigem Transferzylinder 1.1 mit entsprechend kegliger Mantelfläche. Etwa in der Mitte des Transferzylinders 1.1 und/oder mindestens in einem Endbereich seiner Mantelfläche sind radiale Bohrungen 1a angeordnet, die ihnen über eine Leitung zugeführte Druckluft gegen die Innenfläche der Trägerhülse 3.1 leiten und diese zur Erleichterung ihres Wechsels aufweiten. Aufgrund der Kegligkeit des Transferzylinders 1.1 und der Trägerhülse 3.1 ist zu Beginn des Aufschiebevorgangs von Haus aus zwischen diesen Teilen ein Spalt vorhanden, dank dem sich Aufschiebeschrägen erübrigen. Auch wird in diesem Spalt die Druckluft günstig verteilt.Below are some carrier sleeves with an inner conical surface to be discribed. For the sake of simplicity, the reference symbols are largely used of the previous embodiment used, possibly with the addition of a Distinguishing feature .1, 2 .... Fig. 2 shows a carrier sleeve 3.1 with Associated transfer cylinder 1.1 with a correspondingly tapered outer surface. About in the center of the transfer cylinder 1.1 and / or at least in one end region of it Radial bores 1a are arranged on the lateral surface, which are connected to them via a line supply compressed air against the inner surface of the carrier sleeve 3.1 and this to Widen your transition easier. Due to the conical nature of the Transfer cylinder 1.1 and the carrier sleeve 3.1 is at the beginning of the slide-on process naturally there is a gap between these parts, thanks to which There is no need for slip-on slopes. The compressed air is also favorable in this gap distributed.

Die Trägerhülse 3.1 ist in Fig. 3 teilweise im Längsschnitt dargestellt. Sie besteht aus einem Metall, vorteilhaft Nickel. Ihre Außenfläche ist zylindrisch, entsprechend nimmt ihre Wanddicke zum Ende mit dem kleineren Innendurchmesser hin zu. Die Trägerhülse 3.1 kann beispielsweise galvanisch erstellt und anschließend geschliffen werden.The carrier sleeve 3.1 is partially shown in longitudinal section in FIG. 3. it consists of a metal, advantageously nickel. Its outer surface is cylindrical, taking accordingly their wall thickness towards the end with the smaller inside diameter. The Carrier sleeve 3.1 can be created, for example, by electroplating and then ground become.

Die Trägerhülse 3.2 gemäß Fig. 4 enthält einen inneren Träger 11 aus Metall, vorteilhaft Nickel, mit einer inneren und äußeren kegligen Mantelfläche. Der Träger 11 kann aus einem Blech geformt werden, wobei die aufeinander zu gebogenen Kanten einen Stoß bilden. Der Stoß kann auch verschweißt werden, beispielsweise mittels Laserstrahl. Auf dem Träger 11 ist eine feste Kunststoffschicht 12 mit einer zylindrischen äußeren Mantelfläche angeordnet. Vorteilhaft wird Hartgummi aufvulkanisiert oder aufgeklebt und anschließend geschliffen. Die Kunststoffschicht 12 kann mit Stoß oder stoßfrei ausgeführt sein.4 contains an inner carrier 11 made of metal, advantageously nickel, with an inner and outer conical surface. The carrier 11 can be formed from a sheet metal, with the bent towards each other Form a joint. The joint can also be welded, for example using a laser beam. On the carrier 11 is a solid plastic layer 12 with a cylindrical outer surface arranged. Hard rubber is advantageous vulcanized or glued on and then sanded. The plastic layer 12 can be carried out with or without impact.

Die in Fig. 5 teilweise dargestellte Trägerhülse 3.3 besteht aus glasfaserverstärktem Kunststoff (GFK). Auf einer mehrlagigen, vorteilhaft gewickelten Glasfaserschicht 13 mit kegliger inneren und äußeren Mantelfläche befindet sich eine Epoxidharzschicht 14 mit einer zylindrischen Außenfläche.The carrier sleeve 3.3 partially shown in FIG. 5 consists of glass fiber reinforced Plastic (GRP). On a multilayer, advantageously wound glass fiber layer 13 with a tapered inner and outer surface there is an epoxy resin layer 14 with a cylindrical outer surface.

Die gezeigten Trägerhülsen 3.1 bis 3.3 tragen, nicht dargestellt, eine der vorangehend beschriebenen Beschichtungen.The carrier sleeves shown 3.1 to 3.3 carry, not shown, one of the coatings described above.

Claims (22)

  1. A rubber cylinder sleeve (2), in particular for offset printing machines, having an inner carrier sleeve (3) which can be expanded by air, a compressible layer (4) arranged on top of it, and an outer covering layer (6), characterised in that the carrier sleeve (3) is provided with a junction point (7), and the compressible layer (4) arranged on top of it is provided with a junction point (8), and the outer covering layer (6) is designed continuously without a junction point.
  2. A sleeve according to claim 1, characterised in that between the compressible layer (4) and the covering layer (6), or in the compressible layer (4), there are provided a further non-expandable layer (5) or non-expandable fabric or threads, or portions of fabric or thread, which have a junction point (9).
  3. A sleeve according to claim 1 or 2, characterised in that the compressible layer (4) has air pockets.
  4. A sleeve according to one of the preceding claims, characterised in that the covering layer (6) is compressible and has air pockets.
  5. A sleeve according to claim 4, characterised in that the covering layer (6) is less compressible than the compressible layer (4).
  6. A sleeve according to one of the preceding claims, characterised in that glued on the inner metallic carrier sleeve (3) is an offset rubber blanket whose . outer layer has a junction point applied to it.
  7. A sleeve according to claim 6, characterised in that instead of the removed outer layer with junction point a continuous junction point-free outer covering layer (6) is provided.
  8. A sleeve according to claim 7, characterised in that the outer covering layer (6) is vulcanised onto a layer (5 or 4) lying beneath it which has junction points (9 or 8).
  9. A sleeve according to one of the preceding claims, characterised in that the junction point of the metallic carrier sleeve (3) has a welded seam (7), [and] in that the junction points (8, 9) of the layers (4, 5) lying above it are formed by abutting ends of the glued or vulcanised layers (4, 5).
  10. A sleeve according to claim 9, characterised in that the junction points (8, 9) are glued points.
  11. A rubber cylinder sleeve according to one of the preceding claims, characterised in that arranged on the expandable inner carrier sleeve (3) is an outer layer with air pockets or with downwardly open air channels.
  12. A sleeve according to claim 11, characterised in that non-expandable materials are arranged in the outer layer.
  13. A sleeve according to claim 12, characterised in that the non-expandable materials are threads or thread portions.
  14. A rubber cylinder sleeve according to one or more of the preceding claims, characterised in that the inner carrier sleeve (3) is a fibre-reinforced hard rubber layer.
  15. A rubber cylinder sleeve according to one of the preceding claims, characterised in that the carrier sleeve (3.1, 3.2, 3.3) has a conical inner casing surface.
  16. A sleeve according to claim 15, characterised in that the outer surface of the carrier sleeve (3.1, 3.2, 3.3) is cylindrical.
  17. A sleeve according to claim 15 or 16, characterised in that the carrier sleeve (3.1) is made of a metal, in particular nickel.
  18. A sleeve according to claim 16, characterised in that the carrier sleeve (3.3) is made of a glass fibre-reinforced plastic, wherein an epoxy resin layer (14) with a cylindrical outer surface is arranged on a multi-layer glass fibre layer (13), in particular one that is wound.
  19. A sleeve according to claim 16, characterised in that the carrier sleeve (3.2) contains an inner carrier (11) of metal, in particular nickel, which has a conical outer casing surface on which is arranged a solid plastic layer (12), in particular hard rubber, with a cylindrical outer casing surface.
  20. A sleeve according to claim 19, characterised in that the plastics layer (12) is provided with a junction point.
  21. A sleeve according to claim 19 or 20, characterised in that the carrier (11) is made of butted sheet metal, and the butt-joint is optionally welded.
  22. A sleeve according to one of claims 15 to 21 for use on a transfer cylinder with a conical casing surface, characterised in that in the middle region and/or at least in one end region of the casing surface the transfer cylinder (1.1) has radial bores (1a) for compressed air.
EP97106952A 1996-07-16 1997-04-26 Rubber sleeve for rotary offset printing presses Expired - Lifetime EP0819550B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19628555 1996-07-16
DE19628555 1996-07-16

Publications (3)

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EP0819550A2 EP0819550A2 (en) 1998-01-21
EP0819550A3 EP0819550A3 (en) 1998-01-28
EP0819550B1 true EP0819550B1 (en) 2002-02-27

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ID=7799907

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EP97106952A Expired - Lifetime EP0819550B1 (en) 1996-07-16 1997-04-26 Rubber sleeve for rotary offset printing presses

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Country Link
US (1) US6148725A (en)
EP (1) EP0819550B1 (en)
JP (2) JP3048538B2 (en)
CA (1) CA2209834C (en)
DE (1) DE59706477D1 (en)

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US7559278B2 (en) 2004-11-13 2009-07-14 Man Roland Druckmaschinen Ag Apparatus and method for a printing-press cylinder sleeve

Also Published As

Publication number Publication date
CA2209834A1 (en) 1998-01-16
EP0819550A3 (en) 1998-01-28
JP3048538B2 (en) 2000-06-05
EP0819550A2 (en) 1998-01-21
JPH1058853A (en) 1998-03-03
US6148725A (en) 2000-11-21
DE59706477D1 (en) 2002-04-04
JP2000141941A (en) 2000-05-23
CA2209834C (en) 2004-02-24

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