Machine and method to manufacture tubular elements with the shape of a truncated cone, in particular, of the tobacco industry

A manufacturing machine (8) for manufacturing tubular elements with the shape of a truncated-cone, provided, at an end, with a filter (2);

• the manufacturing machine (8) comprising:
• a first transport conveyor (22), which is provided with a number of first seats (30), each designed to receive a respective tubular element (1), which feeds the first seats along a conveying path and in which the first seats (30) are divided into first sets (S), each comprising a predetermined number of the first seats (30);
• a loader (33) having a plurality of second seats (34), wherein each of the second seats (34) is designed to house, on an inside, a first number (n3) of the tubular elements (1) stacked one inside the other to form a row of the tubular elements (1);
• first insertion station (S11), arranged along the conveying path and in which the tubular elements (1) housed inside the first seats (30) of one of the first set (S) are simultaneously transferred inside the respective second seats (34);
• a packing conveyor (37), which moves tubular packs (36) along a packing path (P6);
• a second insertion station (S14), arranged along the packing path (P6) in which the row of the tubular elements (1) contained in each of the second seats (34) is transferred from the loader (33) to the tubular pack (36);
• and
• wherein the loader (33) is movable from the first insertion station (11) arranged along the conveying path to the second insertion station (S14) arranged along the packing path (P6).