Equipment for detecting appearance defects of hexahedron

By designing hexahedral appearance defect detection equipment, all-round detection and automated sorting of the six sides of the product are achieved, solving the problems of traditional equipment being unable to conduct all-round detection and low efficiency of manual sorting, and improving production efficiency.

CN223382064UActive Publication Date: 2025-09-26HUIZHOU MICRON TECH CO LTD
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Patent Information

Application Number
CN202422339976.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2025-09-26
Estimated Expiration
2034-09-24

AI Technical Summary

Technical Problem

Traditional appearance inspection equipment cannot perform all-round inspections on all six sides of a product, and manual sorting is required after the inspection is completed. This is inefficient and prone to problems such as missed sorting and incorrect sorting.

Method used

A hexahedron appearance defect detection equipment was designed, which includes a six-sided detection device and a material separation device. It can perform all-round inspection on the six sides of the product and automatically sort good and defective products through the unloading robot and the material separation robot.

Benefits of technology

It achieves all-round inspection of the six sides of the product, improves inspection efficiency, and reduces the occurrence of missed sorting and wrong sorting through automated sorting, thereby improving overall production efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses hexahedron appearance defect detection equipment which comprises a six-surface detection device and a material distribution device, the six-surface detection device comprises a top surface detection module arranged above a detection conveying belt, and front and back surface detection modules arranged on two sides of the detection conveying belt, the bottom surface detection module, the left and right surface detection module and the discharging manipulator are arranged at one end of the detection conveying belt, products are transferred to the bottom surface detection module and the left and right surface detection module through the discharging manipulator, and the material distributing device comprises a material distributing conveying belt and a material distributing manipulator located above the material distributing conveying belt; the material distributing mechanical arm is used for sorting the products on the material distributing conveying belt to the good product area and the defective product area. Therefore, the six surfaces of the product can be comprehensively detected through the six-surface detection device, so that the detection efficiency is improved, meanwhile, manual work is replaced by the material distribution device to carry out automatic sorting operation, the detection and sorting efficiency is improved, and the problems of missing sorting and wrong sorting can be avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of appearance detection equipment, in particular to a hexahedron appearance defect detection device. Background Art

[0002] After product production is complete, imaging inspection is required to detect appearance defects. For example, after the production of mobile phone camera modules, they need to be inspected for appearance defects to ensure the shipping quality of mobile phone camera modules. However, traditional appearance inspection equipment can usually only inspect a few sides of the product and cannot fully inspect all six sides of the product. In addition, after the inspection is completed, manual sorting and unloading are still required. However, manual sorting is inefficient and can cause problems such as missed sorting and incorrect sorting. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a hexahedron appearance defect detection equipment that can perform all-round inspection on the six sides of a product and automatically sort defective products from good products after the inspection is completed, thereby improving production efficiency.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A hexahedron appearance defect detection device, comprising: a six-sided detection device and a material dividing device, the six-sided detection device comprising a detection conveyor belt, a top surface detection module, a front and back surface detection module, a left and right surface detection module, a bottom surface detection module and a material unloading robot, the shooting end of the top surface detection module is located above the detection conveyor belt, the shooting ends of the front and back surface detection modules are located on both sides of the detection conveyor belt, the detection conveyor belt is used to transfer the product to the top surface detection module and the front and back surface detection modules, the material unloading robot is located at the end of the detection conveyor belt, the shooting ends of the left and right surface detection modules and the shooting ends of the bottom surface detection module are located at the ends of the detection conveyor belt. The ends are respectively located on one side of the unloading robot, and the unloading robot is used to transfer the products on the detection conveyor belt to the left and right side detection modules and the bottom surface detection module, and the unloading robot is also used to perform unloading operations on the products that have completed the inspection; the dividing device includes a dividing robot and a dividing conveyor belt, and the dividing conveyor belt is located below the dividing robot, and a good product area and a defective product area are provided below the dividing robot. When the unloading robot transfers the product to the dividing conveyor belt, the dividing robot is used to sort the good products and defective products on the dividing conveyor belt to the good product area and the defective product area.

[0006] In one embodiment, it also includes a loading device, which includes a loading tray conveyor belt, a loading tray and a loading robot. The loading tray conveyor belt is provided with a loading grabbing position. When the loading tray conveyor belt transfers the loading tray to the loading grabbing position, the loading robot is used to transfer the product on the loading tray to the detection conveyor belt.

[0007] In one embodiment, the loading robot includes a loading linear displacement module and a lifting adsorption frame. The loading linear displacement module is located above the material tray conveyor belt, and the lifting adsorption frame is connected to the loading linear displacement module. When the adsorption end of the lifting adsorption frame adsorbs and fixes the product, the loading linear displacement module is used to drive the lifting adsorption frame to perform reciprocating displacement between the loading grabbing position and the detection conveyor belt.

[0008] In one embodiment, an in-place identification member is provided above the tray conveyor belt, and the in-place identification member is located on the loading and grabbing position, and the in-place identification member is used to identify the in-place of the tray entering the loading and grabbing position.

[0009] In one embodiment, the material dividing device also includes a good product conveyor belt, a good product loading tray and a good product storage bin, the good product conveyor belt is arranged on the good product area, the good product loading tray is arranged on the good product conveyor belt, and the good product storage bin is located at one end of the good product conveyor belt, and the good product conveyor belt is used to transfer the good product loading tray to the good product storage bin.

[0010] In one embodiment, the material dividing device also includes a defective product conveyor belt, a defective product loading tray and a defective product storage bin, the defective product conveyor belt is arranged on the defective product area, the defective product loading tray is arranged on the defective product conveyor belt, and the defective product storage bin is located on one end of the defective product conveyor belt, and the defective product conveyor belt is used to transfer the defective product loading tray to the defective product storage bin.

[0011] In one embodiment, the material dividing device further includes an empty tray grabbing robot, which is located above the good product area and the defective product area, and is used to transfer empty trays to the good product area and the defective product area.

[0012] In one embodiment, the material dividing device further includes a disc cover grabbing robot, which is located above the good product conveyor belt and the defective product conveyor belt, and is used to transfer the disc cover to the defective product loading tray and the good product loading tray.

[0013] In one embodiment, the top surface detection module includes a base, a lifting and adjusting frame, a top surface camera and a light source. The base is arranged on one side of the detection conveyor belt, the lifting and adjusting frame is arranged on the base, the top surface camera and the light source are respectively arranged on the lifting and adjusting frame, and the light source is located between the top surface camera and the detection conveyor belt. The lifting and adjusting frame is used to drive the top surface camera and the light source to perform lifting operations in the direction of the detection conveyor belt.

[0014] In one embodiment, four top surface cameras are provided, each of the top surface cameras is respectively provided on the base, and a shooting end of each of the top surface cameras is located above the detection conveyor belt.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] The hexahedral appearance defect detection equipment of the present invention is equipped with a six-sided detection device and a material dividing device, so that the product to be inspected can be transported to the top surface detection module and the front and back surface detection module through the detection conveyor belt to perform appearance inspection operations on the top and front and back surfaces, and then the product is transferred to the left and right surface detection module and the bottom surface detection module through the unloading robot to perform left and right surface and bottom surface inspection operations, thereby realizing all-round appearance defect inspection on the six surfaces of the product, thereby improving the inspection efficiency of the product appearance; in addition, the product that has completed the appearance inspection can be transferred to the dividing conveyor belt by the unloading robot and unloading operations can be performed, and at the same time, the good and defective products on the dividing conveyor belt can be automatically sorted by the dividing robot, thereby replacing manual automatic sorting operations, thereby improving the efficiency of detection and sorting, and avoiding the problems of missed sorting and wrong sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0018] Figure 1 Schematic diagram of the structure of a hexahedron appearance defect detection device in one embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the unloading device and the six-sided detection device of the hexahedron appearance defect detection equipment;

[0020] Figure 3 for Figure 1 A schematic structural diagram of a material dividing device of a hexahedron appearance defect detection device;

[0021] Figure 4 for Figure 2Schematic diagram of the structure of the top surface detection module of the six-sided detection device. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0023] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a hexahedron appearance defect detection device 10 includes: a six-sided detection device 100 and a material dividing device 200, the six-sided detection device 100 includes a detection conveyor belt 110, a top surface detection module 120, a front and back detection module 130, a left and right surface detection module 140, a bottom surface detection module 150 and a material unloading robot 160, the shooting end of the top surface detection module 120 is located above the detection conveyor belt 110, the shooting ends of the front and back detection modules 130 are located on both sides of the detection conveyor belt 110, the detection conveyor belt 110 is used to transfer the product to the top surface detection module 120 and the front and back detection modules 130, the material unloading robot 160 is located at the end of the detection conveyor belt 110, the shooting ends of the left and right surface detection modules 140 and The shooting end of the bottom surface detection module 150 is located on one side of the unloading robot 160. The unloading robot 160 is used to transfer the products on the detection conveyor belt 110 to the left and right surface detection modules 140 and the bottom surface detection module 150, and the unloading robot 160 is also used to perform unloading operations on the products that have completed the inspection; the sorting device 200 includes a sorting robot 210 and a sorting conveyor belt 220. The sorting conveyor belt 220 is located below the sorting robot 210, and a good product area and a defective product area are provided below the sorting robot 210. When the unloading robot 210 transfers the product to the sorting conveyor belt 220, the sorting robot 210 is used to sort the good products and defective products on the sorting conveyor belt 220 into the good product area and the defective product area.

[0024] It should be noted that the front and rear detection modules 130 include a front detection module and a rear detection module, which are respectively arranged on both sides of the detection conveyor belt 110, and the front detection module and the rear detection module have the same structure, and there are two front detection modules and two rear detection modules respectively. In this embodiment, the front detection module includes a support seat, a longitudinal displacement frame, a camera and a light source. The longitudinal displacement frame is arranged on the support seat, and the camera is connected to the longitudinal displacement frame. The longitudinal displacement frame is used to drive the camera to perform longitudinal displacement in the direction of the product so that the camera is in the best shooting position. The light source is arranged between the camera and the detection conveyor belt 110. For example, the light source can be used Ring-shaped LED light source; further, the left and right surface detection modules 140 include a left detection module and a right detection module, and two left detection modules and two right detection modules are respectively provided. In one embodiment, the structure of the left detection module and the right detection module is the same as that of the front detection module, and the bottom surface detection module 150 is located between the left detection module and the right detection module, and the bottom surface detection module 150 also includes a fixed seat, a lifting frame, a bottom camera and a bottom light source. The lifting frame is arranged on the fixed seat, and the bottom camera and the bottom light source are arranged on the lifting frame. The bottom camera and the bottom light source are driven by the lifting frame to perform lifting and lowering movements, so that the bottom camera is in the best shooting position. Specifically, the products to be inspected by the inspection conveyor belt 110 are moved to the top surface inspection module 120 and the front and back surface inspection module 130 respectively, so that the top surface of the product is photographed and inspected by the top surface inspection module 120, and the front and back surfaces of the product are photographed and inspected by the front and back surface inspection module 130 respectively, and then the products are transferred to the left and right surface inspection modules 140 and the bottom surface inspection module 150 by the unloading robot 160, so that the left and right surfaces of the product are photographed and inspected by the left and right surface inspection modules 140, and the bottom surface of the product is photographed and inspected by the bottom surface inspection module 150. In this way, all-round inspection of the six surfaces of the product can be achieved. Thereby improving the inspection efficiency, at the same time, the products that have completed the appearance inspection can also be transferred to the material separation conveyor belt 220 for unloading operations through the unloading robot 160, and each inspection module on the six-sided inspection device 100 transmits the inspection information of the product to the control terminal, and the control terminal analyzes and calculates, and transmits the analysis results to the material separation robot 210. The material separation robot 210 obtains the signal and sorts the good and defective products on the material separation conveyor belt 220, thereby realizing automated material separation operations. Compared with traditional manual sorting methods, it can further improve the inspection efficiency and sorting efficiency, and at the same time avoid the problems of wrong sorting and missed sorting.

[0025] Specifically, in one embodiment, the hexahedral appearance defect detection equipment 10 also includes a loading device 300, the loading device 300 includes a tray conveyor belt 310, a loading tray 320 and a loading robot 330, and a loading grabbing position is provided on the tray conveyor belt 310. When the tray conveyor belt 310 transfers the loading tray 320 to the loading grabbing position, the loading robot 330 is used to transfer the product on the loading tray 320 to the detection conveyor belt 110. Before the product enters the detection conveyor belt 110, the loading tray 320 with the product is placed in the tray storage bin at one end of the tray conveyor belt 310 manually or by a corresponding robot. The tray conveyor belt 310 delivers one loading tray 320 to the loading grabbing position in turn. In this embodiment, an in-place identification member 340 is provided above the tray conveyor belt 310, and the in-place identification member 340 is located on the loading grabbing position. The in-place identification member 340 is used to perform in-place identification of the loading tray 320 that enters the loading grabbing position. For example, the in-place identification member 340 can be a camera, which uses the camera to capture and identify whether the loading tray 320 has arrived at the loading grabbing position, and transmits the identification information to the control terminal. The control terminal controls the loading robot 330 to adsorb and grab the product on the loading tray 320, and transfer the product through the loading robot 330. To the detection conveyor belt 110, in this embodiment, the loading robot 330 includes a loading linear displacement module 331 and a lifting adsorption frame 332. The loading linear displacement module 331 is located above the material tray conveyor belt 310, and the lifting adsorption frame 332 is connected to the loading linear displacement module 331. When the adsorption end of the lifting adsorption frame 332 adsorbs and fixes a product, the loading linear displacement module 331 is used to drive the lifting adsorption frame 332 to perform reciprocating displacement between the loading grabbing position and the detection conveyor belt 110. Specifically, four adsorption ends are provided on the lifting adsorption frame 332, and the lifting adsorption frame 332 drives each adsorption end to perform a lifting movement toward the direction of the product. After each adsorption end adsorbs and fixes a product, the lifting adsorption frame 332 rises and moves to the detection conveyor belt 110 through the loading linear displacement module 331, thereby completing the loading operation.

[0026] Further, see Figure 4As shown, in one embodiment, the top surface detection module 120 includes a base 121, a lifting and adjusting frame 122, a top surface camera 123 and a light source 124. The base 121 is arranged on one side of the detection conveyor belt 110, the lifting and adjusting frame 122 is arranged on the base 121, the top surface camera 123 and the light source 124 are respectively arranged on the lifting and adjusting frame 122, and the light source 124 is located between the top surface camera 123 and the detection conveyor belt 110, the lifting and adjusting frame 122 is used to drive the top surface camera 123 and the light source 124 to perform lifting operations in the direction of the detection conveyor belt 110; the top surface camera 123 is driven to move in the direction of the detection conveyor belt 110 by the lifting and adjusting frame 122, for example, the lifting and adjusting frame 122 can be driven by a motor, so that the top surface camera 123 is at the best shooting angle, and at the same time, the light source 124 provides light, so as to ensure the clarity of the shooting and detection, for example, the light source 124 can be an LED light source. In this embodiment, four top surface cameras 123 are provided, each of which is provided on the base 121, and the shooting end of each top surface camera 123 is located above the detection conveyor belt 110. In this way, four products can be photographed and inspected at the same time, thereby further improving the detection efficiency.

[0027] In one embodiment, please refer to Figure 1 and Figure 3As shown, the material distribution device 200 further includes a good product conveyor belt 230, a good product loading tray 240, and a good product storage bin 250. The good product conveyor belt 230 is disposed on the good product area, the good product loading tray 240 is disposed on the good product conveyor belt 230, and the good product storage bin 250 is located at one end of the good product conveyor belt 230. The good product conveyor belt 230 is used to transfer the good product loading tray 240 to the good product storage bin 250. Similarly, in this embodiment, the material distribution device 200 further includes a defective product conveyor belt 260, a defective product loading tray 270, and a defective product storage bin 280. The defective product conveyor belt 260 is disposed on the defective product area, the defective product loading tray 270 is disposed on the defective product conveyor belt 260, and the defective product storage bin 280 is located at one end of the defective product conveyor belt 260. The defective product conveyor belt 260 is used to transfer the defective product loading tray 270 to the defective product storage bin 280. Furthermore, a carrier is provided on the material distribution conveyor belt 220, and the unloading robot 160 moves the product that has completed the inspection and places it on the carrier of the material distribution conveyor belt 220, and the material distribution conveyor belt 220 drives the carrier to move to the bottom of the material distribution robot 210, and the material distribution robot 210 obtains the inspection information of the product, thereby transferring the good product on the carrier to the good product loading tray 240 on the good product conveyor belt 230. In addition, an identification unit is provided above the good product loading tray 240. Machine, when the recognition camera recognizes that the good product loading tray 240 is full of products, the good product conveyor belt 230 transfers the good product loading tray 240 to the good product storage bin 250. Similarly, the defective products on the carrier are transferred to the defective product loading tray 270 of the defective product conveyor belt 260 by the material dividing robot 210. When the defective product loading tray 270 is full of defective products, the defective product conveyor belt 260 moves the defective product loading tray 270 full of defective products to the defective product storage bin 280.

[0028] Furthermore, the material sorting device 200 also includes an empty tray grabbing robot 290a, which is located above the good product area and the defective product area. The empty tray grabbing robot 290a is used to transfer empty trays to the good product area and the defective product area. An empty tray bin 290c is provided on one side of the empty tray grabbing robot 290a. Empty trays can be stacked in the empty tray bin 290c manually or by a robot. The empty tray grabbing robot 290a then transfers the empty trays to the good product conveyor belt 230 and the defective product conveyor belt 260, respectively. This improves the automation level of the entire equipment, while saving time for sorting and changing empty trays, and improving the detection and sorting efficiency of the entire equipment.

[0029] Furthermore, the material dividing device 200 also includes a disc cover grabbing robot 290b, which is located above the good product conveyor belt 230 and the defective product conveyor belt 260. The disc cover grabbing robot 290b is used to transfer the disc cover to the defective product loading tray 240 and the good product loading tray 270. For example, the disc cover grabbing robot 290b can be a three-axis robot, and a disc cover storage bin 290d is provided on one side of the disc cover grabbing robot 290b, and the disc covers can be pre-stacked into the disc cover storage bin 290d manually or by a robot; when the good product loading tray 240 or the defective product loading tray 270 respectively flows to the bottom of the disc cover grabbing robot 290b, the good product loading tray 240 and the defective product loading tray 270 pause, and the disc cover grabbing robot 290b will grab the disc cover in the disc cover storage bin 290d and move it to just above the good product loading tray 240 or the defective product loading tray 270, and then close the disc cover to the good product loading tray 240 or the defective product loading tray 270, thereby completing the capping operation; the good product loading tray 240 or the defective product loading tray 270 after completing the capping operation continues to flow to the good product storage bin 250 or the defective product storage bin 280 respectively.

[0030] The appearance inspection and sorting process of products by the hexahedron appearance defect inspection equipment is as follows:

[0031] 1. The tray conveyor belt 310 transfers the loading tray 320 to the loading grabbing position. The loading robot 330 grabs the product on the loading tray 320 and moves it to the inspection conveyor belt 110. The empty loading tray 320 is transferred to the empty loading tray bin by the tray conveyor belt 310;

[0032] 2. The inspection conveyor belt 110 transfers the product to the top surface inspection module 120 and the front and back surface inspection module 130, and the top surface inspection module 120 and the front and back surface inspection module 130 respectively perform appearance inspections on the product;

[0033] 3. After the product has completed the appearance inspection of the top surface and the front and back surfaces, the unloading robot 160 picks up the product and continues to move it to the left and right surface inspection module 140 and the bottom surface inspection module 150. The left and right surface inspection module 140 and the bottom surface inspection module 150 respectively perform appearance inspection operations on the left and right surfaces and the bottom surface of the product;

[0034] 4. After the six-side inspection, the product is transferred by the unloading robot 160 to the material separation conveyor 220. The material separation conveyor 220 transfers the product to the bottom of the material separation robot 210. The material separation robot 210 obtains the inspection information of the product and then transfers the good product to the good product loading tray 240 and the defective product to the defective product loading tray 270.

[0035] 5. After the good product loading tray 240 and the defective product loading tray 270 are filled, the tray cover grasping robot 290b performs the capping operation, and then the good product loading tray 240 is transferred to the good product storage bin 250 via the good product conveyor belt 230, and the defective product loading tray 270 is transferred to the defective product storage bin 280 via the defective product conveyor belt 260; in addition, new good product empty trays and defective empty trays can be replenished by the empty tray grasping robot 290a.

[0036] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A hexahedron appearance defect detection device, characterized in that: include: A six-side detection device, the six-side detection device includes a detection conveyor belt, a top surface detection module, a front and back surface detection module, a left and right surface detection module, a bottom surface detection module and a blanking robot, the shooting end of the top surface detection module is located above the detection conveyor belt, the shooting ends of the front and back surface detection modules are located on both sides of the detection conveyor belt, the detection conveyor belt is used to transfer products to the top surface detection module and the front and back surface detection modules, the blanking robot is located at the end of the detection conveyor belt, the shooting ends of the left and right surface detection modules and the shooting ends of the bottom surface detection module are respectively located on one side of the blanking robot, the blanking robot is used to transfer the products on the detection conveyor belt to the left and right surface detection modules and the bottom surface detection module, and the blanking robot is also used to perform blanking operations on the products that have completed the inspection; and The material sorting device includes a material sorting robot and a material sorting conveyor belt. The material sorting conveyor belt is located below the material sorting robot, and a good product area and a bad product area are provided below the material sorting robot. When the unloading robot transfers the product to the material sorting conveyor belt, the material sorting robot is used to sort the good products and bad products on the material sorting conveyor belt to the good product area and the bad product area.

2. The hexahedron appearance defect detection device according to claim 1, characterized in that: It also includes a loading device, which includes a loading tray conveyor belt, a loading tray and a loading robot. A loading grabbing position is provided on the loading tray conveyor belt. When the loading tray conveyor belt transfers the loading tray to the loading grabbing position, the loading robot is used to transfer the product on the loading tray to the detection conveyor belt.

3. The hexahedron appearance defect detection device according to claim 2, characterized in that: The feeding robot includes a feeding linear displacement module and a lifting adsorption frame. The feeding linear displacement module is located above the material tray conveyor belt. The lifting adsorption frame is connected to the feeding linear displacement module. When the adsorption end of the lifting adsorption frame adsorbs and fixes the product, the feeding linear displacement module is used to drive the lifting adsorption frame to perform reciprocating displacement between the feeding grabbing position and the detection conveyor belt.

4. The hexahedron appearance defect detection device according to claim 2, characterized in that: An in-place identification component is provided above the material tray conveyor belt, and the in-place identification component is located on the material loading and grabbing position. The in-place identification component is used to identify the in-place of the material tray entering the material loading and grabbing position.

5. The hexahedron appearance defect detection device according to claim 1, characterized in that: The material distribution device also includes a good product conveyor belt, a good product loading tray and a good product storage bin. The good product conveyor belt is arranged on the good product area, the good product loading tray is arranged on the good product conveyor belt, and the good product storage bin is located on one end of the good product conveyor belt. The good product conveyor belt is used to transfer the good product loading tray to the good product storage bin.

6. The hexahedron appearance defect detection device according to claim 5, characterized in that: The material dividing device also includes a defective product conveyor belt, a defective product loading tray and a defective product storage bin. The defective product conveyor belt is arranged on the defective product area, the defective product loading tray is arranged on the defective product conveyor belt, and the defective product storage bin is located on one end of the defective product conveyor belt. The defective product conveyor belt is used to transfer the defective product loading tray to the defective product storage bin.

7. The hexahedron appearance defect detection device according to claim 5 or 6, characterized in that: The material distribution device also includes an empty tray grabbing robot, which is located above the good product area and the defective product area, and is used to transfer empty trays to the good product area and the defective product area.

8. The hexahedron appearance defect detection device according to claim 6, characterized in that: The material distribution device also includes a disc cover grabbing robot, which is located above the good product conveyor belt and the defective product conveyor belt, and is used to transfer the disc cover to the defective product loading tray and the good product loading tray.

9. The hexahedron appearance defect detection device according to claim 1, characterized in that: The top surface detection module includes a base, a lifting and adjusting frame, a top surface camera and a light source. The base is arranged on one side of the detection conveyor belt, the lifting and adjusting frame is arranged on the base, the top surface camera and the light source are respectively arranged on the lifting and adjusting frame, and the light source is located between the top surface camera and the detection conveyor belt. The lifting and adjusting frame is used to drive the top surface camera and the light source to perform lifting operations in the direction of the detection conveyor belt.

10. The hexahedron appearance defect detection device according to claim 9, characterized in that: There are four top surface cameras, each of which is respectively arranged on the base, and a shooting end of each top surface camera is located above the detection conveyor belt.