Automatic detection device for new energy anode collector plate based on machine vision

Abstract

The invention discloses an automatic detection device for a new energy anode collector plate based on machine vision, and relates to the field of battery detection devices. The invention discloses an automatic detection device for a new energy anode collector plate based on machine vision. The automatic detection device comprises an automatic feeding module, a detection module, a discharging and basketing module and an in-machine logistics line which work cooperatively in sequence, according to the invention, the automatic feeding module, the detection module and the discharging basket loading module are integrated, and cooperative operation of parts such as a feeding drawstring, a visual positioning lamp box, a spider robot, a deoiling station, a double-detection station, a double-rotor discharging basket loading manipulator and the like is used; the whole process of automatic feeding, accurate positioning and placing, oil stain removal, appearance defect detection, automatic sorting of qualified and defective products, unified basket loading and automatic discharging in the full basket of the cylindrical battery positive pole collector plates is integrated and automated.

Description

Technical Field

[0001] This invention belongs to the field of battery testing device technology, specifically, it relates to an automated testing device for the positive electrode current collector of new energy based on machine vision. Background Technology

[0002] As the core conductive component of the cylindrical battery, the positive electrode current collector is tested and loaded into baskets in a long-term independent operation during the production process.

[0003] The existing model relies heavily on manual inspection, manual basket loading, or separate operation of inspection equipment and basket loading equipment. This not only has problems such as low efficiency, high rate of missed inspection, and easy secondary damage to products, but also the need for manual transfer and connection of separate equipment leads to long process time and slow production cycle, which cannot meet the needs of high-speed production lines.

[0004] Meanwhile, the lack of automatic sorting function for defective products requires additional manual screening, which further reduces production efficiency. Currently, there is no integrated equipment in the industry that integrates automatic feeding, defect detection of the shunting tray, sorting of good products, automatic basket loading, and collection of defective products, making it difficult to solve the above-mentioned production pain points. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a battery testing device that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] An automated inspection device for positive electrode current collectors in new energy sources based on machine vision, comprising:

[0008] The automatic feeding module, detection module, unloading and basket loading module, and internal logistics line of the machine work together in sequence;

[0009] The automatic feeding module is used to receive the material from the punch press and complete the positioning and placement of the material.

[0010] The detection module is used for oil stain removal, defect detection, and sorting of products;

[0011] The feeding and loading module is used to uniformly orient qualified products toward the loading basket and convey them out.

[0012] The automatic feeding module, detection module, and unloading and basket loading module are integrated and connected through the internal logistics line of the machine.

[0013] Furthermore, a tray carrier for displaying inspection-free products;

[0014] The automatic feeding module includes a feeding conveyor belt, a vision positioning light box, a vision system, and a spider robot;

[0015] The vision system works in conjunction with the vision positioning lightbox to locate the products on the feed conveyor belt and feeds back the position information to the spider robot. After receiving the position information, the spider robot grabs the products and places them onto the inspection-free product tray carrier.

[0016] Furthermore, random checks were conducted on OK tray containers;

[0017] The detection module includes a sampling station mobile carrier, an oil removal station, a first detection station, a second detection station, an OK / NG sorting robot, and an NG buffer station.

[0018] The spider robot picks up the product from the feed conveyor and moves it to the sampling inspection station moving carrier. The sampling inspection station moving carrier sequentially moves the product through the degreasing station to remove oil stains, and through the inspection station 1 and inspection station 2 to perform appearance defect inspection. The OK / NG sorting robot transfers the qualified products to the OK sampling tray carrier and the unqualified products to the NG buffer station.

[0019] Furthermore, the appearance defect detection includes scratch, dent, burr, missing material, and color difference detection.

[0020] Furthermore, the unloading and loading module includes an unloading and loading robot, a basket positioning platform, and a full-basket handling robot;

[0021] The unloading and loading robot adopts a dual-motor plus electric gripper structure. Its first motor is used to uniformly face the products in the inspection-free product tray carrier to the subsequent loading basket, and the second motor is used to clamp the qualified products in the inspection-OK tray carrier to the material basket on the material basket positioning platform. The full basket handling robot is used to transport the material basket full of products to the logistics line inside the machine and deliver it out of the machine.

[0022] Furthermore, the vision system collects product image information through a visual positioning lightbox, which can accurately identify the orientation of the positive current collector of the cylindrical battery, ensuring the consistency of product placement and subsequent basket loading, and avoiding assembly and use affected by product orientation errors.

[0023] Furthermore, after receiving the position information from the visual positioning lightbox, the spider robot grabs the products on the feeding conveyor belt and places them into the inspection-free product tray carrier, thus completing the orderly traying of the products.

[0024] Furthermore, the material basket positioning platform is used to accurately position the material baskets used for loading, ensuring that the clamping and loading actions of the material loading robot are accurate and error-free, and avoiding misalignment of the products when loading them into the baskets.

[0025] Furthermore, the spider robot grabs at least three products from the feed conveyor belt and moves them to the sampling inspection station mobile carrier every minute.

[0026] Furthermore, the operation trigger condition of the full basket handling robot is that the basket on the basket positioning platform is full of products. After triggering, it automatically connects to the logistics line inside the machine to complete the full basket transfer.

[0027] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: By integrating the automatic feeding module, detection module and unloading basket module, and relying on the collaborative operation of components such as the feeding conveyor belt, visual positioning light box, spider robot, degreasing station, dual detection station, and dual-moving unloading basket robot, the present invention realizes the fully integrated automated operation of the cylindrical battery positive electrode current collector, from automatic feeding, precise positioning and tray placement, oil stain removal, appearance defect detection, automatic sorting of qualified and defective products to uniform orientation basket loading and automatic unloading when the basket is full. This effectively reduces manual intervention, not only controlling the appearance defect detection miss rate to ≤0.1% and increasing the product qualification rate to ≥99.9%, but also achieving a production efficiency of ≥120PPM, significantly improving detection accuracy and production cycle, reducing production costs, and solving the problems of poor process connection, easy product damage, and cumbersome defective product sorting in the prior art, perfectly adapting to the production needs of high-speed production lines. Attached Figure Description

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic diagram of the main structure of an automated detection device for a new energy positive electrode current collector based on machine vision proposed in this invention.

[0030] Figure 2 This invention proposes an automated inspection device for positive electrode current collectors of new energy sources based on machine vision. Figure 1 A schematic diagram of the structure of part A;

[0031] Figure 3 This invention proposes an automated inspection device for positive electrode current collectors of new energy sources based on machine vision. Figure 1 A structural diagram of section B;

[0032] Figure 4 This invention presents a schematic diagram of the basket loading structure for inspection-free products in an automated inspection device for new energy positive electrode current collectors based on machine vision. Figure 1 ;

[0033] Figure 5 This invention presents a schematic diagram of the basket loading structure for inspection-free products in an automated inspection device for new energy positive electrode current collectors based on machine vision. Figure 2 ;

[0034] Figure 6 This invention proposes an automated inspection device for positive electrode current collectors of new energy sources based on machine vision. Figure 5 A structural diagram of section C;

[0035] Figure 7 This is a schematic diagram of a spider robot picking up materials in an automated detection device for a new energy positive electrode current collector based on machine vision proposed in this invention.

[0036] Figure 8 This is a schematic diagram of the detection structure in an automated detection device for a new energy positive electrode current collector based on machine vision proposed in this invention.

[0037] Figure 9 This invention proposes an automated inspection device for positive electrode current collectors of new energy sources based on machine vision. Figure 8 A schematic diagram of the structure of part D.

[0038] In the diagram: 1. Feed conveyor belt; 2. Vision positioning light box; 3. Spider robot; 4. Inspection-free product tray carrier; 5. Unloading and loading robot; 6. Basket positioning platform; 7. Full basket handling robot; 8. Internal logistics line; 9. Sampling inspection station moving carrier; 10. OK / NG sorting robot; 11. Inspection station 1; 12. Inspection station 2; 13. Degreasing station; 14. NG buffer station; 15. Inspection OK tray carrier. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] Example: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 An automated inspection device for positive electrode current collectors of new energy based on machine vision includes an automatic feeding module, an inspection module, a loading and unloading module, and an internal logistics line 8 that work in sequence and in coordination. The automatic feeding module is used to receive materials from the punch press and complete the positioning and tray placement. The inspection module is used to remove oil stains, detect defects, and sort the products. The loading and unloading module is used to uniformly orient qualified products towards the basket and transport them out. The automatic feeding module, inspection module, and loading and unloading module are integrated and connected through the internal logistics line 8.

[0041] During use, the automatic feeding module receives the material from the punch press and positions it on the tray. The detection module sequentially completes the degreasing, defect detection and sorting of the products. The unloading and basket loading module uniformly faces the qualified products towards the basket. The internal logistics line 8 connects the three major modules to achieve seamless operation throughout the entire process. This device integrates core functional modules to achieve automated integrated operation, solving pain points such as excessive manual intervention and poor process connection, and is suitable for high-speed production lines.

[0042] Specifically, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the inspection-free product tray carrier 4; the automatic feeding module includes a feeding pull belt 1, a vision positioning light box 2, a vision system and a spider robot 3; the vision system and the vision positioning light box 2 work together to position the products on the feeding pull belt 1 and feed back the position information to the spider robot 3. After receiving the position information, the spider robot 3 grabs the products onto the inspection-free product tray carrier 4.

[0043] When in use, the feeding conveyor belt 1 conveys the punch press material, the vision positioning light box 2 works with the vision system to collect the product position information and feed it back to the spider robot 3. The robot grabs the product and puts it into the inspection-free product tray carrier 4 to achieve precise product positioning and orderly tray placement, ensuring the efficiency and accuracy of the feeding process and laying the foundation for subsequent basket loading.

[0044] Specifically, such as Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the sampling inspection OK tray carrier 15; the inspection module includes a sampling station moving carrier 9, an oil removal station 13, an inspection station 11, an inspection station 2 12, an OK / NG sorting robot 10, and an NG buffer station 14; the spider robot 3 grabs the product from the feed conveyor belt 1 to the sampling station moving carrier 9. The sampling station moving carrier 9 sequentially drives the product through the oil removal station 13 to remove oil stains, and the inspection station 11 and inspection station 2 12 to perform appearance defect inspection. The OK / NG sorting robot 10 transfers the qualified products to the sampling inspection OK tray carrier 15 and transfers the unqualified products to the NG buffer station 14.

[0045] When in use, the spider robot 3 grabs the product on the feed conveyor belt 1 and moves it to the sampling inspection station moving carrier 9. The carrier sequentially drives the product through the degreasing station 13 for degreasing, and the inspection stations 11 / 12 for inspection. The OK / NG sorting robot 10 transfers qualified products to the OK sampling inspection tray carrier 15, and unqualified products to the NG buffer station 14. This is used to complete product sampling inspection, degreasing, inspection and sorting, reduce oil pollution interference, realize automatic separation of defective products and improve inspection accuracy.

[0046] Appearance defect inspection includes scratches, dents, burrs, missing materials, and color difference detection, with a false negative rate of ≤0.1% and a product qualification rate of ≥99.9%.

[0047] Specifically, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the unloading and loading module includes an unloading and loading robot 5, a basket positioning platform 6, and a full-basket transport robot 7. The unloading and loading robot 5 adopts a dual-motor plus electric gripper structure. Its first motor is used to uniformly orient the products in the inspection-free product tray 4 towards the subsequent basket loading, and the second motor is used to grip the qualified products in the inspection-OK tray 15 and place them into the basket on the basket positioning platform 6. The full-basket transport robot 7 is used to transport the full-filled basket to the logistics line 8 inside the machine and deliver it out of the machine.

[0048] At this time, the first mover of the loading and unloading robot 5 will uniformly oriented the products in the inspection-free product tray carrier 4 towards the basket, and the second mover will pick up the products in the inspection-OK tray carrier 15 and transfer them to the basket of the basket positioning platform 6. After the basket is full, the full basket transport robot 7 will transfer it to the logistics line 8 inside the machine for unloading. This is used to realize the efficient and orderly loading of two types of qualified products into the basket, connect the unloading links, and improve the efficiency and standardization of the loading process.

[0049] The vision system collects product image information through the vision positioning light box 2, which can accurately identify the orientation of the positive current collector of the cylindrical battery. This ensures the consistency of the orientation of the product tray and subsequent basket loading, and avoids the impact of product orientation confusion on assembly and use.

[0050] When the above components are in use, the vision positioning light box 2 provides illumination, the vision system collects product images and accurately identifies the front and back orientations, providing an orientation basis for subsequent traying and basket loading, ensuring that the product traying and basket loading orientations are consistent, and avoiding the impact of front and back misalignment on subsequent assembly and use.

[0051] After receiving the position information from the visual positioning light box 2, the spider robot 3 grabs the product on the feeding conveyor belt 1 and puts it into the inspection-free product tray carrier 4, thus completing the orderly traying of the product.

[0052] The aforementioned device is used to ensure the orderly and accurate feeding process, providing support for the smooth progress of subsequent basket loading procedures.

[0053] The material basket positioning platform 6 is used to accurately position the material baskets used for loading, ensuring that the clamping and loading actions of the material loading robot 5 are accurate and error-free, and avoiding misalignment of the products in the baskets.

[0054] Spider robot 3 picks up at least 3 products from feed conveyor belt 1 and moves them to sampling inspection station mobile carrier 9 every minute.

[0055] The operation of the full basket handling robot 7 is triggered when the basket on the basket positioning platform 6 is full of products. After triggering, it automatically connects to the logistics line 8 inside the machine to complete the full basket transfer.

[0056] The specific working steps of this device are as follows:

[0057] Step 1: Automatic feeding and positioning tray operation

[0058] After the front punch press completes the stamping process of the positive electrode current collector of the cylindrical battery, it continuously conveys the product to the feeding belt 1 of the device. The feeding belt 1 starts and smoothly conveys the material to the visual positioning area inside the machine at a stable speed, ensuring that the material is conveyed without jamming or deviation, and providing stable support for subsequent positioning operations.

[0059] When the product enters the visual positioning area, the visual positioning light box 2 automatically turns on, providing a uniform and clear detection lighting environment for the product and avoiding uneven light from affecting the positioning accuracy. At the same time, the vision system starts up, capturing real-time images of the product on the feed conveyor belt 1 through the image acquisition unit, accurately identifying the product's position coordinates and orientation, with an accuracy rate of ≥99.95%, and feeding the above positioning information back to the spider robot 3 in real time.

[0060] After receiving position and orientation information from the vision system, the Spider Robot 3 adjusts the posture of its robotic arm through a preset motion trajectory algorithm to accurately grasp the products on the feed conveyor belt 1. For products identified as being in the opposite direction, the robot simultaneously corrects the orientation during the grasping process. Then, all products are placed in the inspection-free product tray 4 in an orderly manner until the tray is full, completing the loading and traying of a batch of inspection-free products.

[0061] Step 2: Sampling Inspection and Automated Sorting Operation

[0062] During the operation of the device, the spider robot 3 performs sampling inspection at a preset frequency. Every minute, it grabs at least 3 products from the feed conveyor belt 1. The number of products to be sampled can be adjusted adaptively according to the feed flow rate. The sampled products are then accurately placed on the sampling station mobile carrier 9.

[0063] After the sampling inspection station mobile carrier 9 carries the sampled products, it starts to move along the preset track. First, it drives the products into the degreasing station 13. The degreasing station 13 quickly removes the residual stamping oil stains on the product surface through an appropriate degreasing mechanism such as wiping degreasing, avoiding oil stains from obstructing the inspection field of view and reducing the risk of missed inspection from the source.

[0064] After the oil removal process is completed, the products are sequentially moved into inspection station 11 and inspection station 2 12 by the sampling inspection station moving carrier 9. The two inspection stations work together and use machine vision inspection technology to comprehensively inspect the appearance defects of the products. The inspection scope includes scratches, dents, burrs, missing materials, color differences, etc. The inspection process strictly controls the missed inspection rate to ≤0.1% and the product qualification rate to ≥99.9% to ensure that no defective products are missed.

[0065] After the inspection is completed, the inspection system will feed back the OK / NG judgment result to the OK / NG sorting robot 10. The sorting robot will perform sorting actions according to the feedback result: accurately transfer the qualified products to the OK sampling tray 15 and place them in an orderly manner, and transfer the unqualified defective products to the NG buffer station 14 for centralized temporary storage, so as to realize the automatic separation of qualified products and defective products without manual intervention.

[0066] Step 3: Loading and unloading of qualified products into baskets

[0067] When the inspection-free product tray 4 is full or the products in the sample-checked tray 15 reach the preset quantity, the device triggers the unloading and basket-loading command, and the unloading and basket-loading robot 5 starts operation. This robot adopts a dual-motor plus electric gripper structure with clear division of labor:

[0068] The first actuator moves to position 4 of the inspection-free product tray carrier, grabs the inspection-free products in the carrier, and simultaneously adjusts the orientation of the products during the grabbing process to ensure that all products are facing the same direction. Then, it accurately places the products into the empty basket on the material basket positioning platform 6.

[0069] The second actuator moves to position 15 of the sampling OK tray carrier, picks up the qualified sampled products, and places them into the same or corresponding material basket according to the same orientation requirements as the exempted products, thus achieving the classification and orderly loading of the two types of qualified products into the basket.

[0070] The material basket positioning platform 6 accurately positions the material basket throughout the loading process, keeping the positioning error within a very small range. This ensures that the material loading robot 5 can accurately pick up and place the material, preventing misalignment and messy stacking of products.

[0071] When the basket on the basket positioning platform 6 is full of products, a full basket handling signal is triggered. The full basket handling robot 7 responds immediately, grabs the full basket of products, and smoothly transports them to the logistics line 8 inside the machine.

[0072] The internal logistics line 8 starts operating, smoothly conveying full baskets of qualified products out of the machine along the preset channel and transferring them to the subsequent storage or assembly station; at the same time, empty baskets are automatically replenished to the basket positioning platform 6, and the device enters the next round of basket loading cycle, realizing continuous operation of unloading, loading, and unloading.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automated inspection device for positive electrode current collectors in new energy sources based on machine vision, characterized in that, include: The automatic feeding module, detection module, unloading and basket loading module and the internal logistics line of the machine work in sequence (8). The automatic feeding module is used to receive the material from the punch press and complete the positioning and placement of the material. The detection module is used for oil stain removal, defect detection, and sorting of products; The feeding and loading module is used to uniformly orient qualified products toward the loading basket and convey them out. The automatic feeding module, detection module, and unloading and basket loading module are integrated through the internal logistics line (8) of the machine.

2. The automated detection device for new energy positive electrode current collectors based on machine vision according to claim 1, characterized in that, Also includes: Inspection-exempt product display tray (4); The automatic feeding module includes a feeding conveyor belt (1), a vision positioning light box (2), a vision system, and a spider robot (3). The vision system works in conjunction with the vision positioning light box (2) to position the product on the feed conveyor belt (1) and feed back the position information to the spider robot (3). After receiving the position information, the spider robot (3) grabs the product onto the inspection-free product tray carrier (4).

3. The automated detection device for new energy positive electrode current collector based on machine vision according to claim 2, characterized in that, Also includes: Random inspection of OK tray-loading vehicles (15); The detection module includes a sampling station mobile carrier (9), an oil removal station (13), a first detection station (11), a second detection station (12), an OK / NG sorting robot (10), and an NG buffer station (14). The spider robot (3) grabs the product from the feed conveyor (1) to the sampling inspection station moving carrier (9). The sampling inspection station moving carrier (9) sequentially drives the product through the degreasing station (13) to remove oil stains, the first inspection station (11) and the second inspection station (12) to perform appearance defect detection. The OK / NG sorting robot (10) transfers the qualified products to the sampling OK tray carrier (15) and transfers the unqualified products to the NG buffer station (14).

4. The automated detection device for new energy positive electrode current collector based on machine vision according to claim 3, characterized in that, The appearance defect detection includes scratches, dents, burrs, missing material, and color difference detection.

5. The automated detection device for new energy positive electrode current collectors based on machine vision according to claim 4, characterized in that, The unloading and loading module includes an unloading and loading robot (5), a basket positioning platform (6), and a full basket handling robot (7). The unloading and loading robot (5) adopts a dual-motor plus electric gripper structure. Its first motor is used to uniformly face the products in the inspection-free product tray carrier (4) to the subsequent loading basket. The second motor is used to clamp the qualified products in the inspection OK tray carrier (15) to the basket on the basket positioning platform (6). The full basket handling robot (7) is used to transport the full basket to the logistics line (8) inside the machine and deliver it out of the machine.

6. The automated detection device for new energy positive electrode current collectors based on machine vision according to claim 2, characterized in that, The vision system collects product image information through the vision positioning light box (2), which can accurately identify the positive and negative orientation of the positive current collector of the cylindrical battery, so as to ensure the consistency of the orientation of the product tray and subsequent basket loading.

7. The automated detection device for new energy positive electrode current collector based on machine vision according to claim 2, characterized in that, After receiving the position information fed back by the visual positioning light box (2), the spider robot (3) grabs the product on the feeding conveyor belt (1) and puts it into the inspection-free product tray carrier (4) to complete the orderly traying of the product.

8. The automated detection device for new energy positive electrode current collector based on machine vision according to claim 5, characterized in that, The material basket positioning platform (6) is used to accurately position the material basket for loading, ensuring that the loading and unloading robot (5) can accurately and correctly pick up and load the basket, and avoid misalignment of the product in the basket.

9. The automated detection device for new energy positive electrode current collector based on machine vision according to claim 3, characterized in that, The spider robot (3) grabs at least 3 products from the feed conveyor (1) and moves them to the sampling inspection station mobile carrier (9) every minute.

10. The automated detection device for new energy positive electrode current collectors based on machine vision according to claim 5, characterized in that, The operation trigger condition of the full basket handling robot (7) is that the basket on the basket positioning platform (6) is full of products. After triggering, it automatically connects to the logistics line (8) in the machine to complete the full basket transfer.

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