Workpiece detection equipment based on computer vision detection

Abstract

The invention discloses workpiece detection equipment based on computer vision detection, and relates to the technical field of detection equipment, the workpiece detection equipment comprises a machine table assembly, a material transfer assembly is arranged on the inner side of the machine table assembly, a feeding assembly is arranged on the front side of the machine table assembly, and a trigger assembly is arranged at the bottom of the feeding assembly. In the using process, automatic feeding can be completed only by starting a servo motor, blind plate workpiece detection work can be efficiently and accurately completed without manual intervention, the labor cost is reduced, meanwhile, the detection efficiency is improved, it can be ensured that the blind plate workpieces stably and sequentially enter the material containing grooves of the different material supporting discs, and the detection efficiency is improved. The stability and reliability of the device in the detection process are improved, meanwhile, dust adsorbed on the to-be-detected face of the blind plate workpiece above the material supporting disc can be blown off, and therefore the situation that the precision of the subsequent detection result is affected due to the fact that the dust adheres to the surface of the workpiece is avoided, and the detection effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a workpiece detection equipment based on computer vision detection. Background Art

[0002] With the rapid development of computer vision technology, computer vision-based detection methods are gradually applied to the field of industrial inspection. This technology has the advantages of non-contact, fast speed, high precision, and good repeatability. During inspection, the workpiece image can be collected by an industrial camera and analyzed and processed to obtain the workpiece surface flatness information. As an important pipeline connection seal, flange blind plates are widely used in pipes and valves in agricultural irrigation systems. They can seal or temporarily close pipes and valves in agricultural irrigation systems. The flatness of the sealing surface is one of the key factors in the sealing performance of flange blind plates. Detection equipment based on computer vision technology can quickly and efficiently detect the flatness of the flange sealing surface.

[0003] In the prior art, although the inspection equipment based on computer vision inspection technology can quickly and accurately inspect the flatness of the sealing surface of the flange blind plate, during the inspection process of the flange blind plate workpiece, it is necessary to manually place the material on the table and then transport it to the bottom of the industrial camera in the visual inspection equipment through complex driving equipment for image acquisition. The loading process requires long-term manual intervention, which increases labor costs and reduces inspection efficiency.

[0004] Therefore, a workpiece detection device based on computer vision detection is proposed to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a workpiece detection device based on computer vision detection to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A workpiece detection device based on computer vision detection, comprising a machine assembly, a material transfer assembly is arranged inside the machine assembly, a material loading assembly is arranged on the front side of the machine assembly, a trigger assembly is arranged at the bottom of the material loading assembly, and a dust removal assembly is arranged on the left side of the machine assembly. The machine assembly comprises a base, a fixed shaft is fixedly connected to the top of the base near the front side, a fixed frame is fixedly connected to the top of the fixed shaft, an annular frame extending downward is fixedly connected between the outer surfaces of the fixed frame, and a mounting frame is fixedly connected to the outer surface of the annular frame near the rear side. The material transfer assembly comprises a gear sleeve, and the material loading assembly comprises a material loading channel, which is fixedly connected to the front side of the outer surface of the annular frame, a material storage barrel is fixedly connected to the top of the material loading channel near the front edge, and connecting ears are symmetrically fixedly connected to the outer surface of the material storage barrel at positions on both sides of the material storage barrel, and a rotating shaft is rotatably connected between the inner surface walls of the connecting ears through bearings, a three-claw rod is fixedly connected to the top of the rotating shaft, and a ratchet gear is fixedly connected to the bottom end of the rotating shaft.

[0007] Preferably, an industrial computer is provided at a position near the rear side of the top of the base, a servo motor is fixedly installed at a position near the front side of the top of the base through a bracket, a driving gear is fixedly connected to the output end of the servo motor, the gear sleeve is rotatably connected to the outer surface of the fixed shaft near the middle through a bearing, and the outer surface of the driving gear is meshingly connected to the outer surface of the gear sleeve.

[0008] Preferably, the outer surface of the fixed shaft is rotatably connected to a support plate at a position above the gear sleeve, and a four-claw frame is fixedly connected to the top of the gear sleeve near the edge. The four-claw frame is bent upward and a support tray is fixedly installed at the top near the four ends. A material placing trough is provided on the top of the support tray, and the bottom of the support tray is slidably fitted with the top of the support plate near the gear sleeve, and the height of the support tray is lower than the height of the fixed frame.

[0009] Preferably, an opening is provided at the bottom of the storage barrel near the rear side, the outer surface of the three-claw rod slides through the feeding channel and the outer surface of the storage barrel, a slide rail is fixedly connected to the bottom of the feeding channel near the middle position, a fill light is installed at the top of the mounting frame in front of the industrial camera, the fill light is inclined at 45°, and a suction cup unloading robot is fixedly installed on the outer surface of the annular frame near the right side through a bracket.

[0010] Preferably, the trigger assembly includes a fixed seat and a sliding plate, the fixed seat is fixedly connected to a position near the rear side of the bottom of the feeding channel, the sliding plate and the slide rail are slidably connected, and the bottom of the sliding plate is fixedly connected to a connecting seat near the middle of the rear surface. The front surface of the fixed seat is fixedly connected to the first connecting rod, the front end of the first connecting rod is fixedly connected to the limited end, the outer surface of the first connecting rod slides through the outer surface of the connecting seat, and the outer sleeve of the first connecting rod is provided with a second spring, and the two ends of the second spring are in conflict with the connecting seat and the limit end. A rotating rod is fixedly connected to a position near the rear corner of the bottom of the sliding plate, and the bottom of the supporting tray is fixedly connected to a connecting frame, the connecting frame is bent downward and extends to the outside of the annular frame, and the outer surface of the connecting frame away from the supporting tray is fixedly connected to a fin plate, and the fin plate and the rotating rod are set in conflict.

[0011] Preferably, accommodating cavities are symmetrically opened on the outer surfaces of both sides of the sliding plate near the front side, a ratchet bar is slidably connected between the inner walls of the accommodating cavity, a plurality of third springs are equidistantly fixedly connected between the outer surface of the ratchet bar and the inner wall of the accommodating cavity, and the ratchet bar and the ratchet gear are arranged in one-way meshing.

[0012] Preferably, the outer surfaces of both sides of the feeding channel are fixedly connected to a U-shaped frame near the rear side, and the outer surfaces of both sides of the feeding channel located on the inner side of the U-shaped frame are slidably penetrated by limit blocks, and the outer surfaces of the two limit blocks on the opposite sides are fixedly connected to a sliding rod, and the outer surface of the sliding rod slides through the U-shaped frame, and the outer side of the sliding rod is provided with a first spring, which respectively conflicts with the limit block and the U-shaped frame.

[0013] Preferably, the dust removal assembly includes an extension seat, which is fixedly connected to the outer surface of the annular frame near the left side, and the top of the extension seat is fixedly connected to an air cylinder, the right end of the air cylinder is fixedly connected to a connecting pipe, the front end of the connecting pipe is bent downward and extends to the inside of the annular frame, and the front end of the connecting pipe is fixedly connected to a blowing disk.

[0014] Preferably, a piston is slidably provided between the inner walls of the gas cylinder near the right side, a second connecting rod is fixedly connected to the left surface of the piston, the left end of the second connecting rod slides through the outer surface of the gas cylinder and extends outward, a fourth spring is provided on the outside of the second connecting rod, and both ends of the fourth spring respectively contact the outer surface of the piston and the left inner wall of the gas cylinder.

[0015] Preferably, the left end of the second connecting rod is fixedly connected to a connecting plate extending downward, and a resistance rod is fixedly connected to the right surface of the connecting plate near the bottom, the right end of the resistance rod is in resistance with the fin plate, and a limiting rod is fixedly connected to the right surface of the connecting plate near the middle, and the outer surface of the limiting rod slides through the outer surface of the extension seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, after the flange blind plate workpieces to be inspected are stacked and stored inside the storage barrel, as the servo motor runs, the driving gear will drive the transfer assembly to rotate. The supporting tray in the transfer assembly drives the fin plate to move to the position of the loading assembly. In the process, the trigger assembly can drive the ratchet gear and the three-claw rod to rotate 120°, so that the blind plate workpieces in the storage barrel are pushed into the loading channel in turn, and then the blind plate workpieces are entered into the loading slots of each supporting tray to cooperate with the subsequent industrial camera and suction cup unloading robot to complete the inspection and unloading. During the use of the entire device, only the servo motor needs to be started to complete the automatic loading, and the blind plate workpiece inspection operation can be completed efficiently and accurately without manual intervention, which reduces labor costs and improves detection efficiency.

[0017] 2. When the present invention is in use, when the blind plate workpiece in the storage barrel is pushed into the feeding channel, the irreversible three-claw rod can prevent the blind plate from retreating forward, and the rear side of the blind plate is limited by the limit block, so that it is in a stable state. When the subsequent blind plate enters the feeding channel, it will squeeze the blind plate limited in the feeding channel. At this time, under the action of the first spring, the limit block will move to the outside of the feeding channel and release the blind plate. When the blind plate passes, under the action of the first spring, the limit block will reset in time and limit the position of the next blind plate. The design structure is simple, which can ensure that the blind plate workpiece can stably enter the loading slot of different supporting trays in sequence, and provide stability and reliability during the detection process of the device.

[0018] 3. When the present invention is in use, when the support tray passes the position of the dust removal component, the fin plate will squeeze the resistance rod and push it to the left. At this time, under the action of the connecting plate, the second connecting rod and the piston, the external air will be drawn into the air cylinder through the blowing plate and the connecting pipe. When the support tray reaches the left position, the fin plate position will stagger away from the resistance rod. At this time, when the fourth spring pushes the piston to reset, the air inside the air cylinder will be pushed and discharged after passing through the connecting pipe and the blowing plate. The discharged air can blow off the dust adsorbed on the surface of the blind plate workpiece to be inspected above the support tray, thereby avoiding dust adhesion on the surface of the workpiece and affecting the accuracy of subsequent detection results, thereby improving the detection effect.

[0019] 4. When the present invention is used, when the industrial camera collects images of the blind plate workpiece, the 45° inclined fill light will be turned on and illuminate the sealing surface of the blind plate workpiece at an inclined angle of 45°. When the surface of the blind plate workpiece is uneven, a shadow will be formed under the action of the light, thereby improving the color characteristics of the blind plate workpiece image, reducing the difficulty of image processing, and improving processing efficiency and detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A three-dimensional diagram of a workpiece detection device based on computer vision detection according to the present invention; Figure 2 A three-dimensional diagram of a workpiece detection device based on computer vision detection according to the present invention from another angle; Figure 3 A bottom view of a workpiece detection device based on computer vision detection according to the present invention; Figure 4 It is a schematic diagram of the connection between a machine component and a material transfer component of a workpiece detection device based on computer vision detection according to the present invention; Figure 5 It is a schematic diagram of the structure of a machine component of a workpiece detection device based on computer vision detection according to the present invention; Figure 6 It is a schematic structural diagram of a material transfer component of a workpiece detection device based on computer vision detection according to the present invention; Figure 7 A three-dimensional diagram of a loading component of a workpiece detection device based on computer vision detection according to the present invention; Figure 8 It is a schematic diagram of the structure of a material storage barrel of a workpiece detection device based on computer vision detection of the present invention; Fig. 9 It is a partial structural schematic diagram of a loading component of a workpiece detection device based on computer vision detection according to the present invention; Fig.10 A cross-sectional view of a trigger component of a workpiece detection device based on computer vision detection according to the present invention; Fig.11 This is a cross-sectional view of a dust removal component of a workpiece detection device based on computer vision detection according to the present invention.

[0021] In the figure: 1. Machine assembly; 101. Base; 102. Industrial computer; 103. Servo motor; 104. Driving gear; 105. Fixed shaft; 106. Fixed frame; 107. Support plate; 108. Mounting frame; 109. Industrial camera; 110. Fill light; 111. Suction cup unloading robot; 112. Ring frame; 2. Material transfer assembly; 201. Gear sleeve; 202. Four-claw frame; 203. Material tray; 204. Material trough; 205. Connecting frame; 206. Fin plate; 3. Material loading assembly; 301. Material loading channel; 302. Connecting ear; 303. Material storage barrel; 304. Rotating shaft; 305. Three-claw rod; 306. Ratchet Wheel; 307, U-shaped frame; 308, sliding rod; 309, first spring; 310, limit block; 311, slide rail; 4, trigger assembly; 401, fixed seat; 402, first connecting rod; 403, second spring; 404, sliding plate; 405, accommodating chamber; 406, ratchet bar; 407, third spring; 408, connecting seat; 409, rotating rod; 410, limit end; 5, dust removal assembly; 501, extension seat; 502, air cylinder; 503, piston; 504, second connecting rod; 505, fourth spring; 506, connecting plate; 507, resistance rod; 508, limit rod; 509, connecting pipe; 510, blowing disk. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example: See Figure 1-Figure 11 As shown, the present invention provides a technical solution: Figure 1As shown, the workpiece detection device based on computer vision detection of this embodiment includes a machine component 1, a material transfer component 2 is arranged inside the machine component 1, a feeding component 3 is arranged on the front side of the machine component 1, a trigger component 4 is arranged at the bottom of the feeding component 3, and a dust removal component 5 is arranged on the left side of the machine component 1. The machine component 1 includes a base 101, a fixed shaft 105 is fixedly connected to the top of the base 101 near the front side, a fixed frame 106 is fixedly connected to the top of the fixed shaft 105, and a downwardly extending annular frame 112 is fixedly connected between the outer surfaces of the fixed frame 106, and the outer surface of the annular frame 112 is near the rear side. The side position is fixedly connected with a mounting frame 108, the material transfer assembly 2 includes a gear sleeve 201, and the feeding assembly 3 includes a feeding channel 301, the feeding channel 301 is fixedly connected to the front side position of the outer surface of the annular frame 112, and a storage barrel 303 is fixedly connected to the top of the feeding channel 301 near the front edge, and the outer surface of the feeding channel 301 is symmetrically fixedly connected with connecting ears 302 at positions on both sides of the storage barrel 303, and a rotating shaft 304 is rotatably connected between the inner surface walls of the connecting ears 302 through bearings, a three-claw rod 305 is fixedly connected to the top of the rotating shaft 304, and a ratchet gear 306 is fixedly connected to the bottom end of the rotating shaft 304.

[0024] An industrial computer 102 is provided at a position near the rear side of the top of the base 101, and a servo motor 103 is fixedly installed at a position near the front side of the top of the base 101 through a bracket. A driving gear 104 is fixedly connected to the output end of the servo motor 103. A gear sleeve 201 is rotatably connected to a position near the middle of the outer surface of the fixed shaft 105 through a bearing. The outer surface of the driving gear 104 is meshed with the outer surface of the gear sleeve 201. The industrial computer 102 is electrically connected to the servo motor 103, the industrial camera 109 and the fill light 110 through an external circuit, and is used to control the operation of the servo motor 103 and the fill light 110 and receive image information collected by the industrial camera 109. After the servo motor 103 is started, it can drive the driving gear 104 to rotate. When the driving gear 104 rotates, it can drive the gear sleeve 201 to rotate. The number of teeth of the driving gear 104 and the gear sleeve 201 is the same, so when the driving gear 104 rotates 90°, the gear sleeve 201 will synchronously rotate 90° in the opposite direction.

[0025] The outer surface of the fixed shaft 105 is rotatably connected to a support plate 107 at a position above the gear sleeve 201. A four-claw frame 202 is fixedly connected to the top of the gear sleeve 201 near the edge. The four-claw frame 202 is bent upward and a support tray 203 is fixedly installed at the top near the four ends. A material placement trough 204 is provided on the top of the support tray 203. The bottom of the support tray 203 is close to the gear sleeve 201 and slides with the top of the support plate 107. The height of the support tray 203 is lower than the height of the fixed frame 106. When the gear sleeve 201 rotates, it will drive the four-claw frame 202 to rotate. The four support trays 203 rotate synchronously. During the rotation of the support trays 203, the support plate 107 and the bottom of the support tray 203 are fitted together near the inner side, which supports the support tray 203 and improves the stability of the support tray 203 during rotation. The material trough 204 is used to accommodate the flange blind plate workpiece, and during the rotation, the blind plate workpiece and the annular frame 112 will be in the center of the support tray 203 after collision. The height of the fixing frame 106 is higher than the height of the support tray 203. Therefore, during the rotation of the support tray 203, the fixing frame 106 will not block the blind plate workpiece.

[0026] An opening is provided at the bottom near the rear side of the storage barrel 303, and the outer surface of the three-claw rod 305 slides through the outer surface of the feeding channel 301 and the storage barrel 303. A slide rail 311 is fixedly connected to the bottom of the feeding channel 301 near the middle position, and a fill light 110 is installed at the top of the mounting frame 108 in front of the industrial camera 109. The fill light 110 is inclined at 45°, and a suction cup unloading robot 111 is fixedly installed on the outer surface of the annular frame 112 near the right side through a bracket. The storage barrel 303 is used to store stacked blind plate workpieces, and the opening on the surface allows the blind plate workpieces inside to enter the feeding channel. In 301, when the two three-claw rods 305 rotate, the blind plate workpiece inside the storage barrel 303 will be pushed out, and because the front side of the storage barrel 303 is in a closed state, the three-claw rod 305 cannot move the blind plate workpiece forward, which has the effect of limiting the rotation direction of the three-claw rod 305 and the ratchet gear 306. The fill light 110 is used to convert electrical energy into light energy and then illuminate the blind plate workpiece, so that a shadow is formed on the uneven position. The industrial camera 109 is used to capture images of the surface of the blind plate workpiece. The suction cup unloading robot 111 can use the suction cup to absorb and fix the blind plate workpiece on the tray 203 and then take it out.

[0027] The trigger assembly 4 includes a fixed seat 401 and a sliding plate 404. The fixed seat 401 is fixedly connected to the bottom of the feeding channel 301 near the rear side. The sliding plate 404 is slidably connected to the slide rail 311. The bottom of the sliding plate 404 is fixedly connected to a connecting seat 408 near the middle of the rear surface. The front surface of the fixed seat 401 is fixedly connected to a first connecting rod 402. The front end of the first connecting rod 402 is fixedly connected to a limited end 410. The outer surface of the first connecting rod 402 slides through the outer surface of the connecting seat 408. The outer sleeve of the first connecting rod 402 is provided with a second spring 403. The two ends of the second spring 403 are in conflict with the connecting seat 408 and the limited end 410. A rotating rod 409 is fixedly connected to the bottom of the sliding plate 404 near the rear corner. The bottom of the supporting tray 203 is fixedly connected to a connecting frame 205. The connecting frame 205 is bent downward and extends to the outside of the annular frame 112. The outer surface of 205 away from the side of the supporting tray 203 is fixedly connected with a fin plate 206, and the fin plate 206 and the rotating rod 409 are set in a conflicting manner. When in use, when the fin plate 206 follows the supporting tray 203 to move and gradually approaches the loading channel 301, the curved surface of the fin plate 206 will conflict with the rotating rod 409 at the bottom of the sliding plate 404 and squeeze the rotating rod 409 to gradually drive the sliding plate 404 away from the center of the machine component 1. During the process, the connecting seat 408 at the bottom of the sliding plate 404 will cooperate with the limiting end 410 to squeeze the second spring 403 outside the first connecting rod 402 and compress it. When the supporting tray 203 reaches the position directly behind the loading channel 301, the position of the fin plate 206 will be staggered with the rotating rod 409. At this time, the second spring 403 rebounds and pushes the connecting seat 408 and the sliding plate 404 to reset. The slide rail 311 is used to slide the sliding plate 404 to the bottom of the loading channel 301.

[0028] Receiving cavities 405 are symmetrically provided on the outer surfaces of both sides of the sliding plate 404 near the front side, and ratchet bars 406 are slidably connected between the inner surface walls of the receiving cavity 405, and a plurality of third springs 407 are equidistantly fixedly connected between the outer surface of the ratchet bar 406 and the inner surface wall of the receiving cavity 405, and the ratchet bar 406 and the ratchet gear 306 are arranged in a one-way meshing manner. In the process of the sliding plate 404 moving outward, since the ratchet bar 406 in the receiving cavity 405 is in contact with the inclined surface of the ratchet gear 306, the ratchet bar 406 will be squeezed and retracted into the receiving cavity 405 and squeeze the third spring 407 to contract, and after the ratchet bar 406 passes the ratchet gear 306, the third spring 407 will push the ratchet bar 406 to move outward and reset, and the sliding plate 404 During the resetting process, the ratchet bar 406 and the ratchet gear 306 are in a meshing state, so the ratchet gears 306 on both sides will be driven to rotate synchronously during the backward movement, and the number of teeth on the surface of the ratchet bar 406 is one third of the number of teeth on the surface of the ratchet gear 306, so the ratchet gear 306 will rotate 120° and drive the upper three-claw rod 305 to rotate synchronously 120° through the rotating shaft 304. When the three-claw rod 305 rotates 120°, the three clamps formed by its three claw rods will push the blind plate workpiece at the bottom of the storage barrel 303 into the loading channel 301. When the gear sleeve 201 rotates again, the blind plate workpiece in the loading channel 301 will be released and squeezed into the loading groove 204 on the surface of the supporting tray 203 by the new blind plate workpiece, thereby completing the loading.

[0029] The outer surfaces of both sides of the feeding channel 301 near the rear side are fixedly connected with U-shaped frames 307, and the outer surfaces of both sides of the feeding channel 301 located on the inner sides of the U-shaped frames 307 are slidably penetrated with limit blocks 310, and the outer surfaces of the two limit blocks 310 on the opposite sides are fixedly connected with sliding rods 308, and the outer surfaces of the sliding rods 308 slide through the U-shaped frames 307, and the outer sleeves of the sliding rods 308 are provided with first springs 309, which respectively conflict with the limit blocks 310 and the U-shaped frames 307. When in use, when the three-claw rod 305 first pushes the blind plate workpiece in the storage barrel 303 into the feeding channel 301, the feeding channel 301 The blind plate in the material feeding channel 301 cannot retreat, and the blind plate pushed into the material feeding channel 301 will reach the position of the limit block 310 and be limited. When the subsequent blind plate enters the material feeding channel 301, it will squeeze the limited blind plate in the material feeding channel 301. At this time, the limit block 310 will move outward after being squeezed and squeeze the first spring 309 to contract. At this time, the blind plate loses its limit and passes through the limit block 310, and then the first spring 309 rebounds and squeezes the limit block 310 to reset. The design structure is simple and can ensure that the blind plate workpiece can stably enter the loading slot 204 of different material trays 203 in sequence, providing stability and reliability during the detection process of the device.

[0030] The dust removal component 5 includes an extension seat 501, which is fixedly connected to the outer surface of the annular frame 112 near the left side. The top of the extension seat 501 is fixedly connected to an air cylinder 502. The right end of the air cylinder 502 is fixedly connected to a connecting pipe 509. The front end of the connecting pipe 509 is bent downward and extends to the inner side of the annular frame 112. The front end of the connecting pipe 509 is fixedly connected to a blowing plate 510. The extension seat 501 is used to fix the air cylinder 502 on the outside of the annular frame 112. The connecting pipe 509 is used to connect the blowing plate 510 and the air cylinder 502. A plurality of air holes are provided at the bottom of the blowing plate 510. Therefore, the exhaust range of the blowing plate 510 is large, which can effectively cover the surface of the blind plate workpiece.

[0031] A piston 503 is slidably provided between the inner surface wall of the air cylinder 502 near the right side, and a second connecting rod 504 is fixedly connected to the left surface of the piston 503. The left end of the second connecting rod 504 slides through the outer surface of the air cylinder 502 and extends outward. A fourth spring 505 is sleeved on the outside of the second connecting rod 504. The two ends of the fourth spring 505 respectively conflict with the outer surface of the piston 503 and the left inner surface wall of the air cylinder 502. The left end of the second connecting rod 504 is fixedly connected to a connecting plate 506 extending downward, and a resistance rod 507 is fixedly connected to the right surface of the connecting plate 506 near the bottom. The right end of the resistance rod 507 conflicts with the fin plate 206. A limiting rod 508 is fixedly connected to the right surface of the connecting plate 506 near the middle. The outer surface of the limiting rod 508 slides through the outer surface of the extension seat 501. When in use, the rotating fin plate 206 squeezes and resists When the contact rod 507 is touched, it can be pushed to the left. When the resistance rod 507 moves, it will drive the second connecting rod 504 to move synchronously through the connecting plate 506, and when the second connecting rod 504 moves, it will drive the piston 503 inside the air cylinder 502 to move to the left. At this time, the air will be drawn into the air cylinder 502 through the blowing plate 510 and the connecting pipe 509. When the supporting tray 203 reaches the left position, the position of the fin plate 206 will be staggered away from the resistance rod 507. At this time, the fourth spring 505 compressed inside the air cylinder 502 rebounds and pushes the piston 503 to move to the right. At this time, the air inside the air cylinder 502 will be pushed, and when passing through the position of the connecting pipe 509 with a narrow inner diameter, the air will accelerate the flow and be discharged through the blowing plate 510. The discharged air can blow off the dust adsorbed on the surface of the blind plate workpiece to be detected above the supporting tray 203, and the limiting rod 508 plays a role in limiting the connecting plate 506.

[0032] The use method and working principle of this device: In this device, the surface flatness of the flange blind plate workpiece can be detected by simulating the human visual function through the industrial computer 102 matching and the industrial camera 109. When the flange blind plate is placed under the industrial camera 109, the industrial camera 109 will complete the image acquisition by taking pictures, and the digital image is obtained. The industrial computer 102 is used to filter and reduce noise, enhance contrast, and segment the target and background. After that, the geometric, texture, and color features are extracted from the processed image, and then the features are matched and classified to determine whether the surface flatness of the blind plate is qualified, thereby completing the quality inspection and ensuring the quality of the workpiece. It is an existing mature technology and will not be described in detail here. When the device is in use, the flange blind plate to be inspected is first placed with the inspection surface facing upwards and stacked into the feeding channel 301. At this time, the bottom blind plate workpiece will fall into the feeding channel 301 under the action of gravity, and then the industrial computer 102 controls the servo motor 103 to start and control the driving gear 104 to rotate intermittently counterclockwise, each time rotating 90°, and the number of teeth on the surface of the driving gear 104 is consistent with the number of teeth on the surface of the gear sleeve 201. Therefore, each rotation of the driving gear 104 will drive the gear sleeve 201 to rotate 90° clockwise. During the rotation of the gear sleeve 201, the four-claw frame 202 drives the supporting plate 203 to move toward the upper feeding channel 301. The supporting plate 203 will synchronously drive the fin plate 206 to rotate through the connecting frame 205, and the fin plate 206 gradually approaches the feeding channel During the process of sliding the channel 301, the arc surface of the fin plate 206 will contact with the rotating rod 409 at the bottom of the sliding plate 404 and squeeze the rotating rod 409 to gradually drive the sliding plate 404 away from the center of the machine component 1. During the process, the connecting seat 408 at the bottom of the sliding plate 404 will cooperate with the limiting end 410 to squeeze the second spring 403 outside the first connecting rod 402 and compress it. During the movement of the sliding plate 404 outward, since the ratchet bar 406 in the accommodating chamber 405 is in contact with the inclined surface of the ratchet gear 306, the ratchet bar 406 will be squeezed and retracted into the accommodating chamber 405 and squeeze the third spring 407 to shrink. After the ratchet bar 406 passes the ratchet gear 306, the third spring 407 will push the ratchet bar 406 to move outward and reset. When the fin plate 206 reaches the rear position of the feeding channel 301, the position of the fin plate 206 will be offset from the rotating rod 409. At this time, the second spring 403 rebounds and pushes the connecting seat 408 and the sliding plate 404 to reset. At this time, the ratchet bar 406 and the ratchet gear 306 are in a meshing state. Therefore, the ratchet gears 306 on both sides will be driven to rotate synchronously during the backward movement. The number of teeth on the surface of the ratchet bar 406 is one third of the number of teeth on the surface of the ratchet gear 306. Therefore, the ratchet gear 306 will rotate 120° and drive the three-claw rod 305 above to rotate 120° synchronously through the rotating shaft 304. When the three-claw rod 305 rotates 120°, the three clamps formed by its three claw rods will push the blind plate workpiece at the bottom of the storage barrel 303 into the feeding channel 301. When the gear sleeve 201 is again During rotation, the blind plate workpiece in the loading channel 301 will be released and squeezed into the loading groove 204 on the surface of the supporting tray 203 by the new blind plate workpiece, thereby completing the loading. When the supporting tray 203 with the blind plate workpiece rotates to the mounting bracket 108 position on the rear side, the 45° inclined fill light 110 will be turned on and illuminate the sealing surface of the blind plate workpiece at an inclined angle of 45°. When the surface of the blind plate workpiece is uneven, a shadow will be formed under the action of the light. At this time, the industrial camera 109 obtains image information by taking pictures and transmits it to the industrial computer 102 for processing and analyzing the image to detect the qualified condition of the blind plate workpiece. With the operation of the servo motor 103, the supporting tray 203 will drive the inspected blind plate workpiece to rotate to the suction cup unloading robot 111 area.At this time, the suction cup unloading robot 111 will suck the blind plate workpiece and put it into the corresponding position to complete the unloading, and then the support tray 203 will be put into the next round of work again. During the use of the entire device, only the servo motor 103 needs to be started to complete the automatic loading, and the blind plate workpiece detection operation can be completed efficiently and accurately without manual intervention, thereby reducing labor costs and improving detection efficiency; The first spring 309 then rebounds and squeezes the limit block 310 to re-reset the blind plate. The design is simple in structure and can ensure that the blind plate workpieces stably enter the material loading slots 204 of different material trays 203 in sequence, thereby providing stability and reliability during the detection process of the device. When the material tray 203 completes loading from the material loading component 3 area and moves and rotates toward the industrial camera 109, the fin plate 206 will squeeze the resistance rod 507 in the dust removal component 5 again and push it to the left. When the resistance rod 507 moves, it will drive the second connecting rod 504 to move synchronously through the connecting plate 506. When the second connecting rod 504 moves, it will drive the piston 503 inside the air cylinder 502 to move to the left. At this time, air will be drawn into the air cylinder 502 through the blowing plate 510 and the connecting pipe 509. When the material tray 203 reaches the left side, When the fin plate 206 is in the position, it will be offset from the resistance rod 507. At this time, the fourth spring 505 compressed inside the air cylinder 502 rebounds and pushes the piston 503 to move to the right. At this time, the air inside the air cylinder 502 will be pushed. When passing through the connecting pipe 509 with a narrow inner diameter, the air will flow faster and be discharged through the blowing plate 510. The discharged air can blow off the dust adsorbed on the surface of the blind plate workpiece to be inspected above the supporting plate 203, which can effectively prevent dust from adhering to the surface of the workpiece and affecting the accuracy of subsequent detection results, thereby improving the detection effect.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A workpiece inspection device based on computer vision inspection, comprising a machine assembly (1), characterized in that: A material transfer assembly (2) is arranged inside the machine assembly (1), a material loading assembly (3) is arranged on the front side of the machine assembly (1), a trigger assembly (4) is arranged at the bottom of the material loading assembly (3), and a dust removal assembly (5) is arranged on the left side of the machine assembly (1); The machine assembly (1) comprises a base (101), a fixed shaft (105) is fixedly connected to the top of the base (101) near the front side, a fixed frame (106) is fixedly connected to the top of the fixed shaft (105), a downwardly extending annular frame (112) is fixedly connected to the outer surface of the fixed frame (106), a mounting frame (108) is fixedly connected to the outer surface of the annular frame (112) near the rear side, and an industrial camera (109) is installed on the top of the mounting frame (108); The material transfer component (2) comprises a gear sleeve (201); The feeding assembly (3) comprises a feeding channel (301), the feeding channel (301) being fixedly connected to a position on the front side of the outer surface of the annular frame (112), a material storage barrel (303) being fixedly connected to the top of the feeding channel (301) near the front edge, connecting ears (302) being symmetrically fixedly connected to the outer surface of the feeding channel (301) at positions on both sides of the material storage barrel (303), a rotating shaft (304) being rotatably connected between the inner surface walls of the connecting ears (302) via bearings, a three-claw rod (305) being fixedly connected to the top end of the rotating shaft (304), and a ratchet gear (306) being fixedly connected to the bottom end of the rotating shaft (304).

2. The workpiece detection device based on computer vision detection according to claim 1, characterized in that: An industrial computer (102) is provided at a position near the rear side of the top of the base (101); a servo motor (103) is fixedly mounted via a bracket at a position near the front side of the top of the base (101); a driving gear (104) is fixedly connected to an output end of the servo motor (103); the gear sleeve (201) is rotatably connected to a position near the middle of an outer surface of a fixed shaft (105) via a bearing; and the outer surface of the driving gear (104) is meshedly connected to the outer surface of the gear sleeve (201).

3. The workpiece detection device based on computer vision detection according to claim 1, characterized in that: The outer surface of the fixed shaft (105) is rotatably connected to a support plate (107) at a position above the gear sleeve (201); a four-claw frame (202) is fixedly connected to the top of the gear sleeve (201) near the edge; the four-claw frame (202) is bent upward and a support tray (203) is fixedly installed at the top near the four ends; a material placement trough (204) is provided at the top of the support tray (203); a position of the bottom of the support tray (203) near the gear sleeve (201) is slidably fitted with the top of the support plate (107); and the height of the support tray (203) is lower than that of the fixed frame (106).

4. The workpiece detection device based on computer vision detection according to claim 1, characterized in that: An opening is provided at a position near the rear side of the bottom of the material storage barrel (303); the outer surface of the three-claw rod (305) slides through the outer surface of the feeding channel (301) and the material storage barrel (303); a slide rail (311) is fixedly connected to the bottom of the feeding channel (301) near the middle position; a fill light (110) is installed at a position in front of the industrial camera (109) at the top of the mounting frame (108); the fill light (110) is inclined at 45 degrees; a suction cup unloading robot (111) is fixedly installed on the outer surface of the annular frame (112) near the right side through a bracket.

5. The workpiece detection device based on computer vision detection according to claim 3, characterized in that: The trigger assembly (4) comprises a fixed seat (401) and a sliding plate (404); the fixed seat (401) is fixedly connected to a position near the rear side of the bottom of the feeding channel (301); the sliding plate (404) is slidably connected to the slide rail (311); a connecting seat (408) is fixedly connected to a position near the middle of the rear surface of the bottom of the sliding plate (404); a first connecting rod (402) is fixedly connected to the front surface of the fixed seat (401); a front end of the first connecting rod (402) is fixedly connected to a limited end (410); an outer surface of the first connecting rod (402) slides through an outer surface of the connecting seat (408); and the first connecting rod (402) is fixedly connected to the front surface of the first connecting rod (402). A second spring (403) is sleeved on the outside of the connecting rod (402), and two ends of the second spring (403) are in contact with the connecting seat (408) and the limiting end (410). A rotating rod (409) is fixedly connected to the bottom of the sliding plate (404) near the rear corner. A connecting frame (205) is fixedly connected to the bottom of the supporting tray (203), and the connecting frame (205) is bent downward and extends to the outside of the annular frame (112). A fin plate (206) is fixedly connected to the outer surface of the connecting frame (205) away from the supporting tray (203), and the fin plate (206) and the rotating rod (409) are arranged in contact.

6. The workpiece detection device based on computer vision detection according to claim 5, characterized in that: Accommodation cavities (405) are symmetrically provided at positions near the front side of the outer surfaces of both sides of the sliding plate (404); ratchet bars (406) are slidably connected between the inner surface walls of the accommodating cavities (405); a plurality of third springs (407) are equidistantly fixedly connected between the outer surface of the ratchet bar (406) and the inner surface wall of the accommodating cavities (405); and the ratchet bar (406) and the ratchet gear (306) are arranged in a one-way meshing arrangement.

7. The workpiece detection device based on computer vision detection according to claim 1, characterized in that: The outer surfaces of both sides of the feeding channel (301) are fixedly connected to U-shaped frames (307) at positions near the rear side, and the outer surfaces of both sides of the feeding channel (301) are located inside the U-shaped frames (307) and are slidably penetrated by limit blocks (310), and the outer surfaces of the two limit blocks (310) on the opposite sides are fixedly connected to sliding rods (308), and the outer surfaces of the sliding rods (308) slide through the U-shaped frames (307), and the outer part of the sliding rods (308) is sleeved with a first spring (309), and the first spring (309) is respectively in conflict with the limit blocks (310) and the U-shaped frames (307).

8. The workpiece detection device based on computer vision detection according to claim 1, characterized in that: The dust removal component (5) comprises an extension seat (501), the extension seat (501) being fixedly connected to a position close to the left side of the outer surface of the annular frame (112), the top of the extension seat (501) being fixedly connected to an air cylinder (502), the right end of the air cylinder (502) being fixedly connected to a connecting pipe (509), the front end of the connecting pipe (509) being bent downward and extending to the inside of the annular frame (112), the front end of the connecting pipe (509) being fixedly connected to an air blowing disk (510).

9. The workpiece detection device based on computer vision detection according to claim 8, characterized in that: A piston (503) is slidably arranged between the inner surface walls of the gas cylinder (502) near the right side, and a second connecting rod (504) is fixedly connected to the left surface of the piston (503). The left end of the second connecting rod (504) slides through the outer surface of the gas cylinder (502) and extends outward. A fourth spring (505) is sleeved on the outside of the second connecting rod (504), and the two ends of the fourth spring (505) are respectively in contact with the outer surface of the piston (503) and the left inner surface wall of the gas cylinder (502).

10. The workpiece detection device based on computer vision detection according to claim 9, characterized in that: The left end of the second connecting rod (504) is fixedly connected to a connecting plate (506) extending downward, and a resistance rod (507) is fixedly connected to the right surface of the connecting plate (506) near the bottom, the right end of the resistance rod (507) is in contact with the fin plate (206), and a limiting rod (508) is fixedly connected to the right surface of the connecting plate (506) near the middle, and the outer surface of the limiting rod (508) slides through the outer surface of the extension seat (501).

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