Lithium battery circuit board test robot

Abstract

The invention discloses a lithium battery circuit board test robot which comprises a visual inspection mechanism installed at the output end of a first conveying belt, and the visual inspection mechanism comprises an industrial camera used for circuit board detection and a turnover mechanism used for product turnover; the testing mechanism and the visual detection mechanism are connected in series through a second conveying belt, and the testing mechanism comprises a detection tool and a mounting and clamping mechanism used for clamping a circuit board; and the fault classification mechanisms are used for classifying and collecting the circuit boards according to the fault conditions of the circuit boards, and the second conveying belt and the third conveying belt are each provided with the multiple fault classification mechanisms. According to the invention, the image processing system carries out various operations on the sampled data to extract the features of the target, the purpose of automatically detecting the front and back surfaces is achieved, different types of fault products are collected, the maintenance efficiency is improved, the rejection rate of the products can be greatly reduced, and the qualification rate is improved.

Description

Technical Field

[0001] This invention relates to the field of circuit board testing technology, and in particular to a lithium battery circuit board testing robot. Background Technology

[0002] With the rapid development of electronic technology and new energy vehicles, the lithium battery technology used in electronic products and new energy vehicles has been improved, increasing the demand for lithium batteries. The cells of lithium batteries are usually soldered to a protective circuit board to protect the lithium battery and improve its safety performance.

[0003] In the production of circuit boards, testing processes need to be inserted into multiple production steps to facilitate timely testing and removal of defective products. After rejecting defective products, qualified products flow into subsequent processes, facilitating assembly and improving the yield rate. Currently, during circuit board testing, boards are transported to testing fixtures via conveyor lines and automatically clamped by robotic arms for functional testing. Qualified boards proceed to the next process, while defective boards are disposed of in a scrap bin. This results in a large variety of scrap items in the bin, increasing the difficulty of later repairs and significantly raising the scrap rate. Furthermore, visual inspection is performed on outgoing products, with requirements for the appearance of some circuit boards. Therefore, product scrap due to appearance issues also significantly impacts the overall product yield. Summary of the Invention

[0004] Based on this, it is necessary to provide a lithium battery circuit board testing robot to address the aforementioned technical problems. This robot uses an image processing system to perform various calculations on the sampled data to extract the characteristics of the target, analyze whether the appearance of the target circuit board is qualified, and screen out obviously defective products. The robot automatically flips the product through a flipping mechanism to perform appearance inspection on the back side, achieving the purpose of automatic front and back inspection. Different types of faulty products are collected and scrapped or repaired according to the severity of the fault. Repair personnel can also perform unified repairs based on faulty products, improving repair efficiency and significantly reducing product scrap rate and increasing pass rate.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A lithium battery circuit board testing robot includes a conveyor belt, which comprises:

[0007] A visual inspection mechanism is installed at the output end of the first conveyor belt. The visual inspection mechanism includes an industrial camera for circuit board inspection and a flipping mechanism for product flipping.

[0008] The testing mechanism and the vision inspection mechanism are connected in series via a two-phase conveyor belt. The testing mechanism includes a testing fixture and a clamping mechanism for mounting circuit boards. A conveyor belt is provided at the output end of the testing fixture.

[0009] The fault classification mechanism is used to classify and collect circuit boards according to their fault conditions. Multiple fault classification mechanisms are provided on both conveyor belt two and conveyor belt three. The fault classification mechanism includes a fault collection box and a screening device.

[0010] As a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, the flipping mechanism includes a clamping frame with a front opening and a control rod horizontally mounted with the clamping frame. A gear is mounted on the control rod, and a ring bevel gear meshes with the lower part of the gear.

[0011] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, the angular velocity of the gear mounted on the control lever changes with the tooth pitch of the ring bevel gear.

[0012] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, a control shaft is vertically arranged in the middle of the annular bevel gear, the top of the control shaft is connected to a control rod, and the control rod and the control shaft are rotatably connected.

[0013] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, a drive motor is installed at the bottom of the control axis, an arc-shaped chamfer is provided at the front end of the clamping frame, the clamping surface of the clamping frame is covered with a flexible pad, and the upper clamping surface of the clamping frame has an arc-shaped structure.

[0014] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, a telescopic cylinder is installed on the clamping frame, and a push plate is installed on the extended end of the telescopic cylinder. The push plate is pushed by the telescopic cylinder to reciprocate along the feeding direction of the clamping frame.

[0015] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, the industrial camera is provided with a mounting base, the mounting base is equipped with a supplementary lighting lamp, and the mounting base is equipped with a lead screw sleeve, the lead screw sleeve being internally threaded to a lead screw.

[0016] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, a slider is fixed on the lead screw sleeve, a limit rail is sleeved on the slider sleeve, and a drive motor is installed at the end of the lead screw.

[0017] As a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, the mounting and clamping mechanism includes a robotic arm for product transfer and a pneumatic suction cup mounted on the front end of the robotic arm. Multiple testing fixtures are provided, and each testing fixture is correspondingly provided with a pneumatic fixing pressure rod.

[0018] In a preferred embodiment of the lithium battery circuit board testing robot provided by the present invention, the screening device includes a telescopic cylinder two, which is installed on the side of the conveyor belt two and the conveyor belt three away from the fault collection box, and a screening push plate is installed at the output end of the telescopic cylinder two.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a lithium battery circuit board testing robot. The circuit board is conveyed to a vision inspection mechanism via conveyor belt one. An industrial camera on the vision inspection mechanism samples the appearance of the circuit board. An image processing system performs various calculations on the sampled data to extract target features, analyze whether the appearance of the target circuit board is qualified, and screen out obviously defective products. Based on product requirements, a flipping mechanism can automatically flip the product to inspect the back side, achieving automatic front and back inspection. The inspected products are then sequentially transferred to conveyor belt two, where a fault classification mechanism classifies and collects defective products. Products that pass the vision inspection are transferred to a testing fixture via a clamping mechanism. The testing fixture, combined with a power supply and load, forms a testing module to test the product's functionality and determine whether it is a good or defective product. The inspected products are then conveyed via conveyor belt three, where a fault classification mechanism on conveyor belt three further classifies them according to fault type, collecting different types of faulty products. These products are then scrapped or repaired based on the severity of the fault. Repair personnel can also perform unified repairs based on the faulty products, improving repair efficiency and significantly reducing product scrap rate and increasing pass rate. Attached Figure Description

[0021] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the pusher plate structure provided by the present invention during pushing;

[0024] Figure 3 This is a schematic diagram of the visual inspection mechanism structure provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the circuit board flipping detection structure provided by the present invention;

[0026] Figure 5 A schematic diagram of the flipping mechanism provided by the present invention;

[0027] Figure 6 A schematic diagram of the industrial camera and lead screw structure provided by the present invention.

[0028] The markings in the diagram are explained as follows:

[0029] 1. Conveyor Belt 1; 2. Conveyor Belt 2; 3. Inspection Fixture; 4. Conveyor Belt 3; 5. Clamping Frame; 6. Industrial Camera; 7. Lead Screw; 8. Gear; 9. Fault Collection Box; 10. Telescopic Cylinder 2; 11. Screening Push Plate; 12. Telescopic Cylinder 1; 13. Push Plate; 14. Circular Bevel Gear; 15. Control Shaft; 16. Control Rod; 17. Supplemental Lighting Lamp; 18. Mounting Base; 19. Lead Screw Sleeve; 20. Slider; 21. Limit Rail. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] As described in the background section, the waste bin contains a wide variety of waste products, making subsequent repairs difficult and increasing the scrap rate. Appearance problems with circuit boards can also lead to product scrapping, affecting the product qualification rate.

[0032] To address this technical problem, the present invention provides a lithium battery circuit board testing robot, which is applied in the field of circuit board testing technology.

[0033] For details, please refer to Figure 1-6 A lithium battery circuit board testing robot includes a conveyor belt 1, which comprises:

[0034] A visual inspection mechanism is installed at the output end of the conveyor belt 1. The visual inspection mechanism includes an industrial camera 6 for circuit board inspection and a flipping mechanism for product flipping.

[0035] The testing mechanism and the vision inspection mechanism are connected in series via a second conveyor belt 2. The testing mechanism includes a testing fixture 3 and a clamping mechanism for mounting circuit boards. A third conveyor belt 4 is provided at the output end of the testing fixture.

[0036] The fault classification mechanism is used to classify and collect circuit boards according to their fault conditions. Multiple fault classification mechanisms are provided on both conveyor belt 2 and conveyor belt 3. The fault classification mechanism includes a fault collection box 9 and a screening device.

[0037] This invention provides a lithium battery circuit board testing robot. The circuit board is conveyed to a vision inspection mechanism via conveyor belt 1. An industrial camera 6 on the vision inspection mechanism samples the appearance of the circuit board. An image processing system performs various calculations on the sampled data to extract target features, analyze whether the appearance of the target circuit board is acceptable, and screen out obviously defective products. Furthermore, according to product requirements, a flipping mechanism can automatically flip the product to inspect the back side, achieving automatic front and back inspection. The inspected products are then sequentially transferred to conveyor belt 2, where a fault classification mechanism is installed to sort defective products. Products are collected and categorized. Products that pass the visual inspection are transferred to inspection fixture 3 via a clamping mechanism. Inspection fixture 3, together with a power supply and load, forms a test module to test the product's functionality and determine whether it is a good or defective product. After inspection, the products are transported via conveyor belt 4 and classified according to the type of fault by a fault classification mechanism located on conveyor belt 4. This allows for the collection of different types of faulty products, which are then scrapped or repaired based on the severity of the fault. Maintenance personnel can also perform unified repairs based on the faulty products, improving maintenance efficiency and significantly reducing product scrap rate and increasing pass rate.

[0038] Machine vision technology converts the captured target into image signals, which are then transmitted to a dedicated image processing system. This system performs various calculations on these signals to extract the target's features, and based on the results, controls the on-site equipment to perform a series of grasping operations. Simultaneously, the vision system also inspects the product surface, filtering out obviously defective products.

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] Example 1

[0043] In this embodiment, please refer to Figure 2 , 4 5. A lithium battery circuit board testing robot includes a conveyor belt 1 and a vision inspection mechanism installed at the output end of the conveyor belt 1. The vision inspection mechanism includes an industrial camera 6 for circuit board inspection and a flipping mechanism for product flipping. The circuit board is conveyed to the vision inspection mechanism via the conveyor belt 1. The appearance of the circuit board is sampled by the industrial camera 6 on the vision inspection mechanism. Various calculations are performed on the sampled data by the image processing system to extract the features of the target, analyze whether the appearance of the target circuit board is qualified, and screen out obviously defective products. The flipping mechanism includes a clamping frame 5 with a front opening and a control rod 16 horizontally installed with the clamping frame 5. The flipping mechanism can automatically flip the product and perform appearance inspection on the back of the product to achieve the purpose of automatic front and back inspection.

[0044] In the embodiments of this application, a gear 8 is mounted on the control lever 16, and a ring bevel gear 14 meshes with the lower part of the gear 8. The product is clamped by the clamping frame 5, and the control lever 16 drives the gear to roll along the ring bevel gear 14, thereby adjusting the rotation of the clamping frame 5 connected to the control lever 16 and controlling the clamping frame 5 to flip over. The angular velocity of the gear 8 mounted on the control lever 16 changes with the tooth pitch of the ring bevel gear 14. The flipping angle of the clamping frame 5 at the flipping position is controlled as needed, and the tooth pitch of the ring bevel gear 14 is adjusted so that the clamping frame 5 is in the front and back positions of the specified position, which is convenient for shooting at a fixed angle by the industrial camera 6.

[0045] Please refer to the following: Figure 1 and 4The testing mechanism and the vision inspection mechanism are connected in series via conveyor belt 2. The testing mechanism includes a testing fixture 3 and a clamping mechanism for mounting circuit boards. A conveyor belt 4 is installed at the output end of the testing fixture. Products that pass the vision inspection are transferred to the testing fixture 3 via the clamping mechanism. The testing fixture 3, together with the power supply and load, forms a testing module to test the functionality of the products and determine whether they are good or defective. The fault classification mechanism is used to classify and collect circuit boards according to their fault conditions. Multiple fault classification mechanisms are installed on both conveyor belt 2 and conveyor belt 4. The fault classification mechanism includes a fault collection box 9 and a screening device. The inspected products are transported via conveyor belt 4 and classified according to the type of fault by the fault classification mechanism located on conveyor belt 4, thereby collecting different types of faulty products.

[0046] Example 2

[0047] The lithium battery circuit board testing robot provided in Example 1 is further optimized in this example, such as... Figure 2 and 4 As shown, a control shaft 15 is vertically arranged in the middle of the annular bevel gear 14. The top of the control shaft 15 is connected to the control rod 16, and the control rod 16 is rotatably connected to the control shaft 15. A drive motor is installed at the bottom of the control shaft 15. The drive motor drives the control shaft 15 to rotate, thereby causing the control rod 16 to swing around the control shaft 15 as the axis, so that the control gear 8 can mesh along the teeth of the annular bevel gear 14. The front end of the clamping frame 5 is provided with an arc-shaped chamfer. The clamping surface of the clamping frame 5 is covered with a flexible pad, and the upper clamping surface of the clamping frame 5 is an arc-shaped structure, which facilitates the clamping and fixing of the circuit board and makes it stable during the flipping process.

[0048] Among them, such as Figure 5 As shown, a telescopic cylinder 12 is installed on the clamping frame 5. A push plate 13 is installed on the extended end of the telescopic cylinder 12. The push plate 13 is pushed by the telescopic cylinder 12 and moves back and forth along the feeding direction of the clamping frame 5. When the circuit board is moved to the second conveyor belt, the push plate 13 is moved by the telescopic cylinder 12, thereby pushing the circuit board onto the second conveyor belt.

[0049] Example 3

[0050] The lithium battery circuit board testing robot provided in Embodiment 1 or 2 is further optimized, such as... Figure 4 and 6As shown, the industrial camera 6 is equipped with a mounting base 18, on which a supplementary lighting lamp 17 is installed. The supplementary lighting lamp 17 provides sufficient illumination for the industrial camera 6. A lead screw sleeve 19 is installed on the mounting base 18, and a lead screw 7 is internally threaded onto the lead screw sleeve 19. A slider 20 is fixed on the lead screw 7, and a limit rail 21 is fitted onto the slider 20. A second drive motor is installed at the end of the lead screw 7. The second drive motor drives the lead screw 7 to rotate, thereby moving the lead screw sleeve 19 and the mounting base 18, thus controlling the position of the industrial camera. It can sample the flipped circuit board, and the limit rail 21 makes it move stably. By adjusting the sampling of the circuit board on different sides of the industrial camera 6, the utilization rate of the industrial camera 6 can be improved.

[0051] Example 4

[0052] The lithium battery circuit board testing robot provided in Example 1 has been further optimized, such as... Figure 1 As shown, the installation clamping mechanism includes a robotic arm for product transfer and a pneumatic suction cup installed at the front end of the robotic arm. Multiple detection fixtures 3 are provided, and each detection fixture 3 is equipped with a corresponding pneumatic fixing pressure rod. The screening device includes a telescopic cylinder 2 10, which is installed on the side of conveyor belt 2 and conveyor belt 3 4 away from the fault collection box 9. A screening push plate 11 is installed at the output end of the telescopic cylinder 2 10. According to different fault types, the telescopic cylinder 2 10 at the corresponding position is controlled to work, and the circuit board is pushed to the corresponding fault collection box 9 for collection through the screening push plate 11.

[0053] The process of using a lithium battery circuit board testing robot provided by this invention is as follows: The circuit board is transported to the vision inspection mechanism via conveyor belt 1. The appearance of the circuit board is sampled by the industrial camera 6 on the vision inspection mechanism. The product can be automatically flipped by the flipping mechanism to inspect the appearance of the back of the product. The inspected products are then transferred to conveyor belt 2. The defective products are classified and collected by the fault classification mechanism installed on conveyor belt 2. Products that pass the inspection by the vision inspection mechanism are transferred to the inspection fixture 3 via the clamping mechanism to test the function of the product and determine whether the product is good or defective. The inspected products are then transported via conveyor belt 4 and classified according to the type of fault by the fault classification mechanism located on conveyor belt 4.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A lithium battery circuit board testing robot, comprising a conveyor belt (1), characterized in that, It includes: A visual inspection mechanism is installed at the output end of the conveyor belt (1). The visual inspection mechanism includes an industrial camera (6) for circuit board inspection and a flipping mechanism for product flipping. The testing mechanism and the visual inspection mechanism are connected in series by a second conveyor belt (2). The testing mechanism includes a testing fixture (3) and a clamping mechanism for mounting circuit boards. A third conveyor belt (4) is provided at the output end of the testing fixture. The fault classification mechanism is used to classify and collect circuit boards according to their fault conditions. Multiple fault classification mechanisms are provided on both conveyor belt two (2) and conveyor belt three (4). The fault classification mechanism includes a fault collection box (9) and a screening device.

2. The lithium battery circuit board testing robot according to claim 1, characterized in that, The flipping mechanism includes a clamping frame (5) with an opening at the front end, and a control rod (16) that is horizontally mounted to the clamping frame (5). A gear (8) is mounted on the control rod (16), and a ring bevel gear (14) meshes with the gear (8) below.

3. The lithium battery circuit board testing robot according to claim 2, characterized in that, The angular velocity of the gear (8) mounted on the control lever (16) changes with the tooth pitch of the ring bevel gear (14).

4. A lithium battery circuit board testing robot according to claim 2, characterized in that, A control shaft (15) is vertically arranged in the middle of the ring bevel gear (14). The top of the control shaft (15) is connected to the control rod (16), and the control rod (16) is rotatably connected to the control shaft (15).

5. A lithium battery circuit board testing robot according to claim 4, characterized in that, The bottom of the control shaft (15) is equipped with a drive motor, the front end of the clamping frame (5) is provided with an arc-shaped chamfer, the clamping surface of the clamping frame (5) is covered with a flexible pad, and the upper clamping surface of the clamping frame (5) is an arc-shaped structure.

6. A lithium battery circuit board testing robot according to claim 5, characterized in that, A telescopic cylinder (12) is installed on the clamping frame (5). A push plate (13) is installed on the extended end of the telescopic cylinder (12). The push plate (13) is pushed by the telescopic cylinder (12) and moves back and forth along the feeding direction of the clamping frame (5).

7. A lithium battery circuit board testing robot according to claim 1 or 5, characterized in that, The industrial camera (6) is provided with a mounting base (18), a supplementary lighting lamp (17) is installed on the mounting base (18), a lead screw sleeve (19) is installed on the mounting base (18), and a lead screw (7) is internally threaded into the lead screw sleeve (19).

8. A lithium battery circuit board testing robot according to claim 7, characterized in that, The lead screw (7) is fitted with a slider (20), the slider (20) is fitted with a limit rail (21), and a drive motor is installed at the end of the lead screw (7).

9. A lithium battery circuit board testing robot according to claim 1, characterized in that, The installation clamping mechanism includes a robotic arm for product transfer and a pneumatic suction cup installed at the front end of the robotic arm. Multiple inspection fixtures (3) are provided, and each inspection fixture (3) is provided with a corresponding pneumatic fixing rod.

10. A lithium battery circuit board testing robot according to claim 1, characterized in that, The screening device includes a telescopic cylinder two (10), which is installed on the side of the conveyor belt two (2) and the conveyor belt three (4) away from the fault collection box (9). A screening push plate (11) is installed at the output end of the telescopic cylinder two (10).

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