| 摘要 |
A system is described for precise injection molding and creation of fiber optic plastic ferrules or other molded parts. In a described application, a molded plastic part is formed that yields four ferrules. The plastic part has a central hub from which four arms extend, each having a ferrule-carrying portion. The mold has a pair of interengageable halves that mate to form a series of channels and gates for formation of the plastic part. Molten plastic flows from a central chamber through the channels. From each channel, the molten plastic then flows into a fan-shaped gate, a ring-shaped gate and an annular parabolic-shaped gate and finally into a molding chamber for molding the tubular ferrule. The molten plastic is temporarily accumulated by the gating system and then flows into the molding chamber in an evenly distributed manner.
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