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Manufacturing method of bicycle rim wound by carbon fiber prepreg tape

A carbon fiber prepreg and manufacturing method technology, which is applied in the manufacturing field of carbon fiber prepreg tape wound bicycle rims, can solve the problem that the overall structural strength of the finished rim is not high, the dimensional deformation of the finished rim varies greatly, and the overall molding operation is difficult. problems, to achieve the effect of shortening working hours and procedures, speeding up the production process, and high energy utilization

Active Publication Date: 2019-06-11
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for manufacturing a bicycle rim wrapped with carbon fiber prepreg tape, so as to solve the difficulty in the overall molding operation of forming a bicycle rim in the prior art, and the large difference in size and deformation of the finished rim, resulting in the failure of the finished product. The overall structural strength of the rim is not high

Method used

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  • Manufacturing method of bicycle rim wound by carbon fiber prepreg tape
  • Manufacturing method of bicycle rim wound by carbon fiber prepreg tape
  • Manufacturing method of bicycle rim wound by carbon fiber prepreg tape

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specific Embodiment approach 1

[0027] Specific implementation mode one: as Figure 1-Figure 5 As shown, this embodiment discloses a method for manufacturing a bicycle rim wrapped with carbon fiber prepreg tape. The carbon fiber prepreg tape wound bicycle rim has a two-layer structure, that is, from the inside to the outside, there are mandrel layer and carbon fiber Prepreg tape winding layer, the manufacturing method of described carbon fiber prepreg tape winding bicycle rim comprises:

[0028] Step A: Fill the mandrel 2 (an annular ring body) of thermoplastic material (such as thermoplastic rubber, TPU material or TPR material) with gas (such as air), and the pressure of the gas charged is 0.2Mpa (the amount of gas charged should be It can ensure that the carbon fiber prepreg tape 1 is stably wound on the surface of the mandrel 2), so that the carbon fiber prepreg tape 1 can stably cover the surface of the mandrel 2;

[0029] Step B: Wrap the carbon fiber prepreg tape 1 all over the surface of the mandrel...

specific Embodiment approach 2

[0035] Specific implementation mode two: as figure 1 , image 3 As shown, this embodiment is a further description of specific embodiment 1. In step A, the outer circumference of the section of the mandrel 2 perpendicular to its axis should be the same as the inner circumference of the finished bicycle rim 9. Same length (guarantees no wrinkling when squeezed and cured).

specific Embodiment approach 3

[0036] Specific implementation mode three: as figure 2 , Figure 4 As shown, this embodiment is a further description of specific embodiment 1. In step C, the rim mold 6 is made of metal material, and the rim mold 6 includes four equally divided arc rods 7, eight Nut 11 and four screw rods 5, each two ends of the inner circular arc surface of each described arc rod 10 are respectively welded with a nut 11, and described four equally divided arc rods 11 form a circle, each adjacent Two nuts 11 are internally screwed with a screw rod 5 .

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Abstract

The invention provides a manufacturing method of a bicycle rim wound by carbon fiber prepreg tape, and belongs to the technical field of bicycle manufacturing. The bicycle rim wound by the carbon fiber prepreg tape comprises an inner layer and an outer layer, wherein the inner layer is a core mold layer which is prepared from thermoplastic materials, the outer layer is a carbon fiber prepreg tapewinding layer which is formed by fully winding the surface of a core mold with the carbon fiber prepreg tape through annular container winding equipment, the core mold with the carbon fiber prepreg tape is placed on a rim mold and extruded by a shaping mold, meanwhile, air in the core mold is released, and finally the rim can be formed by heating and curing through an electromagnetic induction heating device. The surface of the core mold can be evenly and fully wound with the carbon fiber prepreg tape through the annular container winding equipment, and thus the strength of carbon fibers can be fully utilized, and the manufactured rim is more stable in quality. The bicycle rim can be formed at a time through integral forming equipment, and production efficiency is high. The finished rim ismore stable in structure, and the toughness and structure strength of the rim are improved.

Description

technical field [0001] The invention belongs to the technical field of bicycle manufacturing, in particular to a method for manufacturing a carbon fiber prepreg tape wrapped around a bicycle rim. Background technique [0002] At present, with the continuous improvement of people's living standards, the demand for high-end bicycles is increasing, and cycling is becoming more and more popular. People are beginning to pursue lighter and lighter riding tools. Quantified bicycles. At present, the trend of "carbon fiberization" of high-end bicycles is becoming more and more obvious. In the prior art, such as a carbon fiber rim manufacturing method disclosed in Taiwan Patent I327533 of China, the prepared carbon fiber The material is soaked in resin, and then the resin-impregnated carbon fiber material is put into the rim mold, and the rim is formed after hot pressing. This method first requires a large amount of resin to infiltrate the carbon fiber material, and the shape of the ...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/54B29C35/08
Inventor 许家忠于天成尤波刘美军付天宇古云飞
Owner HARBIN UNIV OF SCI & TECH
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