Mechanism for moving a screw rod relative to molds for manufacturing products having holds

    公开(公告)号:US06659760B2

    公开(公告)日:2003-12-09

    申请号:US09925928

    申请日:2001-08-10

    IPC分类号: B29C4517

    摘要: A plastic injection molding machine includes a rod having an end engaged with a slide member located beside the lower mold, and a position block connected to the upper mold. A pin is movably inserted in two respective inclined holes in the position block and the slide member so that the threaded section on the tip end of the rod is moved into the cavity with the movement of the slide member. The rod is located between two side members each have a threaded semi-circular recess. Another threaded section has the same threads of the thread section on the tip end of the rod is engaged with the two threaded semi-circular recesses so that the rod is rotatably withdrawn from the cavity smoothly when the rod is rotated by a motor.