Defect inspection platform for textile fabric
By combining a multi-dimensional light source system and a correction frame, along with industrial cameras and deep learning models, efficient and accurate identification and automatic marking of textile defects have been achieved. This solves the problems of single light source and insufficient correction in existing equipment, and improves detection efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUBEI HUAWEI TEXTILE TECHNOLOGY CO LTD
- Filing Date
- 2026-03-13
- Publication Date
- 2026-05-29
Smart Images
Figure CN122108941A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of textile fabric testing equipment technology, specifically a defect inspection platform for textile fabrics. Background Technology
[0002] Textile fabrics are the core basic materials of the textile industry. They are made through processes such as spinning, weaving, dyeing and finishing. According to the weaving method, they can be divided into three categories: woven, knitted and non-woven fabrics. The raw materials include natural fibers such as cotton, linen, silk and wool, as well as chemical fibers such as polyester, nylon and spandex. Different fiber characteristics can also be combined through blending. Different fabrics have different properties. Cotton and linen are breathable and skin-friendly, chemical fibers are wear-resistant and stiff, and spandex is highly elastic and easy to stretch. After being optimized by processes such as printing and setting, they are widely used in many fields such as clothing production, home textile decoration, and industrial textiles.
[0003] Textile fabric defect inspection technology is a core technology for textile quality control. It is used to detect various defects on the fabric surface, such as holes, skipped yarns, stains, weft skew, and color spots, to ensure the quality of the fabric leaving the factory. This technology is divided into two categories: manual visual inspection and intelligent detection. Intelligent detection relies on machine vision, image recognition, and deep learning algorithms, combined with high-definition cameras and light source systems. It can quickly scan the fabric, accurately identify defects, and classify and grade them. It is adapted to the continuous and high-speed inspection needs of textile production lines and is a key quality control means for modern textile production.
[0004] In the prior art, such as the textile fabric defect inspection equipment with application number 201920337981.7, the technical solution is as follows: it includes a horizontally arranged box body, with outer shells welded to both ends of the box body, and the outer shells at both ends are connected. The fabric to be inspected passes through the outer shells at both ends. A roller for supporting the fabric is arranged in each outer shell. A shaft is inserted at the center of the roller. The two ends of the shaft are welded and fixed to the outer shell. Multiple bearings are fitted between the roller and the shaft. A diffuser is arranged inside the box body. The fabric to be inspected passes over the diffuser. A plate is installed inside the box body at the lower end of the diffuser. Multiple LED tubes are screwed to the top of the plate. An inspection port is opened at the front end of the box body.
[0005] However, existing conventional visual inspection platforms use a single light source for illumination, which has a weak ability to identify low-contrast defects, such as slight yarn unevenness and light-colored stains, and is prone to false detections; they lack precise positioning and marking functions, requiring manual relocation of defect locations after inspection, which is inconvenient for subsequent rework; and the lack of a correction structure during fabric transportation leads to inaccurate defect location after inspection.
[0006] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.
[0007] To address the aforementioned issues, an innovative design was developed based on the existing fabric defect inspection equipment. Summary of the Invention
[0008] The purpose of this invention is to provide a defect inspection platform for textile fabrics to solve the problems mentioned in the background art, such as single light source illumination, lack of marking function, and lack of correction function.
[0009] To achieve the above objectives, the present invention provides the following technical solution:
[0010] A defect inspection platform for textile fabrics includes an inspection frame with four casters at the bottom and a door on the left side. An operating table is fixedly mounted on the front of the frame, with an inspection control display screen above it. Rotating frames are located on the front and rear sides of the left side of the frame, with two first transmission rollers rotatably connected between them. A second transmission roller is rotatably connected to the right side of the frame. Correction frames are fixedly mounted on the front and rear sides of the lower left side of the frame, with sliding blocks slidably connected above them, and correction rollers connecting the front and rear sliding blocks. An upper support is fixedly mounted inside the frame, with a front light source, a side light source, and an industrial camera at its bottom. A lower support is fixedly mounted inside the frame, with a front light source and a side light source on its upper surface. A drive box is fixedly mounted on the right side of the frame, with a robot movably mounted below it, and a marking structure connected to the robot's end effector.
[0011] Preferably, a fixed frame is fixedly installed on both the front and rear sides of the left side of the inspection frame, and a drive motor is fixedly installed on the front side of the fixed frame. The output end of the drive motor is connected to the rotating frame on the front side of the inspection frame, and the rotating frame on the rear side of the inspection frame is rotatably connected to the front side of the fixed frame on the rear side of the inspection frame.
[0012] By adopting the above technical solution, the drive motor on the fixed frame on the left side of the inspection frame directly drives the rotating frame and the first transmission roller to operate, which improves the stability of the fabric conveying speed. The angle of the first transmission roller is adjustable, which avoids pulling and wrinkling of the fabric during conveying, reduces the damage rate, and reduces manual intervention, operation intensity and human error.
[0013] Preferably, an electric telescopic machine is obliquely installed on the upper surface of the straightening frame, and a moving block is connected to the output end of the electric telescopic machine. Two first sliding grooves are opened on the upper surface of the straightening frame, and the bottom protrusion of the moving block is slidably connected to the first sliding groove.
[0014] Using the above technical solution, the electric telescopic machine installed obliquely on the correction frame precisely drives the moving block to slide along the first chute, improving the response speed and shortening the correction time. It can deal with the problem of fabric deviation in real time. The first chute forms a stable guide for the moving block, avoiding deviation or jamming during the correction process, ensuring that the fabric is always transported in the center, and providing a stable foundation for subsequent defect detection and positioning.
[0015] Preferably, an installation block is hinged to the upper surface of the movable block, and a correction roller is fixedly installed at the other end of the installation block.
[0016] Using the above technical solution, the moving block and the mounting block adopt a hinged design, which, together with the fixedly installed correction roller, allows the correction roller to adapt to changes in fabric tension and conveying angle, with a flexible adjustment range of ±3°, improving adaptability. The hinged structure can buffer the impact force during fabric conveying, avoiding indentations or damage to the fabric surface caused by rigid compression, reducing the indentation rate, while ensuring smooth correction action without affecting the fabric conveying speed, thus balancing the correction effect and fabric quality.
[0017] Preferably, a positive light source is fixedly installed at the bottom center of the upper support, and the positive light source is a high-brightness LED surface light source with a color temperature of 5000-6500K. Four side light sources are installed at the bottom corner of the upper support, and the angle between the side light sources and the surface of the textile fabric is 30°-45°.
[0018] Using the above technical solution, the high-brightness LED orthogonal light source at the bottom center of the upper bracket provides uniform and sufficient main illumination, while the four side light sources at the corners illuminate at an angle of 30°-45° to enhance the contrast between defects and the fabric surface. Compared with ordinary light sources, the clarity of defect imaging is improved. This light source combination can fully cover the detection area, eliminate shadows and blind spots, and improve the recognition rate of low-contrast defects such as slight yarn unevenness and small color spots, greatly reducing the risk of missed detection and adapting to the detection of textile fabrics of different materials and thicknesses.
[0019] Preferably, a frontal light source is provided in the middle of the upper surface of the lower bracket, and four side light sources are provided at the corners of the upper surface of the lower bracket. Both the frontal and side light sources of the lower bracket are diffused LED light sources.
[0020] Using the above technical solution, both the direct and side light sources on the lower support use diffused LED light sources to transmit light through the back of the fabric, which can effectively reduce the interference of reflection on the fabric surface and reduce the reflectivity. It is especially suitable for the detection of light-colored and smooth fabrics. The light sources on the upper and lower supports work together to form a three-dimensional lighting effect, so that defects on both sides of the fabric can be clearly presented, the defect detection rate is improved, and the defect identification of thin, translucent fabrics is more accurate. It avoids the problem of image blurring caused by light penetration and ensures the comprehensiveness of the detection.
[0021] Preferably, the bottom of the upper support is equipped with four industrial cameras, which are used to collect images of textile defects and transmit them to the inspection control display screen. The inspection control display screen is trained with 100,000 samples of various types of fabric defects to form a deep learning defect recognition model.
[0022] Using the above technical solution, the four industrial cameras at the bottom of the upper bracket can capture images of the fabric surface from all directions without blind spots. After the images are transmitted to the inspection control display screen, they are analyzed by a deep learning model trained with 100,000 defect samples. This improves the accuracy of defect recognition and reduces the false detection rate. The model can identify a variety of defects such as holes, skipped stitches, and stains. Compared with traditional algorithms, it can identify more types of defects and is compatible with different fabrics such as cotton, linen, and chemical fibers. The recognition speed is fast, which greatly improves inspection efficiency and meets the needs of continuous inspection on the production line.
[0023] Preferably, the first and second transmission rollers record the fabric conveying length in real time by installing rotary encoders, and the encoder data is collected synchronously when the industrial camera captures images. Combined with the lateral distribution position of the camera, the defect coordinates are accurately located by coordinate conversion and transmitted to the inspection control display screen.
[0024] Using the above technical solution, the rotary encoders on the first and second transmission rollers record the fabric conveying length in real time. The industrial camera collects this data simultaneously when taking pictures. Combined with the lateral distribution position of the camera, the coordinates of the defects are accurately located through coordinate conversion, thus improving the positioning accuracy. The accurate coordinates are transmitted to the inspection control display screen in real time, providing a precise basis for robot marking, improving the efficiency of defect finding, shortening the finding time, and significantly reducing the time cost of subsequent rework.
[0025] Preferably, a servo motor is fixedly installed on the front side of the drive box, and a threaded rod is connected to the rear output end of the servo motor. A slider is threadedly connected to the outer side of the threaded rod. A second sliding groove is provided at the bottom of the drive box, and the slider is slidably connected to the second sliding groove.
[0026] Using the above technical solution, the servo motor on the front of the drive box drives the threaded rod to rotate, which in turn drives the slider to slide along the second slide groove. The robot's lateral movement accuracy reaches ±0.01mm, and the smoothness of movement is improved. This transmission structure enables the robot to move smoothly and accurately, ensuring that the marking structure can quickly respond to the defect coordinates and align with the defect position in a timely manner. The marking deviation is reduced, ensuring the marking accuracy. At the same time, the servo motor control is flexible and adaptable to the defect marking needs of fabrics of different widths.
[0027] Preferably, a robot is fixedly installed at the bottom of the slider, and a marking tube is fixedly installed at the output end of the robot. The marking tube contains washable ink, an ink filling cap is provided at the top of the marking tube, and a marking pen is provided at the bottom of the marking tube by means of a solenoid valve.
[0028] Using the above technical solution, a marking cylinder is installed at the robot end of the slider. The marking cylinder contains washable ink and a marking pen controlled by a solenoid valve, which improves the accuracy of defect marking, with a marking deviation of ≤±0.2mm. The washable ink avoids contaminating the fabric and meets the needs of subsequent processing. The ink filling cap at the top of the marking cylinder makes it easy to replenish consumables, improves maintenance convenience, reduces equipment downtime, and ensures continuous operation of the production line.
[0029] Compared with the prior art, the beneficial effects of the present invention are: this defect inspection platform for textile fabrics,
[0030] 1. Multi-dimensional light source synergy enhances the comprehensiveness of defect identification. It adopts a multi-dimensional lighting system of "high-brightness orthogonal light source on the upper bracket + side light source + diffuse light source on the lower bracket". The 5000-6500K color temperature orthogonal light source ensures basic lighting, the 30-45° side light source enhances defect contrast, and the diffuse light source eliminates reflection interference. Compared with traditional single light source, the low contrast defect identification rate is improved. The missed detection rate of minor yarn unevenness, light-colored stains, etc. is ≤0.1%, which is suitable for defect detection of fabrics of different thicknesses and materials.
[0031] 2. Automatic correction and precise positioning ensure accurate detection. The electric telescopic machine drives the correction roller to adjust the fabric position in real time, with a correction accuracy of ±0.05mm, avoiding positioning errors caused by fabric offset. The rotary encoder records the conveying length and, combined with the lateral position data of the industrial camera, achieves precise positioning of defects within ±0.2mm through coordinate conversion, improving positioning accuracy and providing a precise basis for subsequent marking and rework.
[0032] 3. Intelligent recognition and automatic marking improve detection efficiency. After the industrial camera captures images, they are processed by a deep learning model trained with 100,000 defect samples, which improves the accuracy and efficiency of defect recognition. The robot drives the marking pen to automatically mark defects with a marking deviation of ≤±0.2mm, which is more efficient than manual marking, avoids manual secondary search, and greatly reduces labor costs.
[0033] 4. Stable conveying and flexible protection ensure fabric quality. The drive motor drives the transmission roller to achieve stable conveying with a speed fluctuation of ≤±0.1m / min, avoiding fabric tearing and damage. The hinged structure of the correction roller adapts to tension changes, and the diffused light source reduces reflection interference. There is no rigid compression throughout the process, reducing fabric indentation rate and damage rate. The fabric quality is not affected after inspection and no additional repair is required.
[0034] 5. Flexible and easy to maintain, adaptable to multiple scenarios. The universal wheels at the bottom of the inspection frame facilitate equipment movement and adapt to different workstation layouts in the workshop. The marking tube has a washable ink and an ink refill cap design, making consumable replenishment convenient. The light source and camera are modularly installed, shortening maintenance time and reducing equipment operation and maintenance costs. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the external structure of the present invention;
[0036] Figure 2 This is a schematic diagram of the overall right-side structure of the present invention;
[0037] Figure 3 This is a schematic diagram of the first transmission roller structure of the present invention;
[0038] Figure 4 This is a schematic diagram of the corrective roller structure of the present invention;
[0039] Figure 5 This is a schematic diagram of the alignment frame structure of the present invention;
[0040] Figure 6 This is a schematic diagram of the upper support structure of the present invention from below;
[0041] Figure 7 This is a top view of the lower support structure of the present invention;
[0042] Figure 8 This is a schematic diagram of the drive box structure of the present invention;
[0043] Figure 9 This is a schematic diagram of the robot connection structure of the present invention;
[0044] Figure 10 This is a schematic diagram of the marking cylinder structure of the present invention.
[0045] In the diagram: 1. Inspection frame; 2. Casters; 3. Door; 4. Inspection control display screen; 5. Operating table; 6. Fixed frame; 7. Drive motor; 8. Rotating frame; 9. First transmission roller; 10. Correction frame; 11. Electric telescopic mechanism; 12. Moving block; 13. First chute; 14. Mounting block; 15. Correction roller; 16. Upper support; 17. Orthogonal light source; 18. Side light source; 19. Industrial camera; 20. Lower support; 21. Second transmission roller; 22. Drive box; 23. Servo motor; 24. Threaded rod; 25. Slider; 26. Second chute; 27. Robot; 28. Marking cylinder; 29. Ink filling cap; 30. Marking pen. Detailed Implementation
[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0047] Please see Figure 1-10 The present invention provides a technical solution:
[0048] A defect inspection platform for textile fabrics includes an inspection frame 1. The bottom of the inspection frame 1 is equipped with four casters 2, and a door 3 is located on the left side of the inspection frame 1. An operating table 5 is fixedly installed on the front side of the inspection frame 1, and an inspection control display screen 4 is installed above the operating table 5. Rotating frames 8 are located on the front and rear sides of the left side of the inspection frame 1, and two first drive rollers 9 are rotatably connected between the rotating frames 8. A second drive roller 21 is rotatably connected to the right side of the inspection frame 1. Correction frames 10 are fixedly installed on the front and rear sides of the lower left side of the inspection frame 1, and a sliding frame 10 is mounted above the correction frame 10. The inspection frame 1 is connected to a movable block 12, and a correction roller 15 is connected between the front and rear movable blocks 12. An upper support 16 is fixedly installed inside the upper part of the inspection frame 1, and a positive light source 17, a side light source 18 and an industrial camera 19 are provided at the bottom of the upper support 16. A lower support 20 is fixedly installed inside the lower part of the inspection frame 1, and a positive light source 17 and a side light source 18 are provided on the upper surface of the lower support 20. A drive box 22 is fixedly installed on the right side of the inspection frame 1, and a robot 27 is movably installed below the drive box 22. A marking structure is connected and installed at the end of the robot 27.
[0049] The left and front sides of the inspection frame 1 are fixedly equipped with fixed frames 6, and the front side of the fixed frame 6 is fixedly equipped with a drive motor 7. The output end of the drive motor 7 is connected to the rotating frame 8 on the front side of the inspection frame 1, and the rotating frame 8 on the rear side of the inspection frame 1 is rotatably connected to the front side of the fixed frame 6 on the rear side of the inspection frame 1. The drive motor 7 on the left fixed frame 6 of the inspection frame 1 directly drives the rotating frame 8 and the first transmission roller 9 to operate, thereby improving the stability of the fabric conveying speed. The angle of the first transmission roller 9 is adjustable, which avoids the pulling and wrinkling of the fabric during conveying, reduces the damage rate, and reduces manual intervention, operation intensity and human error.
[0050] The upper surface of the correction frame 10 is equipped with an electric telescopic mechanism 11 mounted obliquely, and the output end of each electric telescopic mechanism 11 is connected to a moving block 12. Two first sliding grooves 13 are formed on the upper surface of the correction frame 10, and the bottom protrusion of the moving block 12 is slidably connected to the first sliding groove 13. An mounting block 14 is hinged to the upper surface of the moving block 12, and a correction roller 15 is fixedly mounted at the other end of the mounting block 14. The electric telescopic mechanism 11 mounted obliquely on the correction frame 10 precisely drives the moving block 12 to slide along the first sliding groove 13, improving response speed and shortening correction time. It can address fabric deviation problems in real time. The first sliding groove 13... Block 12 forms a stable guide, avoiding deviation or jamming during the correction process, ensuring that the fabric is always conveyed in the center, and providing a stable foundation for subsequent defect detection and positioning. The moving block 12 and the mounting block 14 adopt a hinged design, which, together with the fixedly installed correction roller 15, allows the correction roller 15 to adapt to changes in fabric tension and conveying angle, with a flexible adjustment range of ±3°, improving adaptability. The hinged structure can buffer the impact force during fabric conveying, avoiding indentations or damage to the fabric surface caused by rigid compression, reducing the indentation rate, while ensuring smooth correction action without affecting the fabric conveying speed, thus balancing the correction effect and fabric quality.
[0051] A direct-light source 17 is fixedly installed at the center of the bottom of the upper support 16. The direct-light source 17 is a high-brightness LED surface light source with a color temperature of 5000-6500K. Four side-light sources 18 are installed at the corners of the bottom of the upper support 16, with the angle between the side-light sources 18 and the surface of the textile fabric being 30°-45°. A direct-light source 17 is installed at the center of the upper surface of the lower support 20, and four side-light sources 18 are installed at the corners of the upper surface of the lower support 20. Both the direct-light source 17 and the side-light sources 18 of the lower support 20 are diffused LED light sources. The high-brightness LED direct-light source 17 at the center of the bottom of the upper support 16 provides uniform and sufficient main lighting, while the four side-light sources 18 at the corners illuminate at an angle of 30°-45°, enhancing the contrast between defects and the fabric surface. Compared to ordinary light sources, the clarity of defect imaging is improved. This light source combination can fully cover the detection area, eliminating shadows and blind spots, and improving the recognition rate of low-contrast defects such as slight yarn unevenness and small color spots, significantly reducing the risk of missed detection. It is suitable for the detection of textile fabrics of different materials and thicknesses. The orthophoto light source 17 and the side light source 18 on the lower bracket 20 both use diffused LED light sources to transmit light through the back of the fabric, which can effectively reduce the interference of reflection on the fabric surface and reduce the reflectivity. It is especially suitable for the detection of light-colored and smooth fabrics. The light sources of the upper bracket 16 and the lower bracket 20 work together to form a three-dimensional lighting effect, so that defects on both sides of the fabric can be clearly presented, improving the defect detection rate. It is more accurate in identifying defects in thin, translucent fabrics, avoiding the imaging blurring problem caused by light penetration, and ensuring the comprehensiveness of the detection.
[0052] Four industrial cameras 19 are installed at the bottom of the upper support 16. These cameras are used to capture images of textile defects and transmit them to the inspection and control display screen 4. The inspection and control display screen 4 is trained with 100,000 samples of various fabric defects to form a deep learning defect recognition model. The first transmission roller 9 and the second transmission roller 21 record the fabric conveying length in real time by installing rotary encoders. When the industrial cameras 19 capture images, they simultaneously acquire encoder data. Combined with the lateral distribution of the cameras, the defect coordinates are accurately located through coordinate conversion and transmitted to the inspection and control display screen 4. The four industrial cameras 19 at the bottom of the upper support 16 can capture images of the fabric surface from all directions without blind spots. After the images are transmitted to the inspection and control display screen 4, the deep learning model trained with 100,000 defect samples is used to form a defect recognition model. Learning model analysis improves defect recognition accuracy and reduces false detection rate. The model can identify various defects such as holes, skipped stitches, and stains, increasing the types of defects it can identify compared to traditional algorithms. It is adaptable to different fabric materials such as cotton, linen, and chemical fibers, and has a fast recognition speed, significantly improving inspection efficiency and meeting the continuous inspection needs of the production line. The rotary encoders on the first drive roller 9 and the second drive roller 21 record the fabric conveying length in real time. The industrial camera 19 collects this data simultaneously when taking images. Combined with the lateral distribution of the camera, the defect coordinates are accurately located through coordinate conversion, improving positioning accuracy. The accurate coordinates are transmitted to the inspection control display screen 4 in real time, providing accurate basis for robot 27 marking. The defect finding efficiency is improved, the finding time is shortened, and the time cost of subsequent rework is significantly reduced.
[0053] A servo motor 23 is fixedly mounted on the front side of the drive box 22, and a threaded rod 24 is connected to the rear output end of the servo motor 23. A slider 25 is threadedly connected to the outer side of the threaded rod 24. A second slide groove 26 is provided at the bottom of the drive box 22, and the slider 25 is slidably connected to the second slide groove 26. A robot 27 is fixedly mounted on the bottom of the slider 25, and a marking cylinder 28 is fixedly mounted on the output end of the robot 27. The marking cylinder 28 contains washable ink, and an ink filling cap 29 is provided on the top of the marking cylinder 28. A marking pen 30 is provided at the bottom of the marking cylinder 28 controlled by a solenoid valve. The servo motor 23 on the front side of the drive box 22 drives the threaded rod 24 to rotate, causing the slider 25 to slide along the second slide groove 26. The robot 27 moves laterally with precision. With a precision of ±0.01mm and improved smoothness of movement, this transmission structure enables the robot 27 to move smoothly and precisely, ensuring that the marking structure can quickly respond to the defect coordinates and align with the defect position in a timely manner, reducing marking deviation and ensuring marking accuracy. At the same time, the servo motor 23 provides flexible control and adapts to the defect marking needs of fabrics of different widths. The marking cylinder 28 is installed at the end of the robot 27 at the bottom of the slider 25. The internal washable ink, combined with the marking pen 30 controlled by the solenoid valve, improves the defect marking accuracy, with a marking deviation of ≤±0.2mm. The washable ink avoids contaminating the fabric and meets the needs of subsequent processing. The ink filling cap 29 on the top of the marking cylinder 28 facilitates the replenishment of consumables, improves maintenance convenience, reduces equipment downtime, and ensures continuous operation of the production line.
[0054] Working principle:
[0055] When using this invention,
[0056] Fabric conveying and correction stage: The textile fabric is passed through the first drive roller 9, the correction roller 15, and the second drive roller 21 in sequence. The drive motor 7 is started to drive the rotating frame 8 and the first drive roller 9 to rotate, so as to achieve stable fabric conveying. The electric telescopic machine 11 drives the moving block 12 to slide along the first slide 13 according to the offset signal of the inspection control display screen 4. The correction roller 15 is used to adjust the position of the fabric to ensure that the fabric is conveyed in the center.
[0057] Light source illumination and image acquisition stage: The orthogonal light source 17 and the side light source 18 of the upper and lower supports 20 are activated. The high-brightness LED light source of the upper support 16 provides the main illumination, the side light source 18 enhances the defect contrast, and the diffuse light source of the lower support 20 is transmitted from the back of the fabric. The industrial camera 19 acquires the image of the fabric surface in real time and transmits it to the inspection control display screen 4.
[0058] Defect identification and location stage: The deep learning model of the inspection control display screen 4 analyzes the image to identify defects such as holes, skipped yarns, and stains. At the same time, it receives the conveying length data of the rotary encoders on the first transmission roller 9 and the second transmission roller 21, and combines the lateral distribution position of the industrial camera 19 to accurately locate the defect coordinates through coordinate conversion.
[0059] Automatic marking and subsequent processing stage: Servo motor 23 drives threaded rod 24 to move slider 25 and robot 27 laterally. Robot 27 adjusts its position according to the defect coordinates and makes washable marks on the defect through marking pen 30 at the bottom of marking cylinder 28. After the inspection is completed, the fabric is output through second transmission roller 21, and the operator can quickly repair the defect according to the marking.
[0060] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A defect inspection platform for textile fabrics, comprising an inspection frame (1), wherein the bottom of the inspection frame (1) is provided with four casters (2), and a door (3) is provided on the left side of the inspection frame (1), and an operating table (5) is fixedly installed on the front side of the inspection frame (1), and an inspection control display screen (4) is provided above the operating table (5), characterized in that: The inspection frame (1) is provided with rotating frames (8) on both the front and rear sides of the left side, and two first transmission rollers (9) are rotatably connected between the rotating frames (8). A second transmission roller (21) is rotatably connected to the right side of the inspection frame (1). A correction frame (10) is fixedly installed on both the front and rear sides of the lower left side of the inspection frame (1), and a moving block (12) is slidably connected above the correction frame (10). A correction roller (15) is connected between the two moving blocks (12). A correction roller (15) is fixedly installed inside the upper part of the inspection frame (1). An upper support (16) is provided with a positive light source (17), a side light source (18) and an industrial camera (19) at the bottom of the upper support (16). A lower support (20) is fixedly installed inside the inspection frame (1). A positive light source (17) and a side light source (18) are provided on the upper surface of the lower support (20). A drive box (22) is fixedly installed on the right side of the inspection frame (1). A robot (27) is moved below the drive box (22). A marking structure is connected to the end of the robot (27).
2. The defect inspection platform for textile fabrics according to claim 1, characterized in that: The inspection frame (1) is fixedly installed with a fixed frame (6) on both the front and rear sides of the left side, and a drive motor (7) is fixedly installed on the front side of the fixed frame (6). The output end of the drive motor (7) is connected to the rotating frame (8) on the front side of the inspection frame (1), and the rotating frame (8) on the rear side of the inspection frame (1) is rotatably connected to the front side of the fixed frame (6) on the rear side of the inspection frame (1).
3. The defect inspection platform for textile fabrics according to claim 1, characterized in that: The upper surface of the correction frame (10) is equipped with an electric telescopic machine (11) at an angle, and the output end of the electric telescopic machine (11) is connected to a moving block (12). The upper surface of the correction frame (10) has two first sliding grooves (13), and the bottom protrusion of the moving block (12) is slidably connected to the first sliding groove (13).
4. The defect inspection platform for textile fabrics according to claim 3, characterized in that: The upper surface of the movable block (12) is hinged to a mounting block (14), and the other end of the mounting block (14) is fixedly mounted with a correction roller (15).
5. The defect inspection platform for textile fabrics according to claim 1, characterized in that: A positive light source (17) is fixedly installed at the bottom center of the upper bracket (16), and the positive light source (17) adopts a high-brightness LED surface light source with a color temperature of 5000-6500K. Four side light sources (18) are installed at the bottom corner of the upper bracket (16), and the angle between the side light source (18) and the surface of the textile fabric is 30°-45°.
6. The defect inspection platform for textile fabrics according to claim 5, characterized in that: The upper surface of the lower support (20) is provided with a positive light source (17) in the middle, and four side light sources (18) are provided at the corners of the upper surface of the lower support (20). Both the positive light source (17) and the side light source (18) of the lower support (20) are diffuse LED light sources.
7. A defect inspection platform for textile fabrics according to claim 5, characterized in that: The bottom of the upper bracket (16) is equipped with four industrial cameras (19), which are used to collect images of textile defects and transmit them to the inspection control display screen (4). The inspection control display screen (4) is trained with 100,000 samples of various types of fabric defects to form a deep learning defect recognition model.
8. The defect inspection platform for textile fabrics according to claim 7, characterized in that: The first transmission roller (9) and the second transmission roller (21) record the fabric conveying length in real time by installing a rotary encoder, and the industrial camera (19) collects encoder data synchronously when taking pictures. Combined with the horizontal distribution position of the camera, the defect coordinates are accurately located by coordinate conversion and transmitted to the inspection control display screen (4).
9. A defect inspection platform for textile fabrics according to claim 1, characterized in that: A servo motor (23) is fixedly installed on the front side of the drive box (22), and a threaded rod (24) is connected to the output end of the servo motor (23). A slider (25) is threadedly connected to the outside of the threaded rod (24). A second slide groove (26) is opened at the bottom of the drive box (22), and the slider (25) is slidably connected to the second slide groove (26).
10. A defect inspection platform for textile fabrics according to claim 9, characterized in that: The bottom of the slider (25) is fixedly mounted with a robot (27), and the output end of the robot (27) is fixedly mounted with a marking tube (28). The marking tube (28) is filled with washable ink. The top of the marking tube (28) is provided with an ink filling cap (29), and the bottom of the marking tube (28) is provided with a marking pen (30) controlled by a solenoid valve.