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Forming method capable of improving dimensional precision of carbon fiber filling core material

A molding method and dimensional accuracy technology, which is applied in the field of automatic composite material manufacturing, can solve problems such as excessive use of tooling and molds, affect manufacturing efficiency, and complex processing technology, and achieve improved compactness, smooth surface quality, and reduced porosity. Effect

Pending Publication Date: 2021-03-09
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tooling molds are used more and the processing technology is complicated, which affects manufacturing efficiency

Method used

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  • Forming method capable of improving dimensional precision of carbon fiber filling core material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] see figure 1 , a method for improving the dimensional accuracy of a carbon fiber filled core material, comprising the following steps:

[0045] a. Material clamping, select prepreg, and clamp the prepreg on the carbon fiber filled core material automatic forming equipment; transfer the remaining material and backing paper to the rotary mechanism for the remaining material of the lining paper, and transfer the lining film to the In the rotary mechanism of the lining film, the other end of the material is clamped by a chuck to form a traction state;

[0046]b. Cutting size setting, calculate the cross-sectional area of ​​the carbon fiber-filled core material according to the length L, height H and radius of the carbon fiber-filled core material; then calculate the single-layer pre-preparation required for the carbon fiber-filled core material according to the cross-sectional area and material thickness h Dip material width W, and then set the cutting size with the width ...

Embodiment 2

[0053] see figure 1 , a method for improving the dimensional accuracy of a carbon fiber filled core material, comprising the following steps:

[0054] a. Material clamping, select prepreg, and clamp the prepreg on the carbon fiber filled core material automatic forming equipment; transfer the remaining material and backing paper to the rotary mechanism for the remaining material of the lining paper, and transfer the lining film to the In the rotary mechanism of the lining film, the other end of the material is clamped by a chuck to form a traction state;

[0055] b. Cutting size setting, calculate the cross-sectional area of ​​the carbon fiber-filled core material according to the length L, height H and radius of the carbon fiber-filled core material; then calculate the single-layer pre-preparation required for the carbon fiber-filled core material according to the cross-sectional area and material thickness h Dip material width W, and then set the cutting size with the width...

Embodiment 3

[0063] see figure 1 , a method for improving the dimensional accuracy of a carbon fiber filled core material, comprising the following steps:

[0064] a. Material clamping, select prepreg, and clamp the prepreg on the carbon fiber filled core material automatic forming equipment; transfer the remaining material and backing paper to the rotary mechanism for the remaining material of the lining paper, and transfer the lining film to the In the rotary mechanism of the lining film, the other end of the material is clamped by a chuck to form a traction state;

[0065] b. Cutting size setting, calculate the cross-sectional area of ​​the carbon fiber-filled core material according to the length L, height H and radius of the carbon fiber-filled core material; then calculate the single-layer pre-preparation required for the carbon fiber-filled core material according to the cross-sectional area and material thickness h Dip material width W, and then set the cutting size with the width...

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Abstract

The invention discloses a forming method capable of improving the dimensional precision of a carbon fiber filling core material, and belongs to the technical field of automatic manufacturing for composite materials. The forming method capable of improving the dimensional precision of the carbon fiber filling core material is characterized by comprising the following steps: a, clamping a material;b, setting a slitting size; c, setting a preheating temperature, namely setting a heating temperature through a drying oven in a heating area, preheating and softening the material, setting the preheating temperature to be 60 DEG C if a prepreg is medium-low-temperature thermosetting resin, and setting the preheating temperature of the prepreg to be 80 DEG C if the prepreg is high-temperature thermosetting resin; d, setting a traction rate; e, forming the carbon fiber filling core material; and f, cutting the carbon fiber filling core material. According to the invention, a tool die can be effectively utilized, the number of used tool dies is reduced, the manufacturing process is simplified, the manufacturing efficiency is increased, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of automatic manufacturing of composite materials, in particular to a molding method for improving the dimensional accuracy of carbon fiber filled core materials. Background technique [0002] Carbon fiber filled core material is a kind of filling material used to fill the triangular voids of composite material reinforced structures. The existence of triangular voids will lead to a decrease in the mechanical properties of composite components. In the manufacturing process of composite components in aviation enterprises, unidirectional Carbon fiber prepregs are added with a certain amount of resin and adhesive film to prepare carbon fiber filled core materials, and then filled into the triangular voids of composite components to enhance the mechanical properties of composite components. Carbon fiber filled core material is an indispensable preform for the manufacture of reinforced wall panel parts. Its produc...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/44B29C70/54
CPCB29C70/342B29C70/443B29C70/54
Inventor 黄当明张龙傅念清杨龙英罗维
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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