基于数值模拟技术的塑料弯管注塑模优化设计

Optimal Design for the Injection Mold of Plastic Elbow Pipe Based on Numerical Simulation

运用MOLDFLOW对直角ABS塑料弯管的注射过程进行系统的数值模拟,完成了塑料弯管的浇注系统设计,减小了熔接痕影响;预测了冷却系统设置对产品温度布局的影响,优化了冷却方案;通过翘曲分析,确定了收缩不均是影响产品尺寸形状精度的主要因素,从而掌握了产品成型工艺及特点.最后基于数值模拟分析结果,进行塑料弯管注射模具设计,优化了注塑模结构,实践证明该方法对注塑模设计有指导作用.

A systematic numerical simulation is conducted for the right-angled ABS plastic elbow pipe by dint of moldflow,which has not only accomplished the gating system design of plastic elbow pipe,but also weakened the influence of welding marks. Meanwhile,the influence of cooling system design on product＇s temperature distribution has been predicted to optimize the cooling solution. Additionally,the warp analysis is implemented to determine that the uneven contraction is the major factor to product size,shape and precision,based on which product molding process and features are figured out. Finally,based on the numerical simulation analysis results,the injection mold of plastic elbow pipe is designed to optimize injection mold structure. The practice proves that this method plays a guiding role in the design of injection mold.