Wrapping machine

A wrapping machine for wrapping a load with a film or band of plastic and/or paper material, the wrapping machine comprising:

• a main frame;
• a supporting carriage slidably supported by said main frame and movable along a working direction;
• a moving ring rotatably supported by said supporting carriage and rotatable about a wrapping axis parallel to the working direction;
• an unwinding unit fixed to said moving ring and provided with a reel of film and pre-stretching rollers to unwind and pre-stretch the film;
• a sliding electric contact assembly for supplying electric current to, alternatively or additionally exchanging electric signals with, said unwinding unit, said sliding electric contact assembly comprising a brush assembly fixed to said moving ring and a conductive bar assembly fixed to a supporting ring connected to said supporting carriage, and in an operating configuration said brush assembly slidably abutting said conductive bar assembly to receive the electric current alternatively or additionally to exchange the electric signals,
• wherein said supporting ring is removably connected to said supporting carriage,
• wherein said conductive bar assembly comprises a plurality of annular conductive bars that are fixed parallel and adjacent to each other to an external side wall of said supporting ring, and
• wherein said brush assembly comprises a plurality of contacting brushes each of which is configured to slidably abut a respective one of said annular conductive bars.