| 摘要 |
PURPOSE:To perform surely release of a screw molded item from a screw core by radial contraction of the inner diameter of a ring elastic chuck and holding the molded item without slippage. CONSTITUTION:A rotating shaft 2 being hollow and wherein a knockout member 6 is built-in is inserted into and penetrated through a holding cylinder 1. A ring elastic chuck 14 with a required thickness is provided in the opening of the apex of a chuck cylinder 7 connected on the apex part of the rotating shaft 2. A piston 18 compressing and deforming the elastic chuck 14 is provided in the cylinder. The apex 6a of the knockout member 6 penetrating through the piston 18 is positioned on the inside of the elastic chuck 14. |
