Curved cups produced by a mechanical-electronic engraving machine

Abstract

Curved cups produced by a mechanical-electronic engraving machine, comprising: a substrate (10) whose outer circumferential surface has a plurality of cups (11) engraved by a mechanical-electronic engraving machine which are formed along a predetermined path by means of a cutting tool when the substrate (10) is rotated and have a concave curved shape or a U-shape.

Description

Technical field

[0001] The invention relates to a cell structure of a printing roller, in particular the curved cells produced by a mechanical-electronic engraving machine, the cross-section of which has a symmetrical or asymmetrical curved shape or a U-shape to correspond to the different flow properties of the printing ink. State of the art

[0002] As in Fig. As shown in Figure 1, conventional gravure printing rollers are frequently used in various high-quality printing processes. They typically feature cells with a V-shaped bottom. This V-shaped bottom structure has the following disadvantages: First, the sharp corners of the V-shaped cells easily cause ink and water to accumulate on the cell bottoms, further impairing the movement and dispensing efficiency of the ink within the cells. Because the ink cannot easily flow from sharp corners, accumulation can occur, leading to incomplete ink transfer during printing. This results in blurring, blotches, or light edges in the printed pattern, thus compromising quality consistency.Furthermore, the sharp corners of the V-shaped structure increase the risk of localized wear on the roller during printing at high temperatures and speeds, thus shortening the roller's lifespan and reducing maintenance efficiency. Therefore, there is a need for improvement in conventional V-shaped cells with regard to color control, print detail, and production stability.

[0003] For this reason, the invention aims to eliminate the aforementioned shortcomings. The inventor developed this invention based on many years of experience in the relevant industry and years of meticulous research. Object of the invention

[0004] In light of the aforementioned shortcomings, the invention provides curved cups produced by a mechanical-electronic engraving machine, comprising: a substrate whose outer circumferential surface has a plurality of cups engraved along a predetermined path by a mechanical-electronic engraving machine using a cutting tool, and which have a concave curved shape or a U-shape. The base of each cup serves to receive a predetermined volume of printing ink, wherein the cross-section of the base of the cup is concave, arcuate, or semicircular, thereby facilitating a uniform flow of printing ink as the substrate is rotated during the printing process and reducing ink residue on the bases of the cups.

[0005] Preferably, the path of the cutting tool of the mechanical-electronic engraving machine contains several continuously varying paths, the rate of change of the paths being adjusted to control the ratio of the curvature and the depth of the indentations.

[0006] Preferably, the cells each have a predetermined distance from each other and form at least one character or at least one graphic.

[0007] Preferably, the side walls and the bottoms of the suppositories are connected by continuously curved surfaces.

[0008] Preferably, the cross-section of the cones has a symmetrical or asymmetrical curved shape or a U-shape to accommodate the different flow properties of the printing ink.

[0009] Preferably, the substrate is a metal roller, a non-metal roller or a metal-non-metal composite roller.

[0010] Preferably, the side walls and the bottoms of the suppositories are wholly or partially connected by continuously curved surfaces. Brief description of the drawings Fig. 1 a cross-sectional view of the V-shaped well of the conventional solution, Fig. 2 a perspective and enlarged representation of the substrate of the invention, Fig. 3 a sectional view of the cup of the invention, Fig. 4 a sectional view of the cup with another form of the invention, Fig. 5 a representation of the absorption of the printing ink by the cell of the invention, Fig. 6. A representation of the flow of the printing ink according to Fig. 5. Ways to implement the invention

[0011] To simplify the description of the present invention and its achievable effects, a specific embodiment is provided with accompanying drawings. The curved cells of the invention, produced by a mechanical-electronic engraving machine, comprise: As in Fig. Figure 2 shows a substrate 10, which can be a metal roller, a non-metal roller, or a metal-non-metal composite roller. The outer circumferential surface of the substrate 10 has a plurality of pits 11, each spaced at a predetermined distance from the others. The pits 11 form at least one character or at least one graphic.

[0012] The cones 11 are formed along a predetermined path by a mechanical-electronic engraving machine using a diamond cutting tool as the substrate 10 is rotated. The path of the cutting tool of the mechanical-electronic engraving machine contains several continuously varying paths, the rate of change of which is adjusted to control the relationship between the curvature and depth of the cones 11. The sidewalls and bottoms of the cones 11 are wholly or partially connected by continuously curved surfaces.

[0013] As in the Fig. As shown in Figures 3 to 6, the cones 11 each have a concave curved or U-shaped cross-section. The base of each cone 11 serves to hold a predetermined volume of printing ink 20. The cross-section of the base of the cone 11 is concave and arcuate (in Fig. 5 partially curved) or semicircular (in Fig.4 fully curved). This facilitates a uniform flow of printing ink when rotating the substrate 10 during the printing process and reduces ink residue on the bottoms of the cones 11, thus achieving a higher printing density.

[0014] In detail, the side walls and bases of the cones 11 are connected by continuously curved surfaces. The cross-section of the cones 11 has a symmetrical or asymmetrical curved shape or a U-shape to accommodate the different flow properties of the printing ink.

[0015] In this embodiment, the depth of the cones 11 is 25% to 50% of their maximum width. The radius of curvature of the cones 11 is in a range of approximately 0.02 mm to 0.50 mm, but is not limited to this range.

[0016] In summary, the curved or U-shaped suppositories 11 have the following advantages over the conventional V-shaped suppositories: 1. A U-shaped or curved base structure effectively reduces the accumulation of water and ink at the bottom of the stylus. The gently curved surface eliminates dead corners, allowing the ink to flow and be released more easily during printing, thus contributing to complete ink transfer. This structure reduces printing defects, ink smudges, and color variations caused by ink residue accumulation, thereby increasing the consistency and detail of printed materials. 2. U-shaped or curved prongs improve the uniformity of the ink distribution, so that the printing ink covers the printing substrate evenly and the final pattern becomes finer and more contrasting. 3. Because the color transfer rate is high, adjustments can be made quickly during the printing process, saving material and ink. 4. The predetermined volume of the printing ink 20 at the base of the suppository 11 of the invention is larger than that of the conventional V-shaped suppository. The capacity of the suppository is greater than that of the conventional V-shaped suppository.

[0017] Overall, the curved or U-shaped prongs significantly improve the print quality, efficiency and lifespan of the devices and represent an important advance in gravure printing technology.

[0018] The above detailed description is a specific description of one possible embodiment of the present invention. However, this embodiment is not intended to limit the scope of protection of the present invention. Any equivalent implementation or modification that does not deviate from the technical concept of the present invention should be included within the scope of protection of the invention. Reference symbol list 10 substrate 11 bowls 20 printing inks

Claims

[1] Curved cups produced by a mechanical-electronic engraving machine, comprising: a substrate (10) whose outer circumferential surface has a plurality of cups (11) engraved by a mechanical-electronic engraving machine which are formed along a predetermined path by means of a cutting tool when the substrate (10) is rotated and have a concave curved shape or a U-shape. [2] Curved cups produced by a mechanical-electronic engraving machine according to claim 1, characterized by , that the base of each cone (11) serves to receive a predetermined volume of printing ink (20), wherein the cross-section of the base of the cone (11) is concave, arcuate or semicircular, thereby facilitating a uniform flow of printing ink when rotating the substrate (10) in the printing process and reducing ink residues on the bases of the cones (11). [3] Curved cups produced by a mechanical-electronic engraving machine according to claim 2, characterized by , that the path of the cutting tool of the mechanical-electronic engraving machine contains several continuously varying paths, the rate of change of the paths being adjusted to control the ratio of the curvature and depth of the pegs (11). [4] Curved cups produced by a mechanical-electronic engraving machine according to claim 3, characterized by , that the cups (11) each have a predetermined distance from each other and form at least one character or at least one graphic. [5] Curved cups produced by a mechanical-electronic engraving machine according to claim 4, characterized by , that the side walls and the bottoms of the uvulae (11) are connected by continuously curved surfaces. [6] Curved cups produced by a mechanical-electronic engraving machine according to claim 1, characterized by, that the cross-section of the cones (11) has a symmetrical or asymmetrical curved shape or a U-shape to accommodate the different flow properties of the printing ink. [7] Curved cups produced by a mechanical-electronic engraving machine according to claim 1, characterized by , that the substrate (10) is a metal roller, a non-metal roller or a metal-non-metal composite roller. [8] Curved cups produced by a mechanical-electronic engraving machine according to claim 1, characterized by , that the side walls and the bottoms of the uvulae (11) are wholly or partially connected by continuously curved surfaces.

Images