Forming die for upper tube and lower tube of carbon fiber bicycle

Abstract

The utility model discloses a forming die for an upper tube and a lower tube of a carbon fiber bicycle, which specifically comprises an upper die, a lower die and side sliding blocks arranged on two sides of the upper die and the lower die, and aims at products with sharp-corner shapes on the left side and the right side of the upper tube and the lower tube of the carbon fiber bicycle. According to the structure of the forming die, an original parting line in the center of a product is adjusted into two parting lines at the sharp corner modeling positions on the two sides of the upper pipe and the lower pipe, the parting lines beneficial to discharge of micromolecule gas and flowing of resin are reserved at the sharp corner positions where glue accumulation, shape missing and foaming are prone to occurring, and the undesirable phenomena are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material forming, in particular to a forming die for the upper and lower tubes of a carbon fiber bicycle. Background Art

[0002] The traditional die structure of the upper and lower tubes of the front triangle of a carbon fiber bicycle is an overall upper and lower die design (such as Figure 1 ), when encountering an undercut or special shape, side sliders are designed to cooperate. The shapes of the upper and lower tubes of a carbon fiber bicycle are regular without undercuts, generally a conventional upper die 1 is a whole piece, a lower die 2 is a whole piece, and the mold joint line is in the middle of the product (such as Figure 1 ).

[0003] The design of the above-mentioned die has no adverse effects when the shapes of the upper and lower tubes are circular or have large arcs, but when encountering sharp corner shapes on both sides of the upper and lower tubes, problems such as resin accumulation, shape defects or blisters are caused due to the inability to exhaust the volatilized gas in the carbon fiber composite material, seriously affecting the appearance and strength of the product.

[0004] Therefore, we improve the existing forming die for the upper and lower tubes of a carbon fiber bicycle to avoid unnecessary resin accumulation, shape defects and blisters when forming sharp corner shapes on both sides of the upper and lower tubes. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a forming die for the upper and lower tubes of a carbon fiber bicycle, which can solve the problems of resin accumulation, shape defects or blisters of carbon fiber bicycle products with sharp corner shapes on both sides of the upper and lower tubes, aiming at the deficiencies of the prior art.

[0006] The technical problem to be solved by the utility model is realized through the following technical solution. A forming die for the upper and lower tubes of a carbon fiber bicycle includes an upper die and a lower die, and a carbon fiber bicycle upper and lower tube cavity that forms an upper and lower tube structure after mold closing is arranged in the upper die and the lower die;

[0007] Side sliders are detachably arranged on both sides of the parting surface of the upper die and the lower die, and grooves that can form sharp edges after mold closing are arranged on one side surface of the side sliders facing the carbon fiber bicycle upper and lower tube cavity.

[0008] The technical problem to be solved by the utility model can also be realized through the following technical solution. For the above-mentioned forming die for the upper and lower tubes of a carbon fiber bicycle, an installation groove for accommodating the side slider is arranged at the edge of the parting surface of the upper die and the lower die.

[0009] The technical problem to be solved by the utility model can also be realized through the following technical solution. For the above-mentioned forming die for the upper and lower tubes of a carbon fiber bicycle, the side slider is parallel to the side of the upper die or the lower die.

[0010] The technical problem to be solved by the present utility model can also be achieved through the following technical solutions. For a forming mold of the upper and lower tubes of a carbon fiber bicycle as described above, the side slider is detachably installed on the side edges of the upper mold and the lower mold through bolt fasteners.

[0011] Compared with the prior art, the beneficial technical effects of the present utility model are as follows: When the left and right sides of the upper and lower tubes of the carbon fiber bicycle to be formed have sharp corner shapes, by arranging side sliders at the edge of the parting surface of the upper mold and the lower mold, during the forming process, the resin and small molecule gases in the prepreg can be discharged through the mold closing part of the upper mold, the lower mold and the side sliders, thereby avoiding the phenomena of glue accumulation, shape defect or foaming in the upper mold and the lower mold, and its structural design is reasonable. Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of a traditional mold for the upper and lower tubes of a carbon fiber bicycle;

[0013] Figure 2 It is an exploded structural schematic diagram of the forming mold of the upper and lower tubes of the carbon fiber bicycle of the present utility model;

[0014] Figure 3 It is a structural schematic diagram of the upper and lower tubes of a carbon fiber bicycle with sharp corner shapes on the left and right sides.

[0015] Reference Signs:

[0016] 1. Upper mold; 2. Lower mold; 3. Cavity of the upper and lower tubes of the carbon fiber bicycle; 4. Side slider; 5. Groove; 6. Installation groove; 7. Sharp corner shape. Detailed Embodiments

[0017] The following further describes the specific technical solutions of the present utility model with reference to the drawings, so as to facilitate those skilled in the art to further understand the present utility model without restricting its rights.

[0018] Example 1, referring to Figures 1-3 , a forming mold for the upper and lower tubes of a carbon fiber bicycle, including an upper mold 1 and a lower mold 2. Both the upper mold 1 and the lower mold 2 are formed into a generally Y-shaped structure. A cavity 3 of the upper and lower tubes of the carbon fiber bicycle that forms an upper and lower tube structure after mold closing is provided in the upper mold 1 and the lower mold 2;

[0019] Side sliders 4 are detachably provided on both sides of the edge of the parting surface of the upper mold 1 and the lower mold 2. A groove 5 that can form a sharp edge after mold closing is formed on one side surface of the side slider 4 facing the cavity 3 of the upper and lower tubes of the carbon fiber bicycle. The shape of the groove 5 corresponds to the structure of the inner walls of the upper mold 1 and the lower mold 2 and the sharp corner shapes 7 on the left and right sides of the upper and lower tubes of the carbon fiber bicycle. The side slider 4 is parallel to the side edge of the upper mold 1 or the lower mold 2;

[0020] An installation groove 6 for accommodating the side slider 4 is provided at the edge of the parting surface between the upper die 1 and the lower die 2. The shape of the installation groove 6 corresponds to the shape of the side slider 4, and the shape of the side slider 4 can be customized according to the upper die 1, the lower die 2 and the structure of the upper and lower tubes of the carbon fiber bicycle.

[0021] The said side slider 4 is detachably installed on the sides of the upper die 1 and the lower die 2 through bolt fasteners, and can also be detachably fixed through structures such as pins. Its installation and fixing methods are not limited to this.

[0022] When the forming die for the upper and lower tubes of the carbon fiber bicycle is actually used, the carbon fiber prepreg is placed into the forming cavity of the die, that is, the cavity 3 for the upper and lower tubes of the carbon fiber bicycle. Then, the side slider 4 is installed, and finally the upper die 1 and the lower die 2 are closed.

[0023] During the forming process, due to the structure of the forming die, a parting line originally at the center of the product is adjusted to two parting lines at the sharp corners 7 on both sides of the upper and lower tubes, so that the resin and small molecule gases in the prepreg are discharged through the closing lines of the upper die 1 and the lower die 2 and the closing line of the side slider 4, improving the forming quality of the product. Especially for the shape with sharp corners on both sides of the upper and lower tubes of the carbon fiber bicycle (refer to Figure 3 ), problems such as resin deposition and lack of shape caused by the inability to discharge resin and gas can be solved.

[0024] In addition, it should be noted that the materials of the upper die 1, the lower die 2 and the side slider 4 can be die steel, aluminum alloy, composite materials, etc., or other materials, which are not limited to this.

[0025] Moreover, this forming die is not only applicable to the sharp corner shapes 7 on the left and right sides of the upper and lower tubes of the carbon fiber bicycle. When the groove 5 is designed as an arc groove 5, it is also applicable to ordinary round tubes or shapes with large arcs.

Claims

1. A forming die for the upper and lower tubes of a carbon fiber bicycle, characterized in that: It includes an upper mold and a lower mold, and a carbon fiber bicycle upper and lower tube cavity that forms an upper and lower tube structure after mold clamping is arranged inside the upper mold and the lower mold; Side sliders are detachably arranged on both sides of the parting surface of the upper mold and the lower mold, and grooves that can form sharp edges after mold clamping are formed on one side of the side sliders facing the carbon fiber bicycle upper and lower tube cavity.

2. The forming die for the upper and lower tubes of a carbon fiber bicycle according to claim 1, characterized in that: Installation grooves for accommodating the side sliders are arranged at the edges of the parting surface of the upper mold and the lower mold.

3. The forming die for the upper and lower tubes of a carbon fiber bicycle according to claim 1, characterized in that: The side sliders are parallel to the sides of the upper mold or the lower mold.

4. A forming die for the upper and lower tubes of a carbon fiber bicycle according to claim 1, characterized in that: The side sliders are detachably installed on the sides of the upper mold and the lower mold through bolt fasteners.

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