System for satin finishing of sheet metal by means of mechanically fixed flap wheels

Abstract

A system ( 1 ) for satin finishing of sheets of metal ( 4 ) uses mechanically fixed flap wheels ( 6 ), namely flap wheels ( 6 ) whose flaps ( 9 ) are fixed mechanically to the hub ( 10 ) of the flap wheel ( 6 ). The system includes at least one satin finishing station ( 5 )—equipped with at least one mechanically fixed flap wheel ( 6 ) with a horizontal axis and with a mechanism ( 7 ) adapted to make the at least one mechanically fixed flap wheel ( 6 ) rotate, and a feed element ( 8 ) adapted to feed the sheets of metal ( 4 ) longitudinally through the satin finishing stations ( 5 ). Advantageously, in order to compensate for the wear on the flaps ( 9 ) of the mechanically fixed flap wheels ( 6 ) and keep their peripheral speed and their removal pressure constant, the rotation speed of the mechanically fixed flap wheels ( 6 ) is increased and the wheels are moved vertically.

1 . A system ( 1 ) for satin finishing, by means of flap wheels ( 6 ), of sheet metal ( 4 ) moving on a bed of rollers ( 2 ) with a horizontal axis carried by a support ( 3 ), which comprises in combination with each other: 
 at least one satin finishing station ( 5 ) equipped with at least one flap wheel ( 6 ) and with means ( 7 ) adapted to cause the at least one flap wheel to rotate ( 6 );    feed means ( 8 ), adapted to feed the sheet metal ( 4 ) along the roller bed ( 2 ) and through the at least one satin finishing station ( 5 );    characterised in that the at least one flap wheel ( 6 ) is a mechanically fixed flap wheel, whose flaps ( 9 ) are mechanically fixed to the hub ( 10 ) of the flap wheel ( 6 ).    
   
   
       2 . A satin finishing system ( 1 ) as in  claim 1 , characterised in that each satin finishing station ( 5 ) comprises a supporting structure ( 11 ), rocking around pivots ( 14 ) carried by the support ( 3 ), inside which is placed at least one mechanically fixed flap wheel ( 6 ), means ( 7 ) adapted to make the mechanically fixed flap wheel ( 6 ) rotate, and means ( 8 ) adapted to feed the sheets of metal ( 4 ) through the satin finishing station ( 5 ).  
   
   
       3 . A satin finishing system ( 1 ) as in  claim 2 , characterised in that the supporting structure ( 11 ) consists of two side plates ( 12 ) connected to each other by means of the side member ( 13 ) and in that the at least one mechanically fixed flap wheel ( 6 ), the means ( 7 ) adapted to make the at least one flap wheel rotate and the means ( 8 ) adapted to feed the sheets of metal ( 4 ) through the satin finishing station ( 5 ) are carried by the side plates ( 12 ).  
   
   
       4 . A satin finishing system ( 1 ) as in  claim 2 , characterised in that the means ( 7 ) adapted to cause the at least one mechanically fixed flap wheel ( 6 ) to rotate consist of at least one electric motor connected to the at least one mechanically fixed flap wheel ( 6 ).  
   
   
       5 . A satin finishing system ( 1 ) as in  claim 2  characterised in that the means ( 8 ) adapted to feed the sheet metal ( 4 ) through the at least one satin finishing station ( 5 ) consist of at least one motorised roller acting on the sheet metal ( 4 ).  
   
   
       6 . A satin finishing system ( 1 ) as in  claim 1 , characterised in that each satin finishing station ( 5 ) further comprises adjustment means adapted to change the speed of rotation of the at least one mechanically fixed flap wheel ( 6 ) and move it vertically.  
   
   
       7 . A satin finishing system ( 1 ) as in  claim 1 , for satin finishing of sheets of metal ( 4 ) having a width smaller than the length of the at least one mechanically fixed flap wheel ( 6 ), characterised in that each satin finishing station ( 5 ) further comprises means ( 16 ) adapted to swing the satin finishing station ( 5 ) cyclically in a direction transversal to the direction of feed of the sheet metal ( 4 ) to spread the wear of the at least one mechanically fixed flap wheel ( 6 ) belonging to the satin finishing station ( 5 ) evenly along the whole length of said flap wheel.