| 摘要 |
PURPOSE:To mold a multicolor product of three or more colors by injection molding by a method wherein the same number as the number of colors of cores having the same shape are provided on the circumference of a circle at an equal interval and a core member is intermittently revolved and a cavity body equipped with cavities opposed to the cores is fixed to inject resins having mutually different colors from the injection ports of the respective cavities. CONSTITUTION:For example, when a three-color product is molded, cores 2a-2c are provided on the surface of a core body 1 in a protruding state so as to be arranged on the circumference of a circle at a 120 deg. angle interval from the center of revolution of the core body. The first - third cavities 11-13 opposed to the cores 2a-2c are provided to a cavity body l and injection ports 14 16 of separate color resins are provided. When the core body 1 is brought into contact with the cavity body 10, for example, the core 2a is opposed to the first cavity 11 to inject a resin from the injection port 14. Next, when the core body 1 is allowed to retreat to be revolved by 120 deg. to be again brought into contact with the cavity body 10, the core 2a is opposed to the cavity 12 to inject a separate color resin from an injection port 15. In the same way, a separate color resin is injected from an injection port 16 and a molded product is released. |
