False twist-crimping machine

Abstract

A false-twist crimping machine for processing filament yarn. The machine comprises a side frame having a bobbin located thereon for supplying the filament yarn to a delivery means for guiding the yarn to a heating zone. A middle frame carries a cooling zone which receives the yarn as it feeds from the heating zone. A false-twisting means receives the yarn as it feeds from the cooling zone and a take-off means supplies the yarn emitting from the false-twisting means to a winding device located at the middle frame. In assembly, the heating zone slopes at an oblique angle between the side frame and the middle frame and a height-adjustable yarn guide means is positioned at the angle formed between the heating zone and the cooling zone in a manner so that the yarn may run over it along a line substantially tangent from the outlet of the heating zone and along a line substantially tangent to the inlet of the cooling zone.

What is claimed is: 
     
       1. A false-twist crimping machine for processing filament yarn, said machine comprising: a side frame having a bobbin located thereon for supplying the filament yarn,   a delivery means for guiding said yarn to an upwardly inclined heating zone,   a middle frame carrying a downwardly disposed cooling zone which receives said yarn as it feeds from said heating zone,   a false-twisting means for receiving said yarn as it feeds from said cooling zone,   a take-off for supplying said yarn emitting from said false-twisting means to a winding device located at said middle frame,   said heating zone sloping at an oblique angle between said side frame and said middle frame, and   a yarn guide means positioned at the angle formed between said heating zone and cooling zone in a manner so that said yarn may run over it along a line substantially tangent from the outlet of said heating zone and along a line substantially tangent to the inlet of said cooling zone.   
     
     
       2. The false-twist crimping machine of claim 1 wherein said heating zone comprises a downwardly directed contact surface along which said yarn travels. 
     
     
       3. The false-twist crimping machine of claim 1 wherein said yarn guide means is mounted on a height-adjustable rod whose guide path is located in the angle formed between said heating zone and said cooling zone. 
     
     
       4. The false-twist crimping machine of claim 3 wherein said yarn guide means further comprises a pair of pivotal arms mounted on the upper end of said height-adjustable rod, said pivotal arms having yarn over-run elements positioned at their upper ends, said arms being caused to pivot apart in the region of the angle formed between said heating zone and said cooling zone by fixed stops provided at a predetermined location therein. 
     
     
       5. The false-twist crimping machine of claim 1 wherein said yarn guide means comprises at least one yarn over-run element which is positioned along a line substantially tangent to the inlet of said cooling zone and is displaced by not more than 30° from a line substantially tangent to the outlet of said heating zone. .Iadd. 6. A falst-twist crimping machine for processing filament yarn, said machine comprising: a side frame having bobbins located thereon for supplying filament yarn;   a middle frame laterally spaced from said side frame and defining a service passage therebetween for movement thereabout of a machine operator;   yarn heating means having an inlet end and an outlet end and defining an elongate heating zone terminating above the height of said side frame;   yarn delivery means associated with said side frame and said heating means for guiding the yarn to the inlet end of said heating means;   yarn cooling means associated with said middle frame and having an inlet end and an outlet end and defining an elongate cooling zone;   said heating means and said cooling means being angularly disposed relative to each other so that the inlet end of said heating means and the outlet end of said cooling means are disposed on opposite sides of said service passage, and the outlet end of said heating means and the inlet end of said cooling means are closely adjacent each other and generally form the apex of an acute angle with said apex being located at a height above said side frame, whereby the yarn is directed upwardly in the heating zone and downwardly in the cooling zone during processing;   yarn guide means positioned generally at said apex between the adjacent ends of said heating and cooling means for guiding the yarn from the heating zone to the cooling zone;   false twisting means carried by said middle frame for receiving the yarn from said cooling means; and   winding means carried by said middle frame for winding the processed yarn. .Iaddend..Iadd. 7. The false-twist crimping machine of claim 6 wherein said yarn heating means has a length greater than the width of said service passage. .Iaddend.