SU1583495A1 - Method of producing bulk yarn - Google Patents

Abstract

The invention relates to the textile industry, to a method for producing shaped yarn and to improve its quality. According to the method, the main roving is drawn in the stretching apparatus to form a yarn. Intermittently, an additional pair of rollers is fed to the feed pair of the exhaust device by a ladle to form a shaped effect, which is torn in the zone between the supply pair of rollers of the exhaust device and the additional pair of rollers when the latter are stopped. When the roving is broken, bundles of fibers are formed, which are connected to the main roving and jointly pulled out in a stretching device. The sliver coming out of the exhaust device is twisted into a shaped yarn. The wiring between the supply pair of the exhaust device and the additional pair of rollers is equal to the average fiber length of the torn roving. 1 hp ff, 3 ill.

Description

The invention relates to the textile industry and relates to a method for producing shaped yarn with different effects (structural, color and others) on ring spinning and spinning machines.

The aim of the invention is to improve the quality of shaped yarn.

Figure 1 shows the general scheme of the device for carrying out the method; figure 2 is separated from the roving fiber bundle; on fig.Z - shaped pr.

The method is carried out as follows.

The main roving 1 is rolled up from the reel 2 to form the yarn,

is introduced into a two-zone exhaust device 3 and is pulled there. Descending from coil 4 additional roving

5 for the formation of a shaped effect are fed by an intermittently rotating additional pair of rollers 6 into a constantly rotating power supply 7 of an exhausting device. The wiring is between a pair of rollers

6 and the supply pair 7 is equal to the average length of the fibers of the roving 5. In the zone between these pairs of rollers, when the rollers 6 stop, roving 5 breaks into a bundle of 8 fibers that are inserted into the exhaust device and connect them to the exhaust roving 1

and together they are pulled into a sliver, which, when exiting the exhaust device, is twisted with a spindle into the shaped yarn 9,

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Since the connection between the fibers in. the bundle is broken as a result of pulling them out of the roving, the individual fibers initially fall into the clamp of the feeding pair 7, then their quantity increases and then decreases, as a result of which a sharp increase in the thickness (linear density) of the pr yarn obtained as a result of the joint stretching of the main roving and an additional bundle of fibers with the subsequent twisting of the sliver into the yarn.

Rovnica 5 differs from the main roving in color and fiber composition.

A brief rotation of the pair of rollers 6 is provided by a separate drive or during transmissions from the rear cylinder of the exhaust device.

Twisting the sliver into the buckle and winding it onto the cartridge occurs according to the usual pattern of operation of the ring spinning machine.

Intermittent roving feed 5 to you-. The tactile device allows you to create a shaped effect on the programmed program.

Example. To obtain a two-color cotton polyacrylonitrile yarn, an I-7L-511b spinning machine is used. The design of the BP-3-45 II exhaust device with the load lever RK-225 allows the installation of an additional pair of rollers on the entire side of the machine. In this case, the rotation of these rollers is carried out from the rear cylinder of the exhaust device by means of a specially designed gear (with cut teeth). This allows one to obtain a short-term periodic rotation of an additional pair of rollers, i.e. discrete feed of roving to the supply pair of the exhaust device. The number of teeth left on the drive gear determines the duration of rotation of the additional pair of rollers and, accordingly, the length of the roving bundle supplied to the extractor, and ultimately, the length of the yarn section produced from the main roving and the supplementary fiber bundle. The white cotton roving is carried out with a linear density of 330 tex and additional polyacrylose.

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blue nitrile roving with a linear density of 330 tex. Polyacrylonitrile roving is produced on the equipment of a cotton carding system from a mixture with an investment of 20% of carding and 80% of polyacrylonitrile fiber with a linear density of 0.17 tex of cotton cutting. On the drive gear mounted on the rear cylinder, left two teeth. As a result, a yarn has been developed with varying properties along its length.

The proposed method allows expanding the assortment of yarn produced on ring spinning and spinning machines, increasing its quality, improving its technological passability in the course of further processing.

Produced by the proposed method, the yarn is characterized by various properties along its length. Section 10 of the yarn, developed from the main roving, is characterized by a certain fibrous composition, color, and physicomechanical properties. The other section 11, produced from the main roving and an additional fiber bundle, is characterized by a different fibrous composition, color, and physicomechanical properties from the previous section. In addition, this yarn is characterized by minimal migration of the fibers of the additional roving along the main strand. This is due to the fact that the main and discretely supplied ropes are jointly pulled together in a hood, followed by twisting the pin into the buckle. This leads to an improvement in the quality of the yarn, as well as an improvement in the technological permeability during its further processing.

The supply of an additional rove to the exhaust steam supplying pair provides the possibility of obtaining high-quality yarn without sharp thickenings and the stability of the spinning process (without increasing the existing breakage) by pre-stretching the fiber bundle together with the main rotor in the exhaust hose.

The wiring between the extra pair and the suction pair is equal to the average fiber length,

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1. A method for producing shaped pr - consisting in pulling in

performed intermittently.

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Claims (3)

(Claim 1583495 '6 double-zone roving hood for fixing yarn, feeding an additional pair of rollers into the roving hood to create a shaped effect on the yarn, forming bundles of fibers by breaking the roving to form a shaped effect in the area between the pair of hoods and additional pairs of rollers, connecting bundles of fibers with rovings drawn in the exhaust device, followed by their combined pulling and twisting of the slippers coming out of the exhaust device into fancy yarn, characterized in that, with the aim of improving the quality of fancy yarn, breaking the rovings to form a fancy effect is carried out in zone ¹ between the supply pair of the exhaust device and an additional pair of rollers with a wiring between them equal to the average length of the roving fibers to form a fancy effect. 2. The method according to claim 1, characterized in that the supply of rovings for the formation of shaped effect 3Q is carried out intermittently. 1. The method of obtaining shaped straight- FIG. 2 Fig.Z Composer N. Timofeeva