Lithium battery cap rubber ring assembly machine
By coordinating the expansion rod and expansion column, the problems of low efficiency and high cost in assembling the cap seal of lithium batteries are solved, achieving efficient and low-cost seal assembly and ensuring the sealing and safety of lithium batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-03-31
AI Technical Summary
Existing lithium battery cap and rubber ring assembly technology is inefficient, relies on manual skill levels, resulting in unstable assembly quality, and semi-automated equipment is costly, affecting the sealing and safety of lithium batteries.
The device employs a simple structure consisting of an expansion rod, an expansion column, and an L-shaped limiting plate. Through the coordinated operation of the expansion rod and the expansion column, the rubber ring is quickly assembled onto the lithium battery cap. The guide column and rollers reduce friction, ensuring the stability and precision of the rubber ring.
This improves the ease of assembly of lithium battery caps and rubber rings, reduces costs, ensures assembly quality and stability, and enhances production efficiency.
Smart Images

Figure CN224059740U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery production technology, specifically to a lithium battery cap rubber ring assembly machine. Background Technology
[0002] With the increasing global demand for clean energy, lithium batteries, as a high-efficiency and environmentally friendly energy storage device, have been widely used in many fields such as electric vehicles and electronic devices. The production quality and efficiency of lithium batteries directly affect their performance and market competitiveness. Among them, the assembly of the lithium battery cap rubber ring is a key link in the production process. The quality of the rubber ring assembly is related to the sealing performance, safety and service life of the lithium battery. Therefore, it is crucial to develop efficient and precise lithium battery cap rubber ring assembly technology.
[0003] Currently, in the existing technologies for assembling the rubber rings of lithium battery caps, some are assembled manually. Operators first manually put the rubber rings on specific auxiliary tools, then use some simple clamps to align the rubber rings with the lithium battery caps, and then manually press the rubber rings onto the caps. There are also some semi-automated devices that use robotic arms to grab the rubber rings, move the rubber rings to the top of the lithium battery caps through positioning devices, and then rely on a pressing mechanism to assemble the rubber rings onto the caps. These existing technologies can complete the assembly of the rubber rings to a certain extent.
[0004] However, existing technologies have many shortcomings. Manual assembly is not only inefficient and difficult to meet the needs of large-scale production, but also the assembly quality largely depends on the operator's skill level and working condition, which can easily lead to assembly deviations, resulting in poor sealing of the rubber ring and affecting the performance and safety of lithium batteries. Although semi-automated equipment improves production efficiency to a certain extent, the structure of the robotic arm is often more complex and the maintenance cost is high, which further increases the production cost of lithium batteries. Therefore, we propose a lithium battery cap rubber ring assembly machine. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a lithium battery cap and rubber ring assembly machine, which has a low cost and improves the convenience of assembling lithium battery caps and rubber rings, and can effectively solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery cap and rubber ring assembly machine, including a workbench, a lithium battery cap platform on the upper side of the workbench, and a rubber ring installation mechanism;
[0007] The rubber ring installation mechanism includes an expansion rod, an expansion column, a mounting column, and an L-shaped limiting plate. The expansion rod is respectively set on the left and right sides of the lithium battery cap platform. The front and rear ends of the lower side of the expansion rod are provided with expansion columns. The outer ends of the two expansion rods are slidably connected to the mounting columns. The lower end of each mounting column is provided with an L-shaped limiting plate. The two L-shaped limiting plates are symmetrically arranged on the left and right sides. The L-shaped limiting plates are located between two adjacent front and rear expansion columns. Through the coordinated cooperation of the simple structure of the expansion rod, expansion column, and L-shaped limiting plate, the rubber ring can be quickly assembled onto the lithium battery cap, which greatly improves the convenience of assembling the lithium battery cap and the rubber ring. At the same time, the structure is simple and the use cost is low.
[0008] Furthermore, the rubber ring installation mechanism also includes an installation frame, an installation chamber, and inclined grooves. The installation frame is located in the middle of the upper side of the workbench. The installation chamber is located in the middle of the installation frame. Inclined grooves are symmetrically distributed on the front and rear inner walls of the installation chamber. The front and rear sides of the expansion rod are provided with first guide posts. The end of the first guide post away from the center of the installation chamber is slidably connected to the adjacent inclined grooves on the front and rear sides to provide sliding support and guidance.
[0009] Furthermore, the upper and lower inner walls of the inclined groove are provided with first mounting grooves, and the front and rear inner walls of the first mounting grooves are rotatably connected with evenly distributed first rollers. The outer arc surfaces of the first rollers are in contact with the outer arc surfaces of the first guide posts located inside the same inclined groove, thereby reducing friction and improving sliding stability.
[0010] Furthermore, the rubber ring installation mechanism also includes a sliding groove. The sliding groove is provided on the rear inner wall of the installation chamber. The upper end of each installation column is provided with a second guide column. The rear end of each second guide column is slidably connected to the adjacent sliding groove on the rear side to provide sliding support and guidance.
[0011] Furthermore, the upper and lower inner walls of the slide groove are provided with second mounting grooves, and the front and rear inner walls are rotatably connected with evenly distributed second rollers. The rear outer arc surface of the second guide post is in contact with the adjacent upper and lower second rollers, reducing friction and improving sliding stability.
[0012] Furthermore, the rubber ring installation mechanism also includes a drive shaft. The upper rear side of the expansion rod is provided with a drive shaft. The outer arc surface of the drive shaft is rotatably connected to a connecting rod. The rear inner wall of the installation chamber is provided with a guide groove. The drive frame is slidably connected inside the guide groove. The column at the lower end of the drive frame is rotatably connected to the upper ends of the two connecting rods respectively, which facilitates the movement of the expansion rod.
[0013] Furthermore, a control switch is provided on the upper side of the workbench, and the input end of the control switch is electrically connected to an external power source. An electric cylinder is installed on the upper side of the mounting frame, and the telescopic end of the electric cylinder passes through the upper end of the mounting frame and the upper side wall of the mounting compartment in sequence and is fixedly connected to the upper side of the drive frame. The input end of the electric cylinder is electrically connected to the output end of the control switch for stable driving.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This lithium battery cap and rubber ring assembly machine has the following advantages:
[0015] The rubber ring installation mechanism works in conjunction with the expansion rod and expansion column to quickly expand the rubber ring pre-fitted on the expansion column. The L-shaped limiting plate at the lower end of the installation column can precisely limit the position of the rubber ring, prevent displacement, and ensure that the rubber ring can expand stably. At the same time, through the synergistic cooperation of the simple structure of the expansion rod, expansion column and L-shaped limiting plate, the rubber ring on the expansion column can be quickly assembled onto the lithium battery cap, which greatly improves the convenience of assembling the lithium battery cap and the rubber ring. At the same time, the structure is simple and the cost of use is low. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the front plane of the present invention;
[0018] Figure 3 This is an enlarged structural schematic diagram of point A of this utility model;
[0019] Figure 4 This is a schematic diagram of the front sectional view of the installation compartment of this utility model;
[0020] Figure 5 This is an enlarged structural schematic diagram of section B of this utility model;
[0021] Figure 6 This is a schematic diagram of the front cross-section of the present invention.
[0022] In the diagram: 1. Workbench, 2. Rubber ring installation mechanism, 21. Mounting frame, 22. Mounting chamber, 23. Inclined groove, 231. First mounting groove, 232. First roller, 24. Expansion rod, 25. Expansion column, 26. Slide groove, 261. Second mounting groove, 262. Second roller, 27. Mounting column, 28. L-shaped limit plate, 29. Drive shaft, 3. Lithium battery cap platform, 4. First guide column, 5. Second guide column, 6. Drive frame, 7. Guide slide groove, 8. Electric cylinder, 9. Control switch, 10. Connecting rod. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-6 This embodiment provides a technical solution: a lithium battery cap rubber ring assembly machine, including a workbench 1, a lithium battery cap platform 3 on the upper side of the workbench 1, and a rubber ring installation mechanism 2.
[0025] The rubber ring installation mechanism 2 includes an expansion rod 24, an expansion column 25, a mounting column 27, and an L-shaped limiting plate 28. The expansion rod 24 is respectively set on the left and right sides of the lithium battery cap platform 3. The front and rear ends of the lower side of the expansion rod 24 are provided with expansion columns 25. The outer ends of the two expansion rods 24 are slidably connected to the mounting columns 27. The lower end of the mounting column 27 is provided with an L-shaped limiting plate 28. The two L-shaped limiting plates 28 are symmetrically arranged on the left and right sides and are located between two adjacent front and rear expansion columns 25. The rubber ring installation mechanism 2 also includes an installation frame 21, an installation chamber 22, and an inclined groove 23. The installation frame 21 is set in the middle of the upper side of the workbench 1. The middle of the installation frame 21 is provided with the installation chamber 22. The front and rear inner walls of the installation chamber 22 are provided with left and right... The inclined grooves 23 are symmetrically distributed. First guide posts 4 are provided on both the front and rear sides of the expansion rod 24. The ends of the first guide posts 4 furthest from the center of the mounting chamber 22 are slidably connected to the adjacent inclined grooves 23. First mounting grooves 231 are provided on the upper and lower inner walls of the inclined grooves 23. First rollers 232 are rotatably connected between the front and rear inner walls of the first mounting grooves 231. The outer arc surfaces of the first rollers 232 are in contact with the outer arc surfaces of the first guide posts 4 located within the same inclined groove 23. The rubber ring mounting mechanism 2 also includes a sliding groove 26. A sliding groove 26 is provided on the rear inner wall of the mounting chamber 22. Second guide posts 5 are provided at the upper ends of the mounting posts 27. The rear ends of the second guide posts 5 are slidably connected to the adjacent sliding grooves 26. First mounting grooves 231 are provided on both the upper and lower inner walls of the sliding grooves 26. The front and rear inner walls of the second mounting groove 261 are rotatably connected to evenly distributed second rollers 262. The outer arc surface of the rear end of the second guide column 5 is in contact with the adjacent second rollers 262. The rubber ring mounting mechanism 2 also includes a drive shaft 29. The upper rear side of the expansion rod 24 is provided with a drive shaft 29. The outer arc surface of the drive shaft 29 is rotatably connected to a connecting rod 10. The rear inner wall of the mounting chamber 22 is provided with a guide groove 7. The drive frame 6 is slidably connected inside the guide groove 7. The column at the lower end of the drive frame 6 is rotatably connected to the upper ends of the two connecting rods 10 respectively. The upper side of the worktable 1 is provided with a control switch 9. The input end of the control switch 9 is electrically connected to an external power source. The upper side of the mounting frame 21 is provided with an electric cylinder 8. The telescopic end of the electric cylinder 8 passes through the mounting frame in sequence. The upper end of 21 and the upper side wall of the mounting chamber 22 are fixedly connected to the upper side of the drive frame 6. The input end of the electric cylinder 8 is electrically connected to the output end of the control switch 9. When assembling the lithium battery cap rubber ring, the operator first places the lithium battery cap to be assembled on the lithium battery cap platform 3. Then, the operator starts the electric cylinder 8 through the control switch 9. The input end of the electric cylinder 8 is electrically connected to the output end of the control switch 9. The electric cylinder 8 starts working when the power is turned on. The telescopic end of the electric cylinder 8 extends downward, pushing the drive frame 6 to slide downward in the guide groove 7. When the drive frame 6 moves downward, it will drive the connecting rod 10 to rotate around the drive shaft 29. The rotation of the connecting rod 10 will then push the expansion rod 24 to move outward along the trajectory of the inclined groove 23 (moving downward at the same time as moving outward).During this process, the first guide post 4 remains inside the inclined groove 23, and the first roller 232 contacts the outer arc surface of the first guide post 4. This not only reduces the friction when the expansion rod 24 moves, but also makes the movement of the expansion rod 24 smoother. As the expansion rod 24 moves outward, the expansion posts 25 at both ends of its lower side also expand outward. At this time, the rubber rings pre-fitted on the expansion posts 25 are gradually stretched open. While the expansion rod 24 moves outward, it drives the mounting post 27 to move outward synchronously. During this process, due to the restriction of the second guide post 5 and the sliding groove 26, the mounting post 27 can only move horizontally. The second roller 262 contacts the outer arc surface of the rear end of the second guide post 5, ensuring that the mounting post 27 moves smoothly. The L-shaped limiting plate 28 at the lower end of the mounting post 27 moves with the mounting post 27. Located between two adjacent expansion posts 25, the L-shaped limiting plate 28 restricts the position of the rubber ring (the edge of the rubber ring is always inside the L-shaped limiting plate 28), preventing the rubber ring from shifting during expansion. When the expansion rod 24 moves to the appropriate position and the rubber ring is expanded enough to fit over the lithium battery cap, the control switch 9 controls the electric cylinder 8 to retract. The drive frame 6 slides upward within the guide groove 7, causing the connecting rod 10 to rotate in the opposite direction. This causes the expansion rod 24 to move inward along the inclined groove 23 to reset, while the L-shaped limiting plate 28 restricts the height of the rubber ring and pushes it down from the expansion post 25, fitting it over the lithium battery cap. At this point, the rubber ring installation is complete, facilitating rubber ring assembly.
[0026] The working principle of the lithium battery cap rubber ring assembly machine provided by this utility model is as follows: When assembling lithium battery cap rubber rings, the operator first places the lithium battery cap to be assembled on the lithium battery cap platform 3. Then, the operator starts the electric cylinder 8 through the control switch 9. The input end of the electric cylinder 8 is electrically connected to the output end of the control switch 9. The electric cylinder 8 starts working after being powered on. The telescopic end of the electric cylinder 8 extends downward, pushing the drive frame 6 to slide downward in the guide groove 7. When the drive frame 6 moves downward, it will drive the connecting rod 10 to rotate around the drive shaft 2. 9 rotates, and the rotation of connecting rod 10 pushes the expansion rod 24 to move outward along the trajectory of inclined groove 23 (moving outward and downward at the same time). During this process, the first guide post 4 is always inside the inclined groove 23, and the first roller 232 is in contact with the outer arc surface of the first guide post 4. This not only reduces the friction when the expansion rod 24 moves, but also makes the movement of the expansion rod 24 more stable and smooth. As the expansion rod 24 moves outward, the expansion posts 25 at the front and rear ends of its lower side also expand outward. At this time, the expansion posts 25 pre-fitted into the expansion posts 232... The rubber ring on the second guide post 24 will be gradually stretched outwards. As the expansion rod 24 moves outwards, the mounting post 27 will move outwards synchronously. During this process, due to the restriction of the second guide post 5 and the slide groove 26, the mounting post 27 can only move horizontally. The second roller 262 contacts the outer arc surface of the rear end of the second guide post 5 to ensure the smooth movement of the mounting post 27. The L-shaped limiting plate 28 at the lower end of the mounting post 27 will move with the mounting post 27. The L-shaped limiting plate 28 is located between two adjacent expansion posts 25 and plays the role of limiting the position of the rubber ring. (The edge of the rubber ring is always inside the L-shaped limiting plate 28) to prevent the rubber ring from shifting during the expansion process. When the expansion rod 24 moves to the appropriate position and the rubber ring is expanded enough to fit on the lithium battery cap, the control switch 9 controls the electric cylinder 8 to retract. The drive frame 6 slides upward in the guide groove 7, driving the connecting rod 10 to rotate in the opposite direction, so that the expansion rod 24 moves inward along the inclined groove 23 to reset. The L-shaped limiting plate 28 restricts the height position of the rubber ring and pushes the rubber ring down the expansion column 25 to fit on the lithium battery cap. At this time, the rubber ring installation is completed.
[0027] It is worth noting that the electric cylinder 8 disclosed in the above embodiments can be an MCM series electric cylinder, and the control switch 9 is provided with a control button corresponding to the electric cylinder 8 and used to control its switch.
[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A lithium battery cap bead assembling machine, comprising a workbench (1), the upper side of the workbench (1) is provided with a lithium battery cap platform (3), characterized in that: It also includes rubber ring mounting mechanism (2); The rubber ring mounting mechanism (2) further includes mounting frame (21), mounting bin (22) and chute (23), the mounting frame (21) is arranged in the upper side middle part of the workbench (1), the middle part of mounting frame (21) is equipped with mounting bin (22), the front and rear inner walls of mounting bin (22) are all opened with left and right symmetrical distribution's chute (23), the front and rear sides of the expansion rod (24) are all equipped with the first guide column (4), the end of the first guide column (4) away from the center of mounting bin (22) is all slidably connected with the adjacent chute (23) in front and back.
2. The lithium battery cap gasket assembling machine according to claim 1, characterized in that: The upper and lower inner walls of the chute (23) are all opened with the first installation groove (231), the front and rear inner walls of the first installation groove (231) are all rotatably connected with the first roller (232) that is evenly distributed, the outer arc surface of the first roller (232) is all in contact with the outer arc surface of the first guide column (4) located in the same chute (23) inside.
3. The lithium battery cap grommet assembly machine of claim 2, wherein: The rubber ring mounting mechanism (2) further includes sliding groove (26), the rear side inner wall of the mounting bin (22) is opened with sliding groove (26), the upper end of the mounting column (27) is all equipped with the second guide column (5), the rear end of the second guide column (5) is all slidably connected with the rear side adjacent sliding groove (26).
4. The lithium battery cap grommet assembly machine of claim 2, wherein: The upper and lower inner walls of the chute (23) are all opened with the first installation groove (231), the front and rear inner walls of the first installation groove (231) are all rotatably connected with the first roller (232) that is evenly distributed, the outer arc surface of the first roller (232) is all in contact with the outer arc surface of the first guide column (4) located in the same chute (23) inside.
5. The lithium battery cap grommet assembly machine of claim 4, wherein: The rubber ring mounting mechanism (2) further includes driving shaft (29), the rear side of the upper end of the expansion rod (24) is all equipped with driving shaft (29), the outer arc surface of driving shaft (29) is all rotatably connected with connecting rod (10), the rear side inner wall of the mounting bin (22) is opened with guide sliding groove (7), the inside of guide sliding groove (7) is slidably connected with driving frame (6), the column of the lower end of driving frame (6) is rotatably connected with the upper end of two connecting rods (10) respectively.
6. The lithium battery cap grommet assembly machine of claim 2, wherein: The upper side of the workbench (1) is equipped with control switch (9), the input end of control switch (9) is electrically connected with external power supply, the upper side of the mounting frame (21) is installed with electric cylinder (8), the telescopic end of electric cylinder (8) is in turn penetrated through the upper end of mounting frame (21) and the upper side wall of mounting bin (22) and is fixedly connected with the upper side of driving frame (6), the input end of electric cylinder (8) is electrically connected with the output end of control switch (9).
7. The lithium battery cap grommet assembly machine of claim 6, wherein: