A weld inspection device for a hot-dip galvanizing coil production line

Abstract

This invention provides a weld inspection device for a hot-dip galvanized coil production line, relating to the field of weld inspection equipment. It includes an inspection frame, a guide assembly, a follow-up assembly, and a cleaning assembly. A displacement plate is slidably fitted between the two side plates of the inspection frame. A displacement frame is slidably fitted along the length of the displacement plate. A vertical strip is slidably fitted through the center of the displacement frame. Fixed limiting strips and adjustable limiting strips are respectively fixedly connected to the inner sides of the two side plates of the inspection frame. Through the cooperation of the adjustable limiting strips, fixed limiting strips, and limiting plates, hot-dip galvanized coils of different specifications can be smoothly guided into the inspection area. A first spring provides elastic fixation for the adjustable limiting strips. The limiting blocks on both sides of the displacement plate cooperate with the limiting grooves of the inspection frame to prevent the displacement plate from shifting during sliding. The cooperation of the positioning plate, positioning groove, and positioning pin achieves precise positioning of the displacement frame, ensuring that the weld inspection box is always aligned with the weld trajectory.

Description

Technical Field

[0001] This disclosure relates to the field of weld inspection equipment, and more particularly to a weld inspection device for a hot-dip galvanizing and coiling production line. Background Technology

[0002] Hot-dip galvanized coils are widely used in construction, machinery, chemical and other industrial fields due to their excellent corrosion resistance and structural strength. The quality of their welds directly determines the service life, safety and market competitiveness of the finished product, and is the core link in the quality control of hot-dip galvanized coil production lines. In order to ensure the quality of hot-dip galvanized coil production, it is often necessary to inspect the welds, which requires the use of weld inspection equipment.

[0003] Existing testing methods mostly rely on manual sampling or traditional single-function testing equipment. Manual sampling is affected by subjective factors such as visual fatigue and experience differences, which easily leads to missed detections and misjudgments. Moreover, the testing efficiency is low, and it cannot achieve continuous online testing throughout the entire production line. The test data lacks traceability, making it difficult to support quality control in large-scale production. At the same time, the adaptability of existing equipment is poor. For hot-dip galvanized coils of different specifications and sizes, the equipment structure needs to be frequently adjusted manually, which is cumbersome and time-consuming, and cannot be quickly adapted to the multi-variety, small-batch production mode of the production line. Furthermore, most testing equipment does not integrate testing and cleaning processes. Welding residues and zinc layer impurities on the weld surface can easily interfere with the testing accuracy, requiring additional cleaning equipment, which increases the equipment investment and process complexity of the production line. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a weld inspection device for a hot-dip galvanizing and coiling production line.

[0006] To achieve the above objectives, this disclosure provides a weld inspection device for a hot-dip galvanized coil production line, comprising an inspection frame, a displacement plate slidably fitted between the two side plates of the inspection frame, a displacement frame slidably fitted on the displacement plate along its length, a vertical strip block slidably fitted through the middle of the displacement frame, a fixed limiting strip and an adjustable limiting strip respectively fixedly connected to the inner sides of the two side plates of the inspection frame, and an outwardly inclined limiting plate fixedly connected to the outer ends of both the fixed limiting strip and the adjustable limiting strip, and a weld inspection box fixedly installed at the bottom of the displacement frame; A guide assembly is disposed between a displacement plate and a displacement frame. The guide assembly includes a strip plate that is obliquely fixed between two side plates of the detection frame. A guide groove is formed through the upper side of the strip plate downwards. A sliding groove is formed through the upper side of the displacement plate downwards. A guide post and a slider are fixedly connected between the upper and lower plates of the vertical strip block. The guide post rotates and slides on the inner wall of the guide groove. The slider slides on the inner wall of the sliding groove. A follower assembly is disposed on a displacement plate. The follower assembly includes a follower plate that is slidably fitted on the side of the displacement plate near the fixed limiting strip. A side friction abutment plate is fixedly connected to the bottom of the follower plate. An upper friction abutment plate is slidably fitted in a groove on one side of the follower plate. A right first electric telescopic rod is fixedly installed on the inner wall of the groove on one side of the follower plate. The upper side of the upper friction abutment plate is fixedly connected to one end of the telescopic shaft of the first electric telescopic rod. A cleaning component is provided below the upright block. The cleaning component includes a cleaning hopper fixedly connected to the bottom of the upright block. The inner wall of the cleaning hopper is provided with a flat push plate and two rotating push plates that are rotatably engaged. A collection box is provided on the side plate of the detection frame corresponding to the fixed limit strip. The collection box is located below the end of the strip plate and its bottom wall at the opening is inclined inward.

[0007] Optionally, a multispectral composite imaging unit, a vision processing unit, and a metrology calibration and certification module are fixedly installed inside the weld inspection box; wherein, the multispectral composite imaging unit includes a near-infrared thermal imaging camera, a hyperspectral imager, and a laser, which are fixedly installed inside the weld inspection box.

[0008] Optionally, a first connecting rod is fixedly connected to one side of the adjustable limiting strip, a first spring is fixedly connected between one side of the adjustable limiting strip and one side plate of the detection frame, limiting blocks are fixedly connected to both sides of the displacement plate, limiting grooves are formed on the inner sides of both side plates of the detection frame, and a second spring is fixedly connected between one side of the displacement plate and the cross plate of the detection frame; wherein, the first connecting rod passes through one side plate of the detection frame and slides with it, and the limiting block slides with the inner wall of the limiting groove.

[0009] Optionally, the upper side of the displacement plate has a first through groove and a second through groove, the inner wall of the second through groove is slidably fitted with a lever, a connecting strip is fixedly connected to one side of the follower plate, a slot is opened on one side of the connecting strip, a beveled locking block is fixedly connected to one side of the lever, and a third spring is fixedly connected between one side of the follower plate and the inner wall of the first through groove; wherein, the follower plate is slidably fitted to the inner wall of the first through groove, the lever cooperates with the upper side plate of the displacement frame, the connecting strip passes through the side plate between the first and second through grooves and is located in the second through groove, and the slot cooperates with the beveled locking block.

[0010] Optionally, the inner wall of the first through groove is provided with an installation groove, and a second electric telescopic rod is fixedly installed on the inner wall of the installation groove. One end of the telescopic shaft of the second electric telescopic rod is fixedly connected to an L-shaped block, and one side of the L-shaped block is located behind the follower plate and abuts against it. The second electric telescopic rod and the first electric telescopic rod are signal connected, and the L-shaped block is slidably fitted on the inner wall of the installation groove.

[0011] Optionally, a detection camera is fixedly installed at the bottom of the displacement plate, and the detection camera is signal-connected to the second electric telescopic rod and the first electric telescopic rod.

[0012] Optionally, a positioning plate is provided above the limiting plate on the upper side of the displacement frame, and two second connecting rods are fixedly connected to the bottom of the positioning plate. A fourth spring is fixedly connected between the positioning plate and the limiting plate. The second connecting rods slide with the limiting plate, and transition bevels are provided on both sides of the bottom of the positioning plate.

[0013] Optionally, the bottom of the positioning plate is provided with a positioning groove, the upper side of the displacement frame is provided with a first through groove, the top of the upright block is fixedly connected with a positioning pin, the upright block is a two-segment sliding arrangement and a fifth spring is fixedly connected between them; wherein, the upright block slides against the inner wall of the first through groove, and the top of the positioning pin is arc-shaped and abuts against the inclined side of the transition inclined side and is located in the positioning groove.

[0014] Optionally, a second through groove communicating with the first through groove is provided on one side of the slider, a connecting plate that slides in the second through groove is fixedly connected to one side of the vertical block, a follower groove communicating with the first through groove is provided on the inner wall of the slider, a connecting frame that slides between the inner walls of the two sides of the follower groove, a fixing block that is fixedly connected to one side of the follower plate, and a connecting frame that is provided between the fixing block and the connecting frame; wherein, the connecting plate slides in the inner wall of the connecting frame, one end of the connecting frame rotates in conjunction with the fixing block, and the other end rotates in conjunction with the side of the connecting frame.

[0015] Optionally, connecting shafts are fixedly connected to the inner walls of both sides of the front end of the cleaning bucket, connecting sleeves are fixedly connected to the bottom of the front side of the two rotating push plates, torsion springs are fixedly connected to the rotating parts of the connecting shafts and connecting sleeves, a connecting groove is opened downward on the upper side of the flat push plate, and connecting blocks that cooperate with the two rotating push plates are slidably fitted on both sides of the connecting groove; wherein, the connecting shaft is rotatably fitted on the inner wall of the connecting sleeve, a connecting post is fixedly connected to the bottom of the connecting block, a circular groove that rotatably cooperates with the connecting block is opened on the upper side of the rotating push plate near the flat push plate, and the two rotating push plates cooperate with the two side plates at the opening of the collection box.

[0016] The technical solution provided in this disclosure may include the following beneficial effects: 1. This invention, through the cooperation of adjustable limiting strips, fixed limiting strips, and limiting plates, can guide hot-dip galvanized coils of different specifications to smoothly enter the inspection area. The first spring achieves elastic fixation of the adjustable limiting strips, eliminating the need for frequent disassembly and adjustment. At the same time, the limiting plate drives the positioning plate to move synchronously through the second connecting rod. The positioning plate abuts against the displacement frame through the fourth spring. The positioning pin at the top of the upright block is embedded in the positioning groove, allowing the displacement frame to be adjusted synchronously with the limiting plate to the start end of the weld, accurately adapting to the inspection requirements of hot-dip galvanized coils of different sizes. 2. This invention uses the limiting blocks on both sides of the displacement plate to cooperate with the limiting grooves of the detection frame to prevent the displacement plate from shifting when sliding; the cooperation of the positioning plate, positioning groove and positioning pin realizes the precise positioning of the displacement frame, ensuring that the weld inspection box is always aligned with the weld trajectory; after the inspection is completed, the automatic reset of each component of the equipment is realized through the linkage of the toggle block, the third spring and other components, and the positioning pin is re-embedded into the positioning groove, ensuring the positioning accuracy of the next inspection and effectively avoiding misjudgment and missed inspection caused by inspection offset; 3. This invention enables the cleaning components and weld inspection box to work synchronously. The cleaning bucket moves with the displacement frame to scrape off impurities on the weld surface in real time, avoiding interference from impurities with the inspection accuracy. The coordinated design of the rotating push plate, the flat push plate and the collection box realizes the automatic collection of residue and the automatic reset of the cleaning components. No additional cleaning equipment is required, which simplifies the production line process, reduces equipment investment, and avoids the efficiency loss caused by the disconnect between the cleaning and inspection processes, thereby improving the efficiency of continuous inspection operations. 4. This invention integrates a multispectral composite imaging unit, a vision processing unit, and a metrological calibration and certification module into a weld inspection box. It combines three detection methods: near-infrared thermal imaging, hyperspectral imaging, and laser excitation, and can simultaneously identify multiple defects on the weld surface and inside, breaking through the limitations of traditional single detection. The metrological calibration module enables online real-time calibration of the inspection equipment, ensuring the accuracy and traceability of the inspection data. The generated national standard format inspection report contains key information such as defect type, size, location, and confidence level, directly providing reliable data support for production line quality certification and enhancing the authority of quality control. 5. This invention achieves automatic weld seam recognition and detection triggering through a detection camera, and achieves automatic fixing and detachment of the follower plate through components such as the second electric telescopic rod and the first electric telescopic rod. The automatic reset of each component is achieved through a spring assembly. The entire detection, cleaning and reset process does not require manual intervention in the core operation, effectively reducing the intensity of manual labor and labor costs.

[0017] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of a weld inspection device for a hot-dip galvanizing and coiling production line according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the side cross-section of a detection frame according to an embodiment of the present disclosure; Figure 3 This is proposed in one embodiment of the present disclosure. Figure 2 -Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the connection between the limiting plate and the positioning plate according to an embodiment of the present disclosure; Figure 5 This is a schematic diagram of the structure connecting the displacement frame and the cleaning component according to an embodiment of the present disclosure; Figure 6 This is a schematic diagram of the connection between the displacement frame and the cleaning component according to an embodiment of the present disclosure from another perspective; Figure 7 This is proposed in one embodiment of the present disclosure. Figure 6 Enlarged structural diagram at point B; Figure 8 This is proposed in one embodiment of the present disclosure. Figure 6 - Enlarged structural diagram at point C; Figure 9 This is a schematic diagram of the structure in which a displacement plate is connected to a displacement frame via a guide assembly according to an embodiment of this disclosure; Figure 10 This is a schematic diagram of the structure of a displacement plate according to an embodiment of this disclosure; Figure 11 This is proposed in one embodiment of the present disclosure. Figure 10 Enlarged structural diagram at point -D; Figure 12 This is proposed in one embodiment of the present disclosure. Figure 10 Enlarged structural diagram at point -E; As shown in the figure: 1. Inspection frame; 2. Displacement plate; 3. Displacement frame; 4. Vertical strip block; 6. Follow-up assembly; 7. Cleaning assembly; 8. Collection box; 9. Fixed limit strip; 10. Adjustable limit strip; 11. Limit plate; 12. Weld inspection box; 13. First connecting rod; 14. First spring; 15. Limit block; 16. Limit groove; 17. Second spring; 18. Inspection camera; 19. Positioning plate; 20. Second connecting rod; 21. Fourth spring; 22. Positioning groove; 23. Transition bevel; 24. First through groove; 25. Second through groove; 26. Connecting plate; 27. Fixed block; 28. Follow-up groove; 29. ​​Connecting frame; 30. Connecting frame; 31. Positioning pin; 32. Fifth spring; 5. Guide assembly; 501. Strip plate; 502. Guide groove; 503. Slide groove; 504. Guide post; 505. Slider; 6. Follower assembly; 601. Follower plate; 602. Side friction abutment plate; 603. Upper friction abutment plate; 604. First electric telescopic rod; 605. First through slot; 606. Second through slot; 607. Pulley; 608. Connecting strip; 609. Slot; 610. Beveled slot; 611. Third spring; 612. Mounting slot; 613. Second electric telescopic rod; 614. L-shaped block; 7. Cleaning components; 701. Cleaning bucket; 702. Flat push plate; 703. Rotating push plate; 704. Connecting shaft; 705. Connecting sleeve; 706. Torsion spring; 707. Connecting groove; 708. Connecting block; 709. Connecting column; 710. Circular groove. Detailed Implementation

[0019] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0020] like Figures 1-12As shown in the figure, this disclosure proposes a weld inspection device for a hot-dip galvanized coil production line, including an inspection frame 1, a guide assembly 5, a follow-up assembly 6, and a cleaning assembly 7. A displacement plate 2 is slidably fitted between the two side plates of the inspection frame 1. A displacement frame 3 is slidably fitted along the length of the displacement plate 2. A vertical strip block 4 is slidably fitted through the middle of the displacement frame 3. Fixed limiting strips 9 and adjustable limiting strips 10 are respectively fixedly connected to the inner sides of the two side plates of the inspection frame 1. Limiting plates 11 inclined outwards are fixedly connected to the outer ends of both the fixed limiting strips 9 and the adjustable limiting strips 10. A weld inspection box 12 is fixedly installed at the bottom of the displacement frame 3. A multispectral composite imaging unit, a visual processing unit, and a metrological calibration and certification module are fixedly installed inside the weld inspection box 12. The multispectral composite imaging unit includes a near-infrared thermal imaging camera fixedly installed inside the weld inspection box 12. The hyperspectral imager and laser are described. A first connecting rod 13 is fixedly connected to one side of the adjustable limiting strip 10. A first spring 14 is fixedly connected between one side of the adjustable limiting strip 10 and one side plate of the detection frame 1. Limiting blocks 15 are fixedly connected to both sides of the displacement plate 2. Limiting grooves 16 are formed on the inner sides of both side plates of the detection frame 1. A second spring 17 is fixedly connected between one side of the displacement plate 2 and the horizontal plate of the detection frame 1. The first connecting rod 13 passes through one side plate of the detection frame 1 and slides with it. The limiting block 15 slides within the inner wall of the limiting groove 16.

[0021] In some embodiments, the guide assembly 5 is disposed between the displacement plate 2 and the displacement frame 3. The guide assembly 5 includes a strip plate 501 obliquely fixedly connected between the two side plates of the detection frame 1. A guide groove 502 is formed downward through the upper side of the strip plate 501, and a sliding groove 503 is formed downward through the upper side of the displacement plate 2. A guide post 504 and a slider 505 are fixedly connected between the upper and lower plates of the vertical block 4. The guide post 504 rotates and slides against the inner wall of the guide groove 502. The slider 505 slides on the inner wall of the groove 503. A positioning plate 19 is provided above the limiting plate 11 on the upper side of the displacement frame 3. Two second connecting rods 20 are fixedly connected to the bottom of the positioning plate 19. A fourth spring 21 is fixedly connected between the positioning plate 19 and the limiting plate 11. The second connecting rods 20 slide on the limiting plate 11. Both sides of the bottom of the positioning plate 19 are provided with transition bevels 23. The bottom of the positioning plate 19 is provided with a positioning groove 22. The upper side of the displacement frame 3 is opened downwards. The system includes a first through groove 24, a positioning pin 31 fixedly connected to the top of the upright block 4, and the upright block 4 being a two-section sliding arrangement with a fifth spring 32 fixedly connected between them. The upright block 4 slides within the inner wall of the first through groove 24. The top of the positioning pin 31 is arc-shaped and abuts against the inclined edge of the transition inclined edge 23 within the positioning groove 22. A second through groove 25 communicating with the first through groove 24 is provided on one side of the slider 505. A fifth spring 32 is fixedly connected to one side of the upright block 4 and slides within the second through groove 24. The connecting plate 26 is inserted through the groove 25. The inner wall of the sliding groove 503 is provided with a follower groove 28 that communicates with the first through groove 605. A connecting frame 29 is slidably fitted between the inner walls of the two sides of the follower groove 28. A fixing block 27 is fixedly connected to one side of the follower plate 601. A connecting bracket 30 is provided between the fixing block 27 and the connecting frame 29. The connecting plate 26 is slidably fitted on the inner wall of the connecting frame 29. One end of the connecting bracket 30 is rotatably fitted with the fixing block 27, and the other end is rotatably fitted with the side of the connecting frame 29.

[0022] Understandably, the staff adjusts the position of the adjustable limit strip 10 according to the specifications of the hot-dip galvanized coil to be inspected. The adjustable limit strip 10 and the limit plate 11 with the front end of the fixed limit strip 9 tilted outward can guide the hot-dip galvanized coil smoothly into the space between the two side plates of the inspection frame 1. The first spring 14 elastically fixes the adjustable limit strip 10 to ensure that it can adapt to hot-dip galvanized coils of different widths. At the same time, the limit plate 11 drives the positioning plate 19 above it to move synchronously through the second connecting rod 20. The positioning plate 19 is pressed against the upper part of the displacement frame 3 by the elastic force of the fourth spring 21. The positioning pin 31 at the top of the upright block 4 is embedded in the positioning groove 22 below the positioning plate 19, so that when the limit plate 11 is adjusted with the size of the hot-dip galvanized coil, the displacement frame 3 is adjusted synchronously through the positioning plate 19 and is accurately positioned at the beginning end of the weld of the hot-dip galvanized coil.

[0023] In some embodiments, the follower assembly 6 is disposed on the displacement plate 2. The follower assembly 6 includes a follower plate 601 slidably fitted below the side of the displacement plate 2 near the fixed limiting strip 9. A side friction abutment plate 602 is fixedly connected to the bottom of the follower plate 601. An upper friction abutment plate 603 is slidably fitted in a groove on one side of the follower plate 601. A right-side first electric telescopic rod 604 is fixedly installed on the inner wall of the groove on one side of the follower plate 601. The upper friction abutment plate 603... The displacement plate 2 is fixedly connected to one end of the telescopic shaft of the first electric telescopic rod 604. A first through groove 605 and a second through groove 606 are formed downwards on the upper side of the displacement plate 2. A lever 607 is slidably fitted onto the inner wall of the second through groove 606. A connecting strip 608 is fixedly connected to one side of the follower plate 601. A slot 609 is formed on one side of the connecting strip 608. A beveled locking block 610 is fixedly connected to one side of the lever 607. The follower plate 601 is fixedly connected to the inner wall of the first through groove 605. A third spring 611 is connected; wherein, the follower plate 601 slides against the inner wall of the first through groove 605, the lever 607 cooperates with the upper side plate of the displacement frame 3, the connecting strip 608 passes through the side plate between the first through groove 605 and the second through groove 606 and is located in the second through groove 606, the slot 609 cooperates with the inclined side locking block 610, the inner wall of the first through groove 605 is provided with an installation groove 612, and the inner wall of the installation groove 612 is fixedly installed with a second electric telescopic rod 613. One end of the telescopic shaft of the second electric telescopic rod 613 is fixedly connected to an L-shaped block 614. One side of the L-shaped block 614 is located behind and abuts against the follower plate 601. The second electric telescopic rod 613 and the first electric telescopic rod 604 are signal connected. The L-shaped block 614 is slidably fitted on the inner wall of the mounting groove 612. A detection camera 18 is fixedly installed at the bottom of the displacement plate 2. The detection camera 18 is signal connected to the second electric telescopic rod 613 and the first electric telescopic rod 604.

[0024] It should be noted that when the hot-dip galvanized coil is conveyed along the production line to the inspection frame 1, the inspection camera 18 at the bottom of the displacement plate 2 collects real-time images of the hot-dip galvanized coil surface. When a weld is detected, a signal is immediately sent to control the hot-dip galvanized coil to briefly stop conveying. At the same time, the signal is transmitted to the second electric telescopic rod 613 and the first electric telescopic rod 604, triggering their synchronous start: the telescopic shaft of the first electric telescopic rod 604 drives the upper friction abutment plate 603 to move downward, tightly abutting against the upper side of the hot-dip galvanized coil. The side friction contact plate 602 at the bottom of the moving plate 601 simultaneously abuts against the hot-dip galvanized coil side, achieving a firm fixation between the moving plate 601 and the hot-dip galvanized coil. When the moving plate 601 moves, it engages with the inclined block 610 of the lever block 607 through the slot 609 on the connecting strip 608. At this time, the third spring 611 is compressed, and the second electric telescopic rod 613 drives the moving plate 601 to move and then reset through the L-shaped block 614. When the moving plate 601 moves, it drives the connecting frame 29 to move within the moving groove 28 through the connecting frame 30. As the wall slides downwards, the connecting frame 29, through the connecting plate 26, drives the vertical strip 4 to move downwards within the first through groove 24, causing the positioning pin 31 to disengage from the positioning groove 22. This releases the displacement frame 3 from the positioning plate 19, preparing for subsequent follow-up testing. When the hot-dip galvanized coil is conveyed forward again, the follow-up plate 601 moves synchronously with the hot-dip galvanized coil, causing the displacement plate 2 to slide along the length of the testing frame 1. During the sliding of the displacement plate 2, the limiting block 15 slides synchronously along the limiting groove 16, limiting the displacement plate 2 and preventing deviation. As the displacement plate 2 slides, the second spring 17 is stretched to generate an elastic restoring force. At the same time, the sliding of the displacement plate 2 drives the guide assembly 5 to work. The guide column 504 between the upper and lower plates of the vertical block 4 slides along the guide groove 502 of the strip plate 501 and rotates synchronously. The slider 505 slides along the slide groove 503 of the displacement plate 2. The two work together to guide the displacement frame 3 to slide along the length direction of the displacement plate 2, so that the weld detection box 12 at the bottom of the displacement frame 3 is accurately aligned with the weld, realizing the follow-up tracking detection of the weld and ensuring that the detection box always fits the weld trajectory.

[0025] In some embodiments, a cleaning component 7 is disposed below the upright block 4. The cleaning component 7 includes a cleaning bucket 701 fixedly connected to the bottom of the upright block 4. The inner wall of the cleaning bucket 701 is provided with a flat push plate 702 and two rotating push plates 703 that are rotatably engaged. A collection box 8 is provided on one side plate of the detection frame 1 corresponding to the fixed limiting strip 9. The collection box 8 is located below the end of the strip plate 501 and its bottom wall at the opening is inclined inward. Connecting shafts 704 are fixedly connected to the inner walls on both sides of the front end of the cleaning bucket 701. Connecting sleeves 70 are fixedly connected to the bottom of the front side of the two rotating push plates 703. 5. A torsion spring 706 is fixedly connected to the rotating part of the connecting shaft 704 and the connecting sleeve 705. A connecting groove 707 is opened downward on the upper side of the flat push plate 702. Connecting blocks 708 that cooperate with the two rotating push plates 703 are slidably fitted on both sides of the connecting groove 707. The connecting shaft 704 is rotatably fitted on the inner wall of the connecting sleeve 705. A connecting post 709 is fixedly connected to the bottom of the connecting block 708. A circular groove 710 that rotatably cooperates with the connecting block 708 is opened on the upper side of the rotating push plate 703 near the flat push plate 702. The two rotating push plates 703 cooperate with the two side plates at the opening of the collection box 8.

[0026] It should be noted that, during the inspection operation, the cleaning component 7 simultaneously performs cleaning work: the cleaning bucket 701 moves synchronously with the upright block 4 and the displacement frame 3, scraping off welding residue and zinc layer impurities from the weld surface, with the residue temporarily stored inside the cleaning bucket 701; when the cleaning bucket 701 moves to the opening of the collection box 8, the outer side of the rotating push plate 703 abuts against the side plate of the collection box 8, and under the force, it rotates around the connecting shaft 704 through the connecting sleeve 705, causing the torsion spring 706 to undergo elastic deformation; when the rotating push plate 703 rotates, it drives the connecting block 708 to slide along the connecting groove 707 towards the collection box 8 through the circular groove 710, thereby driving the flat push plate 702 to move and push the residue into the collection box 8, with the inclined bottom wall of the collection box 8 facilitating the collection of the residue; when the cleaning bucket 701 returns to its original position with the displacement frame 3 and leaves the opening of the collection box 8, the torsion spring 706 elastically returns to its original position, driving the rotating push plate 703 and the flat push plate 702 to return to their initial positions, preparing for the next cleaning.

[0027] Working principle: When using the device, according to the specifications and dimensions of the hot-dip galvanized coil to be inspected, the adjustable limiting strip 10 and the limiting plate 11 with the front end of the fixed limiting strip 9 tilted outwards can guide the hot-dip galvanized coil smoothly into the space between the two side plates of the inspection frame 1. The first spring 14 elastically fixes the adjustable limiting strip 10. At the same time, the limiting plate 11 drives the positioning plate 19 above it to move and be positioned accordingly through the second connecting rod 20. The positioning plate 19 abuts against the upper part of the displacement frame 3 by the elastic force of the fourth spring 21. At this time, the positioning pin 31 at the top of the vertical strip 4 is located in the positioning groove 22 below the positioning plate 19, so that when the limiting plate 11 is adjusted with different sizes of hot-dip galvanized coils, the displacement frame 3 is adjusted synchronously with the positioning plate 19 to be located at the starting end of the hot-dip galvanized coil weld. At the same time, the limiting blocks 15 on both sides of the displacement plate 2 slide and cooperate in the limiting groove 16 of the side plate of the inspection frame 1. The second spring 17 is in a natural extension and retraction state, preparing for the subsequent sliding and resetting of the displacement plate 2. When the hot-dip galvanized coil is conveyed along the production line to the inspection frame 1, the inspection camera 18, fixedly installed at the bottom of the displacement plate 2, collects real-time surface images of the hot-dip galvanized coil. When the inspection camera 18 detects a weld on the hot-dip galvanized coil, it immediately sends a signal to control the hot-dip galvanized coil to briefly stop forward conveying. At the same time, this signal is synchronously transmitted to the second electric telescopic rod 613 and the first electric telescopic rod 604, triggering their synchronous start. The telescopic shaft of the first electric telescopic rod 604 drives the upper friction abutment plate 603 to move downward, so that the upper friction abutment plate 603 tightly abuts against the upper side of the hot-dip galvanized coil. The side friction abutment plate 602 at the bottom of the follower plate 601 synchronously abuts against the side of the hot-dip galvanized coil, realizing... The follower plate 601 is firmly fixed to the hot-dip galvanized coil; at the same time, when the follower plate 601 is displaced, it engages with the inclined block 610 of the lever block 607 through the slot 609 on the connecting strip 608. At this time, the third spring 611 is compressed, and the second electric telescopic rod 613 drives the follower plate 601 to move through the L-shaped block 614 and then resets. When the follower plate 601 is displaced, it drives the connecting frame 29 to slide down the inner wall of the follower groove 28 through the connecting frame 30. The connecting frame 29 drives the vertical strip block 4 to move down in the first through groove 24 through the connecting plate 26, so that the positioning pin 31 disengages from the positioning groove 22 below the positioning plate 19, so that the displacement frame 3 and the positioning plate 19 on the limiting plate 11 are released from the limit. After a brief pause, the hot-dip galvanized coil is conveyed forward again. Since the follower plate 601 is fixed to the hot-dip galvanized coil, the follower plate 601 moves forward synchronously with the hot-dip galvanized coil, causing the displacement plate 2 to slide along the length of the detection frame 1. During the sliding of the displacement plate 2, the limiting block 15 slides synchronously along the limiting groove 16 to limit the sliding direction of the displacement plate 2 and prevent the displacement plate 2 from deviating. The second spring 17 is stretched and generates an elastic restoring force. At the same time, the sliding of the displacement plate 2 causes the guide assembly 5 to start working. The guide column 504 between the upper and lower plates of the vertical strip block 4 slides along the guide groove 502 of the strip plate 501 and rotates synchronously. The slider 505 slides along the sliding groove 503 of the displacement plate 2. The two work together to guide the displacement frame 3 to slide along the length of the displacement plate 2, so that the weld detection box 12 fixedly installed at the bottom of the displacement frame 3 is accurately aligned with the weld of the hot-dip galvanized coil, realizing the follow-up tracking detection of the weld and ensuring that the weld detection box 12 always fits the weld trajectory. When the weld inspection box 12 begins its inspection operation, its internal multispectral composite imaging unit, vision processing unit, and metrology calibration and certification module work together. The near-infrared thermal imaging camera in the multispectral composite imaging unit acquires images of the heat radiation distribution of the weld area during the natural cooling process in real time, accurately sensing temperature field anomalies caused by unevenness in the weld heat-affected zone or internal defects. The hyperspectral imager covers the visible to near-infrared bands, acquiring spectral information of the weld and heat-affected zone. By analyzing the reflectance at different wavelengths, it identifies differences in oxidation color, coating composition segregation, and subtle chemical changes on the weld surface. The laser excites specific suspicious points on the weld, collecting the generated fluorescence or Raman signals for precise judgment. The system identifies the types of inclusions at suspicious points; the vision processing unit receives all data transmitted by the multispectral composite imaging unit, uses a pre-trained deep learning model to fuse and analyze these multi-dimensional features, and simultaneously calls upon the built-in standardized detection model library for different steel grades and new materials to quickly adapt to the hot-dip galvanized coil material being inspected, completing the preliminary judgment of defects; the metrology calibration and certification module uses an integrated standard reference whiteboard and blackbody radiation source to perform online real-time calibration of the spectrometer and thermal imager, ensuring the traceability and accuracy of measurement data, and finally generating a test report in accordance with national standards, including key information such as defect type, size, location, and confidence level, providing reliable data support for production line quality certification; While the weld inspection box 12 is performing inspection operations, the cleaning component 7 at the bottom of the upright block 4 simultaneously performs weld cleaning operations. The cleaning bucket 701 moves synchronously with the upright block 4 and the displacement frame 3, scraping off contaminants such as welding residue and zinc layer impurities from the weld surface. The scraped residue is temporarily stored in the cleaning bucket 701. When the cleaning bucket 701 moves with the displacement frame 3 to the opening of the collection box 8, the connecting shaft 704 on the inner walls of the front two sides of the cleaning bucket 701 engages with the connecting sleeve 705. The outer sides of the two rotating push plates 703 abut against the two side plates at the opening of the collection box 8. Under the force of the side plates of the collection box 8, the rotating push plates 703 rotate around the connecting shaft 704 through the connecting sleeve 705. The torsion spring 706 at the point where the connecting shaft 704 and the connecting sleeve 705 rotate undergoes elastic deformation. The rotating push plates 703 rotate through the connecting shaft 704 and the connecting sleeve 705. During the process, the circular groove 710 on the side near the flat push plate 702 drives the connecting block 708 to slide along the connecting groove 707 towards the collection box 8. The connecting column 709 at the bottom of the connecting block 708 slides synchronously, thereby driving the flat push plate 702 to move along the inner wall of the cleaning hopper 701 towards the collection box 8, smoothly pushing the residue scraped in the cleaning hopper 701 into the collection box 8. The inwardly inclined bottom wall at the opening of the collection box 8 facilitates the rapid sliding of residue to the bottom of the collection box 8, completing the centralized collection of waste. When the cleaning hopper 701 returns to its original position with the displacement frame 3 and leaves the opening of the collection box 8, the torsion spring 706 elastically returns to its original position, driving the rotating push plate 703 to rotate in the opposite direction around the connecting shaft 704. The rotating push plate 703 drives the flat push plate 702 to return to its initial position through the connecting block 708, preparing for the next cleaning and collection operation. After the weld inspection is completed, the displacement frame 3 moves to the end of the displacement plate 2 and abuts against one side of the lever 607, pushing it to disengage the inclined side locking block 610 of the lever 607 from the slot 609. The follower plate 601 is reset by the force of the third spring 611. The reset follower plate 601 drives the vertical strip 4 to move upward through the connecting frame 30 and the connecting frame 29, so that the positioning pin 31 at the top of the vertical strip 4 is in a protruding state. The reset follower plate 601 drives the side friction abutment plate 602 away from the side of the hot-dip galvanized coil. The telescopic shaft of the first electric telescopic rod 604 drives the upper friction abutment plate 603 to move upward away from the upper side of the hot-dip galvanized coil. On the side, the follower plate 601 is separated from the hot-dip galvanized coil. At the same time, the displacement plate 2 slides to the initial position along the detection frame 1 under the elastic restoring force of the second spring 17. The limit block 15 is simultaneously reset along the limit groove 16. The displacement frame 3 is reset synchronously with the displacement plate 2 through the strip plate 501. The protruding displacement plate 2 abuts against the transition bevel 23 at the bottom of the positioning plate 19 and is located in the positioning groove 22, completing the reset of the positioning groove 3. The entire equipment returns to the standby state, waiting for the next batch of hot-dip galvanized coils to be transported to the detection area. The above complete detection, cleaning and collection process is repeated to realize the continuous online detection operation of the weld seam of the hot-dip galvanized coil production line.

[0028] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0029] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0030] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A weld inspection device for a hot-dip galvanizing coil production line, characterized in that, include: The test frame (1) has a displacement plate (2) that slides between the two side plates of the test frame (1). A displacement frame (3) slides along the length of the displacement plate (2). A vertical strip block (4) slides through the middle of the displacement frame (3). A fixed limiting strip (9) and an adjustable limiting strip (10) are fixedly connected to the inner sides of the two side plates of the test frame (1) respectively. A limiting plate (11) that is inclined outward is fixedly connected to the outer ends of the fixed limiting strip (9) and the adjustable limiting strip (10). A weld inspection box (12) is fixedly installed at the bottom of the displacement frame (3). The guide assembly (5) is disposed between the displacement plate (2) and the displacement frame (3). The guide assembly (5) includes a strip plate (501) that is obliquely fixed between the two side plates of the detection frame (1). A guide groove (502) is provided through the upper side of the strip plate (501) downward. A sliding groove (503) is provided through the upper side of the displacement plate (2) downward. A guide column (504) and a slider (505) are fixedly connected between the upper and lower plates of the vertical block (4). The guide column (504) rotates and slides on the inner wall of the guide groove (502). The slider (505) slides on the inner wall of the sliding groove (503). Follower assembly (6), the follower assembly (6) is disposed on displacement plate (2), the follower assembly (6) includes a follower plate (601) which is slidably fitted on the side of displacement plate (2) near the fixed limit strip (9), a side friction abutment plate (602) is fixedly connected to the bottom of the follower plate (601), an upper friction abutment plate (603) is slidably fitted in the groove on one side of the follower plate (601), a first electric telescopic rod (604) is fixedly installed on the inner wall of the groove on one side of the follower plate (601), and the upper side of the upper friction abutment plate (603) is fixedly connected to one end of the telescopic shaft of the first electric telescopic rod (604); The cleaning component (7) is located below the vertical strip block (4). The cleaning component (7) includes a cleaning bucket (701) fixedly connected to the bottom of the vertical strip block (4). The inner wall of the cleaning bucket (701) is provided with a flat push plate (702) and two rotating push plates (703) that are rotatably engaged. A collection box (8) is provided on the side plate of the detection frame (1) corresponding to the fixed limit strip (9). The collection box (8) is located below the end of the strip plate (501) and its bottom wall at the opening is inclined inward.

2. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 1, characterized in that, The weld inspection box (12) is internally equipped with a multispectral composite imaging unit, a vision processing unit, and a metrology calibration and certification module. The multispectral composite imaging unit includes a near-infrared thermal imaging camera, a hyperspectral imager, and a laser, which are fixedly installed inside the weld inspection box (12).

3. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 2, characterized in that, A first connecting rod (13) is fixedly connected to one side of the adjustable limiting strip (10), and a first spring (14) is fixedly connected between one side of the adjustable limiting strip (10) and one side plate of the detection frame (1). Limiting blocks (15) are fixedly connected to both sides of the displacement plate (2). Limiting grooves (16) are opened on the inner side of both side plates of the detection frame (1). A second spring (17) is fixedly connected between one side of the displacement plate (2) and the horizontal plate of the detection frame (1). The first connecting rod (13) passes through one side plate of the detection frame (1) and slides with it, and the limiting block (15) slides with the inner wall of the limiting groove (16).

4. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 3, characterized in that, The upper side of the displacement plate (2) is provided with a first through groove (605) and a second through groove (606). The inner wall of the second through groove (606) is slidably fitted with a lever (607). A connecting strip (608) is fixedly connected to one side of the follower plate (601). A slot (609) is provided on one side of the connecting strip (608). A beveled lever (610) is fixedly connected to one side of the lever (607). A third spring (611) is fixedly connected between one side of the follower plate (601) and the inner wall of the first through groove (605). The follower plate (601) is slidably fitted on the inner wall of the first through groove (605), the pusher block (607) is fitted with the upper side plate of the displacement frame (3), the connecting strip (608) passes through the side plate between the first through groove (605) and the second through groove (606) and is located in the second through groove (606), and the slot (609) is fitted with the inclined side block (610).

5. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 4, characterized in that, The inner wall of the first through groove (605) is provided with an installation groove (612), and a second electric telescopic rod (613) is fixedly installed on the inner wall of the installation groove (612). One end of the telescopic shaft of the second electric telescopic rod (613) is fixedly connected to an L-shaped block (614), and one side of the L-shaped block (614) is located behind the follower plate (601) and abuts against it. The second electric telescopic rod (613) and the first electric telescopic rod (604) are signal connected, and the L-shaped block (614) is slidably fitted on the inner wall of the mounting groove (612).

6. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 5, characterized in that, A detection camera (18) is fixedly installed at the bottom of the displacement plate (2), and the detection camera (18) is signal connected to the second electric telescopic rod (613) and the first electric telescopic rod (604).

7. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 6, characterized in that, A positioning plate (19) is provided above the limiting plate (11) on the upper side of the displacement frame (3). Two second connecting rods (20) are fixedly connected to the bottom of the positioning plate (19). A fourth spring (21) is fixedly connected between the positioning plate (19) and the limiting plate (11). The second connecting rod (20) is slidably engaged with the limiting plate (11), and the bottom sides of the positioning plate (19) are provided with transition bevels (23).

8. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 7, characterized in that, The bottom of the positioning plate (19) is provided with a positioning groove (22), the upper side of the displacement frame (3) is provided with a first through groove (24) and the top of the vertical strip (4) is fixedly connected with a positioning pin (31). The vertical strip (4) is a two-segment sliding arrangement and a fifth spring (32) is fixedly connected between them. The vertical strip (4) slides into the inner wall of the first through groove (24), and the top of the positioning pin (31) is set in an arc and abuts against the inclined side of the transition inclined side (23) in the positioning groove (22).

9. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 8, characterized in that, The slider (505) has a second through groove (25) connected to the first through groove (24) on one side. The vertical strip (4) has a connecting plate (26) that slides in the second through groove (25) on one side. The inner wall of the slide groove (503) has a follower groove (28) that communicates with the first through groove (605). The inner walls of the two sides of the follower groove (28) are slidably connected to a connecting frame (29). The follower plate (601) has a fixed block (27) fixedly connected to one side. A connecting frame (30) is provided between the fixed block (27) and the connecting frame (29). The connecting plate (26) is slidably fitted on the inner wall of the connecting frame (29), one end of the connecting bracket (30) is rotatably fitted with the fixing block (27), and the other end is rotatably fitted with the side of the connecting frame (29).

10. The weld inspection equipment for a hot-dip galvanizing and coiling production line according to claim 9, characterized in that, The inner walls of both sides of the front end of the cleaning bucket (701) are fixedly connected with connecting shafts (704), and the bottom of the front side of the two rotating push plates (703) are fixedly connected with connecting sleeves (705). The rotating parts of the connecting shafts (704) and connecting sleeves (705) are fixedly connected with torsion springs (706). The upper side of the flat push plate (702) is provided with a connecting groove (707) facing downward. The two sides of the connecting groove (707) are respectively slidably fitted with connecting blocks (708) that cooperate with the two rotating push plates (703). The connecting shaft (704) is rotatably fitted on the inner wall of the connecting sleeve (705), the bottom of the connecting block (708) is fixedly connected to the connecting column (709), the upper side of the rotating push plate (703) near the flat push plate (702) is provided with a circular groove (710) that rotatably fits the connecting block (708), and the two rotating push plates (703) respectively fit with the two side plates at the opening of the collection box (8).

Images