EP0110753A2 - Electrostatic spray-guns - Google Patents

Electrostatic spray-guns Download PDF

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Publication number
EP0110753A2
EP0110753A2 EP83402132A EP83402132A EP0110753A2 EP 0110753 A2 EP0110753 A2 EP 0110753A2 EP 83402132 A EP83402132 A EP 83402132A EP 83402132 A EP83402132 A EP 83402132A EP 0110753 A2 EP0110753 A2 EP 0110753A2
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EP
European Patent Office
Prior art keywords
gun
transformer
particles
circuit
spray
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Granted
Application number
EP83402132A
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German (de)
French (fr)
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EP0110753B1 (en
EP0110753A3 (en
Inventor
José De Fusco Lupo
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to AT83402132T priority Critical patent/ATE33456T1/en
Publication of EP0110753A2 publication Critical patent/EP0110753A2/en
Publication of EP0110753A3 publication Critical patent/EP0110753A3/en
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Publication of EP0110753B1 publication Critical patent/EP0110753B1/en
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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
    • B05B5/0531—Power generators
    • 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
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials

Definitions

  • the present invention relates to improvements made to electrostatic guns.
  • the painting method which consists of spraying an electrostatically charged powder coloring product is used more and more every day to cover multiple types of parts applicable to an infinity of industrial products and to ensure their surface finishing.
  • the powder intended to be deposited on the surface of the part to be covered comes from a reservoir and it is conducted by means of a flexible plastic tube to the applicator gun, which ensures, by means of electrodes, the electrostatic charge of powdered product and projects it towards the part to be covered.
  • the guns for manual application have a handle that allows their manipulation by the user, while the other type has a base so that it can be immobilized at a fixed point, since in this case it is the parts to be paint circulating in front of the gun outlet nozzle.
  • the improvements in question are applied to electrostatic guns which operate with solid particles of sprayed paint particles which are sprayed through a conduit in which these particles are electrically charged by means of a generator. high voltage combined with a multiplier circuit, the whole being excited by an oscillator circuit.
  • the gun is made up of two interchangeable parts which are interconnected, one of which includes the oscillator circuit, the means of connection with the particle drive device and the means of connection with the device for supplying paint particles in powder.
  • the other part of the gun has the voltage multiplier circuit and the electrodes which electrically charge the particles as they pass through the expulsion duct.
  • a dispersion nozzle was provided at the outlet of the expulsion conduit. Between these two parts are located the complementary fixing means and the connection means between the multiplier circuit and the output of the transformer.
  • the part of the pistol which includes the oscillator circuit and the transformer is optionally provided with an operating handle or with an automatic operation fixing base with fixed station, this part being provided in both cases with regulation means. flow rate of the particle drive device, and being provided with connection means between the output of the transformer and the input of the multiplier circuit.
  • the part of the gun which comprises the multiplier circuit is constituted by a cylindrical body provided with a fixing sleeve on the other part and it is provided with axial connection means at the outlet of the transformer.
  • the cylindrical body is provided with a passage orifice for the particles of powder paint and has a passage conduit for the particle entrainment device, which opens into an annular chamber which, through diagonal transverse orifices eccentric, communicates with the orifice for the passage of the powder paint particles, which subjects the latter to turbulence at the outlet of a terminal nozzle of divergent conical opening.
  • the interchangeable parts 1 and 2 of the gun there are the interchangeable parts 1 and 2 of the gun, the transformer 3, the oscillator circuit 4, the connection means 5 to the particle drive device, the connection means 6 to the supply device for particles, the voltage multiplier circuit 7, the electrodes 8, the expulsion duct 9, the dispersion nozzle 10, the handle 11; the fixing base 12, the flow regulator 13, the axial connection means 14, the sleeve 15, the axial connection means 16, the conduit 17, the annular chamber 18, the transverse orifices 19, the exhaust front 20 , the trigger 21, the contacts 22 the axial connectors 23, the orifices 24, the threaded orifice 25 and the screw 26.
  • the gun is formed by two interchangeable parts 1 and 2.
  • Part 1 comprises the transformer 3, the oscillator circuit 4, the connection means 5 to the particle drive device constituted by a compressed air generator and the connection means 6 to the powder paint particle supply device.
  • Part 2 includes the voltage multiplier circuit 7 and the electrodes 8. This part 2 is provided with a longitudinal central orifice which constitutes the expulsion duct 9 and a expulsion duct 17 for the air injected by the particle drive. At the free end of part 2 is connected the dispersion nozzle 10.
  • the two parts 1 and 2 are interconnected by the sleeve 15 and on the connection surface have been provided the axial connection means 14 and 16, for supplying the transformer through the voltage multiplier circuit 7.
  • Part 1 is provided with the handle 11 to facilitate the handling of the pistol or is provided with a 4q fixing base 12 when the pistol is mounted in an automatic installation. In both cases, on the passage of the air line, a regulator 13 of the flow rate provided by the driving device has been provided. particle particles.
  • the part 1 When the part 1 is provided with a handle, it comprises a trigger 21 for actuating the system by means of the contacts 22; also, between the line of paint particles and the air line, there is provided a threaded orifice 25 closed by the screw 26.
  • the orifice 25 is located coaxially with respect to the flow regulator 13, so as to that by removing screw 26 you can use the gun with solid bar paint.
  • Part 2 of the gun has a cylindrical configuration, the end of which has a connection cavity for the dispersion nozzle 10, which is provided with axial connectors 23 for supplying the electrodes 8.
  • the nozzle 10 forms an annular chamber 18 in which, through the openings 24, the conduit 17 opens which channels the air coming from the particle drive device.
  • the annular chamber 18 communicates with the annular duct 9 through the transverse orifices 19 whose path is diagonally eccentric to cause air turbulence and produce an appropriate distribution of the paint particles on the surface to be painted. This distribution is facilitated by the divergent conical configuration of the exhaust front 20 that the nozzle 10 has at its free end.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

1. Electrostatic spray-gun of the type operating with solid particles of powdered paint conveyed towards a dispersion nozzle (10) via a duct (9) in which these particles are electrically charged by electrodes (8) fed by means of a voltage multiplication circuit (7), a transformer (3) and an oscillator circuit (4), the spray-gun additionally being provided with means for the connection of the oscillator circuit (4) to an outside power supply and with means (6) for the connection of the said duct (9) to an outside devise for particle feed, the spray-gun being subdivided into two parts (1, 2) which are joined in movable manner and of which a first (1) comprises the oscillator circuit (4), the transformer (3), the means of connecting the oscillator circuit (4) to the outside power supply and the means (6) of connecting the duct (9) to the outside device for particle feed, and has a grip (11) for handling the spray-gun manually, and of which the second (2) comprises the nozzle (10), the electrodes (8) and the voltage multiplication circuit (7), characterized in that it comprises for the first part (1) of the spray-gun a second embodiment which has an attaching base (12) for the automatic operation of the spray-gun in a fixed position and which comprises the same elements as the grip for manual handling, and in that the two parts (1, 2) comprise additional means of mechanical attachment (15) and of axial connection (14, 16), which are the same for the two embodiments of the first part (1), for assembling the first part (1), according to one or the other embodiment in interchangeable manner, and the same second part (2) and for attaching the transformer (3) of the first part (1) to the voltage multiplication circuit (7) of the second part (2) when the two parts (1 and 2) are assembled.

Description

La présente invention concerne des perfectionnements apportés aux pistolets électrostatiques.The present invention relates to improvements made to electrostatic guns.

La méthode de peinture qui consiste à projeter un produit colorant en poudre chargé électrostatiquement est chaque jour plus utilisée pour recouvrir de multiples types de pièces applicables à une infinité de produits industriels et pour assurer leur finissage superficiel. La poudre destinée à être déposée sur la surface de la pièce à recouvrir, provient d'un réservoir et elle est conduite au moyen d'un tube flexible de matière plastique au pistolet applicateur, lequel assure, au moyen d'électrodes, la charge électrostatique du produit en poudre et projette celui-ci vers la pièce à recouvrir.The painting method which consists of spraying an electrostatically charged powder coloring product is used more and more every day to cover multiple types of parts applicable to an infinity of industrial products and to ensure their surface finishing. The powder intended to be deposited on the surface of the part to be covered, comes from a reservoir and it is conducted by means of a flexible plastic tube to the applicator gun, which ensures, by means of electrodes, the electrostatic charge of powdered product and projects it towards the part to be covered.

Fondamentalement, il existe deux types de pistolets. L'un d'eux est prévu pour être employé manuellement et l'autre pour être employé dans des installations automatiques. Les pistolets d'application manuelle comportent une poignée qui permet leur manipulation par l'utilisateur, tandis que l'autre type présente une base pour qu'il puisse être immobilisé en un point fixe, étant donné que dans ce cas ce sont les pièces à peindre qui circulent devant la buse de sortie du pistolet.Basically, there are two types of pistols. One of them is intended to be used manually and the other to be used in automatic installations. The guns for manual application have a handle that allows their manipulation by the user, while the other type has a base so that it can be immobilized at a fixed point, since in this case it is the parts to be paint circulating in front of the gun outlet nozzle.

Ces deux types de pistolets obligent le fabricant à réaliser deux ensembles spécifiques et l'utilisateur doit acquérir deux pistolets complets et indépendants étant donné que l'application de l'un ou l'autre pistolet sera fonction des caractéristiques des pièces à peindre et que dans chaque cas il est plus indiqué d'utiliser l'un ou l'autre de ces deux types.These two types of guns oblige the manufacturer to produce two specific sets and the user must acquire two complete and independent guns since the application of one or the other gun will depend on the characteristics of the parts to be painted and that in in each case it is more advisable to use one or the other of these two types.

Il est évident que la solution idéale consiste à combiner ces deux types de pistolets, et ceci étant le but de l'invention qui nous occupe, le pistolet en question permet d'interchanger la partie dorsale pour obtenir une poignée ou une base de fixation, le reste du pistolet étant commun aux deux types.It is obvious that the ideal solution consists in combining these two types of pistols, and this being the aim of the invention which occupies us, the pistol in question makes it possible to interchange the dorsal part to obtain a handle or a fixing base, the rest of the pistol being common to both types.

A cet effet, les perfectionnements en question sont appliqués à des pistolets électrostatiques qui fonctionnent avec des particules solides de particules de peinture pulvérisée lesquelles sont projetées à travers un conduit dans lequel ces particules sont chargées électriquement au moyen d'un générateur à haute tension combiné avec un circeuit multiplicateur, le tout étant excité par un circuit oscillateur.To this end, the improvements in question are applied to electrostatic guns which operate with solid particles of sprayed paint particles which are sprayed through a conduit in which these particles are electrically charged by means of a generator. high voltage combined with a multiplier circuit, the whole being excited by an oscillator circuit.

Le pistolet est constitué par deux parties interchangeables qui sont reliées entre elles dont l'une comporte le circuit oscillateur, les moyens de connexion avec le dispositif d'entraînement des particules et les moyens de connexion avec le dispositif d'alimentation en particules de peinture en poudre. L'autre partie du pistolet comporte le circuit multiplicateur de tension et les électrodes qui chargent électriquement les particules à leur passage dans le conduit d'expulsion.The gun is made up of two interchangeable parts which are interconnected, one of which includes the oscillator circuit, the means of connection with the particle drive device and the means of connection with the device for supplying paint particles in powder. The other part of the gun has the voltage multiplier circuit and the electrodes which electrically charge the particles as they pass through the expulsion duct.

A la sortie du conduit d'expulsion il a été prévu une buse de dispersion. Entre ces deux parties sont situés les moyens de fixation complémentaires et les moyens de connexion entre le circuit multiplicateur et la sortie du transformateur.At the outlet of the expulsion conduit, a dispersion nozzle was provided. Between these two parts are located the complementary fixing means and the connection means between the multiplier circuit and the output of the transformer.

La partie du pistolet qui comprend le circuit oscillateur et le transformateur est dotée, optativement, d'une poignée de maniement ou d'une base de fixation de fonctionnement automatique à poste fixe, cette partie étant dotée dans les deux cas de moyens de régulation de débit du dispositif d'entraînement des particules, et étant pourvue des moyens de connexion entre la sortie du transformateur et l'entrée du circuit multiplicateur.The part of the pistol which includes the oscillator circuit and the transformer is optionally provided with an operating handle or with an automatic operation fixing base with fixed station, this part being provided in both cases with regulation means. flow rate of the particle drive device, and being provided with connection means between the output of the transformer and the input of the multiplier circuit.

La partie du pistolet qui comprend le circuit multiplicateur est constituée par un corps cylindrique pourvu d'une douille de fixation sur l'autre partie et elle est dotée de moyens de connexion axial à la sortie du transformateur. Le corps cylindrique est pourvu d'un orifice de passage pour les particules de peinture en poudre et présente un conduit de passage pour le dispositif d'entraînement des particules, lequel débouche dans une chambre annulaire qui, à travers d'orifices transversaux de tracé diagonal excentrique, communique avec l'orifice de passage des particules de peinture en poudre, ce qui soumet ces dernières à une turbulence à la sortie d'une buse terminale d'ouverture conique divergente.The part of the gun which comprises the multiplier circuit is constituted by a cylindrical body provided with a fixing sleeve on the other part and it is provided with axial connection means at the outlet of the transformer. The cylindrical body is provided with a passage orifice for the particles of powder paint and has a passage conduit for the particle entrainment device, which opens into an annular chamber which, through diagonal transverse orifices eccentric, communicates with the orifice for the passage of the powder paint particles, which subjects the latter to turbulence at the outlet of a terminal nozzle of divergent conical opening.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un exemple de réalisation en se référant aux dessins annexés, dans lesquels :

  • - la figure 1 représente une vue de profil en section du pistolet doté d'une poignée, dans laquelle on peut voir les principaux éléments qui constituent l'ensemble.
  • - La figure 2 représente une vue de profil en section de la partie dorsale du pistolet, qui constitue une base de fixation.
  • - La figure 3 représente une vue en perspective de la buse de dispersion.
Other characteristics and advantages of the invention will be better understood on reading the description which follows of an exemplary embodiment with reference to the appended drawings, in which:
  • - Figure 1 shows a sectional side view of the gun with a handle, in which we can see the main elements that make up the whole.
  • - Figure 2 shows a sectional side view of the back part of the gun, which constitutes a fixing base.
  • - Figure 3 shows a perspective view of the dispersion nozzle.

Dans les figures en question, on remarque les parties interchangeables 1 et 2 du pistolet, le transformateur 3, le circuit oscillateur 4, les moyens de connexion 5 au dispositif d'entraînement des particules, les moyens de connexion 6 au dispositif d'alimentation en particules, le circuit multiplicateur de tension 7, les électrodes 8, le conduit d'expulsion 9, la buse de dispersion 10, la poignée 11; la base de fixation 12, le régulateur de débit 13, les moyens de connexion axiale 14, la douille 15, les moyens de connexion axiale 16, le conduit 17, la chambre annulaire 18, les orifices transversaux 19, le front d'échappement 20, la gachette 21, les contacts 22 les connecteurs axiaux 23, les orifices 24, l'orifice fileté 25 et la vis 26.In the figures in question, there are the interchangeable parts 1 and 2 of the gun, the transformer 3, the oscillator circuit 4, the connection means 5 to the particle drive device, the connection means 6 to the supply device for particles, the voltage multiplier circuit 7, the electrodes 8, the expulsion duct 9, the dispersion nozzle 10, the handle 11; the fixing base 12, the flow regulator 13, the axial connection means 14, the sleeve 15, the axial connection means 16, the conduit 17, the annular chamber 18, the transverse orifices 19, the exhaust front 20 , the trigger 21, the contacts 22 the axial connectors 23, the orifices 24, the threaded orifice 25 and the screw 26.

Le pistolet est formé par deux parties interchangeables 1 et 2. La partie 1 comporte le transformateur 3, le circuit oscillateur 4, les moyens de connexion 5 au dispositif d'entraînement des particules constitué par un générateur d'air comprimé et les moyens de connexion 6 au dispositif d'alimentation en particules de peinture en poudre.The gun is formed by two interchangeable parts 1 and 2. Part 1 comprises the transformer 3, the oscillator circuit 4, the connection means 5 to the particle drive device constituted by a compressed air generator and the connection means 6 to the powder paint particle supply device.

La partie 2 comporte le circuit multiplicateur de tension 7 et les électrodes 8. Cette partie 2 est pourvue d'un orifice central longitudinal qui constitue le conduit d'expulsion 9 et d'un conduit d'expulsion 17 de l'air injecté par le dispositif d'entraînement des particules. A l'extrémité libre de la partie 2 est reliée la buse de dispersion 10.Part 2 includes the voltage multiplier circuit 7 and the electrodes 8. This part 2 is provided with a longitudinal central orifice which constitutes the expulsion duct 9 and a expulsion duct 17 for the air injected by the particle drive. At the free end of part 2 is connected the dispersion nozzle 10.

Les deux parties 1 et 2 sont reliées entre elles par la douille 15 et sur la surface de liaison ont été prévus les moyens de connexion axiale 14 et 16, pour alimenter le transfor mateur à travers le circuit multiplicateur de tension 7.The two parts 1 and 2 are interconnected by the sleeve 15 and on the connection surface have been provided the axial connection means 14 and 16, for supplying the transformer through the voltage multiplier circuit 7.

La partie 1 est dotée de la poignée 11 pour faciliter le maniement du pistolet ou est dotée d'une base 4q fixation 12 lorsque le pistolet est monté dans une installation automatique. Dans les deux cas, sur le passage de la conduite d'air, il a été prévu un régulateur 13 du débit fourni par le dispositif d'entraînement de particules.Part 1 is provided with the handle 11 to facilitate the handling of the pistol or is provided with a 4q fixing base 12 when the pistol is mounted in an automatic installation. In both cases, on the passage of the air line, a regulator 13 of the flow rate provided by the driving device has been provided. particle particles.

Lorsque la partie 1 est dotée de poignée, elle comporte une gachette 21 d'actionnement du système au moyen des contacts 22 ; également, entre la conduite des particules de peinture et la conduite d'air, il a été prévu un orifice fileté 25 obturé par la vis 26. L'orifice 25 est situé co- axialement par rapport au régulateur de débit 13, de façon à ce qu'en retirant la vis 26 on puisse utiliser le pistolet avec de la peinture solide en barre.When the part 1 is provided with a handle, it comprises a trigger 21 for actuating the system by means of the contacts 22; also, between the line of paint particles and the air line, there is provided a threaded orifice 25 closed by the screw 26. The orifice 25 is located coaxially with respect to the flow regulator 13, so as to that by removing screw 26 you can use the gun with solid bar paint.

La partie 2 du pistolet présente une configuration cylindrique dont l'extrémité est dotée d'une cavité de liaison de la buse de dispersion 10, laquelle est dotée des connecteurs axiaux 23 d'alimentation des électrodes 8. La buse 10 forme une chambre annulaire 18 dans laquelle, à travers les orifices 24, débouche le conduit 17 qui canalise l'air provenant du dispositif d'entraînement des particules. La chambre annulaire 18 communique avec le conduit annulaire 9 à travers les orifices transversaux 19 dont le tracé est diagonalement excentrique pour provoquer une turbulence d'air et produire une distribution appropriée des particules de peinture sur la surface à peindre. Cette distribution est facilitée par la configuration conique divergente du front d'échappement 20 que la buse 10 présente à son extrémité libre.Part 2 of the gun has a cylindrical configuration, the end of which has a connection cavity for the dispersion nozzle 10, which is provided with axial connectors 23 for supplying the electrodes 8. The nozzle 10 forms an annular chamber 18 in which, through the openings 24, the conduit 17 opens which channels the air coming from the particle drive device. The annular chamber 18 communicates with the annular duct 9 through the transverse orifices 19 whose path is diagonally eccentric to cause air turbulence and produce an appropriate distribution of the paint particles on the surface to be painted. This distribution is facilitated by the divergent conical configuration of the exhaust front 20 that the nozzle 10 has at its free end.

Bien entendu, diverses modifications peuvent être apportées par l'homme de l'art aux dispositifs ou procédés qui viennent d'être décrits uniquement à titre d'exemple non limitatif sans sortir du cadre de l'invention.Of course, various modifications can be made by those skilled in the art to the devices or methods which have just been described solely by way of non-limiting example without departing from the scope of the invention.

Claims (3)

1. Perfectionnements apportés aux pistolets électrostatiques, du type qui fonctionne avec des particules solides de peinture pulvérisée entraînées à travers un conduit dans lequel ces particules sont chargées par un générateur à haute tension combiné avec un circuit multiplicateur, le tout étant excité par un circuit oscillateur, caractérisés essentiellement en ce que le pistolet est constitué par deux parties interchangeables qui sont reliées entre elles, dont l'une comporte le transformateur, le circuit oscillateur et les moyens de connexion à l'impulseur de particules ainsi que le dispositif d'alimentation en particules de peinture, tandis que l'autre partie comporte le circuit multiplicateur de tension et les électrodes qui chargent électriquement les particules à leur passage dans le conduit d'expulsion dont l'orifice de sortie est dotée d'une buse de dispersion, étant prévu, entre ces deux parties, des moyens de fixation complémentaires et des moyens de liaison entre le circuit multiplicateur et la sortie du transformateur.1. Improvements to electrostatic guns, of the type which works with solid particles of sprayed paint entrained through a conduit in which these particles are charged by a high-voltage generator combined with a multiplier circuit, the whole being excited by an oscillator circuit , essentially characterized in that the gun consists of two interchangeable parts which are interconnected, one of which comprises the transformer, the oscillator circuit and the means of connection to the particle impeller as well as the device for supplying particles of paint, while the other part includes the voltage multiplier circuit and the electrodes which electrically charge the particles as they pass through the expulsion duct, the outlet of which is provided with a dispersion nozzle, being provided , between these two parts, complementary fixing means and connecting means between the circuit m multiplier and transformer output. 2. Perfectionnements apportés aux pistolets électrostatiques selon la revendication précédente, caractérisés essentiellement en ce que la partie du pistolet qui comprend le circuit oscillant et le transformateur est dotée optativement d'une poignée pour son maniement ou d'une base de fixation pour son fonctionnement automatique à poste fixe, étant pourvue dans tous les cas de moyens de régulation de débit pour le dispositif d'entraînement des particules et étant dotée de moyens de connexion axiale entre la sortie du transformateur et l'entrée du circuit multiplicateur.2. Improvements made to the electrostatic guns according to the preceding claim, characterized essentially in that the part of the gun which comprises the oscillating circuit and the transformer is optionally provided with a handle for its handling or with a fixing base for its automatic operation. fixed station, being provided in all cases with flow control means for the particle drive device and being provided with axial connection means between the output of the transformer and the input of the multiplier circuit. 3. Perfectionnements apportés aux pistolets électrostatiques selon la revendication précédente, caractérisés essentiellement en ce que la partie du pistolet qui comprend le circuit multiplicateur est constituée par un corps cylindrique pourvu d'une douille de fixation sur l'autre partie et est dotée de moyens de connexion axiale à la sortie du transformateur, le corps cylindrique étant doté d'un orifice de passage pour les particules de peinture en poudre et d'un conduit de passage pour le dispositif d'entraînement des particules, ce conduit débouchant dans une chambre annulaire qui, à travers d'orifices transversaux de tracé diagonal excentrique, communique avec l'orifice de passage des particules de peinture en poudre, ce qui soumet ces dernières à une turbulence à leur sortie d'une buse terminale d'échappement de forme conique divergente.3. Improvements made to the electrostatic guns according to the preceding claim, characterized essentially in that the part of the gun which comprises the multiplier circuit is constituted by a cylindrical body provided with a sleeve for fixing on the other part and is provided with means axial connection at the outlet of the transformer, the cylindrical body being provided with a passage orifice for the particles of powder paint and a passage conduit for the particle drive device, this conduit opening into an annular chamber which , through transverse orifices of eccentric diagonal line, communicates with the orifice for the passage of the powdered paint particles, which subjects the latter to turbulence as they exit from an exhaust terminal nozzle of divergent conical shape.
EP83402132A 1982-11-03 1983-11-02 Electrostatic spray-guns Expired EP0110753B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402132T ATE33456T1 (en) 1982-11-03 1983-11-02 ELECTROSTATIC SPRAY GUNS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES517085 1982-11-03
ES517085A ES8400258A1 (en) 1982-11-03 1982-11-03 Electrostatic spray-guns.

Publications (3)

Publication Number Publication Date
EP0110753A2 true EP0110753A2 (en) 1984-06-13
EP0110753A3 EP0110753A3 (en) 1985-10-02
EP0110753B1 EP0110753B1 (en) 1988-04-13

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ID=8484867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402132A Expired EP0110753B1 (en) 1982-11-03 1983-11-02 Electrostatic spray-guns

Country Status (4)

Country Link
EP (1) EP0110753B1 (en)
AT (1) ATE33456T1 (en)
DE (1) DE3376256D1 (en)
ES (1) ES8400258A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383030A1 (en) 1989-02-14 1990-08-22 ITW Gema AG Sprayer for electrostatic spray-coating
WO2005018823A3 (en) * 2003-08-18 2005-09-22 Nordson Corp Spray applicator for particulate material
US7793869B2 (en) 2003-08-18 2010-09-14 Nordson Corporation Particulate material applicator and pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545885C1 (en) * 1985-12-23 1993-03-04 Kopperschmidt Mueller & Co Electrostatic spray gun
DE3904437A1 (en) * 1989-02-14 1990-08-16 Gema Ransburg Ag SPRAY GUN FOR ELECTROSTATIC SPRAY COATING
GB8916674D0 (en) * 1989-07-21 1989-09-06 Electrostatic Plant Systems Li Powder coating apparatus
GB8916675D0 (en) * 1989-07-21 1989-09-06 Electrostatic Plant Systems Li Powder coating apparatus
DE4141663C2 (en) * 1991-12-17 1996-09-19 Wagner Int Electrostatic powder coating gun

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Publication number Priority date Publication date Assignee Title
US3731145A (en) 1970-11-23 1973-05-01 Nordson Corp Electrostatic spray gun with self-contained miniaturized power pack integral therewith

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
CH623489A5 (en) * 1977-12-08 1981-06-15 Gema Ag
DE3014133C2 (en) * 1980-04-12 1984-04-19 Ransburg-Gema AG, 9015 St.Gallen Device for atomizing powder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731145A (en) 1970-11-23 1973-05-01 Nordson Corp Electrostatic spray gun with self-contained miniaturized power pack integral therewith

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383030A1 (en) 1989-02-14 1990-08-22 ITW Gema AG Sprayer for electrostatic spray-coating
WO2005018823A3 (en) * 2003-08-18 2005-09-22 Nordson Corp Spray applicator for particulate material
EP2179795A1 (en) 2003-08-18 2010-04-28 Nordson Corporation Spray applicator for particulate material
US7793869B2 (en) 2003-08-18 2010-09-14 Nordson Corporation Particulate material applicator and pump

Also Published As

Publication number Publication date
ES517085A0 (en) 1983-10-16
EP0110753B1 (en) 1988-04-13
EP0110753A3 (en) 1985-10-02
DE3376256D1 (en) 1988-05-19
ATE33456T1 (en) 1988-04-15
ES8400258A1 (en) 1983-10-16

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