EP0010122B1 - Device for tensioning the blanket on the transfer cylinder of a rotary printing machine - Google Patents

Device for tensioning the blanket on the transfer cylinder of a rotary printing machine Download PDF

Info

Publication number
EP0010122B1
EP0010122B1 EP79102339A EP79102339A EP0010122B1 EP 0010122 B1 EP0010122 B1 EP 0010122B1 EP 79102339 A EP79102339 A EP 79102339A EP 79102339 A EP79102339 A EP 79102339A EP 0010122 B1 EP0010122 B1 EP 0010122B1
Authority
EP
European Patent Office
Prior art keywords
blanket
cylinder
pulling
tight
clamping
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
Application number
EP79102339A
Other languages
German (de)
French (fr)
Other versions
EP0010122A3 (en
EP0010122A2 (en
Inventor
Willi Jeschke
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6050573&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0010122(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to AT79102339T priority Critical patent/ATE477T1/en
Publication of EP0010122A2 publication Critical patent/EP0010122A2/en
Publication of EP0010122A3 publication Critical patent/EP0010122A3/en
Application granted granted Critical
Publication of EP0010122B1 publication Critical patent/EP0010122B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders

Definitions

  • the invention relates to a device for tensioning the blanket on the blanket cylinder of rotary printing presses, the outer surface of which has a slot running parallel to the cylinder axis, which widens inwards and accommodates two rotatable tensioning spindles for tensioning the blanket, each provided with a longitudinal groove for inserting the blanket ends are, the two ends of the blanket have reinforcements.
  • the rubber blanket ends are provided with reinforcements which protrude beyond the rubber blanket on both sides.
  • the protruding ends of the reinforcements are held on both sides by bushes after insertion into the slots of the clamping spindle. Only then can the tensioning spindles be turned to tension the blanket ends.
  • the above reinforcements have the disadvantage that they can interfere with the handling of the rubber blankets outside of the machine, that they are exposed to excessive stresses when the rubber blanket ends are tensioned, so that the armatures bend and there is also the risk that the bushings hold the Reinforcements jam, so that changing the rubber blankets is difficult.
  • Another known device for tensioning the rubber blanket does not use reinforcements on the rubber blanket ends and therefore requires tilting strips in the tensioning spindles, which are held in place by springs.
  • the known design has the further disadvantage that the rubber blanket ends can be inserted very difficult into the narrow slots between the tilt bar and tension spindle. If the ends are inserted unevenly, a different tension is generated over the length of the rubber blanket, which has a negative effect on the printed image.
  • inserting the rubber blanket ends through the narrow slot in the cylinder jacket is very time-consuming and thus hinders the quick replacement of a rubber blanket.
  • the object of the invention is to provide a device for tensioning the rubber blanket which, using simple means, enables a uniform and secure tensioning of both rubber blanket ends and a simple and quick change of the rubber blanket.
  • a support spindle is arranged in parallel and at such a small distance from the clamping spindles that the latter during the clamping process the parts of the reinforcements adjacent Angled rubber blanket, thereby fully pressing the reinforcements into the longitudinal groove and then preventing them from sliding out.
  • the support spindle arranged above the tensioning spindles is uncomplicated and enables both rubber blanket ends to be inserted quickly and easily.
  • the support spindle also ensures a secure and even tensioning of the rubber blanket, because the two ends cannot slip out of the slots of the tensioning spindles due to the angling and are guided along their entire length.
  • the support spindle can z. B. have a circular cross-section, the cross-section can be designed as a triangle with rounded corners and it could also have the shape of an angle with an outwardly pointing angle tip and rounded leg ends. After the two ends of the rubber blanket are supported on the support spindle in the tensioned state, a relatively small cross section can be selected for this.
  • the support spindle has a circular cross-section with a smaller diameter than the clamping spindles and is freely rotatably mounted in bearings on both ends of the cylinder in bridges.
  • the support spindle can rotate when the blanket ends are tensioned and enables the blanket to be changed quickly and easily. It can also be made relatively thin because it is supported on both sides by the stretched blanket ends.
  • the support spindle is arranged symmetrically to the clamping spindles and has a larger diameter than the space between the clamping spindles. This achieves an optimal tension of the two blanket ends.
  • a rubber blanket 2 is stretched onto the rubber cylinder 1 in a known manner Ends 3, 4 are inserted through a slot 5 in the outer surface of the blanket cylinder.
  • the slot 5 widens inwards and accommodates two clamping spindles 6, 7.
  • Each tensioning spindle 6, 7 is provided with a longitudinal groove 8 into which the rubber blanket ends are inserted.
  • the ends 3, 4 of the rubber blanket 2 are provided with reinforcements 9.
  • a support spindle 10 is provided in the expanded space between the outer surface of the blanket cylinder 1 and the two clamping spindles 6, 7 in parallel and at a short distance from both, which can rotate freely in bearings 11 on both Cylinder end faces is stored.
  • the support spindle 10 is arranged symmetrically to the clamping spindles and has a smaller diameter than these. However, the diameter is larger than the distance between the clamping spindles.
  • Fig. 1 the end 4 of the blanket 2 is already inserted into the longitudinal groove 8 of the clamping spindle 7 and this is rotated somewhat counterclockwise, so that the protruding end 4 is supported on the clamping spindle 10 and angled. As a result, the reinforcement 9 is pressed into the longitudinal groove 8 and cannot slide out.
  • the other end 3 of the rubber blanket 2 is inserted into the groove 8 of the clamping spindle 6, which is in the starting position for inserting the rubber blanket end.
  • FIG. 2 shows the tensioned state of the rubber blanket 2 again, in which both clamping spindles 6 and 7 are rotated with the two ends 3, 4 of the rubber blanket 2 so far that the rubber blanket 2 is firmly clamped on the outer surface of the rubber cylinder 1 is.
  • the support spindle 10 can rotate when tensioning the rubber blanket and prevents the ends 3, 4 of the rubber blanket from slipping out, so that these are securely stretched over their entire length. Due to the small diameter of the support spindle 10, the two blanket ends can be easily inserted. In the tensioned state of the rubber blanket 2, the two rubber blanket ends rest against the support spindle 10 on both sides, so that the latter cannot bend.
  • Fig. 3 it is shown that the support spindle 10 is rotatably mounted with its pin 12 in the bearing 11.
  • the clamping spindles 6 are also rotatably mounted with their pins 13, 14, the mounting being carried out in a bridge 18 fastened to the plate cylinder 1.
  • the clamping spindle 7 can be rotated via a worm 15 and a worm wheel 16.
  • the worm and the worm wheel are arranged on the opposite side of the cylinder, not shown.
  • FIG. 4 differs from FIGS. 1 and 2 in that instead of a support spindle 10 with a circular cross section, a support spindle 10 'with an approximately triangular cross section was chosen.
  • the support spindle 10 ' is not rotatably mounted in the bridges 18 and also enables a uniform and secure tensioning and a simple change of the rubber blanket.
  • FIG. 5 shows instead of a support spindle 10 on the inside of the bridge 18 in the area of the rubber blanket 2 arranged support bolts 19 which are rotatably or rigidly mounted in the bridges 18. This enables a safe and uniform tensioning of the rubber blanket 2 to be achieved, particularly in the case of narrow machines.
  • the support spindle 17 is conical with the smaller diameter on the side of the worm wheels 16, both of which are provided on the same side in the exemplary embodiment shown.
  • an angular rotation of the tensioning spindles 6, 7 can be compensated for with a conical support spindle, so that a uniform tension is achieved over the entire width of the rubber blanket.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)

Abstract

Device for clamping a blanket on the blanket cylinder of rotary printing machines having an outer cylindrical surface formed with a slot extending parallel to the axis of the cylinder and widening radially inwardly, the slot accommodating at the radially inwardly widened region thereof two rotatable clamping spindles for clamping the blanket, each of the clamping spindles being formed with a longitudinal groove for receiving respective ends of the blanket therein, the respective ends of the blanket having sheathing thereon, including at least one support rod disposed in the widened region of the slot between the outer cylindrical surface of the cylinder and the two clamping spindles, the support rod extending parallel to and being slightly spaced from the clamping spindles, the support rod, during clamping of the blanket, being in engagement with a part of the blanket adjacent the sheathing and forming an angle in the blanket part so as to force the sheathing fully into the respective longitudinal groove and prevent it from slipping out of the groove.

Description

Die Erfindung betrifft eine Vorrichtung zum Spannen des Gummituches auf dem Gummizylinder von Rotationsdruckmaschinen, dessen Mantelfläche einen parallel zur Zylinderachse verlaufenden Schlitz aufweist, welcher sich nach innen erweitert und zwei drehbare Spannspindeln zum Spannen des Gummituches aufnimmt, die mit je einer Längsnut zum Einführen der Gummituchenden versehen sind, wobei die beiden Enden des Gummituches Armierungen aufweisen.The invention relates to a device for tensioning the blanket on the blanket cylinder of rotary printing presses, the outer surface of which has a slot running parallel to the cylinder axis, which widens inwards and accommodates two rotatable tensioning spindles for tensioning the blanket, each provided with a longitudinal groove for inserting the blanket ends are, the two ends of the blanket have reinforcements.

Bei einer bekannten Ausführung dieser Art (DE-AS 1 124051) sind die Gummituchenden mit Armierungen versehen, die beiderseits das Gummituch überragen. Die überstehenden Enden der Armierungen werden nach Einführung in die Schlitze der Spannspindel beiderseits von Büchsen gehalten. Erst danach kann das Verdrehen der Spannspindeln zum Spannen der Gummituchenden erfolgen. Die vorstehenden Armierungen haben den Nachteil, daß sie bei der Handhabung der Gummitücher außerhalb der Maschine stören können, daß sie beim Spannen der Gummituchenden zu hohen Belastungen ausgesetzt sind, so daß sich die Armierungen verbiegen und außerdem besteht die Gefahr, daß die Büchsen zum Festhalten der Armierungen sich verklemmen, so daß das Wechseln der Gummitücher erschwert wird.In a known embodiment of this type (DE-AS 1 124051), the rubber blanket ends are provided with reinforcements which protrude beyond the rubber blanket on both sides. The protruding ends of the reinforcements are held on both sides by bushes after insertion into the slots of the clamping spindle. Only then can the tensioning spindles be turned to tension the blanket ends. The above reinforcements have the disadvantage that they can interfere with the handling of the rubber blankets outside of the machine, that they are exposed to excessive stresses when the rubber blanket ends are tensioned, so that the armatures bend and there is also the risk that the bushings hold the Reinforcements jam, so that changing the rubber blankets is difficult.

Eine andere bekannte Vorrichtung zum Spannen des Gummituches (DE-PS 1 239 706) verwendet keine Armierungen an den Gummituchenden und benötigt dafür Kippleisten in den Spannspindeln, die über Federn festgehalten werden. Neben der Gefahr, daß die Kippleisten beim Wechseln des Gummituches aus den Spannspindeln herausgleiten und diese verklemmen, weist die bekannte Ausführung den weiteren Nachteil auf, daß die Gummituchenden nur sehr schwer in die schmalen Schlitze zwischen Kippleiste und Spannspindel gleichmäßig eingeführt werden können. Bei einem ungleichmäßigen Einführen der Enden wird über die Länge des Gummituches eine unterschiedliche Spannung erzeugt, die sich im Druckbild negativ bemerkbar macht. Außerdem ist das Einführen der Gummituchenden durch den schmalen Schlitz im Zylindermantel sehr zeitaufwendig und behindert somit das schnelle Wechseln eines Gummituches.Another known device for tensioning the rubber blanket (DE-PS 1 239 706) does not use reinforcements on the rubber blanket ends and therefore requires tilting strips in the tensioning spindles, which are held in place by springs. In addition to the risk that the tilt bars slide out of the tension spindles when changing the rubber blanket and jam them, the known design has the further disadvantage that the rubber blanket ends can be inserted very difficult into the narrow slots between the tilt bar and tension spindle. If the ends are inserted unevenly, a different tension is generated over the length of the rubber blanket, which has a negative effect on the printed image. In addition, inserting the rubber blanket ends through the narrow slot in the cylinder jacket is very time-consuming and thus hinders the quick replacement of a rubber blanket.

Aufgabe der Erfindung ist es, eine Vorrichtung zum Spannen des Gummituches zu schaffen, die unter Verwendung von einfachen Mitteln eine gleichmäßige und sichere Spannung beider Gummituchenden sowie ein einfaches und schnelles Wechseln des Gummituches ermöglicht.The object of the invention is to provide a device for tensioning the rubber blanket which, using simple means, enables a uniform and secure tensioning of both rubber blanket ends and a simple and quick change of the rubber blanket.

Die Aufgabe wird gemäß der Erfindung dadurch gelöst, daß im erweiterten Raum des Schlitzes zwischen der Mantelfläche des Gurnmizylinders und den beiden Spannspindeln parallel und in einem solchen geringen Abstand zu den Spannspindeln eine Stützspindel angeordnet ist, daß letztere beim Spannvorgang die an die Armierungen angrenzenden Teile des Gummituches abwinkelt und dadurch die Armierungen in die Längsnut zunächst voll eindrückt und sodann am Herausgleiten hindert.The object is achieved according to the invention in that in the expanded space of the slot between the lateral surface of the rubber cylinder and the two clamping spindles, a support spindle is arranged in parallel and at such a small distance from the clamping spindles that the latter during the clamping process the parts of the reinforcements adjacent Angled rubber blanket, thereby fully pressing the reinforcements into the longitudinal groove and then preventing them from sliding out.

Die über den Spannspindeln angeordnete Stützspindel ist unkompliziert und ermöglicht ein einfaches und schnelles Einführen beider Gummituchenden. Die Stützspindel gewährleistet auch eine sichere und gleichmäßige Spannung des Gummituches, denn die beiden Enden können durch das Abwinkeln nicht aus den Schlitzen der Spannspindeln herausrutschen und sind auf ihrer ganzen Länge geführt. Die Stützspindel kann hierbei z. B. einen kreisförmigen Querschnitt aufweisen, der Querschnitt kann als Dreieck mit abgerundeten Ecken ausgebildet sein und er könnte auch die Form eines Winkels aufweisen mit nach außen zeigender Winkelspitze und abgerundeten Schenkelenden. Nachdem sich die beiden Enden des Gummituches im gespannten Zustand an der Stützspindel abstützen, kann für diese ein relativ geringer Querschnitt gewählt werden.The support spindle arranged above the tensioning spindles is uncomplicated and enables both rubber blanket ends to be inserted quickly and easily. The support spindle also ensures a secure and even tensioning of the rubber blanket, because the two ends cannot slip out of the slots of the tensioning spindles due to the angling and are guided along their entire length. The support spindle can z. B. have a circular cross-section, the cross-section can be designed as a triangle with rounded corners and it could also have the shape of an angle with an outwardly pointing angle tip and rounded leg ends. After the two ends of the rubber blanket are supported on the support spindle in the tensioned state, a relatively small cross section can be selected for this.

In einer vorteilhaften Ausgestaltung weist die Stützspindel einen kreisförmigen Querschnitt auf mit geringerem Durchmesser als die Spannspindeln und ist frei drehbar in Lagerungen auf beiden Zylinderstirnseiten in Brücken gelagert. Somit kann sich die Stützspindel beim Spannen der Gummituchenden drehen und ermöglicht ein einfaches und schnelles Wechseln des Gummituches. Auch kann sie relativ dünn ausgebildet sein, denn sie wird beiderseits von den gespannten Gummituchenden gestützt.In an advantageous embodiment, the support spindle has a circular cross-section with a smaller diameter than the clamping spindles and is freely rotatably mounted in bearings on both ends of the cylinder in bridges. Thus, the support spindle can rotate when the blanket ends are tensioned and enables the blanket to be changed quickly and easily. It can also be made relatively thin because it is supported on both sides by the stretched blanket ends.

In einer weiteren Ausgestaltung der Erfindung ist die Stützspindel symmetrisch zu den Spannspindeln angeordnet und weist einen größeren Durchmesser als der Zwischenraum zwischen den Spannspindeln auf. Hiermit wird eine optimale Spannung der beiden Gummituchenden erreicht.In a further embodiment of the invention, the support spindle is arranged symmetrically to the clamping spindles and has a larger diameter than the space between the clamping spindles. This achieves an optimal tension of the two blanket ends.

Weitere Ausgestaltungen der Erfindung sind durch die Merkmale der Ansprüche 4 bis 6 gekennzeichnet.Further refinements of the invention are characterized by the features of claims 4 to 6.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen schematisch dargestellt. Es zeigt

  • Fig. 1 einen Teilquerschnitt durch die Spannvorrichtung mit eingelegten Gummituchenden,
  • Fig. einen Teilquerschnitt durch die Spannvorrichtung mit gespanntem Gummituch,
  • Fig. 3 einen Längsschnitt durch die Lagerung der Spannspindeln und der frei drehbaren Stützspindeln,
  • Fig. 4 einen Teilquerschnitt durch die Spannvorrichtung mit einer dreieckigen Stützspindel,
  • Fig. 5 und 6 Längsschnitte durch die Spannvorrichtung.
An embodiment of the invention is shown schematically in the drawings. It shows
  • 1 shows a partial cross section through the tensioning device with inserted rubber blanket ends,
  • 1 shows a partial cross section through the tensioning device with a tensioned rubber blanket,
  • 3 shows a longitudinal section through the mounting of the clamping spindles and the freely rotatable support spindles,
  • 4 shows a partial cross section through the clamping device with a triangular support spindle,
  • 5 and 6 longitudinal sections through the clamping device.

Auf den Gummizylinder 1 wird in bekannter Weise ein Gummituch 2 aufgespannt, dessen Enden 3, 4 durch einen Schlitz 5 in der Mantelfläche des Gummizylinders eingeführt werden. Der Schlitz 5 erweitert sich nach innen und nimmt zwei Spannspindeln 6, 7 auf. Jede Spannspindel 6, 7 ist mit einer Längsnut 8 versehen, in die die Gummituchenden eingeführt werden. Im gezeigten Ausführungsbeispiel sind die Enden 3, 4 des Gummituches 2 mit Armierungen 9 versehen. Durch Verdrehen der Spinnspindeln 6, 7 kann jedes Ende 3, 4 des Gummituches 2 für sich separat gespannt werden.A rubber blanket 2 is stretched onto the rubber cylinder 1 in a known manner Ends 3, 4 are inserted through a slot 5 in the outer surface of the blanket cylinder. The slot 5 widens inwards and accommodates two clamping spindles 6, 7. Each tensioning spindle 6, 7 is provided with a longitudinal groove 8 into which the rubber blanket ends are inserted. In the exemplary embodiment shown, the ends 3, 4 of the rubber blanket 2 are provided with reinforcements 9. By rotating the spindles 6, 7, each end 3, 4 of the rubber blanket 2 can be tensioned separately.

Wie im gezeigten Ausführungsbeispiel (Fig. 1 und 2) ersichtlich, ist im erweiterten Raum zwischen der Mantelfläche des Gummizylinders 1 und den beiden Spannspindeln 6, 7 parallel und mit geringem Abstand zu beiden eine Stützspindel 10 vorgesehen, die frei drehbar in Lagerungen 11 auf beiden Zylinderstirnseiten gelagert ist. Die Stützspindel 10 ist symmetrisch zu den Spannspindeln angeordnet und weist einen geringeren Durchmesser als diese auf. Der Durchmesser ist jedoch größer als der Abstand zwischen den Spannspindeln.As can be seen in the exemplary embodiment shown (FIGS. 1 and 2), a support spindle 10 is provided in the expanded space between the outer surface of the blanket cylinder 1 and the two clamping spindles 6, 7 in parallel and at a short distance from both, which can rotate freely in bearings 11 on both Cylinder end faces is stored. The support spindle 10 is arranged symmetrically to the clamping spindles and has a smaller diameter than these. However, the diameter is larger than the distance between the clamping spindles.

In Fig. 1 ist das Ende 4 des Gummituches 2 bereits in die Längsnut 8 der Spannspindel 7 eingelegt und diese ist etwas entgegen dem Uhrzeigersinn verdreht, so daß sich das überstehende Ende 4 an der Spannspindel 10 abstützt und abgewinkelt wird. Hierdurch wird die Armierung 9 in die Längsnut 8 eingedrückt und kann nicht herausgleiten. Das andere Ende 3 des Gummituches 2 ist in die Nut 8 der Spannspindel 6 eingeführt, wobei diese sich in der Ausgangsstellung zum Einführen des Gummituchendes befindet.In Fig. 1, the end 4 of the blanket 2 is already inserted into the longitudinal groove 8 of the clamping spindle 7 and this is rotated somewhat counterclockwise, so that the protruding end 4 is supported on the clamping spindle 10 and angled. As a result, the reinforcement 9 is pressed into the longitudinal groove 8 and cannot slide out. The other end 3 of the rubber blanket 2 is inserted into the groove 8 of the clamping spindle 6, which is in the starting position for inserting the rubber blanket end.

Das in Fig. 2 gezeigte Ausführungsbeispiel gibt den gespannten Zustand des Gummituches 2 wieder, bei dem beide Spannspindeln 6 und 7 mit den beiden Enden 3,4 des Gummituches 2 so weit verdreht sind, daß das Gummituch 2 auf der Mantelfläche des Gummizylinders 1 fest aufgespannt ist. Die Stützspindel 10 kann sich beim Spannen des Gummituches drehen und verhindert ein Herausrutschen der Enden 3, 4 des Gummituches, so daß diese sicher auf ihrer ganzen Länge gespannt sind. Durch den geringen Durchmesser der Stützspindel 10 lassen sich die beiden Gummituchenden leicht einführen. Im gespannten Zustand des Gummituches 2 liegen die beiden Gummituchenden beiderseits an der Stützspindel 10 an, so daß sich diese nicht verbiegen kann.The embodiment shown in Fig. 2 shows the tensioned state of the rubber blanket 2 again, in which both clamping spindles 6 and 7 are rotated with the two ends 3, 4 of the rubber blanket 2 so far that the rubber blanket 2 is firmly clamped on the outer surface of the rubber cylinder 1 is. The support spindle 10 can rotate when tensioning the rubber blanket and prevents the ends 3, 4 of the rubber blanket from slipping out, so that these are securely stretched over their entire length. Due to the small diameter of the support spindle 10, the two blanket ends can be easily inserted. In the tensioned state of the rubber blanket 2, the two rubber blanket ends rest against the support spindle 10 on both sides, so that the latter cannot bend.

In Fig. 3 ist dargestellt, daß die Stützspindel 10 mit ihrem Zapfen 12 in der Lagerung 11 drehbar gelagert ist. Auch die Spannspindeln 6, sind mit ihren Zapfen 13, 14 drehbar gelagert, wobei die Lagerung in einer am Plattenzylinder 1 befestigten Brücke 18 erfolgt. Die Spannspindel 7 ist über eine Schnecke 15 und ein Schneckenrad 16 verdrehbar. Bei der Spannspindel 6 sind die Schnecke und das Schneckenrad auf der gegenüberliegenden nicht dargestellten Zylinderseite angeordnet.In Fig. 3 it is shown that the support spindle 10 is rotatably mounted with its pin 12 in the bearing 11. The clamping spindles 6 are also rotatably mounted with their pins 13, 14, the mounting being carried out in a bridge 18 fastened to the plate cylinder 1. The clamping spindle 7 can be rotated via a worm 15 and a worm wheel 16. In the clamping spindle 6, the worm and the worm wheel are arranged on the opposite side of the cylinder, not shown.

Die Ausführung gemäß Fig.4 unterscheidet sich von Fig. 1 und 2 dadurch, daß anstelle einer Stützspindel 10 mit kreisförmigem Querschnitt eine Stützspindel 10' mit einem etwa dreieckigen Querschnitt gewählt wurde. Die Stützspindel 10' ist nicht drehbar in den Brücken 18 gelagert und ermöglicht ebenfalls ein gleichmäßiges und sicheres Spannen sowie ein einfaches Wechseln des Gummituches.The embodiment according to FIG. 4 differs from FIGS. 1 and 2 in that instead of a support spindle 10 with a circular cross section, a support spindle 10 'with an approximately triangular cross section was chosen. The support spindle 10 'is not rotatably mounted in the bridges 18 and also enables a uniform and secure tensioning and a simple change of the rubber blanket.

Der Längsschnitt durch die Spannvorrichtung gemäß Fig. 5 zeigt anstelle einer Stützspindel 10 auf der Innenseite der Brücke 18 im Bereich des Gummituches 2 angeordnete Stützbolzen 19, die in den Brücken 18 drehbar oder starr gelagert sind. Hiermit läßt sich insbesondere bei schmalen Maschinen eine sichere und gleichmäßige Spannung des Gummituches 2 erreichen.5 shows instead of a support spindle 10 on the inside of the bridge 18 in the area of the rubber blanket 2 arranged support bolts 19 which are rotatably or rigidly mounted in the bridges 18. This enables a safe and uniform tensioning of the rubber blanket 2 to be achieved, particularly in the case of narrow machines.

Gemäß Fig. 6 ist die Stützspindel 17 konisch ausgebildet mit dem kleineren Durchmesser auf der Seite der Schneckenräder 16, wobei diese im gezeigten Ausführungsbeispiel beide auf der gleichen Seite vorgesehen sind. Insbesondere bei breiten Maschinen kann mit einer konischen Stützspindel eine Winkelverdrehung der Spannspindeln 6, 7 ausgeglichen werden, so daß eine gleichmäßige Spannung über die ganze Breite des Gummituches erreicht wird.6, the support spindle 17 is conical with the smaller diameter on the side of the worm wheels 16, both of which are provided on the same side in the exemplary embodiment shown. In the case of wide machines in particular, an angular rotation of the tensioning spindles 6, 7 can be compensated for with a conical support spindle, so that a uniform tension is achieved over the entire width of the rubber blanket.

Claims (6)

1. A system for pulling tight the blanket on the blanket cylinder of a rotary printing machine, the cylinder having a well parallel to its axis, which becomes broader inwardly and has within it two pulling-tight rods for the blanket, each rod having a cutout running therealong for taking up an edge of the blanket, said edges having reinforcements, characterized in that in the broad part of the well (5) between the outer face of the blanket cylinder (1) and the two pulling-tight rods (6, 7) a support bar (10) is placed which is parallel to the rods and is so near them that on pulling tight the blanket, the parts of the blanket (2) near to the reinforcements (9) are bent at an angle so that the reinforcements (9) are firstly forced home into the lengthways cutout (8) and are stopped from being pulled out of them.
2. A system as claimed in claim 1, characterized in that the support bar (10) has a round cross-section with a smaller diameter than the pulling-tight rods (6, 7) and is bearinged in bearing parts (11), placed at the two ends of the cylinder in bridgepieces (18), so that it may be freely turned.
3. A system as claimed in claims 1 and 2, characterized in that the support bar (10) is placed symmetrically between the two pulling-tight rods (6, 7) and has a greater diameter than the space between the pulling-tight rode (6, 7).
4. A system as claimed in claims 1 and 2, characterized in that the support bar (10') has a three-cornered or angled form across the breadth of the blanket (2) and is placed in bridgepieces (18) so that it may not be turned in them.
5. A system as claimed in claims 1 and 2, characterized in that in place of the support bar (10) on the two sides of the cylinder near the blanket (2) there are support bolts (19).
6. A system as claimed in claims 1 and 2, characterized in that the support bar (17) is coned over the breadth of the blanket (2) and is placed with its smaller diameter on the side of the worm wheels (16) joined with the pulling-tight rods (6,7) for turning the same.
EP79102339A 1978-09-27 1979-07-09 Device for tensioning the blanket on the transfer cylinder of a rotary printing machine Expired EP0010122B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79102339T ATE477T1 (en) 1978-09-27 1979-07-09 DEVICE FOR TENSIONING THE RUBBER CLOTH ON THE RUBBER CYLINDER OF ROTARY PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2842000A DE2842000C3 (en) 1978-09-27 1978-09-27 Device for tensioning the blanket on the blanket cylinder of rotary printing machines
DE2842000 1978-09-27

Publications (3)

Publication Number Publication Date
EP0010122A2 EP0010122A2 (en) 1980-04-30
EP0010122A3 EP0010122A3 (en) 1980-07-09
EP0010122B1 true EP0010122B1 (en) 1981-12-16

Family

ID=6050573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79102339A Expired EP0010122B1 (en) 1978-09-27 1979-07-09 Device for tensioning the blanket on the transfer cylinder of a rotary printing machine

Country Status (5)

Country Link
US (1) US4261262A (en)
EP (1) EP0010122B1 (en)
JP (1) JPS5937228B2 (en)
AT (1) ATE477T1 (en)
DE (1) DE2842000C3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858545U (en) * 1981-10-16 1983-04-20 株式会社東京機械製作所 Blanket tensioning device in printing presses
DE3338450C1 (en) * 1983-10-22 1985-06-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Device for inserting the end sections of a flexible elevator into a pit of a cylinder of a printing press
US4577560A (en) * 1984-08-20 1986-03-25 R. R. Donnelley & Sons Company Gapless lock-up for offset printing cylinders
US4829896A (en) * 1987-05-18 1989-05-16 W. R. Grace & Co. Apparatus for attaching a printing blanket to a printing cylinder
JP3069098B1 (en) * 1999-09-22 2000-07-24 株式会社東京機械製作所 Blanket mounting device and blanket for printing press

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7148001U (en) * 1900-01-01 Maschinenfabrik Augsburg Nuernberg Ag Device for fastening the rubber blanket or a printing plate on the rubber or plate cylinder of a rotary offset printing machine
DE388029C (en) * 1921-10-23 1924-01-08 Vogtlaendische Maschinenfabrik Clamping device for flexible printing plates on rubber printing rotary machines
US2627230A (en) * 1945-05-26 1953-02-03 Hoe & Co R Blanket tensioning means
US2727463A (en) * 1952-01-21 1955-12-20 Tingue Brown & Co Blanketing of printing press impression cylinders
US2850970A (en) * 1955-04-22 1958-09-09 Levey Fred K H Co Inc Lock-up
DE1124051B (en) * 1955-04-22 1962-02-22 Fred K H Levey Company Inc Device for attaching the blanket to the blanket cylinder
GB918673A (en) * 1960-03-08 1963-02-13 Vickers Armstrongs Ltd Improvements in or relating to blanket tensioning means for the impression cylindersof rotary printing presses
FR1367860A (en) * 1963-08-13 1964-07-24 Crabtree & Sons Ltd R Development of rotary printing machines
DE1239706B (en) * 1963-08-27 1967-05-03 Winkler Fallert & Co Maschf Device for tensioning the rubber blanket on the rubber cylinder
JPS4930241U (en) * 1972-06-14 1974-03-15
DE2606223A1 (en) * 1976-02-17 1977-08-18 Maschf Augsburg Nuernberg Ag DEVICE FOR TENSIONING THE RUBBER CLOTH OF AN OFFSET PRINTING MACHINE

Also Published As

Publication number Publication date
EP0010122A3 (en) 1980-07-09
DE2842000A1 (en) 1980-04-10
EP0010122A2 (en) 1980-04-30
US4261262A (en) 1981-04-14
DE2842000C3 (en) 1984-08-30
ATE477T1 (en) 1982-01-15
DE2842000B2 (en) 1981-01-15
JPS5937228B2 (en) 1984-09-08
JPS5546978A (en) 1980-04-02

Similar Documents

Publication Publication Date Title
DE2632243C3 (en) Transfer drum for printing machines that can be adjusted to variable sheet lengths
DE3326215C2 (en) Device for clamping a printing plate or a rubber blanket
DE2341059C2 (en) Tension winding mandrel
EP0011076B1 (en) Sheet supporting device
DE2707643B2 (en) Device for tensioning a printing blanket on the cylinder of a printing machine
DE69405824T2 (en) Inking unit for printing machines
EP0010122B1 (en) Device for tensioning the blanket on the transfer cylinder of a rotary printing machine
DE3541222A1 (en) DEVICE FOR CORRECTING THE TILTING OF A PLATE IN A PRINTING MACHINE
DE416289C (en) Device for adjusting the pressure of the cylinders in rotary printing machines, in particular rotary rubber printing machines
DE3315488A1 (en) DEVICE FOR TENSIONING PRINTING PLATES
DE1775034B1 (en) RELEASABLE SPRING CONNECTION FOR HOLDING STRIPS AND PLATES OF FOERMIGER COMPONENTS IN PARTICULAR FOR SCRAPING BARS ON PAPER MACHINES
DE2606223A1 (en) DEVICE FOR TENSIONING THE RUBBER CLOTH OF AN OFFSET PRINTING MACHINE
DE3812137A1 (en) DEVICE FOR FASTENING A FLEXIBLE PRINT PLATE
DE1507765C3 (en) Gas filter
DE2547481B2 (en) Device for fastening and tensioning flexible pressure plates
DE2163417A1 (en) DEVICE FOR FASTENING THE RUBBER CLOTH OR A PRINT PLATE ON THE RUBBER OR PLATE CYLINDER OF A ROTARY OFFSET PRINTING MACHINE
DE3036519C2 (en) Device for fastening the rubber blanket on a rubber cylinder of an offset printing unit and device for carrying out the method
DE1124051B (en) Device for attaching the blanket to the blanket cylinder
DE2249111C3 (en) Device for ribbon drive with automatic change of direction in high-speed printing units
DE255540C (en)
DE475763C (en) Oscillograph
DE2717485C2 (en) Clamping device for a slotted stator or rotor core of an electrical machine
DE3111964C2 (en) Guide device for guiding a wrapping material web in a coin wrapping machine
WO1983004218A1 (en) Device for tensioning a rubber blanket
DE3503786A1 (en) Reel system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL SE

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL SE

REF Corresponds to:

Ref document number: 477

Country of ref document: AT

Date of ref document: 19820115

Kind code of ref document: T

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: M.A.N.- ROLAND DRUCKMASCHINEN AKTIENGESELLSCHAFT

Effective date: 19820715

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840615

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840625

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840630

Year of fee payment: 6

Ref country code: BE

Payment date: 19840630

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19840704

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19840731

Year of fee payment: 6

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19830823

NLR2 Nl: decision of opposition
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19850709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19850731

Ref country code: BE

Effective date: 19850731

BERE Be: lapsed

Owner name: HEIDELBERGER DRUCKMASCHINEN A.G.

Effective date: 19850731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19860201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19870710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880331

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 79102339.3

Effective date: 19880831