| 摘要 |
PROBLEM TO BE SOLVED: To provide a torpedo that can simply process a blade while more enhancing the plasticizing efficiency of pellets. SOLUTION: The torpedo 1 includes an almost columnar body 10 having blades 14 formed to the outer surface thereof to form a gap F with respect to the inner surface of the inside 30 of a nozzle case 2 when assembled with the inside 30 of the nozzle case 2 and the needle pin 20 that can axially advance and retreat from the tip of the body 10. When the molten resin M of the pellets P sent into the gap F exceeds predetermined pressure, the gate 42 communicating with the cavity 40 of the mold 3 assembled with the nozzle case 2 is opened by the needle pin 20. A plurality of the blades 14 are equally formed in the circumferential direction of the body 10 along the axial direction of the body 10 to become alternate in the circumferential direction of the body 10 across the midway position in the axial direction of the body 10. COPYRIGHT: (C)2012,JPO&INPIT |
