| 摘要 |
PURPOSE:To obtain a beautiful painted surface with pulverized spray paint by improving a supporting mechanism for a revolving shaft provided with a paint ejection part, etc. thereby obtaining high revolutions in a titled device used for painting the bodies of automobiles, etc. CONSTITUTION:A revolving shaft 8 which is built in a rotary atomization electrostatic device 1 and is in contact with an electrode 66 for application of negative load to paint at all times is supported by noncontact type radial bearings 22, 23 and a thrust air bearing. This thrust bearing is constituted of an annular plate 44, and a pair of runners 39, 40 fixed to the shaft 8 by leaving a slight clearance to the plate 4 4. Both side faces of the plate 44 have an inner area opposing to the runners 39, 40 and a peripheral area locating outward in the radial direction than the runners 39, 40. A compressed air outflow port 51 is formed on both side faces of the plate 44 within this inner area, and a pressure balance hole 52 mutually connecting the peripheral area of both side faces of the plate 44 is formed within the plate 44. Since the shaft 8 is revolved at high speeds by using the supporting mechanism, etc. constituted in this way, the surface is finished to a beautiful painted surface with pulverized paint. |
