| 摘要 |
PURPOSE:To raise grinding/sweeping efficiency by churning casts inside a grinding/sweeping chamber without stagnancy by means of a conical rotary churner. CONSTITUTION:A conical rotary churner 3 is rotated by starting a motor 5 and churns casts in a cylindrical grinding/sweeping chamber consisting of the upper and lower grinding/sweeping cylinders 1, 2. At this time, a rotor 9 is driven to rotate by means of a motor 8 and ejects pulverized grains, supplied from a shot injection port 10 of the rotor 9, into a cylindrical grinding/sweeping chamber by means of high speed turning effort so that said grains efficiently hit and remove burs of casts in a short time. Removal of the burs of casts is expedited through contact, mutual rubbing and crumpling effects between the cylindrical grinding/ sweeping chamber internal surface and the casts due to churning action. Subsequently, the lower grinding/sweeping cylinder 2 is opened downward by means of operation of a cylinder through a crank link, shaft 21 and a link plate 4, and the casts, free of burs, are thrown onto a shoot 12 and then discharged out of a cabinet 17 with opening of a door 13. |
