Motor iron core welding method

The invention discloses a motor iron core welding method, which belongs to the field of motors, and comprises the steps of stacking, pressing, real-time weld bead length detection, weld bead welding and the like, and by pressing stacked laminated iron cores, gaps among a plurality of iron core sheets are reduced, and the welding precision is controlled. The real-time lengths of different welding beads after pressing are detected at the same time, the position of a welding end point on the iron core sheet on the end face of each welding bead is calculated according to the detected real-time lengths of the welding beads and the thickness of the iron core sheet, the multiple iron core sheets are welded along the periphery of the laminated iron core, and the number of welding paths of each welding bead is at least two; an arcing point of one welding path is in the welding bead and an arcing point of the other welding path is at one tail end of the welding bead, an arcing point of the other welding path is in the