Vertical tubular bag machine for packing stacks of items placed one on top of the other

Abstract

In order to achieve reliable packing of stacked items ( 18 ) into tubular bags ( 16 ) by a vertical tubular bag machine ( 1 ) with a filling station ( 7 ) above a filling pipe ( 6 ), it is proposed that the filling station ( 7 ) is intended for delivering in each case a stack ( 37 ) of groups of items ( 23 ) placed one on top of the other, each group of items ( 23 ) being formed by at least two partially overlapping items ( 18 ).

1 . A vertical tubular bag machine ( 1 ) with a web of: film ( 3 ) unwound from a supply roll ( 2 ), a shaping shoulder ( 4 ) with a constant and continuously curved deflecting edge ( 38 ) for shaping the web of film ( 3 ) into a film tube ( 5 ), a vertically aligned filling pipe ( 6 ), which receives the film tube ( 5 ) and through which it is possible to fill the film tube ( 5 ), a filling station ( 7 ) with items ( 18 ) to be packed, above the filling pipe ( 6 ), two film takeoffs ( 8 ), acting from opposite sides of the filling pipe ( 6 ) against the film tube ( 5 ), and consequently against the filling pipe ( 6 ), for further transportation of the web of film ( 3 ) and the film tube ( 5 ), a longitudinal sealing device ( 9 ) for welding the film tube ( 5 ) by means of a longitudinal seam ( 11 ), aligned in the transporting direction ( 10 ), a transverse sealing device ( 12 ) with two welding jaws ( 13 ), which can be moved toward each other and weld the film tube ( 5 ) transversely, for producing top seams ( 14 ) and bottom seams ( 15 ) of tubular bags ( 16 ) and also a cutting device ( 17 ) for severing the tubular bags ( 16 ) from the film tube ( 5 ), wherein the filling station ( 7 ) is intended for delivering in each case a stack ( 37 ) of groups of items ( 23 ) placed one on top of the other, each group of items ( 23 ) being formed by at least two partially overlapping items ( 18 ).  
     
     
         2 . The tubular bag machine as claimed in  claim 1 , wherein the items ( 18 ) are round and have a peripheral, flat edge ( 24 ).  
     
     
         3 . The tubular bag machine as claimed in  claim 2 , wherein two walls ( 32 ) of the filling pipe ( 6 ) that lie opposite one another and are not intended for the film takeoffs ( 8 ) to act on have in each case at least two outwardly directed bends ( 34 ,  35 ).