A ceramic anilox roller suitable for high viscosity paste coating

Abstract

The utility model relates to a kind of ceramic anilox rolls suitable for high viscosity slurry coating, belong to coating equipment technical field, including roll body and ceramic layer, wherein: the roll body is equipped with the ceramic layer, multiple ink holes are equipped on the ceramic layer, the ink hole includes main cavity body and auxiliary cavity body, the auxiliary cavity body is arranged in the main cavity body, the inclination angle of the side wall and bottom surface of the main cavity body is less than the inclination angle of the side wall and bottom surface of the auxiliary cavity body, the caliber of the main cavity body decreases along the direction close to the roll body axis;The caliber of the auxiliary cavity body decreases along the direction close to the roll body axis.By being set main cavity body and auxiliary cavity body for ink hole, and the inclination angle of the side wall and bottom surface of main cavity body is less than the inclination angle of the side wall and bottom surface of auxiliary cavity body, change the flow pattern of slurry in the auxiliary cavity body of ink hole, auxiliary cavity body effectively destroys the adhesion of slurry and table module, so that slurry release is more thorough, transfer rate is improved.

Description

Technical Field

[0001] This utility model belongs to the field of coating equipment technology, and specifically relates to a ceramic anilox roller suitable for coating high-viscosity slurries. Background Technology

[0002] Ceramic anilox rollers are core metering components in modern precision coating equipment, widely used in lithium battery electrodes, thin film functional coatings, and other fields. They precisely carry and transfer a fixed amount of slurry through regularly arranged micro-cells on their surface. With technological advancements, the requirements for coating slurries are becoming increasingly stringent, especially in solid-state batteries and special ceramic coatings, where the slurries typically possess characteristics such as high viscosity (often less than 10,000 mPa·s), high solids content, and complex rheological properties. When using traditional anilox rollers with pyramidal, frustum-shaped, or bowl-shaped cells, problems such as low transfer rates, uneven coating density, and the formation of vertical streaks occur when coating high-viscosity slurries.

[0003] Therefore, in order to address the problems of low transfer rate, uneven coating density, and easy generation of vertical stripes when using existing anilox rollers to coat high-viscosity slurries, there is a need to provide a ceramic anilox roller suitable for coating high-viscosity slurries. Utility Model Content

[0004] This invention provides a ceramic anilox roller suitable for coating high-viscosity slurries, which solves the problems of low transfer rate, uneven coating density, and easy generation of vertical stripes that occur when using anilox rollers in the prior art to coat high-viscosity slurries.

[0005] This utility model is achieved through the following technical solution: a ceramic anilox roller suitable for coating high-viscosity slurries, comprising a roller body and a ceramic layer, wherein: The roller body is provided with a ceramic layer, and the ceramic layer is provided with a plurality of ink-receiving holes. Each ink-receiving hole includes a main hole and a secondary hole. The secondary hole is located in the main hole. The inclination angle between the side wall and the bottom surface of the main hole is smaller than the inclination angle between the side wall and the bottom surface of the secondary hole. The diameter of the main hole decreases along the direction close to the axis of the roller body; the diameter of the secondary hole decreases along the direction close to the axis of the roller body.

[0006] To better realize this utility model, the above structure is further optimized, and the plurality of ink-receiving holes are uniformly arranged on the ceramic layer.

[0007] To better realize this utility model, the above structure is further optimized by making the opening edge of the main cavity body chamfered.

[0008] To better realize this utility model, the above structure is further optimized by making the chamfer rounded.

[0009] To better realize this utility model, the above structure is further optimized by providing connecting rods at both ends of the roller body.

[0010] To better realize this utility model, the above structure is further optimized. The ink holes are evenly distributed along the circumference of the roller body and form axial hole groups. The number of axial hole groups is set to multiple, and all the axial hole groups are evenly distributed along the circumference on the roller body.

[0011] To better realize this utility model, the above structure is further optimized by setting the main acupoint and the secondary acupoint coaxially.

[0012] Compared with the prior art, this utility model has the following advantages: A ceramic anilox roller suitable for coating high-viscosity slurries includes a roller body and a ceramic layer, wherein: The roller body is provided with a ceramic layer, and the ceramic layer is provided with a plurality of ink-receiving holes. Each ink-receiving hole includes a main hole and a secondary hole. The secondary hole is located in the main hole. The inclination angle between the side wall and the bottom surface of the main hole is smaller than the inclination angle between the side wall and the bottom surface of the secondary hole. The diameter of the main hole decreases along the direction close to the axis of the roller body; the diameter of the secondary hole decreases along the direction close to the axis of the roller body.

[0013] The above structure, by setting the ink-receiving orifice as a main cavity and a secondary cavity, and with the inclination angle between the sidewall and bottom surface of the main cavity being smaller than that of the secondary cavity, changes the flow pattern of the slurry within the secondary cavity of the ink-receiving orifice. The secondary cavity effectively disrupts the adhesion between the slurry and the table module, resulting in more thorough slurry release and improved transfer rate. Because each ink-receiving orifice releases slurry consistently and thoroughly, it effectively avoids vertical streaks and surface density differences caused by uneven local residues, resulting in good coating surface consistency. Attached Figure Description

[0014] 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, 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.

[0015] Figure 1 This is a front view of the ceramic anilox roller suitable for coating high-viscosity slurries according to this utility model; Figure 2 This is a schematic diagram of the ink-receiving holes suitable for coating high-viscosity slurries in this utility model.

[0016] In the picture: 1-Roller body; 2-Ceramic layer; 3-Ink-absorbing hole; 4-Main cavity body; 5-Secondary cavity body; 6-Connecting rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Example 1: This application provides a ceramic anilox roller suitable for coating high-viscosity slurries, comprising a roller body 1 and a ceramic layer 2, wherein: The roller body 1 is provided with a ceramic layer 2, and the ceramic layer 2 is provided with a plurality of ink-receiving holes 3. The ink-receiving holes 3 include a main cavity 4 and a secondary cavity 5. The secondary cavity 5 is located inside the main cavity 4. The inclination angle between the side wall and the bottom surface of the main cavity 4 is smaller than the inclination angle between the side wall and the bottom surface of the secondary cavity 5. The diameter of the main cavity 4 decreases along the direction close to the axis of the roller body 1; the diameter of the secondary cavity 5 decreases along the direction close to the axis of the roller body 1.

[0021] In practical applications, the ceramic layer 2 can be understood as a functional material covering the surface of the roller 1, whose main function is to provide wear resistance and chemical stability. Specifically, the ceramic layer 2 can be formed by thermal spraying, plasma spraying, or chemical vapor deposition processes, such as alumina ceramic coatings or silicon carbide ceramic coatings. Its main purpose is to adapt to the harsh environment of high-viscosity slurries and avoid uneven coating due to wear.

[0022] Furthermore, the ink-receiving orifice 3 is designed to achieve uniform slurry carrying and release. The main cavity 4 serves as the primary slurry storage space, and its shape can be designed as a cone, pyramid, or other geometric structure with tapering characteristics to guide the slurry to flow towards the opening. The secondary cavity 5 serves as an auxiliary channel, and its shape can be designed as a cylinder, ellipse, or other geometric structure with a smooth transition to reduce shear resistance during slurry transfer. The nested structure of the main cavity 4 and secondary cavity 5 optimizes the slurry flow path and improves the continuity of slurry release.

[0023] Specifically, the inclination angle between the sidewall and bottom surface of the main cavity 4 is smaller than that of the secondary cavity 5. This provides a strong "push" for the slurry to flow upward and be released from the bottom of the mesh cavity, greatly reducing slurry residue at the bottom. In addition, the diameters of the main cavity 4 and the secondary cavity 5 decrease along the direction close to the axis of the roller body 1. This inward-curving design reduces internal dead corner residue and enhances the directional conveying capability of the slurry.

[0024] The innovation of this application lies in the optimization of the flow path of high-viscosity slurry through the design of a primary and secondary double-layer anilox roller structure. This solves the problems of low transfer rate, uneven coating density, and easy generation of vertical streaks that occur when traditional anilox rollers coat high-viscosity slurries. Therefore, the ceramic anilox roller proposed in this embodiment can better adapt to the characteristics of high-viscosity slurries, improving the uniformity and stability of coating.

[0025] The working principle of this application embodiment is as follows: A ceramic anilox roller suitable for coating high-viscosity slurries achieves efficient transfer and uniform coating of high-viscosity slurries through its specific structural design. Specifically, the ceramic anilox roller includes a roller body 1 and a ceramic layer 2, wherein the ceramic layer 2 is disposed on the surface of the roller body 1, providing the necessary hardness and chemical stability to withstand the harsh working environment of high-viscosity slurries. Multiple ink-receiving holes 3 are distributed on the ceramic layer 2, these ink-receiving holes 3 consisting of main cavities 4 and secondary cavities 5, which work together to optimize the flow path of the slurry.

[0026] Furthermore, the main cavity 4, serving as the primary slurry storage space, has a relatively small angle between its sidewalls and bottom surface, providing a gentle guiding surface that allows the high-viscosity slurry to migrate to the coating surface under lower shear stress. Simultaneously, the secondary cavity 5, nested within the main cavity 4, has a larger angle between its sidewalls and bottom surface, forming a steeper wall structure. This facilitates the rapid detachment of the slurry from the main cavity 4 during coating, reducing residue. This avoids slurry retention and the formation of vertical streaks.

[0027] Furthermore, the diameter of the main cavity 4 decreases along the direction close to the axis of the roller 1, forming an inwardly tapered structure. This design guides the slurry to flow towards the opening, reducing slurry residue in internal dead zones and improving transfer efficiency. Similarly, the diameter of the secondary cavity 5 also decreases along the direction close to the axis of the roller 1, forming a continuous tapering channel together with the main cavity 4, enhancing the directional transport capability of the slurry and ensuring the uniformity and stability of the coating surface density.

[0028] Therefore, through the above-mentioned design of the main and auxiliary double-layer mesh structure, the ceramic anilox roller can effectively improve the fluidity of high-viscosity slurry, solve the problems of low transfer rate, uneven coating density and easy generation of vertical stripes, and meet the needs of high-viscosity slurry coating process.

[0029] This application further proposes that multiple ink-absorbing holes 3 are uniformly arranged on the ceramic layer 2.

[0030] Specifically, the ink-receiving holes 3 refer to the tiny pore structure used for precisely carrying and transferring high-viscosity slurry. They can be implemented using regularly arranged cylindrical, conical, or other geometric shapes. In practical applications, the uniform distribution of the ink-receiving holes 3 can be ensured through precision machining techniques such as laser engraving or machining. The purpose is to ensure the uniform distribution of the slurry across the entire surface of the roller 1, thereby avoiding differences in coating surface density and the formation of vertical streaks.

[0031] In detail, by uniformly distributing multiple ink-receiving holes 3 on the ceramic layer 2, each ink-receiving hole 3 can function as an independent slurry carrying point, thereby providing the roller 1 with efficient slurry transfer capability. This uniform distribution design eliminates areas with excessively high or low slurry concentrations, ensuring the stability and consistency of the coating process. Furthermore, due to the special structural design of the main cavity 4 and the secondary cavity 5, combined with the uniform distribution of the ink-receiving holes 3, the transfer efficiency of high-viscosity slurries is further improved, and the generation of coating defects is effectively reduced. This design not only optimizes the function of individual ink-receiving holes 3 but also significantly improves the coating performance of the ceramic anilox roller through improvements in the overall layout.

[0032] In summary, the above solution solves the problem of uneven slurry distribution during the coating process by uniformly setting multiple ink-receiving holes 3, thereby achieving uniformity of coating surface density and reducing the generation of defects such as vertical stripes.

[0033] This application further proposes that the opening edge of the main cavity body 4 is chamfered.

[0034] Specifically, the chamfer refers to the bevel or smooth transition structure formed by removing the sharp part of the edge of the main cavity 4 opening, which can be achieved by machining, laser processing, or chemical etching. The purpose of introducing this feature is to reduce the frictional resistance and stress concentration of the slurry during contact and flow, thereby promoting smooth flow and uniform distribution of the slurry.

[0035] In detail, by setting the opening edge of the main cavity 4 to a chamfer, the scraping or unevenness of the slurry caused by sharp edges can be effectively avoided. Due to the chamfer, the resistance encountered by the slurry when entering and leaving the main cavity 4 is significantly reduced, which not only improves the transfer efficiency during the coating process but also reduces the generation of vertical streaks. Furthermore, this design, combined with the multiple ink-receiving holes 3 on the ceramic layer 2 and the structural form of the main cavity 4 and the secondary cavity 5, further optimizes the carrying and transfer performance of high-viscosity slurries. Through the above technical solutions, coating uniformity is significantly improved, while simultaneously solving the common vertical streak problem in the coating process of high-viscosity slurries.

[0036] This application further proposes that the chamfer be rounded.

[0037] Specifically, chamfering refers to the transition area formed by processing the edges of the four openings of the main cavity. Its purpose is to reduce stress concentration and prevent slurry residue. In practical applications, chamfering can be achieved through machining, laser processing, or chemical etching. Among these, rounded corners are a special type of chamfering. They provide a smooth edge transition through a rounded shape, which significantly reduces the risk of wear when the scraper contacts the edge compared to non-rounded corner designs, and effectively prevents slurry from accumulating at the edge.

[0038] In detail, setting the opening edge of the main cavity 4 to rounded corners enables a more uniform edge transition during coating. Due to the complex rheological properties of high-viscosity slurries, traditional non-rounded chamfers tend to result in sharp edges, which not only accelerates doctor blade wear but may also cause irregular slurry accumulation at the edges. With a rounded corner design, the slurry forms a more stable flow state as it passes through the opening of the main cavity 4, thereby improving transfer efficiency and coating uniformity. Furthermore, the combination of rounded corners and the main cavity 4 makes the entire ink-receiving hole structure 3 more uniformly distributed under stress, further extending the service life of the ceramic anilox roller.

[0039] Through the above technical solution, the structural design of the opening edge of the main cavity body 4 was optimized, and the problems of scraper wear and slurry accumulation caused by improper chamfer shape were solved. Ultimately, the transfer efficiency and coating quality were improved in the high viscosity slurry coating process.

[0040] This application further proposes the above-mentioned ceramic anilox roller, wherein the roller body 1 is provided with connecting rods 6 at both ends.

[0041] Specifically, the connecting rod 6 refers to the structural components located at both ends of the roller body 1. It can be cylindrical, square, or other shapes adapted to the external drive device. The main purpose of the connecting rod 6 is to provide symmetrical support points, thereby enhancing the fixation effect of the roller body 1 and reducing vibration and rotational unevenness. In addition, the connecting rod 6 can further improve its stability and vibration resistance by surface treatment or adding a buffer structure.

[0042] In detail, the connecting rods 6 at both ends of the roller body 1 securely connect the roller body 1 to the external drive device, ensuring the stability of the roller body 1 during the coating process. Since the connecting rods 6 provide symmetrical support, vibration problems caused by unstable installation can be effectively avoided. At the same time, this design can significantly improve the rotational uniformity of the roller body 1, thereby enhancing the consistency of the coating surface density. Based on this, the design of the connecting rods 6, the ceramic layer 2, and the ink-receiving holes 3 work together to enable the entire ceramic anilox roller to exhibit higher precision and reliability in high-viscosity slurry coating. Through the above technical solution, not only is the problem of unstable roller body 1 installation solved, but the overall coating quality is also improved, especially showing significant advantages in high-viscosity slurry applications.

[0043] This application further proposes that the ink holes 3 are evenly distributed along the circumference of the roller body 1 to form axial hole groups; the number of axial hole groups is set to multiple, and all axial hole groups are evenly distributed along the circumference on the roller body 1.

[0044] Specifically, the ink-receiving holes 3 refer to the tiny pore structure used to carry and transfer the slurry. This can be achieved using regularly arranged pore units, with the aim of ensuring uniform distribution of the slurry on the surface of the roller body 1. In practical applications, the axial hole group refers to the unit structure formed by arranging the ink-receiving holes 3 axially. The slurry transfer performance can be optimized by adjusting the hole spacing and arrangement, with the aim of improving coating uniformity and eliminating vertical streaks.

[0045] In detail, by uniformly distributing the ink-receiving holes 3 along the circumference of the roller body 1, the problem of localized slurry accumulation or missing parts can be effectively avoided, thereby preventing uneven circumferential coating. Furthermore, by forming axial hole groups and uniformly distributing multiple axial hole groups circumferentially, the overall uniformity of the slurry in both the axial and circumferential directions is further improved. This distribution method not only expands the slurry distribution range but also enhances the stable transfer capability of high-viscosity slurries. In addition, the coaxial arrangement of the main cavity 4 and the secondary cavity 5, combined with the aforementioned distribution of the ink-receiving holes 3, makes the slurry transfer process more stable, significantly improving the uniformity of the coating surface density and the coating quality.

[0046] In summary, the above technical solutions have solved the problems of uneven coating density and the generation of vertical streaks, achieving efficient and uniform coating of high-viscosity slurries.

[0047] This application further proposes that the main acupoint 4 and the secondary acupoint 5 be arranged coaxially.

[0048] Specifically, the coaxial arrangement of the main cavity 4 and the auxiliary cavity 5 means that they share the same central axis. In practical applications, this coaxial relationship can be achieved through precision machining techniques, such as using CNC machine tools for high-precision alignment machining, or using laser-assisted molding processes to ensure the consistency of the axis. The purpose is to optimize the flow path of the slurry within the ink-filling holes 3 and avoid turbulence or localized accumulation caused by axis misalignment.

[0049] In detail, with the main cavity 4 and the secondary cavity 5 coaxially arranged, the slurry can maintain a symmetrical and continuous flow state when transferring from the main cavity 4 to the secondary cavity 5. Since the angle between the sidewall and bottom surface of the main cavity 4 is smaller than that of the secondary cavity 5, this structural design, combined with the coaxial arrangement, can effectively guide the smooth transition of high-viscosity slurry, reducing flow resistance and the possibility of uneven distribution. Simultaneously, when the ink-coating holes 3 are evenly distributed circumferentially along the roller 1 to form axial hole groups, the coaxial arrangement further improves the consistency of coating uniformity among the hole groups, thereby significantly improving coating quality. Furthermore, the chamfered edge design of the main cavity 4 opening also works in conjunction with the coaxial arrangement to reduce slurry residue and clogging risks, improving transfer efficiency.

[0050] The beneficial effects of this utility model are: Extremely high transfer rate: The synergistic effect of the dual-stage inclined structure, especially the steep secondary cavity, effectively disrupts the adhesion between the slurry and the mesh wall, allowing for more thorough slurry release and increasing the transfer rate by more than 15%.

[0051] Excellent coating uniformity: Due to the consistent and thorough release of slurry in each cell, vertical streaks and surface density differences caused by uneven local residues are effectively avoided, resulting in good coating uniformity.

[0052] Strong anti-clogging performance: The smooth rounded edges and unobstructed slurry release path reduce the risk of slurry particles getting stuck, while also facilitating subsequent cleaning and maintenance.

[0053] Wide range of applications: This utility model is specially designed for high viscosity slurries, and also has excellent adaptability to medium and low viscosity slurries, and has good market promotion prospects.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A ceramic anilox roller suitable for coating high-viscosity slurries, characterized in that: Includes a roller body and a ceramic layer, wherein: The roller body is provided with a ceramic layer, and the ceramic layer is provided with a plurality of ink-receiving holes. Each ink-receiving hole includes a main hole and a secondary hole. The secondary hole is located in the main hole. The inclination angle between the side wall and the bottom surface of the main hole is smaller than the inclination angle between the side wall and the bottom surface of the secondary hole. The diameter of the main hole decreases along the direction close to the axis of the roller body. The diameter of the secondary hole decreases along the direction close to the axis of the roller body.

2. The ceramic anilox roller suitable for coating high-viscosity slurries according to claim 1, characterized in that: Multiple ink-receiving holes are evenly distributed on the ceramic layer.

3. A ceramic anilox roller suitable for coating high-viscosity slurries according to claim 1, characterized in that: The opening edge of the main cavity is chamfered.

4. A ceramic anilox roller suitable for coating high-viscosity slurries according to claim 3, characterized in that: The chamfer is a rounded corner.

5. A ceramic anilox roller suitable for coating high-viscosity slurries according to claim 1, characterized in that: The roller body is provided with connecting rods at both ends.

6. A ceramic anilox roller suitable for coating high-viscosity slurries according to claim 1, characterized in that: The ink-receiving holes are evenly distributed along the circumference of the roller body and form axial hole groups; the number of axial hole groups is set to multiple, and all the axial hole groups are evenly distributed along the circumference on the roller body.

7. A ceramic anilox roller suitable for coating high-viscosity slurries according to claim 1, characterized in that: The main acupoint and the auxiliary acupoint are arranged coaxially.

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