A tab adjusting and stretching roller and a tab adjusting and stretching device

Abstract

This utility model relates to the field of battery manufacturing technology, specifically to a tab adjustment and extension roller and a tab adjustment and extension device. This utility model provides a tab adjustment and extension roller, including a shaft with a cavity inside. The shaft also has an air inlet communicating with the cavity, and an adjustment device arranged radially along the shaft. The adjustment device is connected to the cavity and includes multiple lifting sleeves and an expansion block. The lifting sleeves are arranged circumferentially within the shaft, and the expansion blocks are fixedly connected to the shaft. Each expansion block has a through hole, and the lifting sleeves are slidably and sealingly connected to the through hole. A portion of the lifting sleeve can extend through the through hole radially outward from the shaft. A pad is provided on the radially outward side of the lifting sleeve, and a washer is provided on the side of the pad facing away from the lifting sleeve, with the washer fitted onto the outside of the shaft. This utility model can reduce tab deformation or incomplete extension caused by the thickness of the Teflon tape, improving battery quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, specifically to a tab adjustment and extension roller and a tab adjustment and extension device. Background Technology

[0002] Currently, in the manufacturing process of cylindrical batteries, the material needs to be compacted during the rolling process. Before compaction, in order to prevent the tabs from breaking after compaction, the tabs need to be stretched in advance.

[0003] Current technology involves applying Teflon tape to the roller surface to stretch the electrode tabs. However, due to long-term production, the Teflon tape is prone to wear and tear and needs frequent replacement, affecting battery quality and production efficiency. Furthermore, frequent Teflon tape replacement increases maintenance costs and production downtime. Utility Model Content

[0004] To address the technical problem that the existing method of using Teflon tape for tab extension affects battery quality and production efficiency, this utility model provides a tab adjustment and extension roller and a tab adjustment and extension device to reduce tab deformation or incomplete extension caused by the thickness of the Teflon tape, thereby improving battery quality and production efficiency.

[0005] This utility model provides an adjustable extension roller with tabs, including a shaft body with a cavity inside. The shaft body also has an air inlet communicating with the cavity. The shaft body also has an adjustment device arranged radially thereafter, which is connected to the cavity. The adjustment device includes multiple lifting sleeves and an air block. The multiple lifting sleeves are arranged circumferentially inside the shaft body. The air block is fixedly connected to the shaft body and has a through hole. The lifting sleeve is slidably and sealingly connected to the through hole. A portion of the lifting sleeve can pass through the through hole in a radially outward direction along the shaft body. A pad is provided on the radially outward side of the lifting sleeve, and a washer is provided on the side of the pad facing away from the lifting sleeve. The washer is sleeved on the outside of the shaft body.

[0006] Furthermore, the lifting sleeve is provided with a first limiting part, and the air block is provided with a second limiting part. The first limiting part and the second limiting part cooperate to limit the displacement stroke of the lifting sleeve.

[0007] Furthermore, an elastic element is provided between the first limiting part and the second limiting part.

[0008] Furthermore, the elastic element is a spring, which is fixed to the side of the first limiting portion facing the second limiting portion; or, the spring is fixed to the side of the second limiting portion facing the first limiting portion.

[0009] Furthermore, multiple lifting sleeves are arranged in an array along the circumference inside the shaft body.

[0010] Furthermore, a groove is provided on the outer side of the shaft, and a washer is fitted into the groove.

[0011] Furthermore, multiple vent holes are provided in the radial direction inside the shaft body, and the vent holes are connected to the through holes.

[0012] Furthermore, the air block is fixedly connected to the shaft by screws.

[0013] This utility model provides an electrode tab adjustment and extension device, including an electrode tab adjustment and extension roller, and an air supply device. An air supply pipe is provided between the air supply device and the air inlet, and a proportional valve is provided in the air supply pipe.

[0014] Furthermore, the electrode adjustment and extension device also includes an air outlet, which is equipped with a pressure relief valve, and the extension roller is also connected to a bearing seat.

[0015] The beneficial effects of this utility model are as follows: This invention improves the adaptability of the stretching roller to electrode tabs of different thicknesses by controlling the air medium, making it widely applicable and usable in all stretching processes of coiled materials. This invention achieves uniform electrode tab stretching, reduces the use of Teflon tape, lowers maintenance costs, improves production efficiency, and ensures stable battery quality.

[0016] This invention features a simple structure and convenient operation. By adjusting the air pressure through a proportional valve, it ensures uniform stress on the tabs during extension, preventing breakage due to stress concentration and ensuring smooth operation of subsequent processes, thus improving the overall reliability and consistency of battery manufacturing. Made of high-strength, wear-resistant materials, this invention extends service life. Its modular design facilitates quick disassembly and maintenance, reducing downtime and improving the overall efficiency of the production line. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of one embodiment of the shaft of this utility model.

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0021] Figure 4 This is a schematic diagram of one embodiment of the adjusting device of this utility model.

[0022] Explanation of main reference numerals: 1-shaft, 11-vent hole, 12-air inlet, 13-cavity, 14-groove, 2-lifting sleeve, 21-first limiting part, 3-expansion block, 31-through hole, 32-second limiting part, 4-pad, 5-washer, 6-spring. Detailed Implementation

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

[0024] like Figures 1-4 As shown, one embodiment of this utility model provides an adjustable extension roller with tabs, including a shaft 1, a cavity 13 inside the shaft 1, and an air inlet 12 communicating with the cavity 13 at the end of the shaft 1. An air supply device supplies compressed air into the cavity 13 inside the shaft 1. The shaft 1 is also provided with an adjustment device arranged radially therein. A vent hole 11 is provided radially in the middle of the shaft 1, which can penetrate the inside and outside of the shaft 1, i.e., connect the cavity 13 to the outside. The adjustment device includes multiple lifting sleeves 2 and multiple air blocks 3. The lifting sleeves 2 are sealed and fitted inside the vent hole 11, or the air blocks 3 are provided with through holes 31. The lifting sleeves 2 and the through holes 31 are slidably connected in a sealed manner. The lifting sleeves 2 are not inside the vent hole 11, and the vent hole 11 communicates with the through holes 31 of the air blocks 3. The air supply device supplies compressed air into the cavity 13 inside the shaft 1. 3. Compressed air pushes the lifting sleeve 2 outward. Multiple lifting sleeves 2 are arranged circumferentially inside the shaft 1. The air expansion block 3 is fixedly connected to the shaft 1 by screws. Part of the lifting sleeve 2 can pass through the through hole 31 in the radial outward direction of the shaft 1. Guided by the air expansion block 3, part of the lifting sleeve 2 pushes out the air expansion block 3, which in turn pushes the pad 4 on the outer side of the air expansion block 3 outward. The pad 4 pushes the washer 5 outward. By changing the position of the washer 5, the thickness of the washer 5 protruding from the shaft 1 is changed, thus flexibly adapting to the stretching of the tabs of material strips of different thicknesses. Figure 2 and Figure 4 As shown, preferably, a plurality of lifting sleeves 2 are arranged in an array along the circumferential direction inside the shaft body 1. In a preferred embodiment, the adjusting device includes four lifting sleeves 2.

[0025] like Figures 2-4As shown, the lifting sleeve 2 is provided with a first limiting part 21, and the air block 3 is provided with a second limiting part 32. The first limiting part 21 and the second limiting part 32 cooperate to limit the displacement stroke of the lifting sleeve 2. A spring 6 is provided between the first limiting part 21 and the second limiting part 32. The spring 6 is fixed to the side of the first limiting part 21 facing the second limiting part 32; or, the spring 6 is fixed to the side of the second limiting part 32 facing the first limiting part 21.

[0026] like Figure 1 As shown, a groove 14 is provided on the outer side of the shaft 1, and the washer 5 is fitted into the groove 14 to achieve stable installation and use of the washer 5.

[0027] One embodiment of this utility model provides an electrode tab adjustment and extension device, including an electrode tab adjustment and extension roller and an air supply device. An air supply pipe is provided between the air supply device and the air inlet 12, and the air supply pipe is equipped with a proportional valve. By adjusting the air pressure through the proportional valve, it is ensured that the electrode tab is subjected to uniform force during the extension process, avoiding breakage due to stress concentration, which would affect subsequent processes and improve the overall reliability and consistency of battery manufacturing. The extension roller is connected to a bearing seat, and the extension roller rotates through the bearing. The electrode tab adjustment and extension device also includes an air outlet, which is equipped with a pressure relief valve. The air outlet also uses a proportional valve to discharge gas for precise air pressure adjustment.

[0028] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention.

Claims

1. A tab conditioning stretch roller characterized by, The device includes a shaft body with a cavity inside. The shaft body also has an air inlet communicating with the cavity. The shaft body also has an adjustment device arranged radially thereafter, which communicates with the cavity. The adjustment device includes multiple lifting sleeves and an expansion block. The multiple lifting sleeves are arranged circumferentially inside the shaft body. The expansion block is fixedly connected to the shaft body and has a through hole. The lifting sleeve is slidably connected to the through hole in a sealed manner. A portion of the lifting sleeve can pass through the through hole in a radially outward direction along the shaft body. A pad is provided on the radially outward side of the lifting sleeve. A washer is provided on the side of the pad facing away from the lifting sleeve. The washer is fitted onto the outside of the shaft body.

2. The tab conditioning stretch roll of claim 1, wherein, The lifting sleeve is provided with a first limiting part, and the air block is provided with a second limiting part. The first limiting part and the second limiting part cooperate to limit the displacement stroke of the lifting sleeve.

3. The tab conditioning stretch roll of claim 2, wherein, An elastic element is provided between the first limiting part and the second limiting part.

4. The tab conditioning stretch roll of claim 3, wherein, The elastic element is a spring, which is fixed to the side of the first limiting part facing the second limiting part; or, the spring is fixed to the side of the second limiting part facing the first limiting part.

5. The tab conditioning stretch roll of claim 1, wherein, Multiple lifting sleeves are arranged in an array along the circumference inside the shaft.

6. The tab conditioning stretch roll of claim 1, wherein, A groove is provided on the outside of the shaft, and a washer is fitted into the groove.

7. The tab conditioning stretch roll of claim 1, wherein, Multiple vent holes are provided in the radial direction inside the shaft body, and the vent holes are connected to the through holes.

8. The tab conditioning stretch roll of claim 1, wherein, The air block is fixedly connected to the shaft by screws.

9. An electrode tab conditioning and spreading device comprising an electrode tab conditioning and spreading roller according to any one of claims 1 to 8, characterized in that It also includes a gas supply device, with a gas supply pipeline between the gas supply device and the gas inlet, and a proportional valve installed in the gas supply pipeline.

10. The tab adjusting and extending device according to claim 9, wherein It also includes an air outlet, which is equipped with a pressure relief valve, and the stretching roller is also connected to a bearing housing.

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