A method for producing a moisture-permeable and warm-keeping composite fabric

Abstract

The application discloses a production method of a moisture-permeable and warm-keeping composite fabric, and comprises the following steps: raw cotton selection and matching; cotton mixing and picking; cotton opening and cleaning; cotton carding; cotton combing; multi-fiber mixing and picking; mixed fiber opening and cleaning; mixed fiber carding; mixed fiber drawing; mixed fiber roving; spinning; and composite fabric processing. Compared with the prior art, the application realizes the development of the composite yarn with self-adapting moisture-permeable and warm-keeping performance by the multi-element composite of the paper yarn, the water-soluble vinylon filament and the short fibers with excellent wearing performance, and then realizes the development of the corresponding composite fabric.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new yarns, in particular to a production method of a moisture-permeable and warm-keeping composite fabric. BACKGROUND

[0002] With the development of social economy, people's living standards are continuously improved, and for clothing textiles, in addition to pursuing wearing comfort, more and more attention is paid to fashion and functionality, and unique style and various functions such as antibacterial and antistatic functions are pursued. In order to meet the needs of consumers, it is an important task for the textile industry to continuously develop new yarns and fabrics. With the development of science and technology, the competition in the textile market is becoming more and more fierce, and various manufacturers are constantly developing towards high-end, high-grade, good technical content, and high value-added in order to maximize profits.

[0003] Paper yarn is a new type of yarn mainly composed of wood fibers produced by a method similar to papermaking. There is a small amount of production in Japan, the Netherlands and other countries. Its advantages are light weight, the same hand feeling as linen fabric, moisture regulating function of absorbing and removing water, removing odors, and resistance to mold, fleas, and harmful gases, and no static electricity. The disadvantage of paper yarn is that it is easy to break, so it is easy to break during production and after being made into thread, making the production of paper yarn difficult and the service life short. At the same time, paper yarn is easy to be affected by temperature when plying, resulting in low plying efficiency and further reducing service life. Therefore, how to composite paper yarn with other short fibers or filament yarns in structure to fully exert the advantages of paper yarn and overcome the defects of paper yarn has become one of the key directions for the development of this kind of yarn. SUMMARY

[0004] The purpose of the present application is to provide a production method of a moisture-permeable and warm-keeping composite fabric to solve the problems in the prior art.

[0005] The present application provides a production method of a moisture-permeable and warm-keeping composite fabric, comprising the following steps:

[0006] The selected cotton fibers are classified with the origin as the main component, mixed and grabbed by a mixed cotton grabbing machine, and then sequentially subjected to opening and cleaning, carding, and combing to obtain combed cotton fiber clusters. The combed cotton fiber clusters and the selected two or more kinds of synthetic fibers with excellent wearing performance are mixed and grabbed by a mixed cotton grabbing machine. The disc of the mixed cotton grabbing machine is divided into corresponding arc-shaped parts, and the number of the arc-shaped parts divided by the disc is the same as the number of the origins of the selected cotton fibers, or one more than the number of the types of the selected synthetic fibers.

[0007] The cotton grabbing device is arranged in each arc-shaped part, each cotton grabbing device is connected with the corresponding cotton conveying branch pipeline, a fiber storage tank is arranged at one end of each cotton conveying branch pipeline, one side of the fiber storage tank is connected with the cotton conveying branch pipeline through an input door, the other side of the fiber storage tank is connected with the cotton conveying main pipeline through an output door, the input door and the output door are both controllable lifting doors, when the input door is opened, the fibers grabbed by the cotton grabbing beater enter the fiber storage tank, when the weight of the fibers in the fiber storage tank reaches a set value, the input door is closed, and the output door is opened at the same time, so that the fibers of the set weight in the fiber storage tank are conveyed into the cotton conveying main pipeline, the accurate mixing ratio control of various selected fibers is realized, the grabbed mixed fibers are sequentially subjected to opening and cleaning and cotton ginning to obtain a mixed fiber sliver, the mixed fiber sliver is subjected to three uniform drawing processes to obtain a mixed slub yarn, and the mixed slub yarn is subjected to roving to obtain a short fiber blended roving yarn, in the first spinning process, the paper strip obtained by cutting is fed together with the vinylon filament to obtain a composite core yarn with the vinylon in the center and the paper yarn wrapped outside, in the second spinning process, the obtained composite core yarn is fed together with the short fiber blended roving yarn to obtain a composite yarn with the composite core yarn in the center and the short fiber blended yarn wrapped outside, and the composite yarn is woven to obtain a fabric, the vinylon fibers in the center are dissolved after the fabric is subjected to hot water bath, at the same time of the dissolution of the vinylon, the wrapped paper yarn in the composite core yarn swells and extrudes towards the center after being wetted and heated, so that the fabric continues to maintain the original state until the paper yarn is dried after cooling, and the required composite fabric is obtained; when the external temperature decreases, the paper yarn shrinks, the external air enters the center of the composite yarn under the action of the air pressure difference to form an air layer in the composite yarn, and the warmth-keeping effect of the composite fabric is realized; when the external temperature and the humidity of the wearing environment increase, the paper yarn swells rapidly after being wetted and heated, the rapid moisture absorption effect of the composite fabric is realized, the swelled paper yarn extrudes towards the center of the composite yarn to extrude and remove the air in the center, so that the fabric is fluffy and full, and the cool feeling of wearing is realized.

[0008] The production method of the moisture-permeable and warm-keeping composite fabric as described above, preferably, the mixed cotton grabbing machine comprises a disc, the disc comprises an outer disc and an inner disc, the outer disc and the inner disc are both hollow cylindrical structures with the upper side open, the disc between the outer disc and the inner disc constitutes the disc for containing fibers, a certain number of baffles are arranged in the disc, the baffles are arranged at equal arc intervals along the circumferential direction of the disc, and each baffle divides the disc into a certain number of arc-shaped parts, and a cotton grabbing system is arranged at the upper part of each arc-shaped part divided by the disc.

[0009] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, the grabbing system comprises an arc-shaped shell, the shell is hollow and open at the lower side, the cross section of the shell is a convex semicircle, the inner arc-shaped side of the lower side of the shell is rotatably connected with the upper side of the inner disc of the arc-shaped part divided by the disc, the outer arc-shaped side of the lower side of the shell is identical with the upper side of the outer disc of the arc-shaped part divided by the disc, the inner arc-shaped side of the lower side of the shell is identical with the upper side of the inner disc of the arc-shaped part divided by the disc, and when the shell is pressed down, the inner arc-shaped side of the lower side of the shell is kept in full alignment with the upper side of the inner disc of the arc-shaped part divided by the disc and the outer arc-shaped side of the lower side of the shell is kept in full alignment with the upper side of the outer disc of the arc-shaped part divided by the disc, a grabbing fiber outlet is opened at the center of the shell, the grabbing fiber outlet is connected with the cotton conveying branch pipelines, the other ends of the cotton conveying branch pipelines are connected with the cotton conveying main pipeline, a fiber storage tank is arranged at the connection of the cotton conveying branch pipeline and the cotton conveying main pipeline, the fiber storage tank is a rectangular hollow closed structure, one side of the fiber storage tank is additionally provided with a grabbing fiber input door, the fiber storage tank is connected with the cotton conveying branch pipeline through the grabbing fiber input door, the other side of the fiber storage tank is additionally provided with the grabbing fiber output door, the fiber storage tank is connected with the output branch pipeline through the grabbing fiber output door, the output branch pipeline is connected with the cotton conveying main pipeline, the cotton conveying main pipeline is connected with the machine table of the previous process, the grabbing fiber input door is driven to lift by a conveying door motor to realize the control of opening and closing of the grabbing fiber input door, the grabbing fiber output door is driven to lift by a conveying door motor to realize the control of opening and closing of the grabbing fiber output door, a pressure sensing device is arranged at the bottom of the fiber storage tank, and the grabbing cotton device is arranged in the shell.

[0010] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, the cotton grabbing device comprises a cotton grabbing shell, which is hollow and open at the upper side, the cross section of the cotton grabbing shell is a lower convex semicircle, the geometric structure of the cotton grabbing shell is the same as that of the arc-shaped part of the disc, and the outer side of the cotton grabbing shell is in close contact with the inner side of the arc-shaped part of the disc, the fiber inlet slits are opened at the arc-shaped direction of the lower side of the cotton grabbing shell at equal arc intervals, a certain number of fiber grabbing beaters are arranged in the cotton grabbing shell, the fiber grabbing beaters comprise a beater roller, which is a solid cylindrical body, the two ends of the beater roller are rotatably connected with the outward side and the inward side of the cotton grabbing shell respectively, the beater roller is driven to rotate by the corresponding transmission mechanism, the fiber grabbing knife rings are arranged at equal length intervals along the length direction of the beater roller, the fiber grabbing knife rings comprise a certain number of fiber grabbing blades, the fiber grabbing blades are arranged along the circumferential direction of the beater roller to form the fiber grabbing knife ring, the fiber grabbing blades of the fiber grabbing knife ring completely cover the circumferential direction of the beater roller, the number of the fiber grabbing blades on each fiber grabbing knife ring gradually decreases from the outside to the inside along the length direction of the beater roller, and one side of the open upper side of the cotton grabbing shell is connected with the outer shell through the elastic expansion pin.

[0011] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, the cotton combing adopts a modified cotton combing machine comprising a cotton feeding and clamp plate part, a carding part, and a separation and combination part, the cotton lap is fed into the cotton feeding and clamp plate part, the cotton fiber front end hook is straightened and carded and the short fibers are separated and removed in the carding part, the cotton fiber rear end hook is straightened and carded and the short fibers are separated and removed in the separation and combination part, and the combing cotton fibers are continuously output through the combination part, so as to obtain the combing cotton fiber cluster in a continuous state.

[0012] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, the synthetic fiber is lyocell fiber, or modal fiber, or cotton type wool fiber, or cotton type silk fiber, or cotton type polyester fiber, or cotton type acrylic fiber.

[0013] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, the first spinning is performed by using a ring spinning machine, the transmission between the middle roller, the back roller and the front roller of the ring spinning machine is disconnected, the cut paper strip is fed together with the vinylon filament through the front roller, and the feeding point of the vinylon filament on the front roller is located at the center of the feeding point of the paper strip on the front roller, both are continuously outputted after being driven by the rotating front roller, and are immediately subjected to the twisting degree, under the action of which the paper strip with a certain width is twisted into paper yarn, and the vinylon filament is wrapped in the center during the twisting process, thereby producing the composite core yarn with the vinylon in the center and the paper yarn wrapped outside.

[0014] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, the second spinning is performed by using a ring spinning machine, the produced composite core yarn and the short fiber blended roving produced by the roving are fed together, the short fiber blended roving is fed through the back roller of the drafting system, and is then outputted through the middle roller and the front roller in sequence, thereby being subjected to the finishing drafting action of the drafting multiple in the back drafting zone between the back roller and the middle roller within 1.1, and then being subjected to the drawing drafting action of the drafting multiple in the front drafting zone between the middle roller and the front roller above 20, thereby obtaining the short fiber mixed sliver without twist and with a certain width, the short fiber sliver is continuously outputted through the front roller, and the composite core yarn is directly fed through the front roller, and the feeding point of the composite core yarn on the front roller is located at the center of the output point of the short fiber mixed sliver on the front roller, both are continuously outputted after being driven by the rotating front roller, and are immediately subjected to the twisting degree, under the action of which the short fiber mixed sliver with a certain width is twisted into the short fiber blended yarn wrapped outside, and the composite core yarn is wrapped in the center during the twisting process, thereby producing the composite yarn with the composite core yarn in the center and the short fiber blended yarn wrapped outside.

[0015] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, in the cotton opening and cleaning, the grabbed cotton fibers are sequentially subjected to the opening by the mixing cotton opener, and the main mixing and the auxiliary impurity removal of the cotton fibers are realized during the opening process, the further opening and carding by the carding hammer opener, and the main impurity removal and the auxiliary mixing of the cotton fibers are realized during the opening process, the vibration opening by the vibration cotton feeder, and the uniform conveying and impurity removal of the cotton fibers are realized during the vibration opening process, and the uniform cotton lap is produced by the single hammer lap former.

[0016] The production method of the moisture-permeable and warm-keeping composite fabric as described above, wherein preferably, in the opening and cleaning of the mixed fibers, the grabbed fibers are sequentially subjected to further uniform mixing by a differential multi-warehouse cotton mixing machine, further opening and carding by a porcupine type cotton opener, and impurity removal and mixing of the fibers during the opening process, and are formed into uniform mixed rolls by a single beater lap former; during the multi-warehouse cotton mixing process, the capacity of the multi-warehouse cotton mixing machine is increased, and the delay time is increased according to the principle of sufficient mixing, so that a better mixing effect is achieved; during the porcupine type cotton opening process, the mechanical part between the beater and the dust bar is relied on to complete the opening and impurity removal; and during the lap forming process, the mechanical part between the beater and the dust bar is relied on to complete the opening and impurity removal.

[0017] Compared with the prior art, the paper yarn is compounded with water-soluble vinylon filaments and short fibers with excellent wearing performance, so that the development of the composite yarn with self-adaptive moisture-permeable and warm-keeping performance is realized, and then the development of the corresponding composite fabric is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the mixed cotton grabbing machine of the present application.

[0019] Figure 2 It is a schematic diagram of the cotton grabbing device of the present application.

[0020] Explanation of reference numerals: 1 - disc, 2 - outer disc, 3 - inner disc, 4 - baffle, 5 - outer shell, 6 - fiber grabbing output port, 7 - cotton conveying branch pipe, 8 - fiber storage tank, 9 - output branch pipe, 10 - fiber grabbing input door, 11 - fiber grabbing output door, 12 - main cotton conveying pipe, 13 - cotton grabbing shell, 14 - fiber input slot, 15 - beater roller, 16 - fiber grabbing knife ring, 17 - fiber grabbing knife blade, 18 - elastic expansion pin. DETAILED DESCRIPTION

[0021] The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be explained as a limitation of the present application.

[0022] The application provides a production method of a moisture-permeable and warm-keeping composite fabric, which comprises the following steps: classifying cotton fibers selected according to the origin of the cotton fibers as the main component, mixing and picking the cotton fibers by using a mixed picker, then sequentially performing opening and cleaning, carding and combing to obtain combed cotton fiber tufts, mixing and picking the combed cotton fiber tufts and two or more than two kinds of synthetic fibers selected according to excellent wearing properties by using a mixed picker, wherein the disc 1 of the mixed picker is divided into corresponding arc-shaped parts, the number of the arc-shaped parts divided by the disc 1 is the same as the number of the origins of the selected cotton fibers, or is one more than the number of the types of the selected synthetic fibers, a cotton picking device is arranged in each arc-shaped part, each cotton picking device is connected with a corresponding cotton conveying branch pipe 7, a fiber storage tank 8 is arranged at one end of each cotton conveying branch pipe 7, one side of the fiber storage tank 8 is connected with the cotton conveying branch pipe 7 through an input door, the other side of the fiber storage tank 8 is connected with a cotton conveying main pipe 12 through an output door, the input door and the output door are both controllable lifting doors, when the input door is opened, the fibers picked by the cotton picking beater enter the fiber storage tank 8, when the weight of the fibers in the fiber storage tank 8 reaches a set value, the input door is closed, and the output door is opened at the same time, so that the fibers with the set weight in the fiber storage tank 8 are conveyed into the cotton conveying main pipe 12, thereby realizing accurate mixing ratio control of the selected various fibers, the picked mixed fibers are sequentially subjected to opening and cleaning and carding to obtain a mixed fiber sliver, the mixed fiber sliver is then subjected to three uniform drawing processes to obtain a mixed slubbing, and the mixed slubbing is subjected to roving to obtain a short fiber blended roving, in the first spinning process, a paper sliver strip obtained by cutting is fed together with a vinylon filament to obtain a composite core yarn with the vinylon in the center and the paper yarn wrapped outside, in the second spinning process, the obtained core yarn is fed together with the short fiber blended roving to obtain a composite yarn with the composite core yarn in the center and the short fiber blended yarn wrapped outside, and the composite yarn is woven to obtain a fabric, the fabric is subjected to hot water bath to make the vinylon fibers in the center dissolved, at the same time of the dissolution of the vinylon, the wrapped paper yarn in the composite core yarn is expanded after absorbing moisture and being heated, so as to press towards the center, and the fabric continues to keep the original state until the paper yarn is cooled and dried to obtain the required composite fabric; when the external temperature decreases, the paper yarn shrinks, the external air enters the center of the composite yarn in the air pressure difference, an air layer is formed in the composite yarn, and the warm-keeping effect of the composite fabric is realized; when the external temperature and the humidity of the wearing environment increase, the paper yarn rapidly absorbs moisture and is expanded after being heated, the rapid moisture absorption effect of the composite fabric is realized, the expanded paper yarn presses towards the center of the composite yarn to press and remove the air in the center, so that the fabric is fluffy and full, and the cool feeling of wearing is realized.

[0023] First step: raw cotton selection, according to the performance requirements of the fabric, select the length of 28-29.8mm, grade control in 2-3, marklon value in 3.4-5.0 of raw cotton, require good color, better neatness, maturity, less defects, low short fiber rate; The principle of cotton selection is quality first, overall arrangement, overall consideration, ensure the key, look ahead and consider the consequences, long flow, eat thoroughly two heads, reasonable allocation; On the basis of classification, the same kind of raw materials are arranged into several teams, and the raw cotton with similar production place and technical index is arranged in a team, so that when a batch of raw materials is used up, another batch of raw materials in the same team can be used to replace it, so that the characteristics of the raw cotton being used do not change significantly, and the purpose of stable production and ensuring yarn quality is achieved. For this purpose, the following two points are followed in raw material queuing: First, the main component: in order to ensure the stability of the production process and the quality of the yarn, arrange several batches of raw materials with relatively close technical indicators as the main component in the cotton selection, take the production place as the main component, and the main component accounts for more than 70% of the total cotton selection; Second, the number of teams and the mixing percentage: the number of teams and the mixing ratio are directly related. The more the number of teams, the smaller the mixing ratio. The fewer the number of teams, the larger the mixing ratio. When the number of teams is too large, the production management is difficult, and it is easy to cause uneven mixing of cotton. When the number of teams is too small, the mixing ratio is large, and when the batch is connected, it is easy to cause large differences in the performance of raw cotton. Considering comprehensively, 6-9 teams are selected.

[0024] Select high-strength, fine-denier, few defects, few double-length fibers, average grade 2.6, average length 28.6mm, and impurity content 1.72% of polyester fiber.

[0025] The second step is to mix and pick the cotton. The selected cotton fibers are mixed and picked according to the required mixing ratio. The mixing and picking is done by a mixing and picking machine. The mixing and picking machine includes a disc 1, which includes an outer disc 2 and an inner disc 33. Both the outer disc 2 and the inner disc 33 are hollow cylindrical structures with open upper sides. The outer disc 2 and the inner disc 33 form the disc 1, which holds the fibers. A certain number of baffles 4 are arranged along the circumference of the disc 1 at equal arc intervals. The baffles 4 divide the disc 1 into a certain number of arc-shaped sections. The number of arc-shaped sections into which the disc 1 is divided is equal to the number of classified cotton fibers based on the main component. A picking system is arranged at the upper part of each arc-shaped section of the disc 1. The picking system includes an arc-shaped housing 5, which is hollow and open at the lower side. The cross-section of the housing 5 is a semicircle with a convex upper side. The inner arc-shaped edge of the lower side of the housing 5 is rotatably connected to the upper side of the inner disc 33 of the arc-shaped section of the disc 1. The outer arc-shaped edge of the lower side of the housing 5 is identical to the upper side of the outer disc of the arc-shaped section of the disc 1. The inner arc-shaped edge of the lower side of the housing 5 is identical to the upper side of the inner disc 33 of the arc-shaped section of the disc 1. When the housing 5 is pressed down, the inner arc-shaped edge of the lower side of the housing 5 and the upper side of the inner disc 33 of the arc-shaped section of the disc 1 remain completely aligned, and the outer arc-shaped edge of the lower side of the housing 5 and the upper side of the outer disc of the arc-shaped section of the disc 1 remain completely aligned. A fiber picking outlet 6 is arranged at the center of the housing 5. The fiber picking outlet 6 is connected to a cotton conveying branch pipe 7. The other end of each cotton conveying branch pipe 7 is connected to a cotton conveying main pipe 12. A fiber storage tank 8 is arranged at the connection between each cotton conveying branch pipe 7 and the cotton conveying main pipe 12. The fiber storage tank 8 is a long rectangular hollow closed structure. A fiber picking input door 10 is installed on one side of the fiber storage tank 8. The fiber storage tank 8 is connected to the cotton conveying branch pipe 7 through the fiber picking input door 10. A fiber picking output door 11 is installed on the other side of the fiber storage tank 8. The fiber storage tank 8 is connected to an output branch pipe 9 through the fiber picking output door 11. The output branch pipe 9 is connected to the cotton conveying main pipe 12. The cotton conveying main pipe 12 is connected to the machine of the previous process. The fiber picking input door 10 is driven to lift by a conveying door motor, thereby controlling the opening and closing of the fiber picking input door 10. The fiber picking output door 11 is driven to lift by a conveying door motor, thereby controlling the opening and closing of the fiber picking output door 11. A pressure sensing device is arranged at the bottom of the fiber storage tank 8. A cotton picking device is arranged in the housing 5. The cotton picking device includes a cotton picking housing 13, which is hollow and open at the upper side. The cross-section of the cotton picking housing 13 is a semicircle with a convex lower side. The geometric structure of the cotton picking housing 13 is identical to that of the arc-shaped section of the disc 1. The outer side of the cotton picking housing 13 is tightly attached to the inner side of the arc-shaped section of the disc 1. Fiber inlet slots 14 are arranged at equal arc intervals along the arc-shaped direction of the lower side of the cotton picking housing 13.A certain number of fiber grabbing beaters are arranged in the fiber grabbing shell 13, the fiber grabbing beaters include a beater roller 15, the beater roller 15 is a solid cylindrical body, two ends of the beater roller 15 are rotatably connected with the outward side and the inward side of the fiber grabbing shell 13 respectively, the beater roller 15 is driven to rotate by a corresponding transmission mechanism, fiber grabbing knife rings 16 are arranged at equal length intervals along the length direction of the beater roller 15, the fiber grabbing knife ring 16 includes a certain number of fiber grabbing blades 17, each fiber grabbing blade 17 is arranged along the circumferential direction of the beater roller 15 to form the fiber grabbing knife ring 16, the fiber grabbing blades 17 of the fiber grabbing knife ring 16 completely cover the circumferential direction of the beater roller 15 where the fiber grabbing blades 17 are located, the number of the fiber grabbing blades 17 on each fiber grabbing knife ring 16 gradually decreases from outside to inside along the length direction of the beater roller 15, and one side of the open upper side of the fiber grabbing shell 13 is connected with the outer shell 5 through an elastic expansion pin 18.

[0026] In use, the shell 5 of each cotton grabbing system is lifted, so that the arc-shaped portions divided by the disc 1 are in an open state, and then different types of cotton fibers classified according to the place of origin are placed in the arc-shaped portions of the disc 1, and then the shell 5 of each cotton grabbing system is lowered, so that the shell 5 of the cotton grabbing system is in closed connection with the arc-shaped portion of the corresponding disc 1, and at this time, the shell 5 of the cotton grabbing system is in pressing with the placed cotton fibers, and the pressure between the two is self-adaptively adjusted by the elastic expansion pin 18. In the pressing state, the upper cotton fibers are stretched into the cotton grabbing shell 13 through the fiber inlet seam 14, and the stretched cotton fibers are grabbed under the action of the fiber grabbing blades 17 of the fiber grabbing cutter ring 16 of the rotating fiber grabbing beater, and the preliminary opening of the cotton fibers is realized in the grabbing process. At this time, each fiber grabbing input door 10 is in an open state, and each fiber grabbing output door 11 is in a closed state. The grabbed cotton fibers are driven by the negative pressure airflow and enter the fiber storage tank 8 through the cotton conveying branch pipe 7, so that the weight of the cotton fibers in the fiber storage tank 8 is continuously increased. When the pressure sensing device detects that the weight of the cotton fibers in the fiber storage tank 8 reaches the set weight, the fiber grabbing input door 10 is lowered by the conveying door motor, so that the fiber grabbing input door 10 is closed, and at this time, the fiber grabbing beater stops working. When all the fiber grabbing input doors 10 are in a closed state, the fiber grabbing output door 11 is raised by the fiber grabbing motor, so that all the fiber grabbing output doors 11 are in an open state. Under the action of the negative pressure airflow, the cotton fibers in each fiber storage tank 8 enter the cotton conveying main pipeline 12 at the same time, and then the cotton fibers of each place of origin are mixed according to the weight. The cotton fibers entering the cotton conveying main pipeline 12 are then sent into the next machine. When the pressure sensing device re-detects that the weight of the fibers in the fiber storage tank 8 is zero again, the fiber grabbing output door 11 is lowered by the fiber grabbing motor, so that the fiber grabbing output door 11 is closed. When all the fiber grabbing output doors 11 are in a closed state, the fiber grabbing input door 10 is raised by the fiber grabbing motor, so that all the fiber grabbing input doors 10 are reopened, and at this time, the fiber grabbing beater starts working, so that the grabbing of the cotton fibers continues.

[0027] Step 3: cotton opening and cleaning. The grabbed cotton fibers are sequentially opened by the mixing and opening cotton machine, and in the opening process, the main mixing and auxiliary impurity removal of the cotton fibers are realized. The cotton fibers are further opened and carded by the carding beater opening cotton machine, and in the opening process, the main impurity removal and auxiliary mixing of the cotton fibers are realized. The cotton fibers are vibrated and opened by the vibration cotton feeder, and in the vibration opening process, the uniform delivery and impurity removal of the cotton fibers are realized. The uniform cotton roll is formed by the single-beater roll forming machine.

[0028] Fourth step: cotton carding, the cotton lap prepared in the third step is subjected to fine opening, carding, impurity removal and slivering by a carding machine to prepare a sliver, the carding machine is mainly used for carding fibers, the cotton lap prepared after the opening and cleaning process is fed into the carding machine, and after opening, mixing, carding and impurity removal, the fiber mass in a curled state is carded into a substantially straightened single fiber state, and the broken seed impurities and short fibers left after the cleaning process are removed, and the sliver of a specified size is collected in a sliver can.

[0029] Fifth step: cotton gilling, the sliver prepared in the fourth step is sequentially subjected to the cotton pre-lapping with improved evenness by a lapper, and the cotton lap with a new lap structure is prepared by a lapper, and the gilling cotton fiber mass is prepared by gilling, the gilling cotton machine is modified to include a cotton feeding and gripper plate part, a carding part and a separation and combination part, the cotton lap is fed into the cotton feeding and gripper plate part, the carding part is used for carding and straightening the front hook of the cotton fiber and removing short fibers, the separation and combination part is used for carding and straightening the rear hook of the cotton fiber and removing short fibers, and the gilled cotton fiber mass in a continuous state is prepared by simultaneously outputting the carded cotton fiber through the combination part.

[0030] Sixth step: multi-fiber mixed gilling, the gilled cotton fiber mass prepared in the fifth step and two or more than two selected synthetic fibers with excellent wearing performance are subjected to accurate grabbing according to the required mixing ratio by mixed gilling, the selected synthetic fibers are lyocell fibers, or modal fibers, or cotton wool fibers, or cotton silk fibers, or cotton polyester fibers, or cotton acrylic fibers.

[0031] The mixed grabbing of cotton is achieved by using a mixed grabbing machine. The outer shell 5 of each grabbing system is lifted, so that each arc-shaped part divided by the disc 1 is in an open state. Then the combed cotton fiber tufts and the selected synthetic fibers are placed in each arc-shaped part of the disc 1 respectively. Then the outer shell 5 of each grabbing system is put down, so that the outer shell 5 of the grabbing system and the arc-shaped part of the corresponding disc 1 are kept in closed connection. At this time, the grabbing outer shell 5 and the contained fibers are kept pressed, and the pressure between them is self-adaptively adjusted by the elastic expansion pin 18. Under the pressing state, the fibers on the upper side are stretched into the grabbing shell 13 through the fiber inlet slit 14. The stretched fibers are grabbed under the action of the fiber grabbing blades 17 of the fiber grabbing knife ring 16 of the rotating fiber grabbing beater. In the grabbing process, the preliminary opening of the fibers is realized. At this time, each fiber input door 10 is in an open state, and each fiber output door 11 is in a closed state. The grabbed fibers are driven by the negative pressure airflow and enter the fiber storage tank 8 through the cotton conveying branch pipe 7, so that the weight of the cotton fibers in the fiber storage tank 8 is continuously increased. When the pressure sensing device detects that the weight of the fibers in the fiber storage tank 8 reaches the set weight, the fiber input door 10 is lowered by the conveying door motor, so that the fiber input door 10 is closed. At this time, the fiber beater stops working. When all the fiber input doors 10 are in a closed state, the fiber output door 11 is raised by the fiber motor, so that all the fiber output doors 11 are in an open state. Under the action of the negative pressure airflow, the fibers in each fiber storage tank 8 enter the cotton conveying main pipeline 12 at the same time, and then the mixing of various fibers according to the weight is realized. The fibers in the cotton conveying main pipeline 12 are then sent to the next machine. When the pressure sensing device detects that the weight of the fibers in the fiber storage tank 8 is zero again, the fiber output door 11 is lowered by the fiber motor, so that the fiber output door 11 is closed. When all the fiber output doors 11 are in a closed state, the fiber input door 10 is raised by the fiber motor, so that all the fiber input doors 10 are reopened. At this time, the fiber beater starts working, so that the grabbing of fibers continues.

[0032] Step 7: mixed fiber opening and carding. The grabbed fibers are further uniformly mixed by a differential distance multi-bin cotton mixing machine, further opened and carded by a porcupine type opening machine, and impurities and mixed fibers are removed during the opening process. The fibers are uniformly mixed into rolls by a single beater roll forming machine. During the multi-bin cotton mixing process, the capacity of the multi-bin cotton mixing machine is increased, and the time delay is increased to achieve better mixing effect. During the porcupine type opening process, the mechanical parts between the beater and the dust rod are used to complete the opening and impurity removal. During the rolling process, the mechanical parts between the beater and the dust rod are used to complete the opening and impurity removal.

[0033] The eighth step is to mix the fibers and card the mixed sliver. The mixed sliver prepared in the seventh step is subjected to fine opening, carding, impurity removal and slivering in a sliver carding machine to form a mixed fiber sliver.

[0034] The ninth step is to mix the fibers and draw the mixed sliver. Six mixed slivers prepared in the eighth step are fed into the drawing system of the drawing frame to attenuate the fed mixed slivers and straighten the fibers in the process of attenuation. The attenuated mixed slivers are recombined to form a mixed fiber semi-sliver, so that the fibers are more finely and parallelly mixed in the process of recombination.

[0035] In the second drawing, eight mixed fiber semi-slivers are fed into the drawing system of the drawing frame to attenuate the fed mixed fiber semi-slivers and straighten the fibers in the process of attenuation. The attenuated mixed fiber semi-slivers are recombined to form a mixed fiber semi-sliver, so that the fibers are more finely and parallelly mixed in the process of recombination.

[0036] In the third drawing, eight mixed fiber semi-slivers are fed into the drawing system of the drawing frame to attenuate the fed mixed fiber semi-slivers and straighten the fibers in the process of attenuation. The attenuated mixed fiber semi-slivers are recombined to form a mixed fiber semi-sliver, so that the fibers are more finely and parallelly mixed in the process of recombination.

[0037] The tenth step is to mix the fibers and form a roving. The mixed fiber semi-sliver prepared in the ninth step is attenuated by the drawing system of the roving frame and twisted and wound by the twisting system to form a short fiber blended roving with a certain strength. The drawing system of the roving frame continues to improve the straightness of the fibers, and the twisting makes the formed roving have a certain strength, so as to create conditions for the large drawing of the spinning frame. The roving process design mainly aims to improve the quality of the roving, achieve stable elongation, small weight difference, uniform yarn evenness, compact structure, good forming, etc. The roving frame needs to improve the mechanical flat repair quality, the engagement of the drawing gear is normal, the roller bending and the eccentricity of the rubber roller meet the requirements, there is no oil shortage, the opening of the condenser is consistent and the installation position is appropriate, the rubber roller rotates flexibly, the starting position of the iron cannon is correct, the elongation is stable, the spindle shell is clean, the operation is normal and the channel is free of hanging flowers, etc., so as to improve the roving evenness, reduce the weight unevenness and reduce the yarn defects.

[0038] The tenth step is fine spinning, including the first fine spinning and the second fine spinning. The first fine spinning is performed by using a ring spinning machine, and the transmission between the middle roller, the back roller and the front roller of the ring spinning machine is disconnected. The paper strip obtained by cutting is fed into the front roller together with the vinylon filament, and the feeding point of the vinylon filament on the front roller is located at the center of the feeding point of the paper strip on the front roller. The two are continuously outputted by the rotating front roller, and immediately after the output, the output is subjected to the action of the twisting twist. Under the action of the twisting twist, the paper strip with a certain width is twisted into paper yarn, and the vinylon filament is wrapped in the center during the twisting process, so that the composite core yarn with the vinylon in the center and the paper yarn wrapped outside is prepared.

[0039] The second fine spinning is performed by using a ring spinning machine. The composite core yarn prepared is fed into the ring spinning machine together with the short fiber blended roving prepared in the tenth step. The short fiber blended roving is fed into the back roller of the drafting system, and then is outputted in sequence through the middle roller and the front roller, so as to be subjected to the finishing drafting action of the drafting multiple of the back drafting zone between the middle roller and the back roller within 1.1, and then is subjected to the attenuating drafting action of the drafting multiple of the front drafting zone between the middle roller and the front roller above 20, so as to obtain the untwisted short fiber mixed sliver with a certain width. The short fiber sliver is continuously outputted through the front roller, and the composite core yarn is directly fed into the front roller, and the feeding point of the composite core yarn on the front roller is located at the center of the output point of the short fiber mixed sliver on the front roller. The two are continuously outputted by the rotating front roller, and immediately after the output, the output is subjected to the action of the twisting twist. Under the action of the twisting twist, the short fiber blended yarn with a certain width is twisted into the short fiber blended yarn wrapped outside, and the composite core yarn is wrapped in the center during the twisting process, so that the composite yarn with the composite core yarn in the center and the short fiber blended yarn wrapped outside is prepared.

[0040] The twelfth step is composite fabric processing. The composite yarn prepared in the tenth step is processed into the initial composite fabric by weaving. The initial composite fabric prepared is placed in a hot water bath. Under the action of the hot water bath, the vinylon filament in the center of the composite yarn gradually dissolves. At the same time, the wrapped paper yarn of the composite core yarn swells after absorbing moisture and heat, so as to extrude to the center. The space filled by the dissolved vinylon filament makes the initial composite fabric continue to maintain the original state until the vinylon filament is completely dissolved, so as to obtain the required composite fabric. When the external temperature decreases, the paper yarn shrinks, so that the external air enters the center of the composite yarn in the air pressure difference, and an air layer is formed in the composite yarn, so as to realize the warmth-keeping effect of the composite fabric. When the external temperature rises and the humidity of the wearing environment rises, the paper yarn swells rapidly after absorbing moisture and heat, so as to realize the rapid moisture absorption effect of the composite fabric. The swollen paper extrudes to the center of the composite yarn, so as to extrude and remove the air in the center, so that the fabric is fluffy and full, and the cool feeling of wearing is realized.

[0041] Take the preparation of outer wrapping yarn density 45S and blending ratio JC60 / T40 of blended short fiber yarn, paper yarn with linear density of 80S, and composite yarn of vinylon filament with linear density of 30dtex and its corresponding composite fabric as an example, the corresponding process parameters are as follows:

[0042] (1) Raw material selection:

[0043] Cotton fiber selection

[0044]

[0045]

[0046] Polyester fiber selection

[0047]

[0048] (2) The process flow is designed as follows

[0049] Raw cotton: cleaning→carding→preparation→sliver→combing polyester / cotton: cleaning→carding→head→two→three→roving composite yarn: spinning→winding

[0050] Weaving: multifunctional automatic knitting machine→hot water bath

[0051] (3) Key process parameter design

[0052] Cotton opening and cleaning:

[0053] Mixed grabber

[0054]

[0055] Mixed cotton opener

[0056]

[0057] Carding needle beater opener

[0058]

[0059] Vibration feeder

[0060]

[0061] Single beater winder

[0062]

[0063] Cotton carding:

[0064]

[0065] Cotton comber:

[0066] Pre-drawing:

[0067]

[0068]

[0069] Drawing and rolling:

[0070]

[0071] Combing:

[0072]

[0073] PET / combed cotton opening and cleaning:

[0074] Mixed grabber

[0075]

[0076]

[0077] Multi-warehouse cotton mixer

[0078]

[0079] Porcupine cotton opener

[0080]

[0081] Vibrating cotton feeder

[0082]

[0083] Single beater winder

[0084]

[0085] PET / combed cotton carding:

[0086]

[0087] PET / combed cotton drawing:

[0088]

[0089] PET / combed cotton roving:

[0090]

[0091]

[0092] PET / combed cotton second spinning:

[0093]

[0094] Winding:

[0095]

[0096] (4) Yarn quality test

[0097]

[0098] The quality of the composite yarns spun is tested, and it is easy to see from the test results that the composite yarns processed by the method of the application have excellent evenness, strength, etc., that is, excellent comprehensive quality of the yarns.

[0099] (5) Weaving:

[0100] Knitted fabrics are prepared using the spun composite yarns, the machine parameters are: horizontal density: 65 rows / cm, vertical density: 95 columns / cm, surface density: 320 g / m2, and the processed knitted fabrics are treated with hot water bath to obtain the required composite yarn fabrics. The thermal conductivity, air permeability and moisture permeability of the composite yarn fabrics are tested, and the test results are shown in the following table:

[0101] Thermal resistance (m 2 × K / W) moisture permeability (g / m 2 / 24h) Air permeability (mm / s) 0.22 4701.36 4968.68

[0102] It is easy to see from the test results that the knitted fabrics prepared using the spun composite yarns have excellent wearability, the moisture permeability reaches the first-class product requirement of FZ / T73016-2013 knitted thermal underwear, and the thermal resistance value exceeds the requirement of the surface thermal resistance of the garment in the European EN342 standard.

[0103] The above embodiments shown in the drawings detail the structure, features and effects of the application. The above description is only the preferred embodiments of the application, but the application is not limited by the drawings. Any changes or modifications made in accordance with the concept of the application, or equivalent embodiments with equivalent changes, are still within the scope of the application.

Claims

1. A method for producing a moisture-permeable and warm composite fabric, characterized by, The method comprises the following steps: The selected cotton fibers are classified according to the origin as the main component, mixed and grabbed by a mixed grabbing machine, then sequentially opened, scutched, carded and combed to obtain combed cotton fiber tufts, and the combed cotton fiber tufts and the selected two or more synthetic fibers with excellent wearing performance are mixed and grabbed by a mixed grabbing machine, the disc of the mixed grabbing machine is divided into corresponding arc-shaped parts, and the number of the arc-shaped parts divided by the disc is the same as the number of the origins of the selected cotton fibers or one more than the number of the types of the selected synthetic fibers; Each arc-shaped part is provided with a cotton grabbing device, each cotton grabbing device is connected with a cotton conveying branch pipeline, a fiber storage tank is arranged at one end of each cotton conveying branch pipeline, one side of the fiber storage tank is connected with the cotton conveying branch pipeline through an input door, the other side of the fiber storage tank is connected with a cotton conveying main pipeline through an output door, the input door and the output door are both controllable lifting doors, when the input door is opened, the fibers grabbed by the cotton grabbing beater enter the fiber storage tank, when the weight of the fibers in the fiber storage tank reaches a set value, the input door is closed and the output door is opened, so that the fibers with the set weight in the fiber storage tank are conveyed into the cotton conveying main pipeline, the accurate mixing ratio control of the selected various fibers is realized, the grabbed mixed fibers are sequentially opened, scutched and carded to obtain a mixed fiber sliver, the mixed fiber sliver is then evenly drafted in three passes to obtain a mixed slubbing, and the mixed slubbing is then drafted into a short fiber blended roving, in the first spinning process, the paper sliver obtained by cutting is fed together with the vinylon filament to obtain a composite core yarn with the vinylon in the center and the paper yarn wrapped outside, in the second spinning process, the obtained composite core yarn is fed together with the short fiber blended roving to obtain a composite yarn with the composite core yarn in the center and the short fiber blended yarn wrapped outside, and the composite yarn is woven into a fabric, the vinylon fiber in the center is dissolved after the fabric is soaked in hot water, at the same time of the dissolution of the vinylon, the wrapped paper yarn in the composite core yarn swells and presses towards the center after being wetted and heated, so that the fabric continues to maintain the original state until the paper yarn is cooled and dried, and the required composite fabric is obtained; when the external temperature decreases, the paper yarn shrinks, the external air enters the center of the composite yarn under the action of the air pressure difference, an air layer is formed in the composite yarn, and the warmth-keeping effect of the composite fabric is realized; when the external temperature and the humidity of the wearing environment increase, the paper yarn swells rapidly after being wetted and heated, the rapid moisture absorption effect of the composite fabric is realized, the swollen paper yarn presses towards the center of the composite yarn, the air in the center is pressed out, the fabric is fluffy and full, and the cool feeling of wearing is realized.

2. The method for producing a moisture-permeable and warm composite fabric according to claim 1, characterized by: The mixed grabbing machine comprises a disc, the disc comprises an outer disc and an inner disc, the outer disc and the inner disc are both hollow cylindrical structures with an open upper side, the outer disc and the inner disc form the disc for containing fibers, a certain number of baffles are arranged in the disc, the baffles are arranged at equal arc intervals along the circumferential direction of the disc, each baffle divides the disc into a certain number of arc-shaped parts, and a cotton grabbing system is arranged at the upper part of each arc-shaped part divided by the disc.

3. The method of claim 2, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: The cotton grabbing system comprises an arc-shaped shell, which is hollow and open at the lower side, the cross section of the shell is a convex semicircle, the inner arc-shaped side of the lower side of the shell is rotatably connected with the upper side of the inner disc of the arc-shaped part divided by the disc, the outer arc-shaped side of the lower side of the shell is completely identical with the upper side of the outer disc of the arc-shaped part divided by the disc, the inner arc-shaped side of the lower side of the shell is completely identical with the upper side of the inner disc of the arc-shaped part divided by the disc, and when the shell is pressed down, the inner arc-shaped side of the lower side of the shell is completely aligned with the upper side of the inner disc of the arc-shaped part divided by the disc, and the outer arc-shaped side of the lower side of the shell is completely aligned with the upper side of the outer disc of the arc-shaped part divided by the disc, a cotton grabbing outlet is formed at the center of the shell, the cotton grabbing outlet is connected with a cotton conveying branch pipeline, the other end of each cotton conveying branch pipeline is connected with a cotton conveying main pipeline, a fiber storage tank is arranged at the connection between each cotton conveying branch pipeline and the cotton conveying main pipeline, the fiber storage tank is a rectangular hollow closed structure, one side of the fiber storage tank is additionally provided with a cotton grabbing input door, the fiber storage tank is connected with the cotton conveying branch pipeline through the cotton grabbing input door, the other side of the fiber storage tank is additionally provided with the cotton grabbing output door, the fiber storage tank is connected with the output branch pipeline through the cotton grabbing output door, the output branch pipeline is connected with the cotton conveying main pipeline, the cotton conveying main pipeline is connected with a machine in a previous process, the cotton grabbing input door is driven to lift by a conveying door motor to control the opening and closing of the cotton grabbing input door, the cotton grabbing output door is driven to lift by a conveying door motor to control the opening and closing of the cotton grabbing output door, a pressure sensing device is arranged at the bottom of the fiber storage tank, and the cotton grabbing device is arranged in the shell. ​ 4. The method of claim 3, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: The cotton grabbing device comprises a cotton grabbing shell, which is hollow and open at the upper side, the cross section of the cotton grabbing shell is a lower convex semicircle, the geometric structure of the cotton grabbing shell is the same as that of the arc-shaped part of the disc, and the outer side of the cotton grabbing shell is tightly attached to the inner side of the arc-shaped part of the disc, the fiber inlet slits are opened at the arc-shaped direction of the lower side of the cotton grabbing shell at equal arc intervals, a certain number of fiber grabbing beaters are arranged in the cotton grabbing shell, the fiber grabbing beater comprises a beater roller, the beater roller is a solid cylindrical body, the two ends of the beater roller are rotatably connected to the outward side and the inward side of the cotton grabbing shell respectively, the beater roller is driven to rotate by the corresponding transmission mechanism, the fiber grabbing knife rings are arranged at equal length intervals along the length direction of the beater roller, the fiber grabbing knife ring comprises a certain number of fiber grabbing blades, each fiber grabbing blade is arranged along the circumferential direction of the beater roller to form a fiber grabbing knife ring, the fiber grabbing blades of the fiber grabbing knife ring completely cover the circumferential direction of the beater roller, the number of the fiber grabbing blades on each fiber grabbing knife ring gradually decreases from the outside to the inside along the length direction of the beater roller, and one side of the open upper side of the cotton grabbing shell is connected to the outer shell through an elastic expansion pin. ​ 5. The method of claim 1, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: The modified cotton carding machine comprising a cotton feeding and clamp plate part, a carding part and a separation and combination part is used in the carding, the cotton roll is fed into the cotton feeding and clamp plate part, the front end hook of the cotton fiber is straightened and the short fiber is removed in the carding part, the rear end hook of the cotton fiber is straightened and the short fiber is removed in the separation and combination part, and the continuous output of the carded cotton fiber is realized through the combination part, so that the continuous state of the carded cotton fiber cluster is prepared. ​ 6. The method of claim 1, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: The synthetic fiber is lyocell fiber, or modal fiber, or cotton type wool fiber, or cotton type silk fiber, or cotton type polyester fiber, or cotton type acrylic fiber. ​ 7. The method of claim 1, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: The first spinning adopts a ring spinning machine, the transmission between the middle roller, the rear roller and the front roller of the ring spinning machine is disconnected, the cut paper strip and the vinylon filament are fed into the front roller together, and the feeding point of the vinylon filament on the front roller is located at the center of the feeding point of the paper strip on the front roller, both are continuously outputted by the rotating front roller, and are immediately subjected to the action of twisting twist degree after output, under the action of the twisting twist degree, the paper strip with a certain width is twisted into paper yarn, and the vinylon filament is wrapped in the center in the twisting process, so as to prepare the composite core yarn with vinylon in the center and paper yarn wrapped outside. ​ 8. The method of claim 1, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: The second spinning uses a ring spinning machine, the prepared composite core yarn and the short fiber blended roving are fed together, the short fiber blended roving is fed through the back roller of the drafting system, and then is output through the middle roller and the front roller in sequence, so that the short fiber mixed sliver without twist and with a certain width is obtained, the short fiber sliver is continuously output through the front roller, the composite core yarn is directly fed by the front roller, and the feeding point of the composite core yarn on the front roller is located at the center of the output point of the short fiber mixed sliver on the front roller, both are continuously output through the rotating front roller, and are immediately subjected to the action of twisting twist degree after output, under the action of the twisting twist degree, the short fiber mixed sliver with a certain width is twisted into an outer wrapped short fiber blended yarn, and the composite core yarn is wrapped in the center during the twisting process, so that the composite yarn with the composite core yarn in the center and the outer wrapped short fiber blended yarn is prepared. ​ 9. The method of claim 1, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: In the cotton opening and cleaning process, the grabbed cotton fibers are sequentially subjected to opening in a mixing cotton opener, and main mixing and auxiliary impurity removal of the cotton fibers are realized in the opening process, further opening and carding in a comb needle beater opener, and main impurity removal and auxiliary mixing of the cotton fibers are realized in the opening process, vibration opening in a vibration cotton feeder, and uniform conveying and impurity removal of the cotton fibers are realized in the vibration opening process, and uniform cotton lap is prepared by a single beater lap former. ​ 10. The method of claim 1, wherein the moisture permeable and warm-keeping composite fabric is produced by the steps of: In the mixed fiber opening and cleaning process, the grabbed fibers are sequentially subjected to further uniform mixing in a differential multi-warehouse cotton blender, further opening and carding in a porcupine cotton opener, and impurity removal and mixing of the fibers are realized in the opening process, and uniform mixed lap is prepared by a single beater lap former; in the multi-warehouse cotton blending process, the capacity of the multi-warehouse cotton blender is increased, and the time delay is increased according to the principle of sufficient mixing, so that better mixing effect is achieved, the mechanical part between the beater and the dust bar is relied on to complete the opening and impurity removal in the porcupine cotton process, and the mechanical part between the beater and the dust bar is relied on to complete the opening and impurity removal in the lap process. ​

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