EP0774353A1 - Machine d'impression offset - Google Patents

Machine d'impression offset Download PDF

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Publication number
EP0774353A1
EP0774353A1 EP96114865A EP96114865A EP0774353A1 EP 0774353 A1 EP0774353 A1 EP 0774353A1 EP 96114865 A EP96114865 A EP 96114865A EP 96114865 A EP96114865 A EP 96114865A EP 0774353 A1 EP0774353 A1 EP 0774353A1
Authority
EP
European Patent Office
Prior art keywords
roller
inking
dampening
levers
intermediate roller
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
EP96114865A
Other languages
German (de)
English (en)
Other versions
EP0774353B1 (fr
Inventor
Rudi Junghans
Hermann Beisel
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0774353A1 publication Critical patent/EP0774353A1/fr
Application granted granted Critical
Publication of EP0774353B1 publication Critical patent/EP0774353B1/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
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/36—Inking-rollers serving also to apply ink repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers

Definitions

  • the invention relates to an offset printing machine with an inking and a dampening unit, which are assigned to a plate cylinder, with at least one intermediate roller that connects ink-driven and dampening application rollers driven by friction, the intermediate roller being supported on both sides and by means of adjusting means to form an inking and / or or a dampening roller is adjustable.
  • the object of the present invention is to reduce the stenciling on the first inking roller in a separate mode of operation between the inking and dampening units, so that even difficult printing work can be carried out.
  • the object is achieved in that the intermediate roller is mounted on swivel levers on both sides, in such a way that it remains in rolling contact with the first inking roller when it is being adjusted and that it is lifted off the dampening roller when it is switched off.
  • the intermediate roller if the intermediate roller is lifted off the dampening roller so that the dampening unit is separated from the inking unit, the intermediate roller remains in rolling contact with the first inking roller and can even out the ink film returning from the plate on the inking roller and thus largely prevent stenciling.
  • the dampening system can work independently Wet the printing plate from the inking unit.
  • the dampening roller can be driven at different speeds to the plate cylinder.
  • An advantageous embodiment of the invention is characterized in that pivot levers are arranged on both sides of the bearings of the first inking roller, in which the intermediate roller is mounted and that adjusting means are assigned to the pivot levers.
  • the intermediate roller thus pivots around the first inking roller, so that it always remains in contact with the inking roller when it is set down by the dampening roller.
  • a further advantageous embodiment of the invention is characterized in that pivot levers are mounted on both sides of the bearings of the dampening application roller, to which actuating means are assigned, that pivot levers are pivotally attached to the pivot levers, on which the intermediate roller is mounted and that couplings act on the bearings of the intermediate roller , which are pivotally mounted on both sides on the bearings of the first inking roller.
  • the couplings ensure the permanent contact of the intermediate roller with the first inking roller, so that contact with the first inking roller is maintained when the same is turned off.
  • adjusting means are provided on the coupling which engage the bearings of the intermediate roller in order to adjust the distance between the intermediate roller and the first inking roller.
  • Another variant of the storage of the intermediate roller is characterized in that pivot levers are mounted on both sides of the bearings of the dampening roller, the Adjustment means are assigned that bearing levers are pivotally attached to the pivot levers, on which the intermediate roller is mounted, and that compression springs are assigned to the bearing levers, which position the intermediate roller against the first inking roller, the compression springs being held by support bodies which are attached to the pivot levers .
  • a play-free adjustment of the intermediate roller to the first inking roller can be ensured by the compression springs, the pressure of the compression springs determining the contact force. Even when the intermediate roller is parked, when it is lifted off the first dampening roller, the adjustment to the first inking roller is not affected.
  • Another embodiment of the invention is characterized in that pivot levers are mounted on both sides of the bearings of the dampening roller, to which actuating means are assigned that guides are provided on the pivot levers in which the bearings of the intermediate roller are slidably guided and that the guides are at an angle alpha are arranged to the first inking roller, so that the contact pressure of the intermediate roller on the first inking roller is greater than the contact pressure of the intermediate roller on the dampening roller.
  • the intermediate roller is also driven by the first inking roller in the adjusted position, regardless of the speed at which the dampening roller is driven.
  • an inking unit 2 and a dampening unit 3 are assigned to the plate cylinder 1.
  • An intermediate roller 4 connects the dampening roller 5 to the first inking roller 6.
  • the dampening roller 5 is assigned a drive roller 7 which drives the dampening roller 5 and prevents the dampening roller 5 from being stenciled.
  • the intermediate roller 4 can be mounted on both sides on pivot levers, which in turn are arranged on the bearings of the first inking roller 6, so that the intermediate roller 4 pivots when it is turned around the first inking roller and remains in rolling contact with the latter.
  • the intermediate roller 4 is lifted off the dampening roller 5.
  • the intermediate roller 4 is supported on both sides via pivot levers 8 on the bearing of the dampening roller 5.
  • the pivoting lever 8 in turn is assigned adjusting means 9 with which the intermediate roller 4 can be switched off by the dampening roller 5.
  • bearing levers 10 are pivotally mounted on pins 11, on which the intermediate roller 4 is mounted via bearings 12.
  • the bearings 12 can be adjusted via adjusting screws 13 in the bearing lever 10.
  • Couplings 14 engage on the bearings 12 of the intermediate roller 4 and are pivotally mounted on both sides of the bearings 15 of the first inking roller 6. The distance between the first inking roller 6 and the Adjust intermediate roller 4.
  • the coupling 14 thus cause the intermediate roller 4 with constant pressure on the first Ink application roller 6 is present, regardless of whether the intermediate roller 4 is switched off from the dampening roller 5 via the adjusting means 9.
  • the bearings 15 of the first inking rollers and the bearings 17 of the dampening roller 5 are designed such that both rollers can be set down from the outer surface of the plate cylinder.
  • the embodiment variant according to FIG. 4 differs from the embodiment according to FIG. 2 in that the coupling 14 is omitted and in its place a compression spring 18 is provided, which positions the bearing levers 10 and thus the intermediate roller 4 on the first inking roller 6.
  • the compression springs 18 are supported on support bodies 19 which are fastened to the pivot levers 8.
  • the position of the intermediate roller 4 is shown in dash-dotted lines in the position in which it is in contact both with the first inking roller 6 and with the dampening roller 5.
  • the extended position of the intermediate roller 4 shows a distance from the dampening roller 5, the compression spring 18 ensuring constant contact with the outer surface of the first inking roller 6.
  • Fig. 5 shows a modification in which in the pivot lever 8 'have guides 20 in which the bearings 12 of the intermediate roller 4 are slidably guided.
  • the guides 20 are arranged at an angle alpha to the first inking roller 6, so that the contact pressure of the intermediate roller 4 to the first inking roller 6 is greater than the contact pressure of the intermediate roller 4 to the dampening roller 5.
  • the pressure spring 21 associated with the actuating means 9 will press the intermediate roller 4 with its full force onto the first inking roller 6. Only the dead weight of the intermediate roller 4 still causes a low contact force to the dampening roller 5.
  • the intermediate roller 4 is driven by the first inking roller 6 and a differential speed which may be given by the dampening roller 5 cannot affect the intermediate roller 4, but instead leads to slippage between the two rollers. In this embodiment too, the intermediate roller 4 can largely prevent stenciling of the first inking roller 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP96114865A 1995-11-07 1996-09-17 Machine d'impression offset Expired - Lifetime EP0774353B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19541418 1995-11-07
DE19541418A DE19541418A1 (de) 1995-11-07 1995-11-07 Offsetdruckmaschine

Publications (2)

Publication Number Publication Date
EP0774353A1 true EP0774353A1 (fr) 1997-05-21
EP0774353B1 EP0774353B1 (fr) 1999-12-01

Family

ID=7776808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114865A Expired - Lifetime EP0774353B1 (fr) 1995-11-07 1996-09-17 Machine d'impression offset

Country Status (4)

Country Link
US (1) US5823107A (fr)
EP (1) EP0774353B1 (fr)
JP (1) JP3930926B2 (fr)
DE (2) DE19541418A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911568A1 (de) * 1999-03-16 2000-09-21 Heidelberger Druckmasch Ag Verfahren zum Einfeuchten einer Flachdruckform und Feuchtwerk einer Flachdruckmaschine
US20030172818A1 (en) * 2002-03-13 2003-09-18 Marcel Motard Dampening system for a printing press
US6698877B2 (en) 2002-06-28 2004-03-02 Kimberly-Clark Worldwide, Inc. Offset printing apparatus for applying a substance
JP2007021858A (ja) * 2005-07-15 2007-02-01 Komori Corp 移動型インキユニットを備えた印刷機
CN110001187B (zh) * 2019-04-25 2023-08-29 浙江炜冈科技股份有限公司 胶印设备的着墨机构和印刷机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926116A (en) * 1974-07-01 1975-12-16 Webcrafters Inc Dampening apparatus for offset printing press
DE2909765A1 (de) * 1979-03-13 1980-09-18 Maschf Augsburg Nuernberg Ag Feuchtwerk
GB2077660A (en) * 1980-06-13 1981-12-23 Vickers Ltd Lithographic printing presses
JPS57123058A (en) * 1981-01-22 1982-07-31 Komori Printing Mach Co Ltd Damping device for press
DE3641013A1 (de) * 1986-04-21 1987-10-22 Polygraph Leipzig Brueckenwalzensteuerung an farb- und feuchtwerken in druckmaschinen
DE4013741A1 (de) * 1990-04-28 1991-10-31 Heidelberger Druckmasch Ag Offset-druckmaschine mit zwischenwalze zur verbindung von farb- und feuchtwerk

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2845932A1 (de) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag Kombiniertes feucht-farbwerk fuer offsetdruckwerke
DE3146223C2 (de) * 1981-11-21 1985-03-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feucht-Farbwerk für Offsetdruckmaschinen
JPH0717049B2 (ja) * 1988-05-13 1995-03-01 リョービ株式会社 オフセット印刷機におけるローラの接続・分離装置
JPH01166528U (fr) * 1988-05-16 1989-11-22
DE3825517A1 (de) * 1988-07-27 1990-02-01 Wifag Maschf Vorrichtung zum an- und abstellen sowie einstellen von farbwerks- bzw. feuchtwerkswalzen einer druckmaschine
DE3826222A1 (de) * 1988-08-02 1990-02-15 Roland Man Druckmasch Feuchtwerk
DE3908043C1 (fr) * 1989-03-13 1990-04-26 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5158017A (en) * 1990-09-11 1992-10-27 Sun Graphic Technologies, Inc. Press dampening system
DE9316916U1 (de) * 1993-11-05 1994-01-27 Maschinenfabrik Goebel Gmbh, 64293 Darmstadt Kombiniertes Feucht-Farbwerk
DE4419850C2 (de) * 1994-06-07 2002-02-28 Koenig & Bauer Ag Antriebs- und changierfähige Brückenwalze
US5623873A (en) * 1995-02-05 1997-04-29 Ryobi Limited Offset printing press

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926116A (en) * 1974-07-01 1975-12-16 Webcrafters Inc Dampening apparatus for offset printing press
DE2909765A1 (de) * 1979-03-13 1980-09-18 Maschf Augsburg Nuernberg Ag Feuchtwerk
GB2077660A (en) * 1980-06-13 1981-12-23 Vickers Ltd Lithographic printing presses
JPS57123058A (en) * 1981-01-22 1982-07-31 Komori Printing Mach Co Ltd Damping device for press
DE3641013A1 (de) * 1986-04-21 1987-10-22 Polygraph Leipzig Brueckenwalzensteuerung an farb- und feuchtwerken in druckmaschinen
DE4013741A1 (de) * 1990-04-28 1991-10-31 Heidelberger Druckmasch Ag Offset-druckmaschine mit zwischenwalze zur verbindung von farb- und feuchtwerk

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 216 (M - 168) 29 October 1982 (1982-10-29) *

Also Published As

Publication number Publication date
DE59603776D1 (de) 2000-01-05
DE19541418A1 (de) 1997-05-15
US5823107A (en) 1998-10-20
JP3930926B2 (ja) 2007-06-13
JPH09136397A (ja) 1997-05-27
EP0774353B1 (fr) 1999-12-01

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