基于Moldflow的异径三通管件注塑工艺优化  

Optimization of Injection Molding Process for Reducing Tee Pipe Fittings Based on Moldflow

作　　者：高莉 谢海波 蒋梦麒 GAO Li;XIE Haibo;JIANG Mengqi(Linhai Weixing New Building Materials Co.,Ltd.,Linhai 317000,China;Zhejiang Dahao Automotive Co.,Ltd.,Taizhou 318000,China)

机构地区：[1]临海伟星新型建材有限公司 [2]浙江大豪车业有限公司

出　　处：《塑料工业》2023年第12期63-69,共7页China Plastics Industry

摘　　要：本文以异径三通管件为研究对象,基于数值模拟软件Moldflow优化管件生产工艺,控制制品承口与支口尺寸超差。首先通过约束制品与型芯接触面上节点自由度来近似模拟制品在冷却阶段型芯的限制作用,提升数值模拟精度,将管件支口X、Z方向的预测尺寸与实测尺寸的差异由1.48 mm与1.17 mm分别降低至0.46 mm与0.08 mm,管件承口Y、X方向的预测尺寸与实测尺寸的差异由1.03、0.79 mm分别降低至0.22、0.34 mm。随后基于优化的数值模型分析3组成型工艺优化方案,通过对比3组方案的输出结果,最终确定方案1为最佳注塑方案。试制结果表明,优化的注塑生产工艺可有效控制产品承口与支口的尺寸超差,产品满足验收要求。Taking reducing tee pipe fitting as the research object and the production process of pipe fitting was optimized based on the numerical simulation software Moldflow to control the size over difference of socket and branch.Firstly,by constraining the degree of freedom of the joint on the contact surface between the constrained product and the core,the limiting effect of the product on the core during the cooling stage was approximately simulated,which improved the numerical simulation accuracy,and reduced the difference between the predicted size and the measured size in the X and Z directions of the pipe fitting branch from 1.48 mm and 1.17 mm to 0.46 mm and 0.08 mm,respectively.The difference between the predicted size and the measured size in Y and X directions of pipe fitting socket decreased from 1.03 mm and 0.79 mm to 0.22 mm and 0.34 mm,respectively.Then,based on the optimized numerical model,the three constitutive process optimization schemes were analyzed.By comparing the output results of the three schemes,scheme 1 was finally determined as the best injection molding scheme.The results of trial production show that the optimized injection molding process can effectively control the size deviation of the product socket and branch,and the product can meet the acceptance requirements.

关 键 词：厚壁管件 边界条件 数值模拟精度 尺寸超差 注塑工艺优化 

分 类 号：TQ320[化学工程—合成树脂塑料工业]