Visual inspection device

Abstract

The utility model relates to the technical field of product quality detection, and discloses a visual detection device which comprises first visual detection equipment, a first conveying mechanism and a first light emitting mechanism, the first conveying mechanism comprises a first conveying belt; the first conveying belt is arranged on one side of the first visual inspection equipment and is used for conveying the pole piece to the first visual inspection equipment for detection; the first light emitting mechanism comprises a first light source, the first light source and the first conveying belt are located on the same side of the first visual inspection equipment in the first direction, and the first light source is used for irradiating the side edge of the pole piece in a backlight mode; according to the visual inspection device provided by the utility model, the first light source and the first conveying belt are arranged on the same side of the first visual inspection equipment, so that the first visual inspection equipment can obtain a sharper image effect of the edge of the pole piece under the illumination assistance of the first light source, the problem that the edge of the pole piece is grabbed by mistake is avoided, and the production efficiency is improved. And the accuracy of visual detection is improved.

Description

Technical Field

[0001] This utility model relates to the field of product quality inspection technology, and in particular to a visual inspection device. Background Technology

[0002] Battery electrodes are the core components and important parts of a battery, and the coating quality of the positive and negative electrode materials determines the battery's performance. Coated battery electrodes may have surface defects such as creases, damage, cracks, missing prints, and breakage. These surface defects can range from affecting the battery's charging and discharging performance and lifespan to posing serious safety hazards, potentially causing significant personal injury and property damage.

[0003] To address potential defects in battery electrode coating, a visual inspection device needs to be introduced during the manufacturing process to visually inspect the coated electrode, identify defective electrode sheets, and ensure high battery quality. However, existing visual inspection devices often fail to capture sharp images of the electrode edges, frequently resulting in erroneous edge detection and inaccurate visual inspection results. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art as mentioned above. The purpose of this invention is to provide a visual inspection device that can obtain a sharper image effect of the electrode edge and improve the accuracy of visual inspection.

[0005] To achieve the above objectives, this utility model provides a visual inspection device for inspecting electrode sheets. The visual inspection device has a first direction and a second direction, the first direction and the second direction being perpendicular. The electrode sheet has a first surface and a second surface facing each other in the first direction, and a side surface in the second direction. The visual inspection device includes a first visual inspection unit, a first conveying mechanism, and a first light-emitting mechanism. The first visual inspection unit is used to inspect the first surface of the electrode sheet. The first conveying mechanism includes a first conveyor belt, which is disposed on one side of the first visual inspection unit in the first direction and is used to convey the electrode sheet to the first visual inspection unit for inspection. The first light-emitting mechanism includes a first light source, which is located on the same side of the first visual inspection unit in the first direction. The first light source is used to backlight the side surface of the electrode sheet.

[0006] In some embodiments, the first conveyor belt has a through first air hole, and the first conveyor belt surrounds a first installation space; the visual inspection device further includes a first negative pressure mechanism, the first negative pressure mechanism includes a first negative pressure component, the first negative pressure component is disposed in the first installation space, the first negative pressure component has a first negative pressure cavity, and along the first direction, the end of the first negative pressure component facing the first visual inspection device has a first adsorption hole that communicates with the first negative pressure cavity.

[0007] In some embodiments, along the first direction, the end of the first negative pressure member facing the first visual inspection device is recessed in a first mounting groove in a direction away from the first visual inspection device, and the first light source is installed in the first mounting groove.

[0008] In some embodiments, the visual inspection device further has a third direction, the first direction and the second direction are perpendicular to form a first plane, and the third direction is perpendicular to the first plane; the first light-emitting mechanism further includes a first light-shielding member and a second light-shielding member, the first light-shielding member is connected to the first negative pressure member, the second light-shielding member is connected to the first negative pressure member and spaced apart from the first light-shielding member, along the third direction, a first narrow gap communicating with the first mounting groove is formed between the end of the first light-shielding member near the second light-shielding member and the end of the second light-shielding member near the first light-shielding member, along the first direction, the first narrow gap is located between the first light source and the first visual inspection device.

[0009] In some embodiments, the first light-emitting mechanism further includes a first light-transmitting element, which is disposed in the first mounting groove and located between the first light source and the first narrow gap.

[0010] In some embodiments, the side wall of the first negative pressure member is provided with a first mounting hole that communicates with the first mounting groove, and the first light-transmitting member can enter and exit the first mounting groove through the first mounting hole.

[0011] In some embodiments, the first visual inspection device includes a device body and a line scan camera. The device body is located on one side of the first conveying mechanism in the first direction, and the line scan camera is connected to the device body and used to photograph the electrode sheet.

[0012] In some embodiments, a second conveying mechanism and a second visual inspection device are also included. The second visual inspection device is used to inspect the second surface of the electrode sheet. The second conveying mechanism includes a second conveyor belt, which is disposed on one side of the second visual inspection device in the first direction and is used to convey the electrode sheet to the second visual inspection device for inspection.

[0013] In some embodiments, the second conveyor belt and the first vision inspection device are located on the same side of the first conveyor belt in the first direction, and the second vision inspection device and the first conveyor belt are located on the same side of the second conveyor belt in the first direction.

[0014] In some embodiments, along the first direction, the first conveyor belt and the second conveyor belt partially overlap. When the electrode is placed at the overlapping portion of the first conveyor belt and the second conveyor belt, the first surface of the electrode is attached to the first conveyor belt, and the second surface of the electrode is attached to the second conveyor belt.

[0015] Compared with the prior art, the visual inspection device of this utility model has the following advantages: by placing the first light source and the first conveyor belt on the same side of the first visual inspection device, and enabling the first light source to illuminate the side of the electrode sheet in a backlighting manner, the first light source can provide edge illumination for the electrode sheet when the first visual inspection device captures the edge of the electrode sheet, so that the edge of the electrode sheet is more clearly visible. Thus, with the help of the illumination of the first light source, the first visual inspection device can obtain a sharper image effect of the electrode sheet edge, thereby avoiding the problem of the first visual inspection device misgrabbing the edge of the electrode sheet and improving the accuracy of visual inspection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a visual inspection device provided in an embodiment of the present invention;

[0017] Figure 2 This is a front view of a visual inspection device provided in an embodiment of this utility model;

[0018] Figure 3 yes Figure 2 Enlarged view of point A;

[0019] Figure 4 yes Figure 2 Enlarged view of point B;

[0020] Figure 5 This is a top view of the conveying mechanism provided in this embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the first visual inspection device provided in this embodiment of the present invention;

[0022] Figure 7 This is an exploded view of the first light-emitting mechanism provided in this embodiment of the utility model;

[0023] Figure 8 This is an exploded view of the second light-emitting mechanism provided in this embodiment of the utility model.

[0024] In the figure, 1 is the first conveying mechanism; 11 is the first conveyor belt; 12 is the first conveying roller; 111 is the first air hole; and 112 is the first installation space.

[0025] 2. Electrode; 201. First surface; 202. Second surface; 21. Side edge; 211. First side edge; 212. Second side edge;

[0026] 3. First visual inspection equipment; 31. Equipment body; 32. Camera; 33. Third light source;

[0027] 4. First light-emitting mechanism; 41. First light source; 42. First light-shielding component; 43. Second light-shielding component; 44. First light-transmitting component; 421. First narrow gap;

[0028] 5. First negative pressure mechanism; 51. First negative pressure component; 52. First adapter; 511. First negative pressure chamber; 512. First suction hole; 513. First mounting groove; 514. First mounting hole;

[0029] 6. Second conveying mechanism; 61. Second conveyor belt; 62. Second conveyor roller; 611. Second air hole; 612. Second installation space;

[0030] 7. Second light-emitting mechanism; 71. Second light source; 72. Third light-shielding component; 73. Fourth light-shielding component; 74. Second light-transmitting component; 721. Second narrow gap;

[0031] 8. Second negative pressure mechanism; 81. Second negative pressure component; 82. Second adapter; 811. Second negative pressure chamber; 812. Second suction hole; 813. Second mounting groove; 814. Second mounting hole;

[0032] 9. Second vision inspection equipment;

[0033] Z, first direction; X, second direction; Y, third direction. Detailed Implementation

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] like Figures 1-2 As shown in the preferred embodiment of this utility model, a visual inspection device is used to inspect electrode 2. The visual inspection device has a first direction Z, a second direction X, and a third direction Y, which are perpendicular to each other. The visual inspection device includes a first conveying mechanism 1, a first visual inspection device 3, a first light-emitting mechanism 4, a first negative pressure mechanism 5, a second conveying mechanism 6, a second light-emitting mechanism 7, a second negative pressure mechanism 8, and a second visual inspection device 9.

[0040] It should be noted that the introduction of the first direction Z, the second direction X, and the third direction Y in the various embodiments of this application is merely for the convenience of describing spatial positional relationships and should not be construed as limiting the scope of the embodiments of this application. Therefore, the pairwise perpendicular relationship of the first direction Z, the second direction X, and the third direction Y can be interpreted, depending on the actual technical scenario, as the first direction Z, the second direction X, and the third direction Y respectively representing three mutually perpendicular directions in three-dimensional space, or it can be reasonably interpreted as a nearly perpendicular relationship between the first direction Z, the second direction X, and the third direction Y, for example, the included angles between the first direction Z, the second direction X, and the third direction Y are all within the range of 85°-95°... As long as the technical solution can conform to the spirit of this application or achieve the technical effect described in this application, it can be considered to fall within the scope defined by the appended claims.

[0041] See Figures 1-5 The first conveyor belt 11 is located on one side of the first visual inspection device 3 in the first direction Z and is used to transport the electrode 2 to the first visual inspection device 3 for inspection.

[0042] The first conveying mechanism 1 includes a first conveyor belt 11 and a first conveyor roller 12, wherein the first conveyor belt 11 is connected to the first conveyor roller 12.

[0043] The first conveyor belt 11 has a through first air hole 111, and the first conveyor belt 11 forms a first installation space 112.

[0044] Along the second direction X, the dimension of the first conveyor belt 11 in the second direction X is b.

[0045] See Figures 1-5 The electrode 2 has a first surface 201 and a second surface 202 opposite to each other in the first direction Z, and a side 21 in the second direction X.

[0046] Side 21 includes a first side 211 and a second side 212 opposite to the first side 211.

[0047] Along the second direction X, the distance between the first side 211 and the second side 212 is a, satisfying: a > b. The constraint a > b ensures that the edge of the electrode 2 is located outside the edge of the first conveyor belt 11, thereby ensuring that the first light source 41 can illuminate the edge of the electrode 2 and provide edge illumination for the electrode 2.

[0048] In this embodiment, the first surface 201 is the front side of the electrode 2, and the second surface 202 is the back side of the electrode 2.

[0049] The first visual inspection device 3 is used to inspect the first surface 201 of the electrode 2, and the second visual inspection device 9 is used to inspect the second surface 202 of the electrode 2.

[0050] See Figures 1-6 The first visual inspection device 3 includes a main body 31, a line scan camera 32, and a third light source 33. The main body 31 is located on one side of the first conveying mechanism 1 in the first direction Z. The line scan camera 32 is connected to the main body 31 and is used to photograph the electrode 2. The third light source 33 is connected to the end of the main body 31 facing the first conveyor belt 11 and is used to illuminate the first surface 201 of the electrode 2 when the line scan camera 32 photographs the electrode 2. Using the first visual inspection device 3, which integrates the main body 31 and the line scan camera 32, can reduce the cost of the optical imaging system, the system space occupied, the debugging difficulty, and the maintenance difficulty.

[0051] In this embodiment, the third light source 33 has a strip-shaped structure, and the extension direction of the third light source 33 is perpendicular to the movement direction of the first conveyor belt 11.

[0052] See Figures 1-3 ,and Figure 7 The first light-emitting mechanism 4 includes a first light source 41, a first light-shielding member 42, a second light-shielding member 43, and a first light-transmitting member 44.

[0053] The first light source 41 and the first conveyor belt 11 are located on the same side of the first visual inspection device 3 in the first direction Z. The first light source 41 is used to backlight the side 21 of the electrode 2. By placing the first light source 41 and the first conveyor belt 11 on the same side of the first visual inspection device 3 and enabling the first light source 41 to illuminate the side 21 of the electrode 2, the first light source 41 can provide edge illumination for the electrode 2 when the first visual inspection device 3 captures the edge of the electrode 2, making the edge of the electrode 2 more clearly visible. This allows the first visual inspection device 3 to obtain a sharper image effect of the edge of the electrode 2 with the help of the illumination of the first light source 41, thereby avoiding the problem of the first visual inspection device 3 misgrabbing the edge of the electrode 2 and improving the accuracy of visual inspection.

[0054] The first direction Z and the second direction X are perpendicular to form a first plane, and the third direction Y is perpendicular to the first plane. The first light-emitting mechanism 4 also includes a first light-shielding member 42 and a second light-shielding member 43. The first light-shielding member 42 is connected to the first negative pressure mechanism 5, and the second light-shielding member 43 is connected to the first negative pressure mechanism 5 and is spaced apart from the first light-shielding member 42.

[0055] Along the first direction Z, a first mounting groove 513 is recessed at the end of the first negative pressure member 51 facing the first visual inspection device 3 and in a direction away from the first visual inspection device 3, and the first light source 41 is mounted in the first mounting groove 513. Along the third direction Y, a first narrow gap 421 is formed between the end of the first light-shielding member 42 near the second light-shielding member 43 and the end of the second light-shielding member 43 near the first light-shielding member 42, communicating with the first mounting groove 513. Along the first direction Z, the first narrow gap 421 is located between the first light source 41 and the first visual inspection device 3. By placing the first narrow gap 421 between the first light source 41 and the first visual inspection device 3, when the first conveyor belt 11 transports the electrode 2 between the first narrow gap 421 and the first visual inspection device 3, the light emitted by the first light source 41 can pass through the first narrow gap 421 and illuminate the back and side 21 of the electrode 2. This allows the first light source 41 to emit light from the mounting groove 513, making the light source as close as possible to the electrode 2. When the first visual inspection device 3 captures the edge of the electrode 2, it provides back illumination and edge illumination for the electrode 2, making the edge of the electrode 2 more clearly visible. This helps prevent the first visual inspection device 3 from misgrabbing the edge of the electrode 2. This addresses the issue of improving the accuracy of visual inspection. As the first conveyor belt 11 moves the electrode 2, the visual inspection device can obtain clear and complete image information of the electrode 2's edge by scanning its edge. Simultaneously, the first narrow gap 421 protects the first light source 41 in a more enclosed environment, reducing dust and foreign objects entering the first mounting groove 513 from the outside. This prevents the surface of the first light source 41 from being contaminated by dust and foreign objects, thereby preventing the imaging background area of ​​the electrode 2 from being contaminated by dust and foreign objects. This helps reduce background noise interference in the edge imaging of the electrode 2 and improves the imaging quality of the electrode 2.

[0056] In this embodiment, the first direction Z, the second direction X, and the third direction Y are perpendicular to each other.

[0057] The first light-transmitting element 44 is located between the first light source 41 and the first narrow gap 421.

[0058] See Figures 1-3 ,and Figure 7 The visual inspection device also includes a first negative pressure mechanism 5, which includes a first negative pressure component 51 and a first adapter 52.

[0059] The first negative pressure component 51 is disposed within the first installation space 112. The first negative pressure component 51 has a first negative pressure cavity 511. Along the first direction Z, the end of the first negative pressure component 51 facing the first visual inspection device 3 has a first adsorption hole 512 that communicates with the first negative pressure cavity 511. By using the first negative pressure cavity 511, the first adsorption hole 512, and the first air hole 111, the electrode 2 on the first conveyor belt 11 can be adsorbed by negative pressure and effectively fixed on the first conveyor belt 11. This can prevent the electrode 2 from shifting or falling off due to vibration or tilting during the conveying process, ensuring the stability of the electrode 2 during the conveying process. At the same time, negative pressure adsorption can adapt to electrode 2 of different shapes and sizes, has good versatility, and reduces the need for modification of the conveying equipment.

[0060] Specifically, the first light-shielding member 42 and the second light-shielding member 43 are both connected to the first negative pressure member 51.

[0061] The first negative pressure mechanism 5 also includes a first negative pressure generator (not shown), a first adapter 52 connected to the first negative pressure component 51, and a first negative pressure chamber 511 connected to the first negative pressure generator through the first adapter 52.

[0062] In this embodiment, the first negative pressure component 51 has a plate-like structure.

[0063] In this embodiment, the first negative pressure cavity 511 has a strip-shaped structure, and the end of the first negative pressure cavity 511 facing the first visual inspection device 3 is open to form a first adsorption hole 512.

[0064] Along the first direction Z, the end of the first negative pressure component 51 facing the first visual inspection device 3 is recessed into a first mounting groove 513 in the direction away from the first visual inspection device 3, and the first light source 41 is installed in the first mounting groove 513. In this way, the space of the first negative pressure component 51 can be fully utilized, making the layout of the entire visual inspection device more compact and saving the space required for additional installation of the first light source 41; at the same time, placing the first light source 41 in the first mounting groove 513 can protect the first light source 41 in a relatively closed environment, reducing the impact of external temperature and humidity on the first light source 41, and helping to extend the service life of the first light source 41.

[0065] The first light-transmitting element 44 is disposed within the first mounting groove 513. By disposing the first light-transmitting element 44 within the first mounting groove 513 and between the first light source 41 and the first narrow gap 421, light emitted from the first light source 41 can pass through the first light-transmitting element 44, enabling the first light source 41 to provide back and edge illumination for the electrode 2 being inspected. Furthermore, the first light-transmitting element 44 isolates dust and foreign objects falling from the first narrow gap 421, further preventing the surface of the first light source 41 from being contaminated by dust and foreign objects, thus helping to improve the imaging quality of the electrode 2.

[0066] The side wall of the first negative pressure component 51 has a first mounting hole 514 that communicates with the first mounting groove 513. The first light-transmitting component 44 can enter and exit the first mounting groove 513 through the first mounting hole 514. This facilitates the assembly and disassembly of the first light-transmitting component 44 and the first negative pressure component 51, thereby facilitating the regular cleaning of the first light-transmitting component 44.

[0067] See Figures 1-2 , Figures 4-5 and Figure 8 The visual inspection device also includes a second conveying mechanism 6 and a second visual inspection device 9. The second visual inspection device 9 is used to inspect the second surface 202 of the electrode 2. The second conveying mechanism 6 includes a second conveyor belt 61, which is located on one side of the second visual inspection device 9 in the first direction Z and is used to transport the electrode 2 to the second visual inspection device 9 for inspection. The use of the second conveying mechanism 6 and the second visual inspection device 9 allows them to cooperate with the first conveying mechanism 1 and the first visual inspection device 3, enabling the visual inspection device to inspect the opposing first surface 201 and second surface 202 of the electrode 2. This ensures that both the first surface 201 and the second surface 202 of the electrode 2 are carefully inspected, without overlooking any potential defects, thus improving the completeness of the electrode 2 inspection. Simultaneously, it allows the visual inspection device to complete a comprehensive inspection of the electrode 2 in a relatively short time, resulting in high inspection efficiency.

[0068] The second conveyor belt 61 and the first visual inspection device 3 are located on the same side of the first conveyor belt 11 in the first direction Z, and the second visual inspection device 9 and the first conveyor belt 11 are located on the same side of the second conveyor belt 61 in the first direction Z. This design allows for a more compact overall structure of the visual inspection device, saving installation space and facilitating its installation and layout.

[0069] Along the first direction Z, the first conveyor belt 11 and the second conveyor belt 61 partially overlap. When the electrode 2 is placed at the overlapping portion of the first conveyor belt 11 and the second conveyor belt 61, the first surface 201 of the electrode 2 adheres to the first conveyor belt 11, and the second surface 202 of the electrode 2 adheres to the second conveyor belt 61. Thus, when the electrode 2 is placed at the overlapping portion of the first conveyor belt 11 and the second conveyor belt 61, the electrode 2 can be smoothly and stably transferred automatically from the first conveyor belt 11 to the second conveyor belt 61. This allows the visual inspection device to perform continuous and rapid inspection of the electrode 2, helping to reduce the inspection time of the electrode 2 and improve inspection efficiency.

[0070] The second conveyor belt 61 has a through second air hole 611, and the second conveyor belt 61 forms a second installation space 612.

[0071] The second conveying mechanism 6 also includes a second conveying roller 62, and a second conveyor belt 61 is connected to the second conveying roller 62.

[0072] The visual inspection device also includes a second negative pressure mechanism 8, which comprises a second negative pressure component 81, a second adapter 82, and a second negative pressure generator. The second negative pressure component 81 is disposed within the second mounting space 612 and has a second negative pressure cavity 811. A second adsorption hole 812, communicating with the second negative pressure cavity 811, is opened at one end of the second negative pressure component 81 facing the electrode 2. The second light source 71 is mounted on the second negative pressure component 81. The second adapter 82 is connected to the second negative pressure component 81, and the second negative pressure cavity 811 is connected to the second negative pressure generator via the second adapter 82. By using the second negative pressure cavity 811, the second adsorption hole 812, and the second vent 611, the electrode 2 on the second conveyor belt 61 can be adsorbed by negative pressure and effectively fixed on the second conveyor belt 61. This prevents the electrode 2 from shifting or falling off during transport due to vibration or tilting, ensuring the stability of the electrode 2 during transport.

[0073] The visual inspection device also includes a second light-emitting mechanism 7, which includes a second light source 71. The second light source 71 is disposed on the side of the electrode 2 facing away from the second visual inspection device 9 in the first direction Z. By disposing the second light source 71 on the side of the electrode 2 facing away from the second visual inspection device 9 in the first direction Z, the second light source 71 can provide edge illumination and front illumination to the electrode 2 when the second visual inspection device 9 captures the edge of the electrode 2 from the back, making the edge of the electrode 2 more clearly visible. This allows the second visual inspection device 9 to obtain a sharper image of the edge of the electrode 2 with the help of the second light source 71, thereby avoiding the problem of the second visual inspection device 9 misgrabbing the edge of the electrode 2 and improving the accuracy of the visual inspection of the second visual inspection device 9.

[0074] Along the second direction X, the second conveyor belt 61 has a dimension of b in the second direction X, satisfying: a > c. The constraint a > c ensures that the edge of the electrode 2 is located outside the edge of the second conveyor belt 61, thereby ensuring that the second light source 71 can illuminate the edge of the electrode 2 and provide edge illumination for the electrode 2.

[0075] In this embodiment, the second negative pressure component 81 has a plate-like structure.

[0076] In this embodiment, the second negative pressure member 81 has a recessed second mounting groove 813 at one end facing the electrode 2, and the second light source 71 is installed in the second mounting groove 813. This makes full use of the space of the second negative pressure member 81, resulting in a more compact layout of the entire visual inspection device and saving the space required for additional installation of the second light source 71. Simultaneously, by placing the second light source 71 in the second mounting groove 813, the second light source 71 can be protected in a relatively enclosed environment, reducing the impact of external debris, external temperature, and external humidity on the second light source 71, thus helping to extend its service life.

[0077] The second light-emitting mechanism 7 also includes a third light-shielding member 72, a fourth light-shielding member 73, and a second light-transmitting member 74. The third light-shielding member 72 is connected to the second negative pressure member 81, and the fourth light-shielding member 73 is connected to the second negative pressure member 81 and located on the third light-shielding member 72 in the third direction Y. A second narrow gap 721 communicating with the second mounting groove 813 is formed between the end of the third light-shielding member 72 facing the fourth light-shielding member 73 and the end of the fourth light-shielding member 73 facing the third light-shielding member 72. Along the first direction Z, the second narrow gap 721 is located between the second light source 71 and the second visual inspection device 9. Thus, the second narrow gap 721 can provide front illumination and edge illumination for the electrode 2 when the second visual inspection device 9 captures the edge of the electrode 2, making the edge of the electrode 2 more clearly visible. This can avoid the problem of the second visual inspection device 9 misgrabbing the edge of the electrode 2 and improve the accuracy of visual inspection. At the same time, the second narrow gap 721 can protect the second light source 71 in a more enclosed environment, preventing the surface of the first light source 41 from being contaminated by dust and foreign objects, which helps to reduce background noise interference at the edge of the electrode 2 and improve the imaging quality of the electrode 2.

[0078] The second light-transmitting element 74 is connected within the second mounting groove 813 and located between the second light source 71 and the second narrow gap 721. The second light-transmitting element 74 allows light emitted from the second light source 71 to pass through, enabling the second light source 71 to provide frontal and edge illumination to the electrode 2 being inspected. Simultaneously, the second light-transmitting element 74 isolates dust and foreign objects falling from the second narrow gap 721, further preventing contamination of the surface of the second light source 71 by dust and foreign objects, thus helping to improve the imaging quality of the electrode 2.

[0079] The second negative pressure component 81 has a second mounting hole 814 on its side wall in the second direction X, which communicates with the second mounting groove 813. The second light-transmitting component 74 enters and exits the second mounting groove 813 through the second mounting hole 814. This facilitates the assembly and disassembly of the second light-transmitting component 74 and the second negative pressure component 81, thereby facilitating the periodic cleaning of the second light-transmitting component 74.

[0080] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A visual inspection device for inspecting an electrode (2), the visual inspection device having a first direction (Z) and a second direction (X), the first direction (Z) and the second direction (X) being perpendicular, the electrode (2) having opposing first surfaces (201) and second surfaces (202) in the first direction (Z), and the electrode (2) having a side edge (21) in the second direction (X), characterized in that, The visual inspection device includes: A first visual inspection device (3) is used to inspect the first surface (201) of the electrode (2); A first conveying mechanism (1) includes a first conveyor belt (11), which is disposed on one side of the first visual inspection device (3) in the first direction (Z) and is used to convey the electrode (2) to the first visual inspection device (3) for inspection; The first light-emitting mechanism (4) includes a first light source (41), the first light source (41) and the first conveyor belt (11) being located on the same side of the first visual inspection device (3) in the first direction (Z), and the first light source (41) being used to backlight the side (21) of the electrode (2).

2. The visual inspection device according to claim 1, characterized in that, The first conveyor belt (11) has a through first air hole (111), and the first conveyor belt (11) forms a first installation space (112); The visual inspection device further includes a first negative pressure mechanism (5), the first negative pressure mechanism (5) includes a first negative pressure component (51), the first negative pressure component (51) is disposed in the first installation space (112), the first negative pressure component (51) has a first negative pressure cavity (511), and along the first direction (Z), the first negative pressure component (51) has a first adsorption hole (512) at one end facing the first visual inspection device (3) that communicates with the first negative pressure cavity (511).

3. The visual inspection device according to claim 2, characterized in that, Along the first direction (Z), the first negative pressure member (51) is recessed in a first mounting groove (513) at one end facing the first visual inspection device (3) and away from the first visual inspection device (3), and the first light source (41) is installed in the first mounting groove (513).

4. The visual inspection device according to claim 3, characterized in that, The visual inspection device also has a third direction (Y), the first direction (Z) and the second direction (X) are perpendicular to form a first plane, and the third direction (Y) is perpendicular to the first plane; The first light-emitting mechanism (4) further includes a first light-shielding member (42) and a second light-shielding member (43). The first light-shielding member (42) is connected to the first negative pressure member (51), and the second light-shielding member (43) is connected to the first negative pressure member (51) and spaced apart from the first light-shielding member (42). Along the third direction (Y), a first narrow gap (421) communicating with the first mounting groove (513) is formed between the end of the first light-shielding member (42) near the second light-shielding member (43) and the end of the second light-shielding member (43) near the first light-shielding member (42). Along the first direction (Z), the first narrow gap (421) is located between the first light source (41) and the first visual inspection device (3).

5. The visual inspection device according to claim 4, characterized in that, The first light-emitting mechanism (4) further includes a first light-transmitting element (44), which is disposed in the first mounting groove (513) and located between the first light source (41) and the first narrow gap (421).

6. The visual inspection device according to claim 5, characterized in that, The side wall of the first negative pressure component (51) is provided with a first mounting hole (514) that communicates with the first mounting groove (513), and the first light-transmitting component (44) can enter and exit the first mounting groove (513) through the first mounting hole (514).

7. The visual inspection device according to claim 1, characterized in that, The first visual inspection device (3) includes a device body (31) and a line scan camera (32). The device body (31) is located on one side of the first conveying mechanism (1) in the first direction (Z). The line scan camera (32) is connected to the device body (31) and is used to photograph the electrode (2).

8. The visual inspection device according to claim 1, characterized in that, It also includes a second conveying mechanism (6) and a second visual inspection device (9), the second visual inspection device (9) being used to inspect the second surface (202) of the electrode (2), the second conveying mechanism (6) including a second conveyor belt (61), the second conveyor belt (61) being disposed on one side of the second visual inspection device (9) in the first direction (Z) and being used to convey the electrode (2) to the second visual inspection device (9) for inspection.

9. The visual inspection device according to claim 8, characterized in that, The second conveyor belt (61) and the first visual inspection device (3) are located on the same side of the first conveyor belt (11) in the first direction (Z), and the second visual inspection device (9) and the first conveyor belt (11) are located on the same side of the second conveyor belt (61) in the first direction (Z).

10. The visual inspection device according to claim 9, characterized in that, Along the first direction (Z), the first conveyor belt (11) and the second conveyor belt (61) partially overlap. When the electrode (2) is placed at the overlapping part of the first conveyor belt (11) and the second conveyor belt (61), the first surface (201) of the electrode (2) is attached to the first conveyor belt (11), and the second surface (202) of the electrode (2) is attached to the second conveyor belt (61).

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