Automobile bumper free of colored paint spraying and automobile

Abstract

The utility model discloses an automobile bumper free of colored paint spraying, which comprises a bumper body and a coating, the bumper body is an integrated colored injection molding part, the coating is positioned on the outer surface of the bumper body, and the coating comprises a transparent primer layer and a varnish layer, the transparent primer layer and the varnish layer sequentially cover the outer surface of the bumper body. According to the utility model, colored paint spraying is omitted, the spraying efficiency is improved, the spraying cost is reduced, the environmental protection property is better, the later scraping maintenance cost is low, the period is short, and the color of the bumper can be kept consistent with the brightness of a vehicle body. The utility model further provides an automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile colorless paint spraying bumper and an automobile. Background Art

[0002] With the rapid development of the automotive industry, the traditional bumper coating process for PP-based modified plastics typically involves a three-layer application process: primer, basecoat, and clearcoat. This multi-layer process results in high energy consumption and severe pollution. Furthermore, vehicles are often subject to collisions and scratches during use, resulting in high costs for subsequent painting and repair. Consequently, users are increasingly demanding ease of use and subsequent maintenance, as well as cost control. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a car bumper and a car that is sprayed without color paint, which eliminates the need for color paint spraying, improves spraying efficiency, reduces spraying costs, is more environmentally friendly, has low repair costs and a short cycle for subsequent scratches, and the color of the bumper can be kept consistent with the brightness of the car body.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A paint-free spray-coated bumper for an automobile comprises a bumper body and a coating, wherein the bumper body is an integrated colored injection molded part, the coating is located on the outer surface of the bumper body, and the coating comprises a transparent primer layer and a clear coat layer, wherein the transparent primer layer and the clear coat layer sequentially cover the outer surface of the bumper body.

[0006] In one embodiment, the bumper body is made of modified polypropylene, including PP+EPDM-T20 material or PP+EPDM-T30 material.

[0007] In one embodiment, the transparent primer layer has a thickness of 3-5 μm.

[0008] In one embodiment, the thickness of the varnish layer is 30-40 μm.

[0009] In one embodiment, the bumper body includes a main guard plate and a top guard plate, the top guard plate is connected to the top of the main guard plate, headlight mounting grooves are provided between the two sides of the main guard plate and the top guard plate, and a license plate mounting groove is provided at the lower end of the main guard plate.

[0010] In one embodiment, the peripheries of the main guard plate and the top guard plate are provided with flanged surfaces, the flanged surfaces are provided with a plurality of fixing points, and the flanged surfaces are connected to the vehicle body components via the fixing points.

[0011] In one embodiment, a plurality of injection molding gates are provided on the bumper body, and the plurality of injection molding gates are arranged on the flange surface.

[0012] In one embodiment, the bumper further includes a trailer hook cover, the bumper body is provided with a mounting opening, the trailer hook cover is mounted in the mounting opening, and the trailer hook cover can flip in a direction away from the bumper body after being subjected to force.

[0013] In one embodiment, the trailer hook cover includes a fixed edge and a flip edge, the fixed edge is fixed to the bumper body via a rotating shaft, and the flip edge is connected to the bumper body via a snap-fit structure.

[0014] The utility model also provides a car, which is equipped with the above-mentioned car colorless paint spraying bumper.

[0015] The beneficial effects of the utility model are as follows: by spraying a transparent primer layer and a clear coat layer on the colored bumper body in sequence, the spraying of the original colored paint is eliminated, which can reduce the investment in equipment and personnel, reduce energy consumption, shorten the painting cycle and reduce the pollution caused by spraying; and effectively improve the scratch resistance, and the bumper color is consistent with the brightness of the car body; when scratched, it is only necessary to spray the transparent primer and clear coat locally, thereby reducing the maintenance cycle and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 Schematic diagram of the cross-sectional structure of the automobile bumper coating according to an embodiment of the present utility model;

[0018] Figure 2 It is a structural schematic diagram of an automobile bumper according to an embodiment of the present utility model;

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure without the trailer hook cover installed;

[0020] Figure 4 yes Figure 3 Schematic diagram of the back structure;

[0021] Figure 5 It is a flow chart of the spraying process of the colorless paint spraying bumper of the car.

[0022] In the figure: 1. Bumper body; 11. Main guard plate; 12. Top guard plate; 13. Headlight mounting slot; 14. License plate mounting slot; 15. Flanged surface; 151. First flanged surface; 152. Second flanged surface; 153. Third flanged surface; 154. Fourth flanged surface; 16. Fixing point; 17. Mounting port; 2. Coating; 21. Transparent primer layer; 22. Clear varnish layer; 3. Trailer hook cover. DETAILED DESCRIPTION

[0023] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0024] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0025] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0026] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0027] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0028] In view of the problems that traditional bumper parts spray painting plants have to invest a lot of equipment, are highly polluting, have high energy consumption, have a long painting cycle, and have high process costs, as well as the bumper's poor scratch resistance, the surface gloss cannot be consistent with the body paint color, and the after-sales maintenance cycle is long and expensive, this utility model provides a car colorless paint spray bumper to solve the above problems. Figure 1As shown, the automobile paint-free spray bumper includes a bumper body 1 and a coating 2. The bumper body 1 is an integrated colored injection molded part. The coating 2 is located on the outer surface of the bumper body 1. The coating 2 includes a transparent primer layer 21 and a clear coat layer 22. The transparent primer layer 21 and the clear coat layer 22 sequentially cover the outer surface of the bumper body 1. In this embodiment, by spraying the transparent primer layer 21 and the clear coat layer 22 on the colored bumper body 1 in sequence, the spraying of the original colored paint is eliminated, which can reduce the investment in equipment and personnel, reduce energy consumption, shorten the painting cycle, and reduce the pollution caused by spraying; and effectively improve the scratch resistance, and the bumper color is consistent with the brightness of the car body; after scratching, only the transparent primer and clear coat need to be sprayed locally, thereby reducing the maintenance cycle and reducing maintenance costs. Among them, the spraying process of the automobile paint-free spray bumper is as follows: Figure 5 As shown, the bumper body 1 is formed by colored injection molding, and the color of the bumper body 1 is selected according to the color requirements of the vehicle body.

[0029] In one embodiment, the bumper body 1 is made of modified polypropylene (PP), including PP+EPDM-T20 or PP+EPDM-T30. Metal powder, mineral powder, or various colored toners are added to the PP modified plastic raw material and then injection molded to produce a colored injection molded part. Currently, most spray-free plastic parts are made of materials such as ABS, ASA, and PMMA. These materials are relatively expensive and have poor scratch resistance. They are only suitable for automotive decorative parts and cannot be used for large bumpers due to the material quality. In this embodiment, by spraying a transparent primer and clear coat onto the color-modified PP injection-molded bumper substrate, the scratch resistance is effectively improved and the bumper color is consistent with the vehicle body's brightness. The bumper body 1 is made of modified polypropylene. PP is polypropylene, a thermoplastic resin made by polymerizing propylene. EPDM is ethylene propylene diene monomer (EPDM). T20 indicates the presence of talc at a mass fraction of 20%, and T30 indicates the presence of talc at a mass fraction of 30%.

[0030] As an embodiment, the thickness of the transparent primer layer 21 is 3-5 μm. Traditional primers are colored, such as gray, and mainly serve to protect the vehicle body and fix the color paint; in this embodiment, the primer layer is transparent, thin, has good light transmittance, increases adhesion, and can dry quickly. Specifically, the thickness of the transparent primer layer 21 is set to 3-5 μm. Within this thickness range, the coating has good anti-penetration, concealing properties and adhesion, which can ensure the overall quality and durability of the coating; and this thickness is less than the thickness of a conventional primer layer. At this thickness, the transparency and gloss of the transparent primer layer 21 can be guaranteed. Too thick a primer can lead to a decrease in light transmittance, making the surface appear turbid or rough, resulting in the color of the bumper body 1 showing poor color brightness after passing through the transparent primer layer 21, and a reduced appearance. Therefore, the thickness of the transparent primer layer 21 is 3-5 μm, which is a balance point that takes into account the transparency and adhesion of the coating.

[0031] As an embodiment, the thickness of the clearcoat layer 22 is 30-40 μm. The clearcoat layer 22 can be sprayed multiple times to achieve smoothness. Specifically, the clearcoat layer's primary function is to protect the transparent primer layer 21 from erosion by ultraviolet rays, rain, dirt, and other environmental factors; at the same time, it increases the brightness and brilliance of the bumper, giving it a lustrous appearance. The 30-40 μm thickness of the clearcoat layer 22, combined with the 3-5 μm thickness of the transparent primer layer 21, ensures the bumper has high corrosion and wear resistance, as well as a uniform color brightness, a good glossy appearance, and a strong aesthetic appeal.

[0032] As an implementation method, Figures 2 to 4 As shown, the bumper body 1 includes a main guard plate 11 and a top guard plate 12. The top guard plate 12 is connected to the top of the main guard plate 11. Headlight mounting grooves 13 are provided between the two sides of the main guard plate 11 and the top guard plate 12. A license plate mounting groove 14 is provided at the lower end of the main guard plate 11.

[0033] As an implementation method, Figure 4As shown, the periphery of the main guard plate 11 and the top guard plate 12 is provided with a flange surface 15, and the flange surface 15 is provided with multiple fixing points 16. The flange surface 15 is connected to the vehicle body components through the fixing points 16. One or more bolt holes can be set at the fixing points 16 for connecting to the vehicle body components. Specifically, the flange surface 15 includes a first flange surface 151, a second flange surface 152, a third flange surface 153 and a fourth flange surface 154. The first flange surface 151 is located at the top of the top guard plate 12 and can be provided with eight fixing points 16 for connecting to the vehicle body; the second flange surface 152 is located on the side of the main guard plate 11 and the top guard plate 12 near the headlight mounting groove 13 for connecting to the headlight; the third flange surface 153 is provided at the middle lower end of the main guard plate 11 for matching connection with the lower grille; the fourth flange surface 154 is provided at the lower ends of both sides of the main guard plate 11 and can be provided with four fixing points 16 for matching connection with the bottom guard plate.

[0034] As an implementation method, Figure 2 As shown, the bumper body 1 is provided with multiple injection gates (not shown), and multiple injection gates are arranged on the flange surface 15. Specifically, multiple injection gates are provided on the first flange surface 151, the second flange surface 152, and the third flange surface 153; among them, the injection gates on the third flange surface 153 are evenly arranged at intervals of 300mm. By hiding the injection gates on the flange surface 15 where they do not affect the appearance, the structural surface is optimized and the hole design is reduced. This can effectively avoid the injection gate directly hitting during injection molding and the occurrence of injection gate impact flow marks, thereby improving the appearance quality and pass rate of the bumper.

[0035] As an implementation method, Figure 2 and Figure 3 As shown, the bumper also includes a trailer hook cover 3. The bumper body 1 is provided with a mounting opening 17. The trailer hook cover 3 is installed in the mounting opening 17. When the trailer hook cover 3 is subjected to force, it can be flipped away from the bumper body 1 so that the trailer hook can be exposed.

[0036] As an embodiment, the trailer hook cover 3 includes a fixed side (not shown) and a flip side (not shown). The fixed side is fixed to the bumper body 1 via a rotating shaft, and the flip side is connected to the bumper body 1 via a snap-fit structure. When the trailer hook cover 3 is pressed firmly, the trailer hook cover 3 flips outward and pops out, exposing the trailer hook.

[0037] The utility model also provides a car, which is equipped with the above-mentioned car color-free paint spraying bumper.

[0038] The beneficial effects of the utility model include:

[0039] 1. A transparent primer layer 21 and a clear coat layer 22 are sequentially coated on the outer surface of the bumper body 1, eliminating the need for a color coat layer. This shortens the spraying cycle, reduces equipment and personnel investment, and reduces energy consumption, manufacturing costs, and environmental pollution.

[0040] 2. The colored injection-molded bumper body 1 is sprayed with transparent primer and clearcoat to solve the color difference problem caused by the inconsistency between the gloss of ordinary spray-free paint and the gloss of the body paint, so that the bumper can achieve the effect of uniform color and brightness with the body;

[0041] 3. Solve the problem of bumper scratches and bruises caused by scrapes and collisions during vehicle use, which leads to multiple repair processes, long working hours and high costs for users; only transparent primer and clear varnish spraying are required after local polishing, thereby reducing maintenance cycles and lowering maintenance costs.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the technical content disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A car paint-free spray bumper, characterized in that: The invention comprises a bumper body (1) and a coating (2), wherein the bumper body (1) is an integrated colored injection molded part, the coating (2) is located on the outer surface of the bumper body (1), and the coating (2) comprises a transparent primer layer (21) and a clear varnish layer (22), and the transparent primer layer (21) and the clear varnish layer (22) sequentially cover the outer surface of the bumper body (1).

2. The automobile colorless paint spraying bumper according to claim 1, characterized in that: The bumper body (1) is made of modified polypropylene material, including PP+EPDM-T20 material or PP+EPDM-T30 material.

3. The automobile colorless paint spraying bumper according to claim 1, characterized in that: The thickness of the transparent primer layer (21) is 3-5 μm.

4. The automobile colorless paint spraying bumper according to claim 1, characterized in that: The thickness of the varnish layer (22) is 30-40 μm.

5. The automobile colorless paint spraying bumper according to claim 1, characterized in that: The bumper body (1) comprises a main guard plate (11) and a top guard plate (12), wherein the top guard plate (12) is connected to the top of the main guard plate (11), headlight mounting grooves (13) are provided between the two sides of the main guard plate (11) and the top guard plate (12), and a license plate mounting groove (14) is provided at the lower end of the main guard plate (11).

6. The automobile colorless paint spraying bumper according to claim 5, characterized in that: The peripheries of the main guard plate (11) and the top guard plate (12) are provided with flanged surfaces (15), a plurality of fixing points (16) are provided on the flanged surfaces (15), and the flanged surfaces (15) are connected to the vehicle body components via the fixing points (16).

7. The automobile colorless paint spraying bumper according to claim 6, characterized in that: The bumper body (1) is provided with a plurality of injection gates, and the plurality of injection gates are arranged on the flange surface (15).

8. The automobile colorless paint spraying bumper according to claim 1, characterized in that: The bumper further comprises a trailer hook cover plate (3); the bumper body (1) is provided with a mounting opening (17); the trailer hook cover plate (3) is mounted in the mounting opening (17); and the trailer hook cover plate (3) can flip in a direction away from the bumper body (1) after being subjected to force.

9. The automobile colorless paint spraying bumper according to claim 8, characterized in that: The trailer hook cover plate (3) comprises a fixed edge and a flip edge, the fixed edge is fixed to the bumper body (1) via a rotating shaft, and the flip edge is connected to the bumper body (1) via a snap-fit structure.

10. An automobile, characterized in that: The automobile is equipped with the automobile colorless paint spraying bumper according to any one of claims 1 to 9.

Images