EP0131107B1 - Dispositif d'encrage pour une machine d'impression - Google Patents

Dispositif d'encrage pour une machine d'impression Download PDF

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Publication number
EP0131107B1
EP0131107B1 EP84105188A EP84105188A EP0131107B1 EP 0131107 B1 EP0131107 B1 EP 0131107B1 EP 84105188 A EP84105188 A EP 84105188A EP 84105188 A EP84105188 A EP 84105188A EP 0131107 B1 EP0131107 B1 EP 0131107B1
Authority
EP
European Patent Office
Prior art keywords
ink
fountain roller
ink metering
ink fountain
contact
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
EP84105188A
Other languages
German (de)
English (en)
Other versions
EP0131107A3 (en
EP0131107A2 (fr
Inventor
Wolfgang Wildmann
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 AT84105188T priority Critical patent/ATE37686T1/de
Publication of EP0131107A2 publication Critical patent/EP0131107A2/fr
Publication of EP0131107A3 publication Critical patent/EP0131107A3/de
Application granted granted Critical
Publication of EP0131107B1 publication Critical patent/EP0131107B1/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
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B41F31/045—Remote control of the duct keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/12—Axially segmented ink blades

Definitions

  • the invention relates to an ink metering device for an inking unit of a printing press with a plurality of ink metering elements which can be set independently of one another by means of an actuating gear driven by a remotely controllable electric servomotor and which are provided with a cutting edge which limits the ink application to an ink fountain roller, the distance to the ink fountain roller being variable by the adjusting movement of the servomotor is.
  • a known ink metering device of the type specified (DE-PS 2 629 331) has a plurality of sliders attached to the ink fountain roller and movable individually to the latter, the adjustment of which is effected by an eccentric shaft which engages in a recess in the slider and which is rotated by the servomotor.
  • This known color metering device has proven itself in practice. It has been shown, however, that once a setting of a certain color profile has been found, it does not persist over a longer operating time, so that the slides need to be readjusted from time to time. This process is very time consuming and therefore undesirable.
  • the invention has for its object to provide a color metering device of the type mentioned, which is easier to adjust and when adjusted, disturbing influences by wear and other operational changes to the machine are compensated.
  • each ink metering element can be pressed against the ink fountain roller in its adjustment position by the force of a spring and can be lifted off the ink fountain roller by the actuator against the force, and in that the actuator on the ink metering element or on the ink fountain of the inking unit has only one force transmitting pair of stops is supported, which forms an electrical measuring contact for the control of the servomotor.
  • an ink metering device is created in which the position of the ink metering elements, in which their cutting edges bear against the ink fountain roller, is measured in a simple and precise manner by closing an electrical contact. This "zeroing" of the color metering elements then forms the starting variable for their precise setting.
  • This has the advantage that wear and other disruptive influences, such as operating temperature or bearing play, have no influence on the setting of the ink metering elements, since the actual position of the ink metering elements relative to the ink fountain roller is measured before the setting.
  • a further advantage of the ink metering device according to the invention is that empirically determined setting values for a specific printing process remain valid even after a longer operating time of the printing press, so that these values can be stored and the ink metering device can be set automatically.
  • a simplification of the setting of the ink metering device can be achieved in that the transmission characteristic of the actuating gear is linear.
  • the steps of the servomotor for generating a certain gap between the ink fountain roller and the cutting edge of the ink metering element remain the same over the entire setting range, and special consideration of the position of the actuating gear reached when the measuring contact is closed can be omitted.
  • a preferred embodiment of an ink metering device with ink metering elements designed as flat slides and movable radially to the ink fountain roller according to the invention is that a spring support is attached to the sliders at a first distance from the ink fountain roller and the actuating gear is attached at a second larger distance from the ink fountain roller, and that between The spring support and the actuating gear are arranged on a support attached to the ink fountain, which has on its side facing the actuating gear a stop designed as a mating contact for a contact surface of the actuating gear and on its opposite side a receptacle for a compression spring clamped between the spring support and the support.
  • the mating contact attached to the carrier can expediently consist of a contact plate which is supported by a rigid insulator.
  • the actuating gear has a threaded spindle which can be rotated by the servomotor and a nut which is screwed to the threaded spindle, secured against rotation and can be fastened to the ink metering element, the threaded spindle having an end face designed as a contact surface on a connector which can be connected to the ink fountain, a stop forming a counter contact can be applied.
  • a simple, high-precision actuator gearbox is combined in a cheap and space-saving manner with the pair of stops forming the measuring contact.
  • the threaded spindle and nut are advantageously braced against one another by a spring in the direction of force transmission.
  • a particularly advantageous method for operating a printing press that is equipped with an ink metering device according to the invention is that the ink metering elements are reset each time the machine is stopped, by using the starting variable for setting the preset setting values by moving the cutting edges the ink metering elements on the ink fountain roller is newly determined. Changes in the color gap caused by wear or other operating influences are compensated in this way for each machine stop.
  • the ink metering device according to the invention also enables a method for operating a printing press, in which, at certain time intervals during operation, one ink metering element after the other is briefly applied with its cutting edge to the inking roller and then adjusted again to the predetermined distance from the inking roller due to the newly determined initial size becomes.
  • This method has the advantage that the slight deformations of the ink fountain roller and the ink fountain that occur during operation can also be taken into account when setting the ink metering elements. Since only one ink metering element briefly leaves the specified setting position, the ink distribution in the inking unit is not disturbed thereby.
  • the force of the springs for pressing the ink metering elements onto the ink fountain roller is dimensioned in such a way that the ink fountain roller is not damaged.
  • the drawing shows an inking unit with an ink fountain roller 1 and an ink fountain lower part 2, which carries an ink slide 4 mounted in a guide rail 3.
  • the ink fountain upper part which receives the printing ink, is omitted in the drawing, since it would cover up the ink slide 4.
  • the color slide 4 is composed of a widened head part 5 with a cutting edge 6 and a shaft part 7 sliding in the guide rail 3.
  • a fastening screw 8 holds the ink slide 4 in contact with the ink fountain lower part 2, but without impairing its longitudinal displaceability.
  • the shaft part 7 In its central region, the shaft part 7 has an opening 9 which extends in its longitudinal direction and through which a support 11, which is fastened by means of a screw 10 to the lower part of the ink fountain, projects.
  • the carrier 11 Above the shaft part 7, the carrier 11 has on its side facing the ink fountain shaft 1 a spring plate 12 on which a compression spring 13 is supported, which rests with its opposite end on a spring plate 14 which is supported by a spring support 15 fastened to the shaft part 7 .
  • an insulator plate 16 which carries a contact plate 17, is fastened to the carrier 11.
  • the insulator plate 16 is made of a rigid material.
  • a threaded spindle 18 rests with its end face, which is screwed into a nut 19 fastened on the shaft part 7.
  • Spindle 18 and nut 19 form an actuating gear which is moved by a servomotor 21 via a reduction gear 20.
  • the end of the threaded spindle 18 facing away from the contact plate 17 is surrounded by a compression spring 22 which is supported on the nut 19 on the one hand and on a gearwheel 23 of the reduction gear 20 fastened to the spindle end.
  • Fig. 1 the ink slide 4 is shown in its working position during a printing process. In this position there is a gap 25 between the cutting edge 6 of the ink slide 4 and the ink fountain roller 1, the width of which is to be adjusted to the amount of ink required in the respective printing process in the area of the ink slide 4.
  • the gap 25 is maintained by the threaded spindle 18 supported on the contact plate 17 and the nut 19 by keeping the compression spring 13 tensioned and preventing the ink slide 4 from moving in the direction of the ink fountain roller 1.
  • a movement of the color slide 4 in the opposite direction and in the sense of an enlargement of the gap 25 is avoided by the force of the compression spring 13, the size of which is dimensioned such that it resists the hydrodynamic color bridges occurring on the cutting edge 6.
  • the starting point for the adjustment of the desired gap 25 is the cutting edge 6 on the ink fountain roller 1.
  • a change in the position of the ink slide relative to the ink fountain roller due to temperature or wear therefore has no influence.
  • the threaded spindle 18 is screwed into the nut 19 with its end facing the ink fountain roller 1 by appropriate control of the servomotor 21, so that the ink slide 4 is pushed by the compression spring 13 in the direction of the Ink fountain roller 1 is moved.
  • the configuration described is suitable for a wide variety of types of automatic inking unit controls.
  • the constantly repeated new determination of the zero position on which the setting is based achieves high setting accuracy and good reproducibility of tried and tested, advantageous setting values.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Dot-Matrix Printers And Others (AREA)

Claims (9)

1. Dispositif d'encrage pour le mécanisme d'encrage d'une machine d'impression, comportant plusieurs éléments d'encrage réglables indépendamment les uns des autres au moyen d'un mécanisme de réglage entraîné par un moteur de réglage électrique commandé à distance, qui sont munis d'une lame limitant l'application de l'encre sur un rouleau de l'encrier, dont la distance au rouleau de l'encrier varie sous l'effet du mouvement de réglage du moteur de réglage, caractérisé en ce que chaque élément d'encrage (4) peut, à sa position d'ajustage, être appuyé par la force d'un ressort (13) contre le rouleau de l'encrier (1) et être levé de ce rouleau par le mécanisme de réglage (18, 19, 20) en sens inverse de la force, et en ce que le mécanisme de réglage est appuyé sur l'élément d'encrage ou sur l'encrier (2) du mécanisme d'encrage par une paire de butées (17, 18) transmettant uniquement la force, qui forme un contact de mesure électrique pour la commande du moteur de réglage (21).
2. Dispositif d'encrage selon la revendication 1, caractérisé en ce que la caractéristique de transmission du mécanisme de réglage (18, 19, 20) est linéaire.
3. Dispositif d'encrage selon la revendication 1 ou 2 comportant des éléments d'encrage mobiles dans le sens radial par rapport au rouleau de l'encrier, conçus sous forme de coulisseaux plats, caractérisé en ce que sur les coulisseaux (4) sont fixés, à une première distance du rouleau de l'encrier (1) un appui de ressort (15) et, à une seconde distance plus grande du rouleau de l'encrier, le mécanisme de réglage (18, 19), et en ce qu'entre appui de ressort et mécanisme de réglage est agencé un support (11) fixé sur l'encrier (2), qui présente, sur sa face située du côté du mécanisme de réglage, une butée (18) sous forme de contre-contact (17) pour une surface de contact du mécanisme de réglage et, sur sa face opposée, un logement (12) pour un ressort de pression (13) encastré entre appui de ressort et support.
4. Dispositif d'encrage selon la revendication 3, caractérisé en ce que le coulisseau (1) présente une ouverture médiane (9) par laquelle le support (11) passe.
5. Dispositif d'encrage selon la revendication 3 ou 4, caractérisé en ce que le contre-contact est constitué d'une plaque de contact (17) supportée par un isolateur (16) rigide.
6. Dispositif d'encrage selon l'une des revendications précédentes, caractérisé en ce que le mécanisme de réglage présente une broche filetée effectuant une rotation sous l'effet du moteur de réglage (21) et un écrou (19) vissé avec la broche filetée (18), verrouillé contre la rotation et pouvant être fixé sur l'élément d'encrage, la broche filetée pouvant, par une face frontale formant une surface de contact, s'appuyer contre une butée pouvant être reliée avec l'encrier (2), constituant un contre-contact.
7. Dispositif d'encrage selon la revendication 6, caractérisé en ce que la broche filetée (18) et l'écrou (19) sont tendus vis-à-vis l'un de l'autre par un ressort (22) dans le sens de transmission de la force.
8. Procédé pour le fonctionnement d'une machine d'impression équipée d'un dispositif d'encrage selon l'une des revendications précédentes, caractérisé en ce qu'à chaque arrêt de la machine un nouveau réglage des éléments d'encrage (4) est effectué, la grandeur initiale de réglage des valeurs de réglage préalablement données étant déterminée à nouveau par l'approche des lames (6) des éléments d'encrage contre le rouleau de l'encrier (1).
9. Procédé pour le fonctionnement d'une machine d'impression équipée d'un dispositif d'encrage selon l'une des revendications 1 à 7, caractérisé en ce que à certains intervalles de temps pendant le fonctionnement, les éléments d'encrage (4) l'un après l'autre s'appuient pendant un court instant par leur lame (6) contre le rouleau de l'encrier puis, en raison de la nouvelle grandeur initiale ainsi déterminée, sont réglés à nouveau à la distance préalablement donnée par rapport au rouleau de l'encrier.
EP84105188A 1983-07-11 1984-05-08 Dispositif d'encrage pour une machine d'impression Expired EP0131107B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105188T ATE37686T1 (de) 1983-07-11 1984-05-08 Farbdosiereinrichtung fuer eine druckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324952A DE3324952C1 (de) 1983-07-11 1983-07-11 Farbdosiereinrichtung fuer eine Druckmaschine
DE3324952 1983-07-11

Publications (3)

Publication Number Publication Date
EP0131107A2 EP0131107A2 (fr) 1985-01-16
EP0131107A3 EP0131107A3 (en) 1986-10-29
EP0131107B1 true EP0131107B1 (fr) 1988-10-05

Family

ID=6203679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105188A Expired EP0131107B1 (fr) 1983-07-11 1984-05-08 Dispositif d'encrage pour une machine d'impression

Country Status (5)

Country Link
US (1) US4581994A (fr)
EP (1) EP0131107B1 (fr)
JP (1) JPS6089366A (fr)
AT (1) ATE37686T1 (fr)
DE (1) DE3324952C1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2906053B2 (ja) * 1987-12-22 1999-06-14 株式会社東京機械製作所 ドクターブレードの当接制御装置
DE3914831C3 (de) * 1989-05-05 1999-05-20 Roland Man Druckmasch Vorrichtung zum zonenweisen Einstellen eines Dosierspaltes einer Farbdosieranlage einer Druckmaschine
US5138944A (en) * 1991-09-03 1992-08-18 Heidelberg Harris Inc. Method and apparatus for setting respective positions of ink keys
DE4131679C1 (fr) * 1991-09-24 1993-04-08 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5628827A (en) * 1992-09-25 1997-05-13 Minnesota Mining And Manufacturing Company Non-recirculating, die supplied doctored roll coater with solvent addition
CA2167923C (fr) * 1993-08-20 2006-11-21 Robert P. Mccollam Coucheuse a rouleau a racle, alimentee par filiere, sans recirculation du fluide, a addition de solvant
DE19614191A1 (de) * 1996-04-10 1997-10-16 Heidelberger Druckmasch Ag Farbdosiereinrichtung für Farbwerke von Druckmaschinen
IT237845Y1 (it) * 1997-08-01 2000-09-29 Bea Italiana S P A Dispositivo portatile per inserire,entro sedi predefinite di un corpo,come un mobile,organi di vincolo e/o supporto di elementi portanti
US6067000A (en) * 1999-01-21 2000-05-23 Siemens Automotive Corporation Electromagnetic actuator upper spring assembly
JP2002210921A (ja) * 2001-01-18 2002-07-31 Komori Corp 印刷機のインキツボブレード原点位置調整方法及び装置
DE60109754T2 (de) * 2001-05-17 2006-02-09 Veslatec Oy Einstellmechanismus für Farbrakel

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US625318A (en) * 1899-05-23 And phila
US1778476A (en) * 1927-12-21 1930-10-14 Wood Newspaper Mach Corp Rigid-blade fountain adjustment
US2161943A (en) * 1938-01-17 1939-06-13 Carl D Baue Ink fountain
US3110254A (en) * 1959-07-24 1963-11-12 William F Davis Means for regulating fluid control apparatus
US3057294A (en) * 1959-09-09 1962-10-09 Linotype Machinery Ltd Inking systems for printing machines
BE601148A (fr) * 1960-03-09 1961-07-03 Pietro Mongitore Machine motrice et opératrice à piston avec arbre principal à lobes
DE2125288A1 (de) * 1971-03-22 1972-09-28 Polygraph Leipzig Kom F Polygr Verfahren und Einrichtung zur Fernbedienung von Stell- und Antriebsgliedern an Druckmaschinen
US3727550A (en) * 1971-09-13 1973-04-17 North American Rockwell Adjusting arrangement for ink fountain in printing press
US3747524A (en) * 1971-09-21 1973-07-24 Harris Intertype Corp Ink fountain key control system
US3978788A (en) * 1975-05-16 1976-09-07 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Ink metering assembly for printing press
US4058058A (en) * 1976-02-26 1977-11-15 George Hantscho Company, Inc. Ink fountain for printing presses
DE2629331C3 (de) * 1976-06-30 1979-03-08 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Farbdosiereinrichtung an Druckmaschinen
US4193345A (en) * 1977-04-01 1980-03-18 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Device for adjustment of the ink flow on printing press inking units
DE2728738B2 (de) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung zur Kontrolle und Regelung der Farbgebung an Druckmaschinen
DE2935489C2 (de) * 1979-09-03 1982-12-09 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Farbmessereinstelleinrichtung für Druckmaschinen, insbesondere Rotationsdruckmaschinen
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JPS5692068A (en) * 1979-12-27 1981-07-25 Toshiba Mach Co Ltd Controller for discharge of ink
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DE3211156A1 (de) * 1982-03-26 1983-10-06 Roland Man Druckmasch Farbdosiereinrichtung

Also Published As

Publication number Publication date
EP0131107A3 (en) 1986-10-29
US4581994A (en) 1986-04-15
JPS6089366A (ja) 1985-05-20
ATE37686T1 (de) 1988-10-15
EP0131107A2 (fr) 1985-01-16
JPH0449475B2 (fr) 1992-08-11
DE3324952C1 (de) 1985-02-14

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