一字型布局的四腔注射模充模平衡设计  

Balance design of four-cavity injection mold filling with linear layout

作　　者：熊毅[1,2] 刘清文 XIONG Yi;LIU Qingwen(Henan Polytechnic Institute,Nanyang 473009,CHN;Henan Material Forming Equipment Intelligent Technology Engineering Research Center,Nanyang 473009,CHN)

机构地区：[1]河南工业职业技术学院,河南南阳473009 [2]河南省材料成形装备智能技术工程研究中心,河南南阳473009

出　　处：《制造技术与机床》2021年第4期121-125,共5页Manufacturing Technology & Machine Tool

基　　金：2021年河南省科技攻关计划项目(212102210372)。

摘　　要：针对圆形盒盖内部有对称侧凸、内顶面有加强筋的难题,设计了弯销抽芯机构,以解决侧型芯和产品干涉的问题。由于产品两侧均有抽芯机构,将一模四腔布局为一字型以减小模具周界尺寸,但带来了浇注系统不平衡的问题。通过改变流道布局,平衡了浇注系统,通过CAE对比分析,平衡式的流道在充填时间差、压力差、温度差等指标明显降低,充模一致性大幅度提升。最后,设计了拉断点浇口、脱流道、主分型、产品推出共4个分型面,优化了模具整体结构,省去了推出空间,减小了模具厚度。In order to solve the problem of symmetrical scoliosis and reinforcing rib on the inner top of the circular box cover,a dog-leg cam mechanism was designed to solve the problem of interference between the side core-type and the product.Due to the dog-leg cam mechanism on both sides of the product,the layoutof the 4-cavity of a mold is arranged as a font to reduce the perimeter size of the mold,but it brings the problem of unbalanced filling system.By changing the runner layout,the pouring system is balanced.Through CAE comparative analysis,the filling time difference,pressure difference,temperature difference and other indexes of the balanced flow channel are significantly reduced,and the filling consistency is greatly improved.Finally,four parting surfaces are designed,including the pull point gate,eject the runner,the main parting and the product release,which optimizes the overall structure of the mold,saves the space for the parting and reduces the thickness of the mold.

关 键 词：圆形盒盖 弯销 一字布局 浇注系统平衡 分型面 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]