Device for drawing up card clothing

Abstract

The invention relates to a device for winding card clothing onto a roll with a roll drive unit and a brake device acting on the card clothing for generating a winding pretension in the region of the card clothing between the roll and the brake device. The procedure of winding should be improved by this device. In this respect, the brake device includes at least one braking roller, pressing onto the outer side of the card clothing and running with it, and a brake-force device producing the braking force, whereby the brake-force device brakes the card clothing indirectly via the braking roller.

1 . Device for winding a card clothing ( 4 ) onto a roll ( 6 ) with a roll drive unit ( 7 ) and a brake device ( 5 ) acting on the card clothing ( 4 ) for generating a winding pretension in the region ( 12 ) of the card clothing ( 4 ) between the roll ( 6 ) and the brake device ( 5 ), characterized in that the brake device ( 5 ) includes at least one braking roller ( 16 ,  18 ) pressing onto an outer side ( 19 ,  20 ) of the card clothing ( 4 ) and running with it and a brake-force device ( 5 ) producing the braking force, whereby the brake-force device ( 28 ) brakes the card clothing ( 4 ) indirectly via the braking roller ( 16 ,  18 ).  
     
     
         2 . Device according to  claim 1 , characterized in that a pair of braking rollers ( 16 ,  18 ) is provided, through which the card clothing ( 4 ) passes and through which, taken together, a braking effect can be produced.  
     
     
         3 . Device according to  claim 2 , characterized in that at least one braking roller ( 18 ) is fitted with a profile as a guide roller, whereby the profile is matched to a section of the outer contour of the card clothing ( 4 ) to be wound.  
     
     
         4 . Device according to  claim 3  for winding card clothing ( 4 ) with a narrow tooth region ( 13 ) and a widened base region ( 14 ), characterized in that at least one braking roller ( 18 ) exhibits a circumferential groove ( 17 ) in which the base region ( 14 ) of the card clothing ( 4 ) substantially exactly passes.  
     
     
         5 . Device according to one of the  claims 1  to  4 , characterized in that the braking roller ( 16 ,  18 ) exhibits a shaft ( 25 ,  26 ) supported in bearings and on which the brake-force device ( 28 ) acts.  
     
     
         6 . Device according to  claim 5 , characterized in that the brake-force device ( 28 ) includes brake linings ( 30 ) acting on the shaft ( 25 ,  26 ).  
     
     
         7 . Device according to one of the  claims 1  to  6 , characterized in that the brake device ( 5 ) includes an adjustment unit for adjusting the braking effect.  
     
     
         8 . Device according to one of the  claims 1  to  7 , characterized in that the brake device ( 5 ) includes an open and/or closed-loop control unit ( 10 ) through which the braking effect can be automatically matched to the winding pretension.  
     
     
         9 . Device according to  claim 8 , characterized in that the roll drive unit ( 7 ) is integrated into the open and/or closed-loop control circuit of the open and/or closed-loop control unit ( 10 ) and the roll drive unit ( 7 ) can be open or closed-loop controlled for automatic matching to the specified winding pretension.  
     
     
         10 . Device according to one of the  claims 1  to  9 , characterized in that the brake device ( 5 ) includes a braking motor or an eddy current brake or a torque brake.  
     
     
         11 . Device according to one of the  claims 1  to  10 , characterized in that the brake device ( 5 ) includes a brake force sensor.  
     
     
         12 . Device according to one of the  claims 1  to  11 , characterized in that the brake device ( 5 ) includes a recording unit for recording the braking force and/or the winding speed.  
     
     
         13 . Device according to one of the  claims 1  to  12 , characterized in that the brake device ( 5 ) includes a speed sensor.  
     
     
         14 . Device according to one of the  claims 1  to  13 , characterized in that at least two braking rollers ( 16 ,  18 ) are arranged in series.  
     
     
         15 . Device according to  claim 14 , characterized in that a braking band is passed over the braking rollers ( 16 ,  18 ) which are arranged in series, the band being pressed onto an outer side ( 19 ,  20 ) of the card clothing ( 4 ).