EP0695582B1 - Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide - Google Patents

Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide Download PDF

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Publication number
EP0695582B1
EP0695582B1 EP94109125A EP94109125A EP0695582B1 EP 0695582 B1 EP0695582 B1 EP 0695582B1 EP 94109125 A EP94109125 A EP 94109125A EP 94109125 A EP94109125 A EP 94109125A EP 0695582 B1 EP0695582 B1 EP 0695582B1
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EP
European Patent Office
Prior art keywords
air
spray cone
directed
accordance
bell
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
EP94109125A
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German (de)
English (en)
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EP0695582A1 (fr
Inventor
Friedrich-Wilhelmdr. Behrens
Christian Voye
Uwe Hornig
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.)
Inpro Innovationsgesellschaft fuer Fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH
Original Assignee
Inpro Innovationsgesellschaft fuer Fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH
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 Inpro Innovationsgesellschaft fuer Fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH filed Critical Inpro Innovationsgesellschaft fuer Fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH
Priority to EP94109125A priority Critical patent/EP0695582B1/fr
Priority to DE59408862T priority patent/DE59408862D1/de
Publication of EP0695582A1 publication Critical patent/EP0695582A1/fr
Application granted granted Critical
Publication of EP0695582B1 publication Critical patent/EP0695582B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0426—Means for supplying shaping gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1064—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1092—Means for supplying shaping gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • 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
    • B05D3/04—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 by exposure to gases
    • B05D3/0406—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 by exposure to gases the gas being air
    • B05D3/042—Directing or stopping the fluid to be coated with air

Definitions

  • the invention relates to a method for electrostatic and / or pneumatic application of liquid coating agents on conductive substrates, in particular from Metallic basecoats on automotive components, in which the liquid Paint to produce a spray cone on the substrate electrostatically and / or pneumatically sprayed and Air flows directed parallel to the surface of the spray cone be generated.
  • the invention further relates to a device for electrostatic Application of liquid coating agents conductive substrates, especially metallic basecoats on automotive components, with one connected as an electrode High-speed rotary atomizer bell, from one to the substrate directed bell-like paint spray cone can be generated, switched with additional electrodes or as an electrode High-speed rotary atomizer bell and with the high-speed rotary atomizer bell arranged compressed air nozzles for generation of directed parallel to the surface of the spray cone Air flows (steering air), the high-rotation atomizer bell and the substrate is movable relative to one another.
  • the invention further relates to a device for pneumatic Application of liquid coating agents conductive substrates, especially metallic basecoats on automotive components, with an electrostatic device having pneumatic atomizer, from its horn air a paint spray cone directed towards the substrate can be generated, and with compressed air nozzles arranged on the pneumatic atomizer to generate the surface of the spray cone parallel, directed air flows, with the pneumatic atomizer and the substrate is movable relative to one another are.
  • Liquid coating agents can be of various types and Way to be applied to substrates. That's how it is applied generally thin coating agents, such as liquid paints by spraying onto a surface to be coated Well known substrate.
  • This is pneumatic Manner, e.g. with compressed air, the liquid paint through on the nozzle to be painted is finely atomized and sprayed on the object.
  • This method yields a directed flow of the paint particles on the Substrate surface, with the larger paint particles knock down on the surface and form a lacquer film.
  • the air used for spraying must be on the side of drain off the substrate and leads to very finely divided paint particles past the substrate into the surrounding airspace.
  • This paint mist is called overspray. He can ever after the choice of the process parameters considerable amounts of sprayed paint material include, for example between 40 and 90%. This overspray portion has to be absorbed in a complex manner and be disposed of.
  • EP-A-216 173 device of the type mentioned electrostatic application of liquid coating media to conductive substrates is one as an electrode switched atomizer head, inside which the coating agent is supplied is drivingly coupled with a turbine air jet engine. By centrifugal force the coating agent is transported outside to the edge of the atomizer head and atomized there into a multitude of fine droplet threads.
  • the switched as an electrode The atomizer head charges the resulting mist of the coating agent by means of electrical voltage electrostatically, the substrate to be coated acting as a counter electrode.
  • At least one compressed air nozzle is arranged on each side of the atomizer head Generate droplets of the spray cone to direct air streams to the substrate.
  • Spray cone is rotationally symmetrical and consists of mist from the coating agent on the jacket and is practically low on the inside.
  • Avoiding negative pressure can, if necessary, lead air into the interior of the spray cone become.
  • the paint particles in this case are directed onto the substrate by the electric field lines. By this process can achieve a high degree of separation of the paint.
  • the overspray portion is only up to 40%. However, this share is still to be absorbed and closed to dispose.
  • the air supply nozzles around the rotary bell for The spray cone is generally ring-shaped.
  • a nozzle as a ring around the Atomizer device attached This nozzle is intended for air supply for swirling cleaning fluid serve when changing the paint.
  • the nozzle envelops the spray element Completely.
  • the invention has for its object a method and a device for electrostatic and / or pneumatic Application of coating liquids according to of the type mentioned at the beginning, with the one or the reduced compared to the prior art Proportion of overspray generated is the number of layers of the same coating agent can be reduced. Especially should apply when applying a coating agent on the Basis of effect paints when producing only a small one Overspray share a good training of the effect, e.g. of Metallic effect can be achieved.
  • the one or more essentially semicircular around the high-speed rotary atomizer bell arranged nozzles each have an air flow against the Straighten and distract generated paint spray cone and the substrate to be coated being on the side of the high-speed rotary atomizer bell, the opposite to the semicircular arranged nozzles is corresponding to the latter Side of the high-speed rotary atomizer bell moved becomes.
  • the method according to the invention it becomes rotationally symmetrical generated paint mist bell from one side or more directed air jets and the Shape of the paint mist bell changed asymmetrically.
  • the air vents are arranged on one side around the rotating bell, in particular, they can be part-circular around the rotary bell be arranged, e.g. semicircular. Is preferred it is possible to provide several rows of nozzles. The rows of nozzles are in contrast to the enveloping air jacket of the rotating bell not parallel to the surface of the rotating bell aligned, but they point inclined to that Inside the spray bell. Through the generated additional air flows it is possible to use the spray bell asymmetrical e.g. deform egg-shaped.
  • the finer paint mist particles are deflected more than the coarser particles, so that a deformation of the spray pattern so it is done on the opposite of the air nozzles lying side preferably deposited finer paint droplets be while on the side of the additional Air supply preferentially separated coarser droplets become.
  • the additional air flow increases the velocity component of the drops on the workpiece there.
  • the strength of the air flow from a nozzle depend on the location of the air nozzle. In particular, should the airflow in the middle of the semicircular arrangement be the strongest. It is also possible to change the direction the air nozzle depending on the position of the nozzle the semicircular ring. It is preferred that the angle of the additional air nozzle on the paint spray bell is more inclined in the middle of the semicircle than on the edges. With these two measures, one targeted alignment of the spray cone can be achieved.
  • the direction of movement has to be such that in operation the outer air nozzles first the finer Get droplets on the substrate and then the coarser ones Paint droplets.
  • the movement should be as even as possible. she can can be generated by known methods.
  • the substrate can be guided past solid spray elements on the other hand it is also possible to use the Spray organs e.g. computer controlled on the to be coated Bring the substrate past. Procedures for this are in the Technology generally known.
  • Coating agents are known in principle. It is a matter of the usual coating agents based on solvent-based, but especially of aqueous coating media.
  • the viscosity of the coating agent is the spraying organ customized. This can be done by known measures, e.g. Dilute with water or solvent or by changing the temperature happen.
  • the coating agents can be so-called Trade fillers, basecoats or clearcoats.
  • the substrates to be coated are all conductive Suitable objects that either have an intrinsic conductivity own or with a conductive coating have been.
  • Examples of such substrates are conductive plastics, metals, especially iron, aluminum or magnesium. If necessary, a mixed construction of the substrate.
  • the method according to the invention is suitable for spray application various coating agents.
  • various coating agents In particular it is in the Multi-layer painting in the automotive or automotive supply industry used.
  • the advantage is that with the inventive method a constant order picture of to be applied coating agent is obtained because only low air vortices arise and only a reduced amount of overspray portion of the paint.
  • the overspray portion by the inventive method reduced to less than 30% of the paint material used become. Because of the increased amount applied, it is if possible, the number of coats of one Reduce paint layer. The reduced overspray content is less likely to contaminate the paint booth or the substrate.
  • the method according to the invention enables the use of effect paints, in particular metallic effect paints achieving excellent effects training, e.g. excellent metallic effects training.
  • This excellent metallic effect is with conventional ones Procedures only with a significantly higher one Obtain share of overspray.
  • an additional supply of air into the interior of the Paint fog bell provided that a device for Control of the corresponding air flow has. This facility ensures that the airflow is only so strong that there is no negative pressure in the middle of the paint mist bell and a pulsation of the bell shape is avoided.
  • the device has at least one prefers several additional nozzles on one Side of the device, preferably part-circular around the Rotation bell are arranged. If necessary, the included angles can also be selected larger than 180 °, for a half-sided complete wrapping and To deflect the spray cone.
  • the nozzles are open align the spray cone and deflect it. It can also use multiple semicircular sets of air jets be provided. The air nozzles are fixed to the device attached, they do not rotate with the rotating bell.
  • nozzles can be used, e.g. point-shaped nozzles, slit-shaped nozzles or semi-circular ones Nozzles.
  • At the air supply for the nozzles to provide a control device with which the air speed and the amount of air can be affected. These parameters depend on the shape of the paint mist bell dependent. The person skilled in the art can use them in a few experiments determine the spray pattern.
  • the inner and outer air supply i.e. the air supply outside of the high-speed rotary atomizer bell arranged on one side Air nozzles and the air supply to the interior of the high-speed rotary atomizer bell are combined and can be easily be carried out simultaneously.
  • the device for electrostatic Apply coating liquids on a conductive substrate 1 a high-speed rotary atomizer bell 2, which is connected as an electrode and a Has suspension in which a paint supply 4 is provided is.
  • a high-speed rotary atomizer bell 2 On the jacket of the high-speed rotary atomizer bell 2 furthermore an annular nozzle 3 for generating from the surface of the spray cone 8 parallel, directed air flows.
  • Air is supplied within the spray cone 8 can. Outside of the high-speed rotary atomizer bell 2 on one side inclined additional air nozzles 5 with Supply lines 6 arranged.
  • outside air nozzles 5 are stationary relative to the high-speed rotary atomizer bell 2 arranged, i.e. they do not rotate with the latter.
  • the additional air nozzles 5 are against the spray cone 8 directed by the exiting from the air nozzles 5 directed air flows receives the asymmetrical shape 7.
  • Fig. 2 shows a plan view of an embodiment of the Device in which a circular ring nozzle 5 outside the high-speed rotary atomizer bell 2 on one side is provided.
  • FIG 3 shows a further embodiment of the device with two outside of the high-speed rotary atomizer bell 2 the different sets of Air nozzles 5a, 5b.
  • These air nozzles 5a, 5b can be dependent from their position to the rotating bell be inclined and different amounts of air submit. For example, slot and round nozzles be provided.
  • FIGS. 1 to 4 The respectively required common supply, control and fastening devices are shown in FIGS. 1 to 4 not shown.
  • FIG. 5 shows an alternative device according to the invention with a pneumatic atomizer having a housing 12 9, one directed towards the substrate 1 Spray cone 11 generated.
  • Air nozzles 13 come to the surface of the spray cone 11 parallel, directed air flows to limit the spray out.
  • Outside of the pneumatic atomizer 9, 6 illustrates, on one side at least an additional air nozzle 10 stationary with respect to the Pneumatic atomizer 9 arranged in such a way to the spray cone axis 14 is inclined that the spray cone through the Air flow 15 emerging from the additional air nozzle 10 is deformable into an asymmetrical spray cone 11.
  • the Paint supply 16 and the supply for the atomizing air 17 of the pneumatic atomizer 9, as shown in FIG. 6, provided centrally in the housing 12.
  • the substrate 1 and the Pneumatic atomizers 9 can be moved relative to one another.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Claims (18)

  1. Procédé de revêtement électrostatique et/ou pneumatique de substrats conducteurs (1) par des produits de revêtement liquides, tout particulièrement de peintures métallisées vernies de base sur des pièces d'automobile lors duquel la peinture liquide est pulvérisée eléctrostatiquement et/ou pneumatiquement sur le substrat (1) en produisant un cône de pulvérisation (8) et en produisdant des courants d'air directifs parallèles au cône de pulvérisation (8), caractérisé par le fait que unilatéralément par dehors du cône de pulvérisation (8) au moins un courant d'air directif additionnel est appliqué sur le cône de pulvérisation (8) moyennant une tuyère (5/10) disposée stationnairement par rapport au cône de pulvérisation (8) et qu'une forme asymétrique (7/11a) de ce dernier est produit par une telle déformation de l'image de pulvérisation que sur le côté opposé (7b) au courant d'air directif additionnel de l'image de pulvérisation (7/11) et sur le côté voisin (7a) de l'image de pulvérisation (7) des gouttelettes de peinture plus fines ou plus grosses sont en essentiel précipitées sur le substrat (1) et que le substrat à revêtir ou à peinturer (1) est agité relativement au cône de pulvérisation déformé asymétriquement (7/11a) de sorte que d'abord les gouttelettes de peinture plus fines sont précipitées sur le substrat (1) et ensuite sur ces dernières les gouttelettes plus grosses.
  2. Procédé suivant revendication 1, caractérisé par le fait que le cône de pulvérisation (8) est déformé ovalement.
  3. Procédé suivant revendication 1 ou 2, caractérisé par le fait que de l'un côté du cône de pulvérisation (8) plusieurs courants d'air additionnels (15) ajustés inclinés par rapport à l'axe du cône de pulvérisation (14) sont appliqués par dehors sur le cône de pulvérisation (8) en vue d'une déformation asymétrique de ce dernier.
  4. Procédé suivant une des revendications précédentes, caractérisé par le fait que les points de départ (5/10) des courants d'air directifs (15) sont par rapport au cône de pulvérisation (8) disposés unilatéralement en demi-cercle.
  5. Procédé suivant revendication 4, caractérisé par le fait que les points de départ (5/10) des courants d'air directifs (15) sont par rapport au cône de pulvérisation (8) disposés unilatéralement en plusieurs plans.
  6. Procédé suivant revendications 4 et 5, caractérisé par le fait que les points de départ (5/10) des courants d'air directifs (15) sont disposés radialement les uns par rapport aux autres à différente distance.
  7. Procédé suivant revendication 4, 5 ou 6, caractérisé par le fait que l'ajustement angulaire de chaque courant d'air directif additionnel (15) par rapport à l'axe (14) du cône de pulvérisation (8) est choisi en fonction de la position du point de départ (5/10) de ce courant d'air directif (15) dans la disposition en demi-cercle des points de départ (5/10) de la multitude des courants d'air directifs (15).
  8. Procédé suivant revendication 7, caractérisé par le fait que le courant d'air directif (15), dont le point de départ (5/10) se trouve au centre de la disposition en demi-cercle des points de depart (5/10) de la multitude des courants d'air directifs (15), sur le cône de pulvérisation (8) est incliné plus fort que les courants d'air directifs (15), dont le point de départ (5/10) se trouve respectivement au bord de la disposition en demi-cercle des points de départ (5/10) de la multitude des courants d'air directifs (15).
  9. Procédé suivant une des revendications précédentes, caractérisé par le fait qu'un courant d'air dirigé (17) est introduit à l'intérieur du cône de pulvérisation (8).
  10. Dispositif de revêtement électrostatique de substrats conducteurs (1) par des produits de revêtement liquides, tout particulièrement de peintures métallisée vernies de base sur des pièces d'automobiles, avec une cloche de pulvérisateur à haute rotation (2) coupée comme électrode pouvant produire un cône de plulvérisation (8) en forme de cloche dirigée vers le substrat (1) avec des électrodes additionnelles ou une cloche de pulvérisateur à haute rotation (2) couplée comme électrode et avec des tuyères à air comprimé (13) disposées à la cloche de pulvérisateur à haute rotation (2) pour produire des courants d'air directifs (air de direction) parallèles à la surface du cône de pulvérisation (8), la cloche de pulvérisateur à haute rotation (2) et le substrat (1) pouvant être déplacés relativement l'un par rapport à l'autre, caractérisé par le fait qu'à l'extérieur de la cloche de pulvérisateur à haute rotation (2) sur l'un de ses côtés au moins une tuyère d'air (5) connectée à une amenée d'air comprimé (6) est disposée stationnairement par rapport à la cloche de pulvérisateur à haute rotation (2) et inclinée contre le cône de brouillard de peinture (8) en forme de cloche produit par celle-ci est ajustée de manière que le cône de pulvérisation de peinture (8) peut être déformé asymétriquement par un courant d'air comprimé sortant de la tuyère d'air (5).
  11. Dispositif de revêtement pneumatique de substrats conducteurs (1) par des produits de revêtement liquides, tout particulièrement de peintures métallisées vernies de base pour des pièces d'automobile, avec un pulvérisateur pneumatique (9) équipé d'un dispositif électrostatique par l'air à cornet duquel un cône de pulvérisation de peinture (11) dirigé vers le substrat (1) peut être produit, et avec des tuyères d'air comprimé (13) disposées au pulvérisateur pneumatique (9) pour produire des courants d'air directifs parallèles à la surface du cône de pulvérisation (11) le pulvérisateur pneumatique (9) et le substrat (1) pouvant être déplacés relativement l'un par rapport à l'autre, caractérisé par le fait qu'à l'extérieur du pulvérisateur pneumatique (9) sur l'un de ses côtés au moins une tuyère d'air (10) connectée à une amenée d'air comprimé (10) est disposée stationnairement par rapport au pulvérisateur pneumatique (9) et inclinée contre le cône de brouillard de peinture (11) produit par celui-ci est ajustée de manière que le cône de pulvérisation de peinture (11) peut être déformé asymétriquement par un courant d'air comprimé sortant de la tuyère d'air (10).
  12. Dispositif suivant revendications 10 et 11, caractérisé par le fait que sur l'un des côtés du cône de pulvérisation (8 ou 11) une multitude de tuyères d'air (5 ou 10) est disposée à l'extérieur de la cloche de pulvérisateur à haute rotation (2) ou du pulvérisateur pneumatique (9) stationnairement à celle-ci ou à celui-ci et inclinée vers l'axe du cône de pulvérisation (14) de manière que le cône de pulvérisation (8 ou 11) peut être déformé asymétriquement par les courants d'air (15) sortant des tuyères d'air (8 ou 10).
  13. Dispositif suivant revendication 12, caractérisé par le fait que la multitude des tuyères d'air (5 ou 10) est par rapport au cône de pulvérisation (8 ou 11) disposée unilatéralement en demi-cercle.
  14. Dispositif suivant revendications 12 et 13 caractérisé par le fait que la multitude des tuyères d'air (5 ou 10) est par rapport au cône de pulvérisation (8 ou 11) disposée unlilatéralement en plusieurs plans.
  15. Dispositif suivant revendications 12 à 14, caractérisé par le fait que la multitude des tuyères d'air (5 ou 10) est disposée radialement les unes par rapport aux autres à différente distance.
  16. Dispositif suivant revendications 13 à 15, caractérisé par le fait que l'ajustement angulaire de chaque tuyère d'air (5 ou 10) par rapport à l'axe (14) du cône de pulvérisation (8 ou 11) dépend de la position de cette tuyère d'air (5 ou 10) dans la disposition en demi-cercle des tuyères d'air (5 ou 10).
  17. Dispositif suivant revendication 13, caractérisé par le fait que la tuyère d'air disposée au centre de la disposition en demi-cercle des tuyères d'air (5 ou 10) est inclinée plus fort sur le cône de pulvérisation (8 ou 11) que les tuyères d'air (5 ou 10) qui se trouvent au bord de la disposition en demi-cercle.
  18. Dispositif suivant revendication 10, caractérisé par le fait qu'à l'intérieur de la cloche de pulvérisateur à haute rotation (2) est prévue une amenée (17) pour air comprimé.
EP94109125A 1994-06-14 1994-06-14 Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide Expired - Lifetime EP0695582B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP94109125A EP0695582B1 (fr) 1994-06-14 1994-06-14 Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide
DE59408862T DE59408862D1 (de) 1994-06-14 1994-06-14 Verfahren und Vorrichtung zum elektrostatischen und / oder pneumatischen Applizieren von flüssigen Überzugsmitteln auf leitfähige Substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94109125A EP0695582B1 (fr) 1994-06-14 1994-06-14 Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide

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EP0695582A1 EP0695582A1 (fr) 1996-02-07
EP0695582B1 true EP0695582B1 (fr) 1999-10-27

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EP94109125A Expired - Lifetime EP0695582B1 (fr) 1994-06-14 1994-06-14 Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide

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EP (1) EP0695582B1 (fr)
DE (1) DE59408862D1 (fr)

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Publication number Priority date Publication date Assignee Title
DE10202712A1 (de) * 2002-01-24 2003-07-31 Duerr Systems Gmbh Verfahren zum Steuern der Sprühstrahlbreite eines Zerstäubers und Zerstäuber für die Serienbeschichtung von Werkstücken
DE102006054786A1 (de) 2006-11-21 2008-05-29 Dürr Systems GmbH Betriebsverfahren für einen Zerstäuber und entsprechende Beschichtungseinrichtung
DE102007006547B4 (de) 2007-02-09 2016-09-29 Dürr Systems GmbH Lenkluftring und entsprechendes Beschichtungsverfahren
DE102011114382A1 (de) * 2011-09-23 2013-03-28 Dürr Systems GmbH Beschichtungsverfahren und Beschichtungseinrichtung mit einer Kompensation von Unsymmetrien des Sprühstrahls

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Publication number Priority date Publication date Assignee Title
US2610092A (en) * 1950-10-26 1952-09-09 Spray Engineering Co Spray discharge nozzle
CA1266561A (fr) * 1985-08-26 1990-03-13 Kabushiki Kaisha Toyota Chuo Kenkyusho Dispositif tournant d'enduction par atomisation
DE3600920A1 (de) * 1986-01-15 1987-07-16 Mann Siegfried Spruehkopf
JP2640395B2 (ja) * 1991-03-13 1997-08-13 日新製鋼株式会社 分散樹脂皮膜の形成装置

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DE59408862D1 (de) 1999-12-02
EP0695582A1 (fr) 1996-02-07

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