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Molding device and molding method for T-shaped composite material stringer blank

A composite material and forming tooling technology, applied in the field of composite material forming, can solve the problems of low lay-up efficiency, folds and inclusions at rounded corners, etc., and achieve the effect of improving lay-up efficiency and ensuring quality and accuracy

Active Publication Date: 2014-07-30
AVIC COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above-mentioned traditional method are: 1. Since the lay-up mold is a right-angle shape, the prepreg in the vertical part is not easy to stick to the mold surface during lay-up, and the lay-up efficiency is low; 2. Wrinkles, inclusions and The phenomenon of air trapping affects product quality; 3. Repositioning is required when the left and right stacking molds are combined, and the accuracy is not easy to guarantee

Method used

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  • Molding device and molding method for T-shaped composite material stringer blank
  • Molding device and molding method for T-shaped composite material stringer blank
  • Molding device and molding method for T-shaped composite material stringer blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The T-shaped composite truss blank to be made is composed of a web and flanges on both sides. The inner end of the flange is connected to the upper end of the web as a whole. There is a triangular gap at the intersection of the sides, the thickness of the web] is 4mm, the thickness of the flange is 2mm, and the radius of the transition arc between the left side of the web and the lower surface of the flange on the left is 3mm. The radius of the transition arc between the right side of the web and the lower surface of the flange on the right is 3 mm; the height of the web is 40 mm, the wide width of the single flange is 20 mm, and the length is 1000 mm.

[0028] The forming tooling of the T-shaped composite truss blank is composed of a bottom mold and an upper mold; the bottom mold is composed of a platform, a left mold, a right mold, a left pressure plate, a left bolt, a right pressure plate, a right bolt, a stopper and a pressure bolt. ;The left mold and the right mold...

Embodiment 2

[0037] The T-shaped composite truss blank to be made is composed of a web and flanges on both sides. The inner end of the flange is connected to the upper end of the web as a whole. There is a triangular gap at the intersection of the sides, the thickness of the web] is 6mm, the thickness of the flanging is 3mm, and the radius of the transition arc between the left side of the web and the lower surface of the flanging on the left is 5mm. The radius of the transition arc between the right side of the web and the lower surface of the flange on the right is 5 mm; the height of the web is 50 mm, the wide width of the single flange is 30 mm, and the length is 1000 mm.

[0038] The forming tooling of the T-shaped composite truss blank is composed of a bottom mold and an upper mold; the bottom mold is composed of a platform, a left mold, a right mold, a left pressure plate, a left bolt, a right pressure plate, a right bolt, a stopper and a pressure bolt. ;The left mold and the right ...

Embodiment 3

[0047]The T-shaped composite truss blank to be made is composed of a web and flanges on both sides. The inner end of the flange is connected to the upper end of the web as a whole. There is a triangular gap at the intersection of the sides, the thickness of the web] is 10mm, the thickness of the flange is 5mm, and the radius of the transition arc between the left side of the web and the lower surface of the flange on the left is 5mm. The radius of the transition arc between the right side of the web and the lower surface of the flange on the right is 5 mm; the height of the web is 50 mm, the wide width of the single flange is 30 mm, and the length is 2000 mm.

[0048] The forming tooling of the T-shaped composite truss blank is composed of a bottom mold and an upper mold; the bottom mold is composed of a platform, a left mold, a right mold, a left pressure plate, a left bolt, a right pressure plate, a right bolt, a stopper and a pressure bolt. ;The left mold and the right mold...

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Abstract

The invention belongs to the composite material molding technology, and relates to improvement on a molding device and a molding method for a composite material stringer blank. The molding device disclosed by the invention comprises a bottom die and an upper die 10; the bottom die comprises a platform 1, a left side die 2, a right side die 3, a left pressure plate 4, a left bolt 5, a right pressure plate 6, a right bolt 7, a baffle block 8 and a pressurization bolt 9. The molding steps are as follows: laying a rectangular prepreg flat blank 11; determining a spacing W1 between the left side die 2 and the right side die 3; assembling; pressurizing; opening the die; and molding a web. The invention provides an improved molding device and molding method for the composite material stringer blank, the laying efficiency is improved, and the quality and accuracy of products can be ensured.

Description

technical field [0001] The invention belongs to the molding technology of composite materials, and relates to the improvement of a molding device and a molding method for long stringer rough blanks of composite materials. Background technique [0002] The traditional forming method of the T-shaped composite long stringer rough is to adopt manual method to lay layer by layer on the mould. The specific method is to divide the T-shaped stringer from the central line of symmetry. When laying up, first prepare the layup molds on the left and right sides. The surface of the layup mold is a shape with inflection, and then lay the single-layer prepreg on the mold. When laying up, it is necessary to ensure that: first, the first layer is closely attached to the mold, and each subsequent layer must be attached to the previous layer; second, each layer of prepreg is closely attached without entrapped air bubbles , Third, the layup is flat, especially the rounded corners should not ha...

Claims

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Application Information

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IPC IPC(8): B29C70/54B29C70/34
CPCB29C70/345
Inventor 薛向晨田宏伟梁宪珠谢富原
Owner AVIC COMPOSITES
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