Injection molding apparatus

摘要

The present invention relates to a retractable pin assembly for an injection mold. One end of the retractable pin is inside the mold, while the other end extends outside of the mold cavity. The inside end of the retractable pin may by shaped to conform with the shape and texture of the mold cavity wall. The retractable pins are moved in and out of the mold cavity by cams that rotate around the injection mold.