A lithium battery electrode sheet protection film bending mechanism

Abstract

The utility model relates to lithium battery production and processing technical field, and disclose a kind of lithium battery electrode sheet protection film bending mechanism, including first fixed frame, still include: the second fixed frame of fixed connection in the one end of first fixed frame, the one end fixed connection of second fixed frame has rotary seat, at least one set of rotary plate is rotatably connected on rotary seat, first suction surface is had on rotary seat, second suction surface is had on rotary plate, rotary plate can switch between suction state and bending state, when rotary plate is in suction state, second suction surface and first suction surface are coplanar, when rotary plate is in bending state, second suction surface and first suction surface are perpendicular;Tightly connected on the second fixed frame of sliding connection;The first suction surface and second suction surface of the utility model can be respectively with the two sides of protection film indentation suction, then second suction surface rotates from parallel state to perpendicular state, can make protection film along indentation bending, conveniently adhere on electrode sheet inner wall.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production and processing technology, specifically to a lithium battery electrode sheet protective film bending mechanism. Background Technology

[0002] Lithium-ion battery electrodes are divided into positive and negative electrodes, which usually extend out of the battery and are responsible for the transfer and storage of electrons and lithium ions during the charging and discharging process.

[0003] During lithium battery production, protective films are typically applied to the electrode sheets during transport and testing to prevent dust, fingerprints, and other stains. The outer surface of the electrode sheet is usually flat, allowing the protective film to be applied directly using a robotic arm, suction cup, and vision camera. However, the inner wall is an L-shaped right-angled surface, requiring the protective film to be bent before application. To address this, we designed a lithium battery electrode sheet protective film bending mechanism. Utility Model Content

[0004] This utility model provides a bending mechanism for protective film on lithium battery electrode sheets. By rotating a plate connected to a rotating base, and having a first adsorption surface and a second adsorption surface on the rotating base and the rotating plate respectively, the protective film can be bent, making it easier for a robotic arm to apply. This solves the problem mentioned in the background art of not being able to apply film to L-shaped right-angled surfaces.

[0005] This utility model provides the following technical solution: A bending mechanism for a protective film on a lithium battery electrode sheet includes a first fixing frame and a second fixing frame fixedly connected to one end of the first fixing frame. A rotating seat is fixedly connected to one end of the second fixing frame. At least one set of rotating plates is rotatably connected to the rotating seat. The rotating seat has a first adsorption surface, and the rotating plates have a second adsorption surface. The rotating plates can switch between an adsorption state and a bending state. When the rotating plate is in the adsorption state, the second adsorption surface and the first adsorption surface are coplanar. When the rotating plate is in the bending state, the second adsorption surface and the first adsorption surface are perpendicular. A fastening member is slidably connected to the second fixing frame. When the fastening member slides, it can press the protective film on the second adsorption surface toward the electrode sheet.

[0006] As a preferred embodiment of this utility model, the adhesive component includes: a scraper; a second cylinder is fixedly connected to the other end of the second fixing frame; an adapter plate is fixedly connected to the output end of the second cylinder; a connecting plate is rotatably connected to the end of the adapter plate away from the second cylinder via a pin; and the scraper is fixedly connected to the connecting plate; a spring; a first support plate is fixedly connected to the adapter plate; a second support plate is fixedly connected to the connecting plate; both ends of the spring are fixedly connected to the first support plate and the second support plate, respectively; and the first support plate and the second support plate are located on both sides of the pin. When the spring extends, the scraper can tend to adhere to the protective film on the second adsorption surface.

[0007] As a preferred embodiment of this utility model, a baffle is fixedly connected to the second fixing frame, and a limiting post is internally threaded onto the baffle. The end face of the second support plate away from the first support plate abuts against the limiting post.

[0008] As a preferred embodiment of this utility model, a slide rail is fixedly connected to the second fixing frame, a slider is slidably connected to the slide rail, and the adapter plate is fixedly connected to the slider.

[0009] As a preferred embodiment of this utility model, a first cylinder is rotatably connected to the first fixed frame, and a pusher is fixedly connected to the output end of the first cylinder. The end of the pusher away from the first cylinder is rotatably connected to the rotating plate. When the first cylinder is activated, the rotating plate can switch between a suction state and a bending state.

[0010] As a preferred technical solution of this utility model, the pusher frame has a U-shaped structure.

[0011] As a preferred embodiment of this utility model, the top and bottom of the rotating seat are fixedly connected to guide rails, the guide rails are arc-shaped, and the push frame and the rotating plate are rotatably connected to guide wheels that match the guide rails.

[0012] As a preferred technical solution of this utility model, a first negative pressure suction hole and a second negative pressure suction hole are respectively provided on the first adsorption surface and the second adsorption surface, and a first flexible pad matching the first negative pressure suction hole is fixedly connected to the first adsorption surface, and a second flexible pad matching the second negative pressure suction hole is fixedly connected to the second adsorption surface.

[0013] Compared with the prior art, this utility model provides a bending mechanism for the protective film of lithium battery electrode sheets, which has the following advantages: 1. In this lithium battery electrode sheet protective film bending mechanism, a rotating plate is rotatably connected to the rotating seat. The first adsorption surface on the rotating seat and the second adsorption surface on the rotating plate can respectively pick up the protective film indentation on both sides. Then, the rotating plate rotates, which can make the protective film bend along the indentation, so that it can be easily attached to the inner wall of the electrode sheet.

[0014] 2. In the lithium battery electrode sheet protective film bending mechanism, the second cylinder contracts and slides the adapter plate. Under the action of the spring force, the connecting plate tends to rotate around the pin shaft. At this time, the scraper can press the inner wall of the electrode sheet on the bent surface of the protective film, which can not only reduce air bubbles, but also increase the bonding quality between the protective film and the electrode sheet.

[0015] All parts not covered in this device are the same as or can be implemented using existing technology. The first and second adsorption surfaces of this utility model can respectively absorb the protective film indentation from both sides. Then, when the second adsorption surface rotates from a parallel state to a perpendicular state, the protective film can be bent along the indentation, making it easy to adhere to the inner wall of the electrode sheet. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 This is a three-dimensional schematic diagram of the present utility model. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the present utility model. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the rotating plate of this utility model. Figure 1 ; Figure 4 This is a three-dimensional schematic diagram of the rotating plate of this utility model. Figure 2 ; Figure 5 This is a three-dimensional schematic diagram of the scraper of this utility model. Figure 1 ; Figure 6 This is a three-dimensional schematic diagram of the scraper of this utility model.

[0018] In the diagram: 1. First fixed frame; 101. Industrial camera; 102. Second fixed frame; 103. Baffle; 104. Limiting post; 2. Rotating seat; 201. First negative pressure suction hole; 202. Guide rail; 203. First flexible pad; 3. Rotating plate; 301. Second negative pressure suction hole; 302. Second flexible pad; 4. First cylinder; 401. Pushing frame; 5. Second cylinder; 501. Adapter plate; 502. First support plate; 6. Connecting plate; 601. Scraper; 602. Second support plate; 603. Spring; 7. Slide rail; 701. Slider. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Reference Figures 1-6 A bending mechanism for a protective film on a lithium battery electrode sheet includes a first fixed frame 1, on which an industrial camera 101 (model: USS-1800CL) is bolted. The mechanism also includes a second fixed frame 102 fixedly connected to one end of the first fixed frame 1, and a connecting frame fixedly connected to the other end of the first fixed frame 1 for connection to the execution end of a robotic arm. In use, the position of the protective film is first determined by the industrial camera 101. Then, the robotic arm, carrying the first and second fixed frames 102 and their components, applies negative pressure to the protective film, bending it, and finally affixing the bent protective film to the inner wall of the electrode sheet. A rotating seat 2 is fixedly connected to one end of the second fixed frame 102, and at least one set of rotating plates 3 are rotatably connected to the rotating seat 2. Preferably, two sets of rotating plates 3 are provided. The rotating seat 2 has a first adsorption surface, and the rotating plates 3 have a second adsorption surface. When the rotating plates 3 rotate, they can be in an adsorption state and bending state. The switching between states is as follows: When the rotating plate 3 is in the suction state, the second adsorption surface is coplanar with the first adsorption surface, that is, parallel. Here, the protective film has indentations, which divide the protective film into a fixed surface and a bent surface. The first adsorption surface is in contact with the fixed surface, and the second adsorption surface is in contact with the bent surface. When the rotating plate 3 is in the bending state, the second adsorption surface is perpendicular to the first adsorption surface. That is, when the rotating plate 3 rotates from the parallel to the perpendicular direction, it can bend the bent surface along the crease to form a right angle, which is convenient for attaching to the inner wall of the electrode sheet. The fastening member slidably connected to the second fixing frame 102 can press the protective film on the second adsorption surface toward the electrode sheet when the fastening member slides. When attaching after bending, the first adsorption surface directly presses the fixed surface to attach it to the inner wall of the electrode sheet. Then the fastening member slides along the long side of the bent surface. During the sliding process, the bent surface can be pressed onto the electrode sheet, which can not only reduce air bubbles, but also increase the adhesion quality between the protective film and the electrode sheet.

[0021] In use, the rotating plate 3 is rotatably connected to the rotating seat 2. The first adsorption surface on the rotating seat 2 and the second adsorption surface on the rotating plate 3 can respectively pick up the protective film indentation on both sides. Then the rotating plate 3 rotates, which can make the protective film bend along the indentation, so that it can be easily attached to the inner wall of the electrode sheet.

[0022] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 Here, the bonding component is designed as follows: a scraper 601, which has an L-shaped structure, with the short side of the L-shape abutting against the bent surface of the protective film. The scraper 601 is located between the two sets of rotating plates 3. During the sliding process of the scraper 601, it can press the bent surface against the inner wall of the electrode sheet, increasing the bonding quality. A second cylinder 5 is fixedly connected to the other end of the second fixing frame 102. A transition plate 501 is fixedly connected to the output end of the second cylinder 5. A connecting plate 6 is rotatably connected to the end of the transition plate 501 away from the second cylinder 5 via a pin, fixing the scraper 601 to the end of the connecting plate 6 away from the transition plate 501. A spring 603, preferably a compression spring, is fixedly connected to the transition plate 501 with a first support plate 502. A second support plate 602 is fixedly connected to the connecting plate 6, located on the back side of the surface where the scraper 601 is located. The two ends of the spring 603 are respectively connected to the first support plate 502. The first support plate 502 and the second support plate 602 are fixedly connected, and the first support plate 502 and the second support plate 602 are located on both sides of the pin shaft. When the spring 603 extends, the scraper 601 tends to adhere to the protective film on the second adsorption surface. When the protective film is applied after bending, the second cylinder 5 retracts and slides the adapter plate 501. Under the elastic force of the spring 603, the connecting plate 6 tends to rotate around the pin shaft. At this time, the scraper 601 can press the inner wall of the electrode sheet on the bent surface of the protective film, which can not only reduce air bubbles, but also increase the adhesion quality between the protective film and the electrode sheet.

[0023] Reference Figure 6 A baffle 103 is fixedly connected to the second fixed frame 102. A limiting post 104 is threaded into the baffle 103. The end face of the second support plate 602 away from the first support plate 502 abuts against the limiting post 104. When the second cylinder 5 extends and the end face of the second support plate 602 abuts against the limiting post 104, the spring 603 is compressed and the connecting plate 6 and the scraper 601 rotate in opposite directions, that is, they rotate away from the bending surface of the protective film. At this time, when bending the bending surface of the protective film, the scraper 601 can be prevented from blocking the bending surface. While ensuring the effective bending of the protective film, the bending surface is prevented from detaching from the second adsorption surface.

[0024] Reference Figure 1 , Figure 5 and Figure 6 A slide rail 7 is fixedly connected to the second fixed frame 102, and a slider 701 is slidably connected to the slide rail 7. The sliding direction of the slider 701 is parallel to the extension and retraction direction of the second cylinder 5. The adapter plate 501 is fixedly connected to the slider 701. During use, the adapter plate 501 can be reliably slid, reducing shaking and tilting, and improving the use effect.

[0025] Reference Figures 1-4 A first cylinder 4 is rotatably connected to the first fixed frame 1. A pusher 401 is fixedly connected to the output end of the first cylinder 4. The pusher 401 is preferably U-shaped. The end of the pusher 401 away from the first cylinder 4 is rotatably connected to the rotating plate 3. When the first cylinder 4 is activated, the rotating plate 3 can switch between the suction state and the bending state. In use, the first cylinder 4 extends and can rotate the rotating plate 3 through the pusher 401. The second adsorption surface is coplanar with the first adsorption surface. The second adsorption surface is in the suction state and can suction the bent surface. When the first cylinder 4 retracts, the second adsorption surface changes from a state parallel to the first adsorption surface to a state perpendicular to it. During this process, the bent surface can be made perpendicular to the fixed surface, thus achieving bending.

[0026] Reference Figures 1-4 Guide rails 202 are fixedly connected to the top and bottom of the rotating seat 2. The guide rails 202 have an arc-shaped structure, and the axis of the arc-shaped structure coincides with the rotation axis of the rotating plate 3. Guide wheels that match the guide rails 202 are rotatably connected to the push frame 401 and the rotating plate 3. During the rotation of the rotating plate 3, the rotating plate 3 can be reliably rotated, thus improving the performance.

[0027] Reference Figure 3 and Figure 4 A first negative pressure suction hole 201 and a second negative pressure suction hole 301 are respectively opened on the first and second adsorption surfaces. Air pipe connectors are connected to the rotating seat 2 and the rotating plate 3. A negative pressure is generated at the first negative pressure suction hole 201 and the second negative pressure suction hole 301 by connecting an external negative pressure source (vacuum pump, vacuum generator or vacuum blower). The protective film is adsorbed by the negative pressure. Negative pressure adsorption is an existing technology. A first flexible pad 203 matching the first negative pressure suction hole 201 is fixedly connected to the first adsorption surface, and a second flexible pad 302 matching the second negative pressure suction hole 301 is fixedly connected to the second adsorption surface. That is, through holes corresponding to the first negative pressure suction hole 201 and the second negative pressure suction hole 301 are opened on both the first flexible pad 203 and the second flexible pad 302. By setting the flexible pads, not only can the adsorption effect on the protective film be improved, but also the protective film can be avoided from being scratched, thus improving the use effect.

[0028] Components not described in detail in this article are existing technologies.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bending mechanism for a protective film on a lithium battery electrode sheet, comprising a first fixing frame (1), characterized in that, Also includes: A second fixed frame (102) is fixedly connected to one end of the first fixed frame (1). The second fixing frame (102) is fixedly connected to a rotating seat (2) at one end. At least one set of rotating plates (3) are rotatably connected to the rotating seat (2). The rotating seat (2) has a first adsorption surface, and the rotating plate (3) has a second adsorption surface. The rotating plate (3) can switch between an adsorption state and a bending state. When the rotating plate (3) is in the adsorption state, the second adsorption surface is coplanar with the first adsorption surface. When the rotating plate (3) is in the bending state, the second adsorption surface is perpendicular to the first adsorption surface. The fastener is slidably connected to the second fixing frame (102). When the fastener slides, it can press the protective film on the second adsorption surface toward the electrode sheet.

2. The lithium battery electrode sheet protective film bending mechanism according to claim 1, characterized in that, The fastening element includes: The scraper (601) is fixedly connected to the other end of the second fixed frame (102) with a second cylinder (5). The output end of the second cylinder (5) is fixedly connected to a transition plate (501). The end of the transition plate (501) away from the second cylinder (5) is rotatably connected to a connecting plate (6) via a pin. The scraper (601) is fixedly connected to the connecting plate (6). The spring (603) has a first support plate (502) fixedly connected to the adapter plate (501) and a second support plate (602) fixedly connected to the connecting plate (6). The two ends of the spring (603) are fixedly connected to the first support plate (502) and the second support plate (602) respectively. The first support plate (502) and the second support plate (602) are located on both sides of the pin shaft. When the spring (603) is extended, the scraper (601) can tend to stick to the protective film on the second adsorption surface.

3. The lithium battery electrode sheet protective film bending mechanism according to claim 2, characterized in that, A baffle (103) is fixedly connected to the second fixed frame (102), and a limit post (104) is threadedly connected to the baffle (103). The end face of the second support plate (602) away from the first support plate (502) abuts against the limit post (104).

4. The lithium battery electrode sheet protective film bending mechanism according to claim 3, characterized in that, The second fixed frame (102) is fixedly connected to a slide rail (7), and a slider (701) is slidably connected to the slide rail (7). The adapter plate (501) is fixedly connected to the slider (701).

5. The lithium battery electrode sheet protective film bending mechanism according to claim 1, characterized in that, A first cylinder (4) is rotatably connected to the first fixed frame (1). A push frame (401) is fixedly connected to the output end of the first cylinder (4). The end of the push frame (401) away from the first cylinder (4) is rotatably connected to the rotating plate (3). When the first cylinder (4) is activated, the rotating plate (3) can switch between the suction state and the bending state.

6. The lithium battery electrode sheet protective film bending mechanism according to claim 5, characterized in that, The push frame (401) has a U-shaped structure.

7. The lithium battery electrode sheet protective film bending mechanism according to claim 6, characterized in that, The top and bottom of the rotating seat (2) are fixedly connected to guide rails (202), which are arc-shaped. The push frame (401) and the rotating plate (3) are rotatably connected to guide wheels that match the guide rails (202).

8. The lithium battery electrode sheet protective film bending mechanism according to claim 1, characterized in that, The first adsorption surface and the second adsorption surface are respectively provided with a first negative pressure suction hole (201) and a second negative pressure suction hole (301), and the first adsorption surface is fixedly connected with a first flexible pad (203) matching the first negative pressure suction hole (201), and the second adsorption surface is fixedly connected with a second flexible pad (302) matching the second negative pressure suction hole (301).

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