碎纸机收纳桶塑件的注塑模具设计  

Design of injection mould for paper shredder storage barrel plastic parts

作　　者：姜炳春[1] 李振豪 赵利平[1] JIANG Bingchun;LI Zhenhao;ZHAO Liping(School of Mechanical and Electrical Engineering,Guangdong University of Science and Technology,Dongguan 523083,China;School of Dongguan Electrical and Mechanical Engineering,Dongguan 523846,China)

机构地区：[1]广东科技学院机电工程学院,广东东莞523083 [2]东莞市机电工程学校,广东东莞523846

出　　处：《工程塑料应用》2024年第9期104-111,共8页Engineering Plastics Application

基　　金：教科创教学相长项目化团队项目(GKJXXZ2023026);“节能减排”创新团队项目(GKY-2022CQTD-1);东莞市现代模具设计与制造工程技术项目(20221600402242)。

摘　　要：根据碎纸机收纳桶产品的外形特征与成型要求,设计了一副包括定模隧道滑块油缸抽芯机构、推板带斜顶抽芯机构、斜顶内带司筒和弹针顶出结构的复杂注塑模具。其中,推板带斜顶抽芯机构用于脱出塑件内观面上的两个倒扣,斜顶内带司筒和弹针顶出结构成功解决塑件内部的4个柱子倒扣的脱模问题,设置的定模隧道滑块油缸抽芯机构用于脱出塑件外观面上的倒扣。推板带动斜顶抽芯的同时完成塑件的顶出,在模具结构上省去了顶针板结构。模具在制作调试过程中,各项顶出抽芯机构无干涉,针对塑件成型时易出现的问题,通过进一步的模具结构优化设计加以解决。在模具投入使用后,已生产塑件产品达3万件,塑件尺寸精度及外观质量要求符合预期。A complex injection mould was designed based on the appearance characteristics and molding requirements of a paper shredder storage barrel,which included a oil cylinder core pulling mechanism of tunnel slider in fixed mould,a ejector plate with angular lifter core pulling mechanism,an angular lifter with ejector sleeve and pogo pin structure.The ejector plate with angular lifter core pulling mechanism was used for demoulding the two undercuts on the inner view surface of the plastic parts.The angular lifter with ejector sleeve and pogo pin structure successfully solved the demoulding problems of four pillar undercuts inside the plastic parts.The oil cylinder core pulling mechanism of tunnel slider in fixed mould was used for demoulding the undercuts on the appearance surface of the plastic parts.The ejector plate drove the angular lifter for core pulling while simultaneously pushing out the plastic parts to complete the ejection,eliminating the need for a ejector retainer plate structure in the mould structure.During the production and debugging process of the mould,there was no interference in the various ejection and core pulling mechanisms.Further optimization design of the mould structure was used for solving the common problems that may arise during plastic molding.After the mould was put into use,30000 plastic parts had been produced,and the dimensional accuracy and appearance quality requirements of the plastic parts could meet expectations.

关 键 词：碎纸机 抽芯机构 推板机构 油缸 斜顶内司筒顶出结构 弹针结构 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]