摘要
以某企业叶轮塑件为研究对象,针对塑件腔体内部及柱位冷却难度大的问题,设计了叶轮注塑模具传统冷却水道和随形冷却水道方案,并进行了模流分析及对比分析,结果表明,与叶轮注塑模具传统冷却水道方案相比,随形冷却水道方案的塑件表面温差降低了22.1%,达到顶出温度的时间缩短了26.3%,柱位处顶出时的最大体积收缩率降低了30.6%,柱位处的翘曲变形值降低了51.7%。并且,根据随形冷却水道方案设计了叶轮注塑模具结构,进行了试模验证。对比分析与试模验证结果表明,设计的叶轮模具随形冷却水道有效地改善了塑件的冷却效果,提高了塑件的生产效率,降低了塑件的体积收缩率和翘曲变形值,从而改善了塑件质量。
Taking the injection part of an impeller of the company as the research object,according to the problem of difficult cooling in the cavity and column position of plastic parts,the traditional cooling channel and conformal cooling channel of impeller injection mold were designed.The moldflow analysis and comparative analysis were carried out.Compared with traditional cooling channels of impeller injection mold,the temperature difference of the injection part surface was reduced by 22.1%,the time to reach the ejection temperature was reduced by 26.3%,the maximum volume shrinkage at ejection of impeller boss area was reduced by 30.6%,the warpage value of impeller boss area was reduced by 51.7%.Then,according to the scheme of conformal cooling channel,the injection mold structure of impeller was designed,and finally the test mold was verified.The results of comparative analysis and experimental verification showed that the cooling effect of plastic parts were effectively improved by the follow-up channel of impeller mold,the production efficiency of plastic parts was improved,the volume shrinkage and warping value of plastic parts were reduced,and the quality of plastic parts was improved.
作者
唐春华
张斌
李军利
TANG Chunhua;ZHANG Bin;LI Junli(Mechanical and Electrical Engineering College,Zhuhai City Polytechnic,Zhuhai,Guangdong 519090,China)
出处
《塑料》
CAS
CSCD
北大核心
2022年第3期133-136,共4页
Plastics
基金
2019年度广东省普通高校特色创新类项目(2019GKTSCX096)。
关键词
注塑模具
随形冷却水道
冷却水道设计
模流分析
对比分析
injection mold
conformal cooling channel
cooling channel design
moldflow analysis
comparativeanalysis
