Multi-column automatic packaging machine

Abstract

A multiple-line automatic packing machine configured to produce packed products each having three sealed sides simultaneously and continuously in multiple lines. A vertical sealing device includes a vertical sealing belt. Vertical sealing is performed by rotating the vertical sealing belt along a conveying direction of the packing film at the same speed as conveying speed of the packing film while pressing the vertical sealing belt against a former through intermediation of an overlapping portion of the packing film. Further, a lateral sealing device performs lateral sealing on a portion of the packing film corresponding to a lower portion of a packing bag, and then performs lateral sealing on a portion of the packing film corresponding to an upper portion of the packing bag while moving upward and downward in synchronization with the packing film continuously conveyed at a predetermined speed.

1 . A multiple-line automatic packing machine, comprising:
 a former having a cylindrical shape;   a vertical sealing device;   a lateral sealing device; and   a raw material filling device,   the multiple-line automatic packing machine being configured to produce packed products each having three sealed sides simultaneously and continuously in multiple lines through the procedures of:
 slitting a strip of a wide packing film into a plurality of strips along a conveying direction of the wide packing film to form the wide packing film into multiple packing films; 
 forming each of the multiple packing films, which is continuously conveyed at a predetermined speed, into substantially a cylindrical shape by winding the each of the multiple packing films around an outer periphery of the former arranged along the conveying direction; 
 overlapping open sides of the each of the multiple packing films; 
 performing vertical sealing on the overlapping portion of the each of the multiple packing films to form the each of the multiple packing films into a cylindrical packing bag; 
 performing lateral sealing on the each of the multiple packing films by the lateral sealing device which moves downward in synchronization with the each of the multiple packing films continuously conveyed; 
 filling a content into the cylindrical packing bag by the raw material filling device; and 
 sealing the cylindrical packing bag by performing lateral sealing on an upper portion of the cylindrical packing bag by the lateral sealing device returned to original lateral sealing positions, 
   wherein the vertical sealing device comprises;   a vertical sealing belt rotating along the conveying direction of the each of the multiple packing films while pressing the overlapping portion against the former, and the vertical sealing belt being heated to a predetermined temperature;   vertical sealing feed belts that are arranged around the former and are arranged on both right and left sides of the vertical sealing belt, and the vertical sealing feed belts being rotated along the conveying direction of the each of the multiple packing films under a state in which the vertical sealing feed belt and the former sandwich the each of the multiple packing films therebetween;   a vertical sealing belt driving motor configured to rotationally drive the vertical sealing belt; and   vertical sealing feed belt driving motors respectively configured to rotationally drive the corresponding vertical sealing feed belt,   and wherein a rotational speed of the vertical sealing belt driving motor and rotational speeds of the vertical sealing feed belt driving motors are controlled independently of one another.   
     
     
         2 . (canceled) 
     
     
         3 . (canceled)