Automatic resistance welding machine and control method

The invention belongs to the technical field of welding, and particularly relates to an automatic resistance welding machine which comprises an electrical control cabinet, an upper protective cover is arranged on the upper surface of the electrical control cabinet, and an industrial personal computer host, a compressed air inlet, a power interface and a cooling fan are arranged on the outer wall of the electrical control cabinet. Through cooperation of the feeding bin, the discharging bin and the feeding and discharging conveying mechanism, a tray and a sensor shell on the tray can be fed and discharged, the mechanical arm is used in cooperation, the operation efficiency is high, the output end of the mechanical arm is connected with the two transfer pneumatic clamps, the two transfer pneumatic clamps can be matched with each other, welding is conducted through one operation, and the welding efficiency is improved. Therefore, the overall efficiency is improved. The visual inspection machine is combined for us