中国塑料 ›› 2024, Vol. 38 ›› Issue (12): 143-147.DOI: 10.19491/j.issn.1001-9278.2024.12.022

• 机械与模具 • 上一篇    下一篇

汽车左前门板热流道大型薄壁注塑模设计

张维合(), 冯婧, 赵利平, 胥永林, 闫丽静, 费强, 陶永杰, 陈卓航   

  1. 广东科技学院,广东 东莞 523000
  • 收稿日期:2024-02-28 出版日期:2024-12-26 发布日期:2024-12-25
  • 作者简介:张维合(1964-),男,教授,从事模具教学与研究,allenzhang0628@126.com
  • 基金资助:
    2022年东莞市工程技术研究中心项目(20221600402242);2023年度广东科技学院校级项目(GKY?2023KYZDK?12)

Design of large and thin⁃walled injection mold with hot runner for left⁃front door panel of vehicles

ZHANG Weihe(), FENG Jing, ZHAO Liping, XU Yonglin, YAN Lijing, FEI Qiang, TAO Yongjie, CHEN Zhuohang   

  1. GuangDong University of Science & Technology,Dongguan 523000,China
  • Received:2024-02-28 Online:2024-12-26 Published:2024-12-25

摘要:

针对汽车左前门板的尺寸大小、结构特点和工艺要求,设计了一副大型薄壁顺序阀控制的热流道注塑模具。模具喇叭网孔成型零件采用粉末冶金透气钢,有效消除了喇叭网孔中填充不良和熔接痕等成型缺陷。模具采用倾斜式导滑槽,有效解决了倾斜式内侧倒扣脱模难题。模具采用由顺序阀智能技术控制的热流道浇注系统,有效解决了汽车左前门板尺寸大壁厚小熔体填充难题。模具采用快速且均衡温度控制系统,注射周期缩短了约8 %,尺寸精度达到了MT3(GB/T 14486—2008)。

关键词: 汽车左前门板, 大型注塑模具, 顺序阀热流道, 侧向抽芯机构

Abstract:

In this study, a large injection mold with a sequential valve hot runner was designed for the left⁃front door panel of a vehicle, and the forming defects such as poor filling and fusion marks in the horn mesh were effectively eliminated by using the formed parts made of a type of powder metallurgy breathable steel. The problem in the inclined inner reverse buckle demolding was effectively solved by using an inclined guide groove. The difficulty in filling large mold cavities was effectively addressed by using a sequential valve hot runner control technology. The injection cycle was shortened by about 8 %, and the dimensional accuracy reached the MT3 level (GB/T 14486—2008) by using a fast and balanced temperature control system.

Key words: left?front hinten of car, large injection mould, sequential valve gate technology, the core pulling mechanism

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