中国塑料 ›› 2022, Vol. 36 ›› Issue (12): 127-132.DOI: 10.19491/j.issn.1001-9278.2022.12.018

• 机械与模具 • 上一篇    下一篇

汽车C柱左下护板顺序阀热流道倒推注塑模设计

张维合1(), 邓成林2, 张艳华1, 胥永林1   

  1. 1.广东科技学院,广东 东莞 523000
    2.东莞市模人科技有限公司,广东 东莞 523000
  • 收稿日期:2022-07-27 出版日期:2022-12-26 发布日期:2022-12-20
  • 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:
    年东莞市工程技术研究中心专项《现代模具设计与制造工程技术研究中心》;广东科技学院创新强校工程项目《汽车注塑模具关键技术研究》(GKY?2019CQYJ?12)

Design of fixed demoulding injection mould with sequential valve gating hot runner for door cladding under C⁃pillar of car

ZHANG Weihe1(), DENG Chenglin2, ZHANG Yanhua1, XU Yonglin1   

  1. 1.GuangDong University of Science & Technology,Dongguan 523000,China
    2.DongGuan Moren Technology Co,Ltd,523000,China
  • Received:2022-07-27 Online:2022-12-26 Published:2022-12-20

摘要:

根据汽车C柱左下护板的结构特点,设计了一副大型薄壁顺序阀控制的热流道注塑模具。模具采用动模成型外表面,定模成型内表面的倒推模结构,保证了成型塑件外观要求。模具采用双推杆和辅助杆斜顶侧向抽芯机构,解决了斜顶抽芯面积大、抽芯力大以及倾斜角度大的脱模难题。模具采用“直通式水管+倾斜式水管+隔片式水井”近乎随形水路的温度控制系统,水路布置均匀,模具冷却均衡充分,注射周期缩短了约15 %,成型塑件尺寸精度达到了MT3(GB/T 14486—2008)。

关键词: 汽车C柱左下护板, 顺序阀热流道, 倒推模, 双推杆斜顶, 辅助杆斜顶

Abstract:

According to the structural characteristics of the door cladding under C⁃pillar of car, a thin⁃wall injection mold with a sequential valve gating (SVG) hot runner was designed. The appearance of the molded plastic part meets the design requirement by employing the mold structure of the outer surface formed by the dynamic mold and the inner surface formed by the fixed mold. The demoulding problem with a large area, a large force and a large inclination angle of inclined top core pulling was solved by using a double guide rod and an auxiliary rod inclined top lateral core pulling mechanism. The mold adopted a temperature control system based on the straight through water pipe, inclined water pipe, and spacer well, which is close to the shaped water path. The water path was evenly arranged, the mold cooling was balanced and sufficient, the injection cycle was shortened by about 15 %, and the molded plastic parts reached a dimensional accuracy matching the standard of MT3 (GB/T 14486—2008).

Key words: door cladding under C?pillar of car, hot runner with sequential valve gating, fixed mold demoulding, oblique rod with double guide rod, oblique rod with auxiliary rod

中图分类号: