EP2401090B1 - Elektrostatisches sprühgerät mit beweglichen elektroden sowie verfahren für elektrostatisches sprühen mit einem derartigen sprühgerät - Google Patents

Elektrostatisches sprühgerät mit beweglichen elektroden sowie verfahren für elektrostatisches sprühen mit einem derartigen sprühgerät Download PDF

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Publication number
EP2401090B1
EP2401090B1 EP10709898.0A EP10709898A EP2401090B1 EP 2401090 B1 EP2401090 B1 EP 2401090B1 EP 10709898 A EP10709898 A EP 10709898A EP 2401090 B1 EP2401090 B1 EP 2401090B1
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Prior art keywords
electrodes
atomizer
electrode
moving
configuration
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English (en)
French (fr)
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EP2401090A1 (de
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Franck Gerstch
Patrick Ballu
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Sames Kremlin SAS
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Sames Technologies SAS
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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
    • 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
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • 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

Definitions

  • the present invention relates to an electrostatic coating product projector comprising a plurality of moving electrodes. Furthermore, the present invention relates to an electrostatic projection method using such a projector.
  • coating product is meant any product intended to be sprayed onto an object to be coated in the form of droplets or particles of powder, for example a primer, a paint, a varnish, etc.
  • a projector comprises a body supporting a spraying member whose function is to project the coating product to be deposited on the object to be coated.
  • an "externally charged” type electrostatic projector a plurality of electrodes attached to the projector body extend around the spray member.
  • the electrodes are intended to raise the electric potential of the droplets or powder particles constituting the coating product, by generating an electric field between each electrode and the object to be coated connected to an electrical mass, which increases its deposition efficiency.
  • An "externally charged” electrostatic projector is usually mounted at the end of a multiaxis robot arm to be moved facing the outer surfaces of a hollow part, such as a car body.
  • US 2008/0149026 A1 discloses an electrostatic projector comprising electrodes mounted on a removable ring which when disassembled allows better access of the projector to difficult parts.
  • a projection method of the prior art therefore requires two different projectors, an electrostatic projector and a pneumatic projector, and two arms of multi-axis robots, which represents high costs in equipment and maintenance .
  • the present invention aims in particular to overcome these disadvantages, by providing a coating product projector having external electrodes for coating the outer surfaces of a hollow part and whose size also allows it to coat the inner surfaces of this hollow part .
  • a "means of articulation" connects two parts together, for example the body and each electrode, allowing them a relative movement, such as pivoting, a translation etc. It may be for example a mechanism or an elastic connection.
  • the figure 1 shows a projector P comprising a body 2 which can be fixed on a multi-axis robot arm R, whose envelope is symbolized in phantom at the figure 1 .
  • the body 2 has a laying surface 22 which is in the form of a disc and which accommodates unrepresented connectors for feeding the projector P with a coating product, electric current, compressed air etc. These connectors are connected to corresponding lines which are housed in the projector P.
  • the projector P comprises a spraying member 1 which is supported by a distal portion 21 of the projector P.
  • the adjective "distal” designates an element remote from the plane of placement 22, while the adjective “proximal” designates an element which is near.
  • the body 2 forms the proximal portion of the projector P.
  • the organ 1 is here formed of a rotating bowl which is movable about an axis of rotation X 1 with respect to the body 2.
  • the spraying member 1 has a ridge 12 of circular shape, where the coating product, in the occurrence in liquid form, is sprayed into fine droplets towards the object to be coated.
  • the distal portion 21 has a symmetry of revolution about the axis X 1 . In the case where the spraying member 1 is a bowl, the edge 12 has a diameter of between 20 mm and 100 mm.
  • the projector P comprises eight electrodes 31, 32, 33, 34, 35, 36, 37 and 38 which are regularly distributed about the axis X 1 , that is to say around the spray member 1.
  • the projector object of the invention may comprise between three and twenty-five electrodes.
  • the regular distribution of the electrodes 32 to 38 around the spraying member 1 is also visible in the plane of the figure 3 , where the electrodes 31 to 38 are separated in pairs by an angle A of about 45 °.
  • Each electrode 31, 32, 33, 34, 35, 36, 37 or 38 is formed of a respective proximal portion 311, 321, 331, 341, 351, 361, 371 and 381, of a respective medial portion 312, 322 , 332, 342, 352, 362, 372 and 382, as well as a respective distal portion 313, 323, 333, 343, 353, 363, 373 and 383.
  • the proximal portions 311 and medial 312 are visible at the figure 4 and the proximal portions 321 to 381 and medians 322 to 382 are visible at figure 1 .
  • Each electrode 31 to 38 has substantially the shape of a finger extending generally in a direction transverse to the axis X 1 .
  • Each of the proximal portions 311 to 381 has a generally straight shape.
  • each of the distal portions 313 to 383 has a generally rectilinear shape which is inclined relative to the corresponding proximal portion 311 to 381.
  • Each of the medial portions 312 to 382 has a curved shape and interconnecting the respective proximal portion 311 to 381 and the respective distal portion 313 to 383.
  • the curvature of each medial portion 312 to 382 induces, between the corresponding proximal portion 311 to 381 and the corresponding distal portion 313 to 383, an angle which is approximately 30 °, such that the angle B materialized at the figure 1 between a main direction X 331 of the proximal portion 331 and a main direction X 333 of the distal portion 333. In this way, the medial portions 312 to 382 follow the curvature of the body 2.
  • the angle A, visible at figure 3 which separates two adjacent electrodes 31 to 38 is measured between the radial direction Y 333 of the distal portion 333 of the electrode and the radial direction Y 323 of the distal portion 323 of the electrode 32.
  • Each electrode 31 to 38 comprises an electrical conductor having an elongate and preferably pointed shape, to fulfill the function of the actual electrode, that is to say to generate an electric field between the electrode and the object to be coated. connected to an electrical ground.
  • the electrodes 31 to 38 are indeed intended to raise the electrical potential of the coating product when it is projected by the edge 12.
  • the figure 1 shows the end portion of such an electrical conductor with the reference 350 at a partial tearing of the distal portion 353 of the electrode 35.
  • the electrical conductor 350 is here completely housed within the proximal portions 351, median 352 and In other words, the proximal portions 351, medial 352 and distal 353 form a support and a housing for the electrical conductor 350.
  • the proximal portions 351, medial 352 and distal 353 consist of an electrically insulating material, such as polytetrafluoroethylene (PTFE) or a moldable resin.
  • PTFE polytetrafluoroethylene
  • the thickness of insulating material surrounding the conductive elements is determined as a function of the high voltage at which the electrodes 31 to 38 are intended to be carried, so as to avoid arcing.
  • the insulating material prevents the propagation of electric arcs to the ambient air.
  • the projector P further comprises hinge means that allow pivoting of each of the electrodes 31 to 38 relative to the body 2.
  • These hinge means which bear the numerals 41, 42, 43, 44, 45, 46 , 47 and 48, are respectively associated with the electrodes 31, 32, 33, 34, 35, 36, 37 and 38.
  • the pivoting of each of the electrodes 31 to 38, enabled by the respective articulation means 41 to 48, is along a respective pivot axis, such as the axes T 41 , T 42 , T 43 , T 44 , T 45 and T 46 visible to the figures 1 and 4 .
  • Each of the pivot axes T 41, T 42, T 43 , T 44 , T 45 and T 46 extends substantially upstream of the spray member 1 and close to the surface 2.
  • the terms “upstream” and “downstream” are used herein with reference to the general direction of flow of the coating product through the projector P, from the laying plane 22, which constitutes upstream, up to at the edge 12, which is the downstream.
  • Each pivot axis T 41 to T 46 extends in a proper direction which is orthoradial or circumferential with respect to the body 2.
  • the electrodes 31 to 38 are mounted, via the articulation means 41 to 48 corresponding, on an electrode support 23.
  • the electrode support 23 is integral with the body 2, on which it can be fixed by any appropriate means of fixation.
  • the electrode support 23 has a generally annular shape with a symmetry of revolution about the axis X 1 .
  • Each of the hinge means 41 to 48 may comprise a hinge formed by unrepresented cylindrical pins which are arranged in complementary housings provided on the electrode support 23.
  • the hinge means 41 to 48 are thus integral with the support electrodes 23, therefore the body 2.
  • such pins are replaced by equivalent connecting members for a rotation or a curvilinear translation and forming the hinge means.
  • the hinge means 41 to 48 respectively allow the displacement, relative to the body 2, of the electrodes 31 to 38, so in this case all the electrodes of the projector P.
  • the displacement of the electrodes 31 to 38 takes place between a compact configuration, which is represented in FIG. figure 4 , and an expanded configuration, which is represented in Figures 1 to 3 .
  • the electrodes 31 to 38 occupy together a first volume V 4 represented in phantom at the figure 4 .
  • the electrodes 31 to 38 occupy together a second volume V 1 , which is shown in phantom at the figure 1 .
  • the term "set" refers to a volume occupied by the surface surrounding the set of electrodes 31 to 38, as opposed to the simple addition of the unit volumes occupied by each electrode 31 to 38.
  • the surface surrounding all of the electrodes 31 to 38 is generally frustoconical.
  • the The surface surrounding the set of electrodes 31 to 38 is generally cylindrical.
  • the first volume V 4 of the compact configuration is less than the second volume V 1 of the deployed configuration.
  • the first volume V 4 has dimensions smaller than the dimensions of the second volume V 1 .
  • the projector P has a small footprint in compact configuration compared to the size it has in deployed configuration.
  • each of the electrodes 31 to 38 extends in contact and along the body 2.
  • this arrangement of the electrodes 31 to 38 is made possible by the curved shape of their respective median portions 312 to 382
  • each electrode 31 to 38 follows the curvature of the distal portion 21 of the projector P.
  • the angle B substantially corresponds to the half-angle at the apex B 21 , visible at the figure 1 , a frustoconical downstream portion of the distal portion 21.
  • each electrode 31 to 38 is disposed at a first distance from a longitudinal axis of the body 2 formed by the axis X 1 .
  • This first distance is represented by the reference 135 for the electrode 35.
  • the first distance 135 is measured in a radial direction Y 353 which is associated with the distal portion 353.
  • the first distance 135 is 65 mm. In practice, the first distance 135 must be as small as possible depending on the dimensions of the spray member.
  • the electrodes 31 to 38 are distributed regularly and with a symmetry of revolution about the axis X 1 .
  • the end portions of the electrodes 31 to 38 are arranged on a circle C of axis X 1 and 250 mm in diameter.
  • terminal portion of an electrode is meant the downstream end of the respective distal portion 313 to 383 which carries the end of an electrical conductor type 350.
  • the diameter of the circle C can be between 100 mm and 500 mm.
  • each electrode 31 to 38 is disposed at a second distance from the longitudinal axis of the body 2 formed by the axis X 1 .
  • This second distance is represented at figures 1 and 3 133 for the electrode 33.
  • second distance 133 is measured in a radial direction Y 333 which is associated with the distal portion 333.
  • the second distance 133 is 165 mm.
  • the first distance 135 is smaller than the second distance 133.
  • the second distance 133 may be between 50 mm and 250 mm.
  • the first distance 135 represents about 25% of the second distance 133.
  • the ratio between the first distance 135 and the second distance 133 may be between 10% and 70%. This ratio corresponds to the gain in size that the projector P allows by passing from its deployed configuration to its compact configuration.
  • the axial withdrawal L along the axis X 1 between the edge 12 and each electrode 31 to 38 is relatively small, since it is approximately 30 mm.
  • each of the electrodes 31, 32 and 34 to 38 is also at the distance 133 from the spraying member 1.
  • Sealing means may be mounted on the electrodes 31 to 38 to protect them from soiling caused by the spraying of coating material.
  • an elastic sleeve of insulating material can totally or partially cover each electrode 31 to 38.
  • such an elastic sleeve can thus cover the proximal portions 311, median 312 and distal 313.
  • such an elastic sleeve may also cover the hinge means 41 to 48 to limit the penetration of dirt.
  • the projector P also comprises actuators (not shown) which are arranged near the respective articulation means 41 to 48 and between the electrode support 23 and the respective electrodes 31 to 38.
  • actuators may for example consist of pneumatic cylinders.
  • the projector P may further comprise a mechanical stop to limit the pivoting of each electrode 31 to 38 when it has reached the deployed configuration, and a return member for returning each electrode in a compact configuration.
  • a mechanical stop may be for example consisting of a projecting part of the body of the sprayer or a crank-rod device.
  • a return member may for example consist of an elastic member or a pneumatic actuator type actuator.
  • the projector may comprise an actuator common to the moving electrodes, for example a pneumatic cylinder, and means for transmitting to all the mobile electrodes the force developed by this common actuator.
  • the projector P allows, when the electrodes 31 to 38 are in the deployed configuration shown in FIGS. Figures 1 to 3 electrostatically projecting a coating product on the outer surfaces of a hollow part, such as an automobile body.
  • the generation of an electrostatic field between the electrodes 31 to 38 and the object to be coated connected to the mass makes it possible to obtain a high deposition efficiency of the coating product on the object to be coated.
  • the projector P when in compact configuration shown in FIG. figure 4 , has radial dimensions reduced compared to its radial dimensions in deployed configuration, which allows to project the coating product on the interior surfaces of the automobile body, particularly those that are difficult to access because located in a reduced volume.
  • the projector P is indeed compact enough, so its small enough space, to penetrate in reduced volumes.
  • a coating product spraying method comprises a step where the electrodes 31 to 38 are placed in an expanded configuration and are carried at a high voltage, for example 100 kV, to project the coating product. on the outer surfaces of a hollow part, as well as a step where the electrodes 31 to 38 are placed in a compact configuration and where they are brought to a low or zero voltage, for example by interrupting the high-voltage current, for projecting the coating product on the interior surfaces of this automobile body.
  • the present invention therefore requires only one type of projector for coating the outer surfaces and the inner surfaces of the same hollow part, instead of two types of projectors implemented in the prior art. Hardware and maintenance costs are therefore significantly reduced.
  • this threshold position may be constituted, for example, by the end of travel of the electrodes, which corresponds to the compact configuration, or by a safety distance defined by a minimum distance from the nozzle.
  • Such a synchronization may possibly include a slight time difference between the two commands.
  • each electrode automatically triggers the interruption of the high voltage supply of the corresponding electrodes.
  • Such a synchronized interruption notably makes it possible to limit the consumption of electrical energy and the risks of an electric arc.
  • the synchronization means can transmit a signal controlling the folding both to the actuators of the electrodes and to the electrode supply means, so as to initiate the folding movement towards the compact configuration simultaneously with the interruption of the high power supply. voltage.
  • the interruption of the supply of each electrode can be controlled by magnetic detection proximity sensors, of REED or equivalent type, which detect the arrival of each electrode near the respective sensor and in threshold position, by example in compact configuration.
  • the interruption of the supply of each electrode can be controlled by a not shown mechanical switch, which is mounted between the body and the respective electrode and is actuated when at least one electrode arrives in the threshold position, for example in compact configuration.
  • the mechanical switch fulfills the function of proximity sensor.
  • each electrical circuit supplying an electrode is formed of at least two independent conductors. These independent conductors are arranged to be in electrical contact when the corresponding electrode is in deployed configuration, thereby supplying the electrode, and to be disjoint when the corresponding electrode is in a compact configuration, thus interrupting the high voltage supply of this electrode.
  • the synchronization means can control the folding movement of the electrodes to the compact configuration when the supply of each electrode is interrupted.
  • the interruption of the high voltage supply of each electrode triggers the folding movement of the corresponding electrodes.
  • the electrical conductor that performs the function of the actual electrode is placed in projection relative to the support formed by the proximal, medial and distal portions of an electrode. This electrical conductor then forms a tip projecting out of the distal portion.
  • the spray member may be fixed relative to the body of the projector.
  • a spraying member may for example consist of a nozzle integral with the body.
  • the electrodes may be distributed angularly around the spraying member in an irregular manner, for example to adapt to an asymmetrical geometry of the spraying member, which for example projects the coating product in the form of a flat stream.
  • the hinge means of the electrodes relative to the body can allow a translation without pivoting electrodes or a telescopic extension of each of the electrodes.
  • each type of articulation means 41 to 48 may be formed by an elastic portion of the respective electrode.
  • all or part of the electrode, including this elastic part, can be made of elastic material.
  • the projector may comprise some fixed electrodes, that is to say which are not associated with articulation means and which do not move relative to the body of the projector.
  • the articulation means allow the moving only a portion of the electrodes, namely the moving electrodes, relative to the body of the projector.
  • the displacement of the electrodes can be carried out, according to the means of joints used, for all the electrodes together or for each of them separately from the others.
  • an electrode can adopt all the intermediate positions on its displacement stroke or only its extreme positions, that is to say the compact position and the most deployed position. Each of these intermediate positions defines a particular deployed configuration.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Projection Apparatus (AREA)

Claims (13)

  1. Strahlvorrichtung (P) für Beschichtungsprodukt, aufweisend:
    - einen Körper (2),
    - ein Organ zur Pulverisierung (1) des Beschichtungsprodukts, das von dem Körper (2) gehalten wird,
    - mehrere Elektroden (31-38), die vorgesehen sind, um das elektrische Potential des Beschichtungsprodukts anzuheben, wobei die Elektroden (31-38) um das Organ zur Pulverisierung (1) herum angeordnet sind,
    wobei die Strahlvorrichtung (P) dadurch gekennzeichnet ist, dass sie ferner aufweist Mittel (41-48) zur Gelenkverbindung von allen oder einem Teil der Elektroden (31-38) bezüglich des Körpers (2), wobei die Elektroden (31-38) zwischen einer kompakten Konfiguration, in welcher die Elektroden (31-38) gemeinsam ein ersten Volumen (V4) einnehmen, und wenigstens einer entfalteten Konfiguration bewegbar sind, in welcher die Elektroden (31-38) gemeinsam ein zweites Volumen (V1) einnehmen, wobei das erste Volumen (V4) kleiner als das zweite Volumen (V1) ist.
  2. Strahlvorrichtung (P) gemäß Anspruch 1, dadurch gekennzeichnet, dass in der kompakten Konfiguration ein Endabschnitt jeder Elektrode (31-38) in einem ersten Abstand (135), entlang einer Radialrichtung (Y333), von einer Längsachse (X1) des Körpers (2) angeordnet ist und dass in einer der entfalteten Konfigurationen der Endabschnitt jeder Elektrode (31-38) in einem zweiten Abstand (133), entlang der Radialrichtung (Y333), von der Längsachse (X1) des Körpers (2) angeordnet ist, wobei der erste Abstand (135) kleiner als der zweite Abstand (133) ist.
  3. Strahlvorrichtung (P) gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zur Gelenkverbindung (41-48) ein Schwenken der bewegbaren Elektroden (31-38) bezüglich des Körpers (2) erlauben, wobei jede einer Schwenkachse (T41-T46) folgt, die sich wesentlich vor dem Organ zur Pulversierung (1) und nahe einer externen Fläche des Körpers (2) erstreckt.
  4. Strahlvorrichtung (P) gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zur Gelenkverbindung (41-48) mit dem Körper (2) fest verbunden sind.
  5. Strahlvorrichtung (P) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie wenigstens drei bewegbare Elektroden (31-38), bevorzugt acht, aufweist, wobei die bewegbaren Elektroden (31-38) gleichmäßig um das Organ zur Pulverisierung (1) herum verteilt sind.
  6. Strahlvorrichtung (P) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede bewegbare Elektrode (31-38) einen Halter (311-381, 312-382, 313-383) aus einem elektrisch isolierenden Material und wenigstens einen elektrischen Leiter (350) aufweist, der vollständig oder teilweise in dem Halter (311-381, 312-382, 313-383) untergebracht ist.
  7. Strahlvorrichtung (P) gemäß Anspruch 6, dadurch gekennzeichnet, dass jede bewegbare Elektrode zwei unabhängige elektrische Leiter aufweist, die derart eingerichtet sind, dass sie im elektrischen Kontakt sind, wenn die korrespondierende Elektrode in entfalteter Konfiguration ist, und getrennt sind, wenn die korrespondierende Elektrode in kompakter Konfiguration ist.
  8. Strahlvorrichtung (P) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die bewegbaren Elektroden (31-38) sich in der kompakten Konfiguration im Kontakt mit und entlang des Körpers (2) erstrecken.
  9. Strahlvorrichtung (P) gemäß Anspruch 8, dadurch gekennzeichnet, dass die bewegbaren Elektroden (31-38) einen Mittelteil (312-382) mit einer der Krümmung des Körpers (2) folgenden Kurvenform haben.
  10. Strahlvorrichtung (P) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner wenigstens eine Betätigungsvorrichtung zum Verlagern der bewegbaren Elektroden (31-38) zwischen der kompakten Konfiguration und der entfalteten Konfiguration hat.
  11. Strahlvorrichtung (P) gemäß den vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass sie ferner wenigstens einen Nähe-Sensor aufweist, der eingerichtet ist, um betätigt zu werden infolge der Verlagerung wenigstens einer Elektrode zwischen der entfalteten Konfiguration und der kompakten Konfiguration.
  12. Verfahren zum Strahlen eines Beschichtungsprodukts, dadurch gekennzeichnet, dass es eine Strahlvorrichtung (P) gemäß einem der vorhergehenden Ansprüche anwendet und dass es die folgenden Schritte aufweist:
    - Bringen der bewegbaren Elektroden (31-38) auf eine hohe Spannung, wenn die bewegbaren Elektroden (31-38) in einer entfalteten Konfiguration platziert sind, zum Strahlen des Beschichtungsprodukts auf die Außenflächen eines hohlen Werkstücks, wie einer Automobilkarosserie,
    - Bringen der bewegbaren Elektroden (31-38) auf eine niedrige oder null Spannung, wenn die bewegbaren Elektroden (31-38) in kompakter Konfiguration platziert sind, zum Strahlen des Beschichtungsprodukts auf die Innenflächen des hohlen Werkstücks.
  13. Verfahren gemäß Anspruch 12, dadurch gekennzeichnet, dass die Unterbrechung der Hohe-Spannung-Versorgung der bewegbaren Elektroden (31-38) synchronisiert ist mit der Verlagerung der bewegbaren Elektroden (31-38) zur kompakten Konfiguration hin.
EP10709898.0A 2009-02-24 2010-02-23 Elektrostatisches sprühgerät mit beweglichen elektroden sowie verfahren für elektrostatisches sprühen mit einem derartigen sprühgerät Active EP2401090B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0951167A FR2942415B1 (fr) 2009-02-24 2009-02-24 Projecteur electrostatique comportant des electrodes mobiles et procede de projection electrostatique mettant en oeuvre un tel projecteur.
PCT/FR2010/050303 WO2010097539A1 (fr) 2009-02-24 2010-02-23 Projecteur électrostatique comportant des électrodes mobiles et procédé de projection électrostatique mettant en oeuvre un tel projecteur

Publications (2)

Publication Number Publication Date
EP2401090A1 EP2401090A1 (de) 2012-01-04
EP2401090B1 true EP2401090B1 (de) 2015-04-08

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EP (1) EP2401090B1 (de)
CN (1) CN102333599A (de)
FR (1) FR2942415B1 (de)
WO (1) WO2010097539A1 (de)

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Publication number Priority date Publication date Assignee Title
FR3012985B1 (fr) 2013-11-12 2016-12-09 Sames Tech Projecteur electrostatique de produit de revetement et installation de projection comprenant un tel projecteur
EP3275559B1 (de) * 2016-07-27 2021-09-15 Exel Industries Beschichtungssystem mit einem ultraschallzerstäuber und elektrostatischem feld
DE102017113180A1 (de) * 2017-06-14 2018-12-20 Eisenmann Se Elektrostatischer Zerstäuber zur elektrostatischen Beschichtung von Werkstücken

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US3936045A (en) 1973-02-26 1976-02-03 Ricoh Co., Ltd. Sheet stripping device for copying apparatus
DE2402209A1 (de) * 1974-01-17 1975-07-31 Mueller Ernst Kg Vorrichtung zum elektrostatischen ueberziehen von gegenstaenden mit fluessigem oder pulverfoermigem material
DE7401584U (de) * 1973-04-06 1974-08-22 Mueller E Kg Vorrichtung zum elektrostatischen Überziehen von Gegenständen mit flüssigem oder pulverförmigem Material
GB2092478B (en) * 1981-02-09 1984-08-01 Ici Plc Electrostatic spraying process and apparatus
IE52408B1 (en) * 1981-02-09 1987-10-14 Ici Plc Electrostatic spraying process and apparatus
US6274202B1 (en) * 1996-09-13 2001-08-14 Eurotec Surface Coating Systems, Ltd. Control systems for electrostatic powder spraying apparatus
EP0978319B1 (de) * 1998-08-07 2000-09-20 ABB Research Ltd. Pulversprüheinrichtung mit interner und externer Aufladung

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EP2401090A1 (de) 2012-01-04
FR2942415B1 (fr) 2011-03-11
FR2942415A1 (fr) 2010-08-27
WO2010097539A1 (fr) 2010-09-02
CN102333599A (zh) 2012-01-25

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