Clamping device

A clamping device coupled to a former having a circumferential surface, wherein the circumferential surface includes a first winding groove and a second winding groove, the clamping device comprising:

• a clamp base coupled to the former, the clamp base including a first base wall and a second base wall;
• a moving body that is movable relative to the clamp base;
• a first clamp for clamping a distal end of a steel wire at a position corresponding to the first winding groove, the first clamp including a first clamp wall, wherein the steel wire corresponding to the first winding groove can be held between the first base wall and the first clamp wall;
• a second clamp for clamping a distal end of a steel wire at a position corresponding to the second winding groove, the second clamp including a second clamp wall, wherein the steel wire corresponding to the second winding groove can be held between the second base wall and the second clamp wall,
• wherein the first clamp wall and the second clamp wall are provided in the moving body,
• wherein the moving body is rotationally coupled to the clamp base,
• wherein the moving body is moved between a clamping position where the steel wire corresponding to the first winding groove or the second winding groove is held between the moving body and the clamp base and a non-clamping position where the steel wire corresponding to the first winding groove or the second winding groove is not held between the moving body and the clamp base, and
• wherein when the moving body is located at the non-clamping position, the first clamp wall and the second clamp wall are located at a lower position than the first base wall and the second base wall.