中国塑料 ›› 2020, Vol. 34 ›› Issue (11): 81-85.DOI: 10.19491/j.issn.1001-9278.2020.11.014

• 机械与模具 • 上一篇    下一篇

含密集异型孔塑件的注塑模具设计

王静1, 刘雪敏2, 崔玉波1   

  1. 1.河南工程学院机械工程学院,郑州 451191
    2.郑州经贸学院土木建筑学院,郑州 450003
  • 收稿日期:2020-03-30 出版日期:2020-11-26 发布日期:2020-11-20
  • 基金资助:
    地址:北京市阜成路11 号 北京工商大学化学与材料工程学院聚合物发泡材料研究团队

Design of Injection Mold for Plastic Parts with Dense Shaped Holes

 WANG Jing1, LIU Xuemin2, CUI Yubo1   

  1. 1.College of Mechanical Engineering,Henan University of Engineering,Zhengzhou 451191,China
    2.ZhengZhou University of Economics and Business College of Civil Engineering and Architecture,Zhengzhou 450003,China
  • Received:2020-03-30 Online:2020-11-26 Published:2020-11-20
  • Contact: WANG Jing E-mail:361893924@qq.com

摘要:

针对具有密集异型孔的壳体类塑件,设计了一种利用后模镶件进行抽芯辅助二次顶出的模具结构。该结构中后模镶件采用锥度结构设计,在弹簧及限位拉杆的控制下,先将后模镶件从塑件中抽出,继而由顶针完成二次顶出动作,顺利解决了复杂密集异型孔的壳体类塑件不易脱模的问题。结果表明,模具结构布局合理,机构设计巧妙,动作可靠,有利于生产制造成本的降低,能为同类塑件的成型模具设计提供有益参考。

关键词: 注塑模具, 模具设计, 镶件设计, 二次顶出, 模具结构

Abstract:

Aiming at the shell plastic parts with complex narrow and porous structure, we designed a type of mould structure with core pulling and secondary ejection through the back die insert. In this structure, the rear die insert was designed with a taper structure. Under the control of spring and limit pull rod, the rear die insert was pulled out from the plastic part at first, and then the second ejection action was completed by a thimble. Such a design successfully resolved the demolding problem in the complex, narrow and porous shell plastic parts. The die structure layout is reasonable, the mechanism design is ingenious, and the action is reliable. This structure is advantageous for the reduction of production and manufacturing costs and therefore can provide a useful reference for the design of molding die of similar plastic parts.

Key words: injection mold, mold design, insert design, secondary ejection, mold structure

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