基于Moldflow的LED平板灯后壳成型分析及应用

Molding Analysis and Application of LED Flat Lamp Back Shell Based on Moldflow

在LED产品开发过程中,模具设计非常重要。传统的模具设计方法主要是尝试法,制模周期长,风险大,增加了产品开发周期。利用Moldflow软件进行模流分析,能在制模前期发现可能存在的问题。对产品结构和模具进行优化,从而减少研发时间,提高生产效率,增加企业在行业中的优势。本文以LED平板灯后壳成型为例,设计了3点针点浇口和6点针点浇口两种方案,采用Moldflow软件对平板灯进行注塑成型仿真分析,对比熔接痕、气穴分布、速度和压力切换时的压力、顶出时体积收缩率、缩痕数值、锁模力和翘曲变形参数结果,确定3点针点浇口方案更优。最后针对减少产品熔接痕和气穴给出建议。

In the process of LED product development,mold design is very important.The traditional mold design method is mainly trial method,which increases the product development cycle due to long mold making cycle and high risk.Mold flow analysis by Moldflow software can find the possible problems in the early stage of mold making.Optimize the product structure and mold,so as to shorten the development cycle,reduce production costs and enhance the core competitiveness of enterprises.In this paper,taking the back shell of LED flat lamp as an example,two schemes of 3-point gate and 6-point gate are designed.Moldflow is used to analyze the mold flow of the two schemes,and the results of welding mark,air hole distribution,velocity and pressure switching pressure,volume shrinkage rate at ejection,shrinkage mark value,mold locking force and warping deformation parameters are compared.The scheme of 3-point gate is better.Finally,some suggestions are given to reduce the weld mark and cavitation.