EP0622492B1 - Dispositif d'enduction pour une bande en mouvement de papier ou carton - Google Patents

Dispositif d'enduction pour une bande en mouvement de papier ou carton Download PDF

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Publication number
EP0622492B1
EP0622492B1 EP94105841A EP94105841A EP0622492B1 EP 0622492 B1 EP0622492 B1 EP 0622492B1 EP 94105841 A EP94105841 A EP 94105841A EP 94105841 A EP94105841 A EP 94105841A EP 0622492 B1 EP0622492 B1 EP 0622492B1
Authority
EP
European Patent Office
Prior art keywords
blade
light
web
reflecting layer
arrangement 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
EP94105841A
Other languages
German (de)
English (en)
Other versions
EP0622492A3 (en
EP0622492A2 (fr
Inventor
Martin Dr. Kustermann
Sergio Giuste
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 EP0622492A2 publication Critical patent/EP0622492A2/fr
Publication of EP0622492A3 publication Critical patent/EP0622492A3/de
Application granted granted Critical
Publication of EP0622492B1 publication Critical patent/EP0622492B1/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
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • 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 an arrangement for metering coating slip onto a running web of paper or cardboard.
  • the metering device according to the invention uses a so-called doctor blade in coating systems, this doctor blade can be assigned a feed device for the coating compound directly or at a distance of perhaps 30-50 cm along the circumference of a roller guiding the web of paper or cardboard. It may also be the case that the paper web only runs onto the roller later, so that the bare roller shell is first coated and the coating slip is only transferred later from the roller shell to the paper web.
  • a generic device is known from EP-A 04 26 980.
  • this application e.g. also describes a measuring device with a transmitter which emits light which is emitted by a light-sensitive receiver arrangement, e.g. is registered in the form of a diode array or a CCD camera. The output signal of these arrangements is then processed to adjust the angular position of the blade with respect to the circumference of the roller at the point of contact of the blade thereon. All measuring devices described in this application, despite their miniature design, are still relatively large and have a weight that is not to be neglected.
  • the object of the invention is to provide such a measuring device in which a sensor with a noticeable weight is avoided. Another object is also to design the measuring device in such a way that the blade, including the measured value transmission devices, can be changed quickly.
  • the doctor blade Due to the light-sensitive layer applied to the blade, which sends the light reflected by a transmitter onto this light according to the known law of reflection to a receiver, the doctor blade is only locally loaded by negligible additional weights, and a quick change is possible. If a reflection strip is used, it can be applied to the blade before it is installed. If a mirror plate is used as the reflecting layer of the blade, favorable angles of incidence and reflection of the measuring beams can be achieved by the carrier of the mirror surface being wedge-shaped. The carrier may also be magnetic so that it can be quickly attached to and removed from the blade.
  • a contactless arrangement on an inductive or capacitive or ultrasound basis, the sensor being arranged at a specific distance from the pressure bar or the clamping of the blade, so that, based on the determination of the distance of the blade from the sensor in this area and taking into account the contact pressure of the blade, the angle of the blade can be calculated.
  • the doctor blade 2 is clamped in the jaws 3 and 4 of a holder and is pressed against the counter roller R by means of a pressure bar 5, which is held displaceably between guide plates 23 and 29 according to the double arrow.
  • a transmitter for light in particular laser light 9, is provided, which sends a light beam 12 onto a light reflection layer 8 ', from where the reflected beam 13 reaches the receiver 10 in the form of a CCD arrangement with a spread angle ⁇ .
  • the reflection layer 8 ' here is a mirror layer of a mirror plate 6, which is detachably attached to the coating blade by means of a magnetic carrier plate 7 (since the coating blade is known to consist of magnetizable steel).
  • the carrier plate 7 is wedge-shaped with an angle c in order to obtain a favorable course of the incident beam 12 and the reflection beam 13. This gives you enough space to be able to attach the transmitter 9 and the receiver 10 in the vicinity of the doctor blade in a favorable manner.
  • the reflection layer 8 can also be applied to a film 11 which can be glued to the doctor blade 2 or - designed as a magnetic film - can simply be placed on the doctor blade. You can use a strip of e.g. Use a length of 5 cm and attach it to the right place before installing the doctor blade. This minimizes the downtime of the coating system when changing the coating blade.
  • the signal from the receiver 10 is then sent to a control device, not shown here, in order to be able to adjust the angle of the doctor blade.
  • a control device not shown here
  • the actual coating edge also runs according to this angle the blade end with respect to the counter roller R or the paper web guided by it.
  • the chamfer f should run exactly tangential to the counter roller and paper web.
  • the paper web or roller R runs past the doctor blade at the speed v in accordance with the arrow shown.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (8)

  1. Agencement, permettant l'application d'une masse d'enduction en quantité dosée sur une nappe de papier ou carton en déplacement qui est guidée, notamment par un cylindre (R), de façon à passer dans ou devant l'agencement, dans lequel :
    (a) une lame (2) est appliquée en appui sur la nappe - au moins aussi - au moyen d'une barre de pression (5) ou de plusieurs pièces de pression,
    (b) un émetteur (9) est prévu pour de la lumière - notamment lumière laser,
    (c) la lame (2) comporte, dans la zone située entre la ligne d'appui de la barre de pression (5) ou des multiples pièces de pression sur cette lame (2) et sa ligne d'appui sur la nappe et sur la face de cette lame (2) située à l'opposé de la nappe, au moins une couche de réflexion de lumière (8) servant à réfléchir sur cette couche (8) le rayon lumineux (12) émis par l'émetteur (9),
    (d) un récepteur (10) est prévu pour enregistrer la position ou l'angle du rayon (13) réfléchi vers ce récepteur par la couche de réflexion de lumière (8) de la lame (2) et
    (e) un dispositif de régulation (30) est prévu pour régler, en fonction du signal de position du récepteur (10) correspondant au rayon lumineux réfléchi (13), la position angulaire de la lame (2) dans la zone de cette lame située entre la ligne d'appui de la barre de pression (5) ou de la pièce de pression et la nappe.
  2. Agencement selon la revendication 1, caractérisé en ce que la barre de pression (5) est réalisée flexible en direction de la lame - transversalement vis-à-vis de cet lame.
  3. Agencement selon la revendication 1 ou 2, caractérisé par des dispositifs de réglage qui sont répartis d'une manière uniforme le long de la longueur de la lame et servent au réglage localisé de la pression d'application de la lame (2) au moyen de la barre de pression (5) ou des pièces de pression.
  4. Agencement selon l'une des revendications 1-3, caractérisé en ce que la couche de réflexion de lumière (8) est constituée d'une feuille (11).
  5. Agencement selon l'une des revendications 1-3, caractérisé en ce que la couche de réflexion de lumière (8') est déposée sur des plaquettes magnétiques ou bandes magnétiques servant de support (7) en vue de l'adhérence sur la lame.
  6. Agencement selon la revendication 5, caractérisé en ce que le support magnétique (7) est réalisé en forme de coin, afin de pouvoir régler un angle voulu d'incidence et un angle voulu de réflexion du rayon de lumière émis (12), vis-à-vis du plan qui passe par la lame (2) dans la zone de sa ligne d'appui sur la nappe.
  7. Agencement selon la revendication 6, caractérisé en ce que le support (7) et la couche de réflexion de lumière (8') déposée sur ce support sont réalisés sous forme de plaquettes de miroir en verre (6) d'une taille d'au maximum 25 mm2.
  8. Agencement selon la revendication 3, caractérisé en ce que le poids par unité de surface de la feuille y compris la couche de réflexion de lumière (8) est égal au maximum à 50 g/m2.
EP94105841A 1993-04-28 1994-04-15 Dispositif d'enduction pour une bande en mouvement de papier ou carton Expired - Lifetime EP0622492B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4313889A DE4313889C2 (de) 1993-04-28 1993-04-28 Streicheinrichtung für laufende Bahnen aus Papier oder Karton
DE4313889 1993-04-28

Publications (3)

Publication Number Publication Date
EP0622492A2 EP0622492A2 (fr) 1994-11-02
EP0622492A3 EP0622492A3 (en) 1994-11-17
EP0622492B1 true EP0622492B1 (fr) 1997-01-29

Family

ID=6486581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105841A Expired - Lifetime EP0622492B1 (fr) 1993-04-28 1994-04-15 Dispositif d'enduction pour une bande en mouvement de papier ou carton

Country Status (7)

Country Link
US (1) US5453128A (fr)
EP (1) EP0622492B1 (fr)
JP (1) JPH0731922A (fr)
AT (1) ATE148513T1 (fr)
CA (1) CA2122323A1 (fr)
DE (2) DE4313889C2 (fr)
FI (1) FI107749B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715117A1 (de) * 1997-04-11 1998-10-15 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE19731947A1 (de) * 1997-07-24 1999-01-28 Voith Sulzer Papiermasch Gmbh Verfahren zum Steuern bzw. Regeln einer Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine Gegenfläche
DE19751098C2 (de) * 1997-11-18 2003-02-20 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Verstellen eines langgestreckten, sich in Breitenrichtung einer laufenden Materialbahn erstreckenden Bauteils
ATE361833T1 (de) * 2004-11-30 2007-06-15 Oxy Dry Maschinen Gmbh Verfahren und vorrichtung zur reinigung von zylindern einer druckmaschine
DE102008001265A1 (de) * 2008-04-18 2009-10-22 Voith Patent Gmbh Schabervorrichtung und Rakelvorrichtung
DE102016222203B4 (de) * 2016-11-11 2019-03-14 Koenig & Bauer Ag Rakelvorrichtung und eine Tiefdruckmaschine mit einer Rakelvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2913421C3 (de) * 1979-04-04 1982-04-29 J.M. Voith Gmbh, 7920 Heidenheim Verfahren und Vorrichtung zum Abstreifen von überschüssiger Streichmasse von einer laufenden Bahn
DE3001073B1 (de) * 1980-01-14 1981-06-04 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Aufbringen einer Beschichtung auf eine Materialbahn
DE3236991A1 (de) * 1982-10-06 1984-04-12 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung fuer laufende warenbahnen
CA1313757C (fr) * 1988-04-26 1993-02-23 Mitsubishi Denki Kabushiki Kaisha Methode de mesure de l'epaisseur d'un feuil
JPH0273112A (ja) * 1988-09-07 1990-03-13 Fuji Electric Co Ltd 光電装置
DE3937322A1 (de) * 1989-11-09 1991-05-16 Zanders Feinpapiere Ag Verfahren zum betrieb einer streicheinrichtung
US5338361A (en) * 1991-11-04 1994-08-16 Measurex Corporation Multiple coat measurement and control apparatus and method
US5242498A (en) * 1992-08-04 1993-09-07 The Kohler Coating Machinery Corporation Adjustable blade coater

Also Published As

Publication number Publication date
FI941864A0 (fi) 1994-04-21
US5453128A (en) 1995-09-26
EP0622492A3 (en) 1994-11-17
CA2122323A1 (fr) 1994-10-29
DE4313889A1 (de) 1993-10-21
JPH0731922A (ja) 1995-02-03
FI941864A (fi) 1994-10-29
DE59401676D1 (de) 1997-03-13
ATE148513T1 (de) 1997-02-15
EP0622492A2 (fr) 1994-11-02
DE4313889C2 (de) 1994-08-25
FI107749B (fi) 2001-09-28

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