EP2879811B1 - Device for cleaning a spray gun - Google Patents

Device for cleaning a spray gun Download PDF

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Publication number
EP2879811B1
EP2879811B1 EP13747448.2A EP13747448A EP2879811B1 EP 2879811 B1 EP2879811 B1 EP 2879811B1 EP 13747448 A EP13747448 A EP 13747448A EP 2879811 B1 EP2879811 B1 EP 2879811B1
Authority
EP
European Patent Office
Prior art keywords
gun
fluid
gas
nozzle
receiving
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
EP13747448.2A
Other languages
German (de)
French (fr)
Other versions
EP2879811A1 (en
Inventor
Patrick Saint
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.)
Fillon Technologies SAS
Original Assignee
Fillon Technologies SAS
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Filing date
Publication date
Application filed by Fillon Technologies SAS filed Critical Fillon Technologies SAS
Publication of EP2879811A1 publication Critical patent/EP2879811A1/en
Application granted granted Critical
Publication of EP2879811B1 publication Critical patent/EP2879811B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/006—Cabinets or cupboards specially adapted for cleaning articles by hand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/557—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids the cleaning fluid being a mixture of gas and liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/006—Devices for cleaning paint-applying hand tools after use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/49—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for solvents

Definitions

  • the present invention generally relates to a cleaning device for a spray gun.
  • the invention more particularly relates to a cleaning device for a spray gun having a fluid inlet to be sprayed, said paint inlet, an outlet of said fluid to be sprayed, a pressurized gas inlet and an outlet of said pressurized gas.
  • Said cleaning device comprises a support frame, a fluid supply head carried by said frame and connectable to said gun paint inlet, and a fluid and gas receiving system.
  • the fluid and gas receiving system includes, on the one hand, a fluid receiving nozzle having an inlet-connectable fluid passageway with the spray fluid outlet of the gun, and outputting to the fluid collection means. sprayed fluid, and, secondly, an inlet gas outlet conduit connectable with the gas outlet of said gun.
  • the output of said spray fluid from the gun corresponds to the output of paint when the gun is used to spray paint.
  • the document cleaning device WO2010 / 116070 A2 allows cleaning and then drying a gun without disconnecting the gun from said device.
  • the mobility of up and down of the fluid supply head of the document cleaning device WO2010 / 116070 A2 also allows to position some guns, of different sizes, whose paint entries are located at different distances along the axis of the outlet of the feed head.
  • this cleaning device does not make it possible to simultaneously connect the inlet of the paint orifice of the gun to the outlet of the feed head, and the paint outlet of the gun at the inlet of the nozzle of the system. for receiving pistols whose distances between the paint entry and the paint outlet, taken in projection, along the axis of the paint entry, on the axis of the paint outlet, are different.
  • these guns which are not compatible with the cleaning device known from the state of the art, are pistols that have different lengths of gun relative to a gun reference point corresponding to the projected the entrance of paint, along its axis, on the axis of the paint outlet.
  • the axis of the output, respectively of the entry, of paint of the gun corresponds to the axis perpendicular to the mean plane passing through the outlet of the outlet, respectively of the entry, paint gun.
  • the present invention aims to provide a cleaning device for easily and reliably position in said cleaning device pistols with different barrel lengths.
  • the invention also aims to allow the cleaning in a reliable and easy manner pistols whose outer diameter of the barrel is small.
  • the subject of the invention is a cleaning device as described in the introduction, characterized in that said fluid-receiving nozzle is movably mounted relative to the support frame in a direction substantially parallel to the axis. the inlet of the fluid passage of the fluid receiving nozzle, between a position close to the fluid supply head and a position spaced from said fluid supply head.
  • the mobility of the fluid receiving nozzle makes it possible to position, inside the cleaning device according to the invention, pistols which have different lengths of barrel.
  • the mobility of the nozzle allows it to move along an axis substantially parallel to the axis of the paint outlet of the gun, when that is applied against the inlet of the nozzle of the receiving system, possibly by the An adapter is described in detail below, which allows the receiving system to absorb an extra length of the gun barrel relative to another gun of shorter barrel length.
  • the device it is thus possible to simultaneously connect the painting inlet of the gun to the fluid supply head, and the paint outlet of the gun at the inlet of the nozzle of the receiving system, for pistols having different lengths of barrel, that is to say for pistols whose distances between the entry of paint and the exit of paint, taken in projection, according to the axis of the entry of painting, on the axis of the paint outlet, are different.
  • the fluid and gas receiving system comprises a fixed body relative to the frame in which is formed a housing inside which the fluid receiving nozzle is slidably mounted.
  • the reception system comprises anti-rotation means of the receiving nozzle with respect to the housing within which said receiving nozzle is slidably mounted.
  • said device comprises means for elastic return of the receiving nozzle in a position close to said fluid supply nozzle.
  • the elastic return of the nozzle in the close position makes it possible to maintain the inlet of the nozzle bearing directly or indirectly against the exit of the gun.
  • the reception system comprises, on the one hand, a gas reception chamber in which at least partially extends the receiving nozzle and into which the inlet of the evacuation duct opens out. of gas, and, secondly, a sealing member adapted to delimit with the outer peripheral wall of the receiving nozzle and in cooperation with the barrel of the gun, in the state supported by the barrel of the pistol against the organ sealing, a sealed communication space between the inlet of the gas exhaust duct and the gas outlet of the gun.
  • said sealing member is able to slide inside the gas reception chamber in a direction substantially parallel to the direction of sliding of the receiving nozzle between a close position of the duct. gas discharge and a position spaced from said gas exhaust duct.
  • said sealing member is biased by biasing means against an internal peripheral stop provided at the end of the chamber situated on the side of the inlet of the fluid passage of the receiving nozzle.
  • said sealing member is able to swivel inside said gas reception chamber.
  • said tubular-type sealing member has a peripheral wall, which extends through the internal peripheral stop of the gas-receiving chamber, said peripheral wall of the body of the sealing defining an aperture adapted to be connected to the gun gas outlet to allow tight communication between the gun gas outlet and the volume defined between the outer peripheral wall of the gas receiving chamber and the receiving nozzle of the gun; fluid, in the applied state of the gun against the sealing member.
  • said peripheral wall of the sealing member is extended, on the inside of the chamber, by a shoulder adapted to abut against said internal peripheral stop provided at the end of the chamber.
  • said device comprises a reportable adapter on the end of the sealing member.
  • Said adapter comprises a wall in which is formed a first through passage, preferably central, able to ensure communication between the fluid outlet of the gun and the inlet of the fluid passage of the receiving nozzle, in the applied state of the pistol against the adapter.
  • a second through passage is also provided in said wall and is adapted to ensure communication between the gas outlet of the gun and the volume defined between the peripheral wall of the chamber and the receiving nozzle, in the applied state of the pistol against the 'adapter.
  • Said wall of the adapter has, in the attached state of the adapter on the sealing member, a concave surface, for example conical, concavity oriented on the opposite side to the receiving nozzle.
  • Said wall of the adapter reduces the opening of said sealing member so that, in the applied state of the pistol against the adapter, on the one hand, the exit spray gun fluid communicates tightly with the inlet of the fluid receiving nozzle and, on the other hand, the gun gas outlet communicates tightly with the gas discharge conduit.
  • This adapter makes it possible to obtain a good seal of the gas reception chamber which ensures the communication between the fluid outlet of the gun and the gas evacuation duct.
  • the gas which is expelled by the fluid outlet of the gun and which passes through the corresponding openings of the adapter is discharged through the gas evacuation duct of the receiving system and not between the sealed sealing member. partially in said gas receiving chamber, and the outer casing of the gun barrel, also called hat, as would be the case in the absence of such an adapter.
  • the cleaning device 1, object of the invention comprises a support frame 2 delimiting a cleaning volume, such as an enclosure, adapted to receive at least partially a spray gun 26 to be cleaned.
  • the spray gun 26 comprises in particular an inlet 27 for spraying fluid, said entry 27 of paint, whose axis is noted A27, and a fluid outlet 29, called paint outlet, whose axis is noted A29.
  • An inner conduit connects the paint inlet 27 to the paint outlet 29 of the gun 26.
  • Such a gun further comprises a gas inlet 31 connectable to a gas supply source, such as compressed air.
  • a gas supply source such as compressed air.
  • This inlet 31 of air allows, in particular, to help the paint to flow from the paint inlet 27 to the fluid outlet 29 and to be ejected from said gun during actuation of the gun trigger.
  • This air inlet 31 also serves to supply a gas outlet 30 of the gun for adjusting the shape of the fluid flow.
  • the gas outlet of the gun is formed of a plurality of outlet orifices, preferably radial and so-called pressurized gas outlet, which serve to regulate the shape of the flow of paint coming from the axial outlet.
  • the gas outlet 30 is formed with outlet orifices disposed around the axial outlet 29 of the gun 26.
  • a paint bucket (not shown) is connected to the entrance 27 of painting. The paint then exits through said axial outlet 29.
  • the frame 2 support carries a feed head 3 fluid having a supply nozzle 5 to be connected to the paint inlet 27 of the spray gun 26 to be cleaned.
  • the supply nozzle 5 is coupled to the frame 2 of the cleaning device 1 by a nozzle holder 50.
  • the nozzle holder 50 has the shape of a tubular body of vertical axis equipped, at its lower end, with the nozzle 5 and open at its upper end to form an opening for introducing a source of cleaning fluid, such as an aerosol container, into said nozzle holder 50.
  • the nozzle holder 50 is movable relative to the frame 2 in a rising and falling movement.
  • the nozzle holder 50 is movable relative to the frame 2 in a rising and falling movement.
  • the guns may differ in the dimensions of the paint entry, the size of the outlet, the distance, and the relative orientation between the paint entry and the gun outlet.
  • the cleaning device comprises a fluid and gas receiving system 14 intended to be connected to the outlets 29 and 30 of the gun 26.
  • the receiving system 14 comprises, on the one hand, a receiving nozzle 15 having an inlet-connectable fluid passage 150 with the outlet 29 of the fluid to be sprayed. gun, and connected at the output 152 to means 16 for collecting the sprayed fluid, and, secondly, a conduit 47 for discharging the gas connectable input with the gas outlet 30 of said gun 26 via a recovery chamber 185 detailed below.
  • Said gas outlet duct 43 opens at an outlet in a zone, called the gas evacuation zone, distinct from the means 16 for collecting the flow of sprayed fluid.
  • the means 16 for collecting the stream of sprayed fluid comprise a reservoir connected via a line 4 to the outlet 152 of the fluid reception nozzle 15 of the receiving system 14.
  • the spray gun 26 is connected to the cleaning device 1. More specifically, the paint bucket is removed and the paint inlet 27 is connected to the feed nozzle 5 of the head 3. 'food.
  • the paint outlet 29 and the gas outlet 30 are applied against the receiving system 14 to be connected respectively to the inlet 151 of the fluid receiving nozzle and to the inlet of the gas discharge duct, by means of FIG. intermediate of a gas reception chamber 185 as detailed below.
  • the feed head 3 can be controlled to circulate cleaner.
  • An embodiment of the feed head 3 and the frame 2 is described in detail in the patent application. WO2010050603 .
  • the feed head 3 comprises a feed nozzle 5 provided with at least two independent fluid supply inlets. Said inlets each have a distinct outlet in the conduit of said feed nozzle. The said inlets are connectable to one source of cleaning fluid and the other to a source of compressed air.
  • the cleaning fluid feeds the inlet nozzle 5 via an inlet and passes successively through the paint inlet 27, the inner duct, and the axial outlet 29 of the paint gun.
  • compressed air feeds the feed nozzle, through the other inlet of the feed nozzle, and passes successively through the paint inlet 27, the inner conduit, and the outlet. 29 axis of the gun. This drying makes it possible to evacuate the cleaning product remaining in the internal conduit of the gun between inlet 27 and axial outlet 29 of said gun.
  • the feed head 3 is disposed at or near the top of the frame and therefore extends substantially above the gun in the infeed state of the gun into the cleaning volume.
  • Said receiving nozzle 15 is mounted movably relative to the support frame 2, in a direction substantially parallel to the axis A15 of the inlet 151 of the fluid passage 150 of the receiving nozzle 15, between a position close to the head 3 fluid supply and a position spaced from said head 3 of fluid supply.
  • the distance, projected on said inlet axis 15 of the receiving nozzle 15, between the inlet 151 of the receiving nozzle 15 in close position and the outlet of the feed nozzle 5 is smaller than the projected distance on said axis A15 between the inlet 151 of the receiving nozzle 15 in the spaced-apart position and the outlet of the feed nozzle 5 in said position spaced from said receiving nozzle 15.
  • the axis A15 of the inlet 151 of the fluid passage 150 of the receiving nozzle 15 corresponds to an axis orthogonal to the mean plane passing through the mouth of the inlet 151 of the fluid passage 150. In the example illustrated in the figures, said axis coincides with the axis of the nozzle 15.
  • the mobility of the spray fluid receiving nozzle 15 thus makes it possible to simultaneously connect the paint inlet 27 of the gun 26 to the fluid supply head 5 and the paint outlet 29 of the gun to the inlet 151 of the nozzle of the reception system 14, for pistols having different gun lengths, that is to say for pistols whose distances between the entry 27 of paint and the exit 29 of paint, taken in projection, along the axis A27 of the entrance 27, on the axis A29 of the exit 29 of paint, are different.
  • the receiving system 14 comprises a body 40 fixed relative to the frame 2 in which is formed a housing 405 inside which the receiving nozzle 15 is slidably mounted.
  • a duct 45 is formed in the body 40 of the receiving system 14.
  • One end of the conduit 45 opens into the housing 405 inside which the receiving nozzle 15 is slidably mounted and the other end of said conduit is connected via the pipe 4 to the fluid collection tank 16.
  • said receiving nozzle 15 comprises a cylindrical body 158 to which is coupled a nozzle head 159 at the free end of which opens said inlet 151 150 passage of fluid.
  • Said nozzle body 158 is mounted in said housing 405.
  • Said receiving nozzle 15 is, in the state connected with said axial outlet 29, able to prevent any action of the gas coming from the gas outlets 30 on the flow of fluid coming from the axial outlet 29.
  • the flow of fluid leaving the axial outlet 29 of the gun 26 is isolated from the flow of gas leaving the gas outlet 30 of the gun 26.
  • the receiving system 14 comprises anti-rotation means 156, 157 of the receiving nozzle 15 with respect to the housing 405 inside which said nozzle receiving 15 is slidably mounted.
  • Said anti-rotation means 156, 157 comprise a groove 156 formed in the cylindrical body of the receiving nozzle 15 in a direction substantially parallel to the direction of sliding of the receiving nozzle 15 and a pin 157 integral with the housing body which extends in said groove (perpendicularly) to the axis of the groove.
  • Said device 1 comprises elastic return means 155 of the receiving nozzle 15 in a position close to said fluid supply nozzle 3.
  • Said elastic return means 155 of the receiving nozzle 15 comprise an elastic member, such as a spring, one end of which is integral with the housing 405 of the receiving system 14 and the opposite end of which is integral with the receiving nozzle 15 .
  • the receiving system 14 also comprises a gas reception chamber 185 in which at least partially extends the receiving nozzle 15 and into which the inlet of the gas evacuation conduit 47 opens.
  • Said receiving chamber 185 houses a sealing member 19 able to delimit with the outer peripheral wall of the receiving nozzle 15 and in cooperation with the outer peripheral wall of the gun barrel 260, in the state of the gun barrel against the sealing member 19, a sealed annular space for communication between the inlet of the gas discharge pipe 47 and the gas outlet 30 of the gun 26.
  • the sealing member 19 defines a suitable opening to be connected to the gas outlet 30 of the gun to allow tight communication between the gas outlet 30 of the gun and the volume defined between the peripheral wall of the chamber 185 and the receiving nozzle 15.
  • Said sealing member 19 is loaded by a spring 192 and forms a swivel ring as detailed below.
  • the gas evacuation pipe 47 is connectable at the inlet with the outlet 30 of said gun, through said sealing member 19 detailed below.
  • the exhaust duct 47 opens at an outlet in an area called the gas evacuation zone distinct from the means 16 for collecting the stream of sprayed fluid in order to evacuate the gases from the gun in an evacuation zone.
  • the outer peripheral wall of the gas reception chamber 185 is formed by a ring 18 surrounding said nozzle 15, in particular the frustoconical part of said nozzle 15.
  • the inlet of the gas discharge conduit 47 opens into the space defined between the wall of the ring 18 and the receiving nozzle 15.
  • the sealing member 19 comprises a peripheral wall 190 of diameter slightly smaller than the internal diameter of the ring 18. Said peripheral wall 190 of the sealing member 19 is extended, on the inside of the chamber 185, by a shoulder 191 adapted to abut against an internal radial stop 181 formed at the end of the chamber 185.
  • the sealing member 19 can slide along the ring 18 between a compressed position of the spring 192 and a return position of the sealing member 19 against said inner radial stop 181 formed at the free end of the ring 18, wherein said sealing member 19 is recalled.
  • the peripheral wall 190 of said sealing member 19 has a convex outer peripheral surface for swiveling around the nozzle 15 for receiving fluid, and thus making it possible to ensure a good seal of the communication passage between the gas outlet 30 of the gun and the exhaust pipe 47 of gas and the communication passage between the outlet 29 of the gun and the inlet 151 of the receiving nozzle when the gun 26 needs to be slightly inclined with respect to the axis of the nozzle for connecting the paint inlet 27 to the feed nozzle 5 and the axial outlet 29 to the inlet 151 of the receiving nozzle.
  • the peripheral wall 190 of the sealing member extends, in the return state of the sealing member 19 against the internal radial abutment 181, projecting from said internal radial abutment 181.
  • the protrusion of the sealing member allows, depending on the type of gun, to ensure that the gun 260 of the gun 26 bears first on the sealing member 19 before the paint outlet 29 of the gun is in support on the nozzle 15, which provides a good seal of the space defined between the sealing member 19, the ring 18 and the nozzle 15, which communicates with the connecting pipe 47.
  • the protruding from the sealing member 19 allows as illustrated more particularly to the figure 5 to set up and maintain an adapter 8 for mini-gun on said peripheral wall 190 of the sealing member 19.
  • the figure 3 illustrates the case of the positioning of a given gun length gun in the cleaning device according to the invention.
  • the paint inlet 27 is connected to the outlet of the feed head 3 and the outlet 29 of the gun is aligned with the inlet 151 of the receiving nozzle 15 by bearing contact of the gun barrel against the nozzle 15 receiving which can move back to a given position due to its sliding mobility to allow the gun to be properly positioned in the cleaning device.
  • the figure 4 illustrates the case of the positioning of another gun of longer barrel length than that of the gun of the figure 3 .
  • the paint inlet 27 is connected to the outlet of the feed head 3 and the outlet 29 of the gun is aligned with the inlet 151 of the receiving nozzle 15.
  • the extra length of the gun barrel, compared with the length of the gun barrel of the figure 3 is absorbed by the cleaning device by virtue of the sliding mobility of the receiving nozzle 15. So, in the example shown in the figure 4 , the receiving nozzle 15 is pushed back by the barrel of the gun 26 in a position different from that of the figure 3 .
  • the return spring of the nozzle 15 is more compressed than it is in the example shown in FIG. figure 3 for which the barrel of the gun is shorter.
  • the swiveling sealing member 19 makes it possible, in combination with the sliding mobility of the receiving nozzle 15, to introduce the outlet 29 of the gun into the ring 18, with if necessary a given inclination, in order then to be able to align said outlet 29 with inlet 151 of the receiving nozzle 15 while connecting the paint inlet 27 to the outlet of the feed head 3.
  • the device according to the invention by virtue of the sliding mobility of the receiving nozzle, makes it possible to align the inlet of the reception nozzle 15 with the outlet 29 of the gun 26, as well as the paint inlet 27 of the gun with the output of the head 3 feeding.
  • the outlet 152 of the fluid passage 150 of the receiving nozzle remains, irrespective of the sliding position of the receiving nozzle 15, in communication with the collecting means 16 to allow the collection of the dirty product leaving the pistol 26.
  • the adapter 8 for mini gun is detailed below.
  • said device comprises an adapter 8 reportable on the end of the sealing member 19.
  • Said adapter 8 has a first through passage 81, preferably central, capable of ensuring communication between the fluid outlet 29 of the gun and the inlet 151 of the fluid passage 150 of the receiving nozzle 15, in the applied state of the gun 26 against the adapter.
  • Said adapter 8 also has a second through passage 82 capable of ensuring communication between the gas outlet 30 of the gun and the volume delimited between the peripheral wall of the chamber 185 and the receiving nozzle 15, in the applied state of the pistol against the adapter 8.
  • Said adapter 8 also has a wall 80, preferably of generally conical shape and concavity oriented on the outer side of the sealing member, which, in the attached state of the adapter 8 on the sealing member 19 , reduces the opening of said sealing member 19, so as to allow, on the one hand, the outlet 29 of spray fluid gun 26 applied against the adapter 8 to communicate in a sealed manner with the inlet of the receiving nozzle 15 and, on the other hand, at the gas outlet 30 of the gun 26 applied against the adapter 8 to communicate in leaktight manner with the exhaust duct 47.
  • the wall of the barrel, or the barrel cap, which extends around the outlet 29 of the fluid to be sprayed and the external gas outlet 30 of said gun 26 can bear against the sealing member 19. through said adapter 8 to ensure the sealed communication between the gas outlet 30 of the gun and the volume defined between the peripheral wall of the chamber 185 and the receiving nozzle 15, in the applied state of the gun against the adapter 8 .
  • the outer peripheral edge of the opening reduction wall 80 is provided with a bearing return against the outer face of the peripheral wall 190 of the sealing member 19. Said return and the reduction wall of said adapter delimit between them an insertion groove of the free edge of the peripheral wall 190 of the sealing member19.
  • the portion of the barrel of the pistol that extends around the outlet 30 of the pistol is able to bear, directly or indirectly, against the peripheral wall 190 of said sealing member 19, while the part of the barrel of the pistol 26 which extends between the axial outlet 29 and the outlet 30 of the gun 26, abuts directly or indirectly against the portion of the nozzle 15 which surrounds the inlet 151 of said nozzle.
  • the sealing member 19 surrounds the gun barrel with sealing contact and prevents the air issuing from the end of the barrel of the gun. gun by the gas outlets 30 to escape out of the volume defined by the ring 18, the nozzle 15 and said sealing member 19, and with which communicates the inlet of the exhaust pipe 47 gas.
  • the end of the receiving nozzle 15 is preferably made of an elastically deformable material. It can be seen that the receiving nozzle has a cylindro-conical shape. This makes it possible to connect the receiving nozzle 15 to guns having paint outlets of different diameters.
  • said gas discharge duct 47 has an inlet which opens into the passage formed by the space left free between the ring 18 and the receiving nozzle 15, in particular the frustoconical part of said nozzle 15, and an opposite end or outlet which opens into the gas evacuation zone.
  • the gas evacuation zone is formed by the ambient air surrounding the cleaning device so that said gas evacuation duct opens into the open air.
  • the frame 2 support comprises, in its so-called rear zone, opposite to its front opening, at least one, preferably a plurality of openings corresponding to the outlet to the open air or the exhaust ducts.
  • said receiving member 14 comprises a plurality of conduits 47 for evacuation of gases.
  • Said conduits are arranged equidistant from the axis of the receiving nozzle 15.
  • the entries of the gas discharge conduits 47 in the space between the ring 18 and the receiving nozzle 15 are arranged on a center circle located on the central axis of the receiving nozzle. This increases the possibilities of evacuation of gases in the atmosphere.
  • the cleaning product leaves the feed head 3 and passes successively through the feed nozzle 5, the paint inlet 27, the internal pipe, the outlet 29 of the gun, the element 14 reception and then arrives in the collection means 16.
  • the cleaning product therefore circulates in a closed circuit from the feed head 3 to the collection means 16.
  • the inlet head 3 can be controlled to pass air under pressure in the closed circuit mentioned above to dry the spray gun and more specifically to evacuate the cleaning product remaining in the internal conduit.

Description

La présente invention concerne de manière générale un dispositif de nettoyage pour pistolet de pulvérisation.The present invention generally relates to a cleaning device for a spray gun.

L'invention concerne plus particulièrement un dispositif de nettoyage pour pistolet de pulvérisation présentant une entrée de fluide à pulvériser, dite entrée de peinture, une sortie dudit fluide à pulvériser, une entrée de gaz sous pression et une sortie dudit gaz sous pression. Ledit dispositif de nettoyage comprend un bâti support, une tête d'alimentation en fluide portée par ledit bâti et raccordable à ladite entrée de peinture du pistolet, et un système de réception de fluide et de gaz. Ledit système de réception de fluide et de gaz comprend, d'une part, une buse de réception de fluide présentant un passage de fluide raccordable en entrée avec la sortie de fluide à pulvériser du pistolet, et raccordé en sortie à des moyens de collecte du fluide pulvérisé, et, d'autre part, un conduit d'évacuation de gaz raccordable en entrée avec la sortie de gaz dudit pistolet.The invention more particularly relates to a cleaning device for a spray gun having a fluid inlet to be sprayed, said paint inlet, an outlet of said fluid to be sprayed, a pressurized gas inlet and an outlet of said pressurized gas. Said cleaning device comprises a support frame, a fluid supply head carried by said frame and connectable to said gun paint inlet, and a fluid and gas receiving system. The fluid and gas receiving system includes, on the one hand, a fluid receiving nozzle having an inlet-connectable fluid passageway with the spray fluid outlet of the gun, and outputting to the fluid collection means. sprayed fluid, and, secondly, an inlet gas outlet conduit connectable with the gas outlet of said gun.

La sortie dudit fluide à pulvériser du pistolet correspond à la sortie de peinture lorsque le pistolet est utilisé pour pulvériser de la peinture.The output of said spray fluid from the gun corresponds to the output of paint when the gun is used to spray paint.

On connaît de l'état de la technique, et notamment du document WO2010/116070 A2 un dispositif de nettoyage selon le préambule de la revendication 1. Dans ce dispositif de nettoyage, la tête d'alimentation et le système de réception sont positionnés l'un par rapport à l'autre de manière à pouvoir être reliés en même temps respectivement à l'entrée de peinture du pistolet de pulvérisation et à la sortie de peinture du pistolet de pulvérisation.It is known from the state of the art, and in particular from the document WO2010 / 116070 A2 a cleaning device according to the preamble of claim 1. In this cleaning device, the feed head and the receiving system are positioned relative to one another so that they can be connected at the same time respectively to the spray gun paint inlet and the spray gun paint outlet.

Le dispositif de nettoyage du document WO2010/116070 A2 permet de procéder au nettoyage puis au séchage d'un pistolet sans déconnexion du pistolet dudit dispositif.The document cleaning device WO2010 / 116070 A2 allows cleaning and then drying a gun without disconnecting the gun from said device.

La mobilité de monte et baisse de la tête d'alimentation en fluide du dispositif de nettoyage du document WO2010/116070 A2 permet aussi de positionner certains pistolets, de différentes dimensions, dont les entrées de peinture sont situées à différentes distances le long de l'axe de la sortie de la tête d'alimentation.The mobility of up and down of the fluid supply head of the document cleaning device WO2010 / 116070 A2 also allows to position some guns, of different sizes, whose paint entries are located at different distances along the axis of the outlet of the feed head.

Cependant, on constate que d'autres types de pistolets ne peuvent pas être positionnés de manière fiable dans ce dispositif de nettoyage connu de l'état de la technique. En particulier, ce dispositif de nettoyage ne permet pas de relier simultanément l'entrée de l'orifice de peinture du pistolet à la sortie de la tête d'alimentation, et la sortie de peinture du pistolet à l'entrée de la buse du système de réception pour des pistolets dont les distances entre l'entrée de peinture et la sortie de peinture, prises en projection, suivant l'axe de l'entrée de peinture, sur l'axe de la sortie de peinture, sont différentes. De manière simplifiée, on pourra considérer que ces pistolets qui ne sont pas compatibles avec le dispositif de nettoyage connu de l'état de la technique, sont des pistolets qui présentent différentes longueurs de canon par rapport à un point de référence du pistolet correspondant au projeté de l'entrée de peinture, suivant son axe, sur l'axe de la sortie de peinture.However, it is found that other types of guns can not be reliably positioned in this cleaning device known in the state of the art. In particular, this cleaning device does not make it possible to simultaneously connect the inlet of the paint orifice of the gun to the outlet of the feed head, and the paint outlet of the gun at the inlet of the nozzle of the system. for receiving pistols whose distances between the paint entry and the paint outlet, taken in projection, along the axis of the paint entry, on the axis of the paint outlet, are different. In a simplified manner, it may be considered that these guns which are not compatible with the cleaning device known from the state of the art, are pistols that have different lengths of gun relative to a gun reference point corresponding to the projected the entrance of paint, along its axis, on the axis of the paint outlet.

L'axe de la sortie, respectivement de l'entrée, de peinture du pistolet correspond à l'axe perpendiculaire au plan moyen passant par le débouché de la sortie, respectivement de l'entrée, de peinture du pistolet.The axis of the output, respectively of the entry, of paint of the gun corresponds to the axis perpendicular to the mean plane passing through the outlet of the outlet, respectively of the entry, paint gun.

La présente invention a pour but de proposer un dispositif de nettoyage permettant de positionner aisément et de manière fiable dans ledit dispositif de nettoyage des pistolets présentant différentes longueurs de canon.The present invention aims to provide a cleaning device for easily and reliably position in said cleaning device pistols with different barrel lengths.

L'invention a également pour but de permettre le nettoyage de manière fiable et aisée de pistolets dont le diamètre extérieur du canon est de petite dimension.The invention also aims to allow the cleaning in a reliable and easy manner pistols whose outer diameter of the barrel is small.

A cet effet, l'invention a pour objet un dispositif de nettoyage tel que décrit en introduction, caractérisé en ce que ladite buse de réception de fluide est montée mobile à déplacement par rapport au bâti support, suivant une direction sensiblement parallèle à l'axe de l'entrée du passage de fluide de la buse de réception de fluide, entre une position rapprochée de la tête d'alimentation en fluide et une position écartée de ladite tête d'alimentation en fluide.For this purpose, the subject of the invention is a cleaning device as described in the introduction, characterized in that said fluid-receiving nozzle is movably mounted relative to the support frame in a direction substantially parallel to the axis. the inlet of the fluid passage of the fluid receiving nozzle, between a position close to the fluid supply head and a position spaced from said fluid supply head.

La mobilité de la buse de réception de fluide permet de positionner, à l'intérieur du dispositif de nettoyage selon l'invention, des pistolets qui présentent différentes longueurs de canon. En particulier, la mobilité de la buse lui permet de se déplacer suivant un axe sensiblement parallèle à l'axe de la sortie de peinture du pistolet, lorsque celui est appliqué contre l'entrée de la buse du système de réception, éventuellement par l'intermédiaire d'un adaptateur comme détaillé ci-après, ce qui permet au système de réception d'absorber une surlongueur du canon du pistolet par rapport à un autre pistolet de longueur de canon plus courte.The mobility of the fluid receiving nozzle makes it possible to position, inside the cleaning device according to the invention, pistols which have different lengths of barrel. In particular, the mobility of the nozzle allows it to move along an axis substantially parallel to the axis of the paint outlet of the gun, when that is applied against the inlet of the nozzle of the receiving system, possibly by the An adapter is described in detail below, which allows the receiving system to absorb an extra length of the gun barrel relative to another gun of shorter barrel length.

Grâce au dispositif selon l'invention, il est ainsi possible de connecter simultanément l'entrée de peinture du pistolet à la tête d'alimentation en fluide, et la sortie de peinture du pistolet à l'entrée de la buse du système de réception, pour des pistolets présentant différentes longueurs de canon, c'est-à-dire pour des pistolets dont les distances entre l'entrée de peinture et la sortie de peinture, prises en projection, suivant l'axe de l'entrée de peinture, sur l'axe de la sortie de peinture, sont différentes.Thanks to the device according to the invention, it is thus possible to simultaneously connect the painting inlet of the gun to the fluid supply head, and the paint outlet of the gun at the inlet of the nozzle of the receiving system, for pistols having different lengths of barrel, that is to say for pistols whose distances between the entry of paint and the exit of paint, taken in projection, according to the axis of the entry of painting, on the axis of the paint outlet, are different.

Selon une caractéristique avantageuse de l'invention, le système de réception de fluide et de gaz comprend un corps fixe par rapport au bâti dans lequel est ménagé un logement à l'intérieur duquel la buse de réception de fluide est montée coulissante.According to an advantageous characteristic of the invention, the fluid and gas receiving system comprises a fixed body relative to the frame in which is formed a housing inside which the fluid receiving nozzle is slidably mounted.

Selon une caractéristique avantageuse de l'invention, le système de réception comprend des moyens d'anti-rotation de la buse de réception par rapport au logement à l'intérieur duquel ladite buse de réception est montée coulissante.According to an advantageous characteristic of the invention, the reception system comprises anti-rotation means of the receiving nozzle with respect to the housing within which said receiving nozzle is slidably mounted.

Selon une caractéristique avantageuse de l'invention, ledit dispositif comprend des moyens de rappel élastique de la buse de réception en position rapprochée par rapport à ladite buse d'alimentation en fluide.According to an advantageous characteristic of the invention, said device comprises means for elastic return of the receiving nozzle in a position close to said fluid supply nozzle.

Le rappel élastique de la buse en position rapprochée permet de maintenir l'entrée de la buse en appui directement ou indirectement contre la sortie du pistolet.The elastic return of the nozzle in the close position makes it possible to maintain the inlet of the nozzle bearing directly or indirectly against the exit of the gun.

Selon une caractéristique avantageuse de l'invention, le système de réception comprend, d'une part, une chambre de réception de gaz dans laquelle s'étend au moins partiellement la buse de réception et dans laquelle débouche l'entrée du conduit d'évacuation de gaz, et, d'autre part, un organe d'étanchéité apte à délimiter avec la paroi périphérique externe de la buse de réception et en coopération avec le canon du pistolet, à l'état appuyé du canon du pistolet contre l'organe d'étanchéité, un espace étanche de communication entre l'entrée du conduit d'évacuation de gaz et la sortie de gaz du pistolet.According to an advantageous characteristic of the invention, the reception system comprises, on the one hand, a gas reception chamber in which at least partially extends the receiving nozzle and into which the inlet of the evacuation duct opens out. of gas, and, secondly, a sealing member adapted to delimit with the outer peripheral wall of the receiving nozzle and in cooperation with the barrel of the gun, in the state supported by the barrel of the pistol against the organ sealing, a sealed communication space between the inlet of the gas exhaust duct and the gas outlet of the gun.

Selon une caractéristique avantageuse de l'invention, ledit organe d'étanchéité est apte à coulisser à l'intérieur de la chambre de réception de gaz suivant une direction sensiblement parallèle à la direction de coulissement de la buse de réception entre une position rapprochée du conduit d'évacuation de gaz et une position écartée dudit conduit d'évacuation de gaz.According to an advantageous characteristic of the invention, said sealing member is able to slide inside the gas reception chamber in a direction substantially parallel to the direction of sliding of the receiving nozzle between a close position of the duct. gas discharge and a position spaced from said gas exhaust duct.

Selon une caractéristique avantageuse de l'invention, ledit organe d'étanchéité est rappelé par des moyens de rappel contre une butée périphérique interne ménagée à l'extrémité de la chambre située du côté de l'entrée du passage de fluide de la buse de réception.According to an advantageous characteristic of the invention, said sealing member is biased by biasing means against an internal peripheral stop provided at the end of the chamber situated on the side of the inlet of the fluid passage of the receiving nozzle. .

Selon une caractéristique avantageuse de l'invention, ledit organe d'étanchéité est apte à rotuler à l'intérieur de ladite chambre de réception de gaz.According to an advantageous characteristic of the invention, said sealing member is able to swivel inside said gas reception chamber.

Selon une caractéristique avantageuse de l'invention, ledit organe d'étanchéité, de type tubulaire, présente une paroi périphérique, qui s'étend à travers la butée périphérique interne de la chambre de réception de gaz, ladite paroi périphérique de l'organe d'étanchéité délimitant une ouverture apte à être raccordée à la sortie de gaz du pistolet pour permettre une communication étanche entre la sortie de gaz du pistolet et le volume délimité entre la paroi périphérique externe de la chambre de réception de gaz et la buse de réception de fluide, à l'état appliqué du pistolet contre l'organe d'étanchéité.According to an advantageous characteristic of the invention, said tubular-type sealing member has a peripheral wall, which extends through the internal peripheral stop of the gas-receiving chamber, said peripheral wall of the body of the sealing defining an aperture adapted to be connected to the gun gas outlet to allow tight communication between the gun gas outlet and the volume defined between the outer peripheral wall of the gas receiving chamber and the receiving nozzle of the gun; fluid, in the applied state of the gun against the sealing member.

Selon une caractéristique avantageuse de l'invention, ladite paroi périphérique de l'organe d'étanchéité est prolongée, du côté intérieur de la chambre, par un épaulement apte à venir en butée contre ladite butée périphérique interne ménagée à l'extrémité de la chambre.According to an advantageous characteristic of the invention, said peripheral wall of the sealing member is extended, on the inside of the chamber, by a shoulder adapted to abut against said internal peripheral stop provided at the end of the chamber. .

Selon une caractéristique avantageuse de l'invention, pour un pistolet dont la paroi périphérique externe du canon est de dimension inférieure à la dimension de l'ouverture délimitée par l'organe d'étanchéité, ledit dispositif comprend un adaptateur rapportable sur l'extrémité de l'organe d'étanchéité. Ledit adaptateur comprend une paroi dans laquelle est ménagé un premier passage traversant, de préférence central, apte à assurer la communication entre la sortie de fluide du pistolet et l'entrée du passage de fluide de la buse de réception, à l'état appliqué du pistolet contre l'adaptateur. Un deuxième passage traversant est aussi ménagé dans ladite paroi et est apte à assurer la communication entre la sortie de gaz du pistolet et le volume délimité entre la paroi périphérique de la chambre et la buse de réception, à l'état appliqué du pistolet contre l'adaptateur. Ladite paroi de l'adaptateur présente, à l'état rapporté de l'adaptateur sur l'organe d'étanchéité, une surface concave, par exemple conique, de concavité orientée du côté opposé à la buse de réception.According to an advantageous characteristic of the invention, for a pistol whose outer peripheral wall of the barrel is of dimension less than the dimension of the opening delimited by the sealing member, said device comprises a reportable adapter on the end of the sealing member. Said adapter comprises a wall in which is formed a first through passage, preferably central, able to ensure communication between the fluid outlet of the gun and the inlet of the fluid passage of the receiving nozzle, in the applied state of the pistol against the adapter. A second through passage is also provided in said wall and is adapted to ensure communication between the gas outlet of the gun and the volume defined between the peripheral wall of the chamber and the receiving nozzle, in the applied state of the pistol against the 'adapter. Said wall of the adapter has, in the attached state of the adapter on the sealing member, a concave surface, for example conical, concavity oriented on the opposite side to the receiving nozzle.

Ladite paroi de l'adaptateur réduit l'ouverture dudit organe d'étanchéité de telle sorte que, à l'état appliqué du pistolet contre l'adaptateur, d'une part, la sortie de fluide à pulvériser du pistolet communique de manière étanche avec l'entrée de la buse de réception de fluide et, d'autre part, la sortie de gaz du pistolet communique de manière étanche avec le conduit d'évacuation de gaz.Said wall of the adapter reduces the opening of said sealing member so that, in the applied state of the pistol against the adapter, on the one hand, the exit spray gun fluid communicates tightly with the inlet of the fluid receiving nozzle and, on the other hand, the gun gas outlet communicates tightly with the gas discharge conduit.

Cet adaptateur permet d'obtenir une bonne étanchéité de la chambre de réception de gaz qui assure la communication entre la sortie de fluide du pistolet et le conduit d'évacuation de gaz. Ainsi, le gaz qui est expulsé par la sortie de fluide du pistolet et qui passe à travers les ouvertures correspondantes de l'adaptateur est évacué par le conduit d'évacuation de gaz du système de réception et non entre l'organe d'étanchéité logé partiellement dans ladite chambre de réception de gaz, et l'enveloppe extérieure du canon du pistolet, encore appelée chapeau, comme se serait le cas en l'absence d'un tel adaptateur.This adapter makes it possible to obtain a good seal of the gas reception chamber which ensures the communication between the fluid outlet of the gun and the gas evacuation duct. Thus, the gas which is expelled by the fluid outlet of the gun and which passes through the corresponding openings of the adapter is discharged through the gas evacuation duct of the receiving system and not between the sealed sealing member. partially in said gas receiving chamber, and the outer casing of the gun barrel, also called hat, as would be the case in the absence of such an adapter.

L'invention sera bien comprise à la lecture de la description suivante d'exemples de réalisation, en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en coupe du dispositif de nettoyage selon l'invention en l'absence de pistolet à nettoyer ;
  • la figure 2 est une vue de détail en coupe axiale du système de réception de fluide et de gaz de la zone II de la figure 1, à l'état rappelé de ladite buse en position rapprochée par rapport à ladite tête d'alimentation en fluide ;
  • la figure 2A est une vue du système de réception de la figure 2, en position écartée de ladite buse, par rapport à ladite tête d'alimentation en fluide ;
  • la figure 3 est une vue du système de réception et de la tête d'alimentation du dispositif selon l'invention à l'état raccordé d'un premier pistolet avec ledit système de réception et ladite tête d'alimentation ;
  • la figure 4 est une vue du système de réception et de la tête d'alimentation du dispositif selon l'invention, à l'état raccordé d'un deuxième pistolet avec ledit système de réception et ladite tête d'alimentation ;
  • la figure 5 est une vue du système de réception et de la tête d'alimentation du dispositif selon l'invention, à l'état raccordé d'un troisième pistolet, appelé mini pistolet, avec ledit système de réception et ladite tête d'alimentation ;
  • la figure 6 est une vue en perspective en coupe axiale du système de réception de liquide et de gaz de la figure 2 ;
  • la figure 6A est une vue éclatée du système de réception de liquide et de gaz de la figure 2.
The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:
  • the figure 1 is a sectional view of the cleaning device according to the invention in the absence of a cleaning gun;
  • the figure 2 is a detail view in axial section of the fluid and gas reception system of zone II of the figure 1 in the recalled state of said nozzle in a position close to said fluid supply head;
  • the Figure 2A is a view of the reception system of the figure 2 in position spaced from said nozzle, with respect to said fluid supply head;
  • the figure 3 is a view of the receiving system and the supply head of the device according to the invention in the connected state of a first gun with said receiving system and said feeding head;
  • the figure 4 is a view of the receiving system and the supply head of the device according to the invention, in the connected state of a second gun with said receiving system and said feeding head;
  • the figure 5 is a view of the receiving system and the supply head of the device according to the invention, in the connected state of a third gun, called mini gun, with said receiving system and said feeding head;
  • the figure 6 is a perspective view in axial section of the liquid and gas receiving system of the figure 2 ;
  • the Figure 6A is an exploded view of the liquid and gas receiving system of the figure 2 .

Comme mentionné ci-dessus, le dispositif de nettoyage 1, objet de l'invention, comprend un bâti 2 support délimitant un volume de nettoyage, tel qu'une enceinte, apte à recevoir au moins partiellement un pistolet 26 de pulvérisation à nettoyer.As mentioned above, the cleaning device 1, object of the invention, comprises a support frame 2 delimiting a cleaning volume, such as an enclosure, adapted to receive at least partially a spray gun 26 to be cleaned.

Le pistolet 26 de pulvérisation comprend notamment une entrée 27 de fluide à pulvériser, dite entrée 27 de peinture, dont l'axe est noté A27, et une sortie 29 de fluide, appelée sortie de peinture, dont l'axe est noté A29. Un conduit interne relie l'entrée 27 de peinture à la sortie 29 de peinture du pistolet 26.The spray gun 26 comprises in particular an inlet 27 for spraying fluid, said entry 27 of paint, whose axis is noted A27, and a fluid outlet 29, called paint outlet, whose axis is noted A29. An inner conduit connects the paint inlet 27 to the paint outlet 29 of the gun 26.

Un tel pistolet comporte encore une entrée 31 de gaz raccordable à une source d'alimentation en gaz, tel que de l'air comprimé. Cette entrée 31 d'air permet, notamment, d'aider la peinture à circuler depuis l'entrée 27 de peinture vers la sortie 29 de fluide et à être éjectée hors dudit pistolet lors d'un actionnement de la gâchette du pistolet. Cette entrée 31 d'air permet également d'alimenter une sortie 30 de gaz du pistolet servant à régler la forme du flux de fluide. Généralement la sortie 30 de gaz du pistolet est formée d'une pluralité d'orifices de sortie, de préférence radiale et dite sortie de gaz sous pression, qui servent à régler la forme du flux de peinture issu de la sortie axiale.Such a gun further comprises a gas inlet 31 connectable to a gas supply source, such as compressed air. This inlet 31 of air allows, in particular, to help the paint to flow from the paint inlet 27 to the fluid outlet 29 and to be ejected from said gun during actuation of the gun trigger. This air inlet 31 also serves to supply a gas outlet 30 of the gun for adjusting the shape of the fluid flow. Generally, the gas outlet of the gun is formed of a plurality of outlet orifices, preferably radial and so-called pressurized gas outlet, which serve to regulate the shape of the flow of paint coming from the axial outlet.

Dans l'exemple illustré aux figures, la sortie 30 de gaz est formée d'orifices de sortie disposés autour de la sortie 29 axiale du pistolet 26. Lorsque le pistolet 26 de pulvérisation est utilisé pour peindre, un godet de peinture (non représenté) est relié à l'entrée 27 de peinture. La peinture sort alors par ladite sortie 29 axiale.In the example illustrated in the figures, the gas outlet 30 is formed with outlet orifices disposed around the axial outlet 29 of the gun 26. When the spray gun 26 is used to paint, a paint bucket (not shown) is connected to the entrance 27 of painting. The paint then exits through said axial outlet 29.

Comme illustré à la figure 1, le bâti 2 support porte une tête 3 d'alimentation en fluide comportant une buse 5 d'alimentation destinée à être reliée à l'entrée 27 de peinture du pistolet 26 de pulvérisation à nettoyer.As illustrated in figure 1 , the frame 2 support carries a feed head 3 fluid having a supply nozzle 5 to be connected to the paint inlet 27 of the spray gun 26 to be cleaned.

La buse 5 d'alimentation est couplée au bâti 2 du dispositif 1 de nettoyage par un porte-buse 50. Le porte-buse 50 affecte la forme d'un corps tubulaire d'axe vertical équipé, à son extrémité inférieure, de la buse 5 d'alimentation et ouvert à son extrémité supérieure pour former une ouverture d'introduction d'une source de fluide de nettoyage, telle qu'un récipient aérosol, à l'intérieur dudit porte-buse 50.The supply nozzle 5 is coupled to the frame 2 of the cleaning device 1 by a nozzle holder 50. The nozzle holder 50 has the shape of a tubular body of vertical axis equipped, at its lower end, with the nozzle 5 and open at its upper end to form an opening for introducing a source of cleaning fluid, such as an aerosol container, into said nozzle holder 50.

Le porte-buse 50 est déplaçable par rapport au châssis 2 suivant un mouvement de monte et baisse. Ainsi, pour positionner la buse 5 d'alimentation et le système 14 de réception respectivement à ladite entrée 27 de peinture et à la sortie 29 du pistolet de pulvérisation, il est possible de régler la hauteur de la buse 5 d'alimentation pour s'adapter à la hauteur de l'entrée 27 de peinture du pistolet, et d'absorber une surlongueur du canon 260 du pistolet 26 grâce à la mobilité de la buse 15 de réception détaillée ci-après, ce qui permet de relier à la buse 5 d'alimentation et au système 14 de réception des pistolets de dimensions différentes comme l'illustrent plus particulièrement les figures 3 à 5.The nozzle holder 50 is movable relative to the frame 2 in a rising and falling movement. Thus, to position the supply nozzle and the receiving system 14 respectively at said paint inlet 27 and at the spray gun outlet 29, it is possible to adjust the height of the supply nozzle 5 for adapt to the height of the paint inlet 27 of the gun, and absorb an extra length of the barrel 260 of the gun 26 through the mobility of the receiving nozzle 15 detailed below, which allows to connect to the nozzle 5 and to the system 14 for receiving pistols of different sizes, as illustrated more particularly by the Figures 3 to 5 .

Lesdits pistolets peuvent différer au niveau des dimensions de l'entrée de peinture, des dimensions de la sortie, de la distance et de l'orientation relative entre l'entrée de peinture et la sortie du pistolet.The guns may differ in the dimensions of the paint entry, the size of the outlet, the distance, and the relative orientation between the paint entry and the gun outlet.

Le dispositif de nettoyage comprend un système 14 de réception de fluide et de gaz destiné à être relié aux sorties 29 et 30 du pistolet 26. Pour pouvoir séparer le fluide éjecté en sortie 29 et provenant de l'entrée 27 du pistolet, du gaz éjecté par la sortie 30 dudit pistolet provenant de l'entrée de gaz 31, le système 14 de réception comprend d'une part, une buse 15 de réception présentant un passage 150 de fluide raccordable en entrée 151 avec la sortie 29 de fluide à pulvériser du pistolet, et raccordé en sortie 152 à des moyens 16 de collecte du fluide pulvérisé, et, d'autre part, un conduit 47 d'évacuation de gaz raccordable en entrée avec la sortie 30 de gaz dudit pistolet 26 par l'intermédiaire d'une chambre 185 de récupération détaillée ci-après. Ledit conduit 47 d'évacuation de gaz débouche en sortie dans une zone, dite zone d'évacuation des gaz, distincte des moyens 16 de collecte du flux de fluide pulvérisé.The cleaning device comprises a fluid and gas receiving system 14 intended to be connected to the outlets 29 and 30 of the gun 26. In order to be able to separate the fluid ejected at the outlet 29 and coming from the inlet 27 of the gun, ejected gas by the outlet 30 of said gun from the gas inlet 31, the receiving system 14 comprises, on the one hand, a receiving nozzle 15 having an inlet-connectable fluid passage 150 with the outlet 29 of the fluid to be sprayed. gun, and connected at the output 152 to means 16 for collecting the sprayed fluid, and, secondly, a conduit 47 for discharging the gas connectable input with the gas outlet 30 of said gun 26 via a recovery chamber 185 detailed below. Said gas outlet duct 43 opens at an outlet in a zone, called the gas evacuation zone, distinct from the means 16 for collecting the flow of sprayed fluid.

Les moyens 16 de collecte du flux de fluide pulvérisé comportent un réservoir raccordé par une conduite 4 à la sortie 152 de la buse 15 de réception de fluide du système de réception 14.The means 16 for collecting the stream of sprayed fluid comprise a reservoir connected via a line 4 to the outlet 152 of the fluid reception nozzle 15 of the receiving system 14.

Lorsqu'on souhaite le nettoyer, le pistolet 26 de pulvérisation est relié au dispositif de nettoyage 1. Plus précisément, le godet de peinture est retiré et l'entrée 27 de peinture est reliée à la buse 5 d'alimentation de la tête 3 d'alimentation. La sortie 29 de peinture et la sortie 30 de gaz sont appliquées contre le système de réception 14 pour être raccordées respectivement à l'entrée 151 de la buse de réception de fluide et à l'entrée du conduit d'évacuation de gaz, par l'intermédiaire d'une chambre de réception de gaz 185 comme détaillé ci-après.When it is desired to clean it, the spray gun 26 is connected to the cleaning device 1. More specifically, the paint bucket is removed and the paint inlet 27 is connected to the feed nozzle 5 of the head 3. 'food. The paint outlet 29 and the gas outlet 30 are applied against the receiving system 14 to be connected respectively to the inlet 151 of the fluid receiving nozzle and to the inlet of the gas discharge duct, by means of FIG. intermediate of a gas reception chamber 185 as detailed below.

La tête 3 d'alimentation peut être commandée pour faire circuler du produit nettoyant. Un exemple de réalisation de la tête 3 d'alimentation et du bâti 2 est décrit en détail dans la demande de brevet WO2010050603 .The feed head 3 can be controlled to circulate cleaner. An embodiment of the feed head 3 and the frame 2 is described in detail in the patent application. WO2010050603 .

La tête 3 d'alimentation comprend une buse 5 d'alimentation munie d'au moins deux entrées indépendantes d'alimentation en fluide. Lesdites entrées présentent chacune un débouché distinct dans le conduit de ladite buse 5 d'alimentation. Lesdites entrées sont raccordables l'une, à une source de fluide de nettoyage, l'autre à une source d'air comprimé.The feed head 3 comprises a feed nozzle 5 provided with at least two independent fluid supply inlets. Said inlets each have a distinct outlet in the conduit of said feed nozzle. The said inlets are connectable to one source of cleaning fluid and the other to a source of compressed air.

Ainsi, à l'état raccordé des entrées de la buse 5 d'alimentation à leur source de fluide respective, pendant la phase de nettoyage, le fluide de nettoyage alimente par une entrée la buse 5 d'alimentation et passe successivement par l'entrée 27 de peinture, le conduit interne, et la sortie 29 axiale de peinture du pistolet.Thus, in the connected state of the inlet of the supply nozzle to its respective fluid source, during the cleaning phase, the cleaning fluid feeds the inlet nozzle 5 via an inlet and passes successively through the paint inlet 27, the inner duct, and the axial outlet 29 of the paint gun.

Pendant la phase de séchage, de l'air comprimé alimente la buse 5 d'alimentation, par l'autre entrée de la buse 5 d'alimentation, et passe successivement par l'entrée 27 de peinture, le conduit interne, et la sortie 29 axiale du pistolet. Ce séchage permet d'évacuer le produit de nettoyage restant dans le conduit interne du pistolet entre entrée 27 et sortie axiale 29 dudit pistolet.During the drying phase, compressed air feeds the feed nozzle, through the other inlet of the feed nozzle, and passes successively through the paint inlet 27, the inner conduit, and the outlet. 29 axis of the gun. This drying makes it possible to evacuate the cleaning product remaining in the internal conduit of the gun between inlet 27 and axial outlet 29 of said gun.

La tête 3 d'alimentation est disposée à, ou au voisinage du sommet du bâti et s'étend donc essentiellement au-dessus du pistolet à l'état introduit du pistolet dans le volume de nettoyage.The feed head 3 is disposed at or near the top of the frame and therefore extends substantially above the gun in the infeed state of the gun into the cleaning volume.

Ladite buse 15 de réception est montée mobile à déplacement par rapport au bâti 2 support, suivant une direction sensiblement parallèle à l'axe A15 de l'entrée 151 du passage 150 de fluide de la buse 15 de réception, entre une position rapprochée de la tête 3 d'alimentation en fluide et une position écartée de ladite tête 3 d'alimentation en fluide.Said receiving nozzle 15 is mounted movably relative to the support frame 2, in a direction substantially parallel to the axis A15 of the inlet 151 of the fluid passage 150 of the receiving nozzle 15, between a position close to the head 3 fluid supply and a position spaced from said head 3 of fluid supply.

Autrement dit, pour une position donnée de la buse d'alimentation 5, la distance, projetée sur ledit axe A15 d'entrée de la buse de réception 15, entre l'entrée 151 de la buse de réception 15 en position rapprochée et la sortie de la buse d'alimentation 5 est inférieure à la distance projetée sur ledit axe A15 entre l'entrée 151 de la buse de réception 15 en position écartée et la sortie de la buse d'alimentation 5 dans ladite position écartée de ladite buse de réception 15.In other words, for a given position of the feed nozzle 5, the distance, projected on said inlet axis 15 of the receiving nozzle 15, between the inlet 151 of the receiving nozzle 15 in close position and the outlet of the feed nozzle 5 is smaller than the projected distance on said axis A15 between the inlet 151 of the receiving nozzle 15 in the spaced-apart position and the outlet of the feed nozzle 5 in said position spaced from said receiving nozzle 15.

L'axe A15 de l'entrée 151 du passage 150 de fluide de la buse 15 de réception correspond à un axe orthogonal au plan moyen passant par l'embouchure de l'entrée 151 du passage 150 de fluide. Dans l'exemple illustré aux figures, ledit axe est confondu avec l'axe de la buse 15.The axis A15 of the inlet 151 of the fluid passage 150 of the receiving nozzle 15 corresponds to an axis orthogonal to the mean plane passing through the mouth of the inlet 151 of the fluid passage 150. In the example illustrated in the figures, said axis coincides with the axis of the nozzle 15.

La mobilité de la buse 15 de réception de fluide pulvérisé permet ainsi de connecter simultanément l'entrée de peinture 27 du pistolet 26 à la tête d'alimentation 5 en fluide et la sortie 29 de peinture du pistolet à l'entrée 151 de la buse du système de réception 14, pour des pistolets présentant différentes longueurs de canon, c'est-à-dire pour des pistolets dont les distances entre l'entrée 27 de peinture et la sortie 29 de peinture, prises en projection, suivant l'axe A27 de l'entrée 27, sur l'axe A29 de la sortie 29 de peinture, sont différentes.The mobility of the spray fluid receiving nozzle 15 thus makes it possible to simultaneously connect the paint inlet 27 of the gun 26 to the fluid supply head 5 and the paint outlet 29 of the gun to the inlet 151 of the nozzle of the reception system 14, for pistols having different gun lengths, that is to say for pistols whose distances between the entry 27 of paint and the exit 29 of paint, taken in projection, along the axis A27 of the entrance 27, on the axis A29 of the exit 29 of paint, are different.

Le système 14 de réception comprend un corps 40 fixe par rapport au bâti 2 dans lequel est ménagé un logement 405 à l'intérieur duquel la buse 15 de réception est montée coulissante. Un conduit 45 est ménagé dans le corps 40 du système 14 de réception. Une extrémité du conduit 45 débouche dans le logement 405 à l'intérieur duquel la buse de réception 15 est montée coulissante et l'autre extrémité dudit conduit est raccordée par l'intermédiaire de la conduite 4 au réservoir de collecte 16 de fluide.The receiving system 14 comprises a body 40 fixed relative to the frame 2 in which is formed a housing 405 inside which the receiving nozzle 15 is slidably mounted. A duct 45 is formed in the body 40 of the receiving system 14. One end of the conduit 45 opens into the housing 405 inside which the receiving nozzle 15 is slidably mounted and the other end of said conduit is connected via the pipe 4 to the fluid collection tank 16.

En particulier, ladite buse 15 de réception comprend un corps cylindrique 158 auquel est couplée une tête de buse 159 à l'extrémité libre de laquelle débouche ladite entrée 151 de passage 150 de fluide. Ledit corps de buse 158 est monté dans ledit logement 405.In particular, said receiving nozzle 15 comprises a cylindrical body 158 to which is coupled a nozzle head 159 at the free end of which opens said inlet 151 150 passage of fluid. Said nozzle body 158 is mounted in said housing 405.

Ladite buse 15 de réception est, à l'état raccordé avec ladite sortie 29 axiale, apte à empêcher toute action du gaz issu des sorties 30 de gaz sur le flux de fluide issu de la sortie axiale 29. Autrement dit, le flux de fluide sortant de la sortie axiale 29 du pistolet 26 est isolé du flux de gaz sortant de la sortie 30 de gaz du pistolet 26.Said receiving nozzle 15 is, in the state connected with said axial outlet 29, able to prevent any action of the gas coming from the gas outlets 30 on the flow of fluid coming from the axial outlet 29. In other words, the flow of fluid leaving the axial outlet 29 of the gun 26 is isolated from the flow of gas leaving the gas outlet 30 of the gun 26.

Comme illustré plus particulièrement aux figures 2 et 2A, le système 14 de réception comprend des moyens d'anti-rotation 156, 157 de la buse de réception 15 par rapport au logement 405 à l'intérieur duquel ladite buse de réception 15 est montée coulissante. Lesdits moyens d'anti-rotation 156, 157 comprennent une gorge 156 ménagée dans le corps cylindrique de la buse de réception 15 selon une direction sensiblement parallèle à la direction de coulissement de la buse 15 de réception et une goupille 157 solidaire du corps du logement qui s'étend dans ladite gorge (perpendiculairement) à l'axe de la gorge.As illustrated more particularly in Figures 2 and 2A , the receiving system 14 comprises anti-rotation means 156, 157 of the receiving nozzle 15 with respect to the housing 405 inside which said nozzle receiving 15 is slidably mounted. Said anti-rotation means 156, 157 comprise a groove 156 formed in the cylindrical body of the receiving nozzle 15 in a direction substantially parallel to the direction of sliding of the receiving nozzle 15 and a pin 157 integral with the housing body which extends in said groove (perpendicularly) to the axis of the groove.

Ledit dispositif 1 comprend des moyens de rappel 155 élastique de la buse 15 de réception en position rapprochée par rapport à ladite buse 3 d'alimentation en fluide. Lesdits moyens de rappel 155 élastique de la buse 15 de réception comprennent un organe élastique, tel qu'un ressort, dont une extrémité est solidaire du logement 405 du système 14 de réception et dont l'extrémité opposée est solidaire de la buse de réception 15.Said device 1 comprises elastic return means 155 of the receiving nozzle 15 in a position close to said fluid supply nozzle 3. Said elastic return means 155 of the receiving nozzle 15 comprise an elastic member, such as a spring, one end of which is integral with the housing 405 of the receiving system 14 and the opposite end of which is integral with the receiving nozzle 15 .

Le système 14 de réception comprend aussi une chambre 185 de réception de gaz dans laquelle s'étend au moins partiellement la buse 15 de réception et dans laquelle débouche l'entrée du conduit 47 d'évacuation de gaz. Ladite chambre 185 de réception loge un organe d'étanchéité 19 apte à délimiter avec la paroi périphérique externe de la buse 15 de réception et en coopération avec la paroi périphérique externe du canon 260 du pistolet, à l'état appuyé du canon du pistolet contre l'organe d'étanchéité 19, un espace annulaire étanche de communication entre l'entrée du conduit 47 d'évacuation de gaz et la sortie 30 de gaz du pistolet 26. En particulier, l'organe d'étanchéité 19 délimite une ouverture apte à être raccordée à la sortie de gaz 30 du pistolet pour permettre une communication étanche entre la sortie de gaz 30 du pistolet et le volume délimité entre la paroi périphérique de la chambre 185 et la buse 15 de réception.The receiving system 14 also comprises a gas reception chamber 185 in which at least partially extends the receiving nozzle 15 and into which the inlet of the gas evacuation conduit 47 opens. Said receiving chamber 185 houses a sealing member 19 able to delimit with the outer peripheral wall of the receiving nozzle 15 and in cooperation with the outer peripheral wall of the gun barrel 260, in the state of the gun barrel against the sealing member 19, a sealed annular space for communication between the inlet of the gas discharge pipe 47 and the gas outlet 30 of the gun 26. In particular, the sealing member 19 defines a suitable opening to be connected to the gas outlet 30 of the gun to allow tight communication between the gas outlet 30 of the gun and the volume defined between the peripheral wall of the chamber 185 and the receiving nozzle 15.

Ledit organe d'étanchéité 19 est chargé par un ressort 192 et forme une bague rotulante comme détaillé ci-après.Said sealing member 19 is loaded by a spring 192 and forms a swivel ring as detailed below.

Le conduit 47 d'évacuation de gaz est raccordable en entrée avec la sortie 30 de gaz dudit pistolet, par l'intermédiaire dudit organe d'étanchéité 19 détaillé ci-après. Le conduit 47 d'évacuation débouche en sortie dans une zone dite zone d'évacuation des gaz distincte des moyens 16 de collecte du flux de fluide pulvérisé pour évacuer les gaz du pistolet dans une zone d'évacuation.The gas evacuation pipe 47 is connectable at the inlet with the outlet 30 of said gun, through said sealing member 19 detailed below. The exhaust duct 47 opens at an outlet in an area called the gas evacuation zone distinct from the means 16 for collecting the stream of sprayed fluid in order to evacuate the gases from the gun in an evacuation zone.

La paroi périphérique externe de la chambre 185 de réception de gaz est formée par une bague 18 entourant ladite buse 15, en particulier la partie tronconique de ladite buse 15.The outer peripheral wall of the gas reception chamber 185 is formed by a ring 18 surrounding said nozzle 15, in particular the frustoconical part of said nozzle 15.

L'entrée du conduit d'évacuation 47 de gaz débouche dans l'espace délimité entre la paroi de la bague 18 et la buse 15 de réception.The inlet of the gas discharge conduit 47 opens into the space defined between the wall of the ring 18 and the receiving nozzle 15.

L'organe d'étanchéité 19 comprend une paroi périphérique 190 de diamètre légèrement inférieur au diamètre interne de la bague 18. Ladite paroi périphérique 190 de l'organe d'étanchéité 19 est prolongée, du côté intérieur de la chambre 185, par un épaulement 191 apte à venir en butée contre une butée radiale interne 181 ménagée à l'extrémité de la chambre 185. L'organe d'étanchéité 19 peut coulisser le long de la bague 18 entre une position compressée du ressort 192 et une position de rappel de l'organe d'étanchéité 19 contre ladite butée radiale interne 181 ménagée au niveau de l'extrémité libre de la bague 18, dans laquelle ledit organe d'étanchéité 19 est rappelé.The sealing member 19 comprises a peripheral wall 190 of diameter slightly smaller than the internal diameter of the ring 18. Said peripheral wall 190 of the sealing member 19 is extended, on the inside of the chamber 185, by a shoulder 191 adapted to abut against an internal radial stop 181 formed at the end of the chamber 185. The sealing member 19 can slide along the ring 18 between a compressed position of the spring 192 and a return position of the sealing member 19 against said inner radial stop 181 formed at the free end of the ring 18, wherein said sealing member 19 is recalled.

Avantageusement, la paroi périphérique 190 dudit organe d'étanchéité 19 présente une surface périphérique externe convexe pour rotuler autour de la buse 15 de réception de fluide, et ainsi permettre d'assurer une bonne étanchéité du passage de communication entre la sortie de gaz 30 du pistolet et le conduit d'évacuation 47 de gaz et du passage de communication entre la sortie 29 du pistolet et l'entrée 151 de la buse de réception lorsque le pistolet 26 a besoin d'être légèrement incliné par rapport à l'axe de la buse pour connecter l'entrée de peinture 27 à la buse d'alimentation 5 et la sortie axiale 29 à l'entrée 151 de la buse de réception.Advantageously, the peripheral wall 190 of said sealing member 19 has a convex outer peripheral surface for swiveling around the nozzle 15 for receiving fluid, and thus making it possible to ensure a good seal of the communication passage between the gas outlet 30 of the gun and the exhaust pipe 47 of gas and the communication passage between the outlet 29 of the gun and the inlet 151 of the receiving nozzle when the gun 26 needs to be slightly inclined with respect to the axis of the nozzle for connecting the paint inlet 27 to the feed nozzle 5 and the axial outlet 29 to the inlet 151 of the receiving nozzle.

Comme l'organe ou joint d'étanchéité 19 assure l'étanchéité avec le canon du pistolet, l'air propre sortant de la sortie 30 et issu de l'entrée 31 du pistolet, est obligé de s'évacuer par le conduit d'évacuation 47 de gaz et est amené dans l'atmosphère de sorte que le volume de fluide à traiter collecté dans les moyens de collecte est moindre que dans l'état de la technique.As the member or seal 19 seals with the barrel of the gun, clean air leaving the outlet 30 and from the inlet 31 of the gun, is forced to evacuate through the conduit of evacuation 47 of gas and is brought into the atmosphere so that the volume of fluid to be treated collected in the collection means is less than in the state of the art.

La paroi périphérique 190 de l'organe d'étanchéité s'étend, à l'état rappelé de l'organe d'étanchéité 19 contre la butée radiale interne 181, en saillie de ladite butée radiale interne 181. La mise en saillie de l'organe d'étanchéité permet, suivant les type de pistolet, de s'assurer que le canon 260 du pistolet 26 vient en appui d'abord sur l'organe d'étanchéité 19 avant que la sortie 29 de peinture du pistolet soit en appui sur la buse 15, ce qui permet d'obtenir une bonne étanchéité de l'espace délimité entre l'organe d'étanchéité 19, la bague 18 et la buse 15, qui communique avec le conduit de raccordement 47. En outre, la mise en saillie de l'organe d'étanchéité 19 permet comme illustré plus particulièrement à la figure 5 de mettre en place et de maintenir un adaptateur 8 pour mini pistolet sur ladite paroi périphérique 190 de l'organe d'étanchéité 19.The peripheral wall 190 of the sealing member extends, in the return state of the sealing member 19 against the internal radial abutment 181, projecting from said internal radial abutment 181. The protrusion of the sealing member allows, depending on the type of gun, to ensure that the gun 260 of the gun 26 bears first on the sealing member 19 before the paint outlet 29 of the gun is in support on the nozzle 15, which provides a good seal of the space defined between the sealing member 19, the ring 18 and the nozzle 15, which communicates with the connecting pipe 47. In addition, the protruding from the sealing member 19 allows as illustrated more particularly to the figure 5 to set up and maintain an adapter 8 for mini-gun on said peripheral wall 190 of the sealing member 19.

La figure 3 illustre le cas du positionnement d'un pistolet de longueur de canon donnée dans le dispositif de nettoyage selon l'invention. L'entrée de peinture 27 est connectée à la sortie de la tête 3 d'alimentation et la sortie 29 du pistolet est alignée avec l'entrée 151 de la buse 15 de réception par contact d'appui du canon du pistolet contre la buse 15 de réception qui peut reculer jusqu'à une position donnée grâce à sa mobilité de coulissement pour permettre au pistolet d'être correctement positionné dans le dispositif de nettoyage.The figure 3 illustrates the case of the positioning of a given gun length gun in the cleaning device according to the invention. The paint inlet 27 is connected to the outlet of the feed head 3 and the outlet 29 of the gun is aligned with the inlet 151 of the receiving nozzle 15 by bearing contact of the gun barrel against the nozzle 15 receiving which can move back to a given position due to its sliding mobility to allow the gun to be properly positioned in the cleaning device.

La figure 4 illustre le cas du positionnement d'un autre pistolet de longueur de canon plus importante que celle du pistolet de la figure 3. Comme pour l'exemple de la figure 3, l'entrée de peinture 27 est connectée à la sortie de la tête 3 d'alimentation et la sortie 29 du pistolet est alignée avec l'entrée 151 de la buse 15 de réception. Dans cet exemple de la figure 4, la surlongueur du canon du pistolet, par comparaison avec la longueur du canon du pistolet de la figure 3, est absorbée par le dispositif de nettoyage grâce à la mobilité de coulissement de la buse 15 de réception. Ainsi, dans l'exemple illustré à la figure 4, la buse 15 de réception est repoussée par le canon du pistolet 26 dans une position différente de celle de la figure 3. En effet, dans l'exemple illustré à la figure 4, le ressort de rappel de la buse 15 est plus comprimé qu'il ne l'est dans l'exemple illustré à la figure 3 pour lequel le canon du pistolet est plus court.The figure 4 illustrates the case of the positioning of another gun of longer barrel length than that of the gun of the figure 3 . As for the example of figure 3 , the paint inlet 27 is connected to the outlet of the feed head 3 and the outlet 29 of the gun is aligned with the inlet 151 of the receiving nozzle 15. In this example of the figure 4 , the extra length of the gun barrel, compared with the length of the gun barrel of the figure 3 is absorbed by the cleaning device by virtue of the sliding mobility of the receiving nozzle 15. So, in the example shown in the figure 4 , the receiving nozzle 15 is pushed back by the barrel of the gun 26 in a position different from that of the figure 3 . Indeed, in the example shown in figure 4 , the return spring of the nozzle 15 is more compressed than it is in the example shown in FIG. figure 3 for which the barrel of the gun is shorter.

L'organe d'étanchéité rotulant 19 permet, en combinaison avec la mobilité de coulissement de la buse 15 de réception, d'introduire la sortie 29 du pistolet dans la bague 18, avec si nécessaire une inclinaison donnée, afin de pouvoir ensuite aligner ladite sortie 29 avec l'entrée 151 de la buse 15 de réception tout en connectant l'entrée de peinture 27 à la sortie de la tête 3 d'alimentation.The swiveling sealing member 19 makes it possible, in combination with the sliding mobility of the receiving nozzle 15, to introduce the outlet 29 of the gun into the ring 18, with if necessary a given inclination, in order then to be able to align said outlet 29 with inlet 151 of the receiving nozzle 15 while connecting the paint inlet 27 to the outlet of the feed head 3.

On observe que pour des pistolets de longueurs différentes tels qu'illustrés aux figures 3 et 4, le dispositif selon l'invention, grâce à la mobilité de coulissement de la buse de réception, permet d'aligner l'entrée de la buse 15 de réception avec la sortie 29 du pistolet 26, ainsi que l'entrée de peinture 27 du pistolet avec la sortie de la tête 3 d'alimentation. En particulier, la sortie 152 du passage de fluide 150 de la buse de réception, reste, quelle que soit la position de coulissement de la buse 15 de réception, en communication avec les moyens 16 de collecte pour permettre la collecte du produit sale sortant du pistolet 26.It is observed that for pistols of different lengths as illustrated in FIG. figures 3 and 4 the device according to the invention, by virtue of the sliding mobility of the receiving nozzle, makes it possible to align the inlet of the reception nozzle 15 with the outlet 29 of the gun 26, as well as the paint inlet 27 of the gun with the output of the head 3 feeding. In particular, the outlet 152 of the fluid passage 150 of the receiving nozzle remains, irrespective of the sliding position of the receiving nozzle 15, in communication with the collecting means 16 to allow the collection of the dirty product leaving the pistol 26.

L'adaptateur 8 pour mini pistolet est détaillé ci-après.The adapter 8 for mini gun is detailed below.

Comme illustré à la figure 5, pour un pistolet 26, de type mini-pistolet, dont la paroi périphérique externe du canon est de dimension inférieure à la dimension de l'ouverture délimitée par l'organe d'étanchéité 19, ledit dispositif comprend un adaptateur 8 rapportable sur l'extrémité de l'organe d'étanchéité 19.As illustrated in figure 5 for a pistol 26 of the mini-pistol type, whose outer peripheral wall of the barrel is smaller than the size of the opening delimited by the sealing member 19, said device comprises an adapter 8 reportable on the end of the sealing member 19.

Ledit adaptateur 8 présente un premier passage 81 traversant, de préférence central, apte à assurer la communication entre la sortie de fluide 29 du pistolet et l'entrée 151 du passage 150 de fluide de la buse 15 de réception, à l'état appliqué du pistolet 26 contre l'adaptateur. Ledit adaptateur 8 présente aussi un deuxième passage traversant 82 apte à assurer la communication entre la sortie de gaz 30 du pistolet et le volume délimité entre la paroi périphérique de la chambre 185 et la buse 15 de réception, à l'état appliqué du pistolet contre l'adaptateur 8.Said adapter 8 has a first through passage 81, preferably central, capable of ensuring communication between the fluid outlet 29 of the gun and the inlet 151 of the fluid passage 150 of the receiving nozzle 15, in the applied state of the gun 26 against the adapter. Said adapter 8 also has a second through passage 82 capable of ensuring communication between the gas outlet 30 of the gun and the volume delimited between the peripheral wall of the chamber 185 and the receiving nozzle 15, in the applied state of the pistol against the adapter 8.

Ledit adaptateur 8 présente aussi une paroi 80, de préférence de forme générale conique et de concavité orientée du côté extérieur de l'organe d'étanchéité, qui, à l'état rapporté de l'adaptateur 8 sur l'organe d'étanchéité 19, réduit l'ouverture dudit organe d'étanchéité 19, de manière à permettre, d'une part, à la sortie 29 de fluide à pulvériser du pistolet 26 appliqué contre l'adaptateur 8 de communiquer de manière étanche avec l'entrée de la buse 15 de réception et, d'autre part, à la sortie 30 de gaz du pistolet 26 appliqué contre l'adaptateur 8 de communiquer de manière étanche avec le conduit d'évacuation 47.Said adapter 8 also has a wall 80, preferably of generally conical shape and concavity oriented on the outer side of the sealing member, which, in the attached state of the adapter 8 on the sealing member 19 , reduces the opening of said sealing member 19, so as to allow, on the one hand, the outlet 29 of spray fluid gun 26 applied against the adapter 8 to communicate in a sealed manner with the inlet of the receiving nozzle 15 and, on the other hand, at the gas outlet 30 of the gun 26 applied against the adapter 8 to communicate in leaktight manner with the exhaust duct 47.

Ainsi, la paroi du canon, ou le chapeau du canon, qui s'étend autour de la sortie 29 de fluide à pulvériser et de la sortie de gaz 30 externe dudit pistolet 26 peut venir en appui contre l'organe d'étanchéité 19 par l'intermédiaire dudit adaptateur 8 pour assurer la communication étanche entre la sortie de gaz 30 du pistolet et le volume délimité entre la paroi périphérique de la chambre 185 et la buse 15 de réception, à l'état appliqué du pistolet contre l'adaptateur 8.Thus, the wall of the barrel, or the barrel cap, which extends around the outlet 29 of the fluid to be sprayed and the external gas outlet 30 of said gun 26 can bear against the sealing member 19. through said adapter 8 to ensure the sealed communication between the gas outlet 30 of the gun and the volume defined between the peripheral wall of the chamber 185 and the receiving nozzle 15, in the applied state of the gun against the adapter 8 .

Le bord périphérique externe de la paroi 80 de réduction d'ouverture est muni d'un retour d'appui contre la face externe de la paroi périphérique 190 de l'organe d'étanchéité19. Ledit retour et la paroi de réduction dudit adaptateur délimitent entre eux une gorge d'insertion du bord libre de la paroi périphérique 190 de l'organe d'étanchéité19.The outer peripheral edge of the opening reduction wall 80 is provided with a bearing return against the outer face of the peripheral wall 190 of the sealing member 19. Said return and the reduction wall of said adapter delimit between them an insertion groove of the free edge of the peripheral wall 190 of the sealing member19.

La partie du canon du pistolet qui s'étend autour de la sortie 30 du pistolet est apte à venir en appui, directement ou indirectement, contre la paroi périphérique 190 dudit organe d'étanchéité 19, tandis que la partie du canon du pistolet 26 qui s'étend entre la sortie axiale 29 et la sortie 30 du pistolet 26, vient en appui directement ou indirectement contre la partie de la buse 15 qui entoure l'entrée 151 de ladite buse.The portion of the barrel of the pistol that extends around the outlet 30 of the pistol is able to bear, directly or indirectly, against the peripheral wall 190 of said sealing member 19, while the part of the barrel of the pistol 26 which extends between the axial outlet 29 and the outlet 30 of the gun 26, abuts directly or indirectly against the portion of the nozzle 15 which surrounds the inlet 151 of said nozzle.

Comme illustré plus particulièrement aux figures 3 et 4, à l'état relié des sorties 29, 30 du pistolet au système 14 de réception, l'organe d'étanchéité 19 entoure à contact d'appui étanche le canon du pistolet et empêche l'air sortant de l'extrémité du canon du pistolet par les sorties 30 de gaz de s'échapper hors du volume délimité par la bague 18, la buse 15 et ledit organe d'étanchéité 19, et avec lequel communique l'entrée du conduit d'évacuation 47 de gaz.As illustrated more particularly in figures 3 and 4 , in the connected state of the outputs 29, 30 of the gun to the receiving system 14, the sealing member 19 surrounds the gun barrel with sealing contact and prevents the air issuing from the end of the barrel of the gun. gun by the gas outlets 30 to escape out of the volume defined by the ring 18, the nozzle 15 and said sealing member 19, and with which communicates the inlet of the exhaust pipe 47 gas.

Il doit être noté que l'extrémité de la buse 15 de réception est de préférence réalisée en un matériau élastiquement déformable. On peut voir que la buse 15 de réception présente une forme cylindro-conique. Cela permet de relier la buse 15 de réception à des pistolets présentant des sorties de peinture de diamètres différents.It should be noted that the end of the receiving nozzle 15 is preferably made of an elastically deformable material. It can be seen that the receiving nozzle has a cylindro-conical shape. This makes it possible to connect the receiving nozzle 15 to guns having paint outlets of different diameters.

Comme rappelé ci-dessus, ledit conduit 47 d'évacuation des gaz comporte une entrée qui débouche dans le passage formé par l'espace laissé libre entre la bague 18 et la buse 15 de réception, en particulier la partie tronconique de ladite buse 15, et une extrémité opposée ou sortie qui débouche dans la zone d'évacuation des gaz. Dans les exemples représentés, la zone d'évacuation des gaz est formée par l'air ambiant entourant le dispositif de nettoyage de sorte que ledit conduit d'évacuation des gaz débouche à l'air libre.As mentioned above, said gas discharge duct 47 has an inlet which opens into the passage formed by the space left free between the ring 18 and the receiving nozzle 15, in particular the frustoconical part of said nozzle 15, and an opposite end or outlet which opens into the gas evacuation zone. In the examples shown, the gas evacuation zone is formed by the ambient air surrounding the cleaning device so that said gas evacuation duct opens into the open air.

A cet effet, le bâti 2 support comporte, dans sa zone dite arrière, opposée à son ouverture frontale, au moins une, de préférence une pluralité d'ouvertures correspondant au débouché à l'air libre du ou des conduits d'évacuation des gaz.For this purpose, the frame 2 support comprises, in its so-called rear zone, opposite to its front opening, at least one, preferably a plurality of openings corresponding to the outlet to the open air or the exhaust ducts.

Avantageusement, ledit organe 14 de réception comporte une pluralité de conduits 47 d'évacuation des gaz. Lesdits conduits sont disposés à équidistance de l'axe de la buse 15 de réception. Ainsi, les entrées des conduits 47 d'évacuation de gaz dans l'espace ménagé entre bague 18 et buse 15 de réception sont disposées sur un cercle de centre situé sur l'axe central de la buse de réception. On augmente ainsi les possibilités d'évacuation de gaz dans l'atmosphère.Advantageously, said receiving member 14 comprises a plurality of conduits 47 for evacuation of gases. Said conduits are arranged equidistant from the axis of the receiving nozzle 15. Thus, the entries of the gas discharge conduits 47 in the space between the ring 18 and the receiving nozzle 15 are arranged on a center circle located on the central axis of the receiving nozzle. This increases the possibilities of evacuation of gases in the atmosphere.

Pendant une phase de nettoyage, le produit de nettoyage part de la tête d'alimentation 3 et passe successivement par la buse 5 d'alimentation, l'entrée 27 de peinture, le conduit interne, la sortie 29 du pistolet, l'organe 14 de réception puis arrive dans les moyens 16 de collecte.During a cleaning phase, the cleaning product leaves the feed head 3 and passes successively through the feed nozzle 5, the paint inlet 27, the internal pipe, the outlet 29 of the gun, the element 14 reception and then arrives in the collection means 16.

Le produit de nettoyage circule donc en circuit clos de la tête 3 d'alimentation aux moyens 16 de collecte.The cleaning product therefore circulates in a closed circuit from the feed head 3 to the collection means 16.

Après avoir fait circuler du produit de nettoyage, la tête 3 d'admission peut être commandée pour faire passer de l'air sous pression dans le circuit fermé précité afin de sécher le pistolet de pulvérisation et plus précisément d'évacuer le produit nettoyant restant dans le conduit interne.After circulating the cleaning product, the inlet head 3 can be controlled to pass air under pressure in the closed circuit mentioned above to dry the spray gun and more specifically to evacuate the cleaning product remaining in the internal conduit.

La présente invention n'est nullement limitée aux modes de réalisation décrits et représentés, mais l'homme du métier saura y apporter toute variante conforme à son esprit sans s'éloigner de l'étendue des revendications.The present invention is not limited to the embodiments described and shown, but the skilled person will be able to make any variant within his mind without departing from the scope of the claims.

Claims (11)

  1. A cleaning device (1) for a spray gun (26), said gun (26) having an inlet (27) for fluid to be sprayed, called paint inlet (27), an outlet (29) for said fluid to be sprayed, a pressurized gas inlet (31) and a pressurized gas outlet (30),
    said cleaning device (1) comprising:
    - a support frame (2),
    - a fluid supply head (3) carried by said frame (2) and able to be connected to said paint inlet (27) of the gun (26), and
    - a fluid and gas receiving system (14) that comprises:
    - on the one hand, a fluid receiving nozzle (15) having a fluid passage (150) able to be connected at its inlet (151) with the outlet (29) for fluid to be sprayed of the gun, and connected at its outlet (152) to means (16) for collecting the sprayed fluid, and
    - on the other hand, a gas discharge pipe (47) that can be connected at its inlet with the gas outlet (30) of said gun (26),
    characterized in that said fluid receiving nozzle (15) is mounted movably relative to the support frame (2), in a direction substantially parallel to the axis of the inlet (151) of the fluid passage (150) of the receiving nozzle (15), between a close position of the fluid supply head (3) and a separated position of said fluid supply head (3).
  2. The device (1) according to claim 1, characterized in that the fluid and gas receiving system (14) comprises a body (40) that is stationary relative to the frame (2) in which a housing (405) is arranged inside which the fluid receiving nozzle (15) is slidingly mounted.
  3. The device (1) according to claim 2, characterized in that the receiving system (14) comprises means (156, 157) preventing rotation of the fluid receiving nozzle (15) relative to the housing (405) inside which said receiving nozzle (15) is slidingly mounted.
  4. The device (1) according to one of the preceding claims, characterized in that said device (1) comprises elastic return means (155) returning the fluid receiving nozzle (15) to a close position relative to said fluid supply nozzle (3).
  5. The device (1) according to one of the preceding claims, characterized in that the receiving system (14) comprises, on the one hand, a gas receiving chamber (185) in which the receiving nozzle (15) extends at least partially and in which the inlet of the gas discharge pipe (47) emerges, and on the other hand, a sealing member (19) able to define, with the outer peripheral wall of the fluid receiving nozzle (15) and in cooperation with the barrel (260) of the gun, in the state of the barrel of the gun pressed against the sealing member (19), a tight communication space between the inlet of the gas discharge pipe (47) and the gas outlet (30) of the gun (26).
  6. The device (1) according to claim 5, characterized in that said sealing member (19) is able to slide inside the gas receiving chamber (185) in a direction substantially parallel to the sliding direction of the receiving nozzle (15) between a close position of the gas discharge pipe (47) and a separated position of said gas discharge pipe (47).
  7. The device (1) according to claim 6, characterized in that said sealing member (19) is returned by return means (192) against an inner peripheral stop (181) arranged at the end of the gas receiving chamber (185) opposite the gas discharge pipe.
  8. The device (1) according to claim 7, characterized in that said sealing member (19), of the tubular type, has a peripheral wall (190), which extends through the inner peripheral stop (181) of the gas receiving chamber (185), said peripheral wall (190) of the sealing member (19) defining an opening able to be connected to the gas outlet (30) of the gun to allow tight communication between the gas outlet (30) of the gun and the volume defined between the peripheral wall of the chamber (185) and the receiving nozzle (15), in the state of the gun (26) pressed against said sealing member (19).
  9. The device (1) according to one of claims 7 or 8, characterized in that said peripheral wall (190) of the sealing member (19) is extended, from the other side of the chamber (185), by a shoulder (191) able to abut against said inner peripheral wall (181) arranged at the end of the chamber (185).
  10. The device (1) according to one of claims 5 to 9, characterized in that said sealing member (19) is able to roll inside said gas receiving chamber (185).
  11. The device according to one of claims 5 to 10, characterized in that, for a gun (26) whereof the outer peripheral wall of the barrel has a dimension smaller than the dimension of the opening defined by the sealing member (19), the device comprises an adapter (8) that can be attached on the end of the sealing member (19),
    said adapter (8) having a wall (80) through which are arranged, on the one hand, a first through passage (81), preferably central, able to provide the communication between the fluid outlet (29) of the gun and the inlet (151) of the fluid passage (150) of the receiving nozzle (15), in the state of the gun (26) pressed against the adapter (8), and on the other hand, a second through passage (82) able to ensure the communication between the gas outlet (30) of the gun and the passage defined between the outer peripheral wall of the gas receiving chamber (185) and the fluid receiving nozzle (15), in the state of the gun (26) pressed against the adapter (8),
    and in that said wall (80) of the adapter (8) has, in the state of the adapter (8) attached on the sealing member (19), a concave surface, for example conical, with the concave side oriented on the side opposite the receiving nozzle (15).
EP13747448.2A 2012-07-31 2013-07-15 Device for cleaning a spray gun Not-in-force EP2879811B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1257414A FR2994111B1 (en) 2012-07-31 2012-07-31 CLEANING DEVICE FOR SPRAY GUN
PCT/FR2013/051686 WO2014020254A1 (en) 2012-07-31 2013-07-15 Device for cleaning a spray gun

Publications (2)

Publication Number Publication Date
EP2879811A1 EP2879811A1 (en) 2015-06-10
EP2879811B1 true EP2879811B1 (en) 2016-06-15

Family

ID=47427351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13747448.2A Not-in-force EP2879811B1 (en) 2012-07-31 2013-07-15 Device for cleaning a spray gun

Country Status (6)

Country Link
US (1) US20150190852A1 (en)
EP (1) EP2879811B1 (en)
JP (1) JP2015530232A (en)
CN (1) CN104520023A (en)
FR (1) FR2994111B1 (en)
WO (1) WO2014020254A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106345720B (en) * 2015-07-17 2019-04-30 沈阳芯源微电子设备有限公司 A kind of spraying nozzle automatic flushing device and its cleaning method
JP6553807B2 (en) * 2015-09-02 2019-07-31 ローム アンド ハース カンパニーＲｏｈｍ Ａｎｄ Ｈａａｓ Ｃｏｍｐａｎｙ Cleaning adapter and method for foam gun dispenser
DE102018209803A1 (en) 2018-06-18 2019-12-19 Continental Automotive Gmbh Device for volume-controlled portioning of cleaning fluid
IT202000002509A1 (en) * 2020-02-10 2021-08-10 Annovi Reverberi Spa HIGH PRESSURE WASHER

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745418A (en) * 1953-08-10 1956-05-15 John A Balcom Apparatus for cleaning paint spray guns and containers utilized in conjunction therewith
DE102007031555B4 (en) * 2007-07-06 2014-10-23 Bayerische Motoren Werke Aktiengesellschaft Cleaning device for a spray device
DE102007052067B4 (en) * 2007-10-30 2014-08-21 Sata Gmbh & Co. Kg Cleaning device for cleaning spray guns
FR2944221B1 (en) * 2009-04-08 2012-03-09 Fillon Technologies CLEANING DEVICE FOR SPRAY GUN

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR2994111A1 (en) 2014-02-07
EP2879811A1 (en) 2015-06-10
CN104520023A (en) 2015-04-15
FR2994111B1 (en) 2014-08-22
JP2015530232A (en) 2015-10-15
US20150190852A1 (en) 2015-07-09
WO2014020254A1 (en) 2014-02-06

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