EP2650051B1 - Insert à clavette pour rallonge de tuyau de poudre d'un pistolet de pulvérisation de poudre fonctionnant sous haute tension et rallonge de tuyau de poudre avec insert à clavette - Google Patents

Insert à clavette pour rallonge de tuyau de poudre d'un pistolet de pulvérisation de poudre fonctionnant sous haute tension et rallonge de tuyau de poudre avec insert à clavette Download PDF

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Publication number
EP2650051B1
EP2650051B1 EP12405035.2A EP12405035A EP2650051B1 EP 2650051 B1 EP2650051 B1 EP 2650051B1 EP 12405035 A EP12405035 A EP 12405035A EP 2650051 B1 EP2650051 B1 EP 2650051B1
Authority
EP
European Patent Office
Prior art keywords
powder
tube
powder tube
tube extension
wedge insert
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
EP12405035.2A
Other languages
German (de)
English (en)
Other versions
EP2650051A1 (fr
Inventor
Pierre Plascar
Thomas Schwarz
Raphael Graf
Thomas Nauer
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.)
Wagner International AG
Original Assignee
Wagner International AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wagner International AG filed Critical Wagner International AG
Priority to EP12405035.2A priority Critical patent/EP2650051B1/fr
Priority to US13/858,144 priority patent/US20130264395A1/en
Publication of EP2650051A1 publication Critical patent/EP2650051A1/fr
Application granted granted Critical
Publication of EP2650051B1 publication Critical patent/EP2650051B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/044—Slits, i.e. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0418—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces designed for spraying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power

Definitions

  • the invention relates to a wedge insert for a powder tube extension of a powder spray gun which can be operated with high voltage and a powder tube extension with wedge insert for a high-voltage powder spray gun.
  • the workpiece to be coated is coated with a powder spray gun with a layer of electrostatically charged powder in a first operation.
  • the powder coated workpiece is heated until the powder on the surface of the workpiece melts and forms a closed layer. After cooling the workpiece, this layer is a closed, firmly adhering to the workpiece protective layer.
  • an electrode holder with a high-voltage electrode is located in the powder channel of the powder spray gun. The powder flows past the electrode and is thereby charged electrostatically.
  • the voltage applied to the electrode high voltage is usually between 20 kV and 100 kV.
  • a conventional powder spray gun is equipped with a powder tube extension.
  • the spray gun, the electrode holder and the union nut, which fixes the spray nozzle and the electrode holder on the gun are first removed at the powder spray gun and then screwed the powder tube extension on the gun. Now you can bring the gun deeper into the workpiece and it is better to approach this otherwise inaccessible areas of the workpiece.
  • FIGS. 1a and 1b shown embodiment of a powder tube extension forms an already known prior art.
  • the centering of the tube 900 which includes the resistors 110 for the electrode 800, via three star-shaped arranged centering pins 300.
  • the centering pins 300 are inserted radially from the outside through the powder tube 200.
  • the nozzle 100 is slid over the gun base and pins 300 and threaded onto the designated thread on the gun base.
  • the pins 300 themselves are fixed and they fix the tube 900 in which the resistors 110 and the electrode 800 are located.
  • This type of centering is complex.
  • the centering pins 300 are relatively small components that can be lost by carelessness.
  • centering pins 300 protrude into the powder tube 200 and the coating powder flows past them.
  • the wear, especially with abrasive powder is not insignificant.
  • the centering pins 300 influence the powder flow, so that it is swirled and no longer flows uniformly out of the nozzle 100.
  • a spray device with a nozzle in which a support structure is present on the upstream side of the nozzle.
  • the support structure has on the upstream side on a cylindrical portion in which a sleeve is inserted, are arranged in the high-voltage-carrying components.
  • the support structure has two radial webs which divide the powder flow path into two arcuate powder flow paths.
  • the powder spray gun for automatic operation known.
  • the powder spray gun has a tubular insert in the powder channel with a web arranged therein for holding a high-voltage electrode.
  • the bridge is wedge-shaped on its upstream side.
  • the electrical contact for supplying the high voltage electrode is located on the outer surface of the tubular insert. An extension of the powder channel on the downstream side of the spray gun is not provided.
  • an electrode holder for a powder spray device has a web arranged in the powder channel for holding an electrode.
  • the upstream portion of the powder channel is formed as a sleeve for receiving a powder tube.
  • An object of the invention is to provide a powder tube extension with wedge insert for a high-voltage operated powder spray gun, wherein the powder flow through the wedge insert is not or only minimally affected.
  • the use of the wedge insert in the powder tube extension means that the entire powder tube extension no longer adversely affects the powder jet.
  • a powder spray gun which is operated with such a fitted powder tube extension, produces the same or approximately the same powder jet as when it is operated without the powder tube extension.
  • the wedge insert has a nose which is designed such that, when the wedge insert is inserted in the spray nozzle, which has a groove, it forms a positive connection with the groove.
  • inventive powder tube extension of the channel of the wedge insert is sleeve-shaped and arranged concentrically to the sleeve.
  • the sleeve of the wedge insert is designed such that it can be inserted into the powder tube of the powder tube extension and forms a frictional connection with the powder tube.
  • the sleeve of the wedge insert tapers in the upstream end region.
  • a cap is provided which is connected to the guide tube by means of a detachable connection. If the cap or the electrode needle is worn in the cap, the cap with the electrode needle can be easily removed and replaced with a new cap. No service personnel are required for this.
  • a groove is provided in the spray nozzle, which is formed so that it forms a positive connection with the nose of the wedge insert. This ensures that the spray nozzle always has the same orientation as the wedge insert. This in turn ensures that the quality of the powder spray is consistently high.
  • the powder tube extension can be provided between the spray nozzle and the powder tube, a snap connection. This ensures that the spray nozzle is fixed on the powder tube and can be removed without tools if necessary.
  • the latching connection can be made possible in the powder tube extension in that the spray nozzle has an O-ring and the powder tube has a groove. This is a simple and inexpensive solution.
  • the spray nozzle has a sleeve-shaped section which can be plugged onto the powder channel. This prolongs the path between the powder channel and the end of the spray nozzle.
  • This constructive measure fulfills various national and international standards. These standards require that the powder spray gun should not pose an explosion hazard. It is inflammable partial discharges (discharges in the ionized air) and / or ignitable flashovers (discharges to a significantly low potential or mass) to prevent. Partial discharges and flashovers may occur if the distance falls below a distance dependent on the magnitude of the high voltage and the occurring field strength.
  • a baffle plate is provided, which can be plugged onto the guide tube.
  • a conical powder spray can be generated.
  • a flat jet nozzle for a powder tube extension of a high-voltage operated powder spray gun in which a nozzle slot and a tubular portion are provided.
  • the tubular portion is formed such that at least the downstream portion of a radially disposed wedge of a wedge insert can be positively placed therein is.
  • a groove is provided which is formed so that when the wedge insert is connected to the flat jet nozzle forms a positive connection with the nose of the wedge insert, so that the wedge and the nozzle slot have the same orientation.
  • a shoulder is provided between the tubular portion and the further tubular portion.
  • the powder tube extension described above can be used in a manually operable powder spray gun, an automatic spray gun or a powder cup gun.
  • the powder tube extension comprises an extension tube 3, which is also referred to below as a powder tube.
  • a connection sleeve 5 On the upstream end 3.5 of the extension tube 3 is a connection sleeve 5.
  • the electrode holder 6 has on its upstream side on a powder channel 6.3, which forms the inlet of the powder tube extension.
  • the coating powder or powder for short flows in the direction of the arrow P through the powder channel 6.3 and is divided by the wedge 7, so that it flows without appreciable turbulence on the web 6.2 of the electrode holder 6 into the powder tube 3.
  • a tubular section 6.4 At the downstream end of the web 6.2.
  • the electrode holder 6 serves to guide the high voltage from the contact point at the downstream end of the spray gun 30 to the resistors 11 in the tube 16.
  • the tube 16 is also referred to below as a guide tube.
  • the electrode holder 6 has for this purpose an electrically conductive contact ring 14 which is in contact with the contact point of the spray gun 30 as soon as the powder tube extension is screwed onto the gun 30.
  • in the Inside the electrode holder 6 there is an electrode channel 6.1 with a wire whose end is in contact with the contact ring 14. The other end of the wire is connected to the first of the series resistors 11.
  • the connection 16.2 between the tubular portion 6.4 and the tube 16 may be formed for example as a press fit, screw or gluing.
  • the tube 16 and the extension tube 3 are arranged concentrically with each other.
  • a cap 9 At the downstream end of the tube 16 is a cap 9.
  • the cap 9 is screwed to the tube 16. It has a thread 9.1 (see FIG. 8 ). But the cap 9 can also be pressed into the tube 16 or glued to it.
  • the cap 9 has an opening from which a high voltage electrode 8 or shortly electrode protrudes. When the spray gun is in operation, the powder flowing past the high voltage electrode 8 will become electrostatically charged.
  • the cap 9 is advantageously removable from the tube 16. If the electrode is worn, it is sufficient to replace only the cap 9 with the electrode 8.
  • the tube 16 with the resistors 11 need not be replaced.
  • the thus formed cap 9 carries at the upstream end a spring 15 which is electrically connected to the electrode 8.
  • the spring 15 thus forms an electrically resilient contact which presses on a contact plate 17 on the last resistor 11 in the tube 16.
  • the tube 16 located inside the powder tube 3 with the series-connected resistors 11 and the cap 9 is held exactly concentric with the powder tube 3 by means of a wedge insert 2.
  • the wedge insert 2 has for this purpose a sleeve-shaped section 2.7, which is inserted in the downstream end region of the powder tube 3.
  • This sleeve-shaped section 2.7 is also referred to below as an outer sleeve-shaped section 2.7.
  • the outer sleeve-shaped portion 2.7 has a taper on the outside at its upstream end. As a result, the wedge insert 2 can be more easily inserted into the powder tube 3.
  • the wedge insert 2 has a further sleeve-shaped section 2.8, which is also referred to below as the inner sleeve-shaped section 2.8.
  • the outer sleeve-shaped portion 2.7 and the inner sleeve-shaped portion 2.8 are arranged concentrically with each other and connected to each other via two radial webs 2.4.
  • the two webs 2.4 each have a taper on the upstream side 2.2 and are thus wedge-shaped. Through the coating powder is passed by the two webs 2.4, without causing turbulence. The risk that the coating powder adheres or sinters on the webs 2.4 is thus significantly reduced.
  • the wear of the wedge insert 2 is reduced by a suitable geometry of the tapers 2.2. Otherwise, the webs 2.4 would be removed in the course of time, in particular by abrasive coating powder.
  • the two webs 2.4 advantageously also have tapers 2.1 on the downstream side. They reduce the risk that the coating powder is swirled behind the webs 2.4.
  • a Pulverstrahldüse 1 is provided, which is also referred to below as a jet nozzle or nozzle.
  • the nozzle has a downstream portion 1.4 and an upstream portion 1.8.
  • Paragraph 1.7 forms the boundary between the two sections 1.4 and 1.8.
  • the paragraph 1.7 also forms a depth stop.
  • the nozzle 1 is placed on the downstream end of the powder tube 3 and at the same time on the wedge insert 2.
  • the nozzle 1 has reached its end position when the depth stop 1.7 of the nozzle 1 strikes the annular shoulder of the wedge insert 2.
  • a latching connection ensures that the nozzle 1 does not slip off the powder tube 3 during the coating process.
  • the nozzle 1 has for this purpose an O-ring 10, which can engage in a corresponding annular groove on the powder tube 3.
  • the powder tube 3 and the wedge insert 2 are shaped so that they form a frictional engagement in the mounted state. So if you subtract the nozzle 1 from the powder tube 3, the frictional engagement ensures that the wedge insert 2 remains in the powder tube 3. If necessary, the operator can retrieve the wedge insert 2 by hand later from the powder tube 3. This makes the replacement of the nozzle 1 easier. It is necessary to remove only the nozzle to replace the nozzle 1. Another handle is not required.
  • the jet nozzle 1 is designed as a flat jet nozzle.
  • the nozzle opening 1.1 is slot-shaped.
  • the electrostatically charged coating powder flows through the powder channel 1.3 of Flat jet nozzle and exits through the slot-shaped nozzle opening 1.1 as a flat powder jet from the nozzle 1.
  • the two radial webs 2.4 of the wedge insert 2 and the slot-shaped nozzle opening 1.1 of the flat-jet nozzle 1 are preferably oriented the same.
  • the nozzle slot 1.1 and the two radial webs 2.4 are thus aligned parallel to each other.
  • the nozzle 1 has an axial groove 1.6 (FIG. FIG. 3 ) and the wedge insert 2 on its outside a nose 2.5.
  • the nose 2.5 of the wedge insert 2 forms a positive connection with the groove 1.6 of the nozzle 1, so that when the nozzle 1 is rotated about its longitudinal axis LA, the wedge insert 2 is also rotated. In this way, the relative position of the wedge insert 2 with respect to the nozzle 1 is maintained, regardless of the orientation of the nozzle first
  • the downstream end of the powder tube 3 is approximately 28 mm deep in the sleeve-shaped section 1.8 of the nozzle 1.
  • the outer sleeve-shaped section 2.7 of the wedge insert also projects relatively far into the powder tube 3.
  • the sleeve-shaped portion 2.7, the powder tube 3 and the sleeve-shaped portion 1.8 of the nozzle 1 form a labyrinth for the high voltage.
  • the distance or air gap is extended.
  • Another advantage over the in FIG. 1 As shown in the prior art is that the powder tube 3 now has fewer openings to the outside, it accounts for the three holes that receive the centering pins 300. Also, the distance or air gap is further increased outwards.
  • the union nut 4 has inside a shoulder 5.3, which serves as a stop for the connection sleeve 5.
  • the shoulder 5.3 presses on the connection sleeve 5 and fixes them.
  • the powder channel 6.3 of the electrode holder 6 is pressed into the powder tube of the spray gun via the stop on the collar 5.3.
  • the O-ring 12 on the powder tube 3 forms an elastic resistance for the union nut 4.
  • the union nut 4 can be pushed together with the O-ring 12 together with the nut on the tube if necessary with little effort.
  • the O-ring 12 holds the union nut 4 in the respective position.
  • FIG. 3 a second possible embodiment of the inventive powder tube extension is shown in longitudinal section.
  • the second embodiment is according to the first embodiment according to FIG. 1 shown rotated by 90 °.
  • the second embodiment of the powder tube extension differs from the first embodiment by a longer powder tube 3 'and by a longer tube 16'.
  • some additional series-connected resistors 11 are arranged in the tube 16 '.
  • the powder tube 3 according FIG. 2 for example, has a length of 120mm and the powder tube 3 'according to FIG. 3 a length of 270 mm.
  • the other components, such as the flat jet nozzle 1, the wedge insert 2, the union nut 4 and the electrode holder 6 are the same as in the first embodiment FIG. 2 ,
  • the powder tube extension according to FIG. 3 is compressed, so that the individual components are better recognizable.
  • the gun can be extended with the various powder tube extensions, for example, between 150 mm and 500 mm.
  • the wedge insert 2 remains in the powder tube 3 as in FIG. 6 shown.
  • the cap 9, in which the high voltage electrode 8 is located unscrew from the pipe 16 and replace if necessary.
  • FIG. 9 the powder tube extension is shown in a three-dimensional view, wherein the union nut and the O-ring 12 are displaced towards the nozzle 1, so that now the electrode holder 6 is accessible.
  • the gun 30 is a high voltage generator comprising a transformer and a high voltage cascade connected downstream, and transforms the high frequency low voltage into a high voltage.
  • Control and information signals from an in the control unit are guided to the gun and it can also control and information signals from the gun are directed to the control unit.
  • the coating powder or briefly powder is sprayed via the spray nozzle 1.
  • the powder flowing past the electrode 8 is charged electrostatically.
  • FIG. 11 shows a further embodiment of the powder tube extension with a baffle plate 18 and an omnidirectional nozzle 19 in a three-dimensional view.
  • the staff first pulls the baffle plate 18 from the guide tube 16. Subsequently, the staff, as in FIG. 13 is shown, also extract the round jet nozzle 19 from the powder tube 3.
  • the round jet nozzle 19 also includes the wedge insert.
  • FIG. 14 shows the round jet nozzle 19 in the view from the front and
  • FIG. 15 shows the round jet nozzle 19 in longitudinal section.
  • the round jet nozzle 19 has an upstream sleeve-shaped section 19. 2, which can be inserted into the powder tube 3.
  • the sleeve-shaped section 19.2 is also referred to below as the outer sleeve-shaped section 19.2.
  • the elevations 19.1 help to better grip the nozzle 19.
  • Inside the round jet nozzle 19 is the wedge insert with a sleeve-shaped portion 19.8, which is also referred to as an inner sleeve-shaped portion.
  • the wedge insert also includes three webs 19.4, located on the outside support sleeve-shaped portion 19.2 and hold the inner sleeve-shaped portion 19.8.
  • the inner sleeve-shaped portion 19.8 is provided to receive the guide tube 16 with the cap 9.
  • the webs 19.4 can, as in FIG. 15 is shown, each having a wedge-shaped taper on the upstream and the downstream side.
  • the powder flowing through the powder channel 19.3 of the nozzle 19 is divided by the wedge-shaped webs 19.4 and flows without appreciable turbulence to the nozzle outlet.
  • FIG. 16 shows a part of the powder tube extension in a three-dimensional view, wherein the union nut 4 and the O-ring 12 are displaced on the powder tube 3 in the direction of the powder outlet.
  • FIG. 17 shows the tube 16 with the cap 9 for the high voltage electrode 8 and the electrode holder 6 of the powder tube extension in a three-dimensional view.
  • the powder tube extension can be designed to have different lengths.
  • the length of the powder tube extension should, for example, result from the workpieces to be coated.
  • the powder tube extension can also be mounted on an automatic gun.
  • an automatic gun is understood to be a spray gun that is not held by hand, but for example, attached to a robot or a linear guide or fixed installed.
  • the powder tube extension can also be screwed onto a powder cup gun.
  • the powder cup gun has a powder cup including powder injector, which are attached directly, for example, above the spray gun.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)

Claims (13)

  1. Rallonge de tube de poudre pour un pistolet de pulvérisation de poudre utilisable sous haute tension,
    - sur laquelle est prévu un tube de guidage central (16) qui guide une électrode (8) pour la haute tension et dans lequel sont disposées des résistances (11),
    - sur laquelle une insertion de clavette (2) est prévue,
    - - sur laquelle un manchon (2.7) est prévu,
    - - sur laquelle une entretoise radiale (2.4) qui est constituée en forme de clavette sur le côté amont (2.2) est prévue dans le manchon (2.7) et
    - - sur laquelle un conduit s'étendant axialement (2.6) dans lequel le tube de guidage (16) peut être emboîté, est prévu dans l'entretoise (2.4),
    - sur laquelle un tube de poudre (3) disposé concentriquement par rapport au tube de guidage (16) est prévu et
    - sur laquelle l'insertion de clavette (2) et une buse de pulvérisation (1) sont prévues à l'extrémité en aval du tube de poudre (3).
  2. Rallonge de tube de poudre selon la revendication 1,
    - sur laquelle la buse de pulvérisation (1) présente une rainure (1.6) et
    - sur laquelle l'insertion de clavette (2) présente un ergot (2.5) qui est constitué de manière à former avec la rainure (1.6) une complémentarité de forme quand l'insertion de clavette (2) est emboîtée dans la buse de pulvérisation (1).
  3. Rallonge de tube de poudre selon l'une des revendications précédentes,
    sur laquelle le conduit (2.6) est constitué en forme de manchon et disposé concentriquement par rapport au manchon (2.7).
  4. Rallonge de tube de poudre selon l'une des revendications précédentes,
    sur laquelle le manchon (2.7) est constitué de manière à pouvoir être emboîté dans le tube de poudre (3) tout en formant une liaison par friction avec le tube de poudre (3).
  5. Rallonge de tube de poudre selon la revendication 4, sur laquelle le manchon (2.7) se resserre dans la zone d'extrémité en amont.
  6. Rallonge de tube de poudre selon la revendication 1, sur laquelle est prévu un chapeau (9) qui est relié au tube de guidage (16) au moyen d'une liaison amovible.
  7. Rallonge de tube de poudre selon l'une des revendications précédentes 1 à 6,
    sur laquelle une liaison par encliquetage est prévue entre la buse de pulvérisation (1) et le tube de poudre (3).
  8. Rallonge de tube de poudre selon la revendication 7, sur laquelle la buse de pulvérisation (1) présente un joint rond (10) et le tube de poudre (3) présente une rainure pour la liaison par encliquetage.
  9. Rallonge de tube de poudre selon l'une des revendications précédentes 1 à 8,
    sur laquelle la buse de pulvérisation (1) présente une section en forme de manchon (1.8) qui peut être embrochée sur le tube de poudre (3).
  10. Rallonge de tube de poudre selon l'une des revendications précédentes 1 à 9,
    sur laquelle une plaque de rebondissement (18) qui peut être embrochée sur le tube de guidage (16), est prévue.
  11. Buse à jet plat pour une rallonge de tube de poudre d'un pistolet de pulvérisation de poudre utilisable sous haute tension,
    - sur laquelle une fente de buse (1.1) est prévue,
    - sur laquelle est prévue une section tubulaire (1.4) qui est constituée de manière à ce qu'au moins la section en aval d'une clavette (2.4) disposée radialement d'une insertion de clavette (2) puisse être placée à l'intérieur par complémentarité de forme,
    - sur laquelle est prévue dans une autre section tubulaire (1.8) une rainure (1.6) qui est constituée de manière à former, quand l'insertion de clavette (2) est reliée à la buse à jet plat (1), une complémentarité de forme avec l'ergot (2.5) de l'insertion de clavette (2) de telle sorte que la clavette (2.4) et la fente de buse (1.1) présentent la même orientation,
    - sur laquelle un décrochement (1.7) est prévu entre la section tubulaire (1.4) et l'autre section tubulaire (1.8).
  12. Buse à jet plat selon la revendication 11,
    sur laquelle l'autre section tubulaire (1.8) est constituée de manière à pouvoir être embrochée au moins à 25 mm sur le tube de poudre (3).
  13. Utilisation de la rallonge de tube de poudre selon l'une des revendications précédentes dans un pistolet de pulvérisation de poudre utilisable manuellement ou dans un pistolet de pulvérisation automatique.
EP12405035.2A 2012-04-10 2012-04-10 Insert à clavette pour rallonge de tuyau de poudre d'un pistolet de pulvérisation de poudre fonctionnant sous haute tension et rallonge de tuyau de poudre avec insert à clavette Not-in-force EP2650051B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12405035.2A EP2650051B1 (fr) 2012-04-10 2012-04-10 Insert à clavette pour rallonge de tuyau de poudre d'un pistolet de pulvérisation de poudre fonctionnant sous haute tension et rallonge de tuyau de poudre avec insert à clavette
US13/858,144 US20130264395A1 (en) 2012-04-10 2013-04-08 Wedge insert for a powder tube extension of a powder spray gun operable at high voltage, and powder tube extension with wedge insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12405035.2A EP2650051B1 (fr) 2012-04-10 2012-04-10 Insert à clavette pour rallonge de tuyau de poudre d'un pistolet de pulvérisation de poudre fonctionnant sous haute tension et rallonge de tuyau de poudre avec insert à clavette

Publications (2)

Publication Number Publication Date
EP2650051A1 EP2650051A1 (fr) 2013-10-16
EP2650051B1 true EP2650051B1 (fr) 2019-04-03

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EP12405035.2A Not-in-force EP2650051B1 (fr) 2012-04-10 2012-04-10 Insert à clavette pour rallonge de tuyau de poudre d'un pistolet de pulvérisation de poudre fonctionnant sous haute tension et rallonge de tuyau de poudre avec insert à clavette

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CN104094816B (zh) * 2014-07-29 2017-10-31 浙江普天园林建筑发展有限公司 一种移动式喷灌装置
DE102015204664A1 (de) * 2015-03-16 2016-09-22 Lechler Gmbh Flachstrahldüse und Verwendung einer Flachstrahldüse

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US20030080220A1 (en) * 1999-09-16 2003-05-01 Mather Brian D. Powder spray gun with inline angle spray nozzle
DE202005012863U1 (de) * 2005-08-12 2005-10-27 J. Wagner Ag Elektrodenhalter für eine Pulversprühvorrichtung

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EP2650051A1 (fr) 2013-10-16
US20130264395A1 (en) 2013-10-10

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