Manufacturing process and application of exterior car lamp decorating part

Abstract

The invention discloses a manufacturing process and application of an exterior car lamp decorating part. The process comprises the steps that S1, an aluminum plate with a first surface and a second surface which are opposite is provided, a pattern is formed on the first surface or the second surface, and the other surface is coated with glue; s2, the aluminum plate is cut into the size required by the decorating part; s3, the cut aluminum plate is formed into a part shape needed by the decorating part, and a preformed part is obtained; the inner surface of the preform is a gluing surface, and the outer surface of the preform is a pattern surface; s4, injection molding is conducted on the inner surface of the preformed part, and an injection molding base material is formed; and S5, after injection molding, injection molding flash and redundant aluminum plates are removed through milling, and the exterior car lamp decorating part is obtained. The technology is a true aluminum technology with an aluminum sheet as surface decoration, the decoration part manufactured through the technology can be endowed with unique metallic luster and touch sense, the grade of a product and user experience can be remarkably improved, unique experience and luxury sense can be provided in the visual sense and the touch sense, and the vehicle looks more modern and high-end.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lamps, and in particular to a manufacturing process and application of an exterior lamp decoration part. Background Art

[0002] At present, the decorative parts on the headlights are mainly made by the following methods: (1) Vacuum coating scheme: Vacuum coating technology is an important surface engineering technology. It provides a functional film on the surface of the material by performing physical or chemical reactions in a vacuum environment, thereby improving or increasing the performance of the material. That is, the metal, alloy or compound is evaporated or sputtered in a vacuum, so that it solidifies and deposits on the coated object (i.e., substrate) to form a film. This method can enable the material surface to acquire new physical and chemical properties; (2) Film scheme: The film process is a surface decoration technology that improves the appearance and durability of the product by attaching a film material with a specific color and texture to the surface of the product. This process usually includes steps such as printing, hot pressing or injection molding, and can produce high-definition patterns and textures; 3) Plastic parts painting solution: Plastic parts painting is a process of applying a protective and decorative coating on the surface of plastic products. It uses corrosion-resistant materials to isolate corrosive media, thereby playing an anti-corrosion role. At the same time, this solution can also cover the surface defects of plastic products and improve the appearance and durability of the products. When spraying paint on plastic parts, different colors of paint can be selected according to requirements, and high-gloss paint or matte paint can also be selected. The process flow includes: ① plastic parts stress relief, ② surface treatment, ③ spraying paint, and ④ drying; (4) Die-casting aluminum solution: The die-casting aluminum process is an efficient and precise metal casting method, which is particularly suitable for the production of large quantities of thin-walled and complex-shaped aluminum alloy parts. The process has high production efficiency and good mechanical properties. The process flow includes: ① mold design and production, ② liquid metal filling and solidification, and ③ sand removal and cleaning.

[0003] However, the above-mentioned processes all have corresponding problems. For example, for the vacuum coating solution, there are the following problems: ① The coating layer is relatively thin, and it is easy for the substrate to be exposed due to scratches; ② During the coating process, the substrate temperature may be too high, which may cause the substrate performance to deteriorate; ③ The reaction gas and exhaust gas in the vacuum coating process are corrosive and toxic, which will threaten the environment and human body; for the diaphragm solution, there is a problem that special patterns require specially customized diaphragms and the research and development cycle is long, and there is no way to produce perfect metal effects and touch; for the plastic parts spray painting solution, there is a problem that it is impossible to produce fine patterns, and there is no way to produce perfect metal effects and touch; for the die-cast aluminum solution, there are problems such as the decorative parts are heavy, the color is single, it is impossible to produce fine patterns, and it is not corrosion-resistant. Summary of the invention

[0004] The purpose of the present invention is to propose a production process for exterior lamp decorations in response to the problems existing in the existing solutions for making lamp decorations. The process is a real aluminum process that uses aluminum sheets as surface decorations, thereby achieving the decorative effect of real aluminum and solving the problems existing in the above-mentioned solutions.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions:

[0006] The present invention provides a manufacturing process for an exterior lamp decoration, which comprises the following specific steps:

[0007] S1. Pretreatment: providing an aluminum plate having a first surface and a second surface opposite to each other, forming a pattern on the first surface or the second surface, and applying glue on the other surface;

[0008] S2, cutting: cutting the pre-treated aluminum sheet into the required size of the decorative parts;

[0009] S3, preform molding: molding the cut aluminum sheet into the shape of the part required by the decorative part to obtain a preform;

[0010] Wherein, the inner surface of the preform is a glue-coated surface, and the outer surface is a patterned surface;

[0011] S4, injection molding: performing injection molding on the inner surface of the preform to form an injection-molded substrate;

[0012] S5. Milling: After injection molding, the injection molding overflow and excess aluminum plate are removed by milling to obtain exterior lamp decorative parts.

[0013] Specifically, the process of the present invention is a real aluminum process using aluminum sheets as surface decoration. First, the surface of the aluminum sheet is pre-treated by ink printing, spray painting, etc., and then it is punched into the required shape of the part and injection molded with a plastic matrix on the back to achieve the decorative effect of real aluminum.

[0014] Specifically, the headlight decorative parts produced by the process of the present invention have high metallic luster and excellent touch, which can improve the grade of the product and user experience, and bring a sense of luxury and uniqueness to the user; at the same time, the process of the present invention can avoid pollution to the environment during the production process, making the production more environmentally friendly; the decorative parts produced by the process of the present invention can also increase the service life of the product, ensure that it is not easily affected by the external environment, and have good environmental adaptability, resistance to chemical corrosion, aging resistance and scratch resistance; the decorative parts produced by the process of the present invention are conducive to reducing the weight of the entire vehicle, improving fuel efficiency and power performance; the process of the present invention can also produce decorative parts with complex shapes and structures to meet different design requirements; the process of the present invention can be selected from a variety of colors, patterns, and 3D effects to meet different design appearance requirements.

[0015] Furthermore, a manufacturing process for an exterior lamp decoration part: Step S1 forms a desired pattern on the first surface or the second surface of the aluminum plate by spray painting or screen printing.

[0016] Furthermore, a manufacturing process for an exterior lamp decoration part: Step S3 processes the aluminum plate into a preform by CNC machining, pressing or stamping.

[0017] Furthermore, a manufacturing process for an exterior lamp decoration part: Step S4 places the preform in an injection mold and performs injection molding on the inner surface thereof, thereby forming an injection-molded substrate on the inner surface of the preform.

[0018] Furthermore, a manufacturing process of an exterior lamp decoration part: the injection mold includes the following:

[0019] A female mold having a molding cavity matched with the outer surface shape of the preform;

[0020] and a male mold, on which a protrusion matching the shape of the inner surface of the preform is provided, and the male mold is also provided with an injection channel for injection molding into the molding cavity;

[0021] Wherein, an injection molding space is left after the female mold and the male mold are molded together.

[0022] Furthermore, a manufacturing process for an exterior lamp decoration part: Step S4, injection molding: the preform is transferred to the molding cavity of the female mold by an external transfer device and fixed, and then the male mold and the female mold are combined, and injection molding is performed into the molding cavity through the injection channel to form an injection molding substrate on the inner surface of the preform.

[0023] Furthermore, a manufacturing process for an exterior lamp decoration part: the transfer device is configured as a suction cup.

[0024] The present invention also provides an application of an exterior vehicle lamp decorative piece, wherein the decorative piece manufactured by the above process is used in a vehicle taillight.

[0025] Beneficial effects of the present invention:

[0026] (1) The manufacturing process of the present invention is a real aluminum process that uses aluminum sheets as surface decoration. The decorative parts manufactured by the process of the present invention can be endowed with a unique metallic luster and touch, which can significantly improve the grade of the product and user experience, and can provide a unique experience and sense of luxury in both vision and touch, making the vehicle look more modern and high-end.

[0027] (2) The manufacturing process of the present invention can achieve low volatile organic compound (VOC) emissions, which meets the current requirements for environmental protection and health trends. At the same time, the decorative parts manufactured by this process also have good weather resistance and can resist the influence of severe weather conditions, thereby maintaining long-term stability and durability. The improvement of the coating hardness and toughness also makes the decorative parts (real aluminum parts) more wear-resistant and scratch-resistant in daily use.

[0028] (3) The use of such decorative parts produced by the process of the present invention helps to reduce the weight of the entire vehicle, thereby improving fuel efficiency and power performance; the production process of the present invention can process real aluminum materials into various complex shapes and structures through advanced production processes such as CNC processing, pressing, stamping, etc., to meet different design requirements; the process of the present invention can also adjust the color, pattern and 3D effect by spraying paint and screen printing on aluminum sheets, providing users with more diverse appearance options, thereby meeting consumers' needs for personalization and high-end customization. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A flowchart of the manufacturing process of an exterior vehicle lamp decoration provided in Example 1 of the present invention.

[0031] Markings in the figure: 1-aluminum plate, 2-preform, 3-injection molding substrate, 4-negative mold, 5-positive mold, 6-transfer device, 41-molding cavity, 51-protrusion, 52-injection molding channel. DETAILED DESCRIPTION

[0032] 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0033] Example 1

[0034] This embodiment 1 provides a manufacturing process for an exterior lamp decoration, which includes the following specific steps:

[0035] S1. Pretreatment: providing an aluminum plate 1 having a first surface and a second surface opposite to each other, and forming a desired pattern on the first surface or the second surface of the aluminum plate 1 by spray painting or screen printing, and applying glue on the other surface of the aluminum plate 1;

[0036] S2, cutting: cutting the pre-treated aluminum plate 1 into the size required by the decorative part;

[0037] S3, preform molding: the cut aluminum plate 1 is processed into the shape of the part required by the decorative part by stamping, so as to obtain the preform 2; at this time, the inner surface of the preform is the glue-coated surface, and the outer surface is the pattern surface;

[0038] S4, injection molding: placing the preform 2 in a molding mold for injection molding to form an injection-molded substrate 3 on the inner surface of the preform 2;

[0039] Wherein, the injection mold comprises:

[0040] A female mold 4 is provided with a molding cavity 41 adapted to the outer surface shape of the preform 2;

[0041] and a male mold 5, on which a protrusion 51 matching the shape of the inner surface of the preform 2 is provided, and the male mold 5 is also provided with an injection channel 52 for injection molding into the molding cavity 41;

[0042] Specifically, the injection molding process is as follows: the preform 2 is sucked from the glue-coated surface by an external transfer device 6 (adopting a suction cup structure) and transferred to the molding cavity 41 of the female mold 4 and fixed (the outer surface of the preform 2 is placed in the molding cavity 41), and then the male mold 5 and the female mold 4 are molded together, and after the molds are closed, there is an injection gap between the protrusion 51 on the male mold 5 and the inner surface of the preform 2, and then injection molding is performed into the injection gap (molding cavity 41) through the injection channel 52 on the male mold 5, so that the injection molded substrate 3 is formed on the inner surface of the preform 2;

[0043] S5, milling: After the injection molding is completed, the injection mold is opened, and the product is taken out by the suction cup transfer device 6, and then the injection molding overflow and the excess aluminum plate 1 are removed by milling to obtain the exterior lamp decoration. Figure 1 shown.

[0044] The exterior lamp decoration produced in the above-mentioned embodiment 1 is used for decoration in automobile taillights, which has the following effects: first, the decoration produced by the process of the present invention has good weather resistance, can resist the influence of adverse weather conditions, maintain long-term stability and durability, and the improvement of coating hardness and toughness also makes the decoration (real aluminum part) more wear-resistant and scratch-resistant in daily use; secondly, the decoration produced by the present invention has a unique metallic luster and touch, and can be adjusted by spraying paint and screen printing on the surface of aluminum sheets to adjust the color, pattern and 3D effect; it can also be processed into various complex shapes and structures to meet different design requirements, thereby meeting consumers' needs for personalization and high-end customization; these characteristics can significantly improve the grade of the product and user experience, and can provide a unique experience and luxury in both vision and touch, making the vehicle look more modern and high-end; in addition, the process of the present invention can achieve low volatile organic compound (VOC) emissions, and also help to reduce the weight of the entire vehicle.

[0045] The above are preferred embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. Any obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A process for manufacturing an exterior lamp decoration, characterized in that: The process includes the following steps: S1. Pretreatment: providing an aluminum plate (1) having a first surface and a second surface opposite to each other, forming a pattern on the first surface or the second surface, and applying glue on the other surface; S2, cutting: cutting the pre-treated aluminum plate (1) into the required size of the decorative part; S3, preform molding: molding the cut aluminum plate (1) into a shape of a part required for a decorative part to obtain a preform (2); Wherein, the inner surface of the preform (2) is a glue-coated surface, and the outer surface is a patterned surface; S4, injection molding: performing injection molding on the inner surface of the preform (2) to form an injection-molded substrate (3); S5, milling: after the injection molding, the injection molding overflow and the excess aluminum plate (1) are removed by milling to obtain the exterior lamp decoration part.

2. The manufacturing process of the exterior lamp decoration according to claim 1, characterized in that: Step S1: forming a desired pattern on the first surface or the second surface of the aluminum plate (1) by spray painting or screen printing.

3. The manufacturing process of the exterior lamp decoration according to claim 1, characterized in that: Step S3: Processing the aluminum plate (1) into a preform (2) by CNC processing, pressing or stamping.

4. The manufacturing process of the exterior lamp decoration according to claim 1, characterized in that: Step S4: placing the preform (2) in an injection mold and performing injection molding on the inner surface of the preform, thereby forming an injection-molded substrate (3) on the inner surface of the preform (2).

5. The manufacturing process of the exterior lamp decoration according to claim 4 is characterized in that: The injection mold comprises: A female mold (4) having a molding cavity (41) adapted to the shape of the outer surface of the preform (2); and a male mold (5) on which a protrusion (51) matching the shape of the inner surface of the preform (2) is provided, and the male mold (5) is also provided with an injection channel (52) for performing injection molding into the molding cavity (41); Wherein, an injection molding space is left after the female mold (4) and the male mold (5) are molded together.

6. The manufacturing process of the exterior lamp decoration according to claim 5, characterized in that: Step S4, injection molding: the preform (2) is transferred to the molding cavity (41) of the female mold (4) by an external transfer device (6) and fixed, and then the male mold (5) and the female mold (4) are combined, and injection molding is performed into the molding cavity (41) through the injection channel (52), so as to form an injection molding substrate (3) on the inner surface of the preform (2).

7. The manufacturing process of the exterior lamp decoration according to claim 6, characterized in that: The transfer device (6) is configured as a suction cup.

8. An application of an exterior lamp decoration, characterized in that: The decorative piece made by the process of any one of claims 1 to 7 is used in automobile taillights.

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