EP0296394B1 - Dispositif de mouillage pour une machine à imprimer en offset - Google Patents

Dispositif de mouillage pour une machine à imprimer en offset Download PDF

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Publication number
EP0296394B1
EP0296394B1 EP88108849A EP88108849A EP0296394B1 EP 0296394 B1 EP0296394 B1 EP 0296394B1 EP 88108849 A EP88108849 A EP 88108849A EP 88108849 A EP88108849 A EP 88108849A EP 0296394 B1 EP0296394 B1 EP 0296394B1
Authority
EP
European Patent Office
Prior art keywords
roller
metering
metering roller
dampening
contact zone
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
EP88108849A
Other languages
German (de)
English (en)
Other versions
EP0296394A3 (en
EP0296394A2 (fr
Inventor
Walter Dipl.-Ing. D'heureuse
Hans-Jürgen Kusch
Gerhard Heppenstiel
Rudi Stellberger
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
Priority to EP88108849A priority Critical patent/EP0296394B1/fr
Priority to AT88108849T priority patent/ATE73048T1/de
Publication of EP0296394A2 publication Critical patent/EP0296394A2/fr
Publication of EP0296394A3 publication Critical patent/EP0296394A3/de
Application granted granted Critical
Publication of EP0296394B1 publication Critical patent/EP0296394B1/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
    • B41F7/26—Damping devices using transfer rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/38—Means for axially reciprocating inking rollers

Definitions

  • the invention relates to a dampening system for an offset printing machine with a metering roller, an application roller for applying dampening solution to a plate cylinder, a contact zone formed by mutual pressing of the metering roller and the application roller along axially parallel surface lines of these rollers, drive means for rotating the metering roller and the application roller in the area of the contact zone essentially pointing downward in the direction of the peripheral speeds of these rollers, a storage space for dampening solution located above the contact zone, formed by the lateral surfaces of the metering roller and the application roller and by sealing means at the ends of these rollers, and a traversing friction roller which cooperates with a roller surface.
  • Such a dampening system is known from DE-OS 22 06 498.
  • an oscillating friction roller is provided, which is arranged on the applicator roller between its contact point with the plate cylinder and the reservoir for dampening solution in the gusset between the applicator roller and a metering roller attached to it.
  • the object of the present invention is to propose a generic dampening system with which both a rubbing and an unhindered return transport of excess dampening solution from the plate cylinder to the storage space for dampening solution is possible.
  • the arrangement of the friction roller according to the invention counteracts both the so-called stenciling effect and a linear over-moistening.
  • the advantage of its comparative effect does not have to be bought through another disruptive influence which arises in known dampening units of the generic type in that the outer surface of the application roller is contacted by a distribution roller on its way from the plate cylinder to the reservoir for the dampening solution, whereby an unhindered return of dampening solution from the plate cylinder to the storage area for the dampening solution can be disturbed.
  • a secure drive of the distribution roller is guaranteed by positive drive means for the metering roller.
  • the arrangement of the friction roller according to the invention also has the advantage that an undisturbed transfer of the dampening solution film formed in the contact zone to the plate cylinder can take place.
  • the dampening unit 1 employed on a plate cylinder 2 comprises a metering roller 3, an applicator roller 4 for the dampening solution and a friction roller 5.
  • the shaft 6 of the metering roller 3 is accommodated on both sides in stationary bearings of the machine.
  • a bearing plate 7 is arranged on each shaft journal of the shaft 6 so as to be pivotable about the latter.
  • the two Bearing plates 7 are connected to one another by means of crossbeams 8.
  • the applicator roller 4 is supported with its ends in a slide shoe 9, which in turn slides on straight guide surfaces 10 incorporated into the bearing plates 7. These guide surfaces 10 are substantially parallel to the direction of a tangent to the plate cylinder 2 at a point of contact with the application roller 4.
  • the respective slide shoe 9 is connected to a shaft 11 which is threaded at the free end and runs in the direction of the guide surfaces 10 and from the respective bearing plate 7 is guided.
  • a compression spring 12 supported on the bearing plate 7 acts on the respective sliding shoe 9 in the direction of “releasing the contact with the metering roller”.
  • the shaft 11 also penetrates a recess 13 in the respective bearing plate 7, in each of which an actuator for the respective sliding block 9 is provided.
  • the respective actuator is formed from a slidably arranged on the shaft 11 and against a screwed onto the thread of the shaft 11 an adjusting sleeve 18 and a rack 17 (not shown) meshing with the rack 17 and 16 coaxial with a worm gear.
  • the gearwheels (not shown) for adjusting the respective toothed rack 17 are fastened together on an adjusting shaft 19.
  • the worm wheel 16, which is in engagement with a worm 15, is also fastened on this adjusting shaft 19, so that the adjusting shaft 19 can be rotated by means of an actuating part 14 arranged on the worm 15.
  • the dampening solution In the upper gusset between the metering roller 3 and the applicator roller 4 is the dampening solution, which is enclosed here by suitable (not shown) sealing means on the end faces of these rollers.
  • An adjustable amount of dampening solution by the mutual pressing of these rollers with the aid of the actuating part 14 is through the contact zone 20 of these rollers on the under Contact zone 20 located outer surface of the applicator roller 4 is conveyed to the plate cylinder 2.
  • the dampening unit has drive means 21, 22 for rotating the metering roller 3 and the applicator roller 4 with the circumferential speeds of these rollers pointing downward in the region of the contact zone 20.
  • These drive means drive the metering roller 3 at the peripheral speed of the plate cylinder 2. This takes place via a drive wheel 21 of a gear train of the printing press, which meshes with a gear 22 which is arranged coaxially with the metering roller 3 and is connected to the latter via a freewheel (not shown).
  • the application roller 4 is driven by the metering roller 3 via friction in the contact zone 20.
  • a traversing friction roller 5 is set on the metering roller 3, the rotation and traversing of which is accomplished by friction on the metering roller 3.
  • the ends of the axis 23 of the friction roller 5 are rotatably received in an elongated hole 24 of the respective bearing plate 7.
  • the elongated hole 24 extends essentially in the direction of the metering roller 3 and its width is adapted to the diameter of the axis 23.
  • this axis 23 is in each case fastened with an adjusting screw 25 screwed into the bearing plate 7, which presses the axis 23 onto a compression spring 26 arranged in relation to the adjusting screw in the bearing plate 7.

Claims (2)

  1. Dispositif de mouillage pour une machine d'impression offset, avec un rouleau doseur, un rouleau applicateur pour appliquer un agent de mouillage sur un cylindre porte-plaque, une zone de contact qui est formée, par pression réciproque du rouleau doseur et du rouleau applicateur, le long de génératrices d'axes parallèles en contact mutuel de ces rouleaux, des moyens d'entraînement pour faire tourner le rouleau doseur et le rouleau applicateur avec une direction des vitesses circonférentielles de ces rouleaux qui est orientée sensiblement vers le bas dans la région de la zone de contact, avec une chambre de stockage d'agent de mouillage qui se trouve au-dessus de la zone de contact et qui est formée par les surfaces d'enveloppe du rouleau doseur et du rouleau applicateur et par des moyens d'étanchéification prévus aux extrémités de ces rouleaux, et avec un rouleau distributeur traversant, qui coopère avec une surface de rouleau,
    caractérisé en ce que le rouleau distributeur (5) est en contact de frottement direct avec le rouleau doseur (3).
  2. Dispositif de mouillage selon la revendication 1, caractérisé en ce que des moyens d'entraînement par engagement positif (21,22) sont prévus pour l'entraînement du rouleau doseur (3).
EP88108849A 1987-06-25 1988-06-03 Dispositif de mouillage pour une machine à imprimer en offset Expired - Lifetime EP0296394B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP88108849A EP0296394B1 (fr) 1987-06-25 1988-06-03 Dispositif de mouillage pour une machine à imprimer en offset
AT88108849T ATE73048T1 (de) 1987-06-25 1988-06-03 Feuchtwerk fuer eine offsetdruckmaschine.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3720986 1987-06-25
DE3720986 1987-06-25
EP88108849A EP0296394B1 (fr) 1987-06-25 1988-06-03 Dispositif de mouillage pour une machine à imprimer en offset

Publications (3)

Publication Number Publication Date
EP0296394A2 EP0296394A2 (fr) 1988-12-28
EP0296394A3 EP0296394A3 (en) 1990-01-31
EP0296394B1 true EP0296394B1 (fr) 1992-03-04

Family

ID=6330269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108849A Expired - Lifetime EP0296394B1 (fr) 1987-06-25 1988-06-03 Dispositif de mouillage pour une machine à imprimer en offset

Country Status (7)

Country Link
US (1) US5101724A (fr)
EP (1) EP0296394B1 (fr)
AT (1) ATE73048T1 (fr)
DK (1) DK329388A (fr)
ES (1) ES2030462T3 (fr)
FR (1) FR2617089A1 (fr)
GB (1) GB2208626A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182989A (en) * 1989-05-03 1993-02-02 Heidelberg Druckmaschinen Ag Sealing device
GB2231001B (en) * 1989-05-03 1992-10-07 Heidelberger Druckmasch Ag Sealing arrangements for an offset printing press damping unit.
US5134935A (en) * 1989-10-12 1992-08-04 Yarn Products Company, Inc. Lithograhic dampener
DE69228207T2 (de) * 1991-06-06 1999-05-27 Baldwin Graphic System Inc Zuführungssystem für Anfeuchtflüssigkeit
US5694846A (en) * 1991-06-06 1997-12-09 Baldwin Graphics Systems, Inc. Fountain solution supply system
DE9110345U1 (fr) * 1991-08-22 1991-10-10 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE10258326B4 (de) * 2002-12-13 2006-12-14 Koenig & Bauer Ag Verfahren zur Steuerung einer ein Feuchtmittel aus einem Feuchtmittelreservoir aufnehmenden ersten Walze und einer zweiten Walze

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090A (en) * 1858-04-27 Printing-press
US677821A (en) * 1900-08-29 1901-07-02 John Wanamaker Label-printing machine.
US916432A (en) * 1908-05-25 1909-03-30 Fuchs And Lang Mfg Company Moistening mechanism for printing-presses.
US996827A (en) * 1910-07-22 1911-07-04 Single Service Package Corp Am Printing attachment for carton-crimping machines.
US2126768A (en) * 1938-01-20 1938-08-16 John G Goedike Dampening system for lithographic and analogous presses
US3106154A (en) * 1963-01-08 1963-10-08 Miller Printing Machinery Co Dampener for printing presses
US3280733A (en) * 1964-11-04 1966-10-25 Adamovske Strojirny Np Dampening device of a printing machine
US3625148A (en) * 1969-08-25 1971-12-07 Adamovske Strojirny Np Device for axially moving fluid-distributing rollers
US3701316A (en) * 1970-05-18 1972-10-31 Harris Intertype Corp Ink and dampener form roll interruption for cleaning purposes
US3769909A (en) * 1971-03-10 1973-11-06 Rockwell International Corp Wet nip dampener
DE2845932A1 (de) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag Kombiniertes feucht-farbwerk fuer offsetdruckwerke
US4455938A (en) * 1979-05-22 1984-06-26 Graph Tech Inc. Dampening apparatus for lithographic press
JPS5672960A (en) * 1979-11-19 1981-06-17 Tokyo Kikai Seisakusho:Kk Vibrator device of ink cylinder in rotary printer
DE3011031C2 (de) * 1980-03-21 1983-09-22 Grapho Metronic Meß- und Regeltechnik GmbH & Co KG, 8000 München Bogen-Rotations-Andruckoffsetdruckmaschine

Also Published As

Publication number Publication date
EP0296394A3 (en) 1990-01-31
DK329388A (da) 1988-12-26
EP0296394A2 (fr) 1988-12-28
FR2617089A1 (fr) 1988-12-30
GB2208626A (en) 1989-04-12
ES2030462T3 (es) 1992-11-01
DK329388D0 (da) 1988-06-16
ATE73048T1 (de) 1992-03-15
US5101724A (en) 1992-04-07
GB8814878D0 (en) 1988-07-27

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