摘要 |
PURPOSE:To commutate of the inflow of resin and optimize the transmission pressure of cavity by forming the top end of a gate cutter into a two-stepped coaxial cylinder. CONSTITUTION:The diameter (d) in the top end of a gate cutter is made into a smaller diameter (d<D) in a predetermined degree than the outer diameter D of the gate cutter 1. And, it is constituted to be fitted into an opposed dies 4 coaxially with a predetermined clearance (t) when mold-clamp is effected therein. And then, the gate cutter 1 (outer diameter D) fits on the dies 4 (inner diameter D') in the gate shearing time. By forming the positional relations in this fashion, a gate thickness t or t' and a gate round l can be provided so that a commutation of the inflow of resin and an optimized effect of transmission pressure to the cavity 5 are also provided thereto.
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