Automatic machine for making filter bags for infusion products

A machine (100) for making filter bags (1) for infusion products, the machine (100) being of the type comprising, one after the other along a production line (P), a plurality of operating stations designed to form the filter bags (1) and at least one operating outfeed station (7) for handling the filter bags (1) made;

• the operating outfeed and handling station (7) comprising:
• conveying means (8) designed to successively pick up and withhold the filter bags (1) along a certain section (T1) of the line (P);
• supporting guide means (9) along which an ordered and continuous succession of filter bags (1) is formed and fed along another section (T2) of the line (P);
• and
• means (11) for picking up and transferring the filter bags from the conveying means (8) to the supporting guide means (9);
• the machine (100) further comprising actuating means (12), positioned and operating at the supporting guide means (9) in such a way as to define a reference (1a) between two consecutive sets of a predetermined number of filter bags (1) in order to form respective groups (13) of filter bags (1) to be picked up from the supporting guide means (9);
• wherein the actuating means (12) comprise means (12) for lifting a predetermined filter bag (1a) with respect to the other filter bags (1) in order to define said reference, the actuating means (12) being located under the supporting guide means (9) and, when required, being operated upon by respective drive means (14) in such a way as to act on the bottom of the single filter bag (1) so that the latter moves upwards.