Visual detection device for burrs of lithium battery pole piece

Abstract

The utility model discloses a lithium battery pole piece burr visual detection device. The visual detection device comprises a pole piece adsorption platform, a pole piece sliding table mechanism and a pole piece visual detection mechanism. The pole piece adsorption platform is provided with adsorption holes; and the adsorption holes are used for adsorbing the lithium battery pole piece. The pole piece sliding table mechanism is provided with an X-axis sliding table part and a Y-axis sliding table part, and the X-axis sliding table part and the Y-axis sliding table part are used for moving the pole piece adsorption platform in the X-axis direction and the Y-axis direction respectively. The pole piece visual detection mechanism is provided with a burr detection camera, and the position of the burr detection camera is fixed. And when the pole piece adsorption platform drives one edge part of the lithium battery pole piece to pass through the view field of the burr detection camera, the burr detection camera is used for shooting the edge part and obtaining a detection image about the edge part. During the period, the position of the burr detection camera is fixed, so that the detection precision is not influenced.

Description

Technical Field

[0001] The utility model relates to the visual inspection of burrs on lithium battery electrode sheets, and in particular, to a visual inspection device for burrs on lithium battery electrode sheets. Background Art

[0002] Chinese invention patent application CN113049597A, "An on-line sampling inspection device for burrs on electrode sheets", includes: an electrode sheet sampling feeding device, an electrode sheet conveying device, a visual positioning device, an electrode sheet transfer device, a detection and adjustment workbench, and a burr detection device. Among them, the burr detection device has a transverse movement driving mechanism, a detection moving seat connected to the output end of the transverse movement driving mechanism, and a first shooting detector and a second shooting detector both installed on the detection moving seat. Through the first shooting detector and the second shooting detector, burr detection is performed on the electrode sheet. The disadvantages of the above technical solution are as follows: The first shooting detector and the second shooting detector are moving during the execution of the shooting task, which affects the detection accuracy. Transplanting after visual positioning affects the positioning accuracy and there will be deviations. Summary of the Invention

[0003] The purpose of the utility model is to solve the problem of low detection accuracy of the visual inspection device for burrs on lithium battery electrode sheets in the prior art, and to provide a new visual inspection device for burrs on lithium battery electrode sheets.

[0004] To achieve the above purpose, the utility model provides a visual inspection device for burrs on lithium battery electrode sheets. The visual inspection device includes: an electrode sheet adsorption platform, an electrode sheet sliding table mechanism, and an electrode sheet visual inspection mechanism. The electrode sheet adsorption platform has adsorption holes, and the adsorption holes are used to adsorb the lithium battery electrode sheet. The electrode sheet sliding table mechanism has an X-axis sliding table part and a Y-axis sliding table part, and the X-axis sliding table part and the Y-axis sliding table part are respectively used to move the electrode sheet adsorption platform along the X-axis and Y-axis directions. The electrode sheet visual inspection mechanism has a burr detection camera, and the position of the burr detection camera is fixed. When the electrode sheet adsorption platform drives one side of the lithium battery electrode sheet to pass through the visual field range of the burr detection camera, the burr detection camera is used to photograph the side and obtain a detection image of the side.

[0005] As a preferred solution of the burr vision detection device for lithium battery electrode sheets, it further includes: an electrode sheet rotating mechanism, the electrode sheet rotating mechanism has a Z-axis motor, the Z-axis motor forms a Z-axis rotating pair, and the Z-axis motor is used to rotate the electrode sheet adsorption platform around the Z-axis. The Z-axis motor can be a direct drive motor. It further includes: a device platform, the X-axis slide part is composed of an X-axis slide base and an X-axis slide plate, the X-axis slide base is fixed on the device platform, the X-axis slide base and the X-axis slide plate form an X-axis moving pair, the Y-axis slide part is composed of a Y-axis slide base and a Y-axis slide plate, the Y-axis slide base is fixed on the X-axis slide plate, the Y-axis slide base and the Y-axis slide plate form a Y-axis moving pair, the Z-axis motor is between the Y-axis slide plate and the electrode sheet adsorption platform, and one end of the Z-axis motor is fixed on the electrode sheet adsorption platform while the other end is fixed on the Y-axis slide plate. It further includes: a device side frame, the device side frame is fixed on the device platform, and the burr detection camera is fixed on the device side frame.

[0006] As a preferred solution of the burr vision detection device for lithium battery electrode sheets, the burr detection camera includes: a front burr detection camera, and the front burr detection camera is relative to the front of the edge when shooting.

[0007] As a preferred solution of the burr vision detection device for lithium battery electrode sheets, the burr detection camera includes: a side burr detection camera, and the side burr detection camera is relative to the side of the edge when shooting.

[0008] As a preferred solution of the burr vision detection device for lithium battery electrode sheets, the electrode sheet vision detection mechanism further has a positioning camera, the position of the positioning camera is fixed, and the positioning camera is used for visual positioning of the lithium battery electrode sheet.

[0009] Compared with the prior art, the beneficial effects of the present invention are at least: when the electrode sheet adsorption platform drives one edge of the lithium battery electrode sheet through the visual field range of the burr detection camera, the burr detection camera can shoot the edge and obtain a detection image of the edge. During this period, the position of the burr detection camera is fixed and does not affect the detection accuracy.

[0010] In addition to the technical problems solved by the present invention described above, the technical features constituting the technical solution, and the beneficial effects brought by these technical features of the technical solution, other technical problems that the present invention can solve, other technical features included in the technical solution, and the beneficial effects brought by these technical features will be further described in detail in conjunction with the drawings. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0012] Figure 2 It is the main structural view of the pole piece sliding table mechanism, pole piece rotating mechanism, and pole piece adsorption platform in the embodiment of the present utility model.

[0013] Figure 3 It is the side structural view of the pole piece sliding table mechanism, pole piece rotating mechanism, and pole piece adsorption platform in the embodiment of the present utility model.

[0014] Figure 4 It is the method flow chart in the embodiment of the present utility model. Specific embodiments

[0015] The present utility model will be further described in detail below in combination with specific embodiments and the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] Please refer to Figure 1 , which shows a visual inspection device for burrs on lithium battery pole pieces. The visual inspection device includes: a device platform 1, a device side frame 2, a pole piece sliding table mechanism 3, a pole piece rotating mechanism 4, a pole piece adsorption platform 5, a pole piece visual inspection mechanism 6, etc. The visual inspection device can perform off-line inspection and / or on-line inspection on the burrs of the lithium battery pole pieces.

[0017] The device platform 1 is used as the working platform of the visual inspection device. The bottom of the device platform 1 can be provided with rollers with brakes, aiming to facilitate displacement and convenient placement.

[0018] The device side frame 2 is fixed on the top surface of the device platform 1. The device side frame 2 is an H frame with a multi-layer structure. The device side frame 2 has side frame columns and side frame cross columns. The plane where the device side frame 2 is located is perpendicular to the Y axis.

[0019] Please refer to again Figure 1 , Figure 2 and Figure 3, the pole piece slide mechanism 3 is on the positive Y-axis side of the device side frame 2. The pole piece slide mechanism 3 has an X-axis slide part 31 and a Y-axis slide part 32. The X-axis slide part 31 is composed of an X-axis slide base 311 and an X-axis slide plate 312. The X-axis slide base 311 is fixed on the top surface of the device platform 1. The length direction of the X-axis slide base 311 extends along the X-axis direction. The X-axis slide base 311 and the X-axis slide plate 312 form an X-axis moving pair. The Y-axis slide part 32 is composed of a Y-axis slide base 321 and a Y-axis slide plate 322. The Y-axis slide base 321 is fixed on the top surface of the X-axis slide plate 312. That is, the Y-axis slide base 321 moves synchronously with the X-axis slide plate 312. The length direction of the Y-axis slide base 321 extends along the Y-axis direction. The Y-axis slide base 321 and the Y-axis slide plate 322 form a Y-axis moving pair. Among them, the end of the Y-axis slide base 321 on the device side frame 2 is the detection station of the lithium battery pole piece, and the other end of the Y-axis slide base 321 relative to the end on the device side frame 2 is the loading station of the lithium battery pole piece. Preferably, at the loading station, manual loading or docking with other automatic equipment for machine automatic loading can be carried out.

[0020] The pole piece adsorption platform 5 is located directly above the Y-axis slide plate 322. There are adsorption holes for adsorbing the lithium battery pole piece on the top surface of the pole piece adsorption platform 5. Preferably, the pole piece adsorption platform 5 is connected to the vacuum system through a rotary joint and a pipeline.

[0021] The pole piece rotating mechanism 4 is between the pole piece adsorption platform 5 and the Y-axis slide plate 322. The pole piece rotating mechanism 4 has a Z-axis motor 41. One end of the Z-axis motor 41 is fixed on the bottom surface of the pole piece adsorption platform 5, and the opposite end is fixed on the top surface of the Y-axis slide plate 322. The Z-axis motor 41 forms a Z-axis rotating pair. Preferably, the Z-axis motor 41 can be a direct drive motor (DD motor).

[0022] Thus, the X-axis slide part 31 can drive the lithium battery pole piece to move along the X-axis direction, the Y-axis slide part 32 can drive the lithium battery pole piece to move along the Y-axis direction, and the Z-axis motor 41 can drive the lithium battery pole piece to rotate around the Z-axis.

[0023] The visual inspection mechanism 6 for the electrode has a positioning camera 61, a front burr detection camera 62, a side burr detection camera 63, etc. The positioning camera 61 and the front burr detection camera 62 are both fixed on the cross column of the device side frame 2, while the side burr detection camera 63 is fixed on the vertical column of the device side frame 2. The shooting directions of the positioning camera 61 and the front burr detection camera 62 are both downward along the Z-axis. The visual field range of the positioning camera 61 covers the detection station of the lithium battery electrode. The shooting direction of the side burr detection camera 63 is the positive direction of the Y-axis. The positioning camera 61 is higher than the front burr detection camera 62. The front burr detection camera 62 is higher than the side burr detection camera 63. The side burr detection camera 63 is flush with the lithium battery electrode. The positioning camera 61 is used to shoot the lithium battery electrode at the detection station and obtain a positioning image of the lithium battery electrode. Based on the positioning image, the position and posture of the lithium battery electrode at the detection station can be determined, and then the position and / or posture of the lithium battery electrode can be adjusted through the electrode slide mechanism 3 and / or the electrode rotation mechanism 4 to provide support for subsequent detection. When one edge of the lithium battery electrode passes through the visual field range of the front burr detection camera 62 along the X-axis direction, the front burr detection camera 62 is used to shoot the edge and obtain a front detection image of the edge. Based on the front detection image, it can be determined whether there are front burrs on the edge. When one edge of the lithium battery electrode passes through the visual field range of the side burr detection camera 63 along the X-axis direction, the side burr detection camera 63 is used to shoot the edge and obtain a side detection image of the edge. Based on the side detection image, it can be determined whether there are side burrs on the edge.

[0024] Please refer to Figure 4 , the detection method of the visual detection device, includes:

[0025] Step S1, perform burr vision detection on one long side of the lithium battery electrode sheet: Sub-step S11, the Z-axis motor 41 operates, and the Z-axis motor 41 drives the lithium battery electrode sheet to rotate, so that one long side of the lithium battery electrode sheet is parallel to the X-axis. Sub-step S12, the Y-axis slide unit 32 operates, and the Y-axis slide unit 32 drives the lithium battery electrode sheet to move along the Y-axis direction, so that one long side of the lithium battery electrode sheet is at the center of the front burr detection camera 62. Sub-step S13, the X-axis slide unit 31 operates, and the X-axis slide unit 31 drives the lithium battery electrode sheet to move along the positive X-axis direction. During this period, the front burr detection camera 62 and the side burr detection camera 63 take pictures of one long side of the lithium battery electrode sheet. Sub-step S14, based on the captured front and side detection images of one long side of the lithium battery electrode sheet, determine whether there are front and side burrs on one long side of the lithium battery electrode sheet.

[0026] Step S2, perform burr vision detection on one short side of the lithium battery electrode sheet: Sub-step S21, the Z-axis motor 41 operates, and the Z-axis motor 41 drives the lithium battery electrode sheet to rotate clockwise by 90 degrees. At this time, one short side of the lithium battery electrode sheet is parallel to the X-axis. Sub-step S22, the Y-axis slide unit 32 operates, and the Y-axis slide unit 32 drives the lithium battery electrode sheet to move along the Y-axis direction, so that one short side of the lithium battery electrode sheet is at the center of the front burr detection camera 62. Sub-step S23, the X-axis slide unit 31 operates, and the X-axis slide unit 31 drives the lithium battery electrode sheet to move along the negative X-axis direction. During this period, the front burr detection camera 62 and the side burr detection camera 63 take pictures of one short side of the lithium battery electrode sheet. Sub-step S24, based on the captured front and side detection images of one short side of the lithium battery electrode sheet, determine whether there are front and side burrs on one short side of the lithium battery electrode sheet.

[0027] Step S3, perform burr vision inspection on the other long side of the lithium battery electrode sheet: Sub-step S31, the Z-axis motor 41 operates, and the Z-axis motor 41 drives the lithium battery electrode sheet to rotate clockwise by 90 degrees. At this time, the other long side of the lithium battery electrode sheet is parallel to the X-axis. Sub-step S22, the Y-axis slide part 32 operates, and the Y-axis slide part 32 drives the lithium battery electrode sheet to move along the Y-axis direction, so that the other long side of the lithium battery electrode sheet is at the center of the front burr detection camera 62. Sub-step S23, the X-axis slide part 31 operates, and the X-axis slide part 31 drives the lithium battery electrode sheet to move along the positive X-axis direction. During this period, the front burr detection camera 62 and the side burr detection camera 63 take pictures of the other long side of the lithium battery electrode sheet. Sub-step S34, determine whether there are front and side burrs on the other long side of the lithium battery electrode sheet according to the captured front and side detection images of the other long side of the lithium battery electrode sheet.

[0028] Step S4, perform burr vision inspection on the other short side of the lithium battery electrode sheet: Sub-step S41, the Z-axis motor 41 operates, and the Z-axis motor 41 drives the lithium battery electrode sheet to rotate clockwise by 90 degrees. At this time, the other short side of the lithium battery electrode sheet is parallel to the X-axis. Sub-step S42, the Y-axis slide part 32 operates, and the Y-axis slide part 32 drives the lithium battery electrode sheet to move along the Y-axis direction, so that the other short side of the lithium battery electrode sheet is at the center of the front burr detection camera 62. Sub-step S43, the X-axis slide part 31 operates, and the X-axis slide part 31 drives the lithium battery electrode sheet to move along the negative X-axis direction. During this period, the front burr detection camera 62 and the side burr detection camera 63 take pictures of the other short side of the lithium battery electrode sheet. Sub-step S44, determine whether there are front and side burrs on the other short side of the lithium battery electrode sheet according to the captured front and side detection images of the other short side of the lithium battery electrode sheet.

[0029] In steps S1 to S4, the positioning camera 61 performs visual positioning on the lithium battery electrode sheet.

[0030] The above only expresses the implementation manners of the present utility model, and its description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A lithium battery pole piece burr visual detection device, characterized in that: include: Pole piece adsorption platform, pole piece slide mechanism and pole piece visual inspection mechanism; The pole piece adsorption platform has an adsorption hole, and the adsorption hole is used to adsorb the lithium battery pole piece; The pole piece slide mechanism comprises an X-axis slide portion and a Y-axis slide portion, and the X-axis slide portion and the Y-axis slide portion are respectively used to move the pole piece adsorption platform along the X-axis and Y-axis directions; the pole piece visual inspection mechanism comprises a burr detection camera, and the position of the burr detection camera is fixed; when the pole piece adsorption platform drives one side of the lithium battery pole piece through the field of view of the burr detection camera, the burr detection camera is used to photograph the edge and obtain a detection image of the edge.

2. The lithium battery pole piece burr visual detection device according to claim 1, characterized in that: Further including: A pole piece rotating mechanism, wherein the pole piece rotating mechanism has a Z-axis motor, the Z-axis motor constitutes a Z-axis rotating pair, and the Z-axis motor is used to rotate the pole piece adsorption platform around the Z-axis.

3. The lithium battery pole piece burr visual detection device according to claim 2, characterized in that: The Z-axis motor is a direct drive motor.

4. The lithium battery pole piece burr visual detection device according to claim 3, characterized in that: It further includes: a device platform, the X-axis slide portion is composed of an X-axis slide seat and an X-axis slide plate, the X-axis slide seat is fixed to the device platform, the X-axis slide seat and the X-axis slide plate constitute an X-axis moving pair, the Y-axis slide portion is composed of a Y-axis slide seat and a Y-axis slide plate, the Y-axis slide seat is fixed to the X-axis slide plate, the Y-axis slide seat and the Y-axis slide plate constitute a Y-axis moving pair, the Z-axis motor is between the Y-axis slide plate and the pole piece adsorption platform, one end of the Z-axis motor is fixed to the pole piece adsorption platform and the other end is fixed to the Y-axis slide plate.

5. The lithium battery pole piece burr visual detection device according to claim 4, characterized in that: It further includes: a device side frame, the device side frame is fixed on the device platform, and the burr detection camera is fixed on the device side frame.

6. The lithium battery pole piece burr visual inspection device according to any one of claims 1 to 5, characterized in that: The burr detection camera comprises: a front burr detection camera, and the front burr detection camera is opposite to the front side of the edge when shooting.

7. The lithium battery pole piece burr visual detection device according to any one of claims 1 to 5, characterized in that: The burr detection camera includes: a side burr detection camera, and the side burr detection camera is opposite to the side of the edge when shooting.

8. The lithium battery pole piece burr visual inspection device according to any one of claims 1 to 5, characterized in that: The pole piece visual inspection mechanism further has a positioning camera, the position of the positioning camera is fixed, and the positioning camera is used to visually locate the lithium battery pole piece.

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