Adjustable lower knife closed scraper structure

Abstract

The utility model relates to the field of scrapers, and discloses an adjustable lower scraper sealing scraper structure which comprises a material box cavity plate, a lower scraper fixing plate, an adjusting screw rod, an adjusting screw rod fixing plate, a lower scraper pressing plate, a lower scraper lining plate, a lower scraper, a micro concave roller, an upper scraper, an upper scraper pressing plate, an upper scraper lining plate and an upper scraper fixing plate. The material box cavity plate, the lower scraper fixing plate and the upper scraper fixing plate are provided with flowing channels, and a closed cavity is formed among the material box cavity plate, the lower scraper fixing plate, the lower scraper lining plate, the lower scraper, the micro-concave roller, the upper scraper, the upper scraper lining plate and the upper scraper fixing plate. The utility model has the following advantages and effects: the adjusting screw rod is adjusted by using a wrench, so that the lower scraper pressing plate, the lower scraper lining plate and the lower scraper are driven to integrally move downwards, at the moment, the closed cavity is changed into a semi-closed cavity, part of slurry and bubbles overflow from the lower scraper together, the bubbles in the cavity are reduced, and the coating quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of scraper technology, and in particular to an adjustable closed scraper structure. Background Technology

[0002] Microgravure coating using a closed doctor blade is the most common coating method for lithium battery separator ceramic coating.

[0003] Conventional closed scraper structure, such as Figure 1 As shown, it consists of a slurry inlet 1, a material box cavity plate 2, a lower scraper fixing plate 3, a lower scraper pressure plate 4, a lower scraper 5, a micro-concave roller 6, slurry 7, an upper scraper 8, an upper scraper pressure plate 9, an upper scraper fixing plate 10, an exhaust valve 11, and a slurry outlet 12.

[0004] The material box cavity plate, the lower scraper fixing plate and the upper scraper pressure plate are provided with slurry flow channels, and the micro-concave roller has laser-engraved cavities. The material box cavity plate, the lower scraper fixing plate, the lower scraper, the micro-concave roller, the upper scraper and the upper scraper fixing plate together form a closed cavity.

[0005] During operation, the coating slurry enters the closed cavity through the slurry inlet and fills the cells of the micro-concave roller, which rotates counterclockwise. As it passes the upper doctor blade, the areas on the micro-concave roller without cells are scraped clean, while the slurry within the cells remains. When this portion of the cells comes into contact with the diaphragm, the slurry's adhesion to the diaphragm is stronger than its adhesion to the cells, causing it to transfer to the diaphragm. However, the closed doctor blade cavity often contains a large number of air bubbles, creating positive pressure, which affects the coating effect and leads to defects such as missed coating.

[0006] Therefore, an adjustable closed scraper structure is needed to solve the above problems.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide an adjustable lower-blade closed scraper structure to solve the above-mentioned problems.

[0009] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adjustable lowering and closing scraper structure, comprising:

[0010] Material box cavity plate, lower scraper fixing plate, adjusting screw, adjusting screw fixing plate, lower scraper pressure plate, lower scraper liner, lower scraper, micro concave roller, upper scraper, upper scraper pressure plate, upper scraper liner and upper scraper fixing plate;

[0011] The material box cavity plate, the lower scraper fixing plate, and the upper scraper fixing plate are provided with flow channels, and a closed cavity is formed between the material box cavity plate, the lower scraper fixing plate, the lower scraper liner, the lower scraper, the micro-concave roller, the upper scraper, the upper scraper liner, and the upper scraper fixing plate.

[0012] A further feature of this invention is that the material box cavity plate is connected to a slurry inlet and a slurry outlet.

[0013] A further feature of this invention is that an exhaust valve is provided on the cavity plate of the material box.

[0014] By adopting the above technical solution, exhaust treatment can be facilitated.

[0015] A further feature of this invention is that slurry flows within the flow channel.

[0016] By adopting the above technical solution, the flow of slurry is facilitated.

[0017] A further feature of this invention is that the micro-concave roller is provided with a mesh for laser engraving.

[0018] A further feature of this invention is that the adjusting screw fixing plate is fixedly installed on the material box cavity plate, the adjusting screw is rotatably installed on the adjusting screw fixing plate, and the adjusting screw is threadedly connected to the lower scraper pressure plate.

[0019] By adopting the above technical solution, it is convenient to adjust the lower scraper pressure plate, lower scraper liner and lower scraper.

[0020] A further feature of this invention is that the lower scraper pressure plate is fixedly connected to the lower scraper liner, and the lower scraper liner is fixedly connected to the lower scraper.

[0021] The beneficial effects of this utility model are:

[0022] When there are many air bubbles in the closed cavity, the adjusting screw is adjusted with a wrench, which causes the lower scraper pressure plate, lower scraper liner and lower scraper to move down as a whole. At this time, the closed cavity becomes a semi-closed cavity, and some slurry and air bubbles overflow from the lower scraper, thereby reducing the air bubbles in the cavity and improving the coating quality. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1This is a schematic diagram of a closed scraper structure in the prior art.

[0025] Figure 2 This is a schematic diagram of an adjustable lower blade closed scraper structure proposed in this utility model.

[0026] In the diagram, 1. Slurry inlet; 2. Material box cavity plate; 3. Lower scraper fixing plate; 4. Adjusting screw; 5. Adjusting screw fixing plate; 6. Lower scraper pressure plate; 7. Lower scraper liner; 8. Lower scraper; 9. Micro-concave roller; 10. Slurry; 11. Upper scraper; 12. Upper scraper pressure plate; 13. Upper scraper liner; 14. Upper scraper fixing plate; 15. Exhaust valve; 16. Slurry outlet. Detailed Implementation

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0028] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] See Figure 1 and Figure 2 This utility model provides an adjustable lower blade closed scraper structure, comprising:

[0030] 2. Material box cavity plate, 3. Lower scraper fixing plate, 4. Adjusting screw, 5. Adjusting screw fixing plate, 6. Lower scraper pressure plate, 7. Lower scraper liner, 8. Lower scraper, 9. Micro-concave roller, 11. Upper scraper, 12. Upper scraper pressure plate, 13. Upper scraper liner and 14.

[0031] The material box cavity plate 2, the lower scraper fixing plate 3 and the upper scraper fixing plate 14 are provided with flow channels, and a closed cavity is formed between the material box cavity plate 2, the lower scraper fixing plate 3, the lower scraper liner 7, the lower scraper 8, the micro-concave roller 9, the upper scraper 11, the upper scraper liner 13 and the upper scraper fixing plate 14.

[0032] Specifically, the material box cavity plate 2 is connected to a slurry inlet 1 and a slurry outlet 16, which facilitates the addition and discharge of slurry.

[0033] Specifically, an exhaust valve 15 is provided on the material box cavity plate 2, which facilitates exhaust treatment.

[0034] Specifically, the micro-grooved roller 9 is provided with cavities for laser engraving, and slurry 10 flows in the flow channel. It should be noted that this facilitates the flow of slurry 10.

[0035] Specifically, the adjusting screw fixing plate 5 is fixedly installed on the material box cavity plate 2, the adjusting screw 4 is rotatably installed on the adjusting screw fixing plate 5, the adjusting screw 4 is threadedly connected to the lower scraper pressure plate 6, the lower scraper pressure plate 6 is fixedly connected to the lower scraper liner 7, and the lower scraper liner 7 is fixedly connected to the lower scraper 8. It should be noted that the adjusting screw 4 is adjusted with a wrench, thereby causing the lower scraper pressure plate 6, the lower scraper liner 7, and the lower scraper 8 to move downward as a whole. At this time, the closed cavity becomes a semi-closed cavity, and some slurry and air bubbles overflow from the lower scraper 8, thereby reducing air bubbles in the cavity and improving the coating quality.

[0036] Working principle:

[0037] The coating slurry 10 enters the closed cavity through the slurry inlet 1 and fills the mesh of the micro-grooved roller 9. The micro-grooved roller 9 rotates counterclockwise. When passing the upper scraper 11, the areas on the micro-grooved roller 9 without mesh are scraped clean, while the slurry 10 in the mesh remains in the mesh. When this part of the mesh comes into contact with the diaphragm, it is transferred to the diaphragm because the adhesion of the slurry to the diaphragm is stronger than the adhesion of the slurry to the mesh.

[0038] When there are many air bubbles in the closed cavity, use a wrench to adjust the adjusting screw 4, which will cause the lower scraper pressure plate 6, lower scraper liner 7 and lower scraper 8 to move down as a whole. At this time, the closed cavity becomes a semi-closed cavity, and some slurry and air bubbles overflow from the lower scraper 8, thereby reducing air bubbles in the cavity and improving the coating quality.

[0039] The above provides a detailed description of the adjustable lower blade sealing scraper structure provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An adjustable closed scraper structure, characterized in that, include: Material box cavity plate (2), lower scraper fixing plate (3), adjusting screw (4), adjusting screw fixing plate (5), lower scraper pressure plate (6), lower scraper liner (7), lower scraper (8), micro concave roller (9), upper scraper (11), upper scraper pressure plate (12), upper scraper liner (13) and upper scraper fixing plate (14); The material box cavity plate (2), the lower scraper fixing plate (3) and the upper scraper fixing plate (14) are provided with flow channels, and a closed cavity is formed between the material box cavity plate (2), the lower scraper fixing plate (3), the lower scraper liner (7), the lower scraper (8), the micro-concave roller (9), the upper scraper (11), the upper scraper liner (13) and the upper scraper fixing plate (14).

2. The adjustable lower blade sealing scraper structure according to claim 1, characterized in that, The material box cavity plate (2) is connected to a slurry inlet (1) and a slurry outlet (16).

3. The adjustable lower blade sealing scraper structure according to claim 1, characterized in that, An exhaust valve (15) is provided on the cavity plate (2) of the material box.

4. The adjustable lower blade sealing scraper structure according to claim 1, characterized in that, Slurry (10) flows within the flow channel.

5. The adjustable lower blade sealing scraper structure according to claim 1, characterized in that, The micro-concave roller (9) is provided with a mesh for laser engraving.

6. The adjustable lower blade sealing scraper structure according to claim 1, characterized in that, The adjusting screw fixing plate (5) is fixedly installed on the material box cavity plate (2), the adjusting screw (4) is rotatably installed on the adjusting screw fixing plate (5), and the adjusting screw (4) is threadedly connected to the lower scraper pressure plate (6).

7. The adjustable lower blade sealing scraper structure according to claim 1, characterized in that, The lower scraper pressure plate (6) is fixedly connected to the lower scraper liner (7), and the lower scraper liner (7) is fixedly connected to the lower scraper (8).

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