四川大学学报（自然科学版）2024，Vol.61Issue(5)：147-155,9.DOI:10.19907/j.0490-6756.2024.054001
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
摘要
Abstract
In the competitive field of plastic manufacturing,particularly in the production of bottle caps,the ef-ficiency and quality of injection moulding processes are of paramount importance.This study delves into an in-novative approach to enhance the cooling efficiency of plastic bottle cap injection moulds,a critical factor in re-ducing 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 Mul-tiphysics software,an advanced finite element analysis tool,to perform thermal analysis of the mold.This as-sessment 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 tempera-ture(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 de-sign 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,improv-ing the uniformity of surface temperature,and minimizing pressure loss within the cooling system.The opti-mization yielded significant improvements:The condensate flow rate was set at 0.015 m/s,the cooling chan-nel diameter at 7.76 mm,and the cooling cavity diameter at 16.85 mm.These optimized parameters led to a 1.42%reduction in stripping time,a 2.97%decrease in surface temperature standard deviation,and a notable 19.86%reduction in cooling channel pressure loss.The results of this study not only optimize the cooling effi-ciency of the bottle cap mold,shorten the production cycle of the product,improve the surface quality of the product,but also provide a theoretical basis and practical guidance for the design and structural optimization of the injection mold cooling system.In addition,through the exploration and application of form-following cool-ing technology,this study provides an important academic contribution to the field of mold design,and lays a foundation for the future research and development of mold cooling technology.关键词
注塑模具/COMSOL/冷却效能/压力损失/结构优化Key words
Injection mold/COMSOL/Cooling efficiency/Pressure loss/Structure optimization分类
信息技术与安全科学引用本文复制引用
梅笑源,罗刚,胡晓兵,张义海,张雪健..瓶盖注塑模具冷却水道冷却效能分析与结构优化[J].四川大学学报（自然科学版）,2024,61(5):147-155,9.基金项目
四川省科技计划重点研发项目(2022ZHCG0049) （2022ZHCG0049）
