EP0935999A1 - Method and system for colour change in a coating installation using a pig - Google Patents

Method and system for colour change in a coating installation using a pig Download PDF

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Publication number
EP0935999A1
EP0935999A1 EP99101968A EP99101968A EP0935999A1 EP 0935999 A1 EP0935999 A1 EP 0935999A1 EP 99101968 A EP99101968 A EP 99101968A EP 99101968 A EP99101968 A EP 99101968A EP 0935999 A1 EP0935999 A1 EP 0935999A1
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EP
European Patent Office
Prior art keywords
feed line
separating element
atomizer
line
paint
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.)
Withdrawn
Application number
EP99101968A
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German (de)
French (fr)
Inventor
Ralf Kahmann
Udo Klein
Winfried Ott
Wolker Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lactec GmbH Gesellschaft fuer Moderne Lackiertechnik
Lactec GmbH
Original Assignee
Lactec GmbH Gesellschaft fuer Moderne Lackiertechnik
Lactec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lactec GmbH Gesellschaft fuer Moderne Lackiertechnik, Lactec GmbH filed Critical Lactec GmbH Gesellschaft fuer Moderne Lackiertechnik
Publication of EP0935999A1 publication Critical patent/EP0935999A1/en
Withdrawn legal-status Critical Current

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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
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • 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
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1481—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air

Definitions

  • the invention relates to a method and a device for coating parts according to the preambles of the claims 1 and 4.
  • Methods and devices of the above Kind are z. B. from US-PS NO 4,311,724 known.
  • a Color change e.g. B. when painting the body one Motor vehicle, detergent and / or compressed air is in the given the paint to the line leading to the atomizer, so that at least parts of the residual paint are recycled can.
  • this method can be used in many cases do not carry out because the detergent or compressed air not physically separated as it would be required behind the paint column to be pushed out the feed line move, but when flowing through Mix with the paint material inside the atomizer. An exact determination of the still usable, in amount of paint in the feed line is therefore impossible so that for security reasons most of it the residual paint must be removed and disposed of unused.
  • the invention is therefore based on the object of measures provide a reliable separation between the coating agent still to be used and one this pushing means from the feed line can be achieved.
  • the invention provides the features of the characterizing part of claim 1 before that a separating element between the completion of the painting process the rest of the paint and the pushing agent into the feed line is introduced and that the separating element then before reaching of the atomizer removed from the feed line again becomes.
  • the device for performing this method comprises a color changer and an atomizer at the ends of one Feed line and provides according to the invention that the separating element in the supply line between a parking station and a collecting station is movable.
  • the separating element is in entered the feed line until it was in the collecting station arrives. There the separator is stopped while the Pushing means e.g. B. flows around the separating element and continues to flow to the atomizer to z. B. to clean.
  • the separating element is also made using detergent pressed from the rescue station back into the parking station and then there with the help of an adjustable Holding element fixed.
  • the invention is described below using an exemplary embodiment, which is shown in the single drawing described.
  • the drawing shows essentially a flow chart and only those parts and components, those immediately required to carry out the procedure are. It is understood that other components for Completion of a complete coating or painting system necessary and common and generally known are. These components are in the single drawing also not shown for reasons of clarity.
  • a device 1 for coating or painting comprises a color changer 2 according to the embodiment several lines 3, 4, 5 and 6 for different colors to lead.
  • Each of the lines 3 to 6 also belongs a control valve 7, the lines 3 to 6 optionally with a feed line 8 connects.
  • At the other end 9 of the feed line 8 is an atomizer 10 for the coating agent or arranged for the paint.
  • the feed line 8 In the area of the color changer 2 are on the feed line 8 also a detergent line 11 with check valve and Control valve and a compressed air line 12 with a check valve and control valve connected as the only figure shows.
  • the meter should change color also the coating material located in the feed line 8 or the paint located there in such a way be used as much as possible.
  • This is located directly at the outlet 13 of the feed line 8 from the color changer 2 a parking station 14 for a separating element 15, the before the end of the following basically only as Painting process called coating process in the Feed line 8 is inserted to ensure safe separation between paint and one to transport this To ensure residual paint serving sliding medium.
  • Sliding medium can either detergent from the detergent line 11 or compressed air from the compressed air line 12 serve after the respective associated valves accordingly have been switched.
  • the paint and the sliding medium the separating element 15 easily in the direction of the atomizer 10 flow around.
  • the separating element 15 moves through the feed line 8, until it reaches a collecting station 18.
  • the sanctuary 18 also has a chamber 19, the clear cross section is larger than the clear cross section of the feed line 8.
  • the clear cross-section of the Collection station 18 to the atomizer 10 leading piece 20 of the feed line 8 is less than the cross section of the Separating element 17, so that the separating element 17 is not in the Line piece 20 can occur.
  • Stop can be provided in the collecting station 18, to prevent the separating element 17 from moving further into Can move towards atomizer 10.
  • a device 21 Located behind the collecting station 15 in the direction of flow a device 21 with control valves 22 and Check valves 23 for a detergent line 24 or for a compressed air line 25.
  • control valves 22 detergent or compressed air can do more than just that Feed line 8 and all lying in the direction of flow Clean or apply components, but also that Separating element 15 can be used again in the Move back parking station 14 until there is a further movement in the direction of color changer 4 by a stop 26 is prevented.
  • a metering device 27 Located between the device 21 and the atomizer 10 finally a metering device 27 to the a bypass line 28 out with a control valve 29 is.
  • sensors 30 are arranged at the end of the feed line 8 be the separating element 15 during its movement detect and send a signal to the controller of the Give device 1.
  • the separating element 15th In order to ensure that the sensors 30 the separating element 15th also record reliably, expediently contains this a metallic core.
  • the separating element 15 largely dimensionally stable and can have sealing lips, to achieve the desired tightness.
  • the separator is therefore a relatively short, solid body that fits positively into the feed line 8. That body is largely dimensionally stable and represents a third element represents that as a separating element 14 between the paint and the Sliding or printing medium is arranged. Because of his Dimensional stability is able to transition the Prevent sliding medium in the residual paint.

Landscapes

  • Spray Control Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

To change a paint color, in a paint spraying assembly, a pig (15) with shape stability is inserted into the feed line (8) as a divider, with a positive fit in the feed line (8), between the remaining paint from the old charge and the compressed air and/or liquid used to flush it out. The pig (15) is removed from the feed line (8) before it reaches the spray nozzle (10). The pig (15) is returned to the start position, for removal. The pig has at least one core which can be detected by sensors (30).

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Beschichten von Teilen gemäß den Oberbegriffen der Ansprüche 1 und 4. Verfahren und Vorrichtungen der genannten Art sind z. B. aus der US-PS NO 4,311,724 bekannt. Vor einem Farbwechsel, z. B. beim Lackieren der Karosserie eines Kraftfahrzeuges, wird Spülmittel und/oder Druckluft in die den Lack zu dem Zerstäuber führenden Leitung gegeben, so daß zumindest noch Teile des Restlackes verwertet werden können. Dieses Verfahren läßt sich aber in vielen Fällen nicht durchführen, weil das Spülmittel bzw. die Druckluft nicht, wie es erforderlich wäre, physikalisch exakt getrennt hinter der herauszuschiebenden Lacksäule sich durch die Zuführleitung bewegen, sondern sich beim Durchströmen zum Zerstäuber mit dem darin befindlichen Lackmaterial vermischen. Eine exakte Bestimmung der noch verwertbaren, in der Zuführleitung befindlichen Lackmenge ist daher unmöglich, so daß aus Sicherheitsgründen doch der größte Teil des Restlackes ungenutzt entnommen und entsorgt werden muß.The invention relates to a method and a device for coating parts according to the preambles of the claims 1 and 4. Methods and devices of the above Kind are z. B. from US-PS NO 4,311,724 known. Before a Color change, e.g. B. when painting the body one Motor vehicle, detergent and / or compressed air is in the given the paint to the line leading to the atomizer, so that at least parts of the residual paint are recycled can. However, this method can be used in many cases do not carry out because the detergent or compressed air not physically separated as it would be required behind the paint column to be pushed out the feed line move, but when flowing through Mix with the paint material inside the atomizer. An exact determination of the still usable, in amount of paint in the feed line is therefore impossible so that for security reasons most of it the residual paint must be removed and disposed of unused.

Der Erfindung liegt daher die Aufgabe zugrunde, Maßnahmen vorzusehen, mit deren Hilfe sich eine zuverlässige Trennung zwischen dem noch zu nutzenden Beschichtungsmittel und einnem dieses aus der Zuführleitung drückenden Schiebemittels erreichen läßt.The invention is therefore based on the object of measures provide a reliable separation between the coating agent still to be used and one this pushing means from the feed line can be achieved.

Zur Lösung dieser Aufgabe sieht die Erfindung mit den Merkmalen des kennzeichnenden Teiles des Anspruches 1 vor, daß ein Trennelement vor Beendigung des Lackiervorganges zwischen den Restlack und das Schiebemittel in die Zuführleitung eingeführt wird und daß das Trennelement dann vor Erreichen des Zerstäubers wieder aus der Zuführleitung entnommen wird.To achieve this object, the invention provides the features of the characterizing part of claim 1 before that a separating element between the completion of the painting process the rest of the paint and the pushing agent into the feed line is introduced and that the separating element then before reaching of the atomizer removed from the feed line again becomes.

Durch Verwendung eines Trennelementes, das weitgehend formstabil gestaltet ist und sich dichtend zwischen Restlack und Schiebemittel durch die Zuführleitung bewegen läßt, wird eine in hohem Maße exakte Trennung zwischen noch verwertbarem Restlack und dem Schiebemedium erreicht, das in grundsätzlich bekannter Weise ein Spülmittel und/oder Druckluft bzw. pulsierend Spülmittel und Druckluft sein können. By using a separating element that is largely dimensionally stable is designed and sealed between residual paint and move the pushing means through the feed line, becomes a highly exact separation between still usable Residual paint and the sliding medium achieved in basically known way a detergent and / or Compressed air or pulsating detergent and compressed air can.

Die Vorrichtung zur Durchführung dieses Verfahrens umfaßt einen Farbwechsler und einen Zerstäuber an den Enden einer Zuführleitung und sieht erfindungsgemäß vor, daß das Trennelement in der Zuführleitung zwischen einer Parkstation und einer Auffangstation bewegbar ist.The device for performing this method comprises a color changer and an atomizer at the ends of one Feed line and provides according to the invention that the separating element in the supply line between a parking station and a collecting station is movable.

Sowohl die Parkstation als auch die Auffangstation stellen sicher, daß das Beschichtungsmittel bzw. der Lack ungehindert an dem Trennelement vorbeiströmen können, wenn dies erforderlich ist. Nur wenn das Beschichtungsmittel bzw. der Lack von dem Schiebemedium mit Druck beaufschlagt durch die Zuführleitung bewegt werden soll, wird das Trennelement in die Zuführleitung eingegeben, bis es in der Auffangstation ankommt. Dort wird das Trennelement angehalten, während das Schiebemittel z. B. um das Trennelement herum strömt und weiter bis zum Zerstäuber fließt, um diesen z. B. zu reinigen. Ebenfalls mit Hilfe von Spülmittel wird das Trennelement aus der Auffangstation wieder in die Parkstation zurückgedrückt und dann dort mit Hilfe eines verstellbaren Halteelementes fixiert.Place both the parking station and the rescue station sure that the coating agent or varnish is unimpeded can flow past the separator if this is required. Only if the coating agent or Lacquer from the sliding medium pressurized by the Feed line is to be moved, the separating element is in entered the feed line until it was in the collecting station arrives. There the separator is stopped while the Pushing means e.g. B. flows around the separating element and continues to flow to the atomizer to z. B. to clean. The separating element is also made using detergent pressed from the rescue station back into the parking station and then there with the help of an adjustable Holding element fixed.

Weitere Merkmale der Erfindung gehen aus der Beschreibung und den Ansprüchen im Zusammenhang mit der Zeichnung hervor.Further features of the invention emerge from the description and the claims in connection with the drawing.

Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles, das in der einzigen Zeichnung dargestellt ist, näher beschrieben. Die Zeichnung zeigt dabei im Wesentlichen ein Fließschema und nur diejenigen Bauteile und Komponenten, die zur Durchführung des Verfahrens unmittelbar erforderlich sind. Es versteht sich, daß weitere Komponenten zur Vervollständigung einer kompletten Beschichtungs- bzw. Lackieranlage notwendig und üblich sowie grundsätzlich bekannt sind. Diese Komponenten sind in der einzigen Zeichnung auch aus Gründen der Übersichtlichkeit nicht dargestellt.The invention is described below using an exemplary embodiment, which is shown in the single drawing described. The drawing shows essentially a flow chart and only those parts and components, those immediately required to carry out the procedure are. It is understood that other components for Completion of a complete coating or painting system necessary and common and generally known are. These components are in the single drawing also not shown for reasons of clarity.

Eine Vorrichtung 1 zum Beschichten bzw. Lackieren umfaßt gemäß Ausführungsbeispiel einen Farbwechsler 2, zu dem mehrere Leitungen 3, 4, 5 bzw. 6 für unterschiedliche Farben führen. Zu jeder der Leitungen 3 bis 6 gehört ferner ein Steuerventil 7, das die Leitungen 3 bis 6 wahlweise mit einer Zuführleitung 8 verbindet. Am anderen Ende 9 der Zuführleitung 8 ist ein Zerstäuber 10 für das Beschichtungsmittel bzw. für den Lack angeordnet.A device 1 for coating or painting comprises a color changer 2 according to the embodiment several lines 3, 4, 5 and 6 for different colors to lead. Each of the lines 3 to 6 also belongs a control valve 7, the lines 3 to 6 optionally with a feed line 8 connects. At the other end 9 of the feed line 8 is an atomizer 10 for the coating agent or arranged for the paint.

Im Bereich des Farbwechslers 2 sind an die Zuführleitung 8 ferner eine Spülmittelleitung 11 mit Rückschlagventil und Steuerventil und eine Druckluftleitung 12 mit Rückschlagventil und Steuerventil angeschlossen, wie die einzige Figur zeigt.In the area of the color changer 2 are on the feed line 8 also a detergent line 11 with check valve and Control valve and a compressed air line 12 with a check valve and control valve connected as the only figure shows.

Wenn der Abstand zwischen dem Farbwechsler 2 und dem Zerstäuber 10 relativ groß ist, das heißt z. B. mehr als einen Meter beträgt, soll gemäß der Erfindung bei einem Farbwechsel auch das in der Zuführleitung 8 befindliche Beschichtungsmaterial bzw. der dort befindlichen Lack in so hohem Maße wie möglich genutzt werden. Dazu befindet sich unmittelbar am Ausgang 13 der Zuführleitung 8 aus dem Farbwechsler 2 eine Parkstation 14 für ein Trennelement 15, das vor Beendigung des nachstehend grundsätzlich nur noch als Lackiervorgang bezeichneten Beschichtungsvorganges in die Zuführleitung 8 eingeführt wird, um eine sichere Trennung zwischen Lack und einem zum Weitertransportieren dieses Restlackes dienenden Schiebemediums zu gewährleisten. Als Schiebemedium kann dabei entweder Spülmittel aus der Spülmittelleitung 11 oder Druckluft aus der Druckluftleitung 12 dienen, nachdem die jeweils zugehörigen Ventile entsprechend geschaltet worden sind.If the distance between the color changer 2 and the atomizer 10 is relatively large, that is z. B. more than one According to the invention, the meter should change color also the coating material located in the feed line 8 or the paint located there in such a way be used as much as possible. This is located directly at the outlet 13 of the feed line 8 from the color changer 2 a parking station 14 for a separating element 15, the before the end of the following basically only as Painting process called coating process in the Feed line 8 is inserted to ensure safe separation between paint and one to transport this To ensure residual paint serving sliding medium. As Sliding medium can either detergent from the detergent line 11 or compressed air from the compressed air line 12 serve after the respective associated valves accordingly have been switched.

In der Parkstation 14 können der Lack und das Schiebemedium das Trennelement 15 problemlos in Richtung Zerstäuber 10 umströmen. Erreicht wird dies dadurch, daß der Querschnitt einer das Trennelement 15 aufnehmenden Kammer 16 größer ist als der lichte Querschnitt der Zuführleitung 8 und daß ein Halteelement 17 z. B. in Gestalt eines pneumatisch verschiebbaren Sperrbolzens das Trennelement 15 in der Kammer 16 fixiert. Wenn das Halteelement 17 das Trennelement 15 freigibt, wird es von dem aus dem Farbwechsler 2 kommenden Medium in die Zuführleitung 8 gedrückt.In the parking station 14, the paint and the sliding medium the separating element 15 easily in the direction of the atomizer 10 flow around. This is achieved in that the cross section a chamber 16 accommodating the separating element 15 is larger than the clear cross section of the feed line 8 and that a Holding element 17 z. B. in the form of a pneumatically movable Locking bolt the separating element 15 in the chamber 16 fixed. If the holding element 17 the separating element 15 releases it, it comes from the one coming from the color changer 2 Medium pressed into the feed line 8.

Das Trennelement 15 bewegt sich durch die Zuführleitung 8, bis es eine Auffangstation 18 erreicht. Die Auffangstation 18 weist ebenfalls eine Kammer 19 auf, deren lichter Querschnitt größer ist, als der lichte Querschnitt der Zuführleitung 8. Ferner ist der lichte Querschnitt des von der Auffangstation 18 zu dem Zerstäuber 10 führenden Stückes 20 der Zuführleitung 8 geringer als der Querschnitt des Trennelementes 17, so daß das Trennelement 17 nicht in das Leitungsstück 20 eintreten kann. Anstelle unterschiedlicher lichter Weiten bzw. Querschnitte kann aber auch ein beliebiger Anschlag in der Auffangstation 18 vorgesehen sein, um zu verhindern, daß sich das Trennelement 17 weiter in Richtung Zerstäuber 10 bewegen kann.The separating element 15 moves through the feed line 8, until it reaches a collecting station 18. The sanctuary 18 also has a chamber 19, the clear cross section is larger than the clear cross section of the feed line 8. Furthermore, the clear cross-section of the Collection station 18 to the atomizer 10 leading piece 20 of the feed line 8 is less than the cross section of the Separating element 17, so that the separating element 17 is not in the Line piece 20 can occur. Instead of different clear widths or cross sections can also be any Stop can be provided in the collecting station 18, to prevent the separating element 17 from moving further into Can move towards atomizer 10.

Es versteht sich schließlich, daß nur ein einziges Trennelement 15 vorgesehen ist und sich entweder in der Parkstation 14 oder in der Auffangstation 18 bzw. in der Zuführleitung 8 befindet. In der einzigen Figur ist nur zur Verdeutlichung der jeweiligen Situation das Trennelement 15 sowohl in der Parkstation 14 als auch in der Auffangstation 18 dargestellt.Finally, it is understood that only a single separator 15 is provided and either in the parking station 14 or in the collecting station 18 or in the feed line 8 is located. The only figure is for illustration only the separating element 15 of the respective situation both in the parking station 14 and in the reception station 18 shown.

In Strömungsrichtung hinter der Auffangstation 15 befindet sich noch eine Einrichtung 21 mit Steuerventilen 22 und Rückschlagventilen 23 für eine Spülmittelleitung 24 bzw. für eine Druckluftleitung 25. Durch Ansteuerung der Steuerventile 22 können Spülmittel oder Druckluft nicht nur die Zuführleitung 8 und alle in Strömungsrichtung liegenden Komponenten reinigen bzw. beaufschlagen, sondern auch das Trennelement 15 läßt sich mit ihrer Hilfe wieder in die Parkstation 14 zurückbewegen, bis es dort an einer Weiterbewegung in Richtung Farbwechsler 4 durch einen Anschlag 26 gehindert wird.Located behind the collecting station 15 in the direction of flow a device 21 with control valves 22 and Check valves 23 for a detergent line 24 or for a compressed air line 25. By controlling the control valves 22 detergent or compressed air can do more than just that Feed line 8 and all lying in the direction of flow Clean or apply components, but also that Separating element 15 can be used again in the Move back parking station 14 until there is a further movement in the direction of color changer 4 by a stop 26 is prevented.

Zwischen der Einrichtung 21 und dem Zerstäuber 10 befindet sich schließlich noch eine Dosiereinrichtung 27, um die eine Bypass-Leitung 28 mit einem Steuerventil 29 geführt ist.Located between the device 21 and the atomizer 10 finally a metering device 27 to the a bypass line 28 out with a control valve 29 is.

Zum Erkennen der Anwesenheit, der korrekten Fließrichtung und einer plausiblen Fließgeschwindigkeit können am Anfang und am Ende der Zuführleitung 8 jeweils Sensoren 30 angeordnet sein, die das Trennelement 15 während seiner Bewegung erfassen und ein Signal an die Steuereinrichtung der Vorrichtung 1 geben.To recognize the presence, the correct flow direction and a plausible flow rate can start and sensors 30 are arranged at the end of the feed line 8 be the separating element 15 during its movement detect and send a signal to the controller of the Give device 1.

Um zu erreichen, daß die Sensoren 30 das Trennelement 15 auch zuverlässig erfassen, enthält dieses zweckmäßigerweise einen metallischen Kern. Darüber hinaus ist das Trennelement 15 weitgehend formstabil und kann Dichtlippen aufweisen, um die angestrebte Dichtheit zu erreichen. Das Trennelement ist somit ein relativ kurzer, fester Körper, der formschlüssig in die Zuführleitung 8 paßt. Dieser Körper ist weitgehend formstabil und stellt ein drittes Element dar, das als Trennelement 14 zwischen dem Lack und dem Schiebe- oder Druckmedium angeordnet wird. Aufgrund seiner Formstabilität ist es in der Lage, einen Übergang des Schiebemediums in den Restlack zu verhindern.In order to ensure that the sensors 30 the separating element 15th also record reliably, expediently contains this a metallic core. In addition, the separating element 15 largely dimensionally stable and can have sealing lips, to achieve the desired tightness. The separator is therefore a relatively short, solid body that fits positively into the feed line 8. That body is largely dimensionally stable and represents a third element represents that as a separating element 14 between the paint and the Sliding or printing medium is arranged. Because of his Dimensional stability is able to transition the Prevent sliding medium in the residual paint.

Claims (10)

Verfahren zum Wechseln eines Beschichtungsmittels, insbesondere eines Lackes in einer von einem Farbwechsler (4) zu einem Zerstäuber (10) führenden Zuführleitung (8) einer Vorrichtung (1) zum Lackieren, die ferner an Leitungen (11, 24) für ein Spülmittel und/oder an Leitungen (12, 25) für Druckluft angeschlossen ist, dadurch gekennzeichnet, daß ein weitgehend formstabiles Element in der Zuführleitung (8) als Trennelement (15) zwischen dem Beschichtungsmittel und einem dieses mit Druck beaufschlagenden, gasförmigen und/oder flüssigen Schiebemittel angeordnet und vor Erreichen des Zerstäubers (10) wieder aus der Zuführleitung (8) herausgenommen wird.Process for changing a coating agent, in particular of a paint in one of a color changer (4) to a feed line leading to an atomizer (10) (8) a device (1) for painting, the further on Lines (11, 24) for a detergent and / or on lines (12, 25) for compressed air, thereby characterized that a largely dimensionally stable Element in the feed line (8) as a separating element (15) between the coating agent and one of these Pressurizing, gaseous and / or liquid Sliding means arranged and before reaching the atomizer (10) removed from the feed line (8) becomes. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Trennelement (15) zum Erreichen seiner Ausgangslage wieder durch die Zuführleitung (8) zurückbewegt wird.A method according to claim 1, characterized in that the separating element (15) to reach its initial position is moved back through the feed line (8). Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein Trennelement (15) derart verwendet wird, daß es sich formschlüssig und weitgehend dichtend in der Zuführleitung (8) bewegen läßt.A method according to claim 1, characterized in that a separating element (15) is used such that it form-fitting and largely sealing in the feed line (8) can move. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 und 2 mit einem Farbwechsler (2) und mit einem Zerstäuber (10) an den Enden einer Zuführleitung (8), dadurch gekennzeichnet, daß ein Trennelement (15) in der Zuführleitung (8) zwischen einer Parkstation (14) und einer Auffangstation (18) mit Hilfe eines Schiebemittels bewegbar ist.Device for performing the method according to claim 1 and 2 with a color changer (2) and with a Atomizers (10) at the ends of a feed line (8), characterized in that a separating element (15) in the feed line (8) between a parking station (14) and a collecting station (18) with the help of a Slide means is movable. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß in der Parkstation (14) dem Trennelement (15) ein Anschlag (26) in Richtung Farbwechsler (2) und ein bewegbares Halteelement (17) zum Halten und Freigeben in Richtung Zerstäuber (10) zugeordnet sind.Device according to claim 4, characterized in that in the parking station (14) the separating element (15) Stop (26) towards the color changer (2) and a movable one Holding element (17) for holding and releasing in Direction atomizer (10) are assigned. Vorrichtung nach Anspruch 4 und/oder 5, dadurch gekennzeichnet, daß die Auffangstation (18) nur einen Anschlag für das Trennelement (14) in Richtung Zerstäuber (10) aufweist.Device according to claim 4 and / or 5, characterized in that that the collecting station (18) has only one stop for the separating element (14) in the direction of the atomizer (10). Vorrichtung nach mindestens einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, daß das Trennelement (14) mindestens einen Kern derart aufweist, daß es mit Hilfe von Sensoren (30) erfaßbar ist.Device according to at least one of the preceding Device claims, characterized in that the Separating element (14) has at least one core in such a way that it can be detected with the aid of sensors (30). Vorrichtung nach mindestens einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, daß eine Dosiereinrichtung (27) mit einer ein Steuerventil (29) aufweisenden Bypass-Leitung (28) in Strömungsrichtung unmittelbar vor dem Zerstäuber (10) sowie in Strömungsrichtung hinter einer Einrichtung (21) für Steuerventile (22, 23) von einer Spülmittelleitung (24) und einer Druckluftleitung (25) angeordnet ist, die wiederum in Strömungsrichtung hinter der Auffangstation (18) angeordnet ist.Device according to at least one of the preceding Device claims, characterized in that a Dosing device (27) with a control valve (29) having bypass line (28) in the flow direction immediately in front of the atomizer (10) and in the direction of flow behind a device (21) for control valves (22, 23) from a detergent line (24) and a compressed air line (25) is arranged, which in turn in the direction of flow behind the collecting station (18) is arranged. Vorrichtung nach mindestens einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, daß die Sensoren (30) und Ventile (7, 22) der Lack führenden Leitungen (3, 4, 5, 6, 8) und der Spülmittel und/oder Druckluft führenden Leitungen (11, 12, 24, 25) an eine gemeinsame Steuereinrichtung angeschlossen sind.Device according to at least one of the preceding Device claims, characterized in that the Sensors (30) and valves (7, 22) of the paint leading Lines (3, 4, 5, 6, 8) and the detergent and / or Compressed air lines (11, 12, 24, 25) to one common control device are connected. Trennelement für einen Farbwechsel zur Durchführung des Verfahrens nach Anspruch 1 in einer Vorrichtung (1) zum Lackieren, dadurch gekennzeichnet, daß es weitgehend formstabil und derart gestaltet ist, daß es formschlüssig sowie dichtend in der Zuführleitung (8) zwischen Farbwechsler (2) und Zerstäuber (10) bewegbar ist.Separating element for a color change to carry out the Method according to Claim 1 in a device (1) for Painting, characterized in that it is largely dimensionally stable and designed so that it is form-fitting and sealing in the feed line (8) between Color changer (2) and atomizer (10) movable is.
EP99101968A 1998-02-13 1999-02-01 Method and system for colour change in a coating installation using a pig Withdrawn EP0935999A1 (en)

Applications Claiming Priority (2)

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DE19805938 1998-02-13
DE19805938A DE19805938A1 (en) 1998-02-13 1998-02-13 Method and device for coating parts

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EP0935999A1 true EP0935999A1 (en) 1999-08-18

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US (1) US6090450A (en)
EP (1) EP0935999A1 (en)
JP (1) JPH11267563A (en)
CA (1) CA2258195A1 (en)
DE (1) DE19805938A1 (en)

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Also Published As

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DE19805938A1 (en) 1999-08-19
JPH11267563A (en) 1999-10-05
US6090450A (en) 2000-07-18
CA2258195A1 (en) 1999-08-13

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