On-line quality detection device for magnesium light material rolling

Abstract

The utility model discloses a be used for magnesium light material rolling's on -line quality detection device relates to the on -line detection technical field of metal material rolling processing. This be used for magnesium light material rolling's on -line quality detection device, including portal frame stand, I -beam crossbeam, bottom crossbeam, the portal frame stand bottom is equipped with portal frame flange plate, is equipped with control box, audible -visual alarm device and photoelectricity deviation rectification sensor on the portal frame stand, the bottom crossbeam and I -beam crossbeam are installed two groups of surface detection unit by bar coaxial light source, industrial camera, industrial lens etc.

Description

Technical Field

[0001] This utility model relates to the field of online inspection technology for metal material rolling, and particularly to an online quality inspection device for rolling magnesium lightweight materials. Background Technology

[0002] With the increasing demand for lightweight and high-strength materials in the automotive, 3C product miniaturization, and aerospace fields, magnesium and magnesium alloy sheets have become one of the core choices to replace traditional metal materials due to their advantages such as low density, high specific strength, and good shock absorption. Among them, 3mm thick pure magnesium rolled sheets are widely used in key components such as automotive dashboard frames, laptop shells, and drone bodies. These components have strict requirements for surface quality. Defects such as scratches and indentations with a length of ≥0.5mm generated during the precision rolling process will directly lead to cracking or surface coating peeling during subsequent stamping. Therefore, 100% inspection of the surface quality of magnesium sheets is required after precision rolling. Most small and medium-sized magnesium plate rolling enterprises still use the precision rolling, shearing, and offline sampling inspection mode: that is, the finished plates are randomly selected by hand and the surface defects are observed by visual inspection or magnifying glass. As a result, the sampling inspection results cannot be fed back to the rolling process in real time. Manual inspection is easily affected by fatigue and experience differences, and the recognition rate of fine scratches is insufficient. Furthermore, it is impossible to inspect the upper and lower surfaces of the plate at the same time. There is no inspection data record, and it is impossible to associate the defect location with the rolling parameters, making it difficult to achieve a closed loop of process optimization. The load-bearing frames of existing equipment mostly use ordinary rectangular cross-section beams, which are insufficient in bending and torsional strength under the same material usage. At the same time, the frames are mostly simply bolted to the ground, resulting in a small contact area and uneven load distribution. When the magnesium plate is transported, vibrations occur, or when the detection unit is running, small impacts can easily cause the beams to deform and the frame to shift, which in turn causes the detection field of view to be misaligned. Existing equipment mostly uses ring light sources or side light sources, which cannot suppress strong reflections, resulting in a contrast ratio of less than 10:1 between scratches and background, and blurry images. In addition, there is no dedicated background processing structure when detecting the lower surface, and ground stray light reflections can easily cause image overexposure. Furthermore, industrial lenses do not have a locking mechanism after adjustment, and vibrations can easily cause focal length shifts, further reducing detection accuracy. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an online quality inspection device for rolling magnesium lightweight materials, which can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an online quality inspection device for rolling magnesium lightweight materials, comprising gantry columns, I-beams, and a bottom beam. The two gantry columns form an integral frame. The I-beams are fixedly connected to the top of the two gantry columns, and the bottom beam is fixedly connected to the lower middle position of the two gantry columns. A gantry flange is fixedly connected to the bottom of each gantry column, and the gantry flange is fixedly connected to the ground.

[0005] Preferably, an alarm device mounting plate is fixedly connected to the upper right side of the gantry column, and an audible and visual alarm device is fixedly connected to the alarm device mounting plate.

[0006] Preferably, two sensor brackets are fixedly connected to the middle of the front side of the gantry column, and photoelectric correction sensors are fixedly connected to the sensor brackets. The height of the photoelectric correction sensors is the same as the height of the magnesium plate.

[0007] Preferably, a control box is fixedly connected to the left side of the gantry column, a touch screen is fixedly connected to the front of the control box, a boat-shaped power switch is provided at the lower left of the touch screen, and a mushroom-shaped emergency stop button is provided to the right of the boat-shaped power switch. The boat-shaped power switch and the mushroom-shaped emergency stop button are fixedly connected to the front of the control box.

[0008] Preferably, the control box has louvered heat dissipation holes on the left side.

[0009] Preferably, a background board support is provided below the bottom crossbeam, and a black light-absorbing background board is fixedly connected to the background board support.

[0010] Preferably, a camera bracket is fixedly connected to the bottom crossbeam, an industrial camera is fixedly connected to the camera bracket, light source brackets are fixedly connected to both sides of the industrial camera, a strip coaxial light source is fixedly connected to the light source bracket, an industrial camera is fixedly connected to the top of the industrial lens, two adjustment rings are provided on the industrial lens, a positioning pin is rotatably connected to the side of the industrial lens near the industrial camera, and a hole that cooperates with the positioning pin is provided on the industrial camera.

[0011] Preferably, the strip coaxial light source, the light source bracket, the camera bracket, the industrial lens, the positioning pin, and the industrial camera constitute a surface inspection unit.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This online quality inspection device for rolling lightweight magnesium materials uses an I-beam as its core load-bearing structure. Compared to a standard rectangular cross-section, it offers superior bending and torsional strength for the same material usage, effectively reducing vibration and deformation during operation. Simultaneously, the gantry columns are rigidly connected to the ground via flanges, increasing the contact area and dispersing load-bearing pressure, preventing reference offsets caused by magnesium plate conveying and the operation of the inspection unit. Furthermore, a black light-absorbing background plate and a strip-shaped coaxial light source form a light source-background synergistic optimization, eliminating stray light interference from the lower surface. Combined with the locking design of the industrial lens positioning pins, it ensures long-term stable inspection accuracy, effectively solving the inspection error problems caused by structural deformation and stray light interference in existing devices.

[0013] 2. This online quality inspection device for the rolling of lightweight magnesium materials features two symmetrically distributed surface inspection units that can simultaneously inspect the upper and lower surfaces of magnesium plates, eliminating the need for two separate inspections and significantly improving inspection efficiency. The surface inspection units are integrated and fixed via standardized light source and camera brackets, ensuring precise matching between the light source illumination angle and the camera shooting angle. The standardized design of the brackets facilitates the replacement of light sources with different power levels or cameras with different resolutions to adapt to the inspection needs and accuracy upgrade requirements of magnesium plates of different specifications. At the same time, photoelectric correction sensors correct the lateral offset of the plate in real time, avoiding missed inspections due to plate misalignment, further ensuring the continuity and efficiency of inspection.

[0014] 3. This online quality inspection device for rolling lightweight magnesium materials integrates a touch screen, PLC controller, and image acquisition card in its control box. It achieves intelligent control of the entire process, including equipment self-inspection, parameter calibration, defect identification, and data storage. Operators can complete all operations through the touch screen, and the inspection data is stored in association with the plate number for easy quality traceability. The system has a complete fault protection and alarm mechanism. In case of hardware failure, the inspection can be automatically paused and the fault type can be indicated. In an emergency, the linkage signal can be quickly cut off through the mushroom-shaped emergency stop button. Combined with the dual prompts of the audible and visual alarm device, the operational safety is effectively improved, solving the problems of low intelligence, delayed fault response, and insufficient safety protection of existing devices. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the online quality inspection device for rolling magnesium lightweight materials according to this utility model; Figure 2 This is a right-side bottom view schematic diagram of the online quality inspection device for rolling magnesium lightweight materials according to this utility model; Figure 3 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0016] Reference numerals: 1. Gantry column; 2. I-beam; 3. Control box; 4. Louvered ventilation holes; 5. Boat-shaped power switch; 6. Touch screen; 7. Mushroom-shaped emergency stop button; 8. Bottom beam; 9. Gantry flange; 10. Black light-absorbing background panel; 11. Background panel bracket; 12. Sensor bracket; 13. Photoelectric correction sensor; 14. Audible and visual alarm device; 15. Alarm device mounting plate; 16. Strip coaxial light source; 17. Light source bracket; 18. Camera bracket; 19. Industrial lens; 20. Positioning pin; 21. Industrial camera. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Please see Figure 1-3 This utility model provides a technical solution: an online quality inspection device for rolling magnesium lightweight materials, including a gantry column 1, an I-beam crossbeam 2, and a bottom crossbeam 8. The two gantry columns 1 are a whole unit. The I-beam crossbeam 2 is fixedly connected to the top of the gantry column 1, and the bottom crossbeam 8 is fixedly connected to the lower middle of the gantry column 1. A gantry flange 9 is fixedly connected to the bottom of the gantry column 1 and is fixedly connected to the ground. The mechanical properties of the I-beam 2 with its I-shaped cross section are significantly superior—with the same amount of material, it has higher bending / torsional strength than ordinary rectangular cross sections. It can provide stable support and reduce vibration deformation during equipment operation, thus ensuring the equipment's stability. The gantry column 1 is rigidly connected to the ground via a flange, which increases the contact area and disperses the load-bearing pressure, preventing the equipment from shifting due to vibration caused by magnesium plate conveying or the operation of the detection unit, and further fixing the detection benchmark. An alarm device mounting plate 15 is fixedly connected to the upper right side of the gantry column 1. An audible and visual alarm device 14 is fixedly connected to the alarm device mounting plate 15. Two sensor brackets 12 are fixedly connected to the middle front side of the gantry column 1. A photoelectric correction sensor 13 is fixedly connected to the sensor bracket 12. The height of the photoelectric correction sensor 13 is the same as the height of the magnesium plate. A control box 3 is fixedly connected to the left side of the gantry column 1. A touch screen 6 is fixedly connected to the front of the control box 3. A boat-shaped power switch 5 is set at the lower left of the touch screen 6. A mushroom-shaped emergency stop button 7 is set to the right of the boat-shaped power switch 5. The boat-shaped power switch 5 and the mushroom-shaped emergency stop button 7 are fixedly connected to the front of the control box 3. A louvered heat dissipation hole 4 is set on the left side of the control box 3. A background board support 11 is set below the bottom crossbeam 8. A black light-absorbing background board 10 is fixedly connected to the background board support 11. A camera support 18 is fixedly connected to the bottom crossbeam 8. An industrial camera 21 is fixedly connected to the camera support 18. Light source supports 17 are fixedly connected to both sides of the industrial camera 21. A strip coaxial light source 16 is fixedly connected to the light source supports 17. The industrial camera 21 is fixedly connected to the top of the industrial lens 19. The industrial lens 19 is provided with two adjustment rings. The adjustment rings enable flexible adaptation of the lens focal length. A positioning pin 20 is rotatably connected to the side of the industrial lens 19 near the industrial camera 21. The industrial camera 21 is provided with a hole that cooperates with the positioning pin 20. The positioning pin 20 locks the adjusted position to prevent parameter deviation caused by vibration. The strip coaxial light source 16 and the industrial camera 21 are fixed as a whole by the light source bracket 17 and camera bracket 18, ensuring that the illumination angle of the light source and the shooting angle of the camera are always matched, avoiding misalignment caused by separate installation. At the same time, the standardized design of the bracket facilitates the replacement of light sources with different power or cameras with different resolutions in the future, adapting to the upgrading needs of magnesium plate defect detection accuracy. A surface inspection unit is composed of a strip coaxial light source 16, a light source bracket 17, a camera bracket 18, an industrial lens 19, a positioning pin 20, and an industrial camera 21. There are two sets of surface inspection units, one above the other. In the lower surface inspection unit, the camera bracket 18 is fixedly connected to the bottom crossbeam 8, and in the upper surface inspection unit, the camera bracket 18 is fixedly connected to the bottom of the I-shaped crossbeam 2. A black light-absorbing background plate 10 is set directly below the lower surface inspection unit. The two sets of surface inspection units are symmetrically installed about the magnesium plate, which can simultaneously inspect the upper and lower surfaces of the magnesium plate without having to inspect them twice, thus directly improving the efficiency of online inspection. The black light-absorbing background plate 10 is set directly below the lower surface inspection unit. Its light-absorbing properties can absorb ambient stray light and reflected light from the lower surface of the magnesium plate, eliminating the interference of background light on the imaging of the lower surface. It forms a light source-background synergistic optimization with the strip coaxial light source 16, improving the accuracy of lower surface defect detection.

[0022] Working principle: The operator turns on the device by turning on the boat-shaped power switch 5 on the front of the control box 3. The touch screen 6 lights up and enters the detection main interface. The system automatically completes the hardware self-test of the industrial camera 21, the bar coaxial light source 16, and the photoelectric correction sensor 13. If there is a fault, the alarm code will be displayed on the touch screen 6, and the sound and light alarm device 14 will emit a low-frequency prompt sound. After the self-test is passed, the system enters the calibration mode. The operator can call up the standard scratch template through the touch screen 6 and trigger the industrial camera 21 to take a picture of the template. The system automatically calibrates the focal length and light source brightness of the industrial lens 19 and updates the judgment threshold of the deep learning recognition model to ensure that the detection accuracy meets the requirements. The calibration data is automatically stored in the PLC controller inside the control box 3 for subsequent detection. After being rolled by a precision rolling mill, pure magnesium rolled sheets are continuously conveyed by the production line conveyor rollers to the gantry area of ​​the device, and the sheets pass horizontally between the upper and lower sets of surface inspection units; Two photoelectric correction sensors 13 installed on the sensor bracket 12 on the front side of the gantry column 1 detect the edge position of the board in real time. When the sensor detects the lateral deviation of the board, it immediately sends an offset signal to the PLC of the control box 3. The PLC drives the adjustment mechanism of the conveyor roller of the production line to adjust the roller angle and guide the board back to the center of the detection width, ensuring that the entire width of the board is within the detection field of view. When the front end of the board enters the detection area, the photoelectric correction sensor 13 triggers the detection signal, and the control box 3 simultaneously starts the upper and lower two sets of surface detection units. The industrial camera 21, which is fixed to the bottom camera bracket 18 of the I-beam 2, is started. The strip coaxial light source 16 on the light source bracket 17 on both sides of the camera is lit. The vertically downward coaxial light emitted by the light source is evenly irradiated on the upper surface of the plate, suppressing the strong reflection of the pure magnesium surface and highlighting the contrast between the scratches and the light and dark of the plate surface. The industrial lens 19 focuses the image of the upper surface onto the photosensitive chip of the industrial camera 21. The camera takes continuous pictures, and the image data is transmitted in real time to the image acquisition card of the control box 3 through the GigE interface. The industrial camera 21, which is fixed on the camera bracket 18 on the bottom crossbeam 8, is started synchronously. The strip coaxial light sources 16 on both sides of the camera are lit up and illuminate the lower surface of the plate. The image of the lower surface is captured by the camera after being focused by the industrial lens 19 and transmitted synchronously to the image acquisition card. At this time, the black light-absorbing background plate 10 on the background plate bracket 11 below the bottom crossbeam 8 can absorb the stray light of the lower surface light source and avoid ground reflection from interfering with the image quality of the lower surface. The processor inside the control box 3 calls the pre-trained pure magnesium scratch deep learning model to process the acquired upper and lower surface images in real time. First, it performs noise reduction, distortion correction, and contrast enhancement on the images to improve image quality. The model scans the preprocessed image pixel by pixel to identify scratch areas that meet the length characteristics, while excluding interfering features such as oxide spots and minor indentations. For the identified scratches, the system automatically calculates their length, width, and center coordinates, and compares them with the preset pass threshold to determine whether the board is qualified. During the inspection process, all image data, scratch parameters, and judgment results are associated with the board number and stored on the local hard drive of control box 3, supporting subsequent traceability and query. If the board is judged to be unqualified, the system records the reason for the unqualification simultaneously. When the system determines that there are unqualified scratches on the board, the control box 3 immediately triggers the following alarm actions: the sound and light alarm device 14 is activated, the red LED warning light flashes, the buzzer sounds continuously to remind the on-site operators to pay attention, and the touch screen 6 displays the defect image, defect parameters and unqualified judgment results in real time, so that the operators can view them intuitively. If the PLC of the control box 3 receives the judgment signal of unqualified scratches on a single board, it can send a stop signal to the PLC of the production line conveyor roller according to the preset logic. When the conveyor rollers are stopped, operators can manually re-inspect the defective boards. The inkjet / labeling device at the production line exit marks the defective locations of the boards to facilitate subsequent sorting. When the rear end of the board leaves the detection area, the photoelectric correction sensor 13 sends a detection end signal, the system turns off the light source and camera of the upper and lower surface detection units, clears the current detection data cache, and waits for the next board to enter the detection area to enter the next detection cycle; If a hardware failure occurs during the testing process, such as communication interruption of industrial camera 21 or abnormal brightness of bar coaxial light source 16, the PLC of control box 3 will immediately trigger the protection mechanism: suspend the testing process, the touch screen 6 will display the fault type and troubleshooting prompts, the audible and visual alarm device 14 will emit intermittent alarm sounds, and if the fault involves safety risks, the ship-shaped power switch 5 will automatically trip to cut off the power supply to the device. In case of an emergency, the operator can press the mushroom-shaped emergency stop button 7 on the front of the control box 3 to immediately cut off the signal linkage between the device and the production line, stop all detection actions, and ensure the safety of personnel and equipment. The emergency stop state must be reset by rotating the emergency stop button before the device can be restarted.

[0023] Structural Description: Gantry column 1: Two gantry columns 1 form a set of overall frames, which are vertically distributed on both sides of the device. The top is connected to the I-shaped crossbeam 2, the middle and lower part is connected to the bottom crossbeam 8, and the bottom is fixed to the ground through the gantry flange 9. As the core load-bearing support component of the entire device, it connects and fixes the I-shaped crossbeam 2, the bottom crossbeam 8 and other functional components, providing a stable three-dimensional installation foundation for the equipment. I-beam 2: The I-beam 2 is fixedly connected to the top of the two gantry columns 1. It adopts an I-beam cross section design. With the same amount of material, it has higher bending / torsional strength than ordinary rectangular cross section. It can stably support the weight of the upper surface detection unit and reduce vibration deformation during equipment operation, providing structural protection for the symmetrical reference of the upper and lower detection units. Control Box 3: Control Box 3 is fixedly connected to the left side of one of the gantry columns 1. It integrates core electrical components such as PLC controller, image acquisition card, processor and local hard disk. As the control center of the equipment, it is responsible for receiving signals from various sensors, processing image data, driving the actuators such as light sources and alarm devices, and realizing linkage control with the production line PLC. Louvered heat dissipation hole 4: The louvered heat dissipation hole 4 is located on the left side of the control box 3. It is designed in the shape of a louver to direct the heat generated by the electrical components inside the control box 3, such as the processor and image acquisition card, during operation, so as to avoid component failure caused by high temperature and ensure the stability of continuous online operation of the equipment. Rocker-type power switch 5: The rocker-type power switch 5 is fixedly connected to the front of the control box 3 and the lower left side of the touch screen 6. It controls the power supply of the entire device, making it convenient for operators to turn the equipment on or off. When a hardware fault involving safety risks is detected, it can automatically trip and cut off the power supply to achieve safety protection. Touch screen 6: Touch screen 6 is fixedly connected to the front of control box 3, providing operators with a visual interactive interface to display the main detection interface, equipment self-test status, defect images and parameters, fault codes and other information. It supports operators to perform operations such as parameter setting, calibration mode calling, and data query, realizing human-machine interaction. Mushroom-shaped emergency stop button 7: The mushroom-shaped emergency stop button 7 is fixedly connected to the front of the control box 3 and the right side of the boat-shaped power switch 5. It adopts a large-sized mushroom-shaped design. In an emergency, the operator can quickly press the button to immediately cut off the signal linkage between the device and the production line, stop all detection actions, and ensure the safety of personnel and equipment. The device can only be restarted after being rotated to reset. Bottom crossbeam 8: The bottom crossbeam 8 is fixedly connected to the middle of the two gantry columns 1 and is distributed parallel to the I-beam 2. It serves as the mounting carrier for the lower surface inspection unit. Its flatness design ensures the installation accuracy of the lower surface inspection unit, camera bracket, industrial camera, etc., and ensures that the shooting angle of the lower surface industrial camera is parallel to the magnesium plate surface. Gantry flange 9: Gantry flange 9 is fixedly connected to the bottom of each gantry column 1 and is rigidly connected to the ground by bolts. This increases the contact area between the gantry column 1 and the ground, disperses the load-bearing pressure of the entire equipment, and prevents the equipment from shifting due to vibrations caused by magnesium plate conveying or the operation of the detection unit, thereby further fixing the detection benchmark. Black light-absorbing background plate 10: The black light-absorbing background plate 10 is fixedly connected to the background plate bracket 11 and is located directly below the lower surface detection unit. It uses its light-absorbing properties to absorb ambient stray light and reflected light from the lower surface of the magnesium plate, eliminating the interference of background light on the imaging of the lower surface. It forms a light source background synergy optimization with the strip coaxial light source 16 to improve the detection accuracy of lower surface defects. Background board bracket 11: The background board bracket 11 is fixedly connected below the bottom crossbeam 8 and located directly below the lower surface detection unit. It provides stable installation support for the black light-absorbing background board 10 and ensures that the position of the background board is precisely aligned with the shooting field of view of the lower surface detection unit. Sensor bracket 12: Two sensor brackets 12 are fixedly connected to the front middle of the gantry column 1 and symmetrically distributed on both sides of the magnesium plate conveying path, providing precise installation and positioning for the photoelectric correction sensor 13, ensuring that the sensor detection direction is aligned with the edge of the magnesium plate; Photoelectric correction sensor 13: The photoelectric correction sensor 13 is fixedly connected to the sensor bracket 12. The installation height is consistent with the height of the magnesium plate to be detected. It detects the lateral deviation of the magnesium plate during the conveying process in real time, sends the deviation signal to the PLC of the control box 3, and drives the production line adjustment mechanism to guide the magnesium plate to the center of the detection width to avoid missed detection due to misalignment. Audible and visual alarm device 14: Audible and visual alarm device 14 is fixedly connected to alarm device mounting plate 15, and integrates red LED warning light and buzzer. When the equipment detects unqualified board material or hardware failure, it will quickly remind the operator to handle the abnormal situation through dual prompts of flashing light and alarm sound. Alarm device mounting plate 15: The alarm device mounting plate 15 is fixedly connected to the upper right side of the gantry column 1 and is used to install the audible and visual alarm device 14. It provides a stable mounting carrier for the audible and visual alarm device 14 and ensures that the alarm signal light and sound can be clearly perceived by the on-site operators. Strip coaxial light source 16: The strip coaxial light source 16 is fixedly connected to both sides of the industrial camera 21 through the light source bracket 17. Its length direction is consistent with the width of the magnesium plate. It emits coaxial light parallel to the shooting axis of the industrial camera 21, uniformly illuminating the surface of the magnesium plate, suppressing the strong reflection of the pure magnesium surface, highlighting the contrast between the scratches and the surface of the plate, and improving the clarity of defect imaging. Light source bracket 17: The light source bracket 17 is fixedly connected to both sides of the industrial camera 21 and is used to install the strip coaxial light source 16. It fixes the strip coaxial light source 16 and the industrial camera 21 as a whole, ensuring that the illumination angle of the light source and the shooting angle of the camera are always matched, avoiding misalignment caused by separate installation. The standardized design makes it easy to replace light sources with different power levels later. Camera bracket 18: The camera bracket 18 of the upper surface detection unit is fixedly connected to the bottom of the I-beam 2, and the camera bracket 18 of the lower surface detection unit is fixedly connected to the bottom beam 8. It is used to install the industrial camera 21, providing a stable installation base for the industrial camera 21, ensuring that the camera shooting angle is perpendicular to the magnesium plate surface. The standardized design facilitates the replacement of cameras with different resolutions in the future, adapting to the needs of upgrading detection accuracy. Industrial lens 19: The top of the industrial lens 19 is fixedly connected to the industrial camera 21. It is equipped with two adjustment rings: a focal length adjustment ring and an aperture adjustment ring. A positioning pin 20 is rotatably connected to the side near the industrial camera 21. The adjustment rings enable flexible adaptation of the focal length and aperture to ensure clear surface images of magnesium plates of different thicknesses. The positioning pin 20 locks the adjusted position to prevent vibration from causing parameter deviation. Positioning pin 20: The positioning pin 20 is rotatably connected to the side of the industrial lens 19 near the industrial camera 21. The industrial camera 21 has a hole that matches it. After the parameters of the industrial lens 19 are adjusted, the lens position is locked by matching the hole of the industrial camera 21 to prevent the lens from shifting due to vibration during equipment operation and to ensure long-term stable detection accuracy. Industrial camera 21: The industrial camera 21 is fixedly connected to the camera bracket 18 and is connected to the image acquisition card of the control box 3 through the GigE interface. The bottom is connected to the industrial lens 19. As the core component for image acquisition, the industrial camera 21 converts the image of the magnesium plate surface focused by the industrial lens 19 into a digital signal and transmits it to the control box 3 for processing in real time.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An online quality inspection device for rolling magnesium lightweight materials, comprising a gantry column (1), an I-beam crossbeam (2), and a bottom crossbeam (8), characterized in that: The two gantry columns (1) form an integral frame. The I-beam (2) is fixedly connected to the top of the two gantry columns (1), and the bottom beam (8) is fixedly connected to the lower middle position of the two gantry columns (1). Each gantry column (1) is fixedly connected to a gantry flange (9) at its bottom, and the gantry flange (9) is fixedly connected to the ground. An alarm device mounting plate (15) is fixedly connected to the upper right side of the gantry column (1), and an audible and visual alarm device (14) is fixedly connected to the alarm device mounting plate (15). Two sensor brackets (12) are fixedly connected to the middle of the front side of the gantry column (1). A photoelectric correction sensor (13) is fixedly connected to the sensor bracket (12). The height of the photoelectric correction sensor (13) is the same as the height of the magnesium plate.

2. The online quality inspection device for rolling lightweight magnesium materials according to claim 1, characterized in that: A control box (3) is fixedly connected to the left side of the gantry column (1), and a touch screen (6) is fixedly connected to the front of the control box (3).

3. The online quality inspection device for rolling magnesium lightweight materials according to claim 2, characterized in that: The touch screen (6) has a boat-shaped power switch (5) on the lower left and a mushroom-shaped emergency stop button (7) on the right side. The boat-shaped power switch (5) and the mushroom-shaped emergency stop button (7) are fixedly connected to the front of the control box (3).

4. The online quality inspection device for rolling lightweight magnesium materials according to claim 3, characterized in that: The control box (3) has a louvered heat dissipation hole (4) on the left side.

5. The online quality inspection device for rolling magnesium lightweight materials according to claim 4, characterized in that: A background board support (11) is provided below the bottom crossbeam (8), and a black light-absorbing background board (10) is fixedly connected to the background board support (11).

6. The online quality inspection device for rolling lightweight magnesium materials according to claim 5, characterized in that: A camera bracket (18) is fixedly connected to the bottom crossbeam (8), an industrial camera (21) is fixedly connected to the camera bracket (18), a light source bracket (17) is fixedly connected to both sides of the industrial camera (21), a strip coaxial light source (16) is fixedly connected to the light source bracket (17), and an industrial camera (21) is fixedly connected to the top of the industrial lens (19).

7. The online quality inspection device for rolling magnesium lightweight materials according to claim 6, characterized in that: The industrial lens (19) is provided with two adjustment rings. A positioning pin (20) is rotatably connected to the side of the industrial lens (19) near the industrial camera (21). The industrial camera (21) is provided with a hole that cooperates with the positioning pin (20).

8. The online quality inspection device for rolling magnesium lightweight materials according to claim 7, characterized in that: The strip coaxial light source (16), light source bracket (17), camera bracket (18), industrial lens (19), positioning pin (20) and industrial camera (21) constitute the surface inspection unit.

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