Process for processing pattern through laser paint stripping

Abstract

The invention discloses a process for processing patterns by laser paint stripping, which comprises the following steps of: preparing a workpiece: firstly, carrying out cleaning and surface treatment on the workpiece to be coated to ensure that the surface is clean and flat and has good adhesiveness, which can be realized by cleaning, deoiling, polishing and the like; designing patterns and figures, drawing the patterns and figures with recognition degrees by using two-dimensional and three-dimensional software, defining laser paint stripping areas, and obtaining different colors by dividing different areas and different stripping layer numbers; laser paint stripping is conducted, specifically, a coating in a designated area is stripped through laser in the designated area by adopting laser processing equipment, and the coating is made to show the color; and after laser paint stripping is completed, protective paint is sprayed on the surface to protect the primer coating, and the protective paint is transparent protective paint. According to the process, the coatings are stripped according to the defined area, countless combinations can be formed for the coatings with different colors, the laser stripping precision is high, and the boundary is clear.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing, in particular to a process for laser paint stripping processing patterns. Background Art

[0002] With the improvement of living standards, people have a higher aesthetic appreciation for the appearance of objects, and the demand for color diversity has increased accordingly. Users identify the excellent differences of products through unique patterns, shapes and colors. The usual spray painting is usually a single layer of monochrome. The logo is attached to the surface of the product. As time goes by and the time of use increases, the paint on the surface is easy to fall off, and the logo with certain marking is erased, and the product loses its original purpose of identification. Traditional technology is to use silk screen printing, transfer printing, masking, etc. to outline the pattern in multiple colors, which is prone to blurred boundaries, color overflow, misalignment and offset, etc. These situations will greatly reduce the generation efficiency and affect the accuracy of the processed pattern. Summary of the invention

[0003] The purpose of the present invention is to provide a process for laser paint stripping to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a process for laser paint stripping processing pattern, comprising the following steps:

[0005] S1. Spraying: Multi-color overlay painting is applied to the surface of the workpiece. The thickness of the spraying is precisely controlled at the micron level. Metal microparticles or other ingredients are added to the sprayed paint to achieve a special appearance effect on the paint surface. Before spraying, the workpiece needs to be cleaned and surface treated to ensure that the surface is clean, flat and has good adhesion. Cleaning is achieved through cleaning, degreasing, polishing, etc. After painting, the workpiece needs to be dried and cured to ensure the quality and adhesion of the coating.

[0006] S2. Pattern design: Use drawing software to draw recognizable patterns and define the areas for laser paint stripping. Different colors can be obtained by dividing different areas and peeling different layers.

[0007] S3. Laser paint stripping. Before laser paint stripping, make sure the workpiece surface is clean and dry so that the laser can effectively act on the coating surface. Use laser processing equipment to peel off the coating in the designated area through laser to make the coating show color. Laser paint stripping uses the high energy density and high temperature of the laser beam to instantly heat the coating surface, causing it to expand, deform or burn, thereby achieving the purpose of removing the coating.

[0008] S4. Apply protective paint. After laser paint stripping is completed, spray protective paint on the surface to protect the primer coating. Use transparent protective paint.

[0009] Compared with the prior art, the beneficial effect of the present invention is that after the workpiece is sprayed, the paint is stripped by a laser device according to the designed pattern. The accumulated coating layers with different colors can form countless combinations. Compared with traditional pattern printing technology, the accuracy and generation efficiency of the processed patterns are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the spraying structure of the present invention;

[0011] Figure 2 Design schematic examples for graphics;

[0012] Figure 3 This is an example of the pattern after paint peeling. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0014] The present invention provides a technical solution: a process for laser paint stripping and pattern processing, comprising the following steps:

[0015] S1. Spraying workpiece

[0016] Prepare the workpiece: First, the workpiece to be coated needs to be cleaned and surface treated to ensure that the surface is clean, flat and has good adhesion. This can be achieved by cleaning, degreasing, polishing, etc.

[0017] Prepare the paint: Select the paint and dilute, stir and adjust the viscosity as needed to ensure the paint is suitable for the spraying process.

[0018] Adjust spraying parameters: Set appropriate spraying parameters such as spraying pressure, spraying distance, spraying speed, spraying angle, etc. according to the requirements of the workpiece and the characteristics of the coating.

[0019] Spraying: Load the prepared paint into the spraying equipment, spray according to the preset parameters, spray the paint evenly on the surface of the workpiece through the spray gun, and use multiple layers of paint of different colors to spray. In order to improve the gloss and aesthetics of the paint surface, you can choose to add metal (mainly aluminum and copper) microparticles to the paint.

[0020] Drying and curing: After the paint is sprayed, it needs to be dried and cured to ensure the quality and adhesion of the coating. This can be achieved through natural drying, heating drying, ultraviolet curing, etc.

[0021] Check quality: Finally, the coating needs to be quality checked, including testing of coating thickness, appearance, adhesion, etc. to ensure that the coating meets the requirements.

[0022] S2. Graphic design

[0023] Determine design requirements: First, you need to clarify the purpose and requirements of the design, including the theme, style, purpose, etc. Determine the direction and requirements of the design based on the needs.

[0024] Creative conception: Creative conception is based on design requirements and themes. Designers can conceive design patterns through sketches and material collection.

[0025] Draw patterns: Use design software to draw and edit patterns. Designers can use drawing tools, coloring tools, layer management and other functions to create and modify pattern elements.

[0026] Adjust details: During the drawing process, designers need to pay attention to adjusting the details of the pattern, including color matching, pattern layout and other aspects to ensure the integrity and beauty of the pattern.

[0027] Improve the design: Modify and improve the design as needed to ensure that the pattern meets the design needs and requirements.

[0028] Output pattern: After completing the design, the designer can choose the appropriate file format and resolution for output, such as JPEG, PNG, PDF and other formats for subsequent application and sharing

[0029] S3, Laser paint stripping

[0030] Laser paint stripping uses the high energy density and high temperature of the laser beam to instantly heat the coating surface, causing it to expand, deform or burn, thereby achieving the purpose of removing the coating. The laser beam can be precisely controlled and can remove coatings in different positions and shapes as needed, by peeling off paint layers of different thicknesses to present corresponding colors, thereby forming a pattern.

[0031] Prepare the workpiece: First, place the workpiece to be processed on the workbench of the laser paint stripping equipment, and make sure the surface of the workpiece is clean and dry so that the laser can effectively act on the coating surface.

[0032] Set laser parameters: According to factors such as coating type, thickness and workpiece material, set appropriate laser parameters such as laser power, laser pulse frequency, laser beam diameter, etc. Different parameter settings will affect the effect and speed of laser paint stripping.

[0033] Laser paint stripping: Start the laser paint stripping equipment, irradiate the laser beam on the coating surface, and gradually remove the coating by controlling the movement and parameters of the laser beam. During the laser paint stripping process, the coating will be instantly heated, peeled off, and finally completely removed.

[0034] S4. Apply protective paint

[0035] Preparation: Before spraying varnish protection, you need to ensure that the surface of the object to be protected is clean and flat. If there is dust or other dirt, it needs to be cleaned and processed first.

[0036] Choose varnish: Choose the right varnish based on the material and purpose of the object. Varnish usually includes different gloss options, such as high gloss, semi-gloss or matte varnish, and you can choose the appropriate gloss level according to your needs.

[0037] Mixing varnish: Dilute or stir the selected varnish according to the proportions on the instructions to ensure that the texture and viscosity of the varnish paint are suitable for spraying operations.

[0038] Spraying operation: Use spraying equipment to evenly spray the prepared varnish on the surface of the object. When spraying, maintain a certain spraying distance and speed to ensure that the coating is even and smooth.

[0039] Drying and curing: After the varnish is sprayed, it needs to be dried and cured. Depending on the type and thickness of the varnish, you can choose natural drying or heating drying to ensure that the varnish coating is completely cured.

[0040] Check quality: Finally, the varnish coating needs to be quality checked, including testing of coating thickness, glossiness, flatness, etc., to ensure that the varnish coating quality meets the requirements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for laser paint stripping patterns, characterized in that: The steps include: S1. Spraying: spraying the workpiece surface with multiple colors, adding metal microparticles to the sprayed paint to increase the glossiness of the paint surface; S2. Pattern design: Use drawing software to draw recognizable patterns and define the areas for laser paint stripping. Different colors can be obtained by dividing different areas and peeling different layers. S3, laser paint stripping, using laser processing equipment to remove the coating in the designated area through laser to reveal the color; S4. Apply protective paint. After laser paint stripping is completed, spray protective paint on the surface to protect the primer coating. Use transparent protective paint.

2. The process for laser paint stripping patterns according to claim 1, characterized in that: In S1, the workpiece needs to be cleaned and surface treated before spraying to ensure that the surface is clean and flat so that the workpiece has good adhesion.

3. The process for laser paint stripping patterns according to claim 2, characterized in that: After painting, the workpiece in S1 needs to be dried and cured to ensure the quality and adhesion of the coating.

4. The process for laser paint stripping patterns according to claim 1, characterized in that: Laser paint stripping in S3 uses the high energy density and high temperature of the laser beam to instantly heat the coating surface, causing it to expand, deform or burn, thereby achieving the purpose of removing the coating.

5. The process for laser paint stripping patterns according to claim 4, characterized in that: Before laser paint stripping, make sure the workpiece surface is clean and dry so that the laser can effectively act on the coating surface.

Images