CN116590823A - Soft wear-resistant yarn and its spinning device and spinning method - Google Patents

Abstract

The invention provides a soft wear-resistant yarn, a spinning device and a spinning method thereof, wherein a negative pressure suction mechanism is utilized to uniformly spread short fiber wide fiber strips on a grid ring, and negative pressure holding type short fibers with certain width and fiber height which are parallel and uniformly distributed are obtained on the grid ring; meanwhile, the distance between the core yarn and the short fiber wide whisker strips on the front roller is ensured to be 2-5mm, so that the core yarn formed by the wrapping area and the core yarn conveyed to the grid ring are on the same straight line, and form a y-shaped structure with the short fiber wide whisker strips conveyed to the grid ring, the fine denier flat-shaped core yarn rotates to form a uniform spiral structure, the core yarn rotates to enable the core yarn, the wrapping yarn and part of the short fiber wide whisker strips close to the core yarn to mutually twist, and uniform pores are formed between the spiral structure and the wrapping yarn and part of the short fiber wide whisker strips close to the core yarn, so that a spiral, uniform pore and fluffy clamping type core layer structure is obtained; and then wrapping and winding part of the short fiber wide fiber strips far away from the core wire on the core layer to obtain the soft wear-resistant yarn.

Description

Soft wear-resistant yarn and its spinning device and spinning method

technical field

The invention relates to the technical field of textile processing, in particular to a soft and wear-resistant yarn, a spinning device and a spinning method thereof.

Background technique

With the continuous improvement of living standards, people's requirements for textiles are getting higher and higher, and the preparation of high-comfort flexible fabrics has become a research hotspot. In addition, the core-spun yarn generally uses synthetic fiber filaments with good strength and elasticity as the core yarn, and is twisted and spun with short fibers such as outsourcing cotton, wool, and viscose fibers. It is also called composite yarn or covered yarn. Yarn is a new type of yarn that has both the excellent properties of filament core yarn and outsourcing short fiber. Therefore, the flexible and wear-resistant core-spun yarn not only has high comfort, but also has the characteristics of excellent performance and long service life of the core yarn and the outer covering material, and is loved by people.

Currently, ring spinning is a mainstream technology for preparing core-spun yarns. Ring spinning core-spun yarn is a filament feeding device added to the ordinary ring spinning machine, so that the filament is fed from the middle of the fiber strands, and the staple fibers are wrapped around the periphery by the rotary twisting of the balloon. A core spun yarn is formed. The patent with the application number CN202111337262.3 discloses a core spinning device and a new structure core spinning method with full covering of the macro core. An auxiliary core wrapping device is added between the guide hook and the auxiliary core wrapping device. The auxiliary core wrapping device includes a first yarn path for conveying the outer wrapping material, a second yarn path for conveying the core layer material and a wrapping point for wrapping and merging. During the spinning process, the staple fiber strands and filaments form a "y"-shaped twisted structure with the filaments in a straight state, the filaments remain straight at the wrapping point, and the staple fibers The core-spun yarn with good covering effect is formed by relying on the twisting rotation of the filament and part of its own twist wrapped around the outer layer of the filament. However, the core-spun yarn obtained by this device is the way that the core yarn rotates and wraps the staple fiber strands. The yarn is made of a straight core yarn as the core and spirally wrapped staple fiber strands as the sheath, resulting in the core yarn and the outer covering fiber It is easy to slide and fall apart, and the interface bonding force between the covering layer and the core yarn is weak, so the wear resistance is poor; meanwhile, the softness of the obtained core-spun yarn needs to be improved.

In view of this, it is necessary to design an improved soft and wear-resistant yarn and its spinning device and spinning method to solve the above problems.

Contents of the invention

The purpose of the present invention is to provide a kind of soft and wear-resistant yarn and its spinning device and spinning method. Spread the short fiber wide strips evenly on the grid circle, spread them in the width and length directions, and obtain negative pressure holding staple fibers with a certain width, parallel fiber height and uniform distribution on the grid circle; At the same time, ensure that the distance between the core yarn and the staple fiber wide strands on the front roller is 2-5mm, so that the core yarn formed in the wrapping area is in a straight line with the core yarn delivered to the grid ring, and is in line with the delivery to the net. The short fiber and wide whiskers on the lattice ring form a "y"-shaped structure, and the fine denier flat core filaments rotate to form a uniform spiral structure. The wide fiber strands are twisted together, so that uniform pores are formed between the helical structure and the part of the short fiber width strands close to the core yarn, and the helical, uniform and fluffy fibers are clamped close to the core by the wrapping yarn and the core yarn. The clamping core layer structure of part of short fiber and wide strands of silk; then part of short fiber and wide strands far away from the core yarn is further wrapped and wound on the core layer under the rotation of the core yarn to obtain a soft and wear-resistant yarn.

To achieve the purpose of the above invention, the present invention provides a soft and wear-resistant yarn spinning device, including a feeding unit, an auxiliary core-spun unit and a core-spun yarn winding unit;

The feeding unit includes a bag/core yarn feeding unit, a staple fiber wide sliver feeding unit and a front roller located at the input end of the auxiliary core-spun unit; The fine-denier flat core wire and the fine-denier flexible covering wire; the covering wire is arranged in the 1/2 width of the side of the short fiber wide beard near the core thread, and the core thread and the short fiber wide beard The spacing of the strips on the front rollers is 2-5 mm;

The auxiliary core wrapping unit includes a negative pressure adsorption assembly, a transmission gear, and a wrapping area for wrapping and merging; the negative pressure adsorption assembly includes a special-shaped plate, a transmission roller, and is set on the outer surface of the special-shaped plate and the transmission roller The grid ring; the special-shaped plate is provided with a negative pressure suction port, and the negative pressure suction port is provided with a negative pressure suction mechanism; the front roller, the transmission gear and the transmission roller are meshed and connected;

The staple fiber wide strands and the wrapping filaments intersect and merge with the core filaments at the wrapping area to form a part of the staple fiber wide strands that are clamped by the wrapping filaments and the core filaments close to the core filaments The helical structure is a soft and wear-resistant yarn with a core, and the part of the staple fiber away from the core is a sheath, and then the soft and wear-resistant yarn is transmitted to the core-spun yarn winding unit for twisting and winding.

As a further improvement of the present invention, the fine-denier flat core filament is one of water-soluble fiber or water-insoluble fiber, and the monofilament width is 10-80 μm; the monofilament fineness of the wrapped filament is 0.3- 1.0dtex.

As a further improvement of the present invention, the softness of the soft wear-resistant yarn is more than 20% higher than that of the core-spun yarn of the same specification, the wear resistance is higher than 30%, and the minimum linear density is 2.1tex.

As a further improvement of the present invention, the width of the negative pressure air inlet is greater than or equal to the width of the wide short fiber strands.

As a further improvement of the present invention, the soft wear-resistant yarn formed through the wrapping area is in a straight line with the core filament fed to the mesh ring, and is aligned with the core filament fed to the mesh ring. The wide strands of the short fiber and the wrapped silk converge to form a "y" shape;

The short fiber wide strands fed in front of the wrapping area are in a straight line.

As a further improvement of the present invention, it also includes an auxiliary conveying unit arranged above the negative pressure adsorption assembly; the auxiliary conveying unit includes a front top roller, a transmission top roller, and a front top roller and the transmission top roller The bridge part between; the shaft core of the front top roller, the bridge part and the shaft core of the transmission top roller are connected; the front top roller and the front roller are arranged correspondingly up and down, and the transmission top roller The rollers are set up and down corresponding to the transmission rollers; the transmission top rollers are in contact with the mesh rings.

As a further improvement of the present invention, the distance between the wrapping area and the nip of the front roller is greater than the fiber length of the wide short fiber strands.

As a further improvement of the present invention, the short fiber wide sliver feeding unit includes a bell mouth, a rear roller and a rear top roller, a middle roller and a middle top roller for feeding the short fiber wide sliver;

The bag/core yarn feeding unit includes a guide wheel for guiding the core yarn and the wrap yarn;

The auxiliary core-spun unit also includes a yarn guide rod arranged between the wrapping area and the core-spun yarn winding unit; the middle part of the yarn guide rod is provided with a first recess for positioning the core-spun yarn groove;

The core-spun yarn winding unit includes a yarn guide hook, a traveler, a steel ring and a spun tube, the core-spun yarn enters the balloon twisting section through the yarn guide hook, and the fibers of the outer layer of the core-spun yarn are During this process, twisting is further carried out, and finally the traveler is wound on the spun bobbin through the rotation of the traveler on the steel ring.

In order to achieve the purpose of the above invention, the present invention also provides a spinning method for soft wear-resistant yarn, which uses the spinning device for soft wear-resistant yarn described in any one of the above to perform core-spun spinning, specifically comprising the following steps:

S1'. Feed the staple fiber wide strands, fine denier flexible wrapping filaments and fine denier flat core filaments arranged at intervals from the feeding unit to the auxiliary core wrapping unit;

S2'. The wrapping yarn is set within 1/2 width of the side of the short fiber wide beard near the core wire, and the short fiber wide beard and the core wire are fed at a distance of 2-5mm In the front nip formed by the engagement of the front roller and the front top roller, the front nip is output to the mesh ring; The mechanism absorbs and grips, and evenly spreads on the grid circle with a certain width and fiber parallelism; the core filament rotates to drive the short fiber wide strands and wrapping filaments to wrap and wrap in turn at the wrapping area. The outer layer of the core wire forms a soft soft fabric with a helical structure in which the wrapping wire and the core wire clamp a part of the short fiber wide strands close to the core wire as the core, and a part of the short fiber wide strands far away from the core wire as the sheath. wear-resistant yarn;

S3'. The soft wear-resistant yarn is then twisted and wound by the core-spun yarn winding unit.

In order to achieve the purpose of the above invention, the present invention also provides a soft and wear-resistant yarn, which is spun by the above-mentioned spinning method for soft and wear-resistant yarn.

The beneficial effects of the present invention are:

(1) The spinning device of the soft and wear-resistant yarn provided by the present invention simultaneously feeds the fine denier flat core filaments and the fine denier flexible covering filaments arranged at intervals through the covering/core filament feeding unit, while ensuring that the covering filaments are arranged at Within 1/2 of the width of the staple fiber side close to the core filament, the short fiber wide strands are evenly spread on the grid circle by using the negative pressure suction mechanism, and spread in the width and length directions. Negative-pressure gripping short fibers with a certain width, parallel fiber height and uniform distribution are obtained on the grid circle.

At the same time, ensure that the distance between the core yarn and the staple fiber wide beard/wrapping body on the front roller is 2-5mm, so that the core yarn formed in the wrapping area and the core yarn delivered to the grid ring are in a straight line, And it is combined with the short fiber wide beard/wrapped wire conveyed to the grid circle to form a "y" shape structure. The fine denier flat core wire rotates to form a uniform spiral structure. At the same time, the core wire rotates to make the core wire , covering wire and part of the short fiber width near the core wire are twisted together, and the covering wire and part of the short fiber width near the core wire are fixed to the helical structure formed by the rotation of the core wire. At the same time, the helical structure and the covering wire A uniform pore is formed between the part of the staple fiber and the short fiber width near the core wire, and a helical, uniform and fluffy clamping core layer with the wrapping wire and the core wire clamping the part of the short fiber wide beard near the core wire is obtained. structure; then part of the staple fiber wide strands far away from the core filament is further wrapped and wound on the core layer under the rotation of the core filament to obtain a soft and wear-resistant yarn. First of all, the yarn core layer and the outer covering layer of this structure are more tightly combined, there is no disadvantage that the core layer and the outer covering layer are easy to slip, and the wear resistance is increased; secondly, the spiral, uniform and fluffy core layer structure is large The softness of the yarn is greatly improved, and a soft and wear-resistant yarn with both wear resistance and softness is obtained.

(2) Compared with the yarn prepared by conventional core-spun composite spinning under the same conditions of other process parameters, the softness and abrasion resistance of the soft wear-resistant yarn of the present invention are improved by more than 20%, and the wear resistance is improved by more than 30%. The fineness of the thinnest yarn spun by the spinning method of the present invention is only 2.1tex.

Description of drawings

Fig. 1 is a structural schematic diagram of a spinning device for soft and wear-resistant yarn of the present invention.

Fig. 2 is a connection diagram of the negative pressure adsorption component and the auxiliary delivery unit.

Fig. 3 is a path diagram of forming a core-spun yarn from a staple fiber wide beard, a wrapping yarn and a core yarn.

Fig. 4 is a composition diagram of short fiber wide whiskers in Fig. 3 .

reference sign

S1-short fiber width; F1-wrapping; F2-core yarn; S3-soft and wear-resistant yarn; S11-short fiber width near core F2; S12-short fiber width away from core F2 beard;

10-feeding unit; 11-bell mouth; 12-rear roller; 13-rear top roller; 14-middle roller; 15-middle top roller; 16-yarn guide wheel; 17-front roller;

20-Auxiliary core-spun unit; 21-Negative pressure adsorption assembly; 22-Transmission gear; 23-Auxiliary conveying unit; 24-Guide rod; 25-Wrapping area; Circle; 214-negative pressure suction port; 231-front top roller; 232-transmission top roller; 233-bridge parts; 234-second groove;

30-core-spun yarn winding unit; 31-yarn guide hook; 32-traveler; 33-steel collar; 34-spinning bobbin.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and/or processing steps closely related to the solution of the present invention are shown in the drawings, and the steps related to the present invention are omitted. Invent other details that don't really matter.

Additionally, it should be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also Other elements not expressly listed, or inherent to the process, method, article, or apparatus are also included.

Referring to FIG. 1 to FIG. 4 , the present invention provides a soft and wear-resistant yarn spinning device, which includes a feeding unit 10 , an auxiliary core-spun unit 20 and a core-spun yarn winding unit 30 .

The feeding unit 10 includes a bag/core yarn feeding unit, a staple fiber wide sliver feeding unit and the front roller 17 positioned at the input end of the auxiliary core-spun unit 20; Flat core filament F2 and fine denier flexible wrapping filament F1; the wrapping filament F1 is set within 1/2 width of the staple fiber wide beard S1 near the core filament F2 side, the core filament F2 and the staple fiber wide beard close to the core filament F2 The spacing of the bar on the front roller 17 is 2-5mm. In this way, the core filament F2 and the staple fiber wide strands S1 form a certain distance when passing through the front roller 17 without being entangled directly, which provides conditions for the staple fiber wide strands to be smoothly transported to the subsequent auxiliary core wrapping unit 20, and at the same time Provide favorable conditions for the subsequent "y" shape structure.

The auxiliary core wrapping unit 20 includes a negative pressure adsorption assembly 21, a transmission gear 22 and a wrapping area 25 for wrapping and merging; the negative pressure adsorption assembly 21 includes a special-shaped plate 211, a transmission roller 212, and The grid ring 213 on the surface; the special-shaped plate 211 is provided with a negative pressure air suction port 214, and the negative pressure air suction port 214 is provided with a negative pressure air suction mechanism; the front roller 17, the transmission gear 22 and the transmission roller 212 are meshed and connected. The short fiber wide strands S1 input by the front roller 17 are transported to the grid ring 213. At the same time, the front roller 17 rotates, driving the transmission gear 22 to rotate, thereby driving the transmission roller 212 to rotate, and then driving the surface of the transmission roller 212. The grid circle 213 rotates, and the short fiber wide sliver S1 is transported to the negative pressure air inlet 214, and after being adsorbed and stretched by the negative pressure air suction port 214, the short fiber wide sliver S1 is evenly laid on the ground with a certain width and fiber parallelism. Grid circle 213 on. Then, under the continuous conveyance of the grid circle 213, the staple fiber wide strands finally merge with the core filament F2 and wrapping filament F1 output by the front roller 17 at the wrapping area 25, and the twisting formed by the rotation of the balloon makes the core filament F2 Rotation drives the staple fiber wide sliver S1 and wrapping yarn F1 to wrap and wind to the outer layer of the core yarn F2 to form a soft and wear-resistant yarn S3. Then the soft wear-resistant yarn S3 is transferred to the core-spun yarn winding unit 30 for twisting and winding.

Specifically, the fine-denier flat core filament F2 rotates to form a uniform spiral structure. At the same time, the core filament F2 rotates so that the core filament F2, the covering filament F1, and the part of the short fiber wide strands S11 close to the core filament F2 are twisted together. Combined, wrapping F1 and part of short fiber wide whiskers S11 close to core filament F2 fix the helical structure formed by the rotation of core filament F2, and at the same time Uniform pores are formed between the strips S11 to obtain a helical, uniform and fluffy core structure with the covering filament F1 and the core filament F2 clamping the part of the short fiber wide strand S11 close to the core filament F2; then, away from the core filament F2 Part of the staple fiber wide strands S12 is further wrapped and wound on the core layer under the rotation of the core filament F2 to obtain a soft and wear-resistant yarn S3. During this process, the evenly laid short fiber wide strands S1 are adsorbed on the grid ring 213 without rotation, and then the staple fiber wide strands S1 are wrapped under the synergistic effect of the core filament F2 and the wrapping filament F1 , forming a soft and wear-resistant yarn S3 with a special structure.

The width of the monofilament in the fine-denier flat core filament F2 is 10-80 μm, and the width of the core filament F2 is controlled within a thinner range. On the one hand, the helical degree of the helical structure formed by the rotation of the core filament F2 is tighter and more uniform , so that the core layer structure is more uniform and stable; on the other hand, the fineness of the obtained core-spun yarn is controlled within a finer range, so that the obtained soft wear-resistant yarn S3 has higher softness and wear resistance.

The core filament F2 is one of water-soluble fibers or water-insoluble fibers. When the core filament F2 is a water-soluble fiber, the obtained soft and wear-resistant yarn S3 is washed, and the core filament F2 is dissolved and removed to form a hollow structure, so that the core The layer structure is bulkier and the resulting yarn is softer.

The fineness of the monofilament in the fine denier flexible wrapped yarn F1 is 0.3-1.0dtex. First of all, the width of the wrapping F1 is also controlled within a thinner range, which not only makes the width of the wrapping F1 and the core F2 more matched, but also makes the winding of the wrapping F1 and the core F2 more firm and increases the wear resistance; and Further control the fineness of the obtained core-spun yarn within a finer range; secondly, the fiber-wrapped F1 is flexible, and while reinforcing the helical structure of the core layer, it will not bind the helical structure, thereby not affecting the helical structure The torsion will not affect the softness of the obtained soft wear-resistant yarn S3.

The short fiber wide sliver S1 that is input to the front roller 17 is a spreading shape. The width of the staple fiber wide sliver S1 is also controlled within a certain range to ensure wrapping without excessive wrapping, thereby improving the softness of the soft wear-resistant yarn S3.

In some embodiments, the width of the negative pressure air inlet 214 is greater than or equal to the width of the short fiber wide sliver S1, so that the short short fiber wide sliver S1 is stretched in both the longitudinal direction and the transverse direction, and the thickness tends to be uniform, and then uniform and flat. At the same time, the staple fiber wide sliver S1 is also stretched by the stretching force in the conveying direction, so that the single fiber is straightened. Under the coordinated stretching of the two forces in the width and length directions, the staple fiber wide sliver S1 will neither It will not be broken if it is excessively widened to cause a gap, and finally a fiber layer with a certain width and a fiber height parallel and evenly distributed is obtained on the mesh circle 213. Therefore, in the wrapping process, the wrapping is more compact Uniform and thinner, resulting in thinner yarns with a uniform helical structure. In addition, the negative pressure suction port 214 can also capture the uncontrolled floating fibers in the short wide sliver S1 and the second short short wide sliver S2.

The negative pressure suction port 214 is one of a structure with equal width up and down or a narrow top and wide bottom structure. Preferably, the negative pressure suction port 214 is a narrow upper and lower wide structure, that is, the negative pressure suction port 214 is narrower near the end of the feeding unit 10 (still not less than the width of the staple fiber wide sliver S1 conveyed by the front roller 17), The end away from the feeding unit 10 is wider. Such setting can make the staple fiber wide strands S1 on the mesh ring 213 laid more flat, thinner and more uniform, so that the spiral structure and surrounding wrapping structure of the obtained soft wear-resistant yarn S3 are more uniform and the performance is better.

Particularly, as shown in Figure 3, the soft and wear-resistant yarn S3 formed by the wrapping area 25 is in a straight line with the core filament F2 delivered to the mesh circle 213, and is in line with the staple fiber width delivered to the mesh circle 213. Both the strands S1 and the wrapped wire F1 form a "y"-shaped structure. In this way, since the soft wear-resistant yarn S3 from bottom to top is in a straight line with the core filament F2 delivered to the grid circle 213, the twist formed by the balloon rotation is transferred from bottom to top to the wrapping area 25, and then Most of the twists are transmitted to the core filament F2, so that the twist and tension of the core filament F2 are much greater than the twist and tension of the staple fiber wide sliver S1, making it dominant in the twisting process, providing sufficient The power of rotation keeps it in a straight state at the same time; and only a small part of the twist is transmitted to the staple fiber wide sliver S1, and at the same time, the suction force of the short fiber wide sliver S1 by means of the negative pressure suction port 214 further reduces the The twist of the wide strand S1 is such that it is flatly laid on the grid circle 213, and driven by the rotation of the core filament F2 to be evenly wrapped on the core filament F2.

The staple fiber wide sliver S1 input before the wrapping area 25 is in a straight line, which further hinders the twist transmission of the staple fiber wide sliver S1, thereby reducing the twist and tension of the staple fiber wide sliver S1 again.

The extension line of the core wire F2 input to the grid circle 213 before the wrapping area 25 is not on a straight line with the fed core wire F2, so that the core wire F2 is input into the grid circle 213 in the form of a broken line, further increasing the core wire F2 The tension is to provide auxiliary conditions to ensure that the core filament F2 is in a stretched state at the wrapping area 25, so as to improve the wrapping effect.

In some embodiments, the distance between the wrapping area 25 and the nip of the front roller 17 is greater than the fiber length of the wide staple S1. In this way, firstly, the single fiber in the staple fiber wide sliver S1 can be stretched enough to be straightened; secondly, the larger length further increases the twist and tension of the core filament F2, which is beneficial to the rotation of the core filament F2 to drive the short fiber. Slender wide sliver S1 is wrapped; Thirdly, the high-speed rotation of the core filament F2 can also produce a certain drafting effect on the staple wide sliver S1, which further improves the yarn quality.

The spinning device for soft and wear-resistant yarn also includes an auxiliary conveying unit 23 arranged above the negative pressure adsorption assembly 21 . The auxiliary conveying unit 23 includes a front top roller 231 , a transmission top roller 232 and a bridge member 233 arranged between the front top roller 231 and the transmission top roller 232 . The shaft core of the front top roller 231, the bridge part 233 and the shaft core of the transmission top roller 232 are connected, and the bridge part 233 can play the role of structural fixation and top roller positioning. As shown in FIG. 2 , the front top roller 231 is set up and down correspondingly to the front roller 17 , and the driving top roller 232 is set up and down correspondingly to the driving roller 212 . The transmission top roller 232 is in contact with the grid ring 213, and the joint action of the transmission top roller 232 and the transmission gear 22 drives the rotation of the grid ring 213. Such setting makes the transmission of the grid ring 213 more stable, and provides a stable environment for the wrapping process. condition.

In some embodiments, the middle part of the driving top roller 232 is provided with a second groove 234 for passing the soft and wear-resistant yarn S3; one-third. So set, the convex structure of both ends of the transmission top roller 232 is more convenient to press the grid ring 213 and drive it to rotate and convey; at the same time, the second groove 234 is more convenient to form the soft wear-resistant yarn S3 from the transmission top roller 232 and the mesh. Pass between grid circles 213.

The auxiliary core wrapping unit 20 further includes a yarn guide rod 24 disposed between the wrapping area 25 and the core wrapping yarn winding unit 30 . The middle part of the yarn guide rod 24 is provided with a first groove for positioning the soft wear-resistant yarn S3, and the soft wear-resistant yarn S3 passes through the first groove in the middle part of the yarn guide rod 24 to position the yarn forming path. Specifically, the movement of the yarn guide rod 24 left and right can adjust the offset of the path of the core filament F2, thereby adjusting the "y" shape structure; The tension of the grid ring 213 can eliminate the yarn traverse caused by the balloon, make the structure of the twisted part of the core more stable, and can also adjust the tension and twist of the core filament F2.

The staple fiber wide sliver feeding unit includes the bell mouth 11, the back roller 12 and the back top roller 13, the middle roller 14 and the middle top roller 15 for feeding the staple fiber wide sliver S1; The yarn guide wheel 16 that guides the core filament F2 and the covering filament F1.

The core-spun yarn winding unit 30 includes a yarn guide hook 31, a traveler 32, a steel ring 33 and a spun tube 34. The core-spun yarn S3 enters the balloon twisting section through the yarn guide hook 31, and the fibers of the outer layer of the core-spun yarn S3 are In this process, twisting is further carried out tightly, and finally the traveler 32 is rotated on the ring 33 and wound onto the spun bobbin 34.

The present invention also provides a method for spinning soft and wear-resistant yarns, which uses the above-mentioned spinning device for soft and wear-resistant yarns to perform core-spun spinning, specifically comprising the following steps:

S1'. Feed the short fiber wide strands S1, the fine denier flexible wrapping filament F1 and the fine denier flat core filament F2 arranged at intervals from the feeding unit 10 to the auxiliary core wrapping unit 20;

S2'. Wrapped yarn F1 is set within 1/2 width of the staple fiber wide strip S1 close to the core filament F2, and the staple fiber wide strip S1 and the core filament F2 are kept at a distance of 2-5mm to feed the front roller 17 and the front roller. In the front jaw formed by the meshing of the top roller 231, it is output to the grid ring 213 through the front jaw; The parallelism of the fibers is spread evenly on the grid circle 213; the rotation of the core filament F2 drives the short fiber wide strands S1 and the filament wrapping F1 to be wrapped and wound to the outer layer of the core filament F2 in turn at the wrapping area 25 to form a wrapping filament F1 A soft and wear-resistant yarn S3 with a helical structure of the part of the short fiber wide sliver S11 clamped close to the core fiber F2 by the core fiber F2 as the core, and a part of the short fiber wide sliver S12 far away from the core fiber F2 as the sheath;

S3'. The soft wear-resistant yarn S3 is twisted and wound by the core-spun yarn winding unit 30.

The present invention also provides a soft and wear-resistant yarn, which is spun by the above-mentioned spinning method. Compared with the yarn prepared by conventional core-spun composite spinning under the same conditions of other process parameters, the softness and abrasion resistance of the soft wear-resistant yarn S3 of the present invention are improved by more than 20% and the wear resistance is increased by more than 30%. The thinnest yarn fineness of the soft wear-resistant yarn obtained by the spinning method of the present invention is 2.1tex.

The present invention will be described in detail below through multiple embodiments.

Example 1

A method for spinning soft and wear-resistant yarns, using a spinning device for soft and wear-resistant yarns to carry out core-spun spinning, the process parameters of the core-spun spinning process are specifically: the core filament F2 is viscose with a single filament width of 80 μm Filament fiber, wrapping F1 is nylon filament fiber with a fineness of 1.0dtex, staple fiber wide sliver S1 is pure cotton fiber; front roller 17 outputs short fiber wide sliver S1 at a speed of 9.48m/min; spinning bobbin 34 The rotation speed is 11000r/min; the twist of the yarn is 80T/10cm; the total draft ratio (that is, the draft ratio of the draft unit to the staple fiber wide sliver S1) is 57.40; The linear density after stretching) is 7.84tex; the drafting in the rear area (that is, the difference in the speed of rotation of the roller and the middle roller) is 1.25; the distance between the wrapped wire F1 and the core wire F2 on the front roller 17 is 6.5mm, the spacing between the core filament F2 and the staple fiber wide strand S1 on the front roller 17 is 5mm; the wrapping filament F1 is fed at the center right of the staple fiber wide strand S1 (as shown in Figure 3). For comparison, under the condition that other parameters remain unchanged, after superimposing the covering yarn F1 and the core yarn F2, they are fed into the middle of the staple fiber wide sliver S1 and overlapped to form a traditional core-spun yarn. The test and characterization results show that: compared with the traditional core-spun yarn, the softness and wear resistance of the soft wear-resistant yarn S3 produced by the present invention are improved by 22%, and the wear resistance is increased by 30.1%.

Example 2

A spinning method of soft wear-resistant yarn, compared with Example 1, the difference is that the single filament width of the core filament F2 is 10 μm, the fineness of the wrapping filament F1 is 0.3dtex, and the staple fiber width S1 It is fine cashmere roving, and the fineness of the yarn prepared by the invention is 2.1tex, and the yarn has good abrasion resistance and smooth surface. For comparison, under the condition that other parameters remain unchanged, after superimposing the covering yarn F1 and the core yarn F2, they are fed into the middle of the staple fiber wide sliver S1 and overlapped to form a traditional core-spun yarn. The test and characterization results show that traditional core-spinning cannot capture very few external short fibers for yarn formation, and the final yarn is a twisted yarn in which the covering filament F1 and the core filament F2 are intertwisted into a tightly entangled structure, and the yarn softness is remarkable below the yarns of the present invention.

In summary, the present invention provides a soft and wear-resistant yarn and its spinning device and spinning method, using a negative pressure suction mechanism to spread the staple fiber wide strips evenly on the grid ring, and then carry out the width and Diffusion and spreading in the length direction to obtain negative pressure holding short fibers with a certain width, parallel fiber height and uniform distribution on the mesh ring; at the same time, ensure that the distance between the core filament and the wide staple fiber on the front roller is 2-5mm , so that the core-spun yarn formed by the wrapping area is in a straight line with the core yarn delivered to the mesh circle, and forms a "y"-shaped structure with the staple fiber wide whiskers delivered to the mesh circle, with a fine denier flat shape The core filament rotates to form a uniform spiral structure. At the same time, the core filament rotates so that the core filament, the covering filament and the part of the short fiber width near the core filament are twisted together, so that the helical structure and the covering filament and the part close to the core filament are twisted together. Uniform pores are formed between the staple fiber wide strands, and a helical, uniform and fluffy core structure is obtained in which the wrapping filament and the core filament clamp the part of the staple fiber wide strands close to the core filament; and then away from the core filament Under the action of the rotation of the core filament, part of the staple fiber wide strands is further wrapped and wound on the core layer to obtain a soft and wear-resistant yarn.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. A spinning device for soft and wear-resistant yarn, comprising a feeding unit, an auxiliary core-spun unit and a core-spun yarn winding unit; The feeding unit includes a bag/core yarn feeding unit, a staple fiber wide sliver feeding unit and a front roller located at the input end of the auxiliary core-spun unit; The fine-denier flat core wire and the fine-denier flexible covering wire; the covering wire is arranged in the 1/2 width of the side of the short fiber wide beard near the core thread, and the core thread and the short fiber wide beard The spacing of the strips on the front rollers is 2-5 mm; The auxiliary core wrapping unit includes a negative pressure adsorption assembly, a transmission gear, and a wrapping area for wrapping and merging; the negative pressure adsorption assembly includes a special-shaped plate, a transmission roller, and is set on the outer surface of the special-shaped plate and the transmission roller The grid ring; the special-shaped plate is provided with a negative pressure suction port, and the negative pressure suction port is provided with a negative pressure suction mechanism; the front roller, the transmission gear and the transmission roller are meshed and connected; The staple fiber wide strands and the wrapping filaments intersect and merge with the core filaments at the wrapping area to form a part of the staple fiber wide strands that are clamped by the wrapping filaments and the core filaments close to the core filaments The helical structure is a soft and wear-resistant yarn with a core, and the part of the staple fiber away from the core is a sheath, and then the soft and wear-resistant yarn is transmitted to the core-spun yarn winding unit for twisting and winding. 2. The spinning device of soft and wear-resistant yarn according to claim 1, wherein the thin-denier flat core filament is one of water-soluble fiber or non-water-soluble fiber, and the width of single filament is 10. -80 μm; the monofilament fineness of the wrapped yarn is 0.3-1.0 dtex. 3. The spinning device for soft wear-resistant yarn according to claim 1, characterized in that the softness of the soft wear-resistant yarn is increased by more than 20% and the wear resistance is improved by more than 30% compared with the core-spun yarn of the same specification, The minimum line density is 2.1tex. 4. The spinning device for soft and wear-resistant yarn according to claim 1, characterized in that, the width of the negative pressure air inlet is greater than or equal to the width of the wide staple fiber. 5. The spinning device of soft wear-resistant yarn according to claim 1, characterized in that, the soft wear-resistant yarn formed through the wrapping area and the core filament fed on the grid circle on a straight line, and merge with the short fiber wide strands and wrapped silk fed into the grid circle to form a "y" shape; The short fiber wide strands fed in front of the wrapping area are in a straight line. 6. The spinning device for soft and wear-resistant yarn according to claim 1, further comprising an auxiliary conveying unit arranged above the negative pressure adsorption assembly; the auxiliary conveying unit includes a front top roller, a transmission belt Roller and the bridge part arranged between the front top roller and the transmission top roller; the shaft core of the front top roller, the bridge part and the shaft core of the transmission top roller are connected; the front top roller The top rollers are set up and down corresponding to the front rollers, and the transmission top rollers are set up and down corresponding to the transmission rollers; the transmission top rollers are in contact with the grid ring. 7. The spinning device for soft wear-resistant yarn according to claim 1, characterized in that, the distance between the wrapping area and the nip of the front roller is greater than the fiber length of the wide staple fiber. 8. The spinning device of soft wear-resistant yarn according to claim 1, characterized in that, the short fiber wide sliver feeding unit comprises a bell mouth and a back roller for feeding the short spun wide sliver and rear top rollers, middle rollers and middle top rollers; The bag/core yarn feeding unit includes a guide wheel for guiding the core yarn and the wrap yarn; The auxiliary core-spun unit also includes a yarn guide rod arranged between the wrapping area and the core-spun yarn winding unit; the middle part of the yarn guide rod is provided with a first recess for positioning the core-spun yarn groove; The core-spun yarn winding unit includes a yarn guide hook, a traveler, a steel ring and a spun tube, the core-spun yarn enters the balloon twisting section through the yarn guide hook, and the fibers of the outer layer of the core-spun yarn are In this process, twisting is further carried out, and finally the traveler is wound on the spun bobbin through the rotation of the traveler on the steel ring. 9. A spinning method of soft wear-resistant yarn, characterized in that, the spinning device of the soft wear-resistant yarn according to any one of claims 1 to 8 is used for core-spun spinning, specifically comprising the following steps: S1'. Feed the staple fiber wide strands, fine denier flexible wrapping filaments and fine denier flat core filaments arranged at intervals from the feeding unit to the auxiliary core wrapping unit; S2'. The wrapping yarn is set within 1/2 width of the side of the short fiber wide beard near the core wire, and the short fiber wide beard and the core wire are fed at a distance of 2-5mm In the front nip formed by the engagement of the front roller and the front top roller, the front nip is output to the grid ring; The mechanism absorbs and grips, and evenly lays on the grid circle with a certain width and fiber parallelism; the core filament rotates to drive the short fiber wide strands and wrapping filaments to wrap and wrap in turn at the wrapping area. The outer layer of the core filament is formed into a soft soft fabric with a helical structure in which the wrapping filament and the core filament clamp a part of the short fiber wide strands close to the core filament as the core, and a part of the short fiber wide strands far away from the core filament as the sheath. wear-resistant yarn; S3'. The soft wear-resistant yarn is then twisted and wound by the core-spun yarn winding unit. 10. A soft wear-resistant yarn, characterized in that it is obtained by spinning the soft wear-resistant yarn according to claim 9.