EP1106353B1 - Procédé et dispositif pour le dépoussiérage d'un support d'impression - Google Patents

Procédé et dispositif pour le dépoussiérage d'un support d'impression Download PDF

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Publication number
EP1106353B1
EP1106353B1 EP99122353A EP99122353A EP1106353B1 EP 1106353 B1 EP1106353 B1 EP 1106353B1 EP 99122353 A EP99122353 A EP 99122353A EP 99122353 A EP99122353 A EP 99122353A EP 1106353 B1 EP1106353 B1 EP 1106353B1
Authority
EP
European Patent Office
Prior art keywords
roller
dust
printing
doctor blade
substrate
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
EP99122353A
Other languages
German (de)
English (en)
Other versions
EP1106353A1 (fr
Inventor
Karl-Heinz Rahenkamp
Wilfried Dr. Kolbe
Manfred Terstegen
Klaus Schirrich
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.)
Fischer and Krecke GmbH and Co KG
Original Assignee
Fischer and Krecke GmbH and Co KG
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 Fischer and Krecke GmbH and Co KG filed Critical Fischer and Krecke GmbH and Co KG
Priority to EP99122353A priority Critical patent/EP1106353B1/fr
Priority to DE59904230T priority patent/DE59904230D1/de
Priority to ES99122353T priority patent/ES2190166T3/es
Publication of EP1106353A1 publication Critical patent/EP1106353A1/fr
Application granted granted Critical
Publication of EP1106353B1 publication Critical patent/EP1106353B1/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
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/002—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing cleaning devices for sheets or webs

Definitions

  • the invention relates to a device for dedusting of printing material in Printing machines and a flexographic printing machine with such a device.
  • Devices according to the preamble of claim 1, in which a moistened Roller rolls on the substrate, are from DE-C-237 919 and NL-A-79 03 999th known.
  • the object of the invention is to provide a cost-effective device, the enables effective dedusting of substrates in a printing press.
  • a device for dedusting of printing substrate in a printing machine with a roller using or rolls without slippage on the substrate, a device for moistening the surface of the roller and a device arranged on the circumference of this roller for removing the dust from the roll surface at which the roll an anilox roller having a cell pattern on its surface, and the means for wetting the roller is a chambered doctor blade.
  • the roller is an anilox roller, as in flexographic printing machines is used as an inking roller.
  • anilox rollers have on their Surface a fine cell grid on and can therefore be controlled in Moisten the method with the help of a chamber doctor blade.
  • These anilox rolls and the associated chamber doctor blades can be identical to the anilox rollers and Chamber knives, which are present in every inking unit of a flexographic printing machine are. In this way, the dedusting can be in cheaper Realize manner with standard components.
  • the apparatus according to the invention can serve for dedusting Anilox roller be actively driven.
  • the roll is a hollow roll and / or has a relatively small diameter, however, its moment of inertia can be so small that it is possible to let the roller passively pass only.
  • the slip can, for example by the braking effect is achieved, which is inevitable when doctoring the roll surface occurs.
  • the liquid used to wet the roller may be Water, the optional suitable additives, eg. As surfactants may be added to improve the adhesion effect and / or the removal of the To facilitate dust from the roll surface.
  • FIG. 1 shows a counter-pressure cylinder 10 of a flexographic printing machine, which is produced by the printing substrate 12, for example a paper web, is looped around.
  • the printing substrate 12 for example a paper web
  • Farther one of several inking units 14 is shown at the periphery of the impression cylinder 10 are arranged and in each case a pressure cylinder 16, a Application roller 18 and a chamber doctor blade 20 for coloring the applicator roll include.
  • the printing material 12 Before the printing material 12 reaches the impression cylinder 10, it runs over a dedusting device 22, which in Figure 1 for clarity is shown exaggeratedly large.
  • This dedusting device 22 has a Roll 24 up.
  • the printing material 12 runs with slight deflection over the peripheral surface the roller 24, whose peripheral speed approximately with the Web speed of the substrate matches. Because the tension the printing material is controlled in a known manner, the printing material runs with Controlled pressure force on the roller 24.
  • the roller 24 is an anilox roller corresponding to the anilox roller 18, which has a fine grid of wells 26 on its surface, that exaggerated in Figure 1 on a part of the circumference of this roller is.
  • a known chamber doctor blade 28 At the periphery of the roller 24 is opposite to the substrate 12 Side employed a known chamber doctor blade 28, but here not for coloring, but for wetting the roller 24 is used with water.
  • the surface of the roller 24 passes through the chambered doctor blade 28 small amounts of water in the wells 26 retained so that the roller 24th is moistened in a controlled manner. The so moistened roller surface Then comes with the substrate 12 in contact, so that the s.den printing material Adhesive dust due to the greater adhesion of the moist Roller 24 is transferred to the roll surface.
  • a doctor blade 30 In the direction of rotation behind the contact zone between the substrate 12th and the roller 24 is arranged on the circumference of the roller 24, a doctor blade 30, by means of which the dust adhering to the roll surface is scraped off or scraped off becomes. The thus removed from the roller 24 dust falls into a drip tray 32nd
  • the chamber doctor blade 28 is continuously connected via an inlet 34 and a return 36 or rinsed with pure water at intervals.
  • the inlet 34 is formed as an elongated nozzle, which is within the doctoring chamber widened to a slot die and directed to the peripheral surface of the roller 24 is, so that the roller 24 across the entire width with a leaving the nozzle Water jet is washed.
  • the removal can the dust particles from the roller 24 alone with the help of the chamber doctor blade 28 are effected, so that can be dispensed with the doctor blade 30.
  • FIG. 2 shows a dedusting device 38, which is similar to the dedusting device 22 according to FIG. 1, an anilox roller 24 and a chamber doctor blade 28 has.
  • the printing substrate 12 runs over here with slight deflection a platen roller 40 which forms a nip with the roller 24. Of the Pressure in this nip is adjustable in a known manner.
  • the roller 24 rotates counterclockwise, and the substrate runs from bottom to top through the nip. In turn is in ration direction behind the contact zone between the substrate 12 and the roller 24, a doctor blade 30 is arranged, with which the Dust is removed from the roll surface.
  • Supporting here is one Suction nozzle 42 is provided, which by means of the doctor blade 30 from the roll surface vacuuming detached dust. Due to the moistening of the roller 24, a "cake" of wet dust can accumulate on the doctor blade 30, which is then removed by means of the suction nozzle 42.
  • the suction nozzle 42 may be a Be slot die. Optionally, however, it may also be a nozzle tube act, which is moved in the axial direction of the roller 24 back and forth, so that the Dust, which collects in front of the cutting edge of the doctor blade 30, periodically sucked becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Advancing Webs (AREA)

Claims (4)

  1. Dispositif de dépoussiérage d'un support d'impression (12) dans une machine à imprimer, comportant un rouleau (24) qui roule avec ou sans glissement sur le support d'impression (12), un dispositif (28) pour humidifier la surface du rouleau (24) et un dispositif (30 ; 42) disposé sur la circonférence de ce rouleau pour éliminer en continu la poussière de la surface du rouleau, caractérisé en ce que le rouleau (24) est un rouleau tramé qui présente sur sa surface une trame de godets (26) et en ce que le dispositif d'humidification du rouleau (24) est une racle à peigne (28).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif pour éliminer en continu la poussière de la surface du rouleau est une lame de raclage (30).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le dispositif pour éliminer en continu la poussière de la surface du rouleau comporte une buse d'aspiration (42).
  4. Machine à imprimer flexographique caractérisée par un dispositif selon l'une des revendications 1 à 3.
EP99122353A 1999-11-10 1999-11-10 Procédé et dispositif pour le dépoussiérage d'un support d'impression Expired - Lifetime EP1106353B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99122353A EP1106353B1 (fr) 1999-11-10 1999-11-10 Procédé et dispositif pour le dépoussiérage d'un support d'impression
DE59904230T DE59904230D1 (de) 1999-11-10 1999-11-10 Verfahren und Vorrichtung zur Entstaubung von Bedruckstoff
ES99122353T ES2190166T3 (es) 1999-11-10 1999-11-10 Procedimiento y dispositivo para el desempolvado de un soporte de impresion.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99122353A EP1106353B1 (fr) 1999-11-10 1999-11-10 Procédé et dispositif pour le dépoussiérage d'un support d'impression

Publications (2)

Publication Number Publication Date
EP1106353A1 EP1106353A1 (fr) 2001-06-13
EP1106353B1 true EP1106353B1 (fr) 2003-02-05

Family

ID=8239361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122353A Expired - Lifetime EP1106353B1 (fr) 1999-11-10 1999-11-10 Procédé et dispositif pour le dépoussiérage d'un support d'impression

Country Status (3)

Country Link
EP (1) EP1106353B1 (fr)
DE (1) DE59904230D1 (fr)
ES (1) ES2190166T3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740044A1 (de) * 1987-11-26 1989-06-08 Kotterer Grafotec Vorrichtung zum abnehmen von verunreinigungen von einem bedruckstoff

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50672C (de) * G. DUNCAN, 30 Fairfield Crescent, Liverpool, und i J. SALMON, Blackfriars Bridge, Manchester Apparat zur Bogenreinigung
DE243851C (fr) *
DE237919C (fr) *
DE2705477A1 (de) * 1977-02-10 1978-08-17 Larry G Boyd Vorrichtung zum entfernen von feststoffteilchen von dem zu bedruckenden material einer druckmaschine
NL7903999A (nl) * 1979-05-21 1980-11-25 Stork Brabant Bv Reinigingswerkwijze, alsmede stofafname inrichting ten behoeve van drukmachines.
DE8813228U1 (fr) * 1988-10-21 1988-12-22 Grafotec Kotterer Gmbh, 8901 Diedorf, De
JP2970987B2 (ja) * 1994-03-18 1999-11-02 株式会社コムテック 印刷用紙の紙面拭き取り装置
DE19903887A1 (de) * 1998-02-23 1999-08-26 Heidelberger Druckmasch Ag Verfahren und Bogenrotationsdruckmaschine zum Beidseitigen Bedrucken eines Bedruckstoffbogens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740044A1 (de) * 1987-11-26 1989-06-08 Kotterer Grafotec Vorrichtung zum abnehmen von verunreinigungen von einem bedruckstoff

Also Published As

Publication number Publication date
ES2190166T3 (es) 2003-07-16
EP1106353A1 (fr) 2001-06-13
DE59904230D1 (de) 2003-03-13

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