平板类塑件翘曲变形数值模拟与实验分析
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摘要
运用Moldflow分析软件,选取模具温度、熔体温度、保压压力与保压时间四因素三水平安排正交实验,模拟平板类塑件的翘曲变形.以模拟为基础,在注塑机上进行实际注塑成型,扫描获取塑件三维数据,并用Imageware软件提取平板类塑件长边与短边的点云,计算宽度与长度方向的翘曲变形量.结果表明:翘曲变形模拟分析与实际注塑成型误差为-0.083 1~0.094 9mm;保压压力、熔体温度、保压时间与模具温度对翘曲变形模拟分析的影响依次减小.
Warpage simulation of flat plastic products was conducted using Moldflow software.The mold temperature,melt temperature,packing pressure and packing time were selected as the analyzed factors with three levels to design the orthogonal experiment.Based on simulation,the actual injection molding was carried out and the plastic products′three-dimensional data was obtained by scanning.The Imageware software was adopted to extract clouds of flat plastic product′s long side and short side,and to calculate the warpages of width and length.Results show that errors between the simulation and the actual injection molding range from-0.083 1 to 0.094 9 mm,and the impact on warpage in simulation analysis from process parameters packing pressure,melt temperature,packing time and mold temperature decreases successively.
Warpage simulation of flat plastic products was conducted using Moldflow software.The mold temperature,melt temperature,packing pressure and packing time were selected as the analyzed factors with three levels to design the orthogonal experiment.Based on simulation,the actual injection molding was carried out and the plastic products′three-dimensional data was obtained by scanning.The Imageware software was adopted to extract clouds of flat plastic product′s long side and short side,and to calculate the warpages of width and length.Results show that errors between the simulation and the actual injection molding range from-0.083 1 to 0.094 9 mm,and the impact on warpage in simulation analysis from process parameters packing pressure,melt temperature,packing time and mold temperature decreases successively.
引文
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[2]孙显俊,苏旭明,毛江辉,等.复杂几何体注塑制品翘曲变形模拟仿真[J].南京航空航天大学学报,2015,47(5):752-759.DOI:10.16356/j.1005-2615.2015.05.020.
[3]XU Yingjie,ZHANG Qingwen,ZHANG Weihong,et al.Optimization of injection molding process parameters to improve the mechanical performance of polymer product against impact[J].International Journal of Advanced Manufacturing Technology,2015,76(9/10/11/12):2199-2208.DOI:10.1007/s00170-014-6434-y.
[4]莫彦波,李旭东,唐园亮.注塑成型工艺参数对电脑显示器前框翘曲变形的影响[J].塑料,2015,44(5):94-96.
[5]刘玉,张罗,申昱.汽车内饰件翘曲变形的CAE分析及优化设计[J].模具技术,2017(4):6-10.
[6]隆灯梅.MoldFlow模流分析在解决塑件翘曲变形中的应用[J].模具制造,2009,9(11):17-20.DOI:10.13596/j.cnki.44-1542/th.2009.0285.
[7]杨安,肖国华,华明伟.模流数值分析与试模工艺参数实践设置计算[J].模具技术,2015(3):5-9.
[8]孙国栋,刘长华.基于Moldflow软件的双色注射成型过程研究[J].塑料工业,2016,44(1):48-50.
[9]薛玮珠.基于CAE分析的汽车饰件顺序注射模具成型研究[J].机电工程,2015,32(5):622-625.
[10]王金海,梁卫海,李岩,等.CAE分析在改善模内注射塑件翘曲变形中的应用[J].模具工业,2016,42(7):15-18.DOI:10.16787/j.cnki.1001-2168.dmi.2016.07.003.
[11]孙健华,顾海,张捷,等.基于CAE和DOE技术的薄壁塑件翘曲变形分析及优化[J].计算机辅助工程,2017,26(3):40-44.DOI:10.13340/j.cae.2017.03.008.
[12]王建康,李彬,邓宝清.基于Moldflow的电器开关推件翘曲变形分析与浇口位置选择[J].塑料工业,2017,45(10):60-64.
[13]张继祥,秦海涛,高波,等.基于正交实验的薄壁塑件翘曲变形模拟分析[J].塑料工业,2013,41(9):64-67.
[14]王利霞,张娜,申长雨,等.应用Taguchi实验设计法最小化注塑成型制品沉降斑[J].塑料工业,2004,32(4):26-28.
[15]许建文,刘斌.注塑件体积收缩率变化的数值模拟优化与预报[J].华侨大学学报(自然科学版),2010,31(3):241-245.DOI:10.11830/ISSN.1000-5013.2010.03.0241.
[16]许建文,刘斌.非球面塑料光学透镜收缩变形的数值分析[J].华侨大学学报(自然科学版),2011,32(2):130-134.DOI:10.11830/ISSN.1000-5013.2011.02.0130.