A laminating machine for lithium batteries

Abstract

The utility model discloses a kind of lamination machines of lithium battery, including manipulator and laminating station, manipulator includes connecting piece and moving part, the moving part surface is equipped with air pump suction disc, the laminating station surface is equipped with base, the top of the base is equipped with limit rod, electric telescopic rod is installed in the laminating station middle part, electric telescopic rod top is equipped with placing plate, the limit rod is equipped with sleeve away from placing plate side. The utility model is designed with vertical lifting rod, let the moving part at manipulator be moved when lifting, pressure surface can rise and fall with it, so that moving part can always keep stable support state, even if moving part produces larger degree shake, pressure surface can also have a certain degree of energy absorption effect, to reduce the influence of moving part on material when picking up sheet material.

Description

Technical Field

[0001] This utility model relates to the field of stacking machines, and in particular to a stacking machine for lithium batteries. Background Technology

[0002] Stacking machines are mainly used to assemble the positive and negative electrode sheets and separators of lithium-ion battery cells into cells by Z-shaped stacking.

[0003] The two robotic arms on the left and right sides of the equipment pick up the electrode sheets from the positive and negative electrode troughs. After being precisely positioned by the secondary positioning worktable, they are alternately placed on the stacking table. The stacking table moves left and right in coordination with the two robotic arms, and the separator forms a Z-shape to separate the positive and negative electrode sheets. The equipment cycles in this way to achieve the stacking and assembly of the electrode group.

[0004] However, although the stacking table has a limiting rod to limit and fix the inner material, the moving part used to pick up the wafers will still generate a small amount of vibration when the robot moves up and down. This vibration can not only cause the sheet structure of the positive and negative electrodes to bend slightly, but in severe cases it can also affect the final production quality of the lithium battery.

[0005] Therefore, in order to address the above problems, a lithium battery stacking machine is provided here. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a lithium battery stacking machine, mainly to solve the problem of vibration of the moving parts of the robot arm of the stacking machine during lifting.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model relates to a lithium battery stacking machine, comprising a robotic arm and a stacking table. The robotic arm includes a connecting component and a moving component. The moving component has an air pump suction cup on its surface. The stacking table has a base on its surface, and a limit rod is installed on the top of the base. An electric telescopic rod is installed in the middle of the stacking table, and a placement plate is installed on the top of the electric telescopic rod. A sleeve is provided on the side of the limit rod away from the placement plate, and a vertical telescopic component is installed inside the sleeve. A pressure-bearing surface is installed on the top of the vertical telescopic component, which is used to support the synchronous upward movement of the moving component. The extension height of the vertical telescopic component is less than the height of the moving component to the top of the limit rod, and the distance between the pressure-bearing surface and the moving component does not exceed 2 cm.

[0008] Preferably, the vertical telescopic component includes a fixed rod located inside the sleeve. An extension telescopic rod is provided inside the fixed rod, and a pressure-bearing surface is installed on the top of the extension telescopic rod. A telescopic spring is connected between the pressure-bearing surface and the top edge of the fixed rod.

[0009] Preferably, the fixing rod and the sleeve are coaxially arranged, and a connecting block is installed between the fixing rod and the sleeve. The tops of the sleeve and the limiting rod are both located on the same plane.

[0010] Preferably, the sleeve and the limiting rod are detachably connected, the limiting rod and the base are fixedly connected, and the surface of the base is also provided with a hollow groove.

[0011] Preferably, there are at least three hollowed-out slots, the base is installed on the top of the hollowed-out slots, and the placement plate is fixedly connected to the electric telescopic rod.

[0012] Preferably, the fixed rod has a hollow interior, the extension telescopic rod extends vertically inside the fixed rod, a pressure sensor is provided on the bottom side of the extension telescopic rod, and a connector extends from the bottom of the pressure sensor through the hollow groove.

[0013] Preferably, the distance between the extension telescopic rod and the pressure sensor is less than the distance between the pressure surface and the top of the sleeve, and the connector is connected to the electric telescopic rod.

[0014] Preferably, the stacking table further includes a PLC controller, which is connected to the pressure sensor and the electric telescopic rod respectively.

[0015] Preferably, the base and the hollowed-out groove are detachably connected, and the top of the extension telescopic rod is located at the middle of the bottom end of the pressure surface.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a vertical lifting rod, allowing the pressure surface of the moving part of the robotic arm to rise and fall with it, ensuring that the moving part remains in a stable supporting state. Even if the moving part experiences significant swaying, the pressure surface can still absorb energy to a certain extent, thereby reducing the impact of the moving part on the material when picking up sheet materials.

[0017] This utility model further incorporates the aforementioned mechanism by setting a pressure sensor to maintain a constant distance between the sheet material placed on the placement plate and the air pump suction cup. This ensures that the power output of the air pump suction cup remains within a certain range, thereby increasing the service life of the air pump suction cup and preventing vibration caused by large negative pressure from the air pump moving parts. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a downward view of the moving part structure of this utility model; Figure 3 This is a diagram showing the lifting structure of the movable component of this utility model; Figure 4 This is a cross-sectional view of the sleeve structure of this utility model; In the diagram: 1. Robotic arm; 101. Connector; 102. Moving part; 103. Air pump suction cup; 2. Stacking table; 201. Base; 202. Limiting rod; 203. Electric telescopic rod; 204. Placement plate; 3. Sleeve; 4. Pressure surface; 5. Fixing rod; 6. Extension telescopic rod; 7. Telescopic spring; 8. Hollowed-out groove; 9. Pressure sensor; 10. Connector. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] In the attached diagram, all identical reference numerals refer to the same components.

[0021] Example 1 like Figure 1-4 As shown, this utility model provides a lithium battery stacking machine, including a robotic arm 1 and a stacking table 2. The robotic arm 1 includes a connector 101 and a moving part 102. The moving part 102 is provided with an air pump suction cup 103 on its surface. The stacking table 2 is provided with a base 201 on its surface. A limit rod 202 is installed on the top of the base 201. An electric telescopic rod 203 is installed in the middle of the stacking table 2. A placement plate 204 is installed on the top of the electric telescopic rod 203. The conventional stacking stage 2 structure is mainly used for stacking the positive and negative electrodes of lithium batteries. The mechanical structure includes multiple robotic arms 1. These robotic arms 1 use the positive and negative electrode tabs, as well as the positive and negative electrodes themselves, to fix them onto a stacking stage 2 after being secured by the air pump suction cup 103. The stacking stages 2 are arranged at equal intervals, and the multiple robotic arms 1 are correspondingly positioned. Please refer to [link / reference needed]. Figure 1 After the robotic arm 1 descends, it will use the air pump suction cup 103 to pick up the positive or negative electrode tab on the placement plate 204 and place it on a stacking stage 2, thus completing the assembly line work. Please see Figure 1Because the robotic arm 1 moves up and down, and the suction cup 103 of the air pump generates an adsorption effect, the robotic arm 1 rises rapidly. Even with the support fixed in place, the moving part 102 will still sway, forming a wing-like swing. To solve this problem, a sleeve 3 is provided on the side of the limiting rod 202 away from the placement plate 204. A vertical telescopic component is installed inside the sleeve 3. A pressure-bearing surface 4 is installed at the top of the vertical telescopic component. The vertical telescopic component is used to support the synchronous rise of the moving part 102. The extension height of the vertical telescopic component is less than the height of the moving part 102 to the top of the limiting rod 202. The distance between the pressure-bearing surface 4 and the moving part 102 does not exceed 2cm. When the robotic arm 1 moves to the stacking table 2 and descends, such as Figure 3 As shown, the vertical telescopic component will be compressed, and when it rises, it will behave as follows: Figure 2 As shown, the vertical telescopic component will rise synchronously to support the moving component 102, preventing the moving component 102 from shaking, and preventing the moving component 102 from vibrating, which could cause the positive or negative tabs, positive or negative electrodes to bend, affecting the lithium battery installation process.

[0022] Furthermore, the vertical telescopic component includes a fixed rod 5, which is located inside the sleeve 3. An extension telescopic rod 6 is provided inside the fixed rod 5. A pressure-bearing surface 4 is installed on the top of the extension telescopic rod 6. A telescopic spring 7 is connected between the pressure-bearing surface 4 and the top edge of the fixed rod 5. Its vertical telescopic components can be like Figure 1 The moving part 102 is provided with a fixed rod 5 and an extension rod 6 that cooperate with the pressure surface 4. When the moving part 102 descends, the extension rod 6 stores energy based on the extension spring 7. When it rises, the extension spring 7 pushes the extension rod 6 upward, so that the pressure surface 4 is located at the edge of the moving part 102 to provide support.

[0023] Furthermore, the fixing rod 5 and the sleeve 3 are coaxially arranged, and a connecting block is installed between the fixing rod 5 and the sleeve 3. The top of the sleeve 3 and the limiting rod 202 are both located on the same plane. The sleeve 3 and the limiting rod 202 are detachably connected, and the limiting rod 202 and the base 201 are fixedly connected. The surface of the base 201 is also provided with a hollow groove 8. There are at least three hollow grooves 8. The base 201 is installed on the top of the hollow groove 8. The placement plate 204 and the electric telescopic rod 203 are fixedly connected. The base 201 and the hollow groove 8 are detachably connected. The top of the extension telescopic rod 6 is located at the middle of the bottom end of the pressure surface 4. This allows the sleeve 3 to be directly removed from the limiting rod 202 for replacement or maintenance, and the limiting rod 202 can also be removed and replaced simultaneously; making the overall structure more versatile. When it is necessary to change the height or add other structures, such as bonding rubber pads to the pressure surface 4 and replacing the limiting rods 202 in the front and rear parts with this type of structure.

[0024] Working principle: The robotic arm 1 can move to the top of the stacking table 2 with a 2cm clearance. When descending, the moving part 102 will descend and press the extension rod 6 at the bottom from the edge until the extension spring 7 stores energy. Then, the air pump suction cup 103 can use negative pressure to adsorb and fix the positive or negative electrode on the top of the placement plate 204. When the moving part 102 rises, the extension spring 7 will spring up and push upward from both sides of the moving part 102. Even if the moving part 102 shakes, it will form an energy absorption and vibration reduction effect, so that the moving part 102 always maintains a stable state when it moves to the top. Finally, it leaves a 2cm clearance from the pressure surface 4 so that the adjacent robotic arm 1 can move to the top of this stacking table 2.

[0025] Example 2 The difference from Example 1 is that, as Figure 4 As shown, the fixed rod 5 has a hollow interior, and the extension telescopic rod 6 extends vertically inside the fixed rod 5. A pressure sensor 9 is provided on the bottom side of the extension telescopic rod 6, and a connector 10 extends through the hollow groove 8 from the bottom of the pressure sensor 9. The distance between the extension telescopic rod 6 and the pressure sensor 9 is less than the distance between the pressure surface 4 and the top of the sleeve 3. The connector 10 is connected to the electric telescopic rod 203. The stacking table 2 also includes a PLC controller, which is connected to the pressure sensor 9 and the electric telescopic rod 203 respectively.

[0026] Specifically, in order to further reduce the impact force of the air pump suction cup 103 on the moving part 102 due to negative pressure adsorption, or to avoid the bottom of the air pump suction cup 103 being too far from the positive or negative tabs, positive or negative electrodes on the placement plate 204, a pressure sensor 9 is designed inside the fixed rod 5. In conjunction with the action in Embodiment 1, when the extension telescopic rod 6 moves downward, because the distance between the extension telescopic rod 6 and the pressure sensor 9 is less than the distance between the pressure surface 4 and the top of the sleeve 3, the extension telescopic rod 6 will squeeze the pressure sensor 9, so that the pressure sensor 9 receives a pressure signal and transmits it to the PLC controller. After the pressure on the pressure sensor 9 disappears, the PLC controller will control the electric telescopic rod 203 to move, so that the placement plate 204 moves upward a certain distance. In the actual workflow, the main manifestations are as follows: after the moving part 102 descends, the placement plate 204 does not move, the air pump suction cup 103 completes the adsorption, and when the moving part 102 moves upward, the placement plate 204 moves upward synchronously by a certain distance, which is the same as the height set by the operator on the PLC controller and equal to the thickness of the positive electrode, negative electrode, positive electrode or negative electrode. This ensures that each time the robot arm 1 passes through the air pump suction cup 103 for adsorption, the distance between it and the positive electrode, negative electrode, positive electrode or negative electrode is the same, so that the power output by the air pump suction cup 103 is similar each time, without the need for manual repeated operation of the electric telescopic rod 203 or adjustment of the negative pressure suction of the air pump suction cup 103.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lithium battery stacking machine, comprising a robotic arm (1) and a stacking table (2), the robotic arm (1) comprising a connector (101) and a moving part (102), the moving part (102) having an air pump suction cup (103) on its surface, the stacking table (2) having a base (201) on its surface, a limit rod (202) being installed on the top of the base (201), an electric telescopic rod (203) being installed in the middle of the stacking table (2), and a placement plate (204) being installed on the top of the electric telescopic rod (203), characterized in that, A sleeve (3) is provided on the side of the limiting rod (202) away from the placement plate (204). A vertical telescopic component is installed inside the sleeve (3). A pressure-bearing surface (4) is installed at the top of the vertical telescopic component. The vertical telescopic component is used to support the synchronous rise of the moving component (102). The extension height of the vertical telescopic member is less than the height of the moving member (102) to the top of the limiting rod (202), and the distance between the pressure surface (4) and the moving member (102) does not exceed 2cm.

2. The lithium battery stacking machine according to claim 1, characterized in that, The vertical telescopic component includes a fixed rod (5) located inside the sleeve (3). An extension telescopic rod (6) is provided inside the fixed rod (5). A pressure-bearing surface (4) is installed on the top of the extension telescopic rod (6). A telescopic spring (7) is connected between the pressure-bearing surface (4) and the top edge of the fixed rod (5).

3. A lithium battery stacking machine according to claim 2, characterized in that, The fixing rod (5) and the sleeve (3) are coaxially arranged, and a connecting block is installed between the fixing rod (5) and the sleeve (3). The top of the sleeve (3) and the limiting rod (202) are both located on the same plane.

4. A lithium battery stacking machine according to claim 3, characterized in that, The sleeve (3) and the limiting rod (202) are detachably connected, the limiting rod (202) and the base (201) are fixedly connected, and the surface of the base (201) is also provided with a hollow groove (8).

5. A lithium battery stacking machine according to claim 4, characterized in that, The number of the hollowed-out grooves (8) is at least three, the base (201) is installed on the top of the hollowed-out grooves (8), and the placement plate (204) is fixedly connected to the electric telescopic rod (203).

6. A lithium battery stacking machine according to claim 5, characterized in that, The fixed rod (5) is hollowed out, and the extension telescopic rod (6) is located inside the fixed rod (5) and extends vertically. A pressure sensor (9) is provided on the bottom side of the extension telescopic rod (6), and the bottom of the pressure sensor (9) extends through the hollow groove (8) and has a connector (10).

7. A lithium battery stacking machine according to claim 6, characterized in that, The distance between the extension telescopic rod (6) and the pressure sensor (9) is less than the distance between the pressure surface (4) and the top of the sleeve (3), and the connector (10) is connected to the electric telescopic rod (203).

8. A lithium battery stacking machine according to claim 7, characterized in that, The stacking stage (2) also includes a PLC controller, which is connected to the pressure sensor (9) and the electric telescopic rod (203).

9. A lithium battery stacking machine according to claim 8, characterized in that, The base (201) and the hollow groove (8) are detachably connected, and the top of the extension telescopic rod (6) is located at the middle of the bottom end of the pressure surface (4).

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