An electrostatic coating handgun configured to spray electrically charged atomized paint onto a workpiece. The electrostatic coating handgun includes: a body portion extending in a longitudinal direction, the longitudinal direction being the same direction as a spraying direction; a grip portion to be held by an operator, the grip portion extending downward from a rear part of the body portion; a rotating head configured to emit the paint, the rotating head being rotatably supported by a front end of the body portion; an air motor configured to apply rotational power to the rotating head, the air motor being located behind the rotating head in the body portion; and a high voltage generator configured to apply a voltage to the paint to be emitted from the rotating head. The air motor is located forward of the grip portion, whereas the high voltage generator is located above the grip portion.

An electrostatic coating handgun sprays electrically charged atomized paint onto an object to be coated. The electrostatic coating handgun includes: a rotating head; a motor that applies rotational power to the rotating head; a high voltage generator that applies a voltage to the paint; a housing supporting the rotating head with a tip end of the rotating head being exposed, and housing the motor and the high voltage generator; and a grip portion to be held by an operator. When a current value discharged from the rotating head increases due to movement of the rotating head caused by an operation by the operator, a voltage control device reduces an output voltage of the high voltage generator and a motor control device reduces a rotational speed of the motor.

Various exemplary illustrations of an electrode assembly for an electrostatic atomizer, for example for a rotation atomizer, and exemplary methods of making and/or using the same, are disclosed. An exemplary electrode assembly may not include an electrode holder arrangement for holding at least one electrode creating an electrostatic field about a symmetrical axis, wherein there is dielectric material for influencing a discharge current component extending in the direction of the symmetrical axis.

A rotary atomizer for atomizing a coating material for the coating of workpieces having a housing, a turbine wheel which is arranged in the housing and can be driven in two directions of rotation, a bell cup can be set in rotation by the turbine wheel about an axis of rotation and also a device for determining a rotational speed, wherein the device comprises an optical waveguide and a disc, which is indirectly or directly connected to the bell cup or the turbine wheel for rotation therewith and has an optically detectable structure, wherein the optical waveguide is designed for recording the optically detectable structure and for passing on the recorded structure as an optical signal in the housing. The optical waveguide has a first information channel and a second information channel, which are respectively designed for passing on an optical signal independently of one another.

The disclosure relates to a coating device, in particular a rotary atomizer, for coating components, in particular motor vehicle body components, with an electrostatic coating agent charging system, so that the coating device comprises a high-voltage area and an electrically grounded area. Furthermore, the coating device comprises a sensor in the high-voltage area, in particular as a rotational speed sensor for measuring the rotational speed of the rotary atomizer, and an optical waveguide for transmitting a measurement signal of the sensor from the high-voltage area to the electrically grounded area, wherein the optical waveguide enables a potential separation between the high-voltage area and the electrically grounded area. The disclosure provides that the sensor is a magnetic sensor.

Exemplary coating methods and coating systems, e.g., for coating the component surface of a component with a coating agent by means of an atomizer in a coating system, for example to paint a body part of a motor vehicle with paint, are disclosed. An exemplary method comprises moving the atomizer over the component surface of the component to be coated, or moving the component in the spray jet, thereby applying the coating agent to the component surface by means of the atomizer. The atomizer may be operated with at least one electrical and/or kinematic operating variable comprising a certain voltage for the electrostatic charging of the coating agent and/or a certain rotational speed of a rotating spray element of the atomizer. In one example, the electrical and/or kinematic operating variable of the atomizer may be dynamically varied during the movement of the atomizer.

Various exemplary illustrations of an electrode assembly for an electrostatic atomizer, for example for a rotation atomizer, and exemplary methods of making and/or using the same, are disclosed. An exemplary electrode assembly may not include an electrode holder arrangement for holding at least one electrode creating an electrostatic field about a symmetrical axis, wherein there is dielectric material for influencing a discharge current component extending in the direction of the symmetrical axis.

Various exemplary illustrations of an electrode assembly for an electrostatic atomizer, for example for a rotation atomizer, and exemplary methods of making and/or using the same, are disclosed. An exemplary electrode assembly may include an electrode holder arrangement for holding at least one electrode creating an electrostatic field about a symmetrical axis, wherein there is a dielectric material for influencing a discharge current component extending in the direction of the symmetrical axis.