Robot automatic feeding and discharging system in friction welding

An automatic robot feeding and discharging system in friction welding comprises a robot fixedly installed beside friction welding equipment, a discharging frame of workpieces A is arranged beside the robot, inserting holes arranged in an array mode are formed in the discharging frame, the workpieces A are inserted into the inserting holes, a chain plate type elevator is further installed beside the robot, workpieces B are arranged through the chain plate type elevator, and the workpieces B are conveyed to the robot through the chain plate type elevator. Two inclined plane sliding plates are connected to the upper end of the chain plate type elevator, the ends, close to the chain plate type elevator, of the inclined plane sliding plates are high, the ends, away from the chain plate type elevator, of the inclined plane sliding plates are low, material blocking plates are installed at the tail ends of the inclined plane sliding plates, workpiece detection switches are arranged on the material blocking plates, an