| 摘要 |
PURPOSE: A vacuum die-casting machine for plastic with an overflow part for vacuum suction is provided to take in molten resin efficiently and rapidly by vacuum suction and to form a micro structure more easily. CONSTITUTION: A vacuum mold for plastic casting comprises an upper template(130), a cavity core(200), an overflow suction pin(220), a bottom core(300), and a lower template(140). A locate ring is installed on top of the upper template, and includes a suction path(131) which is connected to a vacuum suction unit through a nipple(170). The cavity core is coupled to the lower side of the upper template, and a runner cavity including an overflow cavity(210) is formed beneath the cavity core. The overflow suction pin inhales the gas in the overflow cavity with a vacuum suction unit. The bottom core is formed the lower side of the cavity core to form a cavity(160) for molding a product. The lower template is coupled to the lower side of the bottom core.
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