Combined winding reel with trapezoidal groove structure

The utility model relates to the technical field of winding, and discloses a combined type winding reel with a trapezoid groove structure, which comprises a reel body, the reel body is composed of a first half shell and a second half shell, triangular protruding parts are arranged on two sides of the outer wall of the reel body, the outward side of each protruding part is perpendicular to the outer wall of the reel body, the inward side of each protruding part is provided with an inclined part, and the inclined parts are arranged on the first half shell and the second half shell. A trapezoidal groove structure is formed at the circumferential outer end of the cylinder body; one end of the first half shell is provided with a first limiting sliding rail and a first limiting sliding groove, and one end of the second half shell is provided with a second limiting sliding groove capable of being movably connected with the first limiting sliding rail and a second limiting sliding rail capable of being movably connec