Textile machine texturing system and texturing nozzle therefor

Abstract

In a texturing system with a texturing nozzle and a first drum connected thereto and a further drum, a thread is guided on the outlet side of a texturing nozzle at the circumference of a drum in the form of a strip by friction and at least in part in positive manner, so that the longitudinal speed of the strip at the circumference of the drum corresponds with the circumferential speed of the drum in the area of the guide, whereby, by means of a pressure difference in an air guidance system, the effect is achieved by pressing the strip onto the surface of the drum. Further, the thread is guided in relation to its conveying speed and packing density, by positive and friction guidance under the imposition of air, as far as an outlet point on the first drum, and is transferred onto a second drum, on which the strip is cooled, extended if appropriate, and passed on to further guide or conveying rollers, respectively.

1 . A method for forming a textured yarn, comprising: 
 conveying a thread in the form of a thread strip from a texturing nozzle into a guide on the circumference of a first cooling drum;    transferring the thread strip from the first cooling drum onto the circumference of a second cooling drum with a guide element; and    controlling the density of the thread strip by guiding the thread strip from the texturing nozzle to the first cooling drum at a longitudinal conveying speed that corresponds to the circumferential speed of the cooling drum and by pressing the thread strip into the guide of the first cooling drum with an airflow from an air delivery system.    
   
   
       2 . The method as in  claim 1 , comprising heating and compressing the thread in the texturing nozzle by heated air or steam to form the thread strip, braking and cooling the compressed thread strip on the circumference of the first drum, and further cooling the thread strip to ambient temperature on the circumference of the second cooling drum.  
   
   
       3 . The method as in  claim 2 , comprising heating the thread in the texturing nozzle to between about 160 to about 200 degrees Celsius, braking the compressed thread at the circumference of the first drum from about 1/50 to about 1/80 of the thread speed at an inlet of the texturing nozzle, and cooling the compressed thread strip to between about 60 to about 100 degrees Celsius on the first drum.  
   
   
       4 . The method as in  claim 1 , comprising conveying the thread strip from the texturing nozzle and onto the first drum over a distance of between about 0.5 to about 2.0 mm.  
   
   
       5 . The method as in  claim 1 , comprising drawing an under-pressure in an interior of the first cooling drum, whereby the airflow is drawn across the thread strip, through perforations in the guide, and into the interior of the first cooling drum.  
   
   
       6 . The method as in  claim 5 , wherein the under-pressure is drawn in the amount of between about 100 to about 250 mm of water column.  
   
   
       7 . The method as in  claim 1 , wherein the thread strip is cooled on the second cooling drum by drawing air across the thread strip, through perforations in the surface of the second cooling drum, and into an interior of the second cooling drum.  
   
   
       8 . The method as in  claim 1 , wherein the guide in the first cooling drum is a groove, and defining the depth of the groove such that the thread strip generally fills the groove and from  0  to about 30% of the cross-section of the thread strip lies outside of the groove.  
   
   
       9 . The method as in  claim 1 , further comprising moving the first cooling drum away from the texturing nozzle before the beginning of a texturing process, and after one or more threads have been drawn in, moving the first cooling drum back towards the texturing nozzle a minimum of 0.5 mm.  
   
   
       10 . The method as in  claim 1 , further comprising moving the texturing nozzle away from the first cooling drum before the beginning of a texturing process, and after one or more threads have been draw in, moving the texturing nozzle back towards the first cooling drum a minimum of 0.5 mm.  
   
   
       11 . The method as in  claim 1 , further comprising drawing the thread strip from the second cooling drum by a mono or duo delivery mechanism.