Cutting unit for separating one or more bundles wrapped with a continuous wrap

A cutting unit for separating one or more bundles wrapped with a continuous wrap or for cutting a flat film in dynamic transit, comprising a load-bearing structure which operatively supports:

• two eccentric wheels, wherein said two eccentric wheels are hinged on opposite sides of the load-bearing structure and comprise an outer crown element and an eccentric central plate, the outer crown element being idly coupled to the eccentric central plate;
• a heated cutting wire having two ends, the cutting wire being fixed at the two ends onto said outer crown element by pins, at a first circumferential portion of said eccentric wheels;
• a tensioning wire having two ends and comprising an elastic compensation element along a length of the tensioning wire, the tensioning wire being fixed at the two ends onto said outer crown element by pins, at a second circumferential portion of the eccentric wheels, so that an arc of a circle between the pins of the first circumferential portion and the pins of the second circumferential portion is less than 180°;
• wherein said eccentric central plate of said eccentric wheels is eccentrically fixed to a respective shaft, which is fixed to a respective actuation pulley, said actuation pulleys being continuously and synchronously rotated to impart to said eccentric wheels an alternate motion component in a plane substantially perpendicular to a surface to be cut of said continuous wrap or flat film, between an engagement position with said continuous wrap or flat film, and a disengagement position from said continuous wrap or flat film.