| 摘要 |
PURPOSE:To efficiently product a blow molded form having a high dimensional stability in a short cycle by mounting a restricting block for preventing a deformation of the form at a clamping unit, and then clamping and molding a parison extruded from a die between matched molds. CONSTITUTION:When a bumper is molded as a long molded form 22, a rear side mold 10L having restricting blocks 18a, 18b is disposed at a rear corresponding side of the bumper, and a front side mold 10R having no blocks 18a, 18b is disposed at a front corresponding side of the bumper. Blow pins 24a, 24b are so arranged in the same direction as an axis of the mold 10 in the mold 10L as to be vertically separated. Molded form interior cooling medium diffused from the pin 24a arranged at a lower part of the mold 10L cools a parison interior 26 while staying, and is then exhausted from the pin 24b arranged at an upper part of the mold 10L. |
