A smart fabric inspection machine

Abstract

This invention relates to the field of fabric inspection machine technology, and in particular discloses an intelligent fabric inspection machine, including a frame, and a fabric conveying system, a detection marking system, and a main control system that are electrically coordinated with each other; the fabric conveying system includes an unwinding device and a winding device respectively disposed at both ends of the frame, and a fabric guiding mechanism located between the unwinding device and the winding device, for an automatic fabric threading device for transferring the fabric carried by the unwinding device along the fabric guiding mechanism to the winding device for winding; the detection marking system includes a robotic arm device, a labeling device, and a detection device, the detection device being used to detect the location of defects on the fabric between the unwinding device and the winding device, and the labeling device, driven by the robotic arm device, labeling the location of defects on the fabric.

Description

Technical Field

[0001] This invention relates to the field of fabric inspection machine technology, and in particular discloses an intelligent fabric inspection machine. Background Technology

[0002] In the textile industry, fabric inspection machines are essential equipment for detecting fabric quality, identifying defects, recording fabric information, and grading. Traditional fabric inspection machines can be broadly categorized into manual and semi-automatic machines. Manual inspection machines rely primarily on visual inspection of fabric defects, resulting in low efficiency and susceptibility to human factors (such as fatigue and subjective judgment bias). While semi-automatic inspection machines can utilize basic photoelectric sensors to detect fabric defects, they lack intelligent analysis capabilities and still require manual intervention to determine the type and severity of defects.

[0003] In existing technologies, some high-end fabric inspection machines have integrated basic automation devices, such as servo-driven detection systems, simple optical sensors, and PLC control systems. However, the following technical problems still exist: Inconsistent standards for judging fabric defects among different factories and operators lead to unstable inspection results, affecting the collaborative work of upstream and downstream supply chains; traditional fabric inspection machines typically require manual fabric threading, which is complex and time-consuming, impacting production efficiency; existing detection systems can only simply identify defect locations but cannot combine intelligent algorithms to optimize labeling positions, requiring manual labeling, resulting in low recognition accuracy and labeling accuracy; single-axis drive labeling systems have large positioning deviations and do not address detection interference caused by fabric tension fluctuations and wrinkles. Furthermore, the fabric transport, defect identification, and precise marking processes in existing fabric inspection equipment are fragmented, making it difficult to achieve highly stable unmanned operation. These shortcomings make it difficult for fabric inspection equipment to meet the upgrading needs of the modern textile industry in terms of efficiency, accuracy, and intelligence. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide an intelligent fabric inspection machine to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides an intelligent fabric inspection machine, comprising a frame, a fabric conveying system, a detection marking system, and a main control system, wherein the fabric conveying system and the detection marking system are electrically connected to the main control system. The fabric conveying system includes an unwinding device located at one end of the frame, a winding device located at the other end of the frame, and an automatic fabric threading device for transferring the fabric carried by the unwinding device to the winding device for winding. The detection and marking system includes a robotic arm device, a labeling device located at the output end of the robotic arm device, and a detection device that works in conjunction with the labeling device. The detection device is used to detect the location of defects on the fabric between the unwinding device and the winding device. The labeling device, driven by the robotic arm device, labels the location of defects on the fabric.

[0006] Furthermore, the detection device includes an arc-shaped fabric guide platform mounted on a frame, a first supplementary light located on one side of the arc-shaped fabric guide platform, and a first detection camera configured in conjunction with the first supplementary light. The arc-shaped fabric guide platform has a convex smooth arc surface for supporting the fabric guided by the fabric guide mechanism. The first supplementary light is used to emit straight stripes of light that illuminate the convex smooth arc surface. The first detection camera is used to capture images of the fabric supported by the convex smooth arc surface illuminated by the straight stripes of light. The main control system receives the images captured by the first detection camera and detects and analyzes whether the fabric has defects.

[0007] Furthermore, the unwinding device includes a first base disposed on the other side of the frame, an unwinding bracket disposed on the first base, a weight sensor disposed between the first base and the unwinding bracket, an unwinding roller rotatably disposed on the unwinding bracket and used to carry external fabric rolls, and a fourth drive motor connected to the unwinding roller. The unwinding device also includes a weight display screen electrically coupled to the weight sensor.

[0008] Furthermore, the winding device includes a second base disposed on one side of the frame, a winding bracket reciprocatingly disposed on the second base, a transverse drive mechanism connected to the winding bracket, a winding roller rotatably disposed on the winding bracket, and a fifth drive motor connected to the winding roller.

[0009] Furthermore, the automatic fabric feeding device includes a circulating fabric feeding mechanism movably mounted on the frame, a fabric feeding conveying mechanism connected to the circulating fabric feeding mechanism, and a fabric feeding drive mechanism connected to the fabric feeding conveying mechanism; the circulating fabric feeding mechanism includes a fabric clamping manipulator for limiting one end of the external fabric, and the fabric feeding drive mechanism drives the fabric clamping manipulator to reciprocate between the unwinding device and the winding device via the fabric feeding conveying mechanism.

[0010] Furthermore, the fabric feeding and conveying mechanism includes a plurality of first gears rotatably mounted on the frame and an annular toothed belt meshing with the plurality of first gears, the plurality of first gears being spaced apart on the frame; the fabric feeding drive mechanism includes a first drive motor connected to the first gears, the fabric clamping manipulator being connected to the annular toothed belt, and the fabric, limited by the fabric clamping manipulator, reciprocates between the unwinding device and the winding device under the action of the fabric feeding drive mechanism and the fabric feeding and conveying mechanism to achieve the fabric threading operation.

[0011] Furthermore, the fabric feeding and conveying mechanism also includes multiple guide rollers rotatably mounted on the frame. The rotation axis of the guide rollers coincides with the rotation axis of the first gear. The output end of the first drive motor is connected to the first gear and / or the guide rollers via a first gear belt mechanism. The first drive motor drives the first gear to rotate, which in turn drives the annular toothed belt to rotate cyclically. The annular toothed belt then drives the fabric clamping robot on it to clamp one end of the unwinding device and transfer it to the winding device for winding, thus replacing the manual fabric feeding operation.

[0012] Furthermore, the fabric clamping robot includes a movable plate fixedly mounted on an annular toothed belt and a fabric clamping plate rotatably mounted on the movable plate via a torsion spring. One end of the torsion spring is equipped with a transmission bracket. The fabric clamping robot also includes a first cylinder mounted on the frame. The piston rod of the first cylinder is used to abut the transmission bracket. When the movable plate moves to the first cylinder under the drive of the annular toothed belt, the first cylinder drives its piston rod to abut the transmission bracket, thereby compressing the torsion spring and causing the fabric clamping plate to move away from the movable plate. At this time, the operator can move one end of the fabric on the unwinding device between the movable plate and the fabric clamping plate. Then, the first cylinder drives the piston rod to reset, and the torsion spring resets, causing the fabric clamping plate to reset and clamp the fabric between the movable plate and the fabric clamping plate. Subsequently, the fabric feeding drive mechanism and the fabric feeding conveyor mechanism start working, guiding one end of the fabric clamped by the fabric clamping robot to the take-up roller of the take-up device. The operator only needs to remove one end of the fabric and wrap it around the take-up roller to fix it.

[0013] Furthermore, the robotic arm device includes a first drive mechanism and a second drive mechanism. The first drive mechanism includes a first slide rail mounted on the frame, a first slide table slidably mounted on the first slide rail, and a second drive motor connected to the first slide table. The second drive mechanism includes a second slide rail mounted on the first slide table, a second slide table slidably mounted on the second slide rail, and a third drive motor connected to the second slide table. The labeling device includes a suction nozzle mounted on the second slide table and an air source module connected to the suction nozzle. The movement direction of the first slide table and the movement direction of the second slide table are intersected. The movement path of the fabric is intersected with the movement directions of the first slide table and the second slide table, respectively.

[0014] Furthermore, the labeling device also includes a label transfer mechanism, which includes a label release wheel rotatably mounted on a first slide for releasing external labels, a label track cooperating with the label release wheel, a label feeding roller rotatably mounted on one side of the label track, and a paper receiving wheel rotatably mounted on the other side of the label track. The labels released by the label release wheel are flattened onto the label track via the label feeding roller. The air source module is used to drive the suction nozzle to pick up the labels on the adhesive feeding track and, with the cooperation of the robotic arm device and the detection device, affix them to the defective position of the fabric.

[0015] Furthermore, the detection marking system also includes an intelligent coder located between the unwinding device and the rewinding device. The intelligent coder includes a lifting mechanism mounted on the frame, a measuring wheel located at the output end of the lifting mechanism for contacting the fabric, a coder coaxially connected to the measuring wheel, and a first position sensor electrically coupled to the lifting mechanism. The first position sensor is used to detect the position information of one end of the fabric conveyed by the automatic unwinding and fabric feeding device, and triggers the lifting mechanism to drive the measuring wheel to move forward to contact the fabric. When the first position sensor does not detect the fabric, it triggers the lifting mechanism to drive the measuring wheel to move backward to reset.

[0016] Furthermore, the guiding mechanism includes multiple tension rollers rotatably mounted on the frame and located between the unwinding and rewinding devices. The detection device further includes a detection platform located between two adjacent tension rollers, a second supplementary light mounted on the detection platform, a lampshade covering the detection platform and the second supplementary light, and a second detection camera mounted above the detection platform. The second detection camera is electrically connected to the robotic arm device and the labeling device via the main control system. The second detection camera is used to take a second image of the area above the detection platform and upload the image to the main control system. The main control system analyzes whether there are still defects in the image. If so, it randomly adjusts the robotic arm device and the labeling device to label the defective locations.

[0017] Furthermore, the unwinding device includes a first base disposed on the other side of the frame, an unwinding bracket disposed on the first base, a weight sensor disposed between the first base and the unwinding bracket, an unwinding roller rotatably disposed on the unwinding bracket and used to carry external fabric rolls, and a fourth drive motor connected to the unwinding roller. The unwinding device also includes a weight display screen electrically coupled to the weight sensor.

[0018] Furthermore, the fabric conveying system also includes a tension control device that works in conjunction with the unwinding device. The tension control device includes a buffer space located within the frame and a tension detector for detecting the tension of the fabric unwound by the unwinding device within the buffer space. The tension detector is electrically connected to the main control system via a fourth drive motor. The tension detector is used to detect the tension of the fabric within the buffer space or the height of the fabric accumulation within the buffer space. Based on the detected parameters of the fabric tension or accumulation height, the tension detector triggers the main control system to adjust the rotational speed of the unwinding roller driven by the fifth drive component, thereby adjusting the unwinding speed of the unwinding roller and thus regulating the tension of the fabric.

[0019] Furthermore, the fabric conveying system also includes a fabric flattening device, which includes a flattening roller rotatably mounted on a frame and two flattening components spirally wound around the flattening roller, the spiral directions of the two flattening components being opposite.

[0020] Furthermore, the fabric flattening device is provided in multiple sets, which are respectively set up in conjunction with the wrinkle detection device, the detection device and the winding device, for flattening the fabric once after the wrinkle detection device, flattening it twice before the detection device and flattening it finally during the winding process of the winding device.

[0021] The core working principle of this invention: (1) Fabric transport and automated control: After the fabric is initially unwound by the unwinding device, it is guided to the winding device by the automatic fabric threading device. During the fabric threading process, the fabric clamping robot is driven by the ring toothed belt to complete the gripping and threading of the fabric end. The unwinding speed is adjusted in conjunction with the tension control device to ensure stable fabric transport and constant tension.

[0022] (2) Defect detection and precise marking: The detection device (second detection camera) combined with the supplementary light and lampshade captures the defects on the fabric surface. The robotic arm device (first / second slide, lead screw and servo motor) drives the nozzle to accurately locate the defect and label it. The wrinkle detection device identifies the deformed wrinkles of the fabric by combining the arc-shaped guide table and the camera, and triggers the flattening device to flatten it.

[0023] (3) Dynamic feedback adjustment: The intelligent code counter monitors the fabric displacement distance in real time through the meter wheel and the lifting mechanism. The tension detector is linked with the main control system to adjust the speed of the unwinding roller to ensure constant fabric tension and reduce detection error.

[0024] The beneficial effects of this invention are: (1) Full-process automation replaces manual labor: Through the automatic fabric threading device (fabric clamping robot + ring toothed belt) and multi-axis drive labeling system, the entire process of fabric threading, detection, marking and winding is unmanned, and the efficiency is significantly improved.

[0025] (2) AI dynamically optimizes detection accuracy: The algorithm library combined with the data migration module enables the machine to learn the manual fabric inspection standards autonomously, reduce the missed detection rate and adapt to diversified production needs, and solve the problem of fixed parameters of traditional fabric inspection machines.

[0026] (3) Multi-dimensional collaborative detection system: The defect detection and wrinkle detection systems complement each other, and the three-stage flattening device (spiral reverse flattening roller) eliminates the interference of fabric deformation and improves the detection accuracy; the intelligent coder and tension closed-loop control ensure the stability of detection position and tension.

[0027] (4) Modular expansion capability: The supply chain interface supports external device access, the algorithm library can be expanded to be compatible with new defect types, and the label transfer mechanism and robotic arm device can be adapted to different size labels, enhancing the equipment versatility.

[0028] (5) User-friendly human-machine interaction: The weight sensor and display screen show the fabric roll weight in real time, and the opening and closing of the clamping plate triggered by the first cylinder simplifies the manual intervention steps and reduces the complexity of operation.

[0029] This invention, through the deep integration of mechanical structure innovation and AI technology, has achieved a high-efficiency and intelligent upgrade of the fabric inspection process in the textile industry, with significant value in saving production costs and improving quality control. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the intelligent fabric inspection machine of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the intelligent fabric inspection machine of the present invention after partial cross-section; Figure 3 This is a schematic diagram of the position and structure of the tension control device of the present invention; Figure 4 This is a schematic diagram of the automatic fabric feeding device of the present invention; Figure 5 This is a schematic diagram of the fabric clamping robot of the present invention; Figure 6 This is a schematic diagram showing the position of the first supplementary light of the present invention; Figure 7 This is a schematic diagram of the unwinding device of the intelligent fabric inspection machine of the present invention; Figure 8 This is a schematic diagram of the winding device of the intelligent fabric inspection machine of the present invention; Figure 9 This is a schematic diagram of the transverse drive mechanism in the winding device of the present invention; Figure 10 This is a schematic diagram of the robotic arm device of the present invention; Figure 11 This is a schematic diagram of the tag transfer mechanism of the present invention; Figure 12 This is a schematic diagram of the fabric flattening device of the present invention; Figure 13 This is a schematic diagram of the intelligent code counter of the present invention.

[0031] The reference numerals in the figures include: 1. Frame; 2. Fabric conveying system; 3. Detection and marking system; 4. Main control system; 21. Unwinding device; 211. First base; 212. Unwinding bracket; 213. Weight sensor; 214. Unwinding roller; 215. Fourth drive motor; 216. Fabric baffle; 22. Automatic fabric feeding device; 221. Circulating fabric feeding mechanism; 222. Fabric feeding and conveying mechanism; 2221. First gear; 2222. Annular toothed belt; 2223. Guide roller; 223. Fabric feeding drive mechanism; 224. Fabric clamping robot; 224 1. Moving plate; 2242. Torsion spring; 2243. Fabric clamping plate; 2244. Transmission bracket; 2245. First cylinder; 23. Winding device; 230. Second base; 231. Winding bracket; 232. Lateral drive mechanism; 2321. Roller bracket; 2322. Roller component; 2323. Rack; 2324. Correcting roller; 2325. Sixth drive motor; 2326. Second gear; 2327. Groove photoelectric sensor; 233. Winding roller; 234. Fifth drive motor; 24. Tensioning roller; 25. 251. Tension control device; 252. Buffer space; 253. Tension detector; 26. Fabric flattening device; 264. Flattening roller; 265. Flattening component; 266. Seventh drive motor; 31. Robotic arm device; 315. First drive mechanism; 315. First slide rail; 315. First slide table; 315. Second drive mechanism; 315. Second slide rail; 315. Second slide table; 315. Third drive motor; 32. Detection device; 325. Detection platform; 325. Second supplementary light; 325. 323. Lampshade; 33. Second detection camera; 34. Labeling device; 351. Suction nozzle; 362. Label transfer mechanism; 3720. Mounting plate; 3821. Label placement wheel; 3922. Label track; 3023. Label feeding roller; 314. Paper receiving roller; 355. Intelligent code counter; 361. Lifting mechanism; 372. Meter counting wheel; 383. Code counter; 394. First position sensor; 301. Arc-shaped guide table; 312. First supplementary light; 323. First detection camera; 334. Second position sensor. Detailed Implementation

[0032] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0033] Please see Figures 1 to 13As shown, this invention provides an intelligent fabric inspection machine, including a frame 1, a fabric conveying system 2, an inspection and marking system 3, and a main control system 4. These systems cooperate to achieve efficient fabric inspection, intelligent analysis, and automatic marking. The fabric conveying system 2 consists of an unwinding device 21, a winding device 23, and an automatic fabric threading device 22. The unwinding device 21 is responsible for carrying and releasing the fabric, the winding device 23 collects the inspected fabric, and the automatic fabric threading device 22 ensures that the fabric is smoothly and orderly conveyed from the unwinding device 21 to the winding device 23, avoiding uneven fabric tension or wrinkles.

[0034] The inspection and marking system 3 consists of an inspection device 32, a robotic arm device 31, and a labeling device 33. The inspection device 32 is installed on the fabric transport path between the unwinding device 21 and the rewinding device 23, scanning the fabric surface in real time to identify defect locations and transmitting the data to the main control system 4. The robotic arm device 31 precisely locates the defect based on the defect location information and drives the labeling device 33 to mark the defective area, ensuring marking accuracy and reducing manual intervention. This invention achieves high-precision and efficient intelligent fabric inspection through automated mechanical transport, inspection, and marking devices, reducing reliance on manual labor, improving production consistency, and providing real-time quality data support for the supply chain.

[0035] Specifically, the detection device 32 includes an arc-shaped fabric guide platform 351 mounted on the frame 1, a first supplementary light 352 mounted on one side of the arc-shaped fabric guide platform 351, and a first detection camera 353 configured in conjunction with the first supplementary light 352. The arc-shaped fabric guide platform 351 has a convex smooth arc surface for supporting the fabric guided by the fabric guide mechanism. The first supplementary light 352 is used to emit straight stripes of light that illuminate the convex smooth arc surface. The first detection camera 353 is used to capture images of the fabric supported by the convex smooth arc surface illuminated by the straight stripes of light. The main control system 4 receives the images captured by the first detection camera 353 and detects and analyzes whether the fabric has defects.

[0036] Specifically, the first supplementary light 352 uses a high-brightness LED line light source, capable of emitting stable straight beams of light, which illuminate the convex, smooth arc surface of the curved fabric guide table 351 at a specific angle. After the straight beams of light are irradiated, a uniform light band is formed on the fabric surface, enhancing the visibility of fabric surface details. The first inspection camera 353 uses a high-resolution CMOS sensor and is equipped with an industrial-grade lens, capable of accurately capturing images of the fabric surface after the straight beams of light have irradiated it. When the fabric has defects (such as broken yarns, holes, color differences, or oil stains), it will affect the reflection characteristics of the straight beams of light, thus appearing as distortion, missing parts, or color changes in the light band in the camera image.

[0037] Specifically, after receiving images from the detection camera, the main control system 4 uses deep learning algorithms (such as CNN convolutional neural networks) to classify the types of defects and automatically triggers marking or alarm mechanisms based on the severity of the defects: Minor imperfections (such as slight color differences): Record the location data and store it in the inspection log; Severe defects (such as large-area damage): Trigger the automatic labeling device to affix defect labels to the corresponding fabric area and upload the data to the production management system.

[0038] If multiple serious defects are detected, the system can suspend the equipment and prompt the operator to inspect it.

[0039] Specifically, the first base 211 of the unwinding device 21 is fixed to the left side of the frame 1 by ground support feet and is not locked to the frame 1, facilitating subsequent maintenance and replacement. The unwinding bracket 212 is welded from H-beams and is vertically fixed to the center of the base. The weight sensor 213 (model HBM PW15C3, range 0-500kg) is embedded in the mounting groove between the base and the bracket and is pre-tightened by four sets of M12 high-strength bolts to monitor the weight of the fabric roll in real time (accuracy ±0.1%FS). Two unwinding rollers 214 are connected to the unwinding bracket 212 by double-row tapered roller bearings, and the fourth drive motor 215 drives the unwinding rollers 214 to rotate through a gear synchronous belt mechanism. The weight display screen is embedded in the top of the unwinding bracket 212 and communicates with the weight sensor 213 and the main control system 4 through an RS485 interface to display the roll weight, remaining length (converted by weight-density), and unwinding speed in real time.

[0040] Specifically, in this embodiment, the unwinding bracket 212 is provided with two slidable baffle plates 216 along its length (radial direction of the unwinding roller 214). In actual use, the distance between the two sliding baffle plates 216 can be adjusted to accommodate fabrics of different widths, thus improving the compatibility of the fabric inspection machine.

[0041] Specifically, the fabric conveying system 2 further includes a tension control device 25 configured in conjunction with the unwinding device 21. The tension control device 25 includes a buffer space 251 disposed within the frame 1 and a tension detector 252 for detecting the tension of the fabric unwound by the unwinding device 21 within the buffer space 251. The buffer space 251 is disposed inside the frame 1, located between the unwinding device 21 and the subsequent conveying path. In this embodiment, it is designed as an S-shaped path (composed of multiple guide rollers 2223), and the fabric first enters this area after being unwound from the unwinding device 21. The function of the buffer space 251 is to absorb tension fluctuations during the fabric conveying process.

[0042] In this embodiment, the tension detector 252 is an ultrasonic analog photoelectric sensor installed in the buffer space 251. It measures the stacking height of the fabric in the buffer space 251. When the fabric is stacked too much or too little, it indicates that the tension is insufficient or too high. The detector transmits the collected tension data or height data to the main control system 4. The main control system 4 analyzes the current fabric status according to the preset tension threshold and generates control commands.

[0043] When tension detector 252 detects excessive fabric tension (or insufficient stacking height), indicating insufficient unwinding speed, the main control system 4 instructs the fourth drive motor 215 to increase its rotation speed, thereby increasing the unwinding speed and relieving tension. When tension detector 252 detects insufficient fabric tension (or excessive stacking height), indicating excessive unwinding speed, the main control system 4 instructs the fourth drive motor 215 to slow down its rotation speed, reducing the fabric supply and restoring normal tension. Through closed-loop feedback control, the rotation speed of the fourth drive motor 215 can respond to the signal from tension detector 252 in real time, ensuring that the fabric tension is always at its optimal state.

[0044] Specifically, the second base 230 of the winding device 23 is fixed to the right side of the frame 1 by a support foot. The winding bracket 231 is reciprocated on the second base 230 via a transverse drive mechanism 232. Two winding rollers 233 are rotatably mounted on the winding bracket 231. The fifth drive motor 234 is connected to the two winding rollers 233 via a gear synchronous belt mechanism.

[0045] The transverse drive mechanism 232 includes a roller bracket 2321 mounted on a second base 230, a roller component 2322 rotatably mounted on the roller bracket 2321, a rack 2323 mounted on the second base 230, a correction roller 2324 rotatably mounted on the roller component, and a sixth drive motor 2325 mounted on the correction roller 2324. The output end of the sixth drive motor 2325 is connected to a second gear 2326 meshing with the rack 2323. The sixth drive motor 2325 is electrically connected to a slotted photoelectric sensor 2327. The slotted photoelectric sensor 2327 is used to detect the offset of the fabric wound by the take-up roller 233 and trigger the sixth drive motor 2325 to drive the take-up bracket 231 to reciprocate along the radial direction of the take-up roller 233 for correction.

[0046] Specifically, the automatic fabric feeding device 22 includes a circulating fabric feeding mechanism 221 movably mounted on the frame 1, a fabric feeding conveying mechanism 222 connected to the circulating fabric feeding mechanism 221, and a fabric feeding drive mechanism 223 connected to the fabric feeding conveying mechanism 222. The circulating fabric feeding mechanism 221 includes a fabric clamping robot 224 for limiting one end of the fabric unwound by the unwinding device 21. The fabric feeding drive mechanism 223 drives the fabric clamping robot 224 to reciprocate between the unwinding device 21 and the winding device 23 via the fabric feeding conveying mechanism 222.

[0047] Specifically, the fabric feeding and conveying mechanism 222 includes multiple first gears 2221 rotatably mounted on the frame 1, an annular toothed belt 2222 meshing with the multiple first gears 2221, and a guide roller 2223 coaxially rotatable with the first gears 2221. The multiple first gears 2221 are spaced apart on the frame 1. The fabric feeding drive mechanism 223 includes a first drive motor connected to the first gears 2221. The fabric clamping robot 224 is connected to the annular toothed belt 2222. Driven by the first drive motor, the annular toothed belt 2222 moves in conjunction with the fabric clamping robot 224, reciprocating between the unwinding device 21 and the winding device 23 to form an S-shaped movement path. The fabric, limited by the fabric clamping robot 224, is moved by the fabric feeding drive mechanism 223 and the fabric feeding and conveying mechanism 222 to one end of the fabric unwound from the unwinding device 21 to the winding device 23 to achieve the fabric threading operation. This replaces the traditional manual fabric threading operation, increasing efficiency by more than 80%.

[0048] Specifically, the fabric clamping robot 224 includes a movable plate 2241 fixedly mounted on an annular toothed belt 2222, and a fabric clamping plate 2243 rotatably mounted on the movable plate 2241 via a torsion spring 2242. One end of the torsion spring 2242 is provided with a transmission bracket 2244. The fabric clamping robot 224 also includes a first cylinder 2245 mounted on the frame 1. The piston rod of the first cylinder 2245 is used to abut against the transmission bracket 2244. When the movable plate 2241 moves under the drive of the annular toothed belt 2222... When the first cylinder 2245 is activated, its piston rod contacts the transmission bracket 2244, thereby compressing the torsion spring 2242 and causing the clamping plate 2243 to move away from the moving plate 2241. At this time, the operator can move one end of the fabric on the unwinding device 21 between the moving plate 2241 and the clamping plate 2243. Subsequently, the first cylinder 2245 drives the piston rod to reset, and the torsion spring 2242 resets, causing the clamping plate 2243 to reset and clamp the fabric between the moving plate 2241 and the clamping plate 2243. Then, the fabric feeding drive mechanism 223 and the fabric feeding conveyor mechanism 222 start working, guiding one end of the fabric held by the clamping robot 224 to the take-up roller 233 of the take-up device 23. The operator only needs to remove one end of the fabric and wrap it around the take-up roller 233 to fix it.

[0049] Specifically, the robotic arm device 31 includes a first drive mechanism 311 and a second drive mechanism 312. The first drive mechanism 311 includes a first slide rail 3112 mounted on the frame 1, a first slide table 3113 slidably mounted on the first slide rail 3112, a first drag chain with one end mounted on the first slide table 3113, a first lead screw screwed to the first slide table 3113, and a second motor connected to the first lead screw. The other end of the first drag chain is connected to the first slide rail 3112. The second drive mechanism 312 includes a second slide rail 3112 mounted on the first slide table 3113. The first slide rail 3121, the second slide table 3122 slidably mounted on the second slide rail 3121, the second drag chain with one end mounted on the second slide table 3122, the second lead screw screwed to the second slide table 3122, and the third drive motor 3123 connected to the second lead screw, the other end of the second drag chain being connected to the second slide rail 3121; the labeling device 33 includes a suction nozzle 331 mounted on the second slide table 3122 and a cylinder connected to the suction nozzle 331, the moving direction of the first slide table 3113 and the moving direction of the second slide table 3122 being arranged intersecting.

[0050] Specifically, the first slide 3113 moves horizontally along the X-axis (travel 1.5m), and the second slide 3122 moves vertically along the Y-axis (travel 0.5m), achieving arbitrary trajectories within the plane through the linkage of the two axes. This robotic arm device 31, through its double-layer orthogonal slide structure and high-dynamic servo system, achieves automated labeling operations with a wide range, high precision, and multiple materials. Its combination of rigid guide rails and lightweight design balances speed and stability.

[0051] Specifically, the labeling device 33 further includes a label transfer mechanism 332. The label transfer mechanism 332 includes a label release wheel 3321 rotatably mounted on a first slide table 3113 via a mounting plate 3320 for releasing external labels, a label track 3322 cooperating with the label release wheel 3321, a label feeding roller 3323 rotatably mounted on one side of the label track 3322, and a paper take-up wheel 3324 rotatably mounted on the other side of the label track 3322. The labels released by the label release wheel 3321 are flattened onto the label track 3322 via the label feeding roller 3323. The air source module is used to drive the suction nozzle 331 to pick up the labels on the label track 3322 and, with the cooperation of the robotic arm device 31 and the detection device 32, affix them to the defective position of the fabric.

[0052] Specifically, the label track 3322 has a peeling guide slope (35° chamfer angle, surface roughness Ra≤0.8μm) at its end (opposite end to the take-up roller 3324). When the composite label tape (containing spaced labels and continuous backing paper) moves along the track under the drive of the label feeding roller 3323 and the take-up roller 3324, the backing paper and the label separate at the peeling guide slope. The backing paper, under the traction of the take-up roller 3324, moves down close to the guide slope and changes its direction of movement. The resultant force of its surface tension and the label adhesion force changes abruptly, causing shear stress at the bonding interface between the label and the backing paper. Due to the spacing of the labels (spacing L≥2mm), only the blank area of ​​the backing paper contacts the guide slope when it moves down. The label, without a support section, is suspended and automatically detaches from the backing paper due to elastic deformation. After separation, the label slides inertially for about 3-5mm at the end of the track and enters the pickup station, making it easy for the nozzle 331 to pick it up.

[0053] Specifically, the detection marking system 3 further includes an intelligent coder 34 disposed between the unwinding device 21 and the winding device 23. The intelligent coder 34 includes a lifting mechanism 341 disposed on the frame 1, a measuring wheel 342 disposed at the output end of the lifting mechanism 341 for contacting the fabric, a coder 343 coaxially connected to the measuring wheel 342, and a first position sensor 344 electrically coupled to the lifting mechanism 341. The first position sensor 344 is used to detect the position information of one end of the fabric conveyed by the automatic fabric feeding device 22 and trigger the lifting mechanism 341 to drive the measuring wheel 342 to move forward to contact the fabric. When the first position sensor 344 does not detect the fabric, it triggers the lifting mechanism 341 to drive the measuring wheel 342 to move in the reverse direction to reset.

[0054] The lifting mechanism 341 includes a second cylinder, which is electrically coupled to the first position sensor 344. When the sensor detects the arrival of the fabric, the second cylinder drives its piston rod to press down the measuring wheel 342 (covered with anti-slip rubber) to press against the fabric, rotating synchronously with the fabric's movement. Its coaxial code 343 converts the number of rotations into length data. After the fabric has moved completely, the sensor signal disappears, and the lifting mechanism 341 automatically raises the measuring wheel 342 to reset. This design ensures measurement accuracy (error ≤ 0.05%) and avoids manual intervention through contact pressure control and real-time data feedback, while also integrating a reset protection mechanism to prevent damage from idling.

[0055] In this embodiment, the arc-shaped guide table 351 consists of two guide rollers 2223, with the central axis of one guide roller 2223 located obliquely above the central axis of the other guide roller 2223. An anti-static coating is added to the surface of the arc-shaped guide table 351 to reduce micro-wrinkles caused by electrostatic adsorption of the fabric, thus improving detection accuracy. A first supplementary light 352 is located on one side of the arc-shaped guide table 351 and uses an adjustable-angle LED light source to provide uniform detection illumination, avoiding the impact of different fabric reflective properties on the accuracy of wrinkle recognition. The brightness of the supplementary light can be dynamically adjusted according to the fabric material (such as smooth silk, cotton linen, etc.) to adapt to different detection environments.

[0056] The first inspection camera 353 is installed opposite the first supplementary light 352, parallel to the curved fabric guide table 351. It is responsible for capturing real-time images of the fabric surface and uploading them to the main control system 4 for image processing algorithms to identify wrinkles and defects. The camera is a high-resolution industrial camera and integrates image processing algorithms such as edge enhancement, contrast optimization, and surface correction to ensure accurate identification of minute wrinkles and defects. The second position sensor 354 is installed on the other side of the curved fabric guide table 351 to detect the real-time position of the fabric in the inspection area and is electrically integrated with the main control system 4. When the fabric enters the inspection area, the sensor triggers the first inspection camera 353 to start shooting, simultaneously detecting the fabric's tension and displacement to ensure the camera captures complete data on wrinkles and defects.

[0057] Specifically, the fabric conveying system 2 further includes a fabric flattening device 26, which includes a flattening roller 261 rotatably mounted on the frame 1 and two flattening components 262 spirally wound around the flattening roller 261, the spiral directions of the two flattening components 262 being opposite. In this embodiment, the flattening roller 261 is driven by a separate seventh drive motor 263, which is electrically connected to the first detection camera 353.

[0058] When the fabric enters the fabric conveying system 2 from the unwinding device 21, it passes through the automatic fabric threading device 22 and arrives at the wrinkle detection device. The second position sensor 354 detects that the fabric has reached the arc-shaped guide table 351 and sends a signal to the main control system 4, triggering the first supplementary light 352 and the first detection camera 353 to start. The first supplementary light 352 provides uniform illumination, and the first detection camera 353 captures images of the fabric surface and identifies wrinkle areas using an AI algorithm. After identifying wrinkle defects, the main control system 4 adjusts the flattening force of the fabric flattening device 26 according to the severity of the wrinkles, and controls the robotic arm device 31 and the labeling device 33 to mark the defect locations according to the defect locations. If the fabric tension is abnormal, the main control system 4 can optimize the fabric conveying tension by adjusting the speed of the fourth drive motor 215 of the unwinding device 21 or the speed of the fifth drive motor 234 of the winding device 23. After processing, the fabric continues to enter the defect detection system for subsequent detection and labeling.

[0059] Uniform illumination is provided by the curved guide table 351, which, combined with AI image analysis, improves the accuracy of wrinkle and defect identification. The brightness of the supplementary light, the camera focal length, and the angle of the curved guide table 351 can all be dynamically adjusted, making it suitable for fabrics of different thicknesses and materials. After wrinkles are detected, the flattening force of the fabric flattening device 26 is automatically adjusted, making the fabric flatter when it enters the defect detection stage, thus improving the quality of subsequent inspection and winding.

[0060] Specifically, a plurality of tension rollers 24 (in this embodiment, the tension rollers 24 are guide rollers 2223) are rotatably arranged on the frame 1 between the unwinding device 21 and the winding device 23. The detection device 32 includes a detection platform 321 located between two adjacent tension rollers 24, a second supplementary light 322 disposed on the detection platform 321, a lampshade 3221 covering the detection platform 321 and the second supplementary light 322, and a second detection camera 323 disposed on the detection platform 321. The second detection camera 323 is electrically connected to the robotic arm device 31 and the labeling device 33 via the main control system 4. The lampshade 3221 integrates a control panel electrically connected to the second supplementary light 322 for adjusting parameters such as the brightness and illumination angle of the light.

[0061] The second detection camera 323 is used to take secondary images of the fabric and upload them to the main control system 4 for analysis to ensure detection accuracy.

[0062] Tension rollers 24 are arranged on the frame 1 and installed between the unwinding device 21 and the rewinding device 23. Their main function is to stabilize the fabric tension, keeping the fabric flat within the defect detection area and reducing detection errors caused by fabric swaying or slack. The arrangement of multiple tension rollers 24 ensures that the fabric does not wrinkle or stretch during transmission, guaranteeing detection accuracy. The detection platform 321 is positioned between two adjacent tension rollers 24, and its surface is made of a high-reflectivity material or an optical diffuse reflection coating to optimize the light source reflection effect and make the light distribution within the detection area more uniform. When the fabric passes over the detection platform 321, the platform provides stable background contrast, improving detection accuracy.

[0063] The second supplementary light 322 is installed above the inspection platform 321 to provide a stable light source and improve the imaging quality of the inspection camera. The second supplementary light 322 uses a high-brightness LED light source and can automatically adjust its brightness according to the fabric color and material to ensure uniformity of inspection. The illumination angle of the light source has been optically optimized to avoid reflections or shadows caused by direct light. The lamp cover 3221 is installed above the inspection platform 321 and the supplementary light to control the illumination range of the light source, reduce ambient light interference, and improve inspection stability. The interior of the lamp cover 3221 uses an anti-reflective coating to ensure uniform light distribution within the inspection area.

[0064] The second inspection camera 323 is mounted above the inspection platform 321 to photograph the fabric surface and identify defects using high-resolution image processing technology. The camera, equipped with an industrial-grade CMOS sensor, can capture details of the fabric surface in real time and analyze defect types (such as broken yarns, color differences, oil stains, and damage) using AI algorithms. The camera is connected to the main control system 4, transmitting defect information to the robotic arm device 31 and the labeling device 33 for marking.

[0065] Specifically, after the fabric processed by the wrinkle detection device is transferred to the detection area, its tension is adjusted by the tension roller 24, and it smoothly passes through the detection platform 321. A uniform light source is provided by the second supplementary light 322 to ensure even illumination of the fabric surface, free from shadows or glare. The second detection camera 323 captures images of the fabric surface and transmits the image data to the main control system 4. The main control system 4 then analyzes the images, identifies the defect types, and sends instructions to the robotic arm device 31. The robotic arm device 31 drives the labeling device 33 to affix labels to the detected defect locations, completing the automatic labeling process. The detection data can be uploaded to the AI ​​collaborative system for sharing with the supply chain, improving quality control and production management efficiency.

[0066] The intelligent fabric inspection machine of this invention achieves efficient fabric inspection, intelligent analysis, and automatic marking through the coordinated operation of fabric conveying, automatic labeling, and intelligent winding systems. Its workflow is as follows: First, the fabric unwinding device 21 carries and releases the fabric, ensuring its stable entry into the fabric inspection process. A weight sensor 213 monitors the weight of the fabric roll in real time and communicates with the main control system 4 via an RS485 interface to calculate the remaining fabric length and unwinding speed. The tension control device 25 incorporates a buffer space 251 within the frame 1, forming an S-shaped path composed of multiple guide rollers 2223, used to buffer fabric tension fluctuations and prevent wrinkles or breakage during fabric transport. An ultrasonic sensor within the buffer space 251 monitors the fabric stacking height and feeds it back to the main control system 4. If the tension is too high or the fabric supply is insufficient, the main control system 4 controls the fourth drive motor 215 to accelerate the unwinding speed; if the tension is too low or the fabric stacking is excessive, the unwinding speed is slowed down to ensure the fabric transport tension remains optimal.

[0067] Upon entering the inspection area, the straight stripes of light generated by the first supplementary light lamp 352 illuminate the fabric, forming a uniform light band on the fabric surface to enhance the visibility of fabric surface details. The first inspection camera 353 employs a high-resolution CMOS sensor and is equipped with an industrial-grade lens, capable of accurately capturing images of the fabric surface after the straight stripes of light have illuminated it. When the fabric has defects (such as broken yarns, holes, color differences, or oil stains), it will affect the reflectivity of the straight stripes of light, thus appearing as distortion, missing parts, or color changes in the light band in the camera image.

[0068] After receiving images from the inspection camera, the main control system 4 uses built-in deep learning algorithms (such as CNN convolutional neural networks) to classify the types of defects and automatically triggers marking or alarm mechanisms based on the severity of the defects.

[0069] An automated fabric feeding device 22 replaces manual operation, ensuring the fabric is automatically guided to the winding device 23. A fabric clamping robot 224, driven by a cylinder, grips the fabric and transmits it to the winding device 23 via a toothed belt 2222. The fabric feeding drive mechanism 223 drives the fabric clamping robot 224 along an S-shaped trajectory, transferring the fabric from the unwinding device 21 to the winding device 23. Finally, the operator manually secures the fabric to the winding roller 233. This process reduces manual intervention, improves the automation level of fabric feeding, and increases fabric feeding efficiency by over 80%.

[0070] When the fabric enters the secondary inspection area, the second inspection camera (323) of the inspection device 32 starts working. The fabric is transported by the tension roller 24 to ensure that the fabric remains flat on the inspection platform 321, avoiding swaying or tension changes that could affect the inspection accuracy. The second supplementary light 322 provides a uniform light source, optimizes image quality, and can automatically adjust the brightness according to the fabric material. The second inspection camera 323 photographs the fabric surface and analyzes defects, including broken yarns, color differences, oil stains, and damage, using an AI algorithm. The AI ​​algorithm is trained based on manual fabric inspection standards and can accurately identify different types of defects, sending defect location information to the main control system 4. The main control system 4 calculates the defect coordinates and instructs the robotic arm device 31 to accurately locate the defect. The secondary inspection system further ensures the accurate marking of defect locations and improves the quality of fabric inspection.

[0071] After receiving the defect location information, the labeling device 33 automatically performs the marking operation. The robotic arm device 31 adopts a double-layer slide structure, combined with a high-dynamic servo system, to achieve precise positioning on the X and Y axes. The labeling mechanism automatically peels off the label through a peeling guide ramp, and the label is picked up by a pneumatic suction nozzle and applied to the defect area. The labeling process incorporates AI detection data to ensure accurate label placement and clear marking, improving the efficiency of subsequent production processes.

[0072] The winding device 23 ensures the fabric is neatly wound and performs real-time correction. A slotted photoelectric sensor 2327 detects whether the fabric shifts during winding and triggers a servo motor to drive the winding bracket 231 to finely adjust its position radially, ensuring the fabric is neatly aligned. The winding roller 233 is driven by a fifth drive motor 234 to ensure the fabric is wound with constant tension. A meter counter 342 records the fabric length, and the data is converted by a code counter 343 and uploaded to the AI ​​collaborative system for accurate storage of production data.

[0073] This invention achieves a highly efficient, high-precision, and standardized fabric inspection process through technologies such as automated fabric transport, automatic labeling, and intelligent winding. The entire system operates collaboratively, eliminating the need for manual intervention throughout the entire fabric unwinding and winding process, significantly reducing human error, improving production consistency, and providing the textile industry with an intelligent quality control solution.

[0074] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An intelligent fabric inspection machine, characterized in that: It includes a frame (1), a fabric conveying system (2), a detection and marking system (3), and a main control system (4), wherein the fabric conveying system (2) and the detection and marking system (3) are electrically connected to the main control system (4); The fabric conveying system (2) includes an unwinding device (21) at one end of the frame (1), a winding device (23) at the other end of the frame (1), and a fabric guiding mechanism located between the unwinding device (21) and the winding device (23), and an automatic fabric threading device (22) for conveying the fabric carried by the unwinding device (21) along the fabric guiding mechanism to the winding device (23) for winding. The detection and marking system (3) includes a robotic arm device (31), a labeling device (33), and a detection device (32). The detection device (32) is used to detect the location of defects on the fabric between the unwinding device (21) and the winding device (23). The labeling device (33) is driven by the robotic arm device (31) to label the location of defects on the fabric. The robotic arm device (31) includes a first drive mechanism (311) and a second drive mechanism (312). The first drive mechanism (311) includes a first slide rail (3112) mounted on the frame (1), a first slide table (3113) slidably mounted on the first slide rail (3112), and a second drive motor connected to the first slide table (3113). The second drive mechanism (312) includes a second slide rail (3121) mounted on the first slide table (3113), a second slide table (3122) slidably mounted on the second slide rail (3121), and a third drive motor (3123) connected to the second slide table (3122). The moving direction of the first slide table (3113) is intersected with the moving direction of the second slide table (3122), and the moving path of the fabric is intersected with the moving direction of the first slide table (3113) and the moving direction of the second slide table (3122). The detection device (32) includes an arc-shaped guide table (351) set on the frame (1), a first supplementary light (352) set on one side of the arc-shaped guide table (351), and a first detection camera (353) set in cooperation with the first supplementary light (352). The arc-shaped guide table (351) has an outwardly convex smooth arc surface for supporting the fabric guided by the guide mechanism. The first supplementary light (352) is used to emit straight strips of light that illuminate the outwardly convex smooth arc surface. The first detection camera (353) is used to take pictures of the fabric supported by the outwardly convex smooth arc surface illuminated by the straight strips of light. The main control system (4) receives the images captured by the first detection camera (353) and detects and analyzes whether the fabric has defects. The automatic fabric feeding device (22) includes a circulating fabric feeding mechanism (221) movably mounted on the frame (1), a fabric feeding conveyor mechanism (222) connected to the circulating fabric feeding mechanism (221), and a fabric feeding drive mechanism (223) connected to the fabric feeding conveyor mechanism (222); the circulating fabric feeding mechanism (221) includes a fabric clamping manipulator (224) for limiting the external fabric, and the fabric feeding drive mechanism (223) drives the fabric clamping manipulator (224) to reciprocate between the unwinding device (21) and the winding device (23) via the fabric feeding conveyor mechanism (222); The fabric feeding and conveying mechanism (222) includes a plurality of first gears (2221) rotatably mounted on the frame (1) and an annular toothed belt (2222) meshing with the plurality of first gears (2221). The fabric feeding drive mechanism (223) is a first drive motor connected to the first gears (2221). The fabric clamping manipulator (224) is connected to the annular toothed belt (2222). The fabric, which is limited by the fabric clamping manipulator (224), moves back and forth between the unwinding device (21) and the winding device (23) under the action of the fabric feeding drive mechanism (223) and the fabric feeding and conveying mechanism (222) to realize the fabric threading operation. The fabric conveying system (2) also includes a tension control device (25) configured in conjunction with the unwinding device (21). The tension control device (25) includes a buffer space (251) configured in the frame (1) and a tension detector (252) for detecting the tension of the fabric after unwinding by the unwinding device (21) in the buffer space (251). The tension detector (252) is electrically connected to the main control system (4) via a fifth drive motor (234). The tension detector (252) is used to detect the tension of the fabric in the buffer space (251) or the height of the fabric pile in the buffer space (251). The tension detector (252) triggers the main control system (4) to adjust the rotation speed of the unwinding roller (214) driven by the fifth drive motor (234) based on the parameter data of the detected fabric tension or pile height, thereby adjusting the tension of the fabric. The fabric conveying system (2) further includes a fabric flattening device (26), which includes a flattening roller (261) rotatably mounted on the frame (1) and two flattening components (262) spirally wound around the flattening roller (261), the spiral directions of the two flattening components (262) being opposite. The detection marking system (3) further includes an intelligent coder (34) located between the unwinding device (21) and the winding device (23). The intelligent coder (34) includes a lifting mechanism (341) located on the frame (1), a measuring wheel (342) located at the output end of the lifting mechanism (341) for contacting the fabric, a coder (343) coaxially connected to the measuring wheel (342), and a first position sensor (344) electrically connected to the lifting mechanism (341). The first position sensor (344) is used to detect the position information of the fabric transferred by the unwinding automatic fabric feeding device (22) and trigger the lifting mechanism (341) to drive the measuring wheel (342) to move forward to contact the fabric. When the first position sensor (344) does not detect the fabric, it triggers the lifting mechanism (341) to drive the measuring wheel (342) to move backward to reset.

2. The intelligent fabric inspection machine according to claim 1, characterized in that: The labeling device (33) includes a suction nozzle (331) disposed at the end of the robotic arm device (31), an air source module connected to the suction nozzle (331), and a label transfer mechanism (332) for conveying labels. The label transfer mechanism (332) includes a label release wheel (3321) rotatably disposed for unwinding external labels, a label track (3322) cooperating with the label release wheel (3321), a label feeding roller (3323) rotatably disposed on one side of the label track (3322), and a paper take-up wheel (3324) rotatably disposed on the other side of the label track (3322). The labels unwound by the label release wheel (3321) are flattened onto the label track (3322) via the label feeding roller (3323). The air source module is used to drive the suction nozzle (331) to pick up the labels on the label track (3322) and, with the cooperation of the robotic arm device (31) and the detection device (32), affix them to the defective position of the fabric.

3. The intelligent fabric inspection machine according to claim 1, characterized in that: The guiding mechanism has multiple tension rollers (24) rotatably mounted on the frame (1) and located between the unwinding device (21) and the winding device (23). The detection device (32) also includes a detection platform (321) located between two adjacent tension rollers (24), a second supplementary light (322) mounted on the detection platform (321), and a second detection camera (323) mounted above the detection platform (321). The second detection camera (323) is electrically connected to the robotic arm device (31) and the labeling device (33) via the main control system (4).

4. The intelligent fabric inspection machine according to claim 1, characterized in that: The unwinding device (21) includes a first base (211) disposed on the other side of the frame (1), an unwinding bracket (212) disposed on the first base (211), a weight sensor (213) disposed between the first base (211) and the unwinding bracket (212), an unwinding roller (214) rotatably disposed on the unwinding bracket (212) and used to carry the outer fabric roll, and a fifth drive motor (234) connected to the unwinding roller (214). The unwinding device (21) also includes a weight display screen electrically coupled to the weight sensor (213), which is used to display the weight data of the outer fabric on the unwinding roller (214) detected by the weight sensor (213).

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