Device for closing bags

Abstract

The invention relates to a device for closing bags by means of plastic closing elements ( 2 ) which are linked by connecting pins, thereby forming a plate and can be individually and successively separated producing a closing strip directed to a supplying channel ( 25 ). Said closing elements are provided with a cracked orifice on one side thereof and placed on the neck of the bag rushed by clamping elements ( 3 ) with the aid of the forming punch which is provided with a support for receiving the closing elements ( 2 ). Said invention is characterised in that the forming punch ( 5 ) is connected to a separating matrix ( 4 ) and the supplying channel ( 25 ) is arranged on the plane of the closing strip, said plane being perpendicular with respect to the sliding plane of the punch and matrix ( 4, 5 ).

1 . An apparatus for closing bags ( 11 ) using plastic closures ( 2 ) that are individually separable one after another from a closure strip ( 18 ) being conveyed in a feeding channel ( 25 ), said closures ( 2 ) having a plate-like shape and being linked to one another by means of connecting tabs ( 2   a - d ), wherein the closures ( 2 ) are slid with an opening ( 16 ) having a slit on one side onto a bag neck ( 12 ) by means of a shaped stamp ( 5 ) having a holder for receiving the closure ( 2 ), said neck ( 12 ) having been gathered into a ruche ( 13 ) using gathering means ( 3 ), characterized in that the shaped stamp ( 5 ) has an associated separating stamp ( 4 ) and that the feeding channel ( 25 ) is located in the same plane with the closure strip ( 18 ), said plane being disposed orthogonal to the plane of movement of the stamps ( 4 ,  5 ).  
   
   
       2 . A closing apparatus according to  claim 1 , characterized in that the separating stamp ( 4 ) has at least one finger ( 4   a ) and the shaped stamp ( 5 ) has a fork head ( 6 ) with fingers ( 7 ,  8 ,  9 ,  9 ′), and that the shaped stamp ( 5 ) and the separating stamp ( 4 ) are designed such that first the separating stamp ( 4 ) and then the shaped stamp ( 5 ) are movable vertically upward initially for a first separation process of the closure ( 2 ) from the closure strip ( 18 ), after which the shaped stamp ( 5 ) during standstill of the separating stamp ( 4 ) is subsequently movable vertically upward separately for a swiveling process, for a second separation process of the closure ( 2 ) from the closure strip ( 18 ), and for receiving the closure ( 2 ) in the fork head ( 6 ), and the shaped stamp ( 5 ) is subsequently vertically movable back down together with the separating stamp ( 4 ) into a starting position.  
   
   
       3 . A closing apparatus according to  claim 2 , characterized in that the fork head ( 6 ) of the shaped stamp ( 5 ) has two fingers ( 7 ,  8 ) in a front plane and two fingers ( 9 ,  9 ′) in a rear plane located parallel to the former, and that the finger pairs ( 7 ,  8 ;  9 ,  9 ′) located in one plane are spaced apart by a recess in each case.  
   
   
       4 . A closing apparatus according to  claim 3 , characterized in that a groove ( 10 ) for receiving the closure ( 2 ) is implemented in each case between two opposed fingers ( 7 ,  9 ;  8 ,  9 ′).  
   
   
       5 . A closing apparatus according to  claim 4 , characterized in that the grooves ( 10 ) are located in a plane parallel to the front and rear planes of the fork head ( 6 ).  
   
   
       6 . A closing apparatus according to  claim 3 , characterized in that the length of the fingers ( 7 ,  8 ) of the front plane is longer by approximately two thirds than the length of the fingers ( 9 ,  9 ′) of the rear plane, and that the finger ( 7 ) facing the feeding channel ( 25 ) is designed slightly longer than the finger ( 8 ) located in the same plane facing away from the feeding channel.  
   
   
       7 . A closing apparatus according to  claim 3 , characterized in that the fingers ( 9 ,  9 ′) of the rear plane incorporate a bezel in each case facing the fingers ( 7 ,  8 ) of the front plane.  
   
   
       8 . A closing apparatus according to  claim 6 , characterized in that the finger ( 7 ) facing the feeding channel ( 25 ) of the fork head ( 6 ) of the shaped stamp ( 5 ) is disposed centrically between the tabs ( 2   a ,  2   b ) under the edge being separated of the closure ( 2 ).  
   
   
       9 . A closing apparatus according to  claim 8 , characterized in that the finger ( 4   a ) of the separating stamp ( 4 ) is disposed under the tab ( 2   a ) of the closure ( 2 ) to be separated during the first separation process.  
   
   
       10 . A closing apparatus according to  claim 2 , characterized in that above the horizontal plane of the feeding channel ( 25 ), an end stop ( 26 ) is disposed on the vertical longitudinal axis centered between the fingers ( 9 ,  9 ′) of the rear plane of the fork head ( 6 ), about which end stop ( 26 ) the closure ( 2 ) is swiveled from its horizontal plane into the vertical plane of the fork head ( 6 ) by means of the vertical upward movement of the fork head ( 6 ).  
   
   
       11 . A closing apparatus according to  claim 10 , characterized in that the end stop ( 26 ) is the head of a cylinder head screw.  
   
   
       12 . A closing apparatus according to  claim 10 , characterized in that the end stop ( 26 ) during advancement of the closure strip ( 18 ) is a guide means for the closure ( 2 ) being separated.  
   
   
       13 . A closing apparatus according to  claim 2 , characterized in that the separating stamp ( 4 ) and the shaped stamp ( 5 ) and the finger ( 4   a ) of the separating stamp are disposed on the fork head ( 6 ) of the shaped stamp ( 5 ) sliding on one another or spaced apart in vertical parallel planes.