Abstract: A spray nozzle for electrostatic spraying of a coating product including a needle forming a mobile shutter of a valve for controlling the spraying, which is positioned in a recess of a barrel of the nozzle. The recess defines a surface for guiding the axial translation of the needle along a longitudinal axis of the recess. The needle includes a front shaped for abutting a seat to obstruct a duct for flow of the coating product, a rear portion which interacts with means for controlling the translation of the needle and a central portion comprised between the front end and the rear portion, while a high-voltage unit included in the nozzle is capable of applying a high-voltage to the front end of the needle. A raised portion provided on the central portion of the needle, inside the recess, can increase the electric creepage distance along the central portion.

Abstract: The invention relates to an electrostatic projector (P1) comprising: an insulation body (1); a rotatably movable projection member (2); rotational driving means (7); high-voltage power supply means (26); conducting elements (2.1, 6, 22, 23); a detection device (40) for evaluating the rotation speed of the projection member (2), the detection device (40) including at least one target (41, 42) on a rotary component and a sensor (43) adapted for detecting the or each target. The projector (P1) further includes at least one insulating wall (50) that defines a housing (51) surrounding the sensor (43) for insulating the entire sensor (43) from the conducting elements (2.1, 6, 22, 23). The sensor (43) is separated from the space (V) scanned by the rotating target (41, 42) by an essentially axial detection distance (H).

Abstract: A rotary device for spraying a coating product is provided. The rotary device includes a spray member having an edge and able to form a jet of coating product, a device for driving the rotation of the spray member and a body which is fixed. The body that is fixed includes primary orifices arranged on a primary outline surrounding the axis of rotation and intended to eject a primary air jet in a primary direction and secondary orifices arranged on a secondary outline surrounding the axis of rotation and intended to eject a secondary air jet in a secondary direction. The respective orientations and positions of each primary direction and of each secondary direction cause combined jets to be formed, each resulting from the intersection between a primary air jet and a secondary air jet that are associated with one another, the region of intersection lying upstream of the edge.

Abstract: The invention relates to a rotary sprayer for spraying a coating material, comprising a fixed body, a spraying member, a device for rotating the spraying member about a rotational axis, and a flow path for supplying the spraying member with a coating material. The spraying member for the coating material includes a flow surface for receiving the coating material and an edge for spraying the coating material. The rotary sprayer further includes a device for injecting air into a region located radially inside the space defined by the flow surface and upstream from the edge, the air-injecting device being separate from the coating material supply flow path. The air-injecting device includes an air dispenser arranged in an upstream portion of the flow surface, which injects air into a central area of the surface.

Abstract: This spraying member (10) comprises at least one outer bowl (100) and one inner bowl (200), each bowl defining a spraying edge (101, 201), one inner spreading surface (102, 202) and one outer surface (103, 203). The inner bowl (200) is positioned radially on the inside of the outer bowl (100), whereas a volume (V1) defined between the inner surface (102) of the outer bowl (100) and the outer surface (203) of the inner bowl (200) has a thickness (e), corresponding to the distance between this inner surface (102) and this outer surface (203), decreasing between a first value (e1), taken at the zone for inlet of cleaning product into the volume (V1), and a second value (e2), taken at the spraying edge (101) of the outer bowl (100). The spraying member (10) comprises means (68) for the central supply of the inner spreading surfaces (102, 202).

Abstract: The invention relates to a member (10) for spraying a coating product comprising a primary surface (20) for spreading the product and at least two secondary, inner (21) and outer (22) surfaces for spreading the product that extend downstream of the primary surface (20), the primary (20) and secondary (21, 22) surfaces being coaxial (X10-X10), the downstream portions of the secondary surfaces (21, 22) defining an inner spraying edge (23) and an outer spraying edge (24). The downstream portions (21b, 22b) of the secondary surfaces (21, 22) have, relative to one another, directions (A21, A22) that are overall divergent towards the downstream direction. The inner edge (23) has a diameter substantially smaller than the diameter of the outer edge (24).

Abstract: This valve (100) comprises: a body (101); a first channel (111) for channelling the flow of a fluid; a second channel (112) for channelling the flow of a fluid; a first valving element (130) which is movable translationally in a first direction (X112), between an open position and closed position of the or each first channel (111), the body (101) forming a first seat (123) for the first valving element (130); and a second valving element (130) which is movable translationally in a second direction (X112), between an open position and a closed position of the or each second channel (112); the first direction (X112) and the second direction (X112) being parallel or coinciding with each other. The first valving element (130) defines a housing (140) for the second valving element (130). The first valving element (130) forms a second seat (136) for the second valving element (130).

Abstract: This spraygun (1) comprises a body (11) and, housed in a proximal part (11.1) of the body (11), a tank (10) extending along a main axis (X10). This spraygun also comprises atomizing means (5) in a distal part (11.2) of the body (11) comprising an atomizing member (51) designed to atomize the coating product generally in an atomizing direction (Y50). The atomizing direction (Y50) and the main axis (X10) of the tank are convergent.

Abstract: The present disclosure describes an atomizer having a body with an inner portion and an outer portion; an atomizer member; and outlet channels about the spraying axis (X1) for ejecting air so as to shape the spray of material. The atomizer also has an outlet chamber communicating with the outlet channels; and an inlet duct for feeding air to the outlet channels. The atomizer also includes at least two intermediate chambers juxtaposed and extending about the spraying axis (X1); axial intermediate channels, two juxtaposed intermediate chambers being interconnected via a set of intermediate channels distributed about the spraying axis (X1); and outlet ducts distributed about the spraying axis (X1).

Abstract: A station for reloading a sprayer is disclosed that includes a tank coupled to at least one coating material circuit by a coupler, a docking unit that is adapted to receive a sprayer; and at least one accumulator having a volume that is greater than or equal to the volume of the tank. Each accumulator is connected to at least one circuit by the coupler. The station also includes a mechanism for pressurizing the accumulator. The accumulator is connected to the docking unit which is, in turn, connected to the tank.

Abstract: The invention relates to a direct-current high-voltage generator that comprises: current unidirectional switches (74, 76); a driver unit (130) capable of controlling the switching operation from an on-state to an off-state of a switch (74) only when a switch connected in parallel is in the on-state.

Abstract: A system for continuously metering and transporting a powder comprises means (104-107) for fluidizing (F2) the powder in a closed reservoir (4), a tube (110) dipping into the fluidized powder (L4) and discharging (110B) to the outside of the reservoir (4), and means (S2, C2) for pressurizing the reservoir. The system further comprises supply means (C3) for continuously supplying pressurizing gas from the reservoir (4) to a chamber (V6) for mixing the gas with fluidized powder leaving the tube (110), said supply means (C3) being equipped with or constituting a constriction (R3) to the flow of the pressurizing gas. A hose (7) for transporting the powder mixed with the pressurizing gas is connected to the downstream end of the mixing chamber (V6).

Abstract: An installation for spraying a multi-component coating material composed of at least one robot having a moving portion carrying at least one electrostatic sprayer, the coating material having an electrically-conductive component together with at least one second component that is electrically insulating or poorly conductive. The installation further includes a main tank fitted with a unit for making a temporary connection with a circuit for dispensing the first component, and being raised to a high voltage when the connection unit not connected, and a feed circuit for continuously feeding the at least one second component. The main tank and the at least one second component feed circuit are carried by the moving portion of the robot and connected to feed the sprayer.

Abstract: This device comprises a sprayer (10) and a reservoir (9) for feeding the sprayer with fluid. The reservoir (9) defines a cylindrical housing (L9) in which there slides (F1) a piston (91) forming a moving wall (91a) for a storage volume (V9) for storing the coating fluid. The housing (L9) is defined by a jacket (92) placed in a support-forming body (95). The jacket (92) has an end wall (93) co-operating with the peripheral wall (96) of the jacket (92) and with the piston (91), to define the above-mentioned storage volume (V9). No interstice are present in which the coating fluid could accumulate, thereby making the reservoir (9) easier to clean.

Abstract: The invention relates to an electronic board that comprises: a planar projection plate (42) provided between an intake opening (70) and a discharge opening (72); and a plurality of rectilinear nozzles (86-90) extending through said plate along a projection direction, the projection direction of each nozzle defining an angle relative to a direction perpendicular to a sole (78) of the electronic component (6) to be cooled, the angle ? being comprised in a range of ?30 and +30°.

Abstract: The invention concerns a rotary nozzle combination (P) for coating product comprising an atomizing bowl (3) and a rotor (11) adapted to rotate the bowl about a geometrical axis (X-X?), and means (4, 5, 6, 7) for controlling the presence and/or proper mounting of the bowl (3) on the rotor (11). The rotor (11) is spaced apart from a non-rotating part (P1) and the control means comprise first means (4, 5) enabling a force (F3) to be applied on the bowl (3) tending to vary the thickness of an air-film of the pneumatic thrust bearing (P1), as well as second means (7, 8) for determining the air pressure in the bearing (P1). The pressure of air in the thrust bearing (P1) can be determined when the latter is normally supplied and compared with at least one reference value.

Abstract: The invention relates to a valve (1), comprising a body (2), within which a needle (3) moves, which can rest with sealing against a seat (23), fixed to the body (2). The needle (3) is magnetically coupled to an actuator body (5), across a closed and a magnetic chamber (4) provided with several magnets (52) between which magnetic bodies (53) are interspersed. The needle (3) has no magnets and is provided with ribs (36) made from a magnetic material. According to the invention, an improved magnetic coupling may be achieved, whereby the thickness and the relative separation of the ribs (36) are largely equal to the thickness (e53) and the relative separation (l52) of the magnetic bodies (53).

Abstract: The invention concerns a device comprising a sprayer (10) and a reservoir (9) feeding product to the sprayer. Said reservoir (9) defines a cylindrical housing (L9) wherein slides (F1) a piston (91) forming a mobile wall (91a) for a volume (V9) for storing coating product. Said housing (L9) is delimited by a sleeve (92) arranged in a support-forming body (95). The sleeve (92) is provided with a base (93) delimiting, with the peripheral wall (96) of the sleeve (92) and the piston (91), said storage volume (V9). There is no interstice wherein the coating product could accumulate, thereby facilitating the cleaning of the reservoir (9).

Abstract: The inventive device for electrostatically projecting a coating product comprises a spray gun provided with voltage increasing means for producing a high direct voltage for a product electrostatic charge, wherein said spray gun is provided with a controllable valve for controlling an atomizing air flow inside the spray gun in the direction to a spraying head. A pressure sensor integrated into the spray gun is used for detecting the atomizing air pressure (P) representative value downstream of the valve and for delivering a signal (S1) for controlling the power supply of the voltage increasing means. Said invention makes it possible to control the power supply of the voltage increasing means according, in particular, to the signal (S1) received from the sensor.

Abstract: The bowl according to the invention is equipped with first magnetic coupling means adapted to cooperate with second complementary magnetic coupling means fixed on a non-rotary part of a sprayer, these first and second coupling means being adapted to exert an at least partially axial effort inducing the coupling in rotation of the bowl with a corresponding drive member. The radial width of an annular or truncated surface defined by the first coupling means is greater than the total radial width of the coupling means borne by the non-rotary part.