EP0663290B1 - Entraínement pour un dispositif de raclage à mouvement alternatif transversal - Google Patents

Entraínement pour un dispositif de raclage à mouvement alternatif transversal Download PDF

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Publication number
EP0663290B1
EP0663290B1 EP95100294A EP95100294A EP0663290B1 EP 0663290 B1 EP0663290 B1 EP 0663290B1 EP 95100294 A EP95100294 A EP 95100294A EP 95100294 A EP95100294 A EP 95100294A EP 0663290 B1 EP0663290 B1 EP 0663290B1
Authority
EP
European Patent Office
Prior art keywords
drive according
doctor blade
working cylinder
reciprocating
computer
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
EP95100294A
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German (de)
English (en)
Other versions
EP0663290A1 (fr
Inventor
Ulrich Denk
Horst Anders
Ralf Dr. Schädlich
Dieter Ringsleben
Stephan Leissner
Jochen Junghans
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 EP0663290A1 publication Critical patent/EP0663290A1/fr
Application granted granted Critical
Publication of EP0663290B1 publication Critical patent/EP0663290B1/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
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1009—Doctors, scrapers, or like devices with reciprocating movement

Definitions

  • the invention relates to a drive for an oscillating doctor device according to the preamble of claim 1.
  • a mechanical doctor blade drive is known (DE 32 47 679 A1), in which the Traversing movement by a circumferentially driven one circumferential, axially deflected with respect to a radial plane, into the a sliding block against twisting connected to the squeegee secured bush engages, equipped spindle is generated.
  • the mechanical squeegee drive is at risk of wear due to the sliding connection and inevitably with a wear dependent, itself especially in the reversal points of the squeegee due to its extended standstill game with negative effects on the squeegee process. Furthermore the reversal points are always in the same place, so both increased squeegee wear and scoring on the roller to be inked are favored.
  • the squeegee drive takes place via a shaft on the two Couplings attached with counter-rotating drive wheels are, which are alternately coupled to a drive wheel, the Direction of rotation of the drive wheels is opposite.
  • the wave owns at the other end a transport thread, which has a coupling bush is connected to a squeegee holder.
  • the size of the squeegee stroke can also be adjusted in this solution, however, the reversal points are always present after the respective setting the same place.
  • DE-B-10 38 066 shows a hydraulic doctor drive, in which the Reversal triggered by stops carried during the squeegee movement becomes.
  • the effective position of the stops can be changed with cams and thereby the amplitude of the doctor stroke can be trimmed symmetrically in a sinusoidal manner.
  • FR-A-2 284 451 provides a hydraulic traversing drive for a distribution roller an inking unit.
  • a programmable controller By means of a programmable controller, reference is made to the angular position of the impression cylinder the speed curve of the Axial movement of the roller is controlled to increase the amount of ink transferred influence.
  • the invention has for its object a drive for an iridescent Squeegee device according to the preamble of claim 1 to provide the largely a constant squeegee movement in the entire stroke range, a change of direction with minimal standstill and a stepless one Adjustment of the speed - possibly depending on the machine speed - as well as a reversal of the squeegee movement realized.
  • the invention ensures that the other requirements are met the task above all with relatively little effort a constant reversal point shift for the squeegee movement, so that in connection with the almost non-stop reversal of direction local squeegee wear and damage to the surface of the anilox roller in the form of grooves are avoided, which increases the service life of squeegees and Anilox roller increased to save costs.
  • This can be used for tax transactions adverse cycle time of the computer in an advantageous manner for an additional Relocation of the reversal points of the squeegee movement can be used.
  • a hydraulic servo valve is used to control the working cylinder Particularly suitable as it has particularly low traversing speeds are functionally reliable.
  • Fig. 1 shows an axially parallel to an anilox roller, not shown mounted doctor blade 1, with which the piston rod 2 one working cylinder 3 in which can be pressurized on both sides Traversing direction is fixedly connected by means of coupling 4.
  • the doctor blade carrier 1 has an anti-rotation device 6 and 6 guided in the frame 5 Holder 7; 8 for a working cylinder 9 operated by a pressure medium doctor blade holder which can be pivoted to the anilox roller relative to the doctor blade carrier 1 10th
  • the doctor blade 1 is with a position sensor 11 for two fixed to the frame a computer 12 connected sensors 13; 14 equipped.
  • the computer 12 is with a control unit 15 for in the pressure medium lines 16; 17 for the working cylinder 3 intermediate servo valve 18 coupled.
  • FIG. 2 shows a schematic representation of a solution designed according to FIG. 1, in which the squeegee is slidable in the form of a traversing shaft 19 on a cross member 20 fixed bearings 21; 22 stored and the working cylinder 3 aligned with its piston rod 2 coaxial to the traversing shaft 19 via the coupling 4 with the latter firmly connected to the cross member 20th is attached, the coupling 4 of two each separately on the Piston rod 2 or the traversing shaft 19 fastened axially to one another screwed drive plates 23; 24 exists.
  • an elastically deformable disk 25 can be arranged.
  • the cross member 20 between the frame walls 29; 30 of Frame is firmly screwed to it, this can also be used as a Cross member fixed between two pivoting the entire doctor device from the anilox roller, each pivotable in the frame walls 29; 30 mounted holders can be arranged.
  • the computer 12 which can also be integrated into a printing unit computer, for example, has the traversing speed v as an adjustable input variable, which may also be linked to the machine speed, and the control unit 15 connected to the computer, in addition to the traversing speed v, has the time t as output variables for the servo valve 18 , since within the by the sensors 13; 14 limited stroke range H from the working cylinder 3 to the direction reversal by the respective sensor 13; 14 partial stroke ranges T, which are continuously displaced in the same direction, including the associated reverse traversing movement T c shortened by the offset T v , are permanently programmed in the computer (FIG. 3). This means that with an increase in the traversing speed and thus the lifting speed of the working cylinder, the time for the latter to be pressurized is inevitably shortened.
  • a technically more complex control of the doctor carrier movement is instead of the sensors 13; 14 in Fig. 1 a dash-dotted, the computer over the entire stroke range H of the working cylinder 3 path impulses 31 to arrange, whereby the sub-areas T 1 to T 6 , including the associated retrograde traversing movements T c1 to T c5 , according to FIG. 5 different can be designed.

Landscapes

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

Claims (14)

  1. Dispositif d'entraínement pour un dispositif à racle à déplacement alternatif pour des cylindres tramés en tant que cylindres encreurs ou cylindres porte-plaques de presses rotatives à imprimer, comportant un support de racle qui est disposé de manière à être déplaçable parallèlement à l'axe du cylindre tramé et est actionné par un vérin hydraulique pouvant être alimenté des deux côtés par un fluide sous pression au moyen d'une soupape commandée, caractérisé en ce que deux capteurs (13 ; 14) sont couplés à un calculateur (12) qui, au moyen d'une unité de commande (15), commande une soupape de commande de débit en subdivisant la gamme de course de déplacement (H) du vérin hydraulique (3), qui est limitée par les capteurs (13 ; 14), en plusieurs gammes de courses partielles de déplacement (T) qui sont décalées respectivement d'une manière continue dans la même direction jusqu'au capteur respectif (13 ; 14), qui réalise une inversion de direction, le déplacement respectif de retour (Tc) lors du déplacement alternatif étant réduit à un décalage (Tv) dans la gamme de course partielle de déplacement (T).
  2. Dispositif d'entraínement pour un dispositif à racle à déplacement alternatif pour des cylindres tramés en tant que cylindres encreurs ou cylindres porte-plaques de presses rotatives à imprimer, comportant un support de racle (1) qui est disposé de manière à être déplaçable parallèlement à l'axe du cylindre tramé et est actionné par un vérin hydraulique (3) alimenté des deux côtés par un fluide sous pression au moyen d'une soupape commandée (18), caractérisé en ce qu'un dispositif de mesure de déplacement (31) pour la course de déplacement (H) du vérin hydraulique (3) est couplé à un calculateur (12) qui, au moyen d'une unité de commande (15), commande, conformément à un programme, une soupape de commande de débit en subdivisant en des gammes de courses partielles de déplacement (T1 à T6) pouvant être configurées à volonté, la gamme de course de déplacement prévue (H) du vérin hydraulique (3) en ce qui concerne le déplacement alternatif dans les deux sens.
  3. Dispositif d'entraínement selon la revendication 1 ou 2, caractérisé en ce que la soupape de commande de débit est une servosoupape hydraulique (18).
  4. Dispositif d'entraínement selon la revendication 1, caractérisé en ce que le point respectif de rebroussement (U1' à U6') du déplacement alternatif est décalé d'une manière aléatoire au cours de la durée du cycle du calculateur (12).
  5. Dispositif d'entraínement selon les revendications 1 à 4, caractérisé en ce que la vitesse (V) du déplacement alternatif est réglable en tant que grandeur d'entrée variable du calculateur (12).
  6. Dispositif d'entraínement selon la revendication 1 ou 2, caractérisé en ce que le calculateur (12) est relié, de manière à les commander, à plusieurs supports (1) de racles, dont les déplacements alternatifs sont synchrones.
  7. Dispositif d'entraínement selon la revendications 1 à 6, caractérisé en ce que le vérin hydraulique (3) est fixé par sa tige de piston (2) au support de racle (1) monté de manière à être déplacable, et est disposé conjointement avec ce support sur un support transversal.
  8. Dispositif d'entraínement selon la revendication 7, caractérisé en ce que le support transversal est constitué par une traverse (20) qui est disposée entre les parois (29 ; 30) du châssis et est fixée à ces parois.
  9. Dispositif d'entraínement selon la revendication 7, caractérisé en ce que le support transversal est disposé entre deux appuis montés de manière à pouvoir pivoter respectivement dans les parois (29 ; 30) du châssis, en étant solidement fixé à ces appuis.
  10. Dispositif d'entraínement selon les revendications 1 à 6, caractérisé en ce que le vérin hydraulique (3) et le support de racle (1) sont disposés ou montés, en étant alignés dans la direction du déplacement alternatif, sur des consoles fixées respectivement intérieurement des deux côtés sur les parois (29 ; 30) du châssis.
  11. Dispositif d'entraínement selon les revendications 1 à 10, caractérisé en ce que la tige de piston (2) du vérin hydraulique (3) est reliée axialement, sans jeu, au support de racle (1) au moyen d'un accouplement (4).
  12. Dispositif d'entraínement selon la revendication 11, caractérisé en ce que l'accouplement (4) est constitué de deux disques d'entraínement (23 ; 24), vissés l'un à l'autre et fixés sur la tige de piston (2) ou sur le support de racle (1) agencé de préférence sous la forme d'un arbre (19) de déplacement alternatif.
  13. Dispositif d'entraínement selon la revendication 12, caractérisé en ce qu'entre les disques d'entraínement (23 ; 24) est disposé un disque déformable élastiquement (25), qui compense un faible décalage entre l'axe de la tige de piston (2) et l'axe de l'arbre de déplacement alternatif (19).
  14. Dispositif d'entraínement selon l'une des revendications 1 à 13, caractérisé en ce que les capteurs (13 ; 14) ou le dispositif de mesure de déplacement sont solidaires du châssis, et un transmetteur de position (11) est disposé de manière à exécuter le déplacement de va-et-vient.
EP95100294A 1994-01-18 1995-01-11 Entraínement pour un dispositif de raclage à mouvement alternatif transversal Expired - Lifetime EP0663290B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4401328A DE4401328A1 (de) 1994-01-18 1994-01-18 Antrieb für eine changierende Rakelvorrichtung
DE4401328 1994-01-18

Publications (2)

Publication Number Publication Date
EP0663290A1 EP0663290A1 (fr) 1995-07-19
EP0663290B1 true EP0663290B1 (fr) 1998-08-12

Family

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EP95100294A Expired - Lifetime EP0663290B1 (fr) 1994-01-18 1995-01-11 Entraínement pour un dispositif de raclage à mouvement alternatif transversal

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EP (1) EP0663290B1 (fr)
DE (2) DE4401328A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50309331D1 (de) * 2003-11-14 2008-04-17 Fischer & Krecke Gmbh & Co Verfahren und Vorrichtung zum Verschieben eines Rakelmessers
DE102005061915A1 (de) * 2005-12-23 2007-07-05 Koenig & Bauer Aktiengesellschaft Verfahren zum Betreiben eines Kurzfarbwerkes und Einrichtung zu diesem Zweck
CN103240963A (zh) * 2013-05-31 2013-08-14 昆山欧莱特印刷机械工业有限公司 一种智能油墨刮刀系统
CN108909180B (zh) * 2018-06-28 2023-10-17 河南宝钢制罐有限公司 金属罐印刷机的油墨单元用传墨分割辊测试系统及方法
DE102019103790A1 (de) * 2019-02-05 2020-08-06 Koenig & Bauer Ag Druckwerk und Druckmaschine mit einem Druckwerk

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE512135C (de) * 1928-11-17 1932-02-26 Johannisberg G M B H Maschf Vorrichtung zum Laengsbewegen der Rakel an Rotationstiefdruckmaschinen
US2447090A (en) * 1944-01-14 1948-08-17 Goss Printing Press Co Ltd Rotary intaglio printing press
DE1038066B (de) * 1955-05-09 1958-09-04 Koenig & Bauer Schnellpressfab Hydraulischer Antrieb fuer die Rakel bei Tiefdruckmaschinen
DE1933838A1 (de) * 1969-07-03 1971-02-04 Windmoeller & Hoelscher Rakelvorrichtung fuer Tiefdruckmaschinen
CH551868A (de) * 1972-05-12 1974-07-31 Frankenthal Ag Albert Rakelvorrichtung an tiefdruck-rotationsmaschine.
DE2443504C3 (de) * 1974-09-11 1978-11-23 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Farbwerk an Druckmaschinen
US4398463A (en) * 1981-08-19 1983-08-16 Motter Printing Press Co. Non-repeat doctor blade drive
DE3220845C2 (de) * 1982-06-03 1985-02-21 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Antrieb einer Rakeleinrichtung
DE3247679A1 (de) * 1982-12-23 1984-07-05 Albert-Frankenthal Ag, 6710 Frankenthal Rakelantrieb

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Publication number Publication date
EP0663290A1 (fr) 1995-07-19
DE4401328A1 (de) 1995-07-20
DE59503099D1 (de) 1998-09-17

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