US 6,332,312 B1Granted

Method and device for spinning with a suppressed yarn balloon

AssigneeZinser Textilmaschinen GmbH

InventorRainer Löscher

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Abstract

The invention relates to a method and device for spinning with a suppressed yarn balloon (75), whereby the rotation of the yarn is predominately produced between a top spindle (2) and the clamping gap (523) of delivery rolls (521, 522) at the exit of the drafting system (5). The top spindle (2) is provided with one or a plurality of projecting parts in the head area thereof and extends with said projecting parts on the elongated axis of the spindle (1) from underneath up to a vertically displaceable yarn guide (3). The vertically adjustable yarn guide is displaced upwards and away from the top spindle in order to prepare an automated feed package changing. Afterwards, the ring tail (4) is lowered into the underwinding position. The aim of the invention is to provide a method which can also be used for flat and very fine yarns, especially combed yarns. To this end, the extended slubbing (71) which exits the drafting system is compacted while the yarns are maintained in a parallel position. The slubbing is guided in the clamping gap of the delivery rolls which are arranged downstream from the drafting system and at a distance therefrom.

Claims8

Dependent claims

A method of spinning which comprises the steps of:

(a) drafting a slubbing by passing said slubbing through a drafting frame having rollers at an output side of said drafting frame defining a nip engaging the drafted slubbing;
(b) subjecting drafted slubbing in said drafting frame to compaction immediately upstream of said nip by passing the drafted slubbing over a row of perforations under suction to draw fibers inwardly and compact the drafted slubbing entering said nip;
(c) passing a compacted drafted slubbing emerging from said nip through a vertically shiftable thread guide positioned axially above a spindle carrying a bobbin sleeve on which a spun thread is to be wound;
(d) in a lower position of said thread guide, engaging the compacted drafted slubbing with a balloon-suppressing attachment extending upwardly from said spindle to twist the compacted drafted slubbing between said attachment and said nip substantially without a thread triangle at said nip to form a thread and guide said thread onto said bobbin sleeve through a traveler on a vertically movable ring rail to wind a bobbin thereon with a suppressed thread balloon;
and
(e) preparatory to bobbin change, displacing said thread guide upwardly to disengage said thread from said attachment and lowering said ring rail to an underwinding portion of said spindle.

3 more elements

A spinning machine comprising:

a drafting frame for drafting at least one slubbing and having rollers at an output side of said drafting frame defining a nip engaging the drafted slubbing;
a slubbing compactor in said drafting frame immediately upstream of said nip for subjecting drafted slubbing in said drafting frame to compaction and including a row of perforations under suction for drawing fiber inwardly of stubbing passing over the row of perforations to compact the drafted slubbing entering said nip;
a vertically shiftable thread guide receiving compacted drafting stubbing emerging from said nip;
a spindle disposed below said thread guide and carrying a bobbin sleeve on which a thread spun from the compacted drafted slubbing is to be wound;
and
a balloon suppressing attachment extending upwardly from said spindle and engaging the compacted drafting slubbing to twist the compacted drafting slubbing between said attachment and said nip substantially without a thread triangle at said nip to form a thread and guide said thread onto said bobbin sleeve through a traveler on a vertically movable ring rail to wind a bobbin on said sleeve with a suppressed thread balloon, said thread guide being located directly above said attachment for spinning and being outwardly movable and laterally swingable away from a position above said attachment for said bobbin change, said drafting frame including rollers spaced upstream from the rollers at the output side of said drafting frame and forming a compaction zone provided with perforated belts and suction shoes.

3 more elements

Dependencies are inferred from the claim text.