基于正交试验的塑料接线盒翘曲变形优化控制

Warpage Optimization of Plastic Junction Box Based on Orthogonal Test

注塑成型是一个具有多变量的复杂成型工艺过程,采用正交试验合理安排注塑工艺过程中进行多因素试验,通过分析各因素对试验结果的影响,确定工艺参数优化组合。对塑料接线盒的翘曲变形进行了优化控制研究。通过正交试验设计,从影响翘曲变形的6个工艺参数的角度分析了对塑件X、Y、Z3个方向的翘曲变形量的影响,得到塑件翘曲变形最佳的注塑工艺参数组合:模具温度45℃、熔体温度190℃、保压时间35s、保压压力120%、注射时间1.5s、冷却时间13s。通过试模,可知注塑出的塑件质量优良,符合客户要求。通过正交试验进行了塑件注塑质量优化控制,可针对不同试验指标,进行不同的试验因素分析,避免大量无序的试验成本,并且能够有效地解决了问题,可推广应用到其它塑件成型。

Injection molding was a multivariable complex molding process.The optimal combination of process parameters was determined by analyzing the influence of various process parameters on the orthogonal test results.The warpage optimization control of plastic junction box was studied.Through orthogonal test design,The warpage of three directions of X,Y and Z was studied by the influence of six process parameters affecting warpage.The optimal combination of injection parameters for plastic parts was found: mold temperature 45℃,melt temperature 190℃,holding time 35 s,holding pressure 120%,injection time 1.5 s and cooling time 13 s.The injection molded parts were of excellent quality and met customer requirements.The injection quality of plastic parts could be controlled by orthogonal test,different test factors could be analyzed according to different test indexes to avoid a large number of disorderly test costs and solve problems accurately.And it could be extended to other plastic parts molding.