Method and device for preparing moisture absorption and sweat releasing knitted fabric based on bio-based fibers

Abstract

The moisture-absorbing and sweat-releasing knitted fabric preparation device comprises a workbench, three sets of drying boxes used for drying moisture-absorbing and sweat-releasing knitted fabric are sequentially installed at the top of the workbench from left to right, and material inlets and outlets for the moisture-absorbing and sweat-releasing knitted fabric to enter and exit are formed in the surfaces of the two sides of the three sets of drying boxes correspondingly; through the arrangement of the three sets of drying boxes, closed-loop circulation of hot air in the three sets of drying boxes is achieved through the hot-air blower, the air supply assembly, the flow guide assembly and the air return assembly, the drying efficiency is improved, and the drying efficiency is improved. Meanwhile, it is ensured that the temperature in each set of drying box is sequentially increased from right to left, the moisture absorption and sweat releasing knitted fabric can be gradually dried, on the premise that the fiber performance is not damaged, moisture is effectively removed, the characteristics of bio-based fibers are reserved to the maximum extent, and it is ensured that the knitted fabric finally has the good moisture absorption and sweat releasing effect.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of moisture absorbing and perspiration wicking knitted fabrics, and in particular to a method and device for preparing moisture absorbing and perspiration wicking knitted fabrics based on bio-based fibers. Background Art

[0002] Knitted fabric is a kind of fabric made of yarn through a knitting machine. It has a loose and dense mesh structure. Compared with other fabrics, it is soft, breathable, and has good elasticity. Knitted fabric can be divided into two types: single-sided knitted fabric and double-sided knitted fabric. According to different weaving methods and uses, knitted fabrics of various styles and performances can be produced.

[0003] At present, a Chinese patent application with the announcement number CN117570681A discloses a knitted fabric drying device, including a drying table, vertical plates are fixedly installed on both sides of the top of the drying table, a conveying roller is rotatably installed between the two vertical plates through a support shaft, the surface of the conveying roller is connected to the knitted fabric body by transmission, a support frame is fixedly installed on the top of the drying table, an electric telescopic rod is fixedly installed at the center of the top of the inner cavity of the support frame, a connecting plate is fixedly installed at the output end of the electric telescopic rod, and an exhaust hood is fixedly installed at the bottom of the connecting plate. The invention adopts a lifting design for the exhaust hood, and the exhaust height of the exhaust hood can be adjusted according to the drying needs of the knitted fabric, and can also be adjusted in time according to the different thicknesses of knitted fabrics. In addition, the hot air discharged by the exhaust hood is evenly blown to the surface of the knitted fabric, and the front and rear exhaust hoods are symmetrically arranged to increase the exhaust area, and there will be no residue after drying, thereby improving the drying efficiency of the knitted fabric.

[0004] The above-mentioned knitted fabric drying device has some problems in use. When drying bio-based fiber knitted fabric, due to the thermal sensitivity of bio-based materials, when the temperature is high, it may cause heat loss in the knitted fabric, resulting in a decrease in the strength of the knitted fabric. When the temperature is low, the drying time of the knitted fabric will inevitably increase. Summary of the invention

[0005] The object of the present invention is to provide a method and device for preparing a moisture-absorbing and perspiration-wicking knitted fabric based on bio-based fibers, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for preparing moisture-absorbing and perspiration-wicking knitted fabric based on bio-based fibers comprises a workbench, on the top of which three groups of drying boxes for drying moisture-absorbing and perspiration-wicking knitted fabric are sequentially installed from left to right, both side surfaces of the three groups of drying boxes are provided with material inlets and outlets for moisture-absorbing and perspiration-wicking knitted fabric to enter and exit, the bottoms of the three groups of drying boxes are provided with connecting holes, and the bottom openings of each group of connecting holes are connected with a guide hood; a hot air blower, the hot air blower is fixedly installed at the right bottom of the workbench, and the output end of the hot air blower is connected with the guide hood opening on the right side through an air supply component; and a guide component , the guide component is used to connect the inner cavities of the two adjacent groups of drying boxes together; the return air component is arranged on the top of the left drying box, and the return air component is used to connect the inner cavity of the drying box on the left with the input end of the hot air blower; the traction component is arranged on the top of the right side of the workbench, and the traction component is used to pull the moisture-absorbing and perspiration-wicking knitted fabric out of the inner cavities of the three groups of drying boxes in sequence; the temperature monitoring component is installed on the front side of the workbench, and the temperature monitoring component is used to monitor the temperatures in the three groups of drying boxes respectively.

[0008] As a preferred technical solution, the air supply assembly includes an air supply pipe connected to the output end of the hot air blower, the other end of the air supply pipe is bent to the left and connected to the opening of the air guide cover on the left side, and the inner cavities of the three groups of air guide covers are all provided with fans for supplying air to the corresponding drying boxes;

[0009] The deflector assembly includes exhaust fans fixedly mounted on the tops of the two groups of drying boxes on the right side, the input end of each group of exhaust fans is respectively connected to the inner cavity of the drying box on the corresponding side, the output end of each group of exhaust fans is respectively connected to a connecting pipe, and the end of each group of connecting pipes respectively extends downward and is connected to the adjacent deflector opening on the left side;

[0010] The return air assembly includes a circular hole opened at the top of the drying box located on the left side, an externally threaded pipe is inserted into the inner cavity of the circular hole, a fixing piece for fixing the externally threaded pipe is arranged on the top of the drying box, the lower end of the externally threaded pipe extends to the inner cavity of the drying box, the end of the externally threaded pipe located inside the drying box is connected with an air suction hood, the lower opening of the air suction hood contacts the surface of the moisture wicking knitted fabric through a rolling connector, the upper end of the externally threaded pipe is connected with a rubber tube, the end of the rubber tube is connected with a delivery pipe, the other end of the delivery pipe is connected with the input end of the hot air blower, and the middle part of the delivery pipe is connected with a dehumidification valve;

[0011] The rolling connection member comprises rollers which are rotatably connected to the left and right sides of the mouth of the air suction hood respectively, and the surface of the rollers is rollingly connected to the surface of the moisture absorption and perspiration knitted fabric;

[0012] A first roller is arranged at the top of the left and right sides of each group of drying boxes, and the top of the first roller contacts the bottom surface of the moisture-absorbing and perspiration-wicking knitted fabric. A second roller for guiding the moisture-absorbing and perspiration-wicking knitted fabric is arranged between two adjacent groups of drying boxes, and the bottom of each group of the second roller is fixedly connected to the top of the workbench.

[0013] As a preferred technical solution, the temperature monitoring component includes temperature sensors installed on the front surface of each group of drying boxes, the signal detection ends of each group of temperature sensors extend into the interior of the drying boxes and are located at the mouth of the air duct so as to monitor the temperature of the air flow blown out of the air duct. A fixing plate is fixedly installed on the front side of the workbench, and a controller and a display screen are respectively installed on the front side of the fixing plate. The signal output ends of each group of temperature sensors are electrically connected to the signal input ends of the controller through wires, and the signal output ends of the controller are electrically connected to the signal input ends of the display screen through wires. The hot air blower and exhaust fan are controlled by the controller.

[0014] As a preferred technical solution, the traction assembly includes two groups of mounting plates fixedly installed on the right end portion of the workbench, support plates are fixedly installed on the right top portions of the two groups of mounting plates, guide rollers are rotatably connected between the top portions of the two groups of support plates, sliding sleeves are provided on the surfaces of the two groups of support plates, support bars are fixedly connected on the opposite sides of the two groups of sliding sleeves, friction rollers are rotatably connected between the top portions of the two groups of support bars, a driving motor is fixedly installed on the surface of one group of the support bars, the output shaft of the driving motor is keyed to one end of the friction roller, and a spacing adjustment assembly for adjusting the upper and lower spacing between the friction roller and the guide roller is provided between the two groups of support plates.

[0015] As a preferred technical solution, the spacing adjustment assembly includes a fixing plate fixedly installed between the lower parts of the two groups of support plates, a connecting strip is fixedly installed on the opposite side surfaces of the two groups of sliding sleeves, a hand-tightening bolt is threadedly connected to the middle part of the fixing plate, and the end of the hand-tightening bolt is threaded upward through the fixing plate and is rotatably connected to the bottom of the connecting strip.

[0016] As a preferred technical solution, the fixing part includes a nut threadedly connected to the surface of the external threaded tube, the bottom of the nut contacts the top surface of the drying box, and the surface of the external threaded tube located inside the drying box is sleeved with a spring, and the two ends of the spring respectively contact the top inner wall of the drying box and the top surface of the air intake hood.

[0017] As a preferred technical solution, guide plates are fixedly connected to the inner walls on both sides of the circular hole, and guide grooves arranged along the height for the guide plates to slide are opened on the two side surfaces of the external threaded tube, and the ends of the two groups of guide plates are respectively slidably connected to the inner cavities of the corresponding side guide grooves.

[0018] As a preferred technical solution, a receiving groove is provided on the top inner wall of each group of the material inlet and outlet, and a baffle is slidably connected up and down to control the opening area of ​​the material inlet and outlet so as to control the speed at which external air enters the drying box. Limiting parts for fixing the corresponding side baffles are provided on the upper parts of both sides of each group of the drying boxes.

[0019] As a preferred technical solution, the limiting member includes limiting holes opened on the upper part of each group of drying boxes, and each group of baffles is fixedly connected with fixing screws at the positions corresponding to the corresponding side limiting holes. Each group of fixing screws passes through the corresponding side limiting holes and extends to the outside of the drying box, and the ends of the fixing screws located on the outside of the drying box are threadedly connected with fixing nuts.

[0020] The present invention also provides a method for preparing a moisture-absorbing and perspiration-releasing knitted fabric based on bio-based fibers, and uses a device for preparing a moisture-absorbing and perspiration-releasing knitted fabric based on bio-based fibers to prepare the moisture-absorbing and perspiration-releasing knitted fabric based on bio-based fibers:

[0021] S1. For polylactic acid fiber, bamboo fiber and seaweed fiber, air flow is used to remove impurities, and then the fibers are washed with deionized water to remove residual impurities and chemicals that may affect subsequent processing;

[0022] S2. Modify the hydrophilicity of polylactic acid fiber by grafting monomers containing hydrophilic groups such as carboxyl and hydroxyl groups onto the surface of polylactic acid fiber. For bamboo fiber and seaweed fiber, surface roughening treatment is adopted. Using plasma treatment technology, tiny concave-convex structures are introduced on the fiber surface to improve perspiration efficiency.

[0023] S3, blending polylactic acid fiber, bamboo fiber and seaweed fiber in a ratio of 3:4:3, and spinning by ring spinning process, during the spinning process, controlling parameters such as roller speed and twist, the roller speed is generally set to 150-200 m / min, and the twist range is 300-400 twists / m;

[0024] S4. Computer knitting machines are used to knit fabrics, and a combination of single-sided plain needles and double-sided ribs is used. The single-sided plain needle structure has good air permeability and can quickly diffuse sweat to the fabric surface. At the same time, the double-sided rib structure increases the elasticity and stability of the knitted fabric. During the knitting process, the movement of the needle is controlled by the electronic needle selection system to achieve alternating knitting of different structures.

[0025] S5. Use an environmentally friendly moisture absorption and perspiration finishing agent, such as an organic silicon finishing agent containing a polyether group, which can form a hydrophilic film on the fiber surface to enhance the moisture absorption and perspiration performance of the fiber, and use a padding method for finishing, with a soaking time of 10-15 minutes, so that the finishing agent is fully adsorbed on the fiber surface, and the padding rate is controlled at 70-80% to ensure that the finishing agent is evenly distributed on the knitted fabric. The knitted fabric is dried at a temperature of 80-100°C for 5-8 minutes, and finally high-temperature stentering is performed at a stentering temperature of 180-200°C for 1-2 minutes to cross-link and solidify the finishing agent on the fiber surface;

[0026] S6, washing the finished knitted fabric with clean water to remove the finishing agent and impurities remaining on the surface;

[0027] S7, turn on the hot air blower to generate hot air, the hot air is output from the hot air blower, and is transported to the right air guide cover through the air supply pipe, and the exhaust fan extracts the hot air from the right and middle boxes to the left air guide cover, and the left drying box returns to the hot air blower through the air suction hood, so that the hot air flows through the right, middle and left drying boxes in turn, forming a closed loop circulation, and in the process of flowing, it will contact the wet knitted fabric, resulting in heat being absorbed for evaporation of moisture. The evaporation of moisture requires the absorption of a large amount of heat, thereby reducing the temperature of the hot air, so that the temperature in each group of drying boxes decreases from right to left in turn, so as to achieve segmented drying of the moisture wicking knitted fabric, and a fan is installed in the air guide cover to force the hot air to vertically penetrate the fabric to improve the drying effect;

[0028] S8, take out the woven moisture wicking knitted fabric, and pass it through each set of drying boxes in turn, and it is between the friction roller and the guide roller. When the driving motor is started, it drives the friction roller to rotate, and the friction roller cooperates with the guide roller to use friction to pull the moisture wicking knitted fabric, so that it passes through the three sets of drying boxes in turn, and the hot air in each drying box gradually dries the knitted fabric.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention provides three groups of drying boxes through the setting of drying boxes, and realizes closed-loop circulation of hot air in the three groups of drying boxes through a hot air blower, an air supply component, a guide component and a return air component, so that the hot air flows through the right, middle and left drying boxes in turn, which can fully and efficiently dry the moisture-absorbing and perspiration-wicking knitted fabric. At the same time, it is ensured that the temperature in each group of drying boxes increases from right to left in turn, and the moisture-absorbing and perspiration-wicking knitted fabric can be gradually dried. Under the premise of not damaging the fiber performance, moisture can be effectively removed, the characteristics of bio-based fibers are retained to the greatest extent, and it is ensured that the knitted fabric finally has a good moisture absorption and perspiration effect.

[0031] 2. The present invention arranges an air supply component, a flow guide component and a return air component. The air supply duct connects the hot air blower and the flow guide cover. Combined with the fan in the flow guide cover, the hot air generated by the hot air blower can be accurately and efficiently sent to each drying box, ensuring that each drying box has a sufficient heat source for drying knitted cloth. At the same time, the flow guide component composed of the exhaust fan and the connecting pipe realizes the circulation of hot air in the inner cavity of adjacent drying boxes, so that the hot air is recycled among multiple drying boxes, thereby improving energy utilization, reducing heat waste, and further reducing drying costs. In addition, the air suction hood cooperates with the external threaded pipe, rubber pipe and conveying pipe, etc., which can not only recycle the hot air in the left drying box to realize hot air circulation, but also the air suction hood rolls in contact with the surface of the knitted cloth through the roller, which can extract moisture from the surface of the knitted cloth while recycling the hot air, thereby improving the drying efficiency.

[0032] 3. The present invention can flexibly control the opening area of ​​the material inlet and outlet according to actual drying needs through the setting of the baffle. When it is necessary to reduce the external cold air entering the drying box to maintain the temperature inside the box stable, the opening area can be reduced. When it is necessary to lower the temperature, the opening area can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of a device for preparing a moisture wicking knitted fabric based on bio-based fibers according to the present invention;

[0034] Figure 2 It is a structural schematic diagram of another perspective of the device for preparing the moisture absorption and perspiration knitted fabric based on bio-based fibers of the present invention;

[0035] Figure 3 It is a schematic cross-sectional view of the drying box of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the baffle of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the air suction hood of the present invention;

[0038] Figure 6 It is a structural schematic diagram of the traction assembly of the present invention;

[0039] Figure 7 It is a schematic structural diagram of the exhaust fan of the present invention.

[0040] In the figure:

[0041] 100, workbench; 101, drying box; 102, hot air blower; 103, receiving slot; 104, fixing nut; 105, fixing screw; 106, limiting hole; 107, first roller; 108, connecting hole; 109, baffle; 110, material inlet and outlet; 111, round hole; 112, guide sheet; 113, second roller;

[0042] 200, delivery pipe; 201, rubber tube; 202, external threaded pipe; 203, nut; 204, spring; 205, air hood; 206, roller; 207, guide groove; 208, dehumidification valve;

[0043] 300, air supply pipe; 301, exhaust fan; 302, connecting pipe; 303, air guide cover; 304, fan;

[0044] 400, display screen; 401, controller; 402, fixing plate; 403, temperature sensor;

[0045] 500, friction roller; 501, driving motor; 502, support bar; 503, guide roller; 504, support plate; 505, hand-tightening bolt; 506, fixing plate; 507, mounting plate; 508, sliding sleeve; 509, connecting strip. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-7The present embodiment provides a device for preparing a moisture-absorbing and perspiration-releasing knitted fabric based on bio-based fibers, comprising a workbench 100, on the top of which three groups of drying boxes 101 for drying moisture-absorbing and perspiration-releasing knitted fabrics are sequentially installed from left to right, and both side surfaces of the three groups of drying boxes 101 are provided with material inlets and outlets 110 for the moisture-absorbing and perspiration-releasing knitted fabrics to enter and exit, and the bottoms of the three groups of drying boxes 101 are provided with connecting holes 108, and the bottom openings of each group of connecting holes 108 are connected with a guide cover 303; a hot air blower 102, the hot air blower 102 is fixedly installed at the right bottom of the workbench 100, and the output end of the hot air blower 102 is connected to the opening of the guide cover 303 on the right through an air supply component; a guide component, the guide component is used to connect the inner cavities of two adjacent groups of drying boxes 101 together; a return air component, the return air component is arranged on the top of the left drying box 101, and the return air component is used to connect the inner cavity of the drying box 101 located on the left with the input end of the hot air blower 102 together ; A traction component, which is arranged at the top right side of the workbench 100, and is used to pull the moisture-absorbing and perspiration-wicking knitted fabric and pass it out of the inner cavity of the three groups of drying boxes 101 in sequence; a temperature monitoring component, which is installed on the front side of the workbench 100, and is used to monitor the temperature in the three groups of drying boxes 101 respectively. Through the arrangement of the drying boxes 101, the three groups of drying boxes 101, and through the hot air blower 102, the air supply component, the guide component and the return air component, a closed-loop circulation of hot air in the three groups of drying boxes 101 is realized, so that the hot air flows through the right, middle and left drying boxes 101 in sequence, which can fully and efficiently dry the moisture-absorbing and perspiration-wicking knitted fabric, and at the same time ensure that the temperature in each group of drying boxes 101 increases from right to left in sequence, which can gradually dry the moisture-absorbing and perspiration-wicking knitted fabric, effectively remove moisture without damaging the fiber performance, retain the characteristics of the bio-based fiber to the greatest extent, and ensure that the knitted fabric finally has a good moisture-absorbing and perspiration-wicking effect.

[0048] Among them, the hot air blower 102 is a well-known technical means, and will not be described in detail here.

[0049] The air supply assembly includes an air supply pipe 300 connected to the output end of the hot air blower 102, the other end of the air supply pipe 300 is bent to the left and connected to the mouth of the air guide cover 303 on the left side, and the inner cavity of the three groups of air guide covers 303 are all provided with fans 304 for supplying air to the corresponding drying boxes 101;

[0050] The air guide assembly includes an exhaust fan 301 fixedly installed on the top of the two groups of drying boxes 101 on the right side. The input end of each group of exhaust fans 301 is connected to the inner cavity of the corresponding drying box 101, and the output end of each group of exhaust fans 301 is connected to a connecting pipe 302. The end of each group of connecting pipe 302 extends downward and is connected to the mouth of the adjacent air guide cover 303 on the left side.

[0051] The return air assembly includes a circular hole 111 opened at the top of the drying box 101 located on the left side, an externally threaded tube 202 is inserted into the inner cavity of the circular hole 111, a fixing piece for fixing the externally threaded tube 202 is arranged on the top of the drying box 101, the lower end of the externally threaded tube 202 extends to the inner cavity of the drying box 101, the end of the externally threaded tube 202 located inside the drying box 101 is connected with an air suction hood 205, the lower mouth of the air suction hood 205 contacts the surface of the moisture wicking knitted fabric through a rolling connector, the upper end of the externally threaded tube 202 is connected with a rubber tube 201, the end of the rubber tube 201 is connected with a delivery tube 200, the other end of the delivery tube 200 is connected with the input end of the hot air blower 102, and the middle part of the delivery tube 200 is connected with a dehumidification valve 208;

[0052] The rolling connection member includes rollers 206 which are respectively rotatably connected to the left and right sides of the mouth of the air suction cover 205, and the surface of the rollers 206 is rollingly connected to the surface of the moisture absorption and perspiration knitted fabric;

[0053] First rollers 107 are provided at the top of the left and right sides of each group of drying boxes 101. The top of the first rollers 107 contacts the bottom surface of the moisture-absorbing and perspiration-wicking knitted fabric. Second rollers 113 for guiding the moisture-absorbing and perspiration-wicking knitted fabric are provided between two adjacent groups of drying boxes 101. The bottom of each group of second rollers 113 is fixedly connected to the top of the workbench 100. Through the arrangement of the air supply component, the guide component and the return air component, the air supply duct 300 connects the hot air blower 102 and the guide cover 303. Combined with the fan 304 in the guide cover 303, the hot air generated by the hot air blower 102 can be accurately and efficiently sent to each drying box 101, ensuring that each drying box 101 is dry. There is a sufficient heat source for drying knitted fabrics. At the same time, the guide assembly composed of the exhaust fan 301 and the connecting pipe 302 realizes the circulation of hot air in the inner cavity of adjacent drying boxes 101, so that the hot air is recycled among multiple drying boxes 101, thereby improving energy utilization, reducing heat waste, and further reducing drying costs. In addition, the suction hood 205 cooperates with the external threaded pipe 202, the rubber pipe 201 and the conveying pipe 200, etc., not only can the hot air in the left drying box 101 be recovered to realize hot air circulation, but the suction hood 205 can roll with the surface of the knitted fabric through the roller 206, and can extract moisture from the surface of the knitted fabric while recovering the hot air, thereby improving the drying efficiency.

[0054] The air volume of the exhaust fan decreases from right to left, and the air volume of the right exhaust fan is 800m 3 / h, the middle box is 600m 3 / h, and the air supply speed of the fan in the air guide cover is 1.5-2.5m / s to maintain the temperature gradient between adjacent drying boxes.

[0055] The temperature monitoring component includes a temperature sensor 403 installed on the front surface of each group of drying boxes 101. The signal detection end of each group of temperature sensors 403 extends to the inside of the drying box 101 and is located at the mouth of the air guide cover 303 so as to monitor the temperature of the air flow blown out of the air guide cover 303. A fixing plate 402 is fixedly installed on the front side of the workbench 100. A controller 401 and a display screen 400 are respectively installed on the front side of the fixing plate 402. The signal output end of each group of temperature sensors 403 is electrically connected to the signal input end of the controller 401 through a wire, and the signal output end of the controller 401 is electrically connected to the The signal input end of the display screen 400, the hot air blower 102 and the exhaust fan 301 are controlled by the controller 401. Through the setting of the control component, the temperature sensor 403 monitors the temperature of the air flow blown out of the air guide cover 303 in real time, and can promptly reflect the temperature of the hot air directly acting on the knitted fabric in the drying box 101. The controller 401 processes the sensor signal and transmits the temperature data to the display screen 400, which is convenient for the operator to obtain the temperature information intuitively and accurately, so as to timely adjust the drying parameters, such as the power of the hot air blower 102, the speed of the exhaust fan 301, etc., to ensure that the drying process is carried out at an appropriate temperature and improve the stability and consistency of the drying quality.

[0056] Among them, the traction assembly includes two groups of mounting plates 507 fixedly installed on the right end of the workbench 100, support plates 504 are fixedly installed on the right top of the two groups of mounting plates 507, and a guide roller 503 is rotatably connected between the tops of the two groups of support plates 504. The surface sliding sleeves of the two groups of support plates 504 are provided with sliding sleeves 508, and the opposite sides of the two groups of sliding sleeves 508 are fixedly connected with support bars 502, and a friction roller 500 is rotatably connected between the tops of the two groups of support bars 502. A driving motor 501 is fixedly installed on the surface of one group of support bars 502, and the output shaft of the driving motor 501 is keyed to one end of the friction roller 500. A spacing adjustment assembly for adjusting the upper and lower spacing between the friction roller 500 and the guide roller 503 is arranged between the two groups of support plates 504. Through the setting of the traction assembly, the driving motor 501 drives the friction roller 500 to rotate, and cooperates with the guide roller 503 to generate friction to pull the knitted fabric.

[0057] The model of the controller may be but is not limited to TMS320F2812, and the model of the temperature sensor may be but is not limited to pt100.

[0058] Among them, the spacing adjustment component includes a fixed plate 506 fixedly installed between the lower parts of the two groups of support plates 504, a connecting strip 509 is fixedly installed on the surface of the opposite side of the two groups of sliding sleeves 508, and a hand-tightening bolt 505 is threadedly connected to the middle part of the fixed plate 506. The end of the hand-tightening bolt 505 is threaded upward and penetrates the fixed plate 506 and is rotatably connected to the bottom of the connecting strip 509. Through the setting of the spacing adjustment component, the operator can easily and accurately adjust the position of the sliding sleeve 508, thereby changing the spacing between the friction roller 500 and the guide roller 503.

[0059] Among them, the fixing part includes a nut 203 threadedly connected to the surface of the external threaded tube 202, the bottom of the nut 203 contacts the top surface of the drying box 101, and the surface of the external threaded tube 202 located inside the drying box 101 is sleeved with a spring 204, and the two ends of the spring 204 respectively contact the top inner wall of the drying box 101 and the top surface of the air hood 205. Through the setting of the fixing part, the nut 203 is used to fix the external threaded tube 202 to prevent it from shaking or shifting on the top of the drying box 101. At the same time, the setting of the spring 204 makes the air hood 205 have a certain elastic buffer when contacting the knitted cloth, which can not only ensure that the air hood 205 is closely attached to the surface of the knitted cloth to extract moisture, but also avoid damage to the knitted cloth due to excessive pressure. At the same time, it can also adaptively adjust when the thickness of the knitted cloth changes to a certain extent to ensure the moisture extraction effect.

[0060] Among them, the inner walls on both sides of the circular hole 111 are fixedly connected with guide plates 112, and the surfaces on both sides of the external threaded tube 202 are provided with guide grooves 207 which are set along the height and for the guide plates 112 to slide. The ends of the two groups of guide plates 112 are respectively slidably connected to the inner cavities of the corresponding side guide grooves 207. Through the setting of the guide plates 112 and the guide grooves 207, the external threaded tube 202 is guided and limited, ensuring that the external threaded tube 202 will not rotate or deflect during installation and use, thereby ensuring the stable position of the suction hood 205.

[0061] Among them, the top inner wall of each group of material inlet and outlet 110 is provided with a receiving groove 103, and the inner cavity of the receiving groove 103 is slidably connected up and down with a baffle 109 for controlling the opening area of ​​the material inlet and outlet 110 to control the speed of external air entering the drying box 101. The upper parts of both sides of each group of drying boxes 101 are provided with limiting parts for fixing the corresponding side baffles 109. Through the setting of the baffle 109, the opening area of ​​the material inlet and outlet 110 can be flexibly controlled according to actual drying needs. When it is necessary to reduce the external cold air entering the drying box 101 to maintain the temperature inside the box stable, the opening area can be reduced. When it is necessary to lower the temperature, the opening area can be increased.

[0062] Among them, the limiting parts include limiting holes 106 opened on the upper part of each group of drying boxes 101, and each group of baffles 109 is fixedly connected with a fixing screw 105 at the position corresponding to the corresponding side limiting hole 106. Each group of fixing screws 105 passes through the corresponding side limiting holes 106 and extends to the outside of the drying box 101. The ends of the fixing screws 105 located on the outside of the drying box 101 are threadedly connected with fixing nuts 104. Through the setting of the limiting parts, the baffle 109 can be firmly fixed in the required position, the operation is simple, and it can withstand a certain external force, so as to prevent the baffle 109 from being displaced due to factors such as air flow impact during the drying process, thereby ensuring the stability of the opening area of ​​the material inlet and outlet 110 and ensuring that the thermal environment in the drying box 101 is stable and controllable during the drying process.

[0063] The present invention also provides a method for preparing a moisture-absorbing and perspiration-wicking knitted fabric based on bio-based fibers, and uses a moisture-absorbing and perspiration-wicking knitted fabric preparation device based on bio-based fibers to prepare the moisture-absorbing and perspiration-wicking knitted fabric based on bio-based fibers:

[0064] S1. For polylactic acid fiber, bamboo fiber and seaweed fiber, air flow is used to remove impurities, and then the fibers are washed with deionized water to remove residual impurities and chemicals that may affect subsequent processing;

[0065] S2. Modify the hydrophilicity of polylactic acid fiber by grafting monomers containing hydrophilic groups such as carboxyl and hydroxyl groups onto the surface of polylactic acid fiber. For bamboo fiber and seaweed fiber, surface roughening treatment is adopted. Using plasma treatment technology, tiny concave-convex structures are introduced on the fiber surface to improve perspiration efficiency.

[0066] S3, blending polylactic acid fiber, bamboo fiber and seaweed fiber in a ratio of 3:4:3, and spinning by ring spinning process, during the spinning process, controlling parameters such as roller speed and twist, the roller speed is generally set to 150-200 m / min, and the twist range is 300-400 twists / m;

[0067] S4. Computer knitting machines are used to knit fabrics, and a combination of single-sided plain needles and double-sided ribs is used. The single-sided plain needle structure has good air permeability and can quickly diffuse sweat to the fabric surface. At the same time, the double-sided rib structure increases the elasticity and stability of the knitted fabric. During the knitting process, the movement of the needle is controlled by the electronic needle selection system to achieve alternating knitting of different structures.

[0068] S5. Use an environmentally friendly moisture absorption and perspiration finishing agent, such as an organic silicon finishing agent containing a polyether group, which can form a hydrophilic film on the fiber surface to enhance the moisture absorption and perspiration performance of the fiber, and use a padding method for finishing, with a soaking time of 10-15 minutes, so that the finishing agent is fully adsorbed on the fiber surface, and the padding rate is controlled at 70-80% to ensure that the finishing agent is evenly distributed on the knitted fabric. The knitted fabric is dried at a temperature of 80-100°C for 5-8 minutes, and finally high-temperature stentering is performed at a stentering temperature of 180-200°C for 1-2 minutes to cross-link and solidify the finishing agent on the fiber surface;

[0069] S6, washing the finished knitted fabric with clean water to remove the finishing agent and impurities remaining on the surface;

[0070] S7, turn on the hot air blower 102 to generate hot air, the hot air is output from the hot air blower 102, and is transported to the right air guide hood 303 through the air supply pipe 300, and the exhaust fan 301 extracts the hot air from the right and middle boxes to the left air guide hood 303, and the left drying box 101 returns to the hot air blower 102 through the air suction hood 205, so that the hot air flows through the right, middle and left drying boxes 101 in turn, forming a closed loop circulation, and in the process of flowing, it will contact the wet knitted fabric, resulting in heat being absorbed for evaporation of water. The evaporation of water requires the absorption of a large amount of heat, thereby reducing the temperature of the hot air, so that the temperature in each group of drying boxes 101 decreases from right to left, thereby realizing segmented drying of the moisture wicking knitted fabric, and a fan 304 is installed in the air guide hood 303 to force the hot air to vertically penetrate the fabric to improve the drying effect;

[0071] S8, take out the woven moisture wicking knitted fabric, and pass it through each group of drying boxes 101 in turn, and be between the friction roller 500 and the guide roller 503. When the driving motor 501 is started, the friction roller 500 is driven to rotate, and the friction roller 500 cooperates with the guide roller 503 to use friction to pull the moisture wicking knitted fabric, so that it passes through the three groups of drying boxes 101 in turn, and the hot air in each drying box 101 gradually dries the knitted fabric.

[0072] A device for preparing moisture wicking knitted fabric based on bio-based fibers has a specific working principle for preparing moisture wicking knitted fabric based on bio-based fibers;

[0073] First, the hot air blower 102 is turned on to generate hot air. The hot air is output from the hot air blower 102 and transported to the right air guide hood 303 through the air supply pipe 300. The exhaust fan 301 extracts the hot air from the right and middle boxes to the left air guide hood 303. The left drying box 101 returns to the hot air blower 102 through the air suction hood 205, so that the hot air flows through the right, middle and left drying boxes 101 in turn to form a closed loop. In the process of flowing, it will contact the wet knitted fabric, resulting in heat being absorbed for evaporation of water. The evaporation of water requires the absorption of a large amount of heat, thereby reducing the temperature of the hot air. Therefore, the temperature in each group of drying boxes 101 decreases from right to left in turn, thereby realizing segmented drying of the moisture-absorbing and perspiration-wicking knitted fabric. A fan 304 is installed in the air guide hood 303 to force the hot air to vertically penetrate the fabric to improve the drying effect.

[0074] At this time, the woven moisture-absorbing and perspiration-releasing knitted fabric is taken out and passes through each set of drying boxes 101 in turn, and is between the friction roller 500 and the guide roller 503. When the driving motor 501 is started, the friction roller 500 is driven to rotate, and the friction roller 500 cooperates with the guide roller 503 to pull the moisture-absorbing and perspiration-releasing knitted fabric by friction, so that the knitted fabric passes through the three sets of drying boxes 101 in turn, and the hot air in each drying box 101 gradually dries the knitted fabric.

[0075] At the same time, the signal detection end of the temperature sensor 403 extends to the position inside the drying box 101 near the mouth of the air guide cover 303, and can accurately monitor the temperature of the air flow blown out of the air guide cover 303 in real time. The sensor transmits the temperature signal to the controller 401 installed on the fixing plate 402 on the front side of the workbench 100. After processing the signal, the controller 401 transmits the temperature data to the display screen 400 for intuitive display. The operator can adjust the drying process accordingly according to the temperature data displayed on the display screen 400.

[0076] In addition, the end of the external threaded tube 202 is connected to the air hood 205, which not only collects the hot air in the box, but also draws moisture from the surface of the fabric, and sends the moisture back to the input end of the hot air blower 102 through the external threaded tube 202, the rubber tube 201 and the conveying tube 200. The hot air is heated by the hot air blower 102 again and then circulated for use.

[0077] During the hot air circulation process, when the humidity of the hot air reaches a certain level, the dehumidification valve 208 opens to discharge the moisture in the hot air, effectively reducing the humidity of the circulating hot air, ensuring the drying effect and improving the drying efficiency;

[0078] At the same time, by adjusting the position of the baffle 109 in the receiving groove 103, the opening area of ​​the material inlet and outlet 110 can be controlled, thereby controlling the speed at which external air enters the drying box 101, reducing heat loss, optimizing the drying environment, and improving drying efficiency.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing moisture-absorbing and perspiration-wicking knitted fabric based on bio-based fibers, characterized in that: The invention comprises a workbench (100), wherein three groups of drying boxes (101) for drying moisture-absorbing and perspiration-releasing knitted fabrics are sequentially installed on the top of the workbench (100) from left to right, and material inlets and outlets (110) for the moisture-absorbing and perspiration-releasing knitted fabrics are arranged on both side surfaces of the three groups of drying boxes (101), and the bottoms of the three groups of drying boxes (101) are provided with connecting holes (108), and the bottom opening of each group of connecting holes (108) is connected to a flow guide cover (303); A hot air blower (102), the hot air blower (102) being fixedly mounted on the right bottom of the workbench (100), the output end of the hot air blower (102) being connected to the opening of the air guide cover (303) on the right side through an air supply assembly; A flow guide component, the flow guide component is used to connect the inner cavities of two adjacent groups of drying boxes (101) together; A return air component, the return air component being arranged on the top of the left drying box (101), the return air component being used to connect the inner cavity of the drying box (101) on the left with the input end of the hot air blower (102); A traction assembly, the traction assembly being arranged on the top right side of the workbench (100), and being used for pulling the moisture wicking knitted fabric to pass through the inner cavities of the three groups of drying boxes (101) in sequence; A temperature monitoring component is installed on the front side of the workbench (100), and is used to monitor the temperatures in the three groups of drying boxes (101) respectively.

2. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 1, characterized in that: The air supply assembly comprises an air supply pipe (300) connected to the output end of the hot air blower (102); the other end of the air supply pipe (300) is bent to the left and connected to the mouth of the air guide cover (303) located on the left side; the inner cavities of the three groups of air guide covers (303) are all provided with fans (304) for supplying air to the corresponding drying boxes (101); The air guide assembly comprises an exhaust fan (301) fixedly mounted on the top of the two groups of drying boxes (101) on the right side, the input end of each group of the exhaust fan (301) is respectively connected to the inner cavity of the drying box (101) on the corresponding side, the output end of each group of the exhaust fan (301) is respectively connected to a connecting pipe (302), and the end of each group of the connecting pipe (302) extends downward and is connected to the mouth of the adjacent air guide cover (303) on the left side; The return air assembly comprises a circular hole (111) opened at the top of the drying box (101) located on the left side, an externally threaded pipe (202) is inserted into the inner cavity of the circular hole (111), a fixing piece for fixing the externally threaded pipe (202) is arranged on the top of the drying box (101), the lower end of the externally threaded pipe (202) extends into the inner cavity of the drying box (101), and the end of the externally threaded pipe (202) located inside the drying box (101) is The outer threaded tube (202) is connected to an air suction hood (205), the lower opening of the air suction hood (205) contacts the surface of the moisture wicking knitted fabric through a rolling connection piece, the upper end of the external threaded tube (202) is connected to a rubber tube (201), the end of the rubber tube (201) is connected to a delivery tube (200), the other end of the delivery tube (200) is connected to the input end of the hot air blower (102), and the middle part of the delivery tube (200) is connected to a dehumidification valve (208); The rolling connection member comprises rollers (206) respectively connected to the left and right sides of the mouth of the air suction hood (205) in a rotatable manner, and the surface of the rollers (206) is connected to the surface of the moisture absorption and perspiration knitted fabric in a rolling manner; First rollers (107) are arranged at the top of the left and right sides of each group of drying boxes (101), and the tops of the first rollers (107) contact the bottom surface of the moisture wicking knitted fabric. Second rollers (113) for guiding the moisture wicking knitted fabric are arranged between two adjacent groups of drying boxes (101), and the bottom of each group of the second rollers (113) is fixedly connected to the top of the workbench (100).

3. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 2, characterized in that: The temperature monitoring component comprises a temperature sensor (403) installed on the front surface of each group of drying boxes (101); the signal detection end of each group of the temperature sensors (403) extends into the interior of the drying boxes (101) and is located at the mouth of the air guide cover (303) so as to monitor the temperature of the air flow blown out of the air guide cover (303); a fixing plate (402) is fixedly installed on the front side of the workbench (100); a controller (401) and a display screen (400) are respectively installed on the front side of the fixing plate (402); the signal output end of each group of the temperature sensors (403) is respectively electrically connected to the signal input end of the controller (401) through a wire; the signal output end of the controller (401) is electrically connected to the signal input end of the display screen (400) through a wire; the hot air blower (102) and the exhaust fan (301) are controlled by the controller (401).

4. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 3, characterized in that: The traction assembly comprises two groups of mounting plates (507) fixedly mounted on the right end of the workbench (100), the right tops of the two groups of mounting plates (507) are fixedly mounted with support plates (504), the tops of the two groups of support plates (504) are rotatably connected with a guide roller (503), the surfaces of the two groups of support plates (504) are slidingly sleeved with a sleeve (508), the opposite sides of the two groups of sleeves (508) are fixedly connected with a support bar (502), the tops of the two groups of support bars (502) are rotatably connected with a friction roller (500), the surface of one group of the support bars (502) is fixedly mounted with a drive motor (501), the output shaft of the drive motor (501) is keyed to one end of the friction roller (500), and a spacing adjustment assembly for adjusting the upper and lower spacing between the friction roller (500) and the guide roller (503) is arranged between the two groups of support plates (504).

5. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 4, characterized in that: The spacing adjustment assembly includes a fixing plate (506) fixedly installed between the lower parts of the two groups of support plates (504), a connecting strip (509) fixedly installed on the surface of the opposite side of the two groups of sliding sleeves (508), a hand-tightening bolt (505) threadedly connected to the middle part of the fixing plate (506), and an end of the hand-tightening bolt (505) threadedly penetrates the fixing plate (506) upward and is rotatably connected to the bottom of the connecting strip (509).

6. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 5, characterized in that: The fixing part comprises a nut (203) threadedly connected to the surface of the externally threaded tube (202), the bottom of the nut (203) contacts the top surface of the drying box (101), and a spring (204) is sleeved on the surface of the externally threaded tube (202) inside the drying box (101), and two ends of the spring (204) respectively contact the top inner wall of the drying box (101) and the top surface of the suction hood (205).

7. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 2, characterized in that: Guide plates (112) are fixedly connected to the inner walls on both sides of the circular hole (111), and guide grooves (207) arranged along the height and for the guide plates (112) to slide are opened on the surfaces on both sides of the external threaded tube (202), and the ends of the two groups of guide plates (112) are respectively slidably connected to the inner cavities of the corresponding side guide grooves (207).

8. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 1, characterized in that: The top inner wall of each group of the material inlet and outlet (110) is provided with a receiving groove (103), and the inner cavity of the receiving groove (103) is slidably connected to a baffle (109) for controlling the opening area of ​​the material inlet and outlet (110) so as to control the speed at which external air enters the drying box (101). The upper parts of both sides of each group of the drying box (101) are provided with limiting parts for fixing the corresponding side baffles (109).

9. The device for preparing a moisture wicking knitted fabric based on bio-based fibers according to claim 8, characterized in that: The limiting member comprises a limiting hole (106) opened on the upper part of each group of drying boxes (101); each group of baffles (109) is fixedly connected with a fixing screw (105) at a position corresponding to the corresponding side limiting hole (106); each group of fixing screws (105) respectively penetrates the corresponding side limiting hole (106) and extends to the outside of the drying box (101); and the end of the fixing screw (105) located outside the drying box (101) is threadedly connected with a fixing nut (104).

10. A method for preparing a moisture-absorbing and perspiration-wicking knitted fabric based on bio-based fibers, characterized in that: The moisture wicking knitted fabric based on bio-based fibers is prepared by using the device for preparing the moisture wicking knitted fabric based on bio-based fibers according to any one of claims 1 to 9: S1. For polylactic acid fiber, bamboo fiber and seaweed fiber, air flow is used to remove impurities, and then the fibers are washed with deionized water to remove residual impurities and chemicals that affect subsequent processing; S2. Modify the hydrophilicity of polylactic acid fiber by grafting monomers containing hydrophilic groups onto the surface of polylactic acid fiber. For bamboo fiber and seaweed fiber, surface roughening treatment is adopted. Using plasma treatment technology, tiny concave-convex structures are introduced on the fiber surface to improve perspiration efficiency. S3, blending polylactic acid fiber, bamboo fiber and seaweed fiber in a ratio of 3:4:3, and spinning by ring spinning process, during the spinning process, controlling roller speed and twist parameters, the roller speed is set to 150-200 m / min, and the twist range is 300-400 twists / m; S4. Computer knitting machines are used to weave knitted fabrics, and a combination of single-sided plain needles and double-sided ribs is used. The single-sided plain needle structure has good air permeability and can quickly diffuse sweat to the fabric surface; at the same time, the double-sided rib structure increases the elasticity and stability of the knitted fabric. During the weaving process, the movement of the needle is controlled by the electronic needle selection system to achieve alternating weaving of different structures; S5. Use an environmentally friendly moisture absorption and perspiration finishing agent, such as an organic silicon finishing agent containing a polyether group, which can form a hydrophilic film on the fiber surface to enhance the moisture absorption and perspiration performance of the fiber, and adopt a padding method for finishing, with a soaking time of 10 to 15 minutes, so that the finishing agent is fully adsorbed on the fiber surface, and the padding rate is controlled at 70-80% to ensure that the finishing agent is evenly distributed on the knitted fabric. The knitted fabric is dried at a temperature of 80-100°C for 5 to 8 minutes, and finally high-temperature tentering is performed at a tentering temperature of 180-200°C for 1 to 2 minutes to cross-link and solidify the finishing agent on the fiber surface; S6, washing the finished knitted fabric with clean water to remove the finishing agent and impurities remaining on the surface; S7, turning on the hot air blower (102) to generate hot air, the hot air is output from the hot air blower (102), and is transported to the right air guide cover (303) through the air supply pipe (300), and the exhaust fan (301) extracts the hot air from the right and middle boxes to the left air guide cover (303), and the drying box (101) in the left side returns to the hot air blower (102) through the air suction cover (205), so that the hot air flows through the right, middle and left drying boxes (101) in sequence, forming a closed loop circulation, and in the process of flowing, it will contact the wet knitted fabric, resulting in heat being absorbed for evaporation of moisture. The evaporation of moisture requires the absorption of a large amount of heat, thereby reducing the temperature of the hot air, so that the temperature in each group of drying boxes (101) decreases from right to left, thereby achieving segmented drying of the moisture wicking knitted fabric, and a fan (304) is installed in the air guide cover (303) to force the hot air to vertically penetrate the fabric, thereby improving the drying effect; S8, taking out the knitted moisture wicking knitted fabric, and passing it through each group of drying boxes (101) in turn, and being located between the friction roller (500) and the guide roller (503); when the driving motor (501) is started, the friction roller (500) is driven to rotate, and the friction roller (500) cooperates with the guide roller (503) to pull the moisture wicking knitted fabric by friction, so that the knitted fabric passes through the three groups of drying boxes (101) in turn, and the hot air in each drying box (101) gradually dries the knitted fabric.

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