EP0719639B1 - Feuchtwerk für eine Druckmaschine - Google Patents
Feuchtwerk für eine Druckmaschine Download PDFInfo
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims 20
- 238000007645 offset printing Methods 0.000 claims 1
- 238000007598 dipping method Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
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)
Description
- Fig. 1
- eine schematische Darstellung mit einem Querschnitt eines erfindungsgemäßen Vierwalzen-Feuchtwerkes;
- Fig. 2
- eine Darstellung entsprechend Fig. 1, jedoch mit einem alternativen Antrieb der Feuchtreibwalze.
- 1
- Vierwalzen-Feuchtwerk
- 2
- Tauchwalze (1)
- 3
- übertragwalze (1)
- 4
- Feuchtreibwalze (1)
- 5
- Feuchtauftragwalze (1)
- 6
- Plattenzylinder
- 7
- Feuchtmittelkasten
- 8
- Feuchtmittel (7)
- 9
- -
- 10
- -
- 11
- -
- 12
- Elektromotor (2)
- 13
- -
- 14
- Getriebemotor (4)
- 15
- -
- 16
- Getriebemotor (26)
- 17
- Zahnrad (18; 21)
- 18
- Zahnrad (17; 19)
- 19
- Zahnrad (18; 22)
- 20
- -
- 21
- Zahnrad (4)
- 22
- Zahnrad (6)
- 23
- Berührungsbereich (5; 6)
- 24
- Berührungsbereich (4; 5)
- 25
- -
- 26
- Farbreibwalze
- 27
- Zahnrad (26)
- d2 bis d6
- Durchmesser (2 bis 6)
Claims (4)
- Feuchtwerk (1) für eine Offset-Rotationsdruckmaschine, bestehend aus einer mit einer wahlweisen Drehzahl antreibbaren mit einen Feuchtmittel beaufschlagten Tauchwalze (2), einer kunststoffbeschichteten Übertragwalze (3), einer mit feuchtmittelfreundlichem Material beschichteten Feuchtreibwalze (4) sowie einer Feuchtauftragwalze (5), welche mit einem Plattenzylinder (6) zusammenwirkt, wobei die Feuchtreibwalze (4) mit einer der Umfangsgeschwindigkeit des Plattenzylinders (6) jeweils proportionalen, jedoch ungleichen Umfangsgeschwindigkeit angetrieben wird, dadurch gekennzeichnet, daß die Umfangsgeschwindigkeit der Feuchtreibwalze (4) ungleich der jeweiligen Umfangsgeschwindigkeit der Übertragwalze (3) und der Tauchwalze (2) ist.
- Feuchtwerk nach Anspruch 1, dadurch gekennzeichnet, daß sich die Durchmesser (d6) von Plattenzylinders (6) zu Durchmesser (d5) der Feuchtauftragwalze (5), der Durchmesser (d5) der Feuchtauftragwalze (5) zu Durchmesser (d4) der Feuchtreibwalze (4), der Durchmesser (d4) der Feuchtreibwalze (4) zu Durchmesser (d3) der Übertragwalze (3) und der Durchmesser (d3) der Übertragwalze (3) zu Durchmesser (d2) der Tauchwalze (2) sich wie 1 zu (0,51 bis 0,88) zu (0,45 bis 0,7) zu (0,34 bis 0,75) zu (0,30 bis 0,60) verhalten.
- Feuchtwerk nach Anspruch 1, dadurch gekennzeichnet, daß sich die Umfangsgeschwindigkeiten von Plattenzylinders (6) zu Feuchtauftragwalze (5), Feuchtreibwalze (4), zu Übertragwalze (3) zu Tauchwalze (2) wie 1 : 1 : (0,4 bis 0,99) : (0,25 bis 0,4) : (0,08 bis 0,18) verhalten.
- Feuchtwerk nach Anspruch 1, dadurch gekennzeichnet, daß in dem aus Tauchwalze (2), Übertragwalze (3), Feuchtreibwalze (4) und Feuchtauftragwalze (5) bestehenden Walzenzug zwischen der Feuchtreibwalze (4) und der Feuchtauftragwalze (5) mindestens eine weitere, mit einem Zwangsantrieb (27; 16) versehene Walze (26) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4447178A DE4447178A1 (de) | 1994-12-30 | 1994-12-30 | Feuchtwerk für eine Druckmaschine |
DE4447178 | 1994-12-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0719639A2 EP0719639A2 (de) | 1996-07-03 |
EP0719639A3 EP0719639A3 (de) | 1997-03-19 |
EP0719639B1 true EP0719639B1 (de) | 2000-03-15 |
Family
ID=6537467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95120136A Expired - Lifetime EP0719639B1 (de) | 1994-12-30 | 1995-12-20 | Feuchtwerk für eine Druckmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US5649481A (de) |
EP (1) | EP0719639B1 (de) |
JP (1) | JP3167606B2 (de) |
DE (2) | DE4447178A1 (de) |
Families Citing this family (10)
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 |
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 |
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 |
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)
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 |
JPS57123061A (en) * | 1981-01-22 | 1982-07-31 | Komori Printing Mach Co Ltd | Damping device for press |
GB2082121B (en) * | 1980-08-14 | 1984-11-28 | Komori Printing Mach | Water supply apparatus for printing 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 |
-
1994
- 1994-12-30 DE DE4447178A patent/DE4447178A1/de not_active Ceased
-
1995
- 1995-12-20 EP EP95120136A patent/EP0719639B1/de not_active Expired - Lifetime
- 1995-12-20 DE DE59508003T patent/DE59508003D1/de not_active Expired - Fee Related
- 1995-12-22 US US08/577,342 patent/US5649481A/en not_active Expired - Fee Related
- 1995-12-27 JP JP34122995A patent/JP3167606B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08230142A (ja) | 1996-09-10 |
US5649481A (en) | 1997-07-22 |
JP3167606B2 (ja) | 2001-05-21 |
EP0719639A2 (de) | 1996-07-03 |
EP0719639A3 (de) | 1997-03-19 |
DE4447178A1 (de) | 1996-07-04 |
DE59508003D1 (de) | 2000-04-20 |
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