熔接线数值模拟在汽车保险杠注射模具设计中的应用  

Application of numerical simulation of weld lines in the car bumper injection mold design

作　　者：王伟[1,2] 盛丹[2] 蔡嘉盛[3] 周应国[2] 

机构地区：[1]江苏省特种设备安全监督检验研究院扬州分院,江苏扬州225003 [2]江苏科技大学材料科学与工程学院,江苏镇江212003 [3]江苏科技大学苏州理工学院镇江校区,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2013年第1期22-26,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：江苏省自然科学基金资助项目(BK2011519);江苏科技大学本科生创新计划基金资助项目

摘　　要：为较好设计汽车保险杠的注射模具,从聚合物注射过程中熔接线的形成机理对汽车保险杠的生产过程进行数值模拟.通过比较常规浇注系统中心浇口、四浇口和六浇口3种设计方案以及各自采用顺序控制技术时的熔体充填过程和锁模力需求,得出六浇口顺序控制技术不仅较大程度减少了机器的锁模力需求,而且能够有效控制制品熔接线的形成.通过调整各个浇口的顺序开启闭合时间,最终选出合适的设计方案,并顺利生产出合格制品.In order to design the injection mold for the car bumper,the formation of weld lines in injection molding of polymer is analyzed and the manufacturing procees of the car bumper is numerically simulated.The filling of melt and the requirement of the clamp force for three kinds of design methods,which includ central gate,four gates and six gates,in conventional feeding system and their sequence control technology are compared.The results show that not only the requirement of the clamp force is reduced obviously by using six gates sequence control technology,but also the formation of weld lines can be controlled effectively.Furthermore,the reasonable method of design is gained by adjusting the time for openning and closing of the gates and the eligible parts are manufactured.

关 键 词：注射 模具 浇注系统 熔接线 

分 类 号：TQ320.5[化学工程—合成树脂塑料工业]