| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high precision resin-made optical lens or the like free from a residual stress, high in accuracy of the height and concentricity of a product, which can be made by a multi-cavity molding process. SOLUTION: A punch member 7 is inserted into a cavity 6 of an injection-molding machine to make an article 5 by a tip portion 7b of the punch member, an article-molding shape portion 11a of an ejecting/molding pin 11 sliding within the punch member and an article-molding shaping portion 2a in the mold. Simultaneously or before or after, the punch member is inserted to mate a mating edge portion 2g of the outer circumferential portion 2b of the article-molding shaping portion on the mold with the tip end portion 7g of the punch member and to separate the article from dregs 6a. The ejecting/molding pin and the punch member can be independently driven, and the punch member is connected to a rod 9a of a servo-actuator 9 for feedback control. Further the ejecting/molding pin is displaced in the same manner to compression-mold an injected and filled material within the punch member. COPYRIGHT: (C)2006,JPO&NCIPI |
