中国塑料 ›› 2025, Vol. 39 ›› Issue (10): 129-134.DOI: 10.19491/j.issn.1001-9278.2025.10.020

• 机械与模具 • 上一篇    

汽车收纳盒塑件注塑模具设计

赵利平(), 杨展朋, 陈盈华, 程煜, 黄启烨, 秦瑞亮   

  1. 广东科技学院机电工程学院,广东 东莞 523083
  • 收稿日期:2025-03-10 出版日期:2025-10-26 发布日期:2025-10-21
  • 作者简介:赵利平(1982—),模具制造工高级技师、机械工程副教授,从事模具设计及制造、机械设计制造及机械零件加工等研究,273725342@qq.com
  • 基金资助:
    广东科技学院实验教学示范中心(GKZLGC2024350)2022NLTS057)

Injection mold design for an automotive storage box plastic part

ZHAO Liping(), YANG Zhanpeng, CHEN Yinghua, CHENG Yu, HUANG Qiye, QIN Ruiliang   

  1. School of Mechanical and Electrical Engineering,Guangdong University of Science and Technology,Dongguan 523083,China
  • Received:2025-03-10 Online:2025-10-26 Published:2025-10-21

摘要:

针对某品牌汽车收纳盒塑件的独特形状特征与严格的工艺要求,开展了复杂塑胶模具的设计研究。为了满足该塑件的高精度品质需求,采用单型腔结构与侧浇口进胶方案,并设计了模架平衡装置以保障模具运行平稳性。通过对比分析两种差异化设计方案,确定了最优分型面位置,并采用了两次分型结构与超大行程两次抽芯结构。首次分型采用定距优先开模(PL1)设计,该机构具备双重技术优势:其一,通过提前脱出定模芯镶针,有效避免了塑件黏附于定模的问题;其二,鉴于抽芯块承受较大的包紧力,先利用传统斜销驱动结构进行初步抽芯,使抽芯块与塑件有效分离,随后再通过油缸驱动完成第二次抽芯,实现倒扣出模。这种抽芯设计不仅确保了油缸在第二次抽芯过程中的稳定性,还显著提升了生产效率和产品品质。

关键词: 汽车收纳盒, 分型面, 定距优先开模, 抽芯机构, 油缸, 模架平衡装置

Abstract:

This study presents the design of a high⁃precision injection mold for a complex automobile storage box component. To meet the part's strict technological requirements, a single⁃cavity structure and a tailored gating scheme were adopted, complemented by a dedicated mold balancing device for smooth operation. Two design schemes were compared to determine the optimal parting surface location, resulting in a two⁃parting⁃plane structure and a long⁃stroke, two⁃stage core⁃pulling system. The first parting plane (PL1) offers two key advantages: firstly, it facilitates the early removal of the fixed mold core insert to prevent the part from adhering to the stationary side; secondly, it employs an angled pin mechanism for the initial breakaway of the core to overcome high pellet packing forces. A hydraulic cylinder then executes a second core⁃pulling stage to achieve reverse withdrawal. This approach guarantees cylinder stability during the final ejection phase, leading to marked improvements in both production efficiency and product quality.

Key words: automobile storage box, type surface, spacing priority opening, core extraction mechanism, cylinder, die balancing device

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