EP0783053B1 - Coating device for applying directly or indirectly a fluid or a pasty material on to a moving web - Google Patents

Coating device for applying directly or indirectly a fluid or a pasty material on to a moving web Download PDF

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Publication number
EP0783053B1
EP0783053B1 EP96119128A EP96119128A EP0783053B1 EP 0783053 B1 EP0783053 B1 EP 0783053B1 EP 96119128 A EP96119128 A EP 96119128A EP 96119128 A EP96119128 A EP 96119128A EP 0783053 B1 EP0783053 B1 EP 0783053B1
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EP
European Patent Office
Prior art keywords
applicator
liquid
unit according
pasty medium
metering device
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
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EP96119128A
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German (de)
French (fr)
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EP0783053A1 (en
Inventor
Zygmunt Madrzak
Manfred Veberschär
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication of EP0783053A1 publication Critical patent/EP0783053A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H23/00Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22Addition to the formed paper
    • D21H23/32Addition 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02Apparatus 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
    • B05C11/04Apparatus 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

Definitions

  • the invention relates to a commissioned work for direct or indirect application of a liquid or pasty medium a running material web, in particular made of paper or Carton, with one application device and one at a distance dosing device arranged for this purpose.
  • Such orders which from an order facility for Application of a liquid or pasty medium and one downstream final metering device for final metering of the previously applied medium exist in numerous Refinements known.
  • the order facilities it is for example free jet nozzle application devices, and in the final dosing devices it is for example devices with a Doctor blade.
  • the liquid or pasty medium is the material web to be coated, the e.g. consists of paper, cardboard or a textile material, directly at the order facility and then at the End dosing device passed and thereby, for example supported by a counter roller.
  • the medium When applying the liquid or pasty medium, the medium is initially from the application device on the surface of an application roller applied and then from the final metering device finished dosing, and only then is the medium removed from the Surface of the application roller in an application gap on the Transfer running material web.
  • the invention is therefore based on the technical problem to create generic commissioned work, its structural Effort with good quality of the order of the liquid or pasty medium is reduced.
  • the Application device and the final metering device common drainage area and a common collecting device intended for liquid or pasty medium, which during the Operation of the order work by the order facility and the End dosing device expires.
  • a Collection station saved. By reducing this the overall system becomes more compact and cheaper. Since there is only one collecting station, leaves the system can also be cleaned faster. In addition, less Pump energy consumed.
  • Order setup on or above the common Arranged area and between the application device and the drain surface is at least one flow opening for the flowing liquid or pasty medium is formed.
  • the application device is on or above placed the common drainage surface and excess liquid or pasty medium, which of the downstream final metering device can flow through the at least one flow opening for common Fall arrester flow. Expediently extends the drainage surface from the final metering device under the Application device through to the collecting device or into it.
  • the common drainage surface is preferably composed of two Partial areas formed in the outflow direction of the liquid or pasty medium in a section between the application device and the final metering device overlap that the upstream in the discharge direction Partial area in the overlap area above the downstream located partial area is arranged.
  • the two parts can be formed, for example, in the form of two partial sheets be that overlap in the sub-area mentioned.
  • the Both partial areas of the common drainage surface are included advantageously loosely on top of each other in the overlap area lying on top of each other or freely spaced one above the other educated. In this way, the two Swivel partial areas of the drainage surface against each other.
  • a preferred embodiment of the invention is that To mount the end metering device on a support beam, which on a fixed support around an axis to the longitudinal beam parallel axis is pivotally arranged. Preferably also the upstream on the support beam Part of the drainage surface attached. In other words So then both the final metering device and the upper one Partial area of the drainage area structurally compact on one Support beam mounted. This support beam is then on one fixed carrier pivotally mounted. When swiveling of the supporting beam, e.g. for a change of the doctor element End dosing device or for cleaning purposes, the on Support beam attached partial area of the common drainage surface pivoted together with the support beam and separates easily at the overlap from the other Partial area of the common drainage area.
  • the final metering device is preferably such trained that the holder of the doctor element via a Snap connection can be assembled or disassembled. To this Way, the fine adjustment of the angular position of the Doctor element with respect to a counter or application roller the quick replacement of another squeegee holder will be realized.
  • These interchangeable squeegee mounts take that Doctor element in different angular positions, so that only the suitable squeegee holder with the appropriate angular position of the doctor element must be selected. Through the This snap-in connection can change this very quickly done because not like in conventional constructions loosen complex screw connections and tighten again are.
  • the support beam is expediently provided with a Deflection compensation provided, which is preferably in the form of Tension / compression rods is formed, the corresponding Tension / compression devices are subjected to forces to compensate for a deflection of the support beam.
  • a Deflection compensation provided, which is preferably in the form of Tension / compression rods is formed, the corresponding Tension / compression devices are subjected to forces to compensate for a deflection of the support beam.
  • the support beam is preferably mounted on two Support points from the two front ends of the Support beam in the longitudinal axis direction to the center of the beam are indented a certain distance because Arrangement advantageously less deflection and results in a higher natural frequency for the support beam. Due to the lower deflection, the wall thicknesses can of the supporting beam can be reduced and that Deflection compensation system can be made smaller become. This leads to a lower weight of the swiveling support beam and to a cheaper Construction.
  • the higher natural frequency of the support beam is favorable with
  • the common one Collecting device structurally separate from the drainage surface trained and on the fixed support about a to the longitudinal axis axis parallel to the collecting device arranged. So the fall arrester can be pivoted the liquid or pasty medium collected in it evacuate.
  • the collecting device is expedient trough-shaped, basin-shaped, channel-shaped or in a similar manner designed.
  • a mechanical Coupling between the support beam and the fall arrester provided to the support beam and the fall arrester to be able to swivel at the same time.
  • an expedient Design includes the mechanical coupling between the Support beams and the fall arrester coupling rods, which their ends are articulated. By their corresponding Articulation on the support beam and on the fall arrester, namely spaced from their respective pivot axes, the Coupling rods as transmission levers for the swiveling movement of the Support beam on the fall arrester. So one is enough Swivel drive for the supporting beam, so that both the Beams, as well as by transferring the Coupling rods to pivot the catcher. you saves an additional drive for the swiveling Collection device and thus receives an even simpler and cheaper overall construction.
  • the fixed one Carrier on which the support beam is pivotally articulated, and the solid support on which the catcher can be pivoted is articulated as a common base-like carrier educated.
  • a common base-like carrier educated is this advantageously made of concrete, masonry, steel or a similar suitable material.
  • a free jet nozzle application device is preferably used as the application device intended.
  • This application facility is to achieve the overall construction stationary, so not attached as a whole.
  • a Dosage in the form of a free jet from this Application device emerging liquid or pasty Medium is advantageously carried out via a metering bar.
  • a metering strip is in a manner known per se dosing gap formed between two lips Application device arranged and across Direction of passage of the medium can be shifted.
  • the in the Dosing gap protruding surface of the metering bar and / or their opposite surface of the metering gap is also with a suitable profile.
  • the application device and the final dosing device are preferably matched to one another such that total amount initially applied by the application device in liquid or pasty medium only about 10% or less of the total amount to be coated Material web remain.
  • the excess medium initially applied then flows without any problems via the common drainage surface into the common one Catcher. From there it becomes a reprocessing fed.
  • the figure shows an embodiment of the invention Commissioned work in a schematic side view.
  • a socket-like carrier 11 formed on which the support essential components of the application.
  • two bearing support points 16 are firmly attached to which a support beam 7 is pivoted.
  • the Support beam 7 extends across the machine width.
  • the two bearing support points 16 on the fixed support 11 are in Direction of the longitudinal axis of the support beam 7 from the latter indented ends towards the middle of the beam. The The distance between the two bearing support points 8 is therefore less than the length of the support beam 7.
  • the support beam 7 is with a variety of along its Circumferential distributed tension / compression rods 12 provided about Train / pressure devices, not shown, with train or Compressive forces can be applied.
  • This system out Tension / compression rods 12 form the deflection compensation of the Support beam 7.
  • a final metering device 3 is mounted on the upper longitudinal edge of the figure in the figure Support beam 7.
  • This final metering device carries a doctor element, e.g. a Squeegee blade, squeegee stick or squeegee bar.
  • the This squeegee element is mounted on a Snap connection attached to the support beam.
  • On the support beam 7 is also a partial area 4A of a common drainage area 4 assembled.
  • This partial area 4A is in the form of a drain plate designed that its output at the final metering device 3rd takes and in the operating position shown in the figure extends from the end metering device 3 downwards.
  • a second partial area 4B as a continuation of the common one Drainage area 4 is structurally separated from the partial area 4A and extends further downward from an overlap point 14 to the left in the figure.
  • the overlap point 14 is in the Figure only hinted at.
  • the partial area 4A overlaps the partial area 4B such that it is above the partial area 4B lies.
  • the partial area 4B is also formed as a drain plate, and both drain plates 4A, 4B lie loosely on one another at the overlap point 14.
  • the Drain plate 4B is rigidly attached to the fixed support 11.
  • a collecting trough 5 can be pivoted via a holder 15 mounted on the fixed support 11. In the figure shown operating position protrudes the left in the figure End of the drain plate 4B over the drain pan 5.
  • a free jet nozzle application device 2 is on the Partial surface 4B of the drain surface 4 is rigidly arranged. Between the lower surface of the application device 2 and of the partial area 4B of the drainage area are passage channels 13 trained side by side across the machine width.
  • a material web 1 running in the direction of the arrow is supported on a surface section of one in the direction of the arrow rotating counter-roller 6 and is at the Application device 2 at a short distance and on the End metering device 3 touching the doctor element past.
  • the final metering device 3 is the Free jet nozzle application device 2 at a distance downstream.
  • the support beam 7, which is pivotable about a pivot axis 8 and the drip pan 5, which is about a pivot axis 9 is pivotable, are in the figure only by a Dash-dotted lines indicated coupling rods with each other connected.
  • the coupling rods 10 are each articulated on Support beam 7 and articulated on the sump 5.
  • the Articulation points of the coupling rods 10 on the support beam 7 and the drip pan 5 are each at a distance from their Pivot axes 8, 9 in such a way that at a Swiveling the support beam clockwise through the Coupling a pivoting of the sump 5 in Counterclockwise results, whereby the drip pan 5th is emptied. So if the support beam 7 is not by one shown drive in a service position down is pivoted, the drains automatically at the same time Collecting pan 5.
  • the material web 1 which e.g. consists of paper
  • the free jet nozzle application device 2 past the one liquid or pasty medium by means of a free jet the material web is applied.
  • Material web 1 the final metering device 3, where the previously applied amount of liquid or pasty medium by means of of the doctor element there is finished dosing. It flows the excess medium both on the application device 2 as well as at the final metering device 3 and then flows due to gravity along the drain surface 4 in the Collecting pan 5. That in the figure on the right the medium flowing out of the application device 2 thereby flows under the application device through the passage channels 13 therethrough.

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  • Coating Apparatus (AREA)

Description

Die Erfindung betrifft ein Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton, mit einer Auftragseinrichtung und einer im Abstand dazu angeordneten Dosiereinrichtung.The invention relates to a commissioned work for direct or indirect application of a liquid or pasty medium a running material web, in particular made of paper or Carton, with one application device and one at a distance dosing device arranged for this purpose.

Derartige Auftragswerke, die aus einer Auftragseinrichtung zum Aufbringen eines flüssigen oder pastösen Mediums und einer nachgeschalteten Enddosiereinrichtung zum Fertigdosieren des zuvor aufgebrachten Mediums bestehen, sind in zahlreichen Ausgestaltungen bekannt. Bei den Auftragseinrichtungen handelt es sich beispielsweise um Freistrahldüsen-Auftragseinrichtungen, und bei den Enddosiereinrichtungen handelt es sich beispielsweise um Vorrichtungen mit einer Rakelklinge. Beim direkten Auftragen des flüssigen oder pastösen Mediums wird die zu beschichtende Materialbahn, die z.B. aus Papier, Karton oder einem Textilwerkstoff besteht, unmittelbar an der Auftragseinrichtung und anschließend an der Enddosiereinrichtung vorbeigeführt und dabei beispielsweise von einer Gegenwalze gestützt. Beim indirekten Auftragen des flüssigen oder pastösen Mediums wird das Medium zunächst von der Auftragseinrichtung auf die Oberfläche einer Auftragswalze aufgebracht und anschließend von der Enddosiereinrichtung fertigdosiert, und erst danach wird das Medium von der Oberfläche der Auftragswalze in einem Auftragsspalt auf die laufende Materialbahn übertragen.Such orders, which from an order facility for Application of a liquid or pasty medium and one downstream final metering device for final metering of the previously applied medium exist in numerous Refinements known. At the order facilities it is for example free jet nozzle application devices, and in the final dosing devices it is for example devices with a Doctor blade. When applying the liquid or pasty medium is the material web to be coated, the e.g. consists of paper, cardboard or a textile material, directly at the order facility and then at the End dosing device passed and thereby, for example supported by a counter roller. When applying the liquid or pasty medium, the medium is initially from the application device on the surface of an application roller applied and then from the final metering device finished dosing, and only then is the medium removed from the Surface of the application roller in an application gap on the Transfer running material web.

Nachteilig bei bisherigen Auftragswerken ist der vergleichsweise hohe bauliche Aufwand, der sich für die Gesamtkonstruktion mitsamt den erforderlichen Anbauteilen ergibt.The disadvantage of previous commissioned works is that comparatively high structural effort, which is for the Overall construction including the necessary attachments results.

Der Erfindung liegt daher das technische Problem zugrunde, ein gattungsgemäßes Auftragswerk zu schaffen, dessen baulicher Aufwand bei guter Qualität des Auftrags des flüssigen oder pastösen Mediums verringert ist.The invention is therefore based on the technical problem to create generic commissioned work, its structural Effort with good quality of the order of the liquid or pasty medium is reduced.

Dieses Problem wird erfindungsgemäß von einem Auftragswerk mit den Merkmalen des Patentanspruchs 1 gelöst.According to the invention, this problem is solved by a commissioned work solved the features of claim 1.

Bei der erfindungsgemäßen Lösung ist für die Auftragseinrichtung und die Enddosiereinrichtung eine gemeinsame Ablauffläche und eine gemeinsame Auffangeinrichtung für flüssiges oder pastöses Medium vorgesehen, das während des Betriebs des Auftragswerks von der Auftragseinrichtung und der Enddosiereinrichtung abläuft. Gegenüber bisherigen Konfigurationen mit zwei baulich getrennten Sammelstationen für überschüssiges flüssiges oder pastöses Medium wird eine Sammelstation eingespart. Durch diese Verringerung des baulichen Aufwands wird die Gesamtanlage kompakter und preiswerter. Da nur eine Sammelstation vorhanden ist, läßt sich die Anlage auch schneller reinigen. Außerdem wird weniger Pumpenergie verbraucht. In the solution according to the invention is for the Application device and the final metering device common drainage area and a common collecting device intended for liquid or pasty medium, which during the Operation of the order work by the order facility and the End dosing device expires. Compared to previous ones Configurations with two structurally separate collection stations for excess liquid or pasty medium is a Collection station saved. By reducing this the overall system becomes more compact and cheaper. Since there is only one collecting station, leaves the system can also be cleaned faster. In addition, less Pump energy consumed.

In einer bevorzugten Ausführungsform der Erfindung ist die Auftragseinrichtung auf oder über der gemeinsamen Auflauffläche angeordnet und zwischen der Auftragseinrichtung und der Ablauffläche ist zumindest eine Durchflußöffnung für das abfließende flüssige oder pastöse Mediums ausgebildet. Mit anderen Worten wird die Auftragseinrichtung auf oder oberhalb der gemeinsamen Ablauffläche plaziert und überschüssiges flüssiges oder pastöses Medium, welches von der nachgeschalteten Enddosiereinrichtung abfließt, kann durch die zumindest eine Durchflußöffnung problemlos zur gemeinsamen Auffangeinrichtung fließen. Zweckmäßigerweise erstreckt sich die Ablauffläche also von der Enddosiereinrichtung unter der Auftragseinrichtung hindurch bis über die Auffangeinrichtung oder in diese hinein.In a preferred embodiment of the invention Order setup on or above the common Arranged area and between the application device and the drain surface is at least one flow opening for the flowing liquid or pasty medium is formed. With in other words, the application device is on or above placed the common drainage surface and excess liquid or pasty medium, which of the downstream final metering device can flow through the at least one flow opening for common Fall arrester flow. Expediently extends the drainage surface from the final metering device under the Application device through to the collecting device or into it.

Vorzugsweise ist die gemeinsame Ablauffläche aus zwei Teilflächen gebildet, die sich in Abfließrichtung des flüssigen oder pastösen Mediums in einem Teilbereich zwischen der Auftragseinrichtung und der Enddosiereinrichtung derart überlappen, daß die in Abfließrichtung stromaufwärts gelegene Teilfläche im Überlappungsbereich über der stromabwärts gelegenen Teilfläche angeordnet ist. Die zwei Teilbereiche können beispielsweise in Form von zwei Teilblechen ausgebildet sein, die sich in dem genannten Teilbereich überlappen. Die beiden Teilflächen der gemeinsamen Ablauffläche sind dabei vorteilhafterweise im Überlappungsbereich lose aufeinander aufliegend oder im Abstand frei übereinander liegend ausgebildet. Auf diese Weise lassen sich die beiden Teilflächen der Ablauffläche gegeneinander verschwenken.The common drainage surface is preferably composed of two Partial areas formed in the outflow direction of the liquid or pasty medium in a section between the application device and the final metering device overlap that the upstream in the discharge direction Partial area in the overlap area above the downstream located partial area is arranged. The two parts can be formed, for example, in the form of two partial sheets be that overlap in the sub-area mentioned. The Both partial areas of the common drainage surface are included advantageously loosely on top of each other in the overlap area lying on top of each other or freely spaced one above the other educated. In this way, the two Swivel partial areas of the drainage surface against each other.

Eine bevorzugte Ausgestaltung der Erfindung besteht darin, die Enddosiereinrichtung an einem Tragbalken zu montieren, welcher an einem festen Träger um eine zur Tragbalkenlängsachse parallele Achse verschwenkbar angeordnet ist. Vorzugsweise ist außerdem an dem Tragbalken die stromaufwärts gelegene Teilfläche der Ablauffläche angebracht. Mit anderen Worten ist also dann sowohl die Enddosiereinrichtung als auch die obere Teilfläche der Ablauffläche baulich kompakt an einem Tragbalken montiert. Dieser Tragbalken ist dann an einem festen Träger verschwenkbar gelagert. Bei einem Abschwenken des Tragbalkens, z.B. für einen Wechsel des Rakelelementes der Enddosiereinrichtung oder für Reinigungszwecke, wird die am Tragbalken befestigte Teilfläche der gemeinsamen Ablauffläche zusammen mit dem Tragbalken abgeschwenkt und trennt sich dabei problemlos an der Überlappungsstelle von der anderen Teilfläche der gemeinsamen Ablauffläche.A preferred embodiment of the invention is that To mount the end metering device on a support beam, which on a fixed support around an axis to the longitudinal beam parallel axis is pivotally arranged. Preferably also the upstream on the support beam Part of the drainage surface attached. In other words So then both the final metering device and the upper one Partial area of the drainage area structurally compact on one Support beam mounted. This support beam is then on one fixed carrier pivotally mounted. When swiveling of the supporting beam, e.g. for a change of the doctor element End dosing device or for cleaning purposes, the on Support beam attached partial area of the common drainage surface pivoted together with the support beam and separates easily at the overlap from the other Partial area of the common drainage area.

Da bei dieser Ausgestaltung der Tragbalken nur um eine einzige Schwenkachse am festen Träger für Servicezwecke abschwenkbar ist, ist die Enddosiereinrichtung vorzugsweise derart ausgebildet, daß die Halterung des Rakelelementes über eine Schnappverbindung montierbar oder demontierbar ist. Auf diese Weise kann die Feineinstellung der Winkellage des Rakelelementes bezüglich einer Gegen- oder Auftragswalze durch das schnelle Einwechseln einer anderen Rakelhalterung realisiert werden. Diese Wechselrakelhalterungen nehmen das Rakelelement in unterschiedlichen Winkelpositionen auf, so daß nur die geeignete Rakelhalterung mit der passenden Winkellage des Rakelelementes ausgewählt werden muß. Durch die Schnappverbindung kann dieses Einwechseln sehr schnell erfolgen, da nicht wie bei herkömmlichen Konstruktionen aufwendige Schraubverbindungen zu lösen und wieder anzuziehen sind. So kann auf eine zweite Schwenkachse mit dem zugehörigen Schwenkmechanismus verzichtet werden, die bisher für eine Feineinstellung der Winkellage des Rakelelementes der Enddosiereinrichtung neben der Schwenkachse zum großräumigen Abschwenken erforderlich war. Also ergibt sich bei dieser Ausführungsform eine baulich weiter vereinfachte, kompaktere und preiswertere Konfiguration des Auftragswerks. Since in this configuration the support beam is only one Swiveling axis on the fixed support can be swiveled for service purposes is the final metering device is preferably such trained that the holder of the doctor element via a Snap connection can be assembled or disassembled. To this Way, the fine adjustment of the angular position of the Doctor element with respect to a counter or application roller the quick replacement of another squeegee holder will be realized. These interchangeable squeegee mounts take that Doctor element in different angular positions, so that only the suitable squeegee holder with the appropriate angular position of the doctor element must be selected. Through the This snap-in connection can change this very quickly done because not like in conventional constructions loosen complex screw connections and tighten again are. So you can on a second pivot axis with the associated Swivel mechanism can be dispensed with, previously for a Fine adjustment of the angular position of the doctor element Final dosing device next to the swivel axis for large-scale Swinging was required. So this results in Embodiment a structurally simplified, more compact and cheaper configuration of the order work.

Zweckmäßigerweise ist der Tragbalken mit einem Durchbiegungsausgleich versehen, der vorzugsweise in Form von Zug-/Druckstangen ausgebildet ist, die über entsprechende Zug-/Druckeinrichtungen mit Kräften beaufschlagt werden, um eine Durchbiegung des Tragbalkens auszugleichen. Weiterhin erfolgt die Lagerung des Tragbalkens vorzugsweise an zwei Stützstellen, die von den beiden stirnseitigen Enden des Tragbalkens in Längsachsenrichtung zur Balkenmitte hin um einen gewissen Abstand eingerückt sind, da sich bei dieser Anordnung in vorteilhafter Weise eine geringere Durchbiegung und eine höhere Eigenfrequenz für den Tragbalken ergibt. Aufgrund der geringeren Durchbiegung können die Wandstärken des Tragbalkens verringert werden und das Durchbiegungsausgleichssystem kann kleiner dimensioniert werden. Dies führt zu einem geringeren Gewicht des abschwenkbaren Tragbalkens und zu einer preiswerteren Konstruktion. Die höhere Eigenfrequenz des Tragbalkens ist günstig im Hinblick auf mögliche Schwingungsresonanzen mit dem festen Träger und dem Hallenboden.The support beam is expediently provided with a Deflection compensation provided, which is preferably in the form of Tension / compression rods is formed, the corresponding Tension / compression devices are subjected to forces to compensate for a deflection of the support beam. Farther the support beam is preferably mounted on two Support points from the two front ends of the Support beam in the longitudinal axis direction to the center of the beam are indented a certain distance because Arrangement advantageously less deflection and results in a higher natural frequency for the support beam. Due to the lower deflection, the wall thicknesses can of the supporting beam can be reduced and that Deflection compensation system can be made smaller become. This leads to a lower weight of the swiveling support beam and to a cheaper Construction. The higher natural frequency of the support beam is favorable with regard to possible vibrational resonances with the solid support and the hall floor.

In einer vorteilhaften Ausführungsform ist die gemeinsame Auffangeinrichtung baulich getrennt von der Ablauffläche ausgebildet und an dem festen Träger um eine zur Längsachse der Auffangeinrichtung parallele Achse verschwenkbar angeordnet. So kann die Auffangeinrichtung abgeschwenkt werden, um das darin gesammelte flüssige oder pastöse Medium auszuleeren. Die Auffangeinrichtung ist zweckmäßigerweise wannen-, becken-, rinnenförmig oder in ähnlicher Weise ausgestaltet.In an advantageous embodiment, the common one Collecting device structurally separate from the drainage surface trained and on the fixed support about a to the longitudinal axis axis parallel to the collecting device arranged. So the fall arrester can be pivoted the liquid or pasty medium collected in it evacuate. The collecting device is expedient trough-shaped, basin-shaped, channel-shaped or in a similar manner designed.

In einer bevorzugten Ausführungsform ist eine mechanische Kopplung zwischen dem Tragbalken und der Auffangeinrichtung vorgesehen, um den Tragbalken und die Auffangeinrichtung gleichzeitig verschwenken zu können. In einer zweckmäßigen Ausgestaltung umfaßt die mechanische Kopplung zwischen dem Tragbalken und der Auffangeinrichtung Koppelstangen, die an ihren Enden gelenkig angebracht sind. Durch ihre entsprechende Anlenkung am Tragbalken und an der Auffangeinrichtung, nämlich beabstandet zu deren jeweiligen Schwenkachsen, wirken die Kopplungsstangen als Übertragungshebel der Schwenkbewegung des Tragbalkens auf die Auffangeinrichtung. So genügt ein Schwenkantrieb für den Tragbalken, um damit sowohl den Tragbalken, als auch durch die Übertragung der Kopplungsstangen die Auffangeinrichtung abzuschwenken. Man spart also einen zusätzlichen Antrieb für die verschwenkbare Auffangeinrichtung und erhält so eine noch einfachere und preiswertere Gesamtkonstruktion.In a preferred embodiment is a mechanical Coupling between the support beam and the fall arrester provided to the support beam and the fall arrester to be able to swivel at the same time. In an expedient Design includes the mechanical coupling between the Support beams and the fall arrester coupling rods, which their ends are articulated. By their corresponding Articulation on the support beam and on the fall arrester, namely spaced from their respective pivot axes, the Coupling rods as transmission levers for the swiveling movement of the Support beam on the fall arrester. So one is enough Swivel drive for the supporting beam, so that both the Beams, as well as by transferring the Coupling rods to pivot the catcher. you saves an additional drive for the swiveling Collection device and thus receives an even simpler and cheaper overall construction.

In einer bevorzugten Ausgestaltung der Erfindung ist der feste Träger, an dem der Tragbalken verschwenkbar angelenkt ist, und der feste Träger, an dem die Auffangeinrichtung verschwenkbar angelenkt ist, als ein gemeinsamer sockelartiger Träger ausgebildet. Um Schwingungen des festen Trägers zu vermeiden, ist dieser vorteilhafterweise aus Beton, Mauerwerk, Stahl oder einem ähnlichen geeigneten Material hergestellt.In a preferred embodiment of the invention, the fixed one Carrier on which the support beam is pivotally articulated, and the solid support on which the catcher can be pivoted is articulated as a common base-like carrier educated. To avoid vibrations of the solid support, is this advantageously made of concrete, masonry, steel or a similar suitable material.

Als Auftragseinrichtung ist vorzugsweise eine Freistrahldüsen-Auftragseinrichtung vorgesehen. Um eine preiswerte Gesamtkonstruktion zu erreichen, ist diese Auftragseinrichtung stationär, also nicht als Ganzes abschwenkbar angebracht. Eine Dosierung des in Form eines Freistrahls aus dieser Auftragseinrichtung austretenden flüssigen oder pastösen Mediums erfolgt vorteilhafterweise über eine Dosierleiste. Eine solche Dosierleiste ist in dem in an sich bekannter Weise zwischen zwei Lippen ausgebildeten Dosierspalt der Auftragseinrichtung angeordnet und quer zur Durchtrittsrichtung des Mediums verschiebbar. Die in den Dosierspalt hineinragende Fläche der Dosierleiste und/oder die ihr gegenüberliegende Fläche des Dosierspaltes ist zudem mit einem geeigneten Profil versehen. Durch stärkeres oder weniger starkes Zustellen der Dosierleiste in den Dosierspalt hinein läßt sich die hindurchtretende Menge an flüssigem oder pastösem Medium gut dosieren. Insgesamt erhält man so eine vergleichsweise einfach aufgebaute, kompakte und preiswerte Auftragseinrichtung.A free jet nozzle application device is preferably used as the application device intended. To an inexpensive This application facility is to achieve the overall construction stationary, so not attached as a whole. A Dosage in the form of a free jet from this Application device emerging liquid or pasty Medium is advantageously carried out via a metering bar. Such a metering strip is in a manner known per se dosing gap formed between two lips Application device arranged and across Direction of passage of the medium can be shifted. The in the Dosing gap protruding surface of the metering bar and / or their opposite surface of the metering gap is also with a suitable profile. By stronger or less strong infeed of the metering bar into the metering gap the amount of liquid or Measure the pasty medium well. Overall, you get one comparatively simple, compact and inexpensive Applicator.

Die Auftragseinrichtung und die Enddosiereinrichtung sind vorzugsweise derart aufeinander abgestimmt, daß von der zunächst von der Auftragseinrichtung aufgetragenen Gesamtmenge an flüssigem oder pastösem Medium schließlich nur etwa 10 % oder weniger der Gesamtmenge an der zu beschichtenden Materialbahn verbleiben. Bevorzugt ist eine an der Materialbahn verbleibende Menge von weniger als 6 % der aufgebrachten Gesamtmenge an flüssigem oder pastösem Medium. Das zunächst aufgetragene, überschüssige Medium fließt dann problemlos über die gemeinsame Ablauffläche in die gemeinsame Auffangeinrichtung. Von dort wird es einer Wiederaufbereitung zugeführt.The application device and the final dosing device are preferably matched to one another such that total amount initially applied by the application device in liquid or pasty medium only about 10% or less of the total amount to be coated Material web remain. One is preferred Material web remaining amount of less than 6% of the applied total amount of liquid or pasty medium. The excess medium initially applied then flows without any problems via the common drainage surface into the common one Catcher. From there it becomes a reprocessing fed.

Vorteilhafterweise ist eine Gegenwalze, an der die Materialbahn bei direktem Auftrag gestützt wird, oder eine Auftragswalze, auf die das flüssige oder pastöse Medium zunächst aufgebracht und von dort auf die Materialbahn übertragen wird, abschwenkbar gelagert. Dann kann z.B. für Wartungs- oder Reinigungsarbeiten die Gegen- oder Auftragswalze abgeschwenkt werden, während das übrige Aufragswerk in seiner eingestellten Position verbleiben kann.Advantageously, a counter roll on which the Material web is supported with a direct order, or one Application roller on which the liquid or pasty medium first applied and from there to the material web is transferred, pivoted. Then e.g. For Maintenance or cleaning work the counter or Applicator roller swung away while the rest Order work can remain in its set position.

Nachfolgend wird nun ein bevorzugtes Ausführungsbeispiel des erfindungsgemäßen Auftragswerks mit Bezug auf die beigefügte Zeichnung näher erläutert.A preferred embodiment of the Commissioned work according to the invention with reference to the attached Drawing explained in more detail.

Die Figur zeigt ein Ausführungsbeispiel des erfindungsgemäßen Auftragswerks in einer schematischen Seitenansicht. The figure shows an embodiment of the invention Commissioned work in a schematic side view.

An einem Fundament, z.B. einem Hallenboden, ist ein sockelartiger Träger 11 ausgebildet, an dem sich die wesentlichen Komponenten des Auftragswerks abstützen. Am Träger 11 sind zwei Lagerstützstellen 16 fest angebracht, an denen ein Tragbalken 7 verschwenkbar angelenkt ist. Der Tragbalken 7 erstreckt sich über die Maschinenbreite. Die beiden Lagerstützstellen 16 am festen Träger 11 sind in Richtung der Längsachse des Tragbalkens 7 von dessen stirnseitigen Enden zur Balkenmitte hin eingerückt. Der Abstand der beiden Lagerstützstellen 8 ist also kleiner als die Länge des Tragbalkens 7.On a foundation, e.g. a hall floor is a socket-like carrier 11 formed on which the support essential components of the application. At the Carrier 11, two bearing support points 16 are firmly attached to which a support beam 7 is pivoted. The Support beam 7 extends across the machine width. The two bearing support points 16 on the fixed support 11 are in Direction of the longitudinal axis of the support beam 7 from the latter indented ends towards the middle of the beam. The The distance between the two bearing support points 8 is therefore less than the length of the support beam 7.

Der Tragbalken 7 ist mit einer Vielzahl von entlang seines Umfanges verteilten Zug-/Druckstangen 12 versehen, die über nicht dargestellte Zug-/Druckeinrichtungen mit Zug- oder Druckkräften beaufschlagt werden können. Dieses System aus Zug-/Druckstangen 12 bildet den Durchbiegungsausgleich des Tragbalkens 7. An der in der Figur oberen Längskante des Tragbalkens 7 ist eine Enddosiereinrichtung 3 montiert. Diese Enddosiereinrichtung trägt ein Rakelelement, z.B. eine Rakelklinge, einen Rakelstab oder eine Rakelleiste. Die Halterung dieses Rakelelementes ist über eine Schnappverbindung am Tragbalken befestigt. Am Tragbalken 7 ist ferner eine Teilfläche 4A einer gemeinsamen Ablauffläche 4 montiert. Diese Teilfäche 4A ist in Form eines Ablaufblechs ausgestaltet, das seinen Ausgang an der Enddosiereinrichtung 3 nimmt und sich in der in der Figur gezeigten Betriebsposition von der Enddosiereinrichtung 3 abwärts erstreckt.The support beam 7 is with a variety of along its Circumferential distributed tension / compression rods 12 provided about Train / pressure devices, not shown, with train or Compressive forces can be applied. This system out Tension / compression rods 12 form the deflection compensation of the Support beam 7. On the upper longitudinal edge of the figure in the figure Support beam 7, a final metering device 3 is mounted. This The final metering device carries a doctor element, e.g. a Squeegee blade, squeegee stick or squeegee bar. The This squeegee element is mounted on a Snap connection attached to the support beam. On the support beam 7 is also a partial area 4A of a common drainage area 4 assembled. This partial area 4A is in the form of a drain plate designed that its output at the final metering device 3rd takes and in the operating position shown in the figure extends from the end metering device 3 downwards.

Eine zweite Teilfläche 4B als Fortsetzung der gemeinsamen Ablauffläche 4 ist baulich von der Teilfläche 4A getrennt und erstreckt sich von einer Überlappungsstelle 14 weiter abwärts in der Figur nach links. Die Überlappungsstelle 14 ist in der Figur lediglich angedeutet. Die Teilfläche 4A überlappt dabei die Teilfläche 4B derart, daß sie oberhalb der Teilfläche 4B liegt. Ebenso wie die Teilfläche 4A ist auch die Teilfläche 4B als Ablaufblech ausgebildet, und beide Ablaufbleche 4A, 4B liegen an der Überlappungsstelle 14 lose aufeinander. Das Ablaufblech 4B ist starr am festen Träger 11 angebracht.A second partial area 4B as a continuation of the common one Drainage area 4 is structurally separated from the partial area 4A and extends further downward from an overlap point 14 to the left in the figure. The overlap point 14 is in the Figure only hinted at. The partial area 4A overlaps the partial area 4B such that it is above the partial area 4B lies. Just like the partial area 4A, the partial area 4B is also formed as a drain plate, and both drain plates 4A, 4B lie loosely on one another at the overlap point 14. The Drain plate 4B is rigidly attached to the fixed support 11.

Über eine Halterung 15 ist eine Auffangwanne 5 verschwenkbar am festen Träger 11 montiert. In der in der Figur dargestellten Betriebsposition ragt das in der Figur linke Ende des Ablaufblechs 4B über die Ablaufwanne 5.A collecting trough 5 can be pivoted via a holder 15 mounted on the fixed support 11. In the figure shown operating position protrudes the left in the figure End of the drain plate 4B over the drain pan 5.

Eine Freistrahldüsen-Auftragseinrichtung 2 ist auf der Teilfläche 4B der Ablauffläche 4 starr angeordnet. Zwischen der in der Figur unteren Fläche der Auftragseinrichtung 2 und der Teilfläche 4B der Ablauffläche sind Durchtrittskanäle 13 über die Maschinenbreite nebeneinander ausgebildet.A free jet nozzle application device 2 is on the Partial surface 4B of the drain surface 4 is rigidly arranged. Between the lower surface of the application device 2 and of the partial area 4B of the drainage area are passage channels 13 trained side by side across the machine width.

Eine in Pfeilrichtung durchlaufende Materialbahn 1 stützt sich an einem Oberflächenabschnitt einer sich in Pfeilrichtung drehenden Gegenwalze 6 ab und wird dabei an der Auftragseinrichtung 2 in einem geringen Abstand und an der Enddosiereinrichtung 3 berührend an deren Rakelelement vorbeigeführt. Die Enddosiereinrichtung 3 ist der Freistrahldüsenauftragseinrichtung 2 im Abstand nachgeschaltet.A material web 1 running in the direction of the arrow is supported on a surface section of one in the direction of the arrow rotating counter-roller 6 and is at the Application device 2 at a short distance and on the End metering device 3 touching the doctor element past. The final metering device 3 is the Free jet nozzle application device 2 at a distance downstream.

Der Tragbalken 7, der um eine Schwenkachse 8 verschwenkbar ist, und die Auffangwanne 5, die um eine Schwenkachse 9 verschwenkbar ist, sind über in der Figur lediglich durch eine Strich-Punkt-Linie angedeutete Koppelstangen miteinander verbunden. Die Koppelstangen 10 sind jeweils gelenkig am Tragbalken 7 und an der Auffangwanne 5 angelenkt. Die Anlenkungspunkte der Koppelstangen 10 am Tragbalken 7 und an der Auffangwanne 5 befinden sich jeweils im Abstand zu deren Schwenkachsen 8, 9 und zwar derart, daß sich bei einer Verschwenkung des Tragbalkens im Uhrzeigersinn durch die Kopplung eine Verschwenkung der Auffangwanne 5 im Gegenuhrzeigersinn ergibt, wodurch die Auffangwanne 5 ausgeleert wird. Wenn also der Tragbalken 7 durch einen nicht dargestellten Antrieb in eine Serviceposition nach unten abgeschwenkt wird, entleert sich gleichzeitig automatisch die Auffangwanne 5.The support beam 7, which is pivotable about a pivot axis 8 and the drip pan 5, which is about a pivot axis 9 is pivotable, are in the figure only by a Dash-dotted lines indicated coupling rods with each other connected. The coupling rods 10 are each articulated on Support beam 7 and articulated on the sump 5. The Articulation points of the coupling rods 10 on the support beam 7 and the drip pan 5 are each at a distance from their Pivot axes 8, 9 in such a way that at a Swiveling the support beam clockwise through the Coupling a pivoting of the sump 5 in Counterclockwise results, whereby the drip pan 5th is emptied. So if the support beam 7 is not by one shown drive in a service position down is pivoted, the drains automatically at the same time Collecting pan 5.

In der in der Figur dargestellten Betriebsposition läuft also die Materialbahn 1, die z.B. aus Papier besteht, zunächst an der Freistrahldüsen-Auftragseinrichtung 2 vorbei, an der ein flüssiges oder pastöses Medium mittels eines Freistrahls auf die Materialbahn aufgetragen wird. Danach passiert die Materialbahn 1 die Enddosiereinrichtung 3, wo die zuvor aufgetragene Menge an flüssigem oder pastösem Medium mittels des dortigen Rakelelementes fertigdosiert wird. Dabei fließt das überschüssige Medium sowohl an der Auftragseinrichtung 2 als auch an der Enddosiereinrichtung 3 herab und fließt dann aufgrund der Schwerkraft an der Ablauffläche 4 entlang in die Auffangwanne 5 hinein. Das in der Figur auf der rechten Seite der Auftragseinrichtung 2 abfließende Medium fließt dabei unter der Auftragseinrichtung durch die Durchtrittskanäle 13 hindurch.So runs in the operating position shown in the figure the material web 1, which e.g. consists of paper, first the free jet nozzle application device 2, past the one liquid or pasty medium by means of a free jet the material web is applied. Then it happens Material web 1, the final metering device 3, where the previously applied amount of liquid or pasty medium by means of of the doctor element there is finished dosing. It flows the excess medium both on the application device 2 as well as at the final metering device 3 and then flows due to gravity along the drain surface 4 in the Collecting pan 5. That in the figure on the right the medium flowing out of the application device 2 thereby flows under the application device through the passage channels 13 therethrough.

Wenn der Tragbalken 7 z.B. für einen Wechsel des Rakelelementes der Enddosiereinrichtung 3 im Uhrzeigersinn abgeschwenkt wird, wird das am Tragbalken befindliche Ablaufblech 4A problemlos mit abgeschwenkt, wobei es sich an der Überlappungsstelle 14 vom Ablaufblech 4B löst.If the support beam 7 e.g. for a change of Doctor element of the final metering device 3 in a clockwise direction is pivoted away, that located on the support beam Drain plate 4A easily swiveled with it, which is the overlap point 14 detaches from the drain plate 4B.

Claims (7)

  1. Applicator unit for the direct or indirect application of a liquid or pasty medium to a moving web (1), in a particular a paper or board web, having
    an applicator device (2) and
    a final metering device (3) arranged at a distance therefrom, the final metering device (3) being mounted on a supporting beam (7), which is arranged on a fixed support (11) such that it can be pivoted about an axis (8) parallel to the supporting beam longitudinal axis, and
    for the applicator device (2) and the final metering device (3), a run-off surface (4) extending from the final metering device (3) as far as the collecting device (5) being provided for excess liquid or pasty medium, and a common collecting device (5) being provided for excess liquid or pasty medium,
    characterized in that
    the fixed support (11) is designed as a common, plinth-like support for the final metering device (3) and the collecting device (5), the collecting device (5) being mounted on the plinth-like support (11) by means of a holder (15) such that it can be pivoted.
  2. Applicator unit according to Claim 1, characterized in that the applicator device (2) is arranged on or above the common run-off surface (4) and, between the applicator device (2) and the run-off surface (4), at least one passage opening (13) is formed for the liquid or pasty medium flowing away.
  3. Applicator unit according to Claim 1 or 2, characterized in that the run-off surface (4) is formed as two part surfaces (4A, 4B) which, in the flow-off direction of the liquid or pasty medium, in a sub area between the applicator device (2) and the final metering device (3), overlap in such a way that the part surface (4A) that is upstream in the flow-off direction in the overlap area (14) is arranged above the downstream part surface (4B).
  4. Applicator unit according to Claims 1 and 3, characterized in that the upstream part surface (4A) of the flow-off surface (4) is fitted to the supporting beam (7).
  5. Applicator unit according to Claim 1, characterized in that the common collecting device is designed separately from the run-off surface (4) and is arranged on the fixed support (11) such that it can be pivoted about an axis (9) parallel to the longitudinal axis of the collecting device (5).
  6. Applicator unit according to one of Claims 1, 4 and 5, characterized in that a mechanical coupling (10) is provided between the supporting bar (7) and the collecting device (5) so that they can be pivoted simultaneously.
  7. Applicator unit according to Claim 6, characterized in that the mechanical coupling comprises coupling rods (10) fitted in an articulated manner at their ends.
EP96119128A 1996-01-02 1996-11-29 Coating device for applying directly or indirectly a fluid or a pasty material on to a moving web Expired - Lifetime EP0783053B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19600046 1996-01-02
DE19600046A DE19600046C2 (en) 1996-01-02 1996-01-02 Application unit for direct or indirect application of a liquid or pasty medium to a running material web

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EP0783053B1 true EP0783053B1 (en) 2002-09-11

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US7559990B2 (en) * 1998-05-19 2009-07-14 Eugene A Pankake Coating apparatus and method
JP2002539581A (en) * 1999-03-10 2002-11-19 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Method of forming barrier rib
US20090295098A1 (en) * 1999-05-18 2009-12-03 Pankake Eugene A Coating apparatus and method
DE102007027094A1 (en) 2007-06-12 2008-12-18 Voith Patent Gmbh Plant for coating a fibrous web with a coating medium
CN102698934A (en) * 2012-05-03 2012-10-03 华南理工大学 Coating thickness detecting and adjusting device and production facility applying same

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US3113890A (en) * 1961-06-26 1963-12-10 Kimberly Clark Co Apparatus for smoothing coating materials on a paper web
US3611987A (en) * 1969-09-08 1971-10-12 Kohler Coating Machinery Corp Paper coater blowoff apparatus
GB1337345A (en) * 1970-11-30 1973-11-14 Fuji Photo Film Co Ltd Producing capsule-coated sheets
GB1476787A (en) * 1974-07-04 1977-06-16 Wiggins Teape Ltd Coated sheet material
AT396437B (en) * 1986-10-25 1993-09-27 Voith Gmbh J M PRE-DOSING DEVICE IN A COATING PLANT
DE3916620A1 (en) * 1989-05-22 1990-12-06 Jagenberg Ag DEVICE FOR COATING A MATERIAL RAIL THROUGH A COUNTER ROLLER
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DE9113268U1 (en) * 1991-10-25 1991-12-12 J.M. Voith Gmbh, 89522 Heidenheim Coating device
DE59304229D1 (en) * 1992-02-21 1996-11-28 Voith Gmbh J M Applicator for applying coating color on a paper web
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US5436030A (en) * 1992-09-11 1995-07-25 Consolidated Papers, Inc. Apparatus for and method of minimizing skip coating on a paper web
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SE503836C2 (en) * 1994-12-22 1996-09-16 Btg Kaelle Inventing Ab Application device and method thereof

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US5948477A (en) 1999-09-07
EP0783053A1 (en) 1997-07-09
DE19600046C2 (en) 1998-01-29
JP3689210B2 (en) 2005-08-31
JPH09192563A (en) 1997-07-29
DE19600046A1 (en) 1997-07-17
DE59609651D1 (en) 2002-10-17
US5720812A (en) 1998-02-24

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