汽车内饰把手气辅注射成型模具设计  

Design of Gas-assisted Injection Molds for Car Interior Door Handles

作　　者：杜林芳[1] 苗秋玲[1] 

机构地区：[1]河南机电职业学院机械工程学院,河南郑州451191

出　　处：《中国塑料》2017年第4期102-105,共4页China Plastics

摘　　要：采用满射型逆吹式气辅成型技术,对汽车内饰把手进行了模具设计。在溢料槽结构设计中,通过增设切断阀和使用热流道针阀式喷嘴,改善了溢料效果,克服了以往逆吹式气辅成型的缺点。浇口采用牛角式潜伏浇口,并通过合理选择顶出位置,保证了产品外观无浇口与顶出痕迹。该模具成型出的产品表面无缩痕,获得了良好的外观品质,较同类产品质量减轻了20%。An injection mould for a car interior handle was designed by using an inverse blowing gasassisted molding technology in a full injection mode.When designing the groove structure for melt overflow,cut-off valve and hot runner nozzle were introduced into the mould so as to improve the efficiency of melt overflow and also to overcome the defects appearing in the inverse blowing gasassisted molding.With the use of a horn-shape latent gate and the reasonable setting of ejection position,the aspects without any gate and ejector marks were guaranteed for the injection-molded parts.This mould has been used for the production of parts,and the products exhibit a good appearance as well as a lightweight feature with a reduction in weight by 20 % compared with the similar products.

关 键 词：逆吹式 气辅成型 溢料槽 切断阀 缩痕 

分 类 号：U466[机械工程—车辆工程] TQ320.52[交通运输工程—载运工具运用工程]