Stopping device for multiple coating areas of transfer coating machine
Through the combination device of Teflon tape and PE film, the position and size of the white space during the coating process are accurately controlled, and the problems of uneven coating and low efficiency in lithium battery manufacturing are solved, the uniformity and stability of coating are achieved, and the production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202421566271.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-03
AI Technical Summary
In the manufacturing process of lithium battery, existing transfer coating machines have problems such as uneven coating, tape and low production efficiency, especially during the coating process, the coating edges are uneven and the middle white space is inaccurate.
The combination device of Teflon tape and PE film is used to accurately control the position and size of the paint on the pole sheet by guiding the scraper roller and the steel roller, and conduct the guide treatment with the stopper plate to achieve full-pole ear coating and form whitening in specific areas.
It improves the uniformity and stability of the coating, solves the problems of uneven edges of the coating and inaccurate white space in the middle, and improves production efficiency and product quality.
Smart Images
Figure CN223159550U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coating, in particular to a material blocking device for multiple coating areas of a transfer coater. Background Technique
[0002] In the process of manufacturing lithium batteries, the coater is one of the key devices. The main function of the coater is to evenly coat the active material on the electrode substrate. In order to achieve a uniform coating effect, precise control of the coating process is required. At present, in the process of manufacturing lithium batteries, the coating link is a crucial one. When the transfer coater is continuously coating, in the traditional material blocking method, problems such as material carrying and uneven coating at the edge of the coating often occur in the middle blank area, which not only affects the quality of the lithium battery but also may lead to a decrease in production efficiency.
[0003] Therefore, it is necessary to develop a new material blocking method to improve the coating effect and efficiency. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a material blocking device for multiple coating areas of a transfer coater to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A material blocking device for multiple coating areas of a transfer coater includes a Teflon tape and a PE film, and the Teflon tape and the PE film are closely attached;
[0006] The Teflon tape and the PE film are guided and transmitted by a doctor roll, and a steel roll is provided at the lower end of the doctor roll. Then, the Teflon tape and the PE film are guided and transmitted to a material blocking plate by the steel roll, so as to perform material blocking treatment.
[0007] Specifically, the combined device of the Teflon tape and the PE film realizes full-tab coating and forms a blank area in a specific area of the pole piece by blocking the slurry from being coated on the pole piece.
[0008] Specifically, the combined device of the Teflon tape and the PE film is set to be able to accurately control the blank position and blank size of the pole piece.
[0009] Specifically, the Teflon tape and the PE film can be separated later.
[0010] Specifically, the Teflon tape and the PE film can be guided and discharged through the material blocking plate.
[0011] Specifically, the Teflon tape is located at the middle position of the PE film, and both sides of the PE film protrude 5 mm.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. Teflon tape, due to its high temperature resistance, corrosion resistance, and non - adhesion properties, is used as the main barrier layer of the coating. The PE film has good elasticity and plasticity, and can closely adhere to the Teflon tape, enhancing the barrier effect of the Teflon tape.
[0014] 1. Through the combined use of Teflon tape and PE film, precise control of the coating is achieved, effectively preventing coating overflow and uneven coating problems.
[0015] 2. The non - adhesion property of the Teflon tape and the elasticity and plasticity of the PE film endow the present invention with good durability and stability, enabling it to meet the requirements of different production environments.
[0016] 3. This process has a simple structure, convenient operation, and low cost, improving product quality and production efficiency.
[0017] 2. Through experiments, it is proved that using this process method effectively solves the following problems:
[0018] 1. The problem of carrying the material with the blank area in the middle of the PE film.
[0019] 2. The problem of powder falling off through friction in the blank area in the middle of the copper foil.
[0020] 3. The problem of uneven coating at the edge of the coating.
[0021] 3. Using this process can fully disperse the tension generated during the coating process, thereby achieving coating uniformity and stability.
[0022] Using this process can effectively solve the problems existing in the traditional material - blocking method, improving the coating effect and efficiency.
[0023] 4. During the transfer coating process of lithium - battery electrode sheets, a composite structure of Teflon and PE film is used as the material - blocking device. During the coating process, the Teflon and PE film are precisely fixed in the areas that need to be left blank, and the size and position of the blank can be precisely controlled. This technology not only improves the coating accuracy and uniformity, but also greatly improves the production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a combined diagram of the Teflon tape and PE film of the present utility model;
[0025] Figure 2 It is a coating production diagram of the present utility model.
[0026] In the figure: 1 - Teflon tape; 2 - PE film; 3 - material - blocking plate; 4 - steel roller; 5 - doctor blade roller. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0028] Please refer to Figure 1-2 , the present utility model provides a technical solution: a material blocking device for multiple coating areas of a transfer coater, including a Teflon tape 1 and a PE film 2, and the Teflon tape 1 and the PE film 2 are closely attached;
[0029] The Teflon tape 1 and the PE film 2 are guided and transmitted by a doctor roll 5, and a steel roll 4 is provided at the lower end of the doctor roll 5. Then, the Teflon tape 1 and the PE film 2 are guided and transmitted to a material blocking plate 3 through the steel roll 4, so as to perform material blocking treatment.
[0030] The combined device of the Teflon tape 1 and the PE film 2 realizes full pole ear coating and forms a blank space in a specific area of the pole piece by blocking the slurry from being coated on the pole piece. The combined device of the Teflon tape 1 and the PE film 2 is set to be able to accurately control the blank space position and size of the pole piece. The Teflon tape 1 and the PE film 2 can be separated later, and the Teflon tape 1 and the PE film 2 can be guided and discharged through the material blocking plate 3. The Teflon tape 1 is at the middle position of the PE film 2, and both sides of the PE film 2 protrude 5 mm.
[0031] Working principle: 1. Cut the Teflon tape and the PE film according to the dimensions and shapes required by the process (as Figure 1 shown);
[0032] 2. Closely attach the PE film under the Teflon tape to form a composite device, and both ends of the PE film extend 5 mm beyond the Teflon tape (as Figure 1 shown);
[0033] 3. Lift the doctor roll and place the composite device between the doctor roll and the steel roll, and then lower the doctor roll after completion;
[0034] 4. Fix the composite device on the coater according to the pole piece blank space position required by the process (one end is fixed on the doctor roll and the other end is fixed on the material trough material blocking plate). Make sure it is flat when fixing (as Figure 2 shown);
[0035] 5. When installing, the PE film is about 20 mm away from the lowest end of the doctor roll (as Figure 2 shown), and the work is completed.
[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A material blocking device for multiple coating areas of a transfer coater, characterized in that: It includes a Teflon tape (1) and a PE film (2), and the Teflon tape (1) and the PE film (2) are closely attached. The Teflon tape (1) and the PE film (2) are guided and transported by a doctor roll (5), and a steel roll (4) is provided at the lower end of the doctor roll (5). Then, the Teflon tape (1) and the PE film (2) are guided and transported to a baffle plate (3) through the steel roll (4) for baffle treatment.
2. The material blocking device for multiple coating areas of a transfer coater according to claim 1, characterized in that: The combined device of the Teflon tape (1) and the PE film (2) blocks the slurry from being coated on the electrode sheet, realizes full-tab coating, and forms a blank area in a specific area of the electrode sheet.
3. The material blocking device for multiple coating areas of a transfer coater according to claim 2, characterized in that: The combined device of the Teflon tape (1) and the PE film (2) is set to accurately control the blank position and blank size of the electrode sheet.
4. The material blocking device for multiple coating areas of a transfer coater according to claim 3, characterized in that: The Teflon tape (1) and the PE film (2) can be separated later.
5. The material blocking device for multiple coating areas of a transfer coater according to claim 4, characterized in that: The Teflon tape (1) and the PE film (2) can be discharged through the baffle plate (3).
6. The material blocking device for multiple coating areas of a transfer coater according to claim 5, characterized in that: The Teflon tape (1) is at the middle position of the PE film (2), and both sides of the PE film (2) protrude 5 mm.