EP0662355B1 - Verfahren zur Verbesserung des Aussehens eines mit einer Lackfarbe überzogenen Gegenstands und Vorrichtung zur Durchfürung dieses Verfahrens - Google Patents

Verfahren zur Verbesserung des Aussehens eines mit einer Lackfarbe überzogenen Gegenstands und Vorrichtung zur Durchfürung dieses Verfahrens Download PDF

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Publication number
EP0662355B1
EP0662355B1 EP19940402898 EP94402898A EP0662355B1 EP 0662355 B1 EP0662355 B1 EP 0662355B1 EP 19940402898 EP19940402898 EP 19940402898 EP 94402898 A EP94402898 A EP 94402898A EP 0662355 B1 EP0662355 B1 EP 0662355B1
Authority
EP
European Patent Office
Prior art keywords
treated
transducers
ultrasound
coating
finishing 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.)
Expired - Lifetime
Application number
EP19940402898
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English (en)
French (fr)
Other versions
EP0662355A1 (de
Inventor
Laurent Duhem
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0662355A1 publication Critical patent/EP0662355A1/de
Application granted granted Critical
Publication of EP0662355B1 publication Critical patent/EP0662355B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007—After-treatment

Definitions

  • the subject of the invention is a method of coating the surface. of an object by a film of stretched paint, generally glossy.
  • document DE-A-1 206 695 teaches a method of preparation of metallic coating having a determined roughness. This process characterized by the application of high vibrations frequencies in the field of ultrasound at the coating layer at the plastic state, so that the surface deformations due to vibrations are obtained permanently.
  • the purpose of this the invention is the improvement of the visual appearance of a coating or finishing paint applied on metal support ferrous or non-ferrous, plastic or composite materials.
  • metal or plastic support we must understand the nature of the main room which receives all the layers of finishes, whether pre-coated with one or more thin layers of natures other than support for metal parts, whether of composite materials plastics or fiberglass injected or pressed.
  • the method according to the invention improves the appearance of the film of paint obtained after cooking, while overcoming the disadvantages cited above.
  • the main object of the present invention is therefore a method of coating a surface with a finishing paint to improve the appearance given by the outermost layer comprising the steps following where we apply on this surface in a usual way a finishing paint, we carry out the usual operations ensuring or accelerating the crosslinking of the coating, characterized in that the paint finishing consists of a film comprising at least two layers, the entire said surface being treated before the crosslinking begins finish paint by ultrasonic radiation, whereby the outermost layer has a taut appearance.
  • a mechanical action is exerted on the film. painting, between the application of the product on the object to be painted and the start of crosslinking by subjecting it to ultrasonic radiation.
  • the low frequencies of the spectrum are used ultrasonic.
  • the layer final can be a varnish.
  • a device for implementing a method in accordance with the invention comprises a plurality of ultrasonic transducers arranged substantially equidistant from the surface to be treated and emitting towards this surface.
  • such a device will include handling means supporting the object to be treated and ensuring regular scrolling movement of this object in relation to transducers.
  • transducers are arranged on supports each partially enveloping the object to be painted according to slices perpendicular to the direction of the scrolling movement.
  • the supports include means allowing their translation in a direction perpendicular to the direction of travel and to the surface of the object to be deal in relation to which they are located, so as to maintain substantially constant the distance between the transducers they carry and the corresponding surface of the object to be treated.
  • the supports can be produced in the form of boxes parallelepiped each arranged parallel to the mean plane of a face of the object to be treated.
  • the objects to be painted are crates of motor vehicles.
  • the device 2 allowing the implementation of the method according to the invention fits into a classic industrial painting installation between a booth 1 application of a final layer, for example a varnish, and a tunnel firing 3, where the crosslinking of the applied product takes place.
  • the treated bodies 4 are fixed ( Figure 3) on trolleys handling 5 which move continuously, in the direction of arrows F, from cabin 1 to tunnel 3 by crossing device 2 according to a regular movement.
  • the device 2 essentially consists ( Figure 4) of a plurality of ultrasonic transducers or transmitters T1, T2, T3 ... emitting in continuous a beam of ultrasonic waves towards the surface of the body.
  • the transmitting antennas or organs of these transducers are arranged in such a way that the acoustic density exerts on the film paint a mechanical effect uniformly distributed over the entire surface whose appearance we want to improve.
  • the transducers are distributed over the surfaces of frames or boxes 6 to 10 enveloping the side and top parts of the body 4.
  • Each frame 6 to 10 further comprises means 61 to 101 allowing to maintain a constant distance between the antennas of transducers and the surface to be treated.
  • These means for example jacks, translate the frames in both directions in one direction substantially perpendicular to the body part arranged opposite (arrows f).
  • two frames 6,7 and 8,9 are arranged vertically symmetrically opposite the side panels of the bodywork which precisely constitute the most demanding areas from the point of view of visual appearance.
  • At least one frame 10 is arranged horizontally, facing the horizontal upper parts (hood and roof), it has a greater amplitude of translation to overcome the jump formed by the windshield bay.
  • Racks 6 to 10 somehow envelop the object to be painted in slices perpendicular to the direction of movement of scrolling according to arrow F.
  • the emitting faces of frames 6 to 10 are represented planar, they could of course be of concave shape for better wrap the object to be treated.
  • the transducers T1, T2, T3 ... can be magnetostrictive types or piezoelectric and are used at the low end of the frequency spectrum ultrasound.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)

Claims (11)

  1. Verfahren zum Überziehen einer Oberfläche mit einer Endlackierung zur Verbesserung des Aussehens der äußersten Schicht, das die folgenden Schritte aufweist, bei denen auf diese Oberfläche in üblicher Weise eine Endlackierung aufgebracht wird, die üblichen Arbeitsgänge der Gewährleistung oder Beschleunigung der Vernetzung des Überzugs durchgeführt werden, dadurch gekennzeichnet, daß die Endlackierung aus einem Film besteht, der mindestens zwei Schichten aufweist, wobei die Gesamtheit der Oberfläche vor dem Beginn der Vernetzung der Endlackierung mit einer Ultraschallstrahlung behandelt wird, wodurch die äußerste Schicht ein glattes Aussehen aufweist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die akustische Dichte der Ultraschallstrahlung gleichmäßig über die Gesamtheit der Oberfläche verteilt wird, deren Aussehen verbessert werden soll.
  3. Verfahren nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die niederen Frequenzen des Ultraschallspektrums verwendet werden.
  4. Verfahren nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Überzug mehrere Schichten aufweist.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Endschicht ein Lack ist.
  6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Ultraschallstrahlung mittels einer Vorrichtung durchgeführt wird, die mehrere Ultraschallwandler (T1, T2, T3, ...) aufweist, die im wesentlichen in gleichem Abstand von der zu behandelnden Oberfläche (4) angeordnet sind und in Richtung dieser Oberfläche aussenden.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß es Transportmittel (5) aufweist, die den zu behandelnden Gegenstand (4) tragen und eine regelmäßige Durchlaufbewegung dieses Gegenstands in Bezug auf die Wandler (T1, T2, T3, ...) gewährleisten.
  8. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Wandler (T1, T2, T3, ...) auf Trägern (6-10) angeordnet sind, die jeweils den zu lackierenden Gegenstand (4) gemäß senkrecht zur Richtung (F) der Durchlaufbewegung verlaufenden Abschnitten teilweise umgeben.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die Träger (6-10) Mittel (61-101) aufweisen, die ihre Verschiebung gemäß einer Richtung (f) senkrecht zur Durchlaufrichtung (F) und zur Oberfläche des zu behandelnden Gegenstand (4) ermöglichen, gegenüber der sie sich befinden, um den Abstand zwischen den auf ihnen angeordneten Wandlern (T1, T2, T3, ...) und der entsprechenden Oberfläche des zu behandelnden Gegenstands im wesentlichen konstant zu halten.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die Träger in Form von parallelepipedischen Kästen (6-10) hergestellt werden, die je parallel zur Mittelebene einer Fläche des zu behandelnden Gegenstands (4) angeordnet sind.
  11. Verfahren nach Anspruch 10 zur Behandlung einer Kraftfahrzeugkarosserie, dadurch gekennzeichnet, daß es seitliche Tragelemente oder Kästen (6, 7; 8, 9), die senkrecht und symmetrisch vor den Seitenblechen der Karosserie angeordnet sind, und mindestens ein Tragelement oder Kasten (10) aufweist, das waagrecht vor dem oberen Bereich der Karosserie angeordnet ist.
EP19940402898 1994-01-07 1994-12-16 Verfahren zur Verbesserung des Aussehens eines mit einer Lackfarbe überzogenen Gegenstands und Vorrichtung zur Durchfürung dieses Verfahrens Expired - Lifetime EP0662355B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400102A FR2714854B1 (fr) 1994-01-07 1994-01-07 Procédé destiné à améliorer l'aspect visuel d'un objet revêtu d'une peinture et dispositif pour mettre en Óoeuvre ce procédé.
FR9400102 1994-01-07

Publications (2)

Publication Number Publication Date
EP0662355A1 EP0662355A1 (de) 1995-07-12
EP0662355B1 true EP0662355B1 (de) 2000-11-08

Family

ID=9458824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940402898 Expired - Lifetime EP0662355B1 (de) 1994-01-07 1994-12-16 Verfahren zur Verbesserung des Aussehens eines mit einer Lackfarbe überzogenen Gegenstands und Vorrichtung zur Durchfürung dieses Verfahrens

Country Status (4)

Country Link
EP (1) EP0662355B1 (de)
DE (1) DE69426257T2 (de)
ES (1) ES2151536T3 (de)
FR (1) FR2714854B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10003227B8 (de) * 2000-01-26 2009-08-06 Volkswagen Ag Verfahren zum Reinigen und Lackieren von Separatteilen von Kraftfahrzeugen und Vorrichtung zur Durchführung des Verfahrens
DE10025768B4 (de) * 2000-05-26 2009-06-25 Volkswagen Ag Verfahren zur Herstellung einer Mehrschichtlackierung, insbesondere einer Fahrzeugkarosserie oder eines Teiles davon
US6932869B2 (en) 2001-11-15 2005-08-23 Alcatel UV-cure of coating for optical fiber assisted by ultrasound
FI20205997A1 (fi) * 2020-10-12 2022-04-13 Enekos Oy Menetelmä tarttuvien massojen käsittelemiseksi

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1042012A (fr) * 1951-04-26 1953-10-28 Siemens Ag Procédé pour appliquer un revêtement sur un corps
DE1206695B (de) * 1959-05-14 1965-12-09 Stahl Und Walzwerke Rasselstei Verfahren zum Herstellen von metallischen UEberzuegen, gegebenenfalls auch Lack- und Kunststoffueberzuegen, mit einer bestimmten Oberflaechenrauhigkeit, insbesondere aufMetallbaendern und -blechen
GB1394653A (en) * 1973-01-29 1975-05-21 Bertrand F R Technique for treating animate or inanimate objects by sound

Also Published As

Publication number Publication date
EP0662355A1 (de) 1995-07-12
FR2714854B1 (fr) 1996-02-16
DE69426257D1 (de) 2000-12-14
FR2714854A1 (fr) 1995-07-13
DE69426257T2 (de) 2001-03-15
ES2151536T3 (es) 2001-01-01

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