带有晶格结构的模具冷却水道优化设计

Optimization design of mold cooling channel with lattice structure

以某喷雾式化妆品盖为对象,在设计模具型芯的随形水路的基础上,在其顶部设计晶格结构,借助Moldex和Ansys进行仿真,分析模具型芯表面的温度分布情况以及受力情况,并用选择性激光熔化(SLM)制造的型芯零件进行实验验证。结果表明,晶格结构的传热性能良好,可以显著改善温度分布不均匀的现象,型芯表面温度分布良好,型芯表面温差改善了78%,添加了晶格结构的模具型芯强度满足使用要求。

Taking a certain spray cosmetic cap as an object,a lattice structure was designed on the top of the mold core based on the design of the conformal cooling channel of mold core.A simulation was carried out with the help of the Moldex and Ansys software to analyze the temperature distribution on the surface of the mold core as well as the stress situation.Futhermore,the experimental validation was also performed on the mold core parts manufactured by selective laser melting.The results indicated that the resultant lattice structure exhibited good heat transfer performance and improved the problem in the uneven temperature distribution significantly.The surface of the core presented a homogenous temperature distribution,and its surface temperature difference was improved by 78%.The strength of the core of the mold with the added lattice structure could meet a requirement of practical use.