Patent ID: 7704063

Claim:
A mold assembly comprising an injection mold having a molding chamber for receiving and forming a molded plastic component from a predetermined amount of flowing molding material during a molding cycle, and a channel in the mold leading to the molding chamber, a core member disposed in an rotatably and longitudinally moveable along the channel, and including a threaded molding segment adjacent one end for forming the molding material in the chamber during the molding cycle, and a drive segment having a core rotary movement member and a core linear movement member connected to the core rotary movement member, and a programmable servo motor powered drive member connected by non-hydraulic members to the core rotary movement member for simultaneously moving the core rotary movement member and the core linear movement member and positioning the molding segment adjacent the end of the core member in or out of the molding chamber without utilizing hydraulic fluids, the core member being rotated and moved longitudinally at different speed and at different torque levels by a program applied to the servo motor while the molding segment of the core member is being moved out of the molded plastic component in the molding chamber.