挤出吹塑成型初始型坯温度的数值模拟优化  

Numerical Simulation and Optimization on the Parison's Initial Temperature of Extrusion Blow Molding

作　　者：易婷[1] 焦志伟[1] 杨卫民[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《塑料》2016年第6期69-72,共4页Plastics

基　　金：中央高校基本科研业务费专项资金(YS1403)

摘　　要：为改善挤出吹塑过程中制件壁厚不均现象,在型坯壁厚非均匀优化方法的基础上,使用计算流体力学软件Polyflow数值模拟了HDPE油桶的非等温吹胀,并利用初始型坯温度优化程序,通过改变初始型坯局部温度来控制吹胀制品的壁厚。结果表明,使用初始型坯温度优化程序对非均匀初始壁厚型坯进行5次优化后,吹塑制品的壁厚均趋近于目标壁厚值0.003 m,且达到壁厚平均函数最小值3.6×10^(-6)m^2。In order to improve the non-uniform phenomenon of product＇ s thickness after the extrusion blow molding process,the software Polyflow was used to simulate the infation process of extrusion blow molding under non-isothermal condition,on the basis of the optimal non-uniform thickness initial parison. And the temperature optimization program was used to control the thickness of product by changing the initial temperature of parison. The results showed that the thicknesses of product closed to the target of 0. 003 m,and the average function reached the minimum value of 3.6 ×10^-6m^2 after 5 times optimization.

关 键 词：POLYFLOW 挤出吹塑 数值模拟 非等温 温度优化 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]