| 摘要 |
A mold for objects of plastic material in which a main injection passage has separate passages extending radially therefrom and which open into the mold cavities, and in which a mechanical element sweeps the space located above the ejectors when the mold is open so that the molded parts which may have remained attached to the ejectors are caused to fall, the said mechanical sweeping element being constituted by the sprue formed by the material which fills the injection and which are formed by the material filling lateral passages located substantially in the joint plane of the mold and provided with radial extensions, while the means for ejecting the sprue are so arranged as to impart a movement of rotation about the axis of the sprue to the assembly which is formed by the sprue and the sprue arms.
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