Defect detection device based on textile fabric

Abstract

The invention provides a defect detection device based on textile fabric, which relates to the field of fabric detection and comprises a frame-shaped base, a support roller, a tension roller and a detection assembly. According to the textile fabric production / processing equipment, by designing the frame-shaped base, the supporting rollers, the tensioning roller and the detection assembly, when the textile fabric production / processing equipment is used, textile fabric is wound in an inverted n shape from the position above the two supporting rollers and the position below the tensioning roller, and when the textile fabric production / processing equipment runs, the textile fabric moves linearly; the detection assembly intermittently / continuously obtains images of the side faces of the textile fabric on the two sides and transmits the images to an output processing module (a computer carrying a fabric defect detection algorithm), so that automatic defect detection of the textile fabric is achieved, the structure formed by the two supporting rollers and the tensioning roller can keep the detected portion of the textile fabric in a flat state all the time, and the detection accuracy is improved. It is guaranteed that the image obtained by the detection assembly has high quality, and the actual requirement of detection is met.

Description

Technical Field

[0001] The present invention relates to visual inspection of textile fabrics, in particular to the field of fabric inspection, and is a defect detection device based on textile fabrics. Background Art

[0002] The textile industry is a key pillar of the national economy. Fabric, as a core product, directly impacts the quality of downstream products such as apparel, home textiles, and industrial fabrics. With rising consumer demand for textile quality and the advancement of intelligent manufacturing, textile companies are increasingly demanding defect detection during fabric production. Traditional manual inspection methods are inefficient, costly, and susceptible to subjective factors, making them unable to meet the high-precision and high-speed requirements of modern textile production.

[0003] Existing fabric defect detection devices use technical solutions based on machine vision or optical sensing. For example, a CCD camera is used to capture fabric images and defects are identified in combination with image processing algorithms. When machine vision or optical sensing is used to obtain fabric images, the fabric generally needs to be kept flat. Newly developed fabric production equipment has reserved space for installing fabric defect detection devices, but many currently in service equipment cannot be equipped with such devices. Therefore, the present invention provides a defect detection device based on textile fabrics. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a defect detection device based on textile fabrics, which solves the problem that many currently used equipment cannot be equipped with fabric defect detection modules.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a defect detection device based on textile fabrics, used for performing defect detection on textile fabrics, comprising a frame-shaped base, two sets of parallel and spaced support rollers are installed near the top of the inner side of the frame-shaped base, and a tensioning roller is slidably installed on the inner side of the frame-shaped base, and the tensioning roller is located between the two sets of support rollers; The textile fabric is wound in an inverted "J" shape from above the two sets of support rollers and below the tensioning roller. A detection component is installed on the inner side of the frame base and above the tensioning roller. The detection component performs defect detection on the textile fabrics on both sides.

[0006] Preferably, the frame-shaped base comprises: a long plate, a mounting hole is opened on the upper surface of the long plate, side plates are fixedly mounted on both ends of the long plate, and the two side plates and the long plate form a frame shape; A vertically arranged U-shaped long sliding hole is opened on the side of the side panel, and the side panels located on both sides of the U-shaped long sliding hole form two ears; The tensioning roller is installed on the inner side of the U-shaped long sliding hole, and the supporting roller is installed at the ear position.

[0007] Preferably, the tensioning roller comprises: The shaft head parts are provided with two groups, and the two groups of shaft head parts correspond to the side plate parts respectively. The shaft head parts are arranged on the inner side of the U-shaped long sliding hole, and the end of the shaft head parts located on the inner side of the frame-shaped base is fixedly connected to the flange part, and the end of the shaft head parts located on the outer side of the frame-shaped base is installed with a pressure block and a limiting nut; A shaft member, the end of the shaft member is fixedly mounted to the end of the flange portion, and a cylinder member is rotatably mounted on the outer side of the shaft member; The bottom of the shaft head is fixedly connected with a spring, the bottom end of the spring is fixedly provided with a limiting clamp, and a clamping groove corresponding to the limiting clamp is provided on the inner side of the U-shaped long sliding hole and close to the bottom end of the U-shaped long sliding hole.

[0008] Preferably, the limiting card includes: The short shaft is located inside the spring, and both sides of the short shaft are fixedly connected with a transverse part, the transverse part passes through the gap of the spring, and the transverse part is clamped into the inner side of the clamping groove.

[0009] Preferably, backlight assemblies are fixedly mounted on both sides of the frame-shaped base; The backlight assembly comprises a side frame fixedly mounted on the side of the frame base and a light strip fixedly mounted on the side of the side frame.

[0010] Preferably, the detection component includes: A tie rod, wherein plates are provided at both ends of the tie rod and outside the frame-shaped base, and nuts are threadedly installed on the tie rod and outside the plates; The camera module is fixedly mounted on the tie rod, and a plurality of camera modules are installed at intervals along the length direction of the tie rod.

[0011] Preferably, it further comprises: a marking assembly, wherein the marking assembly is fixedly mounted on the inner bottom of the frame-shaped base, and a plurality of marking assemblies are mounted at equal intervals along the length direction of the frame-shaped base.

[0012] Preferably, the marking assembly comprises: A base, wherein a stepped core hole is formed on the top of the base, and an inner side of the stepped core hole forms a stepped surface facing upward; The core piece includes a ring piece and a pen core, wherein the top end of the ring piece extends outward to form an outer ring portion corresponding to the step surface inside the stepped core hole, the outer ring portion is a magnetic body, and the bottom end of the pen core is fixedly connected to the inner side of the ring piece; An electromagnetic block is embedded on the outside of the base and is annular in shape. The electromagnetic block corresponds to the step surface on the inner side of the step core hole. The cover body is sleeved on the outside of the pen core and is installed on the top of the base with an inverted thread; A liquid supply pipe communicating with the step core hole is provided on the side of the base, and a one-way valve is provided at the connection between the liquid supply pipe and the base.

[0013] Preferably, the top end of the pen core is contracted to form a head, and an outer cover is fixedly provided on the outer side of the pen core; A plurality of fine holes penetrating the upper and lower ends are provided inside the pen core.

[0014] Preferably, the support roller includes a second core shaft and a second sleeve, the second core shaft is fixedly mounted on the ear portion, and the second sleeve is rotatably sleeved on the outside of the second core shaft.

[0015] The present invention provides a defect detection device based on textile fabrics. It has the following beneficial effects: The present invention is designed with a frame-shaped base, support rollers, tensioning rollers, and detection components. When in use, the textile fabric is wound in an inverted "J" shape from above the two sets of support rollers and below the tensioning rollers. When the textile fabric production / processing equipment is in operation, the textile fabric moves linearly, and the detection component intermittently / continuously obtains images of the side surfaces of the textile fabric on both sides, and transmits the images to an output processing module (a computer equipped with a fabric defect detection algorithm), thereby realizing automatic defect detection of the textile fabric. The structure composed of the two support rollers and the tensioning roller can keep the detection part of the textile fabric in a flat state at all times, ensuring that the images obtained by the detection component have high quality and meet the actual detection needs.

[0016] In the present invention, the tensioning roller includes: two shaft head parts, a shaft part, a cylinder part, a spring, and a limiting clamp. In the structure of the tensioning roller, the spring applies a downward pulling elastic force to the shaft head part, so that the tensioning roller has the function of elastically tensioning the textile fabric downward, thereby ensuring that during actual use, the detection part on the textile fabric corresponding to the detection component is in a flat state, meeting the actual needs of fabric image defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a defect detection device based on textile fabrics proposed by the present invention; Figure 2 A perspective view of a defect detection device based on textile fabrics proposed in the present invention (including textile fabrics); Figure 3 This is a front view of a defect detection device based on textile fabrics proposed by the present invention; Figure 4 A top view of a defect detection device based on textile fabrics proposed by the present invention; Figure 5A side view of a defect detection device based on textile fabrics proposed by the present invention; Figure 6 for Figure 4 Sectional view of the section line at AA; Figure 7 for Figure 6 A partial enlarged view of point B in the middle; Figure 8 A three-dimensional diagram of a defect detection device based on textile fabrics proposed in the present invention (without the textile fabrics); Figure 9 This is a three-dimensional schematic diagram of a defect detection device based on textile fabrics proposed by the present invention; Figure 10 This is a three-dimensional schematic diagram of the structure of one end portion of a tensioning roller of a textile fabric defect detection device proposed by the present invention; Figure 11 This is a three-dimensional schematic diagram of a frame-shaped base of a defect detection device based on textile fabrics proposed in the present invention.

[0018] Among them, 1. frame base; 101. long plate; 102. mounting hole; 103. side panel; 104. U-shaped long sliding hole; 105. ear; 106. slot; 2. support roller; 3. tensioning roller; 301. cylinder; 302. shaft; 303. shaft head; 304. flange; 305. pressure block; 306. limiting nut; 307. spring; 308. limiting card; 4. detection component; 401. tension rod; 402. plate frame; 403. camera module; 5. backlight component; 501. side frame; 502. light strip; 6. marking component; 601. base; 602. electromagnetic block; 603. step core hole; 604. cover; 605. pen core; 606. ring; 607. outer cover; 608. fine hole; 7. textile fabric. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0020] like Figures 1-11 As shown, an embodiment of the present invention provides a defect detection device based on textile fabrics, which is used to perform defect detection on textile fabrics 7, belongs to the visual detection direction of textile fabrics, and is directly mounted on the production line of textile fabrics 7. The defect detection device includes a frame base 1, a support roller 2, a tensioning roller 3 and a detection component 4.

[0021] In this embodiment, two groups of support rollers 2 are installed on the inner side of the frame base 1 near the top, and are distributed in parallel and spaced apart. A tensioning roller 3 is slidably installed on the inner side of the frame base 1. The tensioning roller 3 is located between the two groups of support rollers 2. The textile fabric 7 is wound in an inverted "J" shape from above the two groups of support rollers 2 and below the tensioning roller 3. A detection component 4 is installed on the inner side of the frame base 1 and above the tensioning roller 3. The detection component 4 is a machine vision or optical sensor, such as a CCD camera. The detection component 4 is located on the inner side of the textile fabric 7, and the detection component 4 performs defect detection on the textile fabrics 7 on both sides.

[0022] When using the present defect detection device, the frame base 1 is installed on the ground or on the frame of the textile fabric production / processing equipment. When arranging the textile fabric 7, the textile fabric 7 is placed and arranged as described above (the textile fabric 7 is wound in an inverted "J" shape from above the two sets of support rollers 2 and below the tensioning roller 3). When the textile fabric production / processing equipment is running, the textile fabric 7 moves linearly, and the detection component 4 intermittently / continuously obtains images of the side surfaces of the textile fabric 7 on both sides, and transmits the images to the output processing module (a computer equipped with a fabric defect detection algorithm), thereby realizing automatic defect detection of the textile fabric 7. In the present application, the structure composed of the two support rollers 2 and the tensioning roller 3 can keep the detection part of the textile fabric 7 in a flat state at all times, ensuring that the image obtained by the detection component 4 has high quality and meets the actual needs of detection.

[0023] In one embodiment, if Figure 11 As shown in the figure, the frame-type base 1 includes: a long plate 101 and a side plate 103. The upper surface of the long plate 101 is provided with a mounting hole 102 to facilitate the use of bolts / screws to fix the long plate 101. Side plates 103 are fixedly installed at both ends of the long plate 101. The two side plates 103 and the long plate 101 are frame-shaped, and the long plate 101 and the two side plates 103 adopt an integrated structure.

[0024] A vertically arranged U-shaped long sliding hole 104 is provided on the side of the side panel 103, and the top of the U-shaped long sliding hole 104 is open. The tensioning roller 3 is installed on the inner side of the U-shaped long sliding hole 104. The tensioning roller 3 can slide up and down on the inner side of the U-shaped long sliding hole 104. Two ears 105 are formed on the side panel 103 on both sides of the U-shaped long sliding hole 104. A circular mounting hole is provided at the end of the ear 105, and the support roller 2 is installed at the position of the ear 105.

[0025] The purpose of the design of the frame base 1 is to install the support roller 2, the tensioning roller 3 and the detection component 4, and to facilitate the fixing of the frame base 1 to the ground / textile fabric production and processing equipment; that is, to facilitate the installation of the textile fabric defect detection device of this application on the textile fabric production and processing equipment.

[0026] In one embodiment, if Figure 6 、 Figure 10 As shown in FIG, the tensioning roller 3 includes: two shaft head parts 303, a shaft part 302, a cylinder part 301, a spring 307, and a limiting clamp 308.

[0027] There are two groups of shaft head parts 303, which correspond to the side plate parts 103 respectively. The shaft head parts 303 are installed at both ends of the corresponding shaft part 302. The shaft head parts 303 are arranged on the inner side of the U-shaped long sliding hole 104, and the end of the shaft head part 303 located on the inner side of the frame-type base 1 is fixedly connected with the flange part 304. The end of the shaft head part 303 located on the outer side of the frame-type base 1 is installed with a pressure block 305 and a limiting nut 306. The pressure block 305 is sleeved on the shaft head part 303, and the limiting nut 306 is threadedly installed on the shaft head part 303. The limiting nut 306 is located on the outer side of the pressure block 305. The limiting nut 306 limits the pressure block 305 from sliding toward the outside. Figure 10 As shown in the figure, the shaft head piece 303 forms a thinner area segment in the middle, which is stuck in the inner side of the U-shaped long sliding hole 104. The pressure block 305 and the flange portion 304 limit the shaft head piece 303 from sliding left and right relative to the side plate piece 103, so that the shaft head piece 303 can slide up and down relative to the U-shaped long sliding hole 104. The end of the shaft piece 302 is fixedly installed with the end of the flange portion 304, and the outer side of the shaft piece 302 is rotatably installed with a cylinder piece 301, which rotates with the movement of the textile fabric 7. The bottom of the shaft head piece 303 is fixedly connected to a spring 307, and the bottom end of the spring 307 is fixedly provided with a limiting clamp 308. A slot 106 corresponding to the limiting clamp 308 is provided on the inner side of the U-shaped long sliding hole 104 and near the bottom end of the U-shaped long sliding hole 104. The slot 106 cooperates with the limiting clamp 308 to fix the bottom end of the spring 307.

[0028] In the structure of the tensioning roller 3, the spring 307 applies a downward pulling elastic force to the shaft head 303, so that the tensioning roller 3 has the function of elastically tensioning the textile fabric 7 downward, thereby ensuring that during actual use, the detection part on the textile fabric 7 corresponding to the detection component 4 is in a flat state, meeting the actual needs of fabric image defect detection.

[0029] In one embodiment, the limiting clamp 308 includes a short axis and a transverse portion.

[0030] A horizontal part is fixedly connected on both sides of the short shaft. The horizontal part passes through the gap of the spring 307 and is inserted into the inner side of the slot 106. The short shaft is located on the inner side of the spring 307 and is used to keep the spring 307 in a vertical state. After the horizontal part is inserted into the inner side of the slot 106, it can limit the horizontal part from sliding up and down, that is, it limits the horizontal part from sliding up and down, and correspondingly fixes the bottom end of the spring 307.

[0031] In one embodiment, backlight components 5 are fixedly installed on both sides of the frame base 1. The backlight components 5 are used to provide lighting, so that the image obtained by the detection component 4 has higher clarity and better quality, which facilitates subsequent data processing of the image.

[0032] The backlight assembly 5 includes: a side frame 501 fixedly installed on the side of the frame base 1, and a light strip 502 fixedly installed on the side of the side frame 501. The light strip 502 is an LED light. The light strip 502 is in a long strip shape and is distributed along the width direction of the textile fabric 7 to backlight the part of the textile fabric 7 that is in the detection area.

[0033] In one embodiment, the detection assembly 4 includes: a tie rod 401 , a plate frame 402 , and a camera module 403 .

[0034] The cam 403 is fixed on the top of the tie rod 401 and is fixed on the bottom of the tie rod 401. The cam 403 is fixed on the top of the tie rod 401 and is fixed on the bottom of the tie rod 401.

[0035] In one embodiment, it also includes: a marking component 6, which is fixedly installed on the inner bottom of the frame base 1, and the marking component 6 is used to mark the textile fabric 7; when in use, the control module of the marking component 6 is connected to the processing module (a computer equipped with a fabric defect detection algorithm), and the processing module obtains image data from the detection component 4 and processes the image data. When it is determined that the textile fabric 7 has defects, the processing module sends a signal to the control module of the marking component 6, and the control module of the marking component 6 controls the movement of the marking component 6 to mark the defective textile fabric 7, so that when the textile fabric 7 is used subsequently, the defective part can be skipped / cut off.

[0036] Generally, a plurality of marking components 6 are installed at equal intervals along the length direction of the frame base 1. When controlling the plurality of marking components 6, the marking component 6 closest to the defective part of the textile fabric 7 can be controlled to move for marking.

[0037] In one embodiment, if Figure 6、 Figure 7 As shown in FIG, the marking assembly 6 includes: a base 601, a core, an electromagnetic block 602 and a cover 604.

[0038] A step core hole 603 is provided on the top of the base 601, and a step surface facing upward is formed on the inner side of the step core hole 603, that is, the large hole of the step core hole 603 is located above the small hole (so that a step surface facing upward is formed). The core piece includes a ring piece 606 and a pen core 605. The top end of the ring piece 606 extends outward to form an outer ring portion corresponding to the step surface on the inner side of the step core hole 603. The outer ring portion is stuck in the step surface position on the inner side of the step core hole 603. The outer ring portion is a magnetic body. The bottom end of the pen core 605 is fixedly connected to the inner side of the ring piece 606. The pen core 605 is made of traditional fiber material and can absorb a certain amount of liquid (colored coating liquid) and can be painted on the textile fabric 7 to form a mark. The electromagnetic block 602 is embedded in the outer side of the base 601, and the electromagnetic block 602 is annular. The electromagnetic block 602 corresponds to the step surface on the inner side of the step core hole 603. When the electromagnetic block 602 is energized, the magnetic force it generates repels the ring. The outer ring portion of the component 606 pushes the ring member 606 to move upward, so that the top of the pen core 605 is raised. When the textile fabric 7 moves linearly, the top of the pen core 605 forms a marking line on the bottom surface of the textile fabric 7. The cover body 604 is sleeved on the outside of the pen core 605, and the cover body 604 is screwed in reverse on the top of the base 601. The inner diameter of the top small hole of the cover body 604 is smaller than the outer diameter of the outer ring portion of the ring member 606, thereby limiting the upward movement distance of the ring member 606, that is, when the ring member 606 moves upward, it cannot pass the top of the cover body 604. A liquid supply pipe connected to the step core hole 603 is provided on the side of the base 601, and a one-way valve is provided at the connection between the liquid supply pipe and the base 601. A tank containing liquid (colored paint liquid) is provided on the outside. The position of the tank is higher than that of the marking component 6. Under the action of gravity, the liquid can flow along the liquid supply pipe to replenish the liquid inside the step core hole 603.

[0039] In one embodiment, the top of the pen core 605 is contracted to form a head. The head of the pen core 605 is slightly thinner, and a marking line of appropriate thickness is drawn on the textile fabric 7. The lower part of the pen core 605 is designed to be thicker to facilitate the absorption of more liquid (colored coating liquid) for use by the head of the pen core 605. An outer cover 607 is fixedly provided on the outer side of the pen core 605, and a plurality of fine holes 608 are opened inside the pen core 605 with the upper and lower ends passing through. When the pen core 605 moves downward, the liquid inside the step core hole 603 is squeezed, and part of the liquid can be squeezed upward along the fine holes 608 to the top of the pen core 605.

[0040] In one embodiment, the support roller 2 includes a second core shaft and a second sleeve. The second core shaft is fixedly installed with the ear 105. The second sleeve is rotatably sleeved on the outside of the second core shaft. The second sleeve can rotate along the linear movement direction of the textile fabric 7 to ensure the movement requirements of the textile fabric 7.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A defect detection device based on textile fabrics, for detecting defects in textile fabrics (7), comprising a frame-type base (1), characterized in that: Two groups of support rollers (2) are installed on the inner side of the frame-shaped base (1) near the top end thereof and are spaced apart in parallel. A tensioning roller (3) is slidably installed on the inner side of the frame-shaped base (1), and the tensioning roller (3) is located between the two groups of support rollers (2). The textile fabric (7) is wound from above the two sets of support rollers (2) and below the tensioning roller (3) in an inverted "J" shape, and a detection component (4) is installed on the inner side of the frame-shaped base (1) and above the tensioning roller (3); The detection component (4) performs defect detection on the textile fabrics (7) on both sides.

2. The defect detection device based on textile fabrics according to claim 1, characterized in that: The frame-shaped base (1) comprises: a long plate (101), a mounting hole (102) is provided on the upper surface of the long plate (101), side plates (103) are fixedly mounted on both ends of the long plate (101), and the two side plates (103) and the long plate (101) are frame-shaped; A vertically arranged U-shaped long sliding hole (104) is provided on the side surface of the side plate (103), and two ears (105) are formed on the side plate (103) located on both sides of the U-shaped long sliding hole (104); The tensioning roller (3) is installed on the inner side of the U-shaped long sliding hole (104), and the supporting roller (2) is installed at the ear (105) position.

3. The defect detection device based on textile fabrics according to claim 2, characterized in that: The tensioning roller (3) comprises: Axle head parts (303), two groups of shaft head parts (303) are provided, and the two groups of shaft head parts (303) correspond to the side plate parts (103) respectively. The shaft head parts (303) are provided on the inner side of the U-shaped long sliding hole (104), and the end of the shaft head part (303) located on the inner side of the frame-shaped base (1) is fixedly connected to the flange part (304), and the end of the shaft head part (303) located on the outer side of the frame-shaped base (1) is installed with a pressure block (305) and a limiting nut (306); A shaft member (302), the end of the shaft member (302) being fixedly mounted to the end of the flange portion (304), and a cylinder member (301) being rotatably mounted on the outer side of the shaft member (302); The bottom of the shaft head (303) is fixedly connected to a spring (307), the bottom end of the spring (307) is fixedly provided with a limiting clamp (308), and a clamping groove (106) corresponding to the limiting clamp (308) is provided on the inner side of the U-shaped long sliding hole (104) and close to the bottom end of the U-shaped long sliding hole (104).

4. The defect detection device based on textile fabrics according to claim 3, characterized in that: The limiting card (308) includes: A short shaft is located inside the spring (307), and both sides of the short shaft are fixedly connected with a transverse portion, the transverse portion passes through the gap of the spring (307), and the transverse portion is clamped into the inner side of the clamping groove (106).

5. The textile fabric defect detection device according to claim 1, characterized in that: Backlight components (5) are fixedly mounted on both sides of the frame-shaped base (1); The backlight assembly (5) comprises: a side frame member (501) fixedly mounted on the side of the frame-shaped base (1), and a light strip (502) fixedly mounted on the side of the side frame member (501).

6. The defect detection device based on textile fabrics according to claim 1, characterized in that: The detection component (4) comprises: A tie rod (401), wherein a plate frame (402) is provided at both ends of the tie rod (401) and located outside the frame-shaped base (1), and a nut is threadedly installed on the tie rod (401) and located outside the plate frame (402); A camera module (403) is fixedly mounted on the tie rod (401), and a plurality of camera modules (403) are installed at intervals along the length direction of the tie rod (401).

7. The defect detection device based on textile fabrics according to claim 1, characterized in that: Also includes: A marking assembly (6) is fixedly mounted on the inner bottom of the frame-shaped base (1), and a plurality of marking assemblies (6) are mounted at equal intervals along the length direction of the frame-shaped base (1).

8. The defect detection device based on textile fabrics according to claim 7, characterized in that: The marking assembly (6) comprises: A base (601), wherein a stepped core hole (603) is provided on the top of the base (601), and an inner side of the stepped core hole (603) forms a stepped surface facing upward; a core piece, the core piece comprising a ring piece (606) and a pen core (605); the top end of the ring piece (606) extends outward to form an outer ring portion corresponding to the stepped surface inside the stepped core hole (603); the outer ring portion is a magnetic body; the bottom end of the pen core (605) is fixedly connected to the inner side of the ring piece (606); An electromagnetic block (602), the electromagnetic block (602) is embedded on the outside of the base (601), and the electromagnetic block (602) is annular, and the electromagnetic block (602) corresponds to the step surface on the inside of the step core hole (603); A cover (604), wherein the cover (604) is sleeved on the outside of the pen core (605), and the cover (604) is mounted on the top of the base (601) with an inverted thread; A liquid supply pipe communicating with the step core hole (603) is provided on the side of the base (601), and a one-way valve is provided at the connection between the liquid supply pipe and the base (601).

9. The textile fabric defect detection device according to claim 8, characterized in that: The top end of the pen core (605) is contracted to form a head, and an outer cover (607) is fixedly provided on the outer side of the pen core (605); The pen core (605) is provided with a plurality of fine holes (608) penetrating the upper and lower ends.

10. The textile fabric defect detection device according to claim 2, characterized in that: The support roller (2) comprises a second core shaft and a second sleeve, the second core shaft is fixedly mounted on the ear portion (105), and the second sleeve is rotatably sleeved on the outside of the second core shaft.

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