基于Mold?ow软件的PP保鲜盒注塑成型CAE分析及工艺优化
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摘要
以保鲜盒为研究对象,采用Moldflow软件对保鲜盒的浇注系统和冷却系统进行设计,对注塑过程的充填流动、冷却和翘曲进行分析,验证塑件流动情况是否良好,工艺参数设计是否合理,从而减少塑件熔接痕、气穴等缺陷。最后,对冷却系统进行了优化处理。结果表明:优化后保鲜盒盒体最高温度为101.5℃,盒盖为104.2℃,均小于成型顶出温度105.0℃,说明冷却优化合理,满足冷却需要;优化后盒体与盒盖总翘曲变形分别为2.547,2.283mm,与优化前(分别为2.696,2.652 mm)相比有所改善。
The gating and cooling systems for fresh-keeping box were designed by Moldflow. The filling flow,cooling and warping in injection process were analyzed to verify the flow of plastic part and the process parameters design,preventing defects of the plastic parts,such as weld marks and cavitation. The cooling system was optimized as well. The results show that the highest temperature at the box body reaches 101.5 ℃,and that of box lid is 104.2 ℃,both are lower than the ejection temperature of 105 ℃,representing the optimization for cooling and meeting the requirements of cooling. The total warpage of box body and box lid are 2.547 mm and 2.283 mm respectively,better than those of 2.696 mm and 2.652 mm before optimization.
The gating and cooling systems for fresh-keeping box were designed by Moldflow. The filling flow,cooling and warping in injection process were analyzed to verify the flow of plastic part and the process parameters design,preventing defects of the plastic parts,such as weld marks and cavitation. The cooling system was optimized as well. The results show that the highest temperature at the box body reaches 101.5 ℃,and that of box lid is 104.2 ℃,both are lower than the ejection temperature of 105 ℃,representing the optimization for cooling and meeting the requirements of cooling. The total warpage of box body and box lid are 2.547 mm and 2.283 mm respectively,better than those of 2.696 mm and 2.652 mm before optimization.
引文
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[3]贺圣彦,楚纯朋,邓娇,等.基于CAE的厚壁塑件注塑工艺参数优化[J].中国塑料,2016,30(2):59-63.
[4]Dangayach G S,Guglani L.Application of moldflow and taguchi technique in improving the productivity of injection moulded energy meter base[J].Inter J Process Manag Bench,2015,5(3):375-385.
[5]于盛睿,曾兰玉,韩文.基于CAE技术平台的塑料手柄浇注系统设计与优化[J].塑料,2016,45(6):83-88.
[6]王锦红,何冰强.基于Moldflow的棘架套件浇注系统方案CAE分析[J].塑料,2016,45(1):79-85.
[7]王波.Moldflow模流分析在注塑过程中的应用[J].塑料科技,2015,43(6):75-78.
[8]郗宏勋,黄鹏.基于Moldflow的汽车前面板CAE优化分析与模具设计[J].塑料工业,2016,44(7):55-78.
[9]孙丽丽,苏学满.基于Moldflow的输液瓶胚注塑工艺参数优化设计[J].塑料工业,2014,42(1):43-47.