Novel coating structure of black automobile sound screen

Abstract

The utility model belongs to the technical field of automobile surface coatings, and provides a novel coating structure of a black automobile sound screen, which comprises a sound screen body, a black layer is arranged on the front surface of the sound screen body, a mark area and a three-dimensional characteristic area are formed on the black layer, and an ink layer is arranged on the front surface of the mark area. The three-dimensional LOGO has the advantages that black electrophoresis or PVD is combined with the printing process, the defects in the prior art can be effectively overcome, black coating is replaced by black electrophoresis or PVD, laser etching is not needed, the tolerance of black film thickness uniformity is larger, the problem of paint accumulation in a three-dimensional LOGO groove is solved, meanwhile, compared with a 2C2B coating process, the production time is shortened, and the production efficiency is improved. Printing replaces laser coloring, the precision requirement of plane or three-dimensional LOGO color coverage can be met, the problems of laser carving marks and damage are avoided, and printing ink color matching is fast and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive surface coatings, and particularly relates to a novel coating structure for a black automotive speaker grille and a manufacturing method thereof. Background Art

[0002] With the growing demand of automotive users for in-vehicle audio-visual experience, the application demand for stainless steel speaker grilles has been increasing year by year due to their better sound quality and appearance texture. The mainstream colors of stainless steel speaker grilles are the metal original color and black. The original color usually does not require special surface coating treatment, while black usually adopts a painting process to form a black coating on the surface of the metal grille. The speaker grille usually has the logo of the audio, and this logo is mainly made by laser color printing. For the black speaker grille with a logo, the black coating on the surface of the grille is usually peeled off by laser engraving, and simultaneously, the thermal effect and oxidation on the surface of the stainless steel caused by the laser make the surface of the stainless steel produce different colors. The black stainless steel speaker grille with a logo is mainly prepared and realized by the black painting + laser color printing process. There are still the following problems and deficiencies in this technology: Black painting problems: The stainless steel painting process is complex and the production time is relatively long; for the speaker grille with a three-dimensional logo, there is a problem of paint accumulation in the logo groove structure. Laser color printing problems: The difference in the uniformity of the coating film thickness affects the uniformity of laser engraving, resulting in laser engraving marks in the laser area of the logo, affecting the appearance; there are many factors affecting the color in laser color printing and the color matching process is complex; for the speaker grille with a three-dimensional logo, the accuracy requirements for the color printing position are too high, and there are problems with damage to the R corner position and the side elevation of the logo convex platform, affecting the appearance. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a novel coating structure for a black automotive speaker grille and a manufacturing method thereof in view of the current situation of the prior art, which can not only avoid the appearance defect problems of laser color printing the logo on the existing painted black speaker grille, but also improve the production efficiency, reduce the manufacturing cost, meet the aesthetic requirements of automotive end-users for the speaker grille appearance, and also meet the requirements of the host factory for the part performance and cost reduction.

[0004] A novel coating structure for a black automotive speaker grille includes a speaker grille body, and is characterized in that a black layer is provided on the front surface of the speaker grille body, a logo area and a three-dimensional feature area are formed on the black layer, and an ink layer is provided on the front surface of the logo area.

[0005] In the above novel coating structure for a black automotive speaker grille, the black layer is a PVD coating, and the PVD coating is magnetron sputtered on the front surface of the speaker grille body, and the film thickness of the PVD coating is 0.5 - 2 μm.

[0006] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the PVD coating is one of chromium carbide, chromium carbonitride, or chromium nitride.

[0007] As another method, in the above-mentioned novel coating structure of a black automotive sound mesh cover, the black layer is a black electrophoretic paint film, which is formed on the front surface of the sound mesh cover body by electrophoresis, and the thickness of the black electrophoretic paint film layer is 10 - 30 μm.

[0008] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the black electrophoretic paint film is an acrylic resin coating system.

[0009] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the ink layer is a color layer. The ink layer forms a marked color by printing and transferring the ink layer to the marked area, and the film thickness of the ink layer is 5 - 15 μm.

[0010] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the sound mesh cover body has sound mesh holes, and the sound mesh holes are formed by etching through the sound mesh cover body.

[0011] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the three-dimensional feature area is formed by etching a part of the sound mesh cover body without penetrating it.

[0012] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the front surface of the sound mesh cover body has a sandblasted layer.

[0013] In the above-mentioned novel coating structure of a black automotive sound mesh cover, the sound mesh cover body is made of stainless steel material, and the wall thickness of the sound mesh cover body is 0.5 mm.

[0014] This patent also provides a novel coating structure for a black automotive sound mesh cover and its manufacturing method, which is characterized by including the following steps:

[0015] Step 1: Manufacturing the sound mesh cover body: A stainless steel plate with a wall thickness of 0.5 mm is formed into sound mesh holes (etched through) or three-dimensional feature areas (not etched through) with specific requirements through an etching process.

[0016] Step 2: Stamping and forming: The sound mesh cover body is formed into the required three-dimensional shape through a stamping process.

[0017] Step 3: Cleaning: The formed sound mesh cover body is cleaned by ultrasonic waves and baked dry to remove dirt such as dust and oil stains attached to the surface.

[0018] Step 4: Black surface treatment: A black layer is formed on the front surface of the sound mesh cover body through magnetron sputtering or electrophoresis.

[0019] Step 5: Printing of the ink layer: Prepare the required color ink in advance and produce the printing film. Transfer the ink to specific areas of the speaker grille body through the printing process to form the logo area of the required color, and then bake it at 150°C for at least 30 minutes to complete the curing of the ink into a film.

[0020] In the above-mentioned novel coating structure and manufacturing method of a black automotive speaker grille, add a sandblasting process between Step 1 and Step 2 or between Step 2 and Step 3, and make the surface of the speaker grille body present a sandblasted matte surface.

[0021] In the above-mentioned novel coating structure and manufacturing method of a black automotive speaker grille, the black surface treatment in Step 4 is to deposit multiple layers of black PVD coatings on the front surface of the speaker grille body through the PVD magnetron sputtering process. The PVD coating is one of chromium carbide, chromium carbonitride, or chromium nitride.

[0022] In the above-mentioned novel coating structure and manufacturing method of a black automotive speaker grille, the black surface treatment in Step 4 is to form a black electrophoretic paint film on the surface of the stainless steel speaker grille through the electrophoretic process.

[0023] Compared with the prior art, the advantages of the present utility model are realized by adopting the combination of black electrophoresis or PVD and printing processes, which can effectively avoid the deficiencies of the prior art. The black electrophoresis or PVD replaces the black coating. Since there is no need for laser engraving, the tolerance of the black film thickness uniformity is larger, and the problem of paint accumulation in the three-dimensional LOGO groove is avoided. At the same time, compared with the 2C2B coating process, the production time is shortened. The printing replaces the laser color printing, which can meet the accuracy requirements of color coverage for flat or three-dimensional LOGOs, avoid the problems of laser engraving marks and damage, and the ink color matching is fast and stable. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the novel coating structure of a black automotive speaker grille. Detailed Embodiments

[0025] The following are specific embodiments of the present utility model in combination with the drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0026] In the figure, speaker grille body 100; black layer 200; logo area 300; three-dimensional feature area 400; ink layer 500; speaker grille holes 600.

[0027] As Figure 1As shown in the figure, the novel coating structure of this black automotive speaker grille includes a speaker grille body 100. The speaker grille body 100 is made of stainless steel material with a wall thickness of about 0.5 mm, including but not limited to 304 and 316 stainless steel. There is a black layer 200 on the front surface of the speaker grille body 100. As a further optimization, one type of the black layer 200 is a PVD coating. The PVD coating is magnetron sputtered on the front surface of the speaker grille body 100. The film thickness of the PVD coating is 0.5 - 2 μm. The PVD coating is one of chromium carbide, chromium carbonitride, or chromium nitride. Or another type of the black layer 200 is a black electrophoretic paint film. The black electrophoretic paint film is formed on the front surface of the speaker grille body 100 through electrophoresis. The thickness of the black electrophoretic paint film layer is 10 - 30 μm, such as an acrylic resin coating system, etc. In this patent, by adopting the combination of black electrophoresis or PVD and printing process, the deficiencies of the prior art can be effectively avoided. Black electrophoresis or PVD replaces black painting. Since there is no need for laser engraving, the tolerance of the black film thickness uniformity is larger, and the problem of paint accumulation in the three-dimensional LOGO groove is avoided. A logo area 300 and a three-dimensional feature area 400 are formed on the black layer 200. There is an ink layer 500 on the front surface of the logo area 300. The ink layer 500 is a color layer. The ink layer 500 forms a logo color by printing and transferring the ink layer 500 to the logo area 300. The film thickness of the ink layer 500 is 5 - 15 μm. Here, the corresponding logo color can be adjusted according to different requirements. There are speaker holes 600 on the speaker grille body 100. The speaker holes 600 are formed by etching through the speaker grille body 100. The three-dimensional feature area 400 is formed by etching a part of the speaker grille body 100 without penetrating it. Through etching, specific three-dimensional features can be formed on the speaker grille body 100, making the appearance more beautiful. When the whole product needs a matte black effect, there is a sandblasted layer on the front surface of the speaker grille body 100, so that the speaker grille can present the required matte surface.

[0028] The present patent also provides a novel coating structure for a black automotive speaker grille and a manufacturing method thereof. The specific steps are as follows: Step 1, manufacturing the speaker grille body 100: using a stainless steel flat plate with a wall thickness of 0.5 mm, and through an etching process, forming speaker grille holes 600 (etched through) or three-dimensional feature areas 400 (not etched through) with specific requirements; Step 2, stamping: through a stamping process, forming the speaker grille body 100 into the required three-dimensional shape; Step 3, cleaning: ultrasonically cleaning and baking and drying the formed speaker grille body 100 to remove dirt such as dust and oil stains attached to the surface; Step 4, black surface treatment: forming a black layer 200 on the front surface of the speaker grille body 100 through magnetron sputtering or electrophoresis. When performing black surface treatment, it can be divided into two types. The first type of black surface treatment is depositing multiple layers of black PVD coatings on the front surface of the speaker grille body 100 through the PVD magnetron sputtering process, and the PVD coating is one of chromium carbide, chromium carbonitride, or chromium nitride; the second type of black surface treatment is forming a black electrophoretic paint film on the surface of the stainless steel grille through the electrophoresis process; Step 5, printing the ink layer 500: preparing the required color ink in advance and making a printing film, transferring the ink to a specific area of the speaker grille body 100 through a printing process to form a logo area 300 with the required color, and then baking at a high temperature of 150 °C for at least 30 minutes to complete the curing of the ink into a film. If a matte black effect is required, an additional sandblasting process is added between Step 1 and Step 2 or between Step 2 and Step 3, and the surface of the speaker grille body 100 is sandblasted to a matte surface.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications to the described specific embodiments or use similar methods for substitution, but will not deviate from the scope defined by the spirit of the present utility model.

Claims

1. A novel coating structure for a black automotive speaker grille, comprising a speaker grille body, characterized in that, The front surface of the described sound net cover body has a black layer, on which a logo area and a three-dimensional feature area are formed, and an ink layer is provided on the front surface of the logo area; the black layer is a PVD coating, the PVD coating is magnetron sputtered on the front surface of the sound net cover body, and the film thickness of the PVD coating is 0.5 - 2 μm; the PVD coating is one of chromium carbide, chromium carbonitride or chromium nitride; the ink layer is a color layer, and the ink layer forms a logo color by printing and transferring the ink layer to the logo area, and the film thickness of the ink layer is 5 - 15 μm.

2. The novel coating structure of a black automotive sound mesh cover according to claim 1, characterized in that The described sound net cover body has sound net holes, and the sound net holes are formed by etching through the sound net cover body; the three-dimensional feature area is formed by etching part of the sound net cover body without penetrating it.

3. A novel coating structure for a black automotive sound mesh cover according to claim 1, characterized in that, The front surface of the described sound net cover body has a sandblasted layer.

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