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Carbon fiber composite material spring and manufacturing method thereof

A composite material and carbon fiber technology, applied in the direction of springs/shock absorbers, leaf springs, mechanical equipment, etc., can solve the problems of waste of materials, time-consuming, small deformation of springs, etc., and achieve the effect of less waste and low cost

Inactive Publication Date: 2015-06-10
广西安捷讯电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the performance of the carbon fiber composite spring is deeply affected by its structure. Since the carbon fiber itself is relatively soft, bending a bundle of carbon fiber bundles will not generate enough tension to provide resilience to the helical or leaf-shaped spring, and it is made into a conventional helical or leaf-shaped spring. Carbon fiber composite material springs have worse load-bearing capacity than metal springs of the same shape, so carbon fiber composite material springs face some challenges, such as poor elasticity, fragility, and high anisotropy, which are inherently unsuitable for springs. Therefore, it is known that the spring made of carbon fiber composite material has small deformation, low elastic coefficient, and small load. Using the unique high tensile strength of carbon fiber composite material, the spring structure must be specially designed and tested to achieve large load capacity.
In addition, at present, various shapes of carbon fiber composite parts are mainly made by vacuum pumping process and hot pressing process. The vacuum and hot pressing process uses vacuum pressure to fix the carbon fiber composite material impregnated with epoxy resin in the mold. Curing at high temperature, this process is complicated, labor-intensive, time-consuming, requires large capital investment in equipment, and serious waste of materials, so the cost of carbon fiber composite parts produced is high. These expensive processes limit the application range of carbon fiber composite materials

Method used

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  • Carbon fiber composite material spring and manufacturing method thereof
  • Carbon fiber composite material spring and manufacturing method thereof
  • Carbon fiber composite material spring and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: carbon fiber composite spring shoes

[0037]Due to the poor shock-absorbing ability of current shoes, it is not enough to prevent the damage caused by the hard ground facing the human body during continuous walking or weight-bearing activities. When walking, the weight of the entire body is transferred to a single foot, and the reaction force of the ground on the single foot reaches about 3 times the body weight. When running, the reaction force can reach 8 times the body weight. This force is transmitted upward to the bones Sometimes it is harmful to people, such as athletes, soldiers, workers, nurses, overweight people or the elderly, walking on hard roads for a long time will cause ankle shaking, knee pain, back pain, muscle fatigue, and even in some case, the tibia is fractured. In addition, current shoes cannot significantly reduce ground impact forces, which can cause muscle fatigue and reduce endurance during continuous exercise. This is because th...

Embodiment 2

[0045] Example 2: Carbon Fiber Composite Material Spring Liner Helmet

[0046] Helmets are effective in preventing skull fractures, but they are still insufficient in preventing brain injuries such as concussions. Studies show that more than 1,000,000 Americans experience concussions each year during activities as diverse as sports, driving, and construction. Traumatic brain injury can lead to severe, permanent disability or death. The deformable polymer foam currently used in helmets is too thin to prevent strong shock forces from hitting brain tissue. Concussion occurs when the soft tissue in the brain shakes when it encounters a sudden external force. Increasing the thickness of the foam will make the helmet larger and increase the weight of the helmet. It is inconvenient to wear and the comfort is also affected, so this solution is unrealistic . In addition, because the external pressure or load keeps the foam material in an irreversible state for a long time, the cush...

Embodiment 3

[0049] Example 3: Carbon Fiber Composite Material Spring Seat Cushion Chair

[0050] The carbon fiber composite material spring cushion chair can reduce the thickness and weight of the aircraft seat, which is beneficial to adding more seats and reducing the weight of the aircraft. For commercial aircraft, every pound saved can save $500 worth of fuel. However, aircraft seats must meet strict FAA (Federal Aeronautics and Space Administration) strength requirements, be able to withstand 16 times the force of gravity, and pass crash tests, which is a challenge for carbon fiber composite springs.

[0051] in reference Figure 10 Among them, the seat is equipped with carbon fiber composite material springs to form the seat structure 310, 320, 330, 340 to meet different elastic requirements. Carbon fiber composites have the disadvantage of being brittle, although they are strong they are prone to cracking under heavy impact. When designing the seat, the carbon fiber composite mat...

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Abstract

The invention discloses a carbon fiber composite material spring and a manufacturing method thereof. The carbon fiber composite material spring comprises at least one elastic piece, wherein each elastic piece comprises an arc-shaped part and a straight part; the elastic pieces are connected with one another through the arc-shaped parts or the straight parts. The manufacturing method comprises the following steps: putting a carbon fiber composite material into a spring mold cavity of a lower mold, spreading the carbon fiber composite material along a curved surface, pressing the upper mold to the carbon fiber composite material, simultaneously heating an upper mold and the lower mold at the temperature being greater than 600 DEG C, cooling, curing the carbon fiber composite material and demolding, wherein the lower mold is a hard mold which is made of metal, and the upper mold is a soft silicon rubber mold which is prepared by putting a silicon rubber material into a mold, molding and curing. The carbon fiber composite material spring is relatively large in deformation, high in elastic coefficient and large in load property, and the manufacturing method is low in cost, rapid to operate and small in material waste.

Description

technical field [0001] The invention relates to an elastic body, in particular to a carbon fiber composite material spring and a manufacturing method thereof. Background technique [0002] Springs or spring-like elastomers are traditionally made of metal, but some places need to use lighter springs, such as aerospace and automotive fields, which can improve fuel efficiency by reducing the weight of equipment, such as helmets and shoes, Stronger cushioning pads are available for added protection and comfort, and the ability to reduce the weight of the springs will bring unprecedented benefits to these applications. [0003] Carbon fiber composite material is a reinforced composite material composed of matrix and carbon fiber with a multi-layer structure. Its specific modulus can be 5 times higher than that of steel and aluminum alloy, and its specific strength can be 3 times higher than that of steel and aluminum alloy. But the specific gravity is very small, and the weight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29C33/38F16F1/368
Inventor 赵京
Owner 广西安捷讯电子科技有限公司
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