基于Moldflow和ANSYS Workbench的塑料按键注塑成型优化分析

Optimization Analysis of Plastic Key Injection Molding Based on Moldflow and ANSYS Workbench

以某款平板产品上的塑料按键为例,经前期分析,原设计方案注塑加工过程中易造成残余应力过大的问题。通过设计两种结构方案,分别进行Moldflow和ANSYS Workbench仿真分析,确立方案二为最优设计方案。通过L16(44)正交试验,对工艺参数进行优化。优化后方案二的最大残余应力为26.75 MPa。经仿真分析,方案二的按键力在设计要求范围内。通过优化分析,能够避免产品因残余应力过大,出现变形、开裂、强度不足等情况,对同类型产品在注塑成型分析及应用具有一定的借鉴意义。

Taking a plastic button on a flat plate product as an example,the previous analysis shows that the original design is easy to cause excessive residual stress during injection molding.Through the design of two structural schemes,Moldflow and ANSYS Workbench simulation analysis were carried out respectively,and the second scheme was determined as the optimal design scheme.The process parameters were optimized by L16(44) orthogonal test.The maximum residual stress of optimized scheme 2 is 26.75 MPa.Through simulation analysis,the key force of scheme two is within the design requirements.Through optimization analysis,it can avoid deformation,cracking and insufficient strength due to excessive residual stress,which has certain reference significance for the analysis and application of the same type of products in injection molding.