Method and shoe for pressing segments of multi-segment filter

Abstract

The object of the application is a method of pressing filter segments moving in a train of segments characterised in that the filter segments are pressed by means of a shoe ( 10, 10 A, 10′, 10 ″), whereas between the shoe undersurface ( 11, 11 A, 111, 111 A, 211, 211 A, 311, 411 ) and the filter segments (S), laid on a wrapper before gluing and covering the train of segments with the wrapper, compressed air is supplied by means of ducts ( 14, 15, 16 ). Furthermore, the object of the invention is a shoe ( 10, 10 A, 10′, 10 ″) for pressing segments of a continuous multi-segment rod characterised in that the undersurface ( 11, 11 A, 111, 111 A, 211, 211 A, 311, 411 ), for pressing filter segments (S) laid on a wrapper before gluing and covering the train of segments with the wrapper, is provided with a set of nozzles ( 17, 17 A, 19 ) for blowing in compressed air supplied through ducts ( 12, 13, 14 ).

1 . A method of pressing filter segments moving in a train of segments characterised in that
 the filter segments are pressed by means of a shoe ( 10 ,  10 A,  10 ′,  10 ″), whereas between the undersurface of the shoe ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ) and the filter segments (S) laid on a wrapper, before gluing and covering the train of segments with the wrapper, compressed air is supplied by means of ducts ( 14 ,  15 ,  16 ).   
     
     
         2 . A shoe ( 10 ,  10 A,  10 ′,  10 ″) for pressing segments of a continuous multi-segment rod characterised in that the undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ), for pressing filter segments (S) laid on a wrapper before gluing and covering the train of segments with the wrapper, is provided with a set of nozzles ( 17 ,  17 A,  19 ) for blowing in compressed air supplied through ducts ( 12 ,  13 ,  14 ), and the nozzles ( 17 A) widen in the direction to the segments (S) of the continuous multi-segment rod. 
     
     
         3 . (canceled) 
     
     
         4 . The Shoe as in  claim 2  characterised in that the nozzles ( 17 ,  17 A) are situated in at least one row, linearly, in principle along the direction of an axis (SA) of the train of segments (S), preferably 3 to 10 nozzles in a single row. 
     
     
         5 . The shoe as in  claim 2  characterised in that the rows of nozzles are arranged symmetrically in relation to the axis of symmetry of the undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ). 
     
     
         6 . The shoe as in  claim 4  characterised in that the rows of nozzles are arranged asymmetrically in relation to the axis of symmetry of the undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ). 
     
     
         7 . The shoe as in  claim 2  characterised in that its undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ) is a cylindrical surface. 
     
     
         8 . The shoe as in  claim 7  characterised in that the radius (R) of the cylindrical surface is between 1.5 and 10 times greater than the radius (r) of the segments, preferably between 2 and 5 times greater. 
     
     
         9 . The shoe as in  claim 2  characterised in that the undersurface is a flat surface. 
     
     
         10 . The shoe as in  claim 2  characterised in that the undersurface has grooves ( 18 ) distributing compressed air. 
     
     
         11 . The shoe as in  claim 2  characterised in that the shoe ( 10 ,  10 A,  10 ′,  10 ″) is attached at an angle to the axis (SA) of the segments, in particular at an angle between 0.7° and 2°. 
     
     
         12 . The shoe as in  claim 2  characterised in that the ducts ( 14 ,  15 ,  16 ) are situated relative to the vertical direction (V) at an angle (β) in the range between 0° and 30°, preferably in the range between 10° and 20°. 
     
     
         13 . The shoe as in  claim 2  characterised in that the undersurface ( 10 ,  10 A,  10 ′,  10 ″) is situated asymmetrically to the axis of the segments (S). 
     
     
         14 . The shoe as in  claim 2  characterised in that its undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ) is a cylindrical surface. 
     
     
         15 . The shoe as in  claim 4  characterised in that its undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ) is a cylindrical surface. 
     
     
         16 . The shoe as in  claim 5  characterised in that its undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ) is a cylindrical surface. 
     
     
         17 . The shoe as in  claim 6  characterised in that its undersurface ( 11 ,  11 A,  111 ,  111 A,  211 ,  211 A,  311 ,  411 ) is a cylindrical surface. 
     
     
         18 . The shoe as in  claim 4  characterised in that the undersurface is a flat surface. 
     
     
         19 . The shoe as in  claim 5  characterised in that the undersurface is a flat surface. 
     
     
         20 . The shoe as in  claim 6  characterised in that the undersurface is a flat surface.