Winder with protection device

Abstract

Winder ( 1 ) for continuous web material, comprising: a motor-driven winding cylinder ( 13 ), a rod-holder structure ( 4 ), and at least one elastic element ( 7 ) for protecting said structure ( 4 ) against possible contact pressures greater than a preset value (P).

1 . Winder ( 1 ) for winding into reels a continuous web material from a feeding unit, comprising:
 a winding cylinder ( 13 ) having a motor-driven axis (e), fixed to a bedplate ( 5 ), said cylinder ( 13 ) having a surface of contact with the incoming web material;   a rod-holder structure ( 4 ) of rigid or semi-rigid type comprising an end (f) for engagement with a winding rod ( 2 ) and an end (g) hinged to the cylinder ( 13 ) to bring said rod ( 2 ) in contact with said winding cylinder ( 13 );   at least an elastic element ( 7 ) interposed between said engagement end (f) and said hinged end (g) of said rigid or semi-rigid support ( 4 ), to protect said structure ( 4 ) against possible contact pressures greater than a predetermined value (P).   
   
   
       2 . Winder ( 1 ) according to  claim 1 , wherein said rod-holder structure ( 4 ) comprises a hinged primary arm ( 3 ) and an oscillating arm ( 11 ). 
   
   
       3 . Winder ( 1 ) according to  claim 2 , wherein said primary arm ( 3 ) and said oscillating arm ( 11 ) are connected to each other by a first rigid component ( 6 ) engaged to an equalizer ( 18 ) and a hinge (c). 
   
   
       4 . Winder ( 1 ) according to  claim 2 , wherein said oscillating arm ( 11 ) further comprises a locking clamp ( 12 ) operable by a rigid support of cylinder-piston type ( 15 ) fixed to the same arm ( 11 ) to retain said winding rod ( 12 ). 
   
   
       5 . Winder according to  claim 1 , wherein said primary arm ( 3 ) is moved by a second rigid component ( 8 ) driven by one or more brushless motors ( 10 ) connected to one or more reducers ( 9 ). 
   
   
       6 . Winder according to  claim 1 , wherein said rod-holder structure ( 4 ) is a winding carriage ( 14 ) located downstream of said cylinder ( 13 ). 
   
   
       7 . Winder according to  claim 1 , wherein said elastic element ( 7 ) is an air spring. 
   
   
       8 . Winder according to  claim 1 , wherein said elastic element ( 7 ) is interposed between one end of said equalizer ( 18 ) and an abutment ( 19 ) formed directly on a predetermined region of the primary arm ( 3 ). 
   
   
       9 . Winder according to  claim 1 , wherein said motorization of said winding cylinder ( 13 ) is provided by one or more brushless motors. 
   
   
       10 . Winder according to  claim 1 , further comprising at least a torsion bar ( 16 ) for stiffening the winder ( 1 ). 
   
   
       11 . Winder ( 1 ) according to  claim 3 , wherein said oscillating arm ( 11 ) further comprises a locking clamp ( 12 ) operable by a rigid support of cylinder-piston type ( 15 ) fixed to the same arm ( 11 ) to retain said winding rod ( 12 ).