Lithium battery appearance defect recognition device based on visual inspection

Abstract

The utility model relates to the technical field of lithium battery detection, in particular to a lithium battery appearance defect identification device based on visual inspection. Comprising a rack, a first transmission mechanism, two detection devices and a plurality of supporting devices, the first transmission mechanism comprises a first transmission belt and a first power assembly used for driving the first transmission belt to move. The multiple supporting devices are arranged along the periphery of the first transmission belt at equal intervals. Each supporting device comprises a first transparent rotary disc and a second transparent rotary disc. The two detection devices are installed at the upper end of the rack side by side, and each detection device comprises a second transmission mechanism and a CCD camera. The technical scheme has the advantages of high detection efficiency and comprehensive detection.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery detection, in particular to a lithium battery appearance defect recognition device based on visual detection. Background Art

[0002] The lithium battery market is becoming increasingly mature, and lithium batteries have become a new engine driving the rapid development of the entire lithium battery industry. However, during the lithium battery production process, various defects in appearance are inevitable, affecting product quality and battery pack assembly, and even posing serious quality risks. Therefore, performing appearance defect detection on lithium batteries is a very important part of lithium battery manufacturing.

[0003] In the existing technology, visual cameras are usually used to inspect the appearance of lithium batteries. Compared with manual inspection, its work efficiency is higher. However, lithium batteries have two upper and lower end faces and four side faces around them. When conducting a comprehensive inspection, it is usually necessary to set up a flipping device to flip the lithium battery over, which will affect the inspection efficiency of the equipment. Utility Model Content

[0004] The purpose of the utility model is to address the problems existing in the background technology and to propose a device for identifying appearance defects of lithium batteries based on visual inspection.

[0005] The technical solution of the utility model is a device for identifying appearance defects of lithium batteries based on visual inspection, comprising:

[0006] frame;

[0007] A first transmission mechanism, the first transmission mechanism comprising a first transmission belt and a first power assembly for driving the first transmission belt to move;

[0008] Multiple supporting devices are arranged equidistantly along the outer periphery of the first transmission belt, the supporting devices include a first transparent turntable and a second transparent turntable, the first transparent turntable and the second transparent turntable are rotatably connected, and two supporting pads are connected between the second transparent turntable and the first transmission belt; a gear ring is provided on the outer periphery of the first transparent turntable, and a rack adapted to the gear ring is connected above the first transmission belt; a plurality of rectangular holes are opened on the first transmission belt, and the plurality of rectangular holes are arranged in a one-to-one correspondence with the plurality of supporting devices;

[0009] Two detection devices, the two detection devices are mounted side by side at the upper end of the frame, the detection devices include a second transmission mechanism and a CCD camera, the second transmission mechanism includes a rectangular mounting frame disposed at the upper end of the frame, a second transmission belt, and a second power assembly mounted on the rectangular mounting frame for driving the second transmission belt, the upper end of the first transmission belt passes through the inner sides of the two second transmission belts, and the CCD camera is mounted on the second transmission belt;

[0010] Two pushers are installed on the upper end of the frame.

[0011] Preferably, support plates are provided at both inner ends of the first transmission belt, and the support plates are connected to the frame.

[0012] Preferably, the pushing device includes an electric telescopic rod and a push rod, the electric telescopic rod is installed on the side of the frame, and the push rod is connected to the output shaft of the electric telescopic rod.

[0013] Preferably, the lithium battery appearance defect identification device based on visual inspection also includes two inclined plates, which are obliquely arranged on the side of the frame away from the pushing device, and the two inclined plates are respectively arranged at the feeding ends of the two pushing devices.

[0014] Preferably, the first power assembly includes a first servo motor and two first transmission rollers, the two first transmission rollers are rotatably mounted on both ends of the frame respectively, the first transmission belt is sleeved and mounted on the two first transmission rollers, the first servo motor is mounted on the frame and its output shaft is connected to the rotating shaft of the first transmission roller.

[0015] Preferably, the second power assembly includes a second servo motor and four second transmission rollers, the four second transmission rollers are respectively rotatably installed at the four corner positions of the rectangular mounting frame, the second transmission belt is sleeved and installed on the four second transmission rollers, the second servo motor is installed on the rectangular mounting frame and its output shaft is connected to the rotating shaft of the second transmission roller.

[0016] Preferably, limiting rollers are rotatably installed at the four corners of the rectangular mounting frames on both sides, and the limiting rollers are in contact with the outer side surfaces of the second transmission belt.

[0017] Preferably, marking lines are provided on the first transparent turntable.

[0018] Compared with the existing technology, the utility model has the following beneficial technical effects: the technical solution can simultaneously carry out the discharge, detection and classification of lithium batteries, the entire work rhythm is compact and orderly, and the work efficiency is improved. Secondly, by installing two detection devices and a structure that drives the lithium battery to rotate automatically, comprehensive detection of lithium batteries can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 and Figure 2 All of them are structural schematic diagrams of the present utility model.

[0020] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A.

[0021] Figure numerals: 1. Frame; 201. First servo motor; 202. First transmission belt; 2021. Rectangular hole; 203. First transmission roller; 3. Rectangular mounting frame; 4. Second transmission belt; 51. Second transmission roller; 52. Limiting roller; 6. CCD camera; 7. Second servo motor; 8. Rack; 9. Electric telescopic rod; 10. Push rod; 11. First transparent turntable; 12. Second transparent turntable; 13. Support pad; 14. Gear ring; 15. Marking line; 16. Inclined plate; 17. Support plate. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1-Figure 3 As shown, the present embodiment proposes a device for identifying appearance defects of lithium batteries based on visual inspection, which includes a frame 1, a first transmission mechanism, two detection devices, two pushing devices and a plurality of supporting devices.

[0024] The first transmission mechanism includes a first transmission belt 202 and a first power assembly for driving the first transmission belt 202 to move. The first power assembly includes a first servo motor 201 and two first transmission rollers 203. The two first transmission rollers 203 are rotatably installed at both ends of the frame 1 respectively. The first transmission belt 202 is sleeved on the two first transmission rollers 203. The first servo motor 201 is installed on the frame 1 and its output shaft is connected to the rotating shaft of the first transmission roller 203.

[0025] Multiple supporting devices are equidistantly arranged along the outer periphery of the first transmission belt 202, and the supporting devices include a first transparent turntable 11 and a second transparent turntable 12. The first transparent turntable 11 is provided with a marking line 15, and the marking line 15 is used to realize the positioning of the lithium battery. The first transparent turntable 11 is rotatably connected to the second transparent turntable 12, and two supporting pads 13 are connected between the second transparent turntable 12 and the first transmission belt 202; a gear ring 14 is provided on the outer periphery of the first transparent turntable 11, and a rack 8 adapted to the gear ring 14 is connected above the first transmission belt 202; a plurality of rectangular holes 2021 are opened on the first transmission belt 202, and the plurality of rectangular holes 2021 are arranged in a one-to-one correspondence with the plurality of supporting devices.

[0026] Two detection devices are installed side by side at the upper end of the frame 1. The detection device includes a second transmission mechanism and a CCD camera 6. The second transmission mechanism includes a rectangular mounting frame 3 arranged at the upper end of the frame 1, a second transmission belt 4 and a second power assembly installed on the rectangular mounting frame 3 for driving the second transmission belt 4 to move. The second power assembly includes a second servo motor 7 and four second transmission rollers 51. The four second transmission rollers 51 are rotatably installed at the four corners of the rectangular mounting frame 3 respectively. The second transmission belt 4 is sleeved on the four second transmission rollers 51. The second servo motor 7 is installed on the rectangular mounting frame 3 and its output shaft is connected to the rotating shaft of the second transmission roller 51. The upper end of the first transmission belt 202 passes through the inner side of the two second transmission belts 4, and the CCD camera 6 is installed on the second transmission belt 4; the four corners of the rectangular mounting frames 3 on both sides are rotatably installed with limiting rollers 52. The limiting rollers 52 contact the outer side surface of the second transmission belt 4. The setting of the limiting rollers 52 is used to increase the wrapping angle between the second transmission belt 4 and the four second transmission rollers 51.

[0027] Both pushing devices are installed at the upper end of the frame 1; the pushing device includes an electric telescopic rod 9 and a push rod 10, the electric telescopic rod 9 is installed on the side of the frame 1, and the push rod 10 is connected to the output shaft of the electric telescopic rod 9; the lithium battery appearance defect identification device based on visual inspection also includes two inclined plates 16, the two inclined plates 16 are inclinedly arranged on the side of the frame 1 away from the pushing device, and the two inclined plates 16 are respectively arranged at the feeding ends of the two pushing devices.

[0028] In this technical solution, the lithium battery to be tested is placed on the first transparent turntable 11, and the first power component is set to drive the first transmission belt 202 to move, which is used to transport the lithium battery to one side of the detection device. Furthermore, in order to realize the positioning of multiple supporting devices, an infrared transmitter and an infrared receiver are respectively installed at both ends of the frame 1. When the support pad 13 is blocked between the infrared transmitter and the infrared receiver, the infrared signal is blocked, and the computer receives feedback from the infrared receiver, which controls the first transmission mechanism to stop driving. When the lithium battery moves to the detection device position on the left side (the left side here is the position close to the feeding starting end of the first transmission mechanism), the second power component is set to drive the CCD camera 6 to move along the circumferential direction of the second transmission belt 4, and take pictures on the upper and lower sides and the front and back sides of the lithium battery respectively, and collect four images. The CCD camera 6 then feeds the data back to the computer for processing. After the computer analyzes and processes the data, it can be determined whether the lithium battery has any damage to its appearance.

[0029] After completing the first inspection of the lithium battery, the lithium battery is continuously driven to move. At this time, the lithium battery moves to the position of the left pusher device. At the same time, the gear ring 14 contacts the rack 8, causing the first transparent turntable 11 to rotate, thereby driving the lithium battery to rotate. When the gear ring 14 is separated from the rack 8, the lithium battery is rotated 90 degrees. After the previous identification work, if the lithium battery has an appearance defect, the battery is pushed to the inclined plate 16 by the pusher device on the left. Furthermore, a defective product recovery box is set below the inclined plate 16 to receive the lithium battery that slides off the inclined plate 16. When the horizontal rotation When the lithium battery moves to the position of the detection device on the right after rotating 90 degrees, the front and back sides of the lithium battery are photographed by the detection device on the right side (the front and back sides of the lithium battery after rotation are the left and right sides of the lithium battery in its initial state), thereby realizing a comprehensive inspection of the lithium battery. If the secondary inspection fails, the lithium battery is pushed to the defective product box by the pushing device on the right side. If the product is qualified, the lithium battery continues to be conveyed. Furthermore, a conveyor belt device or a collection box is set at the conveying end of the first transmission mechanism to convey the qualified products to the next workstation or collect them.

[0030] Example 2

[0031] like Figure 1 As shown, this embodiment proposes a lithium battery appearance defect identification device based on visual inspection. Compared with Example 1, in this embodiment, support plates 17 are provided at both ends of the inner side of the first transmission belt 202, and the support plates 17 are connected to the frame 1; the setting of the support plates 17 can achieve the effect of supporting the upper end of the first transmission belt 202, thereby preventing the middle part of the upper end of the first transmission belt 202 from falling.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A device for identifying appearance defects of lithium batteries based on visual inspection, characterized in that: include: Rack (1); A first transmission mechanism, the first transmission mechanism comprising a first transmission belt (202) and a first power assembly for driving the first transmission belt (202) to move; A plurality of supporting devices are provided, the plurality of supporting devices being equidistantly arranged along the outer periphery of the first transmission belt (202), the supporting devices comprising a first transparent turntable (11) and a second transparent turntable (12), the first transparent turntable (11) being rotatably connected to the second transparent turntable (12), and two supporting pads (13) being connected between the second transparent turntable (12) and the first transmission belt (202); a toothed ring (14) is provided on the outer periphery of the first transparent turntable (11), and a rack (8) adapted to the toothed ring (14) is connected above the first transmission belt (202); a plurality of rectangular holes (2021) are provided on the first transmission belt (202), and the plurality of rectangular holes (2021) are arranged in a one-to-one correspondence with the plurality of supporting devices; Two detection devices are installed side by side at the upper end of a frame (1), the detection devices include a second transmission mechanism and a CCD camera (6), the second transmission mechanism includes a rectangular mounting frame (3) arranged at the upper end of the frame (1), a second transmission belt (4), and a second power assembly installed on the rectangular mounting frame (3) for driving the second transmission belt (4) to move, the upper end of the first transmission belt (202) passes through the inner sides of the two second transmission belts (4), and the CCD camera (6) is installed on the second transmission belt (4); Two material pushing devices are installed on the upper end of the frame (1).

2. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 1, characterized in that: Support plates (17) are provided at both inner ends of the first transmission belt (202), and the support plates (17) are connected to the frame (1).

3. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 1, characterized in that: The pushing device comprises an electric telescopic rod (9) and a push rod (10). The electric telescopic rod (9) is installed on the side of the frame (1), and the push rod (10) is connected to the output shaft of the electric telescopic rod (9).

4. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 3, characterized in that: It also includes two inclined plates (16), which are arranged obliquely on a side of the frame (1) away from the pushing device, and the two inclined plates (16) are respectively arranged at the feeding ends of the two pushing devices.

5. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 1, characterized in that: The first power assembly comprises a first servo motor (201) and two first transmission rollers (203). The two first transmission rollers (203) are rotatably mounted on two ends of the frame (1), respectively. The first transmission belt (202) is sleeved and mounted on the two first transmission rollers (203). The first servo motor (201) is mounted on the frame (1) and its output shaft is connected to the rotating shaft of the first transmission roller (203).

6. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 1, characterized in that: The second power assembly comprises a second servo motor (7) and four second transmission rollers (51). The four second transmission rollers (51) are rotatably mounted at four corner positions of a rectangular mounting frame (3). A second transmission belt (4) is sleeved and mounted on the four second transmission rollers (51). The second servo motor (7) is mounted on the rectangular mounting frame (3) and its output shaft is connected to the rotating shaft of the second transmission roller (51).

7. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 6, characterized in that: Limiting rollers (52) are rotatably installed at the four corners of the rectangular mounting frames (3) on both sides, and the limiting rollers (52) are in contact with the outer side surface of the second transmission belt (4).

8. The device for identifying appearance defects of lithium batteries based on visual inspection according to claim 1, characterized in that: A marking line (15) is provided on the first transparent turntable (11).

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