Abstract: The invention device measures the instantaneous rotation speed of a turbine (6) which is housed inside the body (3) of the paint sprayer (2) and which rotationally drives the rotating bowl (5) when the paint sprayer is mounted on the end of an arm (8) of a robot or an analogous multi-axis machine. A disk (10), which is disposed to the rear of the turbine (6) and which rotates therewith, cooperates with the front end (11a) of an optical-fiber-type light guide (11) which is interrupted (11b) at the rear (7) of the body (3) of the paint sprayer (2). Transmitting and receiving optoelectronic means are mounted on the end of the arm on the mounting plane (9) of the paint sprayer, opposite the rear end (11b) of the light guide (11). Said means convert a reflected optical signal which is carried by the optical guide (11) into an electronic signal which is carried by an electric cable (22) placed in the arm (8). The inventive device is suitable for use with machines on automatic painting lines for automotive vehicles.

Abstract: A generator is provided inside equipment, such as a sprayer, having a high voltage cascade including a voltage-gain transformer and a voltage multiplier arranged at the output of the transformer. The transformer is a double or multiple transformer, including at least two elementary transformers, whereof respective primary windings are mounted electrically in parallel, and whereof respective secondary windings are mounted electrically in series, the arrangement reducing a diameter of the cascade to facilitate incorporation in the sprayer or other equipment. The invention is applicable to painting robots for the automotive industry.

Abstract: The invention concerns a spraying device including a first assembly provided with a spray nozzle and a second assembly incorporating means for controlling the first assembly. The first assembly is connected to the second assembly through a wireless communication system, for example by radio. The invention is applicable to hand-held powder-coating guns and sprayers associated with a multiaxial machine.

Abstract: The invention concerns a method for regulating flow of powder in a device including an injector (2) sucking the powder (6) from a container (4) by Venturi effect, the injector (2) receiving at its intake an injection air flow (Dai), and, proximate to an outlet, a dilution air flow (Dad). Two proportional electromagnetic valves (12, 13) are arranged respectively on the injection air intake (7) and on the dilution air intake (8). Said electromagnetic valves (12, 13) are controlled by an adjusting module (11) which receives a powder flow setpoint (Dp) and which determines injection air (Dai) and dilution air (Dad) flow rates taking into account stored coefficients. (A, B) and a minimum total air flow (Dam) to be observed, based on the formula Dp/A.Dai B.Dad. The invention is useful for feeding a spraying appliance (10) with paint or any other powder coating product.

Abstract: The invention device measures the instantaneous rotation speed of a turbine (6) which is housed inside the body (3) of the paint sprayer (2) and which rotationally drives the rotating bowl (5) when the paint sprayer is mounted on the end of an arm (8) of a robot or an analogous multi-axis machine. A disk (10) which is disposed to the rear of the turbine (6) and which rotates therewith, cooperates with the front end (11a) of an optical-fiber-type light guide (11) which is interrupted (11b) at the rear (7) of the body (3) of the paint sprayer (2). Transmitting and receiving optoelectronic means are mounted on the end of the arm on the mounting pane (9) of the paint sprayer, opposite the rear end (11b) of the light guide (11). Said means covert a reflected optical signal which is carried by the optical guide (11) into an electronic signal which is carried by an electric cable (22) placed in the arm (8). The inventive device is suitable for use with machines on automatic painting lines for automotive vehicles.

Abstract: The invention concerns a generator, housed inside the equipment, such as a sprayer, a high voltage cascade including a voltage-gain transformer (2) and a voltage multiplier (3) arranged at the output of the transformer (2). Said transformer (2) is a double or multiple transformer, consisting of at least two elementary transformers (2A, 2B), whereof the respective primary windings (8A, 8B) are mounted electrically in parallel, and whereof the respective secondary windings (9A, 9B) are mounted electrically in series, said arrangement enabling to reduce the diameter of the cascade, to facilitate its incorporation in the sprayer or other equipment. The invention is applicable to painting robots for the automotive industry.

Abstract: The invention concerns a spraying device comprising a first assembly (2) provided with a spray nozzle and a second assembly (4) incorporating means for controlling the first assembly. The first assembly (2) is connected to the second assembly through a wireless communication system, for example by radio. The invention is applicable to hand-held powder-coating guns and sprayers associated with a multiaxial machine.

Abstract: A method and device for monitoring the production of a high voltage for use in electrostatic application of a coating product, the high voltage being produced by a generator and the monitoring being performed by a circuit for measuring an electrical parameter associated with the high voltage, together with verifying operation of the circuit immediately following start-ups of the generator.

Abstract: A method and device for monitoring operation of a high voltage generator which converts an input voltage into an output voltage which is higher than the input voltage, by measuring at least one first physical quantity which is representative of the input voltage; deriving at least one parameter from the at least one measured first physical quantity; comparing the at least one parameter with a second measured physical quantity which is representative of the magnitude of the output voltage; and producing a response when a predetermined minimum differential exists between the at least one parameter and the second measured physical quantity.

Abstract: A method and apparatus for generating a high voltage by converting input power at a low voltage to output power at a high voltage, by: supplying input power to a low voltage unit to produce a periodic signal having a frequency; supplying the periodic signal to a rectifier voltage multiplier of a specific type to cause the rectifier voltage multiplier to produce the output power at a high voltage, wherein the ratio of output power to input power is a function of the frequency of the periodic signal; identifying the type of the rectifier voltage multiplier; and continually adjusting the frequency of the periodic signal toward a value which maximizes the ratio of output power to input power.