CAE技术在解决仪表盒注塑成型缺陷中的应用

Application of CAE Technology in Solving the Defects of Injection Molding

仪表盒结构特殊、质量要求高,根据经验设计的模具在试模中会出现短射等成型缺陷,通过反复调整工艺参数、增加浇口数量等途径仍无法解决问题。应用CAE技术对原几种修模方案进行分析比较,发现浇口数量越多,成型缺陷现象越严重,分析结果符合实际试模情况。通过CAE技术分别对2个产品进行浇口位置优化分析,证实经验选择的浇口位置基本合理;再根据对不同浇口数目的分析结果,在原"1+1"浇口方案上放大浇口尺寸、重新选择吨位较大的注塑机分析,成型缺陷得到有效改善,为后续成功修模提供了参考的价值,也进一步验证CAE技术在解决注塑成型缺陷及注塑模优化设计中的必要性与重要性。

The structure of the instrument box was speeial and the quality requirements were high. The mold was designed according to the experience. All kinds of defects like short injection occurred when the mold was tested. The prohlems were unable to be solved by adjusting process parameters anti increasing the gate number. It was found that the more the number of gates,the more serious the forming defects,and the analysis results were in aceord with the aetual test. CAE technology was used to optimize the loeatinn of 2 produets, h was proved that the gale location was reasonable. According to the analysis resuhs of different gate numbers, it was analyzed on the original ＂ 1 ＋ 1 ＂ gate scheme by enlarging the size of the gate and selecting the large tonnage injection molding machine. Forming defects were effectively improved. The valualde reference for successful repairing mold was provided. The necessity and importance of CAE technology in the solution of forming defects and optimization design of plastic injection were proved.