Battery cover pressing device

Abstract

The utility model relates to the related technical field of battery manufacturing, in particular to a battery cover pressing device. The battery cover pressing device comprises a first conveying mechanism, a second conveying mechanism, a clamping mechanism, a pressing mechanism and a third conveying mechanism, the first conveying mechanism conveys an unprocessed battery to the second conveying mechanism, the second conveying mechanism conveys the battery to the clamping mechanism, and the battery is processed by the pressing mechanism and then conveyed to the third conveying mechanism. The utility model provides a battery cover pressing device which is excellent in design and capable of remarkably improving the efficiency, precision and reliability of battery production.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery capping device. Background Technology

[0002] The capping equipment used in battery production suffers from several problems that can affect production efficiency, yield, and equipment reliability. Firstly, insufficient positioning accuracy leads to misalignment between the battery cover and the casing, resulting in poor sealing and causing issues such as electrolyte leakage, incomplete or missed welds, and uneven compression of the sealing ring, affecting airtightness. Secondly, low automation and reliance on manual intervention mean that some equipment requires manual loading, unloading, or positioning adjustments, leading to low efficiency and potential contamination. Therefore, precise positioning and fixing of batteries during capping presents numerous challenges. Utility Model Content

[0003] In order to overcome the shortcomings of related technologies, this application provides a battery cover device.

[0004] A battery capping device includes a first conveying mechanism, a second conveying mechanism, a clamping mechanism, a pressing mechanism, and a third conveying mechanism. The first conveying mechanism conveys an unprocessed battery to the second conveying mechanism, the second conveying mechanism transmits the battery to the clamping mechanism, the pressing mechanism processes the battery, and then the battery is conveyed to the third conveying mechanism.

[0005] Furthermore, the clamping mechanism includes an upper cover plate and a lower base plate. The upper cover plate can move up and down along the column. The lower base plate is also provided with a first mold base and a second mold base that move relative to each other. The first mold base is provided with a clamping part that can clamp or release the battery.

[0006] Furthermore, the first mold base is also provided with a first inclined surface; the second mold base is provided with a second inclined surface, the first inclined surface and the second inclined surface cooperate with each other, and the second mold base is provided with a lower pad; the upper cover plate is also provided with a first sliding rod, the upper cover plate moves up and down along the first sliding rod, the bottom of the first sliding rod is provided with an upper pressure plate, the upper pressure plate and the lower pad cooperate with each other; the lower base plate is also provided with a U-shaped groove, the U-shaped groove is provided with a second sliding rod and a second circular groove, one end of the second sliding rod is fixedly connected to the first mold base, and the second sliding rod can move along the second circular groove of the U-shaped groove.

[0007] Furthermore, the pressing mechanism is located below the upper cover plate and corresponds to the clamping part. The pressing mechanism is equipped with a pressure cover upper mold core.

[0008] Furthermore, the upper mold core of the cap includes a first upper mold core and a second upper mold core.

[0009] Furthermore, the first upper mold core is provided with a first annular groove, a first annular channel, a first annular surface and a first central circular hole.

[0010] Furthermore, the first upper mold core is also provided with an outwardly protruding annular protrusion, which is used to further limit and fix the upper half of the battery after clamping.

[0011] Furthermore, the second upper mold core is provided with a second annular groove and a second central circular hole.

[0012] Furthermore, the battery capping device also includes a fourth conveying mechanism, through which the battery is conveyed from the third conveying mechanism to the fourth conveying mechanism.

[0013] Furthermore, the battery cap device also includes a support mechanism.

[0014] This application has at least one of the following beneficial effects:

[0015] 1. This application achieves high-precision positioning while maintaining stability. It employs a combination of motor-driven and mechanical positioning to ensure the accuracy of the battery cover clamping fixture, reducing sealing defects or clamping flaws caused by misalignment.

[0016] 2. This application features flexibility, enabling rapid changeover and a modular design. By replacing the clamping part, it supports rapid switching between multiple battery models, resulting in short changeover time and extremely high efficiency, thus improving tooling efficiency. The pressing mechanism under the upper cover is detachably connected and can be replaced with different molds to adapt to battery cap mold cores of different sizes. Simultaneously, the modular design of the first mold base, second mold base, and U-shaped groove facilitates maintenance and component replacement, saving costs. This application has a simple structure; through the ingenious cooperation of the first and second inclined surfaces, and the combined action of the first and second sliding rods and the spring, the clamping part cleverly clamps and releases the battery.

[0017] 3. This application avoids insufficient positioning accuracy and prevents poor sealing caused by misalignment between the battery cover and the casing. It also solves many problems such as electrolyte leakage, incomplete / missing welds, and uneven compression of the sealing ring, which affect airtightness. This application has a high degree of automation. Except for the replacement of the clamping part and the replacement of the upper mold core of the battery cover, which require manual intervention, only some parts of the equipment require manual loading and unloading or positioning adjustment, making it efficient and less prone to contamination.

[0018] 4. The second conveying mechanism, clamping mechanism and pressing mechanism of this application are cleverly coordinated to provide a well-designed battery capping device that can significantly improve the efficiency, accuracy and reliability of battery production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the overall structure of the core part in the embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the structure of the first conveying mechanism in the embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the second conveying mechanism structure in an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the clamping mechanism structure in an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the first mold base structure in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the second mold base structure in an embodiment of this application.

[0026] Figure 8 This is a schematic diagram of the second and third protrusion structures in an embodiment of this application.

[0027] Figure 9 This is a schematic diagram of the structure in which the second inclined surface and the first inclined surface cooperate in an embodiment of this application.

[0028] Figure 10 This is a schematic diagram of the second sliding rod structure in an embodiment of this application.

[0029] Figure 11 This is a schematic diagram of the unprocessed battery structure in an embodiment of this application.

[0030] Figure 12 This is a schematic diagram of the structure of the battery after processing with the first upper mold core according to an embodiment of this application.

[0031] Figure 13 This is a schematic diagram of the structure of the battery after processing with the second upper mold core according to the embodiment of this application.

[0032] Figure 14 This is a schematic diagram of the pressing mechanism in an embodiment of this application.

[0033] Figure 15 This is a schematic diagram of the first upper mold core structure in an embodiment of this application.

[0034] Figure 16 This is a schematic diagram of the second upper mold core structure in the embodiment of this application.

[0035] Figure 17 This is a schematic diagram of the third and fourth transmission mechanisms in the embodiments of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Upper cover plate; 2. Lower base plate; 3. Column; 4. First mold base; 5. First sliding groove; 6. First inclined surface; 7. First circular groove; 8. Clamping part; 9. First slot; 10. Shim; 11. First protrusion; 21. Second mold base; 22. Sliding protrusion; 23. T-slot; 24. First square hole; 25. Second protrusion; 26. Third protrusion; 27. Second inclined surface; 28. Lower pad plate; 40. First circular hole; 41. First 42. Sliding rod; 43. First spring; 50. Upper pressure plate; 51. U-shaped groove; 52. Second circular groove; 53. Second spring; 54. Second sliding rod; 55. Conveyor plate; 96. Main motor; 97. Support mechanism; 98. Lower support part; 99. Upper support block; 100. Battery; 101. First conveying mechanism; 102. First conveying groove; 103. First rotating motor; 104. First rotating shaft; 105. First conveying disc; 106. First conveyor... 106. Base plate; 200. First fixed plate; 201. Second conveying mechanism; 201. Second conveying base plate; 202. Second conveying assembly; 203. Second electric push rod; 204. Arc groove; 205. Z-shaped fixing component; 300. Clamping mechanism; 400. Pressing mechanism; 500. Third conveying mechanism; 501. Third conveying assembly; 502. Third conveying groove; 600. Fourth conveying mechanism; 601. Fourth conveying assembly; 602. Fourth conveying... 700, First upper mold core; 701, circumferential protrusion; 702, first annular groove; 703, first annular groove; 704, first annular surface; 705, first central circular hole; 706, reinforcing ring; 800, second upper mold core; 801, second annular groove; 802, second central circular hole; 901, annular upper flange; 902, first circular protrusion; 903, second circular protrusion; 911, first curved portion; 912, upper surface of curved portion. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-17 This application will be described in further detail.

[0038] Reference Figure 1 and Figure 2 A battery capping device includes a first conveying mechanism 100, a second conveying mechanism 200, a clamping mechanism 300, a pressing mechanism 400, a third conveying mechanism 500, a fourth conveying mechanism 600, and a supporting mechanism 96.

[0039] The support mechanism 96 includes an upper support block 98 and a lower support portion 97. The upper support block 98 is disposed above the lower support portion 97, and the lower support portion 97 supports the entire battery cover device. The upper support block 98 supports a first conveying mechanism 100, a second conveying mechanism 200, a clamping mechanism 300, a pressing mechanism 400, a third conveying mechanism 500, and a fourth conveying mechanism 600.

[0040] Reference Figure 3 The first conveying mechanism 100 includes a first conveying trough 101, a first rotating motor 102, and a first conveyor belt. The first conveying trough 101 is used to place the battery 99. The first conveyor belt is disposed below the first conveying trough 101. Two first conveying discs 104 are disposed at both ends of the first conveyor belt. The first rotating motor 102 and one of the first conveying discs 104 are connected by a first rotating shaft 103. The first rotating motor 102 can drive the first conveying disc 104 and the first conveyor belt to move. A first conveying base plate 105 is fixedly disposed below the first conveyor belt. The first conveying base plate 105 is fixedly connected to a first fixing plate 106. The first fixing plate 106 is fixedly connected to the side wall of the upper support block 98.

[0041] Reference Figure 4 The second conveying mechanism 200 includes a second conveying base plate 201 and a second conveying assembly 202. The second conveying base plate 201 is fixed to the first conveying base plate 105 and perpendicular to the first conveying base plate 105. A sliding rail is provided on the second conveying base plate 201. A second electric push rod 203 is provided inside the second conveying assembly 202. The second conveying assembly 202 moves back and forth on the sliding rail under the push of the second electric push rod 203. The second conveying assembly 202 is also provided with an arc-shaped groove 204. The opening of the arc-shaped groove 204 faces the conveying direction of the first conveying mechanism 100. When the second conveying assembly 202 moves to the conveying port of the first conveying mechanism 100 under the push of the second electric push rod 203, the battery 99 is transferred from the first conveying mechanism 100 to the arc-shaped groove 204 of the second conveying assembly 202 and continues to move forward, being conveyed to the clamping mechanism 300.

[0042] The second conveying mechanism 200 is also provided with a Z-shaped fixing component 205 on its side for further reinforcement. The Z-shaped fixing component 205 is close to a "Z" shape when viewed from the side, but it is not an inclined bend in a "Z". The bent part of the Z-shaped fixing component 205 is set vertically upward and perpendicular to the first conveying base plate 105. The bottom of the Z-shaped fixing component is fixedly connected to the first conveying base plate 105. The side wall and top of the Z-shaped fixing component 205 serve to guide and limit the second conveying assembly 202.

[0043] Reference Figure 5 The clamping mechanism 400 includes an upper cover plate 1 and a lower base plate 2. A column 3 is provided on the lower base plate 2, and the upper cover plate 1 can move up and down along the column 3. A first mold base 4 and a second mold base 21 that move in coordination with each other are also provided on the lower base plate 2.

[0044] Reference Figure 6The first mold base 4 is provided with a clamping part 8, which is detachably installed in the mounting groove of the first mold base 4. The clamping part 8 can clamp or release the battery 99. In this embodiment, the clamping part 8 is configured as two opposing semi-circular components, each of which is provided with a semi-circular groove. This application features flexibility, enabling rapid model changeover. The modular design allows for rapid switching between multiple battery models by replacing the clamping parts 8 of different shapes, resulting in short changeover time and extremely high efficiency, thus improving tooling efficiency.

[0045] The first mold base 4, viewed from the side, is approximately "Z"-shaped. The bent portion of the first mold base 4 is vertically upward, perpendicular to the lower base plate 2, rather than being an inclined bend as in the "Z". The first mold base 4 has two parallel and symmetrical first sliding grooves 5, forming a first protrusion 11 between the two first sliding grooves 5. The first protrusion 11 has a first inclined surface 6. The first mold base 4 has a first retaining groove 9 and a shim 10 that mates with the first retaining groove 9 in the horizontal direction. The end of the shim 10 facing the center of the semi-circular groove is square, and the end of the shim 10 away from the center of the semi-circular groove is arched. The shim 10 is inserted into the first retaining groove 9, with both ends passing through the first retaining groove 9 and protruding from it. The arched end of the shim 10 has an elliptical groove that rests on the surface of the second mold base 21 and is fixed with screws or locating pins. The shim 10 acts as a guide rail for the movement of the first mold base 4, used for precise positioning and clamping of the battery.

[0046] Reference Figure 7 and Figure 8 The second mold base 21 is provided with a T-slot 23 for vertically inserting the second protrusion 25 and the third protrusion 26. The second mold base 21 also has a first square hole 24. The first square hole 24 is configured to penetrate the second mold base 21 horizontally. The first square hole 24 engages with the first protrusion 11, allowing the first protrusion 11 to move back and forth within the first square hole 24. Two parallel and symmetrical sliding protrusions 22 are formed on both sides of the first square hole 24, and two first sliding grooves 5 can respectively engage with the two sliding protrusions 22 for relative movement. The engagement of the first square hole 24 and the first protrusion 11, and the engagement of the first sliding grooves 5 and the sliding protrusions 22, also serve a guiding function, guiding the movement direction of the first mold base 4. The second protrusion 25 is a rectangular protrusion, with its sidewall fitting snugly against the head of the T-slot 23. The bottom of the second protrusion 25 is fixedly connected to the lower base plate 2, serving to limit the movement of the third protrusion 26. The third protrusion 26 is a rectangular protrusion with its sidewall fitting the lower half "l" of the T-slot 23. However, the bottom of the third protrusion 26 is also provided with a second inclined surface 27, which faces the first inclined surface 6. The first inclined surface 6 and the second inclined surface 27 can cooperate to generate relative displacement. The top of the third protrusion 26 is provided with a lower pad 28.

[0047] Reference Figure 9The upper cover plate 1 has a first circular hole 40, which moves up and down along a first sliding rod 41. A first spring 42 is provided on the first sliding rod 41, and an upper pressure plate 43 is provided at the bottom of the first sliding rod 41, cooperating with a lower pad 28. A main motor 95 is connected to the top of the first sliding rod 41, pushing the upper cover plate 1 up and down. A mold mounting groove is provided at the bottom of the upper cover plate 1, which can be detachably connected to a pressing mechanism 400. The mold is replaceable to accommodate upper mold cores of battery caps of different sizes, used for pressing and cutting battery caps or other pressing operations. This application achieves high-precision positioning while maintaining stability, employing a hybrid electro-mechanical positioning method to ensure the accuracy of the clamping mechanism 400. This reduces sealing defects or clamping flaws caused by misalignment.

[0048] Reference Figure 10 The lower base plate 2 is also provided with a U-shaped groove 50, the inner wall of which surrounds the outer wall of the second mold base 21. The U-shaped groove 50 is fixedly connected to the lower base plate 2. Two second circular grooves 51 are respectively provided on both sides of the U-shaped groove 50. The second sliding rod 53 passes through the second circular groove 51, and one end is inserted into the first circular groove 7 and fixedly connected to the first mold base 4. The end of the second sliding rod 53 near the first mold base 4 can cooperate with the first circular groove 7 of the first mold base 4. The second sliding rod 53 can move along the second circular groove 51. A second spring 52 is provided on the second sliding rod 53, and a rod cap is provided at the other end of the second sliding rod 53 to limit the second spring 52.

[0049] The modular design of the first mold base 4, the second mold base 21, and the U-shaped groove 50 in this application facilitates maintenance and replacement of parts, saving costs.

[0050] A conveyor plate 54 is disposed at the center of the lower base plate 2. The upper surface of the conveyor plate 54 is flush with the upper surface of the second conveyor base plate 201 of the second conveyor mechanism 200. It works in conjunction with the second conveyor assembly 202 of the second conveyor mechanism 200 to convey batteries.

[0051] Reference Figure 11 The unprocessed battery 99 of this application has an annular upturned edge 901. The top of the unprocessed battery 99 is provided with a first circular protrusion 902 and a second circular protrusion 903. The second circular protrusion 903 is larger in volume than the first circular protrusion 902. The second circular protrusion 903 is fixed to the upper surface of the top of the battery 99, and the first circular protrusion 902 is coaxially disposed above the second circular protrusion 903. An annular upturned edge 901 is also provided around the top perimeter of the battery 99.

[0052] Reference Figure 14 , Figure 15 and Figure 16In this embodiment of the application, the upper mold core of the cover includes a first upper mold core 700 and a second upper mold core 800. The first upper mold core 700 is provided with an outwardly protruding annular protrusion 701, which is used to further limit and fix the upper half of the battery 99 after clamping. A reinforcing ring 706 is also provided outside the annular protrusion 701 to increase the internal stability of the first upper mold core 700. The first upper mold core 700 is also provided with a first annular groove 702, a first annular groove 703, a first annular surface 704, and a first central circular hole 705; the annular upper flange 901 cooperates with the first annular groove 702, and the annular upper flange 901 can be inserted into the first annular groove 702; the first circular protrusion 902 fits into the first central circular hole 705, and is just inserted into the first central circular hole 705; the top surface of the second circular protrusion 903 is in contact with the first annular surface 704. When the first upper mold core 700 presses down on the battery 99, the first annular groove 702 and the first annular groove 703 work together on the annular upper flange 901, as shown in the figure. Figure 12 The annular upper flange of battery 99 is processed into the first curved part 911.

[0053] The second upper mold core 800 is provided with a second annular groove 801 and a second central circular hole 802. The second circular protrusion 903 fits into the second central circular hole 802 and is inserted into the second central circular hole 802. The second annular groove 801 acts on the first curved portion 911. (Refer to...) Figure 13 The upper surface 912 of the curved part of battery 99 is further smoothed by pressing and polishing.

[0054] The second conveying mechanism 200, the clamping mechanism 300, and the pressing mechanism 400 of this application work together in a clever manner to provide a well-designed battery capping device that can significantly improve the efficiency, accuracy, and reliability of battery production.

[0055] The battery 99 is processed at three processing positions in the clamping part 8. Under the action of the second transmission mechanism 200, it stops at the first upper mold core 700 for processing at the first processing position, stops at the second upper mold core 800 for processing at the second processing position, and is pushed out by the second transmission mechanism 200 to the third transmission mechanism 500 at the third processing position.

[0056] Reference Figure 17The third conveying mechanism 500 includes a third conveying component 501 and a third conveying groove 502. Both the third conveying component 501 and the third conveying groove 502 are fixedly mounted on the lower base plate 2 and perpendicular to the second conveying mechanism 200. The third conveying component 501 and the third conveying groove 502 are respectively located on both sides of the third processing position of the second conveying mechanism 200. The third conveying component 501 conveys the battery 99, which has undergone two processing steps by the clamping part 8, to the third conveying groove 502. A conveyor belt is installed inside the third conveying groove 502 to guide the battery 99 out. When the third conveying mechanism 500 conveys the battery 99 to the conveying port of the fourth conveying mechanism 600, the battery 99 further changes direction and is conveyed out.

[0057] The structure of the fourth conveying mechanism 600 includes a fourth conveying component 601 and a fourth conveying groove 602, which is similar to the structure of the third conveying mechanism 500 and has the same working principle. The movement direction of the fourth conveying mechanism 600 is parallel to the second conveying mechanism 200 and perpendicular to the third conveying mechanism 500. The fourth conveying groove 602 is longer than the third conveying groove 502, which is only to further change the movement direction of the battery 99 and facilitate the collection of the processed battery 99.

[0058] The first sliding rod 41 and the column 3 are connected to the main motor 95, which provides power to the clamping part 8 and to the electric linkages of multiple transmission mechanisms.

[0059] The working principle of this application embodiment:

[0060] Unprocessed batteries 99 enter the first conveying groove 101. The first conveying mechanism 100 conveys the unprocessed batteries 99 to the second conveying mechanism 200. The second conveying mechanism 200 then transmits the batteries 99 to the clamping mechanism 300. Under the action of the main motor 95, the upper cover plate 1 moves downward, compressing the first spring 42. The upper pressure plate 43 presses against the lower pad 28, which in turn causes the third protrusion 26 to move downward. The second inclined surface 27 presses against the first inclined surface 6, which in turn causes the first mold base 4 to move towards the center of the lower base plate 2. The two semi-circular components of the clamping part 8 move closer to each other, clamping the battery. At the same time, the first mold base 4 causes the second sliding rod 53 to move towards the center of the lower base plate 2, compressing the second spring 52.

[0061] The clamped battery 99 is processed by the first upper mold core 700 of the pressing mechanism 400. When the second spring 52 is compressed to a certain extent, it will return to its original shape and generate elastic force. The second sliding rod 53 drives the first mold base 4 to move outward away from the center of the lower base plate 2. The two semi-circular components of the clamping part 8 move away from each other. The first inclined surface 6 presses against the second inclined surface 27, and the third protrusion 26 drives the lower pad 28 to move upward. When the first spring 42 is compressed to a certain extent, it will return to its original shape and generate elastic force, lifting the upper cover plate 1 upward. The upper pressure plate 43 no longer presses against the lower pad 28. The battery is released from the clamping part.

[0062] The battery 99 is transferred by the second conveying mechanism 200 to the second upper mold core 800 for a second processing. The clamping and releasing process is repeated. The second conveying mechanism 200 then transfers the battery to the third conveying mechanism 500, and the third conveying mechanism 500 then transfers the battery to the fourth conveying mechanism 600. The battery is then discharged and collected in the fourth conveying mechanism 600.

[0063] In summary, this application features a simple structure. The second conveying mechanism 200, clamping mechanism 300, and pressing mechanism 400 work ingeniously together to provide a well-designed battery capping device that significantly improves the efficiency, accuracy, and reliability of battery production. Through the precise coordination of the first inclined surface 6 and the second inclined surface 27, and under the combined action of the first sliding rod 41, the second sliding rod 53, and the spring, the clamping part 8 effectively clamps and releases the battery. This application avoids insufficient positioning accuracy and misalignment between the battery cover and the casing, preventing poor sealing and solving numerous problems such as electrolyte leakage, incomplete / missing welds, uneven compression of the sealing ring, and impact on airtightness. This application has a high degree of automation; except for manual intervention in changing the clamping part 8 and the upper mold core of the battery cap, only some parts of the equipment require manual loading / unloading or positioning adjustments, making it highly efficient and less prone to contamination.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery capping device, characterized in that, It includes a first conveying mechanism (100), a second conveying mechanism (200), a clamping mechanism (300), a pressing mechanism (400), and a third conveying mechanism (500); the first conveying mechanism (100) conveys the unprocessed battery (99) to the second conveying mechanism (200), the second conveying mechanism (200) transmits the battery (99) to the clamping mechanism (300), and after processing by the pressing mechanism (400), the battery (99) is then conveyed to the third conveying mechanism (500).

2. The battery capping device according to claim 1, characterized in that, The clamping mechanism (300) includes an upper cover plate (1) and a lower base plate (2). The upper cover plate (1) can move up and down along the column (3). The lower base plate (2) is also provided with a first mold base (4) and a second mold base (21) that move relative to each other. The first mold base (4) is provided with a clamping part (8) that can clamp or release the battery (99).

3. The battery capping device according to claim 2, characterized in that, The first mold base (4) is also provided with a first inclined surface (6); the second mold base (21) is provided with a second inclined surface (27), the first inclined surface (6) and the second inclined surface (27) cooperate with each other, and the second mold base (21) is provided with a lower pad (28); the upper cover plate (1) is also provided with a first sliding rod (41), the upper cover plate (1) moves up and down along the first sliding rod (41), the bottom of the first sliding rod (41) is provided with an upper pressure plate (43), the upper pressure plate (43) and the lower pad (28) cooperate with each other; the lower base plate (2) is also provided with a U-shaped groove (50), the U-shaped groove (50) is provided with a second sliding rod (53) and a second circular groove (51), one end of the second sliding rod (53) is fixedly connected to the first mold base (4), and the second sliding rod (53) can move along the second circular groove (51) of the U-shaped groove (50).

4. The battery capping device according to claim 3, characterized in that, The pressing mechanism (400) is located below the upper cover plate (1) and corresponds to the clamping part (8). The pressing mechanism (400) is provided with a pressure cover upper mold core.

5. The battery capping device according to claim 4, characterized in that, The upper mold core of the pressure cap includes a first upper mold core (700) and a second upper mold core (800).

6. The battery capping device according to claim 5, characterized in that, The first upper mold core (700) is provided with a first annular groove (702), a first annular groove (703), a first annular surface (704) and a first central circular hole (705).

7. The battery capping device according to claim 6, characterized in that, The first upper mold core (700) is also provided with an outwardly protruding annular protrusion (701) for further limiting and fixing the upper half of the battery (99) after clamping.

8. The battery capping device according to claim 7, characterized in that, The second upper mold core (800) is provided with a second annular groove (801) and a second central circular hole (802).

9. The battery capping device according to claim 1, characterized in that, The battery capping device also includes a fourth conveying mechanism (600), through which the battery (99) is conveyed to the fourth conveying mechanism (600) after passing through the third conveying mechanism (500).

10. The battery capping device according to claim 1, characterized in that, The battery cap device also includes a support mechanism (96).

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