| 主权项 |
1. A packaging machine which grasps an upper end of a packaging bag by a grip and suspends the packaging bag and thereafter, intermittently moves the packaging bag to a subsequent step, the machine comprising:
a shaping device including a conveyor drive mechanism and a bottom tapping mechanism, the shaping device shaping the packaging bag filled with the article so that the packaging bag has a predetermined thickness, wherein the conveyor drive mechanism includes a pair of inner and outer side conveyors movable forward and backward in a direction perpendicular to a direction in which the conveyor drive mechanism moves the packaging bag, the side conveyors being capable of pressing the packaging bag filled with the article, from both sides of the packaging bag, when moved forward, the side conveyors being disposed over a filling step and one or more steps following the filling step, the side conveyors being configured to be run in parallel to the moving direction of the packaging bag substantially in synchronization with movement of the packaging bag when the packaging bag is moved with movement of the grip; wherein the bottom tapping mechanism includes a receiving plate which is movable up and down and is disposed over the filling step and one or more steps following the filling step; and wherein the receiving plate is moved up and down so that a bottom of the packaging bag is tapped, when the packaging bag filled with the article is stopped between the filling step and one or more steps following the filling step. |
