EP0425855B1 - Dispositif d'encrage dans une machine d'impression avec un rouleau applicateur à mouvement de va-et-vient - Google Patents

Dispositif d'encrage dans une machine d'impression avec un rouleau applicateur à mouvement de va-et-vient Download PDF

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Publication number
EP0425855B1
EP0425855B1 EP90119446A EP90119446A EP0425855B1 EP 0425855 B1 EP0425855 B1 EP 0425855B1 EP 90119446 A EP90119446 A EP 90119446A EP 90119446 A EP90119446 A EP 90119446A EP 0425855 B1 EP0425855 B1 EP 0425855B1
Authority
EP
European Patent Office
Prior art keywords
lever
inking unit
roller
stroke
applicator roller
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
EP90119446A
Other languages
German (de)
English (en)
Other versions
EP0425855A1 (fr
Inventor
Claus Simeth
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
Priority to AT90119446T priority Critical patent/ATE97611T1/de
Publication of EP0425855A1 publication Critical patent/EP0425855A1/fr
Application granted granted Critical
Publication of EP0425855B1 publication Critical patent/EP0425855B1/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
    • B41F31/15—Devices for moving vibrator-rollers

Definitions

  • the invention relates to an inking unit of a printing press with an oscillating, rotation-driven friction roller as a drive for a circumferential, likewise oscillating and rotation-driven applicator roller, the drive being effected via a lever which is pivotably mounted on both rollers and on which a pivot axis is formed between the two bearings.
  • Such inking units with oscillating application rollers which are axially displaced by the axial lifting movement of the distribution roller without a separate oscillation drive and are simultaneously driven to rotate by the distribution roller, have become known in numerous embodiments.
  • a complicated gear is provided for the drive from the friction roller to the applicator roller.
  • this is only possible when the machine is at a standstill and the conversion requires a noticeable amount of work, combined with a corresponding downtime of the machine.
  • the invention avoids these disadvantages. It is based on the task of an inking unit with the features mentioned at the beginning to propose in which the traversing stroke is infinitely adjustable, even while the machine is running and possibly without trial prints.
  • the invention is characterized in that the position of the pivot axis between the two bearings is adjustable.
  • the position of the pivot axis between the two bearings of the lever on the two rollers thus determines the transmission ratio of the drive between zero and a maximum value.
  • This position of the swivel axis can also be adjusted during operation of the machine by means of a suitable mechanism, so that the operator can, depending on the respective print image, adjust the distributor stroke while the machine is running, so that unusually little waste arises. This adjustment is infinitely possible and can therefore be done very sensitively.
  • the friction roller and the applicator roller move in opposite directions, so that a double stroke is set at a transmission ratio of 1: 1, which may also have advantages. As mentioned, the stroke can be continuously adjusted from zero to a maximum.
  • An important embodiment is characterized in that the position of the pivot axis of the lever is motor-controlled controlled by a scanner of the inking unit.
  • the scanner of the inking unit has a subroutine that determines the necessity and the size of the stroke for the application roller and passes this data on to an adjustment gear.
  • This arrangement results in a significant reduction in set-up times.
  • a decision as to whether and how large the lateral rubbing stroke must be can only be made after the trial prints to be hit.
  • the size of the stroke of the applicator roller cannot be changed while the machine is running.
  • a machine stop during the printing process always means a disturbance of the ink / water balance and thus fluctuations in the printing and thus an increased amount of waste.
  • a constructive embodiment of the invention is characterized in that a bearing forming the pivot axis of the lever is adjustable in a slot of the lever via a driven spindle. You turn the spindle in one direction or the other and this causes a nut sitting on the spindle to move in the slot in one direction or the other, which results in the desired setting of the pivot axis of the lever.
  • a friction roller 1 is axially displaced in the direction of the double arrow 2 in its bearings indicated at position 3 via a drive, not shown. At the same time, the friction roller is driven to rotate.
  • An applicator roller 4 bears against the friction roller. This should also be shifted axially via a drive to be described in more detail. A bearing of the applicator roller is indicated at position 5. It should be mentioned that the applicator roller is also driven to rotate by the friction roller because the two rollers abut against each other.
  • the drive essentially consists of a lever 6, the ends of which are pivotally mounted both on the shaft of the friction roller 1 and on the shaft of the applicator roller 4.
  • a roller is attached to both ends of the lever, which engages between rings on the shafts of the roller in question in such a way that the lever can be pivoted in the paper plane of Fig. 1 without the relevant shaft of the roller 1 or 4 on this to take an arched path.
  • the lever has a pivot axis 8.
  • the lever thus acts as a two-armed lever which can be pivoted about the axis 8 in the direction of arrow 9 in the plane of FIG. 1.
  • the lever 6 is pivoted clockwise and the application roller 4 is thereby moved to the left into the dashed line Position axially shifted in Fig. 1.
  • the pivot axis 8 is located centrally between the two pivot bearings 7, 7, then the displacement path 10 of the friction roller 1 corresponds to the displacement path 21 of the applicator roller 4.
  • the ratio of these displacement paths can be adjusted, however, and all that is required is the position of the pivot axis 8 along the Adjust lever 6 accordingly. If the pivot axis 8 is at the location of the lower pivot bearing 7, the stroke of the application roller 4 is zero.
  • the pivot axis 8 is in the vicinity of the upper pivot bearing 7, the maximum stroke 21 of the application roller 4 is present.
  • Fig. 2 shows details of this drive with adjustment mechanism. It should be mentioned that in Fig. 2 the friction roller and the application roller are only indicated in their cores; in reality, their circumferences abut one another, as can be seen from FIG. 1.
  • a spindle 11, on which a spindle nut 12 sits, which is extended downward to the bearing 18 of the pivot axis 8, serves for the drive for adjusting the pivot axis 8. If the spindle in its bearing 13 is rotated in one or the other direction of rotation, the nut 12 moves in the direction of the arrow 14 and thus also the bearing 18, which runs in an elongated hole 15 of the lever 6.
  • the bearing 7 engaging on the friction roller 1 is designed as a spherical bearing in order to prevent any occurring during adjustment Being able to pick up canting.
  • the lower bearing 7 is equipped with a driving roller 16.
  • the rollers 1 and 4 are axially displaced as a whole in their bearings 3 and 5 and a separation of the applicator roller 4 into a shaft and into an axially displaceable jacket, as is also chosen as a solution in the prior art, is not necessary . It can thus be seen that the stroke of the applicator roller 4 can, if desired, be made stronger than that of the friction roller 1, depending on where the pivot axis 8 of the lever 6 is placed. If the swivel axis is in the middle, the stroke is doubled. This increased stroke thus results in even smoother transitions between more and less color on the printed image.
  • An already existing scanner determines the necessity and the size of the stroke for the application roller in a subroutine. This data is forwarded to the adjustment gear. There they are converted, for example, into a corresponding rotation of the spindle 11 or also into the actuation of another drive for the adjustment of the swivel axis 8.
  • the friction stroke can thus be set immediately by motor via the scanner data, in a motorized fine adjustment from the control panel. This is also a great advantage compared to the known systems, in which the stroke can only be adjusted on the roller itself.

Landscapes

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

Claims (4)

  1. Unité d'encrage d'une imprimante comportant un rouleau de transfert (1), amovible et entraîné en rotation, en tant qu'entraînement d'un rouleau toucheur (4), se trouvant à sa périphérie, également amovible et entraîné en rotation, l'entraînement étant effectué par l'intermédiaire d'un levier (6) qui est monté, de façon à pouvoir pivoter, sur les deux rouleaux (1,4) et sur lequel est agencé un axe pivotant (8) entre les deux paliers (7,7),
    caractérisée en ce que la position de l'axe pivotant (8) entre les deux paliers (7,7) peut être réglée.
  2. Unité d'encrage selon la revendication 1,
    caractérisée en ce que la position de l'axe pivotant (8) du levier (6) peut être réglée de façon motorisée, en étant commandée par des données d'un scanner à plaque.
  3. Unité d'encrage selon la revendication 2,
    caractérisée en ce que le réglage de façon motorisée est effectué à partir du pupitre de commande de l'unité d'encrage ou de la machine.
  4. Unité d'encrage selon l'une des revendications 1 à 3,
    caractérisée en ce qu'un palier formant l'axe pivotant (8) du levier (6) peut être réglé dans un trou oblong (15) du levier (6) par l'intermédiaire d'un arbre entraîné (11).
EP90119446A 1989-10-12 1990-10-10 Dispositif d'encrage dans une machine d'impression avec un rouleau applicateur à mouvement de va-et-vient Expired - Lifetime EP0425855B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90119446T ATE97611T1 (de) 1989-10-12 1990-10-10 Farbwerk einer druckmaschine mit einer changierenden auftragswalze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934067A DE3934067C2 (de) 1989-10-12 1989-10-12 Farbwerk einer Druckmaschine mit einer changierenden Auftragwalze
DE3934067 1989-10-12

Publications (2)

Publication Number Publication Date
EP0425855A1 EP0425855A1 (fr) 1991-05-08
EP0425855B1 true EP0425855B1 (fr) 1993-11-24

Family

ID=6391319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119446A Expired - Lifetime EP0425855B1 (fr) 1989-10-12 1990-10-10 Dispositif d'encrage dans une machine d'impression avec un rouleau applicateur à mouvement de va-et-vient

Country Status (6)

Country Link
EP (1) EP0425855B1 (fr)
JP (1) JPH07102697B2 (fr)
AT (1) ATE97611T1 (fr)
DE (2) DE3934067C2 (fr)
ES (1) ES2047797T3 (fr)
WO (1) WO1991005661A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE139802C (fr) *
DE3034644C2 (de) * 1980-09-13 1982-10-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbwerk mit changierenden Farbauftragswalzen
DE3243582C2 (de) * 1982-11-25 1984-09-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Verändern des axialen Hubes einer Verreibwalze in einer Druckmaschine
DD232882A1 (de) * 1984-12-27 1986-02-12 Polygraph Leipzig Verreibwalze in druckmaschinen
CS250525B1 (en) * 1985-09-17 1987-04-16 Mojmir Travnicek Device for inking unit's rubbing-down rollers' axial shifting
DE3638826A1 (de) * 1986-11-13 1988-05-26 Roland Man Druckmasch Lagerung fuer changierende auftragwalzen von druckmaschinen
JPS63264352A (ja) * 1987-04-22 1988-11-01 Komori Printing Mach Co Ltd 輪転印刷機のインキ振り装置
JPS6445641A (en) * 1987-08-17 1989-02-20 Komori Printing Mach Swing phase regulator for swing roller

Also Published As

Publication number Publication date
WO1991005661A1 (fr) 1991-05-02
ATE97611T1 (de) 1993-12-15
DE59003604D1 (de) 1994-01-05
JPH04500048A (ja) 1992-01-09
ES2047797T3 (es) 1994-03-01
DE3934067C2 (de) 1994-06-16
JPH07102697B2 (ja) 1995-11-08
EP0425855A1 (fr) 1991-05-08
DE3934067A1 (de) 1991-04-25

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