Patent ID: 9399231
Filing Date: 2016-07-26
CPC Classification: B05B

Claim Text:
1. A rotary atomizing head type coating machine comprising: a cylindrical housing whose inner peripheral side is a motor accommodating portion; a cylindrical cover covering an outer peripheral side of said housing; an air motor accommodated in said motor accommodating portion of said housing and rotating and driving a rotational shaft supported by an air bearing by a turbine; a rotary atomizing head located on the front side of said housing and mounted on a distal end portion of said rotational shaft of said air motor and spraying a paint supplied while rotating together with said rotational shaft; a feed tube provided by being inserted through said rotational shaft and supplying the paint toward said rotary atomizing head; a shaping air ring provided by surrounding an outer peripheral surface of said rotary atomizing head on the front end side of said housing and having an air ejection port for ejecting shaping air for shaping a spraying pattern of the paint sprayed from said rotary atomizing head; a bearing air passage provided on said housing and supplying bearing air toward said air bearing of said air motor; and a turbine air passage provided on said housing and supplying driving air toward said turbine of said air motor, wherein: an annular space surrounding said air motor is provided between said housing and said cover; said housing includes an bearing air branch passage that branches from said bearing air passage and connects said bearing air passage and said annular space to each other; and said housing includes a turbine air branch passage that branches from the turbine air passage and connects the turbine air passage and the annular space to each other.