Square battery film pasting mechanism

Abstract

A square battery film pasting mechanism, comprising a film pasting roller, a side film pasting device, and a carrying device for transferring the battery passing through the film pasting roller to the side film pasting device; the carrying device comprises a carrying frame, a moving module arranged on the carrying frame, a turnover component arranged on the moving module and moving with the moving module, and a mechanical hand I connected with the turnover component and used for grabbing the battery; the turnover component turns the mechanical hand I by 180 DEG during the translation of the moving module, so that the side of the battery which is not pasted with the film faces the side film pasting device; the side film pasting device comprises a battery clamping tool and a film edge rolling mechanism; the battery clamping tool comprises a lifting supporting component used for supporting the battery and a clamping mechanism used for clamping the battery; and the turnover component resets during the resetting of the moving module. According to the application, the film pasting is more comprehensive, and the film pasting efficiency is higher.

Description

Technical Field

[0001] This invention relates to a square battery film-applying mechanism, belonging to the technical field of battery packaging. Background Technology

[0002] Competition in the battery manufacturing industry is becoming increasingly fierce. As the precision integration of components and the degree of automation in assembly increase, the requirements for equipment production efficiency are also increasing. In the battery production process, it is often necessary to attach a blue film to the battery cell. The purpose is to cover the entire battery cell and make it a whole, so as to better protect the cell during transportation and distribution, achieving dustproof and waterproof effects, and also preparing for subsequent hot-pressing encapsulation.

[0003] Chinese patent application number 202220319784.4 discloses a blue film conveying device and a blue film device for lithium battery packs. The device pushes the battery along with the blue film into the wrapping space (or film application roller track) formed by the pressure roller assembly, so that the blue film can be flatly applied to the outer surface of the lithium battery. However, this method only achieves film application on the upper surface, lower surface and one side between the upper and lower surfaces of the battery. The film application is not comprehensive and cannot wrap the battery on all four sides, resulting in poor performance.

[0004] Therefore, based on the above-mentioned blue film wrapping device, in order to achieve four-sided wrapping of the battery, it is also necessary to transfer the battery with three-sided wrapping to a separately set side film application device. The battery clamping fixture in the side film application device clamps the battery, and the rolling mechanism in the side film application device completes the side film application through rolling.

[0005] In existing technologies, when a robotic arm cyclically transfers batteries, each cycle involves actions such as grasping, translating, and lowering, as well as resetting actions such as lifting and retracting. This method, firstly, as... Figure 8 As shown, the gripping area is the already coated part. When the robotic arm moves, the coated side faces the battery clamping fixture, while the uncoated side faces away from it. The coated side passes the battery clamping fixture first, and then the uncoated part reaches the fixture. This results in the robotic arm's movement exceeding the battery clamping fixture during translation, meaning the translation path is large and needs optimization. Furthermore, within one cycle, the robotic arm undergoes time-consuming actions such as "gripping-translation-lowering-returning," leading to a long cycle. Therefore, due to these combined factors, the robotic arm's cycle time is slow, resulting in low coating efficiency. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a square battery film application mechanism that provides more comprehensive film application and higher application efficiency.

[0007] A square battery film-applying mechanism includes a film-applying roller conveyor, a side film-applying device, and a conveying device for transferring batteries passing through the film-applying roller conveyor to the side film-applying device. The conveying device includes a conveying frame, a movable module mounted on the conveying frame, a flipping component mounted on the movable module that moves with the movable module, and a robotic arm connected to the flipping component for gripping the battery. During the translation of the movable module, the flipping component rotates the robotic arm 180° so that the side of the battery not being filmed faces the side film-applying device. The side film-applying device includes a battery clamping fixture and a film edge rolling mechanism. The battery clamping fixture includes a lifting support component for supporting the battery and a clamping mechanism for clamping the battery. The flipping component flips and resets during the reset of the movable module.

[0008] Preferably, the film edge rolling mechanism is located on the side of the battery clamping fixture away from the film application roller.

[0009] Preferably, the film edge rolling mechanism includes an upper side rolling roller, a lower side rolling roller, an upper wheel frame and a lower wheel frame for mounting the upper side rolling roller and the lower side rolling roller respectively, a lifting mechanism one connected to the upper wheel frame, and a lifting mechanism two connected to the lower wheel frame.

[0010] Preferably, the film edge rolling mechanism further includes a rolling frame, which is provided with an upper guide structure and a lower guide structure for vertically moving the upper wheel frame and the lower wheel frame, respectively. The upper guide structure and the lower guide structure have the same structure, including a guide rail and a guide slider located on the guide rail. The guide slider of the upper guide structure is connected to the upper wheel frame, and the guide slider in the lower guide structure is connected to the lower wheel frame.

[0011] Preferably, the clamping mechanism is provided on both sides of the lifting support component; the clamping mechanism includes a lateral clamping component, a lateral moving component connected to the lateral clamping component, and a lateral power mechanism connected to the lateral moving component.

[0012] Preferably, the lateral clamping component is one of a pneumatic gripper or a clamping plate.

[0013] Preferably, the clamping mechanism further includes a horizontal limiting component for maintaining the horizontal movement of the lateral moving component; the horizontal limiting component includes a horizontal rail and a horizontal slider limited on the horizontal rail, and the lateral clamping component is connected to the horizontal slider.

[0014] Preferably, the moving module is a lead screw assembly, the lead screw assembly has a lead screw slide, and the flipping component is connected to the lead screw slide.

[0015] Preferably, a feeding device is provided on the inlet side of the film-applying roller conveyor. The feeding device is reset when the robot arm grabs the battery, and the cycle of the feeding device is the same as that of the robot arm.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. This invention allows for more comprehensive film application and higher application efficiency. Attached Figure Description

[0018] Figure 1 A simplified schematic diagram of a square battery film application mechanism;

[0019] Figure 2 for Figure 1 Method diagram at point A;

[0020] Figure 3 This is a simplified schematic diagram of the conveying device.

[0021] Figure 4 A simplified structural diagram of the side-mounted film applicator from a first-view perspective;

[0022] Figure 5 A simplified structural diagram of the side-mounted film applicator from a second-view perspective;

[0023] Figure 6 A simplified structural diagram of a battery clamping fixture;

[0024] Figure 7 This is a simplified schematic diagram of the membrane edge rolling mechanism;

[0025] Figure 8 This is a schematic diagram of the movement of a robotic arm in the background art. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example: Figure 1-2As shown, a square battery film applicator includes an applicator roller 11. As described in the prior art, the applicator roller 11 consists of an upper pressure roller 111 and a lower pressure roller 112. The upper pressure roller 111 and the lower pressure roller are mounted on a roller frame. Furthermore, a film cutting mechanism 12 and a film pulling mechanism 13 are respectively arranged above and below the applicator roller 11. Both the film cutting mechanism 12 and the film pulling mechanism 13 are located in front of the entrance of the applicator roller 11. The roller frame is provided with an adsorption hole (which is not visible because it is blocked by the blue film). When the film pulling mechanism 13 pulls out a certain length of blue film downwards, the blue film is adsorbed at the entrance of the applicator roller 11 by the adsorption hole. Then, the film cutting mechanism 12 cuts the blue film to obtain a blue film segment of a certain length. A feeding mechanism 15 is provided at the front side of the inlet of the film-applying roller conveyor 11. The feeding mechanism 15 pushes the battery 0-0 along with the blue film segment into the film-applying roller conveyor 11. During the passage of the battery, the film-applying roller conveyor 11 folds the blue film segment in half, so that the blue film segment is applied to the upper and lower surfaces of the battery and one side connecting the upper and lower surfaces of the battery. After the battery has completely passed through the film-applying roller conveyor 11, the two open edges of the blue film segment extend laterally beyond the upper and lower surfaces of the battery, thereby forming two excess material strips each containing one film edge.

[0028] The battery coating mechanism also includes a side coating device 2 and a conveying device 3. The side coating device 2 is located on the side of the coating roller 11 exit and is used to apply excess material to the side of the battery that is not coated. The conveying device 3 is used to transfer the battery that has passed through the coating roller 11 to the side coating device 2.

[0029] This embodiment differs from the prior art in that, as Figure 3As shown, the conveying device 3 includes a conveying frame 31, a moving module 32 mounted on the conveying frame 31, a flipping component 33 mounted on the moving module 32 and moving with the moving module 32, and a robotic arm 34 connected to the flipping component 33. When the battery is exposed at the exit of the film-applying roller 11, the robotic arm 34 grabs one side of the battery. The moving module 32 drives the robotic arm 34 to move, so that the battery passes completely through the film-applying roller 11. Then, the moving module 32 continues to move horizontally. The flipping component 33 moves during the horizontal movement of the moving module 32, causing the robotic arm 34 to flip 180°, so that the battery grabbed by the robotic arm 34 flips 180°, so that the side of the battery that has not been filmed faces the side film-applying device 2, and the side of the battery that has been filmed faces away from the side film-applying device 2. As the moving module 32 continues to move, the battery wrapped with blue film is sent to the side film-applying device 2. The moving module 32 adopts the most common lead screw assembly, which has a lead screw 321, a lead screw slide 322 that moves on the lead screw 321, and a guide assembly for defining the lead screw slide 322. The flipping component 33 is connected to the lead screw slide 322. The guide assembly includes a guide rail 323 located on the conveyor frame 31 and a slider (not visible in the figure) disposed on the lead screw slide 322 and cooperating with the guide rail 323. The lead screw 321 is directly driven by the motor 324 or driven by the motor 324 through a belt pulley transmission system.

[0030] like Figure 4-5 As shown, the side film applicator 2 includes a battery clamping fixture 21 and a film edge rolling mechanism 22; the battery clamping fixture 21 is used to clamp a battery that has been rotated 180°, and the film edge rolling mechanism 22 rolls the two open edges of the blue film onto the side of the battery that is not covered with film.

[0031] like Figure 6As shown, the battery clamping fixture 21 includes a lifting support component 211 for supporting the battery and a clamping mechanism for clamping the battery. The lifting support component 211 is raised and lowered by a lifting assembly 212, such as a lifting cylinder. The lifting support component 211 is made of plates, and there are two of them. Each lifting support component 211 is connected to a lifting assembly 212. Before the battery is delivered, the lifting support component 211 is located below the robot arm 34. The purpose is to maintain a certain distance from the lower surface of the battery to ensure that the battery will not have an adverse effect on scratching the already applied film during the translation process. When the battery is placed above the lifting support component 211, it moves upward to a state flush with the lower surface of the battery. Then, the clamping mechanism is activated to fix the battery on the lifting support component 211. At the same time, the robot arm 34 releases the battery, the moving module 32 moves and resets, and the flipping component 33 flips and resets during the reset process of the moving module 32, thereby resetting the robot arm 34. Since the lifting support component 211 is flush with the lower surface of the battery when the robot arm 34 releases the battery, the released battery will not shift towards or away from the film edge rolling mechanism 22, ensuring that it can be rolled by the film edge rolling mechanism 22, thereby ensuring the rolling quality. The lifting support component 211 is provided with clamping mechanisms on both sides. The clamping mechanism specifically includes a lateral clamping component 213, a lateral moving component 214 connected to the lateral clamping component 213, and a lateral power mechanism 215 connected to the lateral moving component 214. The lateral clamping component 213 can be a pneumatic gripper or a clamping plate. The lateral power mechanism 215 provides power to the lateral moving component 214, so that the lateral moving component 214 moves closer to or away from the battery. The lateral power mechanism 215 can be a cylinder, but is not limited to a cylinder. Of course, in other embodiments, the clamping mechanism can also be a vertical clamping mechanism.

[0032] After being clamped, the side of the battery not covered by the film faces away from the film-applying roller 11. Therefore, accordingly, as... Figure 1 , 4 As shown, the film edge rolling mechanism 22 is positioned on the side of the battery clamping fixture 21 away from the film application roller 11.

[0033] like Figure 7As shown, the film edge rolling mechanism 22 includes an upper side rolling roller 221, a lower side rolling roller 222, an upper wheel frame 223 and a lower wheel frame 224 for mounting the upper side rolling roller 221 and the lower side rolling roller 222 respectively, a lifting mechanism 1 225 connected to the upper wheel frame 223, and a lifting mechanism 226 connected to the lower wheel frame 224. The lifting mechanism 1 225 can be a cylinder, but is not limited to a cylinder, and the lifting mechanism 226 can be a cylinder, but is not limited to a cylinder. When the battery is clamped in the battery clamping fixture 21, the lifting mechanism 1 225 drives the upper side rolling roller 221 to move downward, and the lifting mechanism 226 drives the lower side rolling roller 222 to move upward, so that the two open edges of the blue film are attached to the other side of the battery, thereby achieving four-sided wrapping of the battery and more comprehensive film application. The battery wrapped with blue film on all four sides can be removed from the battery clamping fixture 21 by other separately provided robotic arms or other delivery mechanisms.

[0034] To ensure more reliable rolling, the film edge rolling mechanism 22 also includes a rolling frame 227. The rolling frame 227 is provided with an upper guide structure and a lower guide structure for vertical movement of the upper wheel frame 223 and the lower wheel frame 224, respectively. The upper guide structure and the lower guide structure have the same structure, including a guide rail 228 and a guide slider 229 located on the guide rail 228. The guide slider 229 of the upper guide structure is connected to the upper wheel frame 223, and the guide slider 229 of the lower guide structure is connected to the lower wheel frame 224.

[0035] In this embodiment, the film-applying mechanism first uses a liftable lifting support component 211 to support the battery that has been flipped 180° and moved horizontally. The flipping action is set during the horizontal movement of the moving module 32, so that the cycle of the robot involves the horizontal movement and flipping movement of the robot 34, the rising movement of the lifting support component, and the horizontal and vertical resetting movements of the robot 34. The flipping movement of the robot 34 is performed during the horizontal movement of the robot 34, and the vertical resetting movement of the robot 34 is performed during the horizontal resetting movement of the robot 34. The flipping movement and vertical resetting movement of the robot 34 do not take up extra time. Therefore, the time interval between two adjacent handling actions of the handling device 3 is the sum of the robot's gripping and horizontal movement, the rising time of the lifting support component, and the horizontal resetting time of the robot. Compared with the "grip-horizontal movement-lowering-rising and retracting" action in the prior art, this is equivalent to reducing the "lowering" action and the corresponding time consumption, thereby improving the cycle time of the robot and improving the film-applying efficiency of the battery.

[0036] Secondly, the flipping component 33 is set to flip the moving battery 180°, thereby changing the side of the battery that is not covered by the film to face the side film-applying device 2. This change in battery arrangement allows the robot arm 34 to move the battery above the battery clamping fixture 21 without moving beyond the battery clamping fixture, thus optimizing the movement distance of the robot arm 34. In the prior art, the movement of the robot arm has to exceed the battery clamping fixture. Compared with the prior art, this further improves the handling cycle of the entire handling device.

[0037] In addition, the edge rolling mechanism 22 is located on the side of the battery clamping fixture 21 away from the film application roller 11. This satisfies the positional requirement for rolling the side of the battery that is not covered with film. At the same time, the edge rolling mechanism 22 is actually located on the extension line of the moving path of the moving module 32. Therefore, the edge rolling mechanism 22 can be activated as soon as the robot arm 34 resets. Compared with other positions of the edge rolling mechanism 22 on the battery clamping fixture 21, such as the side of the battery clamping fixture 21 closer to the film application roller 11, the edge rolling mechanism 22 has more time to roll the edge of the film while matching the faster cycle of the robot arm 34, thereby better ensuring the film application effect.

[0038] like Figure 6 As shown, the clamping mechanism further includes a horizontal limiting assembly for keeping the lateral moving component 214 moving horizontally; the horizontal limiting assembly includes a horizontal rail 216 and a horizontal slider 217 limited on the horizontal rail 216, and the lateral clamping component 213 is connected to the horizontal slider 217.

[0039] The feeding device 15 is reset when the robot arm 34 picks up the battery. In this way, the feeding device 15 does not need to feed the battery completely into the film-coating roller 11, which improves the cycle time of the feeding device 15 and makes it able to match the cycle time of the robot arm 34, so that the cycle time of the feeding device is the same as that of the robot arm 34.

[0040] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention have been fully described in the claims.

Claims

1. A square battery film-applying mechanism, comprising a film-applying roller conveyor (11), a side film-applying device (2), and a conveying device (3) for transferring batteries passing through the film-applying roller conveyor (11) to the side film-applying device (2), wherein the film-applying roller conveyor (11) is composed of an upper pressure roller (111) and a lower pressure roller (112), and a film-cutting mechanism (12) and a film-pulling mechanism (13) are respectively arranged above and below the film-applying roller conveyor (11), characterized in that, The transport device (3) includes a transport frame (31), a moving module (32) mounted on the transport frame (31), a flipping component (33) mounted on the moving module (32) and moving with the moving module (32), and a robotic arm (34) connected to the flipping component (33) for gripping the battery. During the translation of the moving module (32), the flipping component (33) causes the robotic arm (34) to flip 180° so that the side of the battery not covered with film faces the side film-applying device (2). The side film applicator (2) includes a battery clamping fixture (21) and a film edge rolling mechanism (22). The battery clamping fixture (21) includes a lifting support component (211) for supporting the battery and a clamping mechanism for clamping the battery; the clamping mechanism is provided on both sides of the lifting support component (211); the clamping mechanism includes a lateral clamping component (213); the film edge rolling mechanism (22) includes an upper side rolling roller (221) and a lower side rolling roller (222). The flipping component (33) flips and resets during the reset process of the moving module (32).

2. The square battery film-applying mechanism according to claim 1, characterized in that, The film edge rolling mechanism (22) is located on the side of the battery clamping fixture (21) away from the film application roller (11).

3. A square battery film-applying mechanism according to claim 1 or 2, characterized in that, The film edge rolling mechanism (22) further includes an upper wheel frame (223) and a lower wheel frame (224) for mounting the upper side rolling roller (221) and the lower side rolling roller (222), a lifting mechanism one (225) connected to the upper wheel frame (223), and a lifting mechanism two (226) connected to the lower wheel frame (224).

4. A square battery film-applying mechanism according to claim 3, characterized in that, The film edge rolling mechanism (22) further includes a rolling frame (227). The rolling frame (227) is provided with an upper guide structure and a lower guide structure for vertically moving the upper wheel frame (223) and the lower wheel frame (224), respectively. The upper guide structure and the lower guide structure have the same structure, including a guide rail (228) and a guide slider (229) located on the guide rail (228). The guide slider (229) of the upper guide structure is connected to the upper wheel frame (223), and the guide slider (229) in the lower guide structure is connected to the lower wheel frame (224).

5. A square battery film-applying mechanism according to claim 1, characterized in that, The clamping mechanism further includes a lateral moving component (214) connected to the lateral clamping component (213) and a lateral power mechanism (215) connected to the lateral moving component (214).

6. A square battery film-applying mechanism according to claim 5, characterized in that, The lateral clamping component (213) is one of a pneumatic gripper or a clamping plate.

7. A square battery film-applying mechanism according to claim 5, characterized in that, The clamping mechanism further includes a horizontal limiting assembly for keeping the lateral moving component (214) moving horizontally; the horizontal limiting assembly includes a horizontal rail (216) and a horizontal slider (217) limited on the horizontal rail (216), and the lateral clamping component (213) is connected to the horizontal slider (217).

8. A square battery film-applying mechanism according to claim 1, characterized in that, The moving module (32) is a lead screw assembly, which has a lead screw slide, and the flipping component (33) is connected to the lead screw slide.

9. A square battery film-applying mechanism according to claim 1, characterized in that, A feeding device is provided on the inlet side of the film-applying roller (11). The feeding device is reset when the robot arm (34) grabs the battery, and the rhythm of the feeding device is the same as that of the robot arm (34).

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