Ceramic coating roll with flow leveling sump structure
Patent Information
- Application Number
- CN202522629715.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-11
AI Technical Summary
The existing matrix-distributed circular ink troughs of ceramic coating rollers have problems with poor leveling and insufficient media uniformity during the coating process. Especially when the coating roller is rotating freely, the printing media does not flow smoothly between the ink troughs, resulting in local missing transfer layers and splashing.
The design incorporates a spiral ink trough belt and a built-in ink reservoir. The spiral ink trough belt features linearly and uniformly distributed circular ink troughs, with adjacent ink troughs connected by direct or indirect pathways. The design also incorporates a hexagonal ink reservoir combined with a retaining edge to achieve overall leveling and uniformity.
It significantly improves the overall leveling and uniformity of the coating roller, resulting in a uniform and complete transfer layer, eliminating ink splatter, and facilitating the formation on ceramic roller sleeves, thus extending service life.
Smart Images
Figure CN224926365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ceramic coating roller with a leveling ink groove structure, and belongs to the technical field of coating rollers. Background Technology
[0002] Coating rollers are the core components of the coating process. Their main function is to uniformly and quantitatively transfer coatings (such as adhesives, inks, coating liquids, etc.) to the surface of substrates (such as paper, films, metal foils, fabrics, etc.). They are widely used in many industrial fields such as printing, packaging, electronics, building materials, and new energy.
[0003] The coating roller surface is designed with a coating surface, which generally includes inclined stripes, wavy stripes, regular geometric ink grooves, etc. During use, a certain thickness is scraped evenly by a scraper before transfer printing. It is required that the coating is transferred to the substrate to form a uniform layer, and there should be no defects such as local gaps or excessive thickness in some areas.
[0004] The advantage of coating surfaces with slanted stripes and wavy stripes is that the printing medium flows faster, but the disadvantage is that the leveling uniformity is poor, resulting in poor printing uniformity. On the other hand, the coating surface with ink groove structure, which adopts the design of triangular, rectangular, and circular ink grooves, has better relative distribution uniformity, but the relative leveling between ink grooves is poor. Especially during the scraping operation of the squeegee on the roller surface, individual ink grooves will be squeezed, resulting in printing medium splashing and affecting the printing effect.
[0005] To overcome this defect, a connection between ink troughs is added during the coating surface design process to improve leveling, eliminate splattering, and enhance the coating effect. Coating rollers typically use metal or ceramic surfaces, forming the coating surface on a metal or ceramic layer. Metal processing is generally low-cost, usually achieved through continuous roll forming. Ceramic rollers can be laser-processed according to the coating surface design, offering higher forming precision and making them particularly suitable for coating transfer applications with thinner coating layers.
[0006] Currently, there exists a leveling ink groove structure formed on a ceramic surface, such as... Figure 5 As shown, the coated surface of the ceramic has several matrix-distributed circular ink grooves, which are not connected to each other. Traditional methods use... Figure 6 The design shown establishes a connection path between circular ink troughs, enabling the printing medium to flow level between them. While this design achieves a certain leveling performance, in practical applications, the flow of the printing medium between the circular ink troughs remains uneven under the free-rotating state of the coating roller. The uniformity of the medium stored in the circular ink troughs is poor, and regardless of whether the size of the circular ink troughs is increased or decreased, localized gaps in the transfer layer still exist. Utility Model Content
[0007] The purpose of this invention is to address the shortcomings of the prior art and to propose a ceramic coating roller with a leveling ink trough structure, which addresses the problem that traditional matrix-distributed circular ink troughs still cannot achieve uniform flow leveling even with traditional connecting paths.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A ceramic coating roller with a leveling ink trough structure includes a coating roller body, on which a ceramic roller sleeve is provided; The ceramic roller sleeve is provided with a coating roller surface, which includes a plurality of parallel and spaced spiral ink grooves. Each spiral ink groove has a projected straight line, and the projected straight line forms an angle of 15° to 60° with the axis of the coating roller body. The spiral ink groove belt is provided with a number of linearly uniformly distributed circular ink grooves, each of which contains a number of ink storage grooves. Any adjacent ink storage grooves have a direct or indirect connection path, and any adjacent circular ink grooves on the spiral ink groove belt are connected.
[0009] Preferably, the ink reservoir is a hexagonal ink reservoir with prism walls, and adjacent ink reservoirs share the prism walls.
[0010] Preferably, any of the ink storage tanks has a retaining edge, and the retaining edges of the plurality of ink storage tanks are arranged on the same side.
[0011] Preferably, any of the circular ink grooves includes at least two complete hexagonal ink grooves.
[0012] Preferably, any adjacent circular ink grooves on the spiral ink groove belt have overlapping portions, and the area of the circular ink groove is at least three times the area of the overlapping portions.
[0013] Preferably, the circular ink grooves on adjacent spiral ink groove belts are connected in a one-to-one correspondence.
[0014] Preferably, the circular ink grooves on adjacent spiral ink groove belts overlap to form an overlapping portion.
[0015] Preferably, the coating roller surface is a laser-engraved coating roller surface formed on the ceramic roller sleeve.
[0016] The beneficial effects of this utility model are mainly reflected in: 1. The use of a spiral ink trough belt achieves overall connectivity of the circular ink trough, while the built-in ink storage trough separates and connects the ink storage, resulting in better overall leveling uniformity, significant product transfer effect, and uniform and complete transfer layer.
[0017] 2. The design of combining hexagonal ink grooves with edge prisms makes the flow more uniform and smooth, and achieves flow guidance on the same side edge. During the scraper leveling operation, it can withstand pressure and level in real time, eliminating ink splatter.
[0018] 3. It is easy to form on ceramic roller sleeves. Combined with the deformation resistance of ceramic roller sleeves, the transfer quality is guaranteed, and the effective service life is relatively long. Attached Figure Description
[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a partially enlarged structural diagram of the ceramic coating roller with a leveling ink groove structure according to this utility model.
[0020] Figure 2 This is a schematic diagram of another embodiment of the ceramic coating roller with a leveling ink groove structure of this utility model.
[0021] Figure 3 This is a planar photograph of the coating roller surface laser-engraved in this utility model.
[0022] Figure 4 This is a three-dimensional photograph of the coating roller surface laser-engraved in this utility model.
[0023] Figure 5 This is a schematic diagram of a circular ink trough in the prior art.
[0024] Figure 6 This is a schematic diagram of interconnected circular ink grooves in existing technology. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.
[0027] This utility model provides a ceramic coating roller with a leveling ink groove structure, including a coating roller body 1 and a ceramic roller sleeve 2 provided on the coating roller body.
[0028] Specifically, traditional ink fountains generally use, for example... Figure 5 and Figure 6 The design typically has a size of around 0.1mm to 0.5mm, using a metal or ceramic layer to meet certain requirements for the uniformity of the transfer layer. However, due to the inherent defects in ink storage uniformity and leveling of the ink trough itself, when the transfer layer is thin, such as less than 0.2mm, it is difficult to meet the uniformity requirements during the leveling process. Even with more stringent process adjustments, local defects or excessively large positive and negative tolerances in thickness can still occur, affecting the product's pass rate.
[0029] In this case, if Figures 1 to 4 As shown, the ceramic roller sleeve 2 is provided with a coating roller surface 3. The coating roller surface 3 includes several parallel and spaced spiral ink grooves 4. Each spiral ink groove has a projected straight line 5. The projected straight line 5 forms an angle of 15° to 60° with the axis of the coating roller body 1.
[0030] Specifically, the projected line 5 is as follows: Figure 1 As shown, the spiral ink groove belt is a spiral structure on the coating roller body 1, as referenced. Figure 1 From this perspective, the spiral ink groove appears linear in the projection of this view. Through the design of an included angle of 15° to 60°, the printing medium will achieve leveling along the spiral ink groove during the transfer process due to the action of centrifugal force.
[0031] In this case, if Figures 1 to 4 As shown, the spiral ink groove belt 4 is provided with several linearly uniformly distributed circular ink grooves 6, and each circular ink groove 6 is provided with several ink storage grooves 7. Any adjacent ink storage grooves have direct or indirect connection paths, and any adjacent circular ink grooves on the spiral ink groove belt are connected.
[0032] Specifically, under normal circumstances, the scheme of connecting six linearly uniformly distributed circular ink troughs includes, for example: Figure 6 The existing technology connectivity schemes shown are Figure 3 The overlapping scheme in the middle.
[0033] In this case, whether the existing technology is used for connection or the superposition scheme of this case is adopted, its main function is to connect the circular ink grooves 6 on the spiral ink groove belt 4, so as to achieve flow leveling in the centrifugal spiral direction.
[0034] However, the contribution of this case compared to the prior art is that the spiral ink groove belt 4 achieves the connection and leveling of its own spiral direction. At the same time, the design of the ink storage groove 7 is adopted, and any adjacent ink storage grooves are connected.
[0035] Detailed implementation process and principle explanation: Traditional Figure 5 and Figure 6 In the roller surface, the circular ink trough 6 itself contains a large amount of printing media. Compared with the intervals 8 between the circular ink troughs 6, the intervals 8 have a blocking effect on the printing media. Specifically, the intervals 8 are the intermediate areas formed by the intersection of three or more circular ink troughs 6. Figure 1 It is the intersection area formed by four circular ink troughs 6. Figure 2 It is the intersection area formed by three circular ink troughs 6. During the leveling operation, the printing medium stored in the circular ink troughs 6 is difficult to be evenly coated, and there is a certain degree of stickiness after transfer, which causes problems such as poor leveling and uncontrollable thickness.
[0036] In this case, the design of the ink reservoir 7 enables regional storage and separation within the circular ink reservoir 6, while also ensuring flow within the circular ink reservoir 6. This results in a superior leveling effect, significantly improving coating uniformity and, in particular, virtually eliminating blank transfer, thus guaranteeing the integrity of the transfer layer.
[0037] It should be noted that the diameter of the circular ink trough 6 in this case is between 0.01mm and 0.2mm. The corresponding specifications can be selected according to the thickness of the transfer layer. The transfer qualification rate of rollers with different specifications for the corresponding thickness of the transfer layer is significantly improved.
[0038] In one specific embodiment, such as Figures 1 to 4 As shown, the ink reservoir 7 is a hexagonal ink reservoir with prism walls, and adjacent ink reservoirs share the same prism walls.
[0039] like Figure 1 and Figure 2 As shown, the hexagonal ink grooves are evenly spaced, and the grooves 71 on the edge walls can meet the flow requirements.
[0040] In one specific embodiment, such as Figures 1 to 4 As shown, any ink reservoir has a retaining edge 72, and the retaining edges of several ink reservoirs are arranged on the same side.
[0041] Reference Figure 1 , Figure 2 , Figure 3 As shown, the hexagonal ink groove has a geometric center point, and the so-called same-side setting means that the edge wall is located on the same side relative to the geometric center point.
[0042] Specifically, during the rotation process, the spiral ink reservoir 4 generates a spiral direction, thus generating a centrifugal force in the spiral direction on the fluid in the ink reservoir. This centrifugal force can meet the leveling requirements. Through the design of the baffle prism 72 on the same side, it can play the role of limiting and blocking the leveling. That is, when the fluid medium in the ink reservoir 7 is blocked by the baffle prism, it will be guided by the slot 71 to level. In this way, several ink reservoirs 7 can achieve rapid leveling after being blocked by a unified side, and the uniformity is guaranteed.
[0043] In one specific embodiment, any circular ink trough includes at least two complete hexagonal ink troughs.
[0044] It can achieve both connection and isolation between the circular ink trough 6 and the spacer 8, and also achieve connection and isolation between the hexagonal ink troughs within the circular ink trough 6, thus fulfilling certain requirements for fluid medium storage and leveling.
[0045] In one specific embodiment, any adjacent circular ink grooves on the spiral ink groove belt have overlapping portions, and the area of the circular ink grooves is at least three times the area of the overlapping portions.
[0046] This design satisfies the need for connectivity while also meeting the requirement to reduce the size of the 8-inch gap.
[0047] In one specific embodiment, such as Figure 3 and Figure 4 As shown, the circular ink grooves on adjacent spiral ink groove belts are connected one-to-one. The circular ink grooves on adjacent spiral ink groove belts overlap to form overlapping portions. This embodiment results in a more significant leveling effect.
[0048] It should be noted that in this solution, the coating roller surface is a laser-engraved coating roller surface formed on a ceramic roller sleeve. The structure of this laser-engraved coating roller surface is a macroscopic structure, formed using high-precision laser engraving equipment. During the laser engraving process, features such as... Figure 1 and Figure 2 The designed shape diagram is then used to create the texture pattern based on the shape structure. The final laser-engraved coating roller surface is as follows: Figure 3 and Figure 4 As shown, it displays the actual surface morphology of the formed product. This morphology is not the final morphology and requires further surface polishing to ultimately form the coating roller.
[0049] As described above, this invention utilizes a spiral ink trough belt to achieve overall connectivity of the circular ink trough, while simultaneously employing a built-in ink storage trough for ink storage separation and connection. This results in superior overall leveling uniformity, significant product transfer effect, and a uniform and complete transfer layer. The combination of a hexagonal ink trough and edge-blocking design ensures smoother and more uniform flow, while also enabling same-side edge-blocking. During scraping operations, the ink trough can withstand real-time pressure leveling, preventing ink splatter. It is easily molded on ceramic roller sleeves, and combined with the deformation-resistant properties of the ceramic roller sleeves, transfer quality is guaranteed, while also ensuring a long effective service life.
[0050] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.
[0051] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A ceramic coating roller with a leveling ink trough structure, comprising a coating roller body, wherein a ceramic roller sleeve is provided on the coating roller body, characterized in that: The ceramic roller sleeve is provided with a coating roller surface, which includes a plurality of parallel and spaced spiral ink grooves. Each spiral ink groove has a projected straight line, and the projected straight line forms an angle of 15° to 60° with the axis of the coating roller body. The spiral ink groove belt is provided with a number of linearly uniformly distributed circular ink grooves, each of which contains a number of ink storage grooves. Any adjacent ink storage grooves have a direct or indirect connection path, and any adjacent circular ink grooves on the spiral ink groove belt are connected.
2. The ceramic coating roller with a leveling ink trough structure according to claim 1, characterized in that: The ink reservoir is a hexagonal ink reservoir with prism walls, and adjacent ink reservoirs share the prism walls.
3. The ceramic coating roller with a leveling ink trough structure according to claim 2, characterized in that: Each of the ink storage tanks has a retaining edge wall, and the retaining edge walls of the plurality of ink storage tanks are arranged on the same side.
4. The ceramic coating roller with a leveling ink trough structure according to claim 2, characterized in that: Any of the circular ink troughs includes at least two complete hexagonal ink troughs.
5. The ceramic coating roller with a leveling ink trough structure according to claim 1, characterized in that: Any adjacent circular ink grooves on the spiral ink groove belt have overlapping portions, and the area of the circular ink grooves is at least three times the area of the overlapping portions.
6. The ceramic coating roller with a leveling ink trough structure according to claim 1, characterized in that: The circular ink grooves on adjacent spiral ink groove belts are connected in a one-to-one correspondence.
7. The ceramic coating roller with a leveling ink trough structure according to claim 6, characterized in that: The circular ink grooves on adjacent spiral ink groove belts overlap one-to-one to form an overlapping portion.
8. The ceramic coating roller with a leveling ink trough structure according to any one of claims 1 to 7, characterized in that: The coating roller surface is a laser-engraved coating roller surface formed on the ceramic roller sleeve.