| 摘要 |
PROBLEM TO BE SOLVED: To provide a shut-off nozzle for injection molding having a simple structure, not having a structure becoming the flow obstruction of a molten resin and capable of stabilizing the state of the molten resin. SOLUTION: A nozzle chip 207 is mounted on the cylinder head 205 of a plasticizing cylinder and a head chip 209 capable of sliding in its axial direction is loosely fitted to the outer peripheral surface of the nozzle chip 207. An injection part 227 exposed in a state that the head chip 209 slides is provided to the leading end of the nozzle chip 207 and an injection port 225, which is exposed in a state that the injection part 227 is exposed from the head chip 209, is formed to the leading end of the injection part 227. COPYRIGHT: (C)2005,JPO&NCIPI
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