Device for filling of a container of collapsible type

Abstract

A device for filling a container of a collapsible type with a product in the form of powder or liquid, the container having a compartment which is defined by flexible walls and whose volume is dependent on the relative position of the walls and which communicates with the surroundings through a filling duct of the container. The device comprises a filling tube ( 2 ) with an end portion ( 5 ), which is insertable into the filling duct of the container to supply a product to the compartment of the container through the filling tube 2 . The device further comprises an end element ( 4 ), which is arranged in an outlet ( 6 ) of the end portion ( 5 ) and which is movable between a first position, in which the end element ( 4 ) sealingly connects to the outlet ( 6 ), and a second position, in which the end element ( 4 ) together with the outlet ( 6 ) defines a filling passage ( 7 ), and a squeezing means ( 3 ), which is adapted to grasp the end portion ( 5 ) and the filling duct when the end portion ( 5 ) is inserted into the filling duct to establish a seal between the end portion ( 5 ) and the filling duct.

1 . A device for filling a container ( 12 ) of a collapsible type with a product in the form of powder or liquid, said container ( 12 ) having a compartment which is defined by flexible walls and whose volume is dependent on the relative position of the walls and which communicates with the surroundings through a filling duct ( 13 ) of the container ( 12 ), comprising
 a filling tube ( 2 ) with an end portion ( 5 ), which is insertable into said filling duct ( 13 ) of the container ( 12 ) to supply a product to the compartment of the container ( 12 ) through said filling tube ( 2 ),   characterised in that the device further comprises   an end element ( 4 ), which is arranged in an outlet ( 6 ) of the end portion ( 5 ) and which is movable between a first position, in which the end element ( 4 ) sealingly connects to said outlet ( 6 ), and a second position, in which the end element ( 4 ) together with the outlet ( 6 ) defines a filling passage ( 7 ), and   a squeezing means ( 3 ), which is adapted to grasp the end portion ( 5 ) and the filling duct ( 13 ) when said end portion ( 5 ) is inserted into said filling duct ( 13 ) to establish a seal between the end portion ( 5 ) and the filling duct ( 13 ),   said end portion ( 5 ) of the filling tube ( 2 ) being made of a rigid material.   
   
   
       2 . A device as claimed in  claim 1 , in which said filling passage ( 7 ) has the shape of a circumferential gap. 
   
   
       3 . A device as claimed in  claim 1 , in which said end element ( 4 ) is supported by a piston rod ( 9 ) arranged in said filling tube ( 2 ). 
   
   
       4 . A device as claimed in  claim 3 , in which the end element ( 4 ) is movable between said first and second position by axial movement of said piston rod ( 9 ). 
   
   
       5 . A device as claimed in  claim 3 , in which a bevel ( 17 ) is arranged adjacent to the connection between said piston rod ( 9 ) and said end element ( 4 ). 
   
   
       6 . A device as claimed in  claim 1 , in which said end element ( 4 ) supports a seal ( 8 ), which when the end element ( 4 ) is arranged in said first position engages the outlet ( 6 ). 
   
   
       7 . A device as claimed in  claim 1 , in which the end element ( 4 ) has a shape tapering from the filling tube ( 2 ). 
   
   
       8 . A device as claimed in  claim 1 , in which the end element ( 4 ) has the shape of a wedge. 
   
   
       9 . A device as claimed in  claim 8 , in which the end element ( 4 ) has a circular base. 
   
   
       10 . A device as claimed in  claim 8 , in which the end element ( 4 ) has a base in the shape of a convex lens. 
   
   
       11 . A device as claimed in  claim 11 , in which said material is stainless steel. 
   
   
       12 . A device as claimed in  claim 1 , in which said squeezing means ( 3 ) comprises elastic engaging surfaces ( 11 ) which are arranged to grasp said filling duct ( 13 ) and said end portion ( 5 ). 
   
   
       13 . A device as claimed in  claim 1 , in which said end element ( 4 ) has a liquid-repellent surface. 
   
   
       14 . A device as claimed in  claim 2 , in which said end element ( 4 ) is supported by a piston rod ( 9 ) arranged in said filling tube ( 2 ). 
   
   
       15 . A device as claimed in  claim 4 , in which a bevel ( 17 ) is arranged adjacent to the connection between said piston rod ( 9 ) and said end element ( 4 ). 
   
   
       16 . A device as claimed in  claim 2 , in which said end element ( 4 ) supports a seal ( 8 ), which when the end element ( 4 ) is arranged in said first position engages the outlet ( 6 ). 
   
   
       17 . A device as claimed in  claim 3 , in which said end element ( 4 ) supports a seal ( 8 ), which when the end element ( 4 ) is arranged in said first position engages the outlet ( 6 ). 
   
   
       18 . A device as claimed in  claim 4 , in which said end element ( 4 ) supports a seal ( 8 ), which when the end element ( 4 ) is arranged in said first position engages the outlet ( 6 ). 
   
   
       19 . A device as claimed in  claim 5 , in which said end element ( 4 ) supports a seal ( 8 ), which when the end element ( 4 ) is arranged in said first position engages the outlet ( 6 ). 
   
   
       20 . A device as claimed in  claim 2 , in which the end element ( 4 ) has a shape tapering from the filling tube ( 2 ).