| 摘要 |
PROBLEM TO BE SOLVED: To easily mold a large-sized molded body in a short time without requiring large-scaled mechanical facilities by a method wherein an injection port leading to a molding space is formed to a top force, and a continuity groove is formed long radially centering the injection port by communicating with the injection port lower part, and by allowing its lower face to oppose the molding space. SOLUTION: A molding space 3 is formed in a joint of top and bottom forces 1 and 2. Its vertical width is set at a wall thickness of a molded body. Further, a groove form 4 conically projecting is formed to a longitudinal central part in an upper part of the top force 1, and an injection port 5 is formed in a central upper part of the groove form 4. Further, continuity grooves 6 and 6 of an almost triangular front face are formed left and right symmetrically long radially centering the injection port 5 left and right to the injection port 5 in an upper part of a forming space 9 under the groove form 4. Thereby, compounded resin is uniformly surely filled at a quick speed even in the molding space of a mold for molding a large-scaled complicated three-dimensional shape, and a large-scaled molded body can be molded only by the mold without requiring large-scaled mechanical facilities.
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