EP0182156B2 - Offsetdruckmaschine - Google Patents

Offsetdruckmaschine Download PDF

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Publication number
EP0182156B2
EP0182156B2 EP85113793A EP85113793A EP0182156B2 EP 0182156 B2 EP0182156 B2 EP 0182156B2 EP 85113793 A EP85113793 A EP 85113793A EP 85113793 A EP85113793 A EP 85113793A EP 0182156 B2 EP0182156 B2 EP 0182156B2
Authority
EP
European Patent Office
Prior art keywords
cylinder
blanket
rubber
plate
plate 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.)
Expired - Lifetime
Application number
EP85113793A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0182156A3 (en
EP0182156B1 (de
EP0182156A2 (de
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
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
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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(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0182156A2 publication Critical patent/EP0182156A2/de
Publication of EP0182156A3 publication Critical patent/EP0182156A3/de
Publication of EP0182156B1 publication Critical patent/EP0182156B1/de
Application granted granted Critical
Publication of EP0182156B2 publication Critical patent/EP0182156B2/de
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 a web rotary offset printing press according to the preamble of claim 1.
  • 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 a relatively low stability. Due to the multiple circumference of the blanket cylinder, however, the stability of the overall arrangement can be increased so 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 blanket cylinder, so that the blanket cylinder receives the same color application several times per revolution and several copies are printed per revolution of the blanket 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 blanket section associated with a development of the plate cylinder.
  • different printing qualities result in the area of the successive peripheral sections of the blanket cylinder.
  • Another disadvantage of such an arrangement would be 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 simple, user-friendly and reliable enough, and would therefore prove to be uneconomical.
  • a sheet-fed rotary offset printing press which indeed has a rubber cylinder that is twice the size of the plate cylinder and impression cylinder.
  • this has two circumferential halves which are separated from one another by opposing cylinder pits, on each of which an associated rubber blanket, which extends over only one circumferential half, is received.
  • DE-C 29 48 489 shows a similarly constructed blanket cylinder for a sheet-fed rotary printing press, in which, in contrast to the above arrangement, a blanket is provided that extends over both circumferential halves, the ends of which are held in one cylinder pit and the middle area of which is in the other cylinder pit arranged clamping device is tensioned.
  • the tensioning device divides the rubber blanket, which is continuous over the entire cylinder circumference, into two independent halves. Apart from that, the required clamping device is cumbersome and complex.
  • the known arrangement according to DE-C 29 48 489 is accordingly not suitable for eliminating the disadvantages of the generic prior art.
  • DE-C 21 51 650 shows a sheet-fed offset printing press with cylinders of the same size, at least one of which is to have a spiral circumferential contour which is to extend over the entire cylinder circumference from the front to the rear edge of the cylinder pit provided here.
  • Such an arrangement would also not be suitable for avoiding the disadvantages of the generic prior art, since here with a rubber blanket cylinder having a larger diameter than the plate cylinder, a continuous, one-piece stretched rubber blanket would not be usable.
  • the CH-A 450 460 shows a high-pressure machine for newspaper printing, in which the counter-pressure cylinder interacting with the plate cylinder is provided with a circumferential flattening. This is placed so that it passes through the pressure gap together with the gap between the cast pressure plates. This is to avoid an abrupt drop or increase in the mutual contact forces when the plate gap passes through the pressure gap. The problem described at the beginning does not exist here.
  • 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 achievable cylinder stability.
  • the measures according to the invention also result in a high level of user-friendliness, since the retraction of the circumferential contour of the steel jacket due to its immovable arrangement has not made it more difficult to stretch the blanket compared with previously.
  • the double printing unit on which FIG. 1 is based consists of two mutually abutting, identical diameters and thus the same circumferences having rubber cylinders 1, each of which is assigned an associated, slender plate cylinder 2.
  • the circumferences of the blanket cylinder 1 and plate cylinder 2 are coordinated here so that the plate cylinder 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 which are movably arranged 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 Gummituchspannvor 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 each meet in the contact area between the rubber cylinder 1 and the associated Paltten cylinder 2 with its cylinder pit 5.
  • the rubber blanket 6 is therefore relieved every time the cylinder pit 5 passes through the contact area, so that each time the plate cylinder 2 is processed on the associated rubber cylinder 1, the same tension conditions are present in the rubber blanket 6, as shown in FIG. 1 above on the basis of the tension build-up Spiral lines 10 is indicated.
  • 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 the latter 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 equalization can take place in the rubber blanket 6, regardless of the width of the opening cross section of the cylinder pit 5.
  • 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 be integrated into the steel structure of the rubber cylinder 1.
  • the rubber cylinder 1 generally consists, as can be seen from 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 ° with respect to the tensioning channel 7 is provided with a groove-shaped recess 9a parallel to the tensioning channel and extending over the entire cylinder length, 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 steel jacket 11 of the rubber cylinder 1 is provided with a circumferential flattening 9c which is 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 with its passage coinciding 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 groove-shaped recess 9a or flattened portion 9c provided to form the relief device 9 are each arranged parallel to the tensioning channel 7 and extend over the entire length of the cylinder.
  • the width and depth can correspond to the width and depth of the tensioning channel 7. As a rule, however, one can get by with a smaller width and depth in order to simulate a tension channel with regard to the tension conditions in the rubber blanket 6 and thus bring about a 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 Offsetdruckmaschine Expired - Lifetime EP0182156B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843441175 DE3441175A1 (de) 1984-11-10 1984-11-10 Offsetdruckmaschine
DE3441175 1984-11-10

Publications (4)

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

Family

ID=6250019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113793A Expired - Lifetime EP0182156B2 (de) 1984-11-10 1985-10-30 Offsetdruckmaschine

Country Status (2)

Country Link
EP (1) EP0182156B2 (xx)
DE (2) DE3441175A1 (xx)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10016409B4 (de) * 1999-12-02 2007-03-15 Koenig & Bauer Ag Druckeinheit einer Rotationsdruckmaschine
DE19958133C2 (de) * 1999-12-02 2003-03-06 Koenig & Bauer Ag Druckeinheit
DE3673668D1 (de) * 1985-03-14 1990-10-04 Roland Man Druckmasch Druckwerk fuer eine offset-rotationsdruckmaschine.
DE19740475A1 (de) * 1997-09-15 1999-03-18 Roland Man Druckmasch Druckende Zylinder in einer Rollenrotationsdruckmaschine mit zueinander versetzten Spannkanälen
DE19803809A1 (de) 1998-01-31 1999-08-05 Roland Man Druckmasch Offsetdruckwerk
DE10066162B4 (de) * 1999-12-02 2004-08-19 Koenig & Bauer Ag Druckwerk einer Rotationsdruckmaschine
EP1970197B1 (de) * 1999-12-02 2010-11-17 Koenig & Bauer AG Druckwerk einer Rotationsdruckmaschine
KR100564781B1 (ko) * 2001-04-09 2006-03-27 쾨니히 운트 바우어 아크티엔게젤샤프트 인쇄기의 인쇄 장치
DE10250690B4 (de) * 2002-10-31 2006-03-02 Koenig & Bauer Ag Rotationskörper einer Druckmaschine mit einem Ballen
JP2007510564A (ja) 2003-11-10 2007-04-26 デイ インターナショナル インコーポレーテッド 印刷ブランケット構成体及びその製造方法
WO2005058601A2 (de) * 2003-12-16 2005-06-30 Koenig & Bauer Aktiengesellschaft Drucktuch mit einer formstabilen trägerplatte, ein verfahren zur herstellung eines solchen drucktuches sowie ein druckwerk für eine druckmaschine ohne feuchtwerk
DE102004011882A1 (de) * 2003-12-16 2005-07-21 Koenig & Bauer Ag Druckwerk für eine Druckmaschine ohne Feuchtwerk sowie Drucktuch
DE102005005302A1 (de) * 2005-02-04 2006-08-10 Koenig & Bauer Ag Druckwerk einer Druckmaschine
DE102006010551A1 (de) * 2006-03-07 2007-09-13 Maschinenfabrik Wifag Entlastungselement
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
US8515475B2 (en) * 2010-03-17 2013-08-20 Htc Corporation Apparatuses and methods for handling network initiated connection release procedures
DE102013107995A1 (de) * 2013-07-26 2015-01-29 Manroland Web Systems Gmbh Druckwerk und Kontaktstruktur für ein Druckwerk
JP6410617B2 (ja) * 2015-01-19 2018-10-24 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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE256705C (xx) *
US3395638A (en) * 1965-08-13 1968-08-06 Miehle Goss Dexter Inc Impression cylinder construction to prevent streaking in letterpress
DE2103711A1 (de) * 1971-01-27 1972-08-17 Schnellpressenfabrik Koenig & Bauer AG, 8700 Würzburg Zurichtung für Gummizylinder
IT966154B (it) * 1971-10-16 1974-02-11 Maschf Augsburg Nuernberg Ag Perfezionamento nelle macchine da stampa offset
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
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

Also Published As

Publication number Publication date
EP0182156A3 (en) 1988-01-20
DE3582401D1 (de) 1991-05-08
DE3441175A1 (de) 1986-05-22
DE3441175C2 (xx) 1987-01-22
EP0182156B1 (de) 1991-04-03
EP0182156A2 (de) 1986-05-28

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