Patent ID: 8783144

Claim:
A waste stripping unit for a packaging production machine, the waste stripping unit positioned downstream along a path of substrates after a cutting unit for cutting the substrates, the waste stripping unit comprising: a frame; two rotary tools supported by the frame for cooperating with one another, at least one of the two tools including a mandrel and a removable sleeve, the removable sleeve being removably inserted on the mandrel and fixed on the mandrel, and the removable sleeve is driven in rotation by rotation of the mandrel; a front bearing for at least one of the two tools, the front bearing being movable between a first position that allows extracting the sleeve from the mandrel and a second position that retains the sleeve on the mandrel; and a rotation shaft for the at least one of the two tools; an arm comprising one end supporting the front bearing at the one end of the arm, the arm sliding transversely to the path of the substrates and pivoting between a locking position locking the rotation shaft of the tool and a releasing position releasing the rotation shaft of the tool enabling extraction of the sleeve from the mandrel, and vice-versa.