CN112725965A

CN112725965A - Vortex spinning production process for wool-containing yarn

Info

Publication number: CN112725965A
Application number: CN202011546445.1A
Authority: CN
Inventors: 董坚强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-04-30

Abstract

The invention discloses a production process of wool-containing yarn vortex spinning, which comprises an opening and picking process, a carding process, a drawing process and a vortex spinning process; in the opening and picking procedure, the first blowing is carried out on the stretch yarn fiber and the fiber to be blended according to the blending ratio; packaging the mixed fiber grabbed by the first blowing, and performing second blowing; drawing and mixing the wool tops and the mixed cotton slivers on drawing equipment; three-pass drawing is adopted, and the roller gauge is smaller than the average length of the wool fibers. The invention relates to a production process of vortex spinning of wool-containing yarns, which adopts a special drawing production process to ensure that the wool yarns can be suitable for cotton type vortex spinning equipment to spin. And the yarn blended with the elastic wool yarn can be used for preparing the wool elastic wool yarn blended vortex spinning with uniform evenness and uniform fiber mixing.

Description

Vortex spinning production process for wool-containing yarn

Technical Field

The invention relates to the technical field of vortex spinning, in particular to a production process of wool-containing yarn vortex spinning

Background

The air-jet vortex spinning technology is a semi-free end spinning method for forming yarn by using three-dimensional high-speed rotating vortex to replace a mechanical rotating member to twist free tail end fibers, has the advantages of short flow, high speed, automation, ecological environmental protection and the like, and is considered to be the most promising spinning technology in the 21 st century. The spinning process is as follows: compressed air is jetted into the airflow twisting cavity through four jet holes along the tangential direction of the inner wall of the nozzle to form a three-dimensional high-speed rotating strong negative pressure vortex field, the head end of a quantitative fiber strand after the drafting process is directly led by a leading needle and is absorbed by the negative pressure vortex field to enter the inside of a hollow spindle yarn-guiding tube to form core fibers, the tail end of the fiber strand is held by a front roller and is formed into a free tail end under the centrifugal action of the vortex field, the free tail end is overturned and laid on a hollow spindle holding surface and is attached to the hollow spindle holding surface to do sliding motion under the action of high-speed rotating airflow, and the core fibers are wrapped to form yarns. The friction coefficient of the supporting surface of the hollow spindle is properly improved, the free tail end of the fiber can be attached to the supporting surface of the hollow spindle to roll under the action of high-speed rotating airflow, and the fiber is twisted and fixed in the yarn along with the wrapping of the wrapped fiber.

Wool is an important raw material in the textile industry, and has the advantages of good elasticity, strong hygroscopicity, good heat retention and the like, so that the wool fabric is deeply favored by consumers. Due to the special scale layer structure of the wool fibers, the wool fibers have larger crimpness and larger shrinkage rate after meeting water, and the cohesion force between the fibers in the wool yarn structure is poor, so that the form stability is poor during washing.

When the yarn containing wool is used for vortex spinning production, if vortex spinning production equipment suitable for cotton fibers is used, the problem of uniformity of yarn evenness and the like can occur when a cotton sliver mixed with wool fibers is used for vortex spinning.

Disclosure of Invention

The invention aims to provide a production process of vortex spinning of wool-containing yarns, which can enable vortex spinning equipment for producing cotton fibers to spin the wool-containing vortex yarns on streets.

In order to solve the technical problem, the invention aims to realize that:

the invention relates to a production process of vortex spinning of wool-containing yarns, which comprises the following steps: opening picking, carding, drawing and vortex spinning;

in the opening and picking procedure, the first blowing is carried out on the stretch yarn fiber and the fiber to be blended according to the blending ratio; packaging the mixed fiber grabbed by the first blowing, and performing second blowing;

in the carding procedure, the main procedure parameters of the carding machine are as follows: the cylinder speed is 370r/min, the licker-in speed is 960r/min, the sliver output speed is 165m/min, the cover plate speed is 120mm/min, the cover plate and cylinder are at a distance of 30.5mm/1000, 27.9mm/1000, 25.4mm/1000, and the cylinder and doffer are at a distance of 28mm/1000, thus preparing the mixed sliver.

The drawing process comprises the following steps: drawing and mixing the wool tops and the mixed cotton slivers on drawing equipment; in the drawing process, three drawing steps are adopted, and the main technological parameters are as follows: the dry basis weight is 4.3g/m, 8 parallel-neutralization drafting times in the back region are 1.3, the rotating speed of a front roller is 360m/min, the wool fibers are self-regulated and uniform, and the roller gauge is smaller than the average length of the wool fibers.

On the basis of the above scheme and as a preferable scheme of the scheme: in the vortex spinning process, the main process parameters are as follows: the coiling ratio is 1.02, the roller tension is 120CN, the traversing angle is 17deg, the center distance of the lower roller is 44mm-43mm-47mm, the center distance of the upper roller is 49mm-45mm-47mm, and the specification of the cotton collector is 4 mm.

On the basis of the above scheme and as a preferable scheme of the scheme: the density of the needle teeth on the metal card clothing used by the carding machine is 450-²The working angle alpha on the metallic card clothing is 50-70 deg..

On the basis of the above scheme and as a preferable scheme of the scheme: in the vortex spinning process, the vortex air pressure is 0.52MPa, and the spinning speed is 500 m/min.

On the basis of the above scheme and as a preferable scheme of the scheme: the bale plucker used in the first and second blowing is a disc type bale plucker.

The invention has the beneficial effects that: the invention relates to a production process of vortex spinning of wool-containing yarns, which adopts a special drawing production process to ensure that the wool yarns can be suitable for cotton type vortex spinning equipment to spin. And the yarn blended with the elastic wool yarn can be used for preparing the wool elastic wool yarn blended vortex spinning with uniform evenness and uniform fiber mixing.

Drawings

FIG. 1 is a flow diagram of a production process according to the present invention;

FIG. 2 is a front view of a card wire according to the present invention;

FIG. 3 is a schematic cross-sectional view of a card wire according to the present invention;

fig. 4 is a schematic structural view of a humidity control system according to a second embodiment. .

The designations in the figures illustrate the following: 1-an air compressor; 2-the trachea; 3-water supply source; 4-a water pipe; 5-a humidity controller; 6-dry fog humidifier; 7-air oil filtration device; 8-air water filtering device; 9-a water filtration device; 10-a base; 11-needle teeth; 111-first pin teeth; 112-second pin teeth; 113-third pin teeth; an alpha-working angle; h-total tooth height; h-depth of tooth tip; w-base thickness, a-tip width, b-tip thickness.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Example one

The present embodiment will be described in detail with reference to fig. 1 to 3. The vortex spinning production process of wool-containing yarns comprises the following steps: the method comprises the steps of an opening picking process, a carding process, a drawing process and an eddy spinning process.

In the opening and picking procedure, the first blowing is carried out on the stretch yarn fiber and the fiber to be blended according to the blending ratio; and packaging the mixed fiber grabbed by the first blowing, and performing second blowing. The two-time blowing process is adopted because the elastic yarn has curly texture and is difficult to comb. During carding, the mixing uniformity with other fibers to be mixed is poor. The process of twice blowing is adopted, so that the comfortable elastic yarns and other equal-mixed fibers are fully mixed before carding, and the problem of poor fiber mixing uniformity caused by high carding difficulty is solved.

Specifically, in the opening and picking process, the Telitsler blowing-carding unit is used, and the process principle of 'more loosening, more carding, less beating, less damage and less dropping' is adopted. The bale plucker used in the first and second blowing is a disc type bale plucker. The main technological parameters are as follows: the beater speed of the bale plucker is 1200r/min, the walking speed is 15m/min, and the bale plucking depth is 2.5 mm. Specifically, in this embodiment, the stretch yarn and the polyester fiber are mixed, according to a ratio of 30: 70, or other fibers such as cotton, viscose, nylon, lyocell, modal, or other natural or synthetic fibers.

A carding machine TC10 apparatus was used in the carding process. Other carding apparatus may also be selected. In the carding process, the main process parameters of the carding machine are as follows: cylinder speed 370r/min, licker-in speed 960r/min, sliver output speed 165m/min, cover plate speed 120mm/min, cover plate-to-cylinder spacing 30.5mm/1000, 27.9mm/1000, 25.4mm/1000, cylinder-to-doffer spacing 28mm/1000, and sliver ration 5 g/m.

The density of the needle teeth on the metal card clothing used by the carding machine is 450-²The working angle alpha on the metallic card clothing is 50-70 deg.. Specifically, in this embodiment, the pin density is 500Points/inch2, and the working angle is 60 °.

Further, as shown in fig. 2 and 3, the working angle α of the teeth is increased and the density of the teeth is decreased, so that the elastic yarn can be peeled from the teeth 11 easily. The total height h of the base 10 and the needle teeth 11 is 4.5mm, and the tooth depth h of the needle teeth 2 is 2.50 mm. At the moment, the tooth tip hardness is more than or equal to 780HV, the tooth tip width a is 0.15mm, and the needle tooth thickness b is 0.17 mm.

And further, the needle teeth 11 include a first needle tooth 111, a second needle tooth 112 and a third needle tooth 113 which are arranged in this order in the present embodiment. The working surface and the back surface of the first pin tooth 111 are both linear; the working surface of the second pin teeth 112 is a concave arc structure, and the back surface is a convex arc structure; the third pin teeth 112 and the working and back faces each present a convex arcuate configuration.

On the premise of enlarging the working angle of the pin teeth 11, if the traditional pin tooth shape is adopted, the carding effect of the elastic yarn is not good. In order to completely and uniformly comb the comfortable elastic yarns, the effect of gathering the comfortable elastic yarns is avoided. The three types of card clothing with the shapes of the card teeth are adopted to comb the elastic yarn.

Drawing: drawing and mixing the wool tops and the mixed cotton slivers on drawing equipment; in the drawing process, three drawing steps are adopted, and the main technological parameters are as follows: the dry basis weight is 4.3g/m, 8 pieces of yarn are adopted, the draft multiple of a rear zone is 1.3, the rotating speed of a front roller is 360m/min, the yarn is self-leveling, and the roller gauge is smaller than the average length of wool fibers and is larger than 38mm, in particular 42 mm.

In the vortex spinning process, the main process parameters are as follows: the coiling ratio is 1.02, the roller tension is 120CN, the traversing angle is 17deg, the center distance of the lower roller is 44mm-43mm-47mm, the center distance of the upper roller is 49mm-45mm-47mm, and the specification of the cotton collector is 4 mm. In the vortex spinning process, the vortex air pressure is 0.52MPa, and the spinning speed is 500 m/min.

Example two

Referring to fig. 4, the present embodiment is described in detail, the difference between the vortex spinning process of the wool-containing yarn according to the present embodiment and the first embodiment is that the fiber mixed with the stretch yarn is acrylic fiber.

The relative humidity of the opening and picking process is 90-95%, the relative humidity of the carding process is 90-85%, the relative humidity of the drawing process is 72-75%, and the relative humidity of the vortex spinning process is 65-70%. Specifically, the relative humidity of the opening and picking process is 90%, the relative humidity of the carding process is 80%, the relative humidity of the drawing process is 75%, and the relative humidity of the vortex spinning process is 70%.

A humidity adjusting system is adopted to adjust the humidity of the scutching process, the cotton carding process, the drawing process and the vortex spinning process;

the humidity adjusting system comprises an air compressor 1, an air pipe 2, a water supply source 3, a water pipe 4, a humidity controller 5, a dry fog humidifier 6 and a humidity sensor;

and a set of humidity adjusting system is respectively arranged in the opening and picking workshop, the carding workshop, the drawing workshop and the vortex spinning workshop. And a humidity sensor is arranged in each workshop and used for detecting the humidity of each workshop. In the humidity adjusting system, one end of an air pipe 2 is communicated with an air compressor 1, and the other end of the air pipe is connected with a plurality of dry fog humidifiers 6; one end of the water pipe 4 is connected with the water supply source 3, and the other end is connected with the dry fog humidifiers 6; the humidity sensor 6 is used for detecting the humidity of the opening and picking process, the cotton carding process, the drawing process and the vortex spinning process and is in signal connection with the humidity controller 5; the humidity controller 6 controls the flow rate in the air pipe 2 and the water pipe 4; an air oil filtering device 7 and an air water filtering device 8 are arranged on the air pipe 2 between the humidity controller 5 and the air compressor 1; a water filtering device 9 is provided on the water pipe 4 between the humidity controller 5 and the water supply source 3. The humidity controller of each workshop transmits a relative humidity signal in the workshop to the humidity controller 5, and the humidity controller 5 controls the flow in the air pipe 2 and the water pipe 4, so that the amount of the spray of the dry fog humidifier 6 can be used for adjusting the humidity in the workshop.

The dry fog humidifier is arranged above the opening and scutching equipment, the carding equipment, the drawing equipment and the vortex spinning equipment; the average spray particle diameter of the dry fog humidifier is 5-7.5 um.

Comparative example

The difference between the vortex spinning production process of wool-containing yarn related to the comparative example and the first example is as follows: the spacing in the drawing frame is set according to the conventional spacing and is larger than the length of the wool fiber.

The yarn prepared in the first embodiment, the second embodiment and the conventional production process is tested for the yarn levelness CV value, and the specific results are as follows:

examples	Example one	Example two	Comparative example 1
				Evenness CV/%)	12.67	13.26	23.43

From the above, it can be seen that the spinning method of the present invention can improve yarn evenness and improve yarn quality.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The vortex spinning production process of wool-containing yarns is characterized by comprising the following steps of: opening picking, carding, drawing and vortex spinning;

2. The vortex spinning production process of wool-containing yarns according to claim 1, wherein the main process parameters in the vortex spinning process are as follows: the coiling ratio is 1.02, the roller tension is 120CN, the traversing angle is 17deg, the center distance of the lower roller is 44mm-43mm-47mm, the center distance of the upper roller is 49mm-45mm-47mm, and the specification of the cotton collector is 4 mm.

3. The vortex spinning process of wool-containing yarns as claimed in claim 1, wherein the card clothing used by said carding machine has a density of teeth of 450 and 500Points/inch2, and the working angle α of the metal card clothing is 50-70 °.

4. The vortex spinning process of wool-containing yarns according to claim 2, wherein in the vortex spinning process, the vortex air pressure is 0.52MPa, and the spinning speed is 500 m/min.

5. A wool-containing yarn vortex spinning production process according to claim 1, wherein the bale plucker used in the first blowing and the second blowing is a disc type bale plucker.