Abstract: An assembly for folding polymeric film for machines for forming pouches and the like includes a fixed frame for supporting a magazine for the polymeric film, an element for folding the film that arrives from the magazine, and at least one heat-sealing device for the stable coupling of juxtaposed portions of the folded film that arrives from the folding element. The folding element is mounted on a carriage, which can translate along a respective guide which is integral with the frame, along the sliding direction of the film, with a speed that is variable in intensity and sign. The at least one heat-sealing device acts on portions folded onto themselves of the film during a temporary stop thereof. The carriage retracts with respect to the sliding direction of the film for the entire duration of the temporary stop step provided for the heat-sealing of the film.

Abstract: A thermal bonding assembly for sheets made of polymeric material includes at least one pair of jaws that can be moved mutually closer, at least one of which is provided with a heater at its surface for abutment against a corresponding complementary surface of the other jaw of the pair. The assembly includes a shaft that can rotate by virtue of the action of a respective motor. The rotatable shaft includes at least two eccentric rings which are arranged side by side so that the eccentric portion that protrudes the most with respect to the rotation axis is substantially mutually opposite. Each jaw of the pair includes a respective through hole for the accommodation of the shaft. The shaft is accommodated in the hole of a respective jaw with the interposition of a rotatable disk.

Abstract: An assembly for movement according to predefined rules of motion, includes a supporting frame forming a working path that accommodates a driving element with which at least one movable element is associated which is adapted to move an item to be subjected to a process. The assembly includes, interposed between the driving element and each respective movable element, at least one movement adjustment apparatus having a contoured guide, arranged substantially parallel to the driving element, at least one first lever that has a first end that can slide within the guide, and a portion that is pivoted to at least one second lever which in turn is coupled rigidly to the driving elements. The first lever has a second end, which is opposite the one that can slide in the guide, which is articulated to a linkage, which in turn is pivoted on a portion of a respective movable element.