Driving rectangular pyramid structure type coiler mandrel and using method thereof

The invention discloses a driving rectangular pyramid structure type coiler mandrel. The driving rectangular pyramid structure type coiler mandrel comprises a base, an installation column, bearing plates and a pressing and covering structure, the base is of a rectangular box-shaped structure, the installation column is of a rectangular column-shaped structure, the four sets of bearing plates are symmetrically installed on the outer side edge of the installation column, the outer side edges of the bearing plates are in a quarter fan shape, eight sets of adjusting cavities are symmetrically formed in the interior of the installation column, two sets of installation plates are symmetrically fixed to an extension rod, a pressing cavity is formed in one side edge, close to the installation plates, of the base, a first pressing structure is arranged in the pressing cavity, a matching groove is formed in one set of protruding blocks, close to the installation plates, of the base, and a secondpressing structure is ar