Automatic wheel changing equipment for pay-off rack of water tank wire drawing machine

The utility model relates to the technical field of metal processing, and discloses an automatic wheel changing device for a pay-off rack of a water tank wire drawing machine, which comprises a gas path system, a pay-off rack assembly and an AGV forklift, the gas path system is arranged on the left side of the pay-off rack assembly, and a pay-off stand column assembly is fixedly arranged on the upper side of the pay-off rack assembly; an air cylinder tip cone assembly is fixedly installed on the left side of the pay-off rack assembly, a transmission tip cone assembly is fixedly installed on the right inner wall of the pay-off rack assembly, a left limiting air cylinder is fixedly installed on the left side of the pay-off rack assembly, and after the spools are paid off, the air cylinder tip cone assembly on the left side retracts, the empty spools fall on a spool tray, and the left limiting air cylinder retracts; the right push-out air cylinder pushes the spool tray and the empty spool to the center area of t