An automatic defect detection device for lace production
By designing an automated defect detection device, using high-definition detection components, magnets, and airbags to clean impurities on the material surface, and automatically ejecting the working roller when defective products are detected, the problem of low detection smoothness in existing technologies is solved, achieving efficient and accurate lace trim detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANTOU JIAYI NEW MATERIALS CO LTD
- Filing Date
- 2025-12-10
- Publication Date
- 2026-05-22
AI Technical Summary
In current lace production, the conveyor rollers cannot quickly eject defective products, increasing the workload of staff and affecting the smoothness of inspection.
Design an automated defect detection device for lace production. The device uses a motor-driven work roller to transport materials, combined with a high-definition detection component and a negative pressure adsorption plate. Magnets and airbags are used to clean the surface of the materials. When defective products are detected, the work roller is automatically ejected by a direct ejection component.
It improves the accuracy and efficiency of testing, ensures that there are no impurities left on the surface of materials, simplifies the handling process of non-conforming products, and enhances the overall smoothness of testing.
Smart Images

Figure CN121446736B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lace surface inspection technology, specifically to an automated defect detection device for lace production. Background Technology
[0002] Lace trim, with its openwork patterns and soft contours, adds a romantic, elegant, or vintage feel to products and is widely used in the clothing industry. During lace production, after material selection, lace is woven and embroidered using warp knitting, weft knitting, or embroidery machines according to the designed pattern, with tension controlled simultaneously to ensure the pattern is regular. After forming, it undergoes pre-shrinking and shaping treatments, followed by correction of dimensional deviations and fixation of the pattern. Then, it is trimmed to remove excess edges. After the lace trim is formed, it needs to be randomly inspected to check for defects in its surface pattern and shape. This necessitates the use of automated defect detection devices for lace production, such as the Chinese utility model patent application CN217033661U, published on 2021-07-22, which describes a lace defect detection device. This device includes a frame, a detection frame, detection components, and a light-shielding component. In use, one or more sets of detection components are set on the guide rails of the frame, and light-shielding plates are placed between adjacent detection components as needed. The number of light sources can be adjusted as required. When adjusting the light source angle, the light shield can be removed. When it is necessary to improve the detection accuracy of the area, light shields need to be installed on both sides of the area. It has the advantages of high adjustability and high detection efficiency. There is also a Chinese utility model patent application with publication number CN215339539U, publication date 2021-12-28, which is a lace trim detection device. During use, it can effectively realize the movement of the front of the lace-trimmed fabric against the flexible base plate to ensure the operator's detection accuracy of lace trim defects. There is also a Chinese utility model patent application with publication number CN221883492U, publication date 2024-10-22, which is a lace trim defect detection device. It can separate two spreading plates outward, thereby quickly completing the dispersion of overlapping fabric, avoiding the problem of stacking during defect detection, which would cause some fabric defects to go undetected. It can also assist in unfolding the stacked fabric, making the fabric unfold more fully.
[0003] During the inspection process, when defective products are found, they need to be removed by staff to avoid confusion with qualified products. If the conveyor roller cannot be quickly ejected after a defective product is found, it will increase the workload of staff in subsequent processing, thus affecting the overall smoothness of the inspection and causing unnecessary trouble for the appearance inspection of lace. Therefore, we propose an automated defect detection device for lace production to solve the above-mentioned problems. Summary of the Invention
[0004] The purpose of this invention is to provide an automated defect detection device for lace production, in order to solve the problem mentioned in the background art that the inability to quickly eject the conveyor roller increases the workload of subsequent processing by workers, thereby affecting the overall smoothness of detection and causing unnecessary trouble for the appearance inspection of lace.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an automated defect detection device for lace production, comprising an operation box, an installation plate bolted to the upper surface of the operation box, an outer plate bolted to the outer wall of the installation plate, a connecting shaft rotatably mounted inside the outer plate, a high-definition detection component mounted on the upper surface of the operation box, a working roller rotatably mounted inside the installation plate, and a negative pressure adsorption plate mounted on the right side of the upper surface of the operation box; a motor bolted to the outer wall of the right-side outer plate, the motor being movably connected to a movable plate via a reciprocating assembly, and an upper connecting plate fixedly connected to the upper surface of the end of the movable plate; a working plate movably connected to the movable plate via a lifting assembly, and nozzles equally spaced on the upper surface of the working plate, and a connecting pipe fixedly connected to the side of the working plate; an outer rod fixedly connected to the outer wall of the installation plate, and a direct-release assembly between the outer rod and the working roller, and adjacent working rollers being connected via pulleys.
[0006] Preferably, the mounting plates are symmetrically distributed on both sides of the operating box, and gears are fixedly connected to both the output end of the motor and the surface of the connecting shaft on the right side. A synchronizing block is fixedly connected to the surface of the working roller, and the synchronizing block is inserted inside the connecting shaft.
[0007] Preferably, the reciprocating assembly includes an auxiliary plate fixedly connected to the output end of the motor, and the auxiliary plate is inclined. The movable plate passes through the interior of the mounting plate, and a vertical rod is fixedly connected to the upper surface of the movable plate. The vertical rods are distributed on both sides of the auxiliary plate, and the surface of the vertical rods is in contact with the surface of the auxiliary plate.
[0008] Preferably, the lifting assembly includes a lower connecting rod fixedly connected to the lower surface of the movable plate, and the working plate is sleeved on the surface of the lower connecting rod. The front of the working plate is an inverted "L" structure, and the end of the lower connecting rod is protruding.
[0009] Preferably, a long plate is fixedly connected to the inner wall of the mounting plate, and a main magnet is fixedly connected to the upper surface of the long plate. A secondary magnet is fixedly connected to the lower surface of the working plate, and the magnetic poles on the lower surface of the secondary magnet are the same as the magnetic poles on the upper surface of the main magnet.
[0010] Preferably, an upper connecting plate is fixedly connected to the upper surface of the end of the right-side movable plate, and an airbag is bonded to the surface of the upper connecting plate, and the other side of the airbag is attached to the outer wall of the mounting plate.
[0011] Preferably, an air inlet pipe is fixedly connected to the upper surface of the airbag, and an air supply pipe is fixedly connected to the side of the airbag. A connecting pipe is fixedly connected to the side of the working plate, and the connecting pipe is connected to the air supply pipe through an external flexible hose. A one-way valve is fixedly connected to the surface of both the air supply pipe and the surface of the air inlet pipe.
[0012] Preferably, the direct release assembly includes an external rod fixedly connected to the outer wall of the mounting plate, and a limiting rod fixedly connected to the inner wall of the external rod, and a slider is slidably provided on the surface of the limiting rod, and a groove is provided on the side of the external rod.
[0013] Preferably, the surface of the slider is rotatably connected to a guide rod, and the slider is initially in contact with the left side of the groove. The end of the working roller is fixedly connected to a force plate, and the force plate is spiral-shaped.
[0014] Preferably, a return spring is fixedly connected to the surface of the slider, and the other side of the return spring is fixedly connected to the inner wall of the external rod.
[0015] Compared with the prior art, the beneficial effects of this invention are as follows: Adopting a novel structural design, after the working rollers are aligned, the motor operates, causing the working rollers to convey material. This allows the high-definition detection component to detect the patterns and shapes on the material surface. Simultaneously, the working plate and nozzle are pushing the material, ensuring no impurities remain on the material surface and improving the accuracy of pattern and shape detection. Upon detecting a defective product, the motor reverses, causing the working rollers to reverse as well. This, in turn, pushes the force plate, causing the force plate to move the working rollers off the connecting shaft, thus ejecting the working rollers. This facilitates quick removal of defective products by the operator, improving work efficiency. The specific details are as follows:
[0016] (1) The automated defect detection device for lace production, when the motor is working, makes the material conveyed from the right side to the left side and detected by the high-definition detection component. When the motor rotates, the movable plate makes reciprocating linear motion inside the mounting plate under the action of the auxiliary plate and the vertical rod. Then the working plate pushes the material, making the material shake, which causes the particulate impurities to fall off, and finally improves the accuracy of detection.
[0017] Furthermore, as the movable plate moves the working plate, the secondary magnet on the lower surface of the working plate will intermittently approach the main magnet on the upper surface of the long plate. As a result, the working plate will reciprocate in a straight line in the vertical direction under the action of mutual repulsive magnetic force, its own gravity, and the lower connecting rod. This increases the pushing amplitude of the working plate, allowing particulate impurities to fall off more effectively.
[0018] (2) When the movable plate of the automated defect detection device for lace production makes reciprocating linear motion, it will drive the upper plate to move synchronously. Then the upper plate will cooperate with the outer mounting plate to intermittently squeeze the air bag. In turn, the air bag will intermittently supply air to the working plate and the nozzle. At this time, the working plate and the nozzle play the role of blowing air to assist cleaning, which optimizes the accuracy of detection. At the same time, the negative pressure adsorption plate set on the upper surface of the control box plays the role of purifying the detection environment, which also improves the accuracy of detection.
[0019] (3) In normal operation, the working roller of the automated defect detection device for lace production rotates counterclockwise. At this time, the guide rod is pushed by the force plate. Under the action of the thrust, the limit rod and the return spring, the guide rod makes reciprocating linear motion in the horizontal direction. After the defective product is detected, the motor reverses and the working roller rotates clockwise. At this time, the guide rod is in contact with the leftmost side of the groove, so the guide rod will not be displaced. At this time, the force plate is subjected to force, which forces the force plate and the working roller to move to the outside of the connecting shaft. Then the working roller moves out of the connecting shaft, which makes it easier for the staff to take away the workpiece directly when they come to deal with the defective product, thus improving the work efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the control box of the present invention;
[0021] Figure 2 This is a schematic diagram of the connection structure between the control box and the mounting plate of the present invention;
[0022] Figure 3 This is a schematic diagram of the connection structure between the external board and the motor of the present invention;
[0023] Figure 4 This is a schematic diagram of the connection structure between the motor and the auxiliary board of the present invention;
[0024] Figure 5 This is a schematic diagram of the connection structure between the connecting shaft and the working roller of the present invention;
[0025] Figure 6 This is a schematic diagram of the connection structure between the movable plate and the working plate of the present invention;
[0026] Figure 7 This is a schematic diagram of the connection structure between the working plate and the auxiliary magnet of the present invention;
[0027] Figure 8 This is a schematic diagram of the connection structure between the working roller and the force plate of the present invention;
[0028] Figure 9 This is a schematic diagram of the external rod in a cross-sectional state according to the present invention;
[0029] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point A in the middle;
[0030] Figure 11 This is a schematic diagram of the working roller in the outward-moving state of the present invention.
[0031] In the diagram: 1. Control box; 2. Mounting plate; 3. Working roller; 4. Motor; 5. External plate; 6. Connecting shaft; 7. Synchronizing block; 8. Auxiliary plate; 9. Movable plate; 10. Vertical rod; 11. Lower connecting rod; 12. Working plate; 13. Long plate; 14. Main magnet; 15. Secondary magnet; 16. Upper connecting plate; 17. Airbag; 18. Air inlet pipe; 19. Connecting pipe; 20. Air supply pipe; 21. External rod; 22. Force plate; 23. Limiting rod; 24. Slider; 25. Return spring; 26. Guide rod; 27. Groove. Detailed Implementation
[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0033] Please see Figures 1-11 The present invention provides the following technical solution: an automated defect detection device for lace production.
[0034] Example 1: By using a movable plate 9 and a working plate 12 that can reciprocate linearly in the horizontal direction, particulate impurities on the surface of materials can be cleaned, improving the accuracy of detection. Figures 1-7 As shown, the system includes an operation box 1, an installation plate 2 bolted to the upper surface of the operation box 1, an outer connecting plate 5 bolted to the outer wall of the installation plate 2, a connecting shaft 6 rotatably mounted inside the outer connecting plate 5, a high-definition detection component mounted on the upper surface of the operation box 1, a working roller 3 rotatably mounted inside the installation plate 2, a negative pressure adsorption plate mounted on the right side of the upper surface of the operation box 1, a motor 4 bolted to the outer wall of the right outer connecting plate 5, a movable plate 9 movably connected to the motor 4 via a reciprocating assembly, an upper connecting plate 16 fixedly connected to the upper surface of the end of the movable plate 9, a working plate 12 movably connected to the movable plate 9 via a lifting assembly, nozzles evenly spaced on the upper surface of the working plate 12, and a connecting pipe 19 fixedly connected to the side of the working plate 12.
[0035] Mounting plates 2 are symmetrically distributed on both sides of the control box 1. Gears are fixedly connected to the output end of the motor 4 and the surface of the right connecting shaft 6. Synchronizing blocks 7 are fixedly connected to the surface of the working roller 3 and are inserted into the inside of the connecting shaft 6. The reciprocating assembly includes an auxiliary plate 8 fixedly connected to the output end of the motor 4 and the auxiliary plate 8 is inclined. A movable plate 9 passes through the inside of the mounting plate 2 and a vertical rod 10 is fixedly connected to the upper surface of the movable plate 9. The vertical rods 10 are distributed on both sides of the auxiliary plate 8 and the surface of the vertical rod 10 is in contact with the surface of the auxiliary plate 8.
[0036] The lifting assembly includes a lower connecting rod 11 fixedly connected to the lower surface of the movable plate 9, and a working plate 12 is sleeved and connected to the surface of the lower connecting rod 11. The front of the working plate 12 is an inverted "L" structure, and the end of the lower connecting rod 11 is protruding. A long plate 13 is fixedly connected to the inner wall of the mounting plate 2, and a main magnet 14 is fixedly connected to the upper surface of the long plate 13. A secondary magnet 15 is fixedly connected to the lower surface of the working plate 12, and the magnetic poles on the lower surface of the secondary magnet 15 are the same as the magnetic poles on the upper surface of the main magnet 14.
[0037] During operation, the material is placed on the working roller 3, and then the working roller 3 is inserted into the connecting shaft 6, so that the synchronizing block 7 is located inside the connecting shaft 6. Then, when the motor 4 is working, the material is conveyed from right to left (e.g., ...). Figure 1 As shown in the figure, the material is detected by the high-definition detection component. When the motor 4 rotates, the movable plate 9, under the action of the auxiliary plate 8 and the vertical rod 10, makes a reciprocating linear motion inside the mounting plate 2. When the movable plate 9 moves, it will drive the working plate 12 to move synchronously. In turn, the working plate 12 will push the material, making the material shake, thereby causing the particulate impurities to fall off, ultimately improving the accuracy of detection.
[0038] During the movement of the working plate 12 driven by the movable plate 9, the auxiliary magnet 15 on the lower surface of the working plate 12 will intermittently approach the main magnet 14 on the upper surface of the long plate 13. When the auxiliary magnet 15 approaches the main magnet 14, the working plate 12 rises on the surface of the lower connecting rod 11 (the lower surface of the lower connecting rod 11 is convex, which limits the displacement distance of the working plate 12). When the auxiliary magnet 15 moves away from the main magnet 14, the magnetic force on the working plate 12 decreases. That is, the magnetic force on the working plate 12 is in a dynamic process. As a result, under the action of mutual repulsive magnetic force, its own weight, and the lower connecting rod 11, the working plate 12 makes a reciprocating linear motion in the vertical direction. As a result, the pushing amplitude of the working plate 12 increases, which can make the particulate impurities fall off better.
[0039] Example 2: Unlike Example 1, the airbag 17 provides air to the work plate 12, thus assisting in cleaning with airflow. Figures 3-6As shown, an upper connecting plate 16 is fixedly connected to the upper surface of the end of the right movable plate 9, and an airbag 17 is bonded to the surface of the upper connecting plate 16. The other side of the airbag 17 is attached to the outer wall of the mounting plate 2. An air inlet pipe 18 is fixedly connected to the upper surface of the airbag 17, and an air supply pipe 20 is fixedly connected to the side of the airbag 17. A connecting pipe 19 is fixedly connected to the side of the working plate 12, and the connecting pipe 19 is connected to the air supply pipe 20 through an external flexible hose. A one-way valve is fixedly connected to the surface of the air supply pipe 20 and the surface of the air inlet pipe 18.
[0040] When the movable plate 9 reciprocates in a linear motion, it will drive the upper connecting plate 16 to move synchronously. In turn, the upper connecting plate 16 will cooperate with the outer mounting plate 2, which will intermittently compress the airbag 17. Figure 3 (When the airbag 17 is compressed, it supplies air to the working plate 12 through the air supply pipe 20 and the connecting pipe 19. When the airbag 17 is not compressed, it draws air through the air inlet pipe 18. As a result, the airbag 17 intermittently supplies air to the working plate 12 and the nozzle. At this time, the working plate 12 and the nozzle play a role in blowing air to assist cleaning, which optimizes the accuracy of the detection (the one-way valve makes the airflow direction from the airbag 17 to the working plate 12, and there will be no backflow). At the same time, the negative pressure adsorption plate set on the upper surface of the control box 1 plays a role in purifying the detection environment, which also improves the accuracy of the detection.
[0041] Example 3: Unlike Example 2, the direct-release assembly allows for the direct removal of the force plate 22 and the work roller 3 after detecting defective products. Figures 8-11 As shown, an external rod 21 is fixedly connected to the outer wall of the mounting plate 2, and a direct release assembly is provided between the external rod 21 and the working roller 3. Adjacent working rollers 3 are connected by a pulley. The direct release assembly includes an external rod 21 fixedly connected to the outer wall of the mounting plate 2, and a limit rod 23 is fixedly connected to the inner wall of the external rod 21. A slider 24 is slidably provided on the surface of the limit rod 23, and a groove 27 is provided on the side of the external rod 21.
[0042] The surface of the slider 24 is rotatably connected to the guide rod 26, and the slider 24 is initially in contact with the left side of the groove 27. The end of the working roller 3 is fixedly connected to the force plate 22, and the force plate 22 is spiral. The surface of the slider 24 is fixedly connected to the return spring 25, and the other side of the return spring 25 is fixedly connected to the inner wall of the external rod 21.
[0043] During normal operation, the working roller 3 rotates counterclockwise. At this time, the guide rod 26 is pushed by the force plate 22 and slides inside the groove 27. That is, under the action of the thrust, the limit rod 23, and the return spring 25, the guide rod 26 performs reciprocating linear motion in the horizontal direction inside the outer rod 21. After detecting a defective product, the motor 4 reverses direction, and the working roller 3 rotates clockwise (e.g., ...). Figure 9 As shown in the figure, the guide rod 26 is in contact with the leftmost side of the groove 27, so the guide rod 26 will not be displaced. The guide rod 26 will push the force plate 22. At this time, the force plate 22 is subjected to force, which forces the force plate 22 and the working roller 3 to move outward towards the connecting shaft 6. Then the working roller 3 and the synchronizing block 7 move out of the connecting shaft 6, which makes it easier for the staff to directly take away the workpiece when they come to handle the defective products, reducing the extraction process and improving work efficiency.
[0044] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An automated defect detection device for lace production, comprising an operation box (1), wherein an installation plate (2) is bolted to the upper surface of the operation box (1), and an outer plate (5) is bolted to the outer wall of the installation plate (2), and a connecting shaft (6) is rotatably provided inside the outer plate (5), and a high-definition detection component is provided on the upper surface of the operation box (1), a working roller (3) is rotatably provided inside the installation plate (2), and a negative pressure adsorption plate is provided on the right side of the upper surface of the operation box (1); Its features are: A motor (4) is bolted to the outer wall of the outer plate (5) on the right side, and the motor (4) is movably connected to the movable plate (9) through the reciprocating assembly, and an upper plate (16) is fixedly connected to the upper surface of the end of the movable plate (9). The movable plate (9) is movably connected to the working plate (12) via a lifting assembly, and the upper surface of the working plate (12) is provided with nozzles at equal intervals, and the side of the working plate (12) is fixedly connected to a connecting pipe (19). An external rod (21) is fixedly connected to the outer wall of the mounting plate (2), and a direct-release assembly is provided between the external rod (21) and the working roller (3), and adjacent working rollers (3) are connected by pulleys; the mounting plates (2) are symmetrically distributed on both sides of the operating box (1), and gears are fixedly connected to the output end of the motor (4) and the surface of the connecting shaft (6) on the right side, and a synchronizing block (7) is fixedly connected to the surface of the working roller (3), and the synchronizing block (7) is inserted into the inside of the connecting shaft (6); the reciprocating assembly includes an auxiliary plate (8) fixedly connected to the output end of the motor (4), and the auxiliary plate (8) is inclined, and the movable plate (9) penetrates the interior of the mounting plate (2), and the upper surface of the movable plate (9) is fixedly connected to There are vertical rods (10), and the vertical rods (10) are distributed on both sides of the auxiliary plate (8). The surface of the vertical rods (10) is in contact with the surface of the auxiliary plate (8). The lifting assembly includes a lower connecting rod (11) fixedly connected to the lower surface of the movable plate (9). The working plate (12) is sleeved on the surface of the lower connecting rod (11). The front of the working plate (12) is an inverted "L" structure, and the end of the lower connecting rod (11) is protruding. A long plate (13) is fixedly connected to the inner wall of the mounting plate (2). A main magnet (14) is fixedly connected to the upper surface of the long plate (13). A secondary magnet (15) is fixedly connected to the lower surface of the working plate (12). The magnetic poles of the lower surface of the secondary magnet (15) are the same as the magnetic poles of the upper surface of the main magnet (14). The direct release assembly includes an external rod (21) fixedly connected to the outer wall of the mounting plate (2), and a limiting rod (23) fixedly connected to the inner wall of the external rod (21), and a slider (24) is slidably provided on the surface of the limiting rod (23), and a groove (27) is provided on the side of the external rod (21). The surface of the slider (24) is rotatably connected to a guide rod (26), and the slider (24) is initially in contact with the left side of the groove (27). The end of the working roller (3) is fixedly connected to a force plate (22), and the force plate (22) is spiral. The surface of the slider (24) is fixedly connected to a return spring (25), and the other side of the return spring (25) is fixedly connected to the inner wall of the external rod (21).
2. The automated defect detection device for lace production according to claim 1, characterized in that: An upper plate (16) is fixedly connected to the upper surface of the end of the right-side movable plate (9), and an airbag (17) is bonded to the surface of the upper plate (16), and the other side of the airbag (17) is attached to the outer wall of the mounting plate (2).
3. The automated defect detection device for lace production according to claim 2, characterized in that: An air inlet pipe (18) is fixedly connected to the upper surface of the airbag (17), and an air supply pipe (20) is fixedly connected to the side of the airbag (17). A connecting pipe (19) is fixedly connected to the side of the working plate (12), and the connecting pipe (19) is connected to the air supply pipe (20) through an external hose. A one-way valve is fixedly connected to the surface of the air supply pipe (20) and the surface of the air inlet pipe (18).