Compact siro spinning production line for multiple fiber varieties that can recycle waste

Abstract

The present invention discloses a multi-fiber compact siro spinning production line capable of recycling waste materials, comprising a control system, a cotton mixing system, a cotton opener, a cotton feeder, a roll forming machine, a carding machine, a drawing system, a roving frame, a spinning frame, a winding device, a drawing system waste cotton collection system, a roving frame waste cotton collection device, a spinning wind cotton collection device, and a waste drawing and tearing device; the cotton mixing system comprises a mixing disk group, a first plucker, a baler, a second plucker, a multi-bin cotton mixing machine, and a wool combining machine arranged on one side of the baler, which are connected in sequence; the waste drawing and tearing device is respectively connected to the drawing system waste cotton collection system, the roving frame waste cotton collection device, and the spinning wind cotton collection device; and the waste drawing and tearing device is connected to the mixing disks of the mixing disk group. The production line of the present invention can recycle waste cotton, achieve raw material recycling, reduce production costs, reduce differences in various properties, and ultimately produce high-quality yarn.

Description

Technical Field

[0001] The invention relates to the technical field of spinning, in particular to a multi-fiber compact siro spinning production line capable of recycling waste materials. Background Art

[0002] Modal fiber produced by Lenzing is made from natural wood and is naturally biodegradable, making it environmentally friendly. The fiber is soft, smooth, and vibrantly colored, resulting in a particularly smooth and lustrous feel. The fabric drapes beautifully, creating a silk-like sheen and feel. It also boasts high moisture absorption and is comfortable to wear. It is an ideal fabric for intimate apparel and health-conscious clothing, promoting microcirculation and overall health.

[0003] Acrylic fiber is soft, lightweight, and provides excellent warmth retention. However, due to its poor moisture absorption and abrasion resistance, it can cause static electricity and pilling during use, affecting comfort and appearance. Double-resistant acrylic fiber is a modified acrylic fiber with anti-pilling properties. It can be spun pure or in blends. The resulting yarn has better wearability than standard acrylic fiber, making it an ideal fabric for thermal underwear for children and the elderly.

[0004] Silk is a pure natural animal protein fiber. Rich in amino acids and proteins similar to those in human skin, its structure and composition differ from other fibers. It is not only light, soft, tough, shiny, and clean, but also boasts strong moisture absorption, breathability, abrasion resistance, wrinkle resistance, and flame resistance. The fibroin component in its structure, in particular, has excellent beautifying and moisturizing properties for human skin. Products made with silk and its fillings allow the skin to wick away perspiration, keeping it clean and comfortable. Silk fibers possess strong moisture absorption and wicking properties. Silk is rich in various essential amino acids. It has a soft and elastic feel, and after refining and degumming, its surface is smooth, uniform, and elegant. The hydrophilic amino acids in silk possess exceptional moisture-wicking properties (1.5 times that of cotton), making it the only natural fiber that resists moisture changes. Spun silk comes from silkworms and is a natural protein fiber. It has always been a high-end textile raw material. The fiber is fine and soft, smooth, elastic, shiny, and has strong moisture absorption. It is soft and comfortable to wear. At the same time, silk has a complex composition and contains a variety of amino acids that are beneficial to the human body. When it comes into contact with human skin, it can enhance the vitality of human cells, has good skin-friendliness, and is beneficial to health.

[0005] While modal fiber offers excellent breathability and water absorption, and possesses the softness of cotton, the sheen of silk, and the smoothness of linen, it is highly susceptible to deformation. Not only is it more expensive than regular cotton, but it also suffers from poor abrasion resistance. Double-strength acrylic fiber performs similarly to wool, but its elasticity is much greater. Even at a 20% elongation, its rebound rate remains around 65%. Acrylic fabric is a man-made chemical material, and while artificial products generally offer a higher cost-performance ratio, they do have certain disadvantages. For example, acrylic fabric cannot be worn directly against the skin and is not as comfortable as natural materials. Furthermore, while acrylic clothing offers high moldability and greater freedom in creating fashionable designs, it is a short fiber, which is prone to pilling. Consequently, low-quality acrylic fabrics develop small, unsightly pilling over time, resulting in an unsightly appearance. Consequently, many acrylic sweaters now incorporate a portion of wool to prevent pilling. Spun silk also has disadvantages such as shrinkage after washing and dimensional instability. Furthermore, spun silk fibers exhibit high static charge and poor fiber cohesion, making them difficult to form into individual webs or strips. Modal, double-resistance acrylic, and mulberry silk fibers have quite different properties such as dry breaking strength, dry breaking elongation, volume resistivity, and moisture regain, resulting in poor quality of the yarns formed. Therefore, there is a lack of yarns blended from the three raw materials on the market.

[0006] In addition, in the prior art, spinning produces a large amount of waste, which has not been fully automated and recycled, resulting in a large amount of waste. Summary of the Invention

[0007] The purpose of the present invention is to provide a full-process intelligent multi-fiber blended compact siro spinning production line that can recycle waste materials in order to address the shortcomings of the existing technology.

[0008] The technical solutions adopted in the present invention are as follows.

[0009] The multi-fiber compact siro spinning production line that can recycle waste is characterized by: including a control system and a cotton mixing system connected to the control system, a cotton opener, a cotton feeder, a roll forming machine, a cotton carding machine, a drawing system, a roving frame, a spinning frame, a winding device, a drawing system waste cotton collection system, a roving frame waste cotton collection device, a spinning wind cotton collection device, and a waste drawing and tearing device.

[0010] The cotton mixing system includes a mixing disc group, a first cotton grabber, a baler, a second cotton grabber, a multi-bin cotton mixer and a wool combining machine arranged on one side of the baler, which are connected in sequence. The first cotton grabber is connected to the wool combining machine, and the wool combining machine is connected to the second cotton grabber; the cotton mixing disc group includes a plurality of mixing discs in a ring array; when the first cotton grabber grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring of the cotton mixing disc group in turn each time to achieve the purpose of uniform mixing; the material of the mixing disc is grabbed by the first cotton grabber and sent to the baler to form a plurality of first mixed bags, and the materials of each first mixed bag are grabbed by the first cotton grabber and put into the wool combining machine for combining. After the combining is completed, the materials enter the baler again for packaging to form a plurality of second mixed bags, and the materials in each second mixed bag are grabbed by the second cotton grabber and enter the multi-bin cotton mixer to achieve cotton mixing.

[0011] The multi-bin cotton mixing machine, cotton opener, cotton feeder, lap machine, carding machine, drawing system, roving frame, spinning frame and winding device are connected in sequence; the lap roller of the lap machine is equipped with a heating rod; the spinning frame adopts four-roller compact spinning, and the diameter of the small roller is Ф18.9mm.

[0012] The waste cotton collection system of the drawing system is connected to the drawing system, the waste cotton collection device of the roving frame is connected to the roving frame, and the waste cotton collection device of the spinning frame is connected to the spinning frame.

[0013] The waste drawing and tearing device is respectively connected to the waste cotton collecting system of the drawing system, the waste cotton collecting device of the roving frame, and the waste cotton collecting device of the spun yarn; the waste drawing and tearing device is connected to the mixing disc of the mixing disc group.

[0014] The waste drawing frame tearing device is a waste drawing frame that removes the frontmost roller of the four drawing frame rollers.

[0015] As an optimal technical solution, the drawing system includes a first drawing frame, a second drawing frame, and a third drawing frame connected in sequence; the carding machine is connected to the first drawing frame; and the third drawing frame is connected to the roving frame.

[0016] As an optimal technical solution, the waste cotton collection system of the drawing system includes a first drawing frame waste cotton collection device, a second drawing frame waste cotton collection device, and a third drawing frame waste cotton collection device; the first drawing frame waste cotton collection device is connected to the first drawing frame; the second drawing frame waste cotton collection device is connected to the second drawing frame; the third drawing frame waste cotton collection device is connected to the third drawing frame; the first drawing frame waste cotton collection device, the second drawing frame waste cotton collection device, and the third drawing frame waste cotton collection device are respectively connected to the waste drawing tearing device.

[0017] As an optimal technical solution, the roving frame is a BHFA497 roving frame.

[0018] As an optimal technical solution, the spinning frame is a FA506 spinning frame.

[0019] As an optimal technical solution, the winding device is a QPRO-60 automatic winding machine.

[0020] As an optimal technical solution, the carding machine is an A186G carding machine.

[0021] As an optimal technical solution, the multi-bin cotton mixing machine is a FA022-6 multi-bin cotton mixing machine.

[0022] As an optimal technical solution, the first cotton opener is a FA106 type cotton opener.

[0023] As an optimal technical solution, the rolling machine is an A076E rolling machine.

[0024] The beneficial effects of the present invention are as follows.

[0025] The beneficial effects of the present invention are as follows: the waste drawing and tearing device is respectively connected to the waste cotton collection system of the drawing system, the waste cotton collection device of the roving machine, and the spun yarn wind cotton collection device; the waste drawing and tearing device is connected to the mixing disc of the mixing disc group. Therefore, the waste is recovered and the mixing uniformity of the proportion of raw material waste is increased, thereby achieving the recycling of raw materials, reducing production costs, reducing the differences in various properties, and being more conducive to the yarn quality of the final product.

[0026] When blending raw fibers, they are first pan-blended and then bale-blended. After the three blends are complete, the fibers are rolled. The roll-forming rollers of the roll-forming machine are equipped with heating rods to prevent fluffy fibers from sticking to the rolls when there are many fiber varieties. This allows for smooth feeding and unwinding of the rolls during the carding process. Finally, the yarns are slivered, and the three-step drawing process prevents white spots on the fabric.

[0027] The waste drawing and tearing device is a waste drawing frame with the frontmost roller of four drawing rollers removed. The waste cotton collection and tearing are completed automatically, saving labor.

[0028] The diameter of the small roller of the spinning frame is controlled at Ф18.9mm, and the production of differentiated fiber yarns is prone to problems such as uneven drafting.

[0029] The production line of the present invention combines the advantages of compact spinning and siro spinning. The compact siro yarn has the advantages of high single yarn strength, uniform yarn length, compact structure, good wear resistance, less hairiness, smooth yarn, etc. It has both ply yarn style and single yarn properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the multi-fiber blended compact siro spinning production line of the present invention that is intelligent and can recycle waste throughout the entire process.

[0031] Among them: cotton opener-1; cotton feeder-2; lap forming machine-3; carding machine-4; drawing system-5; first drawing frame-51; second drawing frame-52; third drawing frame-53; roving frame-6; spinning frame-7; winding device-8; drawing system waste cotton collection system-9; first drawing frame waste cotton collection device-91; second drawing frame waste cotton collection device-92; third drawing frame waste cotton collection device-93; roving frame waste cotton collection device-10; spinning wind cotton collection device-11; waste drawing and tearing device-12; mixing disk group-13; first plucking machine-14; baling machine-15; wool combining machine-16; second plucking machine-17; multi-bin mixing machine-18. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Example 1. A multi-fiber compact siro spinning production line capable of recycling waste materials, characterized by comprising: a control system and a cotton mixing system connected to the control system, a cotton opener 1, a cotton feeder 2, a roll forming machine 3, a carding machine 4, a drawing system 5, a roving frame 6, a spinning frame 7, a winding device 8, a drawing system waste collection system 9, a roving frame waste collection device 10, a spinning wind cotton collection device 11, and a waste drawing and tearing device 12.

[0034] The cotton mixing system includes a cotton mixing disc group 13, a first cotton plucker 14, a baler 15, a second cotton plucker 17, a multi-bin cotton mixing machine 18 and a wool combining machine 16 arranged on one side of the baler 15, which are connected in sequence. The first cotton plucker 14 is connected to the wool combining machine 16, and the wool combining machine 16 is connected to the second cotton plucker 17; the cotton mixing disc group 13 includes a plurality of mixing discs in a ring array.

[0035] When the first cotton grabber 14 grabs the raw materials, it grabs a layer of raw materials in turn at each mixing disc ring of the mixing disc group 13 each time to achieve the purpose of uniform mixing; the first cotton grabber 14 grabs the materials from the mixing disc and sends them to the baler 15 to form a number of first mixed bags, and the materials (second mixed materials) in each first mixed bag grabbed by the first cotton grabber 14 are put into the blender 16 for blending, and after the blending is completed, they enter the baler 15 again for blending to form a number of second mixed bags, and the second cotton grabber 17 grabs the materials in each second mixed bag (third mixed materials) and sends them to the multi-bin blender 18 to achieve mixing (forming third mixed materials).

[0036] The multi-bin cotton mixing machine 18, the cotton opener 1, the cotton feeding machine 2, the lap machine 3, the carding machine 4, the drawing system 5, the roving frame 6, the spinning frame 7, and the winding device 8 are connected in sequence; the lap roller of the lap machine 3 is provided with a heating rod; the spinning frame 7 adopts four-roller compact spinning, and the diameter of the small roller is Ф18.9mm.

[0037] The waste cotton collection system 9 of the drawing system is connected to the drawing system 5 , the roving frame waste cotton collection device 10 is connected to the roving frame 6 , and the spinning wind cotton collection device 11 is connected to the spinning frame 7 .

[0038] The waste drawing and tearing device 12 is respectively connected to the drawing system waste cotton collection system 9, the roving frame waste cotton collection device 10, and the spun yarn wind cotton collection device 11; the waste drawing and tearing device 12 is connected to the mixing disc of the mixing disc group 13.

[0039] The waste drawing frame tearing device 12 is a waste drawing frame with the frontmost roller of the four drawing frame rollers removed.

[0040] The drawing system 5 includes a first drawing frame 51 , a second drawing frame 52 , and a third drawing frame 53 which are connected in sequence; the carding machine 4 is connected to the first drawing frame 51 ; and the third drawing frame 53 is connected to the roving frame 6 .

[0041] The waste cotton collecting system 9 of the drawing system includes a first drawing frame waste cotton collecting device 91, a second drawing frame waste cotton collecting device 92, and a third drawing frame waste cotton collecting device 93; the first drawing frame waste cotton collecting device 91 is connected to the first drawing frame 51; the second drawing frame waste cotton collecting device 92 is connected to the second drawing frame 52; the third drawing frame waste cotton collecting device 93 is connected to the third drawing frame 53; the first drawing frame waste cotton collecting device 91, the second drawing frame waste cotton collecting device 92, and the third drawing frame waste cotton collecting device 93 are respectively connected to the waste drawing and tearing device 12.

[0042] The roving frame 6 is a BHFA497 type roving frame 6.

[0043] The spinning frame 7 is a FA506 type spinning frame 7.

[0044] The winding device 8 is a QPRO-60 automatic winding machine.

[0045] The carding machine 4 is an A186G carding machine 4.

[0046] The multi-bin cotton mixing machine 18 is a FA022-6 type multi-bin cotton mixing machine 18.

[0047] The first cotton opener 1 is a FA106 type cotton opener 1.

[0048] The rolling machine 3 is an A076E rolling machine 3.

[0049] The spinning process of this production line adopts the siro compact spinning process. The blended yarn produced includes 30% Lenzing Modal, 58% double-resistance acrylic fiber, and the rest is A1 special ball mulberry silk fiber according to the weight ratio; the blended yarn number is 11.8tex.

[0050] The specific steps are as follows.

[0051] Step 1: Raw material preparation step in the production process

[0052] Before the cotton is opened and cleaned, the three raw materials of modal fiber, double-resistant acrylic fiber and A1 special ball mulberry silk fiber are packed, the packing tapes are cut off in the loosening room, and they are placed for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; the temperature in the workshop is controlled at 28℃-32℃, and the temperature in the workshop is controlled at 58%-62%.

[0053] The modal fiber raw material was wetted to make its moisture regain reach 12.41%.

[0054] A1 special ball mulberry silk fiber is treated with antistatic agent for wet curing.

[0055] Step 2: Opening and cleaning steps in the production process:

[0056] A plurality of mixing disc groups 13 in a shaped array are set up to divide modal fiber, A1 special ball mulberry silk fiber, and double-resistant acrylic fiber into several portions and arrange them into several rows to form several rows. A mixing disc is placed in each row, and the raw materials are grabbed by the first cotton grabber 14 and put into the baler 15 for packaging to obtain several mixed material bags. When the first cotton grabber grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0057] Each mixed material bag is placed on the cotton mixing disc, and the raw materials are grabbed by the first cotton grabbing machine 14 again and placed into the wool combining machine 16. After the wool is combined, it is sent to the baler for packaging to obtain a second mixed material bag. When the first cotton grabbing machine 14 grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0058] The materials in each of the two mixed material bags are grabbed by the second cotton grabber 17 and sent to the multi-bin cotton mixer 18 for opening and mixing in the multi-bin cotton mixer. The cotton opener 1 is used for opening, combing and removing impurities. The cotton layer is evenly conveyed by the cotton feeder 2 and evenly mixed into rolls by the roll forming machine 3 to obtain cotton rolls. The double-resistant acrylic fiber raw material is relatively fluffy. In order to prevent sticking and facilitate the feeding and unwinding of cotton rolls in the carding process, coarse yarn of the same variety is used for isolation when rolling. At the same time, the roll forming roller is heated by a heating rod to increase the density of the cotton roll and make it well-shaped.

[0059] The quality indicators of cotton rolls are: cotton roll length 27m, cotton roll wet weight 403 / m, elongation 1.44%, and meter weight unevenness 0.9%.

[0060] Step 3: Carding process steps in the production process:

[0061] The cotton rolls were placed in the carding machine 4 for carding to obtain mixed sliver. A slightly higher cylinder speed can reduce the needle surface load and enhance carding, and its speed was set to 330 r / min. The licker-in speed was appropriately reduced to facilitate fiber transfer, and the licker-in speed was set to 780 r / min. Since the raw material contained little impurities, the flat plate speed was controlled at 88.4 mm / min. To improve the cotton web quality, the doffer speed was reduced to 22 r / min. To ensure sufficient fiber carding, the five-point spacing between the cylinder and the movable flat plate was set to 0.18 mm*0.16 mm*0.16 mm*0.16 mm*0.18 mm. The sliver weight was 18.8 g / 5 m, the impurities were 4 particles / g, the cotton web grade was level one, and the weight unevenness rate was <3.5%.

[0062] Improve the clarity of the cotton web and the straightness of the fibers, configure appropriate card clothing models, use TPT-52 for the flat card clothing, AD4030×01870 for the doffer card clothing, and AC2030-01740 for the cylinder card clothing; strictly control A1 defects, conduct follow-up tests on the first carding machine one by one, focus on checking the doffer and licker-in parts, and control A1 defects within 100 / 100,000 m; keep the machine clean to prevent fibers from being brought into the cotton web and causing defects; improve the dust filtration effect to reduce the accumulation of short fibers, keep the suction ducts of each part unobstructed and free of fibers to avoid affecting the quality of the cotton web; the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of cotton knots will be generated in the cotton web, seriously endangering the quality of the raw yarn.

[0063] Step 4: Drawing process steps in the production process:

[0064] In order to reduce the unevenness of sliver weight and fully mix the double-resistant acrylic fiber, fine denier Lenzing Modal and mulberry silk fiber, three-way blending is adopted during production; too high speed is prone to static electricity, which will cause entanglement between rollers and leather rollers. The speed can be appropriately reduced, and the anti-entanglement surface treated drawing rubber rollers can be replaced. Local areas of the production machine should be sprayed with humidifiers to maintain a relative humidity of 65%.

[0065] In the first drawing frame 51, 6 raw strips are used to obtain a mixed strip, the mixed strip has a wet basis weight of 18.4g / 5m, a post-draft multiple of 1.86, a roller spacing of 11*10*20mm, and a strip delivery speed of 182m / min.

[0066] The second drawing frame 52 is used for two drawing frames, and the number of the two-drawn and one-drawn mixed strips is 6. The wet basis weight of the two-drawn mixed strips is 16.3g / 5m, the post-drafting multiple is 1.59, the roller spacing is 11*10*20mm, and the strip output speed is 185m / min.

[0067] In the third drawing frame 53, three-drawing is carried out, and the number of three-drawing and two-drawing mixed strips is 6. In order to prevent and control the generation of black stars in the yarn, the process speed of the three-drawing is appropriately reduced, and the strip output speed is 180m / min; the wet basis weight of the three-drawing mixed strip is 16g / 5m, the post-draft multiple is 1.59, and the roller spacing is 11*10*20mm.

[0068] During the drawing process, remove the cotton wax from the yarn channel in time to keep the fibers straight during the drawing process, reduce the phenomenon of fiber hooks, and keep the fibers straight and smooth. Strengthen operation management, do a good job of protection, and do not allow high yarns and hairy yarns to appear. Keep the reserve yarns covered with protective covers to prevent flying flowers from attaching to them and to prevent adhesion with other semi-finished products to cause mixed fibers.

[0069] Step 5: Roving process steps in the production process:

[0070] The three-combined mixed strips enter the roving process to be processed into roving; the roving is carried out in the roving frame 6, and the roving process adopts the process principles of low speed, large gauge, heavy pressure, large twist coefficient and small post-draft; since the spun yarn is a siro compact spinning variety, the roving quantity is designed to the maximum under the premise of meeting the spun yarn drafting requirements;

[0071] The roving process parameters are: post-drafting multiple of 1.18, twist coefficient of 80.1, roller gauge of 27*39mm, and spindle speed of 750r / min.

[0072] Step 6: Spinning process steps in the production process:

[0073] The spinning process is carried out in the spinning frame 7. In the spinning process, two rovings are drafted at the same time and then merged into a siro yarn; the management of the siro compact spinning gathering area is strengthened to keep the two yarns in the gathering area clear and stable; in order to prevent the problems of uneven drafting of slivers, knotty yarns, knot-like soot and large CVB differences between spindles in the spinning process, the control of compact spinning and drafting parts is strengthened to strictly prevent the generation of knotty yarn defects; for four-roller compact spinning, the selection of small roller diameter is very critical, and the small roller diameter is Ф18.9mm, which solves the problem of drafting slivers. The phenomenon of yarn not being smooth; in case of yarn dropping or temporary parking, the negative pressure fan must be turned off, otherwise a large amount of dust will accumulate in the suction groove of the special-shaped tube, and stick to the yarn in the accumulation area, resulting in the whole yarn-shaped soot defect yarn. The longer the parking time, the more obvious the soot defect yarn will be. Use DW-1 spinning spindle position scanner and special yarn tube with chip inside to regularly check the lagging spindles with quality alarms, and conduct quality tracking and rectification in time to eliminate lagging spindles, reduce the CVB quality difference between spindles, and maintain stable and consistent yarn quality.

[0074] The spinning process parameters are: total draft ratio 61, back draft ratio 1.20, twist coefficient 363, roller gauge 20*50mm, front roller speed 145r / min, and gauge block 2.1mm.

[0075] The waste cotton generated in the drawing, roving and spinning processes is collected and combined to form waste strips, which are then torn into broken strips and sent to the cotton mixing disc for recycling.

[0076] Step 7: Winding process steps in the production process:

[0077] Winding is performed in the winding device 8. The winding speed is set at 1100 m / min. Since the electronic yarn clearer intelligently identifies the yarn body and removes yarn defects based on the average value of the base yarn and converts the yarn clearing benchmark into a percentage, the production variety grouping setting shall not be less than 10 spindles per group.

[0078] In the spinning process, strengthen the management of the siro compact spinning gathering area to keep the two yarns in the gathering area clear and stable; check whether the bell mouth is offset, whether the rocking arm pressure is too small, whether the rocking arm screws are loose, whether the negative pressure pipe joint is detached and leaking, whether the suction groove of the special-shaped pipe cover is clogged with flowers, whether the tension hook part is entangled with flowers, whether the mesh ring is damaged, whether the transmission gear has flowers and missing teeth, and other adverse phenomena.

[0079] The electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 is 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, number of PF cycles is 30, and U is 60%.

[0080] The modal fiber has a specification of 1.0 dtex×39 mm, a dry breaking strength of 3.5 cN / dtex, a dry breaking elongation of 14%, and a volume resistivity of 3.3*10 7 Ω·cm, moisture regain 10.52%;

[0081] The double-strength acrylic fiber has a specification of 1.11 dtex×38 mm, is glossy, has a dry breaking strength of 2.79 cN / dtex, a dry breaking elongation of 23%, and a volume resistivity of 1.55*10 6 Ω·cm, moisture regain 1.70%;

[0082] The mulberry silk fiber has a linear density of 1.23 dtex*40 mm, a breaking strength of 4.3×cN / dtex, a breaking elongation of 12.9%, and a volume resistivity of 1.9×10 10 Ω·cm, moisture regain 10.9%.

[0083] The waste cotton generated in the drawing, roving and spinning processes is combined into waste strips by the waste drawing and tearing device 12 and then torn into broken strips.

[0084] The waste drawing frame tearing device is a waste drawing frame that removes the frontmost roller of the four drawing frame rollers.

[0085] The length of the broken strip is 260 mm.

[0086] When using Sandianling to moisturize and cure A1 special ball mulberry silk fiber, 16kg of antistatic agent is required for 1 ton of raw materials. During the treatment, the antistatic agent is mixed with warm water in a volume ratio of 1:4-5, sprayed evenly on the raw materials with a sprayer, and wrapped with plastic cloth and left to stand for more than 24 hours.

[0087] The temperature of the warm water is 30 degrees Celsius.

[0088] The beneficial effects of this embodiment are as follows.

[0089] 1. The price of spun silk fiber is 270,000 yuan per ton. Fine-denier Modal fiber and double-strength acrylic fiber are 20% more expensive than conventional raw materials of the same grade. By blending three fibers with different performance characteristics, the advantages of each fiber are fully utilized, achieving complementary strengths. This process combines the advantages of compact spinning and siro spinning. Compact siro yarns offer high single yarn strength, uniform yarn length, compact structure, good abrasion resistance, low hairiness, and a smooth yarn finish, combining the characteristics of both ply yarns and single yarns. Compact siro spinning significantly improves all performance indicators compared to conventional ring spinning. It also improves weaving efficiency in subsequent processes, reduces yarn sizing, reduces environmental pollution during the desizing process, and eliminates the singeing step. Fabrics produced using compact siro spinning have clear textures, excellent luster, abrasion resistance, and low pilling resistance, unmatched by any other spinning process.

[0090] 2. The yarn has the advantages of warmth retention, anti-pilling and anti-fuzzing of double-resistant acrylic fiber, as well as the softness, smoothness and good moisture absorption of modal fiber, and the skin-friendly and health-care characteristics of mulberry silk fiber. The yarn blending ratio has been optimized, and the compact siro spinning process has been adopted. Many technical difficulties have been overcome in the production process. The yarn has high strength, less hairiness and uniform yarn length. After being woven into the fabric, it feels soft, smooth, light and breathable, has good functionality, is in line with the market development direction, and has broad application prospects.

[0091] 3. Controlling the low single-strength of double-strength acrylic fibers and the low process speeds. Spun silk fibers exhibit high static electricity and poor fiber cohesion, making them difficult to form into webs or slivers independently. These fibers must be treated with Sandianling for moistening and conditioning before being mixed with fine-denier Lenzing Modal in a strict proportion to address the issues of mixed spinning, web formation, and sliver production. When blending the three raw materials, the fibers are first pan-blended and then bale-blended, and then rolled and slivered to prevent white spots on the fabric. To reduce sliver weight unevenness and ensure a thorough blend of double-strength acrylic fibers, fine-denier Lenzing Modal, and spun silk fibers, a three-way blending process is employed during production. Appropriately reducing the speed, replacing anti-entanglement surface-treated draw rollers, spraying humidifiers in selected areas of the production machine, and maintaining relative humidity all address static electricity generation and entanglement with rollers and top rollers during the production process. This addresses issues such as uneven sliver drafting, knotty yarn, knotty soot, and wide variations in CVB between spindles during the spinning process. Based on fiber characteristics, the diameter of the small roller was adjusted from Ø18.4mm to Ø18.9mm for four-roller compact spinning, improving yarn quality. Key spinning equipment, including card clothing, cots, aprons, rings, and travellers, was optimized to enhance the spinnability of differentiated yarns and meet production requirements.

[0092] 4. During the spinning process, acrylic and silk fibers exhibit significant static charge. Separate wet applications are applied to the blend, and spray humidification is applied to specific areas of the production machine to ensure smooth production. Double-anti-static acrylic fiber is relatively fluffy. To prevent sticking and facilitate smooth lap feeding and unwinding during the carding process, rovings of the same type are used as separators during lap formation. Furthermore, heating rods are used to heat the lap rollers, increasing lap density and ensuring optimal formation.

[0093] 5. The waste cotton generated during the drawing, roving, and spinning processes is collected and combined to form waste slivers. The waste slivers are then torn into broken slivers and fed into the mixing disc for recycling. This increases the proportion of waste raw materials and the mixing uniformity, achieving raw material recycling, reducing production costs, minimizing the differences in various properties, and optimizing the molding quality of the final product.

[0094] Example 2. This example differs from Example 1 in that the blended yarn prepared comprises, by weight, 34% Lenzing Modal, 58% double-resistance acrylic fiber, and the remainder A1 special ball mulberry silk fiber; the blended yarn has a yarn count of 11.8 tex.

[0095] The specific steps are as follows.

[0096] Step 1: Raw material preparation step in the production process

[0097] Before the cotton is opened and cleaned, the three raw materials of modal fiber, double-resistant acrylic fiber and A1 special ball mulberry silk fiber are packed, the packing tapes are cut off in the loosening room, and they are placed for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; the temperature in the workshop is controlled at 28℃-32℃, and the temperature in the workshop is controlled at 58%-62%.

[0098] The modal fiber raw material was wetted to make its moisture regain reach 12.41%.

[0099] A1 special ball mulberry silk fiber is treated with antistatic agent for wet curing.

[0100] Step 2: Opening and cleaning steps in the production process:

[0101] A plurality of ring-shaped arrays of mixing disc groups 13 are set up, and the modal fiber, A1 special ball mulberry silk fiber, and double-resistant acrylic fiber are divided into several portions and arranged into several rows to form several rows. A mixing disc is placed in each row, and the raw materials are grabbed by the first cotton grabber 14 and put into the baler 15 for packaging to obtain several mixed material bags. When the first cotton grabber grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0102] Each mixed material bag is placed on the cotton mixing disc, and the raw materials are grabbed by the first cotton grabbing machine 14 again and placed into the wool combining machine 16. After the wool is combined, it is sent to the baler for packaging to obtain a second mixed material bag. When the first cotton grabbing machine 14 grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0103] The materials in each of the two mixed material bags are grabbed by the second cotton grabber 17 and sent to the multi-bin cotton mixer 18 for opening and mixing in the multi-bin cotton mixer. The cotton opener 1 is used for opening, combing and removing impurities. The cotton layer is evenly conveyed by the cotton feeder 2 and evenly mixed into rolls by the roll forming machine 3 to obtain cotton rolls. The double-resistant acrylic fiber raw material is relatively fluffy. In order to prevent sticking and facilitate the feeding and unwinding of cotton rolls in the carding process, coarse yarn of the same variety is used for isolation when rolling. At the same time, the roll forming roller is heated by a heating rod to increase the density of the cotton roll and make it well-shaped.

[0104] The quality indicators of cotton rolls are: cotton roll length 27m, cotton roll wet weight 403 / m, elongation 1.44%, and meter weight unevenness 0.9%.

[0105] Step 3: Carding process steps in the production process:

[0106] The cotton rolls were placed in the carding machine 4 for carding to obtain mixed sliver. A slightly higher cylinder speed can reduce the needle surface load and enhance carding, and its speed was set to 330 r / min. The licker-in speed was appropriately reduced to facilitate fiber transfer, and the licker-in speed was set to 780 r / min. Since the raw material contained little impurities, the flat plate speed was controlled at 88.4 mm / min. To improve the cotton web quality, the doffer speed was reduced to 22 r / min. To ensure sufficient fiber carding, the five-point spacing between the cylinder and the movable flat plate was set to 0.18 mm*0.16 mm*0.16 mm*0.16 mm*0.18 mm. The sliver weight was 18.8 g / 5 m, the impurities were 4 particles / g, the cotton web grade was level one, and the weight unevenness rate was <3.5%.

[0107] Improve the clarity of the cotton web and the straightness of the fibers, configure appropriate card clothing models, use TPT-52 for the flat card clothing, AD4030×01870 for the doffer card clothing, and AC2030-01740 for the cylinder card clothing; strictly control A1 defects, conduct follow-up tests on the first carding machine one by one, focus on checking the doffer and licker-in parts, and control A1 defects within 100 / 100,000 m; keep the machine clean to prevent fibers from being brought into the cotton web and causing defects; improve the dust filtration effect to reduce the accumulation of short fibers, keep the suction ducts of each part unobstructed and free of fibers to avoid affecting the quality of the cotton web; the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of cotton knots will be generated in the cotton web, seriously endangering the quality of the raw yarn.

[0108] Step 4: Drawing process steps in the production process:

[0109] In order to reduce the unevenness of sliver weight and fully mix the double-resistant double-resistant acrylic fiber, fine denier Lenzing Modal and mulberry silk fiber, three-way blending is adopted during production; too high speed is prone to static electricity, entanglement of rollers and leather rollers, the speed can be appropriately reduced, the anti-entanglement surface treated drawing rubber rollers can be replaced, and local areas of the production machine should be sprayed with humidification to maintain the relative humidity at 65%.

[0110] In the first drawing frame 51, 6 raw strips are used to obtain a mixed strip, the mixed strip has a wet basis weight of 18.4g / 5m, a post-draft multiple of 1.86, a roller spacing of 11*10*20mm, and a strip delivery speed of 182m / min.

[0111] The second drawing frame 52 is used for two drawing frames, and the number of the two-drawn and one-drawn mixed strips is 6. The wet basis weight of the two-drawn mixed strips is 16.3g / 5m, the post-drafting multiple is 1.59, the roller spacing is 11*10*20mm, and the strip output speed is 185m / min.

[0112] Three-way drawing is performed in the third drawing frame 53. The number of three-way drawing combined with two-way drawing is 6. In order to prevent and control the generation of white stars in the yarn, the process speed of the three-way drawing is appropriately reduced, and the drawing speed is 180m / min; the wet basis weight of the three-way drawing mixed strip is 16g / 5m, the post-drafting multiple is 1.59, and the roller spacing is 11*10*20mm.

[0113] During the drawing process, remove the cotton wax from the yarn channel in time to keep the fibers straight during the drawing process, reduce the phenomenon of fiber hooks, and keep the fibers straight and smooth. Strengthen operation management, do a good job of protection, and do not allow high yarns and hairy yarns to appear. Keep the reserve yarns covered with protective covers to prevent flying flowers from attaching to them and to prevent adhesion with other semi-finished products to cause mixed fibers.

[0114] Step 5: Roving process steps in the production process:

[0115] The three-combined mixed yarn is processed into roving in the roving process. The roving process adopts the process principles of low speed, large gauge, heavy pressure, large twist coefficient and small post-draft. Since the spun yarn is a siro compact spun variety, the roving quantity is designed to the maximum under the premise of meeting the spun yarn draft requirements.

[0116] The roving process parameters are: post-drafting multiple of 1.18, twist coefficient of 80.1, roller gauge of 27*39mm, and spindle speed of 750r / min.

[0117] Step 6: Spinning process steps in the production process:

[0118] In the spinning process, two coarse yarns are drafted at the same time and then merged into a siro yarn; strengthen the management of the siro compact spinning gathering area to keep the two yarns in the gathering area clear and stable; in order to prevent the problems of uneven drafting of slivers, lumpy yarns, knot-like soot and large CVB differences between spindles in the spinning process, strengthen the control of compact spinning and drafting parts to strictly prevent the generation of lumpy yarn defects; for four-roller compact spinning, the selection of small roller diameter is very critical. The small roller diameter is Ф18.9mm, which solves the problem of drafting slivers. The phenomenon of yarn not being smooth; in case of yarn dropping or temporary parking, the negative pressure fan must be turned off, otherwise a large amount of dust will accumulate in the suction groove of the special-shaped tube, and stick to the yarn in the accumulation area, resulting in the whole yarn-shaped soot defect yarn. The longer the parking time, the more obvious the soot defect yarn will be. Use DW-1 spinning spindle position scanner and special yarn tube with chip inside to regularly check the lagging spindles with quality alarms, and conduct quality tracking and rectification in time to eliminate lagging spindles, reduce the CVB quality difference between spindles, and maintain stable and consistent yarn quality.

[0119] The spinning process parameters are: total draft ratio 61, back draft ratio 1.18, twist coefficient 361, roller gauge 20*50mm, front roller speed 145r / min, and gauge block 2.1mm.

[0120] The waste cotton generated in the drawing, roving and spinning processes is collected and combined to form waste strips, which are then torn into broken strips and sent to the cotton mixing disc for recycling.

[0121] Step 7: Winding process steps in the production process:

[0122] The winding speed is set at 1100m / min; since the electronic yarn clearer intelligently identifies the yarn body and removes yarn defects based on the average value of the base yarn, the yarn clearing benchmark is converted as a percentage, so the production variety grouping setting must not be less than 10 spindles per group.

[0123] When treating A1 special ball mulberry silk fiber with Sandianling, 16-20 kg of antistatic agent is required per ton of raw material. Mix the antistatic agent with warm water in a volume ratio of 1:4-5. Spray the mixture evenly onto the raw material with a sprayer, wrap it in plastic, and let it sit for at least 24 hours. Characteristics of Mulberry Silk: 1. Comfort. Mulberry silk is composed of protein fibers that are biocompatible with the human body and have a pleasant touch. Its coefficient of friction against the human body is one of the lowest among all fiber types, at only 7.4%. 2. Excellent moisture absorption and release. Silk protein fibers are rich in hydrophilic groups such as amino groups. Their porosity allows for easy diffusion of water molecules, allowing them to absorb and release moisture from the air and retain a certain level of moisture. At normal temperatures, this helps the skin retain moisture and prevent overdrying. 3. UV resistance. The tryptophan and tyrosine in silk protein absorb UV rays. 4. Contains 18 amino acids. After undergoing bioprocessing, silk protein fibers can be directly absorbed by the human body upon contact with the skin. Silk is an ecological natural fiber.

[0124] The temperature of the warm water is 45 degrees Celsius.

[0125] Example 3. This example differs from Example 1 in that the blended yarn prepared comprises, by weight, 34% Lenzing Modal, 61% double-resistance acrylic fiber, and the remainder A1 special ball mulberry silk fiber; the blended yarn number is 11.8 tex.

[0126] Step 1: Raw material preparation step in the production process

[0127] Before opening and cleaning, the three raw materials—modal fiber, double-strength acrylic fiber, and A1 special ball mulberry silk fiber—are bundled, the straps removed, and left in a loosening room for at least 24 hours to acclimate to the workshop's temperature and humidity. The workshop temperature is controlled between 28°C and 32°C, and the humidity is between 58% and 62%. The double-strength acrylic fiber is Jilin Chemical's double-strength acrylic fiber.

[0128] The modal fiber raw material was wetted to make its moisture regain reach 12.41%.

[0129] A1 special ball mulberry silk fiber is treated with antistatic agent for wet curing.

[0130] Step 2: Opening and cleaning steps in the production process:

[0131] A plurality of annular arrays of mixing disc groups 13 are set up, and modal fiber, A1 special ball mulberry silk fiber, and double-resistant acrylic fiber are divided into several groups. A mixing disc is placed in each row, and the raw materials are grabbed by the first cotton grabber 14 and put into the baler 15 for packaging to obtain a plurality of mixed material bags. When the first cotton grabber grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0132] Each mixed material bag is placed on the cotton mixing disc, and the raw materials are grabbed by the first cotton grabbing machine 14 again and placed into the wool combining machine 16. After the wool is combined, it is sent to the baler for packaging to obtain a second mixed material bag. When the first cotton grabbing machine 14 grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0133] The second cotton grabber 17 grabs the materials in each of the two mixed material bags and sends them to the multi-bin cotton mixer 18, where they are opened, mixed and impurities removed. The cotton opener 1 opens, combs and removes impurities, the cotton layer is evenly conveyed by the cotton feeder 2, and the cotton is evenly mixed and rolled by the roll forming machine 3, thereby obtaining cotton rolls. The double-resistant acrylic fiber raw material is relatively fluffy. In order to prevent the rolls from sticking and facilitate the smooth unwinding of the cotton rolls in the carding process, the coarse yarn of the same variety is used for isolation when rolling. At the same time, the roll forming rollers are heated by a heating rod to increase the density of the cotton rolls and make them well-shaped.

[0134] The quality indicators of cotton rolls are: cotton roll length 27m, cotton roll wet weight 403 / m, elongation 1.44%, and meter weight unevenness 0.9%.

[0135] Step 3: Carding process steps in the production process:

[0136] The cotton rolls were placed in the carding machine for carding to obtain mixed sliver. A slightly higher cylinder speed can reduce the needle surface load and enhance carding, and its speed was set to 330 r / min. The licker-in speed was appropriately reduced to facilitate fiber transfer, so the licker-in speed was set to 780 r / min. Since the raw material contained little impurities, the cover speed was controlled at 88.4 mm / min. To improve the quality of the cotton web, the doffer speed was reduced to 22 r / min. To ensure sufficient fiber carding, the five-point spacing between the cylinder and the movable cover was set to 0.18 mm*0.16 mm*0.16 mm*0.16 mm*0.18 mm. The sliver weight was 19 g / 5 m, the impurities were 4 particles / g, the cotton web grade was level one, and the weight unevenness rate was <3.5%.

[0137] Improve the clarity of the cotton web and the straightness of the fibers, configure appropriate card clothing models, use TPT-52 for the flat card clothing, AD4030×01870 for the doffer card clothing, and AC2030-01740 for the cylinder card clothing; strictly control A1 defects, conduct follow-up tests on the first carding machine one by one, focus on checking the doffer and licker-in parts, and control A1 defects within 100 / 100,000 m; keep the machine clean to prevent fibers from being brought into the cotton web and causing defects; improve the dust filtration effect to reduce the accumulation of short fibers, keep the suction ducts of each part unobstructed and free of fibers to avoid affecting the quality of the cotton web; the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of cotton knots will be generated in the cotton web, seriously endangering the quality of the raw yarn.

[0138] Step 4: Drawing process steps in the production process:

[0139] In order to reduce the unevenness of sliver weight and fully mix the double-resistant double-resistant acrylic fiber, fine denier Lenzing Modal and mulberry silk fiber, three-way blending is adopted during production; too high speed is prone to static electricity, entanglement of rollers and leather rollers, the speed can be appropriately reduced, the anti-entanglement surface treated drawing rubber rollers can be replaced, and local areas of the production machine should be sprayed with humidification to maintain the relative humidity at 65%.

[0140] Six raw strips are used together to obtain mixed strips, which have a wet basis weight of 18.4g / 5m, a post-drafting multiple of 1.86, a roller spacing of 11*10*20mm, and a strip delivery speed of 182m / min.

[0141] The number of two-in-one mixed slivers is 6, the wet basis weight of the two-in-one mixed sliver is 16.3g / 5m, the post-drafting multiple is 1.59, the roller spacing is 11*10*20mm, and the sliver delivery speed is 185m / min.

[0142] The number of three-way combined two-way mixed slivers is 6. In order to prevent and control the generation of white stars in the yarn, the process speed of the three-way is appropriately reduced, and the sliver output speed is 180m / min; the wet basis weight of the three-way mixed sliver is 16g / 5m, the post-draft multiple is 1.59, and the roller spacing is 11*10*20mm.

[0143] During the drawing process, remove the cotton wax from the yarn channel in time to keep the fibers straight during the drawing process, reduce the phenomenon of fiber hooks, and keep the fibers straight and smooth. Strengthen operation management, do a good job of protection, and do not allow high yarns and hairy yarns to appear. Keep the reserve yarns covered with protective covers to prevent flying flowers from attaching to them and to prevent adhesion with other semi-finished products to cause mixed fibers.

[0144] Step 5: Roving process steps in the production process:

[0145] The three-combined mixed yarn is processed into roving in the roving process. The roving process adopts the process principles of low speed, large gauge, heavy pressure, large twist coefficient and small post-draft. Since the spun yarn is a siro compact spun variety, the roving quantity is designed to the maximum under the premise of meeting the spun yarn draft requirements.

[0146] The roving process parameters are: post-drafting multiple of 1.18, twist coefficient of 80.1, roller gauge of 27*39mm, and spindle speed of 750r / min.

[0147] Step 6: Spinning process steps in the production process:

[0148] In the spinning process, two coarse yarns are drafted at the same time and then merged into a siro yarn; strengthen the management of the siro compact spinning gathering area to keep the two yarns in the gathering area clear and stable; in order to prevent the problems of uneven drafting of slivers, lumpy yarns, knot-like soot and large CVB differences between spindles in the spinning process, strengthen the control of compact spinning and drafting parts to strictly prevent the generation of lumpy yarn defects; for four-roller compact spinning, the selection of small roller diameter is very critical. The small roller diameter is Ф18.9mm, which solves the problem of drafting slivers. The phenomenon of yarn not being smooth; in case of yarn dropping or temporary parking, the negative pressure fan must be turned off, otherwise a large amount of dust will accumulate in the suction groove of the special-shaped tube, and stick to the yarn in the accumulation area, resulting in the whole yarn-shaped soot defect yarn. The longer the parking time, the more obvious the soot defect yarn will be. Use DW-1 spinning spindle position scanner and special yarn tube with chip inside to regularly check the lagging spindles with quality alarms, and conduct quality tracking and rectification in time to eliminate lagging spindles, reduce the CVB quality difference between spindles, and maintain stable and consistent yarn quality.

[0149] The spinning process parameters are: total draft ratio 63, back draft ratio 1.20, twist coefficient 363, roller gauge 20*50mm, front roller speed 1155r / min, and gauge block 2.3mm.

[0150] The waste cotton generated in the drawing, roving and spinning processes is collected and combined to form waste strips, which are then torn into broken strips and sent to the cotton mixing disc for recycling.

[0151] Step 7: Winding process steps in the production process:

[0152] The winding speed is set at 1150m / min; since the electronic yarn clearer intelligently identifies the yarn body and removes yarn defects based on the average value of the base yarn, the yarn clearing benchmark is converted as a percentage, so the production variety grouping setting must not be less than 10 spindles per group.

[0153] The first cotton plucker is an FA002A automatic cotton plucker, and the baler is an SFU110CB vertical automatic baler; the wool combining machine is a BC262 wool combining machine, the second cotton plucker is an FA002A automatic cotton plucker, the multi-bin cotton mixing machine is an FA022-6 multi-bin cotton mixing machine, the cotton opener is an FA106 cotton opener, the cotton feeder is an A092 cotton feeder, the lap machine is an A076E lap machine, the carding machine is an A186G carding machine, the first, second and third drawing frames are completed in a FA302 three-drawing frame respectively, the roving frame is a BHFA497 roving frame; the spinning frame is an FA506 spinning frame; in the winding process, the QPRO60 Murata automatic winder is equipped with an Uster QUANTUM3 electronic yarn clearer.

[0154] Before the spinning process, strengthen the management of the siro compact spinning gathering area to keep the two yarns in the gathering area clear and stable; check whether the bell mouth is offset, whether the rocking arm pressure is too small, whether the rocking arm screws are loose, whether the negative pressure pipe joint is detached and leaking, whether the suction groove of the special-shaped pipe cover is clogged with flowers, whether the tension hook part is entangled with flowers, whether the mesh ring is damaged, whether the transmission gear has flowers and missing teeth, and other undesirable phenomena.

[0155] As an optimal technical solution, the electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 is 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, the number of PF cycles is 30, and U is 60%.

[0156] When using Sandianling to moisturize and maintain A1 special ball mulberry silk fiber, 20kg of antistatic agent is required for 1 ton of raw material. During the treatment, the antistatic agent is mixed with warm water in a volume ratio of 1:5, sprayed evenly on the raw material with a sprayer, and wrapped with plastic cloth and left to stand for more than 24 hours.

[0157] The temperature of the warm water is 40 degrees Celsius.

[0158] Example 4. This example differs from Example 1 in that the blended yarn comprises, by weight, 32% Lenzing Modal, 60% double-strength acrylic fiber, and the remainder A1 special ball mulberry silk fiber; the blended yarn has a yarn count of 11.8 tex. The double-strength acrylic fiber is Qifeng double-strength acrylic fiber.

[0159] The specific steps are as follows.

[0160] Step 1: Raw material preparation step in the production process

[0161] Before the cotton is opened and cleaned, the three raw materials of modal fiber, double-resistant acrylic fiber and A1 special ball mulberry silk fiber are packed, the packing tapes are cut off in the loosening room, and they are placed for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; the temperature in the workshop is controlled at 28℃-32℃, and the temperature in the workshop is controlled at 58%-62%.

[0162] The modal fiber raw material was wetted to make its moisture regain reach 12.41%.

[0163] A1 special ball mulberry silk fiber is treated with antistatic agent for wet curing.

[0164] Step 2: Opening and cleaning steps in the production process:

[0165] A plurality of ring-shaped arrays of mixing disc groups 13 are set up to divide modal fiber, A1 special ball mulberry silk fiber, and double-resistant acrylic fiber into several portions and arrange them into several rows to form several rows. Each portion is placed in a mixing disc, and the raw materials are grabbed by the first cotton grabber 14 and put into the baler 15 for packaging to obtain several mixed material bags. When the first cotton grabber grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0166] Each mixed material bag is placed on the cotton mixing disc, and the raw materials are grabbed by the first cotton grabbing machine 14 again and placed into the wool combining machine 16. After the wool is combined, it is sent to the baler for packaging to obtain a second mixed material bag. When the first cotton grabbing machine 14 grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in turn to achieve the purpose of uniform mixing.

[0167] The materials in each of the two mixed material bags are grabbed by the second cotton grabber 17 and sent to the multi-bin cotton mixer 18 for opening and mixing in the multi-bin cotton mixer. The cotton opener 1 is used for opening, combing and removing impurities. The cotton layer is evenly conveyed by the cotton feeder 2 and evenly mixed into rolls by the roll forming machine 3 to obtain cotton rolls. The double-resistant acrylic fiber raw material is relatively fluffy. In order to prevent sticking and facilitate the feeding and unwinding of cotton rolls in the carding process, coarse yarn of the same variety is used for isolation when rolling. At the same time, the roll forming roller is heated by a heating rod to increase the density of the cotton roll and make it well-shaped.

[0168] The quality indicators of cotton rolls are: cotton roll length 27m, cotton roll wet weight 403 / m, elongation 1.44%, and meter weight unevenness 0.9%.

[0169] Step 3: Carding process steps in the production process:

[0170] The cotton rolls were placed in the carding machine for carding to obtain mixed sliver. A slightly higher cylinder speed can reduce the needle surface load and enhance carding, and its speed was set to 330 r / min. The licker-in speed was appropriately reduced to facilitate fiber transfer, so the licker-in speed was set to 780 r / min. Since the raw material contained little impurities, the cover speed was controlled at 88.4 mm / min. To improve the quality of the cotton web, the doffer speed was reduced to 22 r / min. To ensure sufficient fiber carding, the five-point spacing between the cylinder and the movable cover was set to 0.18 mm*0.16 mm*0.16 mm*0.16 mm*0.18 mm. The sliver weight was 18.8 g / 5 m, the impurities were 4 particles / g, the cotton web grade was level one, and the weight unevenness rate was <3.5%.

[0171] Improve the clarity of the cotton web and the straightness of the fibers, configure appropriate card clothing models, use TPT-52 for the flat card clothing, AD4030×01870 for the doffer card clothing, and AC2030-01740 for the cylinder card clothing; strictly control A1 defects, conduct follow-up tests on the first carding machine one by one, focus on checking the doffer and licker-in parts, and control A1 defects within 100 / 100,000 m; keep the machine clean to prevent fibers from being brought into the cotton web and causing defects; improve the dust filtration effect to reduce the accumulation of short fibers, keep the suction ducts of each part unobstructed and free of fibers to avoid affecting the quality of the cotton web; the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of cotton knots will be generated in the cotton web, seriously endangering the quality of the raw yarn.

[0172] Step 4: Drawing process steps in the production process:

[0173] In order to reduce the unevenness of sliver weight and fully mix the double-resistant double-resistant acrylic fiber, fine denier Lenzing Modal and mulberry silk fiber, three-way blending is adopted during production; too high speed is prone to static electricity, entanglement of rollers and leather rollers, the speed can be appropriately reduced, the anti-entanglement surface treated drawing rubber rollers can be replaced, and local areas of the production machine should be sprayed with humidification to maintain the relative humidity at 65%.

[0174] Six raw strips are used together to obtain mixed strips, which have a wet basis weight of 18.4g / 5m, a post-drafting multiple of 1.86, a roller spacing of 11*10*20mm, and a strip delivery speed of 182m / min.

[0175] The number of two-in-one mixed slivers is 6, the wet basis weight of the two-in-one mixed sliver is 16.3g / 5m, the post-drafting multiple is 1.59, the roller spacing is 11*10*20mm, and the sliver delivery speed is 185m / min.

[0176] The number of three-way combined two-way mixed slivers is 6. In order to prevent and control the generation of black stars in the yarn, the three-way process speed is appropriately reduced, and the sliver output speed is 180m / min; the three-way mixed sliver has a wet basis weight of 16g / 5m, a post-draft multiple of 1.59, and a roller spacing of 11*10*20mm.

[0177] During the drawing process, remove the cotton wax from the yarn channel in time to keep the fibers straight during the drawing process, reduce the phenomenon of fiber hooks, and keep the fibers straight and smooth. Strengthen operation management, do a good job of protection, and do not allow high yarns and hairy yarns to appear. Keep the reserve yarns covered with protective covers to prevent flying flowers from attaching to them and to prevent adhesion with other semi-finished products to cause mixed fibers.

[0178] Step 5: Roving process steps in the production process:

[0179] The three-combined mixed yarn is processed into roving in the roving process. The roving process adopts the process principles of low speed, large gauge, heavy pressure, large twist coefficient and small post-draft. Since the spun yarn is a siro compact spun variety, the roving quantity is designed to the maximum under the premise of meeting the spun yarn draft requirements.

[0180] The roving process parameters are: post-drafting multiple of 1.18, twist coefficient of 80.1, roller gauge of 27*39mm, and spindle speed of 750r / min.

[0181] Step 6: Spinning process steps in the production process:

[0182] In the spinning process, two coarse yarns are drafted at the same time and then merged into a siro yarn; strengthen the management of the siro compact spinning gathering area to keep the two yarns in the gathering area clear and stable; in order to prevent the problems of uneven drafting of slivers, lumpy yarns, knot-like soot and large CVB differences between spindles in the spinning process, strengthen the control of compact spinning and drafting parts to strictly prevent the generation of lumpy yarn defects; for four-roller compact spinning, the selection of small roller diameter is very critical. The small roller diameter is Ф18.9mm, which solves the problem of drafting slivers. The phenomenon of yarn not being smooth; in case of yarn dropping or temporary parking, the negative pressure fan must be turned off, otherwise a large amount of dust will accumulate in the suction groove of the special-shaped tube, and stick to the yarn in the accumulation area, resulting in the whole yarn-shaped soot defect yarn. The longer the parking time, the more obvious the soot defect yarn will be. Use DW-1 spinning spindle position scanner and special yarn tube with chip inside to regularly check the lagging spindles with quality alarms, and conduct quality tracking and rectification in time to eliminate lagging spindles, reduce the CVB quality difference between spindles, and maintain stable and consistent yarn quality.

[0183] The spinning process parameters are: total draft ratio 62, back draft ratio 1.20, twist coefficient 361, roller gauge 20*50mm, front roller speed 145r / min, and gauge block 2.1mm.

[0184] The waste cotton generated in the drawing, roving and spinning processes is collected and combined to form waste strips, which are then torn into broken strips and sent to the cotton mixing disc for recycling.

[0185] Step 7: Winding process steps in the production process:

[0186] The winding speed is set at 1150m / min; since the electronic yarn clearer intelligently identifies the yarn body and removes yarn defects based on the average value of the base yarn, the yarn clearing benchmark is converted as a percentage, so the production variety grouping setting must not be less than 10 spindles per group.

[0187] According to the 2016 technical requirements for superior quality of "Acrylic Viscose Blended Natural Yarn", the measured data are as follows.

[0188] Table 1 Yarn testing results

[0189] Test items Example 1 test results Example 2 test results Example 3 test results Example 4 test results Standard requirements assessment Linear density deviation rate (%) 0 0 0 0 ±2.0 qualified Linear density coefficient of variation (%) 1.1 1.0 1.1 1.2 ≤2.0 qualified Single yarn breaking strength (cN / tex) 15 15.1 15.2 15.3 ≥12.0 qualified Coefficient of variation of single yarn breaking strength (%) 6.0 6.2 6.2 6.3 ≤10.0 qualified Variation coefficient of strip evenness (%) 10.1 10.2 10.2 10.3 ≤13.0 qualified <![CDATA[Kilometer neps (number / 10 3 m)]]> 7 7 6 6 ≤26.0 qualified

[0190] The knitted fabrics made of the above yarns have a smooth surface and a smooth and delicate feel, which overcomes the shortcoming of easy pilling of ordinary acrylic fibers, and the anti-pilling (grade) is 3.5.

[0191] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention and remain within the scope of protection of the present invention.

Claims

1. A multi-fiber compact siro spinning production line that can recycle waste, characterized by: It includes a control system and a cotton mixing system connected to the control system, a cotton opener (1), a cotton feeder (2), a roll forming machine (3), a carding machine (4), a drawing system (5), a roving frame (6), a spinning frame (7), a winding device (8), a drawing system waste cotton collection system (9), a roving frame waste cotton collection device (10), a spinning wind cotton collection device (11), and a waste drawing and tearing device (12); The cotton mixing system comprises a cotton mixing disc group (13), a first cotton plucker (14), a baler (15), a second cotton plucker (17), a multi-bin cotton mixing machine (18), and a wool combining machine (16) arranged on one side of the baler (15), the first cotton plucker (14) being connected to the wool combining machine (16), and the wool combining machine (16) being connected to the second cotton plucker (17); The mixing disc group (13) includes a plurality of mixing discs in an annular array; when the first cotton grabber (14) grabs the raw materials, each time the mixing disc ring of the mixing disc group (13) grabs a layer of raw materials in turn, so as to achieve the purpose of uniform mixing; The materials on the mixing disc are grabbed by the first cotton grabber (14) and sent to the baler (15) to form a plurality of first mixed bags. The materials in each first mixed bag are grabbed by the first cotton grabber (14) and put into the blending machine (16) for blending. After blending, the materials are put into the baler (15) again to form a plurality of second mixed bags. The materials in each second mixed bag are grabbed by the second cotton grabber (17) and sent to the multi-bin blender (18) to achieve blending. A multi-bin cotton mixing machine (18), a cotton opener (1), a cotton feeder (2), a lap machine (3), a carding machine (4), a drawing system (5), a roving machine (6), a spinning machine (7), and a winding device (8) are sequentially connected; a heating rod is provided on the lap roller of the lap machine (3); the spinning machine (7) adopts a four-roller compact spinning method, and the diameter of the small roller is Φ18.9 mm; The drawing system waste cotton collection system (9) is connected to the drawing system (5), the roving frame waste cotton collection device (10) is connected to the roving frame (6), and the spinning wind cotton collection device (11) is connected to the spinning frame (7); The waste drawing and tearing device (12) is respectively connected to the drawing system waste cotton collection system (9), the roving machine waste cotton collection device (10), and the spun yarn wind cotton collection device (11); the waste drawing and tearing device (12) is connected to the mixing disc of the mixing disc group (13); The waste drawing and tearing device (12) is a waste drawing machine with the frontmost roller of the four drawing rollers removed; the waste cotton generated in the drawing, roving and spinning processes is collected by the waste drawing and tearing device (12), combined to form waste strips, and the waste strips are torn to form broken strips, the length of the broken strips being 260 mm; The drawing system (5) includes a first drawing frame (51), a second drawing frame (52), and a third drawing frame (53) connected in sequence; the carding machine (4) is connected to the first drawing frame (51); the third drawing frame (53) is connected to the roving frame (6); The waste cotton collecting system (9) of the drawing system comprises a first drawing frame waste cotton collecting device (91), a second drawing frame waste cotton collecting device (92), and a third drawing frame waste cotton collecting device (93); the first drawing frame waste cotton collecting device (91) is connected to the first drawing frame (51); the second drawing frame waste cotton collecting device (92) is connected to the second drawing frame (52); the third drawing frame waste cotton collecting device (93) is connected to the third drawing frame (53); the first drawing frame waste cotton collecting device (91), the second drawing frame waste cotton collecting device (92), and the third drawing frame waste cotton collecting device (93) are respectively connected to the waste drawing and tearing device (12).

2. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The roving frame (6) is a BHFA497 roving frame.

3. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The spinning frame (7) is a FA506 type spinning frame.

4. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The winding device (8) is a QPRO-60 automatic winding machine.

5. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The carding machine (4) is an A186G carding machine.

6. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The multi-bin cotton mixing machine (18) is a FA022-6 type multi-bin cotton mixing machine.

7. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The cotton opener (1) is a FA106 type cotton opener.

8. The multi-fiber compact siro spinning production line capable of recycling waste materials as claimed in claim 1, characterized in that: The rolling machine (3) is an A076E rolling machine.

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