基于CAE的医疗器械底座浇口优化分析

Optimization Analysis of Medical Device Base Gates Based on Computer-aided Technology

医疗器械底座为达到高精密金属丝杆的平行安装要求,同时满足加压驱动模块的紧密配合。建立符合使用要求的医疗器械底座三维模型,通过计算机辅助技术CAE对浇口位置匹配性进行了分析,设定了3种浇口方案,对不同方案进行了注塑模拟分析,对比了3种方案的充填时间、熔接线、锁模力和所有效应变形,通过比对这些数据确定了单浇口位于底座中部位置的浇口方案最佳,其中单浇口方案相比较于多浇口方案锁模力由22.30t下降至17.74t,降低了20.40%,有效提升了模具的使用寿命。由此得到可行的注塑方案,为生产实践提供了指导,有利于生产效率的提高。

The medical device base is to meet the parallel installation requirements of high-precision metal screw rods, and at the same time to meet the tight fit of the pressurized drive module. Established a three-dimensional model of the medical device base that meets the requirements of use, analyzed the gate position matching through computer-aided technology CAE, set up three gate schemes, carried out injection simulation analysis for different schemes, and compared the three schemes. Filling time, weld line, clamping force and all effect deformations. By comparing these data, it is determined that the gate scheme with a single gate located in the middle of the base is the best, and the single gate scheme is compared with the multi-gate scheme. Clamping force from 22.30t to 17.74t, a decrease of 20.40%, effectively improving the service life of the mold. From this, a feasible injection molding scheme is obtained, which provides guidance for production practice and is beneficial to the improvement of production efficiency.