EP0387484B1 - Zusatzvorrichtung für ein Feuchtwerk einer Offsetdruckmaschine - Google Patents

Zusatzvorrichtung für ein Feuchtwerk einer Offsetdruckmaschine Download PDF

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Publication number
EP0387484B1
EP0387484B1 EP90100476A EP90100476A EP0387484B1 EP 0387484 B1 EP0387484 B1 EP 0387484B1 EP 90100476 A EP90100476 A EP 90100476A EP 90100476 A EP90100476 A EP 90100476A EP 0387484 B1 EP0387484 B1 EP 0387484B1
Authority
EP
European Patent Office
Prior art keywords
roller
device frame
bearing
coupling part
damping
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
EP90100476A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0387484A2 (de
EP0387484A3 (de
Inventor
Herbert Rebel
Peter Hummel
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT90100476T priority Critical patent/ATE89511T1/de
Publication of EP0387484A2 publication Critical patent/EP0387484A2/de
Publication of EP0387484A3 publication Critical patent/EP0387484A3/de
Application granted granted Critical
Publication of EP0387484B1 publication Critical patent/EP0387484B1/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
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers

Definitions

  • the invention relates to an additional device for a dampening system according to the preamble of the first claim.
  • a dampening unit of the type mentioned is known from DE-PS 2 649 003.
  • the advantage of the invention is that the additional device can be retrofitted to the known dampening unit type without special precautions.
  • the additional device can thus be used variably, for example only in the case of critical jobs, and is used in the printing unit, which requires special measures against channel effects.
  • a printing plate on a plate cylinder 2 is supplied with dampening liquid from a dampening solution tank by means of a constantly rotating dampening roller 4, a metering roller 5, a dampening device 6 and a dampening solution application roller 7.
  • the dampening solution applicator roller 7 is mounted in a bearing lever 3 mounted eccentrically to the dampening device 6.
  • the additional device has a device frame 1.
  • This frame consists of vertical bearing plates 14 which are screwed or pinned to a frame by an upper cross member 12 and a lower cross member 21, with the bearing plate 14 on both sides first distribution roller 18 and a second distribution roller (tandem roller) 19 receives.
  • Flattened pins 27, 28 of the friction rollers 18, 19 are axially immovable in guides 16 of the bearing plate 14, but radially displaceable relative to the dampening roller 7 under spring action 29.
  • the roller jacket of the friction rollers 18, 19 is rotatably mounted on the roller axes.
  • the resiliently generated contact pressure of the friction rollers 18, 19 is caused by the weight of the device frame 1, so that there is always the same pressure between the friction rollers 18, 19 and application roller 7.
  • the spring 29 is supported on a plate 24 which is fastened on the bearing plate 14 by means of screw 25. By play s between screw 26 and plate 24 there is an adjustment path of the friction rollers 18, 19 radially to the dampening roller 7 (Fig
  • the device frame 1 is received in the bearing lever 3 so that it can move radially relative to the dampener 6, so that the device frame 1 can be coupled and uncoupled in the direction of the arrow or can be uncoupled in the sense of a roller stop (see FIG. 5).
  • the receptacle in the bearing lever 3 consists of a slot 13 and a recess 9, the slot 13 receives an eye 20 of the coupling part 10 in a form-fitting manner. It secures the rotation of the coupling part 10, while the recess 9 secures the lateral position of the coupling part 10.
  • the coupling part 10 is attached laterally on the outside to the pin 8 of the cross member 12.
  • the pin 11 is fastened to the bearing plate 14 and, as an additional guide, has the guide rollers 15, which are supported on counter surfaces on the coupling part 10. In this way, the guide rollers secure the additional device against rotation from its functional position in a uncoupled (parked) position (see FIG. 3).
  • a screw 17 is provided, which is arranged in the direction of the slot 13 in the bearing lever 3.
  • the drive mechanism 22, 23 which causes the axial back-and-forth movement consists in the exemplary embodiment of cam rollers 22 which are fastened to the lower crossmember 21 of the device frame 1 and are supported on both sides by thrust washers 23 of the dampening driver 6, which, as usual, is driven to oscillate laterally by the printing press is.
  • the additional device makes it possible to subsequently arrange additional rollers (tandem rollers) with lateral rubbing on an application roller of a dampening unit in sheet-fed offset printing machines in order to compensate for the excess liquid as a result of channel repercussions.
  • the stroke of the dampener 6 can be switched off, so that the friction rollers 18, 19 then act as rider rollers without axial friction.
  • At least one of the friction rollers 18, 19 or rider rollers must be given a color-guiding surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Drying Of Solid Materials (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP90100476A 1989-03-13 1990-01-11 Zusatzvorrichtung für ein Feuchtwerk einer Offsetdruckmaschine Expired - Lifetime EP0387484B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100476T ATE89511T1 (de) 1989-03-13 1990-01-11 Zusatzvorrichtung fuer ein feuchtwerk einer offsetdruckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908045 1989-03-13
DE3908045A DE3908045C1 (enrdf_load_stackoverflow) 1989-03-13 1989-03-13

Publications (3)

Publication Number Publication Date
EP0387484A2 EP0387484A2 (de) 1990-09-19
EP0387484A3 EP0387484A3 (de) 1991-03-27
EP0387484B1 true EP0387484B1 (de) 1993-05-19

Family

ID=6376183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100476A Expired - Lifetime EP0387484B1 (de) 1989-03-13 1990-01-11 Zusatzvorrichtung für ein Feuchtwerk einer Offsetdruckmaschine

Country Status (7)

Country Link
US (1) US5005474A (enrdf_load_stackoverflow)
EP (1) EP0387484B1 (enrdf_load_stackoverflow)
JP (1) JPH02274538A (enrdf_load_stackoverflow)
AT (1) ATE89511T1 (enrdf_load_stackoverflow)
BR (1) BR9001154A (enrdf_load_stackoverflow)
DE (2) DE3908045C1 (enrdf_load_stackoverflow)
ES (1) ES2041449T3 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4171210B2 (ja) * 2001-12-17 2008-10-22 株式会社小森コーポレーション 印刷機のローラ保持装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144155C (enrdf_load_stackoverflow) *
DD125553A1 (enrdf_load_stackoverflow) * 1976-03-29 1977-05-04
DE2649003C2 (de) * 1976-10-28 1982-12-23 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach An- und Abstellvorrichtung der Walzen eines Feuchtwerkes für Offsetdruckmaschinen
US4130057A (en) * 1977-10-25 1978-12-19 Roland Offsetmaschinenfabrik Faber & Schleicher Ag. Dampening system for printing presses, particularly offset printing presses
IT1160413B (it) * 1978-12-28 1987-03-11 Cigardi Omc Sa Dispositivo di bagnotura perfezionato, ad acqua ed a miscela acqua-alcool, applicabile su macchine da stampa offset
DD144155B1 (de) * 1979-06-06 1988-04-27 Hans Johne Feuchtwerk fuer rotations-offsetdruckmaschinen
US4463674A (en) * 1982-06-01 1984-08-07 Becker Michael T Mounting means for a water unit to a printing press

Also Published As

Publication number Publication date
ES2041449T3 (es) 1993-11-16
EP0387484A2 (de) 1990-09-19
DE59001466D1 (de) 1993-06-24
US5005474A (en) 1991-04-09
JPH02274538A (ja) 1990-11-08
BR9001154A (pt) 1991-03-19
DE3908045C1 (enrdf_load_stackoverflow) 1990-05-10
ATE89511T1 (de) 1993-06-15
EP0387484A3 (de) 1991-03-27

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