半空心铝型材一模双孔导流式挤压模结构

Flow-guided extrusion die with twin cavities for semi-hollow aluminum profiles

针对半空心铝型材的挤压生产,提出一种一模双孔导流式挤压模结构。结合实例介绍了这种结构模具的有关参数的选择与优化方法。主要包括分流孔的设计、分流桥的结构和工作带的选择。提出了模具强度的校核方法。根据挤压生产结果,将这种新的双孔模结构与传统的平面模、单孔分流模进行了对比。该模具具有结构简单、容易加工的特点。使用结果表明,这种一模双孔导流式挤压模结构,能有效地提高生产效率、降低成本,是值得推广的。

A structure of flow-guided extrusion die with twin cavities is put forward for the production of semi-hollow aluminum profiles. Parameter selection and optimization methods of the die are introduced with examples, mainly including the design of portholes, structure of bridges and selection of bearings. It is also stated how to check the die strength. Based on the extrusion results, the comparison is conducted on the conventional solid die, the porthole die with a single cavity and the new structure with twin cavities. It is found that the new structure is simple and easy to fabricate. After being used for a period, this new structure is proved to be production efficient, cost effective and worth popularization.