EP0616075B1 - Système de raclage - Google Patents

Système de raclage Download PDF

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Publication number
EP0616075B1
EP0616075B1 EP94102521A EP94102521A EP0616075B1 EP 0616075 B1 EP0616075 B1 EP 0616075B1 EP 94102521 A EP94102521 A EP 94102521A EP 94102521 A EP94102521 A EP 94102521A EP 0616075 B1 EP0616075 B1 EP 0616075B1
Authority
EP
European Patent Office
Prior art keywords
doctor
bed
clamping
doctor blade
blade
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
EP94102521A
Other languages
German (de)
English (en)
Other versions
EP0616075A1 (fr
Inventor
Richard Bernert
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0616075A1 publication Critical patent/EP0616075A1/fr
Application granted granted Critical
Publication of EP0616075B1 publication Critical patent/EP0616075B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • the invention relates to a doctor system according to the preamble of claim 1.
  • a doctor system is known from GB-A-2.042.937.
  • the doctor blade support blade is generally also a leaf spring.
  • the doctor system known from DE-A-2.008.082 it is possible under certain circumstances because the doctor bed is vulcanized onto the retaining blade and the press hose acts on the doctor bed and thus the doctor rod via the vulcanized-on part of the retaining blade.
  • doctor beds that have formed a retaining strip by means of which it is attached to the retaining blade. This makes it easier to replace the doctor beds without having to throw away the holding blade. With these arrangements, it is almost impossible to replace a doctor bed including a doctor bar and holding blade with a doctor blade without major modifications.
  • the holding blade and the doctor blade should be fixed in the same clamping.
  • the doctor bed 1 is arranged in a lower quadrant of the counter roll W with the doctor rod 2 carried by it. Squeegee bed and squeegee rod are pressed against the counter roller via pressure piece 5 and press hose 3. The pressure piece is guided in a guide 9 essentially horizontally. The press hose is held in an extension 6 of the pressure piece 5.
  • the doctor bed 1 is clamped to the leaf spring-like holding blade 7 by its terminal strip 4, which is designed as an extension. This extension is located at a distance from the back of the doctor bed opposite the doctor rod 2, on which the press hose 3 engages. In the extension of the back of the doctor bed is the holding blade 7, so that both parts are essentially in one plane.
  • the holding blade 7 is clamped in the holder 8 by means of a slide 8 '. If the doctor bed 1 is replaced by a doctor blade 10, this runs exactly in the plane of the holding blade 7, as indicated by the dash-dotted line. A slight swiveling of the squeegee system is sufficient to bring the coating blade against the counter-roller W.
  • the offset of the pressure line of the pressure hose 3 on the doctor bed in relation to the central plane of the pressure piece 5 also provides a suitable pressure line for the doctor blade, whereby no major disadvantages arise due to the offset of the pressure line of the pressure hose on the doctor rod 2.
  • the holding strip 4 is offset in the direction of the clamping 8, 8 'with respect to the doctor bed or attached to this.
  • the clamping bar 4 'of the doctor bed is offset in the opposite direction and is located in the end region of an inclined surface 14 on the front of the doctor bed.
  • the inclination of this surface - or its chord, if it is curved - with respect to the connecting plane between the center line of the doctor rod 2 and the press tube 3 is between 45 and 55 °.
  • the other parts match and have the same reference numerals, possibly with a comma.
  • Doctor blade 10 which is inserted into the clamping 8, 8 ', it extends to the "height" h.
  • the doctor blade system is preferably arranged in an angular range between 20 and 60 ° - measured from the base point of the roller W - in its lower quadrant of its cross section. As you can see, the doctor bed has enough space between the pressure piece and its clamping and the roller W. In the case of the doctor blade, there is of course no need to fear a spatial narrowness - because of the narrowness of the doctor blade.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Cyclones (AREA)
  • Rotary Presses (AREA)

Claims (4)

  1. Système de racle, de préférence pour dispositif d'enduction, comprenant des moyens de serrage (8, 8'), qui, par l'intermédiaire d'une lame de maintien (7, 7'), maintiennent un porte-racle (1, 1') portant une barre de racle (2), et un tuyau souple de pression qui applique le porte-racle et donc la barre de racle sur un cylindre complémentaire (W), tandis qu'une baguette de serrage (4, 4'), prévue sur la face arrière du porte-racle (1, 1'), sert à maintenir le porte-racle sur la lame de maintien (7, 7'), caractérisé en ce que la baguette de serrage (4, 4') est montée d'une manière décalée vis-à-vis d'une zone centrale de la face arrière du porte-racle, de sorte qu'il subsiste, sur cette face, une surface d'attaque qui sert de surface d'application de pression pour le tuyau souple de pression (3) et qui est située pratiquement dans le plan passant par la lame de maintien (7, 7'), et en ce que la baguette de serrage (4, 4') est réalisée sous forme d'une partie de prolongement du porte-racle (1, 1').
  2. Système de racle selon la revendication 1, caractérisé en ce qu'il est prévu une surface frontale inclinée (14) du porte-racle (1') qui s'étend en s'éloignant de la barre de racle (2) et dans le sens opposé aux moyens de serrage de la lame de maintien (8, 8') et qui est disposée suivant un angle compris entre 45 et 55° vis-à-vis du plan de liaison passant par l'axe central de la barre de racle (2) et la ligne d'application du tuyau souple de pression (3) et en ce que la baguette de serrage (4') est située dans cette zone du porte-racle (1') qui est éloignée des moyens de serrage de la lame de maintien (8').
  3. Système de racle selon la revendication 1, caractérisé en ce que la baguette de serrage (4) est située plus près des moyens de serrage de la lame de maintien (8) que le porte-racle (2) et fait saillie au-delà du porte-racle (2) en direction des moyens de serrage.
  4. Système de racle selon l'une des revendications 1-3, caractérisé en ce qu'il est disposé dans le quadrant inférieur du cylindre (W) dans une zone angulaire, mesurée à partir du point de base de ce cylindre, qui est comprise entre 20 et 60°.
EP94102521A 1993-03-16 1994-02-19 Système de raclage Expired - Lifetime EP0616075B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4308302A DE4308302A1 (en) 1993-03-16 1993-03-16 Coating scraper assembly - has bed exchange action without discarding holding blades and without dismantling
DE4308302 1993-03-16

Publications (2)

Publication Number Publication Date
EP0616075A1 EP0616075A1 (fr) 1994-09-21
EP0616075B1 true EP0616075B1 (fr) 1997-05-02

Family

ID=6482909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102521A Expired - Lifetime EP0616075B1 (fr) 1993-03-16 1994-02-19 Système de raclage

Country Status (7)

Country Link
US (1) US5417761A (fr)
EP (1) EP0616075B1 (fr)
JP (1) JPH06316891A (fr)
AT (1) ATE152495T1 (fr)
CA (1) CA2119214A1 (fr)
DE (2) DE4308302A1 (fr)
FI (1) FI107887B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29510486U1 (de) * 1995-06-30 1995-08-17 Voith Sulzer Papiermasch Gmbh Rollrakel-Baugruppe
DE19626580A1 (de) * 1996-07-02 1998-01-08 Jagenberg Papiertech Gmbh Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
US6389669B1 (en) 1999-05-25 2002-05-21 John Moscone Doctor blade extractor
US6202252B1 (en) 1999-06-03 2001-03-20 Valmet Ltd. Doctoring apparatus
US6697594B1 (en) 2002-09-13 2004-02-24 Lexmark International, Inc. Doctor blade support for an image forming apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143438A (en) * 1960-07-26 1964-08-04 West Virginia Pulp & Paper Co Apparatus for coating web material
US3559572A (en) * 1969-05-14 1971-02-02 Us Plywood Champ Papers Inc Method of inking a printing roll using a metering roll and revolving doctor rod
DE2008082B2 (de) * 1970-02-21 1973-05-03 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum regeln der auftragsstaerke beim beschichten laufender werkstoffbahnen
DE2851015C2 (de) * 1978-11-24 1982-07-08 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Regeln der Auftragsstärke beim Beschichten laufender Materialbahnen
US4245582A (en) * 1979-02-02 1981-01-20 Beloit Corporation Adjustable rod holder for metering rod coaters
US4452833A (en) * 1982-02-08 1984-06-05 Consolidated Papers, Inc. Paper coating method
DE3311081A1 (de) * 1983-03-26 1984-09-27 J.M. Voith Gmbh, 7920 Heidenheim Rakelhalterung
FI73266C (fi) * 1984-06-29 1987-09-10 Waertsilae Oy Ab Stavskavare foer pappersbelaeggningsanordning.
FI85897C (fi) * 1990-04-19 1992-06-10 Valmet Paper Machinery Inc Foerfarande foer begraensning av bestryckningsbredd vid bestryckning av papper eller kartong och anordning avsedd foer foerverkligande av foerfarandet.
DE4217528C2 (de) * 1992-05-27 1996-05-30 Voith Gmbh J M Streicheinrichtung für laufende Warenbahnen

Also Published As

Publication number Publication date
EP0616075A1 (fr) 1994-09-21
DE59402581D1 (de) 1997-06-05
FI941006A0 (fi) 1994-03-02
US5417761A (en) 1995-05-23
DE4308302A1 (en) 1993-08-05
JPH06316891A (ja) 1994-11-15
ATE152495T1 (de) 1997-05-15
CA2119214A1 (fr) 1994-09-17
FI941006A (fi) 1994-09-17
FI107887B (fi) 2001-10-31

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