
第44差,第5期 2016年5月
doi:10.3969/j.issn.1001-3539.2016.05.016
程塑料应用工
ENGINEERING PLASTICS APPLICATION
Vol.44, No.5 May 2016
汽车暖风机下壳体CAE优化与模具设计
张建卿
(怀化职业技术学院,湖南怀化418000)
摘要:针对轿车暖风机下壳体侧壁多且深、细小筋位较多等复杂结构特征,结合CAE技术进行了3种流注系统方案的优化分析,确定了最优的注塑成型工艺方案:模具结构为两板式热流道一模一腔结构,产品的税模包括型腔前结构设计和改进:模具结构设计合理
关键词:CAE分析:优化:模具结构:脱模
中图分类号TQ320.66.2
文献标识码:A
文章编号:1001-3539(2016)05-0065-05
Mould Design and CAE Optimization forAutomobile Heater Under-shell
Zhang Jianqing
(Huaihua Vocational and Technical College, Huaihua418000, China)
65
Abstraet : According to complicated structure characteristics of automobile heater under-shell with numerous and deep side wall and lots of fine rib etc., three kinds of gating systems for optimization were analyzed combined with CAE technology, so the optimal scheme of injection molding was given, mould structure was designed with two plate hot runner mold and cavity layout designed with one molud one cavity mode, the product of demoulding included two ways of cavity demoulding and core demoulding. In the design, the software Moldflow2015 was used for injection molding process optimization analysis, and UG software plug-in HB_Mould6.6 was used for structure design and improvement, mould structure design was reasonable
Keywords : CAE analysis ; optimization ; mold structure ; demoulding
轿车暖风机下壳体为轿车暖风机的装配基础壳体,安装于汽车发动机机仓暖风机支架上,模具设计时存在以下潜在间题:1)结构复杂,侧壁薄壁多且深度大,细小筋位及较深的卡柱位等易导致注塑时末端难充填,形成生产上的“死模”;2)内外侧壁上形状不一的复杂侧孔多,脱模困难。因此,采用传统模具设计方法所需设计周期长、不确定性因系多、成型质量难以得到稳定的保证。针对此实际生产间题,笔者拟运用Moldflow2015先进行模流分析,而后结合模流分析结果,运用UG及其外挂
HB-Mould6.6进行模具的结构设计。产品结构分析
产品结构图如图1所示,产品结构位及落口位置见图2。模具要求1模1腔,材料为聚丙烯(PP)-T20,颜色为黑色,产品表面火花纹细纹,表面处理要求为注塑后即可使用
(1)产品外形周围基本尺寸267mm×311mm x164mm,平均壁厚1.8mm;其基本特征构成如下。
B-B 4-4
267
图1产品结构图
*湖南省教育厅资助项目(13C1170)
联系人:张建即,硕士,副教授,研究方向为材料成型与控制收稿日期:2016-02-22