玻纤增强PA66以太网连接器绝缘体平面度优化

Optimization of Flatness of Glass Fiber Reinforced PA66 Ethernet Connector Insulator

随着以太网在图书馆数字化中的广泛应用,以太网连接器绝缘体作为其硬件设备中的关键部件,其精细化设计对于以太网功能性的实现起关键作用。针对某玻纤增强PA66以太网连接器绝缘体注塑成型的平面度优化问题,以熔料温度、模腔温度、保压时间和保压压力为变量,设计正交试验法探究优化方案。结果表明:模腔温度对平面度的影响极显著,保压压力和保压时间对平面度的影响显著,熔料温度对平面度的影响不显著。通过分析平面度随工艺参数水平变化曲线,得到优化的工艺为A4B2C4D1。通过模流分析发现,优化工艺的平面度为0.4359 mm,相比初始工艺结果相对下降24.0%,达到指标要求;充填过程稳定、熔体前沿温度下降幅度小且外观面无熔接线,满足成型要求。实际注塑成型试模样品的外观及尺寸测量结果均满足要求,验证了优化工艺的合理性。

With the wide application of Ethernet in library digitization,the fine design of Ethernet connector insulator,as a key component of its hardware equipment,plays a key role in the realization of Ethernet functionality.Aiming at the flatness optimization problem of a glass fiber reinforced PA66 Ethernet connector insulator injection molding,the orthogonal test was designed to explore the optimization scheme with the melting material temperature,mold cavity temperature,holding time and holding pressure as variables.The results show that the influence of cavity temperature on flatness is very significant,the influence of holding pressure and holding time on flatness is significant,and the influence of melting temperature on flatness is not significant.By analyzing the curve of flatness with the level of process parameters,the optimized process is A4B2C4D1.Through mold flow analysis,it is found that the flatness of the optimized process is 0.4359 mm,which is 24.0%lower than the initial process result,and meets the index requirements.The filling process is stable,the melt front temperature decreases slightly,and the appearance surface has no weld line,which meets the molding requirements.The appearance and size measurement results of the actual injection molding test sample meet the requirements,which verifies the rationality of the optimized process.