EP0475890B1 - Dispositif d'essuyage pour le cylindre de plaque d'une machine d'impression en creux - Google Patents

Dispositif d'essuyage pour le cylindre de plaque d'une machine d'impression en creux Download PDF

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Publication number
EP0475890B1
EP0475890B1 EP91810636A EP91810636A EP0475890B1 EP 0475890 B1 EP0475890 B1 EP 0475890B1 EP 91810636 A EP91810636 A EP 91810636A EP 91810636 A EP91810636 A EP 91810636A EP 0475890 B1 EP0475890 B1 EP 0475890B1
Authority
EP
European Patent Office
Prior art keywords
wiping
cylinder
trough
adjusting
pivot axis
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
EP91810636A
Other languages
German (de)
English (en)
Other versions
EP0475890A1 (fr
Inventor
Georg Johann Lindner
Hans-Jürgen Zelfel
Johannes Georg Schaede
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.)
KBA Notasys SA
Original Assignee
De la Rue Giori SA
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 De la Rue Giori SA filed Critical De la Rue Giori SA
Publication of EP0475890A1 publication Critical patent/EP0475890A1/fr
Application granted granted Critical
Publication of EP0475890B1 publication Critical patent/EP0475890B1/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
    • B41F9/1018—Doctors, scrapers, or like devices using a wiping cylinder
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0072—Devices for measuring the pressure between cylinders or bearer rings
    • 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

Definitions

  • the invention relates to a wiper device for the plate cylinder of an intaglio printing machine according to the preamble of claim 1.
  • Such a wiper device is known from GB-A-793 790; the geometrical arrangement, according to which the pivot axis of the tub lies approximately in the plane passing through the axis of rotation of the wiper cylinder, which is parallel to the tangential plane of these two cylinders passing through the point of contact between the wiper cylinder and plate cylinder, can only be seen in the drawing.
  • This trough is mounted in the device frame by means of a stationary axis, and the force exerted by the adjusting device in the form of a screw spindle on the wiping cylinder is transmitted by means of a coil spring.
  • a pressure control system to provide, which has a force measuring device measuring the actual value of the contact pressure and a doctor blade carrier adjustable by a motor, this motor being controlled by the force measuring device in such a way that the contact pressure is kept constant at a manageable target value.
  • the invention has for its object to provide a wiping device in which the contact pressure with which the wiping cylinder rests on the plate cylinder is more precise and easier than before, in particular during printing operation, is adjustable and uniform over the entire length of the cylinder and which is a simple one Constant direct measurement of the contact pressure and thus pressure control enables the frictional forces between the wiper and plate cylinders to measure the pressure measurement as little or as little as possible affect.
  • a control of the contact pressure can preferably be carried out with the wiper device according to the invention, in that a force measuring device measuring the actual value of the contact pressure is provided and the adjusting device forms, together with this force measuring device, a pressure control system which keeps the contact pressure of the wiping cylinder constant at a predefinable setpoint value during operation .
  • the arrangement is preferably such that the contact pressure is transmitted to the tub by side actuating rods and that the end of each actuating rod facing away from the wiping cylinder is articulated on a sliding piece which is supported on an abutment, the bearing surface of which points to the longitudinal axis of the actuating rods Forms angle; this slider is displaceable on the support surface by an actuator.
  • a part of each actuating rod is preferably formed by a hydraulic cylinder which is subjected to a predeterminable pressure and which is used to turn the wiping cylinder on and off and to roughly adjust the contact pressure; the position of the slider then defines the pressure adjustment.
  • the plate cylinder 1 of an intaglio printing machine interacts with the wiper cylinder 2 of the wiper device.
  • the wiping cylinder 2 is partially immersed in a tub 4 filled with a cleaning liquid and is mounted with its pins 3 concentrically in bearings 3a which are mounted in the opposite side walls 4a of the tub 4.
  • Bearings 3a are preferably self-aligning bearings with plain bearings. The self-aligning bearings prevent the slide bearings from tilting and allow compensation when the pins 3 are inclined due to a deflection of the wiper cylinder 2.
  • trough 4 there are also the usual, schematically illustrated cleaning elements in the form of doctor blades 16 and brushes 17, which are on the wiper cylinder surface and clean them of paint.
  • Plate cylinder 1 and wiper cylinder 2 have the same direction of rotation F1 and F2, that is, opposite peripheral speeds at the point of contact.
  • the tub 4 is installed on a carriage 20 which can be displaced on a frame 18 of the printing press between a working position shown in FIG. 1, in which the wiping cylinder 2 rests on the plate cylinder 1, and an out-of-operation position, in which the wiping cylinder 2 extends from Plate cylinder 1 is moved.
  • Carrier parts 20a fastened on the slide 20 serve to support the base of the tub 4 when it is moved away. The displaceability of the slide 20 will be discussed later.
  • the tub 4 In the working position of the wiper cylinder 2, the tub 4 is mounted such that it can be tilted about a pivot axis 6, which lies in the lower region of the rear of the tub.
  • This pivot axis 6 is arranged in the plane T 'passing through the wiper cylinder axis of rotation, which is parallel to the tangential plane T going through the point of contact between the wiper cylinder 2 and plate cylinder 1; the direction of movement of the wiper cylinder circumference at the point of contact, as indicated by the direction of rotation F2, points downward, that is to say approximately to the pivot axis 6.
  • a bearing 15 designed as a self-aligning bearing with a pin 6a seated in the bearing opening 15a and two support rollers 22 provided on both sides of this bearing 15 on the tub 4 serve to support the wiping cylinder 2 and are supported in a freely rollable manner on inclined bearing surfaces 23.
  • the bearing 15 protrudes from the rear of the tub 4 and, as shown in FIG. 2, extends only in the central region of the tub 4.
  • the pin 6a is supported in supports 18a, 18b which rest on the frame 18 are attached.
  • the two support rollers 22 are mounted with their pins 6b in projections 21 which are attached to the tub 4.
  • the bearing surfaces 23 are formed by inclined surfaces of two supports 18c fastened to the frame 18.
  • the axes of the pins 6b of the two support rollers 22 and the axis of the pin 6a of the bearing 15 are aligned with one another and define the pivot axis 6.
  • the inclination of the bearing surfaces 23, which lie in a common plane, is selected such that they are at least approximately perpendicular to the mentioned plane T ', that is also perpendicular to the tangential plane T, are oriented.
  • the storage described ensures that the tub 4 is not only around the mentioned Pivot axis 6, in the sense of arrow F3 according to Figure 1, but also in the direction of arrow F3 'about a pivot axis 6' which is perpendicular to the first-mentioned pivot axis 6 and intersects the wiper cylinder axis of rotation.
  • the bearing surfaces 23 for the support rollers 22 could also be fastened to the slide 20, but the fastening to the frame 18 is more advantageous in order to achieve increased rigidity.
  • an adjusting rod is articulated to the tub 4 below the bearing 3a by means of a pin 5.
  • the other end of this adjusting rod 7 is articulated by means of a pin 9a on a slide 9, which can be pushed back and forth on a horizontal, flat abutment 10, which is formed by the surface of the slide 20, in the direction of the arrows F4, F5 ie the direction of displacement is parallel to a plane perpendicular to the wiper cylinder axis 3.
  • the actuating rod 7 forms an acute angle with the contact surface of the abutment 10.
  • An actuating device acting on the slider 9 is used to generate the contact pressure, which in the exemplary embodiment under consideration consists of an actuator 13 in the form of an electric servomotor and an actuating gear 12 driven by the latter with an adjusting spindle 11 which can be displaced in the longitudinal direction and is fastened to the slider 9.
  • the actuating gear 12 can in particular be a worm gear contain.
  • the actuating rods 7 can be rigid, one-piece arms.
  • the wiper cylinder 2 is pressed more strongly against the plate cylinder 1 by the adjusting rods 7, the trough 4 tilting upward about its pivot axis 6 in the direction of the curved arrow F3.
  • the movement of the tub 4 by means of the adjusting rods 7 is a superposition of two pivoting movements about the pivot axes 6 and 6 '.
  • the arrangement can, for example, be such that, starting from an initial position of the wiping cylinder 2, in which it presses against the plate cylinder 1 with a certain force, the adjustment range of the slider 9 is between -7.0 mm (in the sense of a reduction in the contact pressure) and + 5.6 mm (in the sense of increasing the contact pressure), and the corresponding adjustment range of the wiper cylinder is between approximately -2.0 mm and +1.5 mm.
  • the ratio of the adjustment ranges of the wiping cylinder 2 and the slider 9 thus corresponds to a reduction of the adjustment and of course depends on the angle between the longitudinal axis of the adjustment rods 7 and the contact surface of the abutment 10.
  • the contact pressure can easily be changed during printing.
  • the direction of action of the force exerted by the actuating rods 7 runs approximately perpendicular to the connecting line L between the pivot axis 6 and the point of application of this force, that is to say the pin 5.
  • the contact pressure of the wiping cylinder 2 is preferably kept at a predetermined constant value during operation of the printing press.
  • a force measuring device 8 is installed on each adjusting rod 7, which, as an actual value transmitter, belongs to a pressure control system and constantly reports the actual value of the contact pressure or the contact pressure.
  • the force measuring device can, for example, be a load cell with strain gauges, the deformation being converted into the detuning of a Wheathstone bridge and this detuning being measured with a measuring amplifier.
  • the described geometric arrangement of the pivot axis 6 to the wiper cylinder axis of rotation 3 has the advantage that the frictional forces between the wiper cylinder 2 and the plate cylinder 1 are practically negligible or only insignificant in the measurement of the contact pressure.
  • the actuator 13 is controlled as a function of the difference between this actual value and the predetermined target value of the contact pressure. This state of affairs is illustrated schematically in FIG. 1 by a line 14 leading from the force measuring device 8 to the actuator 13.
  • part of the actuating rod 7 consists of a hydraulic cylinder 7d, to which an arm 7e, which is articulated on the slider 9 and carries the force measuring device 8, is fastened.
  • the piston rod 7c of the piston of this hydraulic cylinder 7d is located at one end of a compression spring 7b, the other end of which acts on an arm 7a articulated on the pin 5.
  • the hydraulic cylinder 7d forms a practically rigid section of the actuating rod 7 and is subjected to a predetermined pressure in the working position of the wiper cylinder 2, which pressure can be, for example, 100 bar. With this hydraulic cylinder 7d, the contact pressure can therefore be roughly adjusted, while the fine adjustment or pressure control is carried out by moving the slide 9, as described above. At the same time, the hydraulic cylinder 7d serves to turn the wiping cylinder on and off.
  • the compression springs 7b bring about a resilient contact of the wiper cylinder 2 on the plate cylinder 1.
  • the compression springs 7b can also be dispensed with, in this case the piston rod of the hydraulic cylinder 7d is articulated directly on the tub 4.
  • the arrangement of the actuating rod 7, sliding piece 9 and adjusting device 11, 12, 13 described has the advantage that the adjusting device does not have to constantly absorb the strong contact pressure of the wiping cylinder 2, rather the wiping cylinder 2 is supported via the adjusting rods 7 and the sliding pieces 9 on the Abutment 10 from.
  • the wiping cylinder 2 can be moved away from the plate cylinder 1 when it is not in operation.
  • the tub 4 rests together with the sliders 9, the abutment 10 and the actuating device 11, 12, 13 on the sliding carriage 20, and the pin 6a is mounted in the supports 18a, 18b of the frame 18 so as to be longitudinally displaceable and adjustable, so that it can be pulled out of the bearing 15 to release the tub 4.
  • an actuating cylinder 19 is installed in the support 18a, on the piston 19a of which the pin 6a is attached.
  • the pin 6a With the piston 19a extended, the pin 6a is held in the working position shown, with the piston retracted in the retracted rest position, in which the pin 6a is removed from the opening 15a of the bearing 15.
  • the trough 4 can be moved by moving the carriage 20 in the frame 18 in the direction of arrow F6 from the working position shown in FIG. 1 to an out-of-service position moved away from the plate cylinder 1 and back to its working position.
  • the trough 4 is carried by the carrier parts 20a of the slide 20.
  • the pin 6a is inserted by the actuating cylinder 19 into the bearing 15 and the bearing opening of the support 18b, so that the tub can be tilted as described 4 is guaranteed.
  • the invention is not limited to the exemplary embodiments described, but rather allows for numerous variants with regard to the design of the trough and its storage, the adjusting rods and the adjusting device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (10)

  1. Dispositif d'essuyage pour le cylindre porte-plaques (1) d'une machine d'impression taille-douce avec un cylindre d'essuyage (2) et avec un bac (4) servant à recevoir le liquide de nettoyage et des éléments de nettoyage mécaniques, le cylindre d'essuyage (2) étant monté de manière rotative dans des parois latérales opposées (4a) du bac (4), le bac (4) étant lui-même monté de manière basculable autour d'un axe de pivotement (6) et étant soumis avec le cylindre d'essuyage (2) à l'action d'un dispositif de réglage (11, 12, 13), qui appuie le cylindre d'essuyage (2) avec une force réglable, autour de l'axe de pivotement (6) contre le cylindre porte-plaques (1), cet axe de pivotement (6) se trouvant au moins approximativement dans le plan (T') passant par l'axe de rotation (3) du cylindre d'essuyage et parallèle au plan (T) tangentiel au cylindre d'essuyage (2) et au cylindre porte-plaques (1) au point de contact entre ces deux cylindres, le sens de rotation de la périphérie du cylindre d'essuyage au point de contact étant dirigé à peu près vers l'axe de pivotement (6), caractérisé en ce que le bac (4) est monté au moyen d'un palier à balancier (15) et est muni des deux côtés de ce palier à balancier de rouleaux d'appui (22) qui s'appuient libres en rotation sur des surfaces-supports planes (23) approximativement perpendiculaires audit plan tangentiel (T), les axes de ces rouleaux d'appui (22) étant alignés et définissant avec le palier à balancier (15) ledit axe de pivotement (6), le bac (4) étant en outre basculable autour d'un deuxième axe de pivotement (6') perpendiculaire à l'axe de pivotement (6) et coupant l'axe de rotation du cylindre d'essuyage.
  2. Dispositif d'essuyage selon la revendication 1, caractérisé en ce que la direction d'action de la force exercée par le dispositif de réglage (11, 12, 13) est au moins approximativement perpendiculaire à la ligne de liaison (L) entre l'axe de pivotement (6) du bac (4) et le centre de poussée du dispositif de réglage (5).
  3. Dispositif d'essuyage selon la revendication 1 et 2, caractérisé en ce que la force exercée par le dispositif de réglage (11, 12, 13) est transmise par des tiges de réglage (7) montées des deux côtés du cylindre d'essuyage (2), ces tiges de réglage (7) agissant sur le bac (4).
  4. Dispositif d'essuyage selon la revendication 3, caractérisé en ce que le dispositif de réglage est constitué d'un engrenage de réglage (12) actionnant les tiges de réglage (7) et présentant de manière préférentielle un engrenage à vis sans fin et d'un entraînement de réglage (13) (de manière préférentielle un servo-moteur) actionnant cet engrenage de réglage.
  5. Dispositif d'essuyage selon la revendication 3 ou 4, caractérisé en ce que l'extrémité de chaque tige de réglage (7) non dirigée vers le cylindre d'essuyage (2) est articulée à un coulisseau (9) s'appuyant sur une butée (10) dont la surface de support forme un angle aigu avec l'axe longitudinal de la tige de réglage (7), et que ce coulisseau (9) est déplaçable sur cette surface de support par l'organe de sortie du dispositif de réglage (11, 12, 13) parallèlement à un plan orthogonal à l'axe du cylindre d'essuyage, cet organe de sortie étant de manière préférentielle une tige de réglage (11).
  6. Dispositif d'essuyage selon la revendication 5, caractérisé en ce qu'une partie de chaque tige de réglage (7) est constituée d'un vérin hydraulique (7d) pouvant être soumis à une pression constante prédéterminée.
  7. Dispositif d'essuyage selon l'une des revendications 1 à 6, caractérisé en ce que les forces exercées par le dispositif de réglage (11, 12, 13) sur le cylindre d'essuyage (2) sont transmises en intercalant des ressorts à pression (7b).
  8. Dispositif d'essuyage selon l'une des revendications de 1 à 7, caractérisé en ce qu'au moins un dynamomètre (8) est prévu pour mesurer la valeur réelle de la force d'application du cylindre d'essuyage (2) et que ledit dispositif de réglage (11, 12, 13) forme avec le dynamomètre (8) un système de régulation de pression maintenant la force d'application du cylindre d'essuyage (2) à une valeur désirée constante pendant le fonctionnement.
  9. Dispositif d'essuyage selon les revendications 4 et 8, caractérisé en ce que des dynamomètres (8) sont disposés sur chaque tige de réglage (7).
  10. Dispositif d'essuyage selon l'une des revendications 1 à 9, caractérisé en ce que le bac (4) est monté dans sa partie centrale sur un pivot (6a) formant l'axe de pivotement (6) au moyen dudit palier à balancier (15), saillant sur sa partie arrière, de manière préférentielle un palier à balancier, ce pivot (6a) étant monté sur le bâti (18) de la machine d'impression de manière déplaçable en direction longitudinale et étant réglable entre une position de fonctionnement pénétrant dans l'ouverture (15a) du palier (15) et une position de repos libérant palier (15) et bac (4) et que le bac (4) est monté avec le dispositif de réglage (11, 12, 13) dans ledit bâti (18) de façon à pouvoir être éloigné du cylindre de plaques (1), ledit pivot (6a) étant poussé dans ledit palier (15) lorsque le bac (4) est déplacé de sa position éloignée dans sa position de fonctionnement.
EP91810636A 1990-08-17 1991-08-13 Dispositif d'essuyage pour le cylindre de plaque d'une machine d'impression en creux Expired - Lifetime EP0475890B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2682/90 1990-08-17
CH2682/90A CH681875A5 (fr) 1990-08-17 1990-08-17

Publications (2)

Publication Number Publication Date
EP0475890A1 EP0475890A1 (fr) 1992-03-18
EP0475890B1 true EP0475890B1 (fr) 1995-06-14

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Application Number Title Priority Date Filing Date
EP91810636A Expired - Lifetime EP0475890B1 (fr) 1990-08-17 1991-08-13 Dispositif d'essuyage pour le cylindre de plaque d'une machine d'impression en creux

Country Status (12)

Country Link
US (1) US5152220A (fr)
EP (1) EP0475890B1 (fr)
JP (1) JP2869218B2 (fr)
KR (1) KR0163784B1 (fr)
CN (1) CN1049862C (fr)
AT (1) ATE123696T1 (fr)
AU (1) AU638913B2 (fr)
CA (1) CA2048489C (fr)
CH (1) CH681875A5 (fr)
DE (1) DE59105697D1 (fr)
RU (1) RU1838155C (fr)
UA (1) UA19146A (fr)

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EP2524805A1 (fr) * 2011-05-20 2012-11-21 KBA-NotaSys SA Système d'essuyage d'encre pour presse d'impression en creux
EP2524809A1 (fr) 2011-05-20 2012-11-21 KBA-NotaSys SA Ink wiping system for an intaglio printing press
EP2636527A1 (fr) 2012-03-09 2013-09-11 Kba-Notasys Sa Système d'essuyage d'encre d'une presse d'impression en creux et presse d'impression en creux le comprenant
EP3196019B1 (fr) * 2014-09-17 2020-04-08 Komori Corporation Procédé et dispositif de réglage de la pression de contact d'un rouleau d'essuyage d'imprimante en creux
US9950705B2 (en) * 2015-07-17 2018-04-24 Ford Global Technologies, Llc Hybrid vehicle and method of controlling an engine disconnect clutch for engine start-up
CN104998842B (zh) * 2015-07-23 2017-04-12 江苏大学 圆柱滚筒外表面擦拭装置
US9956782B2 (en) 2016-09-13 2018-05-01 Hewlett-Packard Development Company, L.P. Wiper with bias members
CN108339726A (zh) * 2018-04-11 2018-07-31 深圳市运泰利自动化设备有限公司 移动终端设备显示模组胶合后溢胶线自动擦胶机
CN109203673B (zh) * 2018-08-29 2023-09-15 滁州千字文印务有限公司 一种用于四色印刷机的气动力调节及预警装置
CN110065300B (zh) * 2018-12-13 2024-06-04 株洲三新包装技术有限公司 一种新型刮墨刀刀架
CN117019303B (zh) * 2023-10-09 2024-01-05 哈尔滨重齿传动设备有限公司 生物质圆盘粉碎机转筒支撑系统

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JPH028055A (ja) * 1988-06-28 1990-01-11 Nippon Baldwin Kk 印刷機のシリンダ洗浄装置及び方法
DE3886399T3 (de) * 1988-09-08 2002-07-04 Komori Corporation, Tokio/Tokyo Rakelvorrichtung für Tiefdruckmaschinen.

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RU1838155C (ru) 1993-08-30
UA19146A (uk) 1997-12-25
US5152220A (en) 1992-10-06
EP0475890A1 (fr) 1992-03-18
DE59105697D1 (de) 1995-07-20
KR0163784B1 (ko) 1999-03-30
CA2048489C (fr) 2001-06-12
ATE123696T1 (de) 1995-06-15
CH681875A5 (fr) 1993-06-15
AU8145791A (en) 1992-02-20
CN1049862C (zh) 2000-03-01
CN1058930A (zh) 1992-02-26
KR920004158A (ko) 1992-03-27
CA2048489A1 (fr) 1992-02-18
AU638913B2 (en) 1993-07-08
JP2869218B2 (ja) 1999-03-10
JPH04234650A (ja) 1992-08-24

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