Coating roller and coating equipment

Abstract

The utility model provides a coating roller and coating equipment, and belongs to the technical field of coating, the whole body sleeving connection of an inner roller body of the coating roller is changed into the mode that the inner roller body is only sleeved in the middle section, and two sections are suspended, so that the two ends of the length of an improved outer roller body cannot be influenced by the deformation of the two ends of the length of the inner roller body, and the coating quality is improved. Therefore, the printing quality of the coating roller in high-precision printing is ensured.

Description

Technical Field

[0001] This application relates to the field of coating technology, and more specifically, to coating rollers and coating equipment. Background Technology

[0002] Traditional coating rollers consist of a central steel shaft encased in a steel tube, with a rubber roller then fitted over the tube. In high-precision coating applications, the central steel shaft may bend at both ends under gravity, causing the outer steel tube to deform as well. This deformation is then transmitted to the outer rubber roller, ultimately resulting in distortion of the printed pattern. Utility Model Content

[0003] This application provides a coating roller and coating equipment. By changing the entire inner roller body of the coating roller to be sleeved, but only sleeved in the middle section, with the two ends suspended, the improved outer roller body is no longer affected by the deformation of the inner roller body's ends, thus ensuring the printing quality of the coating roller in high-precision printing. Specifically:

[0004] The first aspect of this application provides a coating roller, including:

[0005] The outer roller body has an outer roller cavity formed inside, which opens at both ends of the outer roller body along its length. The outer roller cavity includes a first connecting cavity located in the middle position and a second connecting cavity located on both sides of the first connecting cavity along its length. The inner diameter of the first connecting cavity is A1, and the inner diameter of the second connecting cavity is A2. A1 is smaller than A2.

[0006] The inner roller body includes a sleeved section fitted into the outer roller cavity. The sleeved section includes a first sleeved section located in the middle position and a second sleeved section located on both sides of the length direction of the first sleeved section. The outer diameter of the first sleeved section is B1, and the outer diameter of the second sleeved section is B2. B1 is greater than B2.

[0007] The first connecting segment and the first connecting cavity are interference-fitted together, while the second connecting segment and the second connecting cavity are gap-fitted together to form a suspended cavity.

[0008] In the above technical solution, the length of the first socket segment is L1, and the length of the second socket segment is L2;

[0009] Where L1 < L2.

[0010] In the above technical solution, the socket segment also includes a transition segment between the first socket segment and the second socket segment;

[0011] The transition section is constructed as an inclined section that extends from the edge of the first socket section to the edge of the second socket section.

[0012] In the above technical solution, the length of the first socket segment is L1, the length of the second socket segment is L2, and the length of the transition segment is L3;

[0013] Where L3 < L1 < L2.

[0014] In the above technical solution, at least a portion of the second socket segment is configured as an inclined extension segment extending obliquely from the inner side near the first socket segment to the outer side away from the first socket segment, and the outer diameter of the inclined extension segment gradually decreases from the inner side near the first socket segment to the outer side away from the first socket segment.

[0015] In the above technical solution, the inner roller body also includes a shaft connecting section, which is located on the side of the second sleeve section away from the first sleeve section and outside the outer roller cavity.

[0016] In the above technical solution, the end opening of the suspended cavity is sealed with a sealing element.

[0017] In the above technical solution, the outer roller body is a hollow steel pipe;

[0018] and / or

[0019] The inner roller body is a solid steel shaft.

[0020] In the above technical solution, both the outer roller body and the inner roller body are made of metal.

[0021] The coating roller also includes a rubber roller fitted around the periphery of the metal outer roller.

[0022] The second aspect of this application provides a coating apparatus, which includes the coating roller provided in the first aspect of this application.

[0023] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0024] In this embodiment of the application, by changing the inner roller body of the coating roller to be sleeved throughout, but only sleeved in the middle section, while the two sections are suspended, the two ends of the improved outer roller body are no longer affected by the deformation of the two ends of the inner roller body, thereby ensuring the printing quality of the coating roller in high-precision printing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of the coating roller in the embodiments of this application;

[0026] Figure 2 This is a schematic cross-sectional view of the coating roller in the embodiments of this application. Figure 1 ;

[0027] Figure 3 This is a schematic cross-sectional view of the coating roller in the embodiments of this application. Figure 2 .

[0028] In the picture:

[0029] 10-Outer roller body; 101-Outer roller cavity; 1011-First connecting cavity; 1012-Second connecting cavity;

[0030] 20 - Inner roller body; 201 - Sleeve section; 2011 - First sleeve section; 2012 - Second sleeve section; 2013 - Transition section;

[0031] 30 - Suspended cavity;

[0032] 40 - Seals;

[0033] 50-Rubber roller. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] Throughout the specification and claims, the following terms will have at least the meaning explicitly associated herein, unless the context otherwise requires. The meanings defined below are not intended to limit the terms, but are merely illustrative examples.

[0036] In the description of this utility model, the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may refer to the same embodiment. Similarly, the phrase "in some embodiments" as used herein, when used multiple times, does not necessarily refer to the same embodiment, although it may refer to the same embodiment. As used herein, the term "or" is an inclusive "or" operator and is equivalent to the term "and / or" unless the context clearly specifies otherwise. The term "based on" is not exclusive and allows for reliance on additional factors not described, unless the context clearly specifies otherwise. The word "exemplary" herein means "serving as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments. The scope of this utility model is limited only by the scope of the appended claims, and any examples set forth in this specification are not intended to be limiting, but merely to illustrate some of the many possible embodiments of the claimed utility model. The various embodiments provided by this utility model should not be construed as limiting the scope of protection of this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are 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 are not intended to 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.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "socketing," "connecting," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] like Figures 1-3 As shown, the first aspect of this application provides a coating roller, comprising:

[0042] The outer roller body 10 has an outer roller cavity 101 formed inside the outer roller body 10 with openings at both ends in the length direction of the outer roller body 10. The outer roller cavity 101 includes a first socket cavity 1011 located in the middle position and a second socket cavity 1012 located on both sides in the length direction of the first socket cavity 1011. The inner diameter of the first socket cavity 1011 is A1 and the inner diameter of the second socket cavity 1012 is A2. A1 is smaller than A2.

[0043] The inner roller body 20 includes a sleeve section 201 sleeved in the outer roller cavity 101. The sleeve section 201 includes a first sleeve section 2011 located in the middle position and a second sleeve section 2012 located on both sides of the first sleeve section 2011 in the length direction. The outer diameter of the first sleeve section 2011 is B1 and the outer diameter of the second sleeve section 2012 is B2. B1 is greater than B2.

[0044] The first connecting section 2111 and the first connecting cavity 1011 are interference-fitted together, and the second connecting section 2012 and the second connecting cavity 1012 are clearance-fitted together to form a suspended cavity 30.

[0045] In this embodiment of the application, by changing the inner roller body 20 of the coating roller to be sleeved throughout, and only sleeved in the middle section while the two sections are suspended, the two ends of the improved outer roller body 10 will no longer be affected by the deformation of the two ends of the inner roller body 20, thereby ensuring the printing quality of the coating roller in high-precision printing.

[0046] It should be noted that in traditional applications, when both ends of the outer roller body 10 of the coating roller are affected and bent, the two ends of the coating roller will contact the printing surface first during printing. That is, the part where the printing quality is affected is the middle part of the coating roller. Of course, in some specific applications, when both ends of the outer roller body 10 of the coating roller are affected and bent, the middle part of the coating roller may contact the printing surface first during printing. That is, the part where the printing quality is affected may also be the two ends of the coating roller. However, regardless of the application scenario, the coating roller improved by this application can effectively solve the problem of printing quality being affected, thereby ensuring the printing quality of the coating roller in high-precision printing.

[0047] Specifically, the first connecting segment 2011 (outer diameter B1) and the first connecting cavity 1011 (inner diameter A1) are interference-fitted, ensuring a tight connection between the inner roller body 20 and the outer roller body 10 in the middle position, enhancing the overall stability of the structure. The second connecting segment 2012 (outer diameter B2) and the second connecting cavity (inner diameter A2) are clearance-fitted, allowing both ends to move freely to a certain extent, avoiding the problem of deformation of the outer roller body 10 due to deformation of the inner roller body 20 ends, thus ensuring the printing quality of the coating roller. Through this segmented connecting design, the coating roller can better maintain its shape and performance during high-precision coating, avoiding the problem of printed pattern deformation caused by steel shaft deformation in traditional structures, thereby meeting the needs of the high-precision coating field.

[0048] As described above, the first connecting segment 2111 and the first connecting cavity 1011 are interference-fitted together, meaning that the outer diameter B1 of the first connecting segment 2111 is greater than or equal to the inner diameter A1 of the first connecting cavity 1011. This design ensures a tight interference fit. When the outer diameter B1 is greater than the inner diameter A1, a certain amount of external force or heat treatment is required during assembly. After assembly, a large frictional force and contact pressure will be generated between the two, thereby enhancing the connection strength and stability between the inner roller body 20 and the outer roller body 10. If the outer diameter B1 is equal to the inner diameter A1, although a tight fit can theoretically be achieved, in actual assembly, due to factors such as machining errors, the fit may not be tight enough. Therefore, the preferred design, where the outer diameter B1 is greater than the inner diameter A1, can better compensate for machining errors and ensure the reliability of the interference fit.

[0049] Furthermore, in some possible implementations, the length of the first socket segment 2011 is L1, and the length of the second socket segment 2012 is L2.

[0050] Where L1 < L2, preferably, the length of L1 is 200mm to 250mm and the length of L2 is 1000mm to 15000mm.

[0051] It should be noted that the first connecting segment 2011 and the first connecting cavity 1011 adopt an interference fit. This type of fit requires a certain length to ensure the stability of the connection. By designing the length L1 of the first connecting segment 2011 to be shorter, the reliability of the interference fit can be guaranteed while reducing the assembly difficulty and processing cost caused by an excessively long interference fit section. The second connecting segment 2012 and the second connecting cavity 1012 adopt a clearance fit. This type of fit allows for a certain amount of movement to prevent the deformation at both ends of the inner roller body 20 from being transmitted to the outer roller body 10. By designing the length L2 of the second connecting segment 2012 to be longer, the suspension effect at both ends can be better achieved, reducing the impact of the deformation at both ends of the inner roller body 20 on the outer roller body 10, thereby improving the overall stability of the coating roller.

[0052] Furthermore, the shorter length L1 of the first connecting section 2011 means a relatively small contact area for the interference fit, but sufficient to provide adequate connection strength. This design ensures structural strength while avoiding localized stress concentration caused by an excessively long interference fit section. The longer length L2 of the second connecting section 2012, with its clearance fit design, allows the inner roller body 20 to move freely within a certain range, thus better distributing and transferring loads. This design effectively reduces structural deformation or damage caused by load concentration, improving the load-bearing capacity of the coating roller.

[0053] Furthermore, by designing the length L1 of the first connecting section 2011 to be shorter, the friction between the inner roller body 20 and the outer roller body 10 can be reduced, energy loss can be decreased, and the operating efficiency of the coating roller can be improved. On the other hand, the length L2 of the second connecting section 2012 is longer, and the clearance fit design can better adapt to the small deformations that may occur during the coating process, ensuring that the coating roller maintains stable performance during high-precision coating.

[0054] Furthermore, in some possible implementations, the socket segment 201 further includes a transition segment 2013 between the first socket segment 2011 and the second socket segment 2012;

[0055] The transition segment 2013 is constructed as an inclined segment extending from the edge of the first socket segment 2011 to the edge of the second socket segment 2012.

[0056] In this embodiment, the transition section 2013 is designed so that the connection between the first set section 2011 and the second set section 2012 is no longer a simple stepped connection, but a smooth transition through an inclined section. This smooth transition can effectively reduce stress concentration. In actual operation, the coating roller will bear various loads, including pressure and torque. If there is a significant step between the first set section 2011 and the second set section 2012, the load will cause stress concentration at the step, leading to structural fatigue and damage. The inclined transition section 2013 can disperse stress, making the load more evenly distributed on the inner roller body 20, thereby improving the reliability and service life of the coating roller.

[0057] Furthermore, during assembly, the inclined section acts as a "guide ramp," reducing friction and resistance, simplifying assembly, and improving efficiency. It also helps minimize damage to components during assembly. In addition, the transition section 2013 makes the inner roller body 20 more continuous and integrated. This design not only physically enhances the structural strength of the inner roller body 20 but also improves its resistance to deformation. Simultaneously, due to the presence of the transition section 2013, the inner roller body 20 can better resist bending and torsion caused by external loads during operation, thus maintaining the overall shape and performance of the coating roller and further improving coating quality. This design allows the coating roller to better adapt to outer roller bodies 10 with different specifications and precision requirements, improving the versatility and adaptability of the coating roller and reducing production costs.

[0058] Furthermore, in some possible implementations, the length of the first socket segment 2011 is L1, the length of the second socket segment 2012 is L2, and the length of the transition segment 2013 is L3.

[0059] Where L3 < L1 < L2.

[0060] In this embodiment, the transition section 2013 serves as the structure connecting the first connecting section 2011 and the second connecting section 2012. Its relatively short length L3 ensures that its primary function is smooth transition and stress dispersion, rather than bearing the main load transfer. This design allows the transition section 2013 to effectively reduce stress concentration without adding excessive material or weight, while maintaining structural compactness. The first connecting section 2011 uses an interference fit, requiring a sufficient length L1 to ensure the stability and reliability of the connection. Designing L1 to be greater than L3 but less than L2 ensures the strength of the interference fit while avoiding the increased assembly difficulty and processing costs associated with an excessively long interference fit section. The second connecting section 2012 uses a clearance fit, its main function being to provide sufficient movement space to reduce the impact of deformation at both ends of the inner roller 20 on the outer roller 10. A longer length L2 better achieves this function and also helps to disperse the load, improving the overall load-bearing capacity of the coating roller. This length relationship design allows the coating roller to maintain better stability during operation. The moderate length L1 of the first connecting section 2011 ensures the reliability of the interference fit, while the longer length L2 of the second connecting section 2012 provides sufficient clearance to avoid the influence of deformation at both ends of the inner roller body 20 on the outer roller body 10. The short length L3 of the transition section 2013 further optimizes the stress distribution and reduces the risk of structural damage caused by stress concentration.

[0061] Furthermore, in some possible embodiments, at least a portion of the second socket segment 2012 is configured as an inclined extension segment extending obliquely from the inner side near the first socket segment 2011 to the outer side away from the first socket segment 2011, and the outer diameter of the inclined extension segment gradually decreases from the inner side near the first socket segment to the outer side away from the first socket segment.

[0062] In this embodiment, the inclined extension of the second connecting segment 2012 causes its outer diameter to gradually decrease from the inner side near the first connecting segment 2011 to the outer side away from the first connecting segment 2011. This gradual structure effectively reduces stress concentration. In actual operation, the coating roller is subjected to various loads, including pressure and torque. If the outer diameter of the second connecting segment 2012 remains unchanged, the load will cause stress concentration at the connection point, leading to structural fatigue and damage. The gradual outer diameter design allows the load to be distributed more evenly on the second connecting segment 2012, thereby improving the reliability and service life of the coating roller. At the same time, this smooth transition structure enhances the integrity of the inner roller body 20, enabling it to better resist bending and torsion caused by external loads during operation, further improving the structural stability of the coating roller.

[0063] Furthermore, the inclined extension section design plays a guiding role in the assembly process, making it easier for the inner roller body 20 to be inserted into the outer roller cavity 101 of the outer roller body 10. This gradually changing outer diameter structure reduces friction and resistance during assembly, lowers assembly difficulty, and improves assembly efficiency, while also helping to reduce damage to components during assembly. The improved assembly precision not only ensures a more accurate clearance fit between the second connecting section 2012 and the second connecting cavity 1012, but also reduces structural loosening or deformation caused by assembly errors. During the coating process, the coating roller may experience dynamic deformation due to factors such as paint flow and equipment vibration. The inclined extension section design can effectively absorb and disperse these dynamic loads, reducing dynamic deformation. This design not only improves the dynamic stability of the coating roller, but also reduces local stress concentration caused by dynamic loads, avoiding coating quality problems caused by dynamic deformation, such as uneven coating and edge burrs, thereby significantly improving the dynamic performance and coating quality of the coating roller.

[0064] Furthermore, the inclined extension section design allows the second connecting section 2012 to better adapt to dimensional variations within the outer roller body 10, especially when there may be slight changes in the inner diameter of the second connecting cavity 1012. This design improves the versatility and adaptability of the coating roller, reducing production costs. Simultaneously, this gradient structure better adapts to coating processes with varying precision requirements, ensuring stable performance of the coating roller under various operating conditions. By optimizing the structure of the second connecting section 2012, unnecessary material usage is reduced, lowering production costs. This design not only optimizes the mechanical properties of the coating roller but also improves its dynamic performance and adaptability, ultimately enhancing the overall performance of the coating roller and enabling it to better meet the demands of high-precision coating processes.

[0065] Furthermore, in some possible embodiments, the inner roller body 20 also includes a shaft connecting section 202 with an outer diameter smaller than that of the sleeve section 201. The shaft connecting section 202 is disposed on the side of the second sleeve section 2012 away from the first sleeve section 2011 and is located outside the outer roller cavity 101.

[0066] In this embodiment, the outer diameter of the shaft connecting section 202 is smaller than that of the sleeve section 201. This design makes the shaft connecting section 202 structurally lighter while providing sufficient space for the sleeve section 201 to bear the main load. During the coating process, the fit between the sleeve section 201 and the outer roller body 10 needs to withstand significant pressure and torque, and the smaller outer diameter of the shaft connecting section 202 can prevent structural damage caused by excessive load concentration. The shaft connecting section 202 is located on the side of the second sleeve section 2012 away from the first sleeve section 2011 and is placed outside the outer roller cavity 101. This layout allows the load of the inner roller body 20 to be effectively distributed to the external drive device or other support structure through the shaft connecting section 202, thereby reducing the bending and torsion of the inner roller body 20 due to load concentration during operation and further improving the overall structural stability of the coating roller.

[0067] Furthermore, the smaller outer diameter of the shaft connection section 202 provides more flexible assembly space, allowing the coating roller to be more easily connected to external drive devices such as motor shafts or other mechanical components. This design reduces interference and friction during assembly, lowers assembly difficulty, and improves assembly efficiency. The outer diameter design of the shaft connection section 202 can better adapt to standard connecting components such as couplings and bearings, thereby improving the reliability and accuracy of the connection. By ensuring a tight fit between the shaft connection section 202 and external components, equipment failures caused by loose connections or failures can be reduced, extending the service life of the coating roller. During the coating process, the coating roller may be affected by dynamic loads, such as equipment vibration and paint flow. The smaller outer diameter of the shaft connection section 202 can effectively reduce the impact of these dynamic loads on the coating roller. Since the shaft connection section 202 is located outside the outer roller cavity 101, it can better absorb and disperse dynamic loads, reduce dynamic deformation, and thus improve the dynamic stability of the coating roller. The optimization of dynamic performance directly translates into improved coating quality. Reducing dynamic deformation can avoid problems such as uneven coating and edge burrs caused by coating roller vibration or instability, thereby ensuring high precision and high quality in the coating process.

[0068] Furthermore, in some possible implementations, the end opening of the suspended cavity is sealed with a sealing element 40.

[0069] In this embodiment, the suspended cavity 30 provides an internal space for the coating roller, while the annular seal 40 ensures the airtightness of this space. Preferably, the seal 40 is an annular rubber component. By placing the seal 40 at the opening of the suspended cavity 30, moisture, dust, and other contaminants can be effectively prevented from entering the interior of the suspended cavity 30. This sealing design significantly reduces corrosion and mechanical failures caused by internal contamination, thereby extending the service life of the coating roller. If lubricant is required during the operation of the coating roller, the seal 40 also prevents lubricant from leaking from the suspended cavity 30 to the outside. This not only helps maintain the lubrication effect of the coating roller but also reduces the potential contamination of the coating process by the lubricant, ensuring coating quality.

[0070] Furthermore, the sealed suspended cavity 30 reduces the impact of external environmental changes such as temperature and humidity on the internal structure of the coating roller. This design effectively reduces dynamic deformation caused by environmental changes, thereby improving the dynamic stability of the coating roller. A stable coating roller can better maintain the uniformity and consistency of the coating process, reducing quality problems such as uneven coating and edge burrs. By preventing contaminants from entering the suspended cavity 30, the fitting accuracy between the inner roller body 20 and the outer roller body 10 can be ensured to remain unaffected. This high-precision fit further improves the coating accuracy of the coating roller, meeting the requirements of high-precision coating processes.

[0071] Furthermore, in some possible embodiments, the outer roller body 10 is an internally hollow steel tube; and / or

[0072] The inner roller body 20 is a solid steel shaft.

[0073] The hollow steel tube design used in this embodiment of the application, which employs an outer roller body 10, significantly reduces its weight while ensuring sufficient strength and rigidity. This design helps reduce the overall weight of the coating roller, thereby reducing energy consumption and operating costs. Simultaneously, the hollow structure provides internal space for installing other components such as sensors and lubrication systems, further optimizing the coating roller's functionality. The solid steel shaft design ensures the inner roller body 20 has high strength and rigidity, capable of withstanding large loads and torques. This design is particularly suitable for high-precision coating processes, effectively reducing deformation of the inner roller body 20 during operation, thus improving the overall stability and reliability of the coating roller. The structural combination of a hollow steel tube outer roller body 10 and a solid steel shaft inner roller body 20 allows the coating roller to maintain lightweight while possessing sufficient strength and rigidity. This structural design effectively reduces deformation of the coating roller due to load changes or vibrations during operation, thereby improving the stability and reliability of the coating roller.

[0074] Furthermore, in some possible embodiments, both the outer roller body 10 and the inner roller body 20 are made of metal.

[0075] The coating roller also includes a rubber roller 50 sleeved around the outer periphery of the metal outer roller body 10.

[0076] In this embodiment, both the outer roller body 10 and the inner roller body 20 are made of metal. This design ensures that the coating roller has sufficient strength and rigidity to withstand the large pressure and torque generated during high-precision coating. The high strength and high wear resistance of the metal material enable the coating roller to operate stably for a long time under harsh working conditions, reducing equipment downtime due to structural damage. The rubber roller 50 is sleeved on the outer periphery of the outer roller body 10. The rubber material has good elasticity and cushioning properties, which can effectively absorb and disperse the impact and vibration generated during coating. This design not only protects the outer roller body 10 from direct mechanical damage but also improves the overall durability of the coating roller. At the same time, the flexibility of the rubber roller 50 ensures good contact between the coating roller and the coated material (such as paper, film, etc.). This good contact can reduce quality problems such as bubbles and streaks during coating, thereby improving the uniformity and consistency of coating. In other words, the outer roller body 10 provides stable support and precise dimensional control, while the rubber roller 50 provides flexibility and cushioning performance. This combination of metal and rubber design effectively reduces mechanical vibration and uneven contact during the coating process, further improving coating quality.

[0077] Furthermore, a second aspect of the present application also provides a coating apparatus, which includes the coating roller provided in the first aspect of the present application.

[0078] The coating setup in this embodiment significantly improves the stability and precision of the coating roller by employing various structural optimizations, such as socket section design, transition section, shaft connection section, and seals. These designs enable the coating roller to maintain stable performance during high-precision coating processes, reducing problems such as uneven coating and edge burrs. It better adapts to the requirements of high-precision coating processes, ensuring high-standard coating quality. This is crucial for producing high-quality coated products, such as electronic materials and high-end packaging materials.

[0079] In the above embodiments of this application, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. The steps illustrated in the related flowcharts can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown here. In other words, the order of steps described in the foregoing embodiments is merely an example. Reasonable adjustments to the order of steps based on the content of the embodiments of this application are also within the protection scope of the embodiments of this application.

[0080] The sequence numbers or order of description of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coating roller, characterized in that, include: An outer roller body (10) has an outer roller cavity (101) formed inside the outer roller body (10) with openings at both ends of the length direction of the outer roller body (10). The outer roller cavity (101) includes a first socket cavity (1011) located in the middle position and a second socket cavity (1012) located on both sides of the length direction of the first socket cavity (1011). The inner diameter of the first socket cavity (1011) is A1, and the inner diameter of the second socket cavity (1012) is A2. A1 is smaller than A2. The inner roller body (20) includes a sleeve section (201) sleeved in the outer roller cavity (101). The sleeve section (201) includes a first sleeve section (2011) located in the middle position and a second sleeve section (2012) located on both sides of the first sleeve section (2011) in the length direction. The outer diameter of the first sleeve section (2011) is B1, and the outer diameter of the second sleeve section (2012) is B2. B1 is greater than B2. The first socket segment (2011) and the first socket cavity (1011) are interference-fitted together, and the second socket segment (2012) and the second socket cavity (1012) are clearance-fitted together to form a suspended cavity (30).

2. The coating roller according to claim 1, characterized in that, The length of the first socket segment (2011) is L1, and the length of the second socket segment (2012) is L2; Where L1 < L2.

3. The coating roller according to claim 1, characterized in that, The socket segment (201) further includes a transition segment (2013) between the first socket segment (2011) and the second socket segment (2012); The transition segment (2013) is configured as an inclined segment extending obliquely from the edge of the first socket segment (2011) toward the edge of the second socket segment (2012).

4. The coating roller according to claim 3, characterized in that, The length of the first socket segment (2011) is L1, the length of the second socket segment (2012) is L2, and the length of the transition segment (2013) is L3; Where L3 < L1 < L2.

5. The coating roller according to claim 1, characterized in that, At least a portion of the second socket segment (2012) is configured as an inclined extension segment extending obliquely from the inner side of the first socket segment (2011) toward the outer side away from the first socket segment (2011), and the outer diameter of the inclined extension segment gradually decreases from the inner side of the first socket segment toward the outer side away from the first socket segment.

6. The coating roller according to claim 1, characterized in that, The inner roller body (20) also includes a shaft connecting section (202) with an outer diameter smaller than that of the sleeve section (201). The shaft connecting section (202) is disposed on the side of the second sleeve section (2012) away from the first sleeve section (2011) and is located outside the outer roller cavity (101).

7. The coating roller according to any one of claims 1-6, characterized in that, The end opening of the suspended cavity is sealed with a sealing element (40).

8. The coating roller according to any one of claims 1-6, characterized in that, The outer roller body (10) is a hollow steel pipe; and / or The inner roller body (20) is a solid steel shaft.

9. The coating roller according to any one of claims 1-6, characterized in that, Both the outer roller body (10) and the inner roller body (20) are made of metal. The coating roller also includes a rubber roller (50) sleeved around the outer periphery of the metal outer roller body (10).

10. Coating equipment, characterized in that, The coating roller included in any one of claims 1-9.

Images