High-temperature hydrogen flame treatment method for different-color mask of vehicle lamp and tail lamp

Abstract

The invention provides a high-temperature hydrogen flame treatment method for a different-color mask of a vehicle lamp and a tail lamp, which comprises the following steps of: carrying out movable spray baking on a color layer boundary along the transverse extension direction of the color layer boundary on the mask by using a hydrogen-oxygen flame gun; the oxyhydrogen flame gun which is rapid in temperature rise and extremely small in heat radiation range is used for treating the crack in the color layer boundary, so that only the part of the crack of the mask is heated and fused at high temperature, the crack is further filled, and the cracking problem at the color layer boundary is solved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle lamp mask processing, and in particular to a high-temperature hydrogen flame processing method for heterochromatic masks of vehicle lamps and taillights. Background Art

[0002] With the development of economy and the increasing development of transportation industry, cars are becoming more and more deeply involved in people's daily life. As an important functional part of the car, the car headlight combines the functions of vehicle lighting, warning and signal reminder, and cooperates with the body to form an important appearance feature of the whole vehicle. As one of the most important components in the car safety system, the car headlight plays a very important role in the safe driving of the vehicle. Therefore, the headlights in the existing technology often adopt a two-color or even three-color mask design to cope with the simultaneous use of multiple functional lights; However, after long-term use in hot and humid areas, existing two-color or even three-color headlight masks are prone to bursting cracks or even complete cracks at the boundaries between different color layers, causing water ingress, thereby affecting driving safety. Summary of the invention

[0003] In view of this, the problem to be solved by the present invention is to provide a high-temperature hydrogen flame treatment method for the heterochromatic masks of vehicle lights and taillights.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: The high-temperature hydrogen flame treatment method for the different-color masks of vehicle headlights and taillights utilizes a hydrogen-oxygen flame gun to spray the color layer boundary line on the mask in a moving manner along the lateral extension direction of the color layer boundary line.

[0005] The distance between the oxyhydrogen flame gun and the color layer boundary line is 2-3mm.

[0006] The angle between the oxyhydrogen flame gun and the mask is a flat angle.

[0007] The moving speed of the oxyhydrogen flame gun relative to the mask is 45-65 mm / s.

[0008] The nozzle diameter of the oxyhydrogen flame gun is 0.8 mm.

[0009] The gas pressure of the oxyhydrogen flame gun is 60-70 mbar.

[0010] The advantages and positive effects of the present invention are: Use a hydrogen-oxygen flame gun with rapid heating and extremely small heat radiation range to treat the cracks on the color layer boundary line, so that only the cracked part of the mask is heated and fused at high temperature, thereby filling the cracks and solving the cracking problem at the color layer boundary line. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0012] In the attached picture: Figure 1 It is a structural diagram of the oxyhydrogen flame gun and the two-color mask; In the figure: oxyhydrogen flame gun 1, nozzle 11, mask 2, color layer boundary line 21. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0016] The present invention has found through research that after the existing two-color or three-color headlight mask 2 is used for a long time in a hot and humid area, the color layer boundary 21 of different color layers is prone to bursting cracks or even complete cracks, causing water ingress due to: The raw material generally used for the headlight mask 2 is PMMA (polymethyl methacrylate). When making the headlight mask of a two-color or three-color headlight, two or three injection moldings are required. This results in a very small non-enclosed area, i.e., a crack, at the outermost junction of the first injection molded mask and the later injection molded mask. The width of the crack is generally only about 0.2 mm. Therefore, in a non-high temperature and high humidity environment, a large amount of water vapor will not continue to invade and will not be accompanied by high temperature, and there will be no problem of crack expansion; however, if it is in a high temperature and humid environment for a long time, a large amount of water vapor will continue to invade the crack accompanied by high temperature, which will easily cause the crack to expand, resulting in explosive cracks or even complete cracks, causing water ingress.

[0017] In view of the above problems, the present invention uses a hydrogen-oxygen flame gun 1 with rapid heating and extremely small heat radiation range to treat the cracks on the color layer boundary line 21, so that only the part of the mask where the cracks are generated is heated at high temperature, and the cracked part is fused without affecting other normal parts, thereby solving the problem of delamination and cracking. Specifically, the present invention provides a high-temperature hydrogen flame treatment method for the different-color masks of vehicle lights and taillights, wherein a hydrogen-oxygen flame gun 1 is used to spray the color layer boundary line 21 on the mask 2 along the lateral extension direction thereof, until the entire mask 2 is surrounded, and then all areas with cracks in the color layer boundary line 21 are heated at high temperature, so that the parts of the color layer boundary line 21 where the cracks are generated are fused after high-temperature heating, and then the gaps are filled, so that the gaps on the color layer boundary line 21 completely disappear, so that even if it is in a high-temperature and humid environment for a long time, there will be no problem of explosive cracks or even complete cracks; On the other hand, the heat radiation generated by high-temperature spraying can also perform local annealing treatment on the color layer boundary line 21, thereby reducing the bright line effect at the color layer boundary line 21 when the light source illuminates the mask 2.

[0018] Specifically, the distance between the oxyhydrogen flame gun 1 and the color layer boundary line 21 is 2-3 mm; the angle between the oxyhydrogen flame gun 1 and the mask 2 is a right angle; the moving speed of the oxyhydrogen flame gun 1 relative to the mask 2 is 45-65 mm / s; the diameter of the nozzle 11 of the oxyhydrogen flame gun 1 is 0.8 mm; and the gas pressure of the oxyhydrogen flame gun 1 is 60-70 mbar.

[0019] Furthermore, in this application, a simulation experiment was conducted on the mask 2 processed by the high-temperature hydrogen flame treatment method in an extreme temperature and humidity environment, and the experimental results are shown in the following table;

[0020] Table 1 As can be seen from the above table, this simulation not only conducted experiments in high temperature and humid environments, but also conducted experiments in ultra-high temperature and ultra-low temperature environments with relative temperatures of 95°C and -30°C. During the entire experimental process, there were no explosive cracks or even complete cracks on the surface of the mask 2.

[0021] The working principle and working process of the present invention are as follows: A hydrogen-oxygen flame gun 1 with a rapid heating and a very small heat radiation range is used to move and spray the cracks on the color layer boundary line 21 until it surrounds the entire mask 2, and then all the areas where the cracks appear in the color layer boundary line 21 are melted at high temperature, so that the parts where the cracks appear on the color layer boundary line 21 are fused after high temperature heating, and then the gaps are filled, so that the gaps on the color layer boundary line 21 completely disappear.

[0022] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A high temperature hydrogen flame treatment method for the different color masks of vehicle lights and tail lights, characterized in that: The color layer boundary line (21) is sprayed and baked in a movable manner along the lateral extension direction of the color layer boundary line (21) on the mask (2) using an oxyhydrogen flame gun (1).

2. The high temperature hydrogen flame treatment method for the different color masks of vehicle lights and tail lights according to claim 1 is characterized in that: The distance between the oxyhydrogen flame gun (1) and the color layer boundary line (21) is 2-3 mm.

3. The high temperature hydrogen flame treatment method for the different color masks of vehicle lights and tail lights according to claim 1 is characterized in that: The angle between the oxyhydrogen flame gun (1) and the mask (2) is a flat angle.

4. The high temperature hydrogen flame treatment method for the different color masks of vehicle lights and tail lights according to claim 1 is characterized in that: The moving speed of the oxyhydrogen flame gun (1) relative to the mask is 45-65 mm / s.

5. The high temperature hydrogen flame treatment method for the different color masks of vehicle lights and tail lights according to claim 1 is characterized in that: The diameter of the nozzle (11) of the oxyhydrogen flame gun (1) is 0.8 mm.

6. The high temperature hydrogen flame treatment method for the different color masks of vehicle lights and tail lights according to claim 1 is characterized in that: The gas pressure of the oxyhydrogen flame gun (1) is 60-70 mbar.

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