An electrostatic rotary sprayer for coating product including a spraying cup, a body and a drive turbine assembled in the body and configured to rotate the spraying cup about an axis of rotation defined by the body. The sprayer also includes electrodes for charging the coating product sprayed by the spraying cup, these electrodes being assembled on a ring attached on the body, and a skirt for discharging air around the cup. An annular slit, supplied by a pressurized air flow circuit with pressurized air, is defined radially between the ring and the skirt, with its outlet oriented toward the front of the sprayer.

A coating booth includes a coating chamber in which coating is performed on a coated object by a coating device, a supply air chamber placed above the coating chamber, and a recovery chamber placed below the coating chamber. The coating booth is configured such that: air directed from the supply air chamber toward the recovery chamber flows through a predetermined region inside the coating chamber, the predetermined region including a passage region for the coated object; and the air directed from the supply air chamber toward the recovery chamber does not flow through a predetermined-region outside region inside the coating chamber.

A method of lubricating metal articles (6), in particular those made of steel, comprising the application (4) of a dispersion comprising a lubricant oil and a lubricant powder to an article to be drawn. A drawing method comprising the lubrication as described above and a lubricant dispersion.

The present invention relates to a double bell cup installed on an end portion of a painting robot to centrifugally spray paint to an object to be painted, the double bell cup comprising: an outer body having a tapered structure that becomes gradually wider from the top to the bottom, wherein the outer body has an inlet passage formed on the top side thereof, a stagnation passage formed therein to communicate with the inlet passage, and a spray passage formed on the bottom side thereof to communicate with the stagnation passage, and paint is introduced through the inlet passage and retained in the stagnation passage; and an inner body having a tapered structure that becomes gradually wider from the top to the bottom.

A coating device is equipped with a rotary head, a drive unit, and an electric power supply unit. The rotary head is configured to be supplied with a coating material. The rotary head includes a diffusion surface that is configured such that the coating material is diffused toward an outer edge portion of the diffusion surface by a centrifugal force, and a plurality of groove portions that are included in the outer edge portion. The rotary head is configured to discharge a threadlike coating material from the groove portions. Also, the coating device is configured such that a diameter of the threadlike coating material is set equal to or larger than 0.03 mm and equal to or smaller than 0.1 mm and that the threadlike coating material is electrostatically atomized.

An electrostatic coating device is provided with a housing, which has a cascade housing section that houses a cascade, and a motor housing section that houses an air motor. A clearance between the cascade and the inner wall of a first housing hole forms a first air flow passage. Furthermore, an annular clearance between the air motor (specifically, an air turbine) and the inner wall of a motor chamber forms a second air flow passage. The first air flow passage and the second air flow passage are communicated with each other via, for instance, a third air flow passage that includes a first communication passage, a circular recessed section, a second communication passage, and a third communication passage.

The present disclosure provides a coating plant components and an assembly of such components for a rotary atomizer. The components may be a bell cup and/or an atomizer ring. The component includes a metal main part and a non-metal material at least partially covering or coating the main part. The coating or insert of non-metal material is positioned to provide a barrier to inhibit metal-on-metal contact between, e.g., a bell cup and an atomizer ring. The present disclosure further provides a method for applying non-metal material to a coating plant component.

An electrostatic atomizing coating apparatus and method incorporate a rotary head having a base portion, an open end and a plurality of grooves formed radially on an inner peripheral surface of the open end, an inside diameter of the rotary head increasing from the base portion toward the open end, and a motor configured to rotate the rotary head to discharge a thread-shaped paint. A voltage is applied to the rotary head so as to form an electrostatic field between the open end of the rotary head and an earthed coating target and to electrostatically atomize the thread-shaped paint discharged from the open end. Voltage output from the generator is controlled so as to adjust an intensity of the electrostatic field and to control a particle diameter of the electrostatically atomized thread-shaped paint.

A bell cup (3) of a rotary atomization-type coating device (1) is provided. This device has a rotary shaft (13) and a feed tube (15) inserted in the rotary shaft. The bell cup is fitted to a tip end part of the rotary shaft and has a coating material spreading surface (31) on an inner surface of the bell cup. The feed tube discharges a coating material to the coating material spreading surface. The coating material spreading surface includes a region extending from a predetermined position on a proximal end side to a distal end edge. The region is constituted of a convex curved surface toward an extension of the rotary shaft. The outermost surface of at least part (31B) of the coating material spreading surface is covered by a diamond-like carbon film (50) free from silicon at least on its outermost surface.

A painting system used in a painting method in which a plurality of colors of paint supplied from a paint supply device are mixed and toned with a mixing device and applied to a workpiece, the painting system comprising a storage unit that can store the paint that is mixed and toned with the mixing device, and a cleaning unit that can clean the mixing device. When applying the paint in the storage unit to the workpiece, the cleaning unit cleans the mixing device.