EP0182326A2 - Dispositif d'encrage - Google Patents

Dispositif d'encrage Download PDF

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Publication number
EP0182326A2
EP0182326A2 EP85114591A EP85114591A EP0182326A2 EP 0182326 A2 EP0182326 A2 EP 0182326A2 EP 85114591 A EP85114591 A EP 85114591A EP 85114591 A EP85114591 A EP 85114591A EP 0182326 A2 EP0182326 A2 EP 0182326A2
Authority
EP
European Patent Office
Prior art keywords
support rings
anilox roller
inking unit
roller
doctor blade
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.)
Withdrawn
Application number
EP85114591A
Other languages
German (de)
English (en)
Other versions
EP0182326A3 (fr
Inventor
Joachim Dorow
Klaus Engel
Pirmin Göbel
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.)
Albert Frankenthal AG
Original Assignee
Albert Frankenthal 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 Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0182326A2 publication Critical patent/EP0182326A2/fr
Publication of EP0182326A3 publication Critical patent/EP0182326A3/fr
Withdrawn legal-status Critical Current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
    • B41F31/20—Ink-removing or collecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers

Definitions

  • the invention relates to an inking unit, in particular a short inking unit, for printing presses, in particular offset printing machines, with an application roller which colors the printing form and an anilox roller which interacts with it and which is associated with an oscillating doctor blade, and, according to a further inventive idea, relates to a method for producing one suitable anilox roller.
  • a short inking unit of the type mentioned above is known from DE-A 31 17 341.
  • This short inking unit known per se, has largely proven itself in practice.
  • the doctor blade assigned to the anilox roller is a wear part, which is moved back and forth by means of a traversing device, for uniform wear
  • the reciprocating doctor blade moves with its end regions beyond the lateral edges of the anilox roller.
  • the doctor blade which is pressed against the anilox roller, will be bent in the area of the areas moved beyond the lateral ends of the anilox roller under the action of the contact forces. This can damage the squeegee and the edges of the anilox roller, which has an adverse effect on the mutual service life and thus the economy of the entire inking unit.
  • the anilox roller is provided with the same diameter, a smooth circumferential surface, laterally attached support rings, and that the length of the squeegee is about the traversing stroke shorter than the mutual distance between the outer end faces of the support rings.
  • the support rings can consist of hardened steel. This measure advantageously also enables the doctor blade to be adversely affected, since the hardness of the support rings ensures that even a doctor blade which is employed in a negative manner cannot damage the peripheral surface of the support rings.
  • the negative position of the doctor blade advantageously ensures that the doctor blade is practically independent of the hydrodynamic pressure on the anilox roller.
  • a further advantageous measure can consist in the fact that the support rings have broken, preferably rounded, radially outer edges in the region of their outer end faces. This measure results in protection of the lateral edge edges of the support rings.
  • the hardened steel support rings are first pulled onto the lateral pins of the anilox roller and clamped with the bale of the anilox roller, whereupon only the circumference of the support rings fits to grind the anilox roller.
  • the short inking unit shown in Figure 1 consists of an immersion roller 2 immersed in an ink fountain 1, an inking roller 4, which has the same diameter and is mounted on a plate cylinder 3 and is not shown, and an ink roller 4 which transfers the ink from the immersion roller 2 to the application roller 4 supporting anilox roller 5.
  • the applicator roller 4 is therefore supplied with a fountain solution in addition to the ink.
  • a dampening unit 6 is provided for this purpose.
  • the dipping roller 2 can be driven at a variable speed by means of an associated drive device 7.
  • the drive of the applicator roller 4 and the anilox roller 5 takes place with the peripheral speed of the printing form corresponding peripheral speed and is removed from the plate cylinder 3.
  • the application roller 4 has a soft surface, preferably made of rubber. The same applies to the dipping roller 2.
  • the anilox roller 5 arranged in between and rolling on the applicator roller 4 is formed by a steel roller with a central roller bale 8 and lateral bearing journals 9.
  • the roller bale 8 has an engraved circumferential surface with color-receiving depressions 10 indicated enlarged in FIG. 1 and webs 11 delimiting them.
  • a metering knife 12 is attached to the circumference of the dipping roller 2, which ensures a pre-dosing of the amount of ink applied to the anilox roller 5 in the opposite direction.
  • the excess ink which is not required for filling the ink-receiving recesses 10, is stripped from the periphery of the anilox roller 5 by means of a doctor blade 13 pressed against the circumference of the anilox roller 5 and supported practically by the webs 11.
  • the doctor blade 13 is moved back and forth in the axial direction.
  • the squeegee holder 14 is connected to a traversing gear, not shown here.
  • the anilox roller 5 In order to ensure that, despite the traversing movement of the doctor blade 13, there are no longer, unsupported end regions of the doctor blade 13 which is pressed against the anilox roller 5, the anilox roller 5, as can best be seen from FIG. 2, has support rings which are positioned laterally and delimit the roller barrel 8 15 provided, the width of which corresponds at least approximately to the stroke of the reciprocating doctor blade 13 indicated at H.
  • the length of the roller barrel 8 corresponds to the length of the other inking rollers.
  • the support rings 15 therefore do not shorten the roll barrel 8.
  • the support rings 15 have a smooth circumferential surface.
  • the diameter of the support rings 15 corresponds to the diameter of the roll barrel, so that there is a stepless surface line.
  • the length of the doctor blade 13 is shortened by approximately the width of the stroke H compared to the distance between the outer end faces of the lateral support rings 15. This ensures that the squeegee 13 is supported practically over its entire length in every position of its reciprocating movement and therefore cannot be bent over a lateral edge under the action of the contact forces.
  • the directions of rotation of the rollers are indicated by arrows in FIG. 1.
  • the squeegee 13 is placed under a blunt winekl in relation to the peripheral section of the associated anilox roller 5 arriving there. So it is a negative squeegee. This ensures that the doctor blade 13 is not lifted from the outer circumference of the anilox roller 5 by the hydrodynamic pressure acting on its tip, which ensures its reliable abutment of the doctor blade 13 on the outer circumference of the anilox roller 5 at all occurring speeds.
  • the support rings 15 have a hardened outer surface. In the illustrated embodiment, the support rings 15 are simply to be made from hardened tool steel.
  • the support rings 15 can simply be centered on the lateral journal 15.
  • the support rings 15 are provided with a corresponding centering bore 16.
  • tension screws 17, indicated by their center lines and arranged on a pitch circle with the same angular spacing, are provided, which engage in axial threaded roofs of the roll barrel 8.
  • the support rings 15, which can be removed by loosening the tensioning screws 17, are only attached to the roll barrel 8 after it has been engraved, which facilitates the production of the engraving extending over the entire length of the roll barrel 8.
  • the support rings 15 initially have a slight oversize in relation to the bale diameter and, in order to ensure an exact roundness and the same circumference with the bale 8, are ground to fit the bale 8 only after they have been mounted on the pin 15. In the event of uneven wear of the support rings 15 for wear of the bale 8, these can easily be replaced. To protect the outer marginal edges of the support rings 15, they can have bevelled or, as here, rounded transitions in the region of their outer end faces, as indicated in FIG. 2 at 18.
  • the support rings result in an extension of the total length of the anilox roller 5 compared to the region of the remaining rollers which generally guides the ink over the entire roller length and which corresponds to the length of the bale 8.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP85114591A 1984-11-23 1985-11-16 Dispositif d'encrage Withdrawn EP0182326A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843442662 DE3442662A1 (de) 1984-11-23 1984-11-23 Farbwerk
DE3442662 1984-11-23

Publications (2)

Publication Number Publication Date
EP0182326A2 true EP0182326A2 (fr) 1986-05-28
EP0182326A3 EP0182326A3 (fr) 1987-11-04

Family

ID=6250919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114591A Withdrawn EP0182326A3 (fr) 1984-11-23 1985-11-16 Dispositif d'encrage

Country Status (2)

Country Link
EP (1) EP0182326A3 (fr)
DE (1) DE3442662A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736331A2 (fr) * 1995-04-07 1996-10-09 Ltg Lufttechnische Gmbh Dispositif de réglage de la pression exercée sur le rouleau enducteur d'une machine d'enduction
EP0736330A2 (fr) * 1995-04-07 1996-10-09 Ltg Lufttechnische Gmbh Machine d'enduction
WO2000002729A2 (fr) * 1998-07-03 2000-01-20 Koenig & Bauer Ag Mecanisme d'encreur court pour machines d'imprimerie rotatives
EP0985529A2 (fr) * 1998-09-09 2000-03-15 Koenig & Bauer Aktiengesellschaft Procédé et dispositif pour vider un bac d'encrage à coins
EP1531043A1 (fr) * 2003-11-14 2005-05-18 Fischer & Krecke Gmbh & Co. Procédé et dispositif pour déplacer une racle
CN108501510A (zh) * 2018-05-07 2018-09-07 广东欧格精机科技有限公司 一种印刷或涂布机上的往复运动式封闭墨斗

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD283581A5 (de) * 1988-03-25 1990-10-17 Veb Kombinat Polygraph "Werner Lamberz" Leipzig,Dd Kurzfarbwerk
DE8913655U1 (de) * 1989-11-18 1989-12-28 MAN Roland Druckmaschinen AG, 6050 Offenbach Kurzfarbwerk mit einer Rasterwalze

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014303A (en) * 1933-07-22 1935-09-10 Weiss Adolph Rotary intaglio printing
CH477290A (de) * 1968-07-06 1969-08-31 Heidelberger Druckmasch Ag Bogen-Rotationsmaschine für Buch- oder Offsetdruck
US4246842A (en) * 1979-08-03 1981-01-27 Dayco Corporation Printing roller
EP0053277A1 (fr) * 1980-12-02 1982-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Cylindres pour groupes d'impression de presses rotatives
EP0064270A1 (fr) * 1981-05-02 1982-11-10 Albert-Frankenthal AG Dispositif d'encrage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB501924A (en) * 1937-09-08 1939-03-08 Thomas Shirley Foweraker Improvements in inking rolls
DE1790447U (de) * 1959-02-18 1959-06-18 Luitpold Kuisle Aufspannvorrichtung fuer klischee-dessin und tiefdruckzylinder auf steckachsen.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014303A (en) * 1933-07-22 1935-09-10 Weiss Adolph Rotary intaglio printing
CH477290A (de) * 1968-07-06 1969-08-31 Heidelberger Druckmasch Ag Bogen-Rotationsmaschine für Buch- oder Offsetdruck
US4246842A (en) * 1979-08-03 1981-01-27 Dayco Corporation Printing roller
EP0053277A1 (fr) * 1980-12-02 1982-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Cylindres pour groupes d'impression de presses rotatives
EP0064270A1 (fr) * 1981-05-02 1982-11-10 Albert-Frankenthal AG Dispositif d'encrage

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736331A2 (fr) * 1995-04-07 1996-10-09 Ltg Lufttechnische Gmbh Dispositif de réglage de la pression exercée sur le rouleau enducteur d'une machine d'enduction
EP0736330A2 (fr) * 1995-04-07 1996-10-09 Ltg Lufttechnische Gmbh Machine d'enduction
EP0736330A3 (fr) * 1995-04-07 1997-07-09 Ltg Lufttechnische Gmbh Machine d'enduction
EP0736331A3 (fr) * 1995-04-07 1997-07-09 Ltg Lufttechnische Gmbh Dispositif de réglage de la pression exercée sur le rouleau enducteur d'une machine d'enduction
WO2000002729A2 (fr) * 1998-07-03 2000-01-20 Koenig & Bauer Ag Mecanisme d'encreur court pour machines d'imprimerie rotatives
WO2000002729A3 (fr) * 1998-07-03 2000-05-04 Koenig & Bauer Ag Mecanisme d'encreur court pour machines d'imprimerie rotatives
EP0985529A2 (fr) * 1998-09-09 2000-03-15 Koenig & Bauer Aktiengesellschaft Procédé et dispositif pour vider un bac d'encrage à coins
EP0985529A3 (fr) * 1998-09-09 2000-06-28 Koenig & Bauer Aktiengesellschaft Procédé et dispositif pour vider un bac d'encrage à coins
EP1531043A1 (fr) * 2003-11-14 2005-05-18 Fischer & Krecke Gmbh & Co. Procédé et dispositif pour déplacer une racle
US7114437B2 (en) 2003-11-14 2006-10-03 Fischer & Krecke Gmbh & Co. Method and apparatus for shifting a doctor blade
EP1717026A3 (fr) * 2003-11-14 2007-05-02 Fischer & Krecke GmbH & Co. Procédé et dispositif pour déplacer une racle
CN108501510A (zh) * 2018-05-07 2018-09-07 广东欧格精机科技有限公司 一种印刷或涂布机上的往复运动式封闭墨斗

Also Published As

Publication number Publication date
EP0182326A3 (fr) 1987-11-04
DE3442662A1 (de) 1986-06-05

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Inventor name: GOEBEL, PIRMIN

Inventor name: DOROW, JOACHIM

Inventor name: ENGEL, KLAUS