Machine and method for the winding of strips of web material with means for transversal cutting of the strips and anchoring of the strips to the winding core

A machine for forming spools of web material, comprising:

• an unwinding section for unwinding parent reels of web material;
• a cutting station arranged downstream of the unwinding section and comprising cutting members adapted to divide the web material coming from the unwinding section into longitudinal strips;
• a plurality of winding stations arranged in sequence downstream of the cutting station, each of which is adapted to receive a respective longitudinal strip;
• wherein each winding station comprises a winding device, to which the longitudinal strip of web material is fed, and in which a respective spool of web material is formed;
• the winding device being arranged and controlled to wind the longitudinal strip and to form the spool BY rotation around a rotation axis of the spool;
• wherein each winding device comprises a winding mandrel provided with a rotation movement around the rotation axis and with a reciprocating translation movement in a direction parallel to the rotation axis, so as to helically wind the longitudinal strip around the winding mandrel;
• and wherein each winding station further comprises:
• a strip cutting device for cutting the longitudinal strip transversally, thus forming a trailing edge, which remains on the spool under formation, and a leading edge;
• and a holding device for holding the leading edge of the longitudinal strip, to transfer the leading edge onto a tubular winding core of a new spool to be wound.