A new material non-woven fabric printing and dyeing color difference detection device and a detection method thereof

Abstract

The present application relates to a kind of new material non-woven fabric printing and dyeing color difference detection device and its detection method, belong to color difference detection technical field.The device solves the problem of one-sided, low precision of traditional detection method, including base and the first detection box, second detection box and third detection box being set along the fabric conveying direction.The first and third detection box are provided with detection platform and multiple cameras, and the second detection box is provided with wrinkle mechanism.The wrinkle mechanism includes torsion table and drive assembly, can make fabric form columnar distortion, bowl-shaped depression or wave shape, realize multi-angle shooting.Base is provided with guide roller and winding mechanism, for fabric turnover and tension control.During detection, fabric passes through each detection box in turn, and camera detects front, wrinkle state and back respectively.The method improves the comprehensiveness and accuracy of detection, avoids light interference, and is suitable for the efficient detection of non-woven fabric printing and dyeing color difference.

Description

Technical Field

[0001] This invention belongs to the field of color difference detection technology, and relates to a new material nonwoven fabric printing and dyeing difference detection device and its detection method. Background Technology

[0002] In the production process of nonwoven fabrics, the detection of printing and dyeing differences is a crucial step, which directly affects the quality of the product and its market competitiveness. Traditional methods for detecting printing and dyeing differences in nonwoven fabrics mainly rely on manual visual inspection or simple mechanical inspection equipment. These methods have disadvantages such as low detection efficiency, low accuracy, and susceptibility to human factors.

[0003] With the continuous expansion of the application fields of non-woven fabrics and the increasing demands of consumers for product quality, traditional testing methods are no longer able to meet the needs of modern production. Especially when facing new materials such as non-woven fabrics, traditional testing methods are inadequate due to their material characteristics, the complexity of printing and dyeing processes, and the diversity of color differences.

[0004] Specifically, existing testing equipment can often only test a single surface of the fabric, failing to fully cover both sides, resulting in biased test results. Furthermore, since the fabric is tested in a flat state, factors such as light reflection can easily interfere with the testing accuracy, making it difficult to accurately capture some minute color differences.

[0005] Therefore, we propose a novel device and method for detecting printing and dyeing differences in nonwoven fabrics to address the aforementioned problems. Summary of the Invention

[0006] In view of this, in order to solve the problem that the detection can only be performed on a single surface of the fabric, which cannot fully cover both sides of the fabric and results in a one-sided detection, and that the detection accuracy is easily affected by factors such as light reflection when the fabric is in a flat state, making it difficult to accurately capture some minute color differences, the present invention provides a new material nonwoven fabric printing and dyeing difference detection device and detection method.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a novel nonwoven fabric printing and dyeing difference detection device, comprising a base, wherein a first detection box, a second detection box and a third detection box are sequentially arranged on the base along the fabric conveying direction;

[0008] Both the first and third detection boxes are equipped with a detection platform and multiple cameras, and the second detection box is equipped with a folding mechanism.

[0009] The pleating mechanism includes at least one torsion table and a drive assembly. The top of the torsion table is embedded with a plurality of first suction cups. The drive assembly drives the torsion table to rise and rotate, causing the fabric to form a columnar twist.

[0010] A guide roller is rotatably mounted on the base, and a winding mechanism is fixedly connected to the base. The winding mechanism is located between the second detection box and the third detection box.

[0011] The camera in the first detection box detects the front side of the fabric, the camera in the third detection box detects the back side of the fabric after it passes the guide roller, and the camera in the second detection box detects the fabric in a columnar twisted state.

[0012] As a further improvement to the above technical solution:

[0013] The driving component includes:

[0014] A cylinder fixed inside a base;

[0015] A sliding rod welded to the cylinder piston rod, the top end of which is welded to a torsion table;

[0016] A retaining ring is fitted onto the sliding rod, and the retaining ring is fixed to the top of the base;

[0017] The outer wall of the sliding rod has a spiral groove, and a sliding column that slides in cooperation with the spiral groove is fixed inside the fixing ring.

[0018] The first, second, and third testing boxes are all equipped with mounting bases. The cameras are fixed to the mounting bases with bolts, and the cameras in the first and third testing boxes are arranged in a V-shaped double row staggered above the testing platform.

[0019] The folding mechanism also includes:

[0020] A first fixing platform is fixed to the top of the base, and a groove is formed on the top of the first fixing platform;

[0021] A second suction cup is provided in the groove, which adsorbs the fabric to form a bowl-shaped depression.

[0022] The folding mechanism also includes:

[0023] Two second fixing platforms fixed to the top of the base;

[0024] A connecting bar that connects two second fixed platforms, with a wave groove formed at the top of the connecting bar;

[0025] A third suction cup is located at the bottom of the wave groove, which adsorbs the fabric to form a wave shape.

[0026] The winding mechanism includes a servo drive system and a tension control system, wherein the tension control system maintains the fabric tension at 7±0.5N.

[0027] The testing platform is a light-transmitting acrylic panel, with an LED surface light source underneath that has a color temperature of 5000K and a color rendering index (CRI) of ≥95.

[0028] The guide roller is rotatably mounted on the base via a self-lubricating bearing, and its radial runout is ≤0.02mm.

[0029] The side walls of the first, second, and third testing boxes are all provided with rectangular openings with polytetrafluoroethylene wear-resistant strips.

[0030] A detection method based on the above-mentioned novel nonwoven fabric printing and dyeing difference detection device includes the following steps:

[0031] S1. Fabric threading and tensioning: Pass the end of the fabric from the unwinding mechanism through the first and second inspection boxes in sequence, and after passing through the guide rollers into the third inspection box, fix it to the winding mechanism; start the winding mechanism to tension the fabric.

[0032] S2. Planar color difference detection: Activate multiple cameras in the first detection box to detect the surface color difference of the stationary fabric; after the detection is completed, drive the winding mechanism to pull the fabric to move.

[0033] S3, Dynamic Wrinkle Detection: When the fabric enters the second detection box:

[0034] S31. Activate the first suction cup of the selected group to adsorb and fix the fabric;

[0035] S32, Drive the corresponding cylinder to push the sliding rod upward;

[0036] S33. Through the cooperation of the sliding column and the spiral groove, the sliding rod is made to rise and rotate at the same time;

[0037] S34. Drive the twisting table to twist the fabric into a cylindrical pleated state;

[0038] S35. Start the camera to perform multi-angle defect detection;

[0039] S46. Reverse side condition detection: When the fabric moves to the third detection box and is face down, the camera inside the box is activated to detect the fabric surface condition.

[0040] S5, Pleating Pattern Extension: The pleating mechanism in step S3 is replaced with:

[0041] S51, Bowl-shaped recessed mechanism: Recessed folds are formed through a groove structure;

[0042] S52, Wave-shaped mechanism: Continuous wave folds are formed through wave grooves;

[0043] S53, Columnar Twisting Mechanism: Columnar folds are formed by a torsion table and a first suction cup.

[0044] The beneficial effects of this invention are as follows:

[0045] 1. The novel nonwoven fabric printing and dyeing difference detection device disclosed in this invention realizes all-round color difference detection of the front and back of the fabric by sequentially setting a first detection box, a second detection box for detecting the front of the fabric and a third detection box for detecting the back of the fabric on the base. Each detection box is equipped with multiple cameras, which can take pictures and detect the fabric from multiple angles, greatly improving the accuracy and comprehensiveness of the detection and effectively avoiding missed detection or false detection caused by detection from a single angle.

[0046] 2. The novel nonwoven fabric printing and dyeing difference detection device disclosed in this invention has a pleating mechanism set in the second detection box. Through the cooperation of the torsion table, the drive component and the first suction cup, the fabric can be made to twist in a columnar shape. During the detection process, the camera can take pictures of the fabric from more angles and directions, thereby effectively avoiding the problem of reduced detection accuracy caused by light reflection and other reasons. In addition, the pleating mechanism also includes a structure that can make the fabric concave in a bowl shape and wavy shape, further enriching the pleating shape of the fabric and providing more diversified detection conditions for color difference detection.

[0047] 3. The novel nonwoven fabric printing and dyeing difference detection device disclosed in this invention realizes automatic fabric transfer and winding through the setting of guide rollers and winding mechanism. The winding mechanism can not only tighten the fabric to ensure the flatness of the fabric during the detection process, but also adjust the moving speed of the fabric as needed to adapt to different detection requirements, which greatly improves detection efficiency and reduces labor costs.

[0048] This invention achieves comprehensive and accurate inspection of both sides of the fabric by setting up multiple inspection boxes to work in tandem. Through the pleating mechanism, the fabric produces various pleat shapes such as columnar, bowl-shaped, and wavy shapes during the inspection process, effectively overcoming the interference of light reflection on the inspection accuracy and improving the accuracy and reliability of the inspection. At the same time, combined with an automated winding and guiding system and an intelligent controller, the inspection process is highly efficient and automated, which greatly improves the inspection efficiency and reduces labor costs.

[0049] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0050] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0051] Figure 1 This is a three-dimensional structural schematic diagram of a novel nonwoven fabric printing and dyeing difference detection device according to the present invention;

[0052] Figure 2 This is a schematic diagram of the detection box structure of a novel nonwoven fabric printing and dyeing difference detection device according to the present invention;

[0053] Figure 3 This is a schematic diagram of the detection platform structure of a novel nonwoven fabric printing and dyeing difference detection device according to the present invention;

[0054] Figure 4 This is a schematic diagram of the torsion table in Embodiment 1;

[0055] Figure 5 This is a schematic diagram of the structure of the driving component in Embodiment 1;

[0056] Figure 6 This is a schematic diagram of the folding mechanism in Embodiment 2;

[0057] Figure 7 This is a schematic diagram of the folding mechanism in Embodiment 3.

[0058] Reference numerals: 1. Base; 2. First detection box; 3. Second detection box; 4. Third detection box; 5. Display; 6. Guide roller; 7. Winding mechanism; 8. Controller; 9. Rectangular opening; 10. Mounting base; 101. Extension rod; 102. Fixed base; 11. Camera; 12. Detection platform; 13. Torsion table; 14. First suction cup; 15. Sliding rod; 16. Cylinder; 17. Spiral groove; 18. Sliding column; 19. Fixing ring; 20. First fixed platform; 21. Groove; 22. Second suction cup; 23. Second fixed platform; 24. Connecting bar; 25. Third suction cup; 26. Wave groove; 261. Groove bottom; 27. Fabric; 28. Moving frame; 29. ​​Control cabinet; 30. Adjusting frame; 31. Inspection window. Detailed Implementation

[0059] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0060] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0061] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0062] With the continuous expansion of the application fields of non-woven fabrics and the increasing demands of consumers for product quality, traditional testing methods are no longer able to meet the needs of modern production. Especially when facing new materials such as non-woven fabrics, traditional testing methods are inadequate due to their material characteristics, the complexity of printing and dyeing processes, and the diversity of color differences.

[0063] Existing testing equipment often only allows testing of a single surface of the fabric, failing to fully cover both sides and resulting in biased test results. Furthermore, because the fabric is tested on a flat surface, factors such as light reflection can easily interfere with testing accuracy, making it difficult to accurately capture minute color differences. This application addresses these problems using the following embodiments:

[0064] Example 1

[0065] like Figures 1-5 As shown, a novel nonwoven fabric printing and dyeing difference detection device includes a base 1, which is spliced ​​from 20mm thick aluminum alloy profiles with anodized surface treatment and adjustable feet at the four corners. A first detection box 2, a second detection box 3, and a third detection box 4 are bolted to the top of the base 1, with the box spacing precisely set at 750mm to ensure that the straightness error of the fabric 27 transmission path is ≤0.3mm.

[0066] The rectangular openings 9 on the front and rear side walls of each testing chamber feature a double-rounded corner transition structure with a corner radius R = 6mm. The inner walls are lined with PTFE or UHMWPE (ultra-high molecular weight polyethylene) wear-resistant strips. Four mounting brackets 10 are fixed to the inner wall of the testing chamber using M6 bolts. Each mounting bracket 10 contains an extension rod 101, and the bottom end of the extension rod 101 is fitted with a fixing bracket 102. A Hikvision MV-CE200-10GM industrial camera 11, equipped with a Computar M0814-MP2 lens, is mounted on the fixing bracket 102, providing a field of view of 400mm × 300mm at a working distance of 300mm. The camera 11 is connected to a 24-inch industrial display 5 on the outside of the chamber via Gigabit Ethernet. The display uses an A-grade LCD panel with a brightness of 300cd / m². 2 It covers 72% of the NTSC color gamut.

[0067] Each of the first detection box 2, the second detection box 3, and the third detection box 4 has a display 5 mounted on its outer side via an adjustment bracket 30. The display 5 is connected to the camera 11 via a wire, and the monitoring screen is displayed in real time via the display 5. At the same time, the adjustment bracket 30 adopts an existing adjustment bracket that can be adjusted up, down, left, and right. Furthermore, the first detection box 2, the second detection box 3, and the third detection box 4 are also equipped with a maintenance window 31 for subsequent maintenance of the camera 11 inside.

[0068] The winding mechanism 7 adopts a Mitsubishi Electric J4 series servo drive system and is equipped with a 300mm diameter aluminum alloy winding roller with a knurled surface. The tension control system adjusts the winding speed in real time through closed-loop feedback to keep the tension of the fabric 27 stable at 7±0.5N. The guide roller 6 is rotatably mounted on the top side of the base 1 using a self-lubricating bearing, with a radial runout ≤0.02mm, ensuring smooth reversal of the fabric 27.

[0069] Both the first testing box 2 and the third testing box 4 are equipped with testing platforms 12. The testing platforms 12 are made of translucent acrylic sheets or tempered glass, with a thickness of 10mm and a matte anti-reflective coating on the surface. An LED surface light source (model LXML-PW01) with a color temperature of 5000K and a color rendering index (CRI) ≥ 95 is installed below the platform. The camera is uniformly illuminated by a diffuser. The cameras 11 on the testing platform 12 are arranged in a V-shaped double-row staggered arrangement, which can completely cover the testing surface of the fabric 27. X-Rite ColorChecker Classic color cards are embedded in the edge of the testing platform 12 and are automatically calibrated every 4 hours.

[0070] The folding mechanism includes four independently controlled columnar torsion units housed within the second detection chamber 3. Each columnar torsion unit is a CNC-machined torsion table 13 made of aerospace-grade aluminum, 80mm in diameter, with a surface-etched grid pattern to enhance friction. Six first suction cups 14, 10mm in diameter, are mounted on the top in a ring arrangement. The vacuum level is controlled by independent solenoid valves, achieving a maximum suction force of 15N / cm². 2 .

[0071] It also includes a drive assembly driven by an SMC cylinder 16 with a stroke of 120mm and a built-in magnetic switch to detect the extension / retraction position. The sliding rod 15 is made of chrome-plated alloy steel with a diameter of 25mm and a double-headed spiral groove 17 on its surface, with a groove depth of 3mm and a pitch of 15mm. The fixing ring 19 is fixed to the base 1 by a flange and has two embedded sliding columns 18 made of self-lubricating copper-based alloy material. When the cylinder 16 is driven by a pressure of 0.5MPa, the sliding rod 15 can rise at a speed of 150mm / s. At the same time, it can rotate 270° through the cooperation of the spiral groove 17 and the sliding columns 18, so that the fabric 27 forms a columnar pleat with a diameter of 50mm. A control cabinet 29 is also provided on one side of the base 1. The control cabinet 29 is connected to the above-mentioned electrical components through wires to control its operation.

[0072] When in use, one end of the fabric 27 on the unwinding mechanism is passed through the first detection box 2 and the second detection box 3 in sequence, and then around the guide roller 6 and into the third detection box 4 and fixed on the winding mechanism 7.

[0073] The winding mechanism 7 is activated to tighten the fabric 27. Multiple cameras 11 in the first detection box 2 are activated to detect the color difference of the fabric 27. After the detection is completed, the winding mechanism 7 is activated to wind up the fabric 27, causing the fabric 27 to move. At least one of the cameras 11 is a HySpex MCT-1000 short-wave infrared camera (900-1700nm) to detect the dye penetration depth.

[0074] When the fabric 27 moves into the second detection box 3, one set of first suction cups 14 is activated to fix the fabric 27, and the corresponding cylinder 16 is activated to extend. During the extension of the cylinder 16, the sliding rod 15 can be driven to move upward. During the upward movement of the sliding rod 15, the sliding rod 15 can be rotated while moving upward by utilizing the cooperation of the sliding column 18 and the spiral groove 17. Since multiple first suction cups 14 fix the fabric 27 on the torsion table 13 at the same time, the upward rotation can drive the fabric 27 to twist, so that the fabric 27 forms a cylindrical fold. The corresponding camera 11 is activated to perform detection. Due to the fold of the fabric 27, the camera 11 can perform multi-directional and multi-angle detection to avoid reducing the detection accuracy due to light reflection.

[0075] When the inspected fabric 27 is moved into the third inspection box 4, the front of the fabric 27 is facing down, and multiple cameras 11 in the third inspection box 4 are activated for inspection.

[0076] Example 2

[0077] like Figures 1-3 ,and Figure 6 As shown, this embodiment improves the pleating mechanism in the second detection box 3 based on embodiment one, and is particularly suitable for detecting the uniformity of dye penetration.

[0078] The second detection chamber 3 is equipped with two sets of bowl-shaped recessed units. The bowl-shaped recessed unit is a first fixed platform 20 made of 45# steel with heat treatment. A groove 21 with a diameter of 120mm is opened on the top, and a second suction cup 22 is embedded in the bottom of the groove. By adjusting the vacuum degree (0-75kPa), a bowl-shaped deformation with a depth of 35mm can be formed. The radius of curvature of the recessed area is adjustable from 60-90mm. The camera 11 in the second detection chamber 3 corresponds to the first fixed platform 20.

[0079] Fabric 27 is output through the unwinding mechanism, passes through the first inspection box 2 and the second inspection box 3 in sequence, and enters the third inspection box 4 after passing around the guide roller 6.

[0080] When the fabric 27 moves to the second detection box 3, the PLC controller 8 activates the second suction cup 22, causing the fabric 27 to form a bowl-shaped depression.

[0081] The camera 11 inside the second detection box 3 takes pictures and captures the color difference changes in the recessed area of ​​the fabric 27.

[0082] The detection data is displayed in real time on the monitor 5 and stored in the database of the controller 8.

[0083] Example 3

[0084] like Figures 1-3 ,and Figure 7 As shown, this embodiment addresses the testing requirements of elastic nonwoven fabrics by setting a wave deformation mechanism inside the second testing box 3 to simulate the tensile deformation of the fabric 27 during actual use.

[0085] The second detection box 3 is equipped with two sets of wave deformation units, each consisting of two second fixed platforms 23, spaced 400mm apart. A connecting strip 24 is fixed to the top using M8 bolts. The connecting strip 24 is made of spring steel, with sinusoidal wave grooves 26 on its surface, a wavelength of 50mm, and an amplitude of ±10mm. Multiple third suction cups 25 are equidistantly embedded in the bottom 261 of the grooves. By controlling the suction sequence through a program, a standard sinusoidal waveform can be formed.

[0086] Fabric 27 is output through the unwinding mechanism, passes through the first inspection box 2 and the second inspection box 3 in sequence, and enters the third inspection box 4 after passing around the guide roller 6.

[0087] When the fabric 27 moves to the second detection box 3, the PLC controller 8 activates the third suction cup 25, causing the fabric 27 to form a wave-like deformation.

[0088] Multiple cameras 11 inside the second detection box 3 scan along the wave direction to capture color difference changes in the deformed area of ​​the fabric 27.

[0089] The detection data is displayed in real time on the monitor 5 and stored in the database of the controller 8.

[0090] Example 4

[0091] This embodiment integrates three detection modes: columnar torsion, bowl-shaped indentation, and wave deformation. The PLC controller 8 enables programmed switching, making it suitable for online detection of various nonwoven fabrics.

[0092] Composite deformation mechanism:

[0093] The second detection box 3 is equipped with:

[0094] Four sets of columnar twisted units (Example 1);

[0095] Two sets of bowl-shaped recessed units (Example 2);

[0096] Two sets of wave deformation units (Example 3);

[0097] Controller 8 uses a Siemens S7-1200 PLC and connects to each actuator via a Profinet bus. The human-machine interface uses a Weintek MT8102iE touchscreen and has a dedicated detection program with the following functions:

[0098] Deformation mode selection: Three preset detection modes are available for clothing fabrics, industrial fabrics, and medical fabrics;

[0099] Defect marking system: When ΔE≥0.8 is detected, a red box mark is generated on display 5;

[0100] Data traceability function: Stores the RGB values, deformation parameters and timestamps for each detection.

[0101] When in use, one end of the fabric on the unwinding mechanism is passed through the first detection box 2 and the second detection box 3 in sequence, and then around the guide roller 6 and into the third detection box 4 and fixed on the winding mechanism 7.

[0102] The winding mechanism 7 is activated to tighten the fabric, and multiple cameras 11 in the first detection box 2 are activated to detect the color difference of the fabric. After the detection is completed, the winding mechanism 7 is activated to wind up the fabric, causing the fabric to move.

[0103] When the fabric moves into the second detection box 3, one set of first suction cups 14 is activated to fix the fabric, and the corresponding cylinder 16 is activated to extend. During the extension of the cylinder 16, the sliding rod 15 can be driven to move upward. During the upward movement of the sliding rod 15, the sliding rod 15 can be rotated while moving upward by utilizing the cooperation of the sliding column 18 and the spiral groove 17. Since multiple first suction cups 14 fix the fabric on the torsion table 13 at the same time, the upward rotation can drive the fabric to slowly twist, making the fabric into a cylindrical fold. The corresponding camera 11 is activated to perform detection. Due to the fold of the fabric, the camera 11 can perform multi-directional and multi-angle detection to avoid reducing the detection accuracy due to light reflection.

[0104] When the inspected fabric is moved into the third inspection box 4, the front of the fabric is facing down, and multiple cameras 11 in the third inspection box 4 are activated to perform inspection.

[0105] The pleating mechanism can adopt various shapes to simulate fabric deformation under different usage conditions, such as columnar twisting, bowl-shaped depression, or wave shape, depending on the testing requirements. Columnar twisting is achieved through a torsion table and suction cups, bowl-shaped depression is formed using a groove structure, and wave shape is achieved using wave grooves.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A new material non-woven fabric printing and dyeing color difference detection device, comprising a base (1), a first detection box (2), a second detection box (3) and a third detection box (4) are sequentially arranged on the base (1) along the conveying direction of the fabric (27), characterized in that: a detection platform (12) and a plurality of cameras (11) are arranged in the first detection box (2) and the third detection box (4), and a wrinkle mechanism is arranged in the second detection box (3); the wrinkle mechanism comprises at least one twisting table (13) and a driving assembly, a plurality of first suction cups (14) are embedded on the top of the twisting table (13), and the driving assembly drives the twisting table (13) to rise and rotate to make the fabric (27) form a columnar twist; a guide roller (6) is rotatably arranged on the base (1), and a winding mechanism (7) is fixedly connected to the base (1), and the winding mechanism (7) is located between the second detection box (3) and the third detection box (4); wherein the camera (11) of the first detection box (2) detects the front of the fabric (27), the camera (11) of the third detection box (4) detects the back of the fabric (27) after passing through the guide roller (6), and the camera (11) of the second detection box (3) detects the fabric (27) in a columnar twisted state.

2. The nonwoven fabric printing and dyeing color difference detection device according to claim 1, characterized in that, the driving assembly comprises: a cylinder (16) fixed in the base (1); a sliding rod (15) welded with the piston rod of the cylinder (16), the top end of the sliding rod (15) is welded with the twisting table (13); a fixed ring (19) sleeved on the sliding rod (15), the fixed ring (19) is fixed on the top of the base (1); wherein the outer wall of the sliding rod (15) is provided with a spiral groove (17), and the fixed ring (19) is fixedly provided with a sliding column (18) which is in sliding fit with the spiral groove (17).

3. The nonwoven fabric printing and dyeing color difference detection device according to claim 2, characterized in that, a mounting seat (10) is arranged in the first detection box (2), the second detection box (3) and the third detection box (4), the camera (11) is fixed on the mounting seat (10) by bolts, and the cameras (11) in the first detection box (2) and the third detection box (4) are arranged in V-shaped double rows staggered above the detection platform (12).

4. The nonwoven fabric printing and dyeing color difference detection device according to claim 3, characterized in that, the wrinkle mechanism further comprises: a first fixed table (20) fixed on the top of the base (1), a recess (21) is formed on the top of the first fixed table (20); a second suction cup (22) arranged in the recess (21) adsorbs the fabric (27) to form a bowl-shaped depression.

5. The nonwoven fabric printing and dyeing color difference detection device according to claim 4, characterized in that, the wrinkle mechanism further comprises: two second fixed tables (23) fixed on the top of the base (1); a connecting strip (24) connecting the two second fixed tables (23), a wave groove (26) is formed on the top of the connecting strip (24); a third suction cup (25) arranged at the bottom of the wave groove (26) adsorbs the fabric (27) to form a wave shape.

6. The nonwoven fabric printing and dyeing color difference detection device according to claim 5, characterized in that, the winding mechanism (7) comprises a servo driving system and a tension control system, and the tension control system keeps the tension of the fabric (27) at 7±0.5N.

7. The nonwoven fabric printing and dyeing color difference detection device according to claim 6, characterized in that, the detection platform (12) is a light-transmitting acrylic plate, and a LED surface light source with color temperature of 5000K and color rendering index CRI≥95 is arranged below the detection platform (12).

8. The nonwoven fabric printing and dyeing color difference detection device according to claim 7, characterized in that, The guide roller (6) is rotatably arranged on the base (1) through a self-lubricating bearing, and its radial runout is less than or equal to 0.02 mm.

9. The apparatus for detecting color difference in printing and dyeing of nonwoven fabric of a new material according to claim 8, characterized in that, The side walls of the first detection box (2), the second detection box (3) and the third detection box (4) are each provided with a rectangular port (9) with a wear-resistant strip.

10. A detection method based on the non-woven fabric printing and dyeing color difference detection device of the new material of claim 9, characterized in that, The method comprises the following steps: S1, cloth threading and tensioning: the cloth end of the unwinding mechanism is sequentially threaded through the first detection box (2), the second detection box (3), and then threaded into the third detection box (4) through the guide roller (6) and fixed to the winding mechanism (7); the winding mechanism (7) is started to tighten the cloth; S2, planar color difference detection: a plurality of cameras (11) in the first detection box (2) are started to detect the surface color difference of the stationary cloth; after the detection is completed, the winding mechanism (7) is driven to move the cloth; S3, dynamic wrinkle detection: when the cloth enters the second detection box (3): S31, start the selected group of first suction cups (14) to adsorb and fix the cloth; S32, drive the corresponding cylinder (16) to push the sliding rod (15) to go up; S33, through the cooperation of the sliding column (18) and the spiral groove (17), the sliding rod (15) is lifted and rotated at the same time; S34, drive the twisting table (13) to twist the cloth into a cylindrical wrinkle state; S35, start the camera (11) to perform multi-angle defect detection; S46, reverse side state detection: when the cloth moves to the third detection box (4) and the front side is downward, start the camera (11) in the box to detect the cloth surface state; S5, wrinkle pattern expansion: the wrinkle mechanism of step S3 is replaced by: S51, bowl-shaped recess mechanism: recessed wrinkles are formed through a groove structure; S52, wave-shaped mechanism: continuous wave wrinkles are formed through a wave groove; S53, columnar twisting mechanism: columnar wrinkles are formed through the twisting table (13) and the first suction cup (14).

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