| 摘要 |
PCT No. PCT/JP93/01903 Sec. 371 Date Aug. 26, 1994 Sec. 102(e) Date Aug. 26, 1994 PCT Filed Dec. 27, 1993 PCT Pub. No. WO94/14590 PCT Pub. Date Jul. 7, 1994A method and apparatus are provided for producing insert molded articles. The involves the steps of preforming a patterned insert material clamped at end parts thereof by a clamping device into a predetermined shape corresponding to the shape of a cavity formation face of a male die or a female die of an injection molding die by a preforming device, and trimming an unnecessary portion of the preformed material by a trimming device so as not to project from the peripheral edge of the surface of a cubic molded article to be formed of molding resin. The method further involves setting the trimmed material at the cavity formation face of the male or female die of the injection molding die, clamping the male and female dies to form a cavity by the cavity formation faces, injecting molding resin into the cavity, and removing the insert molded article from the injection molding die after the molding resin is cooled and softened. During preforming, a preforming die having a projecting part corresponding in shape to the cavity formation face of the injection molding die is used, so that the patterned insert material can be preformed corresponding to the shape of the projecting part of the preforming die. Moreover, prior to the preforming of the patterned insert material, the patterned insert material is heated and softened after, before, or while being held in contact with the top face of the projecting part of the preforming die, so that the patterned insert material is preformed to trace the projecting part of the preforming die.
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