EP1624106B1 - Coating device - Google Patents

Coating device Download PDF

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Publication number
EP1624106B1
EP1624106B1 EP05105847A EP05105847A EP1624106B1 EP 1624106 B1 EP1624106 B1 EP 1624106B1 EP 05105847 A EP05105847 A EP 05105847A EP 05105847 A EP05105847 A EP 05105847A EP 1624106 B1 EP1624106 B1 EP 1624106B1
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EP
European Patent Office
Prior art keywords
applicator
doctor
loadbearing
frame
loadbearing frame
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.)
Not-in-force
Application number
EP05105847A
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German (de)
French (fr)
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EP1624106A1 (en
Inventor
Joachim Grabscheid
Martin Kustermann
Stefan Reich
Eckard Wozny
Manfred Ueberschär
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP1624106A1 publication Critical patent/EP1624106A1/en
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Publication of EP1624106B1 publication Critical patent/EP1624106B1/en
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    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • 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

Definitions

  • the invention relates to a device for direct or indirect application of a liquid or pasty coating medium on a running paper, cardboard or other Fasterstoffbahn.
  • the fibrous web can also be a textile web.
  • the web can be coated on one side or on both sides.
  • the coating medium can be applied in one or more layers. It may be, for example, a paint, a starch, an impregnating material or others, each in the form of a suspension or dispersion.
  • the essential components of such a device are a counter-roller, a commissioning unit associated therewith for applying the coating medium and a squeegee device.
  • the commissioned work applies coating medium as a flat jet.
  • the beam can be as wide as the web itself. It can also have a slightly smaller width or form the application layer in the form of a large number of individual beams.
  • the squeegee device is connected downstream of the commissioned work. It serves for the uniform and / or the dosage of the applied layer of coating medium.
  • the fibrous web wraps around the counter roll on a portion of its circumference.
  • the medium delivered by the commissioned work passes directly, ie directly onto the web to be crossed.
  • the jet of the coating medium is applied to the lateral surface of the counter-roller, in turn uniformed by the doctor device, and then delivered to the fibrous web, which in turn is brought to the outer surface of the counter-roller.
  • devices with two counter-rollers are known, which form a gap with each other. The fibrous web is passed through this gap, so that the transfer of the layer of coating medium takes place in the region of the nip.
  • the counter-roller is stored in a chair.
  • the chair has two supporting structures, which according to the counter roll between them. Each support structure is thus located in the region of one end face of the counter-roller.
  • the commissioned work and the squeegee device are carried by the chair. Each end of one of these two elements - commissioned work and doctor device - is supported in the associated supporting structure.
  • the two supporting structures are rigidly connected to one another by one or more parts of the frame in order to give the frame the necessary rigidity.
  • Both the commissioned work and the doctor device must be able to be moved away from the counter-roller into a stand-by position, for example for the purpose of cleaning, maintenance or repair. Of course, they also have to be adjustable into an operating position. It depends on various operating parameters. These include the applicator the distance between the applicator nozzle and the lateral surface of the backing roll (indirect application) or the fibrous web (direct application), further the angle formed by the free jet of the coating medium with the lateral surface of the backing roll or the fibrous web at Strahlauferietician , In the doctor device, it depends on the contact pressure, with which the respective doctor element is pressed against the lateral surface of the counter roll or to the web, and also to the angle formed by the doctor element with these two.
  • the two elements-applicator unit and / or squeegee device- may be rotatable or pivotable about an axis parallel to the axis of the counter-roller or otherwise movable relative to the counter-roller.
  • a squeegee device is any kind of device into consideration, for example, a device with a doctor blade, an air knife, a doctor bar or a rotary squeegee.
  • the stroke must have a certain thickness.
  • the thickness profile across the web width must be highly uniform.
  • the quality of the stroke surface can play a role.
  • These functional elements have an elongated shape. Depending on the web width, they can be between 1 and 11 m long. Because of the above suspension in the frame - on the two lateral supporting structures - a slack due to the weight of the functional element concerned can not be avoided. Without further measures, this would mean that the parameters mentioned assume different values across the web width. The distance between the nozzle of the commissioned work and impact point of the free jet would thus be greater in the middle of the web, as at the web edges. The contact pressure of the doctor element of the doctor device would be smaller in the middle of the web than at the web edges.
  • Measures have been taken to reduce these harmful effects. These consist in that one dimensioned the associated support beams of commissioned work and doctor device according to increase their moment of resistance. In addition, one tries to compensate for the disadvantages by a corresponding shaping of the respective elements, for example, characterized in that the nozzle of the commissioned work and the doctor element of the doctor device - seen in plan view - have a belly.
  • the invention has for its object to make a device according to the preamble of claim 1 such that the quality requirements of the coated fibrous web are fully met.
  • the device should be of simple, inexpensive and robust construction.
  • the masses of commissioned and squeegee device should be as small as possible, accessibility for the purpose of monitoring the functions, cleaning, maintenance and repair should be improved.
  • the core idea of the invention is that the applicator and / or the doctor device with a sliding or rolling guide along the support frame are displaced
  • the support frame is a component of considerable stability. It represents a reliable, positive guidance of the commissioned work and / or the squeegee device, so that the distance to the fibrous web to be coated over the entire displacement is reliably maintained.
  • FIG. 1 can be seen a counter-roller 1. This is rotatably mounted about a rotation axis 1.1. The bearings are not shown here in lateral support structures - one at each end face of the backing roll. 1
  • the counter roll 1 is looped by a fibrous web 2 on a part of its peripheral surface.
  • a Fung part 3 is designed as a hollow construction. It connects the two mentioned lateral support structures together and establishes a rigid connection to these two.
  • the stiffening part 3 carries two functional units, namely a commissioned work 4 and a doctor device 5.
  • the commissioned work has a applicator body 4.1.
  • a free jet 4.2 or spray jets directed against the fibrous web 2 in operation.
  • the commissioned work 4 is mounted by means of a sliding or rolling guide 4.3 on a vertical wall 3.1, the framing part 3 and according to the vertically displaceable - see double arrow 4.4.
  • the application body 4.1 is further pivotable about a rotation axis 4.5. In this way, the distance between the application body 4.1 and the fibrous web 2 can be changed, likewise the angle of the free jet 4.2 or the spray jets.
  • the doctor device 5 has a doctor body 5.1, which carries a doctor blade 5.2.
  • the doctor device 5 is in turn displaceable by means of a sliding guide 5.3 along an inclined wall 3.2 of the Fung part 3. See double arrow 5.4.
  • Of the Doctor body 5.1 is pivotable about a rotation axis 5.5. In this way, the squeegee device 5 - equal to the commissioned work 4 - proceed in the direction of the backing roll 1, ie depart from this or hire against them. Thus, the contact pressure and the angle of the doctor blade 2 can be changed.
  • the embodiment according to FIG. 2 has substantially all the features of that according to FIG. 1 on.
  • the Fung part 3 has no closed profile, but is open against the counter roll 1 out. It is also walkable. Furthermore, it has a channel 3.3 for guiding supply lines and a channel 3.4 for catching rubbed-off coating color.
  • the functional units 4 and 5 are in turn displaceable or pivotable, as in the embodiment according to FIG. 1 , Likewise, the counter roll 1 can be moved to a standby position.
  • the commissioned work and doctor device can be designed solely on the basis of the functions to be performed by them.
  • the flexural rigidity does not matter because the functional units are supported on the stiffening part, either throughout their entire lengths, or at several points of their lengths.
  • the necessary translational movements in the radial direction towards the counter roll - contact pressure, service position - and the pivoting movements with regard to the blade angle, the beam angle and the service position remain unaffected and can be realized properly.
  • the stool part could be made wholly or partially movable, but at least the walls or parts of the walls which carry the functional units 4 and 5.
  • the fibrous web 2 wraps around the counter roll 1.
  • the devices shown can also be used for the indirect application of a coating medium.
  • the free jet 4.2 from the application body 4.1 is not applied to the fibrous web 2, but onto the lateral surface of the counter roll 1.
  • the layer which deposits thereon is subjected to the doctoring process and transferred at a different point on the circumference of the counter roll 1 onto a fibrous web 2.
  • the device shown comprises a counter-roller 1 with an axis of rotation 1.1.
  • the mating roll is also wrapped around a part of its circumference of a fibrous web 2.
  • a stiffening part 3 has a vertical surface 3.1 and a horizontal surface 3.2.
  • the commissioned work 4 comprises a coating body 4.1, with a nozzle which occupies a certain distance to the fibrous web 2.
  • a continuous flat jet 4.2 or a plurality of spray jets of the application medium emerge and reach the fibrous web surface.
  • the application body 4.1 is supported by a support beam 4.6. This is cylindrical in the present case.
  • the support beam 4.6 is in turn rotatably mounted in bearing blocks 4.7.
  • the bearing blocks 4.7 are movable in a sliding guide 4.3 along the vertical surface 3.1 by means of a pneumatic unit 4.8.
  • the distance between the nozzle of the nozzle body 4.1 and the fibrous web 2 can be adjusted.
  • the adjustment drive 4.9 can be used to change the direction of the application medium 4.2 emerging from the nozzle or a large number of individual nozzles by turning the support beam 4.6.
  • the conditions in the doctor device 5 are analogous to those of the commissioned work 4.
  • a doctor body 5.1 with doctor blade 5.2 is supported by a support beam 5.6.
  • the support beam is in turn stored in bearing blocks 5.7.
  • the bearing blocks are movable in a sliding guide 5.3.
  • a pneumatic unit 5.8 allows a horizontal approach and retraction of the doctor device 5 relative to the counter cylinder 1.
  • An adjusting 5.9 allows a rotation of the support roller 5.6 and thus the angle between the blade 5.2 and fibrous web. 2

Abstract

An assembly applies a liquid or paste coating to a moving paper web as it passes around a revolving drum. The assembly has an application station (4) followed by a doctor blade (5), and a base frame with side-arms supporting the drum. The applicator and/or doctor blades are supported by the base frame (3) over part or all of their entire length. The applicator and doctor blade rest on a single part of the base frame. The base frame is hollow and open towards the drum. The base frame is capable of safely supporting a person.

Description

Die Erfindung betrifft eine Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Papier-, Karton- oder andere Fasterstoffbahn.The invention relates to a device for direct or indirect application of a liquid or pasty coating medium on a running paper, cardboard or other Fasterstoffbahn.

Bei der Faserstoffbahn kann es sich aber auch um eine textile Bahn handeln, Die Bahn kann dabei einseitig oder beidseitig beschichtet werden. Das Streichmedium kann in einer oder mehreren Schichten aufgetragen werden. Es kann beispielsweise eine Farbe sein, eine Stärke, ein Imprägniermaterial oder anderes, jeweils in Gestalt einer Suspension oder Dispersion.However, the fibrous web can also be a textile web. The web can be coated on one side or on both sides. The coating medium can be applied in one or more layers. It may be, for example, a paint, a starch, an impregnating material or others, each in the form of a suspension or dispersion.

Es gibt zahlreiche Ausführungsformen solcher Streichvorrichtungen. Nur beispielsweise wird verwiesen auf DE 196 49 559 A1 , DE 44 32 179 C1 , US-A-6 053 979 , EP-A-0 781 608 .There are numerous embodiments of such coating devices. For example, reference is made to DE 196 49 559 A1 . DE 44 32 179 C1 . US-A-6 053 979 . EP-A-0 781 608 ,

Die wesentlichen Bauteile einer solchen Vorrichtung sind eine Gegenwalze, ein dieser zugeordnetes Auftragswerk zum Auftragen des Streichmediums sowie eine Rakeleinrichtung. Das Auftragswerk trägt Streichmedium als flachen Strahl auf. Der Strahl kann so breit sein, wie die Bahn selbst. Er kann auch eine etwas geringere Breite haben oder in form einer Vielzahl von Einzelstrahlen die Auftragsschicht bilden. Die Rakeleinrichtung ist dem Auftragswerk nachgeschaltet. Sie dient dem Vergleichmäßigen und/oder der Dosierung der aufgetragenen Schicht aus Streichmedium.The essential components of such a device are a counter-roller, a commissioning unit associated therewith for applying the coating medium and a squeegee device. The commissioned work applies coating medium as a flat jet. The beam can be as wide as the web itself. It can also have a slightly smaller width or form the application layer in the form of a large number of individual beams. The squeegee device is connected downstream of the commissioned work. It serves for the uniform and / or the dosage of the applied layer of coating medium.

Bei dem direkten Auftragsverfahren umschlingt die Faserstoffbahn die Gegenwalze auf einem Teil von deren Umfang. Das vom Auftragswerk abgegebene Medium gelangt dabei unmittelbar, also direkt auf die zu streichende Bahn. Beim indirekten Auftragsverfahren hingegen wird der Strahl des Streichmediums auf die Mantelfläche der Gegenwalze aufgebracht, wiederum vergleichmäßigt durch die Rakeleinrichtung, und anschließend an die Faserstoffbahn abgegeben, die ihrerseits an die Mantelfläche der Gegenwalze herangeführt wird. Auch sind Vorrichtungen mit zwei Gegenwalzen bekannt, die miteinander einen Spalt bilden. Die Faserstoffbahn wird durch diesen Spalt hindurchgeführt, so dass die Übertragung der Schicht aus Streichmedium im Bereich des Walzenspaltes stattfindet.In the direct application process, the fibrous web wraps around the counter roll on a portion of its circumference. The medium delivered by the commissioned work passes directly, ie directly onto the web to be crossed. In the indirect application method, however, the jet of the coating medium is applied to the lateral surface of the counter-roller, in turn uniformed by the doctor device, and then delivered to the fibrous web, which in turn is brought to the outer surface of the counter-roller. Also devices with two counter-rollers are known, which form a gap with each other. The fibrous web is passed through this gap, so that the transfer of the layer of coating medium takes place in the region of the nip.

Die Gegenwalze ist in einer Stuhlung gelagert. Die Stuhlung weist zwei Tragkonstruktionen auf, die dem gemäß die Gegenwalze zwischen sich einschließen. Jede Tragkonstruktion befindet sich somit im Bereich einer Stirnseite der Gegenwalze.The counter-roller is stored in a chair. The chair has two supporting structures, which according to the counter roll between them. Each support structure is thus located in the region of one end face of the counter-roller.

Auch das Auftragswerk und die Rakeleinrichtung sind von der Stuhlung getragen. Jedes Ende einer dieser beiden Elemente - Auftragswerk und Rakeleinrichtung - stützt sich in der zugehörenden Tragkonstruktion ab.Also the commissioned work and the squeegee device are carried by the chair. Each end of one of these two elements - commissioned work and doctor device - is supported in the associated supporting structure.

Die beiden Tragkonstruktionen sind durch eine oder mehrere Stuhlungsteile starr miteinander verbunden, um der Stuhlung die notwendige Steifigkeit zu verleihen.The two supporting structures are rigidly connected to one another by one or more parts of the frame in order to give the frame the necessary rigidity.

Sowohl das Auftragswerk als auch die Rakeleinrichtung müssen von der Gegenwalze in eine Bereitschaftsposition abfahrbar sein, beispielsweise zum Zwecke der Reinigung, der Wartung oder der Reparatur. Sie müssen natürlich auch jeweils in eine Betriebsposition anstellbar sein. Dabei kommt es auf verschiedene Betriebsparameter an. Hierzu gehören beim Auftragswerk der Abstand zwischen der Auftragsdüse und der Mantelfläche der Gegenwalze (beim indirekten Auftrag) bzw. der Faserstoffbahn (beim direkten Auftrag), ferner der Winkel, den der Freistrahl des Auftragsmediums mit der Mantelfläche der Gegenwalze bzw. der Faserstoffbahn am Strahlauftreffpunkt bildet. Bei der Rakeleinrichtung kommt es auf die Anpresskraft an, mit welcher das betreffende Rakelelement an die Mantelfläche der Gegenwalze bzw. an die Bahn angepresst wird, ferner auf den Winkel, den das Rakelelement mit diesen beiden bildet. Zum Einstellen der genannten Parameter können die beiden Elemente - Auftragswerk und/oder Rakeleinrichtung - um eine zur Achse der Gegenwalze parallele Achse verdrehbar oder verschwenkbar oder sonst wie relativ zur Gegenwalze verfahrbar sein.Both the commissioned work and the doctor device must be able to be moved away from the counter-roller into a stand-by position, for example for the purpose of cleaning, maintenance or repair. Of course, they also have to be adjustable into an operating position. It depends on various operating parameters. These include the applicator the distance between the applicator nozzle and the lateral surface of the backing roll (indirect application) or the fibrous web (direct application), further the angle formed by the free jet of the coating medium with the lateral surface of the backing roll or the fibrous web at Strahlauftreffpunkt , In the doctor device, it depends on the contact pressure, with which the respective doctor element is pressed against the lateral surface of the counter roll or to the web, and also to the angle formed by the doctor element with these two. To set the parameters mentioned, the two elements-applicator unit and / or squeegee device-may be rotatable or pivotable about an axis parallel to the axis of the counter-roller or otherwise movable relative to the counter-roller.

Als Rakeleinrichtung kommt jegliche Art von Einrichtung in Betracht, beispielsweise eine Einrichtung mit einer Rakelklinge, einem Luftmesser, einer Rakelleiste oder einem drehbaren Rakelstab.As a squeegee device is any kind of device into consideration, for example, a device with a doctor blade, an air knife, a doctor bar or a rotary squeegee.

An die gestrichene Faserstoffbahn werden hohe Qualitätsanforderungen gestellt. So muss der Strich eine bestimmte Dicke aufweisen. Das Dickenprofil über die Bahnbreite muss in hohem Maße gleichmäßig sein. Die Qualität der Strich-Oberfläche kann eine Rolle spielen.High quality requirements are placed on the coated fibrous web. So the stroke must have a certain thickness. The thickness profile across the web width must be highly uniform. The quality of the stroke surface can play a role.

Alle diese Qualitätskriterien werden durch die genannten Parameter bestimmt, somit durch die einwandfreie Arbeitsweise und vielseitige Verstellbarkeit der beiden Funktionselemente Auftragswerk und Rakeleinrichtung.All these quality criteria are determined by the mentioned parameters, thus by the flawless operation and versatile adjustability of the two functional elements coater and squeegee device.

Diese Funktionselemente haben eine langgestreckte Gestalt. Je nach Bahnbreite können sie zwischen 1 und 11 m lang sein. Wegen der genannten Aufhängung in der Stuhlung - an den beiden seitlichen Tragkonstruktionen - lässt sich ein Durchhang aufgrund des Eigengewichtes des betreffenden Funktionselementes nicht vermeiden. Ohne weitere Maßnahmen würde dies dazu führen, dass die genannten Parameter über die Bahnbreite unterschiedliche Werte annehmen. Der Abstand zwischen Düse des Auftragswerkes und Auftreffpunkt des Freistrahles wäre somit in der Bahnmitte größer, als an den Bahnrändern. Der Anpressdruck des Rakelelementes der Rakeleinrichtung wäre in der Bahnmitte kleiner, als an den Bahnrändern.These functional elements have an elongated shape. Depending on the web width, they can be between 1 and 11 m long. Because of the above suspension in the frame - on the two lateral supporting structures - a slack due to the weight of the functional element concerned can not be avoided. Without further measures, this would mean that the parameters mentioned assume different values across the web width. The distance between the nozzle of the commissioned work and impact point of the free jet would thus be greater in the middle of the web, as at the web edges. The contact pressure of the doctor element of the doctor device would be smaller in the middle of the web than at the web edges.

Man hat Maßnahmen getroffen, um diese schädlichen Einflüsse zu verringern. Diese bestehen darin, dass man die zugehörenden Tragbalken von Auftragswerk und Rakeleinrichtung entsprechend dimensioniert, um deren Widerstandsmoment zu vergrößern. Außerdem versucht man die Nachteile durch eine entsprechende Formgebung der betreffenden Elemente zu kompensieren, beispielsweise dadurch, dass die Düse des Auftragswerkes sowie das Rakelelement der Rakeleinrichtung - in Draufsicht gesehen - einen Bauch haben.Measures have been taken to reduce these harmful effects. These consist in that one dimensioned the associated support beams of commissioned work and doctor device according to increase their moment of resistance. In addition, one tries to compensate for the disadvantages by a corresponding shaping of the respective elements, for example, characterized in that the nozzle of the commissioned work and the doctor element of the doctor device - seen in plan view - have a belly.

Alle diese Maßnahmen haben sich jedoch als unzulänglich erwiesen.However, all these measures have proven to be inadequate.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 derart zu gestalten, dass die Qualitätsanforderungen an die gestrichene Faserstoffbahn voll und ganz erfüllt werden. Außerdem soll die Vorrichtung von einfachem, kostengünstigem und robustem Aufbau sein. Die Massen von Auftragswerk und Rakeleinrichtung sollen möglichst klein sein, Die Zugänglichkeit zum Zwecke der Überwachung der Funktionen, der Reinigung, der Wartung und der Reparatur soll verbessert werden.The invention has for its object to make a device according to the preamble of claim 1 such that the quality requirements of the coated fibrous web are fully met. In addition, the device should be of simple, inexpensive and robust construction. The masses of commissioned and squeegee device should be as small as possible, accessibility for the purpose of monitoring the functions, cleaning, maintenance and repair should be improved.

Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst.This object is solved by the features of claim 1.

Der Kerngedanke der Erfindung besteht darin, dass das Auftragswerk und/oder die Rakeleinrichtung mit einer Gleit- oder Rollführung entlang des Tragrahmens verschiebbar sindThe core idea of the invention is that the applicator and / or the doctor device with a sliding or rolling guide along the support frame are displaced

Aufgrund einer solchen Gestaltung wird im Einzelnen Folgendes erreicht:Due to such a design, the following is achieved in detail:

Der Tragrahmen ist ein Bauteil von erheblicher Stabilität. Er stellt eine zuverlässige, positive Führung des Auftragswerkes und/oder der Rakeleinrichtung dar, so dass der Abstand zu der zubeschichtenden Faserstoffbahn über den gesamten Verschiebeweg zuverlässig eingehalten wird.The support frame is a component of considerable stability. It represents a reliable, positive guidance of the commissioned work and / or the squeegee device, so that the distance to the fibrous web to be coated over the entire displacement is reliably maintained.

Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im Einzelnen folgendes dargestellt:

Figur 1
zeigt eine erste Ausführungsform mit einem Stuhlungsteil mit geschlossenem Kastenprofil.
Figur 2
zeigt eine zweite Ausführungsform mit einem offenen, begehbaren Stuhlungsteil.
Figur 3
zeigt eine dritte Ausführungsform auf einem Stuhlungsteil vertikal verschiebbarem Auftragswerk und einer auf demselben Stuhlungsteil horizontal verschiebbarer Rakeleinrichtung.
The invention is explained in more detail with reference to the drawing. The following is shown in detail:
FIG. 1
shows a first embodiment with a stool with closed box section.
FIG. 2
shows a second embodiment with an open, walk-on stool.
FIG. 3
shows a third embodiment on a chair part vertically displaceable applicator and a horizontally displaceable on the same chair part doctor device.

In Figur 1 erkennt man eine Gegenwalze 1. Diese ist um eine Drehachse 1.1 drehbar gelagert. Die Lager befinden sich in hier nicht dargestellten seitlichen Tragkonstruktionen - jeweils eine an jeder Stirnseite der Gegenwalze 1.In FIG. 1 can be seen a counter-roller 1. This is rotatably mounted about a rotation axis 1.1. The bearings are not shown here in lateral support structures - one at each end face of the backing roll. 1

Die Gegenwalze 1 ist von einer Faserstoffbahn 2 auf einem Teil ihrer Umfangsfläche umschlungen.The counter roll 1 is looped by a fibrous web 2 on a part of its peripheral surface.

Ein Stuhlungsteil 3 ist als Hohlkonstruktion ausgeführt. Sie verbindet die beiden genannten seitlichen Tragkonstruktionen miteinander und stellt eine starre Verbindung zu diesen beiden her. Das Stuhlungsteil 3 trägt zwei Funktionseinheiten, nämlich ein Auftragswerk 4 und eine Rakeleinrichtung 5. Das Auftragswerk weist einen Auftragskörper 4.1 auf. Aus diesem wird im Betrieb ein Freistrahl 4.2 oder Sprühstrahlen gegen die Faserstoffbahn 2 gerichtet. Das Auftragswerk 4 ist mittels einer Gleit- oder Rollführung 4.3 an einer vertikalen Wand 3.1 das Stuhlungsteil 3 gelagert und dem gemäß vertikal verschiebbar - siehe Doppelpfeil 4.4. Der Auftragskörper 4.1 ist ferner um eine Drehachse 4.5 verschwenkbar. Auf diese Weise lässt sich der Abstand zwischen dem Auftragskörper 4.1 und der Faserstoffbahn 2 verändern, desgleichen der Winkel des Freistrahls 4.2 bzw. der Sprühstrahlen.A Fung part 3 is designed as a hollow construction. It connects the two mentioned lateral support structures together and establishes a rigid connection to these two. The stiffening part 3 carries two functional units, namely a commissioned work 4 and a doctor device 5. The commissioned work has a applicator body 4.1. For this purpose, a free jet 4.2 or spray jets directed against the fibrous web 2 in operation. The commissioned work 4 is mounted by means of a sliding or rolling guide 4.3 on a vertical wall 3.1, the framing part 3 and according to the vertically displaceable - see double arrow 4.4. The application body 4.1 is further pivotable about a rotation axis 4.5. In this way, the distance between the application body 4.1 and the fibrous web 2 can be changed, likewise the angle of the free jet 4.2 or the spray jets.

Die Rakeleinrichtung 5 weist einen Rakelkörper 5.1 auf, der eine Rakelklinge 5.2 trägt. Die Rakeleinrichtung 5 ist wiederum mittels einer Gleitführung 5.3 entlang einer geneigten Wand 3.2 des Stuhlungsteiles 3 verschiebbar. Siehe Doppelpfeil 5.4. Der Rakelkörper 5.1 ist um eine Drehachse 5.5 verschwenkbar. Auf diese Weise lässt sich die Rakeleinrichtung 5 - gleich dem Auftragswerk 4 - in Richtung auf die Gegenwalze 1 verfahren, d. h. von dieser abfahren oder gegen diese anstellen. Damit lassen sich auch der Anpressdruck sowie der Winkel der Rakelklinge 2 verändern.The doctor device 5 has a doctor body 5.1, which carries a doctor blade 5.2. The doctor device 5 is in turn displaceable by means of a sliding guide 5.3 along an inclined wall 3.2 of the Fung part 3. See double arrow 5.4. Of the Doctor body 5.1 is pivotable about a rotation axis 5.5. In this way, the squeegee device 5 - equal to the commissioned work 4 - proceed in the direction of the backing roll 1, ie depart from this or hire against them. Thus, the contact pressure and the angle of the doctor blade 2 can be changed.

Es ist auch denkbar, die Gegenwalze 1 senkrecht zu ihrer Drehachse 1.1 zu verfahren, und zwar aus der hier gezeigten Betriebsposition in eine Bereitschaftsposition.It is also conceivable to move the counter roller 1 perpendicular to its axis of rotation 1.1, and indeed from the operating position shown here to a standby position.

Die Ausführungsform gemäß Figur 2 weist im Wesentlichen alle Merkmale von jener gemäß Figur 1 auf. Jedoch hat das Stuhlungsteil 3 kein geschlossenes Profil, sondern ist gegen die Gegenwalze 1 hin offen. Sie ist außerdem begehbar. Weiterhin weist sie einen Kanal 3.3 zur Führung von Versorgungsleitungen sowie eine Rinne 3.4 zum Auffangen abgerakelter Streichfarbe auf.The embodiment according to FIG. 2 has substantially all the features of that according to FIG. 1 on. However, the Fung part 3 has no closed profile, but is open against the counter roll 1 out. It is also walkable. Furthermore, it has a channel 3.3 for guiding supply lines and a channel 3.4 for catching rubbed-off coating color.

Die Funktionseinheiten 4 und 5 sind wiederum verschiebbar bzw. verschwenkbar, so wie bei der Ausführungsform gemäß Figur 1. Desgleichen lässt sich die Gegenwalze 1 in eine Bereitschaftsposition verfahren.The functional units 4 and 5 are in turn displaceable or pivotable, as in the embodiment according to FIG FIG. 1 , Likewise, the counter roll 1 can be moved to a standby position.

Beide Ausführungsformen machen sich die Vorteile der Erfindung zunutze. So können Auftragswerk und Rakeleinrichtung allein unter dem Gesichtspunkt der von ihnen zu erfüllenden Funktionen gestaltet werden. Die Biegesteifigkeit spielt keine Rolle, da sich die Funktionseinheiten auf dem Stuhlungsteil abstützen, entweder durchgehend auf ihren gesamten Längen, oder an mehreren Stellen ihrer Längen. Die notwendigen translatorischen Bewegungen in radialer Richtung zur Gegenwalze hin - Anpressung, Serviceposition - sowie die Schwenkbewegungen im Hinblick auf den Klingenwinkel, den Strahlwinkel und die Serviceposition bleiben unberührt und lassen sich einwandfrei verwirklichen.Both embodiments take advantage of the advantages of the invention. Thus, the commissioned work and doctor device can be designed solely on the basis of the functions to be performed by them. The flexural rigidity does not matter because the functional units are supported on the stiffening part, either throughout their entire lengths, or at several points of their lengths. The necessary translational movements in the radial direction towards the counter roll - contact pressure, service position - and the pivoting movements with regard to the blade angle, the beam angle and the service position remain unaffected and can be realized properly.

Die sonst notwendige Aufhängung der Funktionseinheiten an ihren beiden Enden an den seitlichen Tragkonstruktionen entfällt, was eine weitere Einsparung bedeutet.The otherwise necessary suspension of the functional units at its two ends on the lateral support structures deleted, which means a further saving.

Statt die Gegenwalze 1 zwischen einer Betriebsposition und einer Bereitschaftsposition zu verfahren, könnte auch das Stuhlungsteil ganz oder teilweise verfahrbar gemacht werden, wenigstens aber deren Wände oder Teile der Wände, welche die Funktionseinheiten 4 und 5 tragen.Instead of the counter roller 1 to move between an operating position and a standby position, and the stool part could be made wholly or partially movable, but at least the walls or parts of the walls which carry the functional units 4 and 5.

In den beiden Figuren umschlingt die Faserstoffbahn 2 die Gegenwalze 1. Jedoch lassen sich die dargestellten Vorrichtungen auch zum indirekten Auftragen eines Streichmediums verwenden. Dabei wird der Freistrahl 4.2 aus dem Auftragskörper 4.1 nicht auf die Faserstoffbahn 2 aufgebracht, sondern auf die Mantelfläche der Gegenwalze 1. Die sich darauf niederschlagende Schicht wird dem Rakelvorgang unterworfen und an einer anderen Stelle des Umfanges von der Gegenwalze 1 auf eine Faserstoffbahn 2 übertragen.In the two figures, the fibrous web 2 wraps around the counter roll 1. However, the devices shown can also be used for the indirect application of a coating medium. The free jet 4.2 from the application body 4.1 is not applied to the fibrous web 2, but onto the lateral surface of the counter roll 1. The layer which deposits thereon is subjected to the doctoring process and transferred at a different point on the circumference of the counter roll 1 onto a fibrous web 2.

Die in Figur 3 dargestellte Vorrichtung umfasst wiederum eine Gegenwalze 1 mit Drehachse 1.1. Die Gegenwalze ist auch einem Teil ihres Umfanges von einer Faserstoffbahn 2 umschlungen. Ein Stuhlungsteil 3 weist eine vertikale Fläche 3.1 und eine horizontale Fläche 3.2 auf.In the FIG. 3 In turn, the device shown comprises a counter-roller 1 with an axis of rotation 1.1. The mating roll is also wrapped around a part of its circumference of a fibrous web 2. A stiffening part 3 has a vertical surface 3.1 and a horizontal surface 3.2.

An der vertikalen Fläche 3.1 ist ein Auftragswerk 4 gelagert, und an der horizontalen Fläche 3.2 eine Rakeleinrichtung 5.On the vertical surface 3.1 a commissioned work 4 is mounted, and on the horizontal surface 3.2 a doctor device. 5

Das Auftragswerk 4 umfasst einen Auftragskörper 4.1, mit einer Düse, die zur Faserstoffbahn 2 einen gewissen Abstand einnimmt. Ein durchgängiger Flachstrahl 4.2 oder eine Vielzahl von Sprühstrahlen des Auftragsmediums treten aus und gelangen auf die Faserstoffbahnoberfläche. Der Auftragskörper 4.1 ist von einem Tragbalken 4.6 getragen. Dieser ist im vorliegenden Falle zylindrisch.The commissioned work 4 comprises a coating body 4.1, with a nozzle which occupies a certain distance to the fibrous web 2. A continuous flat jet 4.2 or a plurality of spray jets of the application medium emerge and reach the fibrous web surface. The application body 4.1 is supported by a support beam 4.6. This is cylindrical in the present case.

Der Tragbalken 4.6 ist seinerseits in Lagerböcken 4.7 drehbar gelagert. Die Lagerböcke 4.7 sind in einer Gleitführung 4.3 entlang der vertikalen Fläche 3.1 verfahrbar mittels einer pneumatischen Einheit 4.8.The support beam 4.6 is in turn rotatably mounted in bearing blocks 4.7. The bearing blocks 4.7 are movable in a sliding guide 4.3 along the vertical surface 3.1 by means of a pneumatic unit 4.8.

Man erkennt ferner einen Verstellantrieb 4.9 zum Verdrehen des Tragbalkens 4.6 in Richtung des Doppelpfeiles 4.4.It also recognizes an adjusting 4.9 for rotating the support beam 4.6 in the direction of the double arrow 4.4.

Mit der pneumatischen Einheit 4.8 lässt sich der Abstand zwischen der Düse des Düsenkörpers 4.1 und der Faserstoffbahn 2 verstellen. Mit dem Verstellantrieb 4.9 hingegen lässt sich die Richtung des aus der Düse oder einer Vielzahl von Einzeldüsen austretenden Auftragsmediums 4.2 durch Verdrehen des Tragbalkens 4.6 verändern.With the pneumatic unit 4.8, the distance between the nozzle of the nozzle body 4.1 and the fibrous web 2 can be adjusted. By contrast, the adjustment drive 4.9 can be used to change the direction of the application medium 4.2 emerging from the nozzle or a large number of individual nozzles by turning the support beam 4.6.

Die Verhältnisse bei der Rakeleinrichtung 5 sind analog zu jenen des Auftragswerkes 4. Ein Rakelkörper 5.1 mit Rakelklinge 5.2 ist von einem Tragbalken 5.6 getragen. Der Tragbalken ist seinerseits wiederum in Lagerböcken 5.7 gelagert. Die Lagerböcke sind in einer Gleitführung 5.3 verfahrbar. Eine pneumatische Einheit 5.8 erlaubt ein horizontales An- und Abfahren der Rakeleinrichtung 5 relativ zum Gegenzylinder 1. Ein Verstellantrieb 5.9 ermöglicht ein Verdrehen der Tragwalze 5.6 und damit des Winkels zwischen Klinge 5.2 und Faserstoffbahn 2.The conditions in the doctor device 5 are analogous to those of the commissioned work 4. A doctor body 5.1 with doctor blade 5.2 is supported by a support beam 5.6. The support beam is in turn stored in bearing blocks 5.7. The bearing blocks are movable in a sliding guide 5.3. A pneumatic unit 5.8 allows a horizontal approach and retraction of the doctor device 5 relative to the counter cylinder 1. An adjusting 5.9 allows a rotation of the support roller 5.6 and thus the angle between the blade 5.2 and fibrous web. 2

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Gegenwalzebacking roll
1.11.1
Drehachse der GegenwalzeRotary axis of the counter roll
22
FaserstoffbahnFibrous web
33
StuhlungsteilStuhlungsteil
3.13.1
vertikale Wandvertical wall
3.23.2
geneigte Wandinclined wall
3.33.3
Kanal für VersorgungsleitungenChannel for supply lines
3.43.4
Rinnegutter
44
Auftragswerkcommissioned
4.14.1
Auftragskörperorder body
4.24.2
Freistrahlfree jet
4.34.3
Gleitführungslide
4.44.4
Doppelpfeildouble arrow
4.54.5
Drehachseaxis of rotation
4.64.6
Tragbalkenstringers
4.74.7
Lagerbockbearing block
4.84.8
Pneumatische EinheitPneumatic unit
4.94.9
Verstellantriebadjustment
55
Rakeleinrichtungdoctor device
5.15.1
Rakelkörpersqueegee body
5.25.2
Rakelklingedoctor blade
5.35.3
Gleitführungslide
5.45.4
Doppelpfeildouble arrow
5.55.5
Drehachseaxis of rotation
5.65.6
Tragbalkenstringers
5.75.7
Lagerbockbearing block
5.85.8
Pneumatische EinheitPneumatic unit
5.95.9
Verstellantriebadjustment

Claims (8)

  1. Device for applying liquid or pasty coating medium to a moving paper, board or other fibrous web (2), having
    a backing roll (1);
    an applicator (4) for applying coating medium;
    a doctor device (5), which is connected after the applicator (4); and
    two lateral loadbearing structures for mounting the backing roll (1);
    the applicator (4) and/or the doctor device (5) are borne over their entire length or over part of their length by a stationary loadbearing frame (3);
    characterized in that the applicator (4) and/or the doctor device (5) can be displaced along the loadbearing frame (3) with a sliding or rolling guide (4.3).
  2. Device according to Claim 1, characterized in that the applicator (4) and/or the doctor device (5) can be displaced along one wall (3.1, 3.2) of the loadbearing frame (3) with the sliding or rolling guide (4.3).
  3. Device according to Claim 1 or 2, characterized in that the loadbearing frame (3) is constructed as a hollow profile.
  4. Device according to Claim 3, characterized in that the loadbearing frame (3) is open towards the backing roll (1).
  5. Device according to one of Claims 1 to 4, characterized in that the loadbearing frame (3) can be entered on foot.
  6. Device according to one of Claims 1 to 5, characterized in that the applicator (4) and the doctor device (5) are in each case mounted on walls (3.1) and (3.2), respectively, of the loadbearing frame (3), which extend at least approximately in the direction of a radius of the backing roll (1).
  7. Device according to one of Claims 1 to 6, characterized in that the applicator (4) and/or the doctor device (5) are mounted over their length at a plurality of uniformly distributed points on the loadbearing frame (3).
  8. Device according to one of Claims 1 to 7, characterized in that the applicator (4) and/or the doctor device (5) are mounted only in the region of the operator's side and the drive side of the device.
EP05105847A 2004-08-03 2005-06-30 Coating device Not-in-force EP1624106B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004037532A DE102004037532A1 (en) 2004-08-03 2004-08-03 applicator

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EP1624106A1 EP1624106A1 (en) 2006-02-08
EP1624106B1 true EP1624106B1 (en) 2008-09-03

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ID=35124309

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EP (1) EP1624106B1 (en)
AT (1) ATE407259T1 (en)
DE (2) DE102004037532A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109549B4 (en) 2017-05-04 2021-07-29 Voith Patent Gmbh Coating device for treating a fibrous web
CN109700067A (en) * 2018-12-11 2019-05-03 中国船舶工业总公司七一五研究所宜昌分部 A kind of thick slurry thin slice production molding machine and operating method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2228685C3 (en) * 1972-06-13 1978-04-06 Escher Wyss Gmbh, 7980 Ravensburg Coating device
DE3908386A1 (en) * 1989-03-15 1990-09-27 Jagenberg Ag METHOD AND DEVICE FOR COATING MATERIAL SHEETS, ESPECIALLY PAPER OR CARDBOARD SHEETS
DE4014647C2 (en) * 1990-05-08 1995-03-30 Voith Gmbh J M Device for applying a coating to a running web
FI91367C (en) * 1990-12-13 1994-06-27 Valmet Paper Machinery Inc Bending compensated blade beam
DE9207551U1 (en) * 1992-06-04 1992-08-27 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4341341C1 (en) * 1993-12-06 1995-03-09 Jagenberg Ag Metering system for devices for coating material webs, in particular paper or board webs
ATE210223T1 (en) * 1995-07-29 2001-12-15 Jagenberg Papiertech Gmbh APPLICATION SYSTEM FOR A DEVICE FOR COATING A PAPER OR CARDBOARD WEB
FI105167B (en) * 1995-12-28 2000-06-30 Valmet Corp Applicator for applying a coating agent to a moving substrate
DE19649559A1 (en) * 1996-11-29 1998-06-04 Voith Sulzer Papiermasch Gmbh Device for the direct or indirect application of a liquid or pasty coating medium to a running material web

Also Published As

Publication number Publication date
ATE407259T1 (en) 2008-09-15
EP1624106A1 (en) 2006-02-08
DE502005005241D1 (en) 2008-10-16
DE102004037532A1 (en) 2006-03-16

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