| 摘要 |
A gate insert ( 10, 110 ) for a stack assembly in an injection molding machine having a gate ( 16, 116 ) through which a melt of thermoplastics material enters a mold cavity ( 14, 114 ). The gate insert has a cooling channel ( 18, 118 ) surrounding, and substantially uniformly spaced from, the gate ( 16, 116 ). The cooling channel has an inner surface with a profile substantially parallel to the gate. The cooling channel is further defined by a two-piece gate insert having interconnecting surfaces ( 111 a , 111 b).
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