Opening device for opening a bag section of a film web in a bag filling plant

Abstract

The invention relates to an opening device ( 10 ) for opening a bag section ( 210 ) of a film web ( 200 ) in a bag filling plant ( 100 ) for filling in bulk goods, comprising a suction device ( 20 ) for suctioning the two sides ( 212, 214 ) of the bag section ( 200 ) with an articulately supported first suction cup ( 22 ) on the first side ( 212 ) of the bag section ( 210 ) and an articulately supported second suction cup ( 24 ) on the second side ( 214 ) of the bag section ( 200 ), with at least one of the suction cups ( 22, 24 ) being arranged acute-angled in reference to the respective side ( 212, 214 ) of the bag sections ( 200 ).

1 . An opening device ( 10 ) for opening a bag section ( 210 ) of a film web ( 200 ) in a bag filling plant ( 100 ) for filling in bulk goods, comprising a suction device ( 20 ) for suctioning the two sides ( 212 ,  214 ) of the bag section ( 200 ) with an articulately supported first suction cup ( 22 ) on the first side of the bag section ( 210 ) and an articulately supported second suction cup ( 24 ) on the second side ( 214 ) of the bag section ( 200 ), characterized in that at least one of the suction cups ( 22 ,  24 ) is arranged acute-angled in reference to the respective side ( 212 ,  214 ) of the bag section ( 200 ). 
     
     
         2 . An opening device ( 10 ) according to  claim 1 , characterized in that the suction cups ( 22 ,  24 ) are supported articulately between a suction position (S) and an opening position (O), with the acute-angled arrangement of at least one suction cup ( 22 ,  24 ) being embedded at least in the suction position (S). 
     
     
         3 . An opening device ( 10 ) according to  claim 1 , characterized in that the suction cups ( 22 ,  24 ) each show a suction area ( 26 ), respectively defining a suction level ( 28 ), with the sectional line ( 30 ) generated by the acute-angled arrangement extending vertically or essentially vertically between the respective suction level ( 28 ) and the respective side ( 212 ,  214 ) of the bag section ( 210 ). 
     
     
         4 . An opening device ( 10 ) according to  claim 1 , characterized in that the suction cups ( 22 ,  24 ) each show a suction area ( 26 ), which respectively defines a suction level ( 28 ), with the sectional line ( 30 ) generated by the acute-angled arrangement comprising an acute angle (α) in reference to the vertical (V) between the respective suction level ( 28 ) and the respective side ( 212 ,  214 ) of the bag section ( 210 ). 
     
     
         5 . An opening device ( 10 ) according to  claim 1 , characterized in that both suction cups ( 22 ,  24 ) are arranged acute-angled in reference to the respective side ( 212 ,  214 ) of the bag section ( 210 ), particularly in a manner symmetrical in reference to the be section ( 210 ). 
     
     
         6 . An opening device ( 10 ) according to  claim 1 , characterized in that the minimum distance (A) between the respective suction cup ( 22 ,  24 ) and the side ( 212 ,  214 ) of the bag section ( 210 ) is identical or essentially identical for both suction cups ( 22 ,  24 ). 
     
     
         7 . An opening device ( 10 ) according to  claim 1 , characterized in that the suction device ( 20 ) comprises an adjustment device for adjusting the acute-angled arrangement of at least one suction cup ( 22 ,  24 ). 
     
     
         8 . An opening device ( 10 ) according to  claim 1 , characterized in that at least one of the suction cups ( 22 ,  24 ) comprises at least one sealing lip ( 50 ), which is embodied for sealing against the side ( 212 ,  214 ) of the bag sections ( 210 ). 
     
     
         9 . An opening device ( 10 ) according to  claim 8 , characterized in that the sealing lip ( 50 ) compensates or essentially compensates the acute arrangement of the respective suction cup ( 22 ,  24 ) to the side ( 212 ,  214 ) of the bag section ( 210 ). 
     
     
         10 . An opening device ( 10 ) according to  claim 1 , characterized in that each suction cup ( 22 ,  24 ) comprises a suction opening ( 21 ), which is embodied with a grid structure ( 23 ) against suctioning in the bag section ( 210 ).