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EP2011645A2 - Dispositif de support et d'ajustage d'un cylindre porte-forme dans une unité d'impression d'une presse rotative - Google Patents

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

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Publication number
EP2011645A2
EP2011645A2 EP08167472A EP08167472A EP2011645A2 EP 2011645 A2 EP2011645 A2 EP 2011645A2 EP 08167472 A EP08167472 A EP 08167472A EP 08167472 A EP08167472 A EP 08167472A EP 2011645 A2 EP2011645 A2 EP 2011645A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
printing
forme
forme cylinder
transfer
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Withdrawn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
EP08167472A
Other languages
German (de)
English (en)
Inventor
Karl Schaschek
Georg Schneider
Martin Schoeps
Kurt 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
Publication of EP2011645A2 publication Critical patent/EP2011645A2/fr
Withdrawn legal-status Critical Current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
    • B41F13/20Supports for bearings or supports for forme, offset, or impression cylinders
    • B41F13/21Bearer rings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/08Cylinders
    • B41F13/24Cylinder-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 claim 1.
  • a printing unit of a rotary printing machine for waterless offset printing wherein the printing unit has a forme cylinder, a transfer cylinder and an impression cylinder, wherein on the forme cylinder, a waterless printing form is arranged.
  • WO 02/24453 A1 By the WO 02/24453 A1 are known pressure units with a drive network and a clutch, wherein a pair consisting of a forme cylinder and a transfer cylinder forms a firmly coupled, driven by a common drive motor drive network, said drive network to create a large variety of operation and variability of the printing unit with high reliability through redundancy with a drive of a cooperating with the transfer cylinder satellite cylinder via a clutch selectively switchable with each other is mechanically coupled.
  • Basis of the variety in the modes of operation at the same time with little effort is the optional coupling of a fixed drive network of the cylinder pair with a counter-pressure cylinder.
  • a transfer cylinder and a counter-pressure cylinder wherein the transfer cylinder and the impression cylinder have cooperating support elements.
  • a normal force, ie contact pressure, between the support elements adjustable and an axial distance between the transfer cylinder and the impression cylinder is variable, wherein one of the two support elements bearing cylinder is mounted in eccentric bushings.
  • the bearer rings effect, by their support of the cylinder, which is in addition to the cylinder bearing, an attenuation of cylinder vibrations, which are excited during the rotation of the cylinders of channels, which are necessarily incorporated in the cylinders for supporting elevators.
  • DD-PS 113 187 a device for adjusting the contact pressure between cylinders of a rotary printing machine is known, wherein the means for the Plate cylinder adjustment is constructed analogous to that for the impression cylinder adjustment.
  • the document DE 41 42 791 A1 relates to a device for adjusting the pressure and Druckan- Druckabwolf in printing presses, which can be operated either with Schmitzring or without Schmitzring animation, the device during printing in SchmitzringCount and without SchmitzringCount a common, synchronous adjustment of several cylinders to each other in a setting allows.
  • a change in the pressure pressure between the rubber and impression cylinder of the plate cylinder is tracked to the blanket cylinder in such a way that regardless of the pressure gap between the rubber and impression cylinder, the distance between the plate cylinder and the blanket cylinder always remains the same.
  • the invention has for its object to provide a device in a printing unit of a rotary printing machine with a forme cylinder, a transfer cylinder and a counter-pressure cylinder.
  • the proposed embodiment of a printing unit has an advantageous effect, in particular, when the forme cylinder is coated with a silicone-coated printing plate. Because of the better adaptability of the contact pressure between the forme cylinder and the transfer cylinder, the durability of an applied on a forme cylinder printing form is increased, which is particularly true for a waterless offset printing, in which also by the proposed trackability of the contact pressure in the current printing process achievable with the printing plate Print quality is improved. Moreover eliminates the otherwise required lubrication and cleaning of arranged between the forme cylinder and the transfer cylinder bearer rings.
  • the single FIGURE shows a simplified representation of a printing unit with a form cylinder, a transfer cylinder and a counter-pressure cylinder.
  • a arranged in the printing unit printing point of a rotary printing machine is rotated by a cylinder 01, the z. B. is designed as a counter-pressure cylinder 01 and another cylinder 02, the z. B. is formed as a transfer cylinder 02 formed. Between these two cylinders 01; 02 is a substrate, z. B. a paper web (not shown).
  • These cylinders 01; 02 are at both ends of their bale 03; 04 each with a support member 06; 07, z. B. a bearer 06; 07 provided the bales 03; 04 each have a length L.
  • the Bearer rings 06; 07 adjacent cylinder 01; 02 roll in pairs.
  • the cylinders 01; 02 are with pin 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 form cylinder 21 associated with a rotation axis 22, wherein the rotation axis 22 of the forme cylinder 21 and the rotation axis 17 of the transfer cylinder 02 to each other have an adjustable and as required trackable axis distance a2.
  • the forme cylinder 21 may on its lateral surface 23 z. B. have four printing plates 26 to 29.
  • the printing plates 26 to 29 may, for. B. may be formed as printing plates, in particular as waterless planographic printing forms, which are placed on the lateral surface 23 and held in the form cylinder 21 introduced channels 24.
  • the assignment of the forme cylinder 21 may, for. B. such that in the circumferential direction in each case two printing plates 26 and 27 or 28 and 29 (the latter printing plate 29 is not shown, since it is in the illustration on the back of the forme cylinder 21) are arranged side by side, wherein the juxtaposed printing forms 26 and 27 and 28 and 29 are offset from each other by 90 °.
  • the transfer cylinder 02 has on its lateral surface 31 one or more blankets 32, which are also preferably held in one or more introduced into the lateral surface 31 channels 24 and optionally arranged offset on the circumference of the transfer cylinder 02.
  • the aforementioned pressure point can be arranged for example in a four-cylinder printing unit, in which the impression cylinder is also designed as a transfer cylinder, wherein this transfer cylinder another not shown form cylinder is assigned such that these two cylinders roll on each other.
  • This printing unit can also be expanded to a four-high tower. It is, however possible to use the above-described pressure points with a counter-pressure 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 operates in a planographic printing process and preferably uses a printing forme suitable for waterless offset printing ("dry offset").
  • dry offset printing refers to a printing unit without a dampening unit, d. H. in addition to the supply of ink, a supply of a fountain solution for the formation of non-printing areas is not required.
  • wet offset prevents the non-printing areas on the printing form from accepting printing ink
  • a printing forme suitable for waterless offset printing preferably has a support layer or a substrate which may be made of aluminum and has a suitable thickness in order to achieve the desired mechanical properties.
  • a color-accepting layer and overlying a color-repellent layer are applied.
  • the ink-receiving layer may be formed as a polyethylene film. Its thickness may be in the range of 5 to 50 microns, preferably it is about 20 microns.
  • the color-repellent layer consists z. B. silicone. Their thickness is suitably chosen. It can be in the range of a few microns, z. B. at about 2 microns.
  • the silicone layer takes over the role of the wettable hydrophilic area of the wet offset and prevents the printing form from absorbing ink.
  • an adhesive or primer layer e.g. As a titanium oxide layer.
  • the frictional heat generated by the contact pressure influences the behavior of the printing ink used in the printing process, in particular their fluidity and adhesion to the printing plate and ultimately on the substrate, and thus on the print quality, so setting and tracking of the contact pressure also taking into account these process parameters can be done.
  • the contact pressure between the forme cylinder 21 and the transfer cylinder 02 is adaptable in that the axial distance a2 between the forme cylinder 21 and the transfer cylinder 02 is variable.
  • the axial distance a2 thus has different values at different contact pressure, so that the forme cylinder 21 can be located at different positions in the printing process relative to the transfer cylinder 02.
  • This adaptation can then be carried out in a simple manner, when the forme cylinder 21 no cooperating with the transfer cylinder 02 support member 06; 07 has.
  • Such on the forme cylinder 21 attached support member 06; 07 would namely limit the adjustment options for the forme cylinder 21, but at least make it much more difficult.
  • the contact pressure between the forme cylinder 21 and the transfer cylinder 02 is by a change in their axial distance a2 preferably also in the current printing process, in particular remotely controlled by a printing machine associated control station, adjustable and one for the durability of the printing plates 26 to 29 and the print quality optimal contact pressure trackable.
  • the axis of rotation 22 of the forme cylinder 21 at least with an eccentric bushing 18; 19, a lever device or a linear drive is operatively connected, whereby the forme cylinder 21 against the transfer cylinder 02 is adjusted as needed.
  • an eccentric cylindrical bearing without bushes can also be used.
  • the support element 07 of the transfer cylinder 02 and the support member 06 of the impression cylinder 01 preferably arranged on each other unrollable, it is advantageous that the transfer cylinder 02 and the impression cylinder 01 z. B. by swiveling or by covering a path from each other are removable.
  • the counter-pressure cylinder 01 overlapping part of the side frames 13; 14 be designed movable from the other parts to z.
  • the setting of the axis 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 axis distance a2 and the corresponding contact pressure between the transfer cylinder 02 and the forme cylinder 21.
  • the impression cylinder 01 can also be used as a transfer cylinder may be formed and together with another form 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)
EP08167472A 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 Withdrawn EP2011645A2 (fr)

Applications Claiming Priority (2)

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
EP03706276A 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

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP03706276A Division 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

Publications (1)

Publication Number Publication Date
EP2011645A2 true EP2011645A2 (fr) 2009-01-07

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 After (1)

Application Number Title Priority Date Filing Date
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

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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD113187A1 (fr) 1974-07-02 1975-05-20
DE2802153A1 (de) 1978-01-19 1979-07-26 Maschf Augsburg Nuernberg Ag Schmitzringverbindung zwischen zwei druckwerkszylindern
DE2926570C2 (fr) 1979-06-30 1987-09-17 Koenig & Bauer Ag, 8700 Wuerzburg, De
DE4142791A1 (de) 1991-12-23 1993-06-24 Kba Planeta Ag Einrichtung zur einstellung der druckpressung sowie der druckan- und druckabstellung in druckmaschinen
EP0652104A1 (fr) 1993-11-05 1995-05-10 MAN Roland Druckmaschinen AG Unité d'impression pour impression offset sans eau de mouillage
US5487338A (en) 1992-07-20 1996-01-30 Presstek, Inc. Lithographic printing plates for use with laser-discharge imaging apparatus
DE19501243A1 (de) 1995-01-17 1996-07-18 Wifag Maschf Schmitzringlagerung für einen Zylinder einer Rotationsdruckmaschine
WO2000041887A1 (fr) 1999-01-18 2000-07-20 Koenig & Bauer Aktiengesellschaft Dispositif d'entrainement de cylindres
WO2002024453A1 (fr) 2000-09-20 2002-03-28 Koenig & Bauer Aktiengesellschaft Unites d'impression a ensemble d'entrainement et accouplement

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE113187C (fr) 1898-03-31
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
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
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
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

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD113187A1 (fr) 1974-07-02 1975-05-20
DE2802153A1 (de) 1978-01-19 1979-07-26 Maschf Augsburg Nuernberg Ag Schmitzringverbindung zwischen zwei druckwerkszylindern
DE2926570C2 (fr) 1979-06-30 1987-09-17 Koenig & Bauer Ag, 8700 Wuerzburg, De
DE4142791A1 (de) 1991-12-23 1993-06-24 Kba Planeta Ag Einrichtung zur einstellung der druckpressung sowie der druckan- und druckabstellung in druckmaschinen
US5487338A (en) 1992-07-20 1996-01-30 Presstek, Inc. Lithographic printing plates for use with laser-discharge imaging apparatus
EP0652104A1 (fr) 1993-11-05 1995-05-10 MAN Roland Druckmaschinen AG Unité d'impression pour impression offset sans eau de mouillage
DE19501243A1 (de) 1995-01-17 1996-07-18 Wifag Maschf Schmitzringlagerung für einen Zylinder einer Rotationsdruckmaschine
WO2000041887A1 (fr) 1999-01-18 2000-07-20 Koenig & Bauer Aktiengesellschaft Dispositif d'entrainement de cylindres
WO2002024453A1 (fr) 2000-09-20 2002-03-28 Koenig & Bauer Aktiengesellschaft Unites d'impression a ensemble d'entrainement et accouplement

Also Published As

Publication number Publication date
DE10228242B4 (de) 2004-09-16
WO2004000557A1 (fr) 2003-12-31
US7392742B2 (en) 2008-07-01
DE10228242A1 (de) 2004-01-29
AU2003208278A1 (en) 2004-01-06
US20050223921A1 (en) 2005-10-13
EP1515850A1 (fr) 2005-03-23

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