典型注射U型件冷却水路设计与注射翘曲变形优化
Design of Cooling Water Circuit and Optimization of Injection Warpage Deformation for Typical Injection U-Pieces
林权 1陈达权 1刘其南 1陈丽军 1梁珍瑛 1苏光富 1吕新雨1
作者信息
- 1. 武夷学院 机电工程学院,福建 武夷山 354300
- 折叠
摘要
注射成型传统水路设计受加工条件限制,导致水路无法贴近产品的几何外形,冷却效果不佳,整体冷却不均以及区域积热等翘曲成型缺陷无法妥善解决.以典型注射U型件为例,通过模流分析比较常规隔板式水路与异型水路对产品注射翘曲变形的影响.结果表明:采用较大的冷却水路管径和较小的水路与产品的间距,翘曲变形倾向则越小,造成U型件翘曲变形主要原因是塑件底部积热问题;异型水路更能促进产品整体均匀冷却,异型水路冷却效率比常规隔板式水路提高了33.6%,冷却时间减少了 33.1%,产品翘曲变形量下降了 21.4%;冷却方面的工艺参数优化对改善产品翘曲变形量作用有限.
Abstract
The traditional water path design for injection molding is limited by the processing conditions,resulting in the water path can not be close to the geometric shape of the product,the cooling effect is not good,the overall cooling is not even and regional heat accumulation and other warpage molding defects can not be properly solved.Taking the typical injection of U-type parts as an example,through the mold flow analysis,comparing the impact of the conventional spacer-type water path and the profiled water path on the warpage deformation of the injection of the product.The results show that the warping tendency of U-shaped parts is smaller when the pipe diameter of cooling waterway is larger and the distance between waterway and product is smaller,the main cause of warping deformation is heat accumulation at the bottom of plastic parts.The Profiled waterway can promote the overall u-niform cooling of the product,the cooling efficiency of the profiled waterway is 33.6%higher than that of the con-ventional bulkhead waterway,the cooling time is reduced by 33.1%,and the warping deformation of the product is reduced by 21.4%.However,the optimization of cooling process parameters has limited effect on improving the warping deformation of the product.
关键词
U型件/模流分析/冷却系统/异型水路/冷却效率/工艺优化/翘曲变形Key words
U-pieces/model flow analysis/cooling system/profiled waterway/cooling efficiency/process opti-mization/warpage deformation引用本文复制引用
基金项目
福建省本科高校教育教学改革研究重大项目(FBJG20220051)
2023年国家大学生创新训练项目(202310397008)
出版年
2024
NETL
NSTL
万方数据