Fine cotton apocynum venetum lyocell blended yarn and spinning method thereof

Abstract

The invention discloses a refined cotton apocynum venetum lyocell blended yarn and a spinning method thereof, and belongs to the technical field of spinning processes. The refined cotton apocynum venetum lyocell blended yarn comprises the following components in percentage by mass: 40 to 65 percent of combed cotton sliver, 20 to 30 percent of lyocell and 15 to 30 percent of apocynum venetum. The spinning method of the refined cotton apocynum venetum lyocell blended yarn comprises the steps that apocynum venetum fibers are subjected to heaping pretreatment; uniformly mixing the apocynum venetum fibers with the lyocell fibers; the apocynum venetum lyocell cotton rolls are carded through a carding machine; performing pre-drawing on apocynum venetum lyocell card slivers, performing primary drawing on the apocynum venetum lyocell card slivers and combed slivers, and performing secondary drawing; the blended strips are drawn and twisted through a roving frame; and drawing and twisting the roving through a spinning frame. By the adoption of the refined cotton apocynum venetum lyocell blended yarn and the spinning method thereof, the problems that an existing apocynum venetum and cotton fiber blended yarn is poor in quality and low in strength are solved.

Description

Technical Field

[0001] The invention relates to the technical field of spinning technology, in particular to a refined cotton, apocynum lyocell blended yarn and a spinning method thereof. Background Art

[0002] Due to its unique properties, such as antibacterial, far infrared, moisture absorption and breathability, apocynum fiber is widely used in blended yarns. At present, apocynum has been blended with a variety of fibers, such as acrylic, modal, cotton, etc., to form a variety of blended yarn products. Apocynum blended yarn is mainly produced on the cotton spinning system. In the market, apocynum fiber is generally blended with long-staple cotton to solve the problem of short length and poor length uniformity of apocynum itself. However, the cost of apocynum fiber itself (200,000 yuan / ton and above) is too high, and the cost of long-staple cotton (about 20,000 yuan / ton) is also relatively high. In addition, in order to meet the various physical indicators of the yarn, the proportion of apocynum in the blended yarn is relatively low, resulting in the fabric's health care properties of apocynum, such as antibacterial and far-infrared properties, failing to meet national standards.

[0003] The existing patent CN 103572444 B discloses a blended yarn of apocynum fiber, hemp fiber and cotton fiber and its manufacturing process, wherein: the weight percentage of apocynum fiber in the blended yarn is 10-30; the weight percentage of hemp fiber in the blended yarn is 10-30, and the weight percentage of cotton fiber in the blended yarn is 60%. Its manufacturing process is: weigh the preferred count apocynum fiber, hemp fiber and combed cotton strips or combed cotton strips according to their respective contents and divide them into small piles, uniformly add aqueous solution, and make a blended yarn of apocynum fiber, hemp fiber and cotton fiber through the process of mixing hemp, cleaning, combing, drawing, roving and spinning, and the relative humidity of the production environment of each process is 58%-65%. The blended yarn produced has a CV / % of 33.89, -50% fine sections are above 3600, +50% thick sections are above 5000, +200% neps are above 7300, and the breaking strength is 17.5. The blended yarn obtained in the patent has low strength, uniformity and poor quality.

[0004] The existing patent CN 106757615 B discloses a method for producing a cotton / loplum ramie blended yarn, wherein the loplum ramie fiber with an average strength of 17.73 cN, an elongation of 3.5%, a breaking elongation of 0.34 mm, a breaking work of 2.15 cN×mm, a strength of 10.62 cN / dtex, and a linear density of 2.3 dtex is blended with long-staple cotton fiber to produce a cotton / loplum ramie blended yarn with a blending ratio of 88 / 12 and 70 / 30 respectively. The method comprises the following steps: (1) the long-staple cotton fiber is subjected to a cleaning and carding process, a combing preparation process, and a combing process to produce a combed cotton sliver; (2) the loplum ramie fiber is subjected to a degumming process and a pre-combing preparation process to obtain a dry loplum ramie fiber; (3) the combed cotton sliver and the dry loplum ramie fiber are hand-pulled and mixed, and then fed into a carding machine through an automatic cotton feeding machine, and the final cotton / loplum ramie blended yarn is produced through the processes of carding, pre-combing, drawing, roving, and spun spinning. The present invention can make a blended yarn of good quality from apocynum and cotton fiber, which optimizes the complementarity between apocynum and cotton fiber and combines the antibacterial health care function of apocynum and the moisture absorption and air permeability of cotton. The blended yarn has a breaking strength of 17.28 cN / tex, a breaking elongation of 4.21%, and a yarn evenness CV / % of 20.11. The blended yarn has low strength and poor yarn uniformity. Summary of the invention

[0005] The invention aims to provide a refined cotton apocynum lyocell blended yarn and a spinning method thereof, so as to solve the problems of poor quality and low strength of the existing apocynum lyocell and cotton fiber blended yarn.

[0006] To achieve the above object, the present invention provides a refined cotton, apocynum lyocell blended yarn, comprising 40wt.%-65wt.% of combed cotton sliver, 20wt.%-30wt.% of lyocell and 15wt.%-30wt.% of apocynum linseed.

[0007] Preferably, the composition comprises 65 wt.% of combed cotton sliver, 20 wt.% of lyocell and 15 wt.% of apocynum ramie.

[0008] Preferably, the composition comprises 40 wt.% of combed cotton sliver, 30 wt.% of lyocell and 30 wt.% of apocynum ramie.

[0009] Preferably, the combed cotton sliver is fine-staple cotton.

[0010] The spinning method of the above-mentioned refined cotton apocynum lyocell blended yarn comprises the following steps:

[0011] S1, performing a suffocating pretreatment on the apocynum venetum fiber;

[0012] S2, adding the apocynum fiber and the lyocell fiber into a multi-bin cotton mixer according to the mass ratio, and rolling them from the fine cotton opener to the cotton roll machine to ensure the mixing uniformity of the apocynum fiber and the lyocell fiber;

[0013] S3, using a carding machine to card the apocynum lyocell cotton roll to obtain apocynum lyocell sliver, the licker-in speed during carding is 735 rpm, the doffer speed is 25 rpm, the cylinder speed is 360 rpm, the sliver basis weight is 24g / 5m, the vehicle speed is 115m / min, the dust removal knife angle is 45°, and the movable cover is 101mm / min;

[0014] S4, pre-drawing the apocynum lyocell raw sliver, drawing the pre-drawn sliver with the combed cotton sliver, and then drawing the pre-drawn sliver twice to obtain a blended sliver;

[0015] S5, the blended sliver is pulled and twisted through a roving frame to form roving; the roving weight is 4.8g / 10m, the twist coefficient is 110, the speed is 850, the roller gauge is 8×25×29, and the back zone drafting multiple is 1.15;

[0016] S6. The roving is drawn and twisted through a spinning frame to obtain a blended yarn; during the drawing and twisting process, the spun yarn has a humidity of 55-65, a count of 32s, a fineness of 18.3tex, a roller gauge of 18×28, a machine speed of 10000m / min, a twist coefficient of 380, a wire ring of Blake C1UL 5 / 0, a mesh ring of 120 mesh, and a leather roller of WRC965.

[0017] Preferably, in S1, the specific operation of steaming is: using 10% of the mass of the apocynum fiber to spray water evenly on the apocynum fiber, steaming the apocynum fiber for more than 24 hours, and maintaining the moisture regain at 13%-15%.

[0018] Preferably, in S3, a carding pretreatment device for pretreatment of the apocynum lyocell cotton roll is arranged at the cotton inlet of the carding machine, and the carding pretreatment device comprises a supporting mechanism, a water spraying mechanism and a squeezing mechanism which are arranged in sequence, the supporting mechanism is used to support the apocynum lyocell cotton roll, the water spraying mechanism is used to spray water on the apocynum lyocell fiber layer, and the squeezing mechanism is used to penetrate water on the surface of the apocynum lyocell fiber layer; the supporting mechanism comprises a bottom plate, two supporting plates are arranged opposite to each other at one end of the bottom plate, a rotating seat is rotatably arranged on the supporting plate, and a first hydraulic pressure is arranged on one supporting plate to drive the rotating seat to slide horizontally Cylinder, the first hydraulic cylinder is rotatably connected with the rotating seat, and the first motor that drives the rotating seat to rotate is arranged on the other support plate; the rotating seat is provided with a clamping structure for clamping the Lop Neck Lyocell cotton roll; the extrusion mechanism includes a second support frame, the second support frame is fixed on the bottom plate, the second support frame is rotatably provided with an upper roller and a lower roller, the second support frame is provided with a motor that drives the lower roller to rotate, an adjusting groove is arranged on the upper part of the second support frame, a mounting seat is slidably arranged in the adjusting groove, both ends of the upper roller are rotatably connected with the mounting seat, the mounting seat is provided with a second motor that drives the upper roller to rotate, and a second hydraulic cylinder that drives the mounting seat to slide is arranged on the top of the second support frame.

[0019] Preferably, the clamping structure includes a plurality of blocks, which correspond one to one with the slots on the ramie lyocell cotton reel; a slot for inserting the cotton reel is provided at one end of the rotating seat close to the cotton reel, and the blocks are evenly distributed in a circular array on the side wall of the slot; a second mounting slot is provided at the rear of the slot, a slide plate is provided in the slot, a sliding seat is provided in the second mounting slot, the slide plate and the sliding seat are connected by a sliding rod, a through hole for the sliding rod to pass through is provided between the slot and the second mounting slot, the sliding rod is slidably connected to the through hole, a first spring is provided between the sliding seat and the second mounting slot, and the first spring applies an outward thrust to the slide plate through the sliding seat and the sliding rod; a limiting slot is provided outside the second mounting slot, a push plate is slidably provided in the limiting slot, and the limiting slot and the second mounting slot are connected by a third mounting slot A transmission plate is rotatably arranged in the third mounting groove, a torsion spring is arranged between the transmission plate and the third mounting groove so that one end of the transmission plate contacts the end face of the sliding seat, a transmission groove is arranged on the push plate so that the end head of the transmission plate is inserted, and the transmission plate drives the push plate to slide in the limiting groove through the transmission groove, and a push rod is arranged on the push plate, and a perforation is arranged on the card block, and the end of the perforation close to the slot is an inclined surface gradually inclined outward from the inner surface to the outer surface, and a through hole is arranged on the limit plate arranged in the limiting groove for the push rod to pass through, and a second spring is arranged between the limiting plate and the push plate so that the end face of the push rod contacts the inclined surface of the perforation, and a third spring is arranged between the card block and the first mounting groove to apply outward pulling force to the card block, and the card block is slidably connected to the first mounting groove, and the first mounting groove is arranged on the end face of the rotating seat close to the cotton reel shaft.

[0020] Preferably, the water spraying mechanism comprises a first support frame fixed on the base, and the upper and lower parts of the first support frame are respectively provided with water spraying structures for spraying water on the upper surface and the lower surface of the apocynum lyocell fiber layer; the water spraying structure comprises a water pipe, which is connected to an external water source, and a plurality of atomizing nozzles are evenly arranged on one end of the water pipe close to the apocynum lyocell fiber layer; a transmission shaft is rotatably arranged at the top of the first support frame, a rotating plate is arranged at one end of the transmission shaft, a transmission rod is slidably arranged on the rotating plate, a sliding sleeve is arranged at one end of the rotating rod, and the sliding sleeve is slidably arranged on the connecting rod, and the two ends of the connecting rod are respectively connected to the water pipe through the connecting plate, and the middle part of the connecting plate is rotatably connected to the fixed rod arranged on the first support frame, and a second bevel gear is arranged at the other end of the transmission shaft, which meshes with the first bevel gear arranged at one end of the rotating shaft, and the rotating shaft is rotatably connected to the first support frame, and a transmission wheel is arranged at the other end of the rotating shaft, and the transmission wheel is connected to the pulley arranged on the output shaft of the first motor through a transmission belt.

[0021] Preferably, in S4, in the pre-drawing process, 6 strips are used for drawing, with a basis weight of 24g / 5m, a roller gauge of 5*15, and a rear zone drafting multiple of 1.9; in the first-pass drawing process, 2 combed cotton strips with a basis weight of 24g / 5m are used for drawing and 3 pre-drawing strips with a basis weight of 22g / 5m, a total drafting multiple of 5.45, a rear zone drafting multiple of 1.9, and a roller gauge of 4*14; in the second-pass drawing process, 7 head-drawing strips are used for drawing, the second-pass drawing has a basis weight of 20g / 5m, a total drafting multiple of 7.7, a rear zone drafting multiple of 1.14, a roller gauge of 4*14, and a vehicle speed of 260m / min.

[0022] The advantages and positive effects of the refined cotton apocynum lyocell blended yarn and the spinning method thereof of the present invention are:

[0023] 1. The present invention adopts fine-staple cotton instead of long-staple cotton and adopts lyocell fiber instead of long-staple cotton fiber, which effectively reduces the cost of blended yarn. The present invention has a high content of apocynum, which ensures the effect of apocynum in the blended yarn.

[0024] 2. In the preparation process of blended yarn, lyocell fiber and apocynum fiber are firstly blended to solve the problem that apocynum fiber is short, has poor length uniformity and is not easy to be spun in pure form.

[0025] 3. Before carding the apocynum flax and lyocell fibers, a pretreatment device is provided. By pretreating the apocynum flax and lyocell fibers, it is beneficial to reduce the shedding of the apocynum flax, ensure the content of the apocynum flax, improve the utilization rate of the apocynum flax, and reduce material waste.

[0026] 4. The blended yarn prepared by the spinning method of the present invention has high strength and good quality, and can realize the production of high-count and high-quality apocynum blended yarn.

[0027] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The spinning flow chart of the refined cotton apocynum lyocell blended yarn of the present invention;

[0029] Figure 2 Schematic diagram of the three-dimensional structure of the carding pretreatment device according to the embodiment of the present invention Figure 1 ;

[0030] Figure 3 Schematic diagram of the three-dimensional structure of the carding pretreatment device according to the embodiment of the present invention Figure 2 ;

[0031] Figure 4 It is a front view structural schematic diagram of a carding pretreatment device according to an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the three-dimensional structure of a water spray mechanism according to an embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating seat according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of a rotating seat according to an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the local structure of the rotating seat according to an embodiment of the present invention.

[0036] Reference numerals

[0037] 1. Support mechanism; 11. Bottom plate; 12. Support plate; 13. First motor; 14. First hydraulic cylinder; 15. Rotating seat; 16. Slot; 17. Slide plate; 18. First mounting slot; 19. Block; 110. Second mounting slot; 111. Slide bar; 112. Slide seat; 113. First spring; 114. Transmission plate; 115. Third mounting slot; 116. Limiting slot; 117. Push plate; 118. Transmission slot; 119. Push rod; 120. Limiting plate; 121. Second spring; 122. Perforation; 123. Third spring;

[0038] 2. water spray mechanism; 21. first support frame; 22. water pipe; 23. transmission shaft; 24. rotating plate; 25. transmission rod; 26. sliding sleeve; 27. connecting rod; 28. connecting plate; 29. ​​fixing rod; 210. transmission belt; 211. rotating shaft; 212. transmission wheel; 213. first bevel gear; 214. second bevel gear; 215. supporting seat;

[0039] 3. Extrusion mechanism; 31. Second support frame; 32. Upper roller; 33. Lower roller; 34. Mounting seat; 35. Second hydraulic cylinder; 36. Second motor. DETAILED DESCRIPTION

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application. In the event of any inconsistency, the meaning described in this specification or the meaning derived from the contents recorded in this specification shall prevail. In addition, the terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit this application. In order to accurately describe the technical content in this application and to accurately understand the present invention, the following explanations or definitions are given to the terms used in this specification before describing the specific embodiments:

[0042] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0043] like Figure 1 A fine cotton, apocynum lyocell blended yarn comprises 40wt.%-65wt.% of combed cotton sliver, 20wt.%-30wt.% of lyocell and 15wt.%-30wt.% of apocynum lyocell.

[0044] Combed cotton sliver is fine-staple cotton.

[0045] Using fine-staple cotton instead of long-staple cotton can reduce the material cost of blended yarn. The fiber length of lyocell is not less than 32mm. Using lyocell instead of long-staple cotton can solve the problems of short apocynum, poor length uniformity, and difficulty in pure spinning. In addition, the cost of lyocell is lower than that of long-staple cotton, which can reduce the material cost of blended yarn.

[0046] The spinning method of fine cotton apocynum lyocell blended yarn comprises the following steps:

[0047] S1. Pre-treat the apocynum fiber by suffocating. The specific operation of suffocating is: spray 10% of the mass of the apocynum fiber on the apocynum fiber evenly, suffocate the apocynum fiber for more than 24 hours, and keep the moisture regain at about 14%. Suffocating the apocynum fiber is beneficial to softening the fiber. The apocynum fiber absorbs water and becomes softer and more elastic, which helps to reduce the breakage of the fiber during the cotton blending process.

[0048] S2. Add the apocynum fiber and the lyocell fiber into a multi-bin cotton mixer according to the mass ratio, and roll them up in a cotton roll machine via a fine cotton opener to ensure the mixing uniformity of the apocynum fiber and the lyocell fiber.

[0049] First, the WF1007 disc plucker is used to grab the apocynum fiber and lyocell fiber, and the lyocell fiber and apocynum fiber are fed from the back of the JWF1029 multi-bin cotton mixer. After being opened by the JWF1115 opener, they are passed through the A045B condenser and the FA046A vibrating cotton box and then enter the FA076F lap machine for lapping to ensure the meter weight of the lap and the uniform mixing of the two fibers. In the FA076F lap machine, the speed of the A076 beater is reduced to reduce the damage to the fiber and reduce the short fibers.

[0050] S3. A JWF1203 carding machine is used to card the apocynum lyocell cotton roll to obtain apocynum lyocell raw sliver. During carding, the licker-in speed is 735 rpm, the doffer speed is 25 rpm, the cylinder speed is 360 rpm, the raw sliver basis weight is 24 g / 5 m, the machine speed is 115 m / min, the dust removal knife angle is 45°, the cover z1 / z2 is 21 / 39, and the movable cover is 101 mm / min.

[0051] Carding is an important step in the whole process of blended yarn production. Since the apocynum fiber is relatively short, the apocynum will fall off seriously during the carding process, which reduces the content of apocynum in the whole blended yarn, causes serious loss of apocynum, and increases the production cost.

[0052] Before carding the apocynum lyocell cotton roll, the present invention arranges a carding pretreatment device at the cotton inlet of the carding machine to pretreat the apocynum lyocell cotton roll to reduce the falling of the apocynum lyocell cotton roll, increase the content of the apocynum lyocell in the blended yarn, and reduce the loss of the apocynum lyocell.

[0053] like Figure 2 , Figure 3 , Figure 4As shown. The carding pretreatment device includes a supporting mechanism 1, a water spraying mechanism 2 and a squeezing mechanism 3 which are arranged in sequence. The supporting mechanism 1 is used to support the apocynum lyocell cotton roll and provide a certain rotation speed for the apocynum lyocell cotton roll, so that the apocynum lyocell cotton roll can adapt to the cotton feeding speed of the carding machine, reduce the situation that the apocynum fiber is broken due to the traction force during the cotton feeding, and is conducive to reducing the damage to the apocynum fiber caused by the cotton feeding, and reducing the hemp falling. The water spraying mechanism 2 is used to spray water on the apocynum lyocell fiber layer. By uniformly spraying water mist on the apocynum lyocell fiber layer, the water softens the apocynum fiber and reduces the breakage of the apocynum fiber during the carding process. In addition, water spraying is conducive to improving the adhesion between the apocynum fiber, the lyocell fiber and the needle cloth, making the apocynum lyocell fiber layer easier to be carded and reducing the hemp falling; water spraying is conducive to reducing the static electricity between the apocynum fiber and the lyocell fiber, reducing the fiber scattering due to static electricity, and is conducive to reducing the hemp falling. The squeezing mechanism 3 is used to squeeze and penetrate the water on the surface of the apocynum lyocell fiber layer, so that the water can fully penetrate into the inside of the apocynum lyocell fiber layer, so that the apocynum fibers can fully contact with the water. After the apocynum lyocell cotton roll is processed by the carding pretreatment device, the moisture content in the apocynum lyocell fiber layer is guaranteed to be 6%-8%.

[0054] like Figure 6 , Figure 7 , Figure 8 As shown. The support mechanism 1 includes a base plate 11, and two support plates 12 are fixedly arranged at one end of the base plate 11 relative to each other, and the support plate 12 is used to support the cotton roll. A rotating seat 15 is arranged on the support plate 12 to rotate through a bearing, and a first hydraulic cylinder 14 is fixedly arranged on one support plate 12 to drive the rotating seat 15 to slide horizontally, and the first hydraulic cylinder 14 is rotatably connected to one end of the rotating seat 15 through a bearing. The first hydraulic cylinder 14 drives the rotating seat 15 to rotate, thereby fixing the cotton roll between the two rotating seats 15. A first motor 13 that drives the rotating seat 15 to rotate is fixedly arranged on the other support plate 12, and the first motor 13 drives the cotton roll to unwind through the rotating seat 15 in accordance with the cotton feeding speed of the cotton carding machine.

[0055] The rotating seat 15 is provided with a clamping structure for clamping the apocynum lyocell cotton roll. The clamping structure includes a plurality of clamping blocks 19, and the clamping blocks 19 correspond to the clamping slots on the apocynum lyocell cotton reel one by one. The clamping blocks 19 are inserted into the clamping slots, thereby limiting the cotton reel and the rotating seat 15, so that the rotating seat 15 drives the cotton reel to rotate synchronously. A slot 16 for inserting the cotton reel is provided at one end of the rotating seat 15 close to the cotton reel, and the diameter of the slot 16 is slightly larger than the diameter of the end of the cotton reel, so that the cotton reel can be inserted into the slot 16. The clamping blocks 19 are evenly distributed in a circular array on the side wall of the slot 16. In this embodiment, four clamping blocks 19 are provided.

[0056] A second mounting slot 110 is provided at the rear of the slot 16. A slide plate 17 is provided in the slot 16, a slide seat 112 is provided in the second mounting slot 110, and the slide plate 17 and the slide seat 112 are fixedly connected via a slide rod 111. A through hole is provided between the slot 16 and the second mounting slot 110 for the slide rod 111 to pass through, and the slide rod 111 is slidably connected to the through hole. A first spring 113 is provided between the slide seat 112 and the second mounting slot 110, and the first spring 113 applies an outward thrust to the slide plate 17 through the slide seat 112 and the slide rod 111.

[0057] The second mounting groove 110 is provided with a limiting groove 116 on the outside, and the limiting groove 116 corresponds to the clamping block 19 one by one. A push plate 117 is slidably provided in the limiting groove 116. The limiting groove 116 is connected to the second mounting groove 110 through the third mounting groove 115, and a transmission plate 114 is rotatably provided in the third mounting groove 115, and the middle part of the transmission plate 114 is rotatably connected to the third mounting groove 115. A torsion spring is provided between the transmission plate 114 and the third mounting groove 115 to make one end of the transmission plate 114 contact with the end surface of the slide seat 112, so as to facilitate the transmission plate 114 to rotate through the slide seat 112. The push plate 117 is provided with a transmission groove 118 for inserting the end of the transmission plate 114, and the transmission plate 114 drives the push plate 117 to slide in the limiting groove 116 through the transmission groove 118.

[0058] A push rod 119 is fixedly arranged on the push plate 117. A through hole 122 is arranged on the block 19, and one end of the through hole 122 close to the slot 16 is an inclined surface gradually inclined outward from the inner surface to the outer surface. A through hole for the push rod 119 to pass through is arranged on the limit plate 120 fixedly arranged in the limit groove 116, and the push rod 119 is slidably connected to the limit plate 120. A second spring 121 is arranged between the limit plate 120 and the push plate 117 to make the end face of the push rod 119 contact the inclined surface of the through hole 122.

[0059] A third spring 123 is provided between the block 19 and the first mounting groove 18 to apply an outward pulling force to the block 19. The block 19 is slidably connected to the first mounting groove 18, and the first mounting groove 18 is provided on the end surface of the rotating seat 15 close to the cotton reel shaft.

[0060] like Figure 5As shown. The water spraying mechanism 2 includes a first support frame 21 fixed on the base. The upper and lower parts of the first support frame 21 are respectively provided with water spraying structures for spraying water on the upper and lower surfaces of the apocynum lyocell fiber layer. The structures of the water spraying structures are the same. The water spraying structure includes a water pipe 22, and the water pipe 22 is connected to an external water source. A plurality of atomizing nozzles are evenly arranged at one end of the water pipe 22 close to the apocynum lyocell fiber layer. A transmission shaft 23 is rotatably arranged at the top of the first support frame 21 through a bearing. The transmission shaft 23 of the lower water spraying structure is rotatably connected to the bottom plate 11 through a bearing. A rotating plate 24 is fixedly arranged at one end of the transmission shaft 23. A transmission rod 25 is slidably arranged on the end of the rotating plate 24 away from the transmission shaft 23, and a sliding sleeve 26 is fixedly arranged at one end of the rotating rod. The sliding sleeve 26 is slidably sleeved on a connecting rod 27. The two ends of the connecting rod 27 are fixedly connected to the water pipe 22 through connecting plates 28. The middle portion of the connecting plate 28 is rotatably connected to a fixing rod 29 fixedly disposed on the first supporting frame 21 .

[0061] A second bevel gear 214 is fixedly provided at the other end of the transmission shaft 23, and the second bevel gear 214 meshes with a first bevel gear 213 fixedly provided at one end of the rotating shaft 211. A support seat 215 is fixedly provided on the first support frame 21 and the bottom plate 11, and the rotating shaft 211 is rotatably connected to the support seat 215 via a bearing. A transmission wheel 212 is fixedly provided at the other end of the rotating shaft 211, and the transmission wheel 212 is connected to a pulley fixedly provided on the output shaft of the first motor 13 via a transmission belt 210.

[0062] The squeezing mechanism 3 includes a second support frame 31, which is fixed on the bottom plate 11. An upper roller 32 and a lower roller 33 are rotatably arranged on the second support frame 31. A motor for driving the lower roller 33 to rotate is arranged on the second support frame 31. An adjustment groove is arranged on the upper part of the second support frame 31, and a mounting seat 34 is slidably arranged in the adjustment groove. Both ends of the upper roller 32 are rotatably connected with the mounting seat 34 through bearings. A second motor 36 for driving the upper roller 32 to rotate is arranged on the mounting seat 34. A second hydraulic cylinder 35 for driving the mounting seat 34 to slide up and down in the adjustment groove is arranged on the top of the second support frame 31. The height of the upper roller 32 is adjusted by the second hydraulic cylinder 35, thereby adjusting the distance between the upper roller 32 and the lower roller 33, so as to facilitate the passage of the apocynum lyocell fiber layer. The apocynum lyocell fiber layer is squeezed by the upper roller 32 and the lower roller 33, so that the water on the surface layer penetrates into the inside, thereby improving the uniformity of the water infiltration of the apocynum lyocell fiber layer.

[0063] When in use, the two ends of the cotton reel are respectively inserted into the slots 16 of the two rotating shafts 211, and the slots on the cotton reel correspond to the blocks 19 one by one. The first hydraulic cylinder 14 pushes a rotating seat 15 to move in the direction of the cotton reel, and the end face of the cotton reel applies a thrust to the slide plate 17, and the slide plate 17 drives the slide seat 112 to slide through the slide rod 111, and the first spring 113 is stretched. The slide seat 112 drives the transmission plate 114 to rotate, and the transmission plate 114 drives the push plate 117 to slide outward along the limit groove 116 through the transmission groove 118, and the second spring 121 is compressed. The push plate 117 drives the push rod 119 to move synchronously, and the push rod 119 pushes the block 19 to move in the direction of the slot 16 through the inclined surface of the perforation 122, and the block 19 is clamped in the slot of the cotton reel, and the first spring 113 is stretched. The two rotating seats 15 press the cotton reel tightly to complete the installation of the cotton reel.

[0064] The first motor 13 is started, and the first motor 13 drives the cotton reel to rotate through the rotating seat 15, so that the apocynum lyocell fiber layer passes between the upper roller 32 and the lower roller 33 and enters the cotton inlet of the carding machine. The first motor 13 drives the transmission wheel 212 to rotate through the pulley and the transmission belt 210, and the transmission wheel 212 drives the first bevel gear 213 to rotate through the rotating shaft 211, and the first bevel gear 213 drives the second bevel gear 214 to drive the transmission shaft 23 to rotate, and the transmission shaft 23 drives the transmission rod 25 to rotate through the rotating plate 24, and the transmission rod 25 drives the connecting rod 27 to move left and right through the sliding sleeve 26, and the sliding sleeve 26 slides along the connecting rod 27, and the connecting rod 27 drives the water pipe 22 to move left and right through the connecting plate 28, so as to spray water on the apocynum lyocell fiber layer and improve the uniformity of the water spray.

[0065] S4. Pre-draw the apocynum lyocell raw sliver, draw the pre-drawn sliver and the combed cotton sliver through TMFD81S, and then draw the pre-drawn sliver through TMFD81L to obtain blended sliver.

[0066] In the pre-drawing process, 6 strips are used for drawing, with a basis weight of 24g / 5m, a roller gauge of 5*15, and a drafting ratio of 1.9 in the back zone. In the first drawing process, 2 combed slivers with a basis weight of 24g / 5m are combined with 3 pre-drawing strips, with a basis weight of 22g / 5m, a total drafting ratio of 5.45, a drafting ratio of 1.9 in the back zone, and a roller gauge of 4*14. In the second drawing process, 7 first drawing strips are used for drawing, the basis weight of the second drawing strip is 20g / 5m, the total drafting ratio is 7.7, the drafting ratio of 1.14 in the back zone, the roller gauge is 4*14, and the speed is 260m / min.

[0067] S5, the blended sliver is pulled and twisted through a FA497 roving frame (60 spindles / unit) to form roving. The roving weight is 4.8g / 10m, the twist coefficient is 110, the speed is 850, the roller gauge is 8×25×29, and the back zone drafting multiple is 1.15;

[0068] S6, the roving is pulled and twisted through a JWF1510AJM spinning frame (216 spindles / unit) to obtain a blended yarn. During the pulling and twisting process, the roving has a humidity of 55-65, a count of 32s, a fineness of 18.3tex, a roller gauge of 18×28, a speed of 10000m / min, a twist coefficient of 380, a wire ring of Blake C1UL 5 / 0 wire ring, a mesh ring of 120 mesh, and a leather roller of WRC965.

[0069] Embodiment 1

[0070] In this embodiment, the blended yarn includes 65wt.% of combed cotton sliver, 20wt.% of lyocell and 15wt.% of apocynum.

[0071] Embodiment 2

[0072] In this embodiment, the blended yarn includes 40 wt.% of combed cotton sliver, 30 wt.% of lyocell and 30 wt.% of apocynum.

[0073] Comparative Example 1

[0074] The blended yarn in this comparative example includes 50wt.% of combed cotton sliver, 20wt.% of long-staple cotton and 30wt.% of apocynum flax.

[0075] Comparative Example 2

[0076] The blended yarn in this comparative example includes 50wt.% of combed cotton sliver, 20wt.% of long-staple cotton and 30wt.% of apocynum (original color).

[0077] Comparative Example 3

[0078] In this comparative example, the blended yarn includes 70 wt.% of combed cotton sliver and 30 wt.% of apocynum ramie.

[0079] Comparative Example 4

[0080] In this comparative example, the blended yarn includes 70 wt.% of combed cotton sliver and 30 wt.% of apocynum (original color).

[0081] In Comparative Examples 1 and 2, long-staple cotton is used to replace lyocell fiber, and Comparative Examples 3 and 4 do not contain lyocell fiber. The above method is used to study the properties of the blended yarns of Example 1, Example 2, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4. The properties are shown in Table 1.

[0082] Table 1 Blended yarn properties

[0083]

[0084] It can be seen from Table 1 that the blended yarn produced by the method described in the present invention improves the strength of the blended yarn while ensuring the content of apocynum venetum, and improves the uniformity and quality of the blended yarn.

[0085] Therefore, the refined cotton apocynum lyocell blended yarn and the spinning method thereof of the present invention are adopted to solve the problems of poor quality and low strength of the existing apocynum linseed and cotton fiber blended yarn.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A refined cotton apocynum lyocell blended yarn, characterized in that: The invention comprises 40wt.%-65wt.% of combed cotton sliver, 20wt.%-30wt.% of lyocell and 15wt.%-30wt.% of apocynum ramie.

2. A refined cotton apocynum lyocell blended yarn according to claim 1, characterized in that: The invention comprises 65wt.% of combed cotton sliver, 20wt.% of lyocell and 15wt.% of apocynum ramie.

3. A refined cotton apocynum lyocell blended yarn according to claim 1, characterized in that: The invention comprises 40wt.% of combed cotton sliver, 30wt.% of lyocell and 30wt.% of apocynum ramie.

4. A refined cotton apocynum lyocell blended yarn according to any one of claims 1 to 3, characterized in that: The combed cotton sliver is fine-staple cotton.

5. The spinning method of a refined cotton apocynum lyocell blended yarn according to claim 4, characterized in that: The following steps are involved: S1, performing a suffocating pretreatment on the apocynum venetum fiber; S2, adding the apocynum fiber and the lyocell fiber into a multi-bin cotton mixer according to the mass ratio, and rolling them from the fine cotton opener to the cotton roll machine to ensure the mixing uniformity of the apocynum fiber and the lyocell fiber; S3, using a carding machine to card the apocynum lyocell cotton roll to obtain apocynum lyocell sliver, the licker-in speed during carding is 735 rpm, the doffer speed is 25 rpm, the cylinder speed is 360 rpm, the sliver basis weight is 24g / 5m, the vehicle speed is 115m / min, the dust removal knife angle is 45°, and the movable cover is 101mm / min; S4, pre-drawing the apocynum lyocell raw sliver, drawing the pre-drawn sliver with the combed cotton sliver, and then drawing the pre-drawn sliver twice to obtain a blended sliver; S5, the blended sliver is pulled and twisted through a roving frame to form roving; the roving weight is 4.8g / 10m, the twist coefficient is 110, the speed is 850, the roller gauge is 8×25×29, and the back zone drafting multiple is 1.15; S6. The roving is drawn and twisted through a spinning frame to obtain a blended yarn; during the drawing and twisting process, the spun yarn has a humidity of 55-65, a count of 32s, a fineness of 18.3tex, a roller gauge of 18×28, a machine speed of 10000m / min, a twist coefficient of 380, a wire ring of Blake C1UL 5 / 0, a mesh ring of 120 mesh, and a leather roller of WRC965.

6. The spinning method of a refined cotton apocynum lyocell blended yarn according to claim 5, characterized in that: In S1, the specific operation of steaming is: using 10% of the mass of the apocynum fiber to spray evenly on the apocynum fiber, steaming the apocynum fiber for more than 24 hours, and maintaining the moisture regain at 13%-15%.

7. The spinning method of a refined cotton apocynum lyocell blended yarn according to claim 5, characterized in that: In S3, a carding pretreatment device for pretreatment of the apocynum lyocell cotton roll is arranged at the cotton inlet of the carding machine, and the carding pretreatment device includes a supporting mechanism, a water spraying mechanism and a squeezing mechanism which are arranged in sequence, the supporting mechanism is used to support the apocynum lyocell cotton roll, the water spraying mechanism is used to spray water on the apocynum lyocell fiber layer, and the squeezing mechanism is used to penetrate water on the surface of the apocynum lyocell fiber layer; the supporting mechanism includes a bottom plate, two supporting plates are arranged opposite to each other at one end of the bottom plate, a rotating seat is rotatably arranged on the supporting plate, and a first hydraulic cylinder which drives the rotating seat to slide horizontally is arranged on one supporting plate, The first hydraulic cylinder is rotatably connected to the rotating seat, and a first motor that drives the rotating seat to rotate is arranged on the other support plate; a clamping structure for clamping the Lophatherum Lyocell cotton roll is arranged on the rotating seat; the extrusion mechanism includes a second support frame, the second support frame is fixed on the bottom plate, an upper roller and a lower roller are rotatably arranged on the second support frame, a motor that drives the lower roller to rotate is arranged on the second support frame, an adjustment groove is arranged on the upper part of the second support frame, a mounting seat is slidably arranged in the adjustment groove, both ends of the upper roller are rotatably connected to the mounting seat, a second motor that drives the upper roller to rotate is arranged on the mounting seat, and a second hydraulic cylinder that drives the mounting seat to slide is arranged on the top of the second support frame.

8. The spinning method of a refined cotton apocynum lyocell blended yarn according to claim 7, characterized in that: The clamping structure includes a plurality of clamping blocks, which correspond to the clamping slots on the ramie lyocell cotton reel one by one. A slot for inserting the cotton reel is provided at one end of the rotating seat close to the cotton reel, and the clamping blocks are evenly distributed in a circular array on the side wall of the slot. A second mounting slot is provided behind the slot, a slide plate is provided in the slot, a sliding seat is provided in the second mounting slot, the slide plate and the sliding seat are connected by a sliding rod, a through hole for the sliding rod to pass through is provided between the slot and the second mounting slot, the sliding rod is slidably connected to the through hole, a first spring is provided between the sliding seat and the second mounting slot, and the first spring applies an outward thrust to the slide plate through the sliding seat and the sliding rod; a limiting slot is provided outside the second mounting slot, a push plate is slidably provided in the limiting slot, and the limiting slot and the second mounting slot are connected by a third mounting slot. A transmission plate is rotatably arranged in the third mounting groove, a torsion spring is arranged between the transmission plate and the third mounting groove so that one end of the transmission plate contacts the end face of the sliding seat, a transmission groove is arranged on the push plate for inserting the end head of the transmission plate, and the transmission plate drives the push plate to slide in the limiting groove through the transmission groove, and a push rod is arranged on the push plate, and a perforation is arranged on the card block, and the end of the perforation close to the slot is an inclined surface gradually inclined outward from the inner surface to the outer surface, and a through hole is arranged on the limit plate arranged in the limiting groove for the push rod to pass through, and a second spring is arranged between the limiting plate and the push plate so that the end face of the push rod contacts the inclined surface of the perforation, and a third spring is arranged between the card block and the first mounting groove to apply outward pulling force to the card block, and the card block is slidably connected to the first mounting groove, and the first mounting groove is arranged on the end face of the rotating seat close to the cotton reel shaft.

9. The spinning method of a refined cotton apocynum lyocell blended yarn according to claim 7, characterized in that: The water spraying mechanism comprises a first support frame fixed on a base, and the upper and lower parts of the first support frame are respectively provided with water spraying structures for spraying water on the upper and lower surfaces of the apocynum lyocell fiber layer; the water spraying structure comprises a water pipe, which is connected to an external water source, and a plurality of atomizing nozzles are evenly arranged on one end of the water pipe close to the apocynum lyocell fiber layer; a transmission shaft is rotatably arranged on the top of the first support frame, a rotating plate is arranged at one end of the transmission shaft, a transmission rod is slidably arranged on the rotating plate, a sliding sleeve is arranged at one end of the rotating rod, and the sliding sleeve is slidably arranged on the connecting rod, and the two ends of the connecting rod are respectively connected to the water pipe through the connecting plate, and the middle part of the connecting plate is rotatably connected to the fixed rod arranged on the first support frame, and a second bevel gear is arranged at the other end of the transmission shaft, and the second bevel gear is meshed with the first bevel gear arranged at one end of the rotating shaft, and the rotating shaft is rotatably connected to the first support frame, and a transmission wheel is arranged at the other end of the rotating shaft, and the transmission wheel is connected to the pulley arranged on the output shaft of the first motor through a transmission belt.

10. The spinning method of a refined cotton apocynum lyocell blended yarn according to claim 5, characterized in that: In the S4, during the pre-drawing process, 6 strips are used for drawing, with a basis weight of 24g / 5m, a roller gauge of 5*15, and a rear zone drafting multiple of 1.9; during the first drawing process, 2 combed cotton strips with a basis weight of 24g / 5m are used for drawing and 3 pre-drawing strips with a basis weight of 22g / 5m, a total drafting multiple of 5.45, a rear zone drafting multiple of 1.9, and a roller gauge of 4*14; during the second drawing process, 7 head drawing strips are used for drawing, the second drawing strip has a basis weight of 20g / 5m, a total drafting multiple of 7.7, a rear zone drafting multiple of 1.14, a roller gauge of 4*14, and a machine speed of 260m / min.

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