Permanent magnet traction motor stator coil small end-to-end welding device and welding method thereof

The invention discloses a permanent magnet traction motor stator coil small end-to-end welding device which comprises a base, a wire feeding mechanism, a welding mechanism, a small end-to-end positioning mechanism and a control module, the wire feeding mechanism and the welding mechanism are both arranged on the base, and the small end-to-end positioning mechanism comprises a stator coil fixing disc, a notch positioning assembly and a rotation driving assembly. A plurality of notches are formed in the stator coil fixing disc in the circumferential direction, each notch corresponds to one small parallel head of the stator coil, the rotation driving assembly is used for driving the stator coil fixing disc to rotate, the notch positioning assembly is used for positioning the notches, and the wire feeding mechanism, the welding mechanism and the rotation driving assembly are all connected with the control module. The small end-to-end welding device for the stator coil of the permanent magnet traction motor is hig