基于Moldflow超声波探测器外壳注塑模具优化设计

Optimal Design of Injection Mold Based on Moldflow Ultrasonic Detector Shell

超声波探测器是停车场智能化改造的重要设备之一,其外壳一般通过注塑成型加工而成,对于保护内部超声波传感器不受外界冲击及干扰起着十分重要的作用。利用计算机辅助技术,基于Moldflow软件,设计了某型号超声波探测器外壳注塑模具的浇注系统和冷却系统,分析了熔体在型腔内部的流动性和模具的翘曲变形,采用正交试验法,利用极差数据分析法和方差数据分析法,探究了影响翘曲变形的关键因素,并对注塑工艺参数进行了优化。试验结果表明:充填压力是影响超声波探测器外壳翘曲变形的主要因素;优化后的工艺参数使由所有效应、冷却不均效应、收缩不均效应造成的最大翘曲变形量分别为降低了22.41%、27.21%和22.48%,使流动不平衡性降低了1.41%,相比初始参数有了显著改善。

Ultrasonic detector is one of the important equipment for the intelligent transformation of the parking lot.Its shell is generally processed by injection molding.It plays a very important role in protecting the internal ultrasonic sensor from external impact and interference.Using computer-aided technology,based on Moldflow software,a casting system and cooling system of a certain type of ultrasonic detector shell injection mold were designed,the melt flow inside the cavity and the warpage deformation of the mold were analyzed,and the orthogonal test method was used.Using the range data analysis method and the variance data analysis method,the key factors affecting the warpage deformation were explored,and the injection molding process parameters were optimized.The test results show that the filling pressure is the main factor affecting the warpage deformation of the ultrasonic detector shell;the optimized process parameters reduce the maximum warpage deformation caused by all effects,uneven cooling effect and uneven shrinkage effect by 22.41%,27.21%and 22.48%,which reduces the flow imbalance by 1.41%,which is a significant improvement compared to the initial parameters.