EP0376885B1 - Lame de l'encrier pour doser par zones le film d'encre - Google Patents

Lame de l'encrier pour doser par zones le film d'encre Download PDF

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Publication number
EP0376885B1
EP0376885B1 EP89810949A EP89810949A EP0376885B1 EP 0376885 B1 EP0376885 B1 EP 0376885B1 EP 89810949 A EP89810949 A EP 89810949A EP 89810949 A EP89810949 A EP 89810949A EP 0376885 B1 EP0376885 B1 EP 0376885B1
Authority
EP
European Patent Office
Prior art keywords
zone
width
metering
slots
plate
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.)
Revoked
Application number
EP89810949A
Other languages
German (de)
English (en)
Other versions
EP0376885A3 (fr
EP0376885A2 (fr
Inventor
Franz Schneider
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6370412&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0376885(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP0376885A2 publication Critical patent/EP0376885A2/fr
Publication of EP0376885A3 publication Critical patent/EP0376885A3/fr
Application granted granted Critical
Publication of EP0376885B1 publication Critical patent/EP0376885B1/fr
Anticipated expiration legal-status Critical
Revoked 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 a metering meter for zone-wise metering of a color film of the type mentioned in the preamble of claim 1 and a method for its production.
  • Metering knives of this type are known in a wide variety of embodiments.
  • US-A-2 161 943 shows such a meter.
  • tongue-like individual parts are mounted next to one another on a supporting body by means of screws in such a way that a metering knife is produced.
  • the requirements for the accuracy of the individual parts during production are very high. Precision must also be of great importance during the assembly of the individual dosing elements to form a dosing knife. These accuracies are necessary in order to obtain a metering meter that meets the requirements of practical tightness against color leakage between the metering elements on the one hand and unrestricted mobility between the individual metering elements on the other hand.
  • the manufacture of such a metering knife is therefore very time-consuming and expensive.
  • a metallic coating of one of the two slit sides is carried out with a material which is softer than the material of the color knife, with a galvanic application of a copper layer being preferred here.
  • the thickness of the copper layer to be applied must be slightly larger than the width of the slot, which can be achieved in that the galvanic application is carried out with adjacent tongues spread out, whereupon the excess material is sheared off by the tongues side of the tongues not coated by mutual movement of the tongues , so that a slot is created, the width of which is practically zero.
  • the depressions that were made in the area of the slots in the second work step by material removal are filled with an elastic material. Accordingly, in the case of the metering knife known from this publication, each slot is filled by a wire EDM machine after it has been produced in such a way that the open slot width is practically zero.
  • metering knives which consist of a resilient plate into which slots are incorporated, as can be seen from DE-A 22 28 625.
  • the slots have such a large width that they have to be filled with a soft elastic sealing material in order to maintain a seal against the leakage of the paint.
  • the effort involved in producing this metering knife is also relatively large, and an influence of the adjustment movement of the one tongue on the adjacent tongue that cannot be adjusted cannot be ruled out.
  • the invention is based on the object of further developing a metering knife of the type mentioned at the outset or a method for its production in such a way that the production is simplified and nevertheless sufficient sealing against the passage of paint is ensured.
  • the object is achieved by the features contained in the characterizing part of claim 1 or in claim 3.
  • the width of the slots advantageously ranges from 0.01 mm to 0.03 mm. With such a width of the slot, the leakage for paints of higher viscosity is practically prevented and nevertheless an adjustment movement of the individual zone-wide tongues is ensured without the slightest influence on their adjacent tongues.
  • the slots In order to obtain an effective adjustment of the individual zone-wide tongues without the stress on the material or the adjustment forces to be applied being excessive, the slots have a length of approximately two thirds of the panel width, with a panel width of, for example, 8 cm.
  • the plate thickness is advantageously about one to three millimeters, so that on the one hand the slot is not opened at maximum adjustment, but on the other hand the required strength requirements are met.
  • slots 7 are made in the plate 1, which can be done, for example, by means of laser cutting.
  • the width b of the slots 7 is 0.01 mm to 0.03 mm.
  • the length l of the slots 7 is approximately 2 thirds of the width a of the plate 1. The slots 7 thus form the zone-wide tongues 3 of the metering knife.
  • Fig. 3 shows the adjustability of the zone-wide tongues 3 of the metering knife. From this it can also be seen that the maximum adjustment, as with the zone-wide tongue 3 is shown, may be at most half the thickness d of the plate 1 so that the slots 7 are never opened and the leakage is practically excluded.
  • the metering knife practically no longer needs to be processed after the slots 7 have been introduced. Only the dosing edge is slightly ground, which underlines the simple and cheap manufacture of the dosing knife 1.

Landscapes

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

Claims (3)

  1. Lame de dosage pour assurer par zones le dosage d'un film d'encre sur un rouleau du système d'encrage d'une machine d'imprimerie qui utilise une encre à haute viscosité, comportant une plaque (1) qui présente des languettes flexibles (3) ayant chacune la largeur d'une zone à desservir, ces languettes étant associées chacune à un organe de réglage et séparées l'une de l'autre par des fentes réalisées par usinage aux rayons laser, caractérisée en ce que :
    a) les fentes (7) usinées dans la plaque (1) ont une largeur(b) comprise entre 0,01 et 0,03 mm et empêchent l'encre de couler sans dispositif de recouvrement supplémentaire,
    b) la longueur (L) des fentes (7) est comprise entre environ la moitié et les 2/3 de la largeur (a) de la plaque, et
    c) l'épaisseur (d) de la plaque (1) est au moins égale au double de la course de réglage maximum des languettes (3) dont la largeur correspond à chaque zone.
  2. Lame de dosage selon la revendication 1, caractérisée en ce que la plaque (1) est constituée d'une matière élastique et présente une épaisseur (d) comprise entre 1 et 3 mm.
  3. Procédé pour fabriquer une lame de dosage destinée à assurer par zones le dosage d'un film d'encre sur un rouleau du système d'encrage d'une machine d'imprimerie qui utilise une encre à haute viscosité, cette lame comportant des languettes flexibles ayant chacune la largeur d'une zone à desservir, ces languettes étant associées chacune à un organe de réglage et séparées l'une de l'autre par des fentes (7), caractérisé en ce qu'on prend comme ébauche de la lame de dosage une plaque (1) en matière élastique, ayant une épaisseur (d) au moins égale au double de la course de réglage maximum des languettes(3) correspondant à chaque zone, en ce qu'on y réalise des fentes séparées (7) ayant une largeur (b) comprise entre 0,01 et 0,03 mm et une longueur (L) comprise environ entre la moitié et les deux tiers de la largeur (a) de la plaque, ces fentes étant réalisées par découpage au laser, et en ce que, après l'usinage des fentes (7),on rectifie seulement l'arête de dosage de la lame de dosage.
EP89810949A 1988-12-28 1989-12-12 Lame de l'encrier pour doser par zones le film d'encre Revoked EP0376885B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3844138A DE3844138A1 (de) 1988-12-28 1988-12-28 Dosiermesser zum zonenweisen dosieren eines farbfilms
DE3844138 1988-12-28

Publications (3)

Publication Number Publication Date
EP0376885A2 EP0376885A2 (fr) 1990-07-04
EP0376885A3 EP0376885A3 (fr) 1991-01-23
EP0376885B1 true EP0376885B1 (fr) 1995-03-01

Family

ID=6370412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810949A Revoked EP0376885B1 (fr) 1988-12-28 1989-12-12 Lame de l'encrier pour doser par zones le film d'encre

Country Status (2)

Country Link
EP (1) EP0376885B1 (fr)
DE (2) DE3844138A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19525529C1 (de) * 1995-07-13 1996-06-05 Koenig & Bauer Albert Ag Verfahren zur Montage einer Dosiereinrichtung in einer Rotationsdruckmaschine
WO1997014562A1 (fr) * 1995-10-19 1997-04-24 Sycolor Consulting Ag Couteau encreur pour rouleau d'encrier d'une imprimante

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161943A (en) * 1938-01-17 1939-06-13 Carl D Baue Ink fountain
US2837024A (en) * 1955-04-07 1958-06-03 John Waldron Corp Ink fountain blade
US3699888A (en) * 1971-09-13 1972-10-24 North American Rockwell Composite fountain blade construction for remote ink control system
DE2228625B2 (de) * 1972-06-13 1974-07-11 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Farbkasten für Druckmaschinen
DE3525589C1 (de) * 1985-07-18 1986-04-30 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbmesser fuer eine Farbkastenwalze einer Druckmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Dubbel, Taschenbuch für den Maschinenbau, 1983 Springer Verlag *

Also Published As

Publication number Publication date
DE3844138A1 (de) 1990-08-02
EP0376885A3 (fr) 1991-01-23
DE58909065D1 (de) 1995-04-06
EP0376885A2 (fr) 1990-07-04

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