| 摘要 |
PURPOSE:To simplify the movement of a die or a core metal an to accurately perform regulation thereof in the title mechanism extruding a flowable material from the gap between the die and the core metal based on whether the gap between them is made uniform or non-uniform over its entire periphery to cure the same to form a straight pipe part or a bent pipe part. CONSTITUTION:Either one of a die 21 and a core metal 22 is fixed and rings 4, 5 eccentric in the inner and outer peripheries thereof are made double to be fitted to the circular outer periphery of the moving one in a freely rotatable manner to be fitted in the circular inner peripheral part of a base member 6. By rotating either one of or both of the double rings 4, 5, the gap between the die 21 and the core metal 22 is appropriately made uniform or non-uniform over its entire periphery. |
