Tab cutting mechanism

Abstract

The utility model relates to the technical field of battery production, and discloses a tab cutting mechanism which comprises an upper cutter assembly, a lower cutter assembly and a jacking assembly, the upper cutter assembly is arranged above the lower cutter assembly, and the upper cutter assembly and the lower cutter assembly are both connected with the driving end of the jacking assembly; the upper cutter assembly comprises a first cutter, a first driving piece used for driving the first cutter to move in the vertical direction, a second cutter and a second driving piece used for driving the second cutter to move in the vertical direction, and the first cutter and the second cutter are arranged side by side. The lower cutter assembly comprises a lower cutter, the lower cutter is arranged below the first cutter and the second cutter in a staggered mode, and a plurality of suction holes are formed in the top of the lower cutter. The tab cutting mechanism has the following technical effects that the plurality of suction holes are formed in the top of the lower cutter and are used for adsorbing and fixing when the tab is cut, so that the tab cannot be damaged, the arrangement of a pressing component is omitted, the structure of the tab cutting mechanism is simplified, and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing technology, specifically relating to a tab cutting mechanism. Background Technology

[0002] Battery cells typically have tabs extending from their tips, usually including a positive tab and a negative tab. Because the tab sizes may vary between cells, the positive and negative tabs of each cell need to be cut uniformly during battery production to ensure consistent tab dimensions and facilitate proper soldering of the tabs to pads or other conductive components.

[0003] Existing electrode cutting mechanisms typically include an upper and lower cutter for cutting the electrode, as well as a pressing component for fixing the electrode. Since the electrode itself is relatively thin, pressing and fixing it with the pressing component can easily damage the electrode, thereby affecting the normal electrical connection of the electrode. Furthermore, setting up a separate pressing component to fix the electrode makes the electrode cutting mechanism more complex and increases production costs. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides an electrode cutting mechanism. By setting multiple suction holes on the top of the lower cutter for adsorption and fixation during electrode cutting, the electrode is not damaged, and the lower pressing component is eliminated, simplifying the structure of the electrode cutting mechanism and helping to reduce production costs.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0006] This utility model provides a tab cutting mechanism, including an upper cutting blade assembly, a lower cutting blade assembly, and a lifting assembly. The upper cutting blade assembly is disposed above the lower cutting blade assembly, and both the upper cutting blade assembly and the lower cutting blade assembly are connected to the driving end of the lifting assembly.

[0007] The upper cutting blade assembly includes a first cutting blade, a first driving member for driving the first cutting blade to move vertically, a second cutting blade, and a second driving member for driving the second cutting blade to move vertically, wherein the first cutting blade and the second cutting blade are arranged side by side;

[0008] The lower cutter assembly includes a lower cutter, which is offset below the first cutter and the second cutter, and the top of the lower cutter is provided with multiple suction holes.

[0009] As a further description of the technical solution of this utility model, the lower cutter is provided with a plurality of air blowing holes on the side wall near the first cutter and the second cutter.

[0010] As a further description of the technical solution of this utility model, the bottom of the first cutter is inclined downward along the end away from the second cutter toward the end close to the second cutter to form a first cutting edge portion, and the bottom of the second cutter is inclined downward along the end away from the first cutter toward the end close to the first cutter to form a second cutting edge portion.

[0011] As a further description of the technical solution of this utility model, a first guide block is provided at one end of the first blade near the second cutter, a second guide block is provided at one end of the second blade near the first cutter, and a guide boss is provided on the side wall of the lower cutter near the first cutter and the second cutter. The first guide block and the second guide block are respectively clearance-fitted with the side walls on opposite sides of the guide boss.

[0012] As a further description of the technical solution of this utility model, the electrode cutting mechanism further includes a position adjustment component, which includes a mounting plate and a third driving member for driving the mounting plate to move horizontally. The upper cutting blade assembly, the lower cutting blade assembly and the lifting assembly are all disposed on the mounting plate.

[0013] As a further description of the technical solution of this utility model, the driving end of the lifting component is provided with a mounting base, and both the upper cutting blade component and the lower cutting blade component are connected to the mounting base;

[0014] The bottom of the mounting base is provided with a limiting guide post in the vertical direction, and the mounting plate is provided with a limiting guide cylinder. The limiting guide post is slidably connected to the limiting guide cylinder.

[0015] As a further description of the technical solution of this utility model, the bottom of the limiting guide post is connected to a limiting plate, and the limiting plate is used to abut against the limiting guide cylinder.

[0016] As a further description of the technical solution of this utility model, the position adjustment component also includes a displacement sensor for sensing the moving distance of the mounting plate.

[0017] As a further description of the technical solution of this utility model, the electrode cutting mechanism also includes a waste recycling component, the waste recycling component includes a waste discharge pipe, the lower cutter component also includes a cutter fixing seat, the lower cutter is disposed on the cutter fixing seat, and the bottom of the cutter fixing seat is connected to the waste discharge pipe.

[0018] As a further description of the technical solution of this utility model, the waste recycling component also includes a waste bin, which is located below the discharge port of the waste discharge pipe.

[0019] In summary, this utility model has at least the following advantages:

[0020] The tab cutting mechanism provided by this utility model, through the cooperation of a first cutter, a second cutter, and a lower cutter, can simultaneously cut both positive and negative tabs. This not only improves battery production efficiency but also enhances the dimensional consistency of the cut positive and negative tabs. By providing multiple suction holes at the top of the lower cutter for adsorption and fixation during tab cutting, the tabs are not damaged, ensuring proper electrical connection afterward. Furthermore, the need for a pressing assembly is eliminated, simplifying the structure of the tab cutting mechanism and reducing production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the electrode cutting mechanism in Embodiment 1 of this utility model;

[0022] Figure 2 This is a front view of the first cutter, the second cutter, and the lower cutter in Embodiment 1 of this utility model.

[0023] Figure 3 This is a side view of the first cutter and the lower cutter in Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the back structure of the lower cutter in Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the electrode cutting mechanism in Embodiment 2 of this utility model;

[0026] Figure 6 This is a schematic diagram of the tab cutting mechanism in Embodiment 3 of this utility model.

[0027] Marked in the image:

[0028] 1. Upper cutting blade assembly; 11. First cutting blade; 111. First cutting edge; 112. First guide block; 12. First driving component; 13. Second cutting blade; 131. Second cutting edge; 132. Second guide block; 14. Second driving component;

[0029] 2. Lower cutter assembly; 21. Lower cutter; 211. Suction hole; 212. Air blowing hole; 213. Guide boss; 22. Cutter fixing seat;

[0030] 3. Lifting assembly; 31. Mounting base; 32. Limiting guide post; 33. Limiting plate;

[0031] 4. Position adjustment assembly; 41. Mounting plate; 42. Third drive component; 43. Limit guide cylinder; 44. Displacement sensor;

[0032] 5. Waste recycling components; 51. Waste discharge pipes; 52. Waste bins. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] refer to Figures 1 to 4 The tab cutting mechanism provided in this embodiment includes an upper cutting blade assembly 1, a lower cutting blade assembly 2, and a lifting assembly 3. The upper cutting blade assembly 1 is located above the lower cutting blade assembly 2, and both the upper cutting blade assembly 1 and the lower cutting blade assembly 2 are connected to the drive end of the lifting assembly 3. The upper cutting blade assembly 1 and the lower cutting blade assembly 2 can move up and down simultaneously in the vertical direction under the drive of the lifting assembly 3. In some embodiments, the lifting assembly 3 may include a drive motor or a drive cylinder.

[0037] The upper cutting assembly 1 includes a first cutting blade 11, a first driving member 12 for driving the first cutting blade 11 to move vertically, a second cutting blade 13, and a second driving member 14 for driving the second cutting blade 13 to move vertically. Both the first driving member 12 and the second driving member 14 may include a drive motor or a drive cylinder. The first driving member 12 and the second driving member 14 are arranged side by side, and the first cutting blade 11 and the second cutting blade 13 are arranged side by side. The first driving member 12 and the second driving member 14 can simultaneously drive the first cutting blade 11 and the second cutting blade 13 downward, respectively, to achieve simultaneous cutting of the positive electrode tab and the negative electrode tab, thereby improving the efficiency of the tab cutting operation and ensuring the consistency of the dimensions of the positive electrode tab and the negative electrode tab after cutting, which is beneficial to improving the consistency of battery products.

[0038] The lower cutter assembly 2 includes a lower cutter 21, which is offset below the first cutter 11 and the second cutter 13. The top of the lower cutter 21 has multiple suction holes 211 for adsorbing and fixing the positive and negative electrode tabs. In this embodiment, the sidewall of the first cutter 11 is perpendicular to the bottom wall, the sidewall of the second cutter 13 is perpendicular to the bottom wall, and the sidewall of the lower cutter 21 is perpendicular to the bottom wall; that is, the bottom of the first cutter 11, the bottom of the second cutter 13, and the top of the lower cutter 21 all have planar structures.

[0039] During the cutting operation, the battery cell is first moved between the upper cutting blade assembly 1 and the lower cutting blade assembly 2, so that the positive and negative electrode tabs are positioned above the lower cutting blade 21. The lifting assembly 3 drives the upper cutting blade assembly 1 and the lower cutting blade assembly 2 upward, so that the top of the lower cutting blade 21 abuts against the lower surface of the positive and negative electrode tabs. The suction hole 211 adsorbs and fixes the positive and negative electrode tabs. At this time, the ends of the positive and negative electrode tabs to be cut are suspended on one side of the lower cutting blade 21 and are separated. The first cutter 11 and the second cutter 13 are located directly below each other. The first cutter 11 and the second cutter 13 descend under the drive of the first drive member 12 and the second drive member 14, respectively. During their descent, the sidewalls of the first cutter 11 and the second cutter 13 are in clearance fit with the sidewall of the lower cutter 21 to form a cutting surface. The cutting surface is perpendicular to the positive and negative electrode tabs, thereby cutting off the ends of the positive and negative electrode tabs to be cut, thus completing the tab cutting operation. The positive and negative electrode tabs are directly adsorbed and fixed through the suction hole 211, which avoids damage to the tabs and eliminates the need for a pressing component, simplifying the structure of the tab cutting mechanism and reducing production costs.

[0040] In some embodiments, the lower cutter 21 is provided with a plurality of air blowing holes 212 on the side wall near the first cutter 11 and the second cutter 13. The air blowing holes 212 can blow air onto the bottom of the first cutter 11 and the second cutter 13 during the cutting operation to prevent cutting waste from sticking to the first cutter 11 or the second cutter 13 and avoid interfering with the next cutting operation.

[0041] In this embodiment, the bottom of the first cutter 11 is inclined downwards from the end away from the second cutter 13 towards the end closer to the second cutter 13 to form a first cutting edge 111, and the bottom of the second cutter 13 is inclined downwards from the end away from the first cutter 11 towards the end closer to the first cutter 13 to form a second cutting edge 131. Since both the first cutting edge 111 and the second cutting edge 131 are inclined, they maintain point contact with the positive electrode tab and the negative electrode tab respectively during the downward movement, thereby ensuring the flatness of the cut surfaces of the positive electrode tab and the negative electrode tab and effectively improving the cutting quality.

[0042] As a further optimization, a first guide block 112 is provided at the end of the first cutting edge 111 near the second cutting blade 13, and a second guide block 132 is provided at the end of the second cutting edge 131 near the first cutting blade 11. A guide boss 213 is provided on the sidewall of the lower cutting blade 21 near the first cutting blade 11 and the second cutting blade 13. The first guide block 112 and the second guide block 132 are respectively clearance-fitted with the sidewalls on opposite sides of the guide boss 213. The guide boss 213 serves to limit and guide movement. On the one hand, it restricts the first guide block 112 and the second guide block 132 from approaching each other, maintaining a fixed distance between them and improving the straightness of the downward movement of the first cutting blade 11 and the second cutting blade 13. On the other hand, it guides the first guide block 112 and the second guide block 132 to move downward along the opposite sidewalls of the guide boss 213, further improving the straightness of the downward movement of the first cutting blade 11 and the second cutting blade 13, thereby improving the cutting quality.

[0043] The tab cutting mechanism of this embodiment, through the cooperation of the first cutter, the second cutter, and the lower cutter, can simultaneously cut the positive and negative tabs, which is beneficial to improving battery production efficiency and the dimensional consistency of the positive and negative tabs after cutting. By providing multiple suction holes on the top of the lower cutter for adsorption and fixation during tab cutting, the tabs are not damaged, ensuring normal electrical connection afterward. This also eliminates the need for a pressing assembly, simplifying the structure of the tab cutting mechanism and reducing production costs. Air blowing holes prevent cutting waste from sticking to the first and second cutters, ensuring the normal operation of subsequent cutting. The inclined first and second cutting edges improve the flatness of the tab cutting and enhance cutting quality. The cooperation of the first guide block, the second guide block, and the guide boss improves the straightness of the downward movement of the first and second cutters, further enhancing cutting quality.

[0044] Example 2

[0045] As a further optimization of Example 1, refer to Figure 5 The electrode cutting mechanism also includes a position adjustment assembly 4, which includes a mounting plate 41 and a third drive member 42 for driving the mounting plate 41 to move horizontally. The upper cutter assembly 1, the lower cutter assembly 2, and the lifting assembly 3 are all mounted on the mounting plate 41. The position adjustment assembly 4 can be used to adjust the horizontal position of the upper cutter assembly 1 and the lower cutter assembly 2 to adapt to different cell specifications and production requirements. In some embodiments, the third drive member 42 may include a drive motor or a drive cylinder.

[0046] The lifting assembly 3 has a mounting base 31 at its drive end, and both the upper cutting blade assembly 1 and the lower cutting blade assembly 2 are connected to the mounting base 31. Limiting guide posts 32 are vertically positioned at the four corners of the bottom of the mounting base 31, and four corresponding limiting guide cylinders 43 are provided on the mounting plate 41. The limiting guide posts 32 are slidably connected within the limiting guide cylinders 43. Through the cooperation of the limiting guide posts 32 and the limiting guide cylinders 43, it is ensured that the upper cutting blade assembly 1 and the lower cutting blade assembly 2 always move vertically along the same straight line under the drive of the lifting assembly 3, thereby improving the straightness of the upward movement of the upper cutting blade assembly 1 and the lower cutting blade assembly 2, which is beneficial to improving the quality of the cutting operation.

[0047] As a further optimization, a limiting plate 33 is connected to the bottom of the limiting guide post 32. The limiting plate 33 abuts against the limiting guide cylinder 43 to limit the upward movement distance of the limiting guide post 32. This indirectly limits the upward movement distance of the upper cutting blade assembly 1 and the lower cutting blade assembly 2, thereby improving the accuracy of the cutting operation. In some embodiments, two limiting guide posts 32 that are close to each other can be connected to the same limiting plate 33.

[0048] In some embodiments, the position adjustment assembly 4 further includes a displacement sensor 44 for sensing the movement distance of the mounting plate 41. Specifically, the displacement sensor 44 includes an optical baffle disposed on the mounting plate 41, and a first optical switch and a second optical switch disposed on one side of the third drive member 42. The distance between the first optical switch and the second optical switch is equal to the allowable movement distance of the mounting plate 41. When the optical baffle cuts off the optical path of the first optical switch, it means that the mounting plate 41 is in the initial position; when the optical baffle moves to the position of the second optical switch and cuts off its optical path, it means that the movement distance of the mounting plate 41 has reached the upper limit, and the third drive member 42 will stop driving. This is beneficial for controlling the accuracy of the horizontal movement of the upper cutter assembly 1 and the lower cutter assembly 2, thereby improving the quality of the cutting operation.

[0049] Example 3

[0050] As a further optimization of Example 2, refer to Figure 6 The electrode cutting mechanism also includes a waste recycling component 5, which includes a waste discharge pipe 51. The lower cutter assembly 2 also includes a cutter fixing seat 22, which includes an upper opening, a lower opening, and a connecting cavity located between the upper opening and the lower opening. The lower cutter 21 is disposed on one side of the upper opening of the cutter fixing seat 22. The lower opening of the cutter fixing seat 22 is connected to the waste discharge pipe 51. The cutting waste generated during the cutting operation will enter the waste discharge pipe 51 through the connecting cavity and the lower opening.

[0051] In some embodiments, the waste recycling component 5 also includes a waste bin 52, which is located below the discharge port of the waste discharge pipe 51 and can collect the cutting waste in a centralized manner for subsequent transfer and disposal.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A tab cutting mechanism, characterized in that, It includes an upper cutting blade assembly (1), a lower cutting blade assembly (2) and a lifting assembly (3). The upper cutting blade assembly (1) is located above the lower cutting blade assembly (2), and both the upper cutting blade assembly (1) and the lower cutting blade assembly (2) are connected to the driving end of the lifting assembly (3). The upper cutting blade assembly (1) includes a first cutting blade (11), a first driving member (12) for driving the first cutting blade (11) to move in a vertical direction, a second cutting blade (13) and a second driving member (14) for driving the second cutting blade (13) to move in a vertical direction, wherein the first cutting blade (11) and the second cutting blade (13) are arranged side by side; The lower cutter assembly (2) includes a lower cutter (21), which is offset below the first cutter (11) and the second cutter (13). The top of the lower cutter (21) is provided with a plurality of suction holes (211).

2. The electrode cutting mechanism according to claim 1, characterized in that, The lower cutter (21) has multiple air holes (212) on its side wall near the first cutter (11) and the second cutter (13).

3. The electrode cutting mechanism according to claim 1, characterized in that, The bottom of the first cutter (11) is inclined downwards from the end away from the second cutter (13) toward the end close to the second cutter (13) to form a first cutting edge (111), and the bottom of the second cutter (13) is inclined downwards from the end away from the first cutter (11) toward the end close to the first cutter (11) to form a second cutting edge (131).

4. The tab cutting mechanism according to claim 3, characterized in that, A first guide block (112) is provided at one end of the first blade (111) near the second cutter (13), and a second guide block (132) is provided at one end of the second blade (131) near the first cutter (11). A guide boss (213) is provided on the side wall of the lower cutter (21) near the first cutter (11) and the second cutter (13). The first guide block (112) and the second guide block (132) are respectively in clearance fit with the side walls on opposite sides of the guide boss (213).

5. The electrode cutting mechanism according to claim 1, characterized in that, It also includes a position adjustment component (4), which includes a mounting plate (41) and a third drive member (42) for driving the mounting plate (41) to move in the horizontal direction. The upper cutter assembly (1), the lower cutter assembly (2) and the lifting assembly (3) are all disposed on the mounting plate (41).

6. The tab cutting mechanism according to claim 5, characterized in that, The lifting assembly (3) has a mounting base (31) at its drive end, and the upper cutter assembly (1) and the lower cutter assembly (2) are both connected to the mounting base (31). The bottom of the mounting base (31) is provided with a limiting guide post (32) in the vertical direction, and the mounting plate (41) is provided with a limiting guide cylinder (43). The limiting guide post (32) is slidably connected to the limiting guide cylinder (43).

7. The tab cutting mechanism according to claim 6, characterized in that, The bottom of the limiting guide post (32) is connected to a limiting plate (33), which is used to abut against the limiting guide cylinder (43).

8. The tab cutting mechanism according to claim 5, characterized in that, The position adjustment assembly (4) also includes a displacement sensor (44) for sensing the movement distance of the mounting plate (41).

9. The tab cutting mechanism according to claim 1, characterized in that, It also includes a waste recycling component (5), which includes a waste discharge pipe (51). The lower cutter component (2) also includes a cutter fixing seat (22), and the lower cutter (21) is disposed on the cutter fixing seat (22). The bottom of the cutter fixing seat (22) is connected to the waste discharge pipe (51).

10. The tab cutting mechanism according to claim 9, characterized in that, The waste recycling component (5) also includes a waste bin (52), which is located below the discharge port of the waste discharge pipe (51).

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