CN211807426U - Vehicle lamp plastic part with reflecting surface - Google Patents
Vehicle lamp plastic part with reflecting surface Download PDFInfo
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- CN211807426U CN211807426U CN201921703054.9U CN201921703054U CN211807426U CN 211807426 U CN211807426 U CN 211807426U CN 201921703054 U CN201921703054 U CN 201921703054U CN 211807426 U CN211807426 U CN 211807426U
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Abstract
The utility model belongs to the technical field of car lamp manufacturing, and discloses a car lamp plastic part with a reflecting surface, wherein a transparent plastic part is firstly injected for one time to serve as a reflecting surface carrier, then the reflecting surface carrier is taken as a coated base body based on the light transmission characteristic of the transparent plastic part, an aluminum film is coated on the back surface of the reflecting surface carrier, one surface of the aluminum film facing the reflecting surface carrier is a front surface, and the front surface of the aluminum film is a reflecting surface; and then, taking the reflecting surface carrier with the aluminum film plated on the back surface as a substrate, and performing secondary or repeated injection molding on the back surface to form the target coated vehicle lamp plastic part. The process can further improve the corrosion resistance and the ageing resistance of the coating film layer of the car lamp plastic part, is not easy to cause defects of collision or pollution and the like in the car lamp assembling process, effectively plays a role in protecting the metal film, enhances the corrosion resistance of the aluminum film, reduces the working procedures and reduces the cost.
Description
Technical Field
The utility model belongs to the car light field of making relates to plastic accessories for the car light, and a piece is moulded to concretely relates to car light of taking specular reflection effect, especially relates to a piece is moulded to car light of taking the plane of reflection.
Background
Along with the rapid development of the automobile industry and the continuous improvement of the automobile technology, the working performance of the automobile can meet the requirements of people more and more, but along with the improvement of the aesthetic level, the attention of people to the appearance of the automobile is higher and higher. The car light is an indispensable important component of the car, and the requirement on the car light lies in its illuminating effect on the one hand, and on the other hand lies in its influence to the outward appearance of car, and the car light is as the soul place on the outward appearance of car, has the effect of weight lifting to the outward appearance of car.
The reflecting surface is indispensable for a vehicle lamp, and is commonly used not only for reflected light distribution but also for decoration of the appearance of the vehicle lamp. The reflecting surface in the vehicle lamp is mainly formed by coating a plastic part with a film. The manufacturing of the reflecting surface requires that the surface of the plastic part has a certain reflectivity so as to meet the requirement of light reflection, and the reflecting layer is mainly prepared by adopting a vacuum evaporation aluminizing mode. The reflective film finished by evaporating aluminizing has the advantages of high reflectivity, low price and the like, and the prior process is stable and mature.
The existing problems are that the automobile lamp plastic part is often influenced by harsh environments such as strong light, high heat, water vapor and the like in the using process of an automobile, and because the oxidation corrosion resistance of the aluminum film is poor, the aluminum film of the reflecting surface is easily worn or corroded to cause falling off or aging and yellowing due to oxidation, the due effects of illumination, decoration and the like are gradually lost. Therefore, the design of the car lamp must ensure the weather resistance, wear resistance and high-temperature oxidation resistance of the car lamp plastic part coating layer, and also solve the problem of how to avoid the damage and the damage of the aluminum coating layer in the car lamp manufacturing, assembling, disassembling and maintaining processes so as to improve the yield of car lamp products and ensure that the car lamp coating layer is more effective for a long time.
The fabrication of a protective film on the reflective surface is a conventional approach to solve the above problems. For example, the combination process of vehicle lamp coating proposed by chinese patent application No. 200910308793.2 is helpful to improve the brightness, product quality and qualification rate of the product by adopting the combination process of vehicle lamp coating in the product pretreatment stage, the product aluminum plating stage, the secondary coating stage and the UV light curing stage. For example, the chinese patent application with patent No. 201320325175.0, which proposes an automotive lamp with vacuum coating, discloses that a silicone grease layer is first coated on the outer surface of the lamp plastic part, an aluminum film is coated on the surface of the silicone grease layer, and then the silicone grease layer is attached to the surface of the aluminum film as a protective layer.
The preparation of the protective film of the car lamp plastic part adopts a method of manually spraying an organic layer on the surface, the process is not completed under a vacuum condition, and the surface of an aluminum film is easily corroded in the spraying process. And the stability of the manual spraying process is poor, and the qualification rate of the car lamp prepared by the process is low, so that the requirements of high-grade cars on the lamp cannot be well met.
The method is that the monomer forms a protective film on the surface of the car lamp in the environment of ion glow discharge. The method can effectively solve the defects of the manual spraying process. But still has at least two drawbacks: firstly, during surface treatment, a photo-curing or thermosetting paint is sprayed on the surface of a plastic part, and a volatile solvent type coating is also sprayed on the surface of the plastic part by using a spray gun, but the spraying coating causes 60-70% of the coating to be scattered and wasted, only 30-40% of the coating is attached to the surface of the coated part, and the scattered coating further requires a large amount of wastewater treatment cost. Also, the volatile solvent type coating material causes air pollution. Secondly, the chemical stability of the sprayed organic coating is poor, and the transmittance of the organic coating is greatly reduced under the environment of high temperature and ultraviolet irradiation, so that the reflectivity of the car lamp is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that exists among the prior art, from the institutional advancement angle, provide a take the processing technology that a piece was moulded to car light of plane of reflection, can effectively improve the car light and mould corrosion-resistant and ageing resistance ability on a coating film layer to be difficult for causing defects such as bruising or pollution in car light assembling process.
The utility model adopts the technical scheme as follows:
a processing technology of a vehicle lamp plastic part with a reflecting surface comprises the steps of firstly, carrying out one-time injection molding on a transparent plastic part to serve as a reflecting surface carrier, then, plating an aluminum film on the back surface of the reflecting surface carrier to serve as a coated substrate based on the light transmission characteristic of the transparent plastic part, wherein the surface, facing the reflecting surface carrier, of the aluminum film is the front surface, and the front surface of the aluminum film is the reflecting surface; and then, taking the reflecting surface carrier with the back surface plated with the aluminum film as a substrate, and performing secondary or multiple injection molding on the back surface to form other structures including a vehicle lamp plastic part supporting structure and an assembling structure so as to form the target vehicle lamp plastic part.
The automobile lamp plastic part processed by the process completely protects the reflecting surface of the aluminum film inside the plastic part on the premise of ensuring the optical performance of the reflecting surface and keeping the integrity of the plastic part, effectively solves the problems that the aluminum film is easy to be worn or corroded to cause falling or aging and yellowing due to oxidation and the like, does not influence the reflectivity of the reflecting surface, and does not cause paint waste and environmental pollution.
According to the appearance design and assembly requirements of the vehicle lamp plastic part, the other structures can be completely injected on the back surface of the aluminum film, or can be completely injected on the part, which is not plated with the aluminum film, on the back surface of the reflecting surface carrier. Or, one part of the other structure is injected on the part of the back surface of the reflecting surface carrier which is not plated with the aluminum film, and the other part of the other structure is injected on the back surface of the aluminum film.
In order to further improve the overall structural strength of the vehicle lamp plastic part, a connecting body which is formed by injection molding with the reflecting surface carrier in one step can be designed at the position of the back surface of the reflecting surface carrier without the aluminum film, and the connecting body is injected into other structures when the other structures are injected twice or multiple times. So as to fully ensure the connection strength of the reflecting surface carrier which is subjected to the primary injection molding and other structures which are subjected to the secondary injection molding and the multiple injection molding.
Preferably, the back surface of the reflecting surface carrier is aluminized by an evaporation plating process, and the plating thickness is based on the condition that a mirror surface is formed on the back surface of the reflecting surface carrier. According to the experience of the prior art, the mirror effect of the light transmittance of less than 10% is achieved when the thickness of the aluminum film is 150 nm, and the light transmittance of the aluminum film is lower than 0.01% when the thickness of the aluminum film is 300 nm.
Based on above-mentioned processing technology, the utility model discloses further provide a take car light of plane of reflection to mould a piece, including the plane of reflection carrier, aluminium membrane and the other structures of plastics material, aluminium membrane and other structures are located the back of plane of reflection carrier, the plane of reflection carrier is including the reflecting region, the reflecting region is transparent, the back of reflecting region is smooth surface, the aluminium membrane is plated on the smooth surface at the back of reflecting region, the front of aluminium membrane is the plane of reflection towards the plane of reflection carrier, and the front of aluminium membrane is the plane of reflection, and other structures are moulded plastics at the back of plane of reflection carrier and/or aluminium membrane.
As an option, the plane of reflection carrier can be designed into the transparent working of plastics of thin wall (according to common general knowledge, the utility model discloses the transparent working of plastics of thin wall is less than 5mm of thickness), whole plane of reflection carrier is covered to the reflecting region, the aluminium membrane covers the back of plane of reflection carrier comprehensively, and other structures are moulded plastics at the back of aluminium membrane.
As another option, a part of the reflecting surface carrier is used as a reflecting area, the reflecting area is a thin-wall structure with uniform thickness, the aluminum film covers the back surface of the reflecting area completely, and other structures are injected on the back surface of the non-reflecting area of the reflecting surface carrier, or other structures are injected on the back surface of the aluminum film. Or, one part of other structures is injected on the back of the non-reflection area of the reflection surface carrier, and the other part of other structures is injected on the back of the aluminum film. The position of the reflecting surface need not be taken into account when designing other structures. The structure and position of other structures can be freely designed according to the supporting or mounting requirements.
Furthermore, a connecting body which is formed by injection molding with the reflecting surface carrier at one time is arranged on the back surface of the reflecting surface carrier, and the connecting body is injected into other structures when other structures are injected.
Preferably, the thickness of the aluminum film is 150-300 nm.
The utility model discloses the key lies in that in the past all car light is moulded a coating film preparation and is all being moulded a surface and accomplish, and the utility model discloses a through moulding a inside deposit aluminium membrane at the transparency, the working of plastics material generally is PC, PMMA, mould itself as a protection barrier, film thickness reaches 150 supplementarily with other materials 300nm, it is nearly 0 to realize the aluminium membrane to the light transmissivity, it does not influence the illumination performance of car light itself to send it to, mould an external light like the ultraviolet, corrosive liquid in addition, gas etc. has fine separation nature, and mould a back in the car light the preceding temperature lower than in the inside, steam is difficult for being corroded less, and even corrode in order to begin from aluminium membrane surface atom earlier, consequently this method gained aluminium membrane can be used for a long time and be unlikely to appear that the aluminium membrane drops, corrode, the phenomenon of yellow stain, and have the pleasing to the eye effect.
Drawings
FIG. 1 is a flow chart of the processing technique of the car lamp plastic part of the utility model.
Fig. 2 is a schematic diagram of a cross-sectional view of a first embodiment of the plastic part for a vehicle lamp of the present invention.
Fig. 3 is an isolated view of fig. 1.
Fig. 4 is a schematic diagram of a cross-sectional view of a second embodiment of the plastic part for a vehicle lamp according to the present invention.
Fig. 5 is a schematic cross-sectional view of a third embodiment of the plastic part for a vehicle lamp according to the present invention.
FIG. 6 is a schematic view of the connection between the reflecting surface carrier and the connector of the plastic part for a vehicular lamp of the present invention.
In the figure: a reflecting surface carrier 1, a back surface 11 of the reflecting surface carrier, a reflecting area 12, a connecting body 13, an aluminum film 2, a front surface 22 of the aluminum film, and other structures 3.
Detailed Description
The following is a specific embodiment of the present invention, and the technical solution of the present invention is further described with reference to the accompanying drawings.
The utility model provides a piece is moulded to car light is that the internal surface of moulding the piece at the car light plates the system aluminium membrane, has strengthened the corrosion resistance and the ageing resistance performance of aluminium membrane, need not to plate the protection film.
The utility model discloses a piece processing technology flow is moulded to car light, concrete step includes:
(1) the thin-wall transparent plastic piece with uniform thickness is injected and molded, the thickness of the thin-wall transparent plastic piece is 5mm, and the thin-wall transparent plastic piece is used as an emitting surface carrier;
(2) cleaning the inner surface of the reflecting surface carrier in a vacuum chamber with the vacuum degree of 10Pa, and effectively removing impurities such as dust, fingerprints and the like on the inner surface of the vehicle lamp plastic part;
(3) evaporating and plating an aluminum film in a vacuum chamber, heating a tungsten filament by a heating device, then placing an aluminum sheet on the tungsten filament, and directly depositing compact aluminum on an emission area of an emission surface carrier to form the aluminum film;
(4) the rear side of the reflector carrier is again molded with other structures of the lamp molding, such as a support structure or a mounting structure.
The vehicle lamp plastic part 1 with the aluminum film thickness of 150 nanometers, the vehicle lamp plastic part 2 with the aluminum film thickness of 220 nanometers and the vehicle lamp plastic part 3 with the aluminum film thickness of 300 nanometers are obtained through the steps.
The film dropping tests are respectively carried out on the vehicle lamp plastic part 1, the vehicle lamp plastic part 2 and the vehicle lamp plastic part 3, and according to the experimental phenomenon, the film does not drop after being soaked in 1% hydrochloric acid for 10 minutes, the film does not drop after being soaked in 1% sodium hydroxide for 10 minutes, and the aluminum film does not drop after being soaked in 40 ℃ water for 40 hours. And then, the test shows that the emissivity of the vehicle lamp plastic part 1 is 80%, the emissivity of the vehicle lamp plastic part 2 is 87%, and the emissivity of the vehicle lamp plastic part is 93%. Therefore, the design that the aluminum film is plated on the back surface of the plastic part to form the luminous surface can ensure the same reflectivity as that of the luminous surface plated on the front surface of the plastic part, and the corrosion resistance and the ageing resistance of the aluminum film can be enhanced. The design is also suitable for ornaments with reflecting surfaces, such as automobile bright strips and the like, and the service life is prolonged on the premise of ensuring the emissivity of the bright strips.
The utility model discloses a car light dress escutcheon, like fig. 2 to 3 for the first embodiment of car light dress escutcheon, including the even thin wall transparent plastic part of thickness reflection face carrier 1, be located the aluminium membrane 2 of the back 11 of reflection face carrier, be located other structures 3 at the back of reflection face carrier (other structures are the connection structure of installing the car light plastic part, like joint structure etc.). The reflecting surface carrier comprises a reflecting area 12, the reflecting area 12 is transparent, and the reflecting area 12 is a part of the reflecting surface carrier. The back surface of the reflecting area is a smooth surface, the aluminum film is plated on the smooth surface of the back surface of the reflecting area, the aluminum film completely covers the back surface of the reflecting area, and specifically, the smooth surface is plated with a layer of aluminum film with the thickness of 150-300 nm. While the front side 22 of the aluminum film is a reflective surface, i.e. the front side 22 of the aluminum film is facing the reflective surface carrier, as shown in fig. 3, the front side 22 of the aluminum film is in direct contact with the back side 11 of the reflective surface carrier, so that the front side 22 of the aluminum film forms a reflective surface. The further structures 3 are injection-molded on the back of the non-reflective areas of the reflective-surface carrier.
Fig. 4 shows a second embodiment of a vehicle lamp bezel, which is different from the first embodiment in that: the reflection area 12 covers the whole reflection surface carrier 1, i.e. the aluminum film 2 covers the back surface of the reflection surface carrier on the whole, and other structures are injected on the back surface of the aluminum film.
Fig. 5 shows a third embodiment of a decorative bezel for a vehicle lamp, which is different from the first embodiment in that: and a part of the other structures 3 are injected on the back surface of the non-reflection area of the reflection surface carrier, and the other parts are injected on the back surface of the aluminum film.
Considering that the processing technology of the car lamp plastic part is secondary or multi-time injection molding, the produced car lamp decorative frame has the problem of insecure connection, in order to solve the problem, as shown in fig. 6, other structures 3 are buckle structures, a connecting body 13 which is formed by injection molding with the reflecting surface carrier in one step is arranged at a position, which is not plated with an aluminum film, on the back surface of the reflecting surface carrier, and the connecting body 13 is injected into the buckle structures during secondary injection molding of the buckle structures, so that the connection between the buckle structures and the back surfaces of the reflecting surface carriers is firmer. The existence of connecting piece makes other structures of secondary or many times moulding plastics more firm, increases the fastness that the piece installation was moulded to the car light.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather the scope of the invention is intended to include equivalent technical means as would be understood by those skilled in the art from the inventive concepts.
Claims (5)
1. The utility model provides a take plane of reflection's car light plastic part, its characterized in that, including plane of reflection carrier, aluminium membrane and the plastics material structure of plastics material, aluminium membrane and plastics material structure are located the back of plane of reflection carrier, the plane of reflection carrier is including the reflecting region, the reflecting region is transparent, the back of reflecting region is smooth surface, the aluminium membrane is plated on the smooth surface at the back of reflecting region, the front of aluminium membrane is the plane of reflection towards the plane of reflection carrier, the front of aluminium membrane, the plastics material structure is moulded plastics at the back of plane of reflection carrier and/or aluminium membrane.
2. The automotive lamp plastic part with the reflecting surface as claimed in claim 1, wherein the reflecting surface carrier is a thin-wall transparent plastic part with uniform thickness, the reflecting region covers the whole reflecting surface carrier, the aluminum film covers the back surface of the reflecting surface carrier on the whole surface, and the plastic material structure is injected on the back surface of the aluminum film.
3. The vehicle lamp plastic part with the reflecting surface according to claim 1, wherein the reflecting area is uniform in thickness, the aluminum film covers the back surface of the reflecting area on the whole, the reflecting area is a part of the reflecting surface carrier, and the plastic material structure is injected on the back surface of the non-reflecting area of the reflecting surface carrier, or is injected on the back surface of the aluminum film, or is injected on the back surface of the non-reflecting area of the reflecting surface carrier on a part of the plastic material structure, and is injected on the back surface of the aluminum film on the other part of the plastic material structure.
4. The vehicle lamp molding with the reflecting surface according to claim 3, wherein the back surface of the reflecting surface carrier is provided with a connecting body which is formed by injection molding with the reflecting surface carrier in one step, and the connecting body is injected into a plastic material structure when the structure is injected.
5. The vehicular lamp plastic part with the reflecting surface as claimed in claim 1, wherein the thickness of the aluminum film is 150 nm and 300 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703054.9U CN211807426U (en) | 2019-10-12 | 2019-10-12 | Vehicle lamp plastic part with reflecting surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703054.9U CN211807426U (en) | 2019-10-12 | 2019-10-12 | Vehicle lamp plastic part with reflecting surface |
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| CN211807426U true CN211807426U (en) | 2020-10-30 |
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| CN201921703054.9U Active CN211807426U (en) | 2019-10-12 | 2019-10-12 | Vehicle lamp plastic part with reflecting surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757723A (en) * | 2019-10-12 | 2020-02-07 | 浙江天翀车灯集团有限公司 | Processing technology of vehicle lamp plastic part with reflecting surface and vehicle lamp plastic part |
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- 2019-10-12 CN CN201921703054.9U patent/CN211807426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757723A (en) * | 2019-10-12 | 2020-02-07 | 浙江天翀车灯集团有限公司 | Processing technology of vehicle lamp plastic part with reflecting surface and vehicle lamp plastic part |
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