Laser gravure plate roller

Abstract

The utility model discloses a laser gravure plate roller which comprises a plate roller body, a copper plating layer is compounded on the plate roller body, a lattice point area is arranged on the outer surface of the copper plating layer, ink cells in regular shapes are distributed in the lattice point area, the cross section of each ink cell is in an umbrella shape, and hydrophobic plating layers are plated on the bottom of an umbrella cover of each umbrella-shaped ink cell and the outer surface of an umbrella rod. The cross section of each ink cell is umbrella-shaped, and the design of the shape has multiple advantages. The umbrella-shaped structure increases the space volume of the ink cell and can contain more ink, so that more sufficient ink supply is provided in the printing process. Meanwhile, the umbrella-shaped curved surface design is beneficial to flowing and uniform distribution of the printing ink, so that printed patterns are clearer and finer, and the flowing path of the printing ink is further optimized due to the fact that the concave flow guide channels are formed between the umbrella rods.

Description

Technical Field

[0001] The utility model relates to an intaglio printing plate cylinder, in particular to an intaglio printing plate cylinder in a laser intaglio printing press. Background Art

[0002] At present, the electronic engraved printing plates adopt V-shaped cells and diamond-shaped dot shapes, and there are some obvious deficiencies in this design in practical applications.

[0003] First of all, although there are through grooves in the dots, the ink transfer rate is still low. This may be due to the structural characteristics of the V-shaped cells, which cause the storage and release of ink in the cells to be not smooth enough. During the printing process, the efficiency of transferring ink from the printing plate to the substrate is not high, affecting the quality and color saturation of the printed matter. The low ink transfer rate may also lead to the need to increase the printing pressure or use more ink to achieve the expected printing effect, which not only increases the wear and energy consumption of the equipment, but also may damage the printing plate and the substrate.

[0004] Secondly, easy drying of the plate is also a serious problem. Due to the low ink transfer rate, the ink on the printing plate is easy to dry, especially in the case of high-speed printing or long-time printing. Plate drying will lead to a decline in printing quality, such as uneven ink color, dot loss, blurred lines, etc. To avoid plate drying, it may be necessary to frequently clean the printing plate or add dampening solution, but this will increase the production cost and operation complexity.

[0005] In addition, the V-shaped cells and diamond-shaped dot shapes may also have other problems, such as limited adaptability to different types of inks and difficulty in achieving fine printing effects. In today's market environment with increasingly high requirements for printing quality, these problems limit the application range and competitiveness of electronic engraved printing plates. Summary of the Invention

[0006] The utility model provides a laser intaglio printing plate cylinder to solve the above-mentioned existing technical problems.

[0007] The technical solution of the utility model is realized as follows:

[0008] A laser intaglio printing plate cylinder includes a plate cylinder body, a copper plating layer is compounded on the body, on the outer surface of the copper plating layer, there is a dot area, in the dot area, cells composed of regular shapes are distributed, the cross-section of the cells is in an umbrella shape, and the bottom of the umbrella surface of the umbrella-shaped cells and the outer surface of the umbrella rod are coated with a hydrophobic coating.

[0009] The drooping height of the bottom of the umbrella surface is flush with the umbrella edge.

[0010] The cross-section between the umbrella rods is in a U shape.

[0011] There is a sunken diversion channel between the umbrella rods.

[0012] The edge of the umbrella is provided with an eave for guiding flow.

[0013] The hydrophobic coating is a nanocrystalline surface.

[0014] Beneficial effects of the utility model:

[0015] The hydrophobic coating can reduce the adhesion of ink in the mesh. Since the ink usually has a certain viscosity, it is easy to stick to the surface of the traditional plate roller, resulting in poor ink transfer. The presence of the hydrophobic coating increases the contact angle between the ink and the mesh surface, making it easier for the ink to detach from the mesh, thereby improving the ink transfer efficiency;

[0016] The cross section of the mesh is umbrella-shaped, and this shape has many advantages. The umbrella-shaped structure increases the spatial volume of the mesh, which can accommodate more ink, thereby providing a more sufficient ink supply during the printing process. At the same time, the umbrella-shaped curved surface design is conducive to the flow and uniform distribution of ink, making the printed pattern clearer and more delicate. The concave guide channel is set between the umbrella poles to further optimize the flow path of the ink.

[0017] The guide channel can guide the ink to flow quickly and accurately to the area where printing is required, reducing the resistance and stagnation of the ink during the flow process. This design helps to improve the transfer efficiency of the ink, reduce the waste of ink during the printing process, and also improve the printing speed and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the dot area and dot part on the gravure printing roller of the utility model.

[0019] Figure 2 It is a partial cross-sectional view of the network point area of ​​the utility model.

[0020] In the figure: 1. main body; 2. mesh area; 3. mesh holes; 4. umbrella surface; 5. umbrella pole; 6. umbrella edge; 7. diversion channel; 8. side eaves. DETAILED DESCRIPTION

[0021] The utility model discloses a laser gravure printing plate roller, comprising a plate roller body, the body being compounded with a copper-plated layer, the outer surface of the copper-plated layer being provided with a dot area, the dot area being distributed with mesh cells of regular shapes, the cross section of the mesh cells being umbrella-shaped, the bottom of the umbrella surface and the outer surface of the umbrella rod being provided with a hydrophobic coating.

[0022] It mainly consists of a plate cylinder body, a copper plating layer, and a dot area with a special shape. The plate cylinder body serves as the basic support structure, and the copper plating layer covers the body, providing a stable attachment surface for the dot area. The dot area is the key part to achieve the printing function. The unique umbrella-shaped cell structure and various special design elements work together to improve the printing quality and efficiency. The cross-section of the cell is umbrella-shaped, and this shape design has many advantages. The umbrella-shaped structure increases the space volume of the cell, enabling it to hold more ink, thus providing a more sufficient ink supply during the printing process. At the same time, the curved surface design of the umbrella is conducive to the flow and uniform distribution of the ink, making the printed pattern clearer and more delicate.

[0023] The drooping height at the bottom of the umbrella surface is level with the umbrella edge. This design can ensure a more uniform distribution of the ink in the cell. When the ink fills the cell, since the bottom is level with the edge, the ink will not accumulate too much at the bottom but can be more evenly distributed throughout the cell space, thus being able to be more stably transferred to the substrate during printing;

[0024] The drooping height at the bottom of the said umbrella surface is level with the umbrella edge.

[0025] The cross-section between the umbrella rods is U-shaped.

[0026] The cross-section between the umbrella rods is U-shaped. This design provides an additional channel for the flow of the ink. The U-shaped cross-section can guide the ink to flow from one cell to another during the printing process, enhancing the fluidity and coherence of the ink. At the same time, the U-shaped structure also increases the connectivity between the cells, making the ink distribution in the entire dot area more balanced, which helps to improve the printing consistency

[0027] There is a sunken diversion channel between the said umbrella rods.

[0028] Setting a sunken diversion channel between the umbrella rods further optimizes the flow path of the ink. The diversion channel can guide the ink to flow quickly and accurately to the area where printing is required, reducing the resistance and stagnation of the ink during the flow process. This design helps to improve the ink transfer efficiency, reduce the ink waste during the printing process, and also can increase the printing speed and production efficiency

[0029] There is a diversion eaves at the edge of the said umbrella edge.

[0030] The diversion eaves at the edge of the umbrella edge play an important role in diversion. The eaves can guide the ink to flow out from the edge of the cell during the printing process, preventing the ink from accumulating or overflowing at the edge. The design of the eaves enables the ink to be transferred from the cell to the substrate more smoothly, improving the printing accuracy and quality. At the same time, the eaves can also prevent the ink from splashing during the printing process, keeping the printing environment clean

[0031] The hydrophobic coating layer is a nanocrystalline surface.

[0032] The hydrophobic coating layer can reduce the adhesion of the ink in the cells. Since the ink usually has a certain viscosity, it is prone to adhesion on the surface of the traditional plate cylinder, resulting in unsmooth ink transfer. The existence of the hydrophobic coating layer increases the contact angle between the ink and the cell surface, making it easier for the ink to detach from the cells, thus improving the ink transfer efficiency.

[0033] The hydrophobic coating layer makes the plate cylinder easier to clean. During the printing process, it is inevitable that some ink remains on the surface of the plate cylinder. Without the hydrophobic coating layer, it would be very difficult to clean this ink. However, the hydrophobic coating layer can make the ink easier to be rinsed off during the cleaning process, reducing the cleaning difficulty and time, and improving the service life of the plate cylinder and the printing quality.

Claims

1. A laser gravure printing plate roller, characterized in that: The invention comprises a plate roller body, which is compounded with a copper-plated layer. The outer surface of the copper-plated layer is provided with a dot area, and the dot area is provided with mesh cells of regular shapes. The cross section of the mesh cells is umbrella-shaped, and the bottom of the umbrella surface and the outer surface of the umbrella rod are provided with a hydrophobic coating.

2. A laser gravure printing plate roller according to claim 1, characterized in that: The drooping height of the bottom of the umbrella surface is level with the umbrella edge.

3. The laser gravure printing plate roller according to claim 1, characterized in that: The cross section between the umbrella poles is U-shaped.

4. The laser gravure printing plate roller according to claim 1, characterized in that: There is a concave guide channel between the umbrella poles.

5. The laser gravure printing plate roller according to claim 1, characterized in that: The edge of the umbrella is provided with an eave for guiding flow.

6. The laser gravure printing plate roller according to claim 1, characterized in that: The hydrophobic coating is a nanocrystalline surface.

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