保险杠模具自动翻转清洗系统结构设计及有限元分析

Structural Design and Finite Element Analysis of Automatic Turnover and Cleaning System for Bumper Mold

针对汽车保险杠搪塑模具进行强腐蚀性药液清洗过程中的安全和效率问题,设计了一套模具自动翻转清洗系统。首先,根据清洗工艺和设计要求,规划整体结构并设计翻转单元;然后,结合翻转台重心变化分析,计算扭矩最大值为825Nm,推导驱动电机的扭矩范围(1.545~2.575)Nm,并阐述了盖板提升的结构和原理;采用ANSYS对旋转轴和卡紧支架进行强度校核,确定安全系数为5.2和5.4;最后,整体系统在工程现场进行应用实验。研究结果表明:该系统的应用将保险杠模具清洗过程的生产效率提高了44%,并保证了作业人员的安全。

Aiming at the problems of safety and efficiency in the process of cleaning slush mold of car bumper with strong corrosive medicinal liquid,a system that can turn and clean the bumper mold automaticaly was designed. Firstly,the integral structure and rotating unit were designed based on the cleaning process and design requirement. Then,combined with the analysis on the change of the gravity center of rotating unit,the maximum torque is 825 Nm and the torque range of drive motor is(1.545~2.575)Nm by calculation. After that,the structure and principle of lifting flat unit was described. Finite element method was used to check the static strength of the rotating shaft and clamping structure by ANSYS software,the results showed that the safety factor are 5.2 and 5.4. Finally,the entire sturcture was applied and experimented at the industrial site. The results indicate that the application of the system can increase production efficiency of clearing bumper mold by 44%,and ensure the safety of the workers.