Cloth detection device and detection method for yarn-dyed fabric production

Abstract

The invention discloses a cloth detection device and method for yarn-dyed fabric production, and relates to the technical field of cloth detection. The cloth detection device for yarn-dyed fabric production comprises supporting columns and a rack, a first motor is fixedly connected to the supporting column at the discharging end, an unwinding device is arranged at the output end of the first motor, a winding device is arranged on the supporting column at the receiving end, an immersion roller is rotationally connected to the rack, and the immersion roller is provided with a liquid inlet and a liquid outlet. The output end of a second motor is fixedly connected with a friction roller, the rack is fixedly connected with a drying box, the bottom of a cross beam of a portal frame is fixedly connected with an industrial camera and an integrated unwinding device, cloth does not need to be transferred across equipment, and the problems of cloth wrinkling and pollution caused by manual intervention are avoided; compared with existing fragmented detection equipment, the single-roll detection period is shortened, and the method is suitable for batch offline detection scenes.

Description

Technical Field

[0001] This invention relates to the field of fabric testing technology, and in particular to a fabric testing device and method for yarn-dyed fabric production. Background Technology

[0002] In the field of quality inspection for yarn-dyed fabric production, the detection of defects such as wet rubbing color fastness, texture, pattern accuracy, color spots, and missed weaves is a core aspect of ensuring product quality. However, existing testing equipment has many shortcomings and cannot meet the needs of industrialized mass production. First, the problem of functional fragmentation is prominent. Most existing equipment separates wet friction detection, drying, and visual inspection into independent operations. During inspection, the fabric needs to be manually transferred from the friction device to the drying device, and then to the visual inspection device. This is not only time-consuming, but also prone to causing the fabric to wrinkle and get dusty due to manual operation, resulting in a high rate of missed detection. Some integrated equipment only includes two functions and is not equipped with a drying module. The residual moisture in the fabric after wet friction will cause reflection interference during visual inspection, resulting in a high rate of false judgment and an inability to accurately identify minor defects such as color variations and missing weaves. Secondly, the overall process has poor continuity. There is no unified guiding mechanism between the modules of the existing equipment, and the material conveying is prone to jamming and deviation, requiring frequent manual adjustments. This not only increases the workload of operators, but also interrupts the testing process and reduces overall efficiency. In summary, existing yarn-dyed fabric testing devices have significant shortcomings in terms of functional integration, testing stability, accuracy, and process continuity. There is an urgent need to design a highly integrated, stable, accurate, and easy-to-operate testing device to address these pain points and meet the needs of industrialized batch quality inspection. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a fabric testing device and testing method for yarn-dyed fabric production, which can solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a fabric testing device and method for yarn-dyed fabric production, comprising support columns and a frame, wherein two support columns are provided, and the two support columns are respectively located at the feeding end and the receiving end of the device; a first motor is fixedly connected to the support column at the feeding end, and an unwinding device is provided at the output end of the first motor; a first guide roller group is rotatably connected to the frame; An immersion roller is rotatably connected to the frame, and an immersion tank is provided below the immersion roller. The immersion tank is fixedly connected to the frame. A second motor is fixedly installed on one side of the frame, and a friction roller is fixedly connected to the output end of the second motor. The friction roller is rotatably connected to the frame. A drying chamber is fixedly connected to the frame, and a second set of guide rollers is rotatably connected inside the drying chamber; A hot air generator is fixedly connected to the drying oven, and a hot air duct is provided at the connection between the hot air generator and the drying oven; a flow equalization plate is provided at the bottom of the hot air duct, the flow equalization plate is fixedly connected to the drying oven, and the flow equalization plate is located at the top inner side of the drying oven; a humidity sensor is fixedly installed on one side of the outlet end of the drying oven. A gantry frame is fixedly connected to the frame, and an industrial camera is fixedly connected to the bottom of the gantry frame beam. A light source is arranged between the industrial cameras, and the light source is fixed to the bottom of the gantry frame beam. A positioning sensor is arranged on one side of the industrial camera, and the positioning sensor is fixed to the bottom of the gantry frame beam. A pneumatic inkjet printer is arranged on one side of the positioning sensor, and the pneumatic inkjet printer is fixed above the gantry frame beam, with the inkjet printer nozzle passing through the gantry frame beam. A winding device is installed on the support column at the receiving end.

[0005] Preferably, the first guide roller group includes three guide rollers, which are located at both ends of the frame and at the outlet of the drying device, respectively.

[0006] Preferably, the unwinding device includes a first rotating shaft, an unwinding roller, and a first limiting block; the first rotating shaft is fixedly connected to the output end of a first motor, the unwinding roller is sleeved on the first rotating shaft, and the first limiting block is sleeved on one end of the first rotating shaft.

[0007] Preferably, the inlet and outlet of the drying oven are equipped with soft silicone curtains.

[0008] Preferably, there are three second guide roller groups, which are arranged in a triangular pattern inside the drying chamber.

[0009] Preferably, the flow equalization plate is a strip-shaped flow equalization plate.

[0010] A method for testing fabrics used in yarn-dyed fabric production includes the following steps: S1. Unwinding and Fabric Guiding: Start the first motor at the feeding end, drive the first rotating shaft to rotate the unwinding roller, and unwind the yarn-dyed fabric roll at a uniform speed; With manual assistance, one end of the unfolded fabric is passed through the feed end guide roller of the first guide roller group to ensure that the fabric adheres to the roller surface without wrinkles and is guided to the liquid-immersing roller. S2. Wet treatment of fabric: As the immersion rollers rotate, the fabric adheres to its surface and naturally droops into the test liquid in the immersion tank, completing the uniform wet treatment. After wet treatment, the fabric is rotated out by the liquid-impregnating roller. Excess liquid is drained through the roller surface and then conveyed to the friction roller. S3, Wet rubbing stain detection: Start the second motor to drive the friction roller to rotate at a set speed. The friction roller surface contacts the wet fabric surface and applies stable pressure. Observe whether the surface of the friction roller is stained with dye, or compare the color change of the fabric surface after friction with the matching color card to determine whether there is a wet friction color fading defect. If a stain is detected, the location of the defect is manually recorded. Subsequent visual inspection can confirm this. If no defect is found, the fabric is continued to be conveyed to the drying box. S4. Fabric drying and humidity monitoring: After wet friction testing, the fabric enters the drying chamber, where the soft silicone curtains at the inlet and outlet automatically close to isolate external airflow interference. The fabric moves along the S-shaped path formed by the second set of guide rollers, extending the drying path; Start the hot air generator, and the hot air is delivered to the drying box through the hot air duct. It is then diffused into a uniform airflow through the strip-shaped flow equalizer and acts on the surface of the fabric to achieve dehumidification. A humidity sensor at the outlet of the drying oven monitors the residual humidity of the fabric in real time. If the humidity is greater than the qualified threshold, the equipment automatically increases the hot air power; if the humidity is less than the threshold, the fabric continues to be conveyed to the next stage. S5. Visual defect detection and inkjet marking: After drying, the fabric is conveyed to the bottom of the gantry by the middle guide roller of the first guide roller group, keeping the fabric flat and without tension fluctuations. Three industrial cameras are activated to cover the entire fabric width and detect defects such as texture integrity, pattern alignment, color distribution, and missing weave holes on the fabric surface. The light source between the cameras is turned on to provide uniform illumination and avoid missed inspections at the edges of the fabric due to insufficient light. If the positioning sensor detects a defect, it immediately triggers the pneumatic inkjet printer. The inkjet nozzle passes through the gantry beam and prints a mark on the corresponding position on the upper surface of the fabric, which is convenient for subsequent traceability. Fabric without defects passes directly through and enters the winding stage.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. This fabric inspection device for yarn-dyed fabric production integrates the entire process, including unwinding device, immersion roller, immersion tank, friction roller, drying box, industrial camera, pneumatic inkjet printer, and winding device. It eliminates the need to transfer fabric across equipment, avoiding fabric wrinkles and contamination caused by manual intervention. Compared with existing fragmented inspection equipment, the single roll inspection cycle is shortened, making it suitable for batch offline inspection scenarios.

[0012] 2. The fabric inspection device for yarn-dyed fabric production has an unwinding device that restricts the axial movement of the unwinding roller through a first limiting block. The immersion roller and the immersion tank work together to achieve uniform wet treatment of the fabric. The friction roller is driven to rotate by a second motor to ensure stable wet friction pressure and speed. The test results meet the standards. Compared with existing equipment without a positioning structure, the repeatability of the test is improved.

[0013] 3. The fabric inspection device for yarn-dyed fabric production has a second guide roller group with triangular distribution inside the drying box forming an S-shaped fabric path, which extends the drying time; the strip flow equalization plate makes the hot air generated by the hot air generator act evenly on the fabric, and with the humidity sensor at the outlet of the drying box for real-time monitoring, it ensures that the residual humidity of the fabric is consistent, avoids moisture interference with subsequent visual inspection, and reduces the misjudgment rate. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a fabric testing device and testing method for yarn-dyed fabric production according to the present invention; Figure 2 This is a schematic diagram of a fabric testing device and testing method for yarn-dyed fabric production according to the present invention; Figure 3 This is a cross-sectional schematic diagram of a fabric testing device and testing method for yarn-dyed fabric production according to the present invention; Figure 4 This is a cross-sectional schematic diagram of a fabric testing device and testing method for yarn-dyed fabric production according to the present invention; Figure 5 This is a cross-sectional schematic diagram of a fabric testing device and testing method for yarn-dyed fabric production according to the present invention; Figure 6 This is a cross-sectional schematic diagram of a fabric testing device and testing method for yarn-dyed fabric production according to the present invention.

[0015] Reference numerals: 1. Support column; 2. First motor; 3. Unwinding device; 4. Frame; 5. First guide roller group; 6. Immersion roller; 7. Immersion tank; 8. Second motor; 9. Friction roller; 10. Drying oven; 11. Second guide roller group; 12. Hot air generator; 13. Flow equalization plate; 14. Humidity sensor; 15. Gantry; 16. Industrial camera; 17. Light source; 18. Positioning sensor; 19. Pneumatic inkjet printer; 20. Rewinding device. Detailed Implementation

[0016] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] Please see Figure 1-6 The present invention provides a technical solution: a fabric testing device for yarn-dyed fabric production, including a support column 1 and a frame 4. Two support columns 1 are provided, located at the feeding end and the receiving end of the device. A first motor 2 is fixedly connected to the feeding end support column 1. An unwinding device 3 is provided at the output end of the first motor 2. The unwinding device 3 includes a first rotating shaft, an unwinding roller, and a second limiting block. The first rotating shaft is fixedly connected to the output end of the first motor 2. An unwinding roller is sleeved on the first rotating shaft. A first limiting block is sleeved at one end of the first rotating shaft to limit the axial movement of the unwinding roller. A first guide roller group 5 is rotatably connected to the frame 4. The first guide roller group 5 includes three guide rollers, which are located at both ends of the frame 4 and the outlet of the drying device, respectively. A liquid-immersing roller 6 is rotatably connected to the frame 4, and a liquid-immersing tank 7 is provided below the liquid-immersing roller 6. The liquid-immersing tank 7 is fixedly connected to the frame 4. A second motor 8 is fixedly installed on one side of the frame 4. A friction roller 9 is fixedly connected to the output end of the second motor 8. The friction roller 9 is rotatably connected to the frame 4. A drying box 10 is fixedly connected to the frame 4. Soft silicone curtains are provided at the inlet and outlet of the drying box 10. A second guide roller group 11 is rotatably connected inside the drying box 10. There are three second guide roller groups 11, which are triangularly distributed inside the drying box 10 to form an S-shaped fabric path. A hot air generator 12 is fixedly connected to the drying oven 10. The hot air generator 12 is a SINOVO 3kW model. A hot air duct is provided at the connection between the hot air generator 12 and the drying oven 10. A flow equalization plate 13 is provided at the bottom of the duct. The flow equalization plate 13 is a strip-shaped flow equalization plate 13. It is fixedly connected to the drying oven 10 and located at the top of the inner side of the drying oven 10. A humidity sensor 14 is fixedly installed on one side of the outlet end of the drying oven 10. The humidity sensor 14 is a SensirionSHT31 model. A gantry frame 15 is fixedly connected to the frame 4. An industrial camera 16 is fixedly connected to the bottom of the crossbeam of the gantry frame 15. The industrial camera 16 is a Keyence CV-X200. There are three industrial cameras 16. A light source 17 is set between the industrial cameras 16. The light source 17 is fixed to the bottom of the crossbeam of the gantry frame 15. A positioning sensor 18 is set on one side of the industrial camera 16. The positioning sensor 18 is a photoelectric sensor, model E3Z-LS63. The positioning sensor 18 is fixed to the bottom of the crossbeam of the gantry frame 15. A pneumatic inkjet printer 19 is set on one side of the positioning sensor 18. The pneumatic inkjet printer 19 is model Domino A100. The pneumatic inkjet printer 19 is fixed above the crossbeam of the gantry frame 15. The printing nozzle passes through the crossbeam of the gantry frame 15 and is aimed at the upper surface of the fabric. A winding device 20 is provided on the receiving end support column 1. The winding device 20 includes a magnetic powder brake, a second rotating shaft, a winding roller, and a second limiting block. The magnetic powder brake is a Mitsubishi ZKB-2.5XN and is fixed on the receiving end support column 1. The second rotating shaft is fixedly connected to the output end of the magnetic powder brake. A winding roller is sleeved on the second rotating shaft, and a second limiting block is sleeved on one end of the second rotating shaft to limit the axial movement of the winding roller.

[0021] Working principle: The first motor 2 on the unwinding end support column 1 starts, driving the first rotating shaft of the unwinding device 3 to rotate, which in turn drives the unwinding roller sleeved on the first rotating shaft to rotate, unwinding the yarn-dyed fabric roll; the first limit block restricts the axial movement of the unwinding roller to ensure stable fabric output; After the unfolded yarn-dyed fabric is guided by the first guide roller group 5 on the frame 4 near the feeding end, it adheres to the surface of the immersion roller 6 and enters the immersion tank 7 to complete the wet treatment; then the fabric continues to be conveyed to the friction roller 9, and the second motor 8 drives the friction roller 9 to rotate to perform wet friction stain detection on the fabric surface. After the friction test is completed, the fabric enters the drying chamber 10. The soft silicone curtains at the inlet and outlet of the drying chamber 10 isolate the external airflow. The fabric moves along the S-shaped path formed by the triangularly distributed second guide roller group 11, extending the drying path. The hot air generated by the hot air generator 12 is transported to the drying chamber 10 through the hot air duct. After being evenly diffused by the strip-shaped flow equalization plate 13, it acts on the fabric to achieve dehumidification. The humidity sensor 14 at the outlet of the drying chamber 10 monitors the humidity of the fabric in real time to ensure that it meets the standards. After drying, the fabric is conveyed to the bottom of the gantry frame 15 by the middle guide roller of the first guide roller group 5. Three industrial cameras 16 detect defects such as texture, pattern, color, and missing weave on the surface of the fabric. The light source 17 between the cameras provides uniform illumination. When the positioning sensor 18 detects the defect position, it triggers the pneumatic inkjet printer 19. The inkjet nozzle passes through the crossbeam of the gantry frame 15 and is aligned with the upper surface of the fabric to mark the defect. After the fabric has been inspected and marked, it is finally conveyed to the take-up end by the end guide roller of the first guide roller group. The magnetic powder brake of the take-up device 20 controls the rotation speed of the second rotating shaft and drives the take-up roller to rotate and take up. The second limit block restricts the axial movement of the take-up roller to ensure neat take-up. It integrates the entire process of unwinding device 3, immersion roller 6, immersion tank 7, friction roller 9, drying box 10, industrial camera 16, pneumatic inkjet printer 19, and winding device 20, eliminating the need to transfer fabric across devices and avoiding fabric wrinkles and contamination caused by manual intervention. Compared with existing fragmented testing equipment, the single roll testing cycle is shortened, making it suitable for batch offline testing scenarios. The unwinding device 3 restricts the axial movement of the unwinding roller by the first limiting block. The immersion roller 6 and the immersion tank 7 cooperate to achieve uniform wet treatment of the fabric. The friction roller 9 is driven to rotate by the second motor 8 to ensure stable wet friction pressure and speed. The test results meet the standards. Compared with the existing equipment without positioning structure, the test repeatability is improved. The second guide roller group 11, which is triangularly distributed inside the drying chamber 10, forms an S-shaped fabric path, extending the drying time. The strip-shaped flow equalization plate 13 makes the hot air generated by the hot air generator 12 act evenly on the fabric. In conjunction with the humidity sensor 14 at the outlet of the drying chamber 10, it monitors in real time to ensure that the residual humidity of the fabric is consistent, avoids moisture interference with subsequent visual inspection, and reduces the misjudgment rate. Three industrial cameras 16 cover the entire fabric width, and the light source 17 between the cameras provides uniform illumination to avoid missing defects at the edge of the fabric. The positioning sensor 18 is linked with the pneumatic inkjet printer 19, and the inkjet nozzle passes through the crossbeam of the gantry frame 15 and is aligned with the fabric. Compared with manual marking, efficiency is improved and it is convenient for subsequent re-inspection and traceability. The winding device 20 flexibly adjusts the winding tension through a magnetic powder brake to adapt to yarn-dyed fabrics of different thicknesses; the second limit block restricts the axial movement of the winding roller, improving the winding flatness and avoiding secondary damage to the fabric caused by loose winding in existing equipment. The three guide rollers of the first guide roller group 5 are located at both ends of the frame 4 and the outlet of the drying box 10, respectively, to ensure that the fabric conveying path is smooth and without jamming; each module is arranged in sequence along the fabric conveying direction, which makes it easy for operators to observe the status of each link, without complicated debugging, and novices can get started quickly.

[0022] A fabric testing device and method for yarn-dyed fabric production includes the following steps: S1. Unwinding and Fabric Guiding: Start the first motor 2 at the feeding end, drive the first rotating shaft to rotate the unwinding roller, and unwind the yarn-dyed fabric roll at a uniform speed; With manual assistance, one end of the unfolded fabric is passed through the feed end guide roller of the first guide roller group 5 to ensure that the fabric adheres to the roller surface without wrinkles and is guided to the liquid-immersing roller 6.

[0023] S2. Wet treatment of fabric: As the immersion roller 6 rotates, the fabric adheres to its surface and naturally hangs down into the detection liquid in the immersion tank 7, completing the uniform wet treatment. After wet treatment, the fabric is rotated out by the liquid-immersing roller 6. Excess liquid is drained through the roller surface and then conveyed to the friction roller 9.

[0024] S3, Wet rubbing stain detection: Start the second motor 8 to drive the friction roller 9 to rotate at a set speed. The surface of the friction roller 9 contacts the surface of the wet fabric and applies stable pressure. Observe whether the surface of the friction roller 9 is stained with dye, or compare the color change of the fabric surface after friction with the matching color card to determine whether there is a wet friction color fading defect. If a stain is detected, the location of the defect is manually recorded. Subsequent visual inspection can confirm this for a second time. If no defect is found, the fabric is continued to be conveyed to the drying box 10.

[0025] S4. Fabric drying and humidity monitoring: After wet friction testing, the fabric enters the drying chamber 10, and the soft silicone curtains at the inlet and outlet automatically close to isolate external airflow interference. The fabric moves along the S-shaped path formed by the second guide roller group 11, extending the drying path; The hot air generator 12 is started, and hot air is delivered to the drying box 10 through the hot air duct. It is diffused into a uniform airflow through the strip flow equalization plate 13 and acts on the surface of the fabric to achieve dehumidification. The humidity sensor 14 at the outlet of the drying oven 10 monitors the residual humidity of the fabric in real time. If the humidity is greater than the qualified threshold, the equipment automatically increases the hot air power; if the humidity is less than the threshold, the fabric continues to be conveyed to the next stage.

[0026] S5. Visual defect detection and inkjet marking: After drying, the fabric is conveyed to the bottom of the gantry frame 15 by the middle guide roller of the first guide roller group 5, keeping the fabric flat and without tension fluctuations; Three industrial cameras 16 are activated to cover the entire fabric width and detect defects such as texture integrity, pattern alignment, color distribution, and missing weave holes on the fabric surface. The light source 17 between the cameras is turned on to provide uniform illumination and prevent the edges of the fabric from being missed due to insufficient light. If the positioning sensor 18 detects a defect location, it immediately triggers the pneumatic inkjet printer 19. The inkjet nozzle passes through the crossbeam of the gantry frame 15 and prints a mark on the corresponding position on the upper surface of the fabric for easy traceability. Fabric without defects passes directly through and enters the winding stage.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A fabric detection device for the production of yarn-dyed fabric, comprising a support column (1) and a frame (4), characterized in that: Two support columns (1) are arranged at the feeding end and the receiving end of the device respectively; A first motor (2) is fixedly connected to the support column (1) at the feeding end, and an unwinding device (3) is arranged at the output end of the first motor (2); A first guide roller group (5) is rotatably connected to the rack (4); An immersion roller (6) is rotatably connected to the rack (4), and an immersion tank (7) is arranged below the immersion roller (6), and the immersion tank (7) is fixedly connected to the rack (4); A second motor (8) is fixedly installed on one side of the rack (4), a friction roller (9) is fixedly connected to the output end of the second motor (8), and the friction roller (9) is rotatably connected to the rack (4); An oven (10) is fixedly connected to the rack (4), and a second guide roller group (11) is rotatably connected to the oven (10); A hot air generator (12) is fixedly connected to the oven (10), and a hot air duct is formed at the connection between the hot air generator (12) and the oven (10); a flow uniformizing plate (13) is arranged at the bottom of the hot air duct, the flow uniformizing plate (13) is fixedly connected to the oven (10), and the flow uniformizing plate (13) is located at the inner top of the oven (10); a humidity sensor (14) is fixedly installed on one side of the outlet end of the oven (10); A portal frame (15) is fixedly connected to the rack (4), and an industrial camera (16) is fixedly connected to the bottom of the beam of the portal frame (15); A light source (17) is arranged between the industrial cameras (16), and the light source (17) is fixed to the bottom of the beam of the portal frame (15); a positioning sensor (18) is arranged on one side of the industrial camera (16), and the positioning sensor (18) is fixed to the bottom of the beam of the portal frame (15); A pneumatic inkjet printer (19) is arranged on one side of the positioning sensor (18), and the pneumatic inkjet printer (19) is fixed above the beam of the portal frame (15); A winding device (20) is arranged on the support column (1) at the receiving end.

2. The fabric detection device for production of yarn-dyed fabric according to claim 1, characterized in that: The first guide roller group (5) comprises three guide rollers arranged at both ends of the rack (4) and at the outlet of the drying device.

3. The fabric detection device for production of yarn-dyed fabric according to claim 1, characterized in that: The unwinding device (3) comprises a first rotating shaft, an unwinding roller and a first limiting block; The first rotating shaft is fixedly connected to the output end of the first motor (2), the unwinding roller is sleeved on the first rotating shaft, and the first limiting block is sleeved on one end of the first rotating shaft.

4. The fabric detection device for production of yarn-dyed fabric according to claim 1, characterized in that: Soft silica gel curtains are arranged at the inlet and outlet of the oven (10).

5. A fabric detection device for the production of yarn-dyed fabric according to claim 1, characterized in that: The second guide roller group (11) comprises three guide rollers arranged in a triangular distribution in the oven (10).

6. A fabric detection device for the production of yarn-dyed fabric according to claim 1, characterized in that: The flow uniformizing plate (13) is a strip-shaped flow uniformizing plate.

7. A fabric detection device for the production of yarn-dyed fabric according to claim 1, characterized in that: The industrial camera (16) comprises three industrial cameras.

8. A fabric detection device for the production of yarn-dyed fabric according to claim 1, characterized in that: The winding device (20) comprises a magnetic powder brake, a second rotating shaft, a winding roller and a second limiting block; the magnetic powder brake is fixed to the support column (1) at the receiving end, and the second rotating shaft is fixedly connected to the output end of the magnetic powder brake; The winding roller sleeve is sleeved on the second rotating shaft, and the second limiting block is sleeved on one end of the second rotating shaft.

9. A fabric detection device for the production of yarn-dyed fabric according to claim 1, characterized in that: The axis of the guide roller near the material receiving end in the first guide roller group (5) is parallel to the axis of the winding roller of the winding device (20).

10. A fabric detection method for yarn-dyed fabric production, using the fabric detection device for yarn-dyed fabric production according to any one of claims 1-9, characterized in that: The method comprises the following steps: S1, unwinding start and cloth guiding: Start the first motor (2) at the material receiving end to drive the first rotating shaft to rotate the unwinding roller, and evenly expand the yarn-dyed cloth roll; Manually assist one end of the expanded cloth to pass through the material receiving end guide roller of the first guide roller group (5), ensure that the cloth is wrinkle-free on the roller surface, and guide it to the immersion roller (6); S2, cloth wet treatment: The cloth is attached to the surface of the immersion roller (6) and naturally falls into the detection liquid in the immersion tank (7), completing uniform wet treatment; After wet treatment, the cloth is turned out by the immersion roller (6), and the excess liquid is drained through the roller surface before being conveyed to the friction roller (9); S3, wet friction color stain detection: Start the second motor (8) to drive the friction roller (9) to rotate at a set speed, and the surface of the friction roller (9) contacts the surface of the wet cloth and applies stable pressure; Observe whether the surface of the friction roller (9) is stained with color stains, or compare the color change of the surface of the cloth after friction with the matching color card to judge whether there is a wet friction color loss defect; If color stains are detected, manually record the defect position, and subsequent visual detection can be used for secondary confirmation. If there is no defect, the cloth is continuously conveyed to the drying box (10); S4, cloth drying and humidity monitoring: After the wet friction detection, the cloth enters the drying box (10), and the soft silica gel curtain at the inlet and outlet is automatically closed to isolate external airflow interference; The cloth moves along the S-shaped path formed by the second guide roller group (11), extending the drying path; Start the hot air generator (12), and the hot air is conveyed to the drying box (10) through the hot air pipeline, diffused into uniform airflow through the strip-shaped flow uniformizing plate (13), and acts on the surface of the cloth to realize dehumidification; The humidity sensor (14) at the outlet end of the drying box (10) monitors the residual humidity of the cloth in real time. If the humidity is greater than the qualified threshold, the equipment automatically increases the hot air power. If the humidity is less than the threshold, the cloth continues to be conveyed to the next link; S5, visual defect detection and code marking: After drying, the cloth is conveyed to below the gantry (15) through the middle guide roller of the first guide roller group (5), keeping the cloth flat without tension fluctuation; Start the three industrial cameras (16) to cover the full width of the cloth, and detect defects such as pattern integrity, pattern alignment, color distribution, and missed weaving holes on the surface of the cloth; The light source (17) between the cameras is turned on to provide uniform illumination and avoid missed detection due to insufficient light at the edges of the cloth width; If the positioning sensor (18) detects a defect position, the pneumatic code jet (19) is triggered immediately, the code jet passes through the cross beam of the gantry (15), and marks the corresponding position on the upper surface of the cloth, which is convenient for subsequent tracing; The cloth without defects directly passes through and enters the winding link.

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