Pinching and Cutting Device for a Flat Knitting Machine

Abstract

The invention relates to a device ( 3 ) for pinching and cutting yarns for a flat knitting machine, said machine, said machine comprising at least one needle board ( 1 ) on which a plurality of needles are arranged, said device comprising a plurality of hooks ( 6 ) capable of grasping at least one yarn and moving between an idle position and a gripping position, said device being configured to be fastened to one of the ends of said needle board such that said device, when fastened to the needle board of the machine, extends in the plane of said needle board.

1 . A device for pinching and cutting yarns for a flat knitting machine, said machine comprising at least one needle board on which a plurality of needles are arranged, said device comprising a plurality of hooks capable of grasping at least one yarn and moving between an idle position and a pinching and cutting position, said device being configured to be fastened to one of the ends of said needle board such that said device, when fastened to the needle board of the machine, extends in the plane of said needle board, and wherein said device comprises activating means making it possible to move the hooks of said device independently of one another, and wherein said activating means are kinematically connected to driving means comprising at least one motor. 
     
     
         2 . The device according to  claim 1 , wherein said driving means consist of a first electric motor and a second electric motor. 
     
     
         3 . The device according to  claim 1 , wherein said activating means comprise connecting means, a first set of activation bars and a second set of activation bars, said connecting means being configured and arranged so as to kinematically connect said driving means with said first set of activation bars and said second set of activation bars. 
     
     
         4 . The device according to  claim 3 , wherein said connecting means are configured and arranged so as to be able to move all of the activation bars of said first set simultaneously and to move all of the activation bars of said second set simultaneously. 
     
     
         5 . The device according to  claim 3 , wherein the driving means can be configured and arranged so as to be able to drive the activation bars of said first set independently of the activation bars of said second set. 
     
     
         6 . The device according to  claim 3 , wherein said connecting means comprise a first axle provided with at least one first toothed wheel. 
     
     
         7 . The device according to  claim 3 , wherein said connecting means comprise a second axle provided with at least one second toothed wheel. 
     
     
         8 . The device according to  claim 6 , wherein the first toothed wheel meshes with a rack of an activation bar of said first set. 
     
     
         9 . The device according to  claim 7 , wherein the second toothed wheel meshes with a rack of an activation bar of said second set. 
     
     
         10 . The device according to  claim 3 , wherein each of the activation bars of said first set is provided with a lever arranged such that said lever can move between an active position and an inactive position. 
     
     
         11 . The device according to  claim 10 , wherein said lever is provided with a first pilot point. 
     
     
         12 . The device according to  claim 10 , wherein said lever is provided with a second pilot point. 
     
     
         13 . The device according to  claim 3 , wherein each of the activation bars of said second set comprises a cam path extending over at least part of its length. 
     
     
         14 . The device according to  claim 13 , wherein said cam path comprises at least one protuberance. 
     
     
         15 . The device according to  claim 1 , wherein each of said hooks includes a notch. 
     
     
         16 . The device according to  claim 1 , wherein said device comprises detection means for determining the position of the hooks of the device. 
     
     
         17 . A flat knitting machine, wherein said machine comprises at least one device according to  claim 1 .