RU1790639C - Method for lisle thread working - Google Patents

Abstract

Usage: textile industry, spinning and torsion production. SUMMARY OF THE INVENTION: In two spinning chambers of a pneumomechanical spinning machine, two single yarns are formed, which are reed and fed into a rotary centrifuge of a centrifugal machine. The strand in the form of a yarn is twisted by a centrifuge and a cake is formed from it. After the cake is completed, the strand is drawn through the centrifuge, connected in the axial channel of the hollow centrifuge spindle with the twisted strand by winding it from the rotating cake and twisted the strands into the twisted yarn in the direction opposite to the direction of the torsion of the strand when forming the cake. The twisted yarn is withdrawn from the axial channel of the centrifuge hollow spindle and wound onto the output package. 1 s.p. f-ly, 1 ill.

Description

The invention relates to the textile industry and relates to a method for the single-pass production of twisted yarn, which can be used in the clothing industry and for the manufacture of articles for technical purposes.

There is a known method for producing twisted yarn, according to which the strand is fed into a centrifuge rotating centrifuge, the strand is twisted in it, the cake is formed from the twisted strand in the centrifuge, after the cake is formed, the strand is drawn through the centrifuge, connected to it in the axial channel of the hollow centrifuge spindle with a twisted strand by winding it from a rotating Easter cake, twist the strands into a twisted yarn in the direction opposite to the direction of torsion of the strand when forming a Easter cake, withdraw the twisted yarn from axial

centrifuge hollow spindle channel and wound on the output package.

The disadvantage of this method is the multi-junction of the formation of twisted yarn due to the formation of single yarns, their friction on individual edges, which leads to a decrease in the productivity of the method.

An object of the invention is to increase productivity.

The goal is achieved in that a strand of yarn is used as a strand, at least one single yarn is formed in a spinning chamber of a pneumomechanical spinning machine, and after being withdrawn from the spinning chamber, it is continuously fed to a centrifuge, wherein the formation of the cut yarn is carried out before entering the centrifuge.

Xi

SO

About About CO

about

with

When forming a yarn, a single yarn is combined with a multifilament yarn.

The drawing shows a General diagram of a device for implementing the method.

According to the method of laid in a basin

I of fibrous tapes 2, for example, in two spinning chambers 3 of a pneumomechanical spinning machine, two single yarns 4 are formed, which are fed continuously by rollers 5 to the centrifuge 6 of the centrifugal machine. Before entering the centrifuge, a single yarn cane, formed in the form of a yarn yarn, strand 7 is passed through the pipe 8 of the spreader 9 of the centrifugal machine and fed to the rotating centrifuge 6. The centrifuge strand 7 is informed of a twist and a cake is formed from strand 7, 10. After the formation of the cake is completed, the strand 7 is drawn through a centrifuge, the twisted strand is introduced into the downstream tube 8 of the threading machine by the air flow

II and connected to it in the axial channel of the centrifuge hollow spindle 12 by winding the twisted strand from the Easter cake 10. The connected strands are twisted into the twisted yarn 13 in the direction opposite to the torsion direction of the strand 7 during the Easter cake formation. The twisted yarn 13 is withdrawn from the centrifuge by the exhaust rollers 14 and wound onto the output package 15.

The resulting twist yarn 13 in four additions is two-twisted, due to the fact that when the torsion is twisted and the cake is formed, the first torsion is given to it, and after connecting the tricotted strand to the twisted cake from the cake, they are informed of the second torsion in the opposite direction, in which the tricky gets the twist of the direction coinciding with the twist direction of the twisted yarn, and the twisted strand unwinds and loses part of its twist obtained during the formation of the Easter cake.

A two-strand yarn with a right-left-left twist direction (ZZS) is an optimal structural element for fabrics for clothing and technical purposes, and can also be used to produce high-quality thread haberdashery and knitwear. The effectiveness of double-twisted yarn of cotton fiber tape can be judged by the degree to which its strength is used in the breaking load of yarns of various structures. If, for example, for a single-thread yarn of a rotor spinning yarn, this indicator is in the range of 35-40%,

for a single-crocheted yarn of 2 additions within the range of 45-50%, then for a double-crocheted yarn it reaches 60%. A positive factor in the formation of double-crocheted yarn is

the possibility of choosing the optimal twist ratio in order to give it increased resistance to repeated abrasion deformations, as well as to achieve complete equilibrium of the yarn, which provides normal conditions for its further processing.

An embodiment of the method is possible in which one single yarn formed in the spinning chamber is joined together with a chemical multifilament yarn 16 wound from the package 17.

PRI me R 1. From cotton fibers with a breaking load of 24 cN / tex, two are formed in two dope chambers

0 single yarn of a Z-twist and a linear density of 25 tex that cane and give a chopped right Z-twist. The single-strand yarn is then joined to the mowed yarn and twisted with an S-twist. In received

5 double twisted yarn 25 tex x 2 x 2 ZZS, the coefficient of utilization of fiber strength is 0.54, and the specific endurance of the yarn to abrasion deformation reaches 4.7 cycles / tex.

0 EXAMPLE 2. Formed of their cotton fibers in a spinning chamber, a single yarn of linear density of 22 tex Z-twists equal to 1066 kr / m is connected to a complex dacron yarn of linear

5 densities of 28 tex and with an S-twist of 200 lap / m and twist with an S-twist of 420 torsion / m. The single-strand yarn is connected to the mowed yarn and then co-twisted with a Z-twist of 420

0 twist / m. The resulting twisted yarn has the structure (22 + 28) tex x 2ZSZ.

For continuous operation of a single-junction technological device, it is necessary to coordinate the speeds of the twisting mechanisms. So, for example, when yarn is produced with a linear density of 22 tex with a twist of 1066 kr / m on a BD-200 machine with a rotor speed of 36,000 min, the single-yarn output speed will be

0 is 33.8 m / min, and since the combined yarn of linear density 100 tex is produced with a twist of 420 torsion / m, the rotational speed of the centrifuge should be 14,200.

5 This method allows to increase the productivity of the process of obtaining twisted yarn.

Claims (2)

The method of producing twisted yarn, according to which the strand is fed into a centrifuge rotary centrifuge of the centrifuge, the strand is twisted in it, the cake is formed from the twisted strand in the centrifuge, after the cake is formed, the strands are drawn through the centrifuge, connected in the axial channel a centrifuge hollow spindle with a twisted strand by winding it from a rotating Easter cake, twist the strands into a twisted yarn in the direction opposite to the direction of torsion of the strand when forming a cake, the output is steeper th yarn in the axial channel of the hollow spindle centrifuge and wound on a package at the output of m and l h a0 moreover, and so that, in order to increase productivity, a strand of yarn is used as a strand, at least one single yarn is formed in the spinning chamber of the rotor spinning machine and after it is withdrawn from the spinning chamber continuously fed to the centrifuge, wherein the formation of the yarn was carried out before being introduced into the centrifuge. 2. The method according to claim 1, characterized in that when forming the mated yarn, a single yarn is connected to a multifilament yarn. P K