1.河南机电职业学院智能工程学院，郑州 451191； 2.郑州大学材料科学与工程学院，郑州 450001
Design of Arc Core-pulling Injection Mould for Bridge Elbow based on UG and Moldflow
Li Wei1, Zhang Xiaoli2
1. School of Intelligent Engineering, Henan Mechanical and Electrical Vocational College, Zhengzhou 451191, China; 2. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
Abstract：According to the structural characteristics of the bridge elbow and the curvature of the inner hole of the elbow, a bidirectional opening arc core-pulling mechanism was designed. According to the characteristics of large arc core-pulling structure block and long core-pulling arc line, the connection form of hexagonal prism axis structure was adopted for ensuring the coincidence of rotation center and driving center of the arc core-pulling mechanism. The transmission form of rack and pinion which can achieve the precise and reliable action process of the arc core-pulling mechanism was introduced. The fully automatic injection molding production process of the bridge elbow was realized through being drove by the hydraulic cylinder. In order to ensure the correct position of the product during the arc core-pulling process, the flange washers were designed at both ends of the product. By analyzing with the Moldflow, the gating system of edge gate which can fill the cavity quickly and completely was used. By adding a flat structure at the end of the product, enough position of the ejector was left to ensure the product with traceless ejection and good appearance. The first-time success rate of mould design was improved greatly by using UG software to simulate motion process of the arc core-pulling mechanism throughout the design process.
Keywords：bridge elbow; arc core-pulling; pinion; rack; traceless ejection; UG; Moldflow
Li Wei，Zhang Xiaoli. Design of arc core-pulling injection mould for bridge elbow based on UG and Moldflow[J]. Engineering Plastics Application，2021，49(8)：93-98.