中国塑料 ›› 2021, Vol. 35 ›› Issue (5): 92-96.DOI: 10.19491/j.issn.1001-9278.2021.05.015

• 加工与应用 • 上一篇    下一篇

车用聚酰胺波纹管挤出成型工艺

庄玮()   

  1. 伊利诺易包装(青岛)有限公司,山东 青岛 266201
  • 收稿日期:2020-09-07 出版日期:2021-05-26 发布日期:2021-05-24

Extrusion Molding Technique of Automobile Polyamide Corrugated Tubular Product

ZHUANG Wei()   

  1. Signode Industrial Packaging (Qingdao) Co,Ltd,Qingdao 266201,China
  • Received:2020-09-07 Online:2021-05-26 Published:2021-05-24
  • Contact: ZHUANG Wei E-mail:Rain@163.com

摘要:

介绍了车用聚酰胺波纹管挤出成型工艺流程。分析了聚酰胺波纹管质量影响因素,主要包括原材料含水率、烘干时长、成型温度和速度、模具设计等。讲解了挤出模具直径的确定方法,重点是芯模外径的计算公式。综述了波纹管挤出成型的开机步骤和生产时的注意事项,以及气堵撑杆长度与模块数量的对应关系。强调了1.3 mm是最佳的波纹成型机模块游隙和40 ℃是模块必须控制的最高温度。阐述了波纹成型腔与口模对中的技巧和调整产品壁厚均匀的技巧。对波纹管挤出成型过程中常见的问题进行了总结,指出了质量缺陷的产生原因及解决方法。

关键词: 聚酰胺, 波纹管, 挤出成型, 生产工艺, 质量缺陷

Abstract:

This paper introduced the production technology for the extrusion molding of polyamide corrugated tubes and analyzed the factors affecting the quality of polyamide corrugated tubes. These factors include the raw material moisture content, drying time, molding temperature and speed, and mold design. The method for determination of the diameter of tube tools, and the calculation formula of pin diameter was emphasized. The start?up procedure of the extrusion molding, the precautions during production, and the correspondence between the length of support rod and the number of modules were described. To control the module, it was emphasized that the optimal mold cavity clearance and maximum temperature were determined to be 1.3 mm 40 °C. The technique for centering the molding cavity and die and the technique for adjusting the wall thickness of products were described. The common quality problems arising in the production were discussed and their solutions were analyzed.

Key words: polyamide, corrugated tube, extrusion molding, production technology, quality defect

中图分类号: