Waste stripping unit with simplified tool change for a packaging production machine

A sleeve for use on a waste stripping unit, wherein the stripping unit is positioned downstream in a path of flat substrates from a cutting unit which is for cutting one or more of the flat substrates in a packaging production machine, wherein the sleeve is configured to be fixed on and driven in rotation by a mandrel, so that the sleeve and the mandrel together form a first rotary tool, the sleeve having a wall with an outer surface, the wall being provided with waste stripping needles, engaged in the wall and protruding radially outward from the outer surface of the wall, and the first tool being configured to cooperate with a second rotary tool having at least one strip made of a flexible material which is positioned to be engaged by the needles.

A sleeve for use on a waste stripping unit, the stripping unit is positioned downstream in a path of substrates from a cutting unit which is for cutting one or more of the flat substrates in a packaging production machine, wherein the sleeve is configured to be fixed on and driven in rotation by a mandrel, so that the sleeve and the mandrel together form a second rotary tool, the sleeve having a wall with an outer surface, the wall being provided with at least one strip made of a flexible material, the strip protruding radially outward from the outer surface of the sleeve, and the second tool being configured to cooperate with a first rotary tool provided with outwardly protruding waste stripping needles.

A waste stripping cassette for use in a waste stripping unit, the cassette being positioned downstream, along a path of substrates, from a cutting unit configured for cutting one or more of the flat substrates, in a packaging production machine, the cassette comprising a frame provided with bearings, two rotary tools, cooperating with one another and supported by the bearings, one of the tools having waste stripping needles protruding radially outward, the other of the tools having at least one strip made of a flexible material protruding radially outward, at least one of the two tools being formed with a mandrel and a removable sleeve on the mandrel, the sleeve being configured to be inserted on, fixed to and driven in rotation by the mandrel.

A first and a second sleeve for use on a waste stripping unit, wherein the stripping unit is positioned downstream in a path of substrates from a cutting unit which is for cutting one or more of the flat substrates in a packaging production machine;

• the first sleeve is configured to be fixed on and driven in rotation by a first mandrel, so that the first sleeve and the first mandrel together form a first rotary tool, the first sleeve having a first wall with an outer surface, the first wall being provided with waste stripping needles engaged in the first wall and protruding radially outward from the outer surface of the first wall, and the first sleeve is configured to cooperate with a second rotary tool;
• the second sleeve is configured to be fixed on and driven in rotation by a second mandrel, so that the second sleeve and the second mandrel together form a second rotary tool, the second sleeve having a second wall with a second outer surface, the second wall being provided with at least one strip made of a flexible material, the second strip protruding radially outward from the second outer surface of the second sleeve, the at least one strip made of a flexible material is positioned to not be engaged by the needles so that the second sleeve is configured to cooperate with the first rotary tool provided with outwardly protruding waste stripping needles.