Oblique symmetry type detection device and method thereof

Abstract

The invention discloses an oblique symmetry type detection device and method, and belongs to the technical field of battery detection, the oblique symmetry type detection device comprises a rack, and the rack is provided with a feeding mechanism, a feeding conveying mechanism, a detection mechanism, a discharging conveying mechanism and a discharging mechanism which are matched with one another; the detection mechanism is independent double-channel detection and comprises a jig, a first detection mechanism and a second detection mechanism, the first detection mechanism and the second detection mechanism are arranged in parallel, assemblies in the first detection mechanism and assemblies in the second detection mechanism are arranged in an oblique symmetry mode, and bottom laser sensors are arranged between the first detection mechanism and the unloading conveying mechanism and between the second detection mechanism and the unloading conveying mechanism respectively; the detection device is simple in structure, high in automation degree, convenient to use, high in comprehensive detection efficiency and high in detection precision, and the size and layout requirements are well met.

Description

Technical Field

[0001] This invention relates to a testing device for batteries, specifically a symmetrical testing device and method, belonging to the field of battery testing technology. Background Technology

[0002] Currently, batteries are widely used in various industries, and the demand for batteries is increasing, leading to higher and higher levels of battery processing and manufacturing. After battery processing, the battery surface needs to be inspected. Inspection items include battery dimensions, thickness, flange edges, etc., to prevent bulges, dents, cracks, and other defects on the battery surface, which could reduce battery life or even endanger user safety. Comprehensive, automated, and precise inspection is required to ensure inspection quality, production efficiency, and to meet current market demands.

[0003] Currently, patent CN118362038A describes a battery casing inspection device, which includes a frame, a positioning mechanism, an inspection mechanism, and a conveying mechanism. Multiple inspection components are mounted on the frame, and the workpiece conveying mechanism moves the battery casing to be inspected to the inspection area of ​​each inspection component, enabling the inspection of different parts of the battery casing, ensuring the inspection effect, and automating the entire inspection process, greatly improving inspection efficiency. Patent CN119044196A describes an inspection device for inspecting the appearance of battery modules, which includes an inspection device and can perform mechanical inspection of battery modules by setting up a lifting mechanism, a flipping mechanism, and an image acquisition mechanism. The above devices are all single-unit detection devices, which can only detect one material at a time. During the detection process, it is necessary to wait for the previous material to be detected to complete before the next material can be transported. The detection efficiency of materials such as batteries is low. This traditional equipment cannot meet the requirements of high detection speed and quantity. At the same time, battery detection equipment has strict size standards in its design, which limits the layout of the entire process. The detection device in patent CN118362038A has a large footprint and does not make reasonable use of space structure for layout, which may result in situations where size requirements are not met. In addition, multi-faceted high-precision detection can avoid low-quality detection and thus meet market demands. Patent CN119044196A uses an image acquisition mechanism to collect and analyze the appearance of the material, but the detection is not comprehensive enough and the detection accuracy needs to be improved.

[0004] Therefore, developing a skew-symmetric detection device and method that can overcome the above defects has become a technical problem that urgently needs to be solved by those skilled in the art. 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 symmetrical detection device and method. The detection device has a simple structure, a high degree of automation, is easy to use, provides comprehensive and efficient detection, and has high detection accuracy, which well meets the size and layout requirements.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows: A symmetrical detection device includes a frame, on which a feeding mechanism, a feeding conveying mechanism, a detection mechanism, a discharging conveying mechanism, and a discharging mechanism are sequentially arranged in cooperation with each other, wherein: The testing mechanism is a dual-channel independent testing system, comprising a first testing mechanism and a second testing mechanism arranged parallel to each other along the length of the frame. The components in the first testing mechanism are structurally identical to those in the second testing mechanism and are arranged obliquely symmetrically. The first testing mechanism includes a first CCD camera, a first laser sensor, a second CCD camera, a second laser sensor, a camera, a testing and handling assembly, a first conveying fixture, and a second conveying fixture. The first CCD camera and the first laser sensor are suspended upside down above the frame via a first bracket mounted on the frame. The first conveying fixture is located on the frame below the first bracket and supports the first CCD camera and the second laser sensor. The material to be tested is conveyed along its detection area. The second CCD camera, the second laser sensor, and the camera are inverted above the frame via a second bracket set on the frame. A second conveying fixture is located below the second bracket on the frame to carry the material to be tested and convey it along its detection direction. The battery is also carried and conveyed along its detection direction. The conveying path is the detectable area of ​​the detection mechanism. A detection and handling assembly is located between the first and second brackets on the frame to connect the material to be tested on the first conveying fixture and send it to the second conveying fixture. Bottom laser sensors are respectively located between the first and second detection mechanisms and the unloading and conveying mechanism. The material to be tested is transported to the corresponding workstation by the feeding mechanism, and then transported to the testing mechanism for dual-channel testing by the feeding conveyor. After the testing is completed, the material is transported to the unloading mechanism for unloading and packaging by the unloading conveyor.

[0007] The technical solution further defined in this invention is: Furthermore, in the aforementioned oblique symmetrical detection device, a first CCD camera is provided in the middle of the first bracket, the first CCD camera penetrates the first bracket, and a first laser sensor is provided on one side of the first bracket. The first CCD camera and the first laser sensor are respectively facing the first conveying fixture to detect the material to be tested.

[0008] Technical advantages: The first CCD camera and the first laser sensor in this invention are hung upside down on the frame by the first bracket. The upside-down hanging facilitates the detection of the material to be tested on the jig. The first bracket can also be used by the second CCD camera, camera and second laser sensor in the second detection mechanism. It is convenient to use, has a reasonable structural layout and reduces the space occupied.

[0009] In the aforementioned oblique symmetrical detection device, a second CCD camera is provided on the side of the second bracket adjacent to the first laser sensor, and a camera is provided on the side of the second bracket away from the side where the second CCD camera is provided. A second laser sensor is provided at the bottom of the middle part of the second bracket. The second laser sensor includes an upper surface laser sensor and side laser sensors symmetrically arranged on both sides of the upper surface laser sensor, which are used to detect the two sides and the upper surface of the material to be tested. The second CCD camera and the upper surface laser sensor are respectively directed toward the second conveying fixture to detect the material to be tested.

[0010] In terms of technical effect, the second bracket in this invention has a similar function to the first bracket, which facilitates the setting of the detection components and provides a place for the first CCD camera and the first laser sensor in the second detection mechanism, making the overall layout of the detection mechanism reasonable and reducing the space required.

[0011] In the aforementioned oblique symmetrical testing device, the first conveying fixture includes a first movable guide rail fixedly mounted on the frame, a second movable guide rail movably mounted on the first movable guide rail, a first movable seat movably mounted on the second movable guide rail, and a testing platform mounted on the first movable seat. The first movable guide rail is perpendicular to the second movable guide rail, and the testing platform is provided with a fixed seat for placing the material to be tested. The second moving guide rail drives the test material, which is set on the fixed base, to move on the first moving guide rail. The movement path of the test material passes through the detection area of ​​the corresponding component in the detection mechanism in sequence.

[0012] Technical advantages: The first and second detection mechanisms of this invention are each equipped with a movable first conveying fixture. The fixture moves the material to be tested, allowing it to reach the detection area of ​​each detection component in the detection mechanism, thus completing the detection of each component, facilitating detection and improving efficiency.

[0013] In the aforementioned oblique symmetrical detection device, the second conveying fixture includes a left conveying fixture and a right conveying fixture. The left and right conveying fixtures have the same structure and are arranged symmetrically. The left conveying fixture includes a third moving guide rail fixedly mounted on the frame, a fourth moving guide rail movably mounted on the third moving guide rail, a fifth moving guide rail movably mounted on the fourth moving guide rail, a second moving seat movably mounted on the fifth moving guide rail, and a detection platform mounted on the second moving seat. The third moving guide rail is perpendicular to the fourth moving guide rail, and the detection platform is provided with a fixed seat for placing the material to be tested. The fourth moving guide rail drives the test material set on the fixed base to move longitudinally on the third moving guide rail, and the fifth moving guide rail drives the test material to move laterally on the fourth moving guide rail, so that the movement path of the test material is square. The left conveying fixture and the right conveying fixture take turns conveying the test material, and the movement path of the test material passes through the detection area of ​​the component in the corresponding detection mechanism.

[0014] Technical advantages: This invention utilizes a second conveying fixture. For the second CCD camera, second laser sensor, and camera detection components, the second laser sensor needs to simultaneously measure both sides and the top surface. Compared to the first laser sensor's process, which takes longer, the material to be tested after the first laser sensor's detection, or the material fed by the feeding mechanism, is quickly transferred to the second conveying fixture for further testing. The longer detection time of the second laser sensor can prevent the obliquely transported material to be tested. By employing a second conveying fixture composed of a left and a right conveying fixture, while the left conveying fixture carries the material to be tested by the second laser sensor, the right conveying fixture carries the material to be tested after the first laser sensor's detection (or the material fed by the feeding mechanism). After the material on the left conveying fixture is tested, the material on the right conveying fixture is sent to the detection mechanism for testing. This ensures that the material to be tested after the first laser sensor's detection is conveyed in sequence, simultaneously satisfying the second laser sensor's detection requirements. The left and right conveying fixtures alternately transport and test, improving efficiency and ensuring normal operation.

[0015] In the aforementioned oblique symmetrical detection device, the feeding and conveying mechanism includes a material-grabbing mechanical claw and a conveying platform. The conveying platform includes a left conveying platform and a right conveying platform that are symmetrical on the same horizontal line. The conveying directions of the left conveying platform and the right conveying platform are opposite. The material-grabbing mechanical claw picks up the material from the feeding mechanism and places it on the conveying platform. The left conveying platform and the right conveying platform have the same structure, including a conveying guide rail, a conveying base and a placement platform. The conveying guide rail is set along the conveying route, the conveying base is movably installed on the conveying guide rail, and the placement platform is set on the conveying base. The movement direction of the placement platform in the left conveying platform and the right conveying platform is opposite.

[0016] Technically, this invention employs a symmetrically arranged left and right conveying platform. The materials to be tested move in opposite directions on the left and right conveying platforms, allowing two materials to be tested to be placed on the left and right conveying platforms respectively, and then transported to the subsequent testing mechanisms on both sides. This not only improves the efficiency of material feeding and conveying, but also effectively enhances the speed, efficiency, and quantity of testing.

[0017] In the aforementioned oblique symmetrical detection device, the unloading and conveying mechanism includes an unloading mechanical claw and a flipping and transferring module assembly. The unloading mechanical claw is located between the flipping and transferring module assembly and the unloading mechanism. The unloading mechanical claw picks up the material from the flipping and transferring module assembly and places it on the unloading mechanism.

[0018] In the aforementioned oblique symmetrical detection device, an NG collection conveyor belt is also provided on the frame, and the conveyor belt is located on one side of the unloading mechanism.

[0019] In terms of technical benefits, this invention additionally incorporates an NG (Not From a Standard) collection conveyor belt, which facilitates the centralized rejection and recycling of substandard test products, thereby improving efficiency.

[0020] This invention also designs a symmetrical detection method, which specifically includes the following steps: S1. The feeding mechanism delivers the material to be tested to the corresponding workstation for the feeding and conveying mechanism to grab; S2. The feeding and conveying mechanism's gripper simultaneously grasps two pieces of material to be tested and transports them to the conveying platform. One piece of material to be tested is placed on each of the placement platforms of the left and right conveying platforms. The two placement platforms move in opposite directions on the conveying guide rails and are delivered to the designated transfer module carrier for barcode scanning. After the flipping module in the device flips the two pieces of material to be tested by 180°, they are transferred to the corresponding conveying fixtures of the first and second testing mechanisms, respectively, for testing. The first testing mechanism is channel 1, and the second testing mechanism is channel 2. Dual-channel testing is performed simultaneously, specifically as follows: ①Channel 1: The first conveying fixture moves the material to be tested, and the first CCD camera takes pictures of the top of the material to be tested. Channel 2: The second conveyor fixture moves the material to be tested, and the side camera takes pictures of the material to be tested for inspection; ②Channel 1: The first conveying fixture drives the material to be tested to continue moving, and the first laser sensor detects the upper side of the material to be tested; Channel 2: The second conveying fixture continues to move the material to be tested, and the two side laser sensors and one upper surface laser sensor in the second laser sensor detect the two sides and the upper surface of the material to be tested; ③Channel 1: The first conveying fixture continues to move the material to be tested; Channel 2: The second conveyor fixture continues to move the material to be tested, and the second CCD camera on the side and above detects the edge of the material to be tested; ④Channel 1: Product handling, the test material is connected to the first conveyor fixture and sent to the second conveyor fixture by the testing and handling components; Channel 2: Product handling, the test material is connected to the second conveyor fixture and sent to the first conveyor fixture by the testing and handling components; ⑤Channel 1: The second conveying fixture moves the material to be tested, and the second CCD camera on the side above detects the edge of the material to be tested; Channel 2: The first conveying fixture moves the material to be tested, and the first laser sensor on the side above detects the material on the side above the test. ⑥Channel 1: The second conveying fixture drives the material to be tested to continue moving. The two side laser sensors and one upper surface laser sensor in the second laser sensor detect the two sides and the upper surface of the material to be tested. Channel 2: The first conveying fixture moves the material to be tested, and the first CCD camera takes pictures of the top of the material to be tested for detection; ⑦Channel 1: The second conveying fixture moves the material to be tested, and the side camera takes pictures of the material to be tested for detection; Channel 2: Product handling; ⑧Channel 1: Laser movement, detected by bottom laser sensor; Channel 2: Laser movement, detected by bottom laser sensor; ⑨ Products that have passed inspection on channels 1 and 2 are transported to the transfer shaft, where they are flipped by the transfer module; S3. The unloading mechanical claw in the unloading conveyor grabs the flipped product and determines whether it is OK or NG. OK products are put into the unloading mechanism and finally stored in the warehouse. NG products are placed on the NG collection conveyor belt located on one side of the unloading mechanism for recycling.

[0021] As a preferred embodiment of the oblique symmetric detection method of the present invention, the detection mechanism in the device is pre-processed before step S1, specifically as follows: (1) Clean and wipe the first conveying fixture, the second conveying fixture, and the standard block; (2) Place the standard blocks on the first and second conveying fixtures in sequence and perform an inspection operation; (3) If the inspection fails, continue to clean and wipe the jig and the standard block until the inspection passes. Remove the standard block and keep it. Wipe the jig again, switch to normal production mode, and standby to prepare for production.

[0022] Technical benefits: Before operation, the device of this invention performs a pre-operation inspection, which facilitates the detection and testing of each stage of the production process. This allows for the timely identification of problems in the process, such as device malfunctions and deviations in process parameters, enabling prompt correction and preventing any impact on product quality. This ensures normal production and improves efficiency.

[0023] The beneficial effects of this invention are: (1) The testing device for materials such as batteries has strict size standards in its design, which restricts the layout of the entire process. In addition to meeting the size requirements of the equipment, it is also necessary to ensure the testing speed and the number of tests. According to the traditional testing layout, the current device cannot meet these requirements. Therefore, the device of the present invention was designed. The feeding mechanism in the device can transport the material to be tested to the corresponding position. The material to be tested is taken out of the loading tray by the picking mechanical claw, realizing automatic feeding and then sending it to the conveying mechanism for bidirectional conveying to improve efficiency.

[0024] (2) The detection mechanism in this invention is set with two sets of dual-channel and independent detection, each set with a corresponding fixture, so that the two sets are fed at the same time and are detected in opposite order in the corresponding detection mechanism, which further improves the detection efficiency. At the same time, the components in the two detection mechanisms are arranged obliquely and symmetrically in order to better arrange the position relationship of the components, reasonably reduce the footprint, and reduce the overall layout to meet the size standard requirements and process layout requirements of the detection device. Under the premise of ensuring the size requirements, the feeding mechanism and unloading mechanism are combined to greatly improve the efficiency.

[0025] (3) The present invention uses a feeding and conveying mechanism and an unloading and conveying mechanism to pick up, transfer and unload the material to be tested, thereby realizing automated transportation of the testing process, improving efficiency and reducing costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the oblique symmetric detection device according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the testing institution; Figure 3 for Figure 2 Another structural diagram from a different angle; Figure 4 for Figure 2 Schematic diagram of the first support and part of the testing mechanism Figure 1 ; Figure 5 for Figure 2 Schematic diagram of the first support and part of the testing mechanism Figure 2 ; Figure 6 for Figure 2 Schematic diagram of the first support and part of the testing mechanism Figure 3 Figure 7 for Figure 2 Schematic diagram of the first support and part of the testing mechanism Figure 4 ; Figure 8 for Figure 1 Schematic diagram of the central feeding conveyor mechanism; Figure 9 for Figure 1 Schematic diagram of the unloading conveyor mechanism; Figure 10 for Figure 1 Schematic diagram of the conveyor platform; Figure 11 for Figure 1 Schematic diagram of the structure of the first conveying fixture; Figure 12 for Figure 1 Schematic diagram of the structure of the second conveying fixture; Figure 13 This is a schematic diagram of the workflow structure of the oblique symmetric detection method according to an embodiment of the present invention; Figure 14 This is a flowchart of the point inspection process in the oblique symmetric detection method of the present invention; Figure 15 This is a schematic diagram of the structure of the battery cell to be tested; Figure 16 This is a schematic diagram of the detection area of ​​the battery cell to be tested at the first CCD camera. Wherein: 1-frame, 2-feeding mechanism, 3-feeding conveyor mechanism, 31-material handling claw, 32-conveying platform, 321-left conveying platform, 322-right conveying platform, 3221-conveying guide rail, 3222-conveying base, 3223-placement platform, 4-detection mechanism, 40-second conveying fixture, 401-third moving guide rail, 402-fourth moving guide rail, 403-fifth moving guide rail, 404-second moving base, 41-first conveying fixture, 411-first moving base 412-Second moving guide rail, 413-First moving seat, 414-Detection platform, 415-Fixed seat, 42-First CCD camera, 43-First laser sensor, 44-Second CCD camera, 45-Second laser sensor, 46-Camera, 47-Bottom laser sensor, 48-Detection and handling assembly, 5-Unloading conveyor mechanism, 51-Unloading mechanical claw, 52-Tilting and transferring module, 6-Unloading mechanism, 7-Conveyor belt, 8-First support, 9-Second support. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them; the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] This embodiment provides a symmetrical detection device, the structure of which is as follows: Figure 1As shown, the system includes a frame, which is composed of multiple frame bodies. Each mechanism is matched with a frame body as needed. The frame 1 is equipped with a feeding mechanism 2, a feeding conveying mechanism 3, a testing mechanism 4, an unloading conveying mechanism 5, and an unloading mechanism 6 that cooperate with each other. The material to be tested is conveyed to the corresponding workstation by the feeding mechanism 2, and then picked up by the feeding conveying mechanism 3 and conveyed to the testing mechanism 4 for dual-channel testing. After the testing is completed, the material is conveyed to the unloading mechanism 6 by the unloading conveying mechanism 5 for unloading and packaging.

[0030] Structure as Figure 2-3 As shown, the detection mechanism 4 is an independent dual-channel detection mechanism, including a first detection mechanism and a second detection mechanism arranged parallel to each other along the length of the frame 1. The components in the first detection mechanism and the components in the second detection mechanism are structurally identical and arranged obliquely symmetrically. As needed, an existing transfer module carrier and a flipping module are also set between the feeding mechanism and the detection mechanism 4 to flip the two test materials 180° before sending them to the detection mechanism. The components of the first detection mechanism include a first CCD camera 42, a first laser sensor 43, a second CCD camera 44, a second laser sensor 45, a camera 46, a detection and handling component 48, a first conveying fixture 41, and a second conveying fixture 40. Specifically, the structure is as follows Figure 2-7As shown, the frame 1 is provided with a first support 8 and a second support 9 arranged parallel to each other. A first CCD camera 42, penetrating the first support 8, is mounted upside down in the middle of the first support 8 via a corresponding mounting assembly (using existing mounting assemblies, the same below). A first laser sensor 43 is mounted on one side of the first support 8 via a mounting assembly. A first conveying fixture 41 is located below the first support 8 on the frame 1, carrying the material to be tested and conveying it along its detection area. The first CCD camera 42 and the first laser sensor 43 are respectively facing the first conveying fixture 41 to detect the material to be tested. A second CCD camera 44 is mounted on the side of the second support 9 adjacent to the first laser sensor 43 via a mounting assembly. A camera 46 is mounted on the side of the second support 9 away from the second CCD camera 44 via a mounting assembly. A second laser sensor 45 is mounted at the bottom of the middle of the second support 9 via a mounting assembly. The optical sensor 45 includes an upper surface laser sensor and side laser sensors symmetrically arranged on both sides of the upper surface laser sensor, used to detect the sides and upper surface of the material to be tested. A second conveying fixture 40 is provided on the frame 1 below the second support 9 to carry the material to be tested and convey it along its detection direction. The battery is also carried and conveyed along its detection direction. Its conveying path is the detectable area of ​​the detection mechanism 4. The second CCD camera 44, camera 46 and the second laser sensor 45 are suspended on the frame 1. The second CCD camera 44 and the upper surface laser sensor are respectively facing the second conveying fixture 40 to detect the material to be tested. A detection and handling assembly 48 is provided on the frame 1 between the first support 8 and the second support 9 to connect the material to be tested on the first conveying fixture 41 and send it to the second conveying fixture 40. Bottom laser sensors 47 are respectively provided between the first detection mechanism and the second detection mechanism and the unloading conveying mechanism 5.

[0031] Structure as Figure 11 As shown, the first conveying fixture 41 includes a first movable guide rail 411 fixedly mounted on the frame 1, a second movable guide rail 412 movably mounted on the first movable guide rail 411, a first movable seat 413 movably mounted on the second movable guide rail 412, and a detection platform 414 mounted on the first movable seat 413. The first movable guide rail 411 is perpendicular to the second movable guide rail 412. The detection platform 414 is provided with a fixed seat 415 for placing the material to be tested. The detection platform also includes a rotary motor fixedly mounted on the first movable seat 413. The rotary motor is drivenly connected to the fixed seat 415 and is used to drive the fixed seat 415 to rotate around its own axis, which facilitates the detection of each component. The second moving guide rail 412 drives the test material set on the fixed base 415 to move on the first moving guide rail 411. The movement path of the test material passes through the detection area of ​​the corresponding component in the detection mechanism 4 in sequence, completing the detection of each component, which facilitates detection and improves efficiency.

[0032] Structure as Figure 12As shown, the second conveying fixture 40 includes a left conveying fixture and a right conveying fixture. The left and right conveying fixtures have the same structure and are symmetrically arranged. The left conveying fixture includes a third moving guide rail 401 fixedly mounted on the frame 1, a fourth moving guide rail 402 movably mounted on the third moving guide rail 401, a fifth moving guide rail 403 movably mounted on the fourth moving guide rail 402, a second moving seat 404 movably mounted on the fifth moving guide rail 403, and a detection platform mounted on the second moving seat 404. The third moving guide rail 401 is perpendicular to the fourth moving guide rail 402. The detection platform is provided with a fixed seat for placing the material to be tested. The detection platform also includes a rotary motor fixedly mounted on the second moving seat 404. The rotary motor is driven by the fixed seat and is used to drive the fixed seat to rotate around its own axis, which facilitates the detection of each component. The fourth moving guide rail 402 drives the test material, which is set on the fixed seat, to move longitudinally on the third moving guide rail 401. The fifth moving guide rail 403 drives the test material to move laterally on the fourth moving guide rail 402, so that the movement path of the test material is square. Since the test material needs to be transported alternately, the fixed seats on the left and right conveying fixtures overlap when receiving the material (located on the adjacent sides of the left and right conveying fixtures). Being on the same straight line facilitates the connection of incoming materials from the feeding mechanism in the same direction or the incoming materials transported by the first laser detection and subsequent detection and handling components. It also facilitates the completion of normal detection within the detection area of ​​the detection mechanism components. The movement path of the test material passes through the detection area of ​​the corresponding components in the detection mechanism 4. The left and right conveying fixtures alternately transport and detect, improving efficiency and ensuring normal operation. Specifically, taking the second detection mechanism as an example, in the initial state, the fixed seat on the right conveying fixture is close to the feeding mechanism, and the fixed seat on the left conveying fixture is close to the first conveying mechanism. The fixtures are on the same path. When the second conveying fixture receives the test material from the feeding mechanism's mechanical claw, the test material is placed on the fixed seat of the right conveying fixture. It is first photographed and inspected by a camera, then moves along the third moving guide rail, passes through the second laser sensor for flange edge inspection, and then moves through the second CCD camera for edge inspection. The test material is then transported to the first conveying fixture for further inspection via the inspection and handling assembly. After unloading, the right conveying fixture moves to one side via the fifth moving guide rail and then returns along a square path to continue receiving material. While the fixed seat on the right conveying fixture moves the test material for inspection, the fixed seat on the left conveying fixture also alternately receives material. After the test material on the right conveying fixture is inspected by the second laser sensor, the left conveying fixture receives material and performs the same inspection in sequence. The left and right conveying fixtures alternately adjust the material receiving and inspection to ensure work efficiency and stability. Similarly, the second conveying fixture in the first inspection mechanism uses the same method for material receiving and inspection. The structure is as follows: Figure 8As shown, the feeding and conveying mechanism 3 includes a picking mechanical claw 31 and a conveying platform 32. The picking mechanical claw is located on one side of the feeding mechanism, which makes the picking movement space larger. The conveying platform 32 includes a left conveying platform 321 and a right conveying platform 322 symmetrically arranged on the same horizontal line. The conveying directions of the left conveying platform 321 and the right conveying platform 322 are opposite, which makes it convenient to place two battery cells on the conveying platform 32 at the same time for efficient conveying. Then, they are sent to the corresponding detection mechanism to improve the detection speed and quantity in the subsequent detection process and improve efficiency. The picking mechanical claw 31 picks up two pieces of material to be tested at a time. The picking mechanical claw 31 picks up the material from the feeding mechanism 2 and places it on the conveying platform 32 for conveying to the subsequent matching detection mechanism. Specifically, the structure is as follows Figure 8 and 10 As shown, the left conveying platform 321 and the right conveying platform 322 are mounted on the frame 1 by a bracket, forming a whole. The left conveying platform 321 and the right conveying platform 322 have the same structure, including a conveying guide rail 3221, a conveying base 3222, and a placement platform 3223. The conveying guide rail 3221 is set along the conveying route, and the conveying base 3222 is movably mounted on the conveying guide rail 3221. The placement platform 3223 is set on the conveying base 3222. The movement directions of the placement platform 3223 in the left conveying platform 321 and the right conveying platform 3222 are opposite. The conveying base 3222 is driven by a translation drive and moves along the conveying guide rail 3221. The translation drive can be a drive cylinder or other components. The symmetrically arranged left and right conveying platforms can place two materials to be tested on the left and right conveying platforms respectively, and transport the two materials to be tested to the subsequent testing mechanisms on both sides. This not only improves the material feeding and conveying efficiency, but also effectively improves the speed, efficiency, and quantity of testing.

[0033] Structure as Figure 9 As shown, the unloading and conveying mechanism 5 includes an unloading mechanical claw 51 and a flipping and transferring module 52. The unloading mechanical claw 51 is located between the flipping and transferring module 52 and the unloading mechanism 6. The unloading mechanical claw 51 picks up the material from the flipping and transferring module 52 and places it on the unloading mechanism 6. The flipping and moving module adopts the structure in the prior art. In this embodiment, the structure of the flipping and moving module is not required. It is only necessary to meet the requirement of being able to flip and move according to the needs. The specific structure will not be described in detail in this embodiment.

[0034] In this embodiment, the feeding mechanism 2 and the unloading mechanism 6 adopt equipment from the prior art. The unloading mechanism and the feeding mechanism can have the same structure. The specific structure will not be described in detail in this embodiment. The difference lies in the order of use. When the feeding mechanism is used, the picking mechanical claw grabs the material to be tested on the loading tray in the mechanism and sends it for testing. When the unloading mechanism is used, the flipping and transfer module flips the product and the unloading mechanical claw picks it up and sends it to the empty material tray in the unloading mechanism for loading. The specific structure is not required. It is only necessary to meet the requirements of automated feeding and unloading. The specific structure will not be described in detail in this embodiment.

[0035] In this embodiment, the structure is as follows Figure 1 As shown, a positioning CCD camera is also installed on the frame 1 between the feeding mechanism 2 and the feeding conveying mechanism 3. The positioning CCD camera is on the path of the material picking and transporting machine claw 31, and performs image positioning processing on the material to be tested picked up by the material picking and transporting machine claw 31.

[0036] In this embodiment, the structure is as follows Figure 1 As shown, the frame 1 is also equipped with an NG collection conveyor belt 7. The conveyor belt 7 is located on one side of the unloading mechanism 6, which facilitates the rejection of unqualified test products and their centralized recycling through the conveyor belt 7, thereby improving efficiency.

[0037] The oblique-symmetric detection method based on the above-mentioned device has the following process: Figure 13 As shown, the specific steps include: S1. First, the device performs pre-processing, and then the material to be tested is sent to the corresponding station by the feeding mechanism for the feeding conveyor to grab. The pre-processing process is as follows: Figure 14 As shown, specifically: (1) Clean and wipe the first conveying fixture, the second conveying fixture, and the standard block to ensure that the fixture and the standard block are clean; (2) Using the tooling in the prior art, the standard block is placed on the first conveying fixture and the second conveying fixture in sequence. The device has the inspection program in the prior art. The program is switched to Block inspection mode and then started to perform inspection. (3) After the inspection is completed, the inspection results are saved locally and the display interface in the device indicates whether the inspection has passed. When the inspection passes, the inspection of other jigs is carried out in sequence. When the inspection fails, the jigs and the standard blocks are cleaned and wiped, or the reasons for the failure are analyzed according to the pictures, and the corrected is found until the inspection passes. The standard blocks are removed and saved, the jigs are wiped again, the program is switched to normal production mode, and the machine is ready for production. S2. The material-grabbing robotic claw in the feeding and conveying mechanism simultaneously grasps two pieces of material to be tested. During the material-grabbing process, it passes through a positioning camera. The positioning camera CCD takes pictures of the two pieces of material to be tested at the bottom of the material-grabbing robotic claw for positioning. After the positioning CCD camera takes pictures and positions them, it is transported to the conveying platform. One piece of material to be tested is placed on each of the placement platforms of the left and right conveying platforms. The two placement platforms move in opposite directions on the conveying guide rail. At the same time, after the material to be tested on the conveying platform is removed, the conveying platform returns to its initial position, and the material-grabbing robotic arm transports the material to be tested back to the conveying platform. This cycle continues. The material to be tested is sent by the conveying platform to the existing transfer module carrier for scanning. The flipping requirement can be achieved through the existing flipping module. The specific structure is not described in detail in this embodiment. After the two pieces of material to be tested are flipped 180°, they are transferred to the corresponding conveying fixtures of the first and second testing mechanisms for testing. The first testing mechanism is channel 1, and the second testing mechanism is channel 2. The dual-channel testing is carried out simultaneously. The dual-channel testing principle is the same. Channel 2 is not described in detail. The material to be tested is a battery cell, specifically: ①Channel 1: The first conveying fixture moves the material to be tested, and the first CCD camera takes pictures of the top of the material to be tested. During the testing process, the battery cell of the material to be tested is split in half and photographed in two parts. Then the system combines the two photos into a complete image. Channel 2: The second conveyor fixture moves the material to be tested, and the side camera takes pictures of the material to be tested for inspection; ②Channel 1: The first conveying fixture continues to move the material to be tested. The first laser sensor uses an adjustment device from existing technology to adjust the angle to detect the explosion-proof valve area of ​​the material to be tested. The explosion-proof valve area of ​​the material to be tested is as follows: Figure 15 As shown; Channel 2: The second conveying fixture continues to move the material to be tested, and the two side laser sensors and one upper surface laser sensor in the second laser sensor detect the two sides and the upper surface of the material to be tested; ③Channel 1: The first conveying fixture continues to move the material to be tested; Channel 2: The second conveyor fixture continues to move the material to be tested, and the second CCD camera on the side and above detects the edge of the material to be tested; ④Channel 1: Product handling, the test material is connected to the first conveyor fixture and sent to the second conveyor fixture by the testing and handling components; Channel 2: Product handling, the test material is connected to the second conveyor fixture and sent to the first conveyor fixture by the testing and handling components; ⑤Channel 1: The second conveying fixture moves the material to be tested, and the second CCD camera on the side above detects the edge of the material to be tested; Channel 2: The first conveying fixture moves the material to be tested, and the first laser sensor on the side above detects the material on the side above the test. ⑥Channel 1: The second conveying fixture continues to move the material to be tested. Two side laser sensors and one top surface laser sensor in the second laser sensor array detect the sides and top surface of the material to be tested, i.e., the flange surface of the material to be tested. (See [link]). Figure 16 As shown; Channel 2: The first conveying fixture moves the material to be tested, and the first CCD camera takes pictures of the top of the material to be tested for detection; ⑦Channel 1: The second conveying fixture moves the material to be tested, and the side camera takes pictures of the material to be tested for detection; Channel 2: Product handling; ⑧Channel 1: Laser movement, detected by bottom laser sensor; Channel 2: Laser movement, detected by bottom laser sensor; ⑨ Products that have passed inspection on channels 1 and 2 are transported to the transfer shaft, where they are flipped by the transfer module; S3. The unloading mechanical claw in the unloading conveyor grabs the flipped product and determines whether it is OK or NG. OK products are put into the unloading mechanism and finally stored in the warehouse. NG products are placed on the NG collection conveyor belt located on one side of the unloading mechanism for recycling.

[0038] It should be noted that the feeding and unloading mechanisms, the mechanical claws for picking up materials, the limiting components, the lifting components, the handling components, the feeding and unloading conveying mechanisms, and the positioning camera in the above-mentioned device are all controlled by the controller to achieve automated operation.

[0039] This invention features two sets of testing mechanisms on a frame for simultaneous dual-channel testing. The fixtures drive the cells to be tested to move sequentially to each testing component, enabling testing of different parts of the cells. This ensures the testing effect and accuracy of the cells, and the entire testing process is automated, greatly improving testing efficiency. Furthermore, the components in the testing mechanism are arranged obliquely and symmetrically to ensure the complementarity of the component sizes, reducing the layout area and meeting the size requirements.

[0040] In addition to the above embodiments, the present invention may have other implementation methods; all technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A symmetrical detection device, comprising a frame, wherein a feeding mechanism (2), a feeding conveying mechanism (3), a detection mechanism (4), a discharging conveying mechanism (5), and a discharging mechanism (6) are sequentially arranged on the frame (1), characterized in that: The detection mechanism (4) is a dual-channel detection mechanism that is independent of each other. It includes a first detection mechanism and a second detection mechanism that are parallel to each other along the length of the frame (1). The components in the first detection mechanism are structurally identical to those in the second detection mechanism and are arranged obliquely symmetrically. The first detection mechanism includes a first CCD camera (42), a first laser sensor (43), a second CCD camera (44), a second laser sensor (45), a camera (46), a detection and handling assembly (48), a first conveying fixture (41), and a second conveying fixture (40). The first CCD camera (42) and the first laser sensor (43) are suspended upside down above the frame (1) by a first bracket (8) set on the frame (1). The frame (1) is located on the first bracket (8). Below the first conveying fixture (41) is provided to carry the material to be tested and convey it along its detection area. The second CCD camera (44), the second laser sensor (45) and the camera (46) are suspended upside down above the frame (1) by the second bracket (9) set on the frame (1). The second conveying fixture (40) is provided below the second bracket (9) on the frame (1) to carry the material to be tested and convey it along its detection direction. The detection and handling assembly (48) is provided between the first bracket (8) and the second bracket (9) on the frame (1) to connect the material to be tested on the first conveying fixture (41) and send it to the second conveying fixture (40). Bottom laser sensors (47) are respectively provided between the first detection mechanism and the second detection mechanism and the unloading conveying mechanism (5). The material to be tested is conveyed to the corresponding workstation by the feeding mechanism (2), and then transported to the testing mechanism (4) by the feeding conveying mechanism (3) for dual-channel testing. After the testing is completed, the material is transported to the unloading mechanism (6) by the unloading conveying mechanism (5) for unloading and packaging.

2. The oblique symmetric detection device according to claim 1, characterized in that: The first CCD camera (42) is provided in the middle of the first bracket (8). The first CCD camera (42) penetrates the first bracket (8). The first laser sensor (43) is provided on one side of the first bracket (8). The first CCD camera (42) and the first laser sensor (43) are respectively facing the first conveying fixture (41) to detect the material to be tested.

3. The oblique symmetric detection device according to claim 1, characterized in that: The second CCD camera (44) is provided on the side of the second bracket (9) near the first laser sensor (43), and the camera (46) is provided on the side of the second bracket (9) away from the side where the second CCD camera (44) is provided. The second laser sensor (45) is provided at the bottom of the middle part of the second bracket (9). The second laser sensor (45) includes an upper surface laser sensor and side laser sensors symmetrically arranged on both sides of the upper surface laser sensor, which are used to detect the two sides and the upper surface of the material to be tested. The second CCD camera (44) and the upper surface laser sensor are respectively directed toward the second conveying fixture (40) to detect the material to be tested.

4. The oblique symmetric detection device according to claim 1, characterized in that: The first conveying fixture (41) includes a first movable guide rail (411) fixedly installed on the frame (1), a second movable guide rail (412) movably installed on the first movable guide rail (411), a first movable seat (413) movably installed on the second movable guide rail (412), and a detection platform (414) installed on the first movable seat (413). The first movable guide rail (411) is perpendicular to the second movable guide rail (412), and the detection platform (414) is provided with a fixed seat (415) for placing the material to be tested. The second moving guide rail (412) drives the test material set on the fixed base (415) to move on the first moving guide rail (411), and the movement path of the test material passes through the detection area of ​​the component in the corresponding detection mechanism (4) in sequence.

5. The oblique symmetric detection device according to claim 1, characterized in that: The second conveying fixture (40) includes a left conveying fixture and a right conveying fixture. The left and right conveying fixtures have the same structure and are symmetrically arranged. The left conveying fixture includes a third moving guide rail (401) fixedly mounted on the frame (1), a fourth moving guide rail (402) movably mounted on the third moving guide rail (401), a fifth moving guide rail (403) movably mounted on the fourth moving guide rail (402), a second moving seat (404) movably mounted on the fifth moving guide rail (403), and a detection platform mounted on the second moving seat (404). The moving guide rail (401) is perpendicular to the fourth moving guide rail (402), and the detection platform is provided with a fixed seat for placing the test material; the fourth moving guide rail (402) drives the test material set on the fixed seat to move along the longitudinal direction on the third moving guide rail (401), and the fifth moving guide rail (403) drives the test material to move along the transverse direction on the fourth moving guide rail (402), so that the movement path of the test material is square. The left conveying fixture and the right conveying fixture take turns conveying the test material, and the movement path of the test material passes through the detection area of ​​the component in the corresponding detection mechanism (4).

6. The oblique symmetric detection device according to claim 1, characterized in that: The feeding and conveying mechanism (3) includes a picking mechanical claw (31) and a conveying platform (32). The conveying platform (32) includes a left conveying platform (321) and a right conveying platform (322) symmetrically arranged on the same horizontal line. The conveying directions of the left conveying platform (321) and the right conveying platform (322) are opposite. The picking mechanical claw (31) picks up the material from the feeding mechanism (2) and places it on the conveying platform (32). The left conveying platform (321) and the right conveying platform (322) have the same structure, including a conveying guide rail (3221), a conveying base (3222) and a placement platform (3223). The conveying guide rail (3221) is set along the conveying route. The conveying base (3222) is movably mounted on the conveying guide rail (3221). The placement platform (3223) is set on the conveying base (3222). The movement directions of the placement platform (3223) in the left conveying platform (321) and the right conveying platform (3222) are opposite.

7. The oblique symmetric detection device according to claim 1, characterized in that: The unloading conveying mechanism (5) includes an unloading mechanical claw (51) and a flipping and transfer module (52). The unloading mechanical claw (51) is located between the flipping and transfer module (52) and the unloading mechanism (6). The unloading mechanical claw (51) picks up the flipping and transfer module (52) and places it on the unloading mechanism (6).

8. The oblique symmetric detection device according to claim 1, characterized in that: The frame (1) is also provided with an NG collection conveyor belt (7), which is located on one side of the unloading mechanism (6).

9. A method for oblique symmetric detection based on any one of the devices in claims 1-8, characterized in that, Specifically, the following steps are included: S1. The feeding mechanism delivers the material to be tested to the corresponding workstation for the feeding and conveying mechanism to grab; S2. The feeding and conveying mechanism's gripper simultaneously grasps two pieces of material to be tested and transports them to the conveying platform. One piece of material to be tested is placed on each of the placement platforms of the left and right conveying platforms. The two placement platforms move in opposite directions on the conveying guide rails and are delivered to the designated transfer module carrier for barcode scanning. After the flipping module in the device flips the two pieces of material to be tested by 180°, they are transferred to the corresponding conveying fixtures of the first and second testing mechanisms, respectively, for testing. The first testing mechanism is channel 1, and the second testing mechanism is channel 2. Dual-channel testing is performed simultaneously, specifically as follows: ①Channel 1: The first conveying fixture moves the material to be tested, and the first CCD camera takes pictures of the top of the material to be tested. Channel 2: The second conveyor fixture moves the material to be tested, and the side camera takes pictures of the material to be tested for inspection; ②Channel 1: The first conveying fixture drives the material to be tested to continue moving, and the first laser sensor detects the upper side of the material to be tested; Channel 2: The second conveying fixture continues to move the material to be tested, and the two side laser sensors and one upper surface laser sensor in the second laser sensor detect the two sides and the upper surface of the material to be tested; ③Channel 1: The first conveying fixture continues to move the material to be tested; Channel 2: The second conveyor fixture continues to move the material to be tested, and the second CCD camera on the side and above detects the edge of the material to be tested; ④Channel 1: Product handling, the test material is connected to the first conveyor fixture and sent to the second conveyor fixture by the testing and handling components; Channel 2: Product handling, the test material is connected to the second conveyor fixture and sent to the first conveyor fixture by the testing and handling components; ⑤Channel 1: The second conveying fixture moves the material to be tested, and the second CCD camera on the side above detects the edge of the material to be tested; Channel 2: The first conveying fixture moves the material to be tested, and the first laser sensor on the side above detects the material on the side above the test. ⑥Channel 1: The second conveying fixture drives the material to be tested to continue moving. The two side laser sensors and one upper surface laser sensor in the second laser sensor detect the two sides and the upper surface of the material to be tested. Channel 2: The first conveying fixture moves the material to be tested, and the first CCD camera takes pictures of the top of the material to be tested for detection; ⑦Channel 1: The second conveying fixture moves the material to be tested, and the side camera takes pictures of the material to be tested for detection; Channel 2: Product handling; ⑧Channel 1: Laser movement, detected by bottom laser sensor; Channel 2: Laser movement, detected by bottom laser sensor; ⑨ Products that have passed inspection on channels 1 and 2 are transported to the transfer shaft, where they are flipped by the transfer module; S3. The unloading mechanical claw in the unloading conveyor grabs the flipped product and determines whether it is OK or NG. OK products are put into the unloading mechanism and finally stored in the warehouse. NG products are placed on the NG collection conveyor belt located on one side of the unloading mechanism for recycling.

10. The oblique symmetric detection method according to claim 9, characterized in that: Before proceeding to step S1, the detection mechanism in the device undergoes preprocessing, specifically as follows: (1) Clean and wipe the first conveying fixture, the second conveying fixture, and the standard block; (2) Place the standard blocks on the first and second conveying fixtures in sequence and perform an inspection operation; (3) If the inspection fails, continue to clean and wipe the jig and the standard block until the inspection passes. Remove the standard block and keep it. Wipe the jig again, switch to normal production mode, and standby to prepare for production.

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