Edge corner area structure of composite material automobile exterior trimming part

Abstract

The utility model relates to the technical field of carbon fiber composite material forming, in particular to a composite material automobile exterior trimming part edge corner area structure. The stamping die comprises a composite material part and a stamping die body used for bending and forming the composite material part, the stamping die body comprises an upper die body, a lower die body, an undercut male die body and an undercut female die body, the undercut male die body and the undercut female die body are arranged in the upper die body and the lower die body respectively, and a profiling groove used for being matched with an undercut of the composite material part is formed in the end of the undercut male die body. A filling groove is further formed in the inverted-buckling area of the inverted-buckling profiling groove, the filling groove is formed in the inverted-buckling male die, and a carbon fiber one-way belt pre-infiltrated material layer is laid and attached to the inverted-buckling position of the end of the composite part. The composite material part has the advantages that the carbon fiber one-way belt prepreg is filled in the back-off areas of the edge corners of the composite material part, so that the problem that the composite material part cannot be formed is solved, and the production cost of the composite material part is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber composite material molding, in particular to an edge corner area structure of a composite material automobile exterior decoration part. Background Art

[0002] With the rapid development of new energy vehicles, the requirements for lightweight vehicles are becoming higher and higher. Carbon fiber, as a lightweight and high-strength new material, is very suitable for the lightweight requirements of new energy vehicles.

[0003] Since carbon fiber material molding is much more difficult than traditional plastic injection molding and sheet metal stamping, it is difficult to achieve large-scale mass production. Carbon fiber prepreg molding is one of the most commonly used mass production processes for carbon fiber, but since prepreg molding is difficult to mold parts with undercut structures, the mass production of carbon fiber parts is further increased.

[0004] Therefore, it is necessary to design a composite material automotive exterior trim edge corner area structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an edge corner region structure of a composite material automobile exterior trim to overcome the above-mentioned deficiencies in the current prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A composite material automobile exterior trim edge corner area structure, comprising a composite material part and a stamping die for bending the composite material part into shape, the stamping die comprising an upper die, a lower die, and an undercut punch disposed in the upper die and an undercut concave die disposed in the lower die, respectively, characterized in that: a profiling groove for cooperating with the undercut of the composite material part is provided at the end of the undercut punch, a filling groove is also provided in the undercut area of ​​the undercut profiling groove, and the filling groove is arranged on the undercut punch, and a carbon fiber unidirectional tape pre-impregnated material layer is laid on the undercut at the end of the composite material part.

[0008] Preferably, the diameter of the filling groove is set to be the same as the diameter of the composite material part.

[0009] Preferably, the shape and size of the carbon fiber unidirectional tape pre-impregnated material layer are the same as those of the filling slot.

[0010] The beneficial effect of the utility model is that the technical solution solves the problem of being unable to form by filling the carbon fiber unidirectional tape prepreg in the undercut area of ​​the edge corner of the composite material part, thereby reducing the production cost of such parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1This is a schematic diagram of the structure of the edge corner area of ​​a composite material automobile exterior trim of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the edge corner area of ​​a composite material automobile exterior trim after filling in the utility model;

[0013] In the figure: 1. Composite material part; 2. Undercut punch; 3. Undercut die; 4. Profiling groove; 5. Filling groove; 6. Carbon fiber unidirectional tape pre-impregnated material layer; DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] Reference Figure 1 to Figure 2 , a composite material automobile exterior trim edge corner area structure, comprising a composite material part 1 and a stamping die for bending the composite material part;

[0017] The stamping die comprises an upper die, a lower die, and an undercut punch 2 disposed in the upper die and an undercut die 3 disposed in the lower die respectively;

[0018] A profiling groove 4 for matching the undercut of the composite material part is provided at the end of the undercut punch, and a filling groove 5 is also provided in the undercut area of ​​the undercut profiling groove, and the filling groove is arranged on the undercut punch;

[0019] In order to effectively ensure that the filling slot is not filled too little or too much, the diameter of the filling slot is set to be the same as the diameter of the composite material part; at the same time, the size of the filling slot is set to be the same as the size of the composite material part that needs to be undercut;

[0020] A carbon fiber unidirectional tape pre-impregnated material layer 6 is laid on the undercut at the end of the composite material part, and the shape and size of the carbon fiber unidirectional tape pre-impregnated material layer are the same as the filling groove;

[0021] In this implementation method, the parts are first pre-laid according to the designed layup of the parts, and then the edge corner areas are filled with carbon fiber unidirectional tape prepreg until the entire undercut area is filled; the laid carbon fiber preform is sent into a mold for curing and molding.

[0022] The utility model is beneficial in that the technical solution solves the problem of being unable to form by filling carbon fiber unidirectional tape prepreg in the undercut area of ​​the edge corner of the composite material part, thereby reducing the production cost of such parts.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite material automobile exterior trim edge corner area structure, comprising a composite material part and a stamping die for bending the composite material part, the stamping die comprising an upper die, a lower die, and an undercut punch disposed in the upper die and an undercut concave die disposed in the lower die, characterized in that: A contoured groove for cooperating with the undercut of a composite material part is provided at the end of the undercut punch, and a filling groove is also provided in the undercut area of ​​the undercut contoured groove, and the filling groove is arranged on the undercut punch, and a carbon fiber unidirectional tape pre-impregnated layer is laid on the undercut of the end of the composite material part.

2. The composite material automotive exterior trim edge corner region structure according to claim 1, characterized in that: The diameter of the filling groove is set to be the same as the diameter of the composite material part.

3. The composite material automotive exterior trim edge corner region structure according to claim 1, characterized in that: The shape and size of the carbon fiber unidirectional tape pre-impregnated material layer are the same as those of the filling slot.

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