Thread feeding device and cable for the same

Abstract

A yarn feed system for a textile machine having a clamp for fastening to a mounting ring ( 4 ) of the machine. Contact pins are disposed on the clamp ( 3 ) and serve the purpose of piercing the insulation of a flat multi-cord cable ( 17 ) retained on the machine ring ( 4 ). For positionally correct orientation of the flat multi-cord cable ( 17 ) before and during the insulation-piercing operation, a guide element ( 37 ) is used, which is supported movably on or at the clamp. In the vertical direction, it is preferably retained by a spring arm ( 49 ). On its flanks, the flat multi-cord cable ( 17 ) preferably has grooves, which can likewise serve to orient the flat multi-cord cable positionally correctly before and during the insulation-piercing operation. The tips of the contact pins are located in the grooves and thereby bring about the alignment of the flat multi-cord cable ( 17 or 54 ).

1 .- 16 . (canceled)  
   
   
       17 . A yarn feed system ( 1 ) for a textile machine comprising, 
 a main body ( 2 ) having a yarn feeder ( 5 ) and at least one electrical device ( 14   a ,  53 ) having a conductor ( 32 ,  33 ,  34 ,  35 );    a fastening clamp ( 3 ) for fastening the yarn feed system ( 1 ) to the textile machine;    at least one contact pin ( 22 ,  23 ,  24 ,  25 ) disposed at the fastening clamp ( 3 ) arranged for making contact with said conductor ( 32 ,  33 ,  34 ,  35 ); and    a guide element ( 37 ) disposed adjacent the contact pin ( 22 ,  23 ,  24 ,  25 ) for locating said conductor ( 32 ,  33 ,  34 ) in relation to said contact pin ( 22 ,  23 ,  24 ,  25 ), and said guide element ( 37 ) being mounted for movement relative to said main body ( 2 ) and contact pin ( 22 ,  23 ,  24 ,  25 ).    
   
   
       18 . The yarn feed system of  claim 17  in which said electrical device is one of switch ( 14   a ), a sensor, or a motor ( 53 ).  
   
   
       19 . The yarn feed system of  claim 17  in which said pin ( 22 ,  23 ,  24 ,  25 ) has an elongated axis, and said guide ( 37 ) is supported for movement relative to said main body in the axial direction of said pin.  
   
   
       20 . The yarn feed system of  claim 17  in which said fastening clamp  3  has a jaw  19  that is open at the bottom.  
   
   
       21 . The yarn feed system of  claim 17  in which said fastening clamp ( 3 ) has a clamping screw ( 2 ) with an axis extending transversely to an opening in said clamp.  
   
   
       22 . The yarn feed system of  claim 20  in which said contact pin ( 22 ,  23 ,  24 ,  25 ) extends transversely to the opening direction of said jaw ( 19 ).  
   
   
       23 . The yarn feed system of  claim 17  in which said contact pin ( 22 ,  23 ,  24 ,  25 ) is fixedly supported in stationary fashion relative to said main ( 2 ) body.  
   
   
       24 . The yarn feed system of  claim 17  in which said fastening claim ( 3 ) has a jaw ( 19 ) that defines an opening, and said contact pin ( 22 ,  23 ,  24 ,  25 ) extends into said jaw opening.  
   
   
       25 . The yarn feed system of  claim 17  including a plurality of said contact pins ( 22 ,  23 ,  24 ,  25 ) which are disposed parallel to and spaced apart from one another in order to provide electrical contact with a plurality of conductors ( 32 ,  33 ,  34 ,  35 ).  
   
   
       26 . The yarn feed system of  claim 17  in which said contact pin ( 22 ,  23 ,  24 ,  25 ) is an insulation-piercing contact.  
   
   
       27 . The yarn feed system of  claim 25  in which said conductors ( 32 ,  33 ,  34 ,  35 ) are included in a cable ( 17 ).  
   
   
       28 . The yarn feed system of  claim 27  in which said cable ( 17 ) has a rectangular cross section.  
   
   
       29 . The yarn feed system of  claim 27  in which said guide element is mounted for movement in a direction parallel to said contact pin ( 22 ,  23 ,  24 ,  25 ).  
   
   
       30 . The yarn feed system of  claim 27  in which said guide element is resiliently biased toward a receiving position.  
   
   
       31 . The yarn feed system of  claim 30  in which said guide element ( 37 ) has a jaw ( 41 ) with a contour corresponding to a cable to be electrically contacted by said contact pin.  
   
   
       32 . The yarn feed system of claim  36  in which positioning of said guide element to said receiving position disconnects the conductor from the contact pin ( 22 ,  23 ,  24 ,  25 ).