| 摘要 |
PURPOSE:To provide a device for manufacturing a novel cylindrical molded product which is capable of unloading a molding die for a finished product easily without bending or damaging a center core die, and delivering the finished product even with an undercut part easily as well as obtaining a high-accuracy product. CONSTITUTION:A center core die 20 consists of a free-end part 21 which fits in a molding die 13 and a fixed end part 22 which is fixed when closing the die. The fixed end part 22 is connected to a movable member 28 so that the center core die 20 shuttles back and forth in a longitudinal direction. At the same time, the fixed end part 22 is connected to a rotary member 25 so that the fixed end part 22 reverts to an area outside the die. In addition, a retaining die has a part which constitutes part of the molding die when the die is closed, and also has a retaining part 41 which retains the fixed end part 22 of the center core die 20 after being combined with the part 22. |
