Permanent magnet roller stator core and winding inserting method of stator core

The invention relates to the technical field of external rotor motors, and provides a permanent magnet roller stator core which comprises a plurality of stator punching sheets, stator windings wound on the stator punching sheets in an embedded mode, a first pressing plate and a second pressing plate, and the first pressing plate and the second pressing plate are installed on the stator punching sheets in a pressed mode. The stator punching sheet is provided with first outer teeth and second outer teeth, the first outer teeth and the second outer teeth form two stator grooves, the stator winding is arranged in the stator grooves, the stator winding is more convenient to install due to the fact that the stator punching sheet is provided with the two sets of stator grooves, each stator groove is provided with a set of opposite sides which are parallel, and the stator winding is more convenient to install due to the fact that the design of the double stator grooves is adopted. And the full slot rate is also impro