Printing coating anilox roller using zigzag mesh and manufacturing method

Abstract

The present invention relates to a printing and coating anilox roller employing a zigzag mesh and a manufacturing method. The printing and coating anilox roller comprises a seamless steel tube and a thermally sprayed ceramic layer. The thermally sprayed ceramic layer is attached to the outer surface of the seamless steel tube and is engraved with zigzag mesh holes for carrying ink. Compared with existing technologies, this invention offers advantages such as improved coverage of coated printing ink and reduced pinhole formation.

Description

Technical Field

[0001] The present invention relates to an anilox roller, in particular to a printing and coating anilox roller using broken line mesh holes and a manufacturing method thereof. Background Art

[0002] The existing printing and coating anilox roller uses a diagonal mesh. Due to the limitations of the mesh shape and the open dots, the ink slurry tends to flow in one direction along the inclined lines of the diagonal mesh during printing, resulting in edge bursting (uneven thickness of the left and right printed coatings). In addition, the mesh wall is prone to falling off after cleaning, and scraper marks are easily produced on the roller surface, resulting in a short service life. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a printing coating anilox roller using a zigzag mesh and a manufacturing method.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] According to one aspect of the present invention, a printing coating anilox roller with a zigzag mesh is provided, comprising a roller seamless steel tube and a thermally sprayed ceramic layer, wherein the thermally sprayed ceramic layer is attached to the outer surface of the roller seamless steel tube, and the surface of the thermally sprayed ceramic layer is engraved with a mesh for loading ink, and the mesh is a zigzag mesh.

[0006] As a preferred technical solution, the zigzag mesh is formed by arranging a number of identical mesh walls, and each mesh wall is evenly arranged.

[0007] As a preferred technical solution, the bottoms of the concave holes between adjacent mesh walls are substantially flat and slightly trapezoidal.

[0008] As a preferred technical solution, the fold line angle of the mesh wall ranges from 1 to 180°, preferably 90°.

[0009] As a preferred technical solution, the width of the mesh wall is 5 microns to 4500 microns, the spacing between the mesh walls is 10 microns to 5000 microns, and the depth of the mesh is 10 microns to 500 microns.

[0010] As a preferred technical solution, the length between adjacent bends of each mesh wall is greater than or equal to the spacing between the mesh walls.

[0011] As a preferred technical solution, the anilox roller further includes a printing and coating anilox roller shaft head for fixing.

[0012] As a preferred technical solution, the printing and coating anilox roller shaft head is made of 45# round steel or stainless steel.

[0013] As a preferred technical solution, the roller body seamless steel pipe is a seamless steel pipe.

[0014] According to another aspect of the present invention, there is provided a method for manufacturing a printing coating anilox roller using a zigzag mesh, the method comprising the following steps:

[0015] (1) The printing and coating anilox roller shaft head is made of 45# round steel or stainless steel, and the roller body seamless steel tube is made of a roller base made of seamless steel tube. The roller base is inspected to ensure that there are no defects on the roller base and its surface;

[0016] (2) Degreasing and sandblasting of qualified inspection roller bases are carried out, with the sandblasting pressure being 4-6 MPa and 12-45# corundum sand being used for sandblasting;

[0017] (3) A Cr2O3 ceramic coating is sprayed on the surface of the roller substrate using a triple cathode plasma thermal spraying device, wherein the method for spraying the Cr2O3 coating on the surface of the roller substrate comprises the following steps:

[0018] When spraying Cr2O3 ceramic coating on the surface of roller substrate by triple cathode plasma thermal spraying, air and hydrogen H2 are used as combustion-supporting gas. The amount of hydrogen H2 added is 20-50 NLPM, the air pressure range is 5-7 MPa, the argon Ar pressure range is 4-7 MPa, the powder feeding rate range is 40-80 g / min, the workpiece spraying temperature is less than 120°C, the Cr2O3 coating thickness is 0.1-0.4 mm, and the surface linear speed of the roller substrate during spraying is 60-100 m / min. The method of spraying spherical particles with a powder particle size of 10-45 μm is also included to increase the adhesion and density of the coating, and the porosity is 1.5±0.5%;

[0019] (4) After spraying, the coating thickness is 0.1-0.5mm after grinding and polishing with a diamond grinding wheel, and the roughness of the Cr2O3 ceramic coating reaches Ra 0.2 microns or less;

[0020] (5) Using a fiber laser engraving machine to engrave a zigzag mesh of corresponding depth for loading ink on the Cr2O3 ceramic coating;

[0021] (6) The processed zigzag mesh printing and coating anilox roller is used for coating lithium battery diaphragms and other coating machines for coating and printing.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. Improve the coverage of coating printing ink and reduce pinhole phenomenon;

[0024] 2. Excellent ink fluidity helps keep the mesh clean during printing;

[0025] 3. Increase printing stability and reduce anilox roller scratches;

[0026] 4. Under the same conditions, it has longer wear resistance and service life than traditional oblique anilox roller;

[0027] 5. The mesh is easier to clean;

[0028] 6. Better solve the problems of mesh blocking, printing coating slurry, and scraper line during the brushing process;

[0029] 7. Prevent the left and right edges of the printed coating from bursting and the thickness of the coating from being uneven;

[0030] 8. The mesh wall will not fall off after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the mesh of the present invention.

[0033] Among them, 1 is the printing and coating anilox roller shaft head, 2 is the roller body seamless steel tube, 3 is the thermal sprayed ceramic layer, 4 is the mesh wall, 5 is the mesh opening, 6 is the width of the mesh wall, 7 is the length between adjacent bends of each mesh wall, 8 is the spacing between mesh walls, and 9 is the fold line angle of the mesh wall. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0035] like Figure 1 As shown, a printing and coating anilox roller using a zigzag mesh comprises a roller body seamless steel tube 2 and a thermally sprayed ceramic layer 3. The thermally sprayed ceramic layer 3 is attached to the outer surface of the roller body seamless steel tube 2. The thermally sprayed ceramic layer 3 is engraved with a mesh for carrying ink. The mesh is a zigzag mesh. The zigzag mesh is composed of a plurality of identical mesh walls 4 arranged evenly.

[0036] The mesh holes on the surface of the printing and coating anilox roller with the zigzag mesh are composed of a plurality of identical mesh walls arranged in an arrangement; the mesh walls on the surface of the printing and coating anilox roller with the zigzag mesh are arranged evenly;

[0037] The bottom of each mesh on the surface of the printing and coating anilox roller of the zigzag mesh is slightly trapezoidal and basically flat; the mesh on the surface of the printing and coating anilox roller of the zigzag mesh is composed of a number of identical mesh walls, the fold line angle 9 of which ranges from 1 to 180°; the mesh wall 4 between the mesh walls of the printing and coating anilox roller of the zigzag mesh is in the range of 5 microns to 4500 microns, and the mesh opening 5 spacing ranges from 10 microns to 5000 microns; the length 7 between adjacent bends of each mesh wall is greater than or equal to the spacing 8 between the mesh walls; the mesh on the surface of the printing and coating anilox roller of the zigzag mesh can be coated with slurry between two adjacent mesh walls. The mesh holes between the walls can form up and down convection; the mesh holes on the surface of the printing and coating anilox roller with the zigzag mesh prevent the printing and coating from bursting and uneven coating thickness on the left and right sides, while increasing the ink slurry transfer rate and service life and reducing the problem of scraper lines on the roller surface; the shaft head of the printing and coating anilox roller with the zigzag mesh is made of 45# round steel or stainless steel; the roller seamless steel tube 2 is made of seamless steel tube; the surface of the thermal sprayed ceramic layer 3 is provided with a mesh for loading ink, which is engraved with a fiber laser and has a corresponding depth, and the depth range is 10 microns-500 microns; the printing and coating anilox roller with the zigzag mesh is used for lithium battery diaphragm coating and other coating machine printing.

[0038] Therefore, the arrangement of the present invention improves the coverage of the coating printing ink and reduces the pinhole phenomenon; the excellent ink flow performance helps to keep the mesh clean during the printing process; increases the printing stability and reduces the scratching of the anilox roller;

[0039] Under the same conditions, it has longer wear resistance and service life than traditional oblique anilox roller; the mesh is easier to clean;

[0040] It can better solve the problem of blocking printing and coating slurry and scraper line during the brushing process; prevent the left and right edges of printing and coating and uneven thickness on both sides of the coating; the mesh wall will not fall off after cleaning.

[0041] The present invention discloses a method for manufacturing a printing coating anilox roller using a zigzag mesh, which is characterized by comprising the following steps:

[0042] (1) The roller base shaft head is made of 45# round steel or stainless steel, and the base material is made of seamless steel pipe. The roller base is inspected to ensure that there are no defects on the roller base and surface;

[0043] (2) Degrease and sandblast the qualified inspection roller base, the sandblasting pressure is 4-6MPa, and 12-45# corundum sand is used for sandblasting;

[0044] (3) Using Swiss triple cathode plasma thermal spraying equipment to spray Cr2O3 ceramic coating on the surface of the roller substrate, wherein the method of spraying Cr2O3 coating on the surface of the roller substrate includes the following steps:

[0045] a. For the TriplexPro-210 triple cathode plasma thermal spraying method of spraying Cr2O3 ceramic coating on the roller substrate surface, air and hydrogen H2 are used as the combustion-supporting gas. The hydrogen H2 addition amount is 20-50 NLPM, the air pressure range is 5-7 MPa, the argon Ar pressure range is 4-7 MPa, the powder feed rate range is 40-80 g / min, the workpiece spraying temperature is less than 120°C, the Cr2O3 ceramic coating thickness is 0.1-0.4 mm, the Cr2O3 ceramic coating hardness is HV1100-1350, and the surface linear speed of the roller substrate during spraying is 60-100 m / min. The method also includes spraying spherical particles with a powder particle size of 10-45 μm to increase the adhesion and density of the coating, and the porosity is 1.5±0.5%;

[0046] (4) After spraying, the coating thickness is 0.1-0.5mm after grinding and polishing with a diamond grinding wheel, and the surface roughness reaches Ra0.2 microns or less. Other dimensions such as roller surface diameter, length, shaft diameter, length, dynamic balance, etc. meet the requirements of the drawings;

[0047] (5) Use a fiber laser engraving machine to engrave a mesh of corresponding depth for loading ink on the surface of the roller, and the mesh adopts a broken line mesh;

[0048] (6) The processed zigzag mesh printing and coating anilox roller is used for coating lithium battery diaphragms and other coating machines for coating and printing.

[0049] Compared to existing technologies, the present invention's zigzag mesh engraving technology is distinguished by its optimized dot geometry. This technology also eliminates left and right edge cracking and uneven coating thickness during printing and coating, while increasing the coating slurry transfer rate and service life, reducing scraper line issues, and preventing mesh wall detachment after cleaning. This technology is particularly suitable for printing on lithium battery separator coaters and other coating machines.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A printing and coating anilox roller with a broken line mesh, characterized in that: The invention comprises a roller seamless steel tube (2) and a thermal sprayed ceramic layer (3), wherein the thermal sprayed ceramic layer (3) is attached to the outer surface of the roller seamless steel tube (2), and the surface of the thermal sprayed ceramic layer (3) is engraved with a mesh for carrying ink, wherein the mesh adopts a zigzag mesh, and the bottom of the concave hole between adjacent mesh walls (4) is basically flat and slightly trapezoidal, the width (6) of the mesh wall is 5 microns to 4500 microns, the spacing (8) between the mesh walls is 10 microns to 5000 microns, and the depth of the mesh is 10 microns to 500 microns, and the zigzag mesh is formed by arranging a plurality of identical mesh walls (4), and each mesh wall (4) is evenly arranged; A method for manufacturing a printing coating anilox roller using a zigzag mesh, the method comprising the following steps: (1) The printing and coating anilox roller head (1) is made of 45# round steel or stainless steel, and the roller body is made of seamless steel pipe (2) The roller base is made of seamless steel pipe, and the roller base is inspected to ensure that there are no defects on the roller base and its surface; (2) Degreasing and sandblasting of qualified inspection roller bases are carried out, with a sandblasting pressure of 4-6 MPa and 12-45# corundum sand used for sandblasting; (3) A Cr2O3 ceramic coating is sprayed on the surface of the roller substrate using a triple cathode plasma thermal spraying device, wherein the method for spraying the Cr2O3 coating on the surface of the roller substrate comprises the following steps: When spraying Cr2O3 ceramic coating on the roller substrate surface by triple cathode plasma thermal spraying, air and hydrogen H2 are used as the combustion-supporting gas. The hydrogen H2 addition amount is 20-50 NLPM, the air pressure range is 5-7MPa, the argon Ar pressure range is 4-7MPa, the powder feed rate range is 40-80g / min, the workpiece spraying temperature is less than 120℃, the Cr2O3 coating thickness is 0.1-0.4mm, and the surface linear speed of the roller substrate during spraying is 60-100m / min. Spherical particles with a powder particle size of 10-45μm are also sprayed to increase the adhesion and density of the coating, and the porosity is 1.5±0.5%; (4) After spraying, the Cr2O3 ceramic coating is polished with a diamond grinding wheel, and the roughness reaches Ra 0.2 microns or less; (5) Use a fiber laser engraving machine to engrave a zigzag mesh of corresponding depth on the Cr2O3 ceramic coating for loading ink.

2. The printing and coating anilox roller with a zigzag mesh according to claim 1, characterized in that: The fold line angle (9) of the mesh wall is in the range of 90°.

3. The printing and coating anilox roller with a zigzag mesh according to claim 1, characterized in that: The length (7) between adjacent bends of each mesh wall is greater than or equal to the spacing (8) between the mesh walls.

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