A new material fabric flaw detection device and method

Abstract

The application discloses a new material fabric flaw detection equipment and a detection method, which comprises a rack with a conveying roller group, two groups of supports are detachably installed on the rack, the support comprises a guide rail which can move horizontally, an industrial camera is fixed on the guide rail, the shooting direction of the industrial camera is perpendicular to the cloth surface of the fabric, a portal frame which crosses the fabric is fixed on the rack, the portal frame comprises two groups of cross beams which are respectively arranged on the upper and lower sides of the cloth surface of the fabric and can vertically lift, two groups of reflection assemblies are further included, the reflection assembly comprises a mounting frame which is detachably connected with the rack and the cross beam and can be angle-adjusted, and a mirror is fixed on the mounting frame, only two industrial cameras are needed, and double-sided flaw detection of the cloth can be completed, the hardware cost is greatly reduced, and the complexity of system calibration is obviously simplified.

Description

Technical Field

[0001] This invention relates to the field of new material fabric testing technology, and in particular to a new material fabric defect detection device and detection method. Background Technology

[0002] In the textile manufacturing industry, fabric defect detection is a core step in ensuring the quality of end products. As the industry's requirements for the appearance and physical properties of fabrics increase, defects such as holes or broken warp threads will significantly weaken the market competitiveness of products.

[0003] While machine vision-based automated inspection technology has gradually replaced manual labor, utilizing the high resolution and high frame rate of industrial cameras to achieve high-speed online quality inspection, existing inspection solutions have significant limitations when handling novel high-performance fiber fabrics. Conventional inspections often employ single-sided backlighting or front lighting, relying on light transmission or fabric reflection for imaging.

[0004] When faced with new materials such as carbon fiber prepreg, aramid honeycomb fabric, high-density microfiber synthetic leather, or composite coated light-blocking fabric, light has difficulty penetrating or generates strong reflection interference, making it impossible for traditional single cameras to simultaneously inspect both sides. To cover wide-width fabrics and double-sided inspection requirements, existing technologies have to employ a large number of camera arrays, significantly increasing equipment hardware costs and system calibration complexity.

[0005] To address this, we designed a new material fabric defect detection device and method. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that traditional single cameras cannot detect both the front and back sides in the prior art, and to propose a new material fabric defect detection device and detection method.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A new material fabric defect detection device includes a frame with a conveyor roller assembly. Two sets of supports are detachably mounted on the frame. Each support includes a guide rail that can move horizontally. An industrial camera is fixed on the guide rail. The camera's imaging direction is perpendicular to the fabric surface. A gantry frame spanning the fabric is fixed on the frame. The gantry frame includes two sets of crossbeams that are respectively placed on the upper and lower sides of the fabric surface and can be vertically raised and lowered. It also includes two sets of reflective components, each comprising a mounting bracket that is detachably connected to the frame and crossbeam and is angle-adjustable, and a reflector fixed on the mounting bracket. The two sets of the aforementioned reflective components are fixedly installed on the crossbeam, and the two sets of the mounting brackets are angled so that the reflectors form a V-shaped first detection state with two openings facing the industrial camera; The two sets of the aforementioned reflective components are fixedly installed on the same side of the frame, so that the reflector forms a V-shaped second detection state with the opening facing the industrial camera; The two sets of reflective components are fixedly installed on both sides of the frame, so that the two reflectors are tilted away from each other and facing the third detection state of the industrial camera.

[0008] Preferably, the mounting bracket includes two sets of hinged and fixable frames, and the reflector is fixed to the frames; Both ends of the mounting bracket are fitted with bolt and nut assemblies. The mounting bracket also includes a connecting seat, which is detachably connected to the frame. The connecting seat is rotatably connected to the bolt and nut assemblies.

[0009] Preferably, the gantry includes uprights fixed to the frame and placed on both sides of the fabric, the crossbeam is slidably connected to the uprights, and the crossbeam is threaded with two locking bolts that abut against the uprights; The crossbeam has a strip-shaped hole extending along the width of the fabric. A mounting seat is provided on the side of the crossbeam closest to the fabric. A locking bolt three is threaded onto the mounting seat. The bolt part of the locking bolt three passes through the strip-shaped hole, and its head abuts against the side of the crossbeam away from the mounting seat. The bolt and nut assembly is rotatably and detachably mounted on the mounting base.

[0010] Preferably, the frame is fixed with one fixed seat 1, two fixed seats 2 and one fixed seat 3. The two fixed seats 2 are distributed on both sides of the fabric width direction and are placed directly below the crossbeam. The fixed seat 1 and the fixed seat 3 are arranged opposite each other. The second and third fixing seats are placed on both sides of the fabric width direction, and the second fixing seat is detachably equipped with a support seat. The connecting seat, fixed seat three, and support seat are detachably connected; the bracket is detachably connected to fixed seat one and fixed seat two.

[0011] Preferably, the bracket includes a support arm that is detachably connected to a first fixed base and a second fixed base. The top of the support arm is fixed with a slider having a locking bolt, and the guide rail slides on the slider.

[0012] Preferably, one side of the mounting frame is rotatably connected to two chain plates, and the other side of the frame is threaded with multiple locking bolts. The chain plates are provided with multiple mounting holes corresponding to the locking bolts.

[0013] Preferably, the mounting base has a mounting port one with an open structure on one side, and the connecting base has a mounting port two with an open structure on one side.

[0014] Preferably, a gear is coaxially fixed at the end of the bolt and nut assembly away from the nut.

[0015] Preferably, the reflector includes a plane mirror and a concave mirror.

[0016] A detection method for a new material fabric defect detection device, comprising the following steps: First detection status: S1. Fix the two sets of support arms to the two mounting bases on both sides of the frame, so that the two industrial cameras are facing each other. S2. Install the bolt and nut assembly on the mounting base so that the two sets of mounting brackets are placed on the upper and lower sides of the fabric surface, and the reflector faces the fabric surface. S3. Slide the mounting base to adjust the included angle of the two reflectors on the same side and fix them. Adjust the height distance between the reflector and the fabric by lifting the crossbeam. Slide the industrial camera horizontally so that the industrial camera can acquire the full image of the fabric reflected by the reflector and complete the first inspection state assembly. S4. The fabric is conveyed by a set of conveyor rollers, and two sets of industrial cameras acquire images of the upper and lower surfaces of the fabric after it is reflected by a mirror. Second detection status: S5. Remove the mounting bracket from the crossbeam, adjust the mounting bracket so that the two reflectors on it are coplanar, and then fix it. S6. Install the bolt and nut assembly on one side of the mounting bracket onto the connecting seat, and fix the connecting seat onto the fixing seat three. At the same time, place the two sets of mounting brackets on the upper and lower sides of the fabric respectively, and have the reflector facing the fabric surface. S7. Disassemble the support arm and position the industrial camera directly opposite the mounting frame. Adjust the angle between the two sets of mounting frames and the horizontal position of the industrial camera so that the industrial camera can acquire images of the upper and lower surfaces of the fabric after reflection by the mirror. Fix the mounting frame on the connecting seat to complete the assembly of the second detection state. S9. The fabric is conveyed by a set of conveyor rollers, and a set of industrial cameras acquires images of the upper and lower surfaces of the fabric after it is reflected by a reflector. Third detection status: S10. In the second detection state, remove the mounting bracket at the bottom of the fabric from the fixing seat three; S11. The removed mounting bracket is fixed to the second mounting bracket on the side of the first mounting bracket by the support bracket, and the reflectors are all facing the upper surface of the fabric, so that the two sets of mounting brackets are tilted in opposite directions. S12. Adjust the angles of the two sets of mounting brackets and the fabric, as well as the horizontal position of the industrial camera, so that the industrial camera can acquire the fabric image reflected by the mirror and complete the assembly of the third detection state. S13. The fabric is conveyed by a set of conveyor rollers, and two sets of industrial cameras acquire single-sided images of the fabric after it has been reflected by a mirror from both sides of the fabric width direction.

[0017] The beneficial effects of this invention are as follows: This invention utilizes a detachable connection between the reflective component and the frame and crossbeam, and adapts the shape of the reflective component to different configurations. Combined with changes in the relative position of the support and frame, this allows the detection device to switch between three operating modes. Furthermore, by adjusting the horizontal position of the industrial camera and the lifting height of the crossbeam, the device achieves compatibility with fabrics of different widths. This invention requires only a maximum of two industrial cameras to complete double-sided defect detection of fabrics, significantly reducing hardware costs while greatly simplifying the complexity of system calibration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first detection state structure of a new material fabric defect detection device proposed in this invention; Figure 2 This is a schematic diagram of the first detection state of a new material fabric defect detection device proposed in this invention. Figure 3 This is a schematic diagram of the overall second detection state structure of a new material fabric defect detection device proposed in this invention; Figure 4 This is a schematic diagram of the second detection state of a new material fabric defect detection device proposed in this invention. Figure 5 This is a schematic diagram of the overall third detection state structure of a new material fabric defect detection device proposed in this invention; Figure 6 This is a schematic diagram of the third detection state of a new material fabric defect detection device proposed in this invention; Figure 7 This is a schematic diagram of the frame structure of a new material fabric defect detection device proposed in this invention; Figure 8 This is a schematic diagram of the support structure of a new material fabric defect detection device proposed in this invention; Figure 9 This is a schematic diagram of the reflective component structure of a new material fabric defect detection device proposed in this invention; Figure 10 This is an exploded view of the reflective component of a novel material fabric defect detection device proposed in this invention. Figure 11 This is a schematic diagram of the gantry structure of a new material fabric defect detection device proposed in this invention.

[0019] In the diagram: 10. Frame; 11. Fixed base one; 12. Fixed base two; 13. Support base; 14. Conveyor roller assembly; 15. Fixed base three; 20. Bracket; 21. Support arm; 22. Slider; 221. Locking bolt one; 23. Guide rail; 30. Gantry frame; 31. Column; 32. Horizontal beam; 321. Locking bolt two; 322. Strip hole; 33. Mounting base; 331. Locking bolt three; 332. Mounting port one; 40. Industrial cameras; 50. Reflector assembly; 51. Mounting bracket; 511. Locking bolts (four); 52. Reflector; 53. Bolt and nut assembly; 531. Gear; 54. Chain plate; 541. Mounting hole; 55. Connecting seat; 551. Mounting port (two). Detailed Implementation

[0020] Reference Figure 1 - Figure 11 A novel material fabric defect detection device includes a frame 10 with a conveyor roller assembly 14. The conveyor roller assembly 14 includes a guide roller, a tension roller, a roll roller, and a drive motor that drives the roll roller. This is well-known in the relevant technical field. The area between two guide rollers is the defect detection area, which will not be elaborated upon here. Two sets of brackets 20 are detachably mounted on the frame 10. Each bracket 20 includes a horizontally movable guide rail 23, on which an industrial camera 40 is fixed. The brackets 20 are detachably connected to the frame 10, allowing the brackets 20 to be moved to different positions, thereby changing the position of the industrial camera 40. 0. In different detection states, the imaging direction of the industrial camera 40 is perpendicular to the fabric surface. The industrial camera 40 moves linearly horizontally along the width direction of the fabric following the guide rail 23 to adjust the distance between the industrial camera 40 and fabrics of different widths. It is worth noting that the fabric in the detection area is horizontally arranged at the position of the symmetrical line of the imaging direction of the industrial camera 40. When the industrial camera 40 is used for double-sided detection, it also acts as a dividing line. When the defect point is above the fabric (dividing line), the defect point is the upper surface of the fabric. When the defect point is below the fabric (dividing line), the defect point is the lower surface of the fabric. A gantry frame 30 spanning the fabric is fixed on the frame 10 (see reference). Figure 1 and Figure 11 As shown), the gantry frame 30 includes two sets of crossbeams 32 that are placed on the upper and lower sides of the fabric surface and can be vertically raised and lowered. The distance between the crossbeams 32 and the fabric surface can be adjusted by vertically raising and lowering the crossbeams 32 along the direction of the fabric surface. It also includes two sets of reflective components 50. Each reflective component 50 includes a mounting frame 51 that is detachably connected to the frame 10 and the crossbeam 32 and is angle-adjustable, and a reflector 52 fixed on the mounting frame 51. The reflector 52 faces the fabric surface. By detaching and detaching the reflective component 50 from the frame 10 and the crossbeam 32 and changing the shape of the reflective component 50, and by detaching and detaching the bracket 20 from the frame 10, the whole system can have three detection states. The three detection states can use a maximum of two industrial cameras 40 to realize double-sided defect detection of the fabric, thereby greatly reducing the hardware cost of the equipment and the complexity of system calibration. For wide fabrics (when the industrial camera 40 cannot fully capture the image reflected by the reflector 52), two sets of reflective components 50 are fixedly installed on the two crossbeams 32 on the upper and lower sides of the fabric, respectively. The two sets of mounting brackets 51 are adjusted at the angle so that the mounting brackets 51 bulge towards the fabric and the openings face outwards in a V-shape. The two reflectors 52 on the same side then form two V-shaped first detection states with the openings facing the industrial camera 40 (refer to...). Figure 2 As shown), the image area reflected by the two mirrors 52 on the same side is the detection area 1 (as shown). Figure 2 In the J1 area), at this time, the two sets of industrial cameras 40 acquire images to ensure the completeness of the wide fabric images acquired by the industrial cameras 40; For narrow fabrics (where one set of industrial cameras 40 can fully acquire the image of the fabric reflected by the reflector 52), two sets of reflective components 50 are fixedly installed on the same side of the frame 10, and the reflectors 52 are respectively placed on the upper and lower sides of the fabric, with the mirror surfaces facing the fabric, so that the reflectors 52 form a V-shaped second detection state with the opening facing the industrial camera 40 (refer to...). Figure 4 As shown), the image area reflected by the two sets of mirrors 52 is the detection area 2 (e.g. Figure 4 In the J2 area of ​​the fabric, by adjusting the angle between the reflector 52 and the fabric, and by adjusting the horizontal position of the industrial camera 40 corresponding to its opening, the industrial camera 40 can acquire the reflected image. At this time, by using a set of industrial cameras 40 and reflecting the image through the reflector 52, single-camera double-sided defect detection can be achieved. Since images are easier to acquire closer to the fabric with the tilted reflector 52, but harder to acquire when the fabric is farther away from the reflector 52, to avoid this problem, when it is necessary to detect defects on one side of a wide fabric, the two sets of reflective components 50 are fixedly installed on both sides of the frame 10, so that the two reflectors 52 are tilted away from each other and facing the industrial camera 40 in the third detection state (refer to...). Figure 6 As shown) At this time, the image area of ​​the fabric reflected by the two mirrors 52 is the detection area 3 (e.g. Figure 6 In the J3 area, two sets of industrial cameras 40 are used to detect defects on both edges of the fabric in the width direction to avoid missed detection. At the same time, the overlapping parts of the two J3 areas can also be re-inspected, which not only avoids missed detection but also improves the defect detection efficiency through re-inspection.

[0021] Reference Figure 9 and Figure 10 As shown, the mounting frame 51 includes two sets of frames that are hinged and fixed together by multiple hinges. The reflector 52 is fixed on the frame. The hinge of the two sets of frames allows for adjustment of the angle (coplanar or V-shaped) of the two reflectors 52 on the mounting frame 51. Both ends of the mounting frame 51 are fitted with bolt and nut assemblies 53, which pass through the ear plates at both ends of the mounting frame 51. At the same time, the bolts of the bolt and nut assembly 53 are also fitted with support sleeves placed between the two ear plates. The mounting frame 51 also includes a connecting seat 55, which is detachably connected to the frame 10 by bolts. The connecting seat 55 and the bolt and nut assembly 53 are rotatably and detachably connected. The bolts of the bolt and nut assembly 53 are rotatably connected to the connecting seat 55, so that the mounting frame 51 can rotate around the bolt and nut assembly 53 as the axis to adjust the angle with the fabric. After adjustment, the nuts of the bolt and nut assembly 53 are tightened, and the mounting frame 51 is fixed on the connecting seat 55 under friction and / or compression force.

[0022] Reference Figure 11 The gantry frame 30 includes uprights 31 fixed on the frame 10 and placed on both sides of the fabric. The uprights 31 are placed on both sides of the frame 10. A crossbeam 32 is slidably connected to the uprights 31, so that the crossbeam 32 spans across the width of the fabric. The crossbeam 32 is adjusted up and down along the uprights 31, thereby realizing the lifting and lowering adjustment of the crossbeam 32 and the mounting bracket 51 fixed on it. After adjustment, the crossbeam 32 is locked and fixed by the locking bolts 321 that abut against the uprights 31 through the threaded connection on the crossbeam 32. A strip hole 322 extending along the width of the fabric is provided on the crossbeam 32. A mounting seat 33 is provided on the side of the crossbeam 32 near the fabric. A locking bolt 331 is threadedly connected to the mounting seat 33. The bolt part of the locking bolt 331 passes through the strip hole 322, and its head abuts against the side of the crossbeam 32 away from the mounting seat 33. The bolt and nut assembly 53 is rotatably and detachably mounted on the mounting base 33. The two ends of the mounting bracket 51 are mounted on two mounting bases 33 on the same side by means of the bolt and nut assembly 53. The two mounting bases 33 slide along the strip hole 322 relative to each other or apart to adjust the included angle of the two frames. After adjustment, the mounting bracket 51 is fixed on the mounting base 33 by means of the bolt and nut assembly 53. The mounting base 33 is fixed on the crossbeam 32 by tightening the locking bolt 331 clockwise, thereby positioning and fixing the mounting bracket 51.

[0023] Reference Figure 7 As shown, a fixing seat 11, two fixing seats 2 12 and a fixing seat 3 15 are welded and fixed on the frame 10. The two fixing seats 2 12 are distributed on both sides of the fabric width direction and are placed directly below the crossbeam 32. The fixing seat 11 and the fixing seat 3 15 are arranged opposite each other. The fixing seat 11 and one of the fixing seats 2 12 are placed on the same side of the frame 10. Fixing base 2 12 and fixing base 3 15 are placed on both sides in the fabric width direction, and fixing base 2 12 is detachably equipped with support base 13. The connecting seat 55 is detachably connected to the fixed seat 15 and the support seat 13 by bolts; the bracket 20 is detachably connected to the fixed seat 11 and the fixed seat 22 by bolts.

[0024] Reference Figure 5 and Figure 8 As shown, the bracket 20 includes a support arm 21 that is detachably connected to the fixed base 11 and the fixed base 22 by bolts. The top of the support arm 21 is fixed with a slider 22 having a locking bolt 221. The locking bolt 221 abuts against the guide rail 23. The guide rail 23 slides on the slider 22 and slides along the slider 22. The guide rail 23 abuts against the guide rail 23 by the locking bolt 221, thus fixing the industrial camera 40 that moves horizontally under friction and / or compressive force.

[0025] Reference Figure 9 As shown, one side of the mounting frame 51 is rotatably connected to two chain plates 54 via a shaft, and the other side of the frame is threaded with multiple locking bolts 511. The chain plates 54 have multiple mounting holes 541 corresponding to the locking bolts 511. When the locking bolts 511 are inserted into the mounting holes 541 and threadedly connected to the frame, the two frames are parallel and the two reflectors 52 are coplanar. By removing the locking bolts 511 from the frame, the two frames can be flipped and adjusted.

[0026] Reference Figure 10 , Figure 11 As shown, the mounting base 33 has a mounting port 332 with one side open, and the connecting base 55 has a mounting port 551 with one side open. The openings are adapted to the outer diameter of the bolts of the bolt and nut assembly 53 to facilitate quick assembly and disassembly of the bolt and nut assembly 53 from the mounting base 33 or the connecting base 55. During installation, the bolts of the bolt and nut assembly 53 are inserted into the mounting port 332 or the mounting port 551 through the openings. At the same time, the wall plate of the mounting base 33 or the connecting base 55 is clamped between the bolt and nut assembly 53 and the ear plate of the mounting bracket 51. Then, by tightening the nuts of the bolt and nut assembly 53, the mounting bracket 51 can be fixed on the connecting base 55 or the mounting base 33.

[0027] Reference Figure 9 and Figure 10 As shown, when the mounting bracket 51 is in the second detection state, the gear 531, which is coaxially fixed at the end of the bolt and nut assembly 53 away from the nut, meshes with each other to facilitate the synchronous adjustment of the two mounting brackets 51 in the second detection state.

[0028] The reflector 52 includes a plane mirror and a concave mirror. In this embodiment, the reflector 52 is preferably a plane mirror.

[0029] It is worth noting that supplementary lighting sources are fixed on the edge of the frame near the reflector 52.

[0030] A detection method for a new material fabric defect detection device, comprising the following steps: First detection status: S1. Fix the two sets of support arms 21 to the fixed bases 12 on both sides of the frame 10 respectively, so that the two industrial cameras 40 are facing each other. S2. Install the bolt and nut assembly 53 on the mounting base 33, so that the two sets of mounting brackets 51 are placed on the upper and lower sides of the fabric surface, and the reflector 52 faces the fabric surface. S3. Adjust the sliding mounting base 33, adjust the included angle of the two reflectors 52 on the same side and fix them, adjust the height distance between the reflector 52 and the fabric surface using the lifting beam 32, and adjust the industrial camera 40 horizontally so that the industrial camera 40 can acquire the full image of the fabric reflected by the reflector 52, and complete the first detection state assembly. S4. The fabric is conveyed by the conveyor roller group 14, and two sets of industrial cameras 40 acquire images of the upper and lower surfaces of the fabric after it is reflected by the reflector 52. Second detection status: S5. Remove the mounting bracket 51 from the crossbeam 32, adjust the mounting bracket 51 so that the two reflectors 52 on it are coplanar, and then fix it. S6. Install the bolt and nut group 53 on one side of the mounting bracket 51 onto the connecting seat 55. The connecting seat 55 is fixed on the fixing seat 3 15. At the same time, the two sets of mounting brackets 51 are placed on the upper and lower sides of the fabric respectively, and the reflector 52 faces the fabric surface. S7. Disassemble the support arm 21 and position the industrial camera 40 directly opposite the mounting bracket 51. Adjust the included angle of the two sets of mounting brackets 51 and the horizontal position of the industrial camera 40 so that the industrial camera 40 can acquire images of the upper and lower surfaces of the fabric after being reflected by the reflector 52. Fix the mounting bracket 51 on the connecting seat 55 to complete the assembly of the second detection state. S9. The fabric is conveyed by the conveyor roller group 14, and a set of industrial cameras 40 acquires images of the upper and lower surfaces of the fabric after it is reflected by the reflector 52. Third detection status: S10. In the second detection state, remove the mounting bracket 51 at the bottom of the fabric from the fixing base 3 15; S11. The removed mounting bracket 51 is fixed to the second mounting bracket 12 on the side close to the first mounting bracket 11 by the support bracket 13, and the reflectors 52 are all facing the upper surface of the fabric, so that the two sets of mounting brackets 51 are tilted in opposite directions. S12. Adjust the angle between the two sets of mounting brackets 51 and the fabric, as well as the horizontal position of the industrial camera 40, so that the industrial camera 40 can acquire the fabric image reflected by the reflector 52 and complete the assembly of the third detection state. S13. The fabric is conveyed by the conveyor roller group 14, and two sets of industrial cameras 40 acquire single-sided images of the fabric after it is reflected by the reflector 52 from both sides of the fabric width direction.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A new material fabric defect detection device, comprising a frame (10) with a conveyor roller assembly (14), characterized in that, Two sets of brackets (20) are detachably mounted on the frame (10). Each bracket (20) includes a guide rail (23) that can move horizontally. An industrial camera (40) is fixed on the guide rail (23). The camera direction of the industrial camera (40) is perpendicular to the fabric surface. A gantry frame (30) spanning the fabric is fixed on the frame (10). The gantry frame (30) includes two sets of crossbeams (32) that are placed on the upper and lower sides of the fabric surface and can be vertically raised and lowered. It also includes two sets of reflective components (50), each of which includes a mounting bracket (51) that is detachably connected to the frame (10) and the crossbeam (32) and is angle-adjustable, and a reflector (52) fixed on the mounting bracket (51). The two sets of the reflective components (50) are fixedly installed on the crossbeam (32), and the two sets of the mounting brackets (51) are adjusted at the angle so that the reflector (52) forms a V-shaped first detection state with two openings facing the industrial camera (40); The two sets of the reflective components (50) are fixedly installed on the same side of the frame (10), so that the reflector (52) forms a V-shaped second detection state with an opening facing the industrial camera (40); The two sets of the reflective components (50) are fixedly installed on both sides of the frame (10), so that the two reflectors (52) are tilted away from each other and facing the third detection state of the industrial camera (40).

2. The new material fabric defect detection device according to claim 1, characterized in that, The mounting bracket (51) includes two sets of hinged and fixable frames, and the reflector (52) is fixed on the frames; Both ends of the mounting bracket (51) are fitted with bolt and nut assemblies (53). The mounting bracket (51) also includes a connecting seat (55). The connecting seat (55) is detachably connected to the frame (10). The connecting seat (55) and the bolt and nut assemblies (53) are rotatable and detachably connected.

3. The new material fabric defect detection device according to claim 2, characterized in that, The gantry (30) includes columns (31) fixed on the frame (10) and placed on both sides of the fabric. The crossbeam (32) is slidably connected to the column (31). The crossbeam (32) is threaded with locking bolts (321) that abut against the column (31). The crossbeam (32) has a strip hole (322) extending along the width of the fabric. A mounting seat (33) is provided on the side of the crossbeam (32) near the fabric. A locking bolt (331) is threaded onto the mounting seat (33). The bolt part of the locking bolt (331) passes through the strip hole (322), and its head abuts against the side of the crossbeam (32) away from the mounting seat (33). The bolt and nut assembly (53) is rotatably and detachably mounted on the mounting base (33).

4. The new material fabric defect detection device according to claim 3, characterized in that, The frame (10) is fixed with a first fixed seat (11), two second fixed seats (12) and a third fixed seat (15). The two second fixed seats (12) are distributed on both sides of the fabric width direction and are placed directly below the crossbeam (32). The first fixed seat (11) and the third fixed seat (15) are arranged opposite each other. The second fixing seat (12) and the third fixing seat (15) are placed on both sides in the width direction of the fabric, and the second fixing seat (12) is detachably equipped with a support seat (13). The connecting seat (55) is detachably connected to the fixed seat three (15) and the support seat (13); the bracket (20) is detachably connected to the fixed seat one (11) and the fixed seat two (12).

5. The new material fabric defect detection device according to claim 4, characterized in that, The bracket (20) includes a support arm (21) that is detachably connected to a first fixed seat (11) and a second fixed seat (12). The top of the support arm (21) is fixed with a slider (22) with a locking bolt (221). The guide rail (23) slides on the slider (22).

6. The new material fabric defect detection device according to claim 2, characterized in that, The mounting bracket (51) has two chain plates (54) rotatably connected to one side of the frame shaft, and multiple locking bolts (511) are threadedly connected to the other side of the frame. Multiple mounting holes (541) corresponding to the locking bolts (511) are provided on the chain plates (54).

7. The new material fabric defect detection device according to claim 3, characterized in that, The mounting base (33) has a mounting port 1 (332) with one side open, and the connecting base (55) has a mounting port 2 (551) with one side open.

8. The new material fabric defect detection device according to claim 2, characterized in that, The bolt and nut assembly (53) has a gear (531) coaxially fixed at the end away from the nut.

9. The new material fabric defect detection device according to claim 1, characterized in that, The reflector (52) includes a plane mirror and a concave mirror.

10. A detection method for a new material fabric defect detection device, characterized in that, The application of the new material fabric defect detection device as described in claim 5 includes the following steps: First detection status: S1. Fix the two sets of support arms (21) to the two fixed seats (12) on both sides of the frame (10) so that the two industrial cameras (40) are facing each other. S2. Install the bolt and nut assembly (53) on the mounting base (33) so that the two sets of mounting brackets (51) are placed on the upper and lower sides of the fabric surface and the reflector (52) faces the fabric surface. S3. Slide the mounting base (33), adjust the included angle of the two reflectors (52) on the same side and fix them, lift the crossbeam (32) to adjust the height distance between the reflector (52) and the fabric, and slide the industrial camera (40) horizontally so that the industrial camera (40) can acquire the full image of the fabric reflected by the reflector (52) and complete the first detection state assembly. S4. The fabric is conveyed by the conveyor roller group (14), and two sets of industrial cameras (40) acquire images of the upper and lower surfaces of the fabric after it is reflected by the reflector (52). Second detection status: S5. Remove the mounting bracket (51) from the crossbeam (32), adjust the mounting bracket (51) so that the two reflectors (52) on it are coplanar, and then fix it. S6. Install the bolt and nut assembly (53) on one side of the mounting bracket (51) onto the connecting seat (55), and fix the connecting seat (55) onto the fixing seat three (15). At the same time, the two sets of mounting brackets (51) are placed on the upper and lower sides of the fabric respectively, and the reflector (52) faces the fabric surface. S7. Disassemble the support arm (21) and position the industrial camera (40) directly opposite the mounting bracket (51). Adjust the angle between the two sets of mounting brackets (51) and the horizontal position of the industrial camera (40) so that the industrial camera (40) can acquire images of the upper and lower surfaces of the fabric after reflection by the reflector (52). Fix the mounting bracket (51) on the connecting seat (55) to complete the assembly of the second detection state. S9. The fabric is conveyed by the conveyor roller group (14), and a group of industrial cameras (40) acquires images of the upper and lower surfaces of the fabric after it is reflected by the reflector (52). Third detection status: S10. In the second detection state, remove the mounting bracket (51) at the bottom of the fabric from the fixing seat three (15); S11. The removed mounting bracket (51) is fixed on the second mounting bracket (12) near the first mounting bracket (11) by the support bracket (13), and the reflectors (52) are facing the upper surface of the fabric, so that the two sets of mounting brackets (51) are tilted in opposite directions. S12. Adjust the angle between the two sets of mounting brackets (51) and the fabric, as well as the horizontal position of the industrial camera (40), so that the industrial camera (40) can acquire the fabric image reflected by the reflector (52) and complete the assembly of the third detection state. S13. The fabric is conveyed by the conveyor roller group (14), and two sets of industrial cameras (40) acquire single-sided images of the fabric after it is reflected by the reflector (52) from both sides of the fabric width direction.

Images