| 摘要 |
PURPOSE:To enable to increase the number of revolutions of a revolving shaft and improve the coating capacity of paint by supporting the revolving shaft by means of noncontact type radial bearings of specific construction and a thrust air bearing, in a rotary atomizing electrostatic coating device. CONSTITUTION:A revolving shaft 8 provided with a spraying head for injecting paint at the outside end part of the front housing 2 of a rotary atomizing electrostatic coating device is installed within said housing. In order to make paint particles finely divided and improve coating yields, the paint spraying head is revolved at an extremely high speed by the revolving shaft 8. For this purpose, the revolving shaft 8 is supported by a thrust air bearing constituted of runners 39, 40 and an annular plate 44 and a pair of tilting pad radial air bearings. Plural air flow holes 51 are pierced on the side wall surface of the annular plate 4, and air passages 50 are formed in the inside. An end part thereof is connected to the holes 51 and the other end part is connected to an air supply source. |
