Thread guide device for a winding apparatus

Abstract

A thread guide device for the winding apparatus of a workstation of a textile machine producing cross-wound bobbins, wherein the winding apparatus has a bobbin drive roller for rotating a cross-wound bobbin, and also a thread traversing device for traversing a thread running onto the surface of the cross-wound bobbin. In order, when winding a cross-wound bobbin during which a thread running onto the surface of a cross-wound bobbin is traversed and a thread traversing triangle thus results, to prevent thread length changes occurring which would have a negative effect on the winding result, there is provision according to the invention that the thread guide device has a spherically formed thread slide surface.

1 . A thread guide device for a winding apparatus of a workstation of a textile machine producing cross-wound bobbins, wherein the winding apparatus has a bobbin drive roller for rotating a cross-wound bobbin, and also a thread traversing device for traversing a thread running onto a surface of the cross-wound bobbin,
 wherein the thread guide device has a spherically designed thread slide surface.   
     
     
         2 . The thread guide device according to  claim 1 , wherein a spherical design of the thread slide surface is independent of a width of the cross-wound bobbins to be produced. 
     
     
         3 . The thread guide device according to  claim 1 , wherein the thread guide device is preferably arranged upstream of the thread traversing device. 
     
     
         4 . The thread guide device according to  claim 1 , wherein, initiated by the thread traversing device, a thread traversing triangle is given upstream of a last thread guide point of the workstation during a winding operation. 
     
     
         5 . The thread guide device according to  claim 4 , wherein the thread traversing triangle has corner points. 
     
     
         6 . The thread guide device according to  claim 5 , wherein one of the corner points is predetermined by a thread guide point. 
     
     
         7 . The thread guide device according to  claim 5 , wherein one of the corner points is predetermined by the thread guide contours of a thread guide that can preferably be driven by a single motor. 
     
     
         8 . The thread guide device according  claim 1 , wherein the thread guide device is made of stainless steel. 
     
     
         9 . The thread guide device according to  claim 1 , wherein the thread guide device can be fastened to a workstation housing of the workstation so as to be demountable. 
     
     
         10 . The thread guide device according to  claim 1 , wherein the thread guide device has mounting devices in or on which thread guide pins spaced apart from one another can be fastened. 
     
     
         11 . The thread guide device according to  claim 10 , wherein the mounting devices are designed so as to allow for a correction of a distance of the thread guide pins. 
     
     
         12 . A workstation of a textile machine producing cross-wound bobbins comprising:
 a winding apparatus having a bobbin drive roller for rotating a cross-wound bobbin; and   a thread traversing device for traversing a thread running onto a surface of the cross-wound bobbin;   the winding apparatus including a thread guide device having a spherically designed thread slide surface.   
     
     
         13 . A workstation of a textile machine assembly comprising:
 a cross-wound bobbin;   a winding apparatus having a bobbin drive roller for rotating the cross-wound bobbin; and   a thread traversing device for traversing a thread running onto a surface of the cross-wound bobbin;   the winding apparatus including a thread guide device having a spherically designed thread slide surface.