| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for injection molding capable of effectively heating the inner surface of a cavity in the case of injection charging a resin in the cavity, suppressing occurrence of a weld line on a resin product, and improving the molding efficiency of the product. SOLUTION: The method for injection molding comprises the steps of injection charging the resin in the cavity 14 between a fixed mold 11 and a movable mold 12, and molding the resin product. In this case, the method further comprises the step of always heating the inner surface of the cavity 14 between both the molds by a heater 20 provided at least at one of the mold 11 and the mold 12. The method also comprises the steps of supplying a cooling liquid to a cooling fluid passage 24 formed at either the mold 11 or the mold 12 in the case of taking out the product molded in the cavity 14, then supplying the fluid and cooling the inner surface of the cavity 14.
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