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Device for producing yarn

A spun yarn and eddy current technology, which is applied in spinning machines, open-end spinning machines, continuous winding spinning machines, etc., can solve the problem of difficulty in preventing high fiber loss, and achieve the goal of reducing fiber loss and reducing high fiber loss. Effect

Inactive Publication Date: 2007-09-05
MASCHINENFABRIK RIETER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, with this method it proved difficult to prevent high fiber losses and to achieve a sufficiently high proportion of fibers in the twisted outer zone of the yarn cross-section

Method used

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  • Device for producing yarn
  • Device for producing yarn
  • Device for producing yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In FIG. 1 there is shown a swirl chamber region of a device according to the state of the art, with which twist is provided in a swirl chamber 3 in such a way to the fiber whiskers fed in via the fiber feed channel 1 The strip 2, whereby a spun yarn is generated in the vortex chamber 3 by the fluid injected through the nozzles 6 tangentially incorporated into the chamber, that is to say air. The fluid is discharged through a discharge channel 7, wherein the channel 7 exhibits a circular cross-section around the yarn-taking channel 5, the inlet opening area of ​​the discharge channel 7 has substantially the same diameter as the vortex chamber 3, and the vortex formed in the vortex chamber 3 Extending into this discharge channel 7 , the fiber portion 8 drawn out of the fiber strand under the influence of the centrifugal effect of the eddy current is wound helically in the discharge channel around the mandrel-shaped inlet region of the yarn take-off channel 5 . The swirl c...

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PUM

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Abstract

For producing a yarn (4) spun from a loose fibre array (2) using a vortex flow an apparatus is used in which between a fibre supply duct (1) and a yarn take-off tube (5) a vortex chamber (3) is provided. Into the vortex chamber (3) a fluid is injected via tangentially oriented nozzles (6), which subsequently is drained via an exhaust duct (7). This apparatus comprises a wall limiting the vortex chamber downstream zone formed e.g. by a wall plate (20). This plate separates the vortex chamber (3) from the exhaust duct (7), but for completely draining the fluid is provided with a plurality of openings (21) extending to the exhaust duct (7). Owing to the functional separation of the vortex chamber (3) from the exhaust duct (7), in which the inventive apparatus differs from the state of the art, the fibre losses are reduced.

Description

technical field [0001] The present invention relates to an apparatus for producing spun yarn from loose fiber strands using eddy current as the only twist adding mechanism. The device produces spun yarn from loose fiber strands fed to the device, wherein the fiber strands pass through a vortex chamber in which the fibers are swirled by a fluid and thereby spun into spun yarns. technical background [0002] Spinning devices of the type described above are known, for example, from US-5,528,895 or US-5,647,497 (both to Murata, Japan). These devices comprise a fiber feeding channel and a yarn taking channel, wherein the outlet area of ​​the fiber feeding channel is oriented substantially towards the inlet area of ​​the yarn taking channel, and the outlet opening of the fiber feeding channel is arranged in relation to the yarn taking channel The channels are spaced at a certain distance. Furthermore, anti-twist means (for example an eccentric edge over which fibers can be stret...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H1/115D01H4/02
CPCD01H1/115D01H4/02
Inventor H·斯塔尔德P·安德雷格
Owner MASCHINENFABRIK RIETER AG