Machine for forming filter bags for infusion products

A machine for making filter bags for infusion products starting from pieces of filter material each having two free ends and a intermediate portion, between each free end and the intermediate portion having, respectively, two chambers containing a corresponding dose of product;

• the pieces advancing along a feed line, comprising:
• a first carousel for continuous rotary movement about a first axis of rotation and having a circumferential surface extending parallel to the first axis of rotation;
• a plurality of first gripping means positioned along, and continuously movable with, the first movement carousel, each first gripping means being configured for holding a respective piece of filter material being formed;
• the plurality of first gripping means being distributed and equidistant along the entire circumference of the first carousel and positioned on the circumferential surface of the first carousel;
• a plurality of first operating stations positioned along, and continuously movable with, the first movement carousel, each first operating station being associated with a corresponding first gripping means and being configured to operate on the piece of filter material in order to form, at least partly, a filter bag along at least one predetermined angular stretch of rotation of the first movement carousel;
• the plurality of first operating stations being distributed and equidistant along the entire circumference of the first carousel and positioned on the circumferential surface of the first carousel;
• and
• a plurality of first translation devices, associated with the first movement carousel and configured for translating corresponding first gripping means along a direction parallel to the first axis of rotation of the first movement carousel to bring the corresponding first gripping means to the respective pieces of filter material at least for a stretch of the feed line;
• the plurality of first translation devices being distributed and equidistant along the entire circumference of the first carousel;
• each translation device being positioned, at least partially, on a corresponding operating station, to define at least a part of the gripping means.