Winding device 2

Input: pink shaft to which the yellow spool is fixed.
The blue shaft of helix grooves receives rotation through the belt drive.
The green round nut moves the wire along the length of the spool to perform the helical winding.
The key element is the red swing slider pivoted inside the nut and moves along the helix grooves of the blue shaft.
This device ensures that the turns per length unit of the wire on the spool is constant.
This device ensures that the number of wire turns per unit length (TPI) on the spool is constant.
The TPI can be changed with different gear ratios of the belt drive.
Pw = Ps*(Dw/Ds)
here
Pw: pitch of the wire on the spool (yellow)
Ps: pitch of the screw thread (blue)
Dw: diameter of the small pulley (pink)
Ds: diameter of the large pulley (blue)

STEP files of this video:
https://www.mediafire.com/file/b1hkc8...
Inventor files of this video:
https://www.mediafire.com/file/u3rm1c...