中国塑料 ›› 2024, Vol. 38 ›› Issue (11): 118-123.DOI: 10.19491/j.issn.1001-9278.2024.11.020

• 机械与模具 • 上一篇    

自动替换镶件的双色注塑模具设计

叶衔真1(), 荣星2(), 蔡部林3, 张维立1   

  1. 1.集美大学诚毅学院,福建 厦门 361021
    2.集美大学海洋装备与机械工程学院,福建 厦门 361021
    3.厦门部林科技有限公司,福建 厦门 361100
  • 收稿日期:2024-06-28 出版日期:2024-11-26 发布日期:2024-11-21
  • 通讯作者: 荣星(1965—),男,副教授,从事产品及模具设计加工、塑胶成型技术、数控技术的研究与应用,rongxinghb@163.com
    E-mail:124883086@qq.com;rongxinghb@163.com
  • 作者简介:叶衔真(1986—),男,讲师,从事产品开发及加工制造工艺研究与教学,124883086@qq.com
    第一联系人:地址:北京市海淀区阜成路11号《中国塑料》杂志社
    邮编:100048
  • 基金资助:
    厦门市科技补助项目资助(2022CXY0306);福建省高校产学合作项目(2021H6032)

Design of bi⁃color injection mold with automatic replacement of inserts

YE Xianzhen1(), RONG Xing2(), CAI Bulin3, ZHANG Weili1   

  1. 1.Chengyi College,Jimei University,Xiamen 361021,China
    2.College of Marine Equipment and Mechanical Engineering,Jimei University,Xiamen 361021,China
    3.Xiamen Bulin Technology Co,Ltd,Xiamen 361100,China
  • Received:2024-06-28 Online:2024-11-26 Published:2024-11-21
  • Contact: RONG Xing E-mail:124883086@qq.com;rongxinghb@163.com

摘要:

在双色注塑成型过程中,第一射成型的基体塑件滞留于子动模侧,并随子动模移动至第二射子定模处合模后完成第二射包胶成型。为解决在基体塑件背面(与动模型腔接触的面)进行第二射包胶问题,必须更换子动模相应部位的镶件;为此,通过控制模具开合模动作顺序,利用固定在第一射子定模侧的弯销带动动模滑块及镶件一起移动,实现第一射与第二射不同镶件之间的替换动作,再利用限位块、回位弹簧控制镶件伸出及回位。为防止开模时基体塑件粘附子定模型腔,在第一射的子定模侧设计了以氮气弹簧为主动力的顶出基体塑件机构。为保证自动替换镶件、顶出等机构安全、准确可靠地运行,设计了相应的保障机构。

关键词: 自动替换镶件, 保障机构, 定模顶出, 双色注塑模具

Abstract:

In the bi⁃color injection molding process, the first shot of the base plastic part remains on the movable mold side and moves with the movable mold to the stationary mold side of the second shot for a mold closing to complete the second shot of encapsulation molding. To address the issue of encapsulation molding on the back of the base plastic part with a side on the movable mold, it is necessary to replace the corresponding insert of the movable mold. To this end, through controlling the sequence of opening and closing actions of the mold, the movable mold slider and insert were moved together by a bent pin fixed on the stationary mold side of the first shot to obtain a replacement action between different inserts of the first and second shots. Then, the extension and retraction of the insert were controlled by limit blocks and return springs. To prevent the base plastic part from adhering to the stationary mold cavity during mold opening, a nitrogen spring⁃driven ejection mechanism for the base plastic part was designed on the stationary mold side of the first shot. To ensure the safe, accurate, and reliable operation of the automatic replacement of inserts, ejection, and other mechanisms, the corresponding safety mechanisms were designed.

Key words: automatic replacement insert, safety mechanism, fixed mold ejector, bi?color injection mold

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