基于CAE仿真技术的连接器端子注塑成型优化
Optimization of Connector Terminal Injection Moulding Based on CAE Simulation Technology
针对注塑过程存在气穴、焊接线和缩痕等缺陷问题,以聚对苯二甲酸丁二醇酯/聚对苯二甲酸乙二醇酯(PBT/PET)复合材料的连接器端子为研究对象,通过UG软件构建3D模型并利用Moldflow进行仿真分析,以表面温度、熔体温度、冷却时间和注射压力为实验变量建立响应面模型并进行方差分析。结果表明:模型相关系数R2为0.927 3,显著性水平P值小于0.000 1,表面温度69 ℃,熔体温度248 ℃,冷却时间52 s,注射压力81 MPa,翘曲变形量降至0.140 5 mm。此时制件质量最好,满足设计要求。通过响应面优化,气穴、焊接线和缩痕等缺陷显著减少,成型质量大幅提升,验证了优化方案的有效性和实际应用价值。
Aiming at the defects such as cavitation, welding line and shrinkage mark in the injection molding process, the paper took the connector terminal of polybutylene terephthalate/polyethylene terephthalate (PBT/PET) composites as the research object. The 3D model was constructed by UG software and simulated by Moldflow. The response surface model was established with surface temperature, melt temperature, cooling time and injection pressure as experimental variables, and the variance analysis was carried out. The results showed that the correlation coefficient R2 of the model was 0.927 3, the significance level P value was less than 0.000 1, the surface temperature was 69 ℃, the melt temperature was 248 ℃, the cooling time was 52 s, and the injection pressure was 81 MPa. The warpage deformation was reduced to 0.140 5 mm. At this time, the product quality was the best and met the design requirements. Through response to surface optimization, the defects such as cavitation, welding line and shrinkage mark were significantly reduced, and the forming quality was greatly improved, which verifies the effectiveness and practical application value of the optimization scheme.
CAE仿真技术 / 响应面法 / 连接器端子 / 注塑成型优化
CAE simulation techniques / Response surface methodology / Connector terminals / Injection moulding optimization
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