A visual detection device for the appearance of a primary lithium battery cover group

Abstract

The utility model belongs to battery processing technical field especially one kind is covered group appearance visual detection device of lithium cell, including seat board, be equipped with support plate on seat board, be equipped with power mechanism, feeding mechanism, upper conveying mechanism, lower conveying mechanism, discharge mechanism and discharge mechanism on support plate, first visual imaging detection subassembly and second visual imaging detection subassembly are established along upper conveying mechanism on support plate, and third visual imaging detection subassembly is established along lower conveying mechanism, arc backplate is established in the discharge end of upper conveying mechanism, and power mechanism is connected with upper conveying mechanism and lower conveying mechanism power transmission. The first visual imaging detection subassembly detects the outside of the cover plate, the second visual imaging detection subassembly detects the appearance and perpendicularity of the core column, the upper conveying mechanism conveys the battery cover group to the lower conveying mechanism, the battery cover group turns, the third visual imaging detection subassembly detects the inside of the cover plate, greatly improves the detection efficiency and detection accuracy, and reduces the cost input.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a visual inspection device for the appearance of a primary lithium battery cover assembly. Background Technology

[0002] A primary lithium battery is a high-energy chemical galvanic cell, commonly known as a lithium battery. It uses metallic lithium as the negative electrode, salts or salts soluble in organic solvents as the electrolyte, and metal oxides or other solid or liquid oxidants as the positive electrode active material.

[0003] The battery cover assembly is an important component of lithium batteries. It consists of a cover plate and a core column. After the battery cover assembly is manufactured, it is necessary to test whether the battery cover assembly is qualified. The main tests are on the cover plate and the core column. The tests include whether there are defects in the appearance of the cover plate and the core column, whether there are defects in the insulating glass, the perpendicularity of the core column and the cover plate, whether the liquid injection holes on the cover plate are connected, and whether there is black material.

[0004] Currently, battery cover assembly inspection mainly relies on manual inspection, with a speed of approximately 800 units per hour. This results in a heavy workload for workers, low work efficiency, a large demand for workers, and is highly dependent on their work status, which can easily lead to false positives or false negatives. This directly affects the company's production pass rate and increases the company's cost.

[0005] To address the aforementioned issues, this utility model document proposes a visual inspection device for the appearance of a primary lithium battery cover assembly. Utility Model Content

[0006] This invention provides a visual inspection device for the appearance of primary lithium battery cover assemblies, which greatly improves inspection efficiency and accuracy while reducing labor costs.

[0007] This utility model provides the following technical solution:

[0008] A visual inspection device for the appearance of a primary lithium battery cover assembly includes a base plate with a support plate. The support plate is equipped with a power mechanism, a feeding mechanism, an upper conveying mechanism, a lower conveying mechanism, a discharge mechanism, and a unloading mechanism. Along the conveying direction of the upper conveying mechanism, the support plate is equipped with a first visual imaging detection component for detecting the outer surface of the cover and a second visual imaging detection component for detecting the core rod. Along the conveying direction of the lower conveying mechanism, a third visual imaging detection component is equipped with a third visual imaging detection component for detecting the inner surface of the cover. Both the upper and lower conveying mechanisms are horizontally arranged double-belt conveying mechanisms. The output diameter of the upper conveying mechanism is larger than the input diameter, and the input end of the lower conveying mechanism is tangent to the output end of the upper conveying mechanism. The discharge end of the upper conveying mechanism has an arc-shaped protective plate on its side to prevent the primary lithium battery cover from falling off. The power mechanism is connected to the upper and lower conveying mechanisms via power transmission.

[0009] Furthermore, the feeding mechanism includes a feeding slider, the top surface of which is an inclined surface, and the height of one end adjacent to the upper conveying mechanism is lower than that of the other end. The top surface of the feeding slider is provided with a clearance groove.

[0010] Furthermore, the upper conveying mechanism includes an upper feed end pulley, an upper discharge end pulley, and two upper conveyor belts connecting the upper feed end pulley and the upper discharge end pulley. The diameter of the upper discharge end pulley is smaller than that of the upper discharge end pulley, and the top side heights of the upper feed end pulley and the upper discharge end pulley are the same. Both the upper feed end pulley and the upper discharge end pulley are double pulleys, and a gap is left between the two upper conveyor belts for the core rod to pass through. Both the upper feed end pulley and the upper discharge end pulley are rotatably mounted on the support plate via a rotating shaft.

[0011] Furthermore, the lower conveying mechanism includes a lower feed end wheel, a lower discharge end wheel, and two lower conveyor belts connecting the lower feed end wheel and the lower discharge end wheel. The lower feed end wheel and the lower discharge end wheel have the same diameter, and their central axes are at the same height. The lower conveyor belts are tangent to the upper discharge end wheel. Both the lower feed end wheel and the lower discharge end wheel are rotatably mounted on the support plate via a rotating shaft.

[0012] Furthermore, the first visual imaging detection component includes a mounting base and a camera and a fill light fixed on the mounting base. There are 5 sets of cameras, of which 4 cameras are evenly distributed in a ring, and another set of cameras is arranged above the center of the ring.

[0013] The mounting base includes a positioning base, a steering plate, and a fixing base. The positioning base includes a positioning plate. One side of the positioning plate is provided with two clamping plates. The adjacent surfaces of the two clamping plates are provided with semi-circular clamping grooves. The other symmetrical side of the positioning plate is provided with a positioning shaft and a positioning hole.

[0014] The steering plate has an "L" shaped structure, with one side plate rotatably mounted on the positioning shaft. The side plate is provided with an arc-shaped positioning groove that matches the positioning hole. The circle of the arc-shaped positioning groove is concentric with the positioning shaft. A fixing seat is fixedly mounted on the other side plate of the steering plate.

[0015] The mounting base includes a fixing block, a support block on the fixing block, a limiting groove on the support block, the camera being fitted into the limiting groove, a pressure plate on the support block that cooperates with the limiting groove, a mounting plate on one side of the fixing block, a supplementary light on the mounting plate, and a through hole on the mounting plate through which the lens end of the camera passes.

[0016] Furthermore, the second visual imaging detection component includes a fixed plate, two adjusting plates, a fixed base mounted on the adjusting plates, a camera mounted on the fixed base, and a reflector corresponding to the camera. One end of the fixed plate is fixed to a support plate. The fixed plate has multiple first connecting holes, and the adjusting plates have multiple second connecting holes. The adjusting plates are fixed together by bolts through the first and second connecting holes. The two adjusting plates are symmetrically arranged on the fixed plate, and the included angle between the two adjusting plates is 45° to 60°. The reflector is fixed on the support plate and its position corresponds to that of the camera, and it is used in conjunction with the camera.

[0017] Furthermore, the third vision imaging detection component includes a mounting base and a camera and a fill light fixed on the mounting base. There are 5 sets of cameras, of which 4 cameras are evenly distributed in a ring, and another set of cameras is set above the center of the ring.

[0018] Furthermore, the power mechanism includes a servo motor, the output shaft of which is provided with a drive gear, the drive gear meshing with a first driven gear, the first driven gear meshing with a second driven gear, the first driven gear sharing the same shaft as the lower discharge end wheel, the shaft of the second driven gear being provided with a first pulley, and the shaft of the upper feed end wheel being provided with a second pulley, the first pulley and the second pulley being connected by a belt.

[0019] Furthermore, the discharge mechanism includes a discharge assembly and a distribution assembly. The discharge assembly includes a discharge cylinder and a discharge chute. The discharge cylinder is located on the support plate at the position corresponding to the discharge end of the lower conveying mechanism. The discharge chute is inclinedly arranged on the base plate, with its higher horizontal end corresponding to the discharge cylinder. The distribution assembly includes a distribution cylinder and a distribution plate. The distribution cylinder is located on one side of the base plate. The distribution plate is provided on the output shaft of the distribution cylinder. The distribution plate has two distribution holes, which cooperate with the discharge chute. Two distribution pipes are provided on the distribution plate at the positions corresponding to the distribution holes.

[0020] Furthermore, the discharge mechanism includes a discharge pipe, which is located at the end of the discharge end of the lower conveying mechanism.

[0021] In this invention, the outer side of the cover plate is detected by a first visual imaging detection component on the upper conveying mechanism, and the appearance and verticality of the core column are detected by a second visual imaging detection component. Then, the upper conveying mechanism transports the battery cover assembly to the lower conveying mechanism. At the same time, the battery cover assembly turns around, and the inner side of the cover plate is detected by a third visual imaging detection component. This greatly improves the detection efficiency and accuracy, and reduces the cost. Attached Figure Description

[0022] Figure 1A three-dimensional structural schematic diagram of a visual inspection device for the appearance of a primary lithium battery cover assembly provided in an embodiment of this utility model;

[0023] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0024] Figure 3 This is a three-dimensional structural diagram of a visual inspection device for the appearance of a primary lithium battery cover assembly provided in an embodiment of the present invention.

[0025] Figure 4 A three-dimensional structural diagram of a visual inspection device for the appearance of a primary lithium battery cover assembly provided in an embodiment of this utility model at one angle;

[0026] Figure 5 for Figure 4 Enlarged view of part B in the image;

[0027] Figure 6 This is a three-dimensional structural diagram of a visual inspection device for the appearance of a primary lithium battery cover assembly provided in an embodiment of the present invention.

[0028] Figure label:

[0029] 1. Seat plate; 2. Support plate;

[0030] 3. Power mechanism; 301. Servo motor; 302. Drive gear; 303. First driven gear; 304. Second driven gear; 305. First pulley; 306. Second pulley;

[0031] 4. Upper conveyor mechanism; 401. Upper feed end pulley; 402. Upper discharge end pulley; 403. Upper conveyor belt; 404. Clearance;

[0032] 5. First vision imaging detection component; 501, positioning seat; 50101, clamping plate; 50102, positioning plate; 50103, positioning shaft; 502, adjusting plate; 503, fixing seat; 50301, fixing block; 50302, support block; 50303, pressure plate; 50304, mounting plate;

[0033] 6. Second vision imaging detection component; 601. Fixing plate; 602. Adjustment plate;

[0034] 7. Lower conveyor mechanism; 701. Lower feed end pulley; 702. Lower discharge end pulley; 703. Lower conveyor belt;

[0035] 8. Discharge mechanism; 801. Discharge cylinder; 802. Discharge chute; 803. Dividing cylinder; 804. Dividing plate; 805. Dividing hole; 806. Dividing pipe;

[0036] 9. Discharge mechanism; 901. Discharge pipe;

[0037] 10. Camera; 11. Fill light;

[0038] 12. Feeding mechanism; 1201. Feeding slider; 1202. Relief groove. Detailed Implementation

[0039] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0040] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to 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 the embodiments of this utility model.

[0041] In this embodiment of the invention, 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 indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0042] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0043] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0044] Example:

[0045] Reference Figures 1-6 As shown, a visual inspection device for the appearance of a primary lithium battery cover assembly includes a base plate 1, a support plate 2 on the base plate 1, a power mechanism 3, a feeding mechanism 12, an upper conveying mechanism 4, a lower conveying mechanism 7, a discharge mechanism 8, and a discharging mechanism 9 on the support plate 2. Along the conveying direction of the upper conveying mechanism 4, the support plate 2 is provided with a first visual imaging detection component 5 for detecting the outer surface of the cover and a second visual imaging detection component 6 for detecting the core rod. Along the conveying direction of the lower conveying mechanism 7, a third visual imaging detection component is provided for detecting the inner surface of the cover. Both the upper conveying mechanism 4 and the lower conveying mechanism 7 are horizontally arranged double-belt conveying mechanisms. The output diameter of the upper conveying mechanism 4 is larger than the input diameter, and the input end of the lower conveying mechanism 7 is tangent to the output end of the upper conveying mechanism 4. The side of the discharge end of the upper conveying mechanism 4 is provided with an arc-shaped protective plate to prevent the primary lithium battery cover from falling off. The power mechanism 3 is connected to the upper conveying mechanism 4 and the lower conveying mechanism 7 via power transmission.

[0046] The power mechanism 3 drives the upper conveying mechanism 4 and the lower conveying mechanism 7 to rotate, placing the primary lithium battery core column downwards on the feeding mechanism 12. The feeding mechanism 12 then transports the cover assembly to the upper conveying mechanism 4. The cover assembly passes sequentially through the upper conveying mechanism 4 to the first visual imaging detection component 5 and the second visual imaging detection component 6, which respectively detect the outer surface of the cover plate and the core column. After the cover assembly is detected, it continues to move with the upper conveying mechanism 4, passing through the discharge end of the upper conveying mechanism 4. An arc-shaped guard plate prevents the cover assembly from falling off the upper conveying mechanism 4. The cover assembly rotates with the output end of the upper conveying mechanism 4. When it reaches directly above the lower conveying mechanism 7, it falls from the upper conveying mechanism 4 to the lower conveying mechanism 7. At this time, the cover assembly turns so that the core column is facing upwards. The cover assembly moves with the lower conveying mechanism 7 and reaches the third visual imaging detection component, which performs visual imaging detection on the inner surface of the cover plate. After the detection is completed, qualified products are collected by the discharge mechanism 8, while unqualified products are collected by the discharge mechanism 9.

[0047] The feeding mechanism 12 includes a feeding slider 1201. The top surface of the feeding slider 1201 is an inclined surface, and the height of one end adjacent to the upper conveying mechanism 4 is lower than that of the other end. The top surface of the feeding slider 1201 is provided with a clearance groove 1202.

[0048] The clearance groove 1202 on the feeding slider 1201 facilitates the passage of the core column, so that the core column of the primary lithium battery cover assembly is placed face down on the feeding slider 1201. The top surface of the feeding slider 1201 is an inclined surface, so that the cover assembly slides along the top surface of the feeding slider 1201 to the feeding conveying mechanism, while the core column slides along the clearance groove 1202, ensuring the stability of the cover assembly sliding and preventing the cover assembly from falling off the feeding slider 1201.

[0049] The upper conveying mechanism 4 includes an upper feed end pulley 401, an upper discharge end pulley 402, and two upper conveying belts 403 connecting the upper feed end pulley 401 and the upper discharge end pulley 402. The diameter of the upper discharge end pulley 402 is smaller than that of the upper discharge end pulley 402, and the top side heights of the upper feed end pulley 401 and the upper discharge end pulley 402 are the same. Both the upper feed end pulley 401 and the upper discharge end pulley 402 are double pulleys. A gap 404 is left between the two upper conveying belts 403 for the core rod to pass through. Both the upper feed end pulley 401 and the upper discharge end pulley 402 are rotatably mounted on the support plate 2 via a rotating shaft.

[0050] The top sides of the upper feed end wheel 401 and the upper discharge end wheel 402 are at the same height, ensuring that the feed belt on the top surface of the upper conveyor mechanism 4 remains horizontal, and ensuring that the cover assembly can move with the upper conveyor mechanism 4 without sliding on the upper conveyor belt 403. This would prevent the cover assembly from accurately stopping at the detection position of the first visual imaging detection component 5 and the second visual imaging detection component 6, resulting in missed detection. The gap 404 between the two upper belts allows the core column to pass through, and at the same time facilitates the second visual imaging detection component 6 to detect the core column.

[0051] The diameter of the upper discharge end wheel 402 is larger than that of the upper feed end wheel 401, ensuring that the upper discharge end wheel 402 can be adjacent to the lower conveying mechanism 7. This ensures that the cover assembly can fall stably from the upper discharge end wheel 402 onto the lower conveying mechanism 7. At the same time, when the cover assembly falls onto the lower conveying mechanism 7, the upper conveyor belt 403 will not affect the stability of the cover assembly on the lower conveying mechanism 7, nor will it obstruct the cover plate and affect the third vision imaging detection component's detection of the inner surface of the cover plate.

[0052] The lower conveying mechanism 7 includes a lower feed end wheel 701, a lower discharge end wheel 702, and two lower conveying belts 703 connecting the lower feed end wheel 701 and the lower discharge end wheel 702. The lower feed end wheel 701 and the lower discharge end wheel 702 have the same diameter, and their central axes are at the same height. The lower conveying belts 703 are tangent to the upper discharge end wheel 402. Both the lower feed end wheel 701 and the lower discharge end wheel 702 are rotatably mounted on the support plate 2 via a rotating shaft.

[0053] The lower feed end wheel 701 and the lower discharge end wheel 702 have the same diameter and their central axes are at the same height, ensuring that the lower feed belt is horizontal, thereby ensuring the stability of the cover assembly on the lower conveyor belt 703. The cover assembly can move with the lower conveyor belt 703, ensuring that the cover assembly can stop at the detection position of the third vision imaging detection component and that no missed detection will occur.

[0054] The first visual imaging detection component 5 includes a mounting base and a camera 10 and a fill light 11 fixed on the mounting base. There are 5 sets of cameras 10, of which 4 cameras 10 are evenly distributed in a ring, and another set of cameras 10 is set above the center of the camera.

[0055] The mounting base includes a positioning base 501, an adjusting plate 502, and a fixing base 503. The positioning base 501 includes a positioning plate 50102. Two clamping plates 50101 are provided on one side of the positioning plate 50102. Semi-circular clamping grooves are provided on the adjacent surfaces of the two clamping plates 50101. A positioning shaft 50103 and a positioning hole are provided on the other symmetrical side of the positioning plate 50102.

[0056] The steering plate 502 has an "L" shaped structure. One side plate is rotatably mounted on the positioning shaft 50103. The side plate is provided with an arc-shaped positioning groove that matches the positioning hole. The circle of the arc-shaped positioning groove is concentric with the positioning shaft 50103. The other side plate of the steering plate 502 is fixedly mounted with a fixing seat 503.

[0057] The mounting base 503 includes a mounting block 50301, a support block 50302 on the mounting block 50301, a limiting groove on the support block 50302, the camera 10 is fitted in the limiting groove, the support block 50302 is also provided with a pressure plate 50303 that cooperates with the limiting groove, one side of the mounting block 50301 is also provided with a mounting plate 50304, the supplementary light 11 is provided on the mounting plate 50304, and the mounting plate 50304 is also provided with a through hole, through which the lens end of the camera 10 passes.

[0058] Four sets of cameras 10 evenly distributed in a ring are used to perform full-range visual imaging inspection of the outer surface of the cover plate. The top set of cameras 10 can detect the injection holes on the cover plate and the verticality of the core column.

[0059] The supplementary light 11 enhances the lighting and shadow effects of the image, making it easier to identify defects.

[0060] The semi-circular clamping grooves between the two clamping plates 50101 cooperate to lock and fix the clamping plates 50101 onto the tubular support column, thereby fixing the position of the positioning plate 50102. The positioning plate 50102 is rotatably mounted on the positioning plate 50102. The adjusting plate 502 can rotate around the positioning shaft 50103. When it rotates to a suitable angle, it is bolted through the positioning hole and the arc-shaped positioning groove, and then locked with a nut, thereby fixing the angle of the adjusting plate 502. The fixing seat 503 is installed on the adjusting plate 502, thereby fixing the angle of the fixing seat 503. The camera 10 is placed in the limiting groove on the support block 50302, and then the pressure plate 50303 presses the camera 10 to fix it on the support block 50302, thereby fixing the camera 10. The fill light 11 is fixed on the mounting plate 50304, and the camera 10 passes through the through hole on the mounting plate 50304. On the one hand, the camera 10 can be positioned to make the position and angle of the camera 10 more stable. On the other hand, it ensures that the position of the fill light 11 corresponds to that of the camera 10, and the fill light 11 can provide supplementary lighting to the shooting position to improve the imaging effect.

[0061] The second visual imaging detection component 6 includes a fixed plate 601, two adjusting plates 602, a fixed base 503 mounted on the adjusting plate 602, a camera 10 mounted on the fixed base 503, and a reflector corresponding to the camera 10. One end of the fixed plate 601 is fixed to the support plate 2. The fixed plate 601 is provided with multiple first connecting holes, and the adjusting plate 602 is provided with multiple second connecting holes. The adjusting plate 602 is fixedly connected by bolts through the first connecting holes and the second connecting holes. The two adjusting plates 602 are symmetrically arranged on the fixed plate 601, and the included angle between the two adjusting plates 602 is 45° to 60°. The reflector is fixed on the support plate 2 and its position corresponds to that of the camera 10, and it is used in conjunction with the camera 10.

[0062] By adjusting the mating position of the first connecting hole on the fixed plate 601 and the second connecting hole on the adjusting plate 602, the fixed position of the adjusting plate 602 on the fixed plate 601 can be adjusted, thereby adjusting the position of the camera 10. This facilitates the camera 10's detection of the cover assembly. The included angle of the adjusting plate 602 is 45° to 60°, ensuring that the curvature of the core column can be detected from different angles. This avoids the core column appearing straight from one angle while only showing a curved shape from other angles, ensuring detection accuracy. Due to the small diameter of the core column, the reflector can better reflect the image's light and texture, highlighting the core column body and facilitating core column identification in character imaging, thus improving detection accuracy.

[0063] The third vision imaging detection component includes a mounting base and cameras 10 and supplementary lights 11 fixed on the mounting base. There are 5 sets of cameras 10, of which 4 cameras 10 are evenly distributed in a ring, and another set of cameras 10 is set above the center of the ring.

[0064] Similar to the first visual imaging detection component 5, the inner side of the cover plate is inspected from all angles by four sets of cameras 10, while the injection hole is inspected by the top camera 10.

[0065] The power mechanism 3 includes a servo motor 301. The output shaft of the servo motor 301 is provided with a drive gear 302. The drive gear 302 meshes with a first driven gear 303. The first driven gear 303 meshes with a second driven gear 304. The first driven gear 303 shares the same shaft with the lower discharge end wheel 702. The shaft of the second driven gear 304 is provided with a first pulley 305. The shaft of the upper feed end wheel 401 is provided with a second pulley 306. The first pulley 305 and the second pulley 306 are connected by a belt.

[0066] The servo motor 301 drives the drive gear 302 to rotate, which in turn drives the first driven gear 303 and the second driven gear 304 to rotate. The first driven gear 303 rotates in the opposite direction, while the second driven gear 304 rotates in the same direction as the drive gear 302. The first driven gear 303 and the lower discharge wheel 702 are located on the same shaft, which in turn drives the lower discharge wheel 702 to rotate in the opposite direction. The upper feed wheel 401 is relatively high, so it is driven by the second pulley 306 and the first pulley 305. The second driven gear 304 drives the first pulley 305 to rotate, which in turn drives the second pulley 306 to rotate, thereby driving the upper feed wheel 401 to rotate. Moreover, the rotation direction of the upper feed wheel 401 is the same as the rotation direction of the second driven gear 304 and opposite to the rotation direction of the lower discharge wheel 702. This makes the rotation directions of the upper conveying mechanism 4 and the lower conveying mechanism 7 opposite, allowing the lower conveying mechanism 7 to be directly located below the upper conveying mechanism 4, saving space.

[0067] The discharge mechanism 8 includes a discharge component and a distribution component. The discharge component includes a discharge cylinder 801 and a discharge chute 802. The discharge cylinder 801 is located on the support plate 2 at the position corresponding to the discharge end of the lower conveying mechanism 7. The discharge chute 802 is inclinedly arranged on the base plate 1, and the higher end of the horizontal position corresponds to the discharge cylinder 801. The distribution component includes a distribution cylinder 803 and a distribution plate 804. The distribution cylinder 803 is located on one side of the base plate 1. The distribution plate 804 is provided on the output shaft of the distribution cylinder 803. The distribution plate 804 has two distribution holes 805, which cooperate with the discharge chute 802. The distribution plate 804 has two distribution pipes 806 at the positions corresponding to the distribution holes 805.

[0068] The qualified cover assembly is pushed off the lower conveyor belt 703 of the lower conveyor mechanism 7 by the discharge cylinder 801 and falls into the discharge chute 802. The cover assembly slides along the material distribution component of the discharge chute 802, passes through the material distribution hole 805 on the material distribution plate 804 and enters the material distribution pipe 806. It is then transported to the collection point by the material distribution pipe 806. When the collection point corresponding to one material distribution pipe 806 is full, the material distribution cylinder 803 makes the position of another material distribution hole 805 correspond to the material distribution chute, so that the cover assembly enters another material distribution pipe 806 through the other material distribution hole 805 and reaches another collection point.

[0069] The discharge mechanism 9 includes a discharge pipe 901, which is located at the end of the discharge end of the lower conveying mechanism 7.

[0070] The unqualified cover assembly will not be pushed out of the lower conveyor belt 703 by the discharge cylinder 801. Therefore, the unqualified cover assembly will continue to move with the lower conveyor belt 703. After reaching the output end of the lower conveyor assembly, it will fall into the discharge pipe and be transported to the waste collection point by the discharge pipe 901 for unified collection and processing.

[0071] In use, the servo motor 301 drives the drive wheel to rotate counterclockwise, the first driven gear 303 rotates clockwise, the second driven gear 304 rotates counterclockwise, the first driven gear 303 drives the lower output wheel to rotate clockwise, and thus drives the lower conveyor belt 703 to rotate clockwise; the second driven gear 304 drives the first pulley 305 and the second pulley 306 to rotate counterclockwise, thus driving the upper conveyor wheel to rotate counterclockwise, and thus driving the upper conveyor belt 403 to rotate counterclockwise.

[0072] The worker places the lithium battery cover assembly with the core column facing down on the feeding slider 1201. The core column is placed in the relief groove 1202. The cover assembly slides along the upper surface of the feeding slider 1201 to the feeding end of the upper conveyor mechanism 4. Under the action of the upper conveyor belt 403, the cover assembly moves onto the upper conveyor belt 403 and rotates with it. The core column is located in the gap 404 between the two upper conveyor belts 403. When it reaches the position of the first visual imaging detection component 5, the servo motor 301 stops rotating, causing the cover assembly to stop at the first visual imaging component. The detection component 5 detects the position by using four sets of circularly arranged cameras 10 to perform a comprehensive inspection of the outer surface of the cover plate of the cover assembly. A top-mounted camera 10 inspects the injection holes on the cover plate. After inspection, the servo motor 301 continues to rotate, causing the cover assembly to continue moving with the upper conveyor belt 403. When it reaches the position of the second visual imaging detection component 6, the servo motor 301 stops. Two sets of cameras 10 then inspect the curvature of the core column at two angles. After inspection, the servo motor 301 continues to rotate. When the cover assembly reaches the upper output wheel of the upper conveyor mechanism 4, it moves from an arc... The protective plate presses the cover assembly to prevent it from falling off the output wheel. When the cover assembly rotates from the top to the bottom of the upper output wheel, the arc-shaped protective plate stops pressing the cover assembly, and the cover assembly falls off the upper output wheel onto the lower conveyor belt 703. The lower conveyor belt 703 rotates clockwise. After rotating to the third vision imaging detection component, the servo motor 301 stops rotating, causing the cover assembly to stop at the position of the third vision imaging detection component. The inner surface of the cover plate of the cover assembly is detected by four sets of circularly arranged cameras 10, and the verticality of the core column is detected by one set of cameras 10 at the top. After the detection is completed... The cover assembly continues to move with the lower conveyor belt 703. If it is a qualified product, after reaching the discharge mechanism 8, the discharge cylinder 801 pushes the cover assembly out of the lower conveyor belt 703. The cover assembly falls from the lower conveyor belt 703 into the discharge chute 802, slides from the discharge chute 802 into the discharge hole, enters the discharge pipe, and finally reaches the qualified product collection point. If it is a non-qualified product, the discharge cylinder 801 does not act on the cover assembly. The cover assembly continues to move with the lower conveyor belt 703 to the lower discharge end wheel 702, falls into the discharge pipe 901, and is then transported by the discharge pipe 901 to the waste collection point.

[0073] In practical use, the servo motor 301, camera 10, ejector cylinder and dispensing cylinder 803 are all controlled by a single control system, enabling the detection device to operate automatically and improve work efficiency.

[0074] Guide wheels are installed on the support plate 2 at positions corresponding to the upper conveyor belt 403 and the lower conveyor belt 703 to improve the stability of the upper conveyor belt 403 and the lower conveyor belt 703 when rotating, prevent the upper conveyor belt 403 and the lower conveyor belt 703 from shaking, causing the cover assembly to fall off, and ensure the normal operation of the inspection.

[0075] A structural reinforcement plate is installed on one side of the support plate 2. Since multiple devices are installed on the support plate 2, this prevents the support plate 2 from shaking, improves the stability of the support plate 2, and prevents the upper conveyor belt 403 and the lower conveyor belt 703 from shaking due to the support plate 2 shaking, thereby preventing the cover assembly from falling off and further ensuring the normal operation of the inspection.

[0076] Camera 10 adopts a CCD industrial camera 10 to improve the accuracy of detection.

[0077] The detection device of this utility model can automatically detect appearance defects of the cover plate and core of a primary lithium battery cover assembly, perpendicularity of the core and cover plate, whether the injection hole is open, and defects of the insulating glass on the cover plate. In actual production use, it can reach 8,000 pieces / hour, which greatly improves the detection efficiency, reduces labor costs, and ensures the accuracy of detection.

[0078] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A visual inspection device for the appearance of a primary lithium battery cover assembly, characterized in that, The device includes a base plate, on which a support plate is provided. The support plate is equipped with a power mechanism, a feeding mechanism, an upper conveying mechanism, a lower conveying mechanism, a discharge mechanism, and a unloading mechanism. Along the conveying direction of the upper conveying mechanism, the support plate is provided with a first visual imaging detection component for detecting the outer surface of the cover plate and a second visual imaging detection component for detecting the core rod. Along the conveying direction of the lower conveying mechanism, a third visual imaging detection component is provided for detecting the inner surface of the cover plate. Both the upper and lower conveying mechanisms are horizontally arranged double-belt conveying mechanisms. The output diameter of the upper conveying mechanism is larger than the input diameter. The input end of the lower conveying mechanism is tangent to the output end of the upper conveying mechanism. The side of the discharge end of the upper conveying mechanism is provided with an arc-shaped protective plate to prevent the primary lithium battery cover from falling off. The power mechanism is connected to the upper and lower conveying mechanisms via power transmission.

2. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The feeding mechanism includes a feeding slider. The top surface of the feeding slider is an inclined surface, and the height of one end adjacent to the upper conveying mechanism is lower than that of the other end. The top surface of the feeding slider is provided with a clearance groove.

3. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The upper conveying mechanism includes an upper feed end pulley, an upper discharge end pulley, and two upper conveyor belts connecting the upper feed end pulley and the upper discharge end pulley. The diameter of the upper discharge end pulley is smaller than that of the upper discharge end pulley, and the top side heights of the upper feed end pulley and the upper discharge end pulley are the same. Both the upper feed end pulley and the upper discharge end pulley are double pulleys, and a gap is left between the two upper conveyor belts for the core rod to pass through. Both the upper feed end pulley and the upper discharge end pulley are rotatably mounted on the support plate via a rotating shaft.

4. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 3, characterized in that, The lower conveying mechanism includes a lower feed end wheel, a lower discharge end wheel, and two lower conveyor belts connecting the lower feed end wheel and the lower discharge end wheel. The lower feed end wheel and the lower discharge end wheel have the same diameter, and their central axes are at the same height. The lower conveyor belts are tangent to the upper discharge end wheel. Both the lower feed end wheel and the lower discharge end wheel are rotatably mounted on the support plate via a rotating shaft.

5. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The first visual imaging detection component includes a mounting base and a camera and a fill light fixed on the mounting base. There are 5 sets of cameras, of which 4 cameras are evenly distributed in a ring, and another set of cameras is arranged above the center of the ring. The mounting base includes a positioning base, a steering plate, and a fixing base. The positioning base includes a positioning plate. One side of the positioning plate is provided with two clamping plates. The adjacent surfaces of the two clamping plates are provided with semi-circular clamping grooves. The other symmetrical side of the positioning plate is provided with a positioning shaft and a positioning hole. The steering plate has an "L" shaped structure, with one side plate rotatably mounted on the positioning shaft. The side plate is provided with an arc-shaped positioning groove that matches the positioning hole. The circle of the arc-shaped positioning groove is concentric with the positioning shaft. A fixing seat is fixedly mounted on the other side plate of the steering plate. The mounting base includes a fixing block, a support block on the fixing block, a limiting groove on the support block, the camera being fitted into the limiting groove, a pressure plate on the support block that cooperates with the limiting groove, a mounting plate on one side of the fixing block, a supplementary light on the mounting plate, and a through hole on the mounting plate through which the lens end of the camera passes.

6. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The second visual imaging detection component includes a fixed plate, two adjusting plates, a fixed base mounted on the adjusting plates, a camera mounted on the fixed base, and a reflector corresponding to the camera. One end of the fixed plate is fixed to a support plate. The fixed plate has multiple first connecting holes, and the adjusting plates have multiple second connecting holes. The adjusting plates are fixed together by bolts through the first and second connecting holes. The two adjusting plates are symmetrically arranged on the fixed plate, and the included angle between the two adjusting plates is 45°~60°. The reflector is fixed on the support plate and its position corresponds to that of the camera, and it is used in conjunction with the camera.

7. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The third vision imaging detection component includes a mounting base and cameras and fill lights fixed on the mounting base. There are 5 sets of cameras, of which 4 cameras are evenly distributed in a ring, and another set of cameras is set above the center of the ring.

8. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 4, characterized in that, The power mechanism includes a servo motor, and the output shaft of the servo motor is provided with a drive gear. The drive gear meshes with a first driven gear, and the first driven gear meshes with a second driven gear. The first driven gear shares the same shaft with the lower discharge end wheel. The shaft of the second driven gear is provided with a first pulley, and the shaft of the upper feed end wheel is provided with a second pulley. The first pulley and the second pulley are connected by a belt.

9. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The discharge mechanism includes a discharge assembly and a distribution assembly. The discharge assembly includes a discharge cylinder and a discharge chute. The discharge cylinder is located on the support plate at the discharge end of the lower conveying mechanism. The discharge chute is inclinedly arranged on the base plate, with its higher horizontal end corresponding to the discharge cylinder. The distribution assembly includes a distribution cylinder and a distribution plate. The distribution cylinder is located on one side of the base plate. The distribution plate is provided on the output shaft of the distribution cylinder. The distribution plate has two distribution holes, which cooperate with the discharge chute. Two distribution pipes are provided on the distribution plate at the positions corresponding to the distribution holes.

10. The visual inspection device for the appearance of a primary lithium battery cover assembly according to claim 1, characterized in that, The discharge mechanism includes a discharge pipe, which is located at the end of the discharge end of the lower conveying mechanism.

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