EP3302822B1 - Coating apparatus having extension means - Google Patents

Coating apparatus having extension means Download PDF

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Publication number
EP3302822B1
EP3302822B1 EP16725498.6A EP16725498A EP3302822B1 EP 3302822 B1 EP3302822 B1 EP 3302822B1 EP 16725498 A EP16725498 A EP 16725498A EP 3302822 B1 EP3302822 B1 EP 3302822B1
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EP
European Patent Office
Prior art keywords
coating
workpiece
profile
extension means
edge
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EP16725498.6A
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German (de)
French (fr)
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EP3302822A1 (en
Inventor
Stefan Schiele
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Josef Schiele OHG
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Josef Schiele OHG
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Priority to PL16725498T priority Critical patent/PL3302822T3/en
Publication of EP3302822A1 publication Critical patent/EP3302822A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C21/00—Accessories or implements for use in connection with applying liquids or other fluent materials to surfaces, not provided for in groups B05C1/00 - B05C19/00
    • B05C21/005—Masking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0204—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to the edges of essentially flat articles

Definitions

  • the present invention relates to a coating device with a transport device that transports a workpiece and / or a flat profile along a coating head in a transport direction, which provides the edge of the workpiece and / or the flat profile with a coating.
  • Coating devices of this type are known from the prior art. See also JP2011147897 , In these coating devices, a workpiece is transported relative to a coating head, which provides an edge of the workpiece with a coating, for example a lacquer, in particular a water lacquer. However, the coating can also be a radiation-curing lacquer. In the case of the coating heads of the applicant here, an additional negative pressure is present on the coating head in comparison to the ambient pressure, through which an air stream is sucked into the coating head, by means of which the layer thickness of the coating is regulated and too much applied coating material is removed again.
  • the coating devices from the prior art however, have the disadvantage that paint accumulations and / or defects can occur at the corners of the workpieces.
  • the object is achieved with a coating device with a transport device which transports a workpiece and / or a preferably flat profile along a coating head in a transport direction, which provides the edge of a workpiece and / or the profile with a coating, the coating device at least one extension means has, which reversibly extends the edge to be coated and / or the profile in and / or against the transport direction.
  • the present invention relates to a coating device which, for example, applies a lacquer, in particular a water-based lacquer and / or a radiation-curing lacquer, to part of the circumferential edge of a workpiece or and / or to a flat profile.
  • the workpiece / profile can be made of wood, metal, plastic or a combination of these materials.
  • the workpiece / profile can for example be rectangular or square.
  • the workpiece is preferably plate-like provided, ie one dimension is significantly smaller than the other two.
  • At least part of the peripheral edge of the workpiece, usually one side of the peripheral edge, is always coated.
  • the profile can be, for example, a frame part of a window or a door or a kitchen front. In any case, it is important that the coating is applied evenly, in particular that there are no paint lenses or imperfections.
  • the coating device has a coating head or an application chamber through which the lacquer is applied, with a relative movement being present between the application head and the workpiece / profile during coating.
  • the coating head or the application chamber is preferably stationary and the workpiece / profile moves in a particularly linear transport direction relative to the coating head, the movement of the workpiece / profile during coating being continuous or discontinuous.
  • the coating is applied to the edge of the workpiece.
  • one side of the profile is partially or completely coated.
  • the layer thickness with which the lacquer is applied to the workpiece / profile is furthermore preferably regulated by an air stream, the excess lacquer is removed from the workpiece / profile again and / or is evenly distributed over the workpiece / profile.
  • This air flow is preferably generated by applying a negative pressure to the coating head or the application chamber, with which air is sucked through a gap between the workpiece / profile and the coating head or the application chamber, which strips excess paint from the workpiece / profile.
  • This air stream is preferably fed downstream of the coating head or the application chamber to a deposition system which at least partially, preferably almost completely, removes the paint components from the air stream.
  • the coating agent is dried. This can be done, for example, by supplying heat and / or radiation, for example by means of an IR or UV radiator.
  • the coating device has at least one extension means which reversibly extends the edge to be coated or the profile in and / or counter to the transport direction.
  • the extension means is brought into contact with the workpiece / profile before and / or when it enters, and together with it passes through the coating head.
  • the extension means extends the edge to be coated or the profile in the transport direction of the workpiece / profile through the coating head.
  • an extension means can be provided before and / or after the edge or profile to be coated.
  • the extension means extends the edge or profile to be coated in the same shape, i.e. it preferably has at least in the contact area with the workpiece / profile the same width and / or the same contour as the edge to be coated or the profile. If the part of the peripheral edge to be coated or the profile is convex, for example, the part of the extension means which adjoins the edge to be coated is also convex and has at least approximately the same curvature as the edge to be coated or the profile. The same applies, for example, to an edge or a profile with a concave or a straight shape. Preferably, there is as little as possible a gap, in particular no gap, between the extension and the workpiece / profile.
  • Each extension means is preferably provided interchangeably on the coating device, so that it can also be exchanged when the shape of the workpieces / profiles to be coated and / or when the shape of the edge or the profile to be coated changes.
  • the extension means preferably moves at least temporarily, in particular during the coating process, at the same speed and in the same direction as the workpiece / profile.
  • the extension means is preferably accelerated or braked in such a way that it comes into contact with the workpiece / profile, which is moving in particular.
  • it is preferably moved at the same speed and particularly preferably in the same direction as the workpiece / profile during coating.
  • the extension means preferably lies flush with the edge or the profile, at least in the corner region of the edge or the profile to be coated.
  • the extension means preferably tapers starting from the contact area between the workpiece / profile and the extension means in or against the transport direction of the workpiece, ie the distance between the connecting edge of the extension to the workpiece / profile and the coating head increases with increasing distance from the respective one Corner area of the edge to be coated or the coating surface of the profile, parallel to the direction of movement of the workpiece / profile.
  • the extension means consists of a material and / or is provided with a coating on which the coating agent adheres to a reduced extent compared to the workpiece / profile. This makes it easier to remove the coating, which is also necessarily applied to parts of the extension agent.
  • the extension agent in particular in the case of a water-soluble coating agent, can be cooled in particular at or below the dew point of the surrounding air. As a result, the coating agent does not dry on the extension agent and can be removed comparatively easily.
  • the coating device preferably has a cleaning means for the extension means which removes coating means from the extension means.
  • each extension means is cycled, i.e. after coating a workpiece / profile, it is brought back to a starting position and from there it is brought into contact with a new workpiece / profile. During this cycle, the extension agent is then preferably also cleaned.
  • the coating device preferably has a plurality of extension means which are moved in a circle.
  • the extension means can be driven by any drive familiar to a person skilled in the art.
  • Another object of the present invention is a method for coating the edge of a workpiece or a profile, which is transported past a coating head in a transport direction and thereby the edge or one side of the profile is coated by the coating head, in which prior to coating the edge to be coated or the profile is reversibly extended in and / or against the transport direction.
  • the edge to be coated or the side of the profile to be coated is reversibly extended.
  • the extension is removed from the workpiece or profile.
  • the extension means is moved in order to come into contact with the workpiece or the profile.
  • the extension means is preferably accelerated in order to come into contact with the workpiece.
  • the workpiece preferably moves during the approach of the extension means. After contact between the extension means and the workpiece / profile, they move at the same speed and in the same direction until the contact is released.
  • Figure 1 shows the coating device 7 according to the invention, which has a coating head 4 with which a coating agent, for example a lacquer, in particular a water lacquer, is applied to an edge 3 of a workpiece 1.
  • a coating agent for example a lacquer, in particular a water lacquer
  • the coating head has at least one nozzle with which the coating agent is applied to the edge to be coated.
  • the coating head 4 preferably has a means with which an air flow from the surroundings can be generated into the coating head through a gap between the workpiece and the coating head.
  • the agent is a negative pressure relative to the ambient pressure. With the air flow, too much applied coating agent is removed from the workpiece again, or the coating is evened out.
  • the coating device now has at least one, here two extension means 2, each of which directly adjoins the edge to be coated and virtually extends it, and which are transported together with the workpiece through the coating head.
  • each extension means Before being coated, each extension means is brought into contact with the workpiece such that there is preferably, if at all, only a very small gap between the workpiece and the extension means.
  • each extension means 2 is accelerated or braked relative to the workpiece 1.
  • the extension means 2 and the workpiece 1 have the same speed or the same direction of movement.
  • the Extension means 2 removed from the workpiece 1 again and the coating can be dried in the process or afterwards.
  • the extension means 2 are preferably provided with the same shape as the edge to be coated, that is to say they have, for example, the same width B as the workpiece.
  • the extension means preferably has the same curvature at least in the immediate connection area to the workpiece.
  • the connecting edge of the extension means is also straight.
  • the direction of movement 5 of the workpiece is again shown, which in the present case is directed out of the paper plane.
  • Figure 3 shows a further embodiment of the device according to the invention.
  • the extension means 2 have a taper 6. It can be seen that the connecting edge of the extension means, starting from the workpiece, retracts in and against the transport direction. This results in a particularly uniform painting without defects and accumulation of paint.

Description

Die vorliegende Erfindung betrifft eine Beschichtungsvorrichtung mit einer Transportvorrichtung, die ein Werkstück und/oder ein flächiges Profil entlang eines Beschichtungskopfs in einer Transportrichtung transportiert, der die Kante des Werkstücks und/oder das flächige Profil mit einer Beschichtung versieht.The present invention relates to a coating device with a transport device that transports a workpiece and / or a flat profile along a coating head in a transport direction, which provides the edge of the workpiece and / or the flat profile with a coating.

Derartige Beschichtungsvorrichtungen sind aus dem Stand der Technik bekannt. Siehe hierzu JP2011147897 . Bei diesen Beschichtungsvorrichtungen wird ein Werkstück relativ zu einem Beschichtungskopf transportiert, der eine Kante des Werkstücks mit einer Beschichtung, beispielsweise einer Lackierung, insbesondere einer Wasserlackierung versieht. Bei der Beschichtung kann es sich aber auch um einen strahlungshärtenden Lack handeln. Bei den Beschichtungsköpfen der hiesigen Anmelderin liegt an dem Beschichtungskopf zusätzlich ein Unterdruck im Vergleich zum Umgebungsdruck an, durch den ein Luftstrom in den Beschichtungskopf eingesaugt wird, durch den die Schichtdicke der Beschichtung reguliert wird und zu viel aufgetragenes Beschichtungsmaterial wieder abgetragen wird. Die Beschichtungsvorrichtungen aus dem Stand der Technik haben jedoch den Nachteil, dass an den Ecken der Werkstücke Lackanhäufungen und/oder Fehlstehlen auftreten können.Coating devices of this type are known from the prior art. See also JP2011147897 , In these coating devices, a workpiece is transported relative to a coating head, which provides an edge of the workpiece with a coating, for example a lacquer, in particular a water lacquer. However, the coating can also be a radiation-curing lacquer. In the case of the coating heads of the applicant here, an additional negative pressure is present on the coating head in comparison to the ambient pressure, through which an air stream is sucked into the coating head, by means of which the layer thickness of the coating is regulated and too much applied coating material is removed again. The coating devices from the prior art, however, have the disadvantage that paint accumulations and / or defects can occur at the corners of the workpieces.

Es war deshalb die Aufgabe der vorliegenden Erfindung eine Beschichtungsvorrichtung zur Verfügung zu stellen, die die Nachteile des Standes der Technik nicht aufweist.It was therefore the object of the present invention to provide a coating device which does not have the disadvantages of the prior art.

Gelöst wird die Aufgabe mit einer Beschichtungsvorrichtung mit einer Transportvorrichtung, die ein Werkstück und/oder ein vorzugsweise flächiges Profil entlang eines Beschichtungskopfs in einer Transportrichtung transportiert, der die Kante eines Werkstücks und/oder das Profil mit einer Beschichtung versieht, wobei die Beschichtungsvorrichtung mindestens ein Verlängerungsmittel aufweist, das die zu beschichtende Kante und/oder das Profil in und/oder entgegen der Transportrichtung reversibel verlängert.The object is achieved with a coating device with a transport device which transports a workpiece and / or a preferably flat profile along a coating head in a transport direction, which provides the edge of a workpiece and / or the profile with a coating, the coating device at least one extension means has, which reversibly extends the edge to be coated and / or the profile in and / or against the transport direction.

Die zu diesem Gegenstand der vorliegenden Erfindung gemachten Ausführungen gelten für das erfindungsgemäße Verfahren gleichermaßen und umgekehrt.The statements made on this subject of the present invention apply equally to the method according to the invention and vice versa.

Die vorliegende Erfindung betrifft eine Beschichtungsvorrichtung, die beispielsweise einen Lack, insbesondere einen wasserbasierten Lack und/oder einen strahlungshärtenden Lack, auf einen Teil der Umlaufkante eines Werkstücks oder und/oder auf ein flächiges Profil aufträgt. Das Werkstück/Profil kann aus Holz, Metall Kunststoff oder einer Kombination aus diesen Werkstoffen gefertigt sein. Das Werkstück/Profil kann beispielsweise rechteckig oder quadratisch geformt sein. Insbesondere das Werkstück ist vorzugsweise plattenartig vorgesehen, d.h. eine Dimension ist wesentlich kleiner als die beiden anderen. Immer wird zumindest ein Teil der Umlaufkante des Werkstücks, in der Regel eine Seite der Umlaufkante, beschichtet. Bei dem Profil kann es sich beispielsweise um ein Rahmenteil eines Fensters oder einer Tür oder um eine Küchenfront handeln. In jedem Fall ist es wichtig, dass die Beschichtung gleichmäßig vorgesehen wird, insbesondere dass keine Lacklinsen oder Fehlstellen vorhanden sind.The present invention relates to a coating device which, for example, applies a lacquer, in particular a water-based lacquer and / or a radiation-curing lacquer, to part of the circumferential edge of a workpiece or and / or to a flat profile. The workpiece / profile can be made of wood, metal, plastic or a combination of these materials. The workpiece / profile can for example be rectangular or square. In particular, the workpiece is preferably plate-like provided, ie one dimension is significantly smaller than the other two. At least part of the peripheral edge of the workpiece, usually one side of the peripheral edge, is always coated. The profile can be, for example, a frame part of a window or a door or a kitchen front. In any case, it is important that the coating is applied evenly, in particular that there are no paint lenses or imperfections.

Die Beschichtungsvorrichtung weist erfindungsgemäß einen Beschichtungskopf oder eine Applikationskammer auf, durch den/die der Lackauftrag erfolgt, wobei beim Beschichten zwischen dem Auftragskopf und dem Werkstück/Profil eine Relativbewegung vorhanden ist. Vorzugsweise ist der Beschichtungskopf oder die Applikationskammer ortsfest und das Werkstück/Profil bewegt sich in einer insbesondere linearen Transportrichtung relativ zu dem Beschichtungskopf, wobei die Bewegung des Werkstücks/Profils beim Beschichten kontinuierlich oder diskontinuierlich sein kann. Beim Transport des Werkstücks wird die Beschichtung auf die Kante des Werkstücks aufgetragen. Bei dem Profil wird in der Regel eine Seite teilweise oder vollständig beschichtet. Weiterhin bevorzugt wird die Schichtdicke, mit der der Lack auf das Werkstück/Profil aufgetragen wird durch einen Luftstrom reguliert, der überschüssigen Lack von dem Werkstück/Profil wieder entfernt und/oder gleichmäßig auf dem Werkstück/Profil verteilt. Dieser Luftstrom wird vorzugsweise dadurch erzeugt, dass an den Beschichtungskopf oder die Applikationskammer ein Unterdruck angelegt wird, mit dem Luft durch einen Spalt zwischen dem Werkstück/Profil und dem Beschichtungskopf oder die Applikationskammer gesaugt wird, der überschüssigen Lack von dem Werkstück/Profil abstreift.According to the invention, the coating device has a coating head or an application chamber through which the lacquer is applied, with a relative movement being present between the application head and the workpiece / profile during coating. The coating head or the application chamber is preferably stationary and the workpiece / profile moves in a particularly linear transport direction relative to the coating head, the movement of the workpiece / profile during coating being continuous or discontinuous. When transporting the workpiece, the coating is applied to the edge of the workpiece. As a rule, one side of the profile is partially or completely coated. The layer thickness with which the lacquer is applied to the workpiece / profile is furthermore preferably regulated by an air stream, the excess lacquer is removed from the workpiece / profile again and / or is evenly distributed over the workpiece / profile. This air flow is preferably generated by applying a negative pressure to the coating head or the application chamber, with which air is sucked through a gap between the workpiece / profile and the coating head or the application chamber, which strips excess paint from the workpiece / profile.

Vorzugsweise wird dieser Luftstrom stromabwärts von dem Beschichtungskopf oder der Applikationskammer einem Abscheidesystem zugeführt, das die Lackbestandteile zumindest teilweise, vorzugsweise nahezu vollständig, aus dem Luftstrom entfernt.This air stream is preferably fed downstream of the coating head or the application chamber to a deposition system which at least partially, preferably almost completely, removes the paint components from the air stream.

Nach dem Beschichten wird das Beschichtungsmittel getrocknet. Dies kann beispielsweise unter Zufuhr von Wärme und/oder Strahlung, beispielsweise mittels eines IR- oder UV-Strahlers erfolgen.After coating, the coating agent is dried. This can be done, for example, by supplying heat and / or radiation, for example by means of an IR or UV radiator.

Erfindungsgemäß weist die Beschichtungsvorrichtung mindestens ein Verlängerungsmittel auf, das die zu beschichtende Kante oder das Profil in und/oder entgegen der Transportrichtung reversibel verlängert.According to the invention, the coating device has at least one extension means which reversibly extends the edge to be coated or the profile in and / or counter to the transport direction.

Das Verlängerungsmittel wird vor und/oder beim Eintritt des Werkstücks/Profils mit diesem in Kontakt gebracht und passiert mit diesem gemeinsam den Beschichtungskopf. Das Verlängerungsmittel verlängert die zu beschichtende Kante oder das Profil in der Transportrichtung des Werkstücks/Profils durch den Beschichtungskopf. Bezogen auf die Transportrichtung des Werkstücks kann demnach ein Verlängerungsmittel vor und/oder nach der zu beschichtenden Kante oder des Profils vorgesehen sein.The extension means is brought into contact with the workpiece / profile before and / or when it enters, and together with it passes through the coating head. The extension means extends the edge to be coated or the profile in the transport direction of the workpiece / profile through the coating head. Related to the According to the transport direction of the workpiece, an extension means can be provided before and / or after the edge or profile to be coated.

Vorzugsweise verlängert das Verlängerungsmittel die zu beschichtende Kante oder das Profil formgleich, d.h. es weist vorzugsweise zumindest im Kontaktbereich mit dem Werkstück/Profil die gleiche Breite und/oder die gleiche Kontur wie die zu beschichtende Kante oder das Profil auf. Ist der Teil der zu beschichtenden Umlaufkante oder des Profils beispielsweise konvex, ist der Teil des Verlängerungsmittels, der sich an die zu beschichtende Kante anschließt ebenfalls konvex und weist zumindest annähernd dieselbe Krümmung auf wie die zu beschichtende Kante oder das Profil. Analoges gilt beispielsweise für eine Kante oder ein Profil mit einer konkaven oder eine geraden Form. Vorzugsweise ist zwischen der Verlängerung und dem Werkstück/Profil ein möglichst geringer, insbesondere kein Spalt vorhanden.Preferably, the extension means extends the edge or profile to be coated in the same shape, i.e. it preferably has at least in the contact area with the workpiece / profile the same width and / or the same contour as the edge to be coated or the profile. If the part of the peripheral edge to be coated or the profile is convex, for example, the part of the extension means which adjoins the edge to be coated is also convex and has at least approximately the same curvature as the edge to be coated or the profile. The same applies, for example, to an edge or a profile with a concave or a straight shape. Preferably, there is as little as possible a gap, in particular no gap, between the extension and the workpiece / profile.

Vorzugsweise ist jedes Verlängerungsmittel austauschbar an der Beschichtungsvorrichtung vorgesehen, so dass es bei einem Wechsel der Form der zu beschichtenden Werkstücke/Profile und/oder bei einem Wechsel der Form der zu beschichtenden Kante oder des Profils ebenfalls ausgewechselt werden kann.Each extension means is preferably provided interchangeably on the coating device, so that it can also be exchanged when the shape of the workpieces / profiles to be coated and / or when the shape of the edge or the profile to be coated changes.

Vorzugsweise bewegt sich das Verlängerungsmittel zumindest zeitweise, insbesondere während des Beschichtungsvorgangs, mit derselben Geschwindigkeit und in derselben Richtung wie das Werkstück/Profil. Vorzugsweise wird das Verlängerungsmittel vor dem Kontakt mit dem Werkstück/Profil so beschleunigt oder abgebremst, dass es mit dem sich insbesondere bewegenden Werkstück/Profil in Kontakt kommt. Sobald ein Kontakt zwischen Verlängerungsmittel und dem Werkstück/Profil vorliegt, wird es insbesondere beim Beschichten vorzugsweise mit derselben Geschwindigkeit und besonders bevorzugt in derselben Richtung wie das Werkstück/Profil bewegt. Nachdem die verlängerte Ecke des Werkstücks/Profils und/oder das Verlängerungsmittel den Beschichtungskopf verlassen hat, wird dieses wieder relativ zu dem Werkstück/Profil beschleunigt oder abgebremst und/oder verändert so seine Bewegungsrichtung, dass sich der Kontakt zwischen dem Verlängerungsmittel und dem Werkstück/Profil wieder löst.The extension means preferably moves at least temporarily, in particular during the coating process, at the same speed and in the same direction as the workpiece / profile. Before the contact with the workpiece / profile, the extension means is preferably accelerated or braked in such a way that it comes into contact with the workpiece / profile, which is moving in particular. As soon as there is contact between the extension means and the workpiece / profile, it is preferably moved at the same speed and particularly preferably in the same direction as the workpiece / profile during coating. After the extended corner of the workpiece / profile and / or the extension means has left the coating head, this is again accelerated or decelerated relative to the workpiece / profile and / or changes its direction of movement such that the contact between the extension means and the workpiece / profile solves again.

Vorzugsweise liegt das Verlängerungsmittel zumindest im Eckbereich der zu beschichtenden Kante oder des Profils bündig an der Kante bzw. dem Profil an. Vorzugsweise verjüngt sich das Verlängerungsmittel ausgehend von dem Kontaktbereich zwischen dem Werkstück/Profil und dem Verlängerungsmittel in oder gegen die Transportrichtung des Werkstücks, d.h. der Abstand zwischen der Anschlusskante der Verlängerung an das Werkstück/Profil und dem Beschichtungskopf vergrößert sich mit zunehmendem Abstand von dem jeweiligen Eckbereich der zu beschichtenden Kante bzw. der Beschichtungsfläche des Profils, parallel zur Bewegungsrichtung des Werkstücks/Profils.The extension means preferably lies flush with the edge or the profile, at least in the corner region of the edge or the profile to be coated. The extension means preferably tapers starting from the contact area between the workpiece / profile and the extension means in or against the transport direction of the workpiece, ie the distance between the connecting edge of the extension to the workpiece / profile and the coating head increases with increasing distance from the respective one Corner area of the edge to be coated or the coating surface of the profile, parallel to the direction of movement of the workpiece / profile.

Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung besteht das Verlängerungsmittel aus einem Werkstoff und/oder ist es mit einer Beschichtung versehen, auf der das Beschichtungsmittel im Vergleich zu dem Werkstück/Profil vermindert haftet. Dadurch kann die Beschichtung, die zwangsläufig auch auf Teile des Verlängerungsmittels aufgetragen wird, leichter wieder entfernt werden.According to a preferred embodiment of the present invention, the extension means consists of a material and / or is provided with a coating on which the coating agent adheres to a reduced extent compared to the workpiece / profile. This makes it easier to remove the coating, which is also necessarily applied to parts of the extension agent.

Alternativ oder zusätzlich kann, insbesondere bei einem wasserlöslichen Beschichtungsmittel das Verlängerungsmittel insbesondere auf oder unter den Taupunkt der umgebenden Luft gekühlt werden. Dadurch trocknet das Beschichtungsmittel nicht auf dem Verlängerungsmittel und kann vergleichsweise einfach entfernt werden.Alternatively or additionally, in particular in the case of a water-soluble coating agent, the extension agent can be cooled in particular at or below the dew point of the surrounding air. As a result, the coating agent does not dry on the extension agent and can be removed comparatively easily.

Vorzugsweise weist die Beschichtungsvorrichtung eine Reinigung für das Verlängerungsmittel auf, die Beschichtungsmittel von dem Verlängerungsmittel entfernt.The coating device preferably has a cleaning means for the extension means which removes coating means from the extension means.

Vorzugsweise wird jedes Verlängerungsmittel im Kreis gefahren, d.h. nach dem Beschichten eines Werkstücks/Profils wird es wieder in eine Ausgangsposition gebracht und von dort wiederum in Anlage mit einem neuen Werkstück/Profil gebracht. Während dieses Kreislaufs erfolgt dann vorzugsweise auch die Reinigung des Verlängerungsmittels. Vorzugsweise weist die Beschichtungsvorrichtung mehrere Verlängerungsmittel auf, die im Kreis gefahren werden. Der Antrieb des Verlängerungsmittels kann durch jeden dem Fachmann geläufigen Antrieb erfolgen.Preferably, each extension means is cycled, i.e. after coating a workpiece / profile, it is brought back to a starting position and from there it is brought into contact with a new workpiece / profile. During this cycle, the extension agent is then preferably also cleaned. The coating device preferably has a plurality of extension means which are moved in a circle. The extension means can be driven by any drive familiar to a person skilled in the art.

Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Beschichtung der Kante eines Werkstücks oder eines Profils, das an einem Beschichtungskopf vorbei in einer Transportrichtung transportiert wird und dabei die Kante oder eine Seite des Profils von dem Beschichtungskopf beschichtet wird, bei dem vor dem Beschichten die zu beschichtende Kante oder das Profil in und/oder gegen die Transportrichtung reversibel verlängert wird.Another object of the present invention is a method for coating the edge of a workpiece or a profile, which is transported past a coating head in a transport direction and thereby the edge or one side of the profile is coated by the coating head, in which prior to coating the edge to be coated or the profile is reversibly extended in and / or against the transport direction.

Die zu diesem Gegenstand der vorliegenden Erfindung gemachten Ausführungen gelten für die erfindungsgemäße Vorrichtung gleichermaßen und umgekehrt.The statements made on this subject of the present invention apply equally to the device according to the invention and vice versa.

Bei dem erfindungsgemäßen Verfahren wird die zu beschichtende Kante oder die Seite des zu beschichtenden Profils reversibel verlängert. Dadurch ergeben sich insbesondere im Anfangs- und Endbereich bezogen auf die Transportrichtung des Werkstücks/Profils keine Lackanhäufungen bzw. Fehlstellen. Nach dem Beschichten wird die Verlängerung wieder von dem Werkstück oder dem Profil entfernt.In the method according to the invention, the edge to be coated or the side of the profile to be coated is reversibly extended. As a result, especially in the start and end area, there are no paint piles or imperfections in relation to the transport direction of the workpiece / profile. After coating, the extension is removed from the workpiece or profile.

Um mit dem Werkstück oder dem Profil in Kontakt zu kommen, wird das Verlängerungsmittel bewegt. Vorzugsweise wird das Verlängerungsmittel beschleunigt, um mit dem Werkstück in Kontakt zu kommen. Vorzugsweise bewegt sich das Werkstück während der Annäherung des Verlängerungsmittels. Nach dem Kontakt zwischen Verlängerungsmittel und dem Werkstück/Profil, bewegen sich diese mit derselben Geschwindigkeit und in derselben Richtung bis der Kontakt wieder gelöst wird.The extension means is moved in order to come into contact with the workpiece or the profile. The extension means is preferably accelerated in order to come into contact with the workpiece. The workpiece preferably moves during the approach of the extension means. After contact between the extension means and the workpiece / profile, they move at the same speed and in the same direction until the contact is released.

Im Folgenden werden die Erfindungen anhand der Figuren 1-3 erläutert. Diese Erläuterungen sind lediglich beispielhaft und schränken den allgemeinen Erfindungsgedanken nicht ein.

Figuren 1 und 2
zeigen zwei Ansichten der erfindungsgemäßen Beschichtungsvorrichtung.
Figur 3
zeigt ein Verlängerungsmittel mit einer Verjüngung.
In the following, the inventions based on the Figures 1-3 explained. These explanations are only examples and do not limit the general idea of the invention.
Figures 1 and 2
show two views of the coating device according to the invention.
Figure 3
shows an extension means with a taper.

Figur 1 zeigt die erfindungsgemäße Beschichtungsvorrichtung 7, die einen Beschichtungskopf 4 aufweist, mit dem ein Beschichtungsmittel beispielsweise ein Lack insbesondere ein Wasserlack auf eine Kante 3 eines Werkstücks 1 aufgetragen wird. Dazu bewegt sich das Werkstück 1 in der durch den Pfeil 5 angezeigten Richtung, hier von links nach rechts. Der Beschichtungskopf weist mindestens eine Düse auf, mit der das Beschichtungsmittel auf die zu beschichtende Kante aufgetragen wird. Vorzugsweise weist der Beschichtungskopf 4 darüber hinaus ein Mittel auf, mit dem ein Luftstrom aus der Umgebung durch einen Spalt zwischen Werkstück und Beschichtungskopf in den Beschichtungskopf hinein erzeugt werden kann. Beispielsweise handelt es sich bei dem Mittel um einen Unterdruck relativ zu dem Umgebungsdruck. Mit dem Luftstrom wird zu viel aufgetragenes Beschichtungsmittel wieder von dem Werkstück abgetragen, bzw. die Beschichtung vergleichmäßigt. Erfindungsgemäß weist die Beschichtungsvorrichtung nun mindestens ein, hier zwei Verlängerungsmittel 2 auf, die sich jeweils unmittelbar an die zu beschichtende Kante anschließen und diese virtuell verlängern und die gemeinsam mit dem Werkstück durch den Beschichtungskopf transportiert werden. Jedes Verlängerungsmittel wird vor dem Beschichten mit dem Werkstück so in Kontakt gebracht, dass vorzugsweise, wenn überhaupt, nur ein sehr geringer Spalt zwischen dem Werkstück und dem Verlängerungsmittel vorhanden ist. Dazu wird jedes Verlängerungsmittel 2 relativ zu dem Werkstück 1 beschleunigt, bzw. abgebremst. Während des Beschichtens insbesondere des Bereichs der Kante, der sich an das Verlängerungsmittel anschließt, weisen das Verlängerungsmittel 2 und das Werkstück 1 dieselbe Geschwindigkeit, bzw. dieselbe Bewegungsrichtung auf. Nachdem die Kante 3 beschichtet worden ist, werden die Verlängerungsmittel 2 wieder von dem Werkstück 1 entfernt und die Beschichtung kann dabei oder danach getrocknet werden. Figure 1 shows the coating device 7 according to the invention, which has a coating head 4 with which a coating agent, for example a lacquer, in particular a water lacquer, is applied to an edge 3 of a workpiece 1. For this purpose, the workpiece 1 moves in the direction indicated by the arrow 5, here from left to right. The coating head has at least one nozzle with which the coating agent is applied to the edge to be coated. In addition, the coating head 4 preferably has a means with which an air flow from the surroundings can be generated into the coating head through a gap between the workpiece and the coating head. For example, the agent is a negative pressure relative to the ambient pressure. With the air flow, too much applied coating agent is removed from the workpiece again, or the coating is evened out. According to the invention, the coating device now has at least one, here two extension means 2, each of which directly adjoins the edge to be coated and virtually extends it, and which are transported together with the workpiece through the coating head. Before being coated, each extension means is brought into contact with the workpiece such that there is preferably, if at all, only a very small gap between the workpiece and the extension means. For this purpose, each extension means 2 is accelerated or braked relative to the workpiece 1. During the coating, in particular of the region of the edge which adjoins the extension means, the extension means 2 and the workpiece 1 have the same speed or the same direction of movement. After the edge 3 has been coated, the Extension means 2 removed from the workpiece 1 again and the coating can be dried in the process or afterwards.

Wie insbesondere Figur 2 entnommen werden kann, sind die Verlängerungsmittel 2 vorzugsweise formgleich mit der zu beschichtenden Kante vorgesehen, das heißt sie weisen beispielsweise dieselbe Breite B wie das Werkstück auf. Für den Fall, dass die zu beschichtende Kante eine Krümmung aufweist, hat das Verlängerungsmittel zumindest im unmittelbaren Anschlussbereich zu dem Werkstück vorzugsweise dieselbe Krümmung. Für den Fall, dass die zu beschichtende Kante gerade ist, ist die Anschlusskante des Veriängerungsmittels ebenfalls gerade. In Figur 2 ist wiederum die Bewegungsrichtung 5 des Werkstücks dargestellt, die in dem vorliegenden Fall aus der Papierebene herausgerichtet ist.How in particular Figure 2 can be removed, the extension means 2 are preferably provided with the same shape as the edge to be coated, that is to say they have, for example, the same width B as the workpiece. In the event that the edge to be coated has a curvature, the extension means preferably has the same curvature at least in the immediate connection area to the workpiece. In the event that the edge to be coated is straight, the connecting edge of the extension means is also straight. In Figure 2 the direction of movement 5 of the workpiece is again shown, which in the present case is directed out of the paper plane.

Figur 3 zeigt eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung. Im vorliegenden Fall weisen die Verlängerungsmittel 2 eine Verjüngung 6 auf. Es ist zu erkennen, dass sich die Anschlusskante des Verlängerungsmittels ausgehend von dem Werkstück in und gegen die Transportrichtung zurückzieht. Dadurch wird eine besonders gleichmäßige Lackierung ohne Fehlstellen und Lackanhäufung erzielt. Figure 3 shows a further embodiment of the device according to the invention. In the present case, the extension means 2 have a taper 6. It can be seen that the connecting edge of the extension means, starting from the workpiece, retracts in and against the transport direction. This results in a particularly uniform painting without defects and accumulation of paint.

Der Fachmann versteht, dass die Figurenbeschreibung analog auch für ein Profil gilt, bei dem in der Regel eine Seite des Profils beschichtet wird.The person skilled in the art understands that the description of the figures also applies analogously to a profile in which one side of the profile is generally coated.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Werkstück, ProfilWorkpiece, profile
22
Verlängerungsmittelextenders
33
Zu beschichtende KanteEdge to be coated
44
Beschichtungskopf, ApplikationskammerCoating head, application chamber
55
Transportrichtung des WerkstücksDirection of transport of the workpiece
66
Verjüngungrejuvenation
77
Beschichtungsvorrichtungcoater
BB
Breite des Werkstücks oder des Verlängerungsmittels im KontaktbereichWidth of the workpiece or the extension means in the contact area

Claims (10)

  1. Coating device (7) with a transport device, which transports a workpiece (1) and/or a preferably flat profile along a coating head (4) in a transport direction (5), which equips the edge (3) of the workpiece (1) and/or the profile with a coating, wherein the coating head (4) has a means with which an air stream can be generated from the surroundings through a gap between the workpiece (1) and the coating head (4) into the coating head (4), wherein the means is in particular underpressure, wherein the coating device (7) has at least one extension means (2), which reversibly extends the edge (3) to be coated or the profile in and/or against the transport direction (5), characterised in that the extension means (2) consists of a material and/or is equipped with a coating to which the coating means adheres less compared to the workpiece/profile and/or wherein the extension means (2) is cooled, preferably to or below the dew point of surrounding air.
  2. Coating device (7) according to claim 1, characterised in that the extension means (2) extends the edge and/or the profile in the same form.
  3. Coating device (7) according to one of the preceding claims, characterised in that the extension means (2) lies flush against the edge (3) and/or the profile.
  4. Coating device (7) according to one of the preceding claims, characterised in that it has cleaning for the extension means (2).
  5. Method for coating the edge (3) of a workpiece (1) and/or a profile, each being transported past a coating head (4) of a coating device (7) according to one of the preceding claims in a transport direction (5) whilst the edge (3) of the workpiece and/or a side of the flat profile is coated by the coating head, characterised in that the edge (3) and/or the profile to be coated is/are reversibly extended in and/or against the transport direction with the extension means (2) prior to coating.
  6. Method according to claim 5, characterised in that the extension means (2) is accelerated in order to come into contact with the workpiece/profile.
  7. Method according to one of the claims 5 or 6, characterised in that the extension means (2) is moved at the same speed as the workpiece/profile is moved at least some of the time, in particular during the coating process.
  8. Method according to one of the claims 5 to 7, characterised in that the extension means is driven in a circle.
  9. Method according to one of the claims 5 to 8, characterised in that the coating device has one or more extension means on each side of the workpiece, which are used alternately.
  10. Method according to claim 9, characterised in that the extension means can be operated and/or controlled in cycles.
EP16725498.6A 2015-05-26 2016-05-24 Coating apparatus having extension means Active EP3302822B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16725498T PL3302822T3 (en) 2015-05-26 2016-05-24 Coating apparatus having extension means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015209616.5A DE102015209616A1 (en) 2015-05-26 2015-05-26 Coating device with an extension means
PCT/EP2016/061668 WO2016188990A1 (en) 2015-05-26 2016-05-24 Coating apparatus having extension means

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Publication Number Publication Date
EP3302822A1 EP3302822A1 (en) 2018-04-11
EP3302822B1 true EP3302822B1 (en) 2020-02-12

Family

ID=56084026

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EP16725498.6A Active EP3302822B1 (en) 2015-05-26 2016-05-24 Coating apparatus having extension means

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Country Link
US (1) US20180141071A1 (en)
EP (1) EP3302822B1 (en)
CA (1) CA2987105A1 (en)
DE (1) DE102015209616A1 (en)
PL (1) PL3302822T3 (en)
PT (1) PT3302822T (en)
RU (1) RU2017145648A (en)
WO (1) WO2016188990A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595203A (en) * 1968-08-02 1971-07-27 Jack A Fabulich Apparatus for coating edges of plank materials such as particle board plywood and-or platen board
ES1054725Y (en) * 2003-05-14 2003-12-01 Barberan Latorre Jesus Frco DEVICE FOR THE APPLICATION OF A FILLING PRODUCT ON POROUS SURFACES OF PANELS OR WOOD PROFILES
KR101097519B1 (en) * 2005-06-25 2011-12-22 엘지디스플레이 주식회사 Coating apparatus and method of forming coating layer
JP5489743B2 (en) * 2010-01-22 2014-05-14 株式会社ブリヂストン Coating jig and coating method
DE102012017186A1 (en) * 2012-08-30 2014-03-06 Wieland-Werke Ag Mask for a coating system, coating system and method of making a coated substrate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20180141071A1 (en) 2018-05-24
EP3302822A1 (en) 2018-04-11
DE102015209616A1 (en) 2016-12-01
RU2017145648A (en) 2019-06-27
CA2987105A1 (en) 2016-12-01
PT3302822T (en) 2020-04-22
WO2016188990A1 (en) 2016-12-01
PL3302822T3 (en) 2020-07-27

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