Abstract: Preformed bag feeder for packaging machines which comprises buckets containing the preformed bags and first means for picking up successive bags from the buckets and for supplying the bags, one by one, to fastening clamps located at a point of the trajectory of the transporter, the clamps allowing pick-up of the successive bags, in a vertical orientation, by the transporter. The transporter comprises, following the fastening clamps, a positioner that carries out the horizontal and vertical alignment of the successive bags with respect to horizontal and vertical reference lines; arranging the bags in a fixed position wherein the lower extremity of the successive bags matches the horizontal reference line and the aforementioned bags are centered with respect to the vertical reference line.

Abstract: This device comprises a pair of parallel arms (1, 2) having clamps (11, 21) for clamping the packages (E) to be transported and means for regulating separation which comprise:—a scissor mechanism (4) having two rods (41, 42) articulated to the rear end of the arms (1, 2) and carrying roller means (46, 47);—guide sections (5, 5a . . . ) distributed on the packaging machine, provided with a longitudinal track (51) for guiding the roller means (46, 47) of the scissor mechanism (4) and—actuating means (7) suited to moving each guide section (5, 5a) and arranging the latter in a position suited to determining the separation of each pair of parallel arms (1, 2) in each area of the route of the transport device by means of a variation in longitude of the scissor mechanism (4).

Abstract: This device comprises a pair of parallel arms (1, 2) having clamps (11, 21) for clamping the packages (E) to be transported and means for regulating separation which comprise:—a scissor mechanism (4) having two rods (41, 42) articulated to the rear end of the arms (1, 2) and carrying roller means (46, 47);—guide sections (5, 5a . . . ) distributed on the packaging machine, provided with a longitudinal track (51) for guiding the roller means (46, 47) of the scissor mechanism (4) and—actuating means (7) suited to moving each guide section (5, 5a) and arranging the latter in a position suited to determining the separation of each pair of parallel arms (1, 2) in each area of the route of the transport device by means of a variation in longitude of the scissor mechanism (4).

Abstract: Preformed bag feeder for packaging machines which comprises buckets containing the preformed bags and first means that pick up the successive bags from the buckets and supply them, one by one, to fastening clamps located at a point of the trajectory of the transporter, the clamps allowing the pick-up of the successive bags, in the vertical position, by the transporter. The transporter comprises, following the fastening clamps, a positioner that carries out the horizontal and vertical alignment of the successive bags with respect to horizontal and vertical reference lines; arranging them in a fixed position wherein the lower extremity of the successive bags matches the horizontal reference line and the aforementioned bags are centered with respect to the vertical reference line.