| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle for an injection machine which enables the conditions of injection to be effectively controlled within a short time and the product failure to be reduced and the product of good quality to be mass-produced, and an injection molding method. SOLUTION: The nozzle for the injection molding machine is provided with a heating unit 5 of an independent electrical heating unit different from a heater 4 which is installed around a gate tip 8 having a nozzle gate 7 contacting a cavity 10 of a die and a cooling unit 6 which is mounted in parallel with the heating unit 5 and enables a coolant to be passed through. The method comprises a step of operating the heater mounted on the nozzle body and heating the nozzle, a step of operating the heating unit 5 mounted on the gate tip 8 and heating the gate tip 8, a step of injecting, a step of stopping the heating unit 5 after the completion of injecting and cooling the gate tip 8 and a step of operating the cooling unit 6 mounted on the gate tip 8 and cooling the gate tip 8. COPYRIGHT: (C)2004,JPO
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