EP1867396B1 - Spray gun for painting using aerosol cartridges - Google Patents

Spray gun for painting using aerosol cartridges Download PDF

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Publication number
EP1867396B1
EP1867396B1 EP06300580A EP06300580A EP1867396B1 EP 1867396 B1 EP1867396 B1 EP 1867396B1 EP 06300580 A EP06300580 A EP 06300580A EP 06300580 A EP06300580 A EP 06300580A EP 1867396 B1 EP1867396 B1 EP 1867396B1
Authority
EP
European Patent Office
Prior art keywords
channel
paint
needle
nozzle
valve
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.)
Not-in-force
Application number
EP06300580A
Other languages
German (de)
French (fr)
Other versions
EP1867396A1 (en
Inventor
Claude Bernard Michelot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soppec
Original Assignee
Soppec
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soppec filed Critical Soppec
Priority to AT06300580T priority Critical patent/ATE449016T1/en
Priority to DE602006010527T priority patent/DE602006010527D1/en
Priority to EP06300580A priority patent/EP1867396B1/en
Publication of EP1867396A1 publication Critical patent/EP1867396A1/en
Application granted granted Critical
Publication of EP1867396B1 publication Critical patent/EP1867396B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B65D83/207—Actuators comprising a manually operated valve and being attachable to the aerosol container, e.g. downstream a valve fitted to the container; Actuators associated to container valves with valve seats located outside the aerosol container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B65D83/201—Lever-operated actuators
    • B65D83/202—Lever-operated actuators combined with a hand grip

Definitions

  • the present invention relates to a spray gun device using aerosol cartridges suitable for spraying a paint on a surface to be painted from a pressurized aerosol container.
  • the spray guns generally use firstly a source of external pressure air connected to a first channel of the gun and a container, containing paint, connected to a second channel of the gun, the paint being driven and sprayed by venturi effect, by the pressure of the air passing through the first channel, at a nozzle disposed in the first channel and into which the second channel opens.
  • the object of the present invention is the direct adaptation of a gun to a paint pressure aerosol container in order to provide a self-contained spray gun device from any external pressure source.
  • GB 1,348,270 discloses a gun device using aerosol cartridges according to the preamble of claim 1.
  • the present invention provides a spray gun device according to claim 1.
  • the spray paint device according to the invention is shown in view from the outside of the figure 1 . It comprises a pistol 1, provided with means for fixing the pistol, constituted by a cup 2, on a receptacle 5.
  • the container is a known aerosol container container containing a pressure paint and provided with a paint diffusion valve which is operated vertically to expel the paint from the container 5 during a pressing on the valve.
  • the device according to the invention comprises a trigger actuating device 9 which will be more precisely described below below.
  • the device comprises a nozzle 6 on the front of the gun, above the gun attachment means on the container.
  • the nozzle is connected to the valve of the container 5 by a spray channel 3 of the paint as shown more particularly in FIG. figure 6 .
  • the figure 3 represents the gun 1 without the container 5 which allows to see the trigger 9 arranged in a handle 25 allowing the painter to hold and operate the gun 1.
  • the figure 4 represents the various elements constituting the spray gun device of the invention namely two half-shells 1a, 1b forming the body of the gun 1, a needle 7 and a device for operating the trigger needle comprising a trigger 9 and a connecting element 8, an actuator device 10 of the valve of the container 5, a diffuser body 11 in which a first portion of a passage channel of the paint is produced and in which the needle 7 slides, a nozzle 28 comprising a second portion of the channel and of which the end forms a spray nozzle of the paint, a cover 29 for retaining the nozzle 28 in the gun, a device for clamping and sealing an inlet area of the needle 7 in the diffuser body 11 , having a nut 26, in which a passage opening of the needle is made, an O-ring 30, the nut 26 coming to apply and tighten on a thread 27 around the opening of passage of the needle in the diffuser body 11 by trapping the seal.
  • adjustable means 16, 18, 19 of abutment and stop of the trigger operating device comprising a stop rod 16, an adjusting wheel 18 and a thread 19 on the rod allowing, in cooperation with an internal thread made in the half-shells, to advance or retreat more or less the stop rod forming a stop in a rear longitudinal direction for the operating device.
  • the paint under pressure in the tank 5 exits through the valve 4, passes through a conduit 12 of the valve actuator device, passes through the channel 3 passing through the diffuser body 11 and through the nozzle 28 and is sprayed through the nozzle 6.
  • the channel is formed on the one hand in the diffuser body 11 and on the other hand in the nozzle 28 which may be an interchangeable nozzle provided with various nozzle shapes 6.
  • the diffuser body 11 is also called the end-cap body, the end-piece 28, retained by the cap 29, is partly lodged in the front end of the body 11 to continue the channel 3.
  • the device according to the invention comprises means for opening / closing the channel controlled by the triggering device 8, 9.
  • the opening / closing means of the channel comprise the needle 7, which enters the channel through the open rear end of the tip holder body 11 and is axially displaceable in the channel 3 between a closed position of the channel for which a section of the needle closes a passage of the channel between the valve 4 and the nozzle 6, at the intersection of the duct 12 made in an actuator device 10 of the valve 4, and an open position of the channel, for which the needle 7 releases the passage in the channel 3 between the valve 4 and the nozzle 6.
  • the body 11 nozzle holder 28 of nozzle 6 is provided with a receiving housing of a distal end of the actuator device 10 of the valve, device provided with the conduit 12 of communication of the valve 4 with the channel 3.
  • the actuator device 10 is made in the form of a tube perpendicular to the direction of the channel and has a flange 14 sealing against the end of the valve 4.
  • the diffusion circuit of the paint is thus a circuit passing through the conduit 12, opening into the channel 3 by a hole 13 made in the body 11 end cap and ending at the front end of the endpiece by the nozzle outlet 6.
  • This diffusion circuit is a sealed circuit outside the nozzle outlet 6.
  • the conduit 12 intersects the channel 3 at the level of the communication light 13 which constitutes the passage closed or left free by the needle when it is operated by the operating device.
  • the needle closes the passage when it is advanced in the channel 3 and leaves the free passage when it is moved back into the channel and releases the light 13.
  • This obturation of the passage constituted by the light is carried out according to the example by a recess at the level of the central section of the needle 7.
  • FIG. 8A and 8B The closing and opening positions of the channel are represented respectively at Figures 8A and 8B showing a detail of the opening and closing means of the channel and in particular the position of the recess 31 of the needle 7 relative to the light 13 in the opening and closing phases of the channel.
  • valve actuator device 10 and the fixing means 2 are arranged to hold the valve in the open position as soon as the gun is attached to the container.
  • the use of the gun is simplified since the container becomes a simple gun loading cartridge, the valve, held in the open position by the actuator device, does not act on the flow of paint that is set by the needle .
  • This embodiment of the device by replacing the operation of the valve 4 by a maneuvering device integrated in the gun body is permitted due to the realization of the diffusion circuit sealed circuit.
  • the triggering operating device comprises a detent 9, integral with a connecting element 8 between the trigger 9 and the needle 7, the connecting element itself being provided with a support 14 of the needle.
  • the maneuvering device further comprises means 15 for returning the needle in the closed position of the channel constituted by the embodiment represented by a spiral spring disposed between the rear of the connecting element and a stop made in the half-shells.
  • the device comprises adjustable means 16, 18, 19 of abutment and stop of the trigger operating device.
  • adjustable means allow, by screwing the wheel, first to push the connecting element forward and thus to push the needle 7 in the channel to close the passage 13 and, secondly, to prevent the operation of the trigger 9 which is a safety against inadvertent triggering of the gun.
  • these means allow to adjust the spray paint delivered by the nozzle as will be seen below.
  • the needle 7 has an end forming, in the nozzle 6, a needle 17 of conformation of the jet delivered by the nozzle 6.
  • This end of the needle 7 is according to the example of tapered conical shape and complementary profile of the internal profile of the channel at the tip 28. This means that the more the needle is advanced in the channel, the more the beam of paint will be diffuse and the needle is back in the channel more the paint beam is going to be thick.
  • the adjustable means 16, 18, 19, more particularly represented in FIG. figure 7 are arranged to allow adjustment of the stroke of the needle in the nozzle so as to adjust the jet delivered by the nozzle.
  • the operator unscrews the knob 18 to obtain an abutment position of the rod 16 corresponding, when pressing the trigger, the jet it desires.
  • the figure 6 details the means for fixing the gun on the container.
  • This means comprise a cup 2 provided with a skirt provided with a collar 20 for snapping on a lip 21 for crimping a dome 22 and a valve holder 34 of the container.
  • the change of the container is very simple since it is sufficient to pull an empty container down to disengage the collar 20 of the lip 21 and separate the container from the gun, and simply push the full container to the up against the flange until snap of the flange 20 with the lip 21 to equip the gun with a new container.
  • the cup 2 has a curved outer surface 23 inserted into a complementary opening 24 of the gun body and has a concave internal bearing surface 33 on the dome, this inner face having a support rim 32 on the lip 21, the cup 2 forming an adapter interface device between the gun 1 and the container 5 which allows by a simple change of the cup to adapt the gun to containers of shape, diameter, valve height or different dome.

Abstract

The device has a spray gun (1) with a spray gun fixation unit for fixing the spray gun on an aerosol container containing a pressurized paint. The device has a paint pulverizing channel (3) in communication with an outlet valve (4) of the container and with a paint pulverizing nozzle (6). Channel opening/closing units are controlled by detent operating devices (8, 9). The valve has an actuator device (10), which is made under a shape of a perpendicular tube at direction of the channel, and has a tight support collar on an end of the valve.

Description

La présente invention concerne un dispositif pistolet à peinture utilisant des cartouches aérosols adapté à la pulvérisation d'une peinture sur une surface à peindre à partir d'un récipient aérosol sous pression.The present invention relates to a spray gun device using aerosol cartridges suitable for spraying a paint on a surface to be painted from a pressurized aerosol container.

Les dispositifs pistolets à peinture utilisent généralement d'une part une source d'air sous pression externe raccordée à un premier canal du pistolet et un récipient, contenant de la peinture, raccordé à un second canal du pistolet, la peinture étant entraînée et pulvérisée par effet venturi, par la pression de l'air traversant le premier canal, au niveau d'un gicleur disposé dans le premier canal et dans lequel débouche le second canal.The spray guns generally use firstly a source of external pressure air connected to a first channel of the gun and a container, containing paint, connected to a second channel of the gun, the paint being driven and sprayed by venturi effect, by the pressure of the air passing through the first channel, at a nozzle disposed in the first channel and into which the second channel opens.

La présente invention a pour objet l'adaptation directe d'un pistolet sur un récipient aérosol sous pression pour peinture afin de réaliser un dispositif de pistolet à peinture autonome de toute source de pression externe.The object of the present invention is the direct adaptation of a gun to a paint pressure aerosol container in order to provide a self-contained spray gun device from any external pressure source.

GB 1 348 270 décrit un dispositif pistolet utilisant des cartouches aérosols selon le préambule de la revendication 1. GB 1,348,270 discloses a gun device using aerosol cartridges according to the preamble of claim 1.

Dans ce but, la présente invention prévoit un dispositif pistolet à peinture selon la revendication 1.For this purpose, the present invention provides a spray gun device according to claim 1.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui suit d'un exemple de réalisation non limitatif de l'invention accompagné des dessins qui représentent:

  • en figure 1: un vue de côté externe d'un exemple de réalisation d'un dispositif selon l'invention monté sur un récipient;
  • en figure 2: un vue de face du dispositif de la figure 1;
  • en figure 3: le dispositif comme représenté en figure 2 sans le récipient;
  • en figure 4: une vue en éclaté perspective du dispositif de la figure 1;
  • en figure 5: une vue de côté en coupe du dispositif de la figure 1;
  • en figure 6: une vue agrandie de l'avant du dispositif de la figure 5;
  • en figure 7: une vue agrandie du haut du dispositif de la figure 5;
  • aux figures 8A, 8B: des détails de moyens d'ouverture/fermeture d'un canal du dispositif de la figure 1.
Other features and advantages of the invention will be better understood on reading the description which follows of a non-limiting exemplary embodiment of the invention accompanied by the drawings which represent:
  • in figure 1 : an external side view of an exemplary embodiment of a device according to the invention mounted on a container;
  • in figure 2 : a front view of the device of the figure 1 ;
  • in figure 3 : the device as represented in figure 2 without the container;
  • in figure 4 : an exploded perspective view of the device of the figure 1 ;
  • in figure 5 : a side view in section of the device of the figure 1 ;
  • in figure 6 : an enlarged view of the front of the device of the figure 5 ;
  • in figure 7 : an enlarged view from the top of the device of the figure 5 ;
  • to the Figures 8A, 8B : details of means of opening / closing a channel of the device of the figure 1 .

Le dispositif de peinture à pistolet selon l'invention est représenté en vue de côté extérieure à la figure 1. Il comporte un pistolet 1, muni de moyens de fixation du pistolet, constitués par une coupelle 2, sur un récipient 5.The spray paint device according to the invention is shown in view from the outside of the figure 1 . It comprises a pistol 1, provided with means for fixing the pistol, constituted by a cup 2, on a receptacle 5.

Le récipient est un récipient de type récipient aérosol connu contenant une peinture sous pression et pourvu d'une valve de diffusion de la peinture qui se manoeuvre verticalement pour expulser la peinture du récipient 5 lors d'un un appui sur la valve.The container is a known aerosol container container containing a pressure paint and provided with a paint diffusion valve which is operated vertically to expel the paint from the container 5 during a pressing on the valve.

Le dispositif selon l'invention comporte un dispositif de manoeuvre à détente 9 qui sera plus précisément décrit plus loin ci-dessous.The device according to the invention comprises a trigger actuating device 9 which will be more precisely described below below.

En se référant aux figures 2 et 3, le dispositif comporte une buse 6 sur l'avant du pistolet, au dessus des moyens de fixation du pistolet sur le récipient.Referring to Figures 2 and 3 , the device comprises a nozzle 6 on the front of the gun, above the gun attachment means on the container.

La buse est reliée à la valve du récipient 5 par un canal 3 de pulvérisation de la peinture comme représenté plus particulièrement à la figure 6.The nozzle is connected to the valve of the container 5 by a spray channel 3 of the paint as shown more particularly in FIG. figure 6 .

La figure 3 représente le pistolet 1 sans le récipient 5 ce qui permet de voir la détente 9 disposée dans une poignée 25 permettant au peintre de tenir et de manoeuvrer le pistolet 1.The figure 3 represents the gun 1 without the container 5 which allows to see the trigger 9 arranged in a handle 25 allowing the painter to hold and operate the gun 1.

La figure 4 représente les divers éléments constituant le dispositif pistolet à peinture de l'invention à savoir deux demi-coques 1a, 1b formant le corps du pistolet 1, une aiguille 7 et un dispositif de manoeuvre de l'aiguille à détente comportant une détente 9 et un élément de liaison 8, un dispositif actionneur 10 de la valve du récipient 5, un corps de diffuseur 11 dans lequel une première partie d'un canal de passage de la peinture est réalisé et dans lequel coulisse l'aiguille 7, un embout 28 comportant une seconde partie du canal et dont l'extrémité forme une buse de diffusion de la peinture, un capot 29 de retenue de l'embout 28 dans le pistolet, un dispositif de serrage et d'étanchéité d'une zone d'entrée de l'aiguille 7 dans le corps de diffuseur 11, comportant un écrou 26, dans lequel une ouverture de passage de l'aiguille est réalisée, un joint torique 30, l'écrou 26 venant s'appliquer et se serrer sur un filetage 27 autour de l'ouverture de passage de l'aiguille dans le corps de diffuseur 11 en emprisonnant le joint.The figure 4 represents the various elements constituting the spray gun device of the invention namely two half-shells 1a, 1b forming the body of the gun 1, a needle 7 and a device for operating the trigger needle comprising a trigger 9 and a connecting element 8, an actuator device 10 of the valve of the container 5, a diffuser body 11 in which a first portion of a passage channel of the paint is produced and in which the needle 7 slides, a nozzle 28 comprising a second portion of the channel and of which the end forms a spray nozzle of the paint, a cover 29 for retaining the nozzle 28 in the gun, a device for clamping and sealing an inlet area of the needle 7 in the diffuser body 11 , having a nut 26, in which a passage opening of the needle is made, an O-ring 30, the nut 26 coming to apply and tighten on a thread 27 around the opening of passage of the needle in the diffuser body 11 by trapping the seal.

Sur la figure 4 sont représentés en outre des moyens réglables 16, 18, 19 de butée et d'arrêt du dispositif de manoeuvre à détente, ces moyens comportant une tige d'arrêt 16, une molette de réglage 18 et un filetage 19 sur la tige permettant, en coopération avec un filetage interne réalisé dans les demi-coques, d'avancer ou de reculer plus ou moins la tige d'arrêt formant butée dans une direction longitudinale arrière pour le dispositif de manoeuvre.On the figure 4 are furthermore represented adjustable means 16, 18, 19 of abutment and stop of the trigger operating device, these means comprising a stop rod 16, an adjusting wheel 18 and a thread 19 on the rod allowing, in cooperation with an internal thread made in the half-shells, to advance or retreat more or less the stop rod forming a stop in a rear longitudinal direction for the operating device.

Les divers éléments constituant le dispositif de l'invention sont détaillés sur la figure 5, vue en coupe longitudinale du dispositif, et sur les figures 6 et 7 vues partielles agrandies de cette figure 5.The various elements constituting the device of the invention are detailed on the figure 5 , longitudinal sectional view of the device, and on the Figures 6 and 7 partial enlarged views of this figure 5 .

En se reportant plus particulièrement à la figure 6, on distingue le canal 5, réalisé dans le corps 11 porte embout 28 de buse 6, et en communication d'une part avec la valve 4 de sortie du récipient et d'autre part avec la buse 6 de pulvérisation de la peinture.With particular reference to the figure 6 , there is the channel 5, made in the body 11 nozzle holder 28 of the nozzle 6, and in communication with the outlet valve 4 of the container and on the other hand with the spray nozzle 6 of the paint.

Lors de la pulvérisation, la peinture sous pression dans le réservoir 5 sort par la valve 4, traverse un conduit 12 du dispositif actionneur de valve, traverse le canal 3 passant au travers du corps de diffuseur 11 et au travers de l'embout 28 et est pulvérisée par la buse 6.During spraying, the paint under pressure in the tank 5 exits through the valve 4, passes through a conduit 12 of the valve actuator device, passes through the channel 3 passing through the diffuser body 11 and through the nozzle 28 and is sprayed through the nozzle 6.

Le canal est réalisé d'une part dans le corps de diffuseur 11 et d'autre part dans l'embout 28 qui peut être un embout interchangeable pourvu de formes de buses 6 variées. Le corps de diffuseur 11 est aussi appelé corps porte embout, l'embout 28, retenu par le capot 29, se loge en partie dans l'extrémité avant du corps 11 pour continuer le canal 3.The channel is formed on the one hand in the diffuser body 11 and on the other hand in the nozzle 28 which may be an interchangeable nozzle provided with various nozzle shapes 6. The diffuser body 11 is also called the end-cap body, the end-piece 28, retained by the cap 29, is partly lodged in the front end of the body 11 to continue the channel 3.

Le dispositif selon l'invention comporte des moyens d'ouverture/fermeture du canal commandés par le dispositif de manoeuvre à détente 8, 9.The device according to the invention comprises means for opening / closing the channel controlled by the triggering device 8, 9.

Les moyens d'ouverture/fermeture du canal comportent l'aiguille 7, qui entre dans le canal par l'extrémité arrière ouverte du corps porte embout 11 et est déplaçable axialement dans le canal 3 entre une position d'obturation du canal pour laquelle une section de l'aiguille obture un passage du canal entre la valve 4 et la buse 6, au niveau de l'intersection du conduit 12 réalisé dans un dispositif actionneur 10 de la valve 4, et une position d'ouverture du canal, pour laquelle l'aiguille 7 libère le passage dans le canal 3 entre la valve 4 et la buse 6.The opening / closing means of the channel comprise the needle 7, which enters the channel through the open rear end of the tip holder body 11 and is axially displaceable in the channel 3 between a closed position of the channel for which a section of the needle closes a passage of the channel between the valve 4 and the nozzle 6, at the intersection of the duct 12 made in an actuator device 10 of the valve 4, and an open position of the channel, for which the needle 7 releases the passage in the channel 3 between the valve 4 and the nozzle 6.

Le corps 11 porte embout 28 de buse 6 est pourvu d'un logement de réception d'une extrémité distale du dispositif actionneur 10 de la valve, dispositif pourvu du conduit 12 de mise en communication de la valve 4 avec le canal 3.The body 11 nozzle holder 28 of nozzle 6 is provided with a receiving housing of a distal end of the actuator device 10 of the valve, device provided with the conduit 12 of communication of the valve 4 with the channel 3.

Le dispositif actionneur 10 est réalisé sous forme d'un tube perpendiculaire à la direction du canal et comporte une collerette 14 d'appui étanche sur l'extrémité de la valve 4.The actuator device 10 is made in the form of a tube perpendicular to the direction of the channel and has a flange 14 sealing against the end of the valve 4.

Le circuit de diffusion de la peinture est donc un circuit passant par le conduit 12, débouchant dans le canal 3 par une lumière 13 réalisée dans le corps 11 porte embout et se terminant à l'extrémité avant de l'embout par la sortie de buse 6.The diffusion circuit of the paint is thus a circuit passing through the conduit 12, opening into the channel 3 by a hole 13 made in the body 11 end cap and ending at the front end of the endpiece by the nozzle outlet 6.

Ce circuit de diffusion est un circuit étanche en dehors de la sortie de buse 6.This diffusion circuit is a sealed circuit outside the nozzle outlet 6.

Le conduit 12 intersecte le canal 3 au niveau de la lumière de communication 13 qui constitue le passage obturé ou laissé libre par l'aiguille lorsqu'elle est manoeuvrée par le dispositif de manoeuvre.The conduit 12 intersects the channel 3 at the level of the communication light 13 which constitutes the passage closed or left free by the needle when it is operated by the operating device.

L'aiguille obture le passage lorsqu'elle est avancée dans le canal 3 et laisse le passage libre lorsqu'elle est reculée dans le canal et dégage la lumière 13.The needle closes the passage when it is advanced in the channel 3 and leaves the free passage when it is moved back into the channel and releases the light 13.

Cette obturation du passage constitué par la lumière est réalisée selon l'exemple par un décrochement au niveau de la section centrale de l'aiguille 7.This obturation of the passage constituted by the light is carried out according to the example by a recess at the level of the central section of the needle 7.

Les position de fermeture et d'ouverture du canal sont représentées respectivement aux figures 8A et 8B montrant un détail des moyens d'ouverture et de fermeture du canal et en particulier la position du décrochement 31 de l'aiguille 7 relativement à la lumière 13 dans les phases d'ouverture et de fermeture du canal.The closing and opening positions of the channel are represented respectively at Figures 8A and 8B showing a detail of the opening and closing means of the channel and in particular the position of the recess 31 of the needle 7 relative to the light 13 in the opening and closing phases of the channel.

L'utilisation d'un décrochement 31 entre deux diamètres de l'aiguille permet une transition franche entre l'état de fermeture et l'état d'ouverture du canal mais d'autre moyens tels qu'une pente conique pourraient être considérés sans sortir du cadre de l'invention.The use of a recess 31 between two diameters of the needle allows a clear transition between the closed state and the open state of the channel but other means such as a conical slope could be considered without departing from the scope of the invention.

Selon un aspect avantageux de l'invention, le dispositif actionneur 10 de valve et les moyens de fixation 2 sont agencés pour maintenir la valve en position ouverte dès la fixation du pistolet sur le récipient.According to an advantageous aspect of the invention, the valve actuator device 10 and the fixing means 2 are arranged to hold the valve in the open position as soon as the gun is attached to the container.

Ainsi, seul le dispositif à détente agit sur la pulvérisation de peinture ou l'arrêt de cette pulvérisation la valve 4 étant maintenue ouverte.Thus, only the expansion device acts on the spray paint or the stop of this spray valve 4 being kept open.

En outre, l'utilisation du pistolet est simplifiée puisque le récipient devient une simple cartouche de chargement du pistolet, la valve, maintenue en position ouverte par le dispositif actionneur, n'agissant pas sur le débit de peinture qui est réglé par l'aiguille.In addition, the use of the gun is simplified since the container becomes a simple gun loading cartridge, the valve, held in the open position by the actuator device, does not act on the flow of paint that is set by the needle .

L'utilisation d'une aiguille qui traverse le canal 3 jusqu'à la buse 6, et d'un circuit de diffusion étanche lorsque l'aiguille ferme le passage, diminue les risques de colmatage du dispositif par de la peinture séchée car, en position avancée de fermeture du canal, l'aiguille réduit la quantité de peinture ou de résidus de peinture dans le canal et, lorsque l'aiguille est manoeuvrée, la combinaison du mouvement de l'aiguille et de la pression dans le récipient chasse les résidus de peinture se trouvant dans le canal 3.The use of a needle which passes through the channel 3 to the nozzle 6, and a diffusion circuit sealed when the needle closes the passage, reduces the risk of clogging of the device with dried paint because, in advanced position of closing the channel, the needle reduces the amount of paint or paint residue in the channel and, when the needle is operated, the combination of the movement of the needle and the pressure in the container flushes the residue of paint in channel 3.

Cette disposition est plus fiable qu'un dispositif qui utiliserait la valve comme moyen d'ouverture/fermeture car dans ce dernier cas, le canal 3 resterait rempli de peinture après arrêt de la pulvérisation et risquerait de se boucher.This arrangement is more reliable than a device that would use the valve as a means of opening / closing because in the latter case, the channel 3 would remain filled with paint after stopping the spray and could clog.

Cette façon de réaliser le dispositif en remplaçant le fonctionnement de la valve 4 par un dispositif de manoeuvre intégré dans le corps du pistolet est permis du fait de la réalisation du circuit de diffusion en circuit étanche.This embodiment of the device by replacing the operation of the valve 4 by a maneuvering device integrated in the gun body is permitted due to the realization of the diffusion circuit sealed circuit.

En se référant à la figure 5, le dispositif de manoeuvre à détente comporte une détente 9, solidaire d'un élément de liaison 8 entre la détente 9 et l'aiguille 7, l'élément de liaison étant lui même pourvu d'un support 14 de l'aiguille.Referring to the figure 5 , the triggering operating device comprises a detent 9, integral with a connecting element 8 between the trigger 9 and the needle 7, the connecting element itself being provided with a support 14 of the needle.

Le dispositif de manoeuvre comporte en outre des moyens de rappel 15 de l'aiguille en position de fermeture du canal constitués selon le mode de réalisation représenté par un ressort spiral disposé entre l'arrière de l'élément de liaison et un butée réalisée dans les demi-coques.The maneuvering device further comprises means 15 for returning the needle in the closed position of the channel constituted by the embodiment represented by a spiral spring disposed between the rear of the connecting element and a stop made in the half-shells.

Selon un aspect avantageux, le dispositif comporte des moyens réglables 16, 18, 19 de butée et d'arrêt du dispositif de manoeuvre à détente.According to an advantageous aspect, the device comprises adjustable means 16, 18, 19 of abutment and stop of the trigger operating device.

Ces moyens réglables permettent, en vissant la molette, en premier lieu de pousser l'élément de liaison vers l'avant et donc d'enfoncer l'aiguille 7 dans le canal pour fermer le passage 13 et, en second lieu, d'empêcher la manoeuvre de la détente 9 ce qui constitue une sécurité contre tout déclenchement intempestif du pistolet.These adjustable means allow, by screwing the wheel, first to push the connecting element forward and thus to push the needle 7 in the channel to close the passage 13 and, secondly, to prevent the operation of the trigger 9 which is a safety against inadvertent triggering of the gun.

En outre, en dévissant la molette, ces moyens permettent de régler le jet de peinture délivré par la buse comme il sera vu ci-après.In addition, by unscrewing the wheel, these means allow to adjust the spray paint delivered by the nozzle as will be seen below.

En effet, selon un aspect avantageux de l'invention, l'aiguille 7 comporte une extrémité formant, dans la buse 6, un pointeau 17 de conformation du jet délivré par la buse 6.Indeed, according to an advantageous aspect of the invention, the needle 7 has an end forming, in the nozzle 6, a needle 17 of conformation of the jet delivered by the nozzle 6.

Cette extrémité de l'aiguille 7 est selon l'exemple de forme conique effilée et de profil complémentaire du profil interne du canal au niveau de l'embout 28. Ceci fait que plus l'aiguille est avancée dans le canal, plus le faisceau de peinture va être diffus et plus l'aiguille est reculée dans le canal plus le faisceau de peinture va être épais.This end of the needle 7 is according to the example of tapered conical shape and complementary profile of the internal profile of the channel at the tip 28. This means that the more the needle is advanced in the channel, the more the beam of paint will be diffuse and the needle is back in the channel more the paint beam is going to be thick.

Pour permettre simplement à l'opérateur de doser la densité du faisceau de peinture et de fournir un débit de peinture homogène, les moyens réglables 16, 18, 19, plus particulièrement représentés en figure 7 sont agencés pour permettre un réglage de la course du pointeau dans la buse en sorte de régler le jet délivré par la buse.To allow the operator to simply measure the density of the paint beam and to provide a uniform paint flow, the adjustable means 16, 18, 19, more particularly represented in FIG. figure 7 are arranged to allow adjustment of the stroke of the needle in the nozzle so as to adjust the jet delivered by the nozzle.

Pour obtenir un faisceau homogène, l'opérateur dévisse la molette 18 jusqu'à obtenir une position de butée de la tige 16 correspondant, lors de l'appui sur la détente, au jet qu'il désire.To obtain a homogeneous beam, the operator unscrews the knob 18 to obtain an abutment position of the rod 16 corresponding, when pressing the trigger, the jet it desires.

Ensuite, il lui suffira d'appuyer sur la détente à fond pour atteindre cette position de butée et toujours avoir un faisceau de peinture identique.Then it will be sufficient to press the trigger fully to reach this stop position and always have an identical paint beam.

La figure 6 détaille les moyens de fixation du pistolet sur le récipient.The figure 6 details the means for fixing the gun on the container.

Ce moyens comportent une coupelle 2 pourvue d'une jupe munie d'une collerette 20 d'encliquetage sur une lèvre 21 de sertissage d'un dôme 22 et d'un porte-valve 34 du récipient. De la sorte, le changement du récipient est très simple puisqu'il suffit de tirer un récipient vide vers le bas pour désencliqueter la collerette 20 de la lèvre 21 et désolidariser ce récipient du pistolet, et, il suffit de pousser le récipient plein vers le haut contre la collerette jusqu'à encliquetage de la collerette 20 avec la lèvre 21 pour équiper le pistolet d'un nouveau récipient.This means comprise a cup 2 provided with a skirt provided with a collar 20 for snapping on a lip 21 for crimping a dome 22 and a valve holder 34 of the container. In this way, the change of the container is very simple since it is sufficient to pull an empty container down to disengage the collar 20 of the lip 21 and separate the container from the gun, and simply push the full container to the up against the flange until snap of the flange 20 with the lip 21 to equip the gun with a new container.

Selon l'exemple, la coupelle 2 comporte une surface externe bombée 23 s'insérant dans une ouverture complémentaire 24 du corps du pistolet et comporte une surface interne concave d'appui 33 sur le dôme, cette face interne comportant un rebord 32 d'appui sur la lèvre 21, la coupelle 2 formant un dispositif interface adaptateur entre le pistolet 1 et le récipient 5 ce qui permet par un simple changement de la coupelle d'adapter le pistolet sur des récipients de forme, de diamètre, de hauteur de valve ou de dôme différents.According to the example, the cup 2 has a curved outer surface 23 inserted into a complementary opening 24 of the gun body and has a concave internal bearing surface 33 on the dome, this inner face having a support rim 32 on the lip 21, the cup 2 forming an adapter interface device between the gun 1 and the container 5 which allows by a simple change of the cup to adapt the gun to containers of shape, diameter, valve height or different dome.

Claims (11)

  1. A paint gun device comprising a gun (1), provided with means of fixing the gun to an aerosol receptacle (5), containing a paint under pressure and comprising a channel (3) for atomising the paint, in communication firstly with an outlet valve (4) of the receptacle and secondly with a nozzle (6) for atomising the paint, means of opening/closing the channel controlled by a manoeuvring device (8, 9) and also comprising a device (10) actuating the valve, characterised in that the means of opening/closing the channel comprises a needle (7) that passes through the channel (3) to the nozzle (6), the needle being adapted to close a passage produced by a communication aperture (13) between a duct (12) putting the valve in communication with the channel (3) and the channel and to produce a sealed distribution circuit, and in that the valve actuating device (10) and the fixing means (2) are arranged to keep the valve in the open position as soon as the gun is fixed to the receptacle.
  2. A paint gun device according to claim 1, for which the channel is produced in a dispenser body (11) carrying a connecting piece (28) for the nozzle (6), provided with a housing receiving a distal end of the device (10) actuating the valve (4).
  3. A paint gun device according to claim 2, characterised in that the actuating device (10) comprises a collar (14) for sealed bearing on the end of the valve (4).
  4. A paint gun device according to one of claims 1 to 3, for which the needle (7) is movable axially in the channel (3) between a position of closing off the channel in which a section of the needle closes off a passage in the channel between the valve (4) and the nozzle (6) and a position of opening the channel in which the needle releases the passage in the channel between the valve and the nozzle.
  5. A paint gun device according to claim 4, for which the duct (12) intersects the channel (3) at a communication aperture (13) constituting said passage.
  6. A paint gun device according to one of the preceding claims, for which the manoeuvring device is a trigger device that comprises a trigger (9), secured to a connecting element (8) itself provided with a support (14) for the needle, and comprises means (15) of returning the needle to the closed position of the channel.
  7. A paint gun device according to one of the preceding claims, characterised in that it comprises adjustable abutment and stop means (16, 18, 19) for the trigger-type manoeuvring device.
  8. A paint gun device according to claims 4 and 7, characterised in that the needle (7) comprises an end forming, in the nozzle (6), an injector (17) conforming the jet delivered by the nozzle (6) and in that the adjustable means (16, 18, 19) is arranged to allow adjustment of the travel of the injector in the nozzle in order to adjust the jet delivered by the nozzle.
  9. A paint gun device according to one of the preceding claims, for which the means of fixing the gun to the receptacle comprises a cup (2) provided with a skirt fitted with a collar (20) snapping onto a lip (21) crimping a dome (22) and a valve holder (34) of the receptacle.
  10. A paint gun device according to claim 9, for which the cup (2) comprises a curved external surface (23), inserted in a complementary opening (24) in the body of the gun, and a concave internal surface (33) bearing on the dome (22), the cup (2) forming an adapting interface device between the gun (1) and the receptacle (5).
  11. A paint gun device according to one of the preceding claims, for which the end of the needle (7) has a tapered conical shape and a profile complementary to the internal profile of the channel at a connecting piece (28) of the nozzle (6) so as to vary the thickness of the paint jet according to the position of the needle in the channel.
EP06300580A 2006-06-12 2006-06-12 Spray gun for painting using aerosol cartridges Not-in-force EP1867396B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT06300580T ATE449016T1 (en) 2006-06-12 2006-06-12 PAINT SPRAY GUN WITH PRESSURE CAN
DE602006010527T DE602006010527D1 (en) 2006-06-12 2006-06-12 Paint spray gun with pressure box
EP06300580A EP1867396B1 (en) 2006-06-12 2006-06-12 Spray gun for painting using aerosol cartridges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06300580A EP1867396B1 (en) 2006-06-12 2006-06-12 Spray gun for painting using aerosol cartridges

Publications (2)

Publication Number Publication Date
EP1867396A1 EP1867396A1 (en) 2007-12-19
EP1867396B1 true EP1867396B1 (en) 2009-11-18

Family

ID=36924188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06300580A Not-in-force EP1867396B1 (en) 2006-06-12 2006-06-12 Spray gun for painting using aerosol cartridges

Country Status (3)

Country Link
EP (1) EP1867396B1 (en)
AT (1) ATE449016T1 (en)
DE (1) DE602006010527D1 (en)

Cited By (2)

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DE102009013376A1 (en) * 2009-03-09 2010-09-16 Adolf Würth GmbH & Co. KG Spray gun, particularly paint spray gun, comprises storage vessel, which is formed pressure resistant, and has discharge medium standing under pressure, where exhaust valve is provided, which is connected with spray gun
US9808816B1 (en) 2016-08-26 2017-11-07 Gemini Holdings, LLC Spray gun system

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CN103391890B (en) * 2011-02-25 2015-04-01 陶氏环球技术有限责任公司 Compressed fluid dispensing device with internal seal
EP2762235A1 (en) * 2013-02-01 2014-08-06 Altachem N.V. Device for dispensing pressurized fluids
US9303416B1 (en) 2014-11-19 2016-04-05 Westpac Materials Spray apparatus
US9962719B2 (en) 2014-11-19 2018-05-08 Westpac Materials Spray apparatus
JP6669873B2 (en) * 2015-12-30 2020-03-18 レボテック カンパニー，リミティド Bioprinter spray head assembly and bioprinter

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GB1348270A (en) * 1971-05-28 1974-03-13 Traynor J S Valves for pressurized dispensing containers
AU475127B2 (en) * 1973-02-14 1974-08-15 Sterigard Corporation Attaching a dispensing valve toa pressurized dispenser
DE8116543U1 (en) * 1981-06-04 1981-10-22 Deutsche Tecalemit Gmbh, 4800 Bielefeld SPRAY OR SPRAY GUN FOR GASEOUS MEDIA AND LIQUIDS, IN PARTICULAR MINERAL OIL PRODUCTS
US4453650A (en) * 1981-11-12 1984-06-12 Falcon Safety Products, Inc. Control valve for an aerosol can

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013376A1 (en) * 2009-03-09 2010-09-16 Adolf Würth GmbH & Co. KG Spray gun, particularly paint spray gun, comprises storage vessel, which is formed pressure resistant, and has discharge medium standing under pressure, where exhaust valve is provided, which is connected with spray gun
US9808816B1 (en) 2016-08-26 2017-11-07 Gemini Holdings, LLC Spray gun system

Also Published As

Publication number Publication date
DE602006010527D1 (en) 2009-12-31
ATE449016T1 (en) 2009-12-15
EP1867396A1 (en) 2007-12-19

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