Hidden light-transmitting cover plate

Abstract

The utility model discloses a hidden type light-transmitting cover plate which comprises a plastic panel, primer is sprayed on the top of the plastic panel, a shading paint layer, a light-transmitting paint layer and a bright paint layer are sequentially arranged on the top of the primer from bottom to top, and a light-transmitting area is arranged on the shading paint layer; and the shading paint layer, the light-transmitting paint layer and the bright paint layer are formed by spraying through a high-pressure mist spray gun. The hidden light-transmitting cover plate is manufactured through a series of surface treatment, paint spraying, baking, laser and other processes, the hidden light-transmitting cover plate is in an overall color in appearance, but a light-emitting area is hidden, light can penetrate through the light-emitting area on the front face as long as light is supplied to the back face, and the light-emitting area is not damaged. The light-transmitting window can be widely applied to various household appliances, digital products, automotive electronics and other products as display light-transmitting windows, and compared with the prior art, the manufacturing process of the light-transmitting window has the advantages that the cost is obviously reduced, the process is simple, and personnel manufacturing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hidden light-transmitting covers, and particularly relates to a hidden light-transmitting cover. Background Art

[0002] At present, the manufacturing process of the hidden light-transmitting covers used on electrical appliances or other machines is relatively costly compared to the products manufactured by IML (in-mold insert molding) or other processes, and the manufacturing process is also relatively complex. Therefore, this application proposes a hidden light-transmitting cover. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and a hidden light-transmitting cover is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A hidden light-transmitting cover includes a plastic panel. A primer is sprayed on the top of the plastic panel. A light-shielding paint layer, a light-transmitting paint layer, and a bright paint layer are sequentially arranged from bottom to top on the top of the primer. A light-transmitting area is provided on the light-shielding paint layer;

[0006] The light-shielding paint layer, the light-transmitting paint layer, and the bright paint layer are all sprayed by a high-pressure fog spray gun. The light-transmitting area is obtained by removing the light-shielding paint on the light-shielding paint layer through a laser process.

[0007] Preferably, the plastic panel is a material panel that has been polished and cleaned by a grinding machine.

[0008] Preferably, the air pressure of the high-pressure fog spray gun is 0.3 - 0.6 MPa, the paint spraying time is 30 - 150 S, and 2 - 8 rounds are required when spraying the paint layer.

[0009] Preferably, after spraying the light-shielding paint layer, the light-transmitting paint layer, and the bright paint layer, temperature control baking is required at a temperature of 70 - 100 °C for 30 min.

[0010] Preferably, the light emitted by the LED lamp can penetrate through the light-transmitting area to the area that needs to be bright.

[0011] Preferably, the primer is used to enhance the adhesion of the three paint layers on its top.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The hidden light-transmitting cover plate of the present utility model is made through a series of processes such as surface treatment, painting, baking, and laser. In terms of appearance, it has an overall color, but there are hidden light-emitting areas. As long as light is given from the back, it can penetrate to the light-emitting areas on the front. It can be widely used as a light-transmitting display window in various household appliances, digital products, automotive electronics and other products. Compared with the prior art, its manufacturing process has significantly reduced costs, and the process is simple, facilitating personnel to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is an exploded structural schematic diagram of a hidden light-transmitting cover plate proposed by the present utility model.

[0015] In the figure: 1, bright paint layer; 2, light-transmitting paint layer; 3, light-shielding paint layer; 4, plastic panel; 5, light-transmitting area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0017] Referring to Figure 1 , a hidden light-transmitting cover plate includes a plastic panel 4. The plastic panel 4 is a material panel that has been polished and cleaned by a grinding machine. A primer is sprayed on the top of the plastic panel 4. The primer is used to enhance the adhesion of the three paint layers on its top. On the top of the primer, a light-shielding paint layer 3, a light-transmitting paint layer 2, and a bright paint layer 1 are sequentially arranged from bottom to top. A light-transmitting area 5 is provided on the light-shielding paint layer 3;

[0018] The light-shielding paint layer 3, the light-transmitting paint layer 2, and the bright paint layer 1 are all sprayed by a high-pressure spray gun. The air pressure of the high-pressure spray gun is 0.3 - 0.6 MPa, the painting time is 30 - 150 s, and 2 - 8 rounds are required when spraying the paint layer. After spraying the light-shielding paint layer 3, the light-transmitting paint layer 2, and the bright paint layer 1, temperature-controlled baking at 70 - 100 °C for 30 min is required to ensure that the surface of the material is completely dry and avoid moisture affecting the quality of the paint layer. The light-transmitting paint of the light-transmitting paint layer 2 is composed of the following weight percentages: 50 - 80% resin, 20 - 60% pigment, 5 - 30% solvent, and 1 - 6% additive. The resin is composed of acrylic resin and polyester resin, which is used to provide the adhesion, hardness, and durability of the paint. The pigment is composed of carbon black and aniline black, which is used to give the paint a black appearance. The particle size of the pigment is 0.010 - 0.5 μm. The solvent is composed of alcohols, esters, and ketones, which is used to dissolve the resin and the pigment. The additive includes a leveling agent, a defoaming agent, a curing agent, and an adhesion promoter, which is used to improve the construction performance of the paint and the performance of the dried coating film. Compared with the conventional light-transmitting paint, the formula of this light-transmitting paint has different particle sizes of the resin and the pigment and different other ratios, and the light transmittance and light uniformity of the light transmission are better, and it looks more layered and three-dimensional in the visual sense;

[0019] Among them, by spraying the bright paint layer 1, the adhesion can be improved and the appearance can be made brighter;

[0020] The light-transmitting area 5 is obtained by removing the light-shielding paint on the light-shielding paint layer 3 through a laser process. The light emitted by the LED lamp can penetrate through the light-transmitting area 5 to the area that needs to be bright. The hidden light-transmitting cover plate of the present utility model is made through a series of processes such as surface treatment, painting, baking, and laser. It looks like a whole color in appearance, but there are hidden light-emitting areas. As long as light is given on the back, it can penetrate to the light-emitting area on the front. It can be widely used as a light-transmitting display window in various household appliances, digital products, automotive electronics and other products. Compared with the prior art, its manufacturing process has significantly reduced costs, and the process is simple, which is convenient for personnel to manufacture.

[0021] Working principle: When manufacturing the hidden light-transmitting cover plate, first prepare the plastic panel 4. Use a grinding machine with a rotation speed of 800 r / min to polish its surface, removing pollutants such as dust, oil stains, impurities, and rust on the surface of the plastic panel 4, and then wash it with water. After washing, bake it in an oven at 75 degrees for 20 minutes to ensure that the surface of the material is completely dry and avoid moisture affecting the quality of the paint layer. Immediately afterwards, use a high-pressure spray gun with a pressure of 0.3 - 0.6 MPa to spray a layer of primer on the top of the plastic panel 4 to enhance adhesion. The painting time is 30 - 100 S, and this is carried out for 2 - 3 rounds. After spraying the primer, place it in an oven at 70 - 100 °C and bake for 30 minutes to ensure that the surface of the material is completely dry. Then use a high-pressure spray gun with a pressure of 0.3 - 0.6 MPa to spray a layer of light-shielding paint layer 3 on the surface of the primer, making the plastic panel 4 of one color and able to block light. The painting time is 30 - 150 S, and this is carried out for 2 - 8 rounds. After spraying, also place it in an oven at 70 - 100 °C and bake for 30 minutes to ensure that the surface of the material is completely dry;

[0022] Immediately afterwards, use the laser process to remove the blocking paint in the light-transmitting area, obtaining two light-transmitting areas 5. The light-transmitting area 5 can allow the light emitted by the LED lamp to penetrate to the area that needs to be bright. After the paint is removed, wash it to remove dust, oil stains, and impurity pollutants on the surface of the material. After washing, place it in an oven at 75 degrees and bake for 20 minutes to ensure that the surface of the material is completely dry. After baking, use a high-pressure spray gun with a pressure of 0.3 - 0.6 MPa to spray a layer of light-transmitting paint layer 2 on the surface of the light-shielding paint layer 3, making the plastic panel 4 appear to be of one color without color difference in appearance. The painting time is the same as that for spraying the light-shielding paint layer 3, and after spraying, the same temperature is used for baking for the same time. After drying, immediately spray a layer of bright paint layer 1 in the same way to improve the overall adhesion and make the appearance brighter. After spraying, bake it in the same way. After baking is completed, the hidden light-transmitting cover plate can be obtained. The hidden light-transmitting cover plate made through a series of processes such as surface treatment, painting, baking, and laser appears to be of one color in appearance, but actually hides the light-emitting area. As long as light is given from the back, it can penetrate to the light-emitting area on the front, and it is applicable to various household appliances, digital products, automotive electronics and other products.

[0023] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A hidden light-transmitting cover plate, comprising a plastic panel (4), characterized in that: The top of the plastic panel (4) is sprayed with a primer, and the top of the primer is provided with a light-shielding paint layer (3), a light-transmitting paint layer (2) and a bright paint layer (1) in sequence from bottom to top, and a light-transmitting area (5) is provided on the light-shielding paint layer (3); The light-shielding paint layer (3), the light-transmitting paint layer (2) and the bright paint layer (1) are all sprayed by a high-pressure mist spray gun, and the light-transmitting area (5) is obtained by removing the light-shielding paint on the light-shielding paint layer (3) by a laser process.

2. A hidden light-transmitting cover according to claim 1, characterized in that: The plastic panel (4) is a material panel that has been polished and cleaned by a polishing machine.

3. The hidden light-transmitting cover plate according to claim 1, characterized in that: The air pressure of the high-pressure mist spray gun is 0.3-0.6MPa, the painting time is 30-150S, and 2-8 rounds are required when spraying the paint layer.

4. The hidden light-transmitting cover plate according to claim 1, characterized in that: After spraying the light-shielding paint layer (3), the light-transmitting paint layer (2) and the glossy paint layer (1), they need to be baked at a temperature of 70-100° C. for 30 minutes.

5. The hidden light-transmitting cover plate according to claim 1, characterized in that: The light-transmitting area (5) allows the light emitted by the LED lamp to be transmitted to the area where light is required.

6. The hidden light-transmitting cover plate according to claim 1, characterized in that: The primer is used to enhance the adhesion of the three paint layers on top of it.

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