Appearance detection device and method

Abstract

The invention relates to an appearance detection device and method.The appearance detection device comprises a supporting unit, the supporting unit comprises a supporting plate, a feeding area and a discharging area are arranged on the supporting plate in the first direction in a spaced mode, the feeding area is used for placing a to-be-detected piece, and the discharging area is used for placing the to-be-detected piece subjected to appearance detection; the image acquisition unit comprises a camera module extending in the second direction, a lens of the camera module is arranged upwards, and the camera module is located between the feeding area and the discharging area; the transfer unit comprises a moving unit and a suction unit, and the moving unit comprises a first moving body and a second moving body; the suction unit comprises a first suction assembly and a second suction assembly. The first suction assembly and the second suction assembly can suck the to-be-tested piece. According to the invention, the test process can be effectively simplified, the posture adjustment of the to-be-tested piece can be more concise and convenient, and the comprehensive detection of the to-be-tested piece at each angle can be met; the accuracy of a test result is guaranteed, and the efficiency of appearance detection can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of appearance inspection, and in particular to an appearance inspection device and method. Background Art

[0002] In the manufacturing industry, in order to ensure the aesthetics of the products and the factory qualified rate, it is necessary to conduct appearance inspection on the products. Product appearance inspection is mainly used to quickly identify the appearance defects of samples. It is an important means to confirm foreign matter, flaws and defects on the surface of components and products. Since products usually have multiple inspection surfaces, and the inspection surfaces may include irregular structures. In order to ensure that the products meet the requirements of subsequent production or factory delivery, it is necessary to conduct a more comprehensive inspection of the appearance of the products. In the prior art, the appearance inspection method uses a linear motor module and a camera to cooperate with each other for inspection. The camera is slidably installed on a track. During the appearance inspection process, both the product and the camera need to move to achieve mutual cooperation.

[0003] However, the disadvantage of the existing technology is that the overall structure of the existing appearance testing device is relatively complex. Since the movement of the product and the camera need to be controlled separately, the overall control method is relatively complex, making the appearance inspection process relatively cumbersome, which in turn leads to low efficiency of appearance inspection. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an appearance inspection device and method that can effectively simplify the test process, and can make the posture adjustment of the workpiece to be tested more concise and convenient, and can meet the comprehensive inspection of all angles and inspection surfaces of the workpiece to be tested. In addition, the camera module is fixedly set to ensure the stability of the measurement source, which can effectively improve the efficiency of appearance inspection and also ensure the accuracy of the test results.

[0005] In order to solve the above technical problems, the present invention provides an appearance inspection device for performing appearance inspection on a test piece, comprising: A support unit, comprising a support plate, on which a loading area and a unloading area are arranged at intervals along a first direction, the loading area is used to place the test piece, and the unloading area is used to place the test piece that has completed appearance inspection; An image acquisition unit, comprising a camera module extending along a second direction, a lens of the camera module being arranged upward, the second direction being perpendicular to the first direction, and the camera module being located between the loading area and the unloading area; The transfer unit includes a moving unit and a suction unit, wherein the moving unit includes a first moving body and a second moving body; the suction unit includes a first suction component and a second suction component, wherein the first suction component is arranged at a movable end of the first moving body, and the second suction component is arranged at a movable end of the second moving body; the first suction component and the second suction component can suck the workpiece to be tested; A control unit, which is in communication with the image acquisition unit and the transfer unit to control the image acquisition unit to perform image acquisition and control the movement of the transfer unit; During operation, the first movable body moves to the loading area, absorbs the workpiece to be tested through the first suction component, and then moves to above the camera module to perform a first image acquisition on the workpiece to be tested. Then, the second suction component is driven to move and absorbs the workpiece to be tested. After the second suction component sucks the workpiece to be tested, the first suction component releases the workpiece to be tested, and the second movable body drives the workpiece to be tested to move above the camera module to perform a second image acquisition on the workpiece to be tested. The workpiece to be tested that has completed the inspection is driven by the second movable body to move and be placed in the unloading area.

[0006] In one embodiment of the present invention, the test piece has a first contact surface and a second contact surface opposite to each other, the first suction component is in contact with the first contact surface, and the second suction component is in contact with the second contact surface.

[0007] In one embodiment of the present invention, the first suction assembly includes a first mounting plate, a first connecting portion, a first suction nozzle assembly and a first driving assembly, the first connecting portion is arranged in the middle of the first mounting plate, and the first connecting portion is connected to the first movable body; a plurality of first suction nozzle assemblies are provided, and a plurality of first suction nozzle assemblies are arranged on the first mounting plate at intervals along the second direction, the first driving assembly is assembled on the first mounting plate, and a plurality of first suction nozzle assemblies can rotate under the drive of the first driving assembly.

[0008] In one embodiment of the present invention, the first suction nozzle assembly includes a first connecting rod, a first pneumatic suction nozzle and a first positioning module, the first connecting rod is transmission-connected to the first driving assembly, the first pneumatic suction nozzle is connected to the first connecting rod, the first positioning module is adjacent to the first pneumatic suction nozzle, and the first positioning module matches the first contact surface of the test piece.

[0009] In one embodiment of the present invention, the second suction assembly includes a second mounting plate, a second connecting portion, a second suction nozzle assembly and a second driving assembly, the second connecting portion is arranged in the middle of the second mounting plate, and the second connecting portion is connected to the second movable body; a plurality of second suction nozzle assemblies are provided, and a plurality of second suction nozzle assemblies are arranged on the second mounting plate at intervals along the second direction, the second driving assembly is assembled on the second mounting plate, and a plurality of second suction nozzle assemblies can rotate under the drive of the second driving assembly.

[0010] In one embodiment of the present invention, the second suction nozzle assembly includes a second connecting rod, a second pneumatic suction nozzle and a second positioning module, the second connecting rod is transmission-connected to the second driving assembly, the second pneumatic suction nozzle is connected to the second connecting rod, the second positioning module is adjacent to the second pneumatic suction nozzle, and the second positioning module matches the second contact surface of the test piece.

[0011] In one embodiment of the present invention, the support unit further includes a first carrier and a second carrier, the first carrier being detachably arranged in the loading area, and the test pieces are placed on the first carrier at intervals along the second direction; the second carrier being detachably arranged in the unloading area, and the test pieces that have completed the inspection are placed on the second carrier at intervals along the second direction.

[0012] In one embodiment of the present invention, a clearance opening is opened on the support plate, the camera module is arranged above the clearance opening, and the wiring terminal of the camera module extends through the clearance opening.

[0013] In one embodiment of the present invention, the first moving body includes a three-axis robotic arm; the second moving body includes a three-axis robotic arm.

[0014] The present invention also provides an appearance inspection method, using the appearance inspection device as described above to perform appearance inspection on multiple test pieces, the appearance inspection method comprising: Step S1, placing a plurality of the test pieces at intervals in a loading area along a second direction; Step S2, sucking the plurality of the test pieces by a first suction component, and moving the plurality of the test pieces to the top of the camera module, performing a first image acquisition on the plurality of the test pieces, and uploading the acquired image information to a control unit; Step S3, the second suction component moves to dock with the plurality of the test pieces, and after docking, controls the first suction component to release the plurality of the test pieces, and then moves the second suction component to the top of the camera module to perform a second image acquisition on the plurality of the test pieces, and uploads the acquired image information to the control unit; Step S4, the plurality of test pieces that have completed two image acquisitions are moved under the driving of the second moving body and placed in a material unloading area.

[0015] The above technical solution of the present invention has the following advantages compared with the prior art: The appearance inspection device described in the present invention is provided with a support unit, an image acquisition unit, a transfer unit and a control unit. A plurality of test pieces are placed on the support unit. The transfer unit includes a first moving body, a second moving body, a first suction component arranged at the movable end of the first moving body, and a second suction component arranged at the movable end of the second moving body. When performing appearance testing, the first suction component and the second suction component cooperate with each other to absorb the test piece in different areas, and perform the first image acquisition and the second image acquisition in sequence. During the second image acquisition, the area not acquired during the first image acquisition can also be photographed, so that a more comprehensive appearance photo of the test piece can be obtained, thereby ensuring the comprehensiveness of the appearance inspection and effectively avoiding the omission of a certain inspection surface of the test piece; and, by using the appearance inspection device of the present invention, the test process can be effectively simplified, and at the same time, the posture adjustment of the test piece can be more concise and convenient, which can meet the comprehensive inspection of all angles of the test piece; in addition, the camera module in the image acquisition unit of the present invention is fixedly arranged, thereby ensuring the stability of the measurement source, ensuring the accuracy of the test results, and effectively improving the efficiency of appearance inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the object to be tested from the first viewing angle of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the object to be tested from a second viewing angle of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the first moving body and the first suction component of a preferred embodiment of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the first suction component of the preferred embodiment of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the second suction component of the preferred embodiment of the present invention.

[0023] Figure 7 It is a partial structural schematic diagram of the cooperation between the first driving assembly (the second driving assembly) and the first suction nozzle assembly (the second suction nozzle assembly) in a preferred embodiment of the present invention.

[0024] Explanation of the reference numerals in the specification: 10, test piece; 101, first contact surface; 102, second contact surface; 1, support plate; 2, camera module; 31, first moving body; 32, second moving body; 41, first suction assembly; 410, first mounting plate; 411, first connecting portion; 412, first connecting rod; 413, first positioning module; 414, first rotating wheel; 415, first driving motor; 416, driving wheel; 42, second suction assembly; 420, second mounting plate; 421, second connecting portion; 422, second connecting rod; 423, second positioning module; 424, second rotating wheel; 425, second driving motor; 426, second driving wheel. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0026] Reference Figure 1 As shown, the present invention discloses an appearance inspection device for performing appearance inspection on a plurality of test pieces 10 in batches.

[0027] Specifically, the appearance inspection device includes a support unit, the support unit includes a support plate 1, and a loading area and a unloading area are arranged on the support plate 1 along a first direction at intervals. The loading area is used to place the test piece 10, and the unloading area is used to place the test piece 10 that has completed appearance inspection.

[0028] The appearance inspection device further includes an image acquisition unit, which includes a camera module 2 extending along a second direction, and a lens of the camera module 2 is arranged upward. It should be noted that the second direction is perpendicular to the first direction, and the camera module is located between the loading area and the unloading area.

[0029] The appearance inspection device further includes a transfer unit, which includes a moving unit and a suction unit. The moving unit includes a first moving body 31 and a second moving body 32 .

[0030] The suction unit includes a first suction component 41 and a second suction component 42. The first suction component 41 is disposed at the movable end of the first moving body 31 to move to a specified position under the drive of the first moving body 31. The second suction component 42 is disposed at the movable end of the second moving body 32 to move to a specified position under the drive of the second moving body 32. The first suction component 41 can perform batch suction on a plurality of the test pieces 10, and the second suction component 42 can also perform batch suction on a plurality of the test pieces 10.

[0031] At the same time, the appearance inspection device also includes a control unit, which is communicatively connected with the image acquisition unit and the transfer unit to control the image acquisition unit to acquire images and control the movement of the transfer unit.

[0032] While working: The first moving body 31 moves to the loading area, and after the first suction component 41 sucks the test piece 10, moves to above the camera module 2 to perform a first image acquisition of the test piece 10; Next, the second suction component 42 is driven to move, dock with the other side of the test piece 10, and suck the test piece 10. After the second suction component 42 sucks the test piece 10, the first suction component 31 releases the test piece 10, and the second moving body 32 drives the test piece 10 to move above the camera module 2 to perform a second image acquisition on the test piece. It should be noted that, during the second image acquisition, since the second suction component 42 contacts and absorbs the other side of the test piece 10, the position where the first suction component 41 contacts the test piece 10 can be exposed, so that the image acquisition can be performed on the area that was not acquired during the first image acquisition, thereby achieving a more comprehensive image acquisition of the test piece 10 and avoiding missing any position on the test piece 10; Finally, the tested piece 10 that has completed the test can be moved and placed in the unloading area under the drive of the second moving body 32 .

[0033] It can be known that the appearance inspection device to be protected by the present invention is provided with a support unit, an image acquisition unit, a transfer unit and a control unit, a plurality of test pieces are placed on the support unit, and the transfer unit includes a first moving body, a second moving body, a first suction component arranged at the movable end of the first moving body, and a second suction component arranged at the movable end of the second moving body. When performing appearance testing, the first suction component and the second suction component cooperate with each other to absorb the test piece in different areas, and perform the first image acquisition and the second image acquisition in sequence. During the second image acquisition, the area not acquired during the first image acquisition can also be photographed, so that a more comprehensive appearance photo of the test piece can be obtained, and then the comprehensiveness of the appearance inspection can be guaranteed, and the omission of a certain inspection surface of the test piece can be effectively avoided; and the appearance inspection device of the present invention can effectively simplify the test process, and at the same time, the posture adjustment of the test piece can be more concise and convenient, which can meet the comprehensive inspection of all angles of the test piece; in addition, the camera module in the image acquisition unit of the present invention is fixedly set, so that the stability of the measurement source can be ensured, the accuracy of the test results can be guaranteed, and the efficiency of appearance inspection can be effectively improved.

[0034] Specifically, the test piece 10 has a first contact surface 101 and a second contact surface 102 opposite to each other. During the process of sucking the test piece 10 , the first suction component 41 contacts the first contact surface 101 , and the second suction component 42 contacts the second contact surface 102 .

[0035] In detail, the first suction assembly 41 includes a first mounting plate 410, a first connecting portion 411, a first suction nozzle assembly and a first driving assembly. The first connecting portion 411 is arranged in the middle of the first mounting plate 410, and the first connecting portion 410 is connected to the first moving body 31. There are multiple first suction nozzle assemblies, and the multiple first suction nozzle assemblies are arranged on the first mounting plate 410 at intervals along the second direction. The first driving assembly is assembled on the first mounting plate 410. The multiple first suction nozzle assemblies can rotate synchronously under the drive of the first driving assembly, thereby driving the multiple test pieces 10 to rotate, so that the camera module 2 can shoot various positions of the test piece 10.

[0036] As a preferred embodiment, each of the first suction nozzle assemblies includes a first connecting rod 412, a first pneumatic suction nozzle, and a first positioning module 413. The first connecting rod 412 is provided with a first rotating wheel 414. The first connecting rod 412 is transmission-connected to the first driving assembly via the first rotating wheel 414. The first pneumatic suction nozzle is connected to the first connecting rod 412. The first positioning module 413 is adjacent to the first pneumatic suction nozzle. The first positioning module 413 matches the first contact surface 101 of the test piece 10. Such a configuration can ensure that the first suction nozzle assembly is more secure when sucking the test piece 10, thereby improving the stability of the test piece 10 during movement.

[0037] As a preferred embodiment, the first driving assembly includes a first driving motor 415, a first driving wheel 416 and a plurality of first conveying belts, the first driving motor 415 is installed on the first mounting plate 410, the output end of the first driving motor 415 is connected to the driving wheel 416, and the first conveying belt is sleeved on the first driving wheel 416 and the first rotating wheel 414, so that the first rotating wheel 414 can rotate synchronously with the first driving wheel 416.

[0038] Furthermore, the first connecting rods 412 of two adjacent first suction nozzle assemblies are connected in transmission via the first transmission belt, and so on, so that when the first driving motor 415 is activated, multiple first suction nozzle assemblies can be driven to rotate synchronously.

[0039] Further, the second suction assembly 42 includes a second mounting plate 420, a second connecting portion 421, a second suction nozzle assembly and a second driving assembly, wherein the second connecting portion 421 is disposed in the middle of the second mounting plate, and the second connecting portion 421 is connected to the second moving body 32. The second suction nozzle assembly is provided in plurality, and the plurality of second suction nozzle assemblies are spaced apart and arranged on the second mounting plate 420 along the second direction, and the second driving assembly is assembled on the second mounting plate 420, and the plurality of second suction nozzle assemblies can rotate under the drive of the second driving assembly, thereby driving the plurality of the test pieces 10 to rotate, so that the camera module 2 can take pictures of the test pieces 10 at various positions.

[0040] As a preferred embodiment, the second suction nozzle assembly includes a second connecting rod 422, a second pneumatic suction nozzle and a second positioning module 423, the second connecting rod 422 is provided with a second rotating wheel 424, the second connecting rod 422 is transmission-connected with the second driving assembly through the second rotating wheel 424, the second pneumatic suction nozzle is connected to the second connecting rod 422, the second positioning module 423 is adjacent to the second pneumatic suction nozzle, and the second positioning module 423 matches the second contact surface 102 of the test piece 10. Such a configuration can ensure that the second suction nozzle assembly is more firmly attached to the test piece 10, thereby improving the stability of the test piece 10 during movement.

[0041] It should be noted that the transmission principle between the first driving assembly and the first nozzle assemblies is the same as the transmission principle between the second driving assembly and the second nozzle assemblies.

[0042] As a preferred embodiment, the second drive assembly includes a second drive motor 425, a second drive wheel 426 and a plurality of second conveyor belts, the second drive motor 425 is mounted on the second mounting plate 420, the output end of the second drive motor 425 is connected to the second drive wheel 426, and the second conveyor belt is sleeved on the second drive wheel 426 and the second rotating wheel 424, so that the second rotating wheel 424 can rotate synchronously with the second drive wheel 426.

[0043] Furthermore, the second connecting rods 422 of two adjacent second suction nozzle assemblies are connected in transmission via the second transmission belt, and so on, so that when the second driving motor 425 is activated, multiple second suction nozzle assemblies can be driven to rotate synchronously.

[0044] As a preferred embodiment, the support unit further includes a first carrier 11 and a second carrier 12, wherein the first carrier 11 is detachably disposed in the loading area, and a plurality of the test pieces 10 are spaced apart along the second direction on the first carrier 11. The second carrier 12 is detachably disposed in the unloading area, and the test pieces 10 that have completed the test are spaced apart along the second direction on the second carrier 12.

[0045] The support plate 1 is provided with a avoidance opening 13 , the camera module 2 is arranged above the avoidance opening 13 , and the connection terminal of the camera module 2 extends through the avoidance opening 13 .

[0046] In order to provide a certain degree of protection for the first driving assembly and the second driving assembly, the first suction assembly 41 also includes a first shell, which is disposed on the first mounting plate 410, and part of the first driving assembly is accommodated in the first shell; the second suction assembly also includes a second shell, which is disposed and connected to the second mounting plate 420, and part of the second driving assembly is accommodated in the second shell.

[0047] As a preferred implementation, the camera module 2 includes a plurality of cameras sequentially arranged along the second direction.

[0048] In detail, in order to achieve better detection efficiency, the number of cameras, the number of the first suction nozzle assemblies, and the number of the second suction nozzle assemblies can be set to be consistent. Preferably, the placement spacing between two adjacent pieces to be tested 10, the spacing between two adjacent first suction nozzle assemblies, and the spacing between two adjacent second suction nozzle assemblies are also set to be consistent. In this way, when performing appearance inspection operations, a one-to-one correspondence in structure is achieved to avoid missed inspections.

[0049] Preferably, the first moving body 31 includes but is not limited to a three-axis robotic arm; the second moving body 32 includes but is not limited to a three-axis robotic arm. Embodiment 2

[0050] The present invention also discloses an appearance inspection method, which uses an appearance inspection device as described in any one of the first embodiments to perform appearance inspection on a plurality of test pieces.

[0051] Specifically, the appearance detection method includes: Step S1, placing a plurality of the test pieces 10 in a loading area at intervals along a second direction; Step S2, the first suction component 41 sucks the plurality of test pieces 10, and moves the plurality of test pieces 10 to the top of the camera module 2 driven by the first moving body 31, and performs a first image acquisition on the plurality of test pieces 10, and the acquired image information is uploaded to the control unit; Step S3, the second suction component 42 moves to the other side of the plurality of the test pieces 10 for docking. After the docking is completed, after the second suction component 42 firmly adsorbs the plurality of the test pieces 10, the first suction component 41 is controlled to release the plurality of the test pieces 10. Then, the second suction component 42 is driven by the second moving body 32 to move above the camera module 2, and a second image acquisition is performed on the plurality of the test pieces 10, and the acquired image information is uploaded to the control unit. Step S4 , the plurality of test pieces that have completed two image acquisitions are moved by the second moving body 32 and placed in a material unloading area.

[0052] It can be seen from this that the appearance inspection method to be protected by the present invention adopts a dual 3-axis mechanical arm structure, so that the posture adjustment method of the test piece is more concise. In addition, the method can meet the multi-angle visual inspection of the test piece, including but not limited to the front, back and other inspection surfaces; at the same time, the present invention also has both loading and unloading functions, thereby effectively simplifying the overall structure. In addition, since the camera module remains stationary during the inspection process in the present invention, the stability of the measurement source is ensured, and the circuit of the camera module is not easy to bend and wear, which effectively extends the service life of the camera module.

[0053] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. An appearance inspection device for performing appearance inspection on a test piece, characterized in that: include, A support unit, comprising a support plate, on which a loading area and a unloading area are arranged at intervals along a first direction, the loading area is used to place the test piece, and the unloading area is used to place the test piece that has completed appearance inspection; An image acquisition unit, comprising a camera module extending along a second direction, a lens of the camera module being arranged upward, the second direction being perpendicular to the first direction, and the camera module being located between the loading area and the unloading area; The transfer unit includes a moving unit and a suction unit, wherein the moving unit includes a first moving body and a second moving body; the suction unit includes a first suction component and a second suction component, wherein the first suction component is arranged at a movable end of the first moving body, and the second suction component is arranged at a movable end of the second moving body; the first suction component and the second suction component can suck the workpiece to be tested; A control unit, which is in communication with the image acquisition unit and the transfer unit to control the image acquisition unit to perform image acquisition and control the movement of the transfer unit; During operation, the first moving body moves to the loading area, absorbs the workpiece to be tested through the first suction component, and then moves to the top of the camera module to perform a first image acquisition on the workpiece to be tested. Then, the second suction component is driven to move and absorbs the workpiece to be tested. After the second suction component sucks the workpiece to be tested, the first suction component releases the workpiece to be tested, and the second moving body drives the workpiece to be tested to move to the top of the camera module to perform a second image acquisition on the workpiece to be tested. The tested piece that has completed the test is moved and placed in the material unloading area under the drive of the second moving body.

2. An appearance inspection device according to claim 1, characterized in that: The test piece has a first contact surface and a second contact surface opposite to each other. The first suction component contacts the first contact surface, and the second suction component contacts the second contact surface.

3. The appearance inspection device according to claim 2, characterized in that: The first suction assembly includes a first mounting plate, a first connecting portion, a first suction nozzle assembly and a first driving assembly, wherein the first connecting portion is arranged in the middle of the first mounting plate, and the first connecting portion is connected to the first movable body; a plurality of first suction nozzle assemblies are arranged, and a plurality of the first suction nozzle assemblies are arranged on the first mounting plate at intervals along the second direction, and the first driving assembly is assembled on the first mounting plate, and the plurality of the first suction nozzle assemblies can rotate under the drive of the first driving assembly.

4. The appearance inspection device according to claim 3, characterized in that: The first suction nozzle assembly includes a first connecting rod, a first pneumatic suction nozzle and a first positioning module. The first connecting rod is transmission-connected to the first driving assembly, the first pneumatic suction nozzle is connected to the first connecting rod, the first positioning module is adjacent to the first pneumatic suction nozzle, and the first positioning module matches the first contact surface of the test piece.

5. The appearance inspection device according to claim 2, characterized in that: The second suction assembly includes a second mounting plate, a second connecting portion, a second suction nozzle assembly and a second driving assembly. The second connecting portion is arranged in the middle of the second mounting plate, and the second connecting portion is connected to the second movable body. There are multiple second suction nozzle assemblies, and the multiple second suction nozzle assemblies are arranged on the second mounting plate at intervals along the second direction. The second driving assembly is assembled on the second mounting plate, and the multiple second suction nozzle assemblies can rotate under the drive of the second driving assembly.

6. The appearance inspection device according to claim 5, characterized in that: The second suction nozzle assembly includes a second connecting rod, a second pneumatic suction nozzle and a second positioning module. The second connecting rod is transmission-connected to the second driving assembly, the second pneumatic suction nozzle is connected to the second connecting rod, the second positioning module is adjacent to the second pneumatic suction nozzle, and the second positioning module matches the second contact surface of the test piece.

7. The appearance inspection device according to claim 1, characterized in that: The support unit also includes a first carrier and a second carrier. The first carrier is detachably arranged in the loading area, and the test pieces are placed on the first carrier at intervals along the second direction. The second carrier is detachably arranged in the unloading area, and the test pieces that have completed the inspection are placed on the second carrier at intervals along the second direction.

8. The appearance inspection device according to claim 1, characterized in that: The support plate is provided with an escape opening, the camera module is arranged above the escape opening, and the connection terminal of the camera module extends through the escape opening.

9. An appearance inspection device according to any one of claims 1 to 8, characterized in that: The first moving body includes a three-axis robotic arm; the second moving body includes a three-axis robotic arm.

10. A method for appearance detection, characterized in that: Using an appearance inspection device as described in any one of claims 1 to 9, multiple test pieces are subjected to appearance inspection, wherein the appearance inspection method comprises: Step S1, placing a plurality of the test pieces at intervals in a loading area along a second direction; Step S2, sucking the plurality of the test pieces by a first suction component, and moving the plurality of the test pieces to the top of the camera module, performing a first image acquisition on the plurality of the test pieces, and uploading the acquired image information to a control unit; Step S3, the second suction component moves to dock with the plurality of the test pieces, and after docking, controls the first suction component to release the plurality of the test pieces, and then moves the second suction component to the top of the camera module to perform a second image acquisition on the plurality of the test pieces, and uploads the acquired image information to the control unit; Step S4, the plurality of test pieces that have completed two image acquisitions are moved under the driving of the second moving body and placed in a material unloading area.

Images