Patent ID: 6364655
Filing Date: 2002-04-02
Classification: B29C

Abstract:
An arm structure for an injecting molding machine comprising a first arm, a second arm and a third arm, said second arm and said third arm consisting of plural pivotal plates and pivotally connected between plural fix plates of a receiving disc and a movable mold base, an oil pressure cylinder fixed in said arm structure to move said arm structure and then subsequently said movable mold base; characterized by said second arm having said two inner pivotal plates located separate from each other with a space larger than the outer diameter of said oil pressure cylinder, two joints pivotally connecting said two second arms and said two third arms separated with a space larger than an outer diameter of said oil pressure cylinder, thus said joints of said second and third arms never colliding with said oil pressure cylinder positioned between said receiving disc and said movable mold base when said arm structure operates to move back and forth.