| 摘要 |
PURPOSE:To contrive to manufacture a vessel having small irregularity in thickness even in the case of a large vessel by a method in which a cylinder is arranged in a cylinder fixing hole opening at the bottom surface of a molding recessed portion in such a manner capable of projecting into or retracting from a mold freely, and a parison is sucked by a suction cup, projecting the suction cup by the cylinder and a rod in two steps. CONSTITUTION:A cylinder 4 and a rod 5 are projected into a mold 1, operating a motor 11 and the cylinder 4. A part of a parison 8 having been fed into the mold 1 is sucked by a suction cup 6. Next, the cylinder 4 and the rod 5 are retracted, and the suction by the suction cup 6 is stopped at the predetermined position in a molding recessed portion 2. Thereafter, the cylinder 4 and the rod 5 are embeded in a cylinder fixing hole. Then, the suction cup 6 blocks the opening of the cylinder fixing hole 3. Then, blowing process is started and the parison 8 is molded, pressing said parison against the inner surface of the mold 1. |
