BigPatents India

A winder for winding synthetic continuous elastomeric filaments comprising: (a) a frame having a front face; (b) a support mounted on the face and perpendicular to the face; (c) a driven turret having an axis and being rotatably mounted on the face; (d) a first driven spindle assembly having an axis and a second driven spindle assembly, the spindle assemblies being rotatably mounted on the turret on opposite sides of the turret axis and being capable of having tubecores mounted thereon; (e) a freely rotatable contact roll having an axis and being mounted parallel to the first and second spindle assemblies and below a horizontal plane in which the turret axis lies; and (f) a traverse assembly comprising a traverse cam mounted axially parallel and adjacent to the contact roll so that filament passing the traverse assembly is capable of traversing back and forth along the contact roll, the traverse assembly and contact roll being mounted on a pendulous swing arm pivotably mounted on the support and capable of pivoting through at least 7°; wherein the turret, first and second spindle assemblies, swing arm, traverse assembly, and contact roll being are mounted in order that (i) rotation of the turret to a first indexed winding position is capable of urging a tube core mounted on the first spindle assembly against the contact roll for partial winding of a package; (ii) during rapid rotation of the turret to and between 1-4 subsequent indexed winding positions, the partially wound package on the first spindle assembly can remain in contact with the contact roll; (iii) rotation of the turret to a final position is capable of presenting the package on the first spindle assembly for doffing and is capable of urging a tubecore on the second spindle assembly against the contact roll for first position winding; (iv) a filament wrap angle around the Contact roll of 180° -225°; and (v) at least 99% of the winding occurs at the indexed positions.