小尺度注塑件浇道剪切机构的研究

Study on Shearing Mechanism of Pouring Channel in Small-scale Injection Molding Parts

分析了小尺度注塑件浇道剪切的要求与特点,提出了凸轮机构式定位、伸入、剪切运动组合剪切方案,详细分析了驱动部件——直线步进电动机的推程、推力的计算方法,最后用实验验证了剪切机构的可行性、直线步进电动机选型的合理性。该机构具有很好的实用价值。

The shearing requirements and characters of pouring channel in a small-scale injection molding part were analyzed, and a shearing method with cam mechanisms which assembling position motion, extension motion and shearing motion was put forward, the pushing pathway and pushing force calculating methods of the driving part named linear stepping motor were analyzed in detail. At last, experiments proved the possibility of the shearing mechanism. The shearing mechanism has good practical value.