摘要
以遥控器后盖为研究目标,为解决成形过程中的缺陷问题,同时满足遥控器后盖尺寸和强度要求,基于模流分析技术﹑正交试验技术以及加权综合评分法对不同的熔料温度﹑充填体积﹑注射时间参数进行组合,以翘曲变形量和残余应力为优化目标进行数据处理。结果表明,遥控器后盖注塑过程填充饱满,无明显缩痕,浇口位置上移,解决了流动不平衡的问题;以残余应力和翘曲变形量作为单一目标和多目标的最优参数组合为:熔料温度为250℃、填充体积为100%、注射时间为1.2 s,对应预测结果的翘曲变形量为0.380 3 mm,残余应力为45.46 MPa,与优化前相比,分别降低了29.4%和4.78%,并且,通过实际生产验证了结果,为薄盖类塑件的制造提供了理论依据。
Taking the back cover of the remote control as the research goal,it solved the defects in the forming process and meets the size and strength requirements of the back cover of the remote control.Based on mold flow analysis technology,orthogonal test technology and weighted comprehensive scoring method,the parameters of different melt temperature,flling volume and injection time are combined,and data processing was carried out with warpage deformation and residual stress as optimization goals.The results showed that the injection molding process of the back cover of the remote control was full and there was no obvious sink mark,and the gate position was moved up to solve the problem of unbalanced flow.The material temperature was 250℃,the flling volume was 100%,and the injection time was 1.2 s.The warpage deformation corresponding to the predicted results was 0.3803 mm,and the residual stress was 45.46 MPa,which were 29.4%and 4.78%lower than those before optimization,and passed the actual production verification.The correctness of the results could provide production basis for the manufacture of thin cover plastic parts.
作者
李天峰
LI Tianfeng(School of Digital Media and Art Design,Nanyang Institute of Technology,Nanyang,Henan 473004,China)
出处
《塑料》
CAS
CSCD
北大核心
2023年第3期103-108,120,共7页
Plastics
关键词
遥控器后盖
注塑成形
模流分析
残余应力
翘曲变形
响应曲面法
remote control back cover
injection molding
Moldflow analysis
residual stress
warping
response surface method
