| 摘要 |
PURPOSE:To conduct the cleaning work of mask easily in a short time by removing the spray metal powder adhering to the inner fringes of a plurality of circular openings made through the mask simultaneously using a plurality of rotary cutters CONSTITUTION:Five rotary cutters 11 are disposed above the casing 10 at such positions as corresponding to masks 1a, 1b mounted on supporting boards 2a, 2b. The rotary cutter is formed into a truncated cone having the longest diameter substantially equal to or slightly longer than that of an opening made in the mask 1. Driving means for the rotary cutter 11 is also housed in the casing 10. The rotary cutter 11 is brought into tight contact, through appropriate resiliency, with the inner peripheral surface at the opening of the mask 1a, 1b. The rotary cutter 11 is then rotated thus removing metal powder adhering firmly to the masks 1a, 1b easily. |
