RU2807097C1 - Method for producing double-twisted cotton yarn on spinning and twisting machine - Google Patents

Abstract

FIELD: textile industry.

SUBSTANCE: invention can be used to produce cotton spun yarn based on the inclusion of short flax fibre in the fibre mixture at the stage of preparing the semi-finished product for spinning. In this method, a false torsion is applied to the spinning strand coming out of the drawing device of the machine, the connected strands are introduced into the axial channel of the spindle from its upper end, twisted with the spindle in its axial channel into a twisted thread and wound it onto the receiving package. As the spinning strand coming out of the drawing machine, a thread obtained from a roving with the following composition is used: cotton fibre - from 30 to 60 wt.% and short flax fibre - from 40 to 70 wt.%. In this case, the linear density of the roving varies in the range of 400–627 tex, and cotton yarn with a linear density of 18.5–29 tex is used as the strand coming off the rotating package. As a result, double-twisted cotton yarn is obtained with a linear density of 18.5 × 2 tex to 29 × 2 tex containing cotton fibre 65-80 wt.% and short flax fibre 20-35 wt.%.

EFFECT: invention makes it possible to expand technical and assortment capabilities by producing double twisted cotton thread using short flax fibre.

1 cl, 5 dwg, 7 ex

Description

The invention relates to the textile industry and can be used to produce cotton spun yarn based on the inclusion of cotonine in the fiber mixture at the stage of preparing the semi-finished product for spinning.

Twisted yarn is characterized by increased strength and various visual effects of textile products. From twisted yarn you can get fancy yarn, and as a result, expand the range of textile products (fabrics, knitwear, tapestry).

In the production of linen yarn, subsequently fabrics and knitwear, long flax fibers are used, which make up 25-35% of the total volume of the fibrous mass. The remaining 65-75% consists of short fibers (waste). Therefore, of particular interest to manufacturers is the possibility of producing twisted cotton yarn using cotonin (linen waste), given that there is no developed technology to ensure its production.

Usually, to obtain twisted yarn, it is necessary to obtain cotton yarn, and then, after caning on reeding machines and twisting on twisting machines, obtain twisted yarn.

However, on ring spinning machines, the complexes of flax fibers and fire contained in the sliver coming out of the drafting device cause yarn breakage in the “ring-runner” zone. Thick, rigid flax fibers with the ring spinning method are poorly woven into the body of the yarn and increase its hairiness, which can cause allergic skin reactions.

Cotton yarn, moving from the drawing device to the place where the cob is formed, experiences tension of varying magnitudes. It is known that cotton yarn experiences maximum tension between the runner and the cob. Although the tension at the point of contact of the cotton yarn with the cob is greater than at the point of contact with the runner, breakage mainly occurs at the contact with the runner.

Production studies have shown that the cause of breakage is the presence of weeds and bonfires in cotton yarn. Therefore, the production of cotton yarn by the ring spinning method using existing equipment at the stages of preparing the semi-finished product and obtaining cotton yarn is impractical.

Another way to obtain twisted yarn is to use a double twist machine, however, to obtain a bobbin of flax yarn for threading the machine, you need to use a ring spinning method, which is also not advisable.

If we take bobbins produced on a rotor spinning machine, the breaking load of the twisted yarn will be significantly lower than the twisted yarn produced on a spinning-twisting machine.

There is a known method for producing double twisted thread [A.S. No. 106123 USSR, MKI D01H 7/88 (2000). Method for producing double twisted thread from any type of fiber / P.K. Korikovsky. - No. 454685; application 02/13/1956; publ. 17.05. 1957, Bull., No. 4.], in which the spun thread and the thread coming off the cob mounted on the hollow spindle of a ringless spinning machine are simultaneously threaded through an elastic washer into the spindle cavity, twisted together in the direction opposite to the twist of the spun thread, and an output from the spindle cavity, a finished double twisted thread is wound onto a bobbin.

The disadvantage of this method is that double twisted cotton thread using cotonin (short flax fiber) was not obtained in this way.

There is a known method for producing twisted yarn on a spinning-twisting machine [Pat. No. 1831528 USSR, MKI D02G 3/28, 3/38. Method for producing twisted yarn on a spinning-twisting machine / A.V. Paramonov - No. 5015789; application 09.12.91; publ. 07.30.93, Bull., No. 28], which consists in unwinding a twisted component from a package rotating on a spindle, connecting it with the spinning component coming out of the drawing device and having a high linear density, twisting the spinning component in the area between the drawing device and the entrance to the axial spindle channel, passing both components together along the axial channel of the spindle and twisting them into a twisted yarn.

The disadvantage of this method is that double twisted cotton thread using cotonin (short flax fiber) was not obtained in this way.

The prototype is a method for producing twisted yarn on a spinning-twisting machine [A.S. No. 1796703 USSR, MKI D02G 3/28, D01H 7/88. Method for producing twisted thread from two strands on a hollow spindle of a spinning-twisting machine / V.N. Tikhonov and Yu.N. Tikhonov. - No. 4825483/12; appl. 05/21/90; publ. 02.23.93, Bull., No. 7], which consists in the fact that the spinning strand coming out of the drawing device of the machine is given a false torsion by applying a torque to it in the area between the drawing device and the junction of the spinning strand at the top of the spindle with the one coming off the one being rotated by it packages with a strand in the form of a thread, insert the connected strands into the axial channel of the spindle from its upper end, twist them with a spindle in its axial channel into a twisted thread and wind it onto the receiving package.

The disadvantage of this method is that double-twisted cotton thread using cotonin (short flax fiber) was not obtained on a spinning machine in this way.

The technical result of the claimed invention is the expansion of technical and assortment capabilities due to the production of double twisted cotton thread using cotonine (short flax fiber).

The specified technical result is achieved by the fact that in the method of producing double twisted thread on a spinning-twisting machine, which consists in the fact that the spinning strand coming out of the drawing device of the machine is imparted a false torsion by applying a torque to it in the area between the drawing device and the junction of the spinning strand at the top of the spindle with a strand in the form of a thread coming off the package it rotates, insert the connected strands into the axial channel of the spindle from the side of its upper end, twist them with a spindle in its axial channel into a twisted thread and wind it onto the receiving package, according to the invention , as an output from the drawing device of the spinning strand machine, a thread obtained from a roving of the composition is used: cotton fiber - from 30 to 60 wt.% and cotonin (short flax fiber) - from 40 to 70 wt.%, while the linear density of the roving varied within 400 - 627 tex, cotton yarn with a linear density of 18.5 - 29 tex is used as the strand coming off the rotating package, as a result, cotton twisted yarn with a linear density of 18.5 × 2 tex to 29 × 2 tex is obtained, containing cotton fiber 65 - 80 wt. % and cotonine 20 - 35 wt.%.

The invention is illustrated by drawings, where in Fig. 1 shows a diagram of producing cotton strand and connecting it with cotton yarn to produce twisted cotton yarn on a spinning-twisting machine; FIG. 2,3,4,5 - photos of fabrics and products made from twisted cotton yarn obtained on a spinning-twisting machine.

The invention is carried out as follows.

The technological process for producing twisted cotton yarn is characterized by the fact that at the stage of preparing a semi-finished product containing cotonine, a roving was obtained, the linear density of which varied from 400 to 627 tex, the content of cotton fiber was from 30 to 60 wt.% and cotonine (short flax fiber) - from 40 to 70t wt.%. This roving was sent to the spinning-twisting machine to produce cotton spun yarn with linear density from 18.5 × 2 tex to 29 × 2 tex, containing cotton fiber 65 - 80 wt.%, and cottonine 20 - 35 wt.%.

Double-twisted cotton yarn was produced on a PK-100 spinning-twisting machine, on which bobbins with roving 1 (Fig.), the cotonine content in which varied from 40 wt.% to 70 wt.%, were installed in the frame of the machine. The roving with a linear density from 400 to 627 tex passed through a drawing device 2, where it was stretched and thinned to obtain an exiting splint 3 (the first strand) with a linear density from 18.5 to 29 tex.

A cob with cotton yarn 5 (second strand), obtained on a conventional ring spinning machine, is put on the hollow spindle 4 of the machine (Fig.). When the cob with yarn 5 rotates, the ballooning thread 6 coming off it, rotating, carries along the splinter 3, forcing it to rotate around its own axis, and thereby turns the splint 3 into yarn (the first strand). Rotation of the spindle is transmitted from the drum by a braid that covers block 7.

At the top of the spindle, the spinning cotton sliver 3 (the first strand) and the cotton thread 6 (the second strand), unwound from the cob 5, take place, i.e. The process of tweezing two strands is carried out. The stitched thread 8 is pulled through the channel of the spindle 4, which works like a reel, by a pulling pair 9, consisting of a cylinder and a pressure roller. On the way from the top of the spindle to the draw pair, the two strands are twisted in the opposite direction.

The finished double twisted mixed cotton yarn with a linear density of 18.5 × 2 tex - 29 × 2 tex, containing cotton 65 - 80 wt.%, and cottonine 20 - 35 wt.%, is wound on a cylindrical cartridge 10 by a winding mechanism 11.

Examples of practical implementation of the method.

Example 1

On the spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 400 tex is installed, having a twist of 55 kr/m and consisting of 60 wt.% cotton and 40 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 41.

The spinning strand 3 is given a false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a cotton thread with a linear density of 18.5 tex and the spinning thread 3 with a linear density of 18 .5 tex are connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with a spindle in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 is linear density 18.5 × 2 tex, having a twist of 670 cr/m, contains 20 wt.% cottonine and 80 wt.% cotton.

Example 2

On a spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 454 tex is installed, having a twist of 52 kr/m and consisting of 55 wt.% cotton and 45 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 43.

The spun strand 3 is given false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a thread made of cotton with a linear density of 21 tex and the spun thread 3 with a linear density of 21 tex is connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with the spindle 4 in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 has a linear density of 21 × 2 tex, having a twist of 639 cr/m, contains 22.5 wt.% cotonine and 77.5 wt.% cotton.

Example 3

On the spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 476 tex is installed, having a twist of 50 kr/m and consisting of 50 wt.% cotton and 50 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 44.

The spinning strand 3 is given a false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a thread made of cotton with a linear density of 22 tex and the spinning thread 3 with a linear density of 22 tex is connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with the spindle 4 in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 has a linear density of 22 × 2 tex, having a twist of 610 cr/m, contains 25 wt.% cotonine and 75 wt.% cotton.

Example 4

On a spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 519 tex is installed, having a twist of 48 kr/m and consisting of 45 wt.% cotton and 55 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 46.

The spinning strand 3 is given a false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a thread made of cotton with a linear density of 24 tex and the spinning thread 3 with a linear density of 24 tex is connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with a spindle in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 has a linear density of 24 × 2 tex, having a twist of 597 kr/m, contains 27.5 wt.% cotonine and 72.5 wt.% cotton.

Example 5

On the spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 540 tex is installed, having a twist of 47 kr/m and consisting of 40 wt.% cotton and 60 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 49.

The spinning strand 3 is given a false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a thread made of cotton with a linear density of 25 tex and the spinning thread 3 with a linear density of 25 tex is connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with the spindle 4 in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 has a linear density of 25 × 2 tex, having a twist of 561 cr/m, contains 30 wt.% cotonine and 70 wt.% cotton.

Example 6

On a spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 584 tex is installed, having a twist of 45 kr/m and consisting of 35 wt.% cotton and 65 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 50.

The spun strand 3 is given false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a thread made of cotton with a linear density of 27 tex and the spun thread 3 with a linear density of 27 tex is connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with the spindle 4 in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 has a linear density of 27 × 2 tex, having a twist of 549 cr/m, contains 32.5 wt.% cotonine and 67.5 wt.% cotton.

Example 7

On the spinning-twisting machine PK-100, a roving of 1 (drawing) with a linear density of 627 tex is installed, having a twist of 40 cr/m and consisting of 30 wt.% cotton and 70 wt.% cottonin (short flax fibers), which is tucked into the draft device 2. The total exhaust in the exhaust device is 21.63. At the same time, the number of teeth of the replacement gear is 118 and 52.

The spinning strand 3 is given a false torsion by applying a torque to it in the area between the drawing device 2 and the top of the spindle 4. The strand 6 coming off the spindle 4, which is rotated by the spindle 4, is in the form of a thread made of cotton with a linear density of 29 tex and the spinning thread 3 with a linear density of 29 tex is connected at the top of the spindle 4 and both strands are inserted into the axial channel of the spindle 4 from its upper end, twisted with the spindle 4 in its axial channel into a twisted thread 8 and wound the latter onto the receiving package 10. In this case, the finished twisted double thread 8 has a linear density of 29 × 2 tex, having a twist of 528 cr/m, contains 35 wt.% cotonine and 65 wt.% cotton.

The resulting cotton spun yarn was used as warp and weft in the production of workwear fabric.

In addition, the resulting twisted cotton yarn was used in the production of suit fabric (Fig. 2, 3), bedsheet fabric (Fig. 4), and curtain fabric (Fig. 5).

This indicates an expansion of technical and assortment capabilities due to the production of double-twisted cotton thread using cottonin on spinning-twisting machines.

Claims (1)

A method for producing double-twisted cotton yarn on a spinning-twisting machine, which consists in the fact that the spinning strand coming out of the drawing device of the machine is given false torsion by applying a torque to it in the area between the drawing device and the junction of the spinning strand at the top of the spindle with the one coming off the rotating one. they are packaged with a strand in the form of a thread, the connected strands are inserted into the axial channel of the spindle from the side of its upper end, twisted with a spindle in its axial channel into a twisted thread and wound it onto the receiving package, characterized in that the strand is spun out as a spinning strand emerging from the drawing machine use thread obtained from roving composition: cotton fiber - from 30 to 60 wt. % and short flax fiber - from 40 to 70 wt. %, while the linear density of the roving varies between 400-627 tex; cotton yarn with a linear density of 18.5-29 tex is used as the strand coming off the rotating package; as a result, double twisted cotton yarn with a linear density of 18.5 × 2 tex is obtained. up to 29 × 2 tex, containing cotton fiber - 65-80 wt. % and short flax fiber - 20-35 wt. %.