塑件结构对气辅注射成型的影响  

Influence of unsymmetrical structure of plastic part on air-assisted injection molding

作　　者：毛华杰[1] 陈安锡[1] 郭巍[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《模具工业》2007年第7期13-17,共5页Die & Mould Industry

摘　　要：以转角结构作为研究对象,通过改变塑件几何结构尺寸,利用Moldflow软件对塑件成型工艺过程进行模拟。在相同的成型工艺参数下,研究了手指效应、气道穿透长度、熔接痕等气辅成型质量主要参考指标受塑件结构影响的规律,发现通过改变基板的厚度使气道两侧基板中熔体的流动平衡,可以减少气体的薄壁穿透,缩短熔接痕的长度,改善了塑件的成型质量。The effect of different geometric dimension of outer corner structure on the injection forming performance was researched. The Moldflow software was applied to simulate the forming process. The influencing rules of the outer corner structure dimension on the major quality parameters such as finger effect, gas passage penetration length and melting-joint mark under the same technological processing parameters were investigated. The study showed that the modification of the base plate thickness can ensure the equilibrium flow of molten mass in the both sides base plate of gas passage. It can also decrease the penetration of gas through thin wall plate and shorten the melting-joint mark length, thus improve the forming quality of plastic parts.

关 键 词：气体辅助注射成型 MOLDFLOW 转角结构 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业] O242.21[理学—计算数学]