EP0403749B1 - Dispositif de revêtement - Google Patents

Dispositif de revêtement Download PDF

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Publication number
EP0403749B1
EP0403749B1 EP90107008A EP90107008A EP0403749B1 EP 0403749 B1 EP0403749 B1 EP 0403749B1 EP 90107008 A EP90107008 A EP 90107008A EP 90107008 A EP90107008 A EP 90107008A EP 0403749 B1 EP0403749 B1 EP 0403749B1
Authority
EP
European Patent Office
Prior art keywords
coating
magnets
blade
coating apparatus
coating 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
EP90107008A
Other languages
German (de)
English (en)
Other versions
EP0403749A3 (fr
EP0403749A2 (fr
Inventor
Hans-Peter Dr. Sollinger
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
Priority to AT90107008T priority Critical patent/ATE98529T1/de
Publication of EP0403749A2 publication Critical patent/EP0403749A2/fr
Publication of EP0403749A3 publication Critical patent/EP0403749A3/fr
Application granted granted Critical
Publication of EP0403749B1 publication Critical patent/EP0403749B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B05C11/04—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 with blades
    • B05C11/041—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 with blades characterised by means for positioning, loading, or deforming the blades

Definitions

  • the invention relates to a coating device for coating running webs, in particular made of paper or cardboard, according to the preamble of patent claim 1.
  • Such devices are widely known, e.g. from DE-B-30 01 073.
  • a screen printing device to arrange a magnetic strip parallel to the contact edge of the coating blade to adjust the contact pressure of a coating blade, said magnetic strip essentially acting on the holder consisting of ferromagnetic material.
  • the doctor blade is pressed somewhat arcuately on the sieve template designed in the form of a round cylinder. In this case, there is essentially a uniform contact pressure over the length of the coating blade or the screen template.
  • pressure hoses When applying pressure forces, pressure hoses are often used in coating devices. It can be used to clamp a squeegee designed as a doctor blade in the holder and also to exert pressure on the squeegee to control the thickness of the coating applied to the paper.
  • a squeegee designed as a doctor blade in the holder
  • strip-shaped pressure pieces are used, which are adjustable against the coating blade by means of screws and thus control their contact pressure.
  • the so-called cross profile of the stroke order i.e. Control in the width or cross direction of the paper web in such a way that a line profile that is as uniform as possible, i.e. basically no profile at all, namely a uniform layer thickness.
  • the disadvantage here is that the local control of the contact pressure of the coating blade means that the contact angle ⁇ of the narrow coating edge of the coating blade on the paper web varies somewhat. This is disadvantageous in order to produce a uniform stroke application, also because the coating edge of the coating blade is ground unevenly.
  • the object of the invention in contrast, is to provide a device with which the transverse profile of the line application can be controlled without the disadvantageous effects described.
  • a coating device has become known from AT-B-386 762, in which magnetic forces act on a doctor element which is designed as a coating strip.
  • This doctor element is part of a larger arrangement, which also has the feed chamber for the coating slip and is suspended in an oscillating manner, so that it essentially floats on the material web or the coating slip applied thereon.
  • the scraper bar has a contour which essentially corresponds to the counter roll guiding the web or to the web guide resulting from the guidance of the web over the counter roll with partial wrapping around the same. It is not a question of an unchangeability of the position of the coating element in relation to the material web, but on the contrary, the coating effect is brought about here by a displacement of the coating strip while pivoting the entire coating arrangement comprising it.
  • the web is denoted by C, on which the doctor blade 1 rests with a contact pressure set by setting the doctor beam 13, 14.
  • This contact pressure can be generated by, for example, pivoting the doctor beam 14 about a pivot axis 23.
  • the doctor blade 1 serving as a squeegee is clamped in a holding strip 13 of the squeegee bar 14 via pressure piece 8 and counter pressure piece 12.
  • a pressure bar 9 serves to generate the necessary contact pressure by means of an S-shaped deflection of the coating blade.
  • individual electromagnets 4, 5 (4 is the coil, 5 is the core made of iron) are now provided as a control device for the transverse profile, which are mounted in a carriage 3 by means of a holding sleeve 6.
  • the entire profile correction device is designated by 2. This also includes a bearing cam 16 in which actuating rods 18 engage the carriage 3 by means of bolts 17.
  • the carriage is arranged in a guide 7 of the retaining strip 13 so as to be displaceable against the doctor blade of the paper web.
  • the feed lines to the electromagnets are designated 19 and 20, which run in an envelope 21.
  • the electromagnets locally exert a line load q f on the area of the coating blade 1 close to the paper web or the counter roller 10. These counteract the contact pressure F and thus control the cross profile of the stroke application.
  • the basic contact pressure is generated by the displacement ⁇ s by means of the pressure bar 9.
  • the magnetic induction of the magnets is controlled via their coil current in accordance with the locally required contact pressure of the coating blade 1.
  • a permanent magnet 4 ' can be used as a magnet and a hose 24 can be used as a pressure piece, which can also perform the function as the pressure bar 9. This is already known from other publications.
  • the individual permanent magnets are precisely adjusted in their distance from the doctor blade 1 in order to control their contact pressure.
  • the doctor blade 1 is clamped on the doctor bar 31 by a clamping strip 32.
  • a pressure bar 29 for setting a contact pressure of the doctor blade 1 is guided in a guide 30.
  • the drive for this pressure bar is given here by a pressure hose 35.
  • other drive options also come, e.g. by means of hydraulic pistons or via linkage and lever, in question.
  • the profile correction is effected here by individual magnets 25, which are arranged in a row parallel to the abutting edge of the coating blade 1 and counter-roller on the doctor bar 31.
  • These magnets can be electromagnets, which consist of a yoke plate 34, a sleeve 33 and a wire coil 28 contained therein, arranged around an iron core, as shown in dashed lines.
  • the magnets can be adjusted by means of a lifting plate 27 via an adjusting rod 37.
  • the current strengths of the coils 28 can be adjustable in order to control the field strength of the coils.
  • the doctor blade 1 is attracted to different degrees in its area opposite the magnet, and thus the contact pressure of the doctor blade on the counter roller or web C varies significantly.
  • the doctor blade has a shape that is composed of two arch parts, the arch part close to the clamping being curved to the left and the other arch part to the right in the drawing.
  • the magnets 25 are arranged at the beginning of the curved part to the right. Depending on the design options, the magnets can also be moved closer to the pressure bar 29.
  • permanent magnets can also be selected, which are adjustable by means of the lifting rods 37, depending on a signal which measures the stroke application or its profile. Likewise, the current is controlled in the same way in the case of electromagnets.

Landscapes

  • Coating Apparatus (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surgical Instruments (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Outer Garments And Coats (AREA)

Claims (10)

  1. Dispositif de couchage, compronant un docteur se présentant sous la forme d'une lame de couchage (1) qui est fixée par serrage, et prend appui, sur une barre de docteur (13, 14), la force d'application de la lame de couchage (1) étant réalisée au moyen de la flexion de Cette lame de couchage (1) en vue de l'enduction d'une nappe (C) en papier ou en carton, caractérisé en ce que plusieurs aimants (4, 5 ; 4' ; 25) sont disposés sur la barre de docteur (13, 14) suivant une rangée parallèle à l'arête d'application de la lame de couchage (1), ces aimants exerçant, en vue du réglage du profil de l'enduction déposée, des forces magnétiques de traction (qF) agissant sur la partie courbe de la lame de couchage (1) qui est située près de la nappe (C).
  2. Dispositif de couchage suivant la revendication 1, caractérisé en ce que, dans le cas de moyens (9), à position éventuellement réglable, d'appui de la lame de couchage (1) entre les moyens de serrage (12) de cette dernière et son arête d'application sur la nappe de matière (C) ou sur un dispositif d'appui guidant cette dernière, les aimants (4, 5 ; 4') sont disposés sur la barre de docteur (13, 14) entre les moyens d'appui (9) de la lame de couchage (1) et le dispositif d'appui de la nappe de matière (C).
  3. Dispositif de couchage suivant la revendication 2, caractérisé en ce que la réglette d'appui (29) de la lame de couchage (1) est disposée d'une manière mobile en direction du dispositif d'appui servant à l'appui de la nappe de produit (C).
  4. Dispositif de couchage suivant l'une des revendications 1 à 3, caractérisé en ce que les aimants sont des électro-aimants (4, 5).
  5. Dispositif de couchage suivant la revendication 4, caractérisé en ce qu'en vue du réglage du profil, l'induction magnétique des électro-aimants (4, 5) est réglable en fonction de la correction exigée pour le profil.
  6. Dispositif de couchage suivant l'une des revendications 1 à 3, caractérisé en ce que les aimants sont des aimants permanents (4').
  7. Dispositif de couchage suivant l'une des revendications 1 à 6, caractérisé en ce que les aimants (4, 5) sont disposés de façon que leur position sur la barre de docteur (13, 14) puisse être réglée en direction de la lame de couchage, perpendiculairement à leur agencement en rangée;
  8. Dispositif de couchage suivant la revendication 7, caractérisé en ce que les aimants sont disposés sur des coulisseaux (3) qui sont agencés de façon à pouvoir être déplacés dans une glissière (7) de la barre de docteur (14) ou d'une pièce de support (13) solidaire de cette dernière.
  9. Dispositif de couchage suivant l'une des revendications 1 à 8, caractérisé en ce que les moyens d'appui de la lame de couchage (1) sont constitués par une réglette d'appui (9) rigide.
  10. Dispositif de couchage suivant l'une des revendications 1 à 9, caractérisé en ce que les moyens d'appui de la lame de couchage (1) sont constitués par un tuyau souple de pression (24).
EP90107008A 1989-06-22 1990-04-11 Dispositif de revêtement Expired - Lifetime EP0403749B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90107008T ATE98529T1 (de) 1989-06-22 1990-04-11 Streicheinrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3920445 1989-06-22
DE3920445 1989-06-22
DE4008435 1990-03-16
DE4008435A DE4008435A1 (de) 1989-06-22 1990-03-16 Streicheinrichtung

Publications (3)

Publication Number Publication Date
EP0403749A2 EP0403749A2 (fr) 1990-12-27
EP0403749A3 EP0403749A3 (fr) 1991-11-27
EP0403749B1 true EP0403749B1 (fr) 1993-12-15

Family

ID=25882219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107008A Expired - Lifetime EP0403749B1 (fr) 1989-06-22 1990-04-11 Dispositif de revêtement

Country Status (9)

Country Link
US (1) US5085168A (fr)
EP (1) EP0403749B1 (fr)
JP (1) JPH0330867A (fr)
BR (1) BR9002990A (fr)
CA (1) CA2018804A1 (fr)
DE (2) DE4008435A1 (fr)
ES (1) ES2047743T3 (fr)
FI (1) FI903063A0 (fr)
NO (1) NO177796C (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI91025C (fi) * 1991-02-08 1995-08-22 Valmet Paper Machinery Inc Menetelmä paperin tai muun rainamateriaalin päällystemäärän poikkiprofiilin säätämiseksi ja menetelmän toteuttamiseen tarkoitettu päällystysasema
FI100313B (fi) * 1991-05-09 1997-11-14 Valmet Corp Menetelmä ja laite liikkuvan alustan päällystämiseksi
GB2259262B (en) * 1991-09-03 1995-04-12 Univ Hull Blade control system
DE4130118C2 (de) * 1991-09-11 1995-04-20 Jagenberg Ag Vorrichtung zum Beschichten einer um eine Gegenwalze geführten Materialbahn, insbesondere einer Papier- oder Kartonbahn
US5242498A (en) * 1992-08-04 1993-09-07 The Kohler Coating Machinery Corporation Adjustable blade coater
DE4302373A1 (de) * 1993-01-28 1994-08-04 Voith Gmbh J M Streicheinrichtung für laufende Bahnen aus Papier oder Karton
FI94269C (fi) * 1993-04-16 1995-08-10 Valmet Paper Machinery Inc Menetelmä ja sovitelma kaavinterän kuormittamiseksi
FR2705613B1 (fr) * 1993-05-27 1995-11-24 Roland Man Druckmasch Racle à chambre.
DE4401737C1 (de) * 1994-01-21 1995-05-04 Voith Gmbh J M Streicheinrichtung
JP3331735B2 (ja) * 1994-04-15 2002-10-07 ソニー株式会社 塗布装置
DE19627688A1 (de) * 1996-07-10 1998-01-15 Jagenberg Papiertech Gmbh Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE19637164A1 (de) * 1996-09-12 1998-03-19 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
EP0848110B1 (fr) * 1996-12-13 2003-03-05 Beloit Technologies, Inc. Tête de couchage dont la lame est mise en forme
DE19843733A1 (de) * 1998-09-24 2000-03-30 Voith Sulzer Papiertech Patent Rakelvorrichtung
DE19904112A1 (de) * 1999-02-02 2000-08-03 Voith Sulzer Papiertech Patent Egalisier-/Dosier-Vorrichtung
JP4711495B2 (ja) 2000-08-08 2011-06-29 スリーエム イノベイティブ プロパティズ カンパニー 塗布装置
ES2310976B1 (es) * 2007-07-11 2009-11-19 Jose Joaquin Amonarriz Azcolain Aparato rascador para la industria papelera.
DE102022112542A1 (de) 2022-05-19 2023-11-23 Voith Patent Gmbh Vorrichtung, Verwendung und Verfahren zum Dosieren oder Egalisieren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688336A (en) * 1970-07-16 1972-09-05 Lodding Engineering Corp Extended-life doctoring apparatus
US3882817A (en) * 1974-01-11 1975-05-13 Black Clawson Co Doctor Blade Assembly
AT363901B (de) * 1976-09-14 1981-09-10 Zimmer Johannes Rakelanordnung
DE3001073B1 (de) * 1980-01-14 1981-06-04 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Aufbringen einer Beschichtung auf eine Materialbahn
DE3313972A1 (de) * 1983-04-18 1984-10-18 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum ein- und vorspannen eines elastischen streichmessers
AT386762B (de) * 1985-05-08 1988-10-10 Zimmer Johannes Verfahren und vorrichtung zum impraegnierenden und/oder beschichtenden auftragen auf eine warenbahn
SE447545B (sv) * 1985-06-12 1986-11-24 Inventing Ab Sett och anordning vid bladbestrykning av en lopande materialbana
ATE85904T1 (de) * 1987-10-10 1993-03-15 Johannes Zimmer Auftragungsvorrichtung.

Also Published As

Publication number Publication date
US5085168A (en) 1992-02-04
JPH0330867A (ja) 1991-02-08
EP0403749A3 (fr) 1991-11-27
DE4008435A1 (de) 1991-01-03
NO177796C (no) 1995-11-22
BR9002990A (pt) 1991-08-20
NO177796B (no) 1995-08-14
EP0403749A2 (fr) 1990-12-27
ES2047743T3 (es) 1994-03-01
DE59003847D1 (de) 1994-01-27
CA2018804A1 (fr) 1990-12-22
NO902080D0 (no) 1990-05-10
FI903063A0 (fi) 1990-06-18
NO902080L (no) 1990-12-27

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