Patent ID: 6050499
Filing Date: 2000-04-18
Classification: B05B

Abstract:
A rotary atomizing head coating machine, including a cover of cylindrical shape, an air motor provided within said cover, a rotational shaft provided axially in and rotated by said air motor, a rotary atomizing head and a feed tube provided axially in said rotational shaft and having a fore end portion for spouting paint or solvent, said rotary atomizing head coating machine comprising:a rotary atomizing head mounted on said rotational shaft for high speed rotation and including a bell cup of bell- or cup-like shape, a hub member mounted on the inner peripheral side of said bell cup and defining a paint reservoir on and together with said bell cup for temporarily storing paint spouted through said feed tube, a plurality of paint outlet holes provided in said hub member to let paint or solvent supplied to said paint reservoir through said feed tube flow out from said paint reservoir onto fore inner peripheral surface of said bell cup, and a plurality of solvent passages provided in said bell cup to let a solvent supplied to said paint reservoir through said feed tube flow out from said paint reservoir onto outer peripheral surface of said bell cup;a plurality of assist air outlet holes provided in front end portions of said cover to spurt assist air for guiding said solvent toward the front end of said bell cup upon coming out onto outer peripheral side of said bell cup through said plurality of solvent passages; anda plurality of shaping air outlet holes provided in front end portions of said cover radially on the outer side of said plurality of assist air outlet holes.