| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that in a conventional mold device comprising a fixed mold and a movable mold, a return pin has to be fitted to the outside of a molding, the guide of a push-up plate has to be provided by using the push-up plate, and a support pin has to be provided since a spacer block is arranged in a place separated from the molding, so that the size of a large mold causes the increases of the cost of a member constituting the mold, the assembling manhour of the mold, and the space for preserving the mold. SOLUTION: In the mold device of an injection molding machine in which the molding is molded by the freely openable/closable fixed and movable molds, after the molding of the molding, both molds are opened, the molding is ejected by an ejector pin provided on the side of the movable mold, and the mold is clamped by the contact of the return pin provided on the side of the movable mold with the fixed mold, by providing an ejector-return pin having the functions of the ejector pin and the return pin, the return pin, the support pin, etc., which are arranged on the outside of the molding can be eliminated, enabling the miniaturization of the device.
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