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Card wire, especially for doffers and workers

A technology for card clothing and wool needles is applied in the field of improving the efficiency of fiber transfer to small drums and work rolls during textile carding, and can solve problems such as limited application value.

Inactive Publication Date: 2004-09-08
COMMONWEALTH SCI & IND RES ORG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tests carried out by the applicant have shown that such combs are of very limited use for this purpose, even when the grooves are rectangular in cross-section and relatively deep

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Card wire, especially for doffers and workers
  • Card wire, especially for doffers and workers
  • Card wire, especially for doffers and workers

Examples

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Embodiment Construction

[0024] The teeth of conventional small roller needles have an inboard or beveled returning edge to form an overall overhang shape. The concept of the present invention stems from the realization that the effectiveness of small roller needles can be greatly improved by making the inside or return blade face of the tooth, i.e. the blade face that overhangs below, as parallel as possible to the bottom of the needle . At first glance, this involves making the teeth very slender and very blunt elements, which will improve the gripping of the fibers at all stages of transfer from the large drum to the small drum.

[0025] However, this elongated shape is not the most feasible because, firstly, the teeth may be too thin to be strong enough, and secondly, the space available to accommodate the collected fibers is greatly reduced. The present invention solves this difficulty, but by proposing to form one or more and preferably a plurality of concave cutting edges, preferably parallel ...

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PUM

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Abstract

Card clothing comprises a strip of profile wire having a plurality of longitudinally aligned teeth(110)with respective overhanging tips(111). The edge-face(112)of each tooth under the overhanging tip includes at least one undercut edge-segment(114)spaced along the edge-face from the tip. This undercut edge-segment increases the retention of fibres by the edge-face during carding.

Description

technical field [0001] This invention relates generally to card clothings and in particular to improving the efficiency of fiber transfer to small cylinders and work rolls during textile carding. Background technique [0002] A very important aspect of carding is the transfer efficiency of fibers from the main or large drum to the small drum. Low transfer efficiency results in excessive fiber recirculation on small drums, which in turn reduces product quality by increasing fiber breakage and creating fuzz on the fabric. In the worst case, increased fiber breakage will result in a reduced Hauteur or average fiber length in the combed wool product. Small roller needles are specially designed and manufactured to maximize loop transfer efficiency by ensuring that the working angle is optimized and the tooth tips are sharp. The life of the needle is maximized by proper metallurgy and heat treatment of the needle at the time of manufacture. [0003] The work rolls in the card f...

Claims

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Application Information

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IPC IPC(8): D01G15/18D01G15/46D01G15/84D01G15/88
CPCD01G15/88D01G15/84
Inventor 肯尼思·R·阿特金森
Owner COMMONWEALTH SCI & IND RES ORG
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