APPARATUS FOR ARRANGING AND GUIDING FIXED AND MOVABLE DISC CAVITY PLATE OF DISC INJECTION MOLD

摘要

PROBLEM TO BE SOLVED: To reduce the damage of the data transferred from a stamper plate at a time of mold opening and the abrasion of a mold to the utmost. SOLUTION: Two or more pairs of parallel grooves 21, 22 parallel to the center line of a mold and having coinciding groove surfaces and same in cross- sectional shape are provided to the common outer diameter surface at a time when a cavity is formed by a fixed disc cavity plate 19 and a movable disc cavity plate 20. Guide blocks 23 are fixed to one of pairs of parallel grooves 21, 22 and precisely fitted in the other parallel grooves. The disc cavity plate 20 of a movable mold is attached to a movable attaching plate 25 through an automatic aligning means pressing and holding the plate 20 and supporting the same in a slidable manner on the plane right-angled to the shaft of the disc cavity plate of the movable mold.