Method and device for erecting blanks cut from paperboard

Abstract

The invention relates to a method and device for erecting (flat) blanks ( 12 ) for cartons, collapsible boxes, trays ( 11 ) or the like. Said blanks ( 12 ) are moved before an aperture ( 16 ) of a forming shaft ( 17 ) and introduced therein with a forming punch ( 20, 22 ), which in particular can be raised and lowered, with parts of the blank ( 12 ) being erected, in particular those in the region of side walls ( 15 ) and longitudinal walls and/or transverse walls of the carton or the like. According to the invention, after a blank ( 12 ) has been pushed into the forming shaft ( 17 ), the forming punch ( 20, 22 ) is moved at least partially outside of the forming shaft ( 17 ) to a position in front of the aperture ( 16 ) of the forming shaft ( 17 ). It is preferably provided that the forming shaft ( 17 ) is assigned at least two forming punches ( 20, 22 ), which are moved respectively in succession to press a (separate) blank ( 12 ) into the forming shaft ( 17 ). The forming punches ( 20, 22 ) are pivoted out of the forming shaft ( 17 ). The forming punches ( 20, 22 ) are preferably pivoted out of the forming shaft ( 17 ) in a direction opposite to the direction in which the blanks ( 12 ) are pressed into the forming shaft ( 17 ).

1 . A method for erecting (flat) blanks ( 12 ) for cartons, collapsible boxes, trays ( 11 ) and the like, with said blanks ( 12 ) being moved in front of an aperture ( 16 ) of a forming shaft ( 17 ) and introduced therein by means of a forming punch ( 20 ,  22 ), which can be raised and lowered, whereby parts of the blank ( 12 ) in the region of walls ( 15 ) of the cartons, collapsible boxes, trays and the like, are erected in the process, characterized in that, once the blank ( 12 ) has been introduced into the forming shaft ( 17 ), the forming punch ( 20 ,  22 ) is moved, in a direction opposite to that of pressing down the blanks ( 12 ), at least partially out of the forming shaft ( 17 ) and returned to a position in front of the aperture ( 16 ) of the forming shaft ( 17 ).  
   
   
       2 . The method according to  claim 1 , characterized in that the forming shaft ( 17 ) is assigned at least two forming punches ( 20 ,  22 ) which are moved into the forming shaft ( 17 ) in succession in order to press respectively a separate blank ( 12 ) into the forming shaft ( 17 ).  
   
   
       3 . The method according to  claim 2 , characterized in that the forming punches ( 20 ,  22 ) can be swiveled out of the forming shaft ( 17 ).  
   
   
       4 . The method according to  claim 2 , characterized in that the forming punches ( 20 ,  22 ) are moved, outside of the forming shaft ( 17 ) in front of its aperture ( 16 ) for the purpose of pressing down a further blank ( 12 ).  
   
   
       5 . The method according to  claim 1 , characterized in that the forming punches ( 20 ,  22 ) are continuously driven, by means of a common drive ( 24 ,  55 ).  
   
   
       6 . The method according to  claim 1 , characterized in that the blanks ( 12 ) are taken from a stack of blanks ( 13 ), and conveyed in front of the aperture ( 16 ) of the forming shaft ( 17 ).  
   
   
       7 . The method according to  claim 1 , characterized in that after passing through the forming shaft ( 17 ) the at least partially erected blanks ( 12 ) are fed to a conveying means ( 21 ) having at least one conveyor belt ( 45 ).  
   
   
       8 . The method according to  claim 7 , characterized in that the blanks ( 12 ) are fed by the forming punches ( 20 ,  22 ) to the conveying means ( 21 ), or pressed between carriers ( 48 ) mounted on the conveying means ( 21 ).  
   
   
       9 . The method according to  claim 7 , characterized in that the erection of the blanks ( 12 ) is completed during their transport on the conveying means ( 21 ), by the filling of products ( 10 ) into the partially completed cartons, collapsible boxes, trays ( 11 ) and the like.  
   
   
       10 . A device for erecting flat blanks ( 12 ) for cartons, collapsible boxes, trays ( 11 ) and the like, in which said blanks ( 12 ) are moved in front of an aperture ( 16 ) of a forming shaft ( 17 ) and introduced therein by means of a forming punch ( 20 ,  22 ), which can be raised and lowered, whereby parts of the blank ( 12 ) in the region of walls of the cartons collapsible boxes, trays ( 11 ) and the like, are erected in the process, characterized in that, once the blank ( 12 ) has been pressed into the forming shaft ( 17 ), the forming punch ( 20 ,  22 ) can be moved at least partially outside of the forming shaft ( 17 ) and returned to a position in front of the aperture ( 16 ) of the forming shaft ( 17 ), it being possible to wherein the forming punch ( 20 ,  22 ) is moved out of the forming shaft ( 17 ) in a direction opposite to that of pressing in the blanks ( 12 ).  
   
   
       11 . The device according to  claim 10 , characterized in that the forming shaft ( 17 ) is assigned at least two forming punches ( 20 ,  22 ) which can be moved in succession in order to press respectively a separate blank ( 12 ) through the forming shaft ( 17 ).  
   
   
       12 . The device according to  claim 11 , characterized in that the forming punches ( 20 ,  22 ) are rotatably mounted for the purpose of swiveling out of the forming shaft ( 17 ) or for swiveling in front of the aperture ( 16 ) of the forming shaft ( 17 ).  
   
   
       13 . The device according to  claim 11 , characterized in that the respective forming punches ( 20 ,  22 ) are rotatably, mounted on a carriage ( 42 ,  50 ) that can be moved up and down outside of the forming shaft ( 17 ).  
   
   
       14 . The device according to  claim 10 , characterized in that arranged at the end of the forming shaft ( 17 ) is a conveying means ( 21 ) for receiving the blanks ( 12 ) that have been at least partially erected in the forming shaft ( 17 ).  
   
   
       15 . The device according to  claim 14 , characterized in that the at least partially erected blanks ( 12 ) can be transferred directly by the forming punches ( 20 ,  22 ) to receptacles for blanks ( 12 ) in the region of the conveying means ( 21 ).  
   
   
       16 . The device according to  claim 13 , characterized in that the forming punches ( 20 ,  22 ) are disposed to move up and down in the vertical direction, on a respective endless conveyor, as part of a linear axis ( 51 ).  
   
   
       17 . The device according to  claim 14 , characterized in that the forming punches ( 20 ,  22 ) can be pivoted or swiveled on a strand of the endless conveyor, by means of a carriage ( 50 ) arranged on the endless conveyor.  
   
   
       18 . The device according to  claim 14 , characterized in that the endless conveyor is assigned a common drive ( 24 ,  55 ).  
   
   
       19 . The device according to  claim 13 , characterized in that the carriages ( 50 ) are each assigned a drive ( 52 ) for the purpose of pivoting the forming punches ( 20 ,  22 ).