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 compressed thread strip from a texturing nozzle onto a circumference of a perforated cooling drum;    maintaining an under-pressure in the interior of the cooling drum; and    cooling the thread strip on the surface of the cooling drum by directing an airflow across the thread strip from an apertured outlet of a blower device and drawing the airflow through the perforated cooling drum by the under-pressure within the interior of the cooling drum.    
     
     
         2 . The method as in  claim 1 , wherein the apertured outlet is a component of a guide for ensuring that the thread strip is adhered against the surface of the cooling drum.  
     
     
         3 . The method as in  claim 1 , further comprising cooling the thread strip on the cooling drum at a location downstream of the guide with an additional blower device.  
     
     
         4 . The method as in  claim 1 , further comprising conveying the thread strip from the cooling drum onto the surface of an additional cooling drum, and cooling the thread strip on the additional cooling drum with an additional blower device.  
     
     
         5 . The method as in  claim 1 , comprising heating a thread in the texturing nozzle and compressing the heated thread to form the compressed thread strip, braking the compressed thread strip on the surface of the cooling drum, conveying the compressed thread strip from the cooling drum to an additional cooling drum and cooling the thread strip to ambient temperature on the additional cooling drum.  
     
     
         6 . The method as in  claim 5 , 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 cooling 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 cooling drum.  
     
     
         7 . The method as in  claim 1 , comprising conveying the thread strip from the texturing nozzle and onto the cooling drum over a distance of between about 0.5 to about 2.0 mm.  
     
     
         8 . The method as in  claim 1 , wherein the under-pressure in the cooling drum is drawn in the amount of between about 100 to about 250 mm of water column.  
     
     
         9 . The method as in  claim 1 , further comprising conveying the thread strip from the cooling drum onto the surface of an additional cooling drum, and cooling the thread strip on the additional cooling drum with an air flow drawn across the thread strip and into the interior of the additional cooling drum.  
     
     
         10 . The method as in  claim 1 , comprising conveying the thread strip from the texturing nozzle into a groove in the cooling drum, 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.