基于Moldflow的汽车操纵杆注塑成型质量分析与优化

Quality Analysis and Optimization of Injection Molding of Automotive Control Handle Based on Moldflow

采取Moldflow分析并优化了汽车操纵杆注塑成型的质量。结果表明:在设计的三种浇注系统方案中,方案1通过增加浇口数量,采用两个点浇口进胶,熔接线、短射、翘曲变形最严重;方案2对注塑位置进行调整,有效改善了翘曲变形的情况,但熔接线、短射现象较明显;方案3熔接线变淡,但有效改善了短射和翘曲变形的情况。在模具温度61℃、熔体温度178℃、保压压力为91%填充压力、注射时间5.6 s、保压时间11 s条件下,翘曲具有最小变形量。试模实验表明:操纵杆饱满性较强,填满了卡铜线的四个凸台,并未出现侧边卡位缺胶的情况,熔接线也没有呈现在内外表面上,样品翘曲变形值为1.632 mm,最佳因素水平组合的Moldflow模拟的翘曲变形量为1.617 mm。

Moldflow was used to analyze and optimize the quality of injection moulding of automobile joystick. The results show that: among the three gating system schemes designed, by increasing the number of gates, scheme 1 uses two point gates for gluing, and the most serious deformation is welding line, short shot and warpage. Scheme 2 adjusts the position of injection moulding, effectively improves the warping deformation, but the welding line and short shot are poor. Scheme 3 weld line becomes weak, but effectively improve the short shot and warpage situation. Under the conditions of mould temperature 61℃, melt temperature 178℃, packing pressure 91%, injection time 5.6 s and holding time 11 s, warpage has the minimum deformation. The experimental results show that the control rod has strong plumpness and is filled with four convex platforms of copper-clad wires. There is no lack of glue in side clamping position, and the welded wires do not appear on the inner and outer surfaces. The warping deformation value of the sample is 1.632 mm. The warping deformation value simulated by Moldflow with the best combination of factors and levels is 1.617 mm.