| 摘要 |
<p>A strapping head for a strapping machine is disclosed, comprising a containment frame (C) suitable to house at least a strap launch/rewind path defined by a launch/tensioning assembly (1) comprising a plurality of driving wheels (10, 11, 12, 13, 14, 15) of said strap, a welding assembly (3) and a gripping and cutting device (2) comprising locking grippers, a moving abutment plate and a cutter,
said driving wheels of the launch/tensioning assembly being brought into rotation by a first actuation motor (M 1 ), wherein all of said launch/tensioning assembly (1), welding assembly (3) and gripping and cutting device (2) have driving members driven into movement through a single linear cam (4) apt to move alternately in the longitudinal direction through a second actuation motor (M 2 ) and having cam profiles both on an horizontal plane and on a vertical plane, and
said linear cam (4) is actuated by said second driving motor (M 2 ) being integral in rotation with screwed spindle transmission means mutually cooperating with screw nut means integral with said linear cam (4).</p> |
