| 摘要 |
PROBLEM TO BE SOLVED: To materialize high-efficiency, low-cost production when different kinds of injection-molded articles are molded. SOLUTION: In an injection molding mold 10 having a pair of mold members 20 and 30 forming cavities C1 and C2 by being contacted with each other and a sprue bush 40 having a sprue 41 which is held by the mold members 20 and 30 and connected to the cavities C1 and C2, the sprue bush 40 is approximately cylindrical with the axis O direction as the mold opening/closing direction, is held rotatably around the axis O in relation to one of the mold members, and has connection runners 41a connecting the sprue 41 with either of the cavities corresponding to the rotational position, and a ball plunger 53 for holding the sprue bush 40 at a prescribed rotational position, a ball receiving recess 42b (rotation holding mechanism), and a recess (operation mechanism) for rotating the sprue bush from the mold opening/closing surface X side are provided. COPYRIGHT: (C)2004,JPO&NCIPI
|
