A device for detecting surface defects of a galvanized steel strip

Abstract

This invention relates to a surface defect detection device for galvanized steel strip, belonging to the technical field of galvanized steel strip surface inspection. The device includes a support plate, two support platforms with adjusting devices on one side of their top ends, and fixing devices penetrating the side walls of the two adjusting devices. One of the adjusting devices contains a driving device that cooperates with the fixing device. A transport device is slidably installed inside each of the two support platforms. Detection devices are slidably installed at the top and bottom of the inner wall of the track. By incorporating the transport device, the placement platform can effectively reduce workload and improve the convenience of operation for workers. The adjusting and fixing devices effectively enable automatic loading and unloading of the steel strip to be inspected, improving inspection efficiency. The detection devices allow the entire device to inspect both the upper and lower surfaces of the steel strip.

Description

Technical Field

[0001] This invention belongs to the field of galvanized steel strip surface inspection technology, specifically relating to a galvanized steel strip surface defect detection device. Background Technology

[0002] Surface defects are a significant factor affecting product quality during the production of galvanized steel strip. Galvanized steel strip is widely used in construction, automotive, and home appliance industries, and its surface quality directly impacts subsequent processing and performance. Therefore, timely and accurate detection of surface defects in galvanized steel strip is crucial.

[0003] Traditional methods for detecting surface defects in galvanized steel strip mainly rely on manual visual inspection or simple mechanical inspection. However, manual visual inspection suffers from low efficiency, and dirt such as oil and dust on the steel strip surface can interfere with the inspection and affect the judgment. Therefore, it is difficult to meet the requirements of high efficiency and high precision in modern production. Furthermore, the workload of loading and unloading during the inspection process is huge and poses safety hazards. Therefore, those skilled in the art have provided a device for detecting surface defects in galvanized steel strip to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and reasonably designed surface defect detection device for galvanized steel strip in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A surface defect detection device for galvanized steel strip includes a support plate, with support platforms fixedly connected to both sides of the top of the support plate. Adjustment devices are respectively provided on one side of the top of each of the two support platforms, and fixing devices are respectively installed through the side walls of the two adjustment devices. One of the adjustment devices contains a drive device that cooperates with the fixing device. A transport device is slidably installed inside each of the two support platforms. A fifth electric telescopic rod is fixedly connected to the middle of the top of the support plate. A placement plate is fixedly connected to the output end of the fifth electric telescopic rod. A track is fixedly connected to the top of the placement plate. A third limiting rod, fixedly connected to the top of the support plate, slidably passes through the top of the placement plate. Detection devices are slidably installed at the top and bottom of the inner wall of the track. The transport device includes two first electro-hydraulic rods fixedly connected to one side of the inner wall of the support platform. The output ends of the two first electro-hydraulic rods are respectively fixedly connected to a slide table that is slidably connected to the inner wall of the support platform. The front end and rear end of the slide table are respectively rotatably connected to first pulleys that slide against the inner wall of the support platform. A support mechanism is provided at the top of the slide table.

[0006] As a further optimization of the present invention, the support mechanism includes a first electric telescopic rod that is fixedly inserted through the middle of the top of the slide table. A shock absorber is fixedly connected to the output end of the first electric telescopic rod. A placement platform is rotatably connected to the movable end of the shock absorber. Adjusting rollers are rotatably inserted through both sides of the top of the placement platform. A second electric hydraulic rod that is rotatably connected to the bottom of the placement platform is rotatably connected to one side of the top of the slide table.

[0007] As a further optimization of the present invention, the adjustment device includes slide rails that are fixedly connected to both sides of the top of the support platform, and housings that are slidably connected to the top of the two slide rails. A third electro-hydraulic rod that is fixedly connected to the top of the support platform is provided at the rear end of the housing, and a pressing mechanism is provided on the front side of the top of one of the housings.

[0008] As a further optimization of the present invention, the pressing mechanism includes a mounting bracket fixedly connected to the front side of the top of the housing, a rotating shaft rotatably passing through the inner wall of the mounting bracket, a fixing frame fixedly sleeved at one end of the rotating shaft, a pressure roller cooperating with a fixing device rotatably connected to the inner wall of the fixing frame, a connecting block fixedly sleeved on the side wall of the rotating shaft, and a second electric telescopic rod rotatably connected to the top of the housing and rotatably connected to the connecting block.

[0009] As a further optimization of the present invention, the fixing device includes a sleeve that rotatably penetrates the side wall of the housing, an electric push rod is fixedly connected to the other end of the sleeve, an installation plate is fixedly sleeved on the output end of the electric push rod through the sleeve, a turntable that is rotatably connected to one side of the housing is fixedly sleeved on the side wall of the sleeve, and an expansion mechanism that cooperates with the side wall of the sleeve is provided on one side of the turntable.

[0010] As a further optimization of the present invention, the expansion mechanism includes two collars slidably sleeved on the side wall of the sleeve, and a plurality of first sliders are fixedly connected to the side walls of the two collars respectively. A plurality of top plates are slidably connected to one side of the turntable, and a second slider that slides through one side of the turntable is fixedly connected to the bottom end of the plurality of top plates respectively. The plurality of top plates are slidably engaged with the first sliders respectively, and a first limiting rod that is fixedly connected to the other side of the mounting plate is fixedly passed through the side walls of the two collars respectively.

[0011] As a further optimization of the present invention, the driving device includes a first servo motor fixedly connected to one side of the bottom of the inner wall of one of the housings, a reducer fixedly connected to the top of the inner wall of one of the housings, a first toothed chain transmission module that cooperates with the input end of the reducer being fixedly sleeved at the output end of the first servo motor, and a second toothed chain transmission module that is sleeved on the side wall of the first servo motor being fixedly sleeved at the output end of the reducer.

[0012] As a further optimization of the present invention, the detection device includes a detection shell, with limiting mechanisms cooperating with a track on both sides of the top of the detection shell. Four second limiting rods are fixedly connected to the bottom of the inner wall of the detection shell. Positioning frames are slidably sleeved on the side walls of the four second limiting rods. A first spring is sleeved on the side wall of the second limiting rod and fixedly connected to the top of the positioning frame. A second servo motor is fixedly connected to one side of the top of the positioning frame. A drive wheel that is rotatably connected to the inner wall of the positioning frame is fixedly connected to the output end of the second servo motor. The side wall of the drive wheel cooperates with the side wall of the track. A belt module is fixedly sleeved on the side wall of the drive wheel. A detection mechanism is provided at the bottom of the detection shell.

[0013] As a further optimization of the present invention, the limiting mechanism includes a power housing fixedly connected to the top of the detection housing, a third electric telescopic rod fixedly connected to the rear end of the power housing, two connecting rods rotatably connected to the output end of the third electric telescopic rod through the power housing, the other ends of the two connecting rods being rotatably connected to half gears rotatably connected to the bottom sides of the inner wall of the power housing, racks that mesh with the two half gears being slidably connected to the front sides of the power housing, rotating blocks being rotatably connected to the other ends of the two racks, and second pulleys that slide against the side wall of the track being rotatably connected to the other ends of the two rotating blocks.

[0014] As a further optimization of the present invention, the detection mechanism includes a worm gear rotatably connected to the center of the top of the positioning frame. The worm gear cooperates with a belt module. A worm wheel meshing with the worm gear is rotatably connected to the top of the positioning frame. A fixed sleeve rotatably passes through the center of the worm wheel and rotatably passes through the bottom of the inner wall of the detection shell. A second spring is provided on the inner wall of the fixed sleeve. A sliding rod fixedly connected to the second spring is slidably connected to the inner wall of the fixed sleeve. A brush is fixedly connected to the bottom end of the sliding rod. A positioning plate is fixedly connected to the other side of the inner wall of the detection shell. A fourth electric telescopic rod passes through the top of the positioning plate. A marking pen is fixedly connected to the output end of the fourth electric telescopic rod. An industrial camera is fixedly connected to the center of the bottom end of the positioning plate. Illumination lamps located on both sides of the industrial camera are fixedly connected to the bottom end of the positioning plate.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, by setting up a transport device, when it is necessary to inspect galvanized steel strip, the second electro-hydraulic rod is first retracted to drive the placement platform to rotate around the shock absorber, thereby tilting the placement platform and making one end of the placement platform contact the ground. At this time, the coiled steel strip can be pushed into the recessed position on the placement platform, and the second electro-hydraulic rod is extended to make the placement platform rotate to a horizontal state. By retracting the first electro-hydraulic rod, the slide can be driven to slide on the support platform, thereby realizing the overall movement of the workpiece. Since the workpiece is a metal part and its overall weight is relatively heavy, it cannot be handled and loaded / unloaded manually. Therefore, the placement platform can effectively reduce the labor intensity and improve the convenience of operation for workers.

[0016] 2. In this invention, by setting an adjustment device and a fixing device, after the middle of the strip steel coil is fitted onto the side wall of the fixing device, the third electric hydraulic rod can be extended to drive the housing to move, thereby allowing the fixing device to be fully inserted into the middle of the strip steel coil, improving the stability of the installation and preventing the steel coil from loosening during rotation. After the inspection is completed, the second electric telescopic rod on the housing at the recycling point is controlled to retract, and the second electric telescopic rod drives the connecting block to rotate, thereby making the rotating shaft rotate synchronously, so that the pressure roller on the fixing frame can contact the surface of the strip steel, thereby improving the strip steel's performance. The strip is pressed to prevent it from loosening during coiling. After the strip coil is fitted onto the side wall of the top plate in the middle, the mounting plate is retracted by an electric push rod. This causes the mounting plate to move synchronously with the collar on the first limit rod. Since the cross-section of the first slider is trapezoidal, multiple top plates can expand outward synchronously as the first slider moves towards the turntable. This allows the top plates to fit against the inner wall of the middle of the strip coil, thus fixing the strip coil in place. This effectively enables automatic loading and unloading of the strip for inspection, improving inspection efficiency.

[0017] 3. In this invention, a detection device is set up, and a second servo motor drives the drive wheel to rotate. Since the drive wheel contacts the side wall of the track, the entire detection device can move towards the brush side of the track side wall. During the detection process, the height of the placement plate is controlled so that the brush can fit against the surface of the strip steel. During the movement of the device, the rotation of the drive wheel can transmit power to the worm gear through the belt module. As the worm gear rotates, it drives the worm wheel to rotate synchronously. At this time, the brush will rotate under the drive of the fixed sleeve to clean the surface of the strip steel to be detected. At the same time, after cleaning, the detection area is illuminated by a lamp, and the surface of the strip steel is photographed by an industrial camera. When a defect is detected, the fourth electric telescopic rod drives the marker pen to extend and retract, which can mark the problem area. By setting the detection device on the track, the entire device can detect the upper and lower surfaces of the strip steel, avoiding blind spots, and the brush cleaning can improve the accuracy of the detection results. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the connection of the transport device, adjustment device, and fixing device of the present invention; Figure 3 This is a schematic diagram showing the connection of the transport device, adjustment device, and fixing device of the present invention from another perspective; Figure 4 This is a schematic diagram of the installation position of the third electro-hydraulic rod of the present invention; Figure 5 This is a schematic diagram of the installation position of the turntable of the present invention; Figure 6 This is a schematic diagram of the overall structure of the transportation device of the present invention; Figure 7 This is a schematic diagram of the overall structure of the fixing device of the present invention; Figure 8 This is a schematic diagram of the structure of the driving device of the present invention; Figure 9 This is a schematic diagram of the overall structure of the adjustment device and the drive device of the present invention; Figure 10 This is a schematic diagram of the internal structure of the adjusting device and the driving device of the present invention; Figure 11 This is a partial structural schematic diagram of the fixing device of the present invention; Figure 12 This is a schematic diagram of the connection structure between the detection device and the track of the present invention; Figure 13 This is a schematic diagram of the overall structure of the detection device of the present invention; Figure 14 This is a schematic diagram of the overall structure of the detection device of the present invention from another perspective; Figure 15 This is a schematic diagram of the installation position inside the power housing of the present invention; Figure 16 This is a schematic diagram of the internal structure of the detection device of the present invention; Figure 17 This is a partial structural schematic diagram of the detection device of the present invention.

[0019] In the diagram: 1. Transport device; 101. Slide table; 102. First electric telescopic rod; 103. Placement platform; 104. Adjusting roller; 105. First pulley; 106. First electric hydraulic rod; 107. Shock absorber; 108. Second electric hydraulic rod; 2. Adjusting device; 201. Housing; 202. Slide rail; 203. Pressure roller; 204. Third electric hydraulic rod; 205. Mounting frame; 206. Rotating shaft; 207. Connecting block; 208. Second electric telescopic rod; 209. Fixing frame; 3. Fixing device; 301. Turntable; 302. Top plate; 303. Sleeve; 304. Collar; 305. Mounting plate; 306. Electric push rod; 307. First slider; 308. First limit rod; 309. Second slider; 4. Drive device; 401. Reducer; 402. First gear chain transmission module; 403. 1. Servo motor; 404. Second gear chain drive module; 5. Detection device; 501. Detection housing; 502. Power housing; 503. Third electric telescopic rod; 504. Drive wheel; 505. Positioning frame; 506. Second servo motor; 507. Second pulley; 508. Rotating block; 509. Rack; 510. Lighting lamp; 511. Fourth electric telescopic rod; 512. Marking pen; 513. Sliding rod; 514. Brush; 515. Half gear; 516. Connecting rod; 517. First spring; 518. Second limiting rod; 519. Worm gear; 520. Fixed sleeve; 521. Worm; 522. Positioning plate; 523. Industrial camera; 524. Second spring; 525. Belt module; 6. Fifth electric telescopic rod; 7. Support plate; 8. Support platform; 9. Third limiting rod; 10. Placement plate; 11. Track. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example: Figure 1 , Figure 2 and Figure 12As shown, a surface defect detection device for galvanized steel strip includes a support plate 7. Support platforms 8 are fixedly connected to both sides of the top of the support plate 7. Adjustment devices 2 are respectively installed on one side of the top of each support platform 8. Fixing devices 3 are respectively installed through the side walls of the two adjustment devices 2. A driving device 4 that cooperates with the fixing device 3 is installed inside one of the adjustment devices 2. A transport device 1 is slidably installed inside each of the two support platforms 8. A fifth electric telescopic rod 6 is fixedly connected to the middle of the top of the support plate 7. A placement plate 10 is fixedly connected to the output end of the fifth electric telescopic rod 6. A third limiting rod 9, fixedly connected to the top of the support plate 7, slidably passes through the top of the placement plate 10. A track 11 is fixedly connected to the top of the placement plate 10. Detection devices 5 are slidably installed at the top and bottom of the inner wall of the track 11. The track 11 is a slotted track, allowing the detection devices 5 to move in a circular motion on the track 11 to perform comprehensive surface detection of the steel strip.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 8 As shown, the transport device 1 includes two first electro-hydraulic rods 106 fixedly connected to one side of the inner wall of the support platform 8. The output ends of the two first electro-hydraulic rods 106 are respectively fixedly connected to a slide table 101 that is slidably connected to the inner wall of the support platform 8. The front end and rear end of the slide table 101 are respectively rotatably connected to first pulleys 105 that slide on the inner wall of the support platform 8. By retracting the first electro-hydraulic rods 106, the slide table 101 can be driven to slide in the support platform 8, thereby realizing the overall movement of the workpiece. Since the workpiece is a metal part and its overall weight is heavy, it cannot be handled and loaded / unloaded manually. Therefore, the placement platform 103 can effectively reduce the workload and improve the convenience of operation for workers.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 8As shown, a first electric telescopic rod 102 is fixedly inserted through the middle of the top of the slide table 101. A shock absorber 107 is fixedly connected to the output end of the first electric telescopic rod 102. The shock absorber 107 is existing technology and effectively reduces the vibration of the steel coil on the placement table 103, improving its service life. The movable end of the shock absorber 107 is rotatably connected to the placement table 103. Adjusting rollers 104 are rotatably inserted through both sides of the top of the placement table 103. A second electric hydraulic rod 108 is rotatably connected to one side of the top of the slide table 101 and rotatably connected to the bottom of the placement table 103. When it is necessary to inspect the galvanized strip steel, the second electric hydraulic rod 108 is first contracted to drive the placement table 103 to rotate around the shock absorber 107, thereby tilting the placement table 103 and making one end of the placement table 103 contact the ground. At this time, the coiled strip steel can be pushed into the recessed position on the placement table 103, and the second electric hydraulic rod 108 is extended to make the placement table 103 rotate to a horizontal state.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 and Figure 10 As shown, the adjusting device 2 includes slide rails 202 that are fixedly connected to both sides of the top of the support platform 8. A housing 201 is slidably connected to the top of the two slide rails 202. A third electric hydraulic rod 204, which is fixedly connected to the top of the support platform 8, is provided at the rear end of the housing 201. After the middle part of the strip steel coil is fitted onto the side wall of the fixing device 3, the third electric hydraulic rod 204 can be extended to drive the housing 201 to move, so that the fixing device 3 can be fully inserted into the middle of the strip steel coil, improving the stability of the installation and preventing the steel coil from loosening during rotation.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 and Figure 10As shown, a mounting bracket 205 is fixedly connected to the front of the top of the housing 201. A rotating shaft 206 rotatably passes through the inner wall of the mounting bracket 205. A fixing frame 209 is fixedly sleeved at one end of the rotating shaft 206. A pressure roller 203 that cooperates with the fixing device 3 is rotatably connected to the inner wall of the fixing frame 209. A connecting block 207 is fixedly sleeved on the side wall of the rotating shaft 206. A second electric telescopic rod 208 that is rotatably connected to the top of the housing 201 and rotatably connected to the connecting block 207 is rotatably connected to the connecting block 207. After the test is completed, the second electric telescopic rod 208 on the housing 201 is controlled to retract. The second electric telescopic rod 208 drives the connecting block 207 to rotate, so that the rotating shaft 206 rotates synchronously. This allows the pressure roller 203 on the fixing frame 209 to contact the surface of the strip steel, thereby pressing the strip steel so that it will not loosen when it is coiled.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the fixing device 3 includes a sleeve 303 that rotatably penetrates the side wall of the housing 201. An electric push rod 306 is fixedly connected to the other end of the sleeve 303. An installation plate 305 is fixedly fitted through the sleeve 303 at the output end of the electric push rod 306. A turntable 301 that is rotatably connected to one side of the housing 201 is fixedly fitted on the side wall of the sleeve 303. After the strip steel coil is fitted onto the side wall of the fixing device 3 in the middle, the installation plate 305 is moved by the output end of the electric push rod 306 penetrating through the sleeve 303. The fixed end of the electric push rod 306 is fixedly connected to one end of the sleeve 303.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, two collars 304 are slidably fitted onto the side wall of the sleeve 303. Several first sliders 307 are fixedly connected to the side walls of the two collars 304. Several top plates 302 are slidably connected to one side of the turntable 301. A sliding block that cooperates with the first sliders 307 is provided at the bottom end of the top plate 302. The cross-section of the sliding block and the first slider 307 is also trapezoidal, allowing the height of the top plate 302 to change when the first slider 307 moves between the sliding block and the first slider 307. Second sliders 309 that slide through one side of the turntable 301 are fixedly connected to the bottom ends of the top plates 302. The second sliders 309 that slide through the side wall of the turntable 301 are provided on the top plates 302, which can limit the movement of the top plates 302 and improve their stability. The top plates 302 are respectively connected to the first sliders... The 307 sliding fit is achieved by fixing two collars 304 with first limiting rods 308 fixedly connected to the mounting plate 305 through their side walls. The mounting plate 305 drives the collars 304 on the first limiting rods 308 to move synchronously. Since the cross-section of the first slider 307 is trapezoidal, the first slider 307 can expand multiple top plates 302 outward synchronously as it moves toward the turntable 301, so that the top plates 302 can fit against the inner wall of the middle of the steel coil, thereby fixing the steel coil. The third electric hydraulic rod 204 pushes the housing 201 to move on the slide rail 202, which can be finely adjusted after the steel coil is sleeved on the fixing device 3, making the steel coil more stable. This effectively realizes the automatic loading and unloading of the strip steel to be inspected, improving the inspection efficiency.

[0028] like Figure 1 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the drive device 4 includes a first servo motor 403 fixedly connected to the bottom of the inner wall of one of the housings 201, a reducer 401 fixedly connected to the top of the inner wall of one of the housings 201, a first toothed chain drive module 402 that cooperates with the input end of the reducer 401 fixedly sleeved at the output end of the first servo motor 403, and a second toothed chain drive module 404 that is sleeved on the side wall of the first servo motor 403 fixedly sleeved at the output end of the reducer 401. The first toothed chain drive module 402 and the second toothed chain drive module 404 have the same structure, both consisting of sprockets and chains, which can adapt to the large torque generated by rotation, thereby avoiding chain breakage. The first servo motor 403 transmits power to the first toothed chain drive module 402, and the power is transmitted to the reducer 401. After the reducer 401 reduces the speed and increases the torque, the second toothed chain drive module 404 drives the sleeve 303 to rotate, thereby realizing the winding of the strip steel. This allows the fixing device 3 on one of the adjustment devices 2 to rewind the strip steel after the inspection is completed.

[0029] like Figure 1 , Figure 12 - Figure 17 As shown, the detection device 5 includes a detection housing 501. Four second limiting rods 518 are fixedly connected to the bottom of the inner wall of the detection housing 501. A positioning frame 505 is slidably sleeved on the side walls of the four second limiting rods 518. A first spring 517, fixedly connected to the top of the positioning frame 505, is sleeved on the side walls of the second limiting rods 518. A second servo motor 506 is fixedly connected to one side of the top of the positioning frame 505. A drive wheel 504, rotatably connected to the inner wall of the positioning frame 505, is fixedly connected to the output end of the second servo motor 506. The surface of the drive wheel 504 is a rough friction surface, which can increase the friction when 504 travels on the surface of the track 11, preventing the detection device 5 from malfunctioning during travel. During movement, the device slips, thus improving detection efficiency. The first spring 517 can apply elastic force to the positioning frame 505, so that the drive wheel 504 can always be in contact with the side wall of the track 11 to achieve movement and improve stability during movement. The side wall of the drive wheel 504 cooperates with the side wall of the track 11, and a belt module 525 is fixedly sleeved on the side wall of the drive wheel 504. The belt module 525 consists of two pulleys and a belt to realize the transmission of power. The second servo motor 506 drives the drive wheel 504 to rotate. Since the drive wheel 504 is in contact with the side wall of the track 11, the detection device 5 as a whole can move on the track 11.

[0030] like Figure 1 , Figure 12 - Figure 17 As shown, a power housing 502 is fixedly connected to the top of the detection housing 501. A third electric telescopic rod 503 is fixedly connected to the rear end of the power housing 502. The output end of the third electric telescopic rod 503 slides through the power housing 502 and is rotatably connected to two connecting rods 516. The other ends of the two connecting rods 516 are rotatably connected to half gears 515 that are rotatably connected to both sides of the bottom of the inner wall of the power housing 502. Racks 509 that mesh with the two half gears 515 are slidably connected to both sides of the front end of the power housing 502. Rotating blocks 508 are rotatably connected to the other ends of the two racks 509. The other ends of the two rotating blocks 508 are rotatably connected to the track 1. The second pulley 507, which slides on the side wall, can drive the connecting rod 516 to rotate by controlling the extension and retraction of the third electric telescopic rod 503. This causes the two half gears 515 to rotate under the drive of the connecting rod 516. Since the rack 509 meshes with the half gears 515, the distance between the two racks 509 can be adjusted, allowing the second pulley 507 to engage with the side wall of the track 11. Because the spacing between the racks 509 can be adjusted, the detection device 5 can be adapted to various specifications of the track 11, and it is easy to disassemble the detection device 5 as a whole, effectively providing convenience for maintenance and repair by the staff.

[0031] like Figure 1 , Figure 12 - Figure 17 As shown, a worm gear 521 is rotatably connected to the top center of the positioning frame 505. The worm gear 521 cooperates with the belt module 525. A worm wheel 519 that meshes with the worm gear 521 is rotatably connected to the top of the positioning frame 505. A fixed sleeve 520 that rotatably passes through the middle of the worm wheel 519 and rotatably passes through the bottom end of the inner wall of the detection housing 501 is fixedly connected to the middle of the fixed sleeve 519. A second spring 524 is provided on the inner wall of the fixed sleeve 520. A slide rod 513 that is fixedly connected to the second spring 524 is slidably connected to the inner wall of the fixed sleeve 520. A brush 514 is fixedly connected to the bottom end of the slide rod 513. The slide rod 513 has a cross-shaped rod structure and can rotate when the fixed sleeve 520 rotates. The sliding rod 513 is rotated synchronously, and the elastic force of the second spring 524 ensures that the brush 514 remains in contact with the surface of the strip steel, improving the cleaning effect. During the inspection process, the height of the placement plate 10 is controlled so that the brush 514 can remain in contact with the surface of the strip steel. During the movement of the device, the rotation of the drive wheel 504 transmits power to the worm gear 521 through the belt module 525. As the worm gear 521 rotates, it drives the worm wheel 519 to rotate synchronously. At this time, the brush 514 will rotate under the drive of the fixed sleeve 520 to clean the surface of the strip steel that needs to be inspected.

[0032] A positioning plate 522 is fixedly connected to the other side of the inner wall of the detection shell 501. A fourth electric telescopic rod 511 is fixedly fixed to the top of the positioning plate 522. A marking pen 512 is fixedly connected to the output end of the fourth electric telescopic rod 511. An industrial camera 523 is fixedly connected to the middle of the bottom end of the positioning plate 522. Lighting lamps 510 located on both sides of the industrial camera 523 are fixedly connected to the bottom end of the positioning plate 522. After cleaning, the lighting lamps 510 are used to supplement the light in the detection area, and the surface of the strip steel is photographed and inspected by the industrial camera 523. When a defect is detected, the fourth electric telescopic rod 511 is used to drive the marking pen 512 to extend and retract, so that the problem area can be marked. By setting the two detection devices 5 at the top and bottom of the inner wall of the track 11 respectively, the entire device can detect the upper and lower surfaces of the strip steel, avoiding dead corners. The brush 514 is used for cleaning, which can improve the accuracy of the detection results.

[0033] It should be noted that when this galvanized strip steel surface defect detection device detects galvanized strip steel, it first retracts the second electro-hydraulic rod 108 to drive the placement platform 103 to rotate around the shock absorber 107, thereby tilting the placement platform 103 and making one end of the placement platform 103 contact the ground. At this time, the coiled strip steel can be pushed into the recessed position on the placement platform 103, and the second electro-hydraulic rod 108 is extended to make the placement platform 103 rotate to a horizontal state. By retracting the first electro-hydraulic rod 106, the slide table 101 can be driven to slide on the support platform 8, thereby realizing the overall movement of the workpiece. After the middle of the strip steel coil is fitted onto the side wall of the fixing device 3, the third electric hydraulic rod 204 can be extended to drive the housing 201 to move, so that the fixing device 3 can be fully inserted into the middle of the strip steel coil. After the middle of the strip steel coil is fitted onto the side wall of the top plate 302, the electric push rod 306 is used to drive the mounting plate 305 to retract, so that the mounting plate 305 drives the collar 304 on the first limit rod 308 to move synchronously. Since the cross section of the first slider 307 is trapezoidal, the first slider 307 can expand multiple top plates 302 synchronously outward during the movement of the first slider 307 towards the turntable 301, so that the top plate 302 can fit against the inner wall of the middle of the steel coil, thereby fixing the steel coil. The second servo motor 506 drives the drive wheel 504 to rotate. Since the drive wheel 504 contacts the side wall of the track 11, the entire detection device 5 can move along the side wall of the track 11 towards the brush 514. During the detection process, the height of the placement plate 10 is controlled so that the brush 514 can fit against the surface of the strip steel. During the movement of the device, the rotation of the drive wheel 504 transmits power to the worm gear 521 via the belt module 525. As the worm gear 521 rotates, it drives the worm wheel 519 to rotate synchronously. At this time, the brush 514 will... Driven by the fixed sleeve 520, it rotates to clean the surface of the strip steel to be inspected. After cleaning, the inspection area is illuminated by the lighting lamp 510, and the strip steel surface is photographed and inspected by the industrial camera 523. When a defect is detected, the fourth electric telescopic rod 511 drives the marker pen 512 to extend and retract, which can mark the problem area. At this time, the two inspection devices 5 at the top and bottom of the track 11 will simultaneously clean and inspect the upper and lower surfaces of the strip steel. After the inspection is completed, the strip steel is conveyed forward, and the uninspected areas can continue to be inspected. After the inspection is completed, a first servo motor 403 is installed inside one of the adjustment devices 2. The first servo motor 403 transmits power to the first gear chain transmission module 402, and the power is transmitted to the reducer 401. The reducer 401 reduces the speed and increases the torque, and the second gear chain transmission module 404 drives the sleeve 303 to rotate. This effectively drives the sleeve 303 to rotate, so that the fixing device 3 on one of the adjustment devices 2 can rewind the strip steel after the inspection is completed. During the rewinding, several turns of steel coil need to be manually placed on the side wall of the top plate 302 to achieve the purpose of pre-installation. At the same time, the second electric telescopic rod 208 on the housing 201 of the recycling point is controlled to retract. The second electric telescopic rod 208 drives the connecting block 207 to rotate, so that the rotating shaft 206 rotates synchronously. This allows the pressure roller 203 on the fixing frame 209 to contact the surface of the strip steel, thereby pressing the strip steel and ensuring that the strip steel does not loosen when it is rewound, effectively reducing its footprint.

[0034] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A surface defect detection device for galvanized steel strip, comprising a support plate (7), characterized in that: The support plate (7) is fixedly connected to the top two sides of the support platform (8). The top one side of the two support platforms (8) is provided with an adjustment device (2). The side walls of the two adjustment devices (2) are respectively provided with a fixing device (3). One of the adjustment devices (2) is provided with a drive device (4) that cooperates with the fixing device (3). The two support platforms (8) are respectively provided with a transport device (1). The top middle of the support plate (7) is fixedly connected to the fifth electric telescopic rod (6). The output end of the fifth electric telescopic rod (6) is fixedly connected to the placement plate (10). The top of the placement plate (10) is fixedly connected to the track (11). The top of the placement plate (10) is slidably connected to the third limiting rod (9) which is fixedly connected to the top of the support plate (7). The top and bottom of the inner wall of the track (11) are respectively provided with a detection device (5). The transport device (1) includes two first electric hydraulic rods (106) fixedly connected to one side of the inner wall of the support platform (8). The output ends of the two first electric hydraulic rods (106) are respectively fixedly connected to a slide (101) that is slidably connected to the inner wall of the support platform (8). The front end and rear end of the slide (101) are respectively rotatably connected to first pulleys (105) that slide on the inner wall of the support platform (8). A support mechanism is provided at the top of the slide (101).

2. The surface defect detection device for galvanized strip steel according to claim 1, characterized in that: The support mechanism includes a first electric telescopic rod (102) that is fixedly inserted through the middle of the top of the slide (101). A shock absorber (107) is fixedly connected to the output end of the first electric telescopic rod (102). A placement platform (103) is rotatably connected to the movable end of the shock absorber (107). Adjusting rollers (104) are rotatably inserted through both sides of the top of the placement platform (103). A second electric hydraulic rod (108) is rotatably connected to the bottom of the placement platform (103) on one side of the top of the slide (101).

3. The surface defect detection device for galvanized strip steel according to claim 1, characterized in that: The adjustment device (2) includes slide rails (202) that are fixedly connected to both sides of the top of the support platform (8). The top of the two slide rails (202) are slidably connected to a housing (201). The rear end of the housing (201) is provided with a third electric hydraulic rod (204) that is fixedly connected to the top of the support platform (8). A pressing mechanism is provided on the front side of the top of one of the housings (201).

4. The surface defect detection device for galvanized strip steel according to claim 4, characterized in that: The pressing mechanism includes a mounting bracket (205) fixedly connected to the front side of the top of the housing (201). A rotating shaft (206) is rotatably passed through the inner wall of the mounting bracket (205). A fixing frame (209) is fixedly sleeved at one end of the rotating shaft (206). A pressure roller (203) cooperating with the fixing device (3) is rotatably connected to the inner wall of the fixing frame (209). A connecting block (207) is fixedly sleeved on the side wall of the rotating shaft (206). A second electric telescopic rod (208) is rotatably connected to the top of the housing (201) and rotatably connected to the connecting block (207).

5. The surface defect detection device for galvanized strip steel according to claim 3, characterized in that: The fixing device (3) includes a sleeve (303) that rotates through the side wall of the housing (201). An electric push rod (306) is fixedly connected to the other end of the sleeve (303). An installation plate (305) is fixedly sleeved through the sleeve (303) at the output end of the electric push rod (306). A turntable (301) that is rotatably connected to one side of the housing (201) is fixedly sleeved on the side wall of the sleeve (303). An expansion mechanism that cooperates with the side wall of the sleeve (303) is provided on one side of the turntable (301).

6. The surface defect detection device for galvanized strip steel according to claim 5, characterized in that: The expansion mechanism includes two collars (304) that are slidably fitted onto the side wall of the sleeve (303). The side walls of the two collars (304) are respectively fixedly connected to a plurality of first sliders (307). The turntable (301) is slidably connected to a plurality of top plates (302). The bottom ends of the plurality of top plates (302) are respectively fixedly connected to a second slider (309) that slides through the side of the turntable (301). The plurality of top plates (302) are respectively slidably engaged with the first sliders (307). The side walls of the two collars (304) are respectively fixedly connected to a first limiting rod (308) that is fixedly connected to the other side of the mounting plate (305).

7. The surface defect detection device for galvanized strip steel according to claim 3, characterized in that: The drive device (4) includes a first servo motor (403) fixedly connected to one side of the bottom of the inner wall of one of the housings (201), a reducer (401) fixedly connected to the top of the inner wall of one of the housings (201), a first gear chain transmission module (402) that cooperates with the input end of the reducer (401) is fixedly sleeved at the output end of the first servo motor (403), and a second gear chain transmission module (404) that is sleeved on the side wall of the first servo motor (403) is fixedly sleeved at the output end of the reducer (401).

8. The surface defect detection device for galvanized strip steel according to claim 1, characterized in that: The detection device (5) includes a detection shell (501). Limiting mechanisms that cooperate with the track (11) are respectively provided on both sides of the top of the detection shell (501). Four second limiting rods (518) are fixedly connected to the bottom of the inner wall of the detection shell (501). Positioning frames (505) are slidably sleeved on the side walls of the four second limiting rods (518). A first spring (517) fixedly connected to the top of the positioning frame (505) is sleeved on the side wall of the second limiting rods (518). A second servo motor (506) is fixedly connected to one side of the top of the positioning frame (505). A drive wheel (504) that is rotatably connected to the inner wall of the positioning frame (505) is fixedly connected to the output end of the second servo motor (506). The side wall of the drive wheel (504) cooperates with the side wall of the track (11). A belt module (525) is fixedly sleeved on the side wall of the drive wheel (504). A detection mechanism is provided at the bottom of the detection shell (501).

9. The surface defect detection device for galvanized strip steel according to claim 8, characterized in that: The limiting mechanism includes a power housing (502) fixedly connected to the top of the detection housing (501). A third electric telescopic rod (503) is fixedly connected to the rear end of the power housing (502). The output end of the third electric telescopic rod (503) slides through the power housing (502) and is rotatably connected to two connecting rods (516). The other end of the two connecting rods (516) is rotatably connected to half gears (515) rotatably connected to both sides of the bottom end of the inner wall of the power housing (502). The front ends of the power housing (502) are respectively slidably connected to racks (509) that mesh with the two half gears (515). The other ends of the two racks (509) are respectively rotatably connected to rotating blocks (508). The other ends of the two rotating blocks (508) are respectively rotatably connected to second pulleys (507) that slide against the side wall of the track (11).

10. The surface defect detection device for galvanized strip steel according to claim 8, characterized in that: The detection mechanism includes a worm gear (521) rotatably connected to the middle of the top of the positioning frame (505). The worm gear (521) cooperates with the belt module (525). The top of the positioning frame (505) is rotatably connected to a worm wheel (519) that meshes with the worm gear (521). A fixed sleeve (520) is fixedly inserted through the middle of the worm wheel (519) and rotatably inserted through the bottom of the inner wall of the detection housing (501). A second spring (524) is provided on the inner wall of the fixed sleeve (520). A fixed connection is slidably connected to the inner wall of the fixed sleeve (520) and fixedly connected to the second spring (524). A sliding rod (513) is connected to the bottom of the sliding rod (513), a brush (514) is fixedly connected to the bottom end of the sliding rod (513), a positioning plate (522) is fixedly connected to the other side of the inner wall of the detection shell (501), a fourth electric telescopic rod (511) is fixedly connected to the top end of the positioning plate (522), a marking pen (512) is fixedly connected to the output end of the fourth electric telescopic rod (511), an industrial camera (523) is fixedly connected to the middle of the bottom end of the positioning plate (522), and lighting lamps (510) located on both sides of the industrial camera (523) are fixedly connected to the bottom end of the positioning plate (522).

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