电表端盖成型工艺分析及模具设计  

Analysis on forming process of electric meter end cover and the mould design

作　　者：刘昊 姜宏 江倩雯 刘艳云[3] 潘琦 LIU Hao;JIANG Hong;JIANG Qianwen;LIU Yanyun;PAN Qi(National Innovation Center of Mobile Energy(Jiangsu)Limited Company,Changzhou 213166,China;School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China;School of Mechanical and Electrical Engineering,Changzhou Vocational Institute of Textile and Garment,Changzhou 213164,China)

机构地区：[1]国创移动能源创新中心(江苏)有限公司,江苏常州213166 [2]江南大学机械工程学院,江苏无锡214122 [3]常州纺织服装职业技术学院机电学院,江苏常州213164

出　　处：《模具工业》2024年第3期40-47,共8页Die & Mould Industry

基　　金：江苏省重大共性技术研发项目(GC04C200001);常州市第十五批科技计划项目(CZ20210009)。

摘　　要：对某直流电表端盖的注射成型工艺及模具进行研究,确定成型工艺参数、分型面和侧抽芯结构,以改善塑件成型质量和解决开模问题。利用Moldflow软件对电表端盖的成型仿真进行建模,并分析塑件成型时间、压力、冷却及翘曲变形等,根据仿真结果优化充填工艺、冷却参数以及影响塑件翘曲的结构。优化后的端盖充填平衡,注射压力从180 MPa减少至86.7 MPa,翘曲变形量减少至0.645 mm,相比优化前降低了33%,塑件成型质量显著提高。根据优化结果设计端盖成型模,型芯与型腔设计成组合式镶件结构,采用斜导柱侧抽芯机构实现塑件侧面卡扣盲孔凹槽的成型及脱模。通过成型仿真协助开发注射模,能够提升塑件成型质量,加快模具研发进程。The injection moulding process and the mould of an electric meter end cover was re⁃searched to determine the moulding process parameters,parting surface,and side core pulling structure,and the moulding quality of the plastic parts was improved,and the mould opening prob⁃lems were solved.The Moldflow software was used to model the forming simulation of the meter end cover,and the moulding time,pressure,cooling,and warping deformation of the plastic parts were analyzed.Based on the simulation results,the filling parameters,cooling parameters,and structures that affect warping were further optimized.The optimized end cover was filled evenly,and the injection pressure was reduced from 180 MPa to 80.3 MPa,and the warping deformation was 0.645 mm,which decreased 33%compared to before.Finally,based on the optimization results to design the forming mould for end cover,the core and cavity were designed as a combined struc⁃ture,and a side core pulling mechanism with angle pin was used to achieve the formation and de⁃molding of the blind hole groove for the side buckle of the plastic part.Through moulding simula⁃tion assisting in the development of injection mould could improve the moulding quality of plastic parts and speed up the mould development process.

关 键 词：电表端盖 MOLDFLOW 注射成型 优化设计 模具设计 

分 类 号：TG76[金属学及工艺—刀具与模具] TQ320.52[化学工程—合成树脂塑料工业]