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Drafting unit

A component, drafting technology, used in drafting equipment, textiles and papermaking, spinning machines, etc., can solve the problems of obtaining measurable results for discontinuous fibers, achieve limited cost, reduce neps formation, increase The effect of the draft ratio

Active Publication Date: 2010-12-08
阿太克斯有限公司 +1
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Problems solved by technology

[0026] On the other hand, due to the non-uniform length of the flax fibres, the high dispersion of diameters and lengths of the discrete fibers (in the case of flax threads, comprised between about 18 microns and 50 microns, however, e.g. in the case of wool, it included between about 19 microns and 28 microns), the average and long term considerable variation in the count of the incoming sliver and, last but not least, the presence of water on the sliver in wet spinning, so Solutions for draft control in the wool and cotton industry cannot be used to obtain measurable results in the drafting of discontinuous fibers

Method used

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Embodiment Construction

[0055] refer to figure 1 , the drafting unit 10 of the present invention is installed in a spinning machine 100 for flax. The drafting unit 10 receives a sliver or sliver 18 of flax fed from a bobbin 16 after the sliver or sliver has been immersed in a water-filled box 17 (wet spinning) and passed through a sliver guide.

[0056] The sliver 18 comprises long and short discontinuous fibers of flax cord, which have varying counts, have varying diameters comprised between about 18 microns to 50 microns, and also have diameters comprised between 20 mm to 100 mm. Varying length.

[0057] By long fibers we mean fibers whose length is comprised between 50 mm and 100 mm.

[0058] By staple fibers we mean fibers whose length is comprised between 20 mm and 50 mm.

[0059] Once drafted in the drafting section 10, the sliver 18 is sent via the yarn guide 19 to the spinning machine 21, where it continues in the preparation of the linen yarn.

[0060] At least in the drafting unit 10, t...

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Abstract

A drafting unit (10) for drafting discontinuous textile fibers comprises a first pair of feed rolls (12) that feed a sliver or strip (18) toward a second pair of drafting rolls (14) that draft the sliver or strip (18). The drafting unit also comprises a control device (11) to control the drafting disposed between the first pair of feed rolls (12) and the second pair of drafting rolls (14), which comprises a third pair of control rolls (20, 22), of which a first roll (20) on one side of the sliver or strip (18) and a second roll (22) on another side of the sliver or strip (18). The control rolls (20, 22) act on the sliver or strip (18) arriving from the first pair of feed rolls (12) in order to take it at a determinate speed of feed toward the second pair of drafting rolls (14).

Description

technical field [0001] The present invention relates to an improved type of drafting unit for use in spinning discontinuous fibers, especially flax, which achieves effective control of the fibers, especially staple fibers. Background technique [0002] Known methods of spinning natural fibers are defined as eliminating impurities, mixing components, separating fibers by carding, finishing fibers by combing, refining structure and regularity by drafting, forming in Yarns on suitable holders (winding spools) are used to incorporate structures. [0003] In particular, the yarn is obtained from a sliver whose weight is determined in grams by drawing, subsequent twisting and finally winding. [0004] Prior to drafting, the production of high-quality counts and especially linen yarns stipulates that the sliver is immersed in a box filled with water (wet spinning) before the sliver is introduced into the drafting area. This operation facilitates the separation of the fiber bundle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01H5/22D01H5/56D01H5/72
CPCD01H5/72D01H5/22D01H5/56
Inventor 翁贝托·麦克莱蒂保罗·萨维奥
Owner 阿太克斯有限公司
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