基于计算机辅助技术的挡油板注塑成型优化

Optimization of Injection Molding of Oil Baffle Plate Based on Computer Aided Technology

针对某35%玻纤增强尼龙材料的挡油板,利用计算机辅助技术对其注塑成型过程进行模拟。基于推荐工艺参数计算得到挡油板的最大翘曲变形量为4.704 mm,缩痕指数为0.313 9%,不满足设计指标要求。设计正交试验,分析得到各工艺参数对其最大翘曲变形的影响程度排序为:保压时间>保压压力>熔体温度>冷却时间>模具温度;对缩痕指数的影响程度排序为:保压时间>冷却时间>模具温度>保压压力>熔体温度。综合分析得到优化的工艺参数组合为A2B4C2D1E4,仿真结果显示,最大翘曲变形量及缩痕指数相比初始工艺结果分别降低40.1%、50.9%,且满足设计指标要求,实际试模状态也验证其应用于生产的可行性。

The injection molding process of a 35% glass fiber reinforced nylon oil baffle plate was simulated by using computer-aided technology. Based on the recommended process parameters, the maximum warpage of the oil baffle plate was 4.704 mm, and the sink index was 0.313 9%, which cannot meet the standard of design. Through the analysis of orthogonal test, the order of influence degree of each process parameter on the maximum warpage deformation of oil baffle plate was as follows: holding time>holding pressure>melt temperature>cooling time>mold temperature. The order of the influence degree of the process parameters on the sink index of the oil baffle plate was as follows: holding time>cooling time>mold temperature>holding pressure>melt temperature. The optimized combination of process parameters was A2B4C2D1E4. The simulation results show that the maximum warpage deformation and sink index of the oil baffle plate are reduced by 40.1% and 50.9% respectively compared with the initial process results, which can meet the standard of design. The status of actual mold test verify the feasibility of applying the optimized process parameters combination to the actual production.