EP0041117B1 - Lame d'encrier pour un rouleau à bac encreur d'une presse à imprimer - Google Patents

Lame d'encrier pour un rouleau à bac encreur d'une presse à imprimer Download PDF

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Publication number
EP0041117B1
EP0041117B1 EP81102671A EP81102671A EP0041117B1 EP 0041117 B1 EP0041117 B1 EP 0041117B1 EP 81102671 A EP81102671 A EP 81102671A EP 81102671 A EP81102671 A EP 81102671A EP 0041117 B1 EP0041117 B1 EP 0041117B1
Authority
EP
European Patent Office
Prior art keywords
ink
recesses
knife
ink knife
groove
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
EP81102671A
Other languages
German (de)
English (en)
Other versions
EP0041117A1 (fr
Inventor
Ingo Köbler
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
Publication of EP0041117A1 publication Critical patent/EP0041117A1/fr
Application granted granted Critical
Publication of EP0041117B1 publication Critical patent/EP0041117B1/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 knife for an ink fountain roller of printing presses, with a clamping area which can be clamped in a holder and a freely projecting working area which is subdivided into individually adjustable but coherent partial areas by groove-like cutouts arranged on the back of the ink knife and from its front edge each of which can be adjusted individually to the ink fountain roller for setting an ink layer thickness in an ink zone by means of an actuator.
  • Color meters with these features are known from DE-A-25 45 737 and US-A-2 283 830.
  • a groove-like recess is arranged on both sides of a partial area of the color knife, which recesses also run parallel to one another in their direction of extension.
  • the groove-like recesses have a semicircular cross section, in the case of US-A a rectangular or alternatively a triangular cross section, the latter embodiment narrowing in a wedge shape starting from the front edge of the color knife according to US-A.
  • This object is achieved in that two groove-like recesses are provided between each two adjacent sections of the color knife, which, starting from the front edge of the color knife to the clamping area of the same, converge in a V-shape.
  • This structurally given deformability of the ink knife 3 ensures a precisely defined amount of ink in each ink zone without influencing adjacent ink zones, so that excellent printing results can be achieved.
  • 1, 1 denotes an ink fountain
  • 2 denotes an ink fountain roller
  • 3 denotes an ink knife.
  • the latter has a clamping area 4, with which it is clamped in a multi-part holder 5 fastened to the ink fountain 1, and a freely projecting working area 6.
  • the working area is formed by groove-like cutouts 9 arranged on the back 7 of the ink knife 3 and from its front edge 8 divided into individually adjustable but coherent sections 10;
  • Each of these subareas can be adjusted individually to the ink fountain roller 2 in order to set an ink layer thickness in an ink zone 11 by means of an actuator 12 - in the exemplary embodiment shown an adjusting screw which is rotatably mounted in the holder 5.
  • two groove-like recesses 9 are provided between each two adjacent subregions 10 of the color knife 3, which run from the front edge 8 of the color knife toward its clamping area towards one another in a V-shape - see also FIG. 2.
  • the straight or possibly also arc-shaped groove-like recesses have a rectangular cross-section and are molded into the color knife 3 such that between its underside 13 and the groove base there is a bending area 14 - see FIGS. 3 and 4 - with a rectangular cross-section and between the mutually facing ones Side faces of the recesses 9 each have a wedge-shaped knife part 15.
  • the two recesses 9, each tapering in a V-shape are arranged at an acute angle to one another, preferably merge into one another directly in front of the clamping region 4 and have a depth of approximately half the ink knife thickness.
  • the width of a color zone 11 is determined by the distance between two center lines which run through the center of two adjacent pairs of recesses 9 which converge in a V-shape.
  • the width of each of the ink zones 11 is retained exactly due to the ink knife design according to the invention both in the ink application of a partial area 10 and in the doctor blade position thereof.
  • one of the ink zones 11 is considered in more detail with reference to FIGS. 3 and 4, in which the conditions on the ink knife 3 are shown enlarged in relation to its position relative to the ink fountain roller 2.
  • Fig. 3 the considered color zone 11/1 between the arrows is complete, the color zone 11/2 or 11/3 adjacent to the left and right of the same, however, is only partially shown.
  • the underside 13 of the color knife 3 is, as from FIG. 3 can be seen, across the entire width shown equidistant from the ink fountain roller 2, so that in all three ink zones 11/1, 11/2 and 11/3 shown by the ink fountain roller 2 color with a constant layer thickness is passed on to a subsequent roller.
  • FIG. 3 the arrangement of the parts according to FIG.
  • ink is transported essentially only in the ink zones 11/2 and 11/3, since in the ink zone 11/1 the assigned sub-area 10/1 of the ink knife 3 is completely set against the ink fountain roller 2 and the paint is scraped off in this area.
  • the adjustment of the partial area 10/1 to the ink fountain roller 2 takes place by corresponding adjustment of the adjusting screw 12 which, as shown in FIG. 2, engages at about point 16, i.e. near the leading edge 8 of the ink knife and in the middle on the partial area 10/1 under consideration and this presses in the direction of the ink fountain roller 2.
  • Said portion 10/1 does not bend, or only insignificantly, because of the geometry of the recesses 9/1, 9/2 and the knife parts 15 adjoining it; the latter because the two recesses 9/1 and 9/2 adjoining the partial area 10/1, with their bending areas 14 weakened on the cross-section side, give a hinge effect, which - as can be seen from FIG. 4 - occurs when the partial area 10/1 is turned on Bend the bending areas 14 to the ink fountain roller 2, to a certain extent as hinge pivot points, but the knife parts 15 largely retain their straight shape and behave in the region of the front edge 8 of the ink knife 3 approximately as rigid supports clamped on two sides.

Landscapes

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

Claims (5)

1. Lame d'encrage (3) pour un cylindre (2) de bac d'encrage de machines d'impression, comportant une zone de blocage (4) pouvant être serrée dans un support (5) et une zone de travail (6) disposée librement en porte-à-faux, qui est décomposée par des évidements (9) en forme de rainures, ménagés sur le dos de la lame d'encrage et partant de son bord avant (8), en plusieurs zones partielles (10) réglables individuellement mais cependant liées entre elles et qui peuvent chacune, en vue du réglage d'une épaisseur de couche d'encre dans une zone d'encre (11), être appliquées individuellement contre le rouleau (2) de bac encreur au moyen d'un organe de manoeuvre (12), caractérisée en ce qu'il est prévu entre respectivement deux zones partielles adjacentes (10) à chaque fois deux évidements (9) en forme de rainures qui se rapprochent l'un de l'autre en forme de V depuis le bord avant (8) de la lame d'encrage (3) jusqu'à sa zone de blocage (4).
2. Lame d'encrage selon la revendication 1, caractérisée en ce que les évidements en forme de rainures (9) se rapprochent l'un de l'autre avec un profil rectiligne ou incurvé, possèdent en outre une section droite rectangulaire et sont formés de telle sorte dans la lame d'encrage (3) de manière qu'il subsiste entre le fond de rainure des évidements et le côté inférieur (13) de la lame d'encrage une zone de flexion (4) de section droite rectangulaire ainsi qu'entre les surfaces latérales, tournées l'une vers l'autre, des évidements (9) respectivement une partie de lame (15) en forme de coin.
3. Lame d'encrage selon l'une des revendications précédentes, caractérisée en ce que les évidements (9) en forme de rainures ont une profondeur correspondant à peu près à la moitié de l'épaisseur de la lame d'encrage.
4. Lame d'encrage selon l'une des revendications précédentes, caractérisée en ce que les deux évidements (9), se rapprochant mutuellement l'un de l'autre en forme de V, se rejoignent immédiatement avant la zone de blocage (4).
5. Lame d'encrage selon une ou plusieurs des revendications précédentes, caractérisée en ce que les deux évidements (9), se rapprochant mutuellement l'un de l'autre en forme de V, sont disposés avec un angle aigu entre eux.
EP81102671A 1980-05-29 1981-04-09 Lame d'encrier pour un rouleau à bac encreur d'une presse à imprimer Expired EP0041117B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3020306A DE3020306C2 (de) 1980-05-29 1980-05-29 Farbmesser für eine Farbkastenwalze von Druckmaschinen
DE3020306 1980-05-29

Publications (2)

Publication Number Publication Date
EP0041117A1 EP0041117A1 (fr) 1981-12-09
EP0041117B1 true EP0041117B1 (fr) 1984-07-25

Family

ID=6103447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102671A Expired EP0041117B1 (fr) 1980-05-29 1981-04-09 Lame d'encrier pour un rouleau à bac encreur d'une presse à imprimer

Country Status (4)

Country Link
US (1) US4373445A (fr)
EP (1) EP0041117B1 (fr)
JP (1) JPS5720357A (fr)
DE (2) DE3020306C2 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE442969B (sv) * 1981-12-14 1986-02-10 Wifag Maschf Doseringskniv
DE3239259C2 (de) * 1982-10-23 1985-04-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zum zonenweisen Dosieren von Farbe auf der Farbkastenwalze eines Farbwerkes für Druckmaschinen
DE3308066C1 (de) * 1983-03-08 1984-09-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung fuer eine Farbkastenwalze
US4638733A (en) * 1984-01-20 1987-01-27 Horst Rebhan Squeegee head for printing of bodies by the screen printing method
FI85895C (fi) * 1988-11-18 1992-06-10 Valmet Paper Machinery Inc Foerfarande foer kompensation av boejningen hos en schaber och boejningskompenserad schaber.
DE3933844A1 (de) * 1989-10-10 1991-04-18 Windmoeller & Hoelscher Rakelvorrichtung
US5237375A (en) * 1992-05-13 1993-08-17 Steven Bruce Michlin Wiper and spreader blade stiffener
US5713276A (en) * 1995-09-22 1998-02-03 Motorola, Inc. Flexible self-level squeegee blade
FR2746704B1 (fr) * 1996-03-29 1998-05-22 Fimor Tete de raclage, notamment pour serigraphie
US6546861B2 (en) 2001-07-30 2003-04-15 Goss Graphic Systems, Inc. Printing press scraping blade
US20030226579A1 (en) * 2002-06-06 2003-12-11 Carrier Gordon Eugene Serrated doctor blades
US7311804B2 (en) * 2004-03-31 2007-12-25 Metso Paper, Inc. Universal doctor blade with indicia
GB0919580D0 (en) * 2009-11-09 2009-12-23 Dtg Int Gmbh Screen printing
US8474378B1 (en) 2010-02-23 2013-07-02 Valley Holdings, Llc Chamber blade/sealing assembly for a printing press

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283830A (en) * 1941-01-22 1942-05-19 Goss Printing Press Co Ltd Inking mechanism
DE2545737A1 (de) * 1975-10-11 1977-04-14 Frankenthal Ag Albert Farbmesser fuer die farbkastenwalze
JPS5629148Y2 (fr) * 1978-11-29 1981-07-10

Also Published As

Publication number Publication date
JPS5720357A (en) 1982-02-02
JPH03231B2 (fr) 1991-01-07
DE3020306A1 (de) 1981-12-03
US4373445A (en) 1983-02-15
DE3020306C2 (de) 1982-11-11
EP0041117A1 (fr) 1981-12-09
DE3164992D1 (en) 1984-08-30

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