EP0182156A2 - Machine d'impression offset - Google Patents

Machine d'impression offset Download PDF

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Publication number
EP0182156A2
EP0182156A2 EP85113793A EP85113793A EP0182156A2 EP 0182156 A2 EP0182156 A2 EP 0182156A2 EP 85113793 A EP85113793 A EP 85113793A EP 85113793 A EP85113793 A EP 85113793A EP 0182156 A2 EP0182156 A2 EP 0182156A2
Authority
EP
European Patent Office
Prior art keywords
blanket
cylinder
rubber
printing machine
rubber blanket
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
EP85113793A
Other languages
German (de)
English (en)
Other versions
EP0182156B1 (fr
EP0182156B2 (fr
EP0182156A3 (en
Inventor
Detlef Dipl.-Ing. Stork
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
Albert Frankenthal AG
Koenig and Bauer Albert AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6250019&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0182156(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Albert Frankenthal AG, Koenig and Bauer Albert AG filed Critical Albert Frankenthal AG
Publication of EP0182156A2 publication Critical patent/EP0182156A2/fr
Publication of EP0182156A3 publication Critical patent/EP0182156A3/de
Publication of EP0182156B1 publication Critical patent/EP0182156B1/fr
Application granted granted Critical
Publication of EP0182156B2 publication Critical patent/EP0182156B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders

Definitions

  • the invention relates to an offset printing machine, in particular a web-fed rotary offset printing machine, with at least one plate cylinder, which is provided on the circumference with a plate tensioning device containing a cylinder pit, and with at least one blanket cylinder, which is provided with a blanket tensioning device containing a tensioning channel on the circumference, and the scope of its work with a blanket placed on it corresponds to a whole multiple of the scope of work of the plate cylinder covered with printing plates.
  • Arrangements of this type are used above all where a very slim plate cylinder with a comparatively short circumference is required.
  • cylinders of this type have only a comparatively low stability. Due to the multiple circumference of the blanket cylinder, however, the stability of the overall arrangement can be increased here in such a way that deflections and vibrations caused by the pressing forces required for printing are largely avoided.
  • the plate cylinder unwinds several times with each revolution of the rubber cylinder, so that the rubber cylinder receives the same color application several times per revolution and several copies are printed per revolution of the rubber cylinder. It has been shown that these copies do not have the same print quality.
  • the blanket cylinder with a plurality of clamping channels on the circumference and to cover it with a plurality of blankets each comprising a circumferential section assigned to a development of the plate cylinder.
  • different printing qualities result in the area of the successive circumferential sections of the blanket cylinder.
  • Another disadvantage of such an arrangement would be seen in the fact that after one of the rubber blankets has worn out, the other rubber blanket or the other rubber blankets would inevitably have to be replaced in order to at least approximate the same conditions.
  • Another disadvantage would be the fact that in the case of several blankets, several tensioning devices would also be required. An arrangement of this type would therefore prove to be not easy, user-friendly and reliable enough, and would therefore prove to be uneconomical.
  • An advantageous embodiment of the higher-level measures can consist in that in each area offset by a plate cylinder circumference or a whole multiple thereof with respect to the tensioning channel of the rubber cylinder, a device designed to take back the course of the radially outer surface of the rubber blanket clamped onto the rubber cylinder relative to a circular contour, to relieve the rubber blanket of the contact pressure exerted by the plate cylinder is provided.
  • the contact pressure in the areas concerned is practically largely reduced, so that when these areas pass through, the mutual area of contact between the blanket cylinder and plate cylinder in the blanket allows the same tension compensation to take place as in the passage of the tensioning channel .
  • the measures according to the invention thus advantageously result in a simulation of a tensioning channel with regard to the possibility of tension compensation in the rubber blanket, so that practically the same tension ratios in the rubber blanket can be expected each time the plate cylinder is processed on the rubber blanket, which is advantageous due to the expected print quality of the individual on the circumference copies of the rubber blanket affects. Since the tension compensation takes place here by means of measures on the rubber cylinder side, the opening cross section of the cylinder pit on the plate cylinder side can advantageously be kept as small as possible, which has an advantageous effect on paper consumption and the cylinder stability that can be achieved.
  • the device for relieving the rubber blanket can be designed as a withdrawal of the circumferential contour of the steel jacket of the rubber cylinder spanned by the rubber blanket with respect to a circular contour.
  • Another advantageous embodiment of the superordinate measures can consist in that the device for relieving the rubber blanket is designed as a recess in the rubber blanket. In this case, advantageously, no change in the cylinder construction is required, so that this embodiment can also be used with existing machines.
  • a further advantageous embodiment of the superordinate measures can consist in the device for relieving the rubber blanket being designed as a recess or interruption of the pad.
  • An arrangement of this type can advantageously be produced in any printing house, since the base usually consists of cardboard which can easily be cut to size in the desired manner.
  • the double printing unit on which FIG. 1 is based consists of two rubber cylinders 1 which are in contact with one another and have the same diameter and thus the same circumference, to which an associated, slender plate cylinder 2 is positioned.
  • the circumferences of the blanket cylinder 1 and plate cylinder 2 are matched to one another here in such a way that the plate cylinders 2 unwind twice on the associated blanket cylinder 1 with each revolution.
  • the plate cylinders 2 are covered with pressure plates 4 which run around their entire circumference and whose ends are suspended from a clamping device arranged in the area of a cylinder pit 5.
  • the plate clamping device can consist of flaps arranged movably in the cylinder pit 5 or simply of slits or the like which are inclined at an angle to one another.
  • the rubber cylinders 1 are each covered with a rubber blanket 6 running around their entire circumference, at the ends of which a rubber blanket tensioning device arranged in an associated tensioning channel 7 engages.
  • the blanket tension direction can consist in a known manner from arranged in the clamping channel 7 rotatable spindles or the like.
  • the rubber cylinders 1 each have a rubber blanket relief device 9 offset by 180 ° relative to their tensioning channel 7, when the rubber blanket 6 is relieved when it passes through the contact area between the rubber cylinder and the associated plate cylinder 2.
  • the tensioning channel 7 and the rubber blanket relief device 9 meet in the area of contact between the rubber cylinder 1 and the associated Paltten cylinder 2 with its cylinder pit 5.
  • the rubber blanket 6 is therefore relieved each time the cylinder pit 5 passes through the contact area, so that with each development of the plate cylinder 2 on the associated blanket cylinder 1, the same tension conditions are present in the blanket 6, as indicated in FIG. 1 above with the aid of the spiral lines 10 which illustrate the build-up of tension.
  • the build-up of tension in the rubber blanket 6 between two relief processes can be represented by a spiral line of the type indicated at 10.
  • the spiral lines 10 each encompass half the circumference of the rubber cylinder, each starting from the tension channel 7 to the relief device 9 or starting from this to the tension channel 7.
  • the radially outer circumference of the rubber cylinder 1 covered with the rubber blanket 6 is so far reduced with respect to a circular contour that when the relevant peripheral section, which is here offset by 180 ° relative to the tensioning channel 7, passes through the contact area between the rubber cylinder 1 and assigned plate cylinder 2, the mutual contact pressure between these two cylinders is reduced to such an extent that a complete tension compensation can take place in the rubber blanket 6, regardless of the width of the opening cross section of the cylinder pit 5 on the plate cylinder side.
  • the cylinder pit 5 can therefore have a very narrow opening cross section, which is has a positive effect on paper consumption.
  • the relief device 9 can in the steel structure of the Rubber cylinder 1 can be integrated.
  • the rubber cylinder 1 generally consists, as can be seen in FIG. 2, of a steel jacket 11 which receives the rubber blanket 6.
  • the steel jacket 11 for forming the relief device in the region offset by 180 ° from the tensioning channel 7 is provided with a groove-shaped recess 9a parallel to the tensioning channel and extending over the entire length of the cylinder, which is spanned by the rubber blanket 6.
  • the depth of the groove-shaped recess 9a can be significantly less than the depth of the tensioning channel 7.
  • a groove depth of the order of one or a few millimeters is sufficient to achieve the desired blanket relief.
  • the rubber blanket 6 is supported by a support 12 resting on the circumference of the steel jacket 11.
  • the underlay 12 can consist of arc-shaped cardboard.
  • the pad 12 is provided in the present case in the area opposite the tensioning channel 7 with an interruption 9b, which also ensures that the rubber blanket 6 is practically support-free in this area and therefore when passing through the contact area between the rubber cylinder 1 and assigned plate cylinder 2 can give way radially inward so that a tension compensation can take place.
  • the base 12 consists of two cardboard sheets which are spaced from one another in the region of the interruption 9b and are each assigned to a cylinder circumferential half and which are fixed on the cylinder side with their front end in the direction of rotation.
  • the one bow can be fixed with its front end together with the rubber sheet 6 in the region of the tension channel 7.
  • An insertion slot 13 in the steel jacket 11, which limits the interruption 9b, is assigned to the front end of the other sheet of the base 12. This ensures that when separate sheets are used to form the base 12, these separate sheets cannot slip.
  • the steel jacket 11 of the rubber cylinder 1 is provided with a circumferential flattening 9c offset in the desired manner in relation to the tensioning channel 7 in order to form the relief device.
  • the circumferential flattening is so deep that when it coincides with the passage of the plate cylinder side cylinder pit 5 through the mutual contact area between the blanket cylinder 1 and the associated plate cylinder 2, the mutual pressure decreases to such an extent that a complete tension compensation can take place in the rubber blanket 6.
  • the flattened portion 9c can be ground or milled.
  • the relief device itself is moved into the area of the rubber blanket 6.
  • the rubber blanket 6 is provided with a circumferential recess 9d.
  • the depth of the recess 9d includes only the compressible area of the rubber blanket 6.
  • the fabric 14 provided in the area of the lower base layer remains unaffected by this, which has an advantageous effect on the attainable load-bearing capacity.
  • the edges of the recess 9d are appropriately slightly rounded.
  • the side flanks of the recess 9d are inclined toward one another in a V-shape. These measures can prevent the base layer of the rubber blanket 6 from being torn out in the region of the recess 9d.
  • the recess 9d also ensures the desired tension compensation when passing through the mutual contact area between the blanket cylinder 1 and the associated plate cylinder 2.
  • the groove-shaped recess 9a according to FIG. 2 or strip-shaped interruption 9b according to FIG. 3 or flattening 9c according to FIG. 4 or recess 9d according to FIG. 5 provided to form the relief device 9 are each arranged parallel to the tensioning channel 7 and extend over the entire cylinder length.
  • the width and depth can correspond to the width and depth of the tensioning channel 7. As a rule, however, a smaller width and depth are sufficient to simulate a tension channel with regard to the tension conditions in the rubber blanket 6 and thus bring about tension compensation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
EP85113793A 1984-11-10 1985-10-30 Machine d'impression offset Expired - Lifetime EP0182156B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3441175 1984-11-10
DE3441175A DE3441175C2 (de) 1984-11-10 1984-11-10 Gummituchzylinder für eine Offsetdruckmaschine

Publications (4)

Publication Number Publication Date
EP0182156A2 true EP0182156A2 (fr) 1986-05-28
EP0182156A3 EP0182156A3 (en) 1988-01-20
EP0182156B1 EP0182156B1 (fr) 1991-04-03
EP0182156B2 EP0182156B2 (fr) 1996-07-03

Family

ID=6250019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113793A Expired - Lifetime EP0182156B2 (fr) 1984-11-10 1985-10-30 Machine d'impression offset

Country Status (2)

Country Link
EP (1) EP0182156B2 (fr)
DE (2) DE3441175C2 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194617A2 (fr) * 1985-03-14 1986-09-17 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Elément d'impression pour une rotative offset
EP0933200A1 (fr) * 1998-01-31 1999-08-04 MAN Roland Druckmaschinen AG Dispositif pour imprimer offset
DE10016409A1 (de) * 1999-12-02 2001-06-07 Koenig & Bauer Ag Zylinder einer Rotationsdruckmaschine
DE102005005302A1 (de) * 2005-02-04 2006-08-10 Koenig & Bauer Ag Druckwerk einer Druckmaschine
EP1707355A2 (fr) * 2003-12-16 2006-10-04 Koenig & Bauer Aktiengesellschaft Unité d'impression d'une machine d'impression sans dispositif de mouillage
EP1832419A2 (fr) * 2006-03-07 2007-09-12 WIFAG Maschinenfabrik AG Elément d'atténuation de contraintes
CN100482476C (zh) * 2003-12-16 2009-04-29 柯尼格及包尔公开股份有限公司 具有形状稳定托板的橡皮布及制法以及印刷机的印刷装置
KR101234918B1 (ko) * 2010-03-17 2013-02-19 에이치티씨 코포레이션 네트워크 개시 접속 해제 절차를 처리하는 장치 및 방법
US8904931B2 (en) 2003-11-10 2014-12-09 Day International, Inc. Printing blanket construction and method of making
EP2829402A3 (fr) * 2013-07-26 2015-09-02 manroland web systems GmbH Unité d'impression offset et habillage pour le blanchet
JP2016132148A (ja) * 2015-01-19 2016-07-25 西研グラフィックス株式会社 ブランケット胴の製造方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958133C2 (de) * 1999-12-02 2003-03-06 Koenig & Bauer Ag Druckeinheit
DE19740475A1 (de) * 1997-09-15 1999-03-18 Roland Man Druckmasch Druckende Zylinder in einer Rollenrotationsdruckmaschine mit zueinander versetzten Spannkanälen
DE10066162B4 (de) * 1999-12-02 2004-08-19 Koenig & Bauer Ag Druckwerk einer Rotationsdruckmaschine
DE20023364U1 (de) 1999-12-02 2003-11-20 Koenig & Bauer AG, 97080 Würzburg Druckwerke einer Rotationsdruckmaschine
EP1782950A3 (fr) * 2001-04-09 2007-12-19 Koenig & Bauer Aktiengesellschaft Imprimé d'une presse comprenant des guidages linéaires
DE10250690B4 (de) * 2002-10-31 2006-03-02 Koenig & Bauer Ag Rotationskörper einer Druckmaschine mit einem Ballen
DE102006027142B3 (de) * 2006-06-12 2007-05-24 Koenig & Bauer Ag Drucktucheinheit für einen Drucktuchzylinder einer Rotationsdruckmaschine
DE102006044979A1 (de) * 2006-09-23 2008-04-10 Man Roland Druckmaschinen Ag Druckwerk einer Druckmaschine
DE102007010481B4 (de) 2007-03-03 2018-12-20 Koenig & Bauer Ag Bogenrotationsdruckmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE256705C (fr) *
CH450460A (de) * 1965-08-13 1968-01-31 Miehle Goss Dexter Inc Druckerpresse mit einem Plattenzylinder und einem Gegendruckzylinder
DE2103711A1 (de) * 1971-01-27 1972-08-17 Schnellpressenfabrik Koenig & Bauer AG, 8700 Würzburg Zurichtung für Gummizylinder
FR2157464A5 (fr) * 1971-10-16 1973-06-01 Maschf Augsburg Nuernberg Ag
DE3315506A1 (de) * 1983-04-28 1984-10-31 Siegfried Dipl.-Ing. Geiger (FH), 8039 Puchheim Offset-tuch fuer den offset-zylinder des druckwerks einer offset-druckmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5299106A (en) * 1976-02-16 1977-08-19 Jiyuichi Inaba Method of and apparatus for offset printing continuous unit patterns on continuous sheet
DE2948489C2 (de) * 1979-12-01 1982-08-26 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Gummizylinder für eine Bogen-Offsetdruckmaschine
DE3203879C2 (de) * 1982-02-05 1984-10-31 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogen-Offset-Rotationsdruckmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE256705C (fr) *
CH450460A (de) * 1965-08-13 1968-01-31 Miehle Goss Dexter Inc Druckerpresse mit einem Plattenzylinder und einem Gegendruckzylinder
DE2103711A1 (de) * 1971-01-27 1972-08-17 Schnellpressenfabrik Koenig & Bauer AG, 8700 Würzburg Zurichtung für Gummizylinder
FR2157464A5 (fr) * 1971-10-16 1973-06-01 Maschf Augsburg Nuernberg Ag
DE3315506A1 (de) * 1983-04-28 1984-10-31 Siegfried Dipl.-Ing. Geiger (FH), 8039 Puchheim Offset-tuch fuer den offset-zylinder des druckwerks einer offset-druckmaschine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194617A3 (en) * 1985-03-14 1987-10-07 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Printing unit for a rotary offset printing press
EP0194617A2 (fr) * 1985-03-14 1986-09-17 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Elément d'impression pour une rotative offset
US6408747B2 (en) 1998-01-31 2002-06-25 Man Roland Druckmaschinen Ag Offset printing unit
EP0933200A1 (fr) * 1998-01-31 1999-08-04 MAN Roland Druckmaschinen AG Dispositif pour imprimer offset
DE10016409B4 (de) * 1999-12-02 2007-03-15 Koenig & Bauer Ag Druckeinheit einer Rotationsdruckmaschine
DE10016409A1 (de) * 1999-12-02 2001-06-07 Koenig & Bauer Ag Zylinder einer Rotationsdruckmaschine
US8904931B2 (en) 2003-11-10 2014-12-09 Day International, Inc. Printing blanket construction and method of making
CN100482476C (zh) * 2003-12-16 2009-04-29 柯尼格及包尔公开股份有限公司 具有形状稳定托板的橡皮布及制法以及印刷机的印刷装置
EP1707355A2 (fr) * 2003-12-16 2006-10-04 Koenig & Bauer Aktiengesellschaft Unité d'impression d'une machine d'impression sans dispositif de mouillage
WO2005058601A3 (fr) * 2003-12-16 2007-01-18 Koenig & Bauer Ag Blanchet a plaque support indeformable, procede de production d'un tel blanchet et mecanisme d'impression pour machine a imprimer sans dispositif de mouillage
JP2007511389A (ja) * 2003-12-16 2007-05-10 ケーニツヒ　ウント　バウエル　アクチエンゲゼルシヤフト 形状安定性の支持プレートを備えた印刷ブランケット、このような印刷ブランケットを製作するための方法ならびに湿し装置なしの印刷機械に用いられる印刷装置
EP1707355A3 (fr) * 2003-12-16 2007-07-25 Koenig & Bauer Aktiengesellschaft Unité d'impression d'une machine d'impression sans dispositif de mouillage
EP1688251A3 (fr) * 2005-02-04 2010-03-03 Koenig & Bauer Aktiengesellschaft Unité d'impression d'une machine à imprimer
DE102005005302A1 (de) * 2005-02-04 2006-08-10 Koenig & Bauer Ag Druckwerk einer Druckmaschine
EP1832419A3 (fr) * 2006-03-07 2009-12-23 WIFAG Maschinenfabrik AG Elément d'atténuation de contraintes
EP1832419A2 (fr) * 2006-03-07 2007-09-12 WIFAG Maschinenfabrik AG Elément d'atténuation de contraintes
KR101234918B1 (ko) * 2010-03-17 2013-02-19 에이치티씨 코포레이션 네트워크 개시 접속 해제 절차를 처리하는 장치 및 방법
EP2829402A3 (fr) * 2013-07-26 2015-09-02 manroland web systems GmbH Unité d'impression offset et habillage pour le blanchet
JP2016132148A (ja) * 2015-01-19 2016-07-25 西研グラフィックス株式会社 ブランケット胴の製造方法

Also Published As

Publication number Publication date
DE3582401D1 (de) 1991-05-08
EP0182156B1 (fr) 1991-04-03
DE3441175A1 (de) 1986-05-22
DE3441175C2 (de) 1987-01-22
EP0182156B2 (fr) 1996-07-03
EP0182156A3 (en) 1988-01-20

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