Multi-gear injection mold

多齿轮注塑模具

Abstract

The utility model provides a multi-gear injection mold. The multi-gear injection mold comprises a movable mold and a fixed mold, a plurality of cavities are formed in the fixed mold, the bottom surface of the cavity is provided with three pouring gates for glue injection, three pouring gates of the cavity are communicated to a glue injection main pipeline through flow-dividing pipes with the same length and pipe diameter and then connected to a glue injection system; a fountain type cooling water pipeline communicated to the external of the mold is arranged around the cavity; and mold cores corresponding to the cavities are arranged in the movable mold, and an annular cooling water pipeline communicated to the external of the mold is arranged around each mold core. The application and implementation of the multi-gear injection mold have the following beneficial effects that the pressure in a product mold cavity composed of the cavities and the mold cores is uniform by adopting three-point glue injection, the annular cooling water pipeline matched with the periphery shape of the gear is combined when glue is injected, so that the coaxial precision decrease of the multi-gear product is avoided, the production efficiency is improved; and a runner can be well cooled while the cavities are cooled by adopting the fountain type water cooling pipeline.
本实用新型提供了一种多齿轮注塑模具,包括动模和定模,所述定模内设置有复数个型腔,每个所述型腔底面设置有三个注胶的浇口,每个型腔的三个浇口通过长度、管径相同的分流管道连通至注胶主管道,进而连接注胶系统;所述型腔的周围设有连通至模具外部的喷泉式冷却水管道;所述动模内设有与所述型腔相对应的型芯,每个所述型芯周围设置有连通至模具外部的环形冷却水管道。本实用新型的应用和实施具有下述有益效果:采用三点注胶,使型腔和型芯组成的产品模腔内压力较均匀;注胶时结合与齿轮外周形状相配合的环形水路冷却水道进行冷却,避免了多齿轮产品同轴精度下降,提高了生产效率■’采用喷泉式冷却水管道,在冷却型腔的同时能很好地冷却流道。

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    CN-104149286-ANovember 19, 2014优力精密塑胶(苏州工业园区)有限公司多齿轮注塑模具