EP0695582A1 - 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

Info

Publication number
EP0695582A1
EP0695582A1 EP94109125A EP94109125A EP0695582A1 EP 0695582 A1 EP0695582 A1 EP 0695582A1 EP 94109125 A EP94109125 A EP 94109125A EP 94109125 A EP94109125 A EP 94109125A EP 0695582 A1 EP0695582 A1 EP 0695582A1
Authority
EP
European Patent Office
Prior art keywords
air
spray cone
directed
spray
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.)
Granted
Application number
EP94109125A
Other languages
German (de)
English (en)
Other versions
EP0695582B1 (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

Links

Images

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 the electrostatic and / or pneumatic application of liquid coating media to conductive substrates, in particular metallic basecoats on motor vehicle components, in which the liquid paint is sprayed onto the substrate electrostatically and / or pneumatically and parallel to the substrate to produce a spray cone
  • Directional air flows are generated on the surface of the spray cone.
  • the invention further relates to a device for the electrostatic application of liquid coating compositions to conductive substrates, in particular metallic basecoats on motor vehicle components, with a high-speed rotary atomizer bell connected as an electrode, from which a bell-like paint spray cone directed towards the substrate can be produced, with additional electrodes or as an electrode switched high-speed rotary atomizer bell and with compressed-air nozzles arranged on the high-speed rotary atomizer bell to generate directed air flows (steering air) parallel to the surface of the spray cone, the high-speed rotary atomizer bell and the substrate being movable relative to one another.
  • the invention further relates to a device for the pneumatic application of liquid coating compositions to conductive substrates, in particular metallic basecoats on motor vehicle components, with a pneumatic atomizer having an electrostatic device, from whose horn air a paint spray cone directed towards the substrate can be generated, and with compressed air nozzles arranged on the pneumatic atomizer for generating directed air flows parallel to the surface of the spray cone, the pneumatic atomizer and the substrate relative to one another are movable.
  • Liquid coating media can be applied to substrates in various ways.
  • the application of generally low-viscosity coating agents, such as liquid lacquers, by means of spraying onto a substrate to be coated is well known. This is done pneumatically, e.g. with compressed air, the liquid paint is atomized through a nozzle directed towards the object to be painted and sprayed on the object. This process results in a directed flow of the paint particles onto the substrate surface, the larger paint particles being deposited on the surface and forming a paint film.
  • the air used for spraying has to flow off the side of the substrate and leads very finely divided paint particles past the substrate into the surrounding air space. This paint mist is called overspray. Depending on the choice of process parameters, it can comprise considerable amounts of the sprayed coating material, for example between 40 and 90%. This overspray portion has to be collected and disposed of in a complex manner.
  • Methods for applying coating agents by means of electrostatically assisted rotary atomizers are also known, which have so-called rotary bells into which the coating agent is fed into the interior at high rotational speeds. Due to the centrifugal force, the coating agent is transported outside to the edge of the rotary bell and atomized there into fine droplets.
  • the rotary bell can be connected as an electrode, which charges the resulting paint mist electrostatically by means of electrical voltage.
  • the substrate to be coated acts as the counter electrode. It is also common to direct additional air flows onto the paint mist parallel to the surface of the rotary bell, which reduce distribution of the paint mist outwards into the spray booth and thus produce a spray cone of the paint mist which is directed onto the substrate to be painted.
  • This spray cone is rotationally symmetrical and often bell-shaped, consists of paint mist on the jacket, but is practically lack of paint on the inside. If necessary, air can be directed into the interior of the spray cone in order to avoid a negative pressure there.
  • a device is described in DE-A 32 14 314.
  • the paint particles are directed onto the substrate by the electric field lines. A high degree of separation of the paint can be achieved by this process.
  • the overspray content is only up to 40%. However, this portion still has to be collected and disposed of.
  • the nozzles of the air supply around the rotary bell for enveloping the spray cone are generally ring-shaped.
  • a nozzle attached as a ring around the atomizer device With air supply, this nozzle is intended to swirl cleaning fluid when changing the paint.
  • the nozzle completely envelops the spray element.
  • the invention is based on the object of providing a method and a device for electrostatic and / or pneumatic application of coating liquids according to the type mentioned at the outset, with which the number or the number of oversprays produced is reduced compared to the prior art the layers of the same coating agent to be applied successively to the substrate can be reduced.
  • the effect should be well developed, e.g. of the metallic effect can be achieved.
  • the coating agent to be applied is atomized by means of the electrostatically assisted high-speed rotary atomizer bell and brought onto the substrate to be painted, the one or more nozzles arranged essentially semicircularly around the high-speed rotary atomizer bell each directing and deflecting an air stream against the paint spray cone generated, and thereby deflecting the substrate to be coated from the side of the high-speed rotary atomizer bell, which is opposite to the semicircular nozzles, is moved to the latter corresponding side of the high-speed rotary atomizer bell.
  • Compressed air can preferably be introduced into the interior of the spray cone directed towards the substrate by means of an air supply led between the high-speed rotary atomizer bell and the substrate, so that no negative pressure arises in the interior of the spray cone in relation to the air pressure prevailing outside.
  • turbulent clouds of finely divided paint mist droplets are avoided, which do not get onto the substrate, but are distributed as overspray in the coating room.
  • the rotationally symmetrically generated paint mist bell is influenced on one side by one or more directed air jets and the shape of the paint mist bell is changed asymmetrically.
  • the air nozzles are arranged on one side around the rotary bell, in particular they can be arranged in a part-circle around the rotary bell, for example semicircular. It is preferably possible to provide several rows of nozzles.
  • the rows of nozzles In contrast to the enveloping air jacket of the rotary bell, they are not aligned parallel to the surface of the rotary bell, but rather they point inclined towards the interior of the spray bell.
  • the additional air streams generated make it possible to deform the spray bell asymmetrically, for example in the shape of an egg.
  • the finer paint mist particles are deflected to a greater extent than the coarser particles, so that the spray pattern is deformed such that finer paint droplets are preferably deposited on the side opposite the air nozzles, while coarser droplets are preferably deposited on the side of the additional air supply.
  • the additional air flow increases the speed component of the drops towards the workpiece.
  • the strength of the air flow of a nozzle may depend on the location of the air nozzle. In particular, the air flow should be strongest in the middle of the semi-circular arrangement. It is also possible to adjust the direction of the air nozzle depending on the position of the nozzle on 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 at the edges. With these two measures, a targeted alignment of the spray cone can be achieved.
  • At least two different partial circles of additional air nozzles can also be arranged around the high-speed rotary atomizer bell.
  • the orientation of the individual air nozzles and the air speed at the different nozzle rows can be selected differently. It is also possible to combine an air supply in the spray cone with external air nozzles. This creates a constant, asymmetrical, non-pulsating spray mist bell, which is also asymmetrical with regard to the distribution of larger and smaller paint droplets can.
  • the substrate to be painted and the high-speed rotary atomizer are moved relative to one another.
  • the direction of movement must be such that when the external air nozzles are put into operation, the finer droplets first reach the substrate and then the coarser paint droplets.
  • the movement should be as even as possible. It can be generated by known methods.
  • the substrate can be guided past solid spray organs; on the other hand, it is also possible to use the spray organs e.g. computer-controlled to pass the substrate to be coated. Methods for this are well known in the art.
  • the coating agents to be applied in the manner according to the invention are known in principle. These are the usual coating compositions based on solvent-based, but especially aqueous coating compositions.
  • the viscosity of the coating agent is adapted to the spraying element. This can be done by known measures, e.g. Dilute with water or solvent or by changing the temperature.
  • the coating agents can be so-called fillers, basecoats or clearcoats.
  • the method according to the invention is suitable for applying effect lacquers, in particular metallic basecoats.
  • Suitable substrates to be coated are all conductive objects which either have an intrinsic conductivity or which have been provided with a conductive coating.
  • 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 spraying various coating agents.
  • it is used in multi-layer painting in the automotive or automotive supply industry. It is advantageous that a constant application pattern of the coating agent to be applied is obtained with the method according to the invention, since only slight air vortices arise and only a reduced amount of overspray content of the paint is obtained.
  • the proportion of overspray can be reduced to below 30% of the paint material used by the process according to the invention. Due to the increased amount applied, it may be possible to reduce the number of coats of a coat of paint. 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, to achieve excellent effect formation, e.g. excellent metallic effects training.
  • effect paints in particular metallic effect paints
  • This excellent metallic effect can only be obtained with conventional procedures with a considerably higher proportion of overspray.
  • a supply of air into the interior of the paint mist bell is additionally provided in the center, said device having a device for controlling the corresponding air flow. This device ensures that the air flow is only so strong that no negative pressure is created in the middle of the paint mist bell and a pulsation of the bell shape is avoided.
  • the device has at least one, preferably a plurality of additional nozzles, which are arranged on one side of the device, preferably in the form of a part circle, around the rotary bell.
  • the included angle can also be selected to be greater than 180 ° in order to achieve the half-sided complete enveloping and deflection of the spray cone.
  • the nozzles are aligned with the spray cone and deflect it.
  • Several semi-circular sets of air nozzles can also be provided. The air nozzles are firmly attached to the device, they do not rotate with the rotating bell.
  • nozzles can be used, e.g. point-shaped nozzles, slot-shaped nozzles or semi-circular nozzles.
  • a control device is to be provided on the air supply for the nozzles with which the air speed and the amount of air can be influenced. These parameters depend on the shape of the paint mist bell. The skilled worker can determine them in a few experiments using the spray pattern.
  • the internal and external air supply are combined, i.e. the air supply of the air nozzles arranged outside of the high-speed rotary atomizer bell on one side and the air supply into the interior of the high-speed rotary atomizer bell are combined and can be carried out simultaneously without problems.
  • the device for the electrostatic application of coating liquids to a conductive substrate 1 has a high-speed rotary atomizer bell 2, which is connected as an electrode and has a suspension in which a paint supply 4 is provided.
  • An annular nozzle 3 is also provided on the jacket of the high-speed rotary atomizer bell 2 for generating directed air flows parallel to the surface of the spray cone 8.
  • Additional electrodes can also be provided in the area of the high-speed rotary atomizer bell 2.
  • a channel 4 is provided, through which is controlled by a device not shown Air can be supplied within the spray cone 8.
  • additional air nozzles 5 with feed lines 6 are arranged on one side of which are inclined.
  • outside air nozzles 5 are arranged stationary relative to the high-speed rotary atomizer bell 2, ie they do not rotate with the latter.
  • the additional air nozzles 5 are directed against the spray cone 8, which is given the asymmetrical shape 7 by the directed air streams emerging from the air nozzles 5.
  • Fig. 2 shows a plan view of an embodiment of the device, in which a circular ring nozzle 5 is provided outside of the high-speed rotary atomizer bell 2 on one side.
  • FIG 3 shows a further embodiment of the device with two different sets of air nozzles 5a, 5b provided outside the high-speed rotary atomizer bell 2 on one side thereof.
  • These air nozzles 5a, 5b can be inclined differently depending on their position relative to the rotary bell and can emit different amounts of air.
  • slot and round nozzles can be provided.
  • FIG. 4 shows the spray pattern of the asymmetrically deformed spray cone, the high-speed rotary atomizer bell 2, the additional air nozzles 5 and the spray pattern 7 being shown schematically.
  • the larger paint droplets essentially separate out.
  • the smaller paint droplets of the paint mist cloud separate.
  • the relative movement of the substrate 1 to be painted and the high-speed rotary atomizer bell 2 is shown by the arrow along the main axis of the elliptical spray pattern 7.
  • 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 9 having a housing 12, which produces a spray cone 11 directed onto the substrate 1.
  • Air nozzles 13 provided on the pneumatic atomizer 9 emerge from the surface of the spray cone 11, parallel, directed air streams to limit the spray mist.
  • the paint feed 16 and the feed for the atomizing air 17 of the pneumatic atomizer 9 are provided in the center of the housing 12, as shown in FIG. 6.
  • the substrate 1 and the pneumatic atomizer 9 can be moved relative to one another.

Landscapes

  • 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)
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

Publications (2)

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

Family

ID=8216015

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (2)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1331037A2 (fr) 2002-01-24 2003-07-30 Dürr Systems GmbH Procédé et pulvérisateur pour le revêtement de pièces en séries
US8097293B2 (en) 2006-11-21 2012-01-17 Durr Systems Inc. Operating method for an atomiser and a corresponding coating apparatus
WO2013041184A1 (fr) * 2011-09-23 2013-03-28 Dürr Systems GmbH Procédé de revêtement et dispositif de revêtement ayant une compensation des asymétries du jet de pulvérisation
EP2121197B1 (fr) 2007-02-09 2016-09-14 Dürr Systems GmbH Bague de guidage d'air

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610092A (en) * 1950-10-26 1952-09-09 Spray Engineering Co Spray discharge nozzle
EP0216173A2 (fr) * 1985-08-26 1987-04-01 Kabushiki Kaisha Toyota Chuo Kenkyusho Appareil de revêtement du type pulvérisateur à sortie rotative
DE3600920A1 (de) * 1986-01-15 1987-07-16 Mann Siegfried Spruehkopf
JPH04284871A (ja) * 1991-03-13 1992-10-09 Nisshin Steel Co Ltd 分散樹脂皮膜の形成装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610092A (en) * 1950-10-26 1952-09-09 Spray Engineering Co Spray discharge nozzle
EP0216173A2 (fr) * 1985-08-26 1987-04-01 Kabushiki Kaisha Toyota Chuo Kenkyusho Appareil de revêtement du type pulvérisateur à sortie rotative
DE3600920A1 (de) * 1986-01-15 1987-07-16 Mann Siegfried Spruehkopf
JPH04284871A (ja) * 1991-03-13 1992-10-09 Nisshin Steel Co Ltd 分散樹脂皮膜の形成装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 93 (C - 1029) 24 February 1993 (1993-02-24) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1331037A2 (fr) 2002-01-24 2003-07-30 Dürr Systems GmbH Procédé et pulvérisateur pour le revêtement de pièces en séries
EP1923138A1 (fr) 2002-01-24 2008-05-21 Dürr Systems GmbH Procédé et gicleur pour le revêtement en série de pièces à usiner
EP2143500A3 (fr) * 2002-01-24 2011-02-09 Dürr Systems GmbH Procédé et pulvérisateur pour le revêtement de pièces en séries
US8097293B2 (en) 2006-11-21 2012-01-17 Durr Systems Inc. Operating method for an atomiser and a corresponding coating apparatus
EP2121197B1 (fr) 2007-02-09 2016-09-14 Dürr Systems GmbH Bague de guidage d'air
WO2013041184A1 (fr) * 2011-09-23 2013-03-28 Dürr Systems GmbH Procédé de revêtement et dispositif de revêtement ayant une compensation des asymétries du jet de pulvérisation
CN103826755A (zh) * 2011-09-23 2014-05-28 杜尔系统有限责任公司 对喷流非对称性补偿的涂覆方法与涂覆装置
US11311903B2 (en) 2011-09-23 2022-04-26 Dürr Systems Ag Coating method and coating device with compensation for asymmetries of the spray jet

Also Published As

Publication number Publication date
DE59408862D1 (de) 1999-12-02
EP0695582B1 (fr) 1999-10-27

Similar Documents

Publication Publication Date Title
EP1426113B1 (fr) Pulvérisateur rotatif pour le revêtement de pièces avec une laque à effets
EP2285495B1 (fr) Pulvérisateur universel
DE975380C (de) Verfahren und Vorrichtung zum gleichmaessigen UEberziehen von Gegenstaenden mit Hilfe eines elektrostatischen Feldes
EP2122427B1 (fr) Méthode d'exploitation pour un pulvérisateur et dispositif de revêtement correspondant
DE202007008816U1 (de) Zerstäuberkopf für eine Spritzpistole
EP0034278B1 (fr) Procédé et appareil pour le revêtement électrostatique d'objets à l'aide d'un fluide
WO2011138048A1 (fr) Dispositif de revêtement présentant un jet de produit de revêtement divisé sous forme de gouttes
DE3505618A1 (de) Verfahren zum beschichten von gegenstaenden mit hilfe eines spruehstrahls und vorrichtung zur durchfuehrung dieses verfahrens
EP0808663A2 (fr) Appareil de pulvérisation électrostatique
EP3034175B1 (fr) Tete de buse et pulverisateur rotatif en etant dote
DE102007012878B3 (de) Zerstäuber zum Zerstäuben eines Beschichtungsmittels
EP0139274B1 (fr) Procédé et appareil pour l'application d'une couche de laque en deux ou plusieurs couleurs
EP0695582B1 (fr) Procédé et dispositif de revêtement électrostatique et/ou pneumatique d'un substrat conducteur par un produit de revêtement liquide
EP1560663B1 (fr) Systeme de pulverisation a ondes stationnaires ultrasonores
EP1280610B1 (fr) Buse melangeuse externe
DE1291655B (de) Rotierender Zerstaeuber zum elektrostatischen UEberziehen eines Werkstueckes mit fluessigem UEberzugsmaterial
DE69723757T2 (de) Rotierende elektrostatische Sprühvorrichtung
DE19938093B4 (de) Verfahren und Rotationszerstäuber zum serienweisen Beschichten von Werkstücken
DE1427677C3 (de) Vorrichtung zum elektrostatischen Farbspritzen
DE19608754C2 (de) Verfahren zum Aufbringen von Farben oder Lacken und Vorrichtung zur Durchführung des Verfahrens
DE4426039A1 (de) Verfahren zur Herstellung und Ausbesserung von mehrschichtigen Effektlackierungen
EP0692315A1 (fr) Procédé et dispositif pour appliquer des laques liquides aux surfaces
DE4243136C1 (de) Verfahren zum Aufbringen eines Lacküberzugs auf ein Werkstück
DE10324074B4 (de) Glockenteller für einen Rotationszerstäuber
AT236013B (de) Spritzgerät zum Zerstäuben und Niederschlagen von Flüssigkeiten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19960731

17Q First examination report despatched

Effective date: 19980302

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19991027

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991027

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19991027

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991027

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991027

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59408862

Country of ref document: DE

Date of ref document: 19991202

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19991027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090826

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110101