Automatic taping unit with improved system of withdrawal of the tape applying rollers for carton sealing machines.

摘要

An inlet applying roller (3) and an outlet applying roller (15) are elastically urged to project, at rest, from a casing (1) which may be fixed to a sealing machine. The inlet applying roller (3) is rotatably supported by support arms (6), which are movable along path defined by shaped windows (21) engaged with a fixed pivot (22), and the outlet applying roller (15) is rotatably supported by lever arms (13) rotatable about a fixed fulcrum (16). Said support arms (6) for the inlet and outlet rollers (3, 15) are kinematically connected to the support lever arms (13) of the outlet roller (15) so that the withdrawal movement of the inlet roller (3) is accompanied by a simultaneous withdrawal movement of the outlet roller (15) and the successive coming-out movement of the inlet roller (3) is made dependent on a simultaneous coming-out movement of the outlet roller (15). A cutting blade (37) is arranged between said rollers (3, 15) to cut the tape between subsequent cartons.