EP0040287B1 - Dispositif de dosage de l'encre dans un encrier pour machines à imprimer offset ou presses typographiques - Google Patents

Dispositif de dosage de l'encre dans un encrier pour machines à imprimer offset ou presses typographiques Download PDF

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Publication number
EP0040287B1
EP0040287B1 EP81100604A EP81100604A EP0040287B1 EP 0040287 B1 EP0040287 B1 EP 0040287B1 EP 81100604 A EP81100604 A EP 81100604A EP 81100604 A EP81100604 A EP 81100604A EP 0040287 B1 EP0040287 B1 EP 0040287B1
Authority
EP
European Patent Office
Prior art keywords
ink
metering
metering elements
support
elements
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
EP81100604A
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German (de)
English (en)
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EP0040287A1 (fr
Inventor
Willi Jeschke
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0040287A1 publication Critical patent/EP0040287A1/fr
Application granted granted Critical
Publication of EP0040287B1 publication Critical patent/EP0040287B1/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
    • 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 in an ink fountain for offset or high-pressure machines with metering and support areas arranged next to one another in the axial direction of the ink fountain roller, the metering areas being formed by metering elements which can be set to different ink gap thicknesses and are elastically mounted metering elements, so that the support areas are thus always directly under spring pressure or rest indirectly on the ink fountain roller, adjusting means being provided for adjusting the metering elements.
  • a color box of the type mentioned is known from DE-B 26 48 098, in which both support and metering areas are arranged on the individual zone-wide adjusting elements arranged next to one another in the axial direction of the ink box roller.
  • the storage of each individual control element on individual pressure bars that are resiliently supported on the ink fountain base enables the ink film thickness to be adjusted at any time via the metering ranges. Fluctuations in the color film thickness, e.g. prevented by non-circular running of the ink fountain roller. There is no mutual interference between adjacent zones.
  • the reproducibility of the ink film mentioned is indispensable especially for the remote control of the ink zones used in modern machine designs.
  • control elements since the control elements must be provided with both the support and the metering surfaces, very careful processing of the same is required. Furthermore, all control elements of the ink metering device must be mounted individually on the ink fountain, which results in a considerable assembly and adjustment effort for the ink metering device.
  • the invention is therefore based on the object, while maintaining the reproducibility and the zonal adjustment of the color film very essential advantages of a device according to DE-B 26 48 098, to create an ink metering device in an ink fountain for offset or high-pressure machines, which due to its constructive Design forms a compact, pre-adjustable unit, with which the manufacturing outlay is reduced and both the assembly and the adjustment work of the ink metering device are facilitated.
  • the advantages achieved by the invention are essentially to be seen in the fact that the ink metering device with the metering elements in the continuous support bar together with the adjusting means can be placed on the ink fountain as a fully assembled and optionally pre-adjusted unit, since there is the possibility of an adjustment or Zero adjustment of all dosing elements, e.g. on an appropriate test bench or similar device, before installing it in the ink fountain. Furthermore, the production of the dosing elements is simplified since the support areas are now also formed by the flexible support strip. Furthermore, the ink-free area created on the ink fountain roller is very limited. since on average only a single narrow support web is required for each dosing element, which facilitates the rubbing of the color-free strips.
  • the effectiveness of the device according to the invention is determined by an appropriate choice or combination of the rigidity of the elastic area of the bar and the hardness of the springs, which ensure that the support bar is in constant contact with the inking roller over the support webs.
  • this is covered by an elastic film, via which the support areas are constantly in contact with the ink fountain roller.
  • the film can deform in the metering areas to allow the desired passage of color.
  • the metering elements are designed as flat pieces and can be displaced tangentially to the ink fountain roller.
  • a further embodiment of the invention is characterized in that springs and electromagnets are assigned to the dosing elements as adjusting means, which continuously place them in pulsed form on the ink fountain roller during the ink supply and lift a certain gap, pulse frequency and stroke time being adjustable.
  • the ink fountain 1 shown in FIG. 1 with the ink metering device 2 attached to it is rotatably mounted on a joint 3 and can be pivoted away from the ink fountain roller 4.
  • the color metering device 2 which consists essentially of the elastic support bar 5, which is formed as flat pieces
  • Deten metering elements 6 and the set screws 7 is attached to this in the upper region of the ink fountain 1 by means of screw connections 8 and rests on the base plate 9 of the ink fountain 1.
  • the elastic support strip 5 is pressed onto the ink fountain roller 4 by means of corresponding springs 12 via the support webs 11.
  • the metering elements 6, which are designed as flat pieces, are fitted between the support webs 11.
  • the entire ink metering device 2 is covered by an elastic film 14. On one side of this film 14 holes 15 are punched at certain intervals over the entire length. Furthermore, small pins 16 are provided at a corresponding point in the upper region of the support webs, into which the elastic film 14 is then hung.
  • the ink 18 is located in the wedge-shaped space between the film 14, the ink fountain roller 4 and the side walls 17 of the ink fountain.
  • Two holding screws 19 are provided on the underside of each metering element 6, which with their correspondingly dimensioned shaft 20 in underneath the screw head If longitudinal grooves 21 of the elastic support bar 5 engage, it is achieved that the metering elements 6 are connected to the elastic support bar 5, but a limited displacement of the metering elements 6 in the longitudinal direction is possible.
  • set screws 7 are provided according to FIGS. 1 and 3. In the upper region of the elastic support bar 5, threads 22 are provided at regular intervals to accommodate said set screws 7.
  • a ring 23 is attached to the shaft of each set screw 7, which engages in a recess 24 on the underside of each metering element 6 and when the set screw 7 is actuated, the Longitudinal displacement of the metering element 6 causes.
  • This longitudinal displacement changes the gap between ink fountain roller 4 and metering edge 10, which results in a zone-wide change in the ink layer thickness.
  • the metering edge 10 can be designed in such a way that no dynamic pressure can build up at this point.
  • the ink metering device 26 can be placed on the ink fountain 1 as a compact structural unit and, as in the embodiment according to FIGS. 1 to 3, fastened thereon. This also happens here again in the upper region of the ink fountain 1, while in the lower region a contact with the ink fountain roller 4 takes place by means of corresponding springs 12. In the area of this resilient system, where the dosing of the ink 18 to be transported by the ink fountain roller 4 is carried out, in the elastic region 13 of the support bar 27 electromagnets 28 are fastened to the latter.
  • the electromagnets 28, the connections of which are not shown, are assigned together with springs 29 to the metering elements 30 as actuating means in order to continuously position the metering elements 30 in pulsed fashion against the ink fountain roller 4 and to lift a certain gap, the pulse frequency and stroke time being adjustable.
  • This gap corresponds to the distance 31 between the metering element 30 and the electromagnet 28. Because of the resilient contact of the elastic support strip 27 with the electromagnets 28 attached to it on the ink fountain roller 4 and the simultaneously resilient contact of the metering elements 30, this distance 31 is constant at all times even under different operating conditions and reproducible.
  • the screw connection between the metering element 30 and the support bar 27 is carried out by interposed spacers 32 so that each metering element 30 is given the necessary freedom in the vertical direction to be able to carry out the adjusting movements.
  • the metering edge 33 is again designed so that no back pressure can build up.
  • an elastic film 34 which is attached to the metering elements 30 in the upper region.

Landscapes

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

Claims (4)

1. Dispositif de dosage de l'encre dans un encrier pour des machines à imprimer offset ou typographiques, comportant des zones de dosage et de soutien disposées l'une à côté de l'autre dans la direction axiale du cylindre de l'encrier, les zones de dosage étant constituées par des éléments de dosage réglables à des épaisseurs de film d'encre différent par zones et montés élastiquement de manière que les zones de soutien s'appliquent ainsi, sous l'effet d'une pression élastique, constamment directement ou indirectement, sur le cylindre de l'encrier, des moyens de réglage étant prévus pour le déplacement des éléments de dosage, caractérisé en ce que, comme support élastique, il est prévu une seule barre d'appui (5, 27) à flexibilité élastique, s'étendant sur toute la longueur du cylindre de l'encrier (4) et qui est pourvue de zones d'appui se présentant sous la forme de réglettes d'appui (11) rigides, faisant saillie de la barre d'appui et entre lesquelles sont reçus les éléments de dosage (6, 30) déplaçables par les moyens de réglage (7, 28, 29) par rapport à la barre d'appui (5, 27).
2. Dispositif de dosage de l'encre selon la revendication 1, caractérisé en ce que la barre d'appui (5, 27) et les éléments de dosage (6, 30) sont recouverts d'une feuille élastique (14, 34).
3. Dispositif de dosage de l'encre selon l'une des revendications 1 et 2, caractérisé en ce que les éléments de dosage (6) sont agencés sous forme de pièces plates et sont déplaçables tangentiellement par rapport au cylindre de l'encreir (4), la liaison entre les éléments de dosage (6) et la barre d'appui (5) étant assurée par l'intermédiaire de vis de retenue (19), qui permettent seulement un mouvement relatif des éléments de dosage (6) dans la direction longitudinale, en ce que les vis de réglage (7) s'accrochent respectivement dans des filetages (22) qui sont aménagés dans la zone supérieure de la barre élastique d'appui (5) et en ce que la feuille élastique (14) utilisée pour la protection du dispositif de dosage de l'encre (2) est suspendue à de petites broches (16) qui sont placées dans la zone supérieure des réglettes d'appui (11).
4. Dispositif de dosage de l'encre selon l'une des revendications 1 et 2, caractérisé en ce que les éléments de dosage (30) sont montés sur la barre d'appui (27) de façon à ne pas pouvoir se déplacer tangentiellement par rapport au cylindre de l'encrier (4) mais perpendiculairement par rapport à celui-ci, en ce qu'aux éléments de dosage (30), qui peuvent être appliqués par des ressorts (29), disposés entre eux et la barre élastique d'appui (27), contre le cylindre de l'encrier (4), sont affectés des électro-aimants (28) montés sur la barre d'appui (27) et servant de moyens de réglage, qui soulèvent les éléments de dosage (30), pendant la prise d'encre, progressivement par impulsions pour les écarter d'une largeur d'intervalle déterminé (31) du cylindre de l'encrier (4) ou qui les réappliquent contre ce cylindre, la fréquence des impulsions et le temps de levage étant réglables, et en ce que la feuille élastique (34) utilisée pour la protection du dispositif de dosage de l'encre (2) est fixée, dans une zone supérieure des éléments de dosage (30), sur ceux-ci.
EP81100604A 1980-05-16 1981-01-28 Dispositif de dosage de l'encre dans un encrier pour machines à imprimer offset ou presses typographiques Expired EP0040287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3018784A DE3018784C2 (de) 1980-05-16 1980-05-16 Farbdosiereinrichtung in einem Farbkasten für Offset- oder Hochdruckmaschinen
DE3018784 1980-05-16

Publications (2)

Publication Number Publication Date
EP0040287A1 EP0040287A1 (fr) 1981-11-25
EP0040287B1 true EP0040287B1 (fr) 1983-09-21

Family

ID=6102614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100604A Expired EP0040287B1 (fr) 1980-05-16 1981-01-28 Dispositif de dosage de l'encre dans un encrier pour machines à imprimer offset ou presses typographiques

Country Status (5)

Country Link
US (1) US4453467A (fr)
EP (1) EP0040287B1 (fr)
JP (1) JPS578159A (fr)
DE (1) DE3018784C2 (fr)
IT (1) IT1135799B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308066C1 (de) * 1983-03-08 1984-09-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung fuer eine Farbkastenwalze
DE3311113C1 (de) * 1983-03-26 1988-05-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Dosierelemente in Farbkaesten von Offsetdruckmaschinen
DE3324952C1 (de) * 1983-07-11 1985-02-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiereinrichtung fuer eine Druckmaschine
DE3538256A1 (de) * 1985-10-28 1987-04-30 Heidelberger Druckmasch Ag Farbkasten fuer offset- oder hochdruckmaschinen
DE3934986A1 (de) * 1989-10-20 1991-04-25 Jagenberg Ag Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn
DE9004747U1 (de) * 1990-04-26 1990-06-28 MAN Roland Druckmaschinen AG, 6050 Offenbach Farbmesseranordnung
AU4171497A (en) 1996-09-30 1998-04-24 Accel Graphics Systems, Inc. Method and apparatus for maintaining ink level in ink fountain of printing press
JP4818645B2 (ja) * 2005-05-31 2011-11-16 日本ケーブル株式会社 索道用搬器の風監視装置
CN107856407B (zh) * 2017-11-06 2019-05-14 新华生印刷(深圳)有限公司 一种油墨移印机用智能墨盒仓

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648098B2 (de) * 1976-10-23 1979-04-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbkasten für Offset- oder Hochdruckmaschinen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1887738U (de) * 1964-02-20 Maschinenfabrik Augsburg-Nürnberg A.G., Augsburg Rillenfarbwerk für Druckmaschinen
US2062154A (en) * 1935-09-14 1936-11-24 Mcbee Co Carbon flow adjusting attachment for rotary web printing presses
US2161943A (en) * 1938-01-17 1939-06-13 Carl D Baue Ink fountain
CH392566A (de) * 1961-05-03 1965-05-31 Maschf Augsburg Nuernberg Ag Rillenfarbwerk für Druckmaschinen
DE2228625B2 (de) * 1972-06-13 1974-07-11 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Farbkasten für Druckmaschinen
DD120833A1 (fr) * 1975-05-15 1976-07-05
DE2530109C3 (de) * 1975-07-05 1978-05-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbwerk für Druckmaschinen
US4000695A (en) * 1975-10-16 1977-01-04 Frank Perretta Ink fountain blade assembly
DE2711553A1 (de) * 1977-03-17 1978-09-21 Heidelberger Druckmasch Ag Farbkasten fuer offset- oder hochdruckmaschinen
US4123972A (en) * 1977-05-12 1978-11-07 Baldwin-Gegenheimer Corporation Positioning mechanism for locating the edge of an ink metering means
DE2951653C2 (de) * 1979-12-21 1983-04-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Dosieren von Farbe auf der Farbkastenwalze eines Farbwerks für Druckmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648098B2 (de) * 1976-10-23 1979-04-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Farbkasten für Offset- oder Hochdruckmaschinen

Also Published As

Publication number Publication date
DE3018784C2 (de) 1982-12-16
EP0040287A1 (fr) 1981-11-25
JPH0242667B2 (fr) 1990-09-25
IT8121715A0 (it) 1981-05-15
US4453467A (en) 1984-06-12
IT1135799B (it) 1986-08-27
DE3018784A1 (de) 1981-11-26
JPS578159A (en) 1982-01-16

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