Optical detection device for battery shell

Abstract

According to the optical detection device for the battery shell, the inner wall of the battery shell can be accurately detected, and the efficiency is high. The device comprises an upper scanning camera and a lower scanning camera, the lower scanning camera is arranged below a jig seat, the jig seat is installed on a rotary table (the extending end of a clamping piece), a rolling shaft pair is arranged on the side of the jig seat, a magnet is arranged between rolling shafts of each rolling shaft pair, the rolling shaft pair and the magnets clamp a workpiece, a bearing is arranged on the side of a driving rolling shaft of the rolling shaft pair, and the rolling shaft pair and the magnets clamp the workpiece. The number of the lower scanning cameras is two, the two lower scanning cameras are arranged under the jig, and the jig is hollow. The device further comprises a rotary detection camera, the rotary detection camera is arranged over the rolling shaft pair and located between the two downward scanning cameras, and a friction block is installed below the rotary detection camera. The number of the upper scanning cameras is two, the two upper scanning cameras are arranged over the jig, and the two upper scanning cameras are located on the sides, away from the rotary detection camera, of the two lower scanning cameras respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of product detection, in particular to an optical detection device for a battery shell. Background Art

[0002] After the production and processing of the battery shell, it needs to be detected. The common detection of the battery shell usually is to detect the upper and lower end faces of the packaged battery, which solves the screening of unqualified products caused by collision and friction. However, in the overall assembly line processing, there are many uncertain factors. For example, during the extrusion molding of the shell, there are wire drawing scratches on the inner wall of the shell. The traditional device for detecting the upper and lower end faces of the shell cannot complete the detection of the inner wall of the battery shell because the shell has a certain depth and a single lens cannot focus on and photograph the inside of the shell, failing to achieve the expected detection effect. Summary of the Invention

[0003] Aiming at the drawback that the existing appearance detection device for the battery shell cannot complete the detection of the inner wall of the battery shell because the shell has a certain depth and a single lens cannot focus on and photograph the inside of the shell, failing to achieve the expected detection effect, the utility model provides an optical detection device for a battery shell, which can accurately detect the inner wall of the battery shell with high efficiency.

[0004] An optical detection device for a battery shell includes an upper scanning camera and a lower scanning camera. The lower scanning camera is arranged below the fixture base, and a light source is arranged between the lower scanning camera and the fixture base. The fixture base is installed on the turntable (the protruding end of the clamping part). On the side of the fixture base, there are a friction block and a pair of rollers. Magnets are arranged between the rollers of each pair of rollers. The pair of rollers and the magnets are used to clamp the workpiece. It is characterized in that: a bearing is arranged on the side of the driving roller of the pair of rollers; there are two lower scanning cameras, and the two lower scanning cameras are arranged directly below the fixture. The fixture is hollow, and the friction block is located between the two lower scanning cameras; it further includes a rotation detection camera, which is arranged directly above the pair of rollers, located between the two lower scanning cameras, and a friction block is installed below the rotation detection camera; there are two upper scanning cameras, and the two upper scanning cameras are arranged directly above the fixture, and the two upper scanning cameras are respectively located on one side of the two lower scanning cameras away from the rotation detection camera.

[0005] It is further characterized in that: a rotation positioning groove is arranged on the top surface of the driving roller of the pair of rollers;

[0006] There is a circle of support bayonets inside the fixture;

[0007] The two upper scanning cameras have different focal lengths;

[0008] An annular light source is installed at the lens ends of the upper scanning camera, the lower scanning camera, and the rotation detection camera.

[0009] In the above structure of the present utility model, the two upper scanning cameras respectively perform focused shooting on the upper half and the lower half of the inner wall of the outer shell, achieving complete focused shooting of the inside of the battery outer shell. The arrangement of the friction block, the rotation detection camera, and the two lower scanning cameras realizes complete detection of the lower end face of the battery outer shell, further achieving the expected detection effect and improving the detection efficiency. Description of the Drawings

[0010] Figure 1 It is a schematic top view of the application of the present utility model in a detection production line;

[0011] Figure 2 It is a schematic front view structure diagram of the present utility model;

[0012] Figure 3 It is a schematic structure diagram of the fixture base;

[0013] Figure 4 It is a schematic structure diagram of the fixture. Detailed Embodiment

[0014] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the drawings of the present invention.

[0015] See Figures 1 to 4 , an optical detection device for a battery outer shell, which includes an upper scanning camera and a lower scanning camera. The lower scanning camera is arranged below the fixture base 6, and the fixture base 6 is installed on the turntable (the protruding end of the clamping part). On the side of the fixture base 6, a pair of rollers 7 is arranged. A magnet 9 is arranged between the rollers of each pair of rollers 7. The pair of rollers 7 and the magnet 9 realize clamping of the workpiece. A bearing 8 is arranged on the side of the driving roller 71 of the pair of rollers 7. A rotation positioning groove 13 is arranged on the top surface of the driving roller 71 of the pair of rollers 7. There are two lower scanning cameras, namely lower scanning cameras 2 and 3, which are arranged directly below the fixture 12. The fixture 12 is hollow, and there is a circle of support bayonets inside the fixture 12; it further includes a rotation detection camera 5, which is arranged directly above the pair of rollers 7. The rotation detection camera 5 is located between the lower scanning cameras 2 and 3 and is used to detect whether the driving roller 71 rotates. A friction block 10 is installed below the rotation detection camera 5; there are two upper scanning cameras, namely upper scanning cameras 1 and 4, which are arranged directly above the fixture 12. The two upper scanning cameras 1 and 4 are respectively located on one side of the two lower scanning cameras 2 and 3 away from the rotation detection camera 5. The focal lengths of the upper scanning camera 1 and the upper scanning camera 4 are different and are respectively used to detect the upper half and the lower half of the inner wall surface of the battery outer shell 11. An annular light source 14 is installed at the lens ends of the upper scanning camera 1, the upper scanning camera 4, the lower scanning camera 2, the lower scanning camera 3, and the rotation detection camera 5.

[0016] The battery case 11 is placed inside the jig 12 and supported by the supporting bayonet. The battery case 11 is attracted and fixed by the magnet 9. When the battery case 11 rotates to the upper scanning camera 2, the upper scanning camera 2 detects whether the upper half of the inner wall surface of the battery case 11 is qualified. When the battery case 11 rotates to the lower scanning camera 1, the lower scanning camera 1 detects whether the bottom surface of the battery case 11 is qualified. Due to the occlusion of the bayonet inside the jig 12, the lower scanning camera 2 cannot completely detect the bottom surface of the battery case 11. When the battery case 11 rotates below the rotary detection camera 5, friction occurs between the friction block 10 and the bearing 8, and the bearing 8 drives the driving roller 71 of the roller pair 7 to rotate together. The driving roller 71 drives the battery case 11 to rotate a certain angle, and the battery case 11 drives the driven roller 72 of the roller pair 7 to rotate. At this time, the part of the bottom end of the battery case 11 blocked by the supporting bayonet is exposed. The rotary detection camera 5 detects whether the rotary positioning groove 13 at the top of the driving roller 71 has rotated a certain angle. If it has not rotated, the appearance detection of the battery case 11 cannot be completed, and this product is a defective product. When the battery case 11 rotates to the lower scanning camera 4, the lower scanning camera 4 detects again whether the bottom surface of the battery case 11 is qualified. When the battery case 11 rotates to the upper scanning camera 3, the upper scanning camera 3 detects whether the lower half of the inner wall surface of the battery case 11 is qualified, and the process is completed.

Claims

1. An optical inspection device for a battery shell, comprising an upward scanning camera and a downward scanning camera, wherein the downward scanning camera is arranged below a fixture seat, a light source is arranged between the downward scanning camera and the fixture seat, the fixture seat is mounted on a turntable, a friction block and a roller pair are arranged on the side of the fixture seat, a magnet is arranged between the rollers of each roller pair, the roller pair and the magnet realize the clamping of the workpiece, characterized in that: A bearing is arranged on the side of the active roller of the roller pair, there are two downward scanning cameras, the two downward scanning cameras are arranged directly below the jig, the jig is hollow, and the friction block is located between the two downward scanning cameras; it also includes a rotation detection camera, the rotation detection camera is arranged directly above the roller pair, the rotation detection camera is located between the two downward scanning cameras, and a friction block is installed below the rotation detection camera; there are two upward scanning cameras, the two upward scanning cameras are arranged directly above the jig, and the two upward scanning cameras are respectively located on the side of the two downward scanning cameras away from the rotation detection camera.

2. An optical detection device for a battery casing according to claim 1, characterized in that: A rotation positioning groove is provided on the top surface of the active roller of the roller pair.

3. An optical detection device for a battery casing according to claim 1, characterized in that: A circle of supporting bayonet is arranged inside the fixture.

4. An optical detection device for a battery casing according to claim 1, characterized in that: The two up-scanning cameras have different focal lengths.

5. An optical detection device for a battery casing according to claim 1 or 4, characterized in that: An annular light source is installed at the lens ends of the upward scanning camera, the downward scanning camera and the rotation detection camera.

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