A spraying structure of a water jet loom suitable for a repellent fabric

Abstract

The application discloses a material spraying structure of a water spraying loom suitable for a down-proof fabric, and relates to the technical field of textile machinery.The material spraying structure comprises a loom thread feeding pipe, a buffer outer cylinder, a liquid supply assembly, an adjusting assembly, a warp thread information acquisition module and a recycling assembly; the loom thread feeding pipe is made of zirconia ceramic material, is provided with a hierarchical channel and an L-shaped communication hole, and has a flat fan-shaped spraying port at the thread outlet end; the liquid supply assembly provides a composite medium containing a functional additive, and realizes constant temperature and pressure supply; the adjusting assembly realizes three-dimensional fine adjustment of the loom thread feeding pipe; the warp thread information acquisition module is linked with a PLC controller to dynamically adjust material spraying parameters; and the recycling assembly realizes efficient recycling and reuse of the medium.The application solves the problems of uneven spraying and insufficient fiber infiltration of the traditional material spraying structure, optimizes the structure and control in cooperation, improves the density and down-proof consistency of the down-proof fabric, simultaneously reduces the cost and environmental protection pressure, and is suitable for high-end down-proof textile production.

Description

Technical Field

[0001] This invention relates to the field of textile equipment technology, and more specifically to a spraying structure for a water-jet loom suitable for down-proof fabrics. Background Technology

[0002] Down-proof fabric, as a core raw material for down jackets, sleeping bags, and other thermal textiles, relies on high-density weaving techniques and extremely small fiber gaps to achieve its down-blocking effect. Traditional water-jet looms face several technical bottlenecks when adapting their spraying structure to down-proof fabrics (such as high-count cotton and polyester microfiber): Firstly, the spraying medium is often just water, which has high surface tension and cannot fully impregnate the microfibers, resulting in insufficient fiber cohesion. After weaving, gaps easily form due to fiber slippage, affecting down-proof performance. Secondly, the spraying volume and angle are fixed, making it impossible to adjust in real-time according to dynamic weaving parameters such as warp density and weft feed speed, leading to uneven spraying across the fabric width and causing localized density fluctuations. Therefore, this invention proposes a novel spraying structure suitable for down-proof fabric weaving. Summary of the Invention

[0003] The purpose of this invention is to provide a material spraying structure for a water-jet loom suitable for down-proof fabrics, so as to solve the problem of poor material feeding effect in existing systems.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] A material spraying structure for a water-jet loom suitable for down-proof fabrics includes a weaving thread feed tube, a liquid supply component, an adjustment component, a multi-dimensional sensing module, a PLC+AI controller, and a recycling component. These components work together to achieve precise material spraying and intelligent operation.

[0006] Fabric feed tube: As the core actuator for spraying material, it is used to feed warp yarns horizontally and vertically towards the weft yarn group. It is made of zirconia ceramic, which is high in hardness and wear-resistant, preventing nozzle deformation due to prolonged spraying. The fabric feed tube has a first channel and a second channel inside. The second channel is closer to the yarn inlet, and the first channel is closer to the yarn outlet, with the diameter of the first channel being larger than that of the second channel. The end of the second channel has an arc-shaped guide surface to reduce wear on the yarn. The yarn outlet of the fabric feed tube is a flat, fan-shaped spray nozzle, 2-3 mm wide and 0.1-0.2 mm thick, forming a uniform "water film" that covers the area where the weft and warp yarns interweave.

[0007] Buffer and connecting structure: A buffer outer cylinder is sleeved on the outside of the fabric feeding tube where the second channel is located, and a buffer channel is formed between the buffer outer cylinder and the fabric feeding tube; multiple L-shaped connecting holes are opened on the fabric feeding tube, which connect the first channel and the buffer channel, and the water outlet faces the outlet position of the first channel, ensuring that the liquid is collected in the first channel and sent out synchronously with the warp threads, thereby improving the overall wetting.

[0008] Liquid supply assembly: Used to provide a stable, temperature- and pressure-controlled injection medium to the buffer channel, including a feed pump, filter box, filter screen, ultrafiltration membrane, replenishment tank, delivery conduit, variable frequency booster pump, and pressure sensor. One end of the delivery conduit is connected to the buffer channel, and the other end is connected to the output end of the feed pump; the inlet of the feed pump is connected to the outlet of the filter box, which contains a 5μm precision filter screen and an ultrafiltration membrane to filter impurities and fine fiber debris, respectively; a replenishment tank is located above the filter box, storing the auxiliary agent mother liquor. The filter box contains a concentration sensor, a stirring assembly, and a heating assembly. The concentration sensor monitors the auxiliary agent concentration in real time, and automatically triggers the replenishment tank to add material when the concentration falls below the set value. The heating assembly controls the medium temperature at 25-30℃; the variable frequency booster pump, in conjunction with the pressure sensor, stabilizes the injection pressure at 0.3-0.6MPa.

[0009] Adjustment Components: These components enable precise three-dimensional positioning and angle adjustment of the fabric feed tube. They include a steering motor assembly, a lifting seat, a mounting frame, a horizontal guide rod, a second horizontal seat, a first horizontal push rod, and a lifting guide rod and lifting push rod. The lower end of the steering motor assembly is mounted on the lifting seat to adjust the pitch angle of the fabric feed tube. It has a built-in torque sensor to monitor the load status in real time. The lifting seat is vertically mounted on the lifting guide rod and connected to the lifting push rod at its bottom for height adjustment. The lower end of the lifting push rod is connected to the second horizontal seat, which slides within a groove in the first horizontal seat and is driven to move laterally by the second horizontal push rod. The first horizontal seat slides on the horizontal guide rod of the mounting frame and is driven to move laterally by the first horizontal push rod. The lateral movement directions of the first and second horizontal seats are perpendicular. The core actuator of the adjustment components uses a servo motor and ball screw structure, achieving a horizontal / height adjustment accuracy of ≤±0.02mm and an angle adjustment accuracy of ≤±0.1°. The mounting frame is fixed to the ground, and its bottom is equipped with damping and vibration reduction pads with a vibration attenuation rate of ≥80%, which prevents the vibration of the loom from affecting the positioning accuracy.

[0010] Multi-dimensional sensing module: Used to collect key data in the weaving process in real time, providing a basis for dynamic adjustment, including a laser sensor, a fiber wettability sensor, and a real-time density detector. The laser sensor is installed at the warp creel and weft yarn ejection channel to collect real-time warp density ρ (-150 yarns / inch) and weft yarn feed speed v (0-1 rpm); the fiber wettability sensor is installed 5-8 mm downstream of the warp and weft yarn interlacing point, detecting fiber wettability ω based on near-infrared spectroscopy; the real-time density detector is installed at the fabric output end, collecting fabric weaving density ρ based on micro-capacitive sensing technology, with an accuracy of ±1 yarn / inch. All sensors are connected to the PLC+AI controller, and signal transmission uses anti-interference shielded cables and an added filtering module, with a transmission error ≤0.1%.

[0011] The recycling and circulation system is used to achieve efficient recycling and reuse of the sprayed medium. It includes a recycling tank, a recycling water tank, a stirrer, and a stainless steel filter screen. The recycling tank has a funnel-shaped structure and is located below the intersection of the weft and warp axes. A stainless steel filter screen is laid inside the tank to filter large particles of impurities. The recycling tank is connected to the recycling water tank, which contains a stirrer and a concentration sensor. The stirrer ensures uniform medium composition, and the concentration sensor monitors the additive concentration in real time. The recycling water tank is connected to the filter box via a booster pump, forming a closed-loop circulation system of "spraying-recycling-filtration-replenishment-re-spraying".

[0012] PLC+AI Controller: As the core control unit, it has a built-in fabric parameter database (storing the optimal spraying parameters for 10+ types of downproof fabrics) and AI adaptive algorithm. It receives real-time data from multi-dimensional sensing modules, generates adjustment commands through preset algorithms, drives the adjustment components and liquid supply components to perform parameter adjustments, and realizes self-correction of abnormal working conditions and intelligent maintenance decisions.

[0013] Spraying method

[0014] Based on the above spraying structure, precise spraying of downproof fabric is achieved through the following steps:

[0015] Preparation before spraying:

[0016] Sensing and Control Calibration: Deploy multi-dimensional sensing modules, calibrate sensor accuracy using standard samples (fiber wetting sensor error ≤ ±1%), complete the linkage calibration of sensors, PLC+AI controller and actuator to ensure no signal transmission delay; initialize fabric parameter database and AI adaptive algorithm, and preset abnormal working condition thresholds (weft speed fluctuation > 10%, density deviation > 2%).

[0017] Actuator debugging: Calibrate and adjust the positioning accuracy of the components using the servo motor + ball screw assembly to ensure that the horizontal / height adjustment accuracy is ≤ ±0.02mm and the angle adjustment accuracy is ≤ ±0.1°; check the installation status of the damping and vibration reduction pads and anti-interference shielding wires to ensure the stability of equipment operation.

[0018] Preparation of the spraying medium: Using deionized water as the base liquid, add 0.5%-1% of polyoxyethylene ether low surface tension wetting agent and 0.3%-0.8% of water-based polyurethane emulsion environmentally friendly adhesive through the automatic proportioning module of the liquid supply component. Stir the mixture for 15-30 minutes until it is uniformly dispersed. The heating component preheats the medium temperature to 25-30℃, and the variable frequency booster pump starts and stabilizes the initial pressure at 0.3-0.6MPa.

[0019] Pre-treatment of the recycling system: Clean the residual impurities in the 304 recycling tank and the recycling water tank, check the integrity of the stainless steel filter screen and ultrafiltration membrane, and start the agitator to ensure stable operation.

[0020] Parameter initialization settings:

[0021] Input the down-proof fabric type (or automatically detect it via the fiber type identification module), and the PLC+AI controller will call the database to automatically match the initial spraying parameters: initial spray flow rate Q. o (0.5-2 L / min), initial injection angle θ o (35°), target fiber wetting rate ω o (95%), target fabric weaving density ρ o .

[0022] The dynamic spraying zone is automatically divided according to the fabric width B (1.5m-3m). The number of zones N = int(B / 0.4). When the remainder is ≥0.2m, N is increased by 1 (5-8 zones). Each zone corresponds to an independent micro flow metering pump (adjustment accuracy ≤±2%). The fabric feeding tube 100 is positioned by adjusting the assembly so that the distance between the nozzle and the interlacing point is controlled at 5-10mm.

[0023] Dynamic spraying execution:

[0024] Medium supply: The feed pump starts and delivers the prepared injection medium to the buffer channel through the liquid delivery conduit. It is then injected into the first channel through the L-shaped connecting hole and forms a stable "water film" from the flat fan-shaped injection nozzle, simultaneously delivering the warp and weft yarns to interweave.

[0025] Real-time data acquisition: Laser sensor, fiber wettability sensor, and real-time density detector continuously acquire warp density ρ, weft feed speed v, fiber wettability ω, and fabric weaving density ρ, with a data transmission frequency of 5-10 times / second.

[0026] Dynamic adjustment of spray parameters:

[0027] Jet flow rate adjustment: Based on the fundamental adjustment of warp density and weft speed, the formula is:

[0028] Combined with the zoning correction of fabric weaving density, the formula is: Wherein, k1 is the weft speed influence coefficient (0.6-0.9), k2 is the warp density influence coefficient (0.3-0.5), and k3 is the density deviation correction coefficient (0.03-0.05), ensuring that the spraying amount deviation in the width direction is ≤±3%.

[0029] Injection angle adjustment: The formula is: ;

[0030] Where Δθ1 is the correction amount based on the weft speed ( (k4=2-3), when v>1000 rpm, Δθ1 is -5° to 0°, and when v<600 rpm, it is 0° to 5°; Δθ2 is a correction based on fiber wetting rate ( (k5=1-2), when ω<93%, Δθ2 is 3°-5°, and the final angle range is 30°-45°.

[0031] Injection pressure adjustment: The formula is: Pressure fluctuations are controlled within ±0.05MPa.

[0032] Dynamic positioning of the actuator: The PLC+AI controller drives the servo motor and ball screw assembly to correct the horizontal position, height and pitch angle of the fabric feeding tube in real time, with a response time of ≤0.1 seconds, ensuring continuous and accurate positioning of the nozzle and weaving point.

[0033] Self-correction for abnormal operating conditions: When a weft speed fluctuation Δv=vv is detected. p-1 / v p-1 >10% (v p-1 When the speed is the same as the previous cycle, pre-adjustment is triggered 0.2 seconds in advance, and the pre-adjustment flow rate Q = Q × (1 + Δ) v ×k1), pre-adjustment angle θ=θ+Δ v ×k4; When the real-time torque M of the steering motor unit exceeds 3 N·m, immediately stop the machine and trigger an alarm. After the load is restored, press Q=Q. p-1 ×M o / M、θ=θ p-1 ×M o / M recovery parameters (M o =1-2N•m).

[0034] Intelligent maintenance and calibration:

[0035] Adaptive maintenance cycle generation: The maintenance cycle is generated based on the injection duration T, medium purity η, and equipment vibration amplitude A. The formula is as follows: Among them, T mo =8 hours, k6=0.5-0.8, k7=10-15, η≥99%, A≤0.05mm; shorten the maintenance cycle during high-frequency production and extend it during low-frequency production.

[0036] Regular maintenance procedures include: starting the nozzle self-cleaning program every 48 hours (the miniature ultrasonic oscillation component runs for 10 seconds at a frequency of 20-30kHz); checking sensor accuracy every 8 hours, and automatically calibrating when the error is > ±1%; replacing the 5μm precision filter daily and cleaning the ultrafiltration membrane weekly; and calibrating the actuator positioning accuracy and algorithm parameters weekly.

[0037] Quality closed-loop verification: Fabric samples are taken every 30 minutes to check the deviation of the amount of material sprayed in the width direction (≤±3%) and the fiber interlacing state; every 2 hours, the amount of filaments that emerge is tested according to GB / T14272 standard (≤5 threads / 100cm²), and the test results are fed back to the PLC+AI controller for parameter fine-tuning and optimization.

[0038] Media recovery and recycling:

[0039] Media recovery: Residual sprayed media falls into the recovery tank, and after being filtered through a 100-mesh stainless steel filter, it flows into the recovery water tank.

[0040] Recycling process: The agitator in the recycling tank continuously stirs the water, and the concentration sensor monitors the concentration of the additives in real time. When the concentration is lower than 90% of the set value, the additive mother liquor is automatically replenished. The booster pump delivers the recycled medium to the filter box. After secondary filtration through a 5μm precision filter and an ultrafiltration membrane, it is delivered back to the buffer channel. The recycling rate is ≥80%.

[0041] The present invention has the following beneficial effects:

[0042] This invention enhances the wear resistance and spray pattern stability of the nozzle by optimizing the material and structural design of the fabric feeding tube, enabling the sprayed material to form a uniform water film covering the interlacing area and improving the overall fiber wetting. The improved formulation of the composite spraying medium reduces the surface tension of water and enhances fiber cohesion, reducing gaps caused by fiber slippage after weaving. Based on a dynamic adjustment mechanism using laser sensing and PLC control, the spraying flow rate and angle can be adjusted in real time according to weaving parameters, effectively correcting local density unevenness and improving the fabric's anti-fleece consistency.

[0043] The closed-loop recycling system enables efficient recycling and reuse of the sprayed medium, which reduces the cost of auxiliary materials and wastewater discharge, in line with the concept of green production. The three-dimensional fine-tuning function of the adjustment components improves the equipment's adaptability to different fabric specifications. The overall synergistic effect significantly enhances the core performance and production practicality of downproof fabrics. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of one side of the invention;

[0045] Figure 2 This is a schematic diagram of the structure on the other side of the present invention;

[0046] Figure 3 This is a schematic diagram of the internal structure of the fabric feeding tube of the present invention;

[0047] Figure 4 This is a logic block diagram of the spraying method of the present invention;

[0048] Figure 5 This diagram illustrates the specific steps of the spraying method of the present invention.

[0049] In the diagram: 100 fabric feeding tube, 101 buffer outer cylinder, 102 first channel, 103 buffer channel, 104 L-shaped connecting hole, 105 second channel;

[0050] Steering motor assembly 200, lifting seat 201, mounting frame 202, horizontal guide rod 203, second horizontal seat 204, first horizontal push rod 205, first horizontal seat 206, second horizontal push rod 207, lifting guide rod 208, lifting push rod 209;

[0051] Feed pump 300, filter box 301, filter screen 302, replenishment tank 303, recovery tank 304, and delivery conduit 305;

[0052] Meridian 400, parallel group 500, meridian information acquisition module 600. Detailed Implementation

[0053] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0054] refer to Figures 1-5 As shown, a spraying structure for a water-jet loom suitable for down-proof fabrics includes a weaving feed tube 100 for feeding warp yarns 400 in a horizontal and vertical direction toward the weft group 500. The weaving feed tube 100 has a first channel 102 and a second channel 105 inside. The second channel 105 is near the yarn inlet, and the first channel 102 is near the yarn outlet. The diameter of the first channel 102 is larger than the diameter of the second channel 105. The end of the second channel 105 is provided with an arc-shaped guide surface to reduce wear on the yarn. The outer side of the weaving feed tube 100 containing the second channel 105 is fitted with a sleeve. A buffer channel 103 is provided, and an L-shaped connecting hole 104 is provided on the weaving thread feeding tube 100 to connect the first channel 102 and the buffer channel 103. The water outlet end of the L-shaped connecting hole 104 faces the outlet position of the first channel 102, so that after the liquid is discharged along the L-shaped connecting hole 104, it can be collected in the first channel 102, and then the warp 400 is fed out along the first channel 102. A liquid supply component for providing liquid is connected to the outside of the buffer channel 103, and a warp information acquisition module 600 for acquiring the parameters of the warp 400 is provided at the feed end of the weaving thread feeding tube 100.

[0055] Laser sensors are installed at the warp creel and weft yarn ejection channel of the loom to detect the warp density (e.g., 100-150 yarns / inch) and weft yarn feeding speed (0-1200 rpm) in real time. The data is transmitted to the PLC controller, which automatically adjusts the jet flow rate (0.5-2L / min) and jet angle (30°-45°, the angle with the weft yarn movement direction) through a preset algorithm to ensure that each weft yarn can be uniformly sprayed when it interweaves with the warp yarn.

[0056] The fabric feeding tube 100 is connected to an adjustment assembly for adjusting its position. The adjustment assembly includes a steering motor assembly 200 for adjusting its pitch angle. The lower end of the steering motor assembly 200 is mounted on a lifting seat 201, which is vertically sleeved on a lifting guide rod 208. A lifting push rod 209 for adjusting its height is connected to the bottom of the lifting seat 201. The lower end of the lifting push rod 209 is connected to the upper end of a second horizontal seat 204. The second horizontal seat 204 is slidably disposed in a groove on a first horizontal seat 206. The second horizontal seat 204 is connected to a second horizontal push rod 207 for driving its lateral movement. The first horizontal seat 206 is slidably disposed in a horizontal guide rod 203 on a mounting frame 202. Mounting frame 202 is fixed on the ground. Horizontal guide rod 203 is horizontally mounted inside mounting frame 202. First horizontal seat 206 is connected to first horizontal push rod 205 for driving its horizontal movement. The horizontal movement directions of first horizontal seat 206 and second horizontal seat 204 are perpendicular. The first horizontal push rod 205 and second horizontal push rod 207 push horizontally, thereby adjusting the horizontal position of weaving feed tube 100. Lifting push rod 209 drives lifting seat 201 to lift, thereby adjusting the height of weaving feed tube 100. Steering motor group 200 drives weaving feed tube 100 to rotate, completing the adjustment of pitch angle, thereby fine-tuning the position and angle of warp thread 400 exiting the weaving feed tube 100 to meet different processing requirements.

[0057] The fabric feeding tube 100 is made of zirconia ceramic material, which has high hardness and wear resistance, and avoids deformation of the nozzle due to long-term spraying. The spray nozzle is designed as a flat fan shape (2-3mm wide and 0.1-0.2mm thick), so that the sprayed material forms a uniform "water film" that covers the interlacing area of ​​weft and warp yarns, enhancing the overall wetting of fibers.

[0058] Liquid medium formulation: Deionized water is used as the base liquid, with the addition of 0.5%-1% of a low surface tension wetting agent (such as polyoxyethylene ethers) and 0.3%-0.8% of an environmentally friendly binder (such as waterborne polyurethane emulsion). The wetting agent reduces the surface tension of water, ensuring sufficient wetting of the fibers; the binder forms a micro-adhesive layer at the fiber interlacing points, reducing the increase in gaps caused by fiber slippage after weaving.

[0059] The liquid supply assembly includes a liquid delivery conduit 305 connected to the outside of the buffer outer cylinder 101. The lower end of the liquid delivery conduit 305 is connected to the output end of the feed pump 300. The inlet end of the feed pump 300 is connected to the outlet of the filter box 301. The filter box 301 is provided with a filter screen 302 for filtering the liquid. The filter box 301 is connected to the outlet end of the recovery tank 304. The recovery tank 304 is located below the intersection of the weft yarn group 500 and the warp yarn 400 to facilitate liquid recovery. The feed pump 300 sends the liquid into the buffer outer cylinder 101 along the liquid delivery conduit 305. The liquid enters the first channel 102 along multiple L-shaped connecting holes 104, thereby sending out the warp yarn 400 in the first channel 102 and completing the weaving of the warp yarn 400. The residual liquid falls into the recovery tank 304. The liquid then enters the filter box 301 to complete filtration and recovery, so as to achieve recycling.

[0060] Above the filter box 301 is a replenishment tank 303 for replenishing liquid. The filter box 301 is equipped with a concentration sensor for detecting the liquid to monitor the concentration of the additive in real time. When the concentration is lower than the set value, the discharge valve at the lower end of the replenishment tank 303 opens to automatically replenish the additive mother liquor. The filter box 301 where the replenishment tank 303 is located is equipped with a stirring component for stirring the liquid and a heating component for heating, so that the liquid maintains a preset temperature.

[0061] Liquid supply assembly: Designed with a filtration + constant temperature and pressure supply unit. It removes fine fiber debris through an ultrafiltration membrane; equipped with a variable frequency booster pump and pressure sensor, it stabilizes the injection pressure at 0.3-0.6 MPa (adjusted according to the fabric yarn count), while a heating rod controls the medium temperature at 25-30℃ to prevent temperature fluctuations from affecting medium performance;

[0062] Specific application scenarios of spraying methods:

[0063] 1. Application of spray coating on high-count cotton downproof fabric

[0064] Preparation before spraying: Select high-count cotton fabric (warp density 130-150 threads / inch), calibrate the multi-dimensional sensing module, and set the laser sensor detection frequency to 10 times / second (warp density) and 5 times / second (weft speed); adjust the component positioning accuracy to calibrate to horizontal / height ±0.01mm and angle ±0.05°; prepare the spraying medium: deionized water + 0.5% polyoxyethylene ether impregnating agent + 0.3% water-based polyurethane emulsion, stir for 20 minutes, heat to 28-30℃, and set the initial pressure to 0.5-0.6MPa.

[0065] Parameter initialization: The PLC+AI controller calls the corresponding parameters for the high-count cotton, and the initial spray flow rate Q is set. o =1.5-2.0 L / min, initial angle θ o=35°; fabric width 1.8m, automatically divided into 5 spray zones (N=int(1.8 / 0.4)=4, remainder 0.2m, N+1=5); distance between nozzle and interlacing point set to 8mm.

[0066] Dynamic spraying: A laser sensor detects the weft yarn feeding speed v = 800-1200 rpm and the warp yarn density ρ = 140 yarns / inch in real time; when v = 1100 rpm, Δθ1 = 2 × ln(1000 / 1100) ≈ -0.19°, and the spraying angle θ = 35° - 0.19° ≈ 34.81°;

[0067] Real-time density meter measures ρ roots per inch, ρ o =140 threads / inch;

[0068] Q1=1.8×[1+0.8×(1100-1000) / 1000+0.4×(140-140) / 140]=1.944L / min, Q=1.944×[1+0.04×(142-140) / 140]≈1.958L / min;

[0069] Pressure P = 0.55 × 1.958 / 1.8 ≈ 0.59 MPa.

[0070] Maintenance and Cycle: Spraying time 16 hours (high-frequency production);

[0071] Maintenance cycle:

[0072] T m =8×[1+0.6×(1-0.99)-12×0.03]=8×[1+0.006-0.36]=5.168 hours, the filter screen is replaced as planned; the recovered medium is recycled after secondary filtration, and the recycling rate reaches 85%.

[0073] Performance verification: The deviation of the amount of material sprayed at 5 points in the width direction is ≤±2.5%, the fiber wetting rate is 96%, and the amount of fabric filaments that emerge is 3 per 100cm², which meets the GB / T14272 standard.

[0074] 2. Application of spray coating on polyester microfiber downproof fabric

[0075] Preparation before spraying: Select polyester microfiber fabric (warp density 100-130 yarns / inch), calibrate sensor accuracy; adjust component positioning accuracy to meet calibration standards; prepare spraying medium: deionized water + 1% polyoxyethylene ether impregnating agent + 0.8% water-based polyurethane emulsion, stir for 30 minutes, heat to 25-28℃, and set the initial pressure to 0.3-0.5MPa.

[0076] Parameter initialization: Initial injection flow rate Q o=0.5-1.5L / min, initial angle θ o =35°; Fabric width 2.5m, automatically divided into 7 spray zones (N=int(2.5 / 0.4)=6, remainder 0.1m<0.2m, N=6? Correction: 2.5 / 0.4=6.25, remainder 0.1m<0.2m, N=6? According to the formula N=int(2.5 / 0.4)=6, remainder 0.1m<0.2m, so N=6); The distance between the nozzle and the interlacing point is set to 6mm.

[0077] Dynamic spraying: Weft yarn feeding speed v = 600 rpm, Δθ1 = 3 × ln(800 / 600) ≈ 1.098°, spraying angle θ = 35° + 1.098° ≈ 36.1°; fiber wetting rate ω = 92%, Δθ2 = 2 × (95 - 92) = 6°, since ω < 93%, take Δθ2 = 4°, finally θ = 35 + 1.1 + 4 = 40.1°; warp density ρ = 120 yarns / inch, Q1 = 1.0 × [1 + 0.7 × (600 - 800) / 800 + 0.5 × (120 - 120) / 120] = 1.0 × [1 - 0.175] = 0.825 L / min;

[0078] Real-time density ρ_root / inch, Q = 0.825 × [1 + 0.05 × (121 - 120) / 120] ≈ 0.828 L / min; pressure P = 0.4 × 0.828 / 1.0 ≈ 0.331 MPa.

[0079] Maintenance and Cycle: Spraying time 8 hours,

[0080] Maintenance cycle:

[0081] T m =8×[1+0.7×(1-0.99)-14×0.02]=8×[1+0.007-0.28]=5.816 hours; the recycling rate of the recovered medium reaches 88%.

[0082] Performance verification: The deviation of the amount of material sprayed in the width direction is ≤±3%, the fiber wetting rate is 95%, the amount of fabric filaments that emerge is 2 per 100cm², and the anti-fleece performance is excellent.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spraying structure for a water-jet loom suitable for down-proof fabrics, characterized in that, include: The fabric feeding tube (100) is used to feed the warp yarn (400) in the horizontal and vertical directions toward the weft group (500); the buffer outer cylinder (101) is sleeved on the outside of the fabric feeding tube (100) and forms a buffer channel (103) with the fabric feeding tube (100). The liquid supply assembly, connected to the buffer channel (103), is used to provide the injection medium; An adjustment component, connected to the fabric feeding tube (100), is used to adjust the position and pitch angle of the fabric feeding tube (100); The warp information acquisition module (600) is set at the feed end of the weaving feed tube (100) and is used to acquire weaving-related parameters; A recycling assembly is located below the intersection of the latitude group (500) and the longitude group (400) for recycling and reusing the jetting medium.

2. The spraying structure of the water-jet loom for down-proof fabrics according to claim 1, characterized in that, The fabric feeding tube (100) is made of zirconia ceramic material. It has a first channel (102) and a second channel (105) inside. The second channel (105) is close to the inlet position, and the first channel (102) is close to the outlet position. The diameter of the first channel (102) is larger than the diameter of the second channel (105). The end of the second channel (105) is provided with an arc-shaped guide surface. The fabric feeding tube (100) has multiple L-shaped connecting holes (104). The L-shaped connecting holes (104) connect the first channel (102) and the buffer channel (103). The water outlet is facing the outlet position of the first channel (102). The outlet of the fabric feeding tube (100) is a flat fan-shaped spray nozzle.

3. The spraying structure of the water-jet loom for down-proof fabrics according to claim 1, characterized in that, The liquid supply assembly includes a feed pump (300), a filter box (301), a filter screen (302), an ultrafiltration membrane, a replenishment tank (303), a liquid delivery conduit (305), a variable frequency booster pump, and a pressure sensor; one end of the liquid delivery conduit (305) is connected to a buffer channel (103), and the other end is connected to the output end of the feed pump (300); the inlet end of the feed pump (300) is connected to the outlet of the filter box (301), and the filter box (301) is provided with a filter screen and an ultrafiltration membrane in sequence; the replenishment tank (303) is provided above the filter box (301), and the filter box (301) is provided with a concentration sensor, a stirring assembly, and a heating assembly; the variable frequency booster pump and the pressure sensor work together to regulate the injection pressure, and the heating assembly regulates the medium temperature.

4. The spraying structure of the water-jet loom for down-proof fabrics according to claim 1, characterized in that, The adjustment assembly includes a steering motor assembly (200), a lifting seat (201), a mounting frame (202), a horizontal guide rod (203), a second horizontal seat (204), a first horizontal push rod (205), a first horizontal seat (206), a second horizontal push rod (207), a lifting guide rod (208), and a lifting push rod (209). The lower end of the steering motor assembly (200) is mounted on the lifting seat (201), and the lifting seat (201) is vertically sleeved on the lifting guide rod (208) with its bottom connected to the lifting push rod (209). 9) Connection; The lower end of the lifting push rod (209) is connected to the second horizontal seat (204), the second horizontal seat (204) is slidably disposed in the groove of the first horizontal seat (206) and connected to the second horizontal push rod (207); the first horizontal seat (206) is slidably disposed on the horizontal guide rod (203) of the mounting frame (202) and connected to the first horizontal push rod (205), and the lateral movement direction of the first horizontal seat (206) and the second horizontal seat (204) is perpendicular; the mounting frame (202) is fixed on the ground.

5. The spraying structure of the water-jet loom for down-proof fabrics according to claim 1, characterized in that, The warp information acquisition module (600) includes a laser sensor, which is installed at the warp frame and weft yarn ejection channel of the loom to detect the warp density and weft yarn feeding speed. The laser sensor is connected to a PLC controller, which adjusts the jet flow rate and jet angle through a preset algorithm.

6. The spraying structure of the water-jet loom for down-proof fabrics according to claim 1, characterized in that, The recycling and circulation component includes a recycling tank (304) and a recycling water tank; the recycling tank (304) has a funnel-shaped structure, and a filter screen is laid inside the recycling tank (304). The recycling tank (304) is connected to the recycling water tank; the recycling water tank is equipped with a stirrer and a concentration sensor. The recycling water tank is connected to the filter box (301) through a booster pump to form a closed-loop circulation system.

7. The spraying structure of the water-jet loom for down-proof fabrics according to claim 1, characterized in that, The spraying medium uses deionized water as the base liquid, with the addition of a low surface tension wetting agent and an environmentally friendly adhesive.

8. The spraying structure of the water-jet loom for down-proof fabrics according to claim 2, characterized in that, The flat, fan-shaped nozzle enables the sprayed material to form a uniform "water film" that covers the area where the weft and warp yarns interweave.

9. The spraying structure of the water-jet loom for down-proof fabrics according to claim 5, characterized in that, The aerosol spraying method of the aerosol structure includes the following steps: Step 1: Preparation before spraying: Deploy multi-dimensional sensing modules and high-precision actuators, initialize the fabric parameter database and AI adaptive algorithm, and complete the linkage calibration of sensing modules, control units and actuators; Step 2: Parameter initialization: Based on the type of downproof fabric or the detected fiber characteristics, the database is called to automatically match the initial spraying parameters with the actuator positioning parameters; Step 3: Dynamic spraying execution: The sensing module collects multi-dimensional data in real time during the weaving process, and generates adjustment instructions through AI+PLC collaborative decision-making. This drives the actuator to dynamically adjust the spraying parameters and positioning status, thereby achieving closed-loop control. Step 4: Intelligent Maintenance and Calibration: Real-time monitoring of the operating status of the sensing module and actuator, adaptive generation of maintenance plans based on operating data, and regular calibration of parameters and equipment accuracy to ensure the stability of material spraying.

10. The spraying structure of the water-jet loom for down-proof fabrics according to claim 9, characterized in that, The multi-dimensional sensing module in step 1 includes a laser sensor, a fiber wettability sensor, and a real-time density detector; the laser sensor is used to collect warp density ρ and weft feeding speed v, the fiber wettability sensor is used to collect fiber wetting rate ω, and the real-time density detector is used to collect fabric weaving density ρ; the high-precision actuator includes a servo motor-driven three-dimensional adjustment component, a micro flow metering pump, and a variable frequency booster pump; the linkage calibration includes sensor accuracy calibration, actuator positioning accuracy calibration, and signal transmission delay calibration.

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