EP0408972A2 - Dispositif d'impression en offset - Google Patents

Dispositif d'impression en offset Download PDF

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Publication number
EP0408972A2
EP0408972A2 EP90112640A EP90112640A EP0408972A2 EP 0408972 A2 EP0408972 A2 EP 0408972A2 EP 90112640 A EP90112640 A EP 90112640A EP 90112640 A EP90112640 A EP 90112640A EP 0408972 A2 EP0408972 A2 EP 0408972A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
inking
diameter
shaft
plate cylinder
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
EP90112640A
Other languages
German (de)
English (en)
Other versions
EP0408972B1 (fr
EP0408972A3 (en
Inventor
Thomas John
Georg Bock
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
Publication of EP0408972A2 publication Critical patent/EP0408972A2/fr
Publication of EP0408972A3 publication Critical patent/EP0408972A3/de
Application granted granted Critical
Publication of EP0408972B1 publication Critical patent/EP0408972B1/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
    • B41F31/00—Inking arrangements or devices
    • B41F31/004—Driving means for ink rollers

Definitions

  • the invention relates to an offset printing unit with a blanket cylinder, a plate cylinder and an inking cylinder having a resilient working surface, each of which is supported by means of a shaft and is driven at the same speed as well as rolling against one another under mutual pressure.
  • the inking cylinder has a diameter corresponding to the effective working diameter of the printing form, that is to say the plate cylinder covered with one or more plates, and rotates at the same surface speed and in the area of the contact point with the same direction of rotation.
  • the invention has for its object to provide a printing unit of the type mentioned, in which a grinding movement between the plate cylinder and the Ink application cylinder is avoided even with larger axis spacing changes.
  • a blanket cylinder 1 is provided, which is mounted between side walls 3 and 4 by means of a shaft 2.
  • a plate cylinder 5 interacts with the blanket cylinder 1 and is supported in the side walls 3, 4 by means of a shaft 6.
  • Color is supplied to the plate cylinder 5 by means of an inking cylinder 7, which is also mounted on the side walls 3, 4 by means of a shaft 8.
  • an anilox roller 10, which is mounted on the side walls 3, 4 by means of a shaft 9, is provided, which guides the ink from an ink supply device (not shown) to the inking cylinder 7.
  • the blanket cylinder 1 and the inking cylinder 7 are each mounted in eccentric bearings 11, 12 so that these parts can be placed against one another under pressure.
  • the eccentric bearings 11 and 12 are expediently designed as double eccentric bearings.
  • a drive gear 14 is placed, the pitch circle diameter equal to the pitch circle diameter one with it Intermeshing, on the while 6 mounted drive gear 15 is dimensioned.
  • the drive gear 14 is driven via two bevel gears 22, 23 by a shaft 24, which is not connected to a drive motor for the printing unit.
  • the blanket cylinder 1 is covered with a compressible blanket.
  • the diameter of this cylinder is therefore to be dimensioned such that it is slightly smaller than the pitch circle diameter of the gearwheel 14 after the rubber blanket has been placed on it - that is to say in the operational state.
  • the diameter of the plate cylinder 5 with the plate placed thereon is slightly larger than the pitch circle diameter of the drive gear 15.
  • the diameter differences of the two ready-to-use cylinders 1 and 5 are generally of a magnitude that permit direct engagement of the drive gears 14, 15, the teeth of which are designed to be shifted in profile.
  • a drive gear 16 is placed, which is laterally offset from the drive gear 15 so that both gears do not mesh with each other.
  • the drive gear 16 is in turn of the same pitch circle diameter as the drive gears 14 and 15.
  • the intermediate gear 17 meshes with a further intermediate gear 18, the teeth of which mesh with the teeth of the drive gear 15 in the intermediate gear 17.
  • the intermediate gear 18 is in engagement with the drive gear 16 of the inking cylinder 7.
  • the inking cylinder 7 is covered with a thick, resilient pad 19, for example a rubber layer made of an incompressible material, its diameter when ready for operation must be noticeably smaller than the diameter of the plate cylinder 5 can be carried out if the surfaces of the two cylinders are to move at the same speed at the point of contact.
  • the center distance a between the plate cylinder 5 and the inking cylinder 7 is therefore in the Operating position in which the two cylinders are placed against each other under pressure, so small that an engagement of equally large, meshing drive gears on the shafts 6 and 8 is no longer possible. Due to the offset arrangement of the drive gears 15 and 16, any desired center distance a can be provided.
  • the support 19 can be fixed or exchangeable on the inking cylinder 7.
  • a further drive gear 20 is firmly attached to the shaft 9. This meshes with a gear 21 which is loosely placed on the shaft 8 next to the drive gear 16 and which is still in engagement with the drive gear 15, that is to say has a smaller pitch circle diameter than the drive gear 16. From the drive gear 20, further elements of the printing unit, such as an ink pump, can be driven.
  • a blanket cylinder 30, a plate cylinder 31, an inking cylinder 32 and an anilox roller 33 are again provided, which are supported by means of shafts 34, 35, 36, 37 between side walls 38, 39 of the printing unit.
  • a drive gear 40 and a bevel gear 41 are fixedly mounted on the shaft 34.
  • the bevel gear 41 meshes with a further bevel gear 42 which is driven by a shaft 43 from the main drive of the printing unit.
  • the drive gear 40 meshes a drive gear 44 which is firmly seated on the shaft 35 of the plate cylinder. Both gears have the same pitch circle diameter, while the cylinders 30, 31, as in the previous exemplary embodiment, have different diameters.
  • the inking cylinder 32 is covered in this embodiment with a pad 48 made of a compressible material, for example layers of rubber, one of which contains air bubbles.
  • the diameter of the ready-to-use inking cylinder 32 is larger than that of the ready-to-use plate cylinder 31 so that no grinding movement occurs during operation to get at the point of contact.
  • the shaft 36 of the inking cylinder 32 is fixedly connected to a drive electric motor 45. This motor is adjustable so that the inking cylinder 32 can be driven at the same speed as the cylinders 30, 31.
  • a gear 46 is loosely rotatable, which meshes on the one hand with the drive gear 44 and on the other hand with a drive gear 47 on the shaft 37 of the anilox roller 33.
  • the gear 46 has a larger pitch circle diameter than the drive gear 44 in order to bridge the center distance b, which is so large that it no longer enables a direct engagement of two intermediate gears placed on the shafts 35, 36 of the same pitch circle diameter. This in turn ensures that the drive transmission chain can also easily drive the anilox roller 33 and any downstream elements of the printing unit.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP90112640A 1989-07-08 1990-07-03 Dispositif d'impression en offset Expired - Lifetime EP0408972B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3922559A DE3922559C2 (de) 1989-07-08 1989-07-08 Offsetdruckwerk
DE3922559 1989-07-08

Publications (3)

Publication Number Publication Date
EP0408972A2 true EP0408972A2 (fr) 1991-01-23
EP0408972A3 EP0408972A3 (en) 1991-07-24
EP0408972B1 EP0408972B1 (fr) 1994-03-30

Family

ID=6384617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112640A Expired - Lifetime EP0408972B1 (fr) 1989-07-08 1990-07-03 Dispositif d'impression en offset

Country Status (5)

Country Link
US (1) US5009158A (fr)
EP (1) EP0408972B1 (fr)
JP (1) JPH0342247A (fr)
CA (1) CA2020083C (fr)
DE (2) DE3922559C2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908243U1 (de) * 1989-07-06 1989-08-17 MAN Roland Druckmaschinen AG, 6050 Offenbach Offsetdruckwerk
US6374734B1 (en) 1989-10-05 2002-04-23 Heidelberger Druckmaschinen Ag Tubular printing blanket
US5429048A (en) * 1989-10-05 1995-07-04 Gaffney; John M. Offset lithographic printing press
JPH0755556B2 (ja) * 1991-11-16 1995-06-14 株式会社東京機械製作所 分割版胴を有するｂｂ型印刷機
US5345865A (en) * 1993-04-07 1994-09-13 Dahlgren Usa, Inc. Hickey removal system
DE19519141A1 (de) * 1995-05-30 1996-12-05 Fischer & Krecke Gmbh & Co Flexodruckmaschine mit variabler Drucklänge
ATE327099T1 (de) * 2001-03-26 2006-06-15 Koenig & Bauer Ag Antrieb eines druckwerks
DE10144563A1 (de) * 2001-09-11 2003-03-27 Heidelberger Druckmasch Ag Druckmaschine und Verfahren zum Betreiben eines Farbwerks
CN110962440A (zh) * 2019-12-06 2020-04-07 海盐国宏印刷有限公司 减少空白间隙的印刷机
CN112339426A (zh) * 2020-10-28 2021-02-09 广水市众诚机械有限公司 一种用于曲面胶印机的墨站动力系统

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2036835A (en) * 1933-12-08 1936-04-07 Miehle Printing Press & Mfg Transfer method and means
US2136683A (en) * 1936-03-21 1938-11-15 Egry Register Co Printing machine
US2301379A (en) * 1941-04-16 1942-11-10 Willis G Davis Indexing or synchronizing apparatus
US2573090A (en) * 1947-06-06 1951-10-30 Beasley French & Company Ltd Pivotal frame structure for rotary printing machine elements
US3026798A (en) * 1960-03-15 1962-03-27 George O Frostad Printing apparatus
US3139826A (en) * 1961-06-19 1964-07-07 Phillips Petroleum Co Inking roller for printing machines
US3163109A (en) * 1963-01-21 1964-12-29 Faustel Inc Interchangeable gear drive means for rotary printing mechanism
US3191531A (en) * 1963-05-24 1965-06-29 Wood Newspaper Mach Corp Press drive means
FR1548329A (fr) * 1967-06-23 1968-12-06
US3585932A (en) * 1968-06-07 1971-06-22 Wallace H Granger Automatic inking system for rotary newspaper printing press
US3724047A (en) * 1969-03-12 1973-04-03 Minnesota Mining & Mfg Inking sleeve
US3590735A (en) * 1969-08-26 1971-07-06 Harris Intertype Corp Ductor roll accelerating mechanism
US3587463A (en) * 1970-05-18 1971-06-28 Wallace H Granger Simplified circulating inking system for rotary newspaper printing press
US3774537A (en) * 1970-07-15 1973-11-27 Stevens Corp Rotary offset printing press with removable plate cylinder unit
US4000242A (en) * 1972-07-26 1976-12-28 Crown Zellerbach Corporation Web material treating system including an inflatable platen roller
CA1029240A (fr) * 1973-08-01 1978-04-11 Harris Corporation Commande de presse d'imprimerie
US3910186A (en) * 1973-10-15 1975-10-07 American Bank Note Co Ink supply apparatus for intaglio printing press
US3930446A (en) * 1974-08-23 1976-01-06 Edmund W. Nulton Duplicator with web master
US4223603A (en) * 1979-01-10 1980-09-23 Didde-Glaser, Inc. Planetary inker for offset printing press
DE3117341C2 (de) * 1981-05-02 1988-07-07 Albert-Frankenthal Ag, 6710 Frankenthal Farbwerk
DE3232780C2 (de) * 1981-10-31 1986-02-06 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbwerk für Offsetdruckmaschinen
US4445433A (en) * 1982-04-02 1984-05-01 Menashe Navi Method and apparatus for variable density inking
US4428288A (en) * 1982-04-26 1984-01-31 Harper Corporation Of America Adjustable drive system for matching surface speeds of a transfer roll and plate roll and method thereof
JPS59204558A (ja) * 1983-05-09 1984-11-19 Tokyo Kikai Seisakusho:Kk 平版印刷用メツシユロ−ル

Also Published As

Publication number Publication date
DE3922559A1 (de) 1991-01-17
EP0408972B1 (fr) 1994-03-30
DE59005163D1 (de) 1994-05-05
DE3922559C2 (de) 1994-03-24
CA2020083C (fr) 1992-04-28
EP0408972A3 (en) 1991-07-24
JPH0342247A (ja) 1991-02-22
US5009158A (en) 1991-04-23
CA2020083A1 (fr) 1991-01-09

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