EP2401090A1 - Projecteur électrostatique comportant des électrodes mobiles et procédé de projection électrostatique mettant en oeuvre un tel projecteur - Google Patents
Projecteur électrostatique comportant des électrodes mobiles et procédé de projection électrostatique mettant en oeuvre un tel projecteurInfo
- Publication number
- EP2401090A1 EP2401090A1 EP10709898A EP10709898A EP2401090A1 EP 2401090 A1 EP2401090 A1 EP 2401090A1 EP 10709898 A EP10709898 A EP 10709898A EP 10709898 A EP10709898 A EP 10709898A EP 2401090 A1 EP2401090 A1 EP 2401090A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrodes
- projector
- electrode
- compact configuration
- movable
- 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
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 10
- 238000007590 electrostatic spraying Methods 0.000 title 2
- 239000011248 coating agent Substances 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 34
- 239000004020 conductor Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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
- B05B5/053—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 implementing such a projector.
- Conventional spraying by means of an electrostatic projector is used to apply a coating product to objects to be coated, such as motor vehicle bodies.
- 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.
- 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 generally mounted at the end of a multi-axis robot arm to be moved facing the outer surfaces of a hollow part, such as an automobile body.
- 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 .
- the subject of the invention is a coating product projector comprising:
- the projector being characterized in that it further comprises means for articulating all or part of the electrodes relative to the body, the electrodes being movable between a compact configuration, in which the electrodes together occupy a first volume, and at least an expanded configuration, wherein the electrodes together occupy a second volume, the first volume being less than the second volume.
- 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.
- each electrode in the compact configuration, an end portion of each electrode is disposed at a first distance, in a radial direction, from a longitudinal axis of the body and, in one of the deployed configurations, the portion terminal of each electrode is disposed at a second distance, in the radial direction, from the longitudinal axis of the body, the first distance being less than the second distance;
- the hinge means allow pivoting of the movable electrodes relative to the body, each along a pivot axis which extends substantially upstream of the spray member and near an outer surface of the body;
- the articulation means are integral with the body
- the projector comprises at least three movable electrodes, preferably eight, the movable electrodes being evenly distributed around the spray member;
- each mobile electrode comprises a support made of electrically insulating material and at least one electrical conductor housed totally or partially in the support; -
- Each movable electrode comprises two independent electrical conductors arranged to be in electrical contact when the corresponding electrode is in expanded configuration and to be disjoint when the corresponding electrode is in a compact configuration;
- the moving electrodes extend in contact and along the body in the compact configuration
- the movable electrodes have a median portion of curved shape so as to follow the curvature of the body
- the projector further comprises at least one actuator for moving the moving electrodes between the compact configuration and the deployed configuration
- the projector further comprises at least one proximity sensor which is arranged to be actuated when moving at least one electrode between the deployed configuration and the compact configuration.
- the subject of the invention is a method for projecting a coating product using a projector as described above and comprising the following steps:
- the interruption of the high voltage supply of the moving electrodes is synchronized with the displacement of the moving electrodes towards the compact configuration.
- FIG. 1 is a perspective view of a projector according to the invention, placed in an expanded configuration
- FIG. 2 is a side view, on a smaller scale, the projector of Figure 1;
- FIG. 3 is a front view, on the scale of FIG. 2, of the projector of FIGS. 1 and 2; and FIG. 4 is a perspective view, at a different angle from FIG. 1, of the projector of FIG. 1 placed in a compact configuration.
- FIG. 1 shows a projector P comprising a body 2 which can be fixed on a multi-axis robot arm R, the envelope of which is symbolized in phantom in FIG. 1.
- the body 2 At the interface between the robot R and the projector P, the body 2 has a laying surface 22 which is in the form of a disk and which houses connectors not shown for supplying the projector P with coating material, electrical current, compressed air, etc. These connectors are connected to corresponding conduits 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 poses 22, while the adjective “proximal” designates an element that is close to it.
- 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 Xi with respect to the body 2.
- the spraying member 1 has a ridge 12 of circular shape, where the coating product, in 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 Xi.
- 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 Xi, that is to say around the spraying 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 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 in FIG. and the proximal portions 321 to 381 and medians 322 to 382 are visible in Figure 1.
- Each electrode 31 to 38 has substantially the shape of a finger extending generally in a direction transverse to the axis Xi.
- Each of the proximal portions 31 1 to 381 has a generally rectilinear 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 shown in FIG. 1 between a main direction X331 of the proximal portion 331 and a main direction X333 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 in FIG. 3, which separates two adjacent electrodes 31 to 38 is measured between the radial direction Y333 of the distal portion 333 of the electrode and the radial direction Y 323 of the distal portion 323 of the electrode. 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.
- FIG. 1 shows the terminal portion of such an electrical conductor with the reference 350 at the point of 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 distal 353 of the electrode 35.
- 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 are made 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.
- 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 in Figures 1 and 4.
- Each of the pivot axes T 4 i, 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 4 i 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 Xi.
- 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 is effected between a compact configuration, which is shown in FIG. 4, and an expanded configuration, which is represented in FIGS. 1 to 3.
- the electrodes 31 to 38 occupy together a first volume V 4 shown in phantom in FIG. 4.
- the electrodes 31 to 38 together occupy a second volume Vi, which is represented in phantom lines at FIG. 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 smaller 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 top B21, visible in FIG. 1, of a frustoconical downstream portion. distal part 21.
- each electrode 31 to 38 is disposed at a first distance from a longitudinal axis of the body 2 formed by the axis Xi.
- This first distance is represented by the reference 135 for the electrode 35.
- the first distance 135 is measured in a radial direction Y353 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 Xi.
- the end portions of the electrodes 31 to 38 are disposed on a circle C of axis X1 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.
- the terminal portion of each electrode 31-38 is disposed at a second distance from the longitudinal axis of the body 2 formed by the axis Xi. This second distance is represented in FIGS. 1 and 3 by the reference 133 for electrode 33.
- the second distance 133 is measured in a radial direction Y333 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 Xi between the edge 12 and each electrode 31 to 38 is relatively small, since it is about 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 31 1, 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 protruding part of the body of the sprayer or a crank-crank 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 expanded configuration shown in FIGS. 1 to 3, to electrostatically spray a coating product on the outer surfaces of a hollow part, such as an automobile body.
- 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 Figure 4, has radial dimensions reduced relative to its radial dimensions in expanded configuration, which allows to project the coating product on the inner surfaces of the automobile bodywork, particularly on those that are difficult to access because they are located in a small 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. In this variant, 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)
Abstract
Description
Claims
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 true EP2401090A1 (fr) | 2012-01-04 |
EP2401090B1 EP2401090B1 (fr) | 2015-04-08 |
Family
ID=40680129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10709898.0A Active EP2401090B1 (fr) | 2009-02-24 | 2010-02-23 | Projecteur électrostatique comportant des électrodes mobiles et procédé de projection électrostatique mettant en oeuvre un tel projecteur |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2401090B1 (fr) |
CN (1) | CN102333599A (fr) |
FR (1) | FR2942415B1 (fr) |
WO (1) | WO2010097539A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10413919B2 (en) | 2013-11-12 | 2019-09-17 | Sames Kremlin | Electrostatic sprayer of coating product and projection assembly comprising such a sprayer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3275559B1 (fr) * | 2016-07-27 | 2021-09-15 | Exel Industries | Système de revêtement avec un atomiseur à ultrasons et un champ électrostatique |
DE102017113180A1 (de) * | 2017-06-14 | 2018-12-20 | Eisenmann Se | Elektrostatischer Zerstäuber zur elektrostatischen Beschichtung von Werkstücken |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3936045A (en) | 1973-02-26 | 1976-02-03 | Ricoh Co., Ltd. | Sheet stripping device for copying apparatus |
DE7401584U (de) * | 1973-04-06 | 1974-08-22 | Mueller E Kg | Vorrichtung zum elektrostatischen Überziehen von Gegenständen mit flüssigem oder pulverförmigem Material |
DE2402209A1 (de) * | 1974-01-17 | 1975-07-31 | Mueller Ernst Kg | Vorrichtung zum elektrostatischen ueberziehen von gegenstaenden mit fluessigem oder pulverfoermigem 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 |
CN1096302C (zh) * | 1996-09-13 | 2002-12-18 | 友罗泰克表面涂层系统有限公司 | 静电粉末喷涂设备及其控制方法 |
EP0978319B1 (fr) * | 1998-08-07 | 2000-09-20 | ABB Research Ltd. | Dispositif de pulvérisation de poudre à charge externe et interne |
-
2009
- 2009-02-24 FR FR0951167A patent/FR2942415B1/fr not_active Expired - Fee Related
-
2010
- 2010-02-23 EP EP10709898.0A patent/EP2401090B1/fr active Active
- 2010-02-23 CN CN2010800089265A patent/CN102333599A/zh active Pending
- 2010-02-23 WO PCT/FR2010/050303 patent/WO2010097539A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010097539A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10413919B2 (en) | 2013-11-12 | 2019-09-17 | Sames Kremlin | Electrostatic sprayer of coating product and projection assembly comprising such a sprayer |
Also Published As
Publication number | Publication date |
---|---|
CN102333599A (zh) | 2012-01-25 |
FR2942415B1 (fr) | 2011-03-11 |
EP2401090B1 (fr) | 2015-04-08 |
WO2010097539A1 (fr) | 2010-09-02 |
FR2942415A1 (fr) | 2010-08-27 |
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