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    • 2. 发明公开
    • 중공사출성형방법과 장치 및 그 금형
    • 用于执行中空注射成型工艺和模具的方法和装置
    • KR1020020048830A
    • 2002-06-24
    • KR1020000078120
    • 2000-12-18
    • 나라엠앤디(주)
    • 김철주홍광희정대식하만영
    • B29C49/06
    • B29C45/1704B29C45/1732B29C45/1734B29C45/34B29C45/7207B29C2045/1719B29L2022/00
    • PURPOSE: A method and an apparatus for performing a hollow injection molding process and a mold for the same are provided to improve the cooling efficiency of plastic by injecting gas into a hollow portion while exhausting gas from the hollowing portion. CONSTITUTION: An injection mold(50) includes a moving mold(51) formed with a molding section(54) and a fixing mold(52). An injection nozzle(61) is provided to inject molten plastic(55) into the molding section(54) of the injection mold(50). A gas injection nozzle(62) injects nitrogen gas into molten plastic(55) so as to form a hollow section(56). Gas is supplied into the gas injection nozzle(62) through a gas supplying section(64). An exhaust pin(63) is inserted into the hollow section(56) so as to exhaust gas from the hollow section. The exhaust pin(63) is moved by an exhaust pin driving section(80). An air supplying section(70) is provided to supply air into the gas injection nozzle(62).
    • 目的:提供一种用于执行中空注射成型工艺的方法和装置及其模具,以通过在从中空部排出气体的同时将气体注入中空部分来提高塑料的冷却效率。 构成:注射模具(50)包括形成有模制部分(54)和固定模具(52)的移动模具(51)。 提供注射喷嘴(61)以将熔融塑料(55)注射到注射模具(50)的模制部分(54)中。 气体注入喷嘴(62)将氮气注入熔融塑料(55)中以形成中空部分(56)。 通过气体供给部(64)向气体喷射喷嘴(62)供给气体。 排气销(63)插入中空部分(56)中以从中空部分排出气体。 排气销(63)由排气销驱动部(80)移动。 提供空气供应部分(70)以将空气供应到气体注入喷嘴(62)中。