U形冰箱门壳钣金成型自动化设备研究

Automated equipment for U-shape shell metal forming of refrigerator

针对传统钣金成型生产效率低、产品质量差的问题,在对U形冰箱门壳的产品成型工艺路线分析基础上,设计了轧辊成型工位、打Z工位和下料机械手工位的机械结构。提出了主要工位的作业动作流程,阐述了电气控制系统的工作原理;采用多组辊轮渐变成型方式,实现了复杂槽型的成型;采用吸盘式气动下料机械手方案,完成了大尺寸钣金件的平稳下料;采用Profibus-DP总线技术和西门子S7-300PLC,设计了生产流水线自动控制原理图,实现了生产设备的自动化生产。研究结果表明:设备生产节拍不大于35 s/套,废品率低于0.1%,产品外观美观,尺寸精度满足使用要求。

Aiming at the low efficiency and poor quality of traditional sheet metal fomling, based on the analysis of the product forming process route of the U-shape refrigerator shell, the mechanical structure of the roll forming station, the Z forming station and the unloading manipulator station was designed, the operation procedure of main station was proposed, the principle of electrical control system was de- scribed. Using the nmlti-roll fomling method, the complex groove fomling was realized. Using the suction cup type pneumatic unloading ma- nipulator, the smooth unloading of large sheet metal parts was realized. Using Profibus-DP technology and Siemens S7-300 PLC, the auto- marie control principle of the production line was designed, the automatic production of production equipment was realized. The practical re- suits show that the equipment produces a product not more than 35 seconds, the rejection rate is less than 0.1% and the appearance of the product is beautiful, the dimension precision meets the use requirement.