EP0719639B1 - Dispositif de mouillage pour une machine à imprimer - Google Patents

Dispositif de mouillage pour une machine à imprimer Download PDF

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Publication number
EP0719639B1
EP0719639B1 EP95120136A EP95120136A EP0719639B1 EP 0719639 B1 EP0719639 B1 EP 0719639B1 EP 95120136 A EP95120136 A EP 95120136A EP 95120136 A EP95120136 A EP 95120136A EP 0719639 B1 EP0719639 B1 EP 0719639B1
Authority
EP
European Patent Office
Prior art keywords
roll
roller
dampening
damping
damping solution
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
EP95120136A
Other languages
German (de)
English (en)
Other versions
EP0719639A2 (fr
EP0719639A3 (fr
Inventor
Robert Müller
Helmut Puschnerat
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 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0719639A2 publication Critical patent/EP0719639A2/fr
Publication of EP0719639A3 publication Critical patent/EP0719639A3/fr
Application granted granted Critical
Publication of EP0719639B1 publication Critical patent/EP0719639B1/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

Definitions

  • the invention relates to a dampening system for a Offset rotary printing machine.
  • EP 04 62 490 A1 shows a generic dampening unit for a rotary printing press consisting of one Dip roller, a metering roller, a dampening roller and a dampening roller. It is optionally the Wet roller so driven that either between the dampening roller and the dampening roller or slip between the dampening roller and the metering roller occurs.
  • a dampening unit became known, which from one into one Dipping roller immersion roller, one Transfer roller and a dampening roller and one There is a dampening roller.
  • the dip roller has one chrome-plated surface and is changeable Peripheral speed drivable.
  • the transfer roller is coated with rubber, freely rotatable and adjustable to the dampening roller.
  • the dampening roller is chrome-plated and is covered by the plate cylinder Gears driven.
  • the dampening roller has a soft coating and is from the Wet friction roller taken away by friction.
  • the invention has for its object a dampening system with at least four rollers for applying Fountain solution on a plate cylinder one To create offset rotary printing press, which a carryover of ink on the dampening roller and largely avoided in the rest of the dampening system becomes.
  • a four-roller dampening unit 1 exists from a with a water-friendly material, e.g. B. Chromium or ceramics (e.g. aluminum oxide or chromium oxide) coated dip roller 2, one with rubber coated transfer roller 3, one in the axial direction reciprocating dampening roller 4 with a water-friendly coating, e.g. B. chrome or Ceramic, as well as from a rubber coated Moist application roller 5, which is connected to a plate cylinder 6 is frictionally adjustable, so that with approximately the same or opposite the plate cylinder 6 the peripheral speed is slightly lower, approx. with 99 to 99.5 percent.
  • the rollers 3; 5 can too be coated with rubber-like plastic like this e.g. B is already known from inking rollers.
  • the Dip roller 2 is partially immersed in a dampening solution box 7 with dampening solution 8 a.
  • the plunger roller 2 is from an electric motor 12 with optionally changeable Speed driven.
  • the dipping roller 2 is in contact with the transfer roller 3.
  • the transfer roller 3 can, for. B. via a transfer roller pin fixed gear and a not shown gearbox with a Gear ratio of about 1 to 3 with one of the Dip roller 2 against higher peripheral speed are driven. It is also possible that Transfer roller 3 with a separate, not shown equip speed-controlled electric motor drive, which is the ratio of the peripheral speeds of Transfer roller 3 and dip roller 2 in a ratio of 1: 3 maintains.
  • the dampening roller 4 is with a Peripheral speed driven, which is less than the peripheral speed of the plate cylinder 6, the however proportional to the peripheral speed of the Plate cylinder 6 behaves. Conveniently there is such a drive from a single drive, for. B. a speed-controllable geared motor 14 (Fig. 1).
  • the drive is for the dampening roller 4 from a gear train of z. B. three Gears 17, 18; 19.
  • the gear 21 is non-rotatable with a drive pin of the dampening roller 4 and that Gear 22 rotatably with a drive pin of the Plate cylinder 6 connected (Fig. 2).
  • the gear 17 stands with a drive gear 21 Wet roller 4, the gear 19 is with a Drive wheel 22 of the plate cylinder 6 in engagement.
  • the gear wheel 22 of the plate cylinder 6 also acts the machine drive.
  • the dampening roller 5 is thus on the plate cylinder 6 employed that this frictionally from Plate cylinder 6 is driven, as already mentioned in the first embodiment in which Circumferential speed of the dampening roller 5 compared to the plate cylinder 6 low friction losses occur. It can on the elastic surface Dampening roller 5 a pressure strip in one Contact area 23 between the dampening roller 5 and the plate cylinder 6 with a width of five to eleven millimeters can be set. This will achieved that the dampening roller 5 at least approximately, the peripheral speed of the Plate cylinder 6 (with occupied printing plates), while in a touch area 24 between Wet roller 4 and the dampening roller 5 a Differential speed arises because the Dampening roller 4 a lower peripheral speed, e.g. B. 96 percent, compared to the dampening roller 5 has, the engagement force of the dampening roller 4 and the dampening roller 5 is selected so that it does not follow the speed of the dampening roller 4, but the speed of the plate cylinder 6.
  • dampening roller 5 additionally a hard one coated with plastic driven inking roller 26 of a not shown
  • a speed-controllable geared motor 16 (Fig. 1) or driven by a gear 27 of gear 19 will (Fig. 2).
  • the peripheral speed of the Ink roller 26 is the same or approximately the same Circumferential speed of the plate cylinder 6.
  • the diameter d6 of the plate cylinder 6, the Diameter d5 of the dampening roller 5, the diameter d4 of the dampening roller 4, the diameter d3 of the Transfer roller 3 and the diameter d2 of the dip roller 2 behaves like 1 to (0.51 to 0.88) to (0.45 to 0.7) to (0.34 to 0.75) to (0.3 to 0.6).
  • peripheral speeds of plate cylinder 6 too Moist application roller 5 to dampening roller 4 too Transfer roller 3 to immersion roller 2 behave like 1 1 to (0.4 to 0.99) to (0.25 to 0.4) to (0.08 to 0.18).
  • the Circumferential speeds of plate cylinder 6 too Moist application roller 5 to dampening roller 4 too Transfer roller 3 to dip roller 2 as 1 to 1 to 0.96 0.33 to 0.1. Every time the machine changes speed, d. H. the plate cylinder 6 is proportional Circumferential speed change of rollers 2 to 5.
  • the storage of the cylinders, rollers, Gears are made in two, not shown Side frames.
  • the rollers are adjustable against each other by known means, such as. B. eccentric bushings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (4)

  1. Dispositif de mouillage (1) pour une machine à imprimer rotative offset, constituée d'un rouleau plongeant (2) pouvant être entraíné à une vitesse de rotation sélectionnée, alimenté en agent humidifiant, un rouleau de transfert (3) revêtu de matière synthétique, un rouleau distributeur (4) revêtu d'un matériau hydrophile, ainsi que d'un rouleau toucheur de mouillage (5), coopérant avec un cylindre porte-clichés (6), le rouleau distributeur (4) étant entraíné à une vitesse périphérique chaque fois proportionnelle, tout en étant cependant différente, à la vitesse périphérique du cylindre porte-clichés (6), caractérisé en ce que la vitesse périphérique du rouleau distributeur (4) est différente de la vitesse périphérique respective du rouleau de transfert (3) et du rouleau plongeant (2).
  2. Dispositif de mouillage selon la revendication 1, caractérisé en ce que les diamètres (d6) du cylindre porte-clichés (6) par rapport aux diamètres (d5) du rouleau toucheur de mouillage (5), le diamètre (d5) du rouleau toucheur de mouillage (5) par rapport au diamètre (d4) du rouleau distributeur (4), le diamètre (d4) du rouleau distributeur (4) par rapport au diamètre (d3) du rouleau de transfert (3), et le diamètre (d3) du rouleau de transfert (3) par rapport au diamètre (d2) du rouleau plongeant (2) sont dans un rapport de 1 à (0,51 à 0,88) à (0,45 à 0,7) à (0,34 à 0,75) à (0,30 à 0,60).
  3. Dispositif de mouillage selon la revendication 1, caractérisé en ce que les vitesses périphériques du cylindre porte-clichés (6) par rapport au rouleau toucheur de mouillage (5), du rouleau distributeur (4) par rapport au rouleau de transfert (3), par rapport au rouleau plongeant (2) sont dans un rapport 1:1 : (0,4 à 0,99) : (0,25 à 0,4) : (0,08 à 0,18).
  4. Dispositif de mouillage selon la revendication 1, caractérisé en ce que, dans le train de rouleau constitué du rouleau plongeant (2) du rouleau de transfert (3) du rouleau distributeur (4) et du rouleau toucheur de mouillage (5), entre le rouleau distributeur (4) et le rouleau toucheur de mouillage (5), est disposé au moins un autre rouleau (26) doté d'un entraínement forcé (27; 16).
EP95120136A 1994-12-30 1995-12-20 Dispositif de mouillage pour une machine à imprimer Expired - Lifetime EP0719639B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4447178 1994-12-30
DE4447178A DE4447178A1 (de) 1994-12-30 1994-12-30 Feuchtwerk für eine Druckmaschine

Publications (3)

Publication Number Publication Date
EP0719639A2 EP0719639A2 (fr) 1996-07-03
EP0719639A3 EP0719639A3 (fr) 1997-03-19
EP0719639B1 true EP0719639B1 (fr) 2000-03-15

Family

ID=6537467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120136A Expired - Lifetime EP0719639B1 (fr) 1994-12-30 1995-12-20 Dispositif de mouillage pour une machine à imprimer

Country Status (4)

Country Link
US (1) US5649481A (fr)
EP (1) EP0719639B1 (fr)
JP (1) JP3167606B2 (fr)
DE (2) DE4447178A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19714222C1 (de) * 1997-04-07 1998-04-16 Koenig & Bauer Albert Ag Feuchtmittelwalze
IES970423A2 (en) * 1997-06-05 1998-10-21 Richard Harrington Improvements relating to printing
US5909707A (en) * 1997-07-24 1999-06-08 Heidelberger Druckmaschinen Ag High-speed printing system having multiple slipping nips
JP2001353839A (ja) * 2000-04-14 2001-12-25 Komori Corp 印刷機械におけるローラの構造
DE10035786A1 (de) * 2000-07-22 2002-02-07 Koenig & Bauer Ag Feuchtwerk
DE102004006231B3 (de) * 2004-02-09 2005-08-04 Koenig & Bauer Ag Verfahren zum Transportieren von Feuchtmittel von einer ersten Walze an die Oberfläche eines Formzylinders einer Druckmaschine
DE102004056277A1 (de) * 2004-02-09 2005-09-08 Koenig & Bauer Ag Verfahren zum Verteilen eines von einer ersten Walze zur Oberfläche eines Formzylinders einer Druckmaschine zu transportierenden Feuchtmittels
DE102008003239B4 (de) * 2007-02-06 2015-12-03 Heidelberger Druckmaschinen Ag Verfahren zum Betreiben eines Feuchtwerks einer Druckmaschine
US8419179B2 (en) * 2011-06-30 2013-04-16 Xerox Corporation Methods for UV gel ink leveling and direct-to-substrate digital radiation curable gel ink printing, apparatus and systems having leveling member with a metal oxide surface
US8764179B2 (en) 2011-07-08 2014-07-01 Xerox Corporation Methods for radiation curable gel ink leveling and direct-to-substrate digital radiation curable gel ink printing, apparatus and systems having pressure member with hydrophobic surface

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106154A (en) * 1963-01-08 1963-10-08 Miller Printing Machinery Co Dampener for printing presses
US3517613A (en) * 1967-03-28 1970-06-30 Baeuerle Gmbh Mathias Offset printing machine with interchangeable application and etching rollers
US3673959A (en) * 1970-04-22 1972-07-04 North American Rockwell Dampening system for lithographic printing press
DE2745330A1 (de) * 1977-10-06 1979-07-26 Cigardi Omc Sa Offset-druckmaschine mit wahlweise mit wasser bzw. einem gemisch von wasser und alkohol arbeitendem feuchtwerk
GB2082121B (en) * 1980-08-14 1984-11-28 Komori Printing Mach Water supply apparatus for printing press
JPS57123061A (en) * 1981-01-22 1982-07-31 Komori Printing Mach Co Ltd Damping device for press
DE3336875A1 (de) * 1983-10-11 1985-04-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum befeuchten von druckplatten in rotationsdruckmaschinen
JPH02130148A (ja) * 1988-11-10 1990-05-18 Toshiba Mach Co Ltd 印刷機用湿し水供給装置
FR2663588B1 (fr) * 1990-06-21 1992-10-09 Marinoni Harris Sa Systeme de mouillage a film pour presse offset rotative.
JPH05360U (ja) * 1991-06-20 1993-01-08 株式会社アツギユニシア 内径クランプ装置
DE4125012A1 (de) * 1991-07-27 1993-01-28 Koenig & Bauer Ag Einrichtung zum befeuchten von zylindern bei offsetrotationsdruckmaschinen

Also Published As

Publication number Publication date
EP0719639A2 (fr) 1996-07-03
JPH08230142A (ja) 1996-09-10
JP3167606B2 (ja) 2001-05-21
US5649481A (en) 1997-07-22
DE59508003D1 (de) 2000-04-20
DE4447178A1 (de) 1996-07-04
EP0719639A3 (fr) 1997-03-19

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