Automated equipment for U shape shell metal forming of refrigerator
                                         LI Cheng xiang1, LIU Ding yi2, ZHANG Xin yu2, ZHANG Yao lei1, JIN Yi2
（1.Research and Development Center, China Academy of Launch Vehicle Technology, Beijing 100076, China;2.Capital Aerospace Machinery Company, Beijing 100076, China）


Abstract: Aiming at the low efficiency and poor quality of traditional sheet metal forming, 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 described. Using the multi roll forming method, the complex groove forming was realized. Using the suction cup type pneumatic unloading manipulator, the smooth unloading of large sheet metal parts was realized. Using Profibus DP technology and Siemens S7 300 PLC, the automatic control principle of the production line was designed, the automatic production of production equipment was realized. The practical results 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.
Key words: automated equipment; structural design; sheet metal forming