Workpiece surface defect detection equipment

Abstract

The invention relates to the technical field of defect detection, in particular to workpiece surface defect detection equipment which comprises a base, a vertical rod is fixedly arranged on the upper surface of the base, a mounting plate is fixedly arranged at the top end of the vertical rod, a rotating cylinder is rotationally connected to the outer side of the vertical rod, and a rotating disc is fixedly arranged on the outer wall of the rotating cylinder; placing discs which are annularly distributed at equal intervals are arranged on the upper surface of the rotating disc, supporting rods are fixedly arranged on the lower surfaces of the placing discs, the bottom ends of the supporting rods are connected with the upper surface of the rotating disc, and a telescopic air cylinder is fixedly arranged on the outer wall of the mounting plate in a penetrating mode. By means of the dimming mechanism, uniform and soft front illumination can be provided, surface textures and fine defects of workpieces can be highlighted, the device is particularly suitable for detecting planar workpieces or workpieces with small surface fluctuation, meanwhile, dust removal and image collection operation can be conducted on different workpieces, streamlined detection of the workpieces can be achieved, and the detection efficiency is improved. The detection efficiency is greatly improved, and the use effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of defect detection, and in particular to a workpiece surface defect detection device. Background Art

[0002] In modern industrial production, the surface quality of workpieces plays a decisive role in product performance, reliability and service life. Whether it is precision mechanical parts, automotive parts or aircraft engine blades, tiny surface defects may cause serious problems such as stress concentration, fatigue fracture, and increased corrosion, leading to product failure and even endangering life safety and major property losses. However, traditional workpiece surface defect detection methods face many difficulties and are difficult to meet the current high-standard and high-efficiency production inspection needs.

[0003] Manual visual inspection is the most primitive detection method, relying on the naked eye observation and experience judgment of the inspectors. Long-term high-intensity work can easily make inspectors fatigued, reduce visual acuity, and lead to a sharp increase in the rate of missed defect detection. Although the machine vision inspection technology that has emerged in recent years uses industrial cameras and image processing algorithms to achieve automated inspection and improve inspection efficiency and objectivity, it still has many shortcomings. First, the dust attached to the surface of the workpiece during the inspection process will cause machine vision inspection misjudgment. Secondly, the change of light source during the inspection process will also affect the judgment of machine vision inspection. Therefore, it is urgent to design a workpiece surface defect detection equipment to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the defects in the prior art and to propose a workpiece surface defect detection device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A workpiece surface defect detection device comprises a base, a vertical pole is fixedly arranged on the upper surface of the base, and a mounting plate is fixedly arranged on the top of the vertical pole, a rotating cylinder is rotatably connected to the outer side of the vertical pole, and a rotating disk is fixedly arranged on the outer wall of the rotating cylinder, a placing disk which is equidistantly distributed in an annular shape is arranged on the upper surface of the rotating disk, and a supporting rod is fixedly arranged on the lower surface of the placing disk, and the bottom end of the supporting rod is connected to the upper surface of the rotating disk, a telescopic cylinder is fixedly arranged through the outer wall of the mounting plate, and a lifting plate which is sleeved on the outer side of the vertical pole is fixedly arranged at the telescopic end of the telescopic cylinder, a connecting rod is fixedly arranged on the lower surface of the lifting plate, and a light-shielding cylinder is fixedly arranged at the end of the connecting rod, an image collector is fixedly arranged through the lifting plate, and the image collector is located in the light-shielding cylinder, and also comprises:

[0007] A dust removal mechanism, which is arranged in the lifting plate and is used to remove dust on the surface of the workpiece before detection;

[0008] A dimming mechanism, which is disposed in the light-shielding tube and is used to provide soft lighting to highlight the surface texture and subtle defects of the workpiece;

[0009] The rotating mechanism is arranged below the base and is used to drive the rotating drum to rotate outside the vertical rod.

[0010] As a further scheme of the present invention: the dust removal mechanism includes a cover arranged under the lifting plate and a fan fixedly arranged on the upper surface of the lifting plate, the air guide end of the fan is connected to an air guide duct, the outer wall of the cover is fixedly provided with a side panel, the outer wall of the lifting plate is movably provided with a first vertical rod, the top end of the first vertical rod is fixedly provided with a first baffle, and the bottom end of the first vertical rod is connected to the upper surface of the side panel, the air guide duct and the cover are connected by a hose, the bottom end of the cover is fixedly provided with a rubber gasket, the top end of the cover is fixedly provided with a touch switch, the exhaust end of the fan is connected to an exhaust duct, and a dust collection unit is also provided above the turntable for collecting blown dust.

[0011] As a further scheme of the present invention: the ash collecting unit includes a guide groove opened on the upper surface of the placing plate, and a support plate is arranged in the guide groove, the outer wall of the support plate is fixedly provided with side rods distributed in a ring at equal distances, and the ends of the side rods are connected to the inner wall of the guide groove, the lower surface of the placing plate is fixedly provided with a guide pipe connected to the guide groove, and a rubber gasket 2 is fixedly provided at the end of the guide pipe, and a suction assembly is also arranged under the lifting plate for sucking air discharged from the guide pipe, and the suction assembly and the exhaust pipe are connected through an ash filter assembly for filtering dust in the air discharged from the guide pipe.

[0012] As a further scheme of the present invention: the suction assembly includes a suction pipe fixedly arranged under the lifting plate, and a mounting rod is also fixedly arranged under the lifting plate, and the end of the mounting rod is connected to the suction pipe, a movable tube is movably arranged in the suction pipe, and a ring plate is fixedly arranged at the bottom end of the movable tube, a fixing plate is fixedly arranged on the side wall of the suction pipe, and a second vertical rod is movably arranged through the outer wall of the fixing plate, a second baffle is fixedly arranged on the top of the second vertical rod, and the bottom end of the second vertical rod is connected to the ring plate, a second spring is sleeved on the outer side of the second vertical rod, one end of the second spring is connected to the second baffle, and the other end of the second spring is connected to the fixing plate, and the distance between the ring plate and the end of the guide tube is smaller than the distance between the light-shielding tube and the placement plate.

[0013] As a further scheme of the present invention: the ash filter assembly includes a U-shaped tube, one end of the U-shaped tube is sleeved on the end of the suction tube, and the other end of the U-shaped tube is sleeved on the end of the exhaust tube, the U-shaped tube is provided with an annular groove at one end close to the suction tube, and a collecting ring is placed in the annular groove, a breathable bag is fixedly provided on the lower surface of the collecting ring, and the collecting ring is located between the annular groove and the end of the suction tube, a fixing rod is also fixedly provided on the lower surface of the lifting plate, and a fixing plate is fixedly provided on the end of the fixing rod, a movable rod is movably provided through the outer wall of the fixing plate, a stop block is fixedly provided on the top of the movable rod, and the bottom end of the movable rod is connected to the U-shaped tube, a third spring is sleeved on the outer side of the movable rod, one end of the third spring is connected to the fixing plate, and the other end of the third spring is connected to the U-shaped tube.

[0014] As a further solution of the present invention: the dimming mechanism includes electric slide rails which are equidistantly distributed in a ring shape in the light-shielding tube, and an electric slider is slidably arranged in the electric slide rails, and a fill light is fixedly arranged on the outer wall of the electric slider.

[0015] As a further solution of the present invention: the rotating mechanism includes a stepper motor fixedly arranged on the lower surface of the base, and a gear is arranged at the driving end of the stepper motor, and a tooth groove is formed on the outer wall of the rotating drum, and the gear and the tooth groove are meshed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a workpiece surface defect detection device. The workpiece to be detected can be placed on a placement plate with the help of a robot or manually. Then, the rotating drum can be driven to rotate by a rotating mechanism, so that the rotating plate rotates together, so that the workpiece to be detected can be aligned with the dust removal mechanism. Then, the lifting plate is driven downward by a telescopic cylinder, and the dust on the surface of the workpiece can be blown off by the dust removal mechanism. Then, the lifting plate is driven upward by the telescopic cylinder, and the workpiece after the dust is removed is moved under the light-shielding cylinder through the rotation of the turntable. When the lifting plate moves downward again, the light-shielding cylinder will cover the outside of the workpiece. At this time, the image collector can perform all-round image acquisition on the workpiece surface, and the acquired image can be transmitted to the intelligent image processing and defect detection system in real time. Recognition system. After preprocessing the image, the system uses the defect recognition model built by the deep learning algorithm to analyze the image. It can then identify the defects on the workpiece surface, and mark and quantify the defect information. During the detection process, the shielding effect of the shading tube can prevent the influence of external light sources on image acquisition. At the same time, the dimming mechanism can provide uniform and soft front lighting to highlight the surface texture and subtle defects of the workpiece. It is especially suitable for detecting flat workpieces or workpieces with small surface undulations, and the use effect is better. When the lifting plate moves downward, different workpieces can be cleaned and image collected separately, which can realize streamlined detection of workpieces, greatly improve the detection efficiency, and achieve better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a workpiece surface defect detection device from a first perspective provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of a workpiece surface defect detection device from a second viewing angle provided by an embodiment of the present invention;

[0020] Figure 3 A schematic structural diagram of a light shielding cylinder in a workpiece surface defect detection device provided by an embodiment of the present invention;

[0021] Figure 4 A schematic structural diagram of a dust removal mechanism in a workpiece surface defect detection device provided by an embodiment of the present invention;

[0022] Figure 5 A schematic structural diagram of a suction assembly in a workpiece surface defect detection device provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of a half-section structure of a suction tube and a U-shaped tube in a workpiece surface defect detection device provided by an embodiment of the present invention;

[0024] Figure 7A schematic diagram of the structure of a placement plate in a workpiece surface defect detection device provided by an embodiment of the present invention;

[0025] Figure 8 A third-view structural diagram of a workpiece surface defect detection device provided in an embodiment of the present invention.

[0026] In the figure: 101-base, 102-upright pole, 103-rotating drum, 104-turntable, 105-support rod, 106-placing plate, 107-mounting plate, 108-telescopic cylinder, 109-lifting plate, 110-connecting rod, 111-light shielding tube, 112-image collector, 201-fan, 202-air duct, 203-sealing cover, 204-rubber gasket 1, 205-hose, 206-side plate, 207-first vertical rod, 208-first spring, 209-first baffle, 210-touch switch, 211-exhaust pipe, 301-mounting rod, 302-suction pipe , 303-movable tube, 304-fixed plate, 305-second vertical rod, 306-ring plate, 307-second baffle, 308-second spring, 401-U-shaped tube, 402-fixed rod, 403-fixed plate, 404-movable rod, 405-third spring, 406-block, 407-collecting ring, 408-breathable bag, 501-guide groove, 502-support plate, 503-side rod, 504-guide tube, 505-rubber gasket 2, 601-electric slide rail, 602-electric slider, 603-fill light, 701-stepping motor, 702-gear, 703-tooth groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1-Figure 8As shown, a workpiece surface defect detection device provided by an embodiment of the present invention includes a base 101, a vertical rod 102 is fixedly arranged on the upper surface of the base 101, and a mounting plate 107 is fixedly arranged on the top of the vertical rod 102, a rotating drum 103 is rotatably connected to the outer side of the vertical rod 102, and a rotating disk 104 is fixedly arranged on the outer wall of the rotating drum 103, and a placing disk 106 is arranged on the upper surface of the rotating disk 104 with equal distances and annular distribution, and a supporting rod 105 is fixedly arranged on the lower surface of the placing disk 106, and the bottom end of the supporting rod 105 is connected to the upper surface of the rotating disk 104, and a telescopic cylinder 108 is fixedly arranged on the outer wall of the mounting plate 107, and the telescopic end of the telescopic cylinder 108 is fixedly arranged. A lifting plate 109 is fixedly provided which is sleeved on the outside of the vertical pole 102, a connecting rod 110 is fixedly provided on the lower surface of the lifting plate 109, and a light-shielding tube 111 is fixedly provided at the end of the connecting rod 110, an image collector 112 is fixedly provided through the lifting plate 109, and the image collector 112 is located in the light-shielding tube 111, and also includes: a dust removal mechanism, which is provided in the lifting plate 109 and is used to remove dust on the surface of the workpiece before detection; a dimming mechanism, which is provided in the light-shielding tube 111 and is used to provide soft lighting to highlight the surface texture and minor defects of the workpiece; a rotating mechanism, which is provided below the base 101 and is used to drive the rotating drum 103 to rotate on the outside of the vertical pole 102.

[0029] The workpiece to be inspected can be placed on the placement plate 106 with the help of a robot or manually, and then the rotating drum 103 can be driven to rotate by the rotating mechanism, so that the turntable 104 rotates together, so that the workpiece to be inspected can be aligned with the dust removal mechanism, and then the lifting plate 109 is driven downward by the telescopic cylinder 108, and the dust on the surface of the workpiece can be blown away by the dust removal mechanism, and then the lifting plate 109 is driven upward by the telescopic cylinder 108, and the workpiece after the dust is removed is moved under the light-shielding tube 111 by the rotation of the turntable 104. When the lifting plate 109 moves down again, the light-shielding tube 111 will cover the outside of the workpiece. At this time, the image collector 112 can collect all-round images of the workpiece surface, and the collected images can be transmitted to the intelligent image in real time. The system pre-processes the image and then uses the defect recognition model built by the deep learning algorithm to analyze the image. It can then identify the defects on the surface of the workpiece, and mark and quantify the defect information. During the detection process, the shielding effect of the light-shielding tube 111 can prevent the influence of external light sources on image acquisition. At the same time, the dimming mechanism can provide uniform and soft front lighting to highlight the surface texture and subtle defects of the workpiece. It is especially suitable for detecting flat workpieces or workpieces with small surface undulations, and the use effect is better. When the lifting plate 109 moves downward, different workpieces can be cleaned and image collected separately, which can realize streamlined detection of workpieces, greatly improve the detection efficiency, and achieve better use effect.

[0030] As an embodiment of the present invention, please refer to Figure 1 , Figure 2 and Figure 4 The dust removal mechanism includes a sealing cover 203 arranged below the lifting plate 109 and a fan 201 fixedly arranged on the upper surface of the lifting plate 109, the air guide end of the fan 201 is connected with an air guide pipe 202, the outer wall of the sealing cover 203 is fixedly provided with a side plate 206, the outer wall of the lifting plate 109 is movably provided with a first vertical rod 207, the top of the first vertical rod 207 is fixedly provided with a first baffle 209, and the bottom end of the first vertical rod 207 is connected to the upper surface of the side plate 206, the air guide pipe 202 and the sealing cover 203 are connected through a hose 205, a rubber gasket 204 is fixedly provided at the bottom end of the sealing cover 203, a touch switch 210 is fixedly provided at the top of the sealing cover 203, and the exhaust end of the fan 201 is connected with an exhaust pipe 21 1. A dust collecting unit is also arranged above the turntable 104 for collecting the blown dust. When the lifting plate 109 moves down, the sealing cover 203 moves down together until the rubber gasket 204 at the bottom of the sealing cover 203 fits with the placing plate 106. As the lifting plate 109 moves down further, the first spring 208 on the outer side of the first vertical rod 207 is compressed until the touch switch 210 on the upper surface of the sealing cover 203 contacts the lifting plate 109, which can cause the telescopic cylinder 108 to stop extending and retracting. At this time, air can be blown into the air guide 202 through the fan 201, so that the air enters the sealing cover 203 along the hose 205 and blows to the surface of the workpiece, so that the dust on the surface of the workpiece can be blown away and collected by the dust collecting unit, which is very convenient to use.

[0031] As an embodiment of the present invention, please refer to Figure 5 , Figure 6 and Figure 7The ash collecting unit includes a guide groove 501 opened on the upper surface of the placement plate 106, and a support plate 502 is arranged in the guide groove 501, and the outer wall of the support plate 502 is fixedly provided with side rods 503 distributed in an annular shape at equal distances, and the ends of the side rods 503 are connected to the inner wall of the guide groove 501, and the lower surface of the placement plate 106 is fixedly provided with a guide pipe 504 connected to the guide groove 501, and the end of the guide pipe 504 is fixedly provided with a rubber gasket 505, and a suction component is further arranged under the lifting plate 109 for sucking the air discharged from the guide pipe 504, and the suction component and the exhaust pipe 211 are connected through the ash filter component, so as to In order to filter out dust in the air discharged from the guide pipe 504, the workpiece can be lifted by the support plate 502. When the cover 203 blows off the dust on the surface of the workpiece, the airflow entrained with dust will enter the gap between the support plate 502 and the guide groove 501, and then be discharged through the guide pipe 504. The airflow discharged from the guide pipe 504 can be sucked by the suction component, and the dust in the airflow can be filtered out under the filtering action of the dust filter component, and the airflow with filtered dust is guided to the exhaust pipe 211 to be sucked by the fan 201 again, thereby effectively realizing the internal circulation of air, avoiding dust in the external air from entering the circulation and increasing the burden of the dust filter component, and achieving better use effect.

[0032] As an embodiment of the present invention, please refer to Figure 5 and Figure 6The suction assembly includes a suction pipe 302 fixedly arranged under the lifting plate 109, a mounting rod 301 is also fixedly arranged under the lifting plate 109, and the end of the mounting rod 301 is connected to the suction pipe 302, a movable pipe 303 is movably arranged in the suction pipe 302, and a ring plate 306 is fixedly arranged at the bottom end of the movable pipe 303, a fixing plate 304 is fixedly arranged on the side wall of the suction pipe 302, and a second vertical rod 305 is movably arranged on the outer wall of the fixing plate 304, a second baffle 307 is fixedly arranged on the top of the second vertical rod 305, and the bottom end of the second vertical rod 305 is connected to the ring plate 306, a second spring 308 is sleeved on the outer side of the second vertical rod 305, one end of the second spring 308 is connected to the second baffle 307, and the other end of the second spring 308 is connected to the fixing plate 304, and the distance between the ring plate 306 and the end of the guide pipe 504 is smaller than the distance between the light-shielding tube 111 and the placement plate 106 When the lifting plate 109 moves downward, the ring plate 306 will first contact the rubber gasket 505 at the end of the guide tube 504, and as the lifting plate 109 moves further downward, the movable tube 303 will move in the suction tube 302, and the second spring 308 on the outer side of the second vertical rod 305 will be stretched until the touch switch 210 contacts the lifting plate 109. At this time, the ring plate 306 and the guide tube 504 as well as the sealing cover 203 and the placement plate 106 are all in a fit state. When the fan 201 is started, air can be introduced into the sealing cover 203 to blow away the dust on the surface of the workpiece, and then the airflow holding the dust is introduced into the movable tube 303 through the guide tube 504, and enters the suction tube 302 along the movable tube 303, and then is introduced into the dust filter component through the suction tube 302, and the dust is removed by the dust filter component. The airflow after the dust is removed is sucked by the fan 201 along the exhaust pipe 211, and the use effect is better.

[0033] As an embodiment of the present invention, please refer to Figure 5 and Figure 6The ash filter assembly includes a U-shaped tube 401, one end of the U-shaped tube 401 is sleeved on the end of the suction tube 302, and the other end of the U-shaped tube 401 is sleeved on the end of the exhaust pipe 211, an annular groove is provided at one end of the U-shaped tube 401 close to the suction tube 302, and a collecting ring 407 is placed in the annular groove, a breathable bag 408 is fixedly provided on the lower surface of the collecting ring 407, and the collecting ring 407 is located between the annular groove and the end of the suction tube 302, a fixing rod 402 is also fixedly provided on the lower surface of the lifting plate 109, and a fixing plate 403 is fixedly provided on the end of the fixing rod 402, a movable rod 404 is movably provided through the outer wall of the fixing plate 403, a stopper 406 is fixedly provided on the top of the movable rod 404, and the bottom end of the movable rod 404 is connected to the U-shaped tube 401, and the outer side of the movable rod 404 is sleeved with a third Spring 405, one end of the third spring 405 is connected to the fixed plate 403, and the other end of the third spring 405 is connected to the U-shaped tube 401. The airflow discharged from the end of the suction tube 302 will enter the U-shaped tube 401 and pass through the collecting ring 407 in the U-shaped tube 401. The dust in the airflow can be retained in the air bag 408 through the air bag 408 below the collecting ring 407, and the airflow to remove the dust will be introduced into the exhaust pipe 211 along the U-shaped tube 401. When the air bag 408 needs to be cleaned, the U-shaped tube 401 can be directly pulled down to stretch the third spring 405 outside the movable rod 404 until the end of the U-shaped tube 401 is separated from the suction tube 302. At this time, the collecting ring 407 and the air bag 408 can be taken out of the U-shaped tube 401 for cleaning, which is very convenient to use.

[0034] As an embodiment of the present invention, please refer to Figure 3 The dimming mechanism includes an electric slide rail 601 which is equidistantly distributed in a ring shape in the light shielding tube 111, and an electric slider 602 is slidably arranged in the electric slide rail 601, and a fill light 603 is fixedly arranged on the outer wall of the electric slider 602. The position of the fill light 603 can be flexibly adjusted by sliding the electric slider 602 in the electric slide rail 601, and the fill light 603 can be arranged at different angles according to the different shapes of the workpiece, so as to enhance the three-dimensional sense and layering of the workpiece surface, highlight the depth information of defects such as scratches and cracks, and have a significant effect on the detection of workpieces with certain shape changes or curved surfaces, and the brightness, color and other parameters of different fill lights 603 can be adjusted independently, and the intelligent control system automatically optimizes the configuration according to different workpiece materials, shapes and detection requirements to obtain the best image acquisition effect.

[0035] As an embodiment of the present invention, please refer to Figure 1 and Figure 2The rotating mechanism includes a stepper motor 701 fixedly arranged on the lower surface of the base 101, and a gear 702 is arranged at the driving end of the stepper motor 701. A tooth groove 703 is opened on the outer wall of the rotating drum 103, and the gear 702 and the tooth groove 703 are meshed. When the turntable 104 needs to be rotated, the stepper motor 701 can drive the gear 702 to rotate. Since the gear 702 and the tooth groove 703 on the outside of the rotating drum 103 are meshed, the rotating drum 103 can be driven to rotate, and then the turntable 104 outside the rotating drum 103 can be rotated together, and the use effect is better.

[0036] When in use, the workpiece to be inspected can be placed on the placement plate 106 with the help of a robot or manually, and then the rotating mechanism can be used to drive the rotating drum 103 to rotate, so that the rotating disk 104 rotates together, so that the workpiece to be inspected can be aligned with the dust removal mechanism, and then the telescopic cylinder 108 drives the lifting plate 109 to move down, so that the dust on the surface of the workpiece can be blown off by the dust removal mechanism, and then the lifting plate 109 is driven to move up by the telescopic cylinder 108, and the rotation of the rotating disk 104 makes the workpiece after the dust is removed move to the bottom of the light-shielding tube 111, when the lifting plate 109 moves down again, the light-shielding tube 111 will cover the outside of the workpiece, and at this time, the image collector 112 can be used to collect all-round images of the workpiece surface, and the collected images can be transmitted to the intelligent The image processing and defect recognition system pre-processes the image and then analyzes the image using a defect recognition model built using a deep learning algorithm. It can then identify defects on the workpiece surface and annotate and quantify the defect information. During the detection process, the shielding effect of the light-shielding tube 111 can prevent external light sources from affecting image acquisition. At the same time, the dimming mechanism can provide uniform and soft front lighting to highlight the surface texture and subtle defects of the workpiece. It is particularly suitable for detecting flat workpieces or workpieces with small surface undulations, and has a better effect. When the lifting plate 109 moves downward, different workpieces can be cleaned and image captured separately, which can realize streamlined detection of workpieces, greatly improving detection efficiency and achieving a better effect.

[0037] It should be particularly noted that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A workpiece surface defect detection device, comprising a base, characterized in that: The upper surface of the base is fixedly provided with a vertical pole, and the top of the vertical pole is fixedly provided with a mounting plate, the outer side of the vertical pole is rotatably connected with a rotating drum, and the outer wall of the rotating drum is fixedly provided with a rotating disk, the upper surface of the rotating disk is provided with placement disks distributed in an annular manner with equal distances, and the lower surface of the placement disk is fixedly provided with a supporting rod, and the bottom end of the supporting rod is connected to the upper surface of the rotating disk, the outer wall of the mounting plate is fixedly provided with a telescopic cylinder through and through, and the telescopic end of the telescopic cylinder is fixedly provided with a lifting plate sleeved on the outer side of the vertical pole, the lower surface of the lifting plate is fixedly provided with a connecting rod, and the end of the connecting rod is fixedly provided with a shading tube, the lifting plate is fixedly provided with an image collector through and through, and the image collector is located in the shading tube, and also includes: A dust removal mechanism, which is arranged in the lifting plate and is used to remove dust on the surface of the workpiece before detection; A dimming mechanism, which is disposed in the light-shielding tube and is used to provide soft lighting to highlight the surface texture and subtle defects of the workpiece; The rotating mechanism is arranged below the base and is used to drive the rotating drum to rotate outside the vertical rod.

2. A workpiece surface defect detection device according to claim 1, characterized in that: The dust removal mechanism comprises a sealing cover arranged below the lifting plate and a fan fixedly arranged on the upper surface of the lifting plate, the air guide end of the fan is connected with an air guide duct, the outer wall of the sealing cover is fixedly provided with a side plate, the outer wall of the lifting plate is movably provided with a first vertical rod, the top end of the first vertical rod is fixedly provided with a first baffle, and the bottom end of the first vertical rod is connected to the upper surface of the side plate, the air guide duct and the sealing cover are connected by a hose, the bottom end of the sealing cover is fixedly provided with a rubber gasket, the top end of the sealing cover is fixedly provided with a touch switch, the exhaust end of the fan is connected with an exhaust duct, and a dust collecting unit is also provided above the turntable for collecting blown dust.

3. A workpiece surface defect detection device according to claim 2, characterized in that: The ash collecting unit includes a guide groove opened on the upper surface of the placement plate, and a support plate is arranged in the guide groove, the outer wall of the support plate is fixedly provided with side rods distributed in a ring at equal distances, and the ends of the side rods are connected to the inner wall of the guide groove, the lower surface of the placement plate is fixedly provided with a guide pipe connected to the guide groove, and a rubber gasket 2 is fixedly provided at the end of the guide pipe, and a suction assembly is also arranged under the lifting plate for sucking air discharged from the guide pipe, and the suction assembly and the exhaust pipe are connected through an ash filter assembly for filtering dust in the air discharged from the guide pipe.

4. A workpiece surface defect detection device according to claim 3, characterized in that: The suction assembly includes a suction pipe fixedly arranged under the lifting plate, and a mounting rod is also fixedly arranged under the lifting plate, and the end of the mounting rod is connected to the suction pipe, a movable tube is movably arranged in the suction pipe, and a ring plate is fixedly arranged at the bottom end of the movable tube, a fixing plate is fixedly arranged on the side wall of the suction pipe, and a second vertical rod movably arranged is passed through the outer wall of the fixing plate, a second baffle is fixedly arranged on the top of the second vertical rod, and the bottom end of the second vertical rod is connected to the ring plate, a second spring is sleeved on the outer side of the second vertical rod, one end of the second spring is connected to the second baffle, and the other end of the second spring is connected to the fixing plate, and the distance between the ring plate and the end of the guide pipe is smaller than the distance between the shading tube and the placement plate.

5. A workpiece surface defect detection device according to claim 4, characterized in that: The ash filter assembly includes a U-shaped tube, one end of the U-shaped tube is sleeved on the end of the suction pipe, and the other end of the U-shaped tube is sleeved on the end of the exhaust pipe, the U-shaped tube is provided with an annular groove at one end close to the suction pipe, and a collecting ring is placed in the annular groove, an air-permeable bag is fixedly provided on the lower surface of the collecting ring, and the collecting ring is located between the annular groove and the end of the suction pipe, a fixing rod is also fixedly provided on the lower surface of the lifting plate, and a fixing plate is fixedly provided on the end of the fixing rod, a movable rod is movably provided through the outer wall of the fixing plate, a stop block is fixedly provided on the top of the movable rod, and the bottom end of the movable rod is connected to the U-shaped tube, a third spring is sleeved on the outer side of the movable rod, one end of the third spring is connected to the fixing plate, and the other end of the third spring is connected to the U-shaped tube.

6. The workpiece surface defect detection device according to claim 1, characterized in that: The dimming mechanism comprises electric slide rails which are distributed in a ring shape at equal distances in the light-shielding tube, and an electric slider is slidably arranged in the electric slide rails, and a fill light is fixedly arranged on the outer wall of the electric slider.

7. The workpiece surface defect detection device according to claim 1, characterized in that: The rotating mechanism comprises a stepping motor fixedly arranged on the lower surface of the base, and a gear is arranged at the driving end of the stepping motor. A tooth groove is formed on the outer wall of the rotating cylinder, and the gear and the tooth groove are meshed.

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