Abstract: A feed tube is provided in a rotational shaft that is rotated by a motor. The feed tube includes a connecting member that includes a paint supplying port, a tube body including a base end connected to the connecting member and a front end that extends in the rotational shaft toward a rotary atomizing head, a positioning member provided in the front end of the tube body and including a tube positioning hole, and a paint tube including a base end connected to the paint supplying port of the connecting member and a front end inserted through the tube positioning hole of the positioning member. The paint tube is formed of a tubular body in an inside of which a paint passage is formed by using a resin material having water repellency.

Abstract: A bearing air passage through which bearing air is supplied toward an air bearing of an air motor and a turbine air passage through which driving air is supplied toward a turbine are provided in a housing. An annular space surrounding the air motor is provided between the housing and a cover. A bearing air branch passage connecting the annular space and the bearing air passage to each other and a turbine air branch passage for connecting the annular space and the turbine air passage to each other are provided. The air branch passages lead a part of the compressed air to the annular space and keep the cover in a heated state.

Abstract: A shaping air ring (10) is configured of a body (11), a cover (13) and a nozzle (15). A tapered conical protrusion (17) is provided in a front end of the nozzle (15) to abut on the cover (13) in contact therewith without a clearance therebetween. Numerous inclined recessed grooves (20) are provided on a forward tapered surfaces (17C) of the conical protrusion (17) over the entire periphery. Further, a first shaping air ejecting hole (23) is formed between each of the inclined recessed grooves (20) and an inner peripheral surface (13B2) of the cover (13) to eject shaping air toward a releasing edge (9E) of a rotary atomizing head (9). Second shaping air ejecting holes (24) are provided on an inner peripheral surface (16A) of the nozzle (15) to eject shaping air along an outer peripheral surface (9C) of the rotary atomizing head (9).

Abstract: A cartridge discharges paint in a paint chamber from a feed tube by displacing a piston in a tank. A waste liquid adjusting valve located on a downstream side of a waste liquid passage on-off valve and including a throttle passage is provided in a waste liquid passage to be connected to the feed tube. This waste liquid adjusting valve is opened at the time of washing clean the paint chamber and a paint supply passage of the feed tube to widely enlarge the passage cross-sectional area of the waste liquid passage. When paint is replenished into the paint supply passage, the waste liquid adjusting valve uses the throttle passage as a flow passage to narrowly throttle the passage cross-sectional area of the waste liquid passage. The amount of discarded paint which flows out from the feed tube is thereby reduced.

Abstract: A color change valve device includes: a manifold including on an inside a paint passage, and to which connector passages are provided to radially penetrate therethrough at plural locations axially spaced from each other; a wash air valve and a wash liquid valve connected to the connector passages at a most upstream side among the respective connector passages in the manifold; paint valves connected to the connector passages in the manifold to be positioned at a downstream side of the respective valves; and a swirl flow forming member provided in the paint passage in the manifold for forming a swirl flow by the wash air and the wash liquid, wherein the swirl flow forming member is arranged across an entire length of the paint passage.

Abstract: A bearing air passage through which bearing air is supplied toward an air bearing of an air motor and a turbine air passage through which driving air is supplied toward a turbine are provided in a housing. An annular space surrounding the air motor is provided between the housing and a cover. A bearing air branch passage connecting the annular space and the bearing air passage to each other and a turbine air branch passage for connecting the annular space and the turbine air passage to each other are provided. The air branch passages lead a part of the compressed air to the annular space and keep the cover in a heated state.

Abstract: A feed tube is provided in a rotational shaft that is rotated by a motor. The feed tube includes a connecting member that includes a paint supplying port, a tube body including a base end connected to the connecting member and a front end that extends in the rotational shaft toward a rotary atomizing head, a positioning member provided in the front end of the tube body and including a tube positioning hole, and a paint tube including a base end connected to the paint supplying port of the connecting member and a front end inserted through the tube positioning hole of the positioning member. The paint tube is formed of a tubular body in an inside of which a paint passage is formed by using a resin material having water repellency.

Abstract: A color change valve device includes: a manifold including on an inside a paint passage, and to which connector passages are provided to radially penetrate therethrough at plural locations axially spaced from each other; a wash air valve and a wash liquid valve connected to the connector passages at a most upstream side among the respective connector passages in the manifold; paint valves connected to the connector passages in the manifold to be positioned at a downstream side of the respective valves; and a swirl flow forming member provided in the paint passage in the manifold for forming a swirl flow by the wash air and the wash liquid, wherein the swirl flow forming member is arranged across an entire length of the paint passage.

Abstract: A cartridge discharges paint in a paint chamber from a feed tube by displacing a piston in a tank. A waste liquid adjusting valve located on a downstream side of a waste liquid passage on-off valve and including a throttle passage is provided in a waste liquid passage to be connected to the feed tube. This waste liquid adjusting valve is opened at the time of washing clean the paint chamber and a paint supply passage of the feed tube to widely enlarge the passage cross-sectional area of the waste liquid passage. When paint is replenished into the paint supply passage, the waste liquid adjusting valve uses the throttle passage as a flow passage to narrowly throttle the passage cross-sectional area of the waste liquid passage. The amount of discarded paint which flows out from the feed tube is thereby reduced.

Abstract: A round outer periphery of a valve mount member (17) is provided at a rear end portion (3D) of a housing (3) of a main coater body (2), main component valves (22) and wash fluid valve (30) of a main component valve assembly (21) are detachably mounted along with hardener valves (35) and wash fluid valve (36) of a hardener valve assembly (34), a trigger valve (40) and a front end washing valve (43) by means of a clamping mechanism (28). Thus, the respective main component valves (22) and hardener valves (35) are located in positions in the proximity of a rotary atomizing head (5) of the main coater body (2), realizing a significant reduction in length of paint supply passages, permitting to carry out a washing operation in an efficient manner. Besides, the respective main component valves (22) and hardener valves (35) can be detachably mounted on the valve mount member (17) easily by screw members (29) of clamping mechanisms (28), permitting to perform replacement jobs efficiently.