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    • 24. 发明授权
    • Injection molding method and injection molding machine
    • 注塑成型法和注塑机
    • US08709326B2
    • 2014-04-29
    • US13158847
    • 2011-06-13
    • Ichiro Sakamoto
    • Ichiro Sakamoto
    • B29C45/34B29C45/56
    • B29C45/34B29C45/56B29C45/7653B29K2105/253
    • An injection molding machine may include a split mold where a gas discharge portion is formed at parting surfaces. Further, the cross-section of a flow passage of the gas discharge portion may be reduced at a predetermined timing after the start of the filling of a molding material. Since the cross-section of the flow passage of the gas discharge portion is reduced after a cavity space starts being filled with a molding material, it may be possible to make the amount of gas, which flows through the gas discharge portion, large until the cross-section of the flow passage of the gas discharge portion is reduced. It may be possible to prevent a foreign material from adhering to the inner peripheral surface of the gas discharge portion.
    • 注射成型机可以包括在分型面形成气体排出部的分割模具。 此外,可以在开始填充模制材料之后的预定时间减小气体排出部分的流动通道的横截面。 由于在空腔开始填充模塑材料之后气体排出部分的流动通道的横截面减小,所以可以使流过气体排出部分的气体量变大直到 气体排出部的流路的截面减小。 可以防止异物粘附到气体排出部的内周面。