Auxiliary jig for sealing button cell

Abstract

The utility model relates to the technical field of battery preparation, and discloses a button battery sealing auxiliary jig which is characterized by comprising a sealing mold, a distance adjusting mechanism and an ejection mechanism, the sealing mold comprises an upper punching die and a lower punching die which are correspondingly arranged, the lower punching die is provided with a cavity, and the bottom of the cavity is provided with an ejection column; the ejection mechanism comprises an installation box body, a seesaw, a first ejection rod and a second ejection rod, the seesaw is arranged in the installation box body in a lifting and swinging mode, the first ejection rod and the second ejection rod are arranged in the installation box body in a sliding mode, the two ends of the seesaw abut against the first ejection rod and the second ejection rod respectively, and the first ejection rod and the second ejection rod are arranged in the installation box body in a sliding mode. The extending end of the first ejector rod abuts against the ejector column, the extending end of the second ejector rod is connected with the distance adjusting mechanism, and the distance adjusting mechanism is used for controlling the position of the second ejector rod in the vertical direction so as to adjust the sealing height of the sealing mold.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, in particular to a button-type battery sealing auxiliary fixture. Background Art

[0002] The structure of a button cell includes a shell, a cap and a battery cell, wherein the battery cell is properly placed in the shell. After completing key processes such as spot bottom welding, cap welding, and liquid injection, the battery will be transferred to the sealing station, and the cap and the shell will be sealed by a sealing machine. However, when preparing button cells, the existing sealing operation method may result in a height difference of ±0.08mm even for the same batch of batteries. For micro button cells, such a height difference obviously exceeds the acceptable range of the standard, resulting in poor product height consistency and a relatively high defective rate. Therefore, we urgently need to design a button cell sealing auxiliary jig to significantly improve the height consistency of the sealed battery and optimize product quality. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a button-type battery sealing auxiliary fixture.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A button battery sealing auxiliary fixture, comprising: a sealing mold, a distance adjustment mechanism and an ejection mechanism,

[0006] The sealing mold comprises an upper punch and a lower punch that are arranged correspondingly, the lower punch is provided with a cavity, and a top column is arranged at the bottom of the cavity;

[0007] The ejection mechanism includes an installation box body, a seesaw, a first ejector rod and a second ejector rod. The seesaw can be raised and lowered and swung in the installation box body. The first ejector rod and the second ejector rod are respectively slidably arranged in the installation shell. The two ends of the seesaw are respectively supported by the first ejector rod and the second ejector rod. The extended end of the first ejector rod is abutted against the ejector column. The extended end of the second ejector rod is connected to the distance adjustment mechanism. The distance adjustment mechanism is used to control the position of the second ejector rod in the vertical direction, thereby adjusting the sealing height of the sealing mold.

[0008] In one embodiment, the installation box body includes a cover plate, an intermediate box body and a base which are arranged in sequence from top to bottom, the intermediate box body is provided with a accommodating cavity, and a first lifting groove and a second lifting groove which are connected to the accommodating cavity are respectively provided above both ends of the accommodating cavity, the accommodating cavity is used to accommodate the seesaw, the first lifting groove and the second lifting groove are respectively used for the first push rod and the second push rod to lift and slide, and the cover plate is provided with an avoidance hole for the first push rod and the second push rod to extend out.

[0009] In one embodiment, an arc-shaped boss is provided in the middle of the seesaw, and an arc-shaped groove matching the arc-shaped boss is provided on the base.

[0010] In one embodiment, the two side walls of the arc-shaped boss are respectively provided with a rotating shaft, the side wall of the accommodating cavity is provided with an accommodating hole matching the rotating shaft, and the rotating shaft is rotatably arranged in the accommodating hole.

[0011] In one embodiment, the installation box body also includes two elastic members, and two first through holes connected to the accommodating cavity are respectively opened above the two ends of the accommodating cavity, each of the first through holes is used to accommodate an elastic member, and the two ends of each elastic member are respectively connected to the seesaw and the cover plate, so that the two ends of the seesaw are respectively elastically connected to the cover plate.

[0012] In one embodiment, an abutment block is respectively disposed on both sides of the first push rod in the vertical direction, and one end of each abutment block close to the cover plate is elastically connected to the cover plate through a spring.

[0013] In one embodiment, the distance adjustment mechanism includes a mounting assembly, a height adjustment assembly and a pressure block, the pressure block is arranged above the second push rod through the mounting assembly, and the pressure block is abutted against the second push rod, and the height adjustment assembly is used to adjust the position of the pressure block in the vertical direction.

[0014] In one embodiment, the mounting assembly includes a mounting plate and a fixed block, the fixed block is arranged on the mounting plate, the fixed block is provided with a horizontal slide groove in the horizontal direction, the fixed block is provided with a second through hole in the vertical direction which is connected with the horizontal slide groove, the height adjustment assembly includes a knob micrometer and a push block, the knob micrometer is connected to the mounting plate, the output end of the knob micrometer is connected to the push block, the push block is slidably arranged in the horizontal slide groove, the push block is provided with an inclined slide groove, one end of the pressing block is slidably connected to the inclined slide groove, and the other end of the pressing block is penetrated by the second through hole which abuts against the second push rod.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] 1. Precise distance adjustment control: The distance adjustment mechanism can accurately control the vertical position of the second ejector rod, thereby finely adjusting the swing state of the seesaw and the pressure of the first ejector rod on the ejector column. This precise distance adjustment capability ensures that when the sealing mold seals the button battery, it can apply just the right pressure to each battery according to the preset sealing height standard, so that the height of the sealed battery remains highly consistent, and the height difference of the same batch of batteries may be reduced to ±0.01mm.

[0017] 2. Enhanced adaptability: For button batteries of different models and specifications, or slight changes in the size of batteries of the same model during the production process, the distance adjustment mechanism can flexibly adjust the position of the second ejector rod to adapt to these changes and ensure the consistency of the sealing height.

[0018] 3. Reduce the defective rate: Since the consistency of sealing height is significantly improved, the problems such as poor battery sealing and internal short circuit caused by sealing too high or too low are reduced, thereby significantly reducing the defective rate and improving production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of a button battery sealing auxiliary fixture according to one embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the button battery sealing auxiliary fixture from above;

[0022] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the button battery sealing auxiliary fixture along the AA direction;

[0023] Figure 4 for Figure 1 A schematic diagram of the exploded structure of the ejection mechanism of the button battery sealing auxiliary fixture;

[0024] Figure 5 for Figure 1 Schematic diagram of the exploded structure of the distance adjustment mechanism of the button battery sealing auxiliary fixture.

[0025] The numbers in the figure are: 10, button battery sealing auxiliary fixture; 100, sealing mold; 110, upper punch; 120, lower punch; 121, cavity; 122, ejector; 200, ejector mechanism; 210, installation box body; 211, cover plate; 2111, avoidance hole; 212, intermediate box body; 2121, accommodating cavity; 2121a, accommodating hole; 2122, first lifting groove; 2123, second lifting groove; 213, base; 2131, arc groove; 2 14. Elastic member; 220. Seesaw; 221. Arc boss; 222. Rotating shaft; 230. First push rod; 231. Abutment block; 232. Spring; 240. Second push rod; 300. Distance adjustment mechanism; 310. Mounting assembly; 311. Mounting plate; 312. Fixed block; 3121. Horizontal slide groove; 3122. Second through hole; 320. Height adjustment assembly; 321. Knob micrometer; 322. Push block; 3221. Inclined slide groove; 330. Press block. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] See also Figures 1 to 3A button battery sealing auxiliary fixture (10) comprises: a sealing mold (100), an ejection mechanism (200) and a spacing adjustment mechanism (300), wherein the sealing mold (100) comprises an upper punch (110) and a lower punch (120) which are arranged correspondingly, the lower punch (120) is provided with a cavity (121), and a push rod (122) is arranged at the bottom of the cavity (121); the ejection mechanism (200) comprises a mounting box body (210), a seesaw (220), a first push rod (230) and a second push rod (240), and the seesaw (220) can be raised and lowered. The descending swing is arranged in the installation box body (210), the first push rod (230) and the second push rod (240) are respectively slidably arranged in the installation shell, the two ends of the seesaw (220) are respectively supported by the first push rod (230) and the second push rod (240), the extended end of the first push rod (230) is abutted against the push column (122), and the extended end of the second push rod (240) is connected to the distance adjustment mechanism (300), and the distance adjustment mechanism (300) is used to control the position of the second push rod (240) in the vertical direction, thereby adjusting the sealing height of the sealing mold (100).

[0030] It should be noted that the seesaw (220) is installed as a whole in the installation box (210), and its design allows it to swing up and down along a certain axis in the box. This design is similar to the traditional seesaw (220), but precise mechanical control is achieved in the button battery sealing auxiliary fixture (10). The two ends of the seesaw (220) are respectively connected to the first push rod (230) and the second push rod (240) to form a mechanical transmission chain. When the seesaw (220) swings, the swinging force is transmitted to the first push rod (230) and the second push rod (240) through the support relationship at the two ends. The swing of the seesaw (220) is controlled by the distance adjustment mechanism (300) through the second push rod (240), that is, the distance adjustment mechanism (300) adjusts the position of the second push rod (240) in the vertical direction, thereby changing the force on one end of the seesaw (220), causing the seesaw (220) to swing up and down around its fulcrum. When the seesaw (220) swings, its two ends apply forces in opposite directions to the first push rod (230) and the second push rod (240). Since the first push rod (230) is in contact with the top column (122) and the second push rod (240) is connected to the distance adjustment mechanism (300), the swing torque of the seesaw (220) is effectively transmitted to the top column (122), thereby controlling the sealing height of the sealing mold (100). The second push rod (240) is controlled by the distance adjustment mechanism (300), thereby adjusting the swing angle of the seesaw (220), indirectly changing the pressure of the first push rod (230) on the top column (122), and realizing precise adjustment of the sealing height of the sealing mold (100). This design enables the auxiliary fixture to accurately control the height consistency of the battery during the sealing operation, thereby improving product quality.

[0031] See also Figure 3 and Figure 4 Furthermore, the installation box body (210) comprises a cover plate (211), an intermediate box body (212) and a base (213) which are arranged in sequence from top to bottom, the intermediate box body (212) is provided with a receiving cavity (2121), and a first lifting groove (2122) and a second lifting groove (2123) which are connected to the receiving cavity (2121) are respectively provided above the two ends of the receiving cavity (2121), the receiving cavity (2121) is used to accommodate the seesaw (220), the first lifting groove (2122) and the second lifting groove (2123) are respectively used for the first push rod (230) and the second push rod (240) to lift and slide, and the cover plate (211) is provided with an avoidance hole (2111) for the first push rod (230) and the second push rod (240) to extend.

[0032] It should be noted that a receiving chamber (2121) is provided in the middle box body (212) for receiving the seesaw (220), so as to ensure that the seesaw (220) can swing stably in a closed space without being disturbed by the outside world; the first and second lifting grooves (2123) opened above the two ends of the receiving chamber (2121) are connected to the receiving chamber (2121), respectively allowing the first push rod (230) and the second push rod (240) to slide in the vertical direction, providing precise guidance and position limiting for the lifting and lowering action of the push rods, and ensuring the accuracy of their motion trajectory; at the same time, the avoidance hole (2111) on the cover plate (211) ensures that the push rods can be smoothly extended during the lifting process, without affecting their coordination with the seesaw (220), the top column (122) and other components. In this way, the button-type battery sealing auxiliary fixture (10) realizes the orderly layout, precise guidance and stable movement of the internal components through the carefully designed installation box body (210) structure.

[0033] See also Figure 3 and Figure 4 Furthermore, an arc-shaped boss (221) is provided in the middle of the seesaw (220), and an arc-shaped groove (2131) matching the arc-shaped boss (221) is provided on the base (213).

[0034] It should be noted that, during the swinging process of the seesaw (220), the arc-shaped boss (221) can be embedded in the arc-shaped groove (2131) of the base (213) to form rolling contact, thereby reducing friction resistance and improving the smoothness and stability of the swinging of the seesaw (220). At the same time, the arc-shaped structure also helps to disperse stress and prolong the service life of the seesaw (220) and the base (213).

[0035] See also Figure 3 and Figure 4Furthermore, the two side walls of the arc-shaped boss (221) are respectively provided with a rotating shaft (222), and the side wall of the accommodating cavity (2121) is provided with an accommodating hole (2121a) matching the rotating shaft (222), and the rotating shaft (222) is rotatably arranged in the accommodating hole (2121a).

[0036] It should be noted that the rotating shaft (222) is embedded in the receiving hole (2121a) by rotation to form a rotatable connection, so that the seesaw (220) can swing stably and smoothly in the receiving cavity (2121) with the rotating shaft (222) as the center, ensuring the transmission efficiency between it and the first and second push rods (240), while reducing the friction loss during the swinging process and extending the service life of the equipment. Through the cooperation of the rotating shaft (222) and the receiving hole (2121a), the auxiliary fixture realizes effective support and guidance for the swinging of the seesaw (220), improving the accuracy and consistency of the sealing operation.

[0037] See also Figure 3 and Figure 4 Furthermore, the installation box body (210) also includes two elastic members (214), and two first through holes connected to the accommodating cavity (2121) are respectively opened above the two ends of the accommodating cavity (2121), each first through hole is used to accommodate an elastic member (214), and the two ends of each elastic member (214) are respectively connected to the seesaw (220) and the cover plate (211), so that the two ends of the seesaw (220) are respectively elastically connected to the cover plate (211).

[0038] It should be noted that when the sealing auxiliary fixture is in operation, when the seesaw (220) swings due to an external force, the elastic member (214) (in practice, a spring (232), a rubber pad, etc.) can provide a buffering effect, absorb and disperse part of the impact force, and make the seesaw (220) swing more smoothly. At the same time, when the external force is removed, the energy stored in the elastic member (214) will cause the seesaw (220) to automatically reset and return to the initial position without the need for an additional power source or manual intervention, thereby simplifying the equipment structure and improving work efficiency.

[0039] See also Figure 3 and Figure 4 Furthermore, a contact block (231) is provided on both sides of the first push rod (230) in the vertical direction, and one end of each contact block (231) close to the cover plate (211) is elastically connected to the cover plate (211) through a spring (232).

[0040] It should be noted that the spring (232) is contained in the first lifting groove (2122), one end of the spring (232) is fixed to the abutment block (231), and the other end is connected to the cover plate (211). When the first push rod (230) is subjected to a large impact or a sudden load change during the sealing process, the spring (232) can absorb part of the impact energy, reduce damage to the internal structure and parts of the equipment, and extend the service life of the equipment. At the same time, the presence of the spring (232) makes the first push rod (230) more stable during the up and down movement, reduces the noise and equipment wear caused by vibration, and improves the sealing accuracy and product quality.

[0041] At the same time, the second push rod (240) is also provided with the same abutment block (231) and spring (232) structure, and has the same connection mode and function as the first push rod (230), which will not be described in detail here.

[0042] See also Figure 5 Furthermore, the distance adjustment mechanism (300) includes a mounting assembly (310), a height adjustment assembly (320) and a pressure block (330). The pressure block (330) is arranged above the second top rod (240) through the mounting assembly (310), and the pressure block (330) is abutted against the second top rod (240). The height adjustment assembly (320) is used to adjust the position of the pressure block (330) in the vertical direction.

[0043] It should be noted that the mounting assembly (310) is used to fix the pressing block (330) so that it can be stably arranged above the second push rod (240) to ensure that the pressing block (330) and the second push rod (240) maintain effective contact during the adjustment process. The height adjustment assembly (320) is connected to the mounting assembly (310) and is used to adjust the position of the pressing block (330) in the vertical direction, and change the pressure of the pressing block (330) on the second push rod (240) by changing its own length or output force, thereby achieving precise control of the vertical position of the second push rod (240).

[0044] See also Figure 5Furthermore, the mounting assembly (310) includes a mounting plate (311) and a fixing block (312), the fixing block (312) is arranged on the mounting plate (311), the fixing block (312) is provided with a horizontal slide groove (3121) in the horizontal direction, the fixing block (312) is provided with a second through hole (3122) in the vertical direction which is connected with the horizontal slide groove (3121), and the height adjustment assembly (320) includes a knob micrometer (321) and a push rod (321). The knob micrometer (321) is connected to the mounting plate (311), the output end of the knob micrometer (321) is connected to the push block (322), the push block (322) is slidably arranged in the horizontal slide groove (3121), the push block (322) is provided with an inclined slide groove (3221), one end of the pressing block is slidably connected to the inclined slide groove (3221), and the other end of the pressing block is penetrated by a second through hole (3122) and abuts against the second push rod (240).

[0045] It should be noted that the push block (322) is driven to slide in the horizontal slide groove (3121) by the knob micrometer (321), which is converted into the vertical movement of the pressing block via the inclined slide groove (3221), and the pressure of the pressing block (330) on the second push rod (240) is accurately controlled, thereby achieving fine adjustment of the sealing height. This design combines the conversion mechanism of horizontal sliding and the inclined slide groove (3221), making the height adjustment more accurate and stable, and adapting to the production needs of button batteries with extremely high requirements for sealing height.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A button battery sealing auxiliary fixture, characterized in that: include: Sealing mold, distance adjustment mechanism and ejection mechanism, The sealing mold comprises an upper punch and a lower punch that are arranged correspondingly, the lower punch is provided with a cavity, and a top column is arranged at the bottom of the cavity; The ejection mechanism includes an installation box body, a seesaw, a first ejector rod and a second ejector rod. The seesaw can be raised and lowered and swung in the installation box body. The first ejector rod and the second ejector rod are respectively slidably arranged in the installation shell. The two ends of the seesaw are respectively supported by the first ejector rod and the second ejector rod. The extended end of the first ejector rod is abutted against the ejector column, and the extended end of the second ejector rod is connected to the distance adjusting mechanism. The distance adjusting mechanism is used to control the position of the second ejector rod in the vertical direction, thereby adjusting the sealing height of the sealing mold.

2. The button battery sealing auxiliary fixture according to claim 1, characterized in that: The installation box body includes a cover plate, an intermediate box body and a base which are arranged in sequence from top to bottom. The intermediate box body is provided with a accommodating cavity. A first lifting groove and a second lifting groove which are connected to the accommodating cavity are respectively provided above both ends of the accommodating cavity. The accommodating cavity is used to accommodate the seesaw. The first lifting groove and the second lifting groove are respectively used for the first push rod and the second push rod to lift and slide. The cover plate is provided with an avoidance hole for the first push rod and the second push rod to extend out.

3. The button battery sealing auxiliary fixture according to claim 2, characterized in that: An arc-shaped boss is arranged in the middle of the seesaw, and an arc-shaped groove matching the arc-shaped boss is arranged on the base.

4. The button battery sealing auxiliary fixture according to claim 3, characterized in that: The two side walls of the arc-shaped boss are respectively provided with rotating shafts, and the side walls of the accommodating cavity are provided with accommodating holes matching the rotating shafts, and the rotating shafts are rotatably arranged in the accommodating holes.

5. The button battery sealing auxiliary fixture according to claim 2, characterized in that: The installation box body also includes two elastic members, and two first through holes connected to the accommodating cavity are respectively opened above the two ends of the accommodating cavity, each of the first through holes is used to accommodate an elastic member, and the two ends of each elastic member are respectively connected to the seesaw and the cover plate, so that the two ends of the seesaw are respectively elastically connected to the cover plate.

6. The button battery sealing auxiliary fixture according to claim 2, characterized in that: The first push rod is provided with an abutment block on both sides along the vertical direction, and one end of each abutment block close to the cover plate is elastically connected to the cover plate through a spring.

7. The button battery sealing auxiliary fixture according to claim 1, characterized in that: The distance adjustment mechanism includes a mounting assembly, a height adjustment assembly and a pressure block. The pressure block is arranged above the second push rod through the mounting assembly, and the pressure block is abutted against the second push rod. The height adjustment assembly is used to adjust the position of the pressure block in the vertical direction.

8. The button battery sealing auxiliary fixture according to claim 7, characterized in that: The mounting assembly includes a mounting plate and a fixed block, the fixed block is arranged on the mounting plate, the fixed block is provided with a horizontal slide groove in the horizontal direction, the fixed block is provided with a second through hole connected with the horizontal slide groove in the vertical direction, the height adjustment assembly includes a knob micrometer and a push block, the knob micrometer is connected to the mounting plate, the output end of the knob micrometer is connected to the push block, the push block is slidably arranged in the horizontal slide groove, the push block is provided with an inclined slide groove, one end of the pressing block is slidably connected to the inclined slide groove, and the other end of the pressing block is penetrated by the second through hole and abuts against the second push rod.

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