EP1515850A1 - Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unite d'impression d'une presse rotative - Google Patents

Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unite d'impression d'une presse rotative

Info

Publication number
EP1515850A1
EP1515850A1 EP03706276A EP03706276A EP1515850A1 EP 1515850 A1 EP1515850 A1 EP 1515850A1 EP 03706276 A EP03706276 A EP 03706276A EP 03706276 A EP03706276 A EP 03706276A EP 1515850 A1 EP1515850 A1 EP 1515850A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
printing
forme
forme cylinder
transfer cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03706276A
Other languages
German (de)
English (en)
Inventor
Karl Erich Albert Schaschek
Georg Schneider
Martin Heinz Schoeps
Kurt Johannes Weschenfelder
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
Priority to EP08167472A priority Critical patent/EP2011645A2/fr
Publication of EP1515850A1 publication Critical patent/EP1515850A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B41F13/21—Bearer rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments

Definitions

  • the invention relates to a device in a printing unit of a rotary printing press with a forme cylinder, a transfer cylinder and an impression cylinder according to the preamble of claims 1 or 4.
  • A1 cylinders of a rotary printing press with so-called bearer rings are known, the bearer rings of adjacent cylinders being mutually supported.
  • Bearings are support elements designed as races, which are arranged on the journals of cylinders and support the two ends of a cylinder in order to reduce unwanted cylinder vibrations and thus enable clean pressure despite channel blows, the diameters of the bearer rings being dimensioned so that the Rolling together the bearer rings attached, adjacent cylinders.
  • a bearer ring arrangement With a bearer ring arrangement, a defined axis distance between two printing unit cylinders of a rotary printing unit is also achieved.
  • the document DE 41 42 791 A1 relates to a device for setting the printing pressure as well as the pressure on and off in printing machines, which can be operated either with a bearer ring or without bearer ring contact, the device having a common, synchronous while pressing in the bearer ring contact as well as without bearer ring contact Adjustment of several cylinders to each other in one adjustment process.
  • the plate cylinder is adjusted to the rubber cylinder in such a way that the axial distance between the plate cylinder and the rubber cylinder always remains the same regardless of the pressure gap between the rubber and pressure cylinders.
  • the invention has for its object to provide a device in a printing unit of a rotary printing press with a form cylinder, a transfer cylinder and an impression cylinder.
  • the support elements are necessary because tension channels formed on the transfer cylinder represent the main cause of the so-called channel runout. Therefore, the transfer cylinder should remain supported to increase its smoothness.
  • the proposed design of a printing unit is particularly advantageous when the forme cylinder is coated with a silicone-coated printing form. Because of the better adaptability of the contact pressure between the forme cylinder and the transfer cylinder, the durability of a printing form applied to a form cylinder is increased, which is particularly true for waterless offset printing, in which, in addition, the suggested reproducibility of the contact pressure means that the printing form can also be achieved in the running printing process Print quality is improved. In addition, the otherwise necessary lubrication and cleaning of the bearer rings arranged between the forme cylinder and the transfer cylinder is eliminated.
  • the single figure shows a simplified representation of a printing unit with a forme cylinder, a transfer cylinder and an impression cylinder.
  • a arranged in the printing unit printing point of a rotary printing press is by a cylinder 01, the z. B. is formed as an impression cylinder 01 and another cylinder 02, the z. B. is formed as a transfer cylinder 02, formed. Between these two cylinders 01; 02 becomes a substrate, e.g. B. guided a paper web (not shown).
  • This cylinder 01; 02 are on both Ends of their bales 03; 04 each with a support element 06; 07, e.g. B. a bearer ring 06; 07 provided, the bales 03; 04 each have a length L.
  • the bearer rings 06; 07 adjacent cylinder 01; 02 roll on each other in pairs.
  • the cylinders 01; 02 are with tenon 08; 09 provided by means of bearings 11; 12 in side frames 13; 14 are stored.
  • the transfer cylinder 02 is at least one also in the side frames 13; 14 preferably in eccentric bushings 18; 19 mounted forme cylinder 21 assigned with a rotation axis 22, the rotation axis 22 of the forme cylinder 21 and the rotation axis 17 of the transfer cylinder 02 having an adjustable and traceable axis distance a2 to each other.
  • the form cylinder 21 can on its outer surface 23 z. B. have four printing forms 26 to 29.
  • the printing forms 26 to 29 can, for. B. be designed as printing plates, in particular as waterless planographic printing plates, which are placed on the outer surface 23 and held in the forme cylinder 21 channels 24.
  • the assignment of the forme cylinder 21 can, for. B. in such a way that in each case two printing forms 26 and 27 or 28 and 29 (the latter printing form 29 is not shown, since this is located on the back of the forme cylinder 21 in the illustration) are arranged side by side, the printing forms arranged side by side 26 and 27 or 28 and 29 are each offset by 90 °.
  • the transfer cylinder 02 has on its outer surface 31 one or more printing blankets 32, which are likewise preferably held in one or more channels 24 introduced into the outer surface 31 and are optionally arranged offset on the circumference of the transfer cylinder 02.
  • the aforementioned printing point can be arranged, for example, in a four-cylinder printing unit, in which the impression cylinder is also designed as a transfer cylinder, with this transfer cylinder being another one, not shown Forme cylinder is assigned such that these two cylinders roll on each other.
  • This printing unit can also be expanded into a four-high tower.
  • it is also possible to use the previously described printing points with an impression cylinder for example in a five-cylinder printing unit, a ten-cylinder printing unit consisting of two five-cylinder printing units, or a nine-cylinder printing unit.
  • the printing unit described here works in a planographic printing process and preferably uses a printing form suitable for waterless offset printing (“dry offset”).
  • dry offset printing denotes a printing unit without a dampening unit, ie. H. in addition to the supply of printing ink, a supply of a dampening solution is not necessary for the formation of non-printing areas.
  • waterless offset printing there is no need to apply a moisture film to the printing form, which otherwise prevents the non-printing areas on the printing form from accepting ink in the so-called "wet offset”.
  • this is achieved by using special printing inks and a special design of the surface of the printing form ,
  • a printing form suitable for waterless offset printing preferably has a carrier layer or a substrate which can consist of aluminum and has a suitable thickness in order to achieve the desired mechanical properties.
  • An ink-accepting layer and an ink-repellent layer are applied to it.
  • the ink-accepting layer can be formed as a film made of polyethylene. Their thickness can be in the range from 5 to 50 ⁇ m, preferably it is approximately 20 ⁇ m.
  • the color-repellent layer consists, for. B. made of silicone. Their thickness is chosen appropriately. It can be in the range of a few ⁇ m, e.g. B. at about 2 microns.
  • the silicone layer takes on the role of the hydrophilic area of the wet offset, which can be covered with a dampening solution, and prevents the printing form from absorbing color.
  • a printing form from Presstek (PearlDry) suitable for waterless offset printing is described in US 5487 338 A.
  • the adaptability takes place here in particular with regard to the property of the printing form's compressive strength, but it can also be based on the temperature resistance or the surface hardness, in particular the scratch resistance and thus the wear resistance of the printing form. Furthermore, the frictional heat generated by the contact pressure influences the behavior of the printing ink used in the printing process, in particular its fluidity and adhesion on the printing form and ultimately on the printing material, and thus on the print quality, so that an adjustment and adjustment of the contact pressure also taking these process parameters into account can be done.
  • some may Applications may be appropriate to temper the forme cylinder 21 in addition to the measures described, in that a tempering medium flows through at least one cooling duct arranged in the forme cylinder 21, preferably a plurality of such cooling ducts, the at least one cooling duct preferably being arranged closely below the lateral surface 23 of the forme cylinder 21.
  • the contact pressure between the forme cylinder 21 and the transfer cylinder 02 can be adjusted by changing the center distance a2 between the forme cylinder 21 and the transfer cylinder 02.
  • the axis spacing a2 thus has different values with different contact pressure, so that the forme cylinder 21 can be in different positions in the printing process compared to the transfer cylinder 02.
  • This adjustment can then be carried out in a simple manner if the forme cylinder 21 does not have a support element 06; 07 has.
  • Such a support element 06; 07 would limit the setting options for the forme cylinder 21, or at least make it considerably more difficult.
  • support elements 06; 07 arranged, e.g. B.
  • the contact pressure between the forme cylinder 21 and the transfer cylinder 02 can be adjusted by changing its axis spacing a2, preferably also in the running printing process, in particular remotely from a control station assigned to the printing press, and with regard to the durability of the printing formes 26 to 29 and the print quality optimal contact pressure.
  • the axis of rotation 22 of the forme cylinder 21 has at least one eccentric bushing 18; 19, a lever device or a linear drive is in operative connection, whereby the forme cylinder 21 can be adjusted against the transfer cylinder 02 as required.
  • the eccentric bushing 18; 19 can also be a eccentric cylinder bearings without bushings are used.
  • the support element 07 of the transfer cylinder 02 and the support element 06 of the impression cylinder 01 preferably remain arranged such that they can be unrolled. It is advantageous that the transfer cylinder 02 and the impression cylinder 01 e.g. B. can be removed from one another by pivoting or by covering a travel path.
  • the part of the side frames 13; 14 of the remaining parts can be designed to be movable, for. B. a web of printing material, e.g. B. a paper web between the jerk cylinder 01 and the transfer cylinder 02 to perform.
  • the setting of the center distance a1 and thus the contact pressure between the impression cylinder 01 and the transfer cylinder 02 is thus independent of the setting of the center distance a2 and the corresponding contact pressure between the transfer cylinder 02 and the forme cylinder 21.
  • the back pressure cylinder 01 can also be used as a transfer cylinder can be formed and together with another forme cylinder form a further pressure point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

L'invention concerne un dispositif de support et d'ajustage d'un cylindre porte-forme dans une unité d'impression d'une presse rotative comprenant un cylindre de transfert (02) ainsi qu'un cylindre à contre-pression (01). Selon l'invention, ce cylindre de transfert et ce cylindre à contre-pression comprennent des éléments de support (06, 07) coopérant les uns avec les autres. Ledit dispositif est caractérisé en ce que le cylindre porte-forme (21) ne comporte pas d'élément de support coopérant avec le cylindre de transfert. En outre, le cylindre porte-forme se situe à une distance axiale ajustable du cylindre de transfert, qui peut de préférence également être réajustée au cours du processus d'impression pour réguler une pression de contact entre le cylindre porte-forme et le cylindre de transfert. Cette invention se rapporte en particulier à une unité d'impression dont le cylindre porte-forme est équipé d'une forme d'impression sans mouillage, la pression de contact entre ce cylindre porte-forme et le cylindre de transfert pouvant être adaptée à une propriété de cette forme d'impression sans mouillage, à savoir à sa capacité de résistance aux pressions.
EP03706276A 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unite d'impression d'une presse rotative Withdrawn EP1515850A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08167472A EP2011645A2 (fr) 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unité d'impression d'une presse rotative

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10228242A DE10228242B4 (de) 2002-06-25 2002-06-25 Druckwerk einer im wasserlosen Offsetdruck arbeitenden Rotationsdruckmaschine mit zwei Druckstellen
DE10228242 2002-06-25
PCT/DE2003/000270 WO2004000557A1 (fr) 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unite d'impression d'une presse rotative

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08167472A Division EP2011645A2 (fr) 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unité d'impression d'une presse rotative

Publications (1)

Publication Number Publication Date
EP1515850A1 true EP1515850A1 (fr) 2005-03-23

Family

ID=29795868

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08167472A Withdrawn EP2011645A2 (fr) 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unité d'impression d'une presse rotative
EP03706276A Withdrawn EP1515850A1 (fr) 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unite d'impression d'une presse rotative

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08167472A Withdrawn EP2011645A2 (fr) 2002-06-25 2003-01-31 Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unité d'impression d'une presse rotative

Country Status (5)

Country Link
US (1) US7392742B2 (fr)
EP (2) EP2011645A2 (fr)
AU (1) AU2003208278A1 (fr)
DE (1) DE10228242B4 (fr)
WO (1) WO2004000557A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031029A1 (de) * 2004-06-26 2006-01-19 Man Roland Druckmaschinen Ag Druckeinheit einer Rollenrotationsdruckmaschine
DE102005014255A1 (de) * 2005-03-30 2006-10-05 Koenig & Bauer Ag Lagerung von Walzen und/oder Zylindern in Druckwerken von Rotationsdruckmaschinen
DE102007010481B4 (de) * 2007-03-03 2018-12-20 Koenig & Bauer Ag Bogenrotationsdruckmaschine
DE102007015347A1 (de) 2007-03-30 2008-10-02 Koenig & Bauer Aktiengesellschaft Verfahren zur Verminderung von Schwingungen in bogenverarbeitenden Rotationsdruckmaschinen
US9174428B2 (en) * 2009-08-10 2015-11-03 Corning Incorporated Roll mechanics for enabling printed electronics

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE113187C (fr) 1898-03-31
DD113187A1 (fr) * 1974-07-02 1975-05-20
DE2802153C2 (de) 1978-01-19 1986-08-07 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Schmitzringanordnung
DE2805153B2 (de) 1978-02-08 1980-08-28 Gebr. Dennert, 8602 Viereth Hydrothermalgehärteter Lochstein aus Kalk und kieselsäurehaltigem überwiegend amorphem Leichtzuschlag und ein Verfahren zu dessen Herstellung
DE2926570A1 (de) 1979-06-30 1981-01-22 Koenig & Bauer Ag Anordnung zum gegenseitigen abstuetzen von miteinander in beruehrung stehenden zylindern eines druckwerkes
US4426897A (en) * 1981-07-13 1984-01-24 Littleton Francis J Thermal adjustment method and apparatus for rotating machines
CA2043297A1 (fr) * 1990-11-28 1992-05-29 Francis J. Littleton Controle de la nettete d'impression d'une machine a imprimer
DE4142791C2 (de) * 1991-12-23 2002-07-18 Koenig & Bauer Ag Vorrichtung zur Einstellung der Druckpressung sowie der Druckan- und Druckabstellung in Druckmaschinen
AU674518B2 (en) * 1992-07-20 1997-01-02 Presstek, Inc. Lithographic printing plates for use with laser-discharge imaging apparatus
EP0652104B1 (fr) 1993-11-05 2002-04-10 MAN Roland Druckmaschinen AG Unité d'impression pour impression offset sans eau de mouillage
DE19501243C5 (de) 1995-01-17 2004-01-29 Maschinenfabrik Wifag Schmitzringlagerung für einen Zylinder einer Rotationsdruckmaschine
DE19805898C2 (de) * 1998-02-13 2003-09-18 Roland Man Druckmasch Druckwerk für eine Rollenrotationsdruckmaschine
DE19833468C2 (de) * 1998-07-24 2000-05-18 Koenig & Bauer Ag Druckwerke
US6227111B1 (en) * 1998-10-21 2001-05-08 Heidelberger Druckmaschinen Ag Impression setting mechanism for a printing unit
EP1442879A2 (fr) 1999-01-18 2004-08-04 Koenig & Bauer Aktiengesellschaft Entraínement de cylindres d'une machine rotative d'impression
DE19956949C2 (de) * 1999-11-26 2003-05-28 Koenig & Bauer Ag Lagerung eines Formzylinders einer Rotationsdruckmaschine
DE10035787C2 (de) * 2000-07-22 2002-05-16 Koenig & Bauer Ag Verfahren zur Regelung einer Bahnspannung
DE10046376C2 (de) 2000-09-20 2002-12-12 Koenig & Bauer Ag Antrieb einer Druckeinheit

Non-Patent Citations (1)

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Title
See references of WO2004000557A1 *

Also Published As

Publication number Publication date
WO2004000557A1 (fr) 2003-12-31
US20050223921A1 (en) 2005-10-13
AU2003208278A1 (en) 2004-01-06
US7392742B2 (en) 2008-07-01
DE10228242B4 (de) 2004-09-16
DE10228242A1 (de) 2004-01-29
EP2011645A2 (fr) 2009-01-07

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