Battery aluminum shell mouth section trimming device

Abstract

This utility model discloses a battery aluminum shell edge trimming device, belonging to the field of battery aluminum shell processing. It mainly includes a cutting assembly, which comprises a movable plate connected by four sets of support pillars. Cutting sections are installed on the four sides of the movable plate, each including a side connecting block mounted on the side of the movable plate. Each side connecting block has a U-shaped groove and a second U-shaped groove on its connecting side to the movable plate. A fixed seat is installed on the side connecting block, and a second cylinder is installed on the fixed seat. The output end of the second cylinder is connected to a connecting plate, and a third cylinder is installed on the connecting plate. The telescopic end of the third cylinder is connected to the fixed section. A U-shaped rod is installed on the fixed section, and a saw blade movably passes through the two right-angled ends of the U-shaped rod. The saw blade has inserts at both ends that form sliding pairs with the right-angled ends of the U-shaped rod. A pushing part is installed on the connecting plate. This battery aluminum shell edge trimming device, by connecting the movable plate and the cutting sections through support pillars, replaces traditional rotary cutting, controls the saw blade to achieve independent cutting, disperses stress, and reduces burrs.

Description

Technical Field

[0001] This utility model relates to the field of battery aluminum shell processing technology, and in particular to a battery aluminum shell opening trimming device. Background Technology

[0002] Against the backdrop of the rapid development of the new energy industry, lithium-ion batteries, as core energy storage components, are directly affected by the precision and efficiency of their manufacturing processes, impacting battery performance and safety. The aluminum casing, a key packaging structure for lithium-ion batteries, is particularly important for the quality of its opening processing. Edge trimming is a critical process in aluminum casing manufacturing, directly affecting the casing's sealing performance, assembly compatibility, and subsequent welding quality. Insufficient dimensional accuracy or the presence of burrs on the edges can not only affect battery assembly efficiency but may also lead to safety hazards such as seal failure and short circuits.

[0003] In the field of battery aluminum casing manufacturing, rotary cutting is currently a widely used method for edge trimming, which uses a rotating cutter to perform circumferential cutting on the aluminum casing opening to complete the edge trimming. However, this structure has significant technical bottlenecks: First, during rotary cutting, the contact angle between the cutter and various parts of the aluminum casing opening, as well as the cutting force state, continuously change. This unevenness makes it difficult to precisely control the trimmed edge dimensions, failing to meet the increasingly high-precision processing requirements of the new energy industry. Second, the shear stress generated during rotary cutting is concentrated at the edge of the aluminum casing, easily causing plastic deformation of the material, resulting in defects such as wrinkles and burrs on the edge. To eliminate these problems, the cutter movement trajectory of the rotary cutting structure is highly fixed, making it difficult to adapt to different shapes and sizes of aluminum casing openings through simple adjustments. Therefore, a battery aluminum casing opening trimming device needs to be designed.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a battery top cover encoder feeding device to solve the problem that in the manufacturing of aluminum battery shells, rotary cutting structures are widely used, but they have problems such as difficulty in controlling the cutting edge size and easy burr generation.

[0006] The technical solution adopted by this application to solve its technical problem is: a battery aluminum shell opening trimming device. The device includes a processing table, a clamping assembly, and a cutting assembly. The cutting assembly includes four sets of support pillars mounted on the processing table, with a movable plate connected to one end of each pillar. Cutting sections are mounted on the four sides of the movable plate, arranged in a rectangular pattern. Each cutting section includes a side connecting block mounted on the side of the movable plate. The side connecting block has a concave structure with a U-shaped groove and a second U-shaped groove on its connecting side to the movable plate. A fixed seat is mounted on the bottom surface of the side connecting block near one end. A second cylinder is mounted on the fixed seat, with its output end extending horizontally and connected to a connecting plate. A third cylinder is vertically mounted on the connecting plate, with its cylinder body passing through the U-shaped groove and its telescopic end extending downward through the connecting plate and connected to the fixed part. A U-shaped rod is horizontally mounted on the fixed part, with a saw blade movably passing between the two right-angled ends of the U-shaped rod. The inserts at both ends of the saw blade form sliding pairs with the right-angled ends of the U-shaped rod. A pushing part is mounted on the side of the connecting plate to allow the saw blade to reciprocate horizontally.

[0007] Furthermore, a pushing part is installed on the side of the connecting plate. The pushing part includes a connector installed on the side of the connecting plate. A motor is installed on the upper surface of one end of the connector. The output shaft of the motor passes vertically downward through the connector and is keyed to an eccentric cam. A limiting plate is installed on one end of the insert rod of the saw blade. A push rod is horizontally installed on the side of the limiting plate facing the cam. The push rod has a contact part. A spring is sleeved on the push rod. One end of the spring is connected to the limiting plate, and the other end of the spring is connected to the contact part. The contact part is always in contact with the cam under the action of the spring.

[0008] Furthermore, two sets of sliders are installed on the connecting plate, and a slide rail adapted to the slider is installed on the bottom surface of the side block. The cooperation between the slide rail and the slider can guide the movement of the connecting plate horizontally.

[0009] Furthermore, the clamping assembly is provided in two sets, symmetrically distributed on the processing table. Each set of the clamping assembly includes a base, which is fixed to the processing table by anchor bolts. A first cylinder is horizontally mounted on the base, and a clamping plate is installed on the telescopic end of the first cylinder.

[0010] Furthermore, an elastic buffer layer made of polyurethane material is provided at the contact position between the clamp and the aluminum battery casing.

[0011] Furthermore, each of the four sets of support columns is fitted with a movable plate, which is fixed to the support column by fasteners and can be adjusted in height along the axis of the support column.

[0012] Furthermore, a strain gauge sensor is embedded in the elastic buffer layer where the clamping plate contacts the aluminum shell. The strain gauge sensor senses the degree of deformation on the surface of the clamping plate.

[0013] The beneficial effects of this application are as follows: The battery aluminum shell edge cutting device provided by this application, with four sets of pillars connecting the movable plate and four sets of cutting sections distributed on the four sides of the movable plate, replaces the traditional rotary cutting structure and effectively solves the problem of insufficient cutting precision. In each cutting section, the side connecting block cooperates with the double U-shaped groove of the movable plate, and in conjunction with the second and third cylinders, the horizontal position and cutting depth of the saw blade can be precisely controlled, realizing independent cutting of the four sides of the aluminum shell, avoiding dimensional deviations caused by uneven blade contact angle and force; the reciprocating linear motion of the saw blade in the horizontal plane makes the shearing stress evenly distributed, greatly reducing the wrinkles and burrs on the edge of the aluminum shell, and reducing the subsequent grinding cost.

[0014] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is an overall schematic diagram of the battery aluminum casing edge trimming device in this application;

[0017] Figure 2 for Figure 1 A schematic diagram of the bottom structure;

[0018] Figure 3 for Figure 2 Exploded view;

[0019] Figure 4 for Figure 2 Enlarged view of point A;

[0020] The following are the labeling elements in the figure:

[0021] 1. Processing component; 11. Processing table; 12. Guide rail; 13. Material receiving platform; 2. Clamping component; 21. Base; 22. First cylinder; 23. Clamping plate; 3. Cutting component; 31. Support column; 32. Movable plate; 34. Side connecting block; 35. Fixed seat; 36. Second cylinder; 37. Connecting plate; 38. Slide rail; 39. Slider; 310. Third cylinder; 311. Fixed part; 312. Saw blade; 313. Insert rod; 314. Limiting plate; 315. Connector; 316. Motor; 317. Cam; 318. Push rod; 319. Spring; 320. U-shaped rod. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] like Figures 1 to 4 As shown, this application provides a battery aluminum shell opening trimming device, including a processing component 1, a clamping component 2 and a cutting component 3.

[0025] The processing component 1 includes a processing table 11, on which two sets of linear guide rails 12 are symmetrically fixed along a parallel direction. A material support platform 13 is slidably installed on the two sets of guide rails 12. The material support platform 13 is used to place the aluminum battery shell and can slide smoothly along the direction of the guide rails 12. The surface of the material support platform 13 is provided with anti-slip rubber pads and positioning grooves (not shown in the figure). The size of the positioning grooves matches the shape of common aluminum battery shells, which can effectively prevent the aluminum shell from shifting during processing.

[0026] The cutting assembly 3 includes four sets of support columns 31 fixedly installed on the processing table 11. One end of each set of support columns 31 is connected to a movable plate 32. The movable plate 32 is fixedly sleeved on the four sets of support columns 31. The movable plate 32 is fixed to the support column 31 by fasteners and can be adjusted in height along the axis of the support column 31 to adapt to the processing requirements of different specifications of battery aluminum shells.

[0027] Cutting sections are installed on the four sides of the movable plate 32. The four sets of cutting sections are rectangularly distributed and correspond to the four sides of the battery aluminum shell, respectively, which can realize independent cutting of the four sides. Two sets of cutting sections are shown in the attached drawings of this application.

[0028] Each cutting section includes a side connecting block 34 fixedly installed on the side of the movable plate 32. The side connecting block 34 has a concave structure with a U-shaped groove and a second U-shaped groove on the side connecting to the movable plate 32 to form a through sliding channel. A fixing seat 35 is fixedly installed on the bottom surface of the side connecting block 34 near one end. A second cylinder 36 is fixedly installed on the fixing seat 35. Its output end extends horizontally and is fixedly connected to a connecting plate 37. A third cylinder 310 is vertically fixedly installed on the connecting plate 37. The cylinder body of the third cylinder 310 passes through the U-shaped groove, and its telescopic end passes downward through the connecting plate 37 and is fixedly connected to a fixing part 311.

[0029] A U-shaped rod 320 is horizontally mounted on the fixed part 311. A saw blade 312 is movably inserted between the two right-angled ends of the U-shaped rod 320. The inserts 313 at both ends of the saw blade 312 form sliding pairs with the right-angled ends of the U-shaped rod 320, allowing the saw blade 312 to reciprocate in the horizontal plane.

[0030] During operation, the second cylinder 36 drives the saw blade 312 to move horizontally closer to or further away from the opening of the battery aluminum shell, thereby adjusting the cutting position laterally; the third cylinder 310 drives the saw blade 312 to move vertically up and down, thereby adjusting and controlling the position of the saw blade 312.

[0031] Meanwhile, a pushing part is installed on the side of the connecting plate 37. The pushing part includes a connector 315 fixedly installed on the side of the connecting plate 37. A motor 316 is fixedly installed on the upper surface of one end of the connector 315. The output shaft of the motor 316 passes vertically downward through the connector 315 and is keyed to an eccentric cam 317. At the same time, a limiting plate 314 is fixedly installed on one end of the insert 313 of the saw blade 312. A push rod 318 is horizontally installed on the side of the limiting plate 314 facing the cam 317. The push rod 318 has a contact part. A spring 319 is sleeved on the push rod 318. One end of the spring 319 is connected to the limiting plate 314, and the other end of the spring 319 is connected to the contact part. The contact part is adapted to always be in contact with the cam 317 under the action of the spring 319.

[0032] When the motor 316 drives the cam 317 to rotate, its eccentric profile drives the saw blade 312 to reciprocate linearly within the guide groove of the U-shaped rod 320 via the push rod 318. The preload provided by the spring 319 ensures the stability of motion transmission while compensating for the gap between the cam 317 and the push rod 318. This structure converts the rotational motion of the motor 316 into a high-frequency reciprocating cutting motion of the saw blade 312.

[0033] In some embodiments, such as Figures 3-4As shown, two sets of sliders 39 are fixedly installed on the connecting plate 37, and a slide rail 38 adapted to the sliders 39 is fixedly installed on the bottom surface of the side connecting block 34. The cooperation between the slide rail 38 and the sliders 39 can guide the movement of the connecting plate 37 horizontally.

[0034] In other embodiments, such as Figures 2-3 As shown, the clamping components 2 are provided in two sets, symmetrically distributed on both sides of the material support platform 13 on the processing table 11. Each set of clamping components 2 includes a base 21, which is fixed to the processing table 11 by anchor bolts. A first cylinder 22 is horizontally fixedly installed on the base 21. A clamping plate 23 is fixedly installed on the telescopic end of the first cylinder 22. An elastic buffer layer made of polyurethane material is provided at the contact position between the clamping plate 23 and the aluminum battery shell. This provides sufficient clamping force and avoids damage to the surface of the aluminum battery shell during clamping.

[0035] During operation, the extension and retraction of the first cylinder 22 is controlled by an external control system, which can adjust the clamping plate 23 to move closer to or further away from the battery aluminum shell on the material support platform 13, so as to achieve fast and stable clamping of aluminum shells of different sizes. The clamping force can be adjusted according to the material and thickness of the aluminum shell, effectively improving the versatility and applicability of the device.

[0036] In this application, a strain gauge sensor is embedded in the elastic buffer layer where the clamping plate 23 contacts the aluminum shell. The strain gauge sensor indirectly monitors the change in clamping force by sensing the degree of deformation on the surface of the clamping plate 23. During normal clamping, the sensor outputs a stable electrical signal; once the aluminum shell loosens, the deformation of the clamping plate 23 decreases, and the electrical signal output by the sensor changes significantly. Upon receiving the signal, the control system immediately activates the first cylinder 22 to increase the clamping force and re-secure the aluminum shell. In addition, a vibration sensor is installed below the material support platform 13 to monitor the overall vibration of the aluminum shell during the cutting process. If the vibration amplitude increases abnormally, it will also trigger the system to check and adjust the clamping status, ensuring the stability of the aluminum shell during processing in all aspects.

[0037] Working principle: When using the battery aluminum shell edge trimming device of this utility model, the first step is to place the battery aluminum shell into the positioning groove of the material receiving platform 13. The groove is adapted to the shape of the aluminum shell, and with the anti-slip rubber pad, it can effectively prevent the aluminum shell from shifting during processing. Subsequently, the external control system activates the first cylinder 22 of the clamping assembly 2, which drives the clamping plate 23 to stably clamp the aluminum shell. The elastic buffer layer on the clamping plate 23 ensures the clamping force while avoiding damage to the surface of the aluminum shell.

[0038] Simultaneously, depending on the specifications of the aluminum shell, the operator can adjust the installation height of the movable plate 32 on the support column 31 to adapt the cutting assembly 3 to aluminum shells of different heights. The four cutting sections of the cutting assembly 3 are rectangularly distributed, corresponding to the four sides of the aluminum shell. In each cutting section, the second cylinder 36 pushes the connecting plate 37, causing the saw blade 312 to move horizontally closer to the opening of the aluminum shell, completing the lateral adjustment of the cutting position; the third cylinder 310 controls the vertical lifting and lowering of the saw blade 312 to adjust the cutting depth.

[0039] At the same time, the motor 316 drives the cam 317 to rotate, which drives the saw blade 312 to reciprocate linearly within the U-shaped rod 320 via the push rod 318, cutting the four sides of the aluminum shell separately. During this process, the slider 39 on the connecting plate 37 cooperates with the slide rail 38 on the bottom surface of the side block 34 to provide horizontal guidance for the movement of the connecting plate 37.

[0040] Compared to traditional rotary cutting structures, this device features four sets of movable, individually shearing mechanisms that enable independent cutting of the four sides of the aluminum shell opening. This avoids the problems of uneven contact angle and force during circumferential cutting of the blade in traditional rotary cutting. Each cutting section can be individually controlled according to the actual conditions of the aluminum shell edge, significantly improving cutting accuracy. The reciprocating linear motion of the saw blade 312 evenly distributes shearing stress, effectively reducing the generation of wrinkles and burrs on the aluminum shell edge, and significantly reducing the cost of subsequent grinding processes.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery aluminum casing edge trimming device, comprising a processing table (11), a clamping assembly (2), and a cutting assembly (3), characterized in that: The cutting assembly (3) includes four sets of support columns (31) installed on the processing table (11), and one end of each set of support columns (31) is connected to a movable plate (32); Cutting sections are installed on the four sides of the movable plate (32). The four sets of cutting sections are arranged in a rectangular shape. Each set of cutting sections includes a side connecting block (34) installed on the side of the movable plate (32). The side connecting block (34) has a concave structure and has a U-shaped groove. At the same time, a U-shaped groove is opened on the side connecting to the movable plate (32). A fixed seat (35) is installed on the bottom surface of the side block (34) near one end. A second cylinder (36) is installed on the fixed seat (35), and its output end extends horizontally and is connected to a connecting plate (37). A third cylinder (310) is vertically installed on the connecting plate (37). The cylinder body of the third cylinder (310) is set through a U-shaped groove, and its telescopic end extends downward through the connecting plate (37) and is connected to a fixing part (311). A U-shaped rod (320) is horizontally mounted on the fixing part (311). A saw blade (312) is movably passed through the two right-angled ends of the U-shaped rod (320). The inserts (313) at both ends of the saw blade (312) form sliding pairs with the right-angled ends of the U-shaped rod (320). A pushing part that allows the saw blade (312) to reciprocate horizontally is installed on the side of the connecting plate (37).

2. The battery aluminum casing edge trimming device according to claim 1, characterized in that: A pushing part is installed on the side of the connecting plate (37). The pushing part includes a connector (315) installed on the side of the connecting plate (37). A motor (316) is installed on the upper surface of one end of the connector (315). The output shaft of the motor (316) passes vertically downward through the connector (315) and is keyed to an eccentric cam (317). A limiting plate (314) is installed on one end of the insert (313) of the saw blade (312). A push rod (318) is horizontally installed on the side of the limiting plate (314) facing the cam (317). The push rod (318) has a contact part. A spring (319) is sleeved on the push rod (318). One end of the spring (319) is connected to the limiting plate (314), and the other end of the spring (319) is connected to the contact part. The contact part is always in contact with the cam (317) under the action of the spring (319).

3. The battery aluminum casing edge trimming device according to claim 2, characterized in that: Two sets of sliders (39) are installed on the connecting plate (37). The bottom surface of the side block (34) is equipped with a slide rail (38) that is adapted to the sliders (39). The cooperation between the slide rail (38) and the sliders (39) can guide the movement of the connecting plate (37) horizontally.

4. The battery aluminum casing edge trimming device according to claim 3, characterized in that: Two sets of clamping components (2) are provided and are symmetrically distributed on the processing table (11). Each set of clamping components (2) includes a base (21). The base (21) is fixed to the processing table (11) by anchor bolts. A first cylinder (22) is horizontally installed on the base (21). A clamping plate (23) is installed on the telescopic end of the first cylinder (22).

5. The battery aluminum casing edge trimming device according to claim 4, characterized in that: An elastic buffer layer made of polyurethane material is provided at the contact position between the clamp (23) and the aluminum shell of the battery.

6. The battery aluminum casing edge trimming device according to claim 5, characterized in that: The four sets of support columns (31) are fitted with movable plates (32), which are fixed to the support columns (31) by fasteners and can be adjusted in height along the axis of the support columns (31).

7. The battery aluminum casing edge trimming device according to claim 6, characterized in that: A strain gauge sensor is embedded in the elastic buffer layer in contact with the aluminum shell of the clamping plate (23). The strain gauge sensor senses the degree of deformation on the surface of the clamping plate (23).

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