Mold-design and improvement of an automatic expansible side paperboard bag folding and gluing machine

Abstract

This utility model corresponds to a special mold-design used to manufacture paperboard bags. The mold-design is a piece of creased paper, which makes it possible for a modified gluing-folding machine to perform a series of liner steps to finish the bag, the process ending with the step in which the product is rotated to glue the bottom. The process is fully automated.

What is claimed is:  
     
         1 . Mold-design and improvement for an automatic expansible side paperboard bag folding-gluing machine, characterized by the need for a special creased mold-design to make the bag, consisting of: the mold-design used to make the bag comprises four sections: the first is the upper lap, the other side of which is called the upper face, the second section is the side lap the other side of which is called the left-hand expansible side, the third section is the lower lap, the other side of which is called the lower face and the fourth section is the side lap, the other side of which is called the right-hand expansible side; this section includes a gluing stub; the side laps are creased down the middle for ease of folding; the side laps between the upper and lower lap are also creased; three angle cuts with diagonal ends are made between these parts in the internal section of the angle and it is creased along its entire length; creasing of all parts means the appropriate folds can be made for subsequent gluing; and on the other side of the cut, the mold-design section is straight and has only four holes into which two pieces of string can be inserted for handles.  
     
     
         2 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  1 , this machine's distinguishing feature is that to make the fold it is necessary that its component parts be creased in order to finish the bottom.  
     
     
         3 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine as per clause  1 , characterized by the fact that the bottom is folded by forming triangles at the base using the sides of the bag.  
     
     
         4 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  1 , characterized by the following special attachments: automatic compressed air suction feed unit, attachment to manufacture boxes with automatic bottom, re-positioning unit, which rotates the product in process 90 degrees for finishing, special inserter that inserts the bottom during the folding and gluing process in order to make the base of the product stronger, a high-speed hot glue application system, and a central control system.  
     
     
         5 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  4 , characterized by an automatic feeder, conveyer belts and folding guides.  
     
     
         6 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  4 , characterized by special hooks that guide the laps and expansible sides to ensure that they are placed as needed and that they remain folded long enough to manufacture the bag.  
     
     
         7 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  4 , characterized by the fact that it uses a speed differential on the conveyer belts to rotate the product 90 decrees in the last stage of the gluing process.  
     
     
         8 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine as per clause  2 , characterized by the fact that the bottom is folded by forming triangles at the base using the sides of the bag.  
     
     
         9 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  2 , characterized by the following special attachments: automatic compressed air suction feed unit, attachment to manufacture boxes with automatic bottom, re-positioning unit, which rotates the product in process 90 degrees for finishing, special inserter that inserts the bottom during the folding and gluing process in order to make the base of the product stronger, a high-speed hot glue application system, and a central control system.  
     
     
         10 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  2 , characterized by the following special attachments: automatic compressed air suction feed unit, attachment to manufacture boxes with automatic bottom, re-positioning unit, which rotates the product in process 90 degrees for finishing, special inserter that inserts the bottom during the folding and gluing process in order to make the base of the product stronger, a high-speed hot glue application system, and a central control system.  
     
     
         11 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  5 , characterized by special hooks that guide the laps and expansible sides to ensure that they are placed as needed and that they remain folded long enough to manufacture the bag.  
     
     
         12 . Mold-design and improvement for automatic expansible side paperboard bag folding-gluing machine, as per clause  6 , characterized by the fact that it uses a speed differential on the conveyer belts to rotate the product 90 decrees in the last stage of the gluing process.