Appearance defect visual inspection equipment

Abstract

The invention relates to appearance defect visual detection equipment which comprises a conveying assembly, a supporting frame is fixedly connected to the upper surface of the conveying assembly, a detection camera is fixedly connected to the inner top wall of the supporting frame, a mounting frame is fixedly connected to the upper surface of the conveying assembly, and a shell is arranged on the inner wall of the mounting frame; a cleaning brush assembly is arranged in the shell, and a dust removal part which is close to the cleaning brush assembly and carries static electricity is arranged in the shell. According to the dust removal device, the output end of the cleaning motor drives the driving roller to rotate, then the driving belt is driven to move under cooperation of the driven roller, then the bristles are driven to move, the dust removal part is arranged, dust in the bristles close to the dust removal part is adsorbed according to the electrostatic adsorption principle, and the dust in the bristles is removed through cooperation of the driving belt; during cleaning, part of the bristles contaminated with dust are moved to the upper portion so as to be attached to the dust removal part, and therefore the visual inspection equipment for the appearance defects has the effect of being high in cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of visual inspection equipment, and in particular to a visual inspection equipment for appearance defects. Background Art

[0002] Visual inspection is to use machines to replace human eyes to make measurements and judgments. Visual inspection refers to converting the captured target into image signals through machine vision products, transmitting them to a dedicated image processing system, and converting them into digital signals based on pixel distribution, brightness, color and other information; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the operation of the equipment on site based on the judgment results. It is mostly used to detect the appearance defects of objects.

[0003] During the visual inspection process, it is easy to misjudge the appearance of the object due to the dust on the object. After searching, the Chinese patent with the announcement number CN221318586U discloses a conveying mechanism for visual inspection of QR code quality. The mechanism can brush the surface of the QR code through the action of the bristles, so that the dust and impurities are brushed up, and then the dust cleaning trough is sucked through the suction pipe to absorb the dust and impurities, thereby improving the cleanliness of the surface of the QR code and facilitating the accuracy of the visual inspection of the QR code. The device can clean the dust to avoid misjudgment during the inspection of appearance defects. However, after the bristles of the device have been used for a long time, there will be some dust inside the bristles, and the dust will fall back on the object during the subsequent cleaning process, requiring multiple brushings, affecting the cleaning efficiency.

[0004] In order to solve the above problems, the present invention proposes a visual inspection device for appearance defects. Summary of the invention

[0005] (1) Technical issues to be resolved The purpose of the present invention is to overcome the deficiencies of the prior art, meet practical needs, and provide a visual inspection device for appearance defects to solve the above-mentioned technical problems.

[0006] (2) Technical solution In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is: A visual inspection device for appearance defects includes a conveying component, a support frame is fixedly connected to the upper surface of the conveying component, a detection camera is fixedly connected to the inner top wall of the support frame, a mounting frame is fixedly connected to the upper surface of the conveying component, an outer shell is provided on the inner wall of the mounting frame, a cleaning brush assembly is provided inside the outer shell, and a dust removal part carrying static electricity is provided inside the outer shell and is close to the cleaning brush assembly.

[0007] Furthermore, the conveying assembly includes a conveying frame, a lower surface of which is fixedly connected to a supporting leg, inner walls at both ends of the conveying frame respectively rotate an active conveying roller and a driven conveying roller, the surfaces of the active conveying roller and the driven conveying roller are provided with the same conveyor belt, the active conveying roller and the driven conveying roller are connected through a conveyor belt transmission, a conveying motor is fixedly connected to the front of the conveying frame, an output end of the conveying motor is fixedly connected to one end of the active conveying roller, and the supporting frame and the mounting frame are both fixedly connected to the upper surface of the conveying frame.

[0008] Furthermore, the cleaning brush assembly includes an active roller and a driven roller which are rotatably connected to the inner wall of the outer shell respectively, the surfaces of the active roller and the driven roller are provided with the same transmission belt, the active roller and the driven roller are connected through the transmission belt, the surface of the transmission belt is provided with bristles, the bottom of the outer shell is provided with a through hole for the bristles to pass through, a cleaning motor is fixedly connected to one side of the outer shell, the output end of the cleaning motor passes through the inner wall of the outer shell and is fixedly connected to the active roller, and the bristles are close to the dust removal part.

[0009] Furthermore, the ash removal part is made of rubber material, and the ash removal part fits the bristles so that static electricity is generated by friction between the two.

[0010] Furthermore, the ash removing part is an annular belt made of rubber, and the inner wall of the outer shell is rotatably connected with an active transmission roller and a driven transmission roller respectively. The ash removing part is sleeved on the surface of the active transmission roller and the driven transmission roller, and the active transmission roller and the driven transmission roller are connected through the ash removing part. A transmission part is provided on one side of the outer shell, and the ash removing part operates to transport and clean the dust.

[0011] Furthermore, the transmission member includes a driving gear and a driven gear respectively rotatably connected to one side of the shell, the driving gear is fixedly connected to the driving roller via a connecting shaft, the driven gear is fixedly connected to the driving transmission roller via a fixed shaft, and the driving gear and the driven gear are meshed.

[0012] Furthermore, a cover plate is fixedly connected to the inner wall of the shell, an electric push rod is fixedly connected to the upper surface of the mounting frame, and an output end of the electric push rod passes through the inner top wall of the mounting frame and is fixedly connected to the upper surface of the cover plate.

[0013] Furthermore, an ash discharge port is provided on the back of the shell, an ash guide plate is fixedly connected to the inner wall of the ash discharge port, one end of the ash guide plate is fitted with the ash removal part, and an avoidance port for the ash guide plate to pass through is provided on the back of the mounting frame.

[0014] Furthermore, a fan is fixedly connected to the upper surface of the support frame, an air inlet end of the fan is fixedly connected to an air inlet duct, an air outlet end of the fan is fixedly connected to an air hood, an inner wall of the support frame is fixedly connected to the air inlet duct, one end of the air inlet duct passes through the inner top wall of the support frame and is fixedly connected to the air hood, the air inlet duct is communicated with the air hood, one end of the air outlet duct is fixedly connected to the upper surface of the mounting frame, an extension pipe is slidably connected to the inner wall of the air outlet duct, one end of the extension pipe passes through the inner top wall of the mounting frame and is fixedly connected to the upper surface of the cover plate, the extension pipe is communicated with the inner cavity of the outer shell, and a diverter box is fixedly connected to the lower surface of the cover plate at a position corresponding to the extension pipe.

[0015] (3) Beneficial effects: A. In the present invention, the active roller is driven to rotate by the output end of the cleaning motor, and then the transmission belt is driven to move with the cooperation of the driven roller, and then the bristles are driven to move. The moving bristles clean the objects passing through the inside of the mounting frame, so that the top of the objects is kept clean so that the detection camera can detect them. By providing a dust removal part, the dust in the bristles close to the dust removal part is adsorbed by the principle of electrostatic adsorption, and the transmission belt is used to move the bristles that are contaminated with dust during cleaning to the top so that they are close to the dust removal part, thereby making the appearance defect visual inspection equipment have a high cleaning efficiency.

[0016] B. In the present invention, by making the ash removal part made of rubber material, the friction between the two can be utilized when the transmission belt drives the bristles to move so that the ash removal part carries static electricity. By making the ash removal part into a belt shape, the contact area between the ash removal part and the bristles is increased to increase the amount of static electricity generated and improve the adsorption effect. The active roller drives the active gear to rotate, which in turn drives the driven gear to rotate in the opposite direction, thereby driving the active transmission roller to move, and then driving the ash removal part to move with the cooperation of the driven transmission roller, so that the movement directions of the transmission belt and the ash removal part are opposite, thereby increasing the friction between the two, further improving the generation and retention of static electricity, and ensuring the ash removal effect of the ash removal part.

[0017] C. In the present invention, the ash removal part is moved so that the adsorbed dust can be moved upwards. As the ash removal part moves, the dust on the ash removal part is scraped off by the ash guide plate and discharged along the ash guide plate. By setting up a fan, the dust falling on the conveyor belt can be sucked in by the wind hood and discharged from the air outlet pipe into the space above the ash removal part in the shell, so as to keep the conveyor belt clean. At the same time, the fan works to ventilate the space above the ash removal part in the shell, so as to keep the environment of the space dry and improve the effect of maintaining static electricity. On the other hand, the air in the space above the ash removal part in the shell flows outward from the ash discharge port, so as to reduce the dust adsorbed on the ash guide plate and improve the dust discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the conveyor frame and the conveyor belt of the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the support frame of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the mounting frame of the present invention; Figure 5 It is a rear structural schematic diagram of the mounting frame of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure along line AA; Figure 7 It is a side structural schematic diagram of the mounting frame of the present invention; Figure 8 For the present invention Figure 7 The schematic diagram of the cross-sectional structure along the BB line; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point C in the middle.

[0019] The reference numerals are as follows: 1. Conveying assembly; 101. Conveying frame; 102. Supporting leg; 103. Active conveying roller; 104. Driven conveying roller; 105. Conveying belt; 106. Conveying motor; 2. Supporting frame; 3. Detection camera; 4. Mounting frame; 5. Housing; 6. Cleaning brush assembly; 601. Active roller; 602. Driven roller; 603. Drive belt; 604. Bristles; 605. Cleaning motor; 7. Ash removal unit; 8. Active transmission roller; 9. Driven transmission roller; 10. Active gear; 11. Driven gear; 12. Cover plate; 13. Electric push rod; 14. Ash discharge port; 15. Ash guide plate; 16. Avoidance port; 17. Fan; 18. Air inlet duct; 19. Air outlet duct; 20. Wind hood; 21. Extension pipe; 22. Diverter box. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-9 The present invention is further described with examples: like Figure 1-9 As shown, a visual inspection device for appearance defects includes a conveying component 1, the upper surface of the conveying component 1 is fixedly connected to a support frame 2, the inner top wall of the support frame 2 is fixedly connected to a detection camera 3, the upper surface of the conveying component 1 is fixedly connected to a mounting frame 4, the inner wall of the mounting frame 4 is provided with a shell 5, the interior of the shell 5 is provided with a cleaning brush assembly 6, and the interior of the shell 5 is provided with a dust removal part 7 carrying static electricity and close to the cleaning brush assembly 6.

[0021] Specifically, a conveying component 1 is provided to transport the object to be inspected so that it passes through the mounting frame 4 and the supporting frame 2 in sequence. When passing through the mounting frame 4, the cleaning brush component 6 cleans the object to be inspected to reduce the influence of dust on the inspection result. When passing through the supporting frame 2, the inspection camera 3 inspects the appearance defects of the object to be inspected. By providing a dust removal portion 7, the dust in the bristles 604 close to the dust removal portion 7 is adsorbed by the principle of electrostatic adsorption, wherein close means that the distance between the dust removal portion 7 and the cleaning brush component 6 is very close, or even touches each other.

[0022] The conveying assembly 1 includes a conveying frame 101, and a supporting leg 102 is fixedly connected to the lower surface of the conveying frame 101. The inner walls at both ends of the conveying frame 101 respectively rotate the active conveying roller 103 and the driven conveying roller 104. The surfaces of the active conveying roller 103 and the driven conveying roller 104 are provided with the same conveyor belt 105. The active conveying roller 103 and the driven conveying roller 104 are connected by the conveyor belt 105. The front of the conveying frame 101 is fixedly connected to a conveying motor 106, and the output end of the conveying motor 106 is fixedly connected to one end of the active conveying roller 103. The supporting frame 2 and the mounting frame 4 are both fixedly connected to the upper surface of the conveying frame 101. The active conveying roller 103 is driven to rotate by the output end of the conveying motor 106, and then the conveyor belt 105 is driven to move with the cooperation of the driven conveying roller 104, and the moving conveyor belt 105 is used to transmit the object to be detected.

[0023] The cleaning brush assembly 6 includes an active roller 601 and a driven roller 602 which are respectively rotatably connected to the inner wall of the shell 5. The surfaces of the active roller 601 and the driven roller 602 are provided with the same transmission belt 603. The active roller 601 and the driven roller 602 are transmission-connected through the transmission belt 603. The surface of the transmission belt 603 is provided with bristles 604. A through hole is provided at the bottom of the shell 5 for the bristles 604 to pass through. A cleaning motor 605 is fixedly connected to one side of the shell 5. The output end of the cleaning motor 605 passes through the inner wall of the shell 5 and is fixedly connected to the active roller 601. The bristles 604 are close to the dust removal part 7. The output end drives the active roller 601 to rotate, and then drives the transmission belt 603 to move with the cooperation of the driven roller 602, and then drives the bristles 604 to move. The moving bristles 604 clean the objects passing through the inside of the mounting frame 4, so that the top of the objects is kept clean so that the detection camera 3 can detect them. By providing a dust removal part 7, the dust in the bristles 604 close to the dust removal part 7 is adsorbed by the principle of electrostatic adsorption. With the cooperation of the transmission belt 603, the bristles 604 that are contaminated with dust during cleaning are moved upwards so as to be close to the dust removal part 7, thereby making the appearance defect visual inspection equipment have a high cleaning efficiency.

[0024] The ash removal part 7 is made of rubber material, and the ash removal part 7 fits with the bristles 604 so that static electricity is generated by friction between the two. By setting the ash removal part 7 to be made of rubber material, the friction between the two when the transmission belt 603 drives the bristles 604 to move can make the ash removal part 7 carry static electricity. Among them, the fit means that the ash removal part 7 and the cleaning brush assembly 6 can contact each other. When the ash removal part 7 and the bristles 604 rub against each other, their surface atoms will contact and act on each other. In this process, due to the different binding abilities of the ash removal part 7 and the bristles 604 to electrons, the binding ability of the ash removal part 7 to electrons is relatively strong, and the binding ability of the bristles 604 to electrons is relatively weak. Therefore, during the friction process, electrons will be transferred from the bristles 604 with weaker binding ability to the ash removal part 7 with stronger binding ability. As a result, the ash removal part 7 gains electrons and becomes negatively charged, and the bristles 604 lose electrons and become positively charged, thereby generating static electricity.

[0025] The ash removing part 7 is an annular belt made of rubber, and the inner wall of the outer shell 5 is rotatably connected with an active transmission roller 8 and a driven transmission roller 9 respectively. The ash removing part 7 is sleeved on the surface of the active transmission roller 8 and the driven transmission roller 9, and the active transmission roller 8 and the driven transmission roller 9 are connected through the ash removing part 7. A transmission part is provided on one side of the outer shell 5. The ash removing part 7 is operated to transport and clean the dust. By setting the ash removing part 7 into a belt shape, the contact area between the ash removing part 7 and the bristles 604 is increased to increase the amount of static electricity generated and improve the adsorption effect. When the ash removing part 7 rubs with the bristles 604, a larger contact area means that more atoms can participate in the charge transfer process. The ash removing part 7 is set as an annular belt to increase the contact area with the bristles 604. During the friction process, more surface atoms will interact with each other to ensure its dust adsorption capacity.

[0026] The transmission member includes a driving gear 10 and a driven gear 11 which are respectively rotatably connected to one side of the shell 5. The driving gear 10 is fixedly connected to the driving roller 601 through a connecting shaft, and the driven gear 11 is fixedly connected to the driving transmission roller 8 through a fixed shaft. The driving gear 10 and the driven gear 11 are meshed, and the driving roller 601 drives the driving gear 10 to rotate, thereby driving the driven gear 11 to rotate in the opposite direction, thereby driving the driving transmission roller 8 to move, and then driving the ash removal part 7 to move with the cooperation of the driven transmission roller 9, so that the movement direction of the transmission belt 603 is opposite to that of the ash removal part 7, thereby increasing the friction between the two, further improving the generation and maintenance effect of static electricity, and ensuring the ash removal effect of the ash removal part 7.

[0027] The inner wall of the outer shell 5 is fixedly connected with a cover plate 12, and the upper surface of the mounting frame 4 is fixedly connected with an electric push rod 13. The output end of the electric push rod 13 passes through the inner top wall of the mounting frame 4 and is fixedly connected to the upper surface of the cover plate 12. The cover plate 12 is driven up and down by the output end of the electric push rod 13, thereby driving the outer shell 5 to move up and down, and the height of the bristles 604 can be adjusted as needed to adapt to the height of the object to be detected.

[0028] A dust discharge port 14 is provided on the back of the shell 5, and an ash guide plate 15 is fixedly connected to the inner wall of the ash discharge port 14. One end of the ash guide plate 15 is in contact with the ash removal part 7. A avoidance port 16 for the passage of the ash guide plate 15 is provided on the back of the mounting frame 4. The ash removal part 7 moves the adsorbed dust to the top through the movement of the ash removal part 7. As the ash removal part 7 moves, the dust on the ash removal part 7 is scraped off by the ash guide plate 15 and discharged along the ash guide plate 15.

[0029] The upper surface of the support frame 2 is fixedly connected with a fan 17, the air inlet end of the fan 17 is fixedly connected with an air inlet pipe 18, the air outlet end of the fan 17 is fixedly connected with an air outlet pipe 19, the inner wall of the support frame 2 is fixedly connected with a wind cover 20, one end of the air inlet pipe 18 passes through the inner top wall of the support frame 2 and is fixedly connected to the wind cover 20, the air inlet pipe 18 is communicated with the wind cover 20, one end of the air outlet pipe 19 is fixedly connected to the upper surface of the mounting frame 4, the inner wall of the air outlet pipe 19 is slidably connected with an extension pipe 21, one end of the extension pipe 21 passes through the inner top wall of the mounting frame 4 and is fixedly connected to the upper surface of the cover plate 12, the extension pipe 21 is communicated with the inner cavity of the shell 5, and the lower surface of the cover plate 12 A diverter box 22 is fixedly connected to the position on the surface corresponding to the extension tube 21. By setting the fan 17, the wind hood 20 can be used to suck in the dust falling on the conveyor belt 105 and discharge it from the exhaust pipe into the space above the ash removal section 7 in the outer shell 5 to keep the conveyor belt 105 clean. At the same time, the fan 17 works to ventilate the space above the ash removal section 7 in the outer shell 5 to keep the environment of the space dry and improve the static electricity retention effect. On the other hand, the air in the space above the ash removal section 7 in the outer shell 5 flows outward from the ash discharge port 14 to reduce the dust adsorbed on the ash guide plate 15 and improve the dust discharge effect. The extension tube 21 is set to adapt to the up and down movement of the outer shell 5.

[0030] Working principle: When the appearance defect visual inspection device is used, the user first starts the electric push rod 13. The output end of the electric push rod 13 drives the cover plate 12 to move up and down, and the cover plate 12 drives the shell 5 to move up and down. The height of the brush 604 is adjusted according to the height of the object to be inspected. Then the conveying motor 106, the cleaning motor 605 and the fan 17 are started respectively. Then the object to be inspected is placed on the transmission belt 603 with the surface to be inspected facing upward. The output end of the conveying motor 106 drives the active conveying roller 103 to rotate. The active conveying roller 103 drives the conveyor belt 105 to move with the cooperation of the driven conveying roller 104. The moving conveyor belt 105 transmits the object to be inspected so that it passes through the mounting frame 4 and the support frame 2 in sequence. When passing through the mounting frame 4, the cleaning brush assembly 6 cleans the object to be inspected to reduce the influence of dust on the inspection results. When passing through the support frame 2, the inspection camera 3 inspects the appearance defects of the object to be inspected.

[0031] The output end of the cleaning motor 605 drives the active roller 601 to rotate, and the active roller 601 drives the transmission belt 603 to move with the cooperation of the driven roller 602, and the transmission belt 603 drives the bristles 604 to move. The moving bristles 604 clean the object to be detected passing through the mounting bracket 4, so that the top of the object remains clean so that the detection camera 3 can detect it. On the other hand, when the transmission belt 603 drives the bristles 604 to move, friction occurs between the bristles 604 and the dust removal part 7, so that the dust removal part 7 carries static electricity. The dust removal part 7 uses the principle of electrostatic adsorption to adsorb dust in the bristles 604 close to the dust removal part 7. At the same time, the movement of the transmission belt 603 moves the bristles 604 that are contaminated with dust during cleaning to the top so that they can fit with the dust removal part 7 for dust removal.

[0032] The active roller 601 drives the active gear 10 to rotate, and the active gear 10 drives the driven gear 11 to rotate in the opposite direction, and the driven gear 11 drives the active transmission roller 8 to move. The active transmission roller 8 drives the ash removal part 7 to move with the cooperation of the driven transmission roller 9, so that the transmission belt 603 and the ash removal part 7 move in opposite directions, thereby increasing the friction between the two, improving the generation and retention effect of static electricity, and ensuring the ash removal effect of the ash removal part 7. The fan 17 works by using the wind cover 20 to suck in the dust falling on the conveyor belt 105 and discharge it from the air outlet pipe into the space above the ash removal part 7 in the shell 5 to keep the conveyor belt 105 clean. At the same time, the fan 17 works to ventilate the space above the ash removal part 7 in the shell 5, so that the space environment remains dry and the static electricity retention effect is improved. On the other hand, the air in the space above the ash removal part 7 in the shell 5 flows outward from the ash discharge port 14, reducing the dust adsorbed on the ash guide plate 15 and improving the dust discharge effect, so that the appearance defect visual inspection equipment has a high cleaning efficiency.

[0033] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A visual inspection device for appearance defects, comprising a transmission component (1), the upper surface of the transmission component (1) being fixedly connected to a support frame (2), the inner top wall of the support frame (2) being fixedly connected to a detection camera (3), characterized in that: The upper surface of the conveying assembly (1) is fixedly connected to a mounting frame (4), the inner wall of the mounting frame (4) is provided with a shell (5), a cleaning brush assembly (6) is provided inside the shell (5), and a dust removal portion (7) carrying static electricity and close to the cleaning brush assembly (6) is provided inside the shell (5).

2. The appearance defect visual inspection device according to claim 1, characterized in that: The conveying assembly (1) comprises a conveying frame (101), the lower surface of the conveying frame (101) is fixedly connected to a supporting leg (102), the inner walls at both ends of the conveying frame (101) respectively rotate an active conveying roller (103) and a driven conveying roller (104), the surfaces of the active conveying roller (103) and the driven conveying roller (104) are provided with a same conveying belt (105), the active conveying roller (103) and the driven conveying roller (104) are connected by transmission via the conveying belt (105), the front surface of the conveying frame (101) is fixedly connected to a conveying motor (106), the output end of the conveying motor (106) is fixedly connected to one end of the active conveying roller (103), and the supporting frame (2) and the mounting frame (4) are both fixedly connected to the upper surface of the conveying frame (101).

3. The appearance defect visual inspection device according to claim 1, characterized in that: The cleaning brush assembly (6) comprises an active roller (601) and a driven roller (602) which are respectively rotatably connected to the inner wall of the housing (5); the surfaces of the active roller (601) and the driven roller (602) are provided with a same transmission belt (603); the active roller (601) and the driven roller (602) are connected to each other by the transmission belt (603); the surface of the transmission belt (603) is provided with bristles (604); a through hole is provided at the bottom of the housing (5) for the bristles (604) to pass through; a cleaning motor (605) is fixedly connected to one side of the housing (5); the output end of the cleaning motor (605) passes through the inner wall of the housing (5) and is fixedly connected to the active roller (601); and the bristles (604) are close to the dust removal part (7).

4. The appearance defect visual inspection device according to claim 3, characterized in that: The ash removal portion (7) is made of a rubber material, and the ash removal portion (7) fits the bristles (604) so ​​that static electricity is generated by friction between the two.

5. The appearance defect visual inspection device according to claim 4, characterized in that: The ash removal part (7) is an annular belt made of rubber. The inner wall of the shell (5) is rotatably connected to a driving transmission roller (8) and a driven transmission roller (9). The ash removal part (7) is sleeved on the surface of the driving transmission roller (8) and the driven transmission roller (9). The driving transmission roller (8) and the driven transmission roller (9) are connected in transmission through the ash removal part (7). A transmission member is provided on one side of the shell (5). The ash removal part (7) operates to transport and clean the dust.

6. The appearance defect visual inspection device according to claim 5, characterized in that: The transmission member comprises a driving gear (10) and a driven gear (11) which are respectively rotatably connected to one side of the housing (5); the driving gear (10) is fixedly connected to the driving roller (601) via a connecting shaft; the driven gear (11) is fixedly connected to the driving transmission roller (8) via a fixed shaft; and the driving gear (10) and the driven gear (11) are meshed.

7. The appearance defect visual inspection device according to claim 1, characterized in that: The inner wall of the housing (5) is fixedly connected to a cover plate (12), the upper surface of the mounting frame (4) is fixedly connected to an electric push rod (13), and the output end of the electric push rod (13) passes through the inner top wall of the mounting frame (4) and is fixedly connected to the upper surface of the cover plate (12).

8. The appearance defect visual inspection device according to claim 1, characterized in that: The back of the housing (5) is provided with an ash discharge port (14), the inner wall of the ash discharge port (14) is fixedly connected with an ash guide plate (15), one end of the ash guide plate (15) is in contact with the ash removal portion (7), and the back of the mounting frame (4) is provided with an avoidance opening (16) for the ash guide plate (15) to pass through.

9. The appearance defect visual inspection device according to claim 7, characterized in that: The upper surface of the support frame (2) is fixedly connected to a fan (17); an air inlet end of the fan (17) is fixedly connected to an air inlet pipe (18); an air outlet end of the fan (17) is fixedly connected to an air hood (20); an inner wall of the support frame (2) is fixedly connected to the fan cover (20); one end of the air inlet pipe (18) passes through the inner top wall of the support frame (2) and is fixedly connected to the fan cover (20); the air inlet pipe (18) is connected to the fan cover (20); one end of the air outlet pipe (19) is fixedly connected to the upper surface of the mounting frame (4); an extension pipe (21) is slidably connected to the inner wall of the air outlet pipe (19); one end of the extension pipe (21) passes through the inner top wall of the mounting frame (4) and is fixedly connected to the upper surface of the cover plate (12); the extension pipe (21) is connected to the inner cavity of the outer shell (5); and a diversion box (22) is fixedly connected to the lower surface of the cover plate (12) at a position corresponding to the extension pipe (21).

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