Argon arc welding assembly line of hydraulic valve shell and operation method

The invention discloses an argon arc welding assembly line of a hydraulic valve shell and an operation method, and relates to the technical field of welding equipment. The device comprises a positioning tray, a welding robot, a double-shaft positioner, a transfer platform, a grinding machine, accurate grinding equipment, an automatic conveying sliding table and a carrying robot. The positioning tray is used for placing a hydraulic valve shell; the welding robot is used for welding the welding part of the hydraulic valve shell; the double-shaft positioner is matched with the welding robot to adjust the posture of the hydraulic valve shell; the transfer platform is used for temporarily placing the hydraulic valve shell when the hydraulic valve shell is turned over; the grinding machine is used for grinding craters of the hydraulic valve shell; the accurate grinding equipment is used for performing reference surface accurate grinding on the hydraulic valve shell; the automatic conveying sliding table conveys and