| 摘要 |
An injection mold and a double injection system using the same are provided to automatically separate a sprue and a runner from a molded product by automatically cutting a side gate from the molded product. An injection mold comprises an upper mold where a liquid master batch is injected; an intermediate mold expansible from the upper mold; and a lower mold detachable from the intermediate mold. The intermediate mold has a plurality of mold cores(21) for molding an object(101), and slave gears(22) arranged in mold cores. The intermediate mold has an outer surface on which a female screw(24) is rotatable arranged. The female screw is equipped with a driving gear(25) engaged with the slave gear. The lower mold has a screw rod(31) penetrating through the female screw. The female screw rotates by the forward/rearward movement of the screw rod, slave gears engaged with the driving gear move in interlock with the rotation of the female screw, and mold cores rotate to cut a side gate(14) from a side surface of the object.
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