Automatic detection device for surface defects of cold-rolled steel plates

Abstract

The present application relates to an automatic detection device for surface defects of cold-rolled steel plates, and relates to the technical field of detection devices, in order to solve the problem that manual flipping of steel plates is time-consuming and labor-intensive, resulting in low detection efficiency. It includes a first conveyor belt, a second conveyor belt and a computer, the first conveyor belt and the second conveyor belt are in the same straight line, and a camera device is arranged above the first conveyor belt and the second conveyor belt; a workbench is arranged between the first conveyor belt and the second conveyor belt, and a flipping cavity is opened on the surface of the workbench, and an active roller is rotatably connected in the flipping cavity, and a plurality of flipping blocks are arranged on the outer wall of the active roller, and a tightening plate is slidably connected between adjacent flipping blocks; a driving component is arranged in the flipping cavity, and the flipping blocks and the tightening plate can flip the steel plate under the drive of the driving component, and a receiving component is arranged on the workbench. The present application has the effect of flipping the steel plate, reducing the time-consuming manual flipping of the heavy steel plate, and improving the detection efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of detection devices, and in particular to an automatic detection device for surface defects of cold-rolled steel plates. Background Art

[0002] Cold-rolled steel plate is a steel plate produced through the cold rolling process, referred to as cold plate. It has the characteristics of high hardness and is widely used in automobile manufacturing, electrical products, aviation and other fields.

[0003] In the related art, a device for automatically detecting surface defects of steel plates is designed. Figure 1 , which includes a conveyor belt 1, a support frame 2, a camera device 21 and a computer 22. The conveyor belt 1 can be used to transport the steel plate to be inspected. The support frame 2 is arranged on one side of the conveyor belt 1. The end of the support frame 2 that is away from the bottom surface is horizontally bent. The camera device 21 is connected to the bottom wall of the support frame 2 facing the conveyor belt 1. The camera device 21 is electrically connected to the computer 22. During use, the steel plate to be inspected is placed on the surface of the conveyor belt 1 for transportation. During the transportation process, the camera device 21 takes a photo of the surface of the steel plate and transmits the photo to the computer 22. The computer 22 analyzes the photo to detect defects on the surface of the steel plate.

[0004] With respect to the above-mentioned related patents, the inventors found that during the inspection process, one side of the steel plate was against the conveyor belt, and the camera device could not take photos of the bottom surface of the steel plate for inspection. It was necessary to manually turn the steel plate over and re-inspect it through the conveyor belt. However, due to the heavy weight of the steel plate, manual flipping of the steel plate is time-consuming and labor-intensive, affecting work efficiency, so it needs to be improved. Summary of the invention

[0005] In order to improve the problem of time-consuming and labor-intensive manual flipping of steel plates and low efficiency in defect detection, the present application provides an automatic surface defect detection device for cold-rolled steel plates.

[0006] The present application provides an automatic detection device for surface defects of cold-rolled steel plates using the following technical solutions:

[0007] A device for automatically detecting surface defects of cold-rolled steel plates, comprising a first conveyor belt, a second conveyor belt and a computer, wherein the first conveyor belt and the second conveyor belt are in the same straight line, and photographing devices are arranged above the first conveyor belt and the second conveyor belt, and the photographing devices are electrically connected to the computer; a workbench is arranged between the first conveyor belt and the second conveyor belt, a turning cavity is opened on the surface of the workbench, an active roller is rotatably connected in the turning cavity, a plurality of turning blocks are arranged on the outer wall of the active roller, a tightening plate is slidably connected between adjacent turning blocks, a baffle is arranged at one end of the tightening plate away from the turning block, and a limiting member for limiting the moving direction of the tightening plate is arranged on the workbench; a driving assembly for driving the turning block and the tightening plate to move is arranged in the turning cavity, the turning block and the tightening plate can turn over the steel plate under the drive of the driving assembly, and a receiving assembly for horizontally placing the turned steel plate is arranged on the workbench.

[0008] By adopting the above technical scheme, when detecting surface defects of cold-rolled steel plates, the cold-rolled steel plates will first be transmitted on the first conveyor belt, and the camera device above the first conveyor belt will take photos of the surface of the cold-rolled steel plates, and the photos will be transmitted to the computer, and the computer will analyze and detect the defects on the surface of the steel plates; when the cold-rolled steel plates continue to move along the first conveyor belt, they will pass above the workbench, and the driving component will start, driving the flipping block to flip along the axial direction of the active roller, and the steel plate located above the flipping block will be rotated. At this time, the tightening plate will also move toward the flipping block under the action of the driving component, and tighten the side wall of the steel plate through the baffle. With the cooperation of the flipping block and the tightening plate, the steel plate can be rotated from a horizontal state to a vertical state and further flipped. When the steel plate is turned over by more than 90°, it will fall to the other side under the action of gravity and fall on the receiving assembly, and the steel plate will be slowly lowered by the receiving assembly and finally return to a horizontal state, thus completing the turning over of the steel plate; after the steel plate is turned over, it will continue to be transmitted and transferred to the second conveyor belt, and the camera device above the second conveyor belt will take a photo of the back of the steel plate, and transmit the photo to the computer, and analyze the surface defects of the steel plate; the present application sets a workbench and components inside the workbench to turn the steel plate over, and can perform defect detection on both surfaces of the steel plate, thereby improving the time-consuming and labor-intensive manual turning over of heavy steel plates, which affects the efficiency of detection work, and at the same time can reduce the potential safety hazards of manual turning over of steel plates and improve safety.

[0009] Preferably, the limiting member includes a limiting plate connected to the end walls at both ends of the clamping pull plate and two limiting blocks, the limiting plates and the limiting blocks correspond to each other one to one, the limiting blocks are connected to the surface of the workbench, the limiting blocks are located on the side of the corresponding limiting plate away from the clamping pull plate, and the limiting blocks are penetrated along the thickness direction with a limiting groove for the limiting plate to pass through and slide.

[0010] By adopting the above technical solution, the tensioning plate slides in the limiting groove of the limiting block through the limiting plates on both sides, so that the movement direction of the tensioning plate is consistent with the length direction of the limiting groove. On the one hand, it can improve the stability of the movement of the tensioning plate, and on the other hand, it can reduce the probability of the tensioning plate falling off during the movement, and has higher stability and safety.

[0011] Preferably, the driving assembly includes a driving motor, a driven roller, a plurality of driving gears, a plurality of driven gears, a plurality of racks and a reset member, and the driving gear, the driven gear, the rack and the tightening plate correspond to each other one by one; the driving motor is arranged on the outer wall of the workbench, the output shaft of the driving motor is connected with the driving roller and can drive the driving roller to rotate, the driven roller is rotatably connected to the inner wall of the flipping chamber, and the driven roller and the driving roller are parallel to each other; several of the driving gears are sleeved on the outer wall of the driving roller, the driving gear and the flipping block are arranged at intervals, and several of the driven gears are sleeved on the outer wall of the driven roller, the driving gear is meshed with the corresponding driven gear, the rack is connected to the bottom wall of the corresponding tightening plate, and is meshed with the corresponding driven gear, and the tightening plate can slide under the drive of the driven gear and the rack; the reset member is connected to the driving motor, and the reset member can be used to reset the flipping block and the tightening plate.

[0012] By adopting the above technical solution, the driving motor is driven, and the driving motor will drive the active roller to rotate, and the active roller will drive the flip block mounted on its outer wall to flip, thereby changing the steel plate on the flip block from a horizontal state to an inclined state; when the active roller rotates, the driven roller will rotate in the opposite direction to the active roller through the meshing relationship between the active gear and the driven gear, and again through the meshing relationship between the rack and the driven gear, the tension plate can slide toward the direction of the flip block, and the side wall of the steel plate is pressed against the limit by the baffle plate, cooperating with the flip block, so that the steel plate changes from an inclined state to an inclined state. The state is further changed to a vertical state, and when the steel plate exceeds the critical state, the steel plate can be tilted toward the receiving component; when the steel plate is flipped into place, the flipping block and the tightening pull plate will be reset under the action of the reset member, so that the receiving component can smoothly lay the steel plate flat; the driving component of the present application adopts a driving motor as the power element of the flipping block and the tightening pull plate, which can make the flipping block and the tightening pull plate move synchronously and cooperate with each other to flip the steel plate, which has high convenience, saves the physical strength and time consumed by manual flipping of the steel plate, and improves work efficiency.

[0013] Preferably, the reset member includes a reset wheel, a clamping plate and two micro switches, the reset wheel is sleeved on the outer wall of the output shaft of the drive motor, the clamping plate is connected to the outer wall of the reset wheel, the two micro switches are connected to the outer wall of the workbench, the micro switch is electrically connected to the drive motor, the clamping plate is located between the buttons of the two micro switches, and the clamping plate can be abutted against the button of the micro switch after rotating with the reset wheel and drive the output shaft of the drive motor to rotate in the corresponding direction.

[0014] By adopting the above technical solution, the reset wheel will rotate with the output shaft of the driving motor. When the clamping plate abuts against the microswitch, it will squeeze the spring on the microswitch and cause the button of the microswitch to be touched. Therefore, the rotation direction of the output shaft of the driving motor can be changed through the corresponding microswitch, and the flip block and the clamping pull plate can be reset, which has high automation capability and convenience.

[0015] Preferably, a rounded corner is provided on an end wall of the flip block facing the driven roller.

[0016] By adopting the above technical solution, the opening of the rounded corners can reduce the probability of collision between the flip block and the driven roller when the flip block rotates, thereby protecting the operating stability and safety of the internal parts of the workbench.

[0017] Preferably, the receiving assembly includes a mounting frame, a rotating roller rotatably connected to the mounting frame, a rotating motor, a plurality of turntables, a plurality of clamping members and a plurality of pushing cylinders, and the turntables and the clamping members correspond to each other one by one; the mounting frame is connected to the surface of the workbench, the rotating roller is arranged in parallel with the active roller, the rotating motor is connected to the outer wall of the mounting frame, and the output shaft of the rotating motor is connected to the rotating roller and can drive the rotating roller to rotate; the plurality of turntables are rotatably connected to the outer wall of the rotating roller, the clamping members are connected to the outer walls of the corresponding turntables, the clamping members can be abutted against the surface of the steel plate after flipping and the steel plate can be slowly lowered by the rotation of the turntable; the plurality of pushing cylinders are connected to the surface of the workbench, and the piston rods of the pushing cylinders can be abutted against the end wall of the steel plate and push the steel plate back into the clamping pull plate.

[0018] By adopting the above technical solution, when the steel plate is flipped over more than 90°, the steel plate will tilt toward the receiving assembly under the action of gravity and fall on the clamping piece. The output shaft of the rotating motor drives the turntable to rotate, so that the clamping piece rotates with the turntable, and the steel plate can be slowly laid flat; when a part of the steel plate is still in contact with the baffle, the pushing cylinder is started, and the piston rod of the pushing cylinder will be in contact with the end wall of the steel plate, and the steel plate is pushed back to the inside of the clamping plate, so that the steel plate can be smoothly transmitted to the second conveyor belt; the receiving assembly of the present application can receive the steel plate after it has been flipped, improve the problem of the steel plate falling directly and damaging the steel plate, the workbench, the first conveyor belt and the second conveyor belt structure, and has higher safety and stability.

[0019] Preferably, the clamping member includes a clamping plate, a buffer plate, a plurality of connecting columns and a plurality of buffer springs, and the connecting columns and the buffer springs correspond to each other one by one; one end of the clamping plate is connected to the outer wall of the turntable, and the end of the clamping plate facing away from the turntable is bent toward the direction of the steel plate after the flipping, and the buffer plate is arranged on the end wall of the folded end of the clamping plate; a plurality of the connecting columns are connected to a side of the buffer plate facing the end wall of the clamping plate, and a plurality of connecting holes are provided on the end wall of the folded part of the clamping plate for the connecting columns to be inserted and slide, and the buffer spring is sleeved on the outer wall of the corresponding connecting column, one end of the buffer spring is connected to the buffer plate, and the other end of the buffer spring is connected to the bottom wall of the corresponding connecting hole, and a shock-absorbing pad is provided on the side of the buffer plate facing away from the clamping plate.

[0020] By adopting the above technical solution, when the steel plate falls, the steel plate will collide with the fastening part, causing the steel plate or the fastening part to be easily damaged. By arranging a buffer spring in the fastening part and arranging a shock-absorbing pad on the surface of the fastening plate, the impact of the steel plate on the fastening part can be absorbed by the compression of the shock-absorbing spring and the extrusion of the shock-absorbing pad, thereby effectively protecting the structure of the fastening part and the steel plate, reducing the damage to the steel plate itself and the fastening part caused by the impact when the steel plate falls, extending the service life of the receiving component, and having higher stability and safety.

[0021] Preferably, the baffle includes a fixed plate and a folding plate, the fixed plate is connected to the surface of the clamping plate, the folding plate is rotatably connected to the end of the fixed plate away from the clamping plate, the folding plate can be rotated in the direction away from the flip block, a reset torsion spring for resetting the flip plate is provided at the connection between the fixed plate and the folding plate, and a plurality of rollers are rotatably connected to the side of the folding plate facing the flip block, and the rollers can be pressed against the surface of the steel plate.

[0022] By adopting the above technical solution, when the steel plate falls, the side wall of the steel plate will abut against the baffle. At this time, the folding plate will rotate after bearing the pressure of the steel plate, and abut against the surface of the steel plate through the roller. This can reduce the problem that when the pushing cylinder pushes the steel plate, the baffle will cause greater wear on the surface of the steel plate and damage the structure of the steel plate, and has high practicality; when the steel plate completely falls into the inside of the tightening plate, the folding plate will be reset under the elastic force of the reset torsion spring.

[0023] Preferably, a plurality of buffer pads are arranged on the surface of the workbench, the buffer pads are spaced apart from the tightening and pulling plates, the buffer pads are located on a side of the baffle plate close to the flip block, and the buffer pads can buffer the steel plate.

[0024] By adopting the above technical solution, when the steel plate leaves the baffle, it will collide with the surface of the tension plate. The woven buffer pad can absorb part of the impact force when the steel plate falls, thereby protecting the structure of the tension plate and the steel plate, which has higher safety and practicality.

[0025] Preferably, the pushing cylinder is spaced apart from the abutting and pulling plate, and a pushing block is provided on the outer wall of the piston rod of the pushing cylinder. The pushing block can pass through the space between adjacent abutting and pulling plates and push the steel plate toward the flipping block.

[0026] By adopting the above technical solution, when the steel plate and the buffer pad are against each other, a certain friction force will be generated on the steel plate, so that the steel plate will encounter a certain resistance when passing through the first conveyor belt to the second conveyor belt, which may cause the steel plate to be skewed during transportation and affect the detection effect. By setting a pushing block, the steel plate can be further pushed in the direction of the flipping block to reduce the influence of the buffer pad on the steel plate transportation, which has high practicality.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The steel plate can be turned over by setting a turning block, a holding plate and a driving assembly, so that defects can be detected on both sides of the steel plate. The turning block turns the steel plate, and the holding plate limits the steel plate. They cooperate with each other to realize the transformation of the steel plate from a horizontal state to a vertical state. Compared with turning the steel plate by manpower, it is more efficient, more stable, can save labor, and has higher safety and convenience;

[0029] 2. The receiving assembly is provided to enable the steel plate to lie flat and stable after being flipped, thereby improving the problem that the steel plate falls directly after being flipped, causing impact on the workbench, the first conveyor belt, the second conveyor belt and itself, resulting in structural damage. This extends the service life of the device of the present application and has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an automatic detection device for steel plate surface defects in the related art.

[0031] Figure 2 It is a structural schematic diagram of an automatic detection device for surface defects of cold-rolled steel plates according to an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the structure of a workbench according to an embodiment of the present application.

[0033] Figure 4 It is a cross-sectional view of a workbench according to an embodiment of the present application.

[0034] Figure 5 yes Figure 3 A partial enlarged view of point A in the middle.

[0035] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0036] Figure 7 yes Figure 3 A partial enlarged view of point C in the middle.

[0037] Explanation of reference numerals: 1. conveyor belt; 2. support frame; 21. camera device; 22. computer; 3. first conveyor belt; 4. second conveyor belt; 5. workbench; 51. turning chamber; 52. limiter; 521. limit plate; 522. limit block; 523. limit slot; 53. buffer pad; 54. steel plate; 6. turning block; 61. active roller; 62. give way fillet; 7. tightening pull plate; 71. baffle; 711. fixed plate; 712. folding plate; 7121. roller; 713. reset torsion spring; 8. driving group Components; 81, driving motor; 82, driven roller; 83, driving gear; 84, driven gear; 85, rack; 86, reset component; 861, reset wheel; 862, tightening plate; 863, micro switch; 9, receiving assembly; 91, mounting frame; 92, rotating roller; 93, rotating motor; 94, turntable; 95, tightening component; 951, tightening plate; 9511, connecting hole; 952, buffer plate; 9521, shock-absorbing pad; 953, connecting column; 954, buffer spring; 96, pushing cylinder; 961, pushing block. DETAILED DESCRIPTION

[0038] The following is combined with Figure 2-7 This application is described in further detail.

[0039] The present application embodiment discloses an automatic detection device for surface defects of cold-rolled steel plates. Figure 2, an automatic detection device for surface defects of cold-rolled steel plates, comprising a first conveyor belt 3, a second conveyor belt 4 and a computer 22, wherein the first conveyor belt 3 and the second conveyor belt 4 are both used to transport the steel plate 54, and the first conveyor belt 3 and the second conveyor belt 4 are located in the same straight line. An L-shaped support frame 2 is provided on the ground on one side of the first conveyor belt 3 and the second conveyor belt 4, and the folded end of the support frame 2 is located above the first conveyor belt 3 or the second conveyor belt 4, and both are provided with a photographing device 21 for photographing the steel plate 54, the photographing device 21 is electrically connected to the computer 22, and the photographs taken by the photographing device 21 can be transmitted to the computer 22, and the photographs are analyzed by the computer 22, thereby detecting defects on the surface of the steel plate 54. In this embodiment, the photographing device 21 on the first conveyor belt 3 is used to photograph the front of the steel plate 54, and the photographing device 21 on the upper end of the second conveyor belt 4 is used to photograph the back of the steel plate 54.

[0040] Reference Figure 2 and Figure 3 A workbench 5 is arranged between the first conveyor belt 3 and the second conveyor belt 4. A turnover cavity 51 is provided on the surface of the workbench 5. The turnover cavity 51 runs through the width direction of the workbench 5. An active roller 61 is rotatably connected in the turnover cavity 51. The length direction of the active roller 61 is consistent with the movement direction of the first conveyor belt 3. A plurality of turnover blocks 6 are connected to the outer wall of the active roller 61 by welding. The plurality of turnover blocks 6 are evenly distributed along the length direction of the active roller 61. A tightening plate 7 is arranged between two adjacent turnover blocks 6. The surface of the tightening plate 7 facing away from the turnover block 6 is integrally formed with a material for tightening the steel plate 5. 4 is a baffle plate 71 for limiting; a limiting member 52 for limiting the abutting and pulling plate 7 is arranged in the turnover cavity 51, and the limiting member 52 includes a limiting plate 521 and two limiting blocks 522 which are integrally formed and connected to the end walls of the abutting and pulling plate 7. The limiting plate 521 and the limiting blocks 522 correspond to each other one by one. The limiting blocks 522 are connected to the bottom wall of the turnover cavity 51 by welding. The limiting blocks 522 are penetrated along the thickness direction to open a limiting through groove 523 for the corresponding limiting plate 521 to be inserted and slid, and the abutting and pulling plate 7 can slide along the length direction of the corresponding limiting through groove 523.

[0041] Reference Figure 2 and Figure 3 A driving assembly 8 for driving the flip block 6 and the pressing and pulling plate 7 to move is provided in the flip chamber 51. The flip block 6 can flip the steel plate 54 under the drive of the driving assembly 8. The pressing and pulling plate 7 slides toward the flip block 6 under the action of the driving assembly 8, and presses the side wall of the steel plate 54 through the baffle 71. The two cooperate with each other, so that the steel plate 54 can be transformed from a horizontal state to a vertical state, completing a partial flipping process.

[0042] Reference Figure 3 and Figure 4The driving assembly 8 includes a driving motor 81, a driven roller 82, a plurality of driving gears 83, a plurality of driven gears 84, a plurality of racks 85 and a reset member 86, wherein the driving gear 83, the driven gear 84, the rack 85 and the tightening plate 7 correspond to each other one by one; the base of the driving motor 81 is connected to the outer wall of the workbench 5 by welding, the output shaft of the driving motor 81 is connected to the driving roller 61, and can drive the driving roller 61 to rotate, the driven roller 82 is rotatably connected to the inner wall of the flip chamber 51, and is arranged parallel to the driving roller 61, and a clearance fillet 62 is provided at one end of the flip block 6 facing the driven roller 82, thereby reducing the probability of collision between the flip block 6 and the driven roller 82 during flipping, protecting the structure of the driven roller 82, and improving the overall safety;

[0043] Reference Figure 2 , Figure 3 and Figure 4 , a number of driving gears 83 are sleeved on the outer wall of the driving roller 61 by welding, and the driving gear 83 is spaced apart from the flip block 6, and a number of driven gears 84 are sleeved on the outer wall of the driven roller 82 by welding, and the driven gear 84 is meshed with the corresponding driving gear 83, so as to drive the driven roller 82 to rotate in the opposite direction to the driving roller 61; the rack 85 is connected to the bottom wall of the corresponding abutting and pulling plate 7 by welding, and meshed with the corresponding driven gear 84. When the driven gear 84 rotates, the abutting and pulling plate 7 can be driven to slide through the meshing of the rack 85, so that the baffle 71 can abut against the side wall of the steel plate 54, and play a limiting role in the flipping process of the steel plate 54;

[0044] Reference Figure 2 , Figure 4 and Figure 5 The reset member 86 includes a reset wheel 861, a tightening piece 862 and two micro switches 863. The reset wheel 861 is sleeved on the outer wall of the output shaft of the drive motor 81 by welding, and the tightening piece 862 is integrally formed and connected to the outer wall of the reset wheel 861. The two micro switches 863 are both connected to the outer wall of the workbench 5 by gluing and are electrically connected to the drive motor 81. The tightening piece 862 can be rotated to abut against the corresponding spring of the micro switch 863, and the output shaft of the drive motor 81 can be reversed. In this embodiment, the angle between the two micro switches 863 and the axis of the output shaft of the drive motor 81 is greater than 90°, so that the flip block 6 can be rotated 90 degrees, and the center of gravity of the steel plate 54 after flipping can be offset in the direction away from the flip block 6.

[0045] Reference Figure 2 and Figure 3A receiving assembly 9 for supporting the steel plate 54 and slowly laying the steel plate 54 flat is provided on one side of the workbench 5. The receiving assembly 9 includes a mounting frame 91, a rotating roller 92 rotatably connected to the mounting frame 91, a rotating motor 93, a plurality of turntables 94, a plurality of abutting members 95 and a plurality of pushing cylinders 96, wherein the turntables 94 and the abutting members 95 are arranged in a one-to-one correspondence; the mounting frame 91 is connected to the bottom wall of the flip chamber 51 by welding, and a plurality of turntables 94 are sleeved on the outer wall of the rotating roller 92 by welding, and are evenly distributed along the length direction of the rotating roller 92; the rotating motor 93 is connected to the side wall of the mounting frame 91, and the output shaft of the rotating motor 93 is connected to the rotating roller 92, and can drive the rotating roller 92 to rotate relative to the mounting frame 91.

[0046] Reference Figure 2 , Figure 3 and Figure 6 The pressing member 95 is connected to the corresponding side wall of the rotating disk 94. The pressing member 95 includes a pressing plate 951, a buffer plate 952, a plurality of connecting columns 953 and a plurality of buffer springs 954, wherein the connecting columns 953 and the buffer springs 954 are arranged in a one-to-one correspondence; one end of the pressing plate 951 is connected to the side wall of the rotating disk 94 by welding, and the other end is folded upward to form an L shape as a whole. The end wall of the folded part of the pressing plate 951 is provided with a plurality of connecting holes 9511 for the connecting columns 953 to be inserted and slidable. The connecting columns 953 are inserted into the corresponding connecting holes 9511, and the other end of the buffer spring 954 is connected to the bottom wall of the buffer plate 952 by welding. The buffer spring 954 is sleeved on the outer wall of the corresponding connecting column 953, one end of the buffer spring 954 is connected to the bottom wall of the buffer plate 952 by gluing, and the other end is connected to the bottom wall of the connecting hole 9511 by gluing. When the steel plate 54 falls and presses on the surface of the buffer plate 952, the buffer spring 954 will be compressed to absorb the pressure generated when the steel plate 54 falls, thereby achieving a shock-absorbing effect; the end of the buffer plate 952 away from the clamping plate 951 is connected to the shock-absorbing pad 9521 by gluing. The provision of the shock-absorbing pad 9521 can further absorb the impact of the steel plate 54, can effectively protect the structural integrity of the steel plate 54 and the clamping member 95, and has high safety and practicality.

[0047] Reference Figure 2 and Figure 3The base of the pushing cylinder 96 is connected to the surface of the mounting frame 91 by welding, and the pushing cylinder 96 is spaced apart from the tightening plate 7. After the piston rod of the pushing cylinder 96 moves, the steel plate 54 can be pushed, and the steel plate 54 is finally placed flat on the surface of the tightening plate 7 for transportation; buffer pads 53 are arranged between adjacent tightening plates 7, and when the steel plate 54 falls from the baffle 71, it will fall on the surface of the buffer pad 53, thereby absorbing part of the impact of the steel plate 54 and protecting the structural safety of the workbench 5 and the steel plate 54; the outer wall of the piston rod of each pushing cylinder 96 is connected to a pushing block 961 by welding, and the pushing block 961 can further push the steel plate 54 and make the steel plate 54 leave the surface of the buffer pad 53, thereby reducing the friction force generated by the buffer pad 53 on the steel plate 54 during the sliding process, so that the steel plate 54 can be smoothly transmitted from the first conveyor belt 3 to the second conveyor belt 4.

[0048] Reference Figure 2 , Figure 3 and Figure 7 When the locking cam 712 is in the unlocking state, the locking cam 713 is in the unlocking state, and the lock cam 714 is in the unlocking state, so that the locking cam 712 can be locked to the unlocking state.

[0049] The implementation principle of the automatic detection device for surface defects of cold-rolled steel plates in the embodiment of the present application is as follows: first, the steel plate 54 is placed on the first conveyor belt 3 for movement. When the steel plate 54 passes the photographing device 21 above the first conveyor belt 3, the photographing device 21 takes a photograph of the front side of the steel plate 54, and transmits the photograph to the computer 22 for defect detection. After the detection is completed, the steel plate 54 will continue to move along the first conveyor belt 3 toward the second conveyor belt 4. During the movement, the steel plate 54 passes through the workbench 5, and the turning block 6 and the abutting plate 7 are driven by the driving member to move. The turning block 6 lifts and turns the steel plate 54, and the baffle 71 of the abutting plate 7 abuts against the side wall of the steel plate 54. The two cooperate with each other to change the steel plate 54 from a horizontal state to a vertical state, and continue to move, so that the center of gravity of the steel plate 54 is offset in the direction away from the turning block 6. At this time, the reset member 86 is started, and the abutting plate 7 and the turning block 6 will be reset.

[0050] When the steel plate 54 falls toward the side away from the flip block 6, the steel plate 54 will abut against the clamping member 95 of the receiving assembly 9, and the steel plate 54 can be slowly laid flat through the rotation of the turntable 94. The steel plate 54 can be pushed back into the inner wall of the baffle 71 by pushing the cylinder 96, and abut against the surface of the clamping pull plate 7 after reset. At this time, the first conveyor belt 3 and the second conveyor belt 4 continue to work, and the steel plate 54 is transferred to the surface of the second conveyor belt 4, and the defects on the back of the steel plate 54 are photographed by the photographing device 21 above the second conveyor belt 4, and the photos are subsequently transmitted to the computer 22 for detection by the computer 22.

[0051] The present application discloses an automatic detection device for surface defects of cold-rolled steel plates, which improves the problem that manual turning over of steel plates 54 is required for defect detection. For steel plates 54 with large weight and volume, manual turning is time-consuming and labor-intensive, and poses a potential safety hazard. The device effectively improves the work efficiency and safety of the entire detection process.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic detection device for surface defects of cold-rolled steel plates, comprising a first conveyor belt (3), a second conveyor belt (4) and a computer (22), wherein the first conveyor belt (3) and the second conveyor belt (4) are in the same straight line, and a camera device (21) is arranged above the first conveyor belt (3) and the second conveyor belt (4), and the camera device (21) is electrically connected to the computer (22); characterized in that: A workbench (5) is arranged between the first conveyor belt (3) and the second conveyor belt (4); a turnover cavity (51) is provided on the surface of the workbench (5); an active roller (61) is rotatably connected in the turnover cavity (51); a plurality of turnover blocks (6) are arranged on the outer wall of the active roller (61); a tightening plate (7) is slidably connected between adjacent turnover blocks (6); a baffle (71) is arranged at one end of the tightening plate (7) away from the turnover block (6); (5) is provided with a limiter (52) for limiting the movement direction of the tension plate (7); a driving assembly (8) for driving the rotation block (6) and the tension plate (7) to move is provided in the rotation chamber (51); the rotation block (6) and the tension plate (7) can be driven by the driving assembly (8) to rotate the steel plate (54); and a receiving assembly (9) for horizontally placing the turned steel plate (54) is provided on the workbench (5); The driving assembly (8) comprises a driving motor (81), a driven roller (82), a plurality of driving gears (83), a plurality of driven gears (84), a plurality of racks (85) and a reset member (86), wherein the driving gear (83), the driven gear (84), the rack (85) and the tensioning plate (7) correspond to each other one by one; the driving motor (81) is arranged on the outer wall of the workbench (5), the output shaft of the driving motor (81) is connected to the driving roller (61) and can drive the driving roller (61) to rotate, the driven roller (82) is rotatably connected to the inner wall of the flip chamber (51), and the driven roller (82) and the driving roller (61) are parallel to each other; the plurality of driving gears (83), the driven gear (84), the rack (85) and the tensioning plate (7) correspond to each other one by one; The wheels (83) are sleeved on the outer wall of the active roller (61), the active gear (83) and the flip block (6) are arranged at intervals, a plurality of driven gears (84) are sleeved on the outer wall of the driven roller (82), the active gear (83) is meshed with the corresponding driven gear (84), the rack (85) is connected to the bottom wall of the corresponding abutting and pulling plate (7) and is meshed with the corresponding driven gear (84), and the abutting and pulling plate (7) can slide under the drive of the driven gear (84) and the rack (85); the reset member (86) is connected to the driving motor (81), and the reset member (86) can be used to reset the flip block (6) and the abutting and pulling plate (7); The reset member (86) comprises a reset wheel (861), a pressing piece (862) and two micro switches (863); the reset wheel (861) is sleeved on the outer wall of the output shaft of the drive motor (81); the pressing piece (862) is connected to the outer wall of the reset wheel (861); the two micro switches (863) are connected to the outer wall of the workbench (5); the micro switches (863) are electrically connected to the drive motor (81); the pressing piece (862) is located between the buttons of the two micro switches (863); after the pressing piece (862) rotates with the reset wheel (861), it can abut against the buttons of the micro switches (863) and drive the output shaft of the drive motor (81) to rotate in the corresponding direction.

2. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 1, characterized in that: The limiting member (52) comprises a limiting block (522) connected to the end walls of the two ends of the tensioning plate (7) and two limiting plates (521); the limiting plates (521) and the limiting blocks (522) correspond to each other one by one; the limiting plates (521) are connected to the surface of the workbench (5); the limiting blocks (522) are located on the side of the corresponding limiting plate (521) away from the tensioning plate (7); and the limiting plates (521) are provided with limiting through grooves (523) along the thickness direction for the limiting blocks (522) to pass through and slide.

3. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 1, characterized in that: The end wall of the turning block (6) facing the driven roller (82) is provided with a rounded corner (62).

4. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 1, characterized in that: The receiving assembly (9) comprises a mounting frame (91), a rotating roller (92) rotatably connected to the mounting frame (91), a rotating motor (93), a plurality of rotating disks (94), a plurality of abutting members (95) and a plurality of pushing cylinders (96), wherein the rotating disks (94) and the abutting members (95) correspond to each other one by one; the mounting frame (91) is connected to the surface of the workbench (5), the rotating roller (92) is arranged in parallel with the driving roller (61), the rotating motor (93) is connected to the outer wall of the mounting frame (91), and the output shaft of the rotating motor (93) is connected to the rotating roller (92). The plurality of rotating disks (94) are connected to the outer wall of the rotating roller (92), and the abutting members (95) are connected to the outer walls of the corresponding rotating disks (94). The abutting members (95) can abut against the surface of the steel plate (54) after being turned over and slowly lower the steel plate (54) through the rotation of the rotating disk (94); the plurality of pushing cylinders (96) are connected to the surface of the workbench (5), and the piston rods of the pushing cylinders (96) can abut against the end wall of the steel plate (54) and push the steel plate (54) back into the abutting pull plate (7).

5. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 4, characterized in that: The abutting member (95) comprises a abutting plate (951), a buffer plate (952), a plurality of connecting columns (953) and a plurality of buffer springs (954), wherein the connecting columns (953) and the buffer springs (954) correspond to each other one by one; one end of the abutting plate (951) is connected to the outer wall of the rotating disk (94), and the end of the abutting plate (951) which is away from the rotating disk (94) is bent toward the direction of the steel plate (54) after the steel plate (54) is turned over, and the buffer plate (952) is arranged on the end wall of the turned end of the abutting plate (951); the plurality of connecting columns (953) are connected to the buffer plate (952) faces the end wall of the clamping plate (951), and the end wall of the folded portion of the clamping plate (951) is provided with a plurality of connection holes (9511) for the connection column (953) to be inserted and slid, and the buffer spring (954) is sleeved on the outer wall of the corresponding connection column (953), one end of the buffer spring (954) is connected to the buffer plate (952), and the other end of the buffer spring (954) is connected to the bottom wall of the corresponding connection hole (9511), and a shock-absorbing pad (9521) is provided on the side of the buffer plate (952) facing away from the clamping plate (951).

6. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 1, characterized in that: The baffle (71) comprises a fixed plate (711) and a folding plate (712); the fixed plate (711) is connected to the surface of the tension plate (7); the folding plate (712) is rotatably connected to one end of the fixed plate (711) away from the tension plate (7); the folding plate (712) can be rotated in a direction away from the flip block (6); a reset torsion spring (713) for resetting the folding plate (712) is provided at the connection between the fixed plate (711) and the folding plate (712); a plurality of rollers (7121) are rotatably connected to a side of the folding plate (712) facing the flip block (6); and the rollers (7121) can be pressed against the surface of the steel plate (54).

7. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 1, characterized in that: A plurality of buffer pads (53) are arranged on the surface of the workbench (5), the buffer pads (53) are arranged at intervals from the tensioning plate (7), the buffer pads (53) are located on a side of the baffle (71) close to the turning block (6), and the buffer pads (53) can buffer the steel plate (54).

8. The automatic detection device for surface defects of cold-rolled steel sheets according to claim 4, characterized in that: The pushing cylinder (96) is spaced apart from the tightening plate (7), and a pushing block (961) is provided on the outer wall of the piston rod of the pushing cylinder (96). The pushing block (961) can pass through the space between adjacent tightening plates (7) and push the steel plate (54) toward the flip block (6).

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