EP0600435B1 - Segment de lame d'encrier et support de lame d'encrier pour un encrier de machine d'impression rotative - Google Patents

Segment de lame d'encrier et support de lame d'encrier pour un encrier de machine d'impression rotative Download PDF

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Publication number
EP0600435B1
EP0600435B1 EP93119269A EP93119269A EP0600435B1 EP 0600435 B1 EP0600435 B1 EP 0600435B1 EP 93119269 A EP93119269 A EP 93119269A EP 93119269 A EP93119269 A EP 93119269A EP 0600435 B1 EP0600435 B1 EP 0600435B1
Authority
EP
European Patent Office
Prior art keywords
ink
knife
ductor knife
ductor
color
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
EP93119269A
Other languages
German (de)
English (en)
Other versions
EP0600435A1 (fr
Inventor
Christian Fischer
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0600435A1 publication Critical patent/EP0600435A1/fr
Application granted granted Critical
Publication of EP0600435B1 publication Critical patent/EP0600435B1/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
    • 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 blade holder and ink knife blades for a rotary printing press according to the preamble of claim 1.
  • DE 90 04 747 U1 discloses a generic ink knife-blade arrangement for an ink fountain of a web-fed rotary printing press with resilient juxtaposed and spaced apart from a roller immersed in the ink fountain by means of an adjusting device individually adjustable folding blade blades.
  • the folding blade slats are slidably mounted towards the roller.
  • An elongated hole or a longitudinal slot is provided in the middle of the folding blade slats for the passage of fastening screws. In this way, the folding blade lamellas can be pushed in when worn.
  • a disadvantage of this color knife-lamella arrangement is that when a certain degree of wear of the color knife-lamellae is reached, each individual color-knife lamella must be individually adjusted.
  • the adjustment and alignment of the individual ink knife slats is very labor intensive and can also lead to inaccuracies in the adjustment of the ink knife slats to the roller.
  • the invention has for its object to increase the useful life of ink knife slats for an ink knife, which is clamped on the ink duct of a rotary printing press in an ink knife carrier, and to provide an associated ink knife carrier.
  • the color knife has a long service life because four working edges can be used per color knife slat.
  • labor-intensive alignment when changing the ink knife blades is not necessary since one end of the ink knife blades rests against a defined edge of the ink knife blade holder.
  • the color knife blades are easily exchangeable in the color knife blade holder and can be clamped resiliently due to the arrangement of an additional gap.
  • FIG. 1 parts of an inking unit of a rotary printing press for web offset printing are shown.
  • An ink fountain roller 2 and a film roller 3 are mounted in a machine frame 1.
  • a paint application device designated by 4 can be placed on the ink fountain roller 2.
  • the ink application device 4 consists of an ink fountain 6 and an associated adjusting device 7 for known ink knives 8.
  • the ink fountains 6 can be used in connection with the adjusting device 7 in full, half or quarter-wide design according to the printing requirements.
  • the ink application device 4 is provided at its base 9 with trunnions 11, which are mounted in bearings 12 fixed to the frame on a cross member 13 running between the side parts of the machine frame 1.
  • the ink application device 4 is pivoted about the bearing pins 11 into a rest position, not shown, which is remote from the ink duct.
  • the adjusting device 7 is arranged under the ink fountain 6, each of which has two side parts 16, which have approximately the shape of triangles standing on the top and are adapted to the diameter of the ink duct 2 on their duct side.
  • a bottom surface 17 of the ink fountain 6 which runs obliquely downwards in the direction of the ink fountain roller 2 is formed both by the top 18 of the housing of the adjusting device 7 and by an ink knife holder 19 with the ink blades 8.
  • the adjusting device 7 has eccentrics 21 which are connected via transmission elements 22, for. B. screws, with adjusting levers 23 for color knife 8 in connection.
  • the adjusting lever 23 are mounted on an axle 24 fixed to the housing.
  • the ink knife carrier 19 is attached to the top of the adjusting device 7 by means of cylinder screws 26.
  • the color knife carrier 19 consists of a Insert bar 27 and from a terminal block 28, both of which are connected by cylinder screws 29 and have an approximately rectangular cross section in the connected state.
  • the ink knife carrier 19 runs axially parallel to the ink duct 2.
  • the length of the ink knife carrier 19 corresponds to the respective ink fountain width.
  • the cheese head screws 29 are guided in bores 31 of the terminal block 28.
  • the screw head of the cap screw 29 is located in a countersink 32 of the bore 31.
  • the threaded part of the cap screw 29 is in a frictional connection with a threaded bore 33 of the insert strip 27.
  • the ink knife 8 can consist of separate sections or ink knife blades 36, 37, 38, 39, which are arranged closely next to each other, with their over their entire length l, which extends in the axis-parallel direction to the ink duct 2 and corresponds to the width of an ink fountain 6 have the first end 41 in the direction of the ink duct 2 and are received by the ink knife carrier 19 with their second end 42.
  • the inclusion of the second ends 42 of the ink knife slats 36 to 39 consisting of the ink knife 8 in the ink knife holder 19 is achieved in that a first end 43 of the ink knife holder 19 seen in cross section according to FIG.
  • the gap 46 has a first longitudinal gap 46, which is Extends over the entire length l of the ink knife carrier 19, ie corresponds to the width of the ink fountain 6.
  • the gap 46 extends, viewed in cross section according to FIG. 4, from the first end 43 of the ink knife carrier 19 to one Bore 47, which penetrates the insert bar 27 and the terminal block 28 together.
  • the gap 46 is then reduced in its width b according to FIG. 4 to a width c as a result of a shoulder 45.
  • the edge at the foot of paragraph 45 is provided with an undercut.
  • the width b of the gap 46 is slightly less than a thickness d of the color knife 8 or the color knife blade 36 shown in FIG. 3, so that a clamping effect on the clamped color knife 8 is achieved.
  • This clamping effect is further increased by the arrangement of the second gap 48 of smaller width c adjoining the gap 46 in the direction of the second end 44 of the ink knife carrier 19 compared to the width b of the gap 46.
  • the second gap 48 ends before the second end 44 of the ink knife carrier 19, so that the insert strip 27 rests against the terminal strip 28 with a surface 49 located at its second end 44.
  • the bores 47 are provided for fastening the ink knife carrier 19 on the upper side 18 of the adjusting device 7 by means of cylinder screws 26.
  • the bore 47 has counterbores 32 on both sides for alternatively receiving the heads of the cylinder screws 26.
  • the color knife slats 36 to 39 each have two working edges 51, 52 at their first ends 41 and also two working edges 53, 54 at their second ends 42.
  • a working edge 52 of the ink knife blades 36 to 39 on the circumference of the ink ductor 2 has applied and signs of wear have occurred on the working edge 52 as a result of the operating time, the ink knife carrier 19 is turned with the ink knife 8 over its longitudinal axis by 180 °, so that the working edge 51 now lies against the ink duct 2.
  • the cheese head screws 26 are loosened. It is important to ensure that the original length of the ink knife blades 36 to 39 is retained. That can e.g. B.
  • the working edge 51 After the working edge 51 is also worn, after loosening the cheese head screws 26 and 29, the ink knife blades 36 to 39 are turned through 180 ° about their longitudinal axes, so that the worn working edges 51, 52 are clamped in the ink knife holder 19 and now one of the two Working edges 53, 54 is available.
  • the working edge 53 After wear of the third working edge, e.g. B. the working edge 53 is rotated after loosening the cheese head screws 26 of the ink knife carrier 19 with the ink knife 8 180 ° about its longitudinal axis, so that the fourth working edge 54 is used on the ink duct 2.
  • the color knife blades 36 to 39 can be made of spring steel.
  • the ink knife lamellae 36 to 39 are so close together that a gap of 2 to 3 ⁇ m is created, so that the printing ink cannot penetrate through this gap.
  • the color knife slats 36 to 39 can also be made of plastic.
  • the ink knife 8 can be used both as an overshot ink knife and as an undershot ink knife in rotary printing presses, in an inking unit containing an ink fountain.
  • the working edges 51 to 54 of the ink knife blades 36 to 39 are ground in or lapped in at the ink duct 2, i. H. with a slight chamfer.
  • the ends 41, 42 of the ink knife blades 36 to 39 from a wear-resistant material, e.g. B. made of hard metal, cutting ceramic or high-speed steel.
  • the ink knife blades 36 to 39 are then cohesively connected to the wear-resistant ends mentioned by brazing or gluing.
  • Wear zones on the working edges 51, 52 or 53, 54 are designated 56, 57.
  • the end of the wear zone 56, 57 is reached when a connecting line 58 between the wear-resistant material and the ink knife blades 36 to 39 becomes visible. This happens when the dashed lines 59, 61 of the wear zone 56, 57 with cross the connecting line 58.
  • This wear indicator is visible when the ink application device 4 is pivoted around the bearing pin 11.

Landscapes

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

Claims (5)

  1. Support de segment de lame d'encrier comprenant plusieurs segments de lame d'encrier en forme de feuilles à deux extrémités en vue d'une utilisation dans un encrier, caractérisé en ce que le support de segment de lame d'encrier (27, 28) associé au segment serrable (36 à 39) comportant deux arêtes de travail (51, 52 ; 53, 54) à chaque extrémité (41, 42) est monté avec une possibilité de pivotement de 180°.
  2. Support de segment de lame d'encrier selon la revendication 1, caractérisé en ce que les extrémités (41, 42) du segment (36 à 39) sont réalisées dans un matériau résistant à l'usure.
  3. Support de segment de lame d'encrier selon la revendication 2, caractérisé en ce que le matériau résistant à l'usure prévu pour les extrémités (41, 42) du segment (36 à 39) est du métal dur, de la céramique de coupe ou de l'acier rapide.
  4. Support de segment de lame d'encrier selon l'une des revendications précédentes, pouvant être employé pour une lame d'encrier (8) à encrage supérieur ou inférieur.
  5. Support de segment de lame d'encrier selon l'une des revendications précédentes, caractérisé par un indicateur d'usure (56 à 59, 61) situé aux extrémités (41, 42) du segment (36 à 39).
EP93119269A 1992-12-03 1993-11-30 Segment de lame d'encrier et support de lame d'encrier pour un encrier de machine d'impression rotative Expired - Lifetime EP0600435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240642A DE4240642C2 (de) 1992-12-03 1992-12-03 Farbmesserlamellenhalter und Farbmesser-Lamellen für einen Farbkasten einer Rotationsdruckmaschine
DE4240642 1992-12-03

Publications (2)

Publication Number Publication Date
EP0600435A1 EP0600435A1 (fr) 1994-06-08
EP0600435B1 true EP0600435B1 (fr) 1997-04-23

Family

ID=6474279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119269A Expired - Lifetime EP0600435B1 (fr) 1992-12-03 1993-11-30 Segment de lame d'encrier et support de lame d'encrier pour un encrier de machine d'impression rotative

Country Status (2)

Country Link
EP (1) EP0600435B1 (fr)
DE (2) DE4240642C2 (fr)

Families Citing this family (6)

* 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
DE29704025U1 (de) * 1997-03-06 1997-05-07 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Klinge für eine Auftragseinrichtung oder eine Rakelvorrichtung
US6405649B1 (en) 1999-02-23 2002-06-18 De La Rue Giori S.A. Ink fountain blade for a printing machine
EP1588854A1 (fr) * 2004-04-22 2005-10-26 Kba-Giori S.A. Encrier pour machine d'impression
DE102010001474A1 (de) 2010-02-02 2011-08-04 KOENIG & BAUER Aktiengesellschaft, 97080 Verfahren zur Herstellung eines Farbmessers eines Farbkastens einer Rotationsdruckmaschine
DE102013225691B4 (de) 2013-12-12 2017-11-16 Koenig & Bauer Ag System zum Zuführen und Dosieren von Druckfarbe in ein Farbwerk einer Druckmaschine sowie Verfahren zum Erneuern einer zur Farbdosierung wirksamen Dosierkante

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE634611C (de) * 1935-05-30 1936-08-31 Maschf Augsburg Nuernberg Ag Rakel fuer Rotationstiefdruckmaschinen
US2519182A (en) * 1945-10-09 1950-08-15 Hoe & Co R Ink fountain
US3559573A (en) * 1968-08-12 1971-02-02 Hantscho Co George Ink fountain assembly and blade adjusting means therefor
US3780670A (en) * 1972-08-07 1973-12-25 Faustel Inc Doctor blade assembly
DE2929933A1 (de) * 1979-07-24 1981-02-19 Roland Man Druckmasch Farbdosiervorrichtung fuer eine druckmaschine
DE3302317A1 (de) * 1982-01-29 1983-08-11 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosierelement, insbesondere farbmesser oder farbschieber, fuer das farbwerk einer rotationsdruckmaschine
US4441418A (en) * 1982-02-03 1984-04-10 Adolph Coors Company Overvarnish apparatus for decorator machine
DE8903428U1 (de) * 1988-09-07 1989-05-11 MAN Roland Druckmaschinen AG, 6050 Offenbach Farbmesser
DE3834932A1 (de) * 1988-10-13 1990-04-19 Herbert Ott Rakelhalterung sowie hierfuer geeignete rakel
DE9004747U1 (de) * 1990-04-26 1990-06-28 MAN Roland Druckmaschinen AG, 6050 Offenbach Farbmesseranordnung

Also Published As

Publication number Publication date
DE4240642C2 (de) 1996-03-21
DE4240642A1 (de) 1994-06-09
DE59306261D1 (de) 1997-05-28
EP0600435A1 (fr) 1994-06-08

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