Cylindrical battery sealing and bending device

Abstract

The utility model relates to the technical field of battery sealing, in particular to a cylindrical battery sealing and bending device which comprises a fixing seat, a limiting cap, a bending limiting guide sleeve, an elastic piece and a sealing and bending center die, a containing cavity is formed in the bottom end face of the fixing seat in a concave mode, the limiting cap is arranged at the bottom of the fixing seat in a sleeved mode, and a guide hole communicated with the containing cavity is formed in the middle of the limiting cap. The sealing bending center die is arranged on the fixing base and located in the containing cavity, the bending limiting guide sleeve is arranged outside the sealing bending center die in a sliding and sleeving mode, the two ends of the elastic piece elastically abut against the top wall of the containing cavity and the top face of the bending limiting guide sleeve respectively, a limiting ring is arranged on the peripheral wall of the bending limiting guide sleeve in a protruding mode, and the limiting ring is connected with the inner wall of the containing cavity in a sliding mode. An annular sealing bending arc-shaped groove is formed in the edge of the bottom end face of the sealing bending center die in a concave mode. According to the utility model, the bending limiting guide sleeve and the sealing and bending center die are cooperated and matched to stably perform sealing and bending work on the cylindrical battery, so that the sealing and bending quality of the cylindrical battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery sealing technology, and in particular to a cylindrical battery sealing and bending device. Background Technology

[0002] In cylindrical battery production, sealing and bending are crucial steps. Chinese patent application number 201220511729.1 discloses a sealing mold device for a cylindrical battery sealing machine, used for sealing cylindrical batteries. This sealing mold device includes a drive motor, a clutch, a reduction mechanism, a slider mechanism, a sealing mold, a sliding column, and a lower mold. Its key feature is that the reduction mechanism has a cam mechanism connected to it. The sealing mold is fixed to the lower side of the slider mechanism. The cam mechanism drives the slider mechanism and the sealing mold to slide along the sliding column. A return spring is also installed on the sliding column to facilitate the upward reset of the sealing mold. The power output from the drive motor is transmitted to the reduction mechanism via the clutch. After deceleration, the reduction mechanism drives the cam mechanism to rotate. The cam of the cam mechanism pushes the sealing mold connected to the lower end of the slider mechanism to slide up and down intermittently, sealing the cylindrical battery transferred to the lower mold. While this patent document accurately positions the battery, effectively improving production efficiency and facilitating speed and process time adjustment, it lacks a clear purpose. It only discloses the process of the punch on the sealing mold contacting the battery cap at the opening of the cylindrical battery, gradually bending the steel casing to completely seal the cap. The specific structure of the punch on the sealing mold is not disclosed, making it difficult to guarantee that the steel casing bends only towards the battery cap at the opening, thus compromising the quality of the battery sealing process. Therefore, the patent has significant drawbacks and urgently requires a solution. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a cylindrical battery sealing and bending device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cylindrical battery sealing and bending device includes a fixed base, a limiting cap, a bending limiting guide sleeve, an elastic element, and a sealing and bending center mold. The bottom end face of the fixed base has a recessed receiving cavity. The limiting cap is fitted onto the bottom of the fixed base, and a guide hole communicating with the receiving cavity is opened in the middle of the limiting cap. The sealing and bending center mold is installed on the fixed base and located within the receiving cavity. The bending limiting guide sleeve is slidably fitted outside the sealing and bending center mold, and the outer wall of the bending limiting guide sleeve is slidably connected to the inner wall of the guide hole. The elastic element is located within the receiving cavity, and its two ends are respectively connected to… The top wall of the accommodating cavity and the top surface of the bending limiting guide sleeve elastically abut against each other. A limiting ring is protruding from the peripheral wall of the bending limiting guide sleeve. The limiting ring is slidably connected to the inner wall of the accommodating cavity. An annular sealing bending arc groove is recessed at the bottom end face edge of the sealing bending center mold. When the elastic element is in the extended state, the limiting ring abuts against the inner end face of the limiting cap. The horizontal plane at the bottom end face of the bending limiting guide sleeve is lower than the horizontal plane at the bottom end face of the sealing bending center mold. The bottom end of the bending limiting guide sleeve extends out of the bottom end face of the limiting cap through the guide hole.

[0006] Furthermore, the bottom of the fixing seat is threadedly connected to the limit cap.

[0007] Furthermore, the sealing bending center mold is detachably connected to the fixing seat via a locking fastener.

[0008] Furthermore, the locking device is a locking bolt. The top surface of the fixing seat is recessed with a countersunk hole that communicates with the receiving cavity. The axial recess of the sealing bending center mold is provided with a threaded hole that communicates with the countersunk hole. The stud of the locking bolt passes through the countersunk hole and is threadedly connected to the threaded hole. The nut of the locking bolt is housed in the countersunk hole.

[0009] Furthermore, the fixing seat has an external insertion hole in the radial direction that communicates with the receiving cavity, and the sealing bending center mold has an internal insertion hole in the radial direction that is coaxially communicated with the external insertion hole.

[0010] Furthermore, the bottom end face of the sealing and bending center mold is recessed with a relief hole, and the sealing and bending arc-shaped groove is arranged around the relief hole.

[0011] Furthermore, the elastic element is a spring, which is sleeved outside the center mold of the sealing bend.

[0012] Furthermore, the outer wall of the limiting cap is provided with a disassembly hole.

[0013] The beneficial effects of this utility model are as follows: In practical applications, the fixing base is installed on an external mechanism. When the cylindrical battery to be sealed and bent, which is fixed by the clamp, corresponds vertically with this utility model, the bent edge of the cylindrical battery extends beyond the top surface of the clamp. The cylindrical battery to be sealed and bent, which is fixed by the clamp, gradually approaches this utility model. During this process, the bottom end face of the bending limiting guide sleeve first abuts against the top surface of the clamp. The top surface of the clamp applies an upward force to the bending limiting guide sleeve, causing the bending limiting guide sleeve to move along... The sealing and bending center mold moves upward and compresses the elastic element. The edge of the cylindrical battery to be sealed and bent will abut against the sealing and bending arc groove of the sealing and bending center mold. During the sealing and bending process of the cylindrical battery edge to be sealed and bent by the sealing and bending arc groove, the inner wall of the center hole of the bending limiting guide sleeve blocks the cylindrical battery edge to be sealed and bent. This allows the cylindrical battery edge to be bent inward towards the top surface of the cylindrical battery under the action of the sealing and bending arc groove, thus sealing and bending the cylindrical battery. After the sealing and bending of the cylindrical battery is completed, the cylindrical battery fixed by the clamp gradually moves away from the present invention. The elastic element will elastically recover, and the bending limiting guide sleeve will reset and move under the action of the elastic element's rebound force until the limiting ring of the bending limiting guide sleeve abuts against the inner end face of the limiting cap, thereby realizing the automatic reset of the bending limiting guide sleeve and preparing for the sealing and bending of the next cylindrical battery. This invention utilizes the coordinated action of a bending limiting guide sleeve and a sealing bending center mold to stably perform sealing bending on cylindrical batteries, thereby improving the quality of cylindrical battery sealing bending. Attached Figure Description

[0014] Figure 1 This is a full sectional view of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Fixed base; 2. Limiting cap; 3. Bending limiting guide sleeve; 4. Elastic element; 5. Sealing bending center mold; 6. Receiving cavity; 7. Guide hole; 8. Limiting ring; 9. Sealing bending arc groove; 10. Locking fastener; 11. Countersunk hole; 12. Threaded hole; 13. External insertion hole; 14. Internal insertion hole; 15. Clearance hole; 16. Disassembly hole. Detailed Implementation

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0019] like Figure 1 and Figure 2As shown, this utility model provides a cylindrical battery sealing and bending device, which includes a fixed base 1, a limiting cap 2, a bending limiting guide sleeve 3, an elastic element 4, and a sealing and bending center mold 5. The bottom end face of the fixed base 1 is recessed with a receiving cavity 6. The limiting cap 2 is fitted onto the bottom of the fixed base 1, and a guide hole 7 communicating with the receiving cavity 6 is opened in the middle of the limiting cap 2. The sealing and bending center mold 5 is installed on the fixed base 1 and located in the receiving cavity 6. The bending limiting guide sleeve 3 is slidably fitted onto the sealing and bending center mold 5, and the outer wall of the bending limiting guide sleeve 3 is slidably connected to the inner wall of the guide hole 7. The elastic element 4 is located in the receiving cavity 6, and both ends of the elastic element 4 are respectively connected to the inner wall of the guide hole 7. The top wall of the accommodating cavity 6 and the top surface of the bending limiting guide sleeve 3 elastically abut against each other. The peripheral wall of the bending limiting guide sleeve 3 is provided with a limiting ring 8, which is slidably connected to the inner wall of the accommodating cavity 6. The bottom end face edge of the sealing bending center mold 5 is recessed with an annular sealing bending arc groove 9. When the elastic element 4 is in the extended state, the limiting ring 8 abuts against the inner end face of the limiting cap 2. The horizontal plane where the bottom end face of the bending limiting guide sleeve 3 is located is lower than the horizontal plane where the bottom end face of the sealing bending center mold 5 is located. The bottom end of the bending limiting guide sleeve 3 extends out of the bottom end face of the limiting cap 2 through the guide hole 7. The sealing bending center mold 5 and the accommodating cavity 6 are coaxially arranged.

[0020] In practical applications, the fixing base 1 is installed on an external mechanism. When the cylindrical battery to be sealed and bent, which is fixed by the clamp, corresponds vertically to this utility model, the edge of the cylindrical battery to be sealed and bent extends beyond the top surface of the clamp. The cylindrical battery to be sealed and bent, which is fixed by the clamp, gradually approaches this utility model. During this process, the bottom surface of the bending limiting guide sleeve 3 first abuts against the top surface of the clamp. The top surface of the clamp applies an upward force to the bending limiting guide sleeve 3, causing the bending limiting guide sleeve 3 to move along the center mold of the sealing and bending. 5. Move upward and compress the elastic element 4, and the cylindrical battery's bent edge to be sealed will abut against the sealing bending arc groove 9 of the sealing bending center mold 5. During the sealing bending process of the cylindrical battery's bent edge to be sealed by the sealing bending arc groove 9, the inner wall of the center hole of the bending limiting guide sleeve 3 blocks the cylindrical battery's bent edge to be sealed, so that the cylindrical battery's bent edge to be sealed can only be bent inward towards the top surface of the cylindrical battery under the action of the sealing bending arc groove 9, so as to seal the cylindrical battery. After the cylindrical battery is sealed and bent, the battery, which is fixed by the clamp, gradually moves away from the present invention. The elastic element 4 will elastically recover, and the bending limiting guide sleeve 3 will reset and move under the action of the elastic force of the elastic element 4 until the limiting ring 8 of the bending limiting guide sleeve 3 abuts against the inner end face of the limiting cap 2, so as to realize the automatic reset of the bending limiting guide sleeve 3, preparing for the sealing and bending of the next cylindrical battery. The present invention, through the coordinated cooperation of the bending limiting guide sleeve 3 and the sealing and bending center mold 5, can stably perform the sealing and bending work on the cylindrical battery, thus improving the quality of the cylindrical battery sealing and bending.

[0021] In this embodiment, the bottom of the fixing base 1 is threadedly connected to the limiting cap 2. Specifically, the outer side wall of the bottom of the fixing base 1 is provided with an external thread, and the inner side wall of the limiting cap 2 is provided with an internal thread that is screwed into the external thread. This structural design facilitates the assembly and disassembly of the fixing base 1 and the limiting cap 2, and the connection between the fixing base 1 and the limiting cap 2 is firm.

[0022] In this embodiment, the outer side wall of the limiting cap 2 is provided with a disassembly hole 16. When disassembling or assembling the limiting cap 2, the disassembly tool is inserted into the disassembly hole 16, and the limiting cap 2 is driven to rotate relative to the fixed base 1 by the disassembly tool, so as to screw the limiting cap 2, thereby realizing the disassembly or assembly of the limiting cap 2 and the fixed base 1.

[0023] In this embodiment, the sealing and bending center mold 5 is detachably connected to the fixing base 1 via the locking fastener 10. This structural design ensures a firm connection between the sealing and bending center mold 5 and the fixing base 1, facilitating the assembly and disassembly of the sealing and bending center mold 5 and the fixing base 1.

[0024] In this embodiment, the locking device 10 is a locking bolt. The top surface of the fixing seat 1 is recessed with a countersunk hole 11 that communicates with the receiving cavity 6. The sealing bending center mold 5 is axially recessed with a threaded hole 12 that communicates coaxially with the countersunk hole 11. The stud of the locking bolt passes through the countersunk hole 11 and is threadedly connected to the threaded hole 12. The nut of the locking bolt is housed in the countersunk hole 11. This structural design not only facilitates a firm connection between the sealing bending center mold 5 and the fixing seat 1, but also makes the structure of the locking device 10, the fixing seat 1, and the sealing bending center mold 5 compact.

[0025] In this embodiment, the fixing base 1 has an external insertion hole 13 that communicates with the accommodating cavity 6 in the radial direction, and the sealing bending center mold 5 has an internal insertion hole 14 that communicates coaxially with the external insertion hole 13 in the radial direction. When disassembling or assembling the sealing bending center mold 5, the insertion rod is inserted into the external insertion hole 13 and the internal insertion hole 14, and then the locking fastener 10 is tightened to prevent the sealing bending center mold 5 from rotating synchronously with the locking fastener 10, which would prevent the sealing bending center mold 5 from being disassembled or assembled normally.

[0026] In this embodiment, a clearance hole 15 is recessed on the bottom end face of the sealing and bending center mold 5, and a sealing and bending arc-shaped groove 9 is arranged around the clearance hole 15. When sealing and bending the cylindrical battery, the clearance hole 15 provides clearance space for the tabs of the cylindrical battery, preventing the tabs of the cylindrical battery from being deformed / damaged.

[0027] In this embodiment, the elastic element 4 is a spring, which is sleeved outside the sealing and bending center mold 5. In practical applications, the sealing and bending center mold 5 guides the spring, ensuring its working stability and facilitating its assembly and disassembly.

[0028] All technical features in this embodiment can be freely combined according to actual needs.

[0029] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A cylindrical battery sealing and bending device, characterized in that: The assembly includes a fixed base (1), a limiting cap (2), a bending limiting guide sleeve (3), an elastic element (4), and a sealing bending center mold (5). The bottom end face of the fixed base (1) is recessed with a receiving cavity (6). The limiting cap (2) is fitted onto the bottom of the fixed base (1). The middle part of the limiting cap (2) has a guide hole (7) communicating with the receiving cavity (6). The sealing bending center mold (5) is installed on the fixed base (1) and located inside the receiving cavity (6). The bending limiting guide sleeve (3) is slidably fitted outside the sealing bending center mold (5). The outer wall of the bending limiting guide sleeve (3) is slidably connected to the inner wall of the guide hole (7). The elastic element (4) is located inside the receiving cavity (6). The two ends of the elastic element (4) are... The upper wall of the cavity (6) and the upper surface of the bending limiting guide sleeve (3) are elastically in contact with each other. The peripheral wall of the bending limiting guide sleeve (3) is provided with a limiting ring (8). The limiting ring (8) is slidably connected to the inner wall of the cavity (6). The bottom end face edge of the sealing bending center mold (5) is recessed with an annular sealing bending arc groove (9). When the elastic element (4) is in the extended state, the limiting ring (8) abuts against the inner end face of the limiting cap (2). The horizontal plane where the bottom end face of the bending limiting guide sleeve (3) is located is lower than the horizontal plane where the bottom end face of the sealing bending center mold (5) is located. The bottom end of the bending limiting guide sleeve (3) extends out of the bottom end face of the limiting cap (2) through the guide hole (7).

2. The cylindrical battery sealing and bending device according to claim 1, characterized in that: The bottom of the fixed seat (1) is threadedly connected to the limit cap (2).

3. The cylindrical battery sealing and bending device according to claim 1, characterized in that: The sealing bending center mold (5) is detachably connected to the fixing seat (1) via the locking fastener (10).

4. The cylindrical battery sealing and bending device according to claim 3, characterized in that: The locking fastener (10) is a locking bolt. The top surface of the fixing seat (1) is recessed with a countersunk hole (11) that communicates with the receiving cavity (6). The axial recess of the sealing bending center mold (5) is recessed with a threaded hole (12) that communicates with the countersunk hole (11). The stud of the locking bolt passes through the countersunk hole (11) and is threadedly connected to the threaded hole (12). The nut of the locking bolt is housed in the countersunk hole (11).

5. The cylindrical battery sealing and bending device according to claim 4, characterized in that: The fixed base (1) has an external insertion hole (13) that communicates with the accommodating cavity (6) in the radial direction, and the sealing bending center mold (5) has an internal insertion hole (14) that communicates with the external insertion hole (13) in the radial direction.

6. The cylindrical battery sealing and bending device according to claim 1, characterized in that: The bottom end face of the sealing bending center mold (5) is recessed with a relief hole (15), and the sealing bending arc groove (9) is arranged around the relief hole (15).

7. The cylindrical battery sealing and bending device according to claim 1, characterized in that: The elastic element (4) is a spring, which is sleeved outside the sealing bending center mold (5).

8. A cylindrical battery sealing and bending device according to claim 2, characterized in that: The outer side wall of the limiting cap (2) is provided with a disassembly hole (16).

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