基于Moldflow的汽车后视镜座注塑模具优化设计

Optimization Design of Injection Mould for Car Rear-View Mirror Cover based on Moldflow

以汽车后视镜座为例,利用Moldflow分析软件分析了最佳浇口位置,建立了浇注系统和冷却系统。以体积收缩率变化为指标建立了正交试验方案,通过分析各因素对指标的影响程度,获得了最佳工艺参数组合。通过对模型翘曲变形的模拟分析,得出收缩不均和冷却不均是引起翘曲的主要原因。通过对浇注系统和冷却系统及相关工艺参数的优化设计,翘曲变形量达到最小,最后得到了优化的模具结构。结果表明:利用有限元分析方法,可以缩短模具设计周期,提高经济效益。

The car rear-view mirror cover was taken as an example. The optimal gate location was analyzed by Moldflow simulation and analysis software, and the gating system and cooling system was established. The orthogonal test scheme was established to study the influence of various on volume shrinkage ratio. And the optimal process parameter was obtained. Through analyzing the model of buckling deformation simulation, uneven contraction and uneven cooling were the main cause of warping. Through the gating system and cooling system and related process parameters optimization design, the warping deformation was reduced, and the mould structure was optimized. The results showed that using the finite element analysis, the cycle of die design was shorten and the economic benefits was improved.