Spraying-free flow guide cover

Abstract

The utility model relates to a spraying-free air guide sleeve which comprises an air guide sleeve body and a spraying-free sheet material modification layer, the air guide sleeve body is formed by hot pressing after a plurality of continuous fiber reinforced thermoplastic one-way belts are stacked, the rotation angles of every two adjacent continuous fiber reinforced thermoplastic one-way belts are different, and the spraying-free sheet material modification layer is a thermoplastic sheet material. And the spraying-free sheet modification layer covers the flow guide cover body. According to the spraying-free flow guide cover provided by the utility model, different angles are arranged among the plurality of stacked continuous fiber reinforced thermoplastic one-way belts, so that the defect that the strength in a non-fiber angle direction is sharply reduced can be avoided to the greatest extent, and the structural strength of the flow guide cover body is ensured; and meanwhile, the spraying-free sheet modification layer covers the flow guide cover body so as to ensure the visual effect of the appearance of the flow guide cover.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fairing technical field, especially relate to a spray-free fairing. BACKGROUND

[0002] Energy saving and emission reduction has been the design goal of the automotive industry, commercial truck fairing significantly reduces the vehicle drag, reduces fuel consumption, fairing gradually from metal stamping parts gradually to all plastic parts. As a solution to the fairing, thermosetting composite materials have been relatively mature, such as carbon fiber fabric and epoxy resin using HRTM process forming, glass fiber and unsaturated resin using SMC and BMC process molding, although the weight is relatively reduced compared with metal, but thermosetting materials are not recyclable, and the storage conditions of raw materials are not friendly, making it difficult to widely promote thermosetting materials.

[0003] Thermoplastic materials are recyclable and friendly to use, but the strength is relatively low, usually reinforced by adding inorganic or organic fibers, so it is difficult to meet the needs of both appearance and strength of the fairing. SUMMARY

[0004] Therefore, the utility model aims at the shortage of prior art, provides a spray-free fairing, so that the spray-free sheet is fused with the outer surface of the fairing body through the plastic suction process, so that the outer surface of the fairing has the spray-free effect and has sufficient structural strength.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A spray-free fairing, comprising a fairing body and a spray-free sheet modification layer, the fairing body is formed by hot pressing after lamination of a plurality of continuous fiber reinforced thermoplastic unidirectional tapes, the rotation angles of the two adjacent continuous fiber reinforced thermoplastic unidirectional tapes are different, the spray-free sheet modification layer is a thermoplastic sheet, and the spray-free sheet modification layer covers the fairing body.

[0007] In order to better realize the utility model, the fairing body and the spray-free sheet modification layer are both resin matrix in the above structure.

[0008] In order to better realize the utility model, the spray-free sheet modification layer is covered on the fairing body in the form of plastic suction in the above structure.

[0009] In order to better realize the utility model, the thickness of the continuous fiber reinforced thermoplastic unidirectional tape is 0.1-0.4mm, and the thickness of the fairing body is 1.0-5.0mm in the above structure.

[0010] In order to better realize the utility model, the thickness of the spray-free sheet modification layer is 0.2-4.0 mm in the above structure.

[0011] In order to better realize the utility model, the accessory support is arranged at the bottom of the fairing body.

[0012] In order to better realize the utility model, the accessory support is made of thermoplastic material of resin matrix.

[0013] In order to better realize the utility model, the accessory support is hot-melt welded at the bottom of the fairing body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The spray-free fairing provided by the utility model can avoid the defect of sharp reduction of strength in non-fiber angle direction to the maximum extent by arranging different angles between the laminated multiple continuous fiber reinforced thermoplastic unidirectional tapes, and ensure the structural strength of the fairing body; meanwhile, the spray-free sheet modification layer is covered on the fairing body to ensure the visual effect of the appearance of the fairing. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the drawings without creative labor.

[0017] Fig. 1 It is the overall structure schematic view of the spray-free fairing of the utility model;

[0018] Fig. 2 It is the exploded structure schematic view of the spray-free fairing of the utility model;

[0019] Fig. 3 It is the structure schematic view of the laminated continuous fiber reinforced thermoplastic unidirectional tapes in the utility model.

[0020] In the drawing:

[0021] 1-fairing body, 101-continuous fiber reinforced thermoplastic unidirectional tape, 2-spray-free sheet modification layer, 3-accessory support. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0023] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Please refer to Figs. 1-3The spray-free fairing provided by the application comprises a fairing body 1 and a spray-free sheet decoration layer 2, and the fairing body 1 and the spray-free sheet decoration layer 2 are both resin matrices. The fairing body 1 is formed by hot pressing after lamination of a plurality of continuous fiber reinforced thermoplastic unidirectional tapes 101. During production, the plurality of continuous fiber reinforced thermoplastic unidirectional tapes 101 are first formed into a plate material through hot pressing, and then cut into a specific shape. After being heated and softened, the continuous fiber reinforced thermoplastic fairing body 1 with a special shape and size is molded and cut. The rotation angles of the adjacent two continuous fiber reinforced thermoplastic unidirectional tapes 101 are different. In a preferred embodiment, the lamination angles include at least four angles of 0°, ±15°, ±30°, ±45°, ±60°, ±75° and 90°, which can maximize the avoidance of the defect of sharp reduction in strength in non-fiber angle directions and ensure the structural strength of the fairing body 1. In this embodiment, the thickness of the continuous fiber reinforced thermoplastic unidirectional tape 101 is 0.1-0.4 mm, and the thickness of the fairing body 1 is 1.0-5.0 mm. Too low thickness of the plate material will result in insufficient strength of the fairing body 1, while too high thickness will not achieve the effect of lightweight.

[0026] The spray-free sheet decoration layer 2 is a thermoplastic sheet. During application, the spray-free sheet decoration layer 2 is colored by containing color powder in the spray-free thermoplastic plastic formula to avoid painting, and contains at least one of components such as pearl powder, mica powder and metal powder to obtain the spray-free effect. The spray-free sheet decoration layer is obtained by extrusion, calendering and casting process of the spray-free thermoplastic plastic. The use of extrusion, calendering and casting can make the spray-free sheet obtain a much higher smoothness appearance effect than that obtained by in-mold injection molding process. The thickness is 0.2-4 mm. Too low thickness leads to poor covering and decoration effect of the spray-free sheet, and too high thickness leads to difficulty in subsequent vacuum forming.

[0027] The spray-free sheet decoration layer 2 is covered on the fairing body 1 in a vacuum forming manner. Thus, the outer surface and edge of the fairing body 1 are provided with the spray-free sheet decoration layer, without the defects of in-mold integrated injection molding and painting process in a complex mold.

[0028] The fairing further comprises an auxiliary support 3, which is a thermoplastic material of a resin matrix and is hot melt welded at the bottom of the fairing body 1. The auxiliary support 3 can be formed by one-time injection molding in one mold, or separately formed by using multiple molds, or cut into a desired shape from a plate material of the same specification as the fairing body 1 and then heated and softened and bent. The separately formed auxiliary support 3 makes the fairing structure have sufficient design freedom.

[0029] Embodiment 1:

[0030] Firstly, the continuous fiber reinforced thermoplastic unidirectional tape with a thickness of 0.3 mm is laid according to the following angle sequence: 0° / 15° / 30° / 45° / 60° / 75° / 90° / -75° / -60° / -45° / -30° / -15° / 0°, and then hot-pressed to obtain a continuous fiber reinforced thermoplastic plate with a thickness of 3.9 mm. Then, the continuous fiber reinforced thermoplastic plate obtained above is cut into a specific size of the fairing, heated and softened, and then molded and shaped by a molding machine to obtain the required fairing body 1.

[0031] Then, the thermoplastic particles are injected into the mold after melting to form multiple auxiliary supports 3. The auxiliary supports 3 obtained by injection molding are welded with the fairing body 1 by hot melting, and the required mounting structure support of the fairing body 1 is completed.

[0032] The spray-free material containing aluminum powder is obtained by a casting process to obtain a 1.0 mm thick spray-free sheet, and a specific shape of the spray-free sheet decoration layer 2 is obtained by cutting.

[0033] Then, the fairing body 1 after molding and shaping of the continuous fiber reinforced thermoplastic plate is placed in a special structure of a suction mold. The outer surface of the fairing body 1 and the spray-free sheet decoration layer 2 are heated at the same time, the spray-free sheet is softened, the outer surface of the fairing body 1 is quickly heated to a slightly molten state under the condition of maintaining the appropriate rigidity of the fairing body 1, and then the softened spray-free sheet decoration layer 2 is transferred to the top of the suction mold. The air in the suction mold is quickly pumped to a specific vacuum degree, the softened spray-free sheet decoration layer 2 is quickly fused with the outer surface of the fairing body 1 under the action of atmospheric pressure, and after sufficient cooling and shaping, the excess spray-free sheet decoration layer 2 is cut to obtain the required spray-free thermoplastic composite fairing.

[0034] Example 2:

[0035] Firstly, the continuous fiber reinforced thermoplastic unidirectional tape with a thickness of 0.25 mm is laid according to the following angle sequence: 0° / 30° / 45° / 60° / 90° / -60° / -45° / -30° / 0°, and then hot-pressed to obtain a continuous fiber reinforced thermoplastic plate with a thickness of 2.25 mm.

[0036] The continuous fiber reinforced thermoplastic plate obtained above is cut into a specific size of the fairing, heated and softened, and then molded and shaped by a molding machine to obtain the required fairing body 1.

[0037] The continuous fiber reinforced thermoplastic plate with a thickness of 2.25 mm is cut into a specific shape, heated and softened, and then bent to obtain the auxiliary support 3.

[0038] The spray-free material containing the pearlescent powder is subjected to a flow casting process to obtain a 1.5mm-thick spray-free sheet, and the spray-free sheet is cut to obtain a spray-free sheet decorative layer 2 of a specific shape.

[0039] The flow deflector body 1 after the molding and setting of the continuous fiber reinforced thermoplastic sheet is placed in a special structure suction mold, the outer surface of the flow deflector body 1 is heated at the same time as the spray-free sheet decorative layer 2, the spray-free sheet is softened, the outer surface of the flow deflector body 1 is rapidly heated to a slightly molten state while maintaining the appropriate rigidity of the flow deflector body 1, the softened spray-free sheet decorative layer 2 is transferred to the top of the suction mold, the air in the suction mold is rapidly extracted to a specific vacuum degree, the softened spray-free sheet decorative layer 2 is rapidly fused with the outer surface of the flow deflector body 1 under the action of atmospheric pressure to form an integrated whole, after sufficient cooling and setting, the excess spray-free sheet decorative layer 2 is cut to obtain the required spray-free thermoplastic composite flow deflector.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A spray-free cowling, characterized by: The application relates to a fairing body (1) and a spray-free sheet decoration layer (2), the fairing body (1) is formed by laminating a plurality of continuous fiber reinforced thermoplastic unidirectional tapes (101) and hot pressing, the rotation angles of two adjacent continuous fiber reinforced thermoplastic unidirectional tapes (101) are different, and the spray-free sheet decoration layer (2) is a thermoplastic sheet.

2. A spray-free fairing according to claim 1, characterized in that: The fairing body (1) and the spray-free sheet decoration layer (2) are both resin matrices.

3. A spray-free fairing according to claim 2, wherein: The spray-free sheet decoration layer (2) is covered on the fairing body (1) in a blister way.

4. A spray-free radome according to claim 1, wherein: The thickness of the continuous fiber reinforced thermoplastic unidirectional tape (101) is 0.1-0.4 mm, and the thickness of the fairing body (1) is 1.0-5.0 mm.

5. A spray-free fairing according to claim 4, wherein: The thickness of the spray-free sheet decoration layer (2) is 0.2-4.0 mm.

6. A spray-free fairing according to any one of claims 1-5, characterized in that: An auxiliary support (3) is further arranged at the bottom of the fairing body (1).

7. A spray-free fairing according to claim 6, wherein: The auxiliary support (3) is a thermoplastic material of a resin matrix.

8. A spray-free fairing according to claim 7, characterized in that: The auxiliary support (3) is hot melt welded at the bottom of the fairing body (1).

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