| 摘要 |
PURPOSE:To simplify the structure and to facilitate maintenance and inspection, by sliding a turn up bladder by an annular air cylinder formed around a driving shaft. CONSTITUTION:At the free end of a main shaft 1, a boss 5 of a molding drum 4 is fixed by a space 6, a key 7, and a tightening metal 8. The annular air cylinder 17, comprising an inner tube 15 and an outer tube 16, which surround the main shaft 1, is fixed at a location slightly separated from the molding drum 4. An annular piston 18 is slidably sealed in the inside of the annular air cylinder 17. A holding member 20 of the turn up bladder 19 is slidably coupled with the outer surface of the outer tube 16. Therefore, at the outside of a tubular body 30, to which a turn up ring 38 and a bead settling ring 37 are attached, only the air cylinder 31 for sliding the tubular body 30 and a plying down finger 35 is arranged, which is sufficient enough for said processing. |
