EP0453910B1 - Kammerrakel - Google Patents

Kammerrakel Download PDF

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Publication number
EP0453910B1
EP0453910B1 EP91105899A EP91105899A EP0453910B1 EP 0453910 B1 EP0453910 B1 EP 0453910B1 EP 91105899 A EP91105899 A EP 91105899A EP 91105899 A EP91105899 A EP 91105899A EP 0453910 B1 EP0453910 B1 EP 0453910B1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
chamber
ink
inking unit
unit according
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
EP91105899A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0453910A1 (de
Inventor
Wolfgang Otto Reder
Georg 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.)
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 EP0453910A1 publication Critical patent/EP0453910A1/de
Application granted granted Critical
Publication of EP0453910B1 publication Critical patent/EP0453910B1/de
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
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/065—Using inking rails
    • 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
    • B41F31/027—Ink rail devices for inking ink rollers

Definitions

  • the invention relates to an inking unit for a web-fed rotary printing press according to the preamble of claim 1.
  • a generic inking unit is known from DE-OS 38 00 411.
  • a closing doctor blade is provided which has at least one overflow opening, by means of which an ink chamber is connected to an additional pre-chamber.
  • an overpressure prevailing in the ink chamber is reduced.
  • the overflowing paint is returned to a pump, so that a color cycle results.
  • EP-A-03 59 955 shows a chambered doctor blade with two doctor blades.
  • a web is provided within the chambered doctor blade, which starts from an upper side and extends over the entire width of the chambered doctor blade and leaves a narrow passage slot open above the underside.
  • a chambered doctor blade with two doctor blades, which has an ink chamber with an upstream distributor chamber, is known from DE-A-37 04 433.
  • EP-A-03 50 839 shows a chambered doctor blade with additional doctor blades between the working and closing doctor blades.
  • GB-PS 15 90 928 shows a chambered doctor blade with two thin elastic doctor blades, which automatically seal the doctor chamber as soon as the doctor blades come out of contact with a surface to be inked.
  • the invention has for its object to provide a chamber doctor blade on an anilox roller of an inking unit, which compensates for pressure fluctuations in the ink chamber.
  • the cells of an anilox roller are advantageously made by the subject matter of the invention evenly filled with paint. Pressure fluctuations in the ink chamber have been reduced and unwanted air bubbles which impair good filling of the cells with paint are minimized.
  • an overflow opening is provided, which is caused by the respective overpressure, e.g. B. by a change in viscosity of the color or speed change of the anilox roller, in the ink chamber automatically adjusts and degrades this proportionally.
  • This also ensures that the pressure reduction takes place evenly over the entire length of the ink chamber, so that, for. B. an uneven ink application in the form of visible longitudinal stripes on the printed product is avoided.
  • an ink supply to the ink chamber is provided in the form of an ink supply slot which extends continuously over the entire width of the ink chamber.
  • the chambered doctor blade housing is advantageously divided in two in the longitudinal direction, as a result of which the feed slot is produced in a structurally simple manner.
  • the figure shows a schematic representation of the chambered doctor blade according to the invention in section.
  • the inking unit of a rotary printing press has a chambered doctor blade arrangement 3, which is positioned from below on an anilox roller 2.
  • the chambered doctor blade arrangement 3 consists of a doctor blade holder 4, 6 divided in the axial direction and two doctor blades 7, 8 arranged offset in the circumferential direction of the anilox roller 2 the anilox roller 2 is immersed.
  • a plurality of chamber doctor blade arrangements 3 arranged next to one another can be provided over the length of the anilox roller 2. The use of a plurality of chamber doctor blade arrangements 3 arranged next to one another simplifies handling and enables the ink supply of the anilox roller 2 to be shut down zone by zone.
  • the doctor blade 7, also referred to below as the working doctor, and the doctor blade 8, also referred to below as the closing doctor, are each made at an angle ⁇ , ⁇ ( ⁇ ; ⁇ > 90 O ) under slight pressure on the anilox roller 2.
  • the doctor blades 7, 8 are fraught with play in an axially extending groove 11; 12 arranged in the doctor holder 4, 6.
  • the doctor blades 7, 8 characterized by this ratio of free bending length L to thickness D (L / D /400) are therefore extremely flexible.
  • a pressure increase in the ink chamber 9 is, for. B. caused by a change in the viscosity of the ink or by an increase in the speed of the anilox roller 2 or by the formation of air bubbles in the ink chamber 9.
  • these pressure fluctuations cause filling disorders of the cups 23 of the anilox roller 2 and thus lead to a loss in quality in the color distribution.
  • This pressure increase in the ink chamber 9 leads to the fact that it is pressed more strongly onto the anilox roller 2 in proportion to the pressure increase. This reaction ensures that only ink is removed from the ink chamber 9, which is located in the cups 23 of the anilox roller 2. If the pressure in the ink chamber 9 is reduced, the contact force of the working squeegee 7 on the anilox roller 2 decreases again and thus protects the squeegee sheet 7 and the webs 24 of the anilox roller 2, thereby increasing their service life.
  • the closing squeegee 8 is bent by the anilox roller 2 when the pressure in the ink chamber 9 increases, so that a small gap s (z. B. 0 ⁇ s ⁇ 0.5 mm) between the doctor blade edge and the anilox roller 2 is formed.
  • This measure ensures that more or at least as much ink can flow out of the ink chamber 9 through the gap s as is supplied to the ink of the ink chamber 9 partly by an ink supply 13, partly by residual ink remaining in the cups 23 of the anilox roller 2 becomes.
  • the doctor blade 8 acts as a kind of pressure relief valve evenly over the entire length of the ink chamber 9.
  • the excess ink is collected by an ink fountain 14 arranged below the squeegee holders 4, 6 and fed back to the ink chamber 9 by means of a pump (not shown), so that an ink cycle is created.
  • the closing squeegee 8 springs back in accordance with the ink pressure and presses against the anilox roller 2 with slight pretension.
  • the pretensioning of the doctor blades 7, 8 is achieved by moving the doctor holder 4, 6 against an adjustable stop 16 arranged on the frame by means of suitable adjusting means (e.g. acting mechanically; electromechanically; pneumatically or hydraulically).
  • suitable adjusting means e.g. acting mechanically; electromechanically; pneumatically or hydraulically.
  • the doctor blade holder 4, 6 has a laterally projecting base plate 17 which can be brought into contact with the stop 16.
  • a distribution chamber 19 designed as an ink storage space is provided, which is connected to at least one ink supply connection 13.
  • the squeegee holder 4, 6 is designed as a squeegee holder 4, 6 which is longitudinally divided into two parts. These are Detachably connected to one another and by means of an inclined underside 21 of the angled doctor blade holder 4 and an inclined top side 22 of the doctor blade holder 6 form a triangular distribution chamber 19. Here, however, the underside 21 and top side 22 do not touch, so that the ink supply slot 18 is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP91105899A 1990-04-23 1991-04-13 Kammerrakel Expired - Lifetime EP0453910B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012825 1990-04-23
DE4012825A DE4012825A1 (de) 1990-04-23 1990-04-23 Kammerrakel

Publications (2)

Publication Number Publication Date
EP0453910A1 EP0453910A1 (de) 1991-10-30
EP0453910B1 true EP0453910B1 (de) 1996-07-31

Family

ID=6404860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105899A Expired - Lifetime EP0453910B1 (de) 1990-04-23 1991-04-13 Kammerrakel

Country Status (5)

Country Link
US (1) US5168806A (enrdf_load_stackoverflow)
EP (1) EP0453910B1 (enrdf_load_stackoverflow)
JP (1) JP2965736B2 (enrdf_load_stackoverflow)
DE (2) DE4012825A1 (enrdf_load_stackoverflow)
RU (1) RU1830007C (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208897C2 (de) * 1992-03-19 1995-02-23 Voith Gmbh J M Auftragswerk zum Beschichten von Bahnen aus Papier oder Karton
FR2689451B1 (fr) * 1992-04-03 1997-01-17 Komori Chambon Dispositif d'encrage pour un appareil d'impression heliographique.
DE4213659C2 (de) * 1992-04-25 1995-06-08 Koenig & Bauer Ag Kurzfarbwerk für eine Rotationsdruckmaschine
DE4213662C2 (de) * 1992-04-25 1995-07-06 Koenig & Bauer Ag Verfahren zum Anstellen einer Kammerrakel für eine Rotationsdruckmaschine
DE4213663C2 (de) * 1992-04-25 1995-06-08 Koenig & Bauer Ag Rakelbalken für ein Kurzfarbwerk einer Rollenrotationsdruckmaschine
DE4213660C2 (de) * 1992-04-25 1995-06-08 Koenig & Bauer Ag Kurzfarbwerk für eine Rollenrotationsdruckmaschine
JP2622054B2 (ja) * 1992-08-07 1997-06-18 ノムラテクノリサーチ株式会社 コーターブレード及びその製造方法
DE4401299C2 (de) * 1994-01-18 1997-04-30 Roland Man Druckmasch Vorrichtung zum Einfärben einer Rasterwalze einer Rotationsdruckmaschine
US5688552A (en) * 1995-12-22 1997-11-18 Panel Prints, Inc. Apparatus and method for preparing cylinders in offset lithographic printing presses
IT1286801B1 (it) * 1996-12-04 1998-07-17 Gd Spa Dispositivo gommatore per l'applicazione di una sostanza adesiva a materiale in foglio
DE29807941U1 (de) * 1998-05-04 1999-09-09 MAN Roland Druckmaschinen AG, 63075 Offenbach Rakeleinrichtung
DE19901525C2 (de) * 1999-01-16 2001-02-08 Vits Maschinenbau Gmbh Anlage zum Imprägnieren und Beschichten von Papier
US20020152904A1 (en) * 2001-04-23 2002-10-24 Pascal Ross Doctor blade design for metering ink transfer to anilox cells
DE102005050735A1 (de) * 2005-10-22 2007-04-26 Koenig & Bauer Ag Kammerrakel für Druckmaschinen und Verfahren zum Betreiben einer derartigen Kammerrakel
DE102008019433A1 (de) * 2008-04-17 2009-12-03 Hauni Maschinenbau Ag Beleimung von Materialstreifen der Tabak verarbeitenden Industrie
US8186296B2 (en) 2010-05-05 2012-05-29 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9248054B2 (en) 2012-11-27 2016-02-02 The Procter & Gamble Company Methods and apparatus for making elastic laminates
US9265672B2 (en) 2012-11-27 2016-02-23 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9295590B2 (en) 2012-11-27 2016-03-29 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
DE102014223200A1 (de) 2013-11-19 2015-05-21 Koenig & Bauer Aktiengesellschaft Einrichtung zum Beschichten von Bedruckstoffen
JP2016215474A (ja) * 2015-05-19 2016-12-22 凸版印刷株式会社 凸版印刷装置及び有機機能性素子
US11707548B2 (en) 2018-10-09 2023-07-25 The Procter & Gamble Company Absorbent article comprising a lotion resistant polymeric filler composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704433A1 (de) * 1987-02-12 1988-08-25 Frankenthal Ag Albert Kurzfarbwerk
EP0350839A2 (de) * 1988-07-09 1990-01-17 Fischer & Krecke Gmbh & Co. Farbauftragssystem für Druckfarben in Rotations-Druckwerken

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB509447A (en) * 1938-04-12 1939-07-17 John Wood Armstrong Improvements relating to gravure printing machines
US2399688A (en) * 1942-03-09 1946-05-07 Standard Register Co Ink fountain
US2869460A (en) * 1957-02-27 1959-01-20 Emory W Worthington Rotary letterpress ink fountain
US3863597A (en) * 1971-02-03 1975-02-04 Lodewijk Anselrode Device for applying a coating layer
US4008664A (en) * 1973-07-23 1977-02-22 Harris-Intertype Corporation Ink key control system
CA1108469A (en) * 1976-12-21 1981-09-08 John Grosart Inking device
DE3737531A1 (de) * 1987-11-05 1989-05-18 Koenig & Bauer Ag Farbauftragsleiste fuer ein spuelfarbwerk einer rotationsdruckmaschine
DE3838546A1 (de) * 1988-01-09 1989-07-20 Frankenthal Ag Albert Rakeleinrichtung
DE3800411A1 (de) * 1988-01-09 1989-07-20 Frankenthal Ag Albert Farbwerk
DE3800412A1 (de) * 1988-01-09 1989-07-20 Frankenthal Ag Albert Farbwerk
DE3832148A1 (de) * 1988-09-22 1990-04-05 Roland Man Druckmasch Farbwerk mit einem kammerrakel
EP0368485A3 (en) * 1988-10-31 1991-01-30 Seiken Graphics, Inc. Improvements in or relating to lithographic printing
DE3843017C1 (enrdf_load_stackoverflow) * 1988-12-21 1990-05-23 Man Roland Druckmaschinen Ag, 6050 Offenbach, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704433A1 (de) * 1987-02-12 1988-08-25 Frankenthal Ag Albert Kurzfarbwerk
EP0350839A2 (de) * 1988-07-09 1990-01-17 Fischer & Krecke Gmbh & Co. Farbauftragssystem für Druckfarben in Rotations-Druckwerken

Also Published As

Publication number Publication date
US5168806A (en) 1992-12-08
DE4012825A1 (de) 1991-10-24
EP0453910A1 (de) 1991-10-30
RU1830007C (ru) 1993-07-23
DE4012825C2 (enrdf_load_stackoverflow) 1993-08-12
JP2965736B2 (ja) 1999-10-18
DE59108041D1 (de) 1996-09-05
JPH04224959A (ja) 1992-08-14

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