US Patent 11505349 Wrapping machine

The wrapping machine includes a feed path of products to be wrapped in a wrapping sheet and, along the feed path, an insertion station of products to be wrapped in a wrapping sheet and folding members of the wrapping sheet. The machine further includes a conveyor device, which receives the products in the insertion station and causes their feed through the folding members. The conveyor device includes a system of endless flexible members formed by toothed belts guided around toothed wheels. Each toothed belt includes a first series of internal teeth, cooperating with toothed guide wheels, and a second series of external teeth, cooperating with connection elements of carriages that carry prongs for feeding the products to be wrapped. The connection elements include toothed profiles complementary to the external teeth of the toothed belts, suitable to provide a shape coupling with the external teeth of the respective toothed belts.