RUNNERLESS MOLD FOR PLASTIC INJECTION MOLDING, CAPABLE OF REDUCING ENTIRE CYCLE TIME BY OMITTING POST-PROCESS FOR ELIMINATING SPRUE AND RUNNER

摘要

PURPOSE: A runnerless mold for a plastic injection molding is provided to prevent a waste of resinous material by preventing formations of runner and sprue, because the resinous material is sprayed to a forming space through a leading end of jetting nozzle.;CONSTITUTION: A runnerless mold for a plastic injection molding comprises upper and lower molds(100,200), a manifold(300), and a jetting nozzle(400). The upper mold is moved up and down relatively to the lower mold. The upper mold forms a forming space(110) with the lower mold. The manifold supplies melted resinous material to the upper mold. The jetting nozzle arranged in the top mold directly sprays the resinous material supplies from the manifold to the forming space.;COPYRIGHT KIPO 2012