EP0827830B1 - Cylinder - Google Patents

Cylinder Download PDF

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Publication number
EP0827830B1
EP0827830B1 EP97114963A EP97114963A EP0827830B1 EP 0827830 B1 EP0827830 B1 EP 0827830B1 EP 97114963 A EP97114963 A EP 97114963A EP 97114963 A EP97114963 A EP 97114963A EP 0827830 B1 EP0827830 B1 EP 0827830B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
channel
slot
plate
pressure medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97114963A
Other languages
German (de)
French (fr)
Other versions
EP0827830A1 (en
Inventor
Helmut Puschnerat
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0827830A1 publication Critical patent/EP0827830A1/en
Application granted granted Critical
Publication of EP0827830B1 publication Critical patent/EP0827830B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/10Forme cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/12Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206Feeding to or removing from the forme cylinder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/60Devices for transferring printing plates
    • B41P2227/63Devices for removing printing plates

Definitions

  • the invention relates to a cylinder of a rotary printing press for lifting a plate according to the preamble of claim 1.
  • DE 43 03 381 A1 shows a plate cylinder with a device for lifting a printing plate by means of Compressed air. These are in a lateral surface of the Plate cylinder below the pressure plate to be lifted Openings attached, which can be pressurized with compressed air are.
  • a disadvantage of this plate cylinder is that openings arranged in the lateral surface Irregularities in the printed image can occur or the pressure-free zone is enlarged.
  • the invention has for its object a cylinder to create a plate.
  • the cylinder according to the invention is in the drawing shown and is described in more detail below.
  • a cylinder 1 of a rotary printing machine for receiving flexible plates 2 with bent ends 3, 4 with at least one narrow channel running parallel to its axis of rotation and extending from a lateral surface 6 of the cylinder 1 into its interior 7.
  • the plate 2 with a thickness d2, z. B. d2 0.3 mm, it is preferably printing plates, for. B. for planographic printing or letterpress printing (in particular flexographic printing, ie carrier plates with a plastic layer) or to carrier plates with z. B. rubber blankets attached to it.
  • the leading end 3 and trailing end 4 each have a bent leg 9, 11.
  • the channel is approximately rectangular in cross section, in the form of a Slot 12, formed.
  • At the The end of the slot 12 is parallel bore 16 in the cylinder 1 extending to the channel appropriate.
  • the slot 12 affects the Bore 16 in the form of a chord so that the bore 16 communicates with the slot 12.
  • This wave 17 is in axial direction with several radially outwards acting, sprung pressure pieces 18 provided.
  • the Thrust pieces 18 are fastened in the shaft 17 in such a way that whose pressure cam 19 over a lateral surface 21 of the shaft 17 can also act resiliently.
  • the pressure cams 19 are cylindrical designed so that for each pressure cam 19th results, for example, in a line-shaped contact zone. It it is also possible, for example, to apply the pressure cams 18 to be provided with a ball end at its outer end.
  • the channel is used to record the leading end 3 of the plate 2 from one to the opening angle alpha inclined side surface 22 and delimited by an opposite side surface 23.
  • the channel points rectangular cross-section and is therefore as Slot 12, which is additionally closed on the end face, executed.
  • the slot 12 is provided with a pressure medium supply.
  • this can consist of one or two one or both end faces of the cylinder 1 arranged bores 33 exist on which a Pressure medium source is connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Description

Die Erfindung betrifft einen Zylinder einer Rotationsdruckmaschine zum Anheben einer Platte gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a cylinder of a rotary printing press for lifting a plate according to the preamble of claim 1.

Die DE 43 03 381 A1 zeigt einen Plattenzylinder mit einer Einrichtung zum Anheben einer Druckplatte mittels Druckluft. Dazu sind in einer Mantelfläche des Plattenzylinders unterhalb der anzuhebenden Druckplatte Öffnungen angebracht, die mit Druckluft beaufschlagbar sind.DE 43 03 381 A1 shows a plate cylinder with a device for lifting a printing plate by means of Compressed air. These are in a lateral surface of the Plate cylinder below the pressure plate to be lifted Openings attached, which can be pressurized with compressed air are.

Nachteilig an diesem Plattenzylinder ist, daß durch die in der Mantelfläche angeordneten Öffnungen Unregelmäßigkeiten im Druckbild auftreten können bzw. die druckfreie Zone vergrößert wird.A disadvantage of this plate cylinder is that openings arranged in the lateral surface Irregularities in the printed image can occur or the pressure-free zone is enlarged.

Die DE 296 00 845 U1 beschreibt eine Vorrichtung zum Befestigen einer Platte auf einem Zylinder mittels einer schwenkbaren Welle. Diese Welle weist Blasbohrungen zum Lösen der Platte auf.DE 296 00 845 U1 describes a device for Attach a plate to a cylinder using a swiveling shaft. This shaft has blow holes Dissolve the plate.

Der Erfindung liegt die Aufgabe zugrunde, einen Zylinder zum Anheben einer Platte zu schaffen.The invention has for its object a cylinder to create a plate.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1 gelöst. This object is achieved by the features of the characterizing part of claim 1 solved.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß durch die Anordnung von Druckmittelzuführungen im Kanal eine druckfreie Zone nicht vergrößert wird. The advantages that can be achieved with the invention exist especially in that by the arrangement of Pressure medium supply in the channel a pressure-free zone is not enlarged.

Während des Abhebevorganges vergrößern sich öffnungen, aus denen beispielsweise Falschluft entweichen kann, nicht wesentlich, weshalb nur eine minimale Menge von Druckmittel benötigt wird. Deshalb können die Querschnitte der Leitungen zum Zuführen von Druckmittel klein gehalten werden.
In vorteilhafter Weise kann ein Ende der Platte vollständig aus dem Schlitz entfernt werden.
Zudem ist eine Zuführung des Druckmittels äußerst einfach ausgeführt.
During the lifting process, openings from which, for example, false air can escape do not enlarge significantly, which is why only a minimal amount of pressure medium is required. Therefore, the cross sections of the lines for supplying pressure medium can be kept small.
Advantageously, one end of the plate can be completely removed from the slot.
In addition, supply of the pressure medium is extremely simple.

Der erfindungsgemäße Zylinder ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.The cylinder according to the invention is in the drawing shown and is described in more detail below.

Es zeigt

Fig. 1
einen schematischen Schnitt durch den Zylinder.
It shows
Fig. 1
a schematic section through the cylinder.

Ein Zylinder 1 einer Rotationsdruckmaschine ist zur Aufnahme von biegsamen Platten 2 mit abgekanteten Enden 3, 4 mit mindestens einem parallel zu seiner Drehachse verlaufenden, sich von einer Mantelfläche 6 des Zylinders 1 in sein Inneres 7 erstreckenden, engen Kanal versehen.
Bei der Platte 2 mit einer Dicke d2, z. B. d2 = 0,3 mm, handelt es sich vorzugsweise um Druckplatten, z. B. für den Flachdruck oder Hochdruck (insbesondere Flexodruck, d.h. Trägerplatten mit Kunststoffschicht) oder um Trägerplatten mit z. B. darauf befestigten Gummitüchern. Das vorlaufende Ende 3 und nachlaufende Ende 4 weisen jeweils einen abgekanteten Schenkel 9, 11 auf.
A cylinder 1 of a rotary printing machine is provided for receiving flexible plates 2 with bent ends 3, 4 with at least one narrow channel running parallel to its axis of rotation and extending from a lateral surface 6 of the cylinder 1 into its interior 7.
In the plate 2 with a thickness d2, z. B. d2 = 0.3 mm, it is preferably printing plates, for. B. for planographic printing or letterpress printing (in particular flexographic printing, ie carrier plates with a plastic layer) or to carrier plates with z. B. rubber blankets attached to it. The leading end 3 and trailing end 4 each have a bent leg 9, 11.

Der Kanal ist im Querschnitt annähernd rechteckig, in Form eines Schlitzes 12, ausgebildet. Eine Breite b12 des Querschnittes des Schlitzes 12 weist an seinem Anfang 13 etwas mehr als die doppelte Dicke d2 der Platte 2 auf, d.h. beispielsweise b8 = 1 mm. Der der Schlitz 12 ist bezüglich einer an der Mantelfläche 6 im Bereich des Schlitzes 12 anliegenden Tangente 14 um einen Neigungswinkel Alpha, z. B. Alpha = 45°, geneigt. Am Ende des Schlitzes 12 ist eine parallel zu dem Kanal verlaufende Bohrung 16 in dem Zylinder 1 angebracht. Der Schlitz 12 tangiert die Bohrung 16 in Form einer Sehne, so daß die Bohrung 16 mit dem Schlitz 12 in Verbindung steht. In dieser Bohrung 16 ist ein Schwenkhebel 17, der im vorliegenden Ausführungsbeispiel als eine Welle 17 mit einem Radius r17, z. B. r17 = 15 mm, ausgeführt ist, schwenkbar zentrisch gelagert. Diese Welle 17 ist in axialer Richtung mit mehreren von radial nach außen wirkenden, gefederten Druckstücken 18 versehen. Die Druckstücke 18 sind so in der Welle 17 befestigt, daß deren Drucknocken 19 über eine Mantelfläche 21 der Welle 17 hinaus federnd wirken können. Im dargestellten Beispiel sind die Drucknocken 19 zylinderförmig ausgestaltet, so daß sich für jeden Drucknocken 19 beispielsweise eine linienförmige Berührzone ergibt. Es ist beispielsweise auch möglich, die Drucknocken 18 an ihrem äußeren Ende mit einer Kugelkuppe zu versehen.The channel is approximately rectangular in cross section, in the form of a Slot 12, formed. A width b12 of the cross section of the slot 12 has at its beginning 13 a little more than double Thickness d2 of plate 2, i.e. for example b8 = 1 mm. The slot 12 is relative one on the outer surface 6 in the area of Slot 12 adjacent tangent 14 to a Tilt angle alpha, e.g. B. Alpha = 45 °. At the The end of the slot 12 is parallel bore 16 in the cylinder 1 extending to the channel appropriate. The slot 12 affects the Bore 16 in the form of a chord so that the bore 16 communicates with the slot 12. In this bore 16 is a pivot lever 17 which in present embodiment as a shaft 17 with a radius r17, e.g. B. r17 = 15 mm. pivoted centrally. This wave 17 is in axial direction with several radially outwards acting, sprung pressure pieces 18 provided. The Thrust pieces 18 are fastened in the shaft 17 in such a way that whose pressure cam 19 over a lateral surface 21 of the shaft 17 can also act resiliently. In the illustrated For example, the pressure cams 19 are cylindrical designed so that for each pressure cam 19th results, for example, in a line-shaped contact zone. It it is also possible, for example, to apply the pressure cams 18 to be provided with a ball end at its outer end.

Der Kanal wird zur Aufnahme des vorlaufenden Endes 3 der Platte 2 von einer um den öffnungswinkel Alpha geneigten Seitenfläche 22 und von einer gegenüberliegenden Seitenfläche 23 begrenzt. The channel is used to record the leading end 3 of the plate 2 from one to the opening angle alpha inclined side surface 22 and delimited by an opposite side surface 23.

Der Kanal weist rechteckförmigen Querschnitt auf und ist somit als Schlitz 12, der zusätzlich stirnseitig geschlossen ist, ausgeführt. An seinem innen liegenden Ende 32 ist der Schlitz 12 mit einer Druckmittelzuführung versehen. Diese kann im einfachsten Fall aus einer oder zwei an einer oder beiden Stirnflächen des Zylinders 1 angeordneten Bohrungen 33 bestehen, an denen eine Druckmittelquelle angeschlossen wird.The channel points rectangular cross-section and is therefore as Slot 12, which is additionally closed on the end face, executed. At its inner end is 32 the slot 12 is provided with a pressure medium supply. In the simplest case, this can consist of one or two one or both end faces of the cylinder 1 arranged bores 33 exist on which a Pressure medium source is connected.

Claims (2)

  1. Cylinder (1) of a web-fed printing machine, having outlet openings (33) for supplying a pressure medium, in order to lift off a flexible plate (2) from a circumferential surface (6) of the cylinder (1), the ends (3; 4) of the plate (2) being arranged in a channel (12), the channel being bounded by two side surfaces (22; 23) and a shaft (17), and there being arranged at least one outlet opening which opens into the channel, characterized in that the channel is designed as a slot (12), and in that the outlet opening (33) is arranged on the end side on the cylinder (1) and outside the pivotable shaft (17).
  2. Cylinder (1) according to Claim 1, characterized in that at least one outlet opening for supplying pressure medium is arranged in the region of an inner end (32) of the slot (12).
EP97114963A 1996-09-07 1997-08-29 Cylinder Expired - Lifetime EP0827830B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19636412A DE19636412C1 (en) 1996-09-07 1996-09-07 Cylinder of rotary printer with outlets
DE19636412 1996-09-07

Publications (2)

Publication Number Publication Date
EP0827830A1 EP0827830A1 (en) 1998-03-11
EP0827830B1 true EP0827830B1 (en) 2000-07-12

Family

ID=7804944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114963A Expired - Lifetime EP0827830B1 (en) 1996-09-07 1997-08-29 Cylinder

Country Status (4)

Country Link
US (1) US5842419A (en)
EP (1) EP0827830B1 (en)
JP (1) JP2996936B2 (en)
DE (2) DE19636412C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008002048A1 (en) 2008-05-28 2009-12-10 Koenig & Bauer Aktiengesellschaft Cleaning system for cleaning e.g. plate cylinder of printing unit of printing machine, has cleaning unit for receiving contamination of printing element cylinders, and blowing device blowing contamination from printing element cylinders
DE102009000511A1 (en) 2009-01-30 2010-09-30 Koenig & Bauer Aktiengesellschaft Blanket cleaning system for blanket cylinder of double printing units of printing machine, has wiping device comprising collection trough and permanent revolving wiper that is attached at blanket cylinder

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19729375A1 (en) * 1997-07-09 1999-01-14 Ltg Lufttechnische Gmbh Device for fastening a flexible plate on the circumference of the cylinder of a painting machine
DE19815935A1 (en) * 1998-04-09 1999-10-14 Roland Man Druckmasch Impression cylinder
DE19924784C2 (en) * 1999-05-29 2001-05-31 Koenig & Bauer Ag Device for fastening flexible plates on a cylinder of a rotary printing machine with reversal of the direction of rotation
DE10108745C1 (en) * 2001-02-23 2002-05-23 Koenig & Bauer Ag Drive, for shaft to clamp or tension hoists on cylinder, has boring in cylinder for third shaft
DE102004059338B3 (en) * 2004-08-16 2005-12-22 Koenig & Bauer Ag Releasing process for tympan on printing press cylinder involves blowing compressed air at one end of tympan onto both its endfaces
US7618222B2 (en) * 2006-03-01 2009-11-17 Chi Hyun Kim Collated fastener strips with opposing wire connectors
DE102006048093A1 (en) * 2006-10-11 2008-04-17 Koenig & Bauer Aktiengesellschaft Rotary printing press i.e. sheet feed-offset rotary printing press, has generating unit to generate air stream that acts on moisture applying roller, where unit is attached to plate cylinder, such that stream is generated in channel
US8281716B2 (en) 2008-12-24 2012-10-09 Printing Research, Inc. Anti-marking jackets comprised of fluoropolymer and methods of using in offset printing
US8220388B2 (en) * 2008-12-24 2012-07-17 Printing Research, Inc. Multiple layer anti-marking jackets and methods of using in offset printing
US8578853B2 (en) * 2008-12-24 2013-11-12 Printing Research, Inc. Anti-marking jackets comprised of attachment structure and methods of using in offset printing
US8424453B2 (en) 2010-09-01 2013-04-23 Printing Research, Inc. Apparatus and method for adjusting anti-marking jackets
US8677899B2 (en) 2011-01-31 2014-03-25 Printing Research, Inc. Reversible anti-marking jackets and methods of using
KR20120130517A (en) * 2011-05-23 2012-12-03 삼성디스플레이 주식회사 Rubbing apparatus
US9346258B2 (en) 2012-05-02 2016-05-24 Printing Research, Inc. Method for cleaning anti-marking jackets

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600845U1 (en) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Device for fastening a covering on a printing unit cylinder

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE318702C (en) *
DE4203550C2 (en) * 1992-02-07 1995-07-13 Koenig & Bauer Ag Rotary feed for pressurizable media on rotatable bodies
DE4303381A1 (en) * 1993-02-05 1994-12-01 Roland Man Druckmasch Plate cylinder with a device for lifting a printing plate
US5335046A (en) * 1993-02-22 1994-08-02 Intergraph Corporation Clamping mechanism for use on a rotatable plotter drum
DE4326251C2 (en) * 1993-08-05 1997-08-28 Koenig & Bauer Albert Ag Rubber / blanket cylinder
DE9320691U1 (en) * 1993-11-30 1994-11-24 Koenig & Bauer AG, 97080 Würzburg Forme cylinder
FR2720975B1 (en) * 1994-06-08 1996-07-19 Martin Sa Device for hanging flexible plates on a printing cylinder.
DE4432817A1 (en) * 1994-09-15 1996-03-21 Roland Man Druckmasch Shaping cylinder for rotation printing machine
DE19509561C2 (en) * 1995-03-16 1997-10-23 Koenig & Bauer Albert Ag Device for clamping plates on a cylinder
JP2952752B2 (en) * 1995-11-17 1999-09-27 株式会社東京機械製作所 Device for fixing plate to plate cylinder and releasing from plate cylinder
US5687647A (en) * 1996-04-26 1997-11-18 Heidelberger Druckmaschinen Ag Plate cylinder with fixed tensioning plate mounting device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600845U1 (en) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Device for fastening a covering on a printing unit cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008002048A1 (en) 2008-05-28 2009-12-10 Koenig & Bauer Aktiengesellschaft Cleaning system for cleaning e.g. plate cylinder of printing unit of printing machine, has cleaning unit for receiving contamination of printing element cylinders, and blowing device blowing contamination from printing element cylinders
DE102008002048B4 (en) * 2008-05-28 2011-03-10 Koenig & Bauer Aktiengesellschaft Use of a cleaning system for cleaning one or more printing cylinder of a printing unit of a printing press
DE102009000511A1 (en) 2009-01-30 2010-09-30 Koenig & Bauer Aktiengesellschaft Blanket cleaning system for blanket cylinder of double printing units of printing machine, has wiping device comprising collection trough and permanent revolving wiper that is attached at blanket cylinder
DE102009000511B4 (en) * 2009-01-30 2011-02-24 Koenig & Bauer Aktiengesellschaft purifier

Also Published As

Publication number Publication date
EP0827830A1 (en) 1998-03-11
DE59701999D1 (en) 2000-08-17
US5842419A (en) 1998-12-01
DE19636412C1 (en) 1998-01-08
JP2996936B2 (en) 2000-01-11
JPH1086335A (en) 1998-04-07

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