EP0761435A1 - Device for wrapping a flexible image carrier around a form cylinder - Google Patents

Device for wrapping a flexible image carrier around a form cylinder Download PDF

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Publication number
EP0761435A1
EP0761435A1 EP95116776A EP95116776A EP0761435A1 EP 0761435 A1 EP0761435 A1 EP 0761435A1 EP 95116776 A EP95116776 A EP 95116776A EP 95116776 A EP95116776 A EP 95116776A EP 0761435 A1 EP0761435 A1 EP 0761435A1
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EP
European Patent Office
Prior art keywords
cylinder
image carrier
printing form
form cylinder
printing
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.)
Granted
Application number
EP95116776A
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German (de)
French (fr)
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EP0761435B1 (en
Inventor
Gotthard Schmid
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
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Filing date
Publication date
Priority claimed from DE19536884A external-priority patent/DE19536884C1/en
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0761435A1 publication Critical patent/EP0761435A1/en
Application granted granted Critical
Publication of EP0761435B1 publication Critical patent/EP0761435B1/en
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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
    • B41F30/06—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching of endless or like continuously-fed coverings

Definitions

  • the invention relates to a device for wrapping a printing form cylinder with a flexible print image carrier, wherein a first winding spool for handling a print image carrier that can be pulled onto the outer surface of the printing form cylinder and a second winding spool for winding the printed image carrier mounted on the outer surface are provided in the interior of the printing form cylinder are and on the printing form cylinder in its outer surface a single opening to a pit is formed in its interior, in which the first and the second winding spool are arranged together and from which the printed image carrier can be wound from the first winding spool onto the outer surface and from this onto the second winding spool is.
  • a drum for a copying machine is known from the prior art, US Pat. No. 4,231,652, in the interior of which two coils - a supply and a take-up spool - are received, which transport a web-shaped semiconductor material.
  • the drum together with the winding coils stored in it can be removed from the storage in that levers opposite the end faces of the drum are positively connected to pins which can be pulled out of the end face bores of the drum and retracted into them.
  • the pins can be moved axially by means of the pivotable levers; after the pins have released the front holes, the drum rests on support pins attached to the side walls.
  • DE 43 03 872 A1 shows a printing device with a forme cylinder and a method for preparing for printing the forme cylinder.
  • the forme cylinder is divided into two segments which are connected to one another in a form-fitting manner.
  • the winding spools that accommodate the print image carrier are housed in the upper segment.
  • removal of the winding spools when the supply spool is exhausted is possible either through the end face of the forme cylinder or a complete disassembly of the upper segment is required.
  • removal of the segment accommodating the winding spool in the machine appears to be cumbersome and difficult to carry out; Removal of the winding spools through the end faces makes it necessary to remove the forme cylinder from the machine.
  • the object of the invention is to improve the serviceability of a printing form cylinder storing a spoolable print image carrier and to minimize the downtimes.
  • An advantage of the solution according to the invention is the fact that the printing form cylinder can remain in the installed state in the machine during maintenance work.
  • the rewinding mechanism including the winding shafts can be removed in a simple manner through the peripheral opening in the lateral surface. After they have been removed, the bearing part supporting the winding shafts can be removed from the cylinder interior in a simple manner, as a result of which the entire interior of the cylinder is freely accessible for maintenance work through the peripheral opening. This will make one Dismantling of the printing form cylinder is unnecessary. This fact further drastically reduces the risk of damage or misalignment of the imaging units placed close to the surface of the printing form cylinder. In contrast, a dismantling and subsequent assembly of the printing form cylinder would make it necessary to readjust the imaging units. This necessary, but undesirable downtime can now also be dispensed with.
  • the mounting part is arranged in the region of one of the end faces of the printing form cylinder.
  • the storage part supports the first and the second winding spool of the rewinding mechanism for the print image carrier in the interior of the printing form cylinder by the storage part.
  • the bearing part can be fastened to one of the cylinder end parts, the winding spools being received in the bearing part and on the other hand in this opposite cylinder end part.
  • the bearing part and the cylinder end part serving to receive the winding spool are provided with openings for receiving the winding spools.
  • integrated bearer rings are provided in the cylinder end parts of the printing form cylinder, the running surfaces of which extend next to the outer surface of the printing form cylinder.
  • a printing form cylinder 1 shows a printing form cylinder 1 with a circumferential opening 2 in its lateral surface 9.
  • a rewinding mechanism 4 is accommodated, which comprises winding spools 5 and 6.
  • winding spools 5 and 6 one of which holds a supply of the printed image carrier 3, while the other serves to receive the printed image carrier section which has been unwound from the lateral surface 9, that is to say used, the printed image carrier 3 is also transported again to the lateral surface 9 of the printing form cylinder 1 to be directly illustrated on it.
  • the imaging units themselves are not the subject of the present invention; they should only be mentioned to the extent that they are to be positioned correctly on the surface of the printing form cylinder 1 in order to ensure correct imaging of the print image carrier 3 located on the lateral surface 9. It is important to maintain the correct setting of the imaging units on the surface of the print image carrier 3 when carrying out maintenance work on the printing form cylinder 1.
  • a storage part 30 accommodates the winding spools 5 and 6 which serve to advance the print image carrier.
  • the printed image carrier 3 is guided over curves 7, 8 which delimit the channel opening 2 in the lateral surface 9.
  • FIG. 2 shows a printing form cylinder in a conventional design with spindle holders arranged on the end outside of the cylinder and removable in the axial direction.
  • spindle shafts 14 are received in the first spindle holder.
  • Each of the spindle shafts 14 is provided with a toothed segment 12, 13, by means of which the two winding spools 5, 6 for the printed image carrier 3 can be locked simultaneously. All that is required is the actuation of the first segment 12.
  • the spindle shafts 14 each hold compression springs 15 which are penetrated by a bolt 16.
  • the bolts 16 in turn have removable spindle heads 17, which in turn fix the ends of the winding coils 5 and 6.
  • a second spindle holder 18 is provided, which can also be removed from the printing form cylinder 1 only from the outside.
  • the second spindle holder 18 receives both a gear 19 and a ratchet wheel 20, which cooperates with a pawl 21, which in turn is biased by a spring 22.
  • FIG. 2 shows the parts of the rewinding mechanism 4.
  • the spindle holder 18 To replace the parts of the rewinding mechanism 4, the spindle holder 18 must be removed outside the machine. Parts 12 to 17 are can be removed through the peripheral opening 2 without removing the spindle holder 22.
  • the printing form cylinder 1 comprises a first cylinder end part 26 and a second cylinder end part 28, between which a middle piece 23 is screwed, which contains a peripheral opening 2.
  • a pin 27 or 29 is formed on each of the cylinder end parts 26 and 28, through which the printing form cylinder 1 is mounted in the machine.
  • a bearing part 30 is arranged on one of the cylinder end faces 26 or 28 - here on the second cylinder end part 28. This mounting part 30 is provided with openings which accommodate components of the rewinding mechanism 4 shown in more detail in FIG.
  • the bearing part 30 can be connected to the second cylinder end part 28, for example, via a screw connection 31. If the print image carrier supply on one of the winding spools 5, 6 is exhausted, these are moved away from the spindle heads 17 by rotating the toothed segments 12 and 13 and releasing the prestressing of the compression springs 15 and removed through the peripheral opening 2. In the event of service, the screw connection 31 between the bearing part 30 and the corresponding cylinder end part can then also be loosened through the peripheral opening 2; the bearing part 30, together with the components of the rewinding mechanism 4 accommodated thereon, can be removed from the inside of the printing form cylinder 1. In comparison, in the configuration shown in FIG. 2, it is necessary to dismantle the second spindle holder 18 from the outside, which necessitates removal of the printing form cylinder 1 from the machine.
  • the bearing part 30 can of course also be accommodated on the first cylinder end part 26, in which case this cylinder end part would then have to be designed in accordance with the second cylinder end part 28.
  • the cylindrical end parts 26 and 28 each have integrated bearer rings 32 and 34. This one-piece design does not result in a joint, so that there is no tolerance problem in the surface treatment of the running surfaces 33 or 35. It is therefore possible to finish grinding the first cylinder end part 26 together with the tread 35 when the surface is finished.
  • the second cylinder end part 28 is to be machined analogously.
  • the treads 33, 35 and all other precision outer diameters are finished after assembly of the parts 23, 27 and 29. This guarantees perfect concentricity of these diameters to one another.
  • FIG. 4 shows a further variant of a winding spool bearing.
  • the winding spool 5 is shown in a position for removing the supply roll, while the winding spool 6 is shown in the position which it also assumes in operation.
  • first cylinder end part 26 of the printing form cylinder 1 shells 44 are mounted in the area of the winding spools 5, 6, which are each fastened to the first cylinder end part 26 with a screw connection 45.
  • the pin 27 of the printing form cylinder 1 is mounted in the side wall of the machine, which is not shown here, however, so that access to the first cylinder part 26 from the outside is made very difficult by the machine side wall.
  • the shells 44 mentioned are each penetrated by sleeves 37.
  • a cone 42 On the sleeves 37 there is a cone 42, one roller bearing and one toothed segment 38 and 39, respectively.
  • two pins 47 provided with a stop each take a compression spring 48.
  • the pin 47 serves as an abutment for the compression spring 48, which brings the cone 42 into the removal position for the coil 5.
  • the pin 47 is guided in the bore in the cylinder part 26; its axial displaceability is limited by the stop on the pin 47.
  • toothed segment 38 and 39 there is a toothed segment 38 and 39 on each of the sleeves 37.
  • the toothing of the two toothed segments 38, 39 serves to simultaneously lock the two coils 5 and 6 in the same way.
  • the two toothed segments 38, 39 are moved axially away from the shell 44 during rotation via axial curves, so that the coils 5 and 6 are tensioned.
  • the two toothed segments 38, 39 can also be placed on the part 44 by the axial curves. As a result, the coils 5 and 6 are relaxed, so that the coils 5 and 6 can be removed from the interior of the cylinder.
  • each cone 42 is provided with an internal thread 51, so that the cone 42 can be easily removed from the sleeves 37 after the winding spools 5 and 6 have been removed. Then the flat sides of the two pins 47 are exposed so that they can be rotated by means of a tool to be inserted into the pin thread 49, so that the pin thread 49 and the pin 47 can be removed from the first cylinder part 26.
  • the position of the winding spool 6 in the operating state is shown on the basis of the lower winding spool 6, also shown in FIG.
  • the spring 48 holds the sleeve 37 on the pin 47 in a prestressed position and thus fixes the winding spool 6 in the axial direction.
  • the spring 48 is tensioned.
  • the axial displacement of the sleeves 37 always takes place together; the toothed segments 38, 39 never come out of engagement, for reasons of a simplified representation, the upper sleeve 37 for the coil 5 is shown in a relaxed position in FIG. 5 and the lower sleeve 37 for the coil 6 is shown in the operating state.

Landscapes

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

Abstract

The appts. has a first spool (5) that starts rolling process of a printing image support body at a mantle surface formed inside a version trunk (1). A second spool (6) finishes the rolling process of the printing support body around the mantle surface of the version trunk. A contact-surface opening (2) is formed at an inner space provided at the mantle surface of the version trunk. The first and second spools are arranged at the inner space. The inner space is provided as a printing image support body releasing unit. The flexible printing image support body is extracted from the version trunk through a support rolling mechanism (30) held by a support (3) at a fixed position.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Umwicklung eines Druckformzylinders mit einem flexiblen Druckbildträger, wobei im Inneren des Druckformzylinders eine erste Wickelspule zur Abwicklung eines Druckbildträgers, der auf die Mantelfläche des Druckformzylinder aufziehbar ist und eine zweite Wickelspule zur Aufwicklung des auf die Mantelfläche aufgezogenen Druckbildträgers vorgesehen sind und am Druckformzylinder in seiner Mantelfläche eine einzige Öffnung zu einer Grube im seinem Inneren ausgebildet ist, in der die erste und die zweite Wickelspule gemeinsam angeordnet sind und aus der der Druckbildträger von der ersten Wickelspule auf die Mantelfläche und von dieser auf die zweite Wickelspule wickelbar ist.The invention relates to a device for wrapping a printing form cylinder with a flexible print image carrier, wherein a first winding spool for handling a print image carrier that can be pulled onto the outer surface of the printing form cylinder and a second winding spool for winding the printed image carrier mounted on the outer surface are provided in the interior of the printing form cylinder are and on the printing form cylinder in its outer surface a single opening to a pit is formed in its interior, in which the first and the second winding spool are arranged together and from which the printed image carrier can be wound from the first winding spool onto the outer surface and from this onto the second winding spool is.

Aus dem Stand der Technik, US 4,231,652, ist beispielsweise eine Trommel für ein Kopiergerät bekannt, in deren Inneren zwei Spulen - eine Vorrats- und eine Aufnahmespule - aufgenommen sind, die ein bahnförmiges Halbleitermaterial transportieren. Die Trommel samt der in ihr gelagerten Wickelspulen ist aus der Lagerung dadurch entnehmbar, daß den Stirnseiten der Trommel gegenüberliegende Hebel mit aus den Stirnseitenbohrungen der Trommel herausziehbaren und in diese wieder einziehbaren Zapfen formschlüssig verbunden sind. Mittels der schwenkbaren Hebel können die Zapfen axial bewegt werden; nachdem die Zapfen die stirnseitigen Bohrungen freigegeben haben, liegt die Trommel auf an den Seitenwänden befestigten Stützzapfen auf.For example, a drum for a copying machine is known from the prior art, US Pat. No. 4,231,652, in the interior of which two coils - a supply and a take-up spool - are received, which transport a web-shaped semiconductor material. The drum together with the winding coils stored in it can be removed from the storage in that levers opposite the end faces of the drum are positively connected to pins which can be pulled out of the end face bores of the drum and retracted into them. The pins can be moved axially by means of the pivotable levers; after the pins have released the front holes, the drum rests on support pins attached to the side walls.

DE 43 03 872 A1 zeigt eine Druckvorrichtung mit einem Formzylinder und ein Verfahren zur Druckvorbereitung des Formzylinders. In einer der offenbarten Ausführungsformen ist der Formzylinder in zwei Segmente unterteilt, die formschlüssig miteinander verbunden sind. In dieser Ausführungsform sind die Wickelspulen, die den Druckbildträger aufnehmen, im oberen Segment untergebracht. Bei der erwähnten Ausführungsform ist eine Entnahme der Wickelspulen bei erschöpfter Vorratsspule entweder durch die Stirnseite des Formzylinders möglich oder eine komplette Demontage des oberen Segmentes erforderlich. Eine Entnahme des die Wickelspule aufnehmenden Segmentes in der Maschine erscheint angesichts der Größe des Bauteils umständlich und schwierig durchführbar zu sein; eine Entnahme der Wickelspulen durch die Stirnseiten macht eine Demontage des Formzylinders aus der Maschine erforderlich.DE 43 03 872 A1 shows a printing device with a forme cylinder and a method for preparing for printing the forme cylinder. In one of the disclosed embodiments, the forme cylinder is divided into two segments which are connected to one another in a form-fitting manner. In this embodiment, the winding spools that accommodate the print image carrier are housed in the upper segment. In the embodiment mentioned, removal of the winding spools when the supply spool is exhausted is possible either through the end face of the forme cylinder or a complete disassembly of the upper segment is required. In view of the size of the component, removal of the segment accommodating the winding spool in the machine appears to be cumbersome and difficult to carry out; Removal of the winding spools through the end faces makes it necessary to remove the forme cylinder from the machine.

Angesichts des skizzierten Standes der Technik liegt der Erfindung die Aufgabe zugrunde, die Servicefreundlichkeit eines einen spulbaren Druckbildträger bevorratenden Druckformzylinders zu verbessern und die Stillstandszeiten zu minimieren.In view of the outlined state of the art, the object of the invention is to improve the serviceability of a printing form cylinder storing a spoolable print image carrier and to minimize the downtimes.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst.This object is solved by the features of claim 1.

Von Vorteil bei der erfindungsgemäßen Lösung ist der Umstand, daß während der Durchführung von Wartungsarbeiten der Druckformzylinder im in der Maschine eingebauten Zustand verbleiben kann. Die Umspulmechanik samt der Wickelwellen ist in einfacher Weise durch die Umfangsöffnung in der Mantelfläche entnehmbar. Nach deren Entnahme kann das die Wickelwellen abstützende Lagerungsteil in einfacher Weise aus dem Zylinderinneren entnommen werden, wodurch der gesamte Innenraum des Zylinders durch die Umfangsöffnung für Wartungsarbeiten frei zugänglich wird. Dadurch wird eine Demontage des Druckformzylinders überflüssig. Durch diesen Umstand wird weiterhin die Gefahr einer Beschädigung oder Verstellung der nah an die Druckformzylinderoberfläche angestellten Bebilderungseinheiten drastisch verringert. Bei einer Demontage und anschließender Montage des Druckformzylinders hingegen wäre eine Neujustage der Bebilderungseinheiten unumgänglich. Diese notwendige, jedoch unerwünschte Stillstandszeit kann nun ebenfalls entfallen.An advantage of the solution according to the invention is the fact that the printing form cylinder can remain in the installed state in the machine during maintenance work. The rewinding mechanism including the winding shafts can be removed in a simple manner through the peripheral opening in the lateral surface. After they have been removed, the bearing part supporting the winding shafts can be removed from the cylinder interior in a simple manner, as a result of which the entire interior of the cylinder is freely accessible for maintenance work through the peripheral opening. This will make one Dismantling of the printing form cylinder is unnecessary. This fact further drastically reduces the risk of damage or misalignment of the imaging units placed close to the surface of the printing form cylinder. In contrast, a dismantling and subsequent assembly of the printing form cylinder would make it necessary to readjust the imaging units. This necessary, but undesirable downtime can now also be dispensed with.

In weitere Ausgestaltung des der Erfindung zugrundeliegenden Gedankens ist das Lagerungsteil im Bereich einer der Stirnseiten des Druckformzylinders angeordnet. Durch das Lagerungsteil sind die erste und die zweite Wickelspule der Umspulmechanik für den Druckbildträger im Inneren des Druckformzylinders durch das Lagerungsteil abgestützt. Das Lagerungsteil kann an einer der Zylinderstirnteile befestigt sein, wobei die Wickelspulen einerseis im Lagerungsteil und andererseits in diesem gegenüberliegenden Zylinderstirnteil aufgenommen werden. Das Lagerungsteil wie das zur Aufnahme der Wickelspule dienende Zylinderstirnteil sind mit Öffnungen zur Aufnahme der Wickelspulen versehen. Zur Verbesserung der Maßhaltigkeit bei Oberflächenendbearbeitungen, sind in den Zylinderstirnteilen des Druckformzylinders integrierte Schmitzringe vorgesehen, deren Laufflächen sich neben der Mantelfläche des Druckformzylinders erstrecken.In a further embodiment of the idea on which the invention is based, the mounting part is arranged in the region of one of the end faces of the printing form cylinder. The storage part supports the first and the second winding spool of the rewinding mechanism for the print image carrier in the interior of the printing form cylinder by the storage part. The bearing part can be fastened to one of the cylinder end parts, the winding spools being received in the bearing part and on the other hand in this opposite cylinder end part. The bearing part and the cylinder end part serving to receive the winding spool are provided with openings for receiving the winding spools. To improve the dimensional accuracy in surface finishing operations, integrated bearer rings are provided in the cylinder end parts of the printing form cylinder, the running surfaces of which extend next to the outer surface of the printing form cylinder.

Anhand einer Zeichnung sei die Erfindung nachstehend detailliert erläutert.The invention is explained in detail below with reference to a drawing.

Es zeigt:

Fig. 1
einen Schnitt durch einen Druckformzylinder mit Lagerungsteil für die Druckbildträgerspulen,
Fig. 2
einen Druckformzylinder mit konventionell außerhalb der Maschine demontierbaren Zylinderstirnseiten,
Fig. 3
einen Druckformzylinderquerschnitt mit in der Maschine entnehmbaren Lagerungsteilen und Bildträgerweiterspulteilen und
Fig. 4
eine Wickelspulenlagerung an einer Stirnseite des Druckformzylinders mit in der Stirnseite verschraubten Führungszapfen der Wickelspulenlager.
It shows:
Fig. 1
3 shows a section through a printing form cylinder with a storage part for the print image carrier coils,
Fig. 2
a printing form cylinder with conventionally removable cylinder end faces outside the machine,
Fig. 3
a printing forme cylinder cross-section with removable storage parts and image carrier spooling parts in the machine and
Fig. 4
a winding spool bearing on one end of the printing form cylinder with guide pins of the winding spool bearings screwed into the end.

In der Darstellung nach Fig. 1 ist ein Druckformzylinder 1 mit einer Umfangsöffnung 2 in seiner Mantelfläche 9 wiedergegeben. Im Inneren des Druckformzylinders 1 ist eine Umspulmechanik 4 aufgenommen, die Wickelspulen 5 und 6 umfaßt. Mittels dieser Wickelspulen 5 und 6, von denen eine einen Vorrat des Druckbildträgers 3 aufnimmt, während die andere zur Aufnahme des von der Mantelfläche 9 abgewickelten, also benutzten Druckbildträgerabschnittes dient, wird der Druckbildträger 3 je auch Druckauftrag erneut auf die Mantelfläche 9 des Druckformzylinders 1 transportiert, um auf dieser direkt bebildert zu werden. Die Bebilderungseinheiten an sich sind nicht Gegenstand der vorliegenden Erfindung; sie seien nur insoweit erwähnt, als daß diese korrekt an die Oberfläche des Druckformzylinders 1 anzustellen sind, um eine korrekte Bebilderung des jeweils auf der Mantelfläche 9 befindlichen Druckbildträgers 3 zu gewährleisten. Die korrekte Einstellung der Bebilderungseinheiten an die Oberfläche des Druckbildträgers 3 gilt es bei der Durchführung von Wartungsarbeiten am Druckformzylinder 1 möglichst beizubehalten.1 shows a printing form cylinder 1 with a circumferential opening 2 in its lateral surface 9. Inside the printing form cylinder 1, a rewinding mechanism 4 is accommodated, which comprises winding spools 5 and 6. By means of these winding spools 5 and 6, one of which holds a supply of the printed image carrier 3, while the other serves to receive the printed image carrier section which has been unwound from the lateral surface 9, that is to say used, the printed image carrier 3 is also transported again to the lateral surface 9 of the printing form cylinder 1 to be directly illustrated on it. The imaging units themselves are not the subject of the present invention; they should only be mentioned to the extent that they are to be positioned correctly on the surface of the printing form cylinder 1 in order to ensure correct imaging of the print image carrier 3 located on the lateral surface 9. It is important to maintain the correct setting of the imaging units on the surface of the print image carrier 3 when carrying out maintenance work on the printing form cylinder 1.

Ein Lagerungsteil 30 nimmt die dem Druckbildträgervorschub dienenden Wickelspulen 5 und 6 auf. Zur Vermeidung von Beschädigungen am Druckbildträger 3 und der Aufrechterhaltung seiner gleichmäßigen Spannung wird der Druckbildträger 3 über Rundungen 7, 8, welche die Kanalöffnung 2 in der Mantelfläche 9 begrenzt, geführt.A storage part 30 accommodates the winding spools 5 and 6 which serve to advance the print image carrier. In order to avoid damage to the printed image carrier 3 and to maintain its uniform tension, the printed image carrier 3 is guided over curves 7, 8 which delimit the channel opening 2 in the lateral surface 9.

Fig. 2 zeigt einen Druckformzylinder in konventioneller Bauweise mit stirnseitig außerhalb des Zylinders angeordneten, in axialer Richtung entnehmbaren Spindelhaltern.2 shows a printing form cylinder in a conventional design with spindle holders arranged on the end outside of the cylinder and removable in the axial direction.

An der Stirnseite des Druckformzylinders 1, an welchem der erste Spindelhalter 11 angeordnet ist, befindet sich ein schräg verzahntes Antriebsrad 10 für den Antrieb des Druckformzylinders. Im montierten Zustand sind im ersten Spindelhalter 11 Spindelschäfte 14 aufgenommen. Jeder der Spindelschäfte 14 ist mit einem Zahnsegment 12, 13 versehen, durch welche eine gleichzeitige Arretierung der beiden Wickelspulen 5, 6 für den Druckbildträger 3 vorgenommen werden kann. Dazu bedarf es lediglich der Betätigung des ersten Segmentes 12. Die Spindelschäfte 14 nehmen jeweils Druckfedern 15 auf, die von einem Bolzen 16 durchsetzt werden. Die Bolzen 16 verfügen ihrerseits über abnehmbare Spindelköpfe 17, welche wiederum die Enden der Wickelspulen 5 und 6 fixieren. An der gegenüberliegenden Stirnseite des Druckformzylinders 1 ist ein zweiter Spindelhalter 18 vorgesehen, der ebenfalls nur von außen vom Druckformzylinder 1 demontierbar ist. Der zweite Spindelhalter 18 nimmt sowohl ein Zahnrad 19 als auch ein Klinkenrad 20 auf, welches mit einer Sperrklinke 21 zusammenwirkt, die ihrerseits durch eine Feder 22 vorgespannt ist. Mittels der Sperrklinke 20 kann eine der Wickelspulen 5, 6 in ihrer Lage blockiert werden, während durch Weiterdrehen der anderen Wickelspule der Druckbildträger 3 auf der Mantelfläche 9 des Druckformzylinder 1 gespannt werden kann.On the end face of the printing form cylinder 1, on which the first spindle holder 11 is arranged, there is an obliquely toothed drive wheel 10 for driving the printing form cylinder. In the assembled state 11 spindle shafts 14 are received in the first spindle holder. Each of the spindle shafts 14 is provided with a toothed segment 12, 13, by means of which the two winding spools 5, 6 for the printed image carrier 3 can be locked simultaneously. All that is required is the actuation of the first segment 12. The spindle shafts 14 each hold compression springs 15 which are penetrated by a bolt 16. The bolts 16 in turn have removable spindle heads 17, which in turn fix the ends of the winding coils 5 and 6. On the opposite end face of the printing form cylinder 1, a second spindle holder 18 is provided, which can also be removed from the printing form cylinder 1 only from the outside. The second spindle holder 18 receives both a gear 19 and a ratchet wheel 20, which cooperates with a pawl 21, which in turn is biased by a spring 22. By means of the pawl 20, one of the winding spools 5, 6 can be blocked in its position, while by rotating the other winding spool the printed image carrier 3 can be tensioned on the lateral surface 9 of the printing form cylinder 1.

Die in Fig. 2 wiedergegebene Darstellung zeigt die Teile der Umspulmechanik 4. Zum Austauschen der Teile der Umspulmechanik 4 ist die Demontage des Spindelhalters 18 außerhalb der Maschine erforderlich. Die Teile 12 bis 17 sind ohne Demontage des Spindelhalters 22 durch die Umfangsöffnung 2 demontierbar.The representation shown in FIG. 2 shows the parts of the rewinding mechanism 4. To replace the parts of the rewinding mechanism 4, the spindle holder 18 must be removed outside the machine. Parts 12 to 17 are can be removed through the peripheral opening 2 without removing the spindle holder 22.

In der erfindungsgemäßen Konfiguration gemäß Fig. 3 kann die Demontage des äußeren Spindelhalters 11, was das Entfernen des Druckformzylinders 1 aus der Maschine zur Folge hat, entfallen. Der erfindungsgemäße Druckformzylinder 1 umfaßt ein erstes Zylinderstirnteil 26 und ein zweites Zylinderstirnteil 28, zwischen denen ein Mittelstück 23 verschraubt ist, das eine Umfangsöffnung 2 enthält. An den Zylinderstirnteilen 26 bzw. 28 ist je ein Zapfen 27 bzw. 29 ausgebildet, durch welche der Druckformzylinder 1 in der Maschine gelagert ist. An einem der Zylinderstirnseiten 26 oder 28 - hier am zweiten Zylinderstirnteil 28 - ist ein Lagerungsteil 30 angeordnet. Dieses Lagerungsteil 30 ist mit Öffnungen versehen, welche Komponenten der in Figur 2 näher dargestellten Umspulmechanik 4 aufnehmen. Das Lagerungsteil 30 kann beispielsweise über eine Verschraubung 31 mit dem zweiten Zylinderstirnteil 28 verbunden sein. Ist der Druckbildträgervorrat auf einer der Wickelspulen 5, 6 erschöpft, werden diese durch Drehen der Zahnsegmente 12 und 13 und Lösen der Vorspannung der Druckfedern 15 von den Spindelköpfen 17 wegbewegt und durch die Umfangsöffnung 2 entnommen. Im Servicefall kann danach ebenfalls durch die Umfangsöffnung 2 die Verschraubung 31 zwischen Lagerungsteil 30 und dem entsprechenden Zylinderstirnteil gelöst werden; das Lagerungsteil 30 ist mitsamt der daran aufgenommenen Komponenten der Umspulmechanik 4 aus dem Inneren des Druckformzylinders 1 entnehmbar. Im Vergleich dazu ist es bei der in Fig. 2 wiedergegebenen Konfiguration erforderlich, den zweiten Spindelhalter 18 von außen zu demontieren, was ein Entfernen des Druckformzylinders 1 aus der Maschine erforderlich macht.3, the dismantling of the outer spindle holder 11, which results in the removal of the printing form cylinder 1 from the machine, can be omitted. The printing form cylinder 1 according to the invention comprises a first cylinder end part 26 and a second cylinder end part 28, between which a middle piece 23 is screwed, which contains a peripheral opening 2. A pin 27 or 29 is formed on each of the cylinder end parts 26 and 28, through which the printing form cylinder 1 is mounted in the machine. A bearing part 30 is arranged on one of the cylinder end faces 26 or 28 - here on the second cylinder end part 28. This mounting part 30 is provided with openings which accommodate components of the rewinding mechanism 4 shown in more detail in FIG. The bearing part 30 can be connected to the second cylinder end part 28, for example, via a screw connection 31. If the print image carrier supply on one of the winding spools 5, 6 is exhausted, these are moved away from the spindle heads 17 by rotating the toothed segments 12 and 13 and releasing the prestressing of the compression springs 15 and removed through the peripheral opening 2. In the event of service, the screw connection 31 between the bearing part 30 and the corresponding cylinder end part can then also be loosened through the peripheral opening 2; the bearing part 30, together with the components of the rewinding mechanism 4 accommodated thereon, can be removed from the inside of the printing form cylinder 1. In comparison, in the configuration shown in FIG. 2, it is necessary to dismantle the second spindle holder 18 from the outside, which necessitates removal of the printing form cylinder 1 from the machine.

In der in Fig. 3 dargestellten Ausführungsform können sämtliche im Inneren des Druckformzylinders 1 aufgenommenen Komponenten durch die Umfangsöffnung 2 entnommen werden. Die im ersten Zylinderstirnteil 26 gelagerten Komponenten der Umspulmechanik 4 sind - auch ohne Entnahme von Teil 30 - ebenfalls gut zugänglich, ohne daß es einer Demontage des ersten Zylinderstirnteiles 26 bedürfte.In the embodiment shown in FIG. 3, all that are accommodated inside the printing form cylinder 1 can be accommodated Components can be removed through the circumferential opening 2. The components of the rewinding mechanism 4 mounted in the first cylinder end part 26 are also easily accessible, even without removing part 30, without the first cylinder end part 26 having to be dismantled.

Das Lagerungsteil 30 kann selbstverständlich ebensogut an ersten Zylinderstirnteil 26 aufgenommen sein, wobei dann dieses Zylinderstirnteil entsprechend dem zweiten Zylinderstirnteil 28 auszubilden wäre.The bearing part 30 can of course also be accommodated on the first cylinder end part 26, in which case this cylinder end part would then have to be designed in accordance with the second cylinder end part 28.

Die Zylinderstirnteile 26 bzw. 28 verfügen jeweils über integrierte Schmitzringe 32 bzw. 34. Durch diese einteilige Ausführung entsteht keine Fügestelle, so daß sich ein Toleranzproblem bei der Oberflächenbearbeitung der Laufflächen 33 bzw. 35 nicht stellt. Es besteht also die Möglichkeit, bei der Oberflächenendbearbeitung des ersten Zylinderstirnteils 26 dieses sowie die Lauffläche 35 gemeinsam fertig zu schleifen. Analog ist das zweite Zylinderstirnteil 28 zu bearbeiten.The cylindrical end parts 26 and 28 each have integrated bearer rings 32 and 34. This one-piece design does not result in a joint, so that there is no tolerance problem in the surface treatment of the running surfaces 33 or 35. It is therefore possible to finish grinding the first cylinder end part 26 together with the tread 35 when the surface is finished. The second cylinder end part 28 is to be machined analogously.

Es werden die Laufflächen 33, 35 sowie alles sonstigen Präzisionsaußendurchmesser nach der Montage der Teile 23, 27 und 29 fertiggeschliffen. Dies garantiert eine einwandfreie Rundlaufgenauigkeit dieser Durchmesser zueinander.The treads 33, 35 and all other precision outer diameters are finished after assembly of the parts 23, 27 and 29. This guarantees perfect concentricity of these diameters to one another.

Fig. 4 zeigt eine weitere Variante einer Wickelspulenlagerung.4 shows a further variant of a winding spool bearing.

In dieser Darstellung ist die Wickelspule 5 in einer Position zur Entnahme der Vorratsrolle gezeigt, während die Wickelspule 6 in der Position wiedergegeben ist, die sie auch im Betrieb einnimmt.In this illustration, the winding spool 5 is shown in a position for removing the supply roll, while the winding spool 6 is shown in the position which it also assumes in operation.

Im ersten Zylinderstirnteil 26 des Druckformzylinders 1 sind im Bereich der Wickelspulen 5, 6 jeweils Schalen 44 montiert, die mit jeweils einer Verschraubung 45 an dem ersten Zylinderstirnteil 26 befestigt sind. Der Zapfen 27 des Druckformzylinders 1 ist in der Seitenwand der Maschine gelagert, die hier jedoch nicht dargestellt ist, so daß der Zugang zum ersten Zylinderteil 26 von außen durch die Maschinenseitenwand sehr erschwert wird.In the first cylinder end part 26 of the printing form cylinder 1, shells 44 are mounted in the area of the winding spools 5, 6, which are each fastened to the first cylinder end part 26 with a screw connection 45. The pin 27 of the printing form cylinder 1 is mounted in the side wall of the machine, which is not shown here, however, so that access to the first cylinder part 26 from the outside is made very difficult by the machine side wall.

Die erwähnten Schalen 44 werden jeweils von Hülsen 37 durchsetzt. An den Hülsen 37 befindet sich jeweils ein Konus 42, je ein Wälzlager sowie je ein gezahntes Segment 38 bzw. 39. In das Zylinderstirnteil 26 jeweils eingeschraubt, nehmen zwei mit einem Anschlag versehene Zapfen 47 je eine Druckfeder 48. Der Zapfen 47 dient als Widerlager für die Druckfeder 48, die den Konus 42 in die Entnahmeposition für die Spule 5 bringt. Der Zapfen 47 wird in der Bohrung im Zylinderteil 26 geführt; seine axiale Verschiebbarkeit ist durch den Anschlag am Zapfen 47 begrenzt.The shells 44 mentioned are each penetrated by sleeves 37. On the sleeves 37 there is a cone 42, one roller bearing and one toothed segment 38 and 39, respectively. Screwed into the cylinder end part 26, two pins 47 provided with a stop each take a compression spring 48. The pin 47 serves as an abutment for the compression spring 48, which brings the cone 42 into the removal position for the coil 5. The pin 47 is guided in the bore in the cylinder part 26; its axial displaceability is limited by the stop on the pin 47.

An jeder der Hülsen 37 befindet sich ein gezahntes Segment 38 bzw. 39. Die Verzahnung der beiden gezahnten Segmente 38, 39 dient dazu, die beiden Spulen 5 und 6 in gleicher Weise simultan zu verriegeln. Die beiden gezahnten Segmente 38, 39 werden bei Rotation über Axialkurven axial von der Schale 44 wegbewegt, so daß die Spulen 5 und 6 gespannt werden. Durch die Axialkurven können die beiden gezahnten Segmente 38, 39 auch auf das Teil 44 zu gestellt werden. Dadurch werden die Spulen 5 bzw. 6 entspannt, so daß eine Entnahme der Spulen 5 und 6 aus dem Inneren des Zylinders erfolgen kann.There is a toothed segment 38 and 39 on each of the sleeves 37. The toothing of the two toothed segments 38, 39 serves to simultaneously lock the two coils 5 and 6 in the same way. The two toothed segments 38, 39 are moved axially away from the shell 44 during rotation via axial curves, so that the coils 5 and 6 are tensioned. The two toothed segments 38, 39 can also be placed on the part 44 by the axial curves. As a result, the coils 5 and 6 are relaxed, so that the coils 5 and 6 can be removed from the interior of the cylinder.

Ferner ist jeder Konus 42 mit einem Innengewinde 51 versehen, so daß der Konus 42 nach Entnahme der Wickelspulen 5 und 6 einfach aus den Hülsen 37 entfernt werden kann. Dann liegen die Planseiten der beiden Zapfen 47 frei, so daß diese mittels eines in das Zapfengewinde 49 einzuführenden Werkzeuges verdrehbar sind, so daß das Zapfengewinde 49 und der Zapfen 47 aus dem ersten Zylinderteil 26 herausnehmbar ist.Furthermore, each cone 42 is provided with an internal thread 51, so that the cone 42 can be easily removed from the sleeves 37 after the winding spools 5 and 6 have been removed. Then the flat sides of the two pins 47 are exposed so that they can be rotated by means of a tool to be inserted into the pin thread 49, so that the pin thread 49 and the pin 47 can be removed from the first cylinder part 26.

Anhand der ebenfalls in Figur 4 gezeigten unteren Wickelspule 6 wird die Lage der Wickelspule 6 im Betriebszustand gezeigt. Die Feder 48 hält die Hülse 37 auf den Zapfen 47 in einer vorgespannten Lage und fixiert somit die Wickelspule 6 in axialer Richtung. Bei Auslenkung der Hülse 37 wird die Feder 48 gespannt. Die axiale Verschiebung der Hülsen 37 erfolgt immer gemeinsam; die gezahnten Segmente 38, 39 geraten nie außer Eingriff, aus Gründen einer vereinfachten Darstellung ist in Figur 5 die obere Hülse 37 für die Spule 5 in entspannter Position gezeigt und die untere Hülse 37 für die Spule 6 in Betriebszustand wiedergegeben.The position of the winding spool 6 in the operating state is shown on the basis of the lower winding spool 6, also shown in FIG. The spring 48 holds the sleeve 37 on the pin 47 in a prestressed position and thus fixes the winding spool 6 in the axial direction. When the sleeve 37 is deflected, the spring 48 is tensioned. The axial displacement of the sleeves 37 always takes place together; the toothed segments 38, 39 never come out of engagement, for reasons of a simplified representation, the upper sleeve 37 for the coil 5 is shown in a relaxed position in FIG. 5 and the lower sleeve 37 for the coil 6 is shown in the operating state.

Es ei noch erwähnt, daß der sichere Halt der Spule 6 durch eine Rast in der Axialkurve an den gezahnten Segmenten 38, 39 gewährleistet ist. Ferner ist eine hier aus Gründen der übersichtlichkeit fortgelassene mechanische Sicherung durch die Kanalabdeckung gegeben.It also mentioned that the secure hold of the coil 6 is ensured by a catch in the axial curve on the toothed segments 38, 39. Furthermore, mechanical security is omitted here for reasons of clarity by the duct cover.

TeilelisteParts list

11
DruckformzylinderPrinting form cylinder
22nd
UmfangsöffnungCircumferential opening
33rd
DruckbildträgerPrint image carrier
44th
SpulmechanikWinding mechanism
55
WickelspuleWinding spool
66
WickelspuleWinding spool
77
RundungRounding
88th
RundungRounding
99
MantelflächeLateral surface
1010th
AntrlebsradDrive wheel
1111
erster Spindelhalterfirst spindle holder
1212th
oberes Zahnsegmentupper tooth segment
1313
unteres Zahnsegmentlower tooth segment
1414
SpindelschachtSpindle shaft
1515
DruckfederCompression spring
1616
Bolzenbolt
1717th
SpindelkopfSpindle head
1818th
zweiter Spindelhaltersecond spindle holder
1919th
Zahnradgear
2020th
KlinkenradRatchet wheel
2121
SperrklinkePawl
2222
Federfeather
2323
MittelstückCenterpiece
2424th
VerschraubungScrew connection
2525th
VerschraubungScrew connection
2626
erstes Zylinderstirnteilfirst cylinder front part
2727
ZapfenCones
2828
zweites Zylinderstirnteilsecond cylinder front part
2929
ZapfenCones
3030th
LagerungsteilStorage part
3131
VerschraubungScrew connection
3232
integrierter Schmitzringintegrated bearer ring
3333
LaufflächeTread
3434
integrierter Schmitzringintegrated bearer ring
3535
LaufflächeTread

Claims (10)

Vorrichtung zur Umwicklung eines Druckformzylinders mit einem flexiblen Druckbildträger, wobei im Inneren des Druckformzylinders eine erste Wickelspule zur Abwicklung eines Druckbildträgers, der auf die Mantelfläche des Druckbildzylinders aufziehbar ist und eine zweite Wickelspule zur Aufwicklung des auf die Mantelfläche aufgezogenen Druckbildträgers vorgesehen sind und am Druckformzylinder in seiner Mantelfläche eine einzige Öffnung zu einer Grube im seinem Inneren ausgebildet ist, in der die erste und die zweite Wickelspule gemeinsam angeordnet sind und aus der der Druckbildträger von der ersten Wickelspule auf die Mantelfläche und von dieser auf die zweite Wickelspule wickelbar ist,
dadurch gekennzeichnet,
daß ein eine Umspulmechanik (4) für den Druckbildträger (3) abstützendes Lagerungsteil (30) aus dem Inneren des in seiner Einbaulage befindlichen Druckformzylinders (1) entnehmbar angeordnet ist.Device for wrapping a printing forme cylinder with a flexible printing image carrier, a first winding spool for unwinding a printing image carrier which can be pulled onto the outer surface of the printing image cylinder and a second winding spool for winding up the printed image carrier mounted on the outer surface are provided in the inside of the printing forme cylinder and on the printing forme cylinder in it A single opening to a pit is formed in its interior, in which the first and the second winding spool are arranged together and from which the printed image carrier can be wound from the first winding spool onto the outer surface and from this onto the second winding spool,
characterized by
that a bearing part (30) supporting a rewinding mechanism (4) for the print image carrier (3) is arranged so that it can be removed from the interior of the printing form cylinder (1) in its installed position. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß das Lagerungsteil (30) im Bereich einer der Stirnseiten des Druckformzylinders (1) angeordnet ist.Device according to claim 1,
characterized by
that the bearing part (30) is arranged in the region of one of the end faces of the printing form cylinder (1). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die erste und die zweite Wickelspule (5, 6) der Umspulmechanik (4) für den Druckbildträger (3) im Inneren des Druckformzylinders (1) durch das Lagerungsteil (30) abgestützt ist.Device according to claim 1,
characterized by
that the first and the second winding spool (5, 6) of the rewinding mechanism (4) for the print image carrier (3) in the interior of the printing form cylinder (1) is supported by the bearing part (30). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß das Lagerungsteil (30) an einem Zylinderstirnteil (26, 28) lösbar befestigt ist.Device according to claim 1,
characterized by
that the bearing part (30) is releasably attached to a cylinder end part (26, 28). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Druckformzylinder (1) ein Mittelstück (23), ein erstes (26) und ein zweites Zylinderstirnteil (28) sowie ein demontierbares Lagerungsteil (30) umfaßt.Device according to claim 1,
characterized by
that the printing form cylinder (1) comprises a middle piece (23), a first (26) and a second cylinder end part (28) and a removable bearing part (30). Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß das Lagerungsteil (30) mittels einer Verschraubung (31) am zweiten Zylinderseitenteil (28) befestigt ist.Device according to claim 4,
characterized by
that the bearing part (30) is fastened to the second cylinder side part (28) by means of a screw connection (31). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Wickelspulen (5, 6) einerseits in Zylinderstirnteilen (26, 28) und im Lagerungsteil (30) drehbar gelagert sind.Device according to claim 1,
characterized by
that the winding spools (5, 6) are rotatably mounted on the one hand in cylindrical end parts (26, 28) and in the bearing part (30). Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß die Zylinderstirnteile (26, 28) und das Lagerungsteil (30) mit Öffnungen zur Aufnahme der Umspulmechanik (4) versehen sind.Device according to claim 4,
characterized by
that the cylindrical end parts (26, 28) and the bearing part (30) are provided with openings for receiving the rewinding mechanism (4). Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß ein erstes (26) und ein zweites Zylinderstirnteil (28) des Druckformzylinders (1) mit integrierten Schmitzringen (32, 34) versehen sind.Device according to claim 4,
characterized by
that a first (26) and a second cylinder end part (28) of the printing form cylinder (1) are provided with integrated bearer rings (32, 34). Vorrichtung nach Anspruch 9,
dadurch gekennzeichnet,
daß Laufflächen (33, 35) der integrierten Schmitzringe (32, 34) beidseits der Mantelfläche (9) des Druckformzylinders (1) vorgesehen sind.Device according to claim 9,
characterized by
that running surfaces (33, 35) of the integrated bearer rings (32, 34) are provided on both sides of the lateral surface (9) of the printing form cylinder (1).
EP95116776A 1995-09-09 1995-10-25 Device for wrapping a flexible image carrier around a form cylinder Expired - Lifetime EP0761435B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19533442 1995-09-09
DE19533442 1995-09-09
DE19536884 1995-10-04
DE19536884A DE19536884C1 (en) 1995-09-09 1995-10-04 Twisting appts. of flexible printing image support body inside version trunk

Publications (2)

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EP0761435A1 true EP0761435A1 (en) 1997-03-12
EP0761435B1 EP0761435B1 (en) 1999-03-31

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AT (1) ATE178270T1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231652A (en) 1977-12-17 1980-11-04 Develop Kg Dr. Eisbein & Co. Drum for electrophotographic copier
DE4303872A1 (en) 1992-04-24 1993-10-28 Roland Man Druckmasch Printing machine with two rollers inside forme cylinder - which has single aperture in its jacket to inner pit contg. both rollers
DE4329125C1 (en) * 1993-08-30 1995-01-05 Heidelberger Druckmasch Ag Device for renewing a printing foil on the outer surface of a forme cylinder
DE29503401U1 (en) * 1994-09-15 1995-04-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Forme cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231652A (en) 1977-12-17 1980-11-04 Develop Kg Dr. Eisbein & Co. Drum for electrophotographic copier
DE4303872A1 (en) 1992-04-24 1993-10-28 Roland Man Druckmasch Printing machine with two rollers inside forme cylinder - which has single aperture in its jacket to inner pit contg. both rollers
DE4329125C1 (en) * 1993-08-30 1995-01-05 Heidelberger Druckmasch Ag Device for renewing a printing foil on the outer surface of a forme cylinder
DE29503401U1 (en) * 1994-09-15 1995-04-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Forme cylinder

Also Published As

Publication number Publication date
ATE178270T1 (en) 1999-04-15
EP0761435B1 (en) 1999-03-31

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