| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection-molding die which has high production efficiency and can prevent a molded object from being stuck to and jerked by the cavity-side half during continuous molding, even in case the molded object is of a slender columnar shape, and a manufacturing method of the injection-molded object. SOLUTION: This injection-molding die is of such a type that the cavity formed between the cavity-side half and the movable half, is filled with a molding material by a hot runner valve gate system. In addition, the injection-molded die comprises a primary drive part to perform an operation to move a valve pin backward and an operation to move the valve pin forward so as to seal the cavity after the completion of a filling step, with the purpose to fill the cavity with the molding material loaded inside the hot runner, a secondary drive part to perform an advancing operation to eject a molded object with a valve pin after the completion of a molding step and a receding operation to retract the valve pin following the ejection step, and a control means to control the advancing operation and the receding operation of the secondary drive part. COPYRIGHT: (C)2009,JPO&INPIT
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