瓶盖注塑模具冷却水道冷却效能分析与结构优化  

Cooling efficiency analysis and structure optimization of cooling channel of bottle cap injection mold

作　　者：梅笑源 罗刚 胡晓兵[1] 张义海 张雪健 MEI Xiao-Yuan;LUO Gang;HU Xiao-Bing;ZHANG Yi-Hai;ZHANG Xue-Jian(School of Mechanical Engineering,Sichuan University,Chengdu 610065,China;Sichuan Yibin PUSH MOLD Co.,Ltd.,Yibin 644000,China)

机构地区：[1]四川大学机械工程学院,成都610065 [2]四川省宜宾普什模具有限公司,宜宾644000

出　　处：《四川大学学报（自然科学版）》2024年第5期147-155,共9页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省科技计划重点研发项目(2022ZHCG0049)。

摘　　要：以瓶盖注塑模具为研究对象,设计了4种不同的随形冷却方案,利用COMSOL软件对模具进行热分析,分析不同冷却水道塑件达到脱模温度所需时间、表面温度分布以及冷却水道压力损失,结果表明第四种冷却水道的冷却性能最优.利用Design-Expert 13软件,基于Box-Behnken响应曲面试验设计方法对第四种冷却水道进行结构优化,获得了给定条件下的最优解,使冷却水道达到脱模时间降低1.42%,表面温度标准差降低2.97%,压力损失降低19.86%.本文方案提升了瓶盖模具冷却性能,缩短了产品的生产周期,提高了产品表面质量,为其他注塑模具冷却水道结构优化提供参考.In the competitive field of plastic manufacturing,particularly in the production of bottle caps,the efficiency and quality of injection moulding processes are of paramount importance.This study delves into an innovative approach to enhance the cooling efficiency of plastic bottle cap injection moulds,a critical factor in reducing cycle times and promoting product quality.By introducing four novel form-following cooling designs,this research aims to pioneer advancements in mould cooling technologies.The analysis uses COMSOL Multiphysics software,an advanced finite element analysis tool,to perform thermal analysis of the mold.This assessment includes the time required for the plastic to reach the release temperature,the uniformity of the mold surface temperature distribution,and the quantification of the pressure loss in the cooling channel.The results show that the fourth cooling channel scheme of the four designs has remarkable advantages in its excellent cooling performance and efficiency,achieving the shortest time for plastic parts to reach the release temperature(5.6 s),the lowest standard deviation of mold surface temperature distribution(11.44)and the smallest cooling channel pressure loss(2.82 Pa).Further,this study uses Design-Expert 13 software combined with Box-Behnken response surface Design method to deeply optimize the structure of the fourth cooling channel.This optimization phase focused on fine-tuning the structure of the fourth cooling channel by adjusting key design variables:The diameters of the cooling channel and cooling cavity,along with the condensate flow rate.The objective was to enhance cooling efficiency comprehensively while reducing the demoulding time,improving the uniformity of surface temperature,and minimizing pressure loss within the cooling system.The optimization yielded significant improvements:The condensate flow rate was set at 0.015 m/s,the cooling channel diameter at 7.76 mm,and the cooling cavity diameter at 16.85 mm.These optimized parameters led to a 1.42%reduction in s

关 键 词：注塑模具 COMSOL 冷却效能 压力损失 结构优化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]