EP0019073B1 - Dispositif d'encrage pour machine à imprimer - Google Patents

Dispositif d'encrage pour machine à imprimer Download PDF

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Publication number
EP0019073B1
EP0019073B1 EP80101792A EP80101792A EP0019073B1 EP 0019073 B1 EP0019073 B1 EP 0019073B1 EP 80101792 A EP80101792 A EP 80101792A EP 80101792 A EP80101792 A EP 80101792A EP 0019073 B1 EP0019073 B1 EP 0019073B1
Authority
EP
European Patent Office
Prior art keywords
inking device
inking
cylinder
roller
rollers
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
Application number
EP80101792A
Other languages
German (de)
English (en)
Other versions
EP0019073A1 (fr
Inventor
Ingo Köbler
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6071115&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0019073(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0019073A1 publication Critical patent/EP0019073A1/fr
Application granted granted Critical
Publication of EP0019073B1 publication Critical patent/EP0019073B1/fr
Expired 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
    • 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 an inking unit for a printing press with an inking unit cylinder, which forwards the ink supplied to a plate cylinder rotating at approximately the same surface speed and can be adjusted on the two inking rollers.
  • Such an inking unit is known from US-A-11 840 343.
  • the cylinder to be inked is supplied with ink via two inking unit rollers, fresh ink being supplied to one of the rollers via an inking unit roller rotating in opposite directions at the common gap, on which another inking unit roller rotating in the same direction at the gap is positioned, which also works with the other Inking roller is connected. Due to the opposite rotation at the mentioned gap, a certain doctoring and homogenization of the color profile already takes place.
  • the invention has for its object to provide a simply constructed space-saving inking unit of the type mentioned that provides a uniform thin layer of ink on the inking cylinder.
  • the inking unit comprises an ink fountain 1, to which the ink to be printed is fed in a manner known per se, not shown in such a way that the ink surface 2 is always approximately at the same height.
  • An ink fountain roller 3 is partially immersed in the ink surface 2.
  • the ink fountain roller 3 can be driven by means of an electric motor 4 via a belt drive 5 at a variable speed. Instead of the Rie. Another drive connection between the ink fountain roller 3 and the electric motor 4 can also be provided.
  • the ink fountain roller 3 is held at both ends in eccentric bearings 6.
  • the eccentric bearings 6 form an adjusting device with which the gap between the ink fountain roller 3 and an inking roller 10 can be adjusted.
  • the inking roller 10 is also in contact with an inking cylinder 7 and a second inking roller 13.
  • Each of the two inking rollers 10, 13 is driven via a belt drive 12 and 15 by a variable-speed electric motor 11 and 14, respectively.
  • a variable-speed electric motor 11 and 14 respectively.
  • the connection between each of the two inking unit rollers 10, 13 and the electric motor 11, 14 can also be configured in another known manner, there is also the possibility of the inking unit roller 10 from the electric motor 4, optionally with the engagement of a transmission gear, to drive.
  • the inking roller 10 is supported at both ends by means of an eccentric bearing 16 in an adjusting lever 8, which is pivotally mounted about an axis 18 aligned with the axis of the inking cylinder 7.
  • a spring 19 engages on the actuating lever 8, which tries to lift the inking roller 10 from the inking roller 13.
  • an adjusting screw 20 is provided with which the gap between the two inking rollers 10, 13 can be adjusted against the action of the spring 19.
  • the two eccentric bearings 16 act as an adjusting device for adjusting the gap between the inking roller 10 and the inking cylinder 7.
  • the second inking roller 13 is also adjustable at both ends by means of eccentric bearings 17.
  • the eccentric bearings 17 form an adjusting device with which the gap between the inking roller 13 and the inking cylinder 7 can be adjusted.
  • the inking cylinder 7 is directly connected to a plate cylinder 9. However, it is also possible to provide application rollers between the inking cylinder 7 and the plate cylinder 9.
  • the inking cylinder 7 is driven. The drive takes place in a manner known per se, not shown, from the drive of the plate cylinder 9, so that the inking cylinder 7 and the plate cylinder 9 rotate at approximately the same surface speed.
  • the diameters of the two inking rollers 10, 13 are smaller than half the diameter of the inking cylinder 7.
  • the inking roller 10 is mounted on the adjusting lever 8 by means of an axle pin 21.
  • a gearwheel 23 is firmly attached to the journal 21 and meshes with a worm 24, the axis 25 of which is mounted in a housing 26.
  • the housing 26 engages around the worm 25 and the gear 23 and is rotatable, but non-displaceable on the journal 21 in the axial direction.
  • the worm 24 carries a pin 27 on which the one end of a lever 28 is mounted, the other end of which is rotatably articulated on a pin 29.
  • the pin 29 is seated on a carrier 30 which is fixedly connected to the side wall 22.
  • the carrier 30 also has two guide rails 31, between which the lower end of the housing 26 is guided.
  • the inking roller 10 rotates about the axis AA, this movement is followed by the gear 23, which is non-rotatably mounted on the journal 21.
  • the screw 24 is rotated because the housing 26, in which the screw 24 is mounted, rotates due to the guide rails 31 cannot follow.
  • the pin 27 is also moved, so that the lever 28 articulated at the other end on the fixed pin 29 moves the housing 26 in or against the direction of the arrow a. Since the housing 26 is secured against displacement on the journal 21 by the rings 32, the movement in or against the direction of the arrow a is also followed by the journal 21 and thus the inking roller 10.
  • This measure thus achieves a traversing movement of the inking roller 10 .
  • the traversing movement can also be achieved by other means known per se.
  • the inking roller 13 can be formed iridescent.
  • the inking roller 13 is cooled.
  • the one journal 33 with which the inking roller 13 is mounted in a side wall 22, is provided with an inner bore 34.
  • the tube 35 opens into a head 36 of a cooling water supply line 37.
  • the annular cavity surrounding the tube 35 of the inner bore 34 opens into a head 38 of a cooling water discharge line 39.
  • the lines 37 and 39 and the heads 36 and 38 are at one with the Side wall 22 fixedly connected carrier 40 attached.
  • the heads 36, 38 are also sealed in a manner not shown in relation to the rotating journal 33 or the pipe 35, which is also rotating.
  • the cooling water enters the head 36 through the line 37 and from there through the pipe 35 and distributor bores 42 into the inner cavity 43 of the inking roller 13.
  • the cooling water can then enter through further holes 44 at the other end of the inking roller 13 into the annular cavity formed by the inner hole 34 around the pipe 35 and flow into the cooling water discharge line 39 via the holes 41 and the head 38.
  • any other known cooling device can also be used for this roller.
  • the inking roller 10 can also be provided with cooling.
  • the ink fountain roller 3 rotates at low speed in the direction of arrow b. It transports ink from the ink fountain 1 to the first inking roller 10.
  • the surface speed of the inking roller 10 can be set between a value which is only slightly above zero and a value which corresponds in its absolute size to the surface speed of the inking cylinder 7, while the inking roller 13 has a higher surface speed than the inking cylinder 7.
  • the ink layer is split in the ratio of the surface speeds.
  • a smaller part of the ink reaches the gap between the inking cylinder 7 and the inking roller 10 and the larger part to the gap between the inking roller 13 and the inking cylinder 7.
  • the ink layer on the inking cylinder 7 is evened out.
  • the ink layer thus uniformized on the inking cylinder 7 then arrives at the gap, which is also adjustable, for the second inking roller 13. As already mentioned, this inking roller 13 rotates at a surface speed that is greater than the surface speed of the inking cylinder 7.
  • the second inking roller 13 decreases more than half of the amount of ink present there and leads it away in the direction of arrow e.
  • This removed ink can at least partially flow back into the ink fountain 1 if a correspondingly large ink wedge has formed in the gap between the inking rollers 10 and 13.
  • the inking roller 13 can be assigned a doctor blade, which returns the entire amount of ink to the ink fountain 1.
  • the inking roller 10 first causes a rough removal or scraping of the relief present on the inking cylinder 7.
  • the inking rollers 10 and 13 are expediently cooled so that the heat can be dissipated immediately.
  • the layer thickness of the ink which the inking cylinder 7 supplies to the plate cylinder 9 can accordingly be adjusted by adjusting the gaps between the two inking rollers 10, 13 and between each of the inking rollers 10, 13 and the inking cylinder 7 in connection with changes in the surface speeds of the inking rollers 10 and 13 can be varied.
  • this cylinder can also be driven in an oscillating manner.
  • cooling the inking unit cylinder instead of the cooled inking unit rollers 10, 13.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (11)

1. Dispositif d'encrage pour machine à imprimer comportant un cylindre de dispositif d'encrage qui transfère l'encre amenée à un cylindre porte-clichés tournant à peu près à la même vitesse superficielle et duquel peuvent être approchés deux rouleaux de dispositif d'encrage, caractérisé par le fait qu'à chaque rouleau de dispositif d'encrage (10, 13) est adjoint un dispositif de réglage (16, 17) servant à régler l'interstice vis-à-vis du cylindre de dispositif d'encrage (7) et qu'à l'un des deux rouleaux de dispositif d'encrage (10) est adjoint un autre dispositif de réglage (8, 19, 20) servant à régler l'interstice vis-à-vis de l'autre rouleau de dispositif d'encrage (13), que le premier rouleau de dispositif d'encrage (10) peut être entraîné, au moyen d'un entraînement (11, 12) indépendant de l'entraînement de la machine à imprimer, à une vitesse superficielle variable, dirigée en sens inverse de la vitesse superficielle du cylindre de dispositif d'encrage (7), que le premier rouleau de dispositif d'encrage (10) est en contact avec un rouleau d'encrier (3) auquel est adjoint un dispositif de réglage (6) servant à régler l'interstice vis-à-vis du premier rouleau de dispositif d'encrage (10) et que le deuxième rouleau de dispositif d'encrage (13), faisant suite au premier rouleau de dispositif d'encrage dans le sens d'écoulement de l'encre, peut être entraîné au moyen d'un entraînement (14, 15) indépendant de l'entraînement de la machine à imprimer, à une vitesse superficielle variable, dirigée dans le même sens à l'interstice et supérieure à celle du cylindre de dispositif d'encrage 7.
2. Dispositif d'encrage selon la revendication 1, caractérisé en ce que la grandeur maximale de la vitesse superficielle du premier rouleau de dispositif d'encrage (10) est au maximum égale à la grandeur de la vitesse superficielle du cylindre de dispositif d'encrage 7.
3. Dispositif d'encrage selon l'une des revendications 1 et 2, caractérisé en ce que le cylindre de dispositif d'encrage (7) est entraîné, par l'intermédiaire d'une transmission, par l'entraînement du cylindre porteclichés (9).
4. Dispositif d'encrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le diamètre de chaque rouleau de dispositif d'encrage (10, 13) est inférieur à la moitié du diamètre du cylindre de dispositif d'encrage (7).
5. Dispositif d'encrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un des deux rouleaux de dispositif d'encrage (10, 13) est refroidi.
6. Dispositif d'encrage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le cylindre de dispositif d'encrage (7) est refroidi.
7. Dispositif d'encrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un des rouleaux de dispositif d'encrage (10, 13) est entraîné avec changement.
8. Dispositif d'encrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le cylindre de dispositif d'encrage (7) est entrainé avec changement.
9. Dispositif d'encrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le cylindre de dispositif d'encrage (7) peut être approché directement du cylindre porte-clichés (9).
10. Dispositif d'encrage selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'entre le cylindre de dispositiv d'encrage et le cylindre porteclichés sont prévus deux rouleaux toucheurs entraînés par frottement.
11. Dispositif d'encrage selon l'une quelconque des revendications précédentes, caractérisé en ce que les rouleaux de dispositif d'encrage (10, 13) sont disposés au-dessus de l'encrier (1), de telle sorte que l'encre en excès reflue directement à l'encrier (1).
EP80101792A 1979-05-18 1980-04-03 Dispositif d'encrage pour machine à imprimer Expired EP0019073B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792920152 DE2920152A1 (de) 1979-05-18 1979-05-18 Farbwerk fuer eine druckmaschine
DE2920152 1979-05-18

Publications (2)

Publication Number Publication Date
EP0019073A1 EP0019073A1 (fr) 1980-11-26
EP0019073B1 true EP0019073B1 (fr) 1983-11-09

Family

ID=6071115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101792A Expired EP0019073B1 (fr) 1979-05-18 1980-04-03 Dispositif d'encrage pour machine à imprimer

Country Status (5)

Country Link
US (1) US4290363A (fr)
EP (1) EP0019073B1 (fr)
JP (1) JPS55154166A (fr)
DD (1) DD150574A1 (fr)
DE (2) DE2920152A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445433A (en) * 1982-04-02 1984-05-01 Menashe Navi Method and apparatus for variable density inking
DD238574A1 (de) * 1985-06-25 1986-08-27 Polygraph Leipzig Verfahren und einrichtung zur beseitigung von putzen auf der druckplatte
DE3531433A1 (de) * 1985-09-03 1987-03-12 Heidelberger Druckmasch Ag Farbwerk fuer rotationsdruckmaschinen
FR2590205A1 (fr) * 1985-11-21 1987-05-22 Seailles Tison Sa Dispositif pour l'encrage d'une forme d'impression rotative a partir d'une masse compacte d'encre a viscosite elevee
DE3623590A1 (de) * 1986-07-12 1988-02-04 Miller Johannisberg Druckmasch Filmfeuchtwerk fuer offsetdruckmaschinen
CA2049154C (fr) * 1990-09-14 1994-07-26 Glenn Alan Guaraldi Mecanisme d'alimentation en encre
FI88063C (fi) * 1990-10-12 1993-03-25 Valmet Paper Machinery Inc Anordning foer dosering av bestrykningsmedel pao ett roerligt underlag
DE19750960C2 (de) * 1996-11-26 2002-08-14 Roland Man Druckmasch Filmfarbwerk für eine Rotationsdruckmaschine
JP4582867B2 (ja) * 2000-06-23 2010-11-17 株式会社小森コーポレーション 印刷機
USRE40160E1 (en) * 2001-09-07 2008-03-25 Heidelberger Druckmaschinen Ag Method for controlling a quantity of medium transferable between two rollers
DE10143827A1 (de) * 2001-09-07 2003-03-27 Heidelberger Druckmasch Ag Verfahren zur Steuerung der Übertragung einer Mediummenge zwischen zwei Walzen
US20050183598A1 (en) * 2004-02-23 2005-08-25 Epic Products International Corporation Ink form roller drive for improving printing quality
US9044931B2 (en) * 2012-06-13 2015-06-02 Xerox Corporation Apparatus and method for applying a release agent to a substrate having a print image

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1262709A (en) * 1916-06-19 1918-04-16 Goss Printing Press Co Ltd Ink-transferring mechanism.
US1419189A (en) * 1918-10-09 1922-06-13 Wood Newspaper Mach Corp Continuous ink-distributing mechanism
DE547992C (de) * 1927-12-10 1932-04-05 Michael Klimroth Farbwerk fuer Tiefdruckmaschinen
US1840343A (en) * 1929-05-16 1932-01-12 Wood Newspaper Mach Corp Intermediate pick-up roll for inking mechanism
US2971460A (en) * 1959-03-30 1961-02-14 George H Shindle Method and apparatus for automatic temperature control of rotary printing press ink rollers
US3986452A (en) * 1960-05-02 1976-10-19 Dahlgren Manufacturing Company, Inc. Liquid applicator for lithographic systems
FR1401718A (fr) * 1964-07-03 1965-06-04 Zeuthen & Aagaard As Dispositif d'encrage, en particulier pour machines d'impression offset
US3433155A (en) * 1965-09-13 1969-03-18 Harris Intertype Corp Mechanism for applying a coating to a plate
US3467008A (en) * 1967-01-31 1969-09-16 Julius A Domotor Means and method for removing foreign particles from lithographic press
DE2052806A1 (de) * 1970-10-28 1972-05-04 Koenig & Bauer Schnellpressfab Farbwerk fur Druckmaschinen
US4130057A (en) * 1977-10-25 1978-12-19 Roland Offsetmaschinenfabrik Faber & Schleicher Ag. Dampening system for printing presses, particularly offset printing presses

Also Published As

Publication number Publication date
DE2920152A1 (de) 1980-11-27
US4290363A (en) 1981-09-22
DD150574A1 (de) 1981-09-09
EP0019073A1 (fr) 1980-11-26
DE3065498D1 (en) 1983-12-15
JPS55154166A (en) 1980-12-01

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