Injection molding integrated cover plate structure

Abstract

The utility model relates to an injection molding integrated cover plate structure which comprises a B column cover plate and an inner plate, the B column cover plate and the inner plate are connected together through injection molding TPE soft rubber or rubber, injection molding integration is achieved, and the previous scheme that a transparent cover plate is directly bonded with the inner plate through glue is replaced. The B column cover plate is made of one of PC (Polycarbonate), PMMA (Polymethyl Methacrylate), PC / PMMA or glass; and the inner plate is made of one of PC (Polycarbonate) and ABS (Acrylonitrile Butadiene Styrene), ABS or PC. According to the utility model, the cover plate and the inner plate are connected together through injection molding by adopting the TPE material, so that the production takt time is shortened, and the production efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile cover plates, in particular to an injection-molded integrated cover plate structure. Background Art

[0002] With the widespread application of AI and automated driving technologies in automobiles, high-transmittance cover panels are becoming a key enabler of automotive intelligence. B-pillar covers are a common type of cover. Located in front of and behind the car's window glass, B-pillars serve as exterior decoration, intelligent unlocking, and human-machine interaction. Currently, B-pillars integrate digital key recognition, biometric identification, and autonomous driving functions, resulting in a cleaner appearance and safer autonomous driving.

[0003] The current design scheme for the B-pillar cover is to directly connect the transparent cover and the inner panel by gluing, which has the following disadvantages: 1. The transparent cover and the inner panel are bonded by gluing, which has many gluing steps and a long curing time, affecting the product production rhythm; 2. The transparent cover and the inner panel are bonded by gluing, which requires an investment of tens of millions to build an automated gluing line, which is a large investment; 3. The transparent cover and the inner panel are bonded by gluing, which has many steps, large cumulative errors, and poor dimensional stability. In summary: the existing scheme has high product production costs and poor market competitiveness. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an injection-molded integrated cover plate structure, in which the cover plate and the inner plate are connected together by injection molding using TPE material, thereby reducing the production cycle time and greatly improving the production efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problem is: to provide an injection-molded integrated cover plate structure, including a B-pillar cover plate and an inner plate, wherein the B-pillar cover plate and the inner plate are connected together by injection-molded adhesive to achieve injection molding integration.

[0006] As a supplement to the technical solution described in the present invention, an injection molding space is provided between the B-pillar cover plate and the inner plate, and the injection molding space is used for injecting adhesive.

[0007] As a supplement to the technical solution described in the present invention, a groove is provided on the front side of the inner panel, and the groove is spliced with the end face of the B-pillar cover to form an injection molding space.

[0008] As a supplement to the technical solution described in the present invention, the material of the B-pillar cover is PC, PMMA, PC / PMMA or glass.

[0009] As a supplement to the technical solution described in the present invention, the material of the inner panel is PC+ABS, ABS or PC.

[0010] As a supplement to the technical solution described in the present invention, the material of the adhesive is TPE soft glue or rubber.

[0011] As a supplement to the technical solution described in the present invention, at least one mounting bracket is provided on the back of the inner plate, and each mounting bracket is fixedly connected to an electronic component.

[0012] As a supplement to the technical solution described in the present invention, the mounting bracket includes a camera bracket, on which a camera is mounted, and the material of the camera bracket is one of PC+ABS, ABS or PC.

[0013] Beneficial effects: The utility model relates to an injection-molded integrated cover plate structure, which has the following advantages:

[0014] 1. The cover plate and the inner plate are connected together by TPE injection molding. The cooling and curing time of the injection-molded TPE soft glue is 2 minutes, while the curing time of glue is at least 24 hours. The production cycle is reduced from 24 hours to 2 minutes, which can greatly improve production efficiency.

[0015] 2. The integrated injection molding method can be achieved through a two-color mold, while the use of glue requires an investment of tens of millions of dollars in an automated gluing production line, which can effectively reduce the cost of equipment investment;

[0016] 3. There is no glue pressing, curing and other processes, which can greatly simplify the manufacturing process and effectively reduce the tolerance accumulation caused by the long manufacturing process, so that the product size specifications can be more stable;

[0017] 4. This integrated injection molding solution has the advantages of low capital investment in the production line, fast production cycle, high dimensional accuracy, and dimensional stability, which greatly reduces product costs, improves the competitiveness of the cover in the market, and lays a stable foundation for market expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is the main view of the utility model;

[0020] Figure 3 This utility model Figure 2 Cross-sectional view in the AA direction;

[0021] Figure 4 This is a schematic structural diagram of the first injection mold of the present invention;

[0022] Figure 5It is a structural schematic diagram of the second injection mold described in the present utility model.

[0023] Diagram: 100, B-pillar cover, 200, inner panel, 300, adhesive, 400, camera, 500, camera bracket, 600, first shot mold movable mold, 700, first shot mold fixed mold, 800, inner panel gate, 900, slider, 1000, second shot mold movable mold, 1100, second shot mold fixed mold, 1200, TPE soft rubber gate, 1300, suction cup. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0025] The embodiment of the present utility model relates to an injection molded integrated cover plate structure, such as Figure 1-5 As shown, it includes a B-pillar cover 100 and an inner panel 200. The B-pillar cover 100 and the inner panel 200 are connected together by injection-molding TPE soft glue or rubber to achieve injection molding integration, replacing the previous solution of directly gluing the transparent cover to the inner panel with glue, to solve the problems of long cycle time, large investment, low dimensional accuracy, and poor dimensional stability in the prior art; the material of the B-pillar cover 100 is one of PC, PMMA, PC / PMMA or glass; PC / PMMA is a blend of PC and PMMA, usually supplied in the form of pellets after blending; PC / PMMA plastic is transparent, odorless and non-toxic; the material of the inner panel 200 is one of PC+ABS, ABS or PC.

[0026] Reference Figure 1 and Figure 3 As shown, an injection molding space for injecting adhesive 300 is provided between the B-pillar cover 100 and the inner panel 200. The injection molding space can have a variety of structures. One is to form an injection molding space by splicing a groove opened on the front of the inner panel 200 with the end face of the B-pillar cover 100. Another is to form an injection molding space by making a closed circle of ribs on the inner panel 200 and cooperating with the end face of the B-pillar cover 100. The fixed injection molding space is set to limit the range of injection and thus prevent glue overflow.

[0027] Furthermore, the cover plate is integrated with a number of electronic components, which are not limited to: TOF camera, ADAS camera, NFC, Bluetooth, screen, controller, micro switch, palm vein module, etc. The intelligent entry and automatic driving functions are realized by the above-mentioned electronic components, which can improve people's satisfaction and recognition of the car. At least one mounting bracket is provided on the back of the inner panel 200, and each mounting bracket is fixedly connected to an electronic component.

[0028] Specifically, refer to Figure 1 As shown, the mounting bracket includes a camera bracket 500, onto which the camera 400 is mounted. The camera bracket 500 is made of one of PC+ABS, ABS, or PC. PC+ABS is an engineering plastic alloy, known in the chemical industry as plastic alloy. It is named PC+ABS because it combines the excellent heat and weather resistance, dimensional stability, and impact resistance of PC resin with the excellent processing fluidity of ABS resin. Therefore, it can be used in thin-walled and complex-shaped products while maintaining its excellent performance and the moldability of the material composed of plastic and an ester.

[0029] The manufacturing method of the injection-molded integrated cover plate structure has the following specific steps:

[0030] Step 1: First, a transparent B-pillar cover 100 is made of one of PC, PMMA, PC / PMMA or glass. Depending on the material of the B-pillar cover 100, a surface treatment is performed on the front of the B-pillar cover 100. The surface treatment is specifically Hard Coating (HC, TP industry terminology), which is to produce a hardened protective coating. The hardness of the hardened layer (hardness grade) is usually expressed in pencil hardness as: low, 5B, 4B, 3B, 2B, B, HB, 1H, 2H, 3H, 4H, 5H, high; the hardened protective coating is applied by spraying, curtain coating or dipping; or AR, AF or AG film is used, and the film is applied by laminating, coating or atomizing; black ink is printed on the back of the B-pillar cover 100 by screen printing, pad printing, spray painting, yellow light process or laminating decoration to form a black frame and a transparent viewing area;

[0031] Step 2: Produce the required mounting brackets. The mounting brackets are not limited to the camera bracket 500. Apply matte treatment to the visible area of the B-pillar cover 100. The matte treatment can be done by spraying matte paint or flocking. If the injection molding solution is not feasible and disassembly is required, inserts are processed in advance. The inserts are made of PC+ABS, ABS, PC, metal, or glass. If the injection molding solution is feasible without disassembly, the inserts can be omitted.

[0032] Step 3: S1. Place the mounting bracket and / or insert in the first injection mold, and place the transparent B-pillar cover 100 in the second injection mold for combined injection molding; S2. Molding the inner panel 200 in the first injection mold to achieve injection molding and bonding of the mounting bracket and / or insert to the inner panel 200; S3. Molding TPE soft glue or rubber in the second injection mold to achieve bonding of the B-pillar cover 100 to the inner panel 200. A closed circle of ribs or grooves is required on the inner panel 200 to prevent glue overflow; the B-pillar injection molding integration is completed through steps S1, S2 and S3;

[0033] Reference Figure 4 As shown, a cavity for forming the inner plate 200 is provided between the fixed die 700 of the first injection mold and the movable die 600 of the first injection mold. Molten raw materials are injected into the cavity through the inner plate gate 800, and the side is assisted by the slider 900 to assist in molding.

[0034] Reference Figure 5 As shown, the lower end of the second injection mold fixed mold 1100 sucks the B-pillar cover 100 through the suction cup 1300, and the inner panel 200 is installed on the upper end of the second injection mold movable mold 1000. After the second injection mold fixed mold 1100 and the second injection mold movable mold 1000 are molded together, molten TPE soft glue is injected into the injection space between the B-pillar cover 100 and the inner panel 200 through the TPE soft glue gate 1200;

[0035] Step 4: Finally, fix each component to the B-pillar cover 100 accordingly. The components are not limited to: TOF camera, ADAS camera, NFC, Bluetooth, screen, controller, micro switch, palm vein module, etc.

[0036] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0039] The above is a detailed introduction to an injection-molded integrated cover plate structure provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An injection-molded integrated cover plate structure, comprising a B-pillar cover plate (100) and an inner plate (200), characterized in that: The B-pillar cover plate (100) and the inner plate (200) are connected together via an injection molding adhesive (300), thereby achieving injection molding integration.

2. The injection-molded integrated cover plate structure according to claim 1, characterized in that: An injection molding space is provided between the B-pillar cover plate (100) and the inner plate (200), and the injection molding space is used for injecting an adhesive material (300).

3. The injection-molded integrated cover plate structure according to claim 2, characterized in that: The front surface of the inner plate (200) is provided with a groove, and the groove is spliced with the end surface of the B-pillar cover plate (100) to form an injection molding space.

4. The injection-molded integrated cover plate structure according to claim 1, characterized in that: The material of the B-pillar cover (100) is one of PC, PMMA, PC / PMMA or glass.

5. The injection-molded integrated cover plate structure according to claim 1, characterized in that: The material of the inner plate (200) is one of PC+ABS, ABS or PC.

6. The injection-molded integrated cover plate structure according to claim 1, characterized in that: The material of the adhesive (300) is TPE soft glue or rubber.

7. The injection-molded integrated cover plate structure according to claim 1, characterized in that: At least one mounting bracket is provided on the back of the inner plate (200), and each mounting bracket is fixedly connected to an electronic component.

8. The injection-molded integrated cover plate structure according to claim 7, characterized in that: The mounting bracket comprises a camera bracket (500), a camera (400) is mounted on the camera bracket (500), and the material of the camera bracket (500) is one of PC+ABS, ABS or PC.

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