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A kind of hollow box-shaped reinforcement and preparation method thereof, and preparation method of hollow box

A reinforcement and hollow technology, applied in textiles, papermaking, textiles, fabrics, etc., can solve the problems of low rigidity of hollow box-shaped structural parts, scattered box top and box body, poor mechanical properties, etc.

Active Publication Date: 2022-07-12
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is that the box top and box body of the existing hollow box-shaped reinforcement are prone to fall apart. Hollow box-shaped structural parts have low stiffness and poor mechanical properties

Method used

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  • A kind of hollow box-shaped reinforcement and preparation method thereof, and preparation method of hollow box
  • A kind of hollow box-shaped reinforcement and preparation method thereof, and preparation method of hollow box
  • A kind of hollow box-shaped reinforcement and preparation method thereof, and preparation method of hollow box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] This embodiment provides a hollow box-shaped reinforcement, such as figure 1 As shown, it includes an integrally woven box bottom and an integrally woven box body; the box body includes a box top 11, two side walls 12 that are bent and extended downward from both sides of the box top 11, and the bottom of any side wall 12. The first connecting portion 13 bent outward from the top, the first connecting portion 13 is laminated and connected to the bottom of the box, and the second connecting portion woven with the first connecting portion 13 on the bottom of any side wall 12 in layers 14. The second connecting part 14 is bent inward, and the second connecting part 14 is in contact with the surface of the bottom of the box, with the side wall 12 of the box as the boundary, the first connecting part 13 and the second connecting part 14 are located at the bottom of the box. On both sides of the side wall 12, the end faces of the ends of the two second connecting parts 14 tha...

Embodiment 2

[0111] This embodiment provides a hollow box-shaped reinforcement, which is different from the hollow box-shaped reinforcement of Embodiment 1 in that:

[0112] like figure 1 As shown, the bottom of the hollow channel in Embodiment 1 is a plane; while the bottom of the hollow channel in this embodiment is a groove 24, such as image 3 As shown, the shape of the hollow channel mainly depends on the shape of the middle mold, the bottom mold and the top mold.

[0113] Therefore, when the bottom of the hollow channel is the groove 24, the preparation method of the corresponding hollow box-shaped reinforcement is compared with the preparation method of the hollow box-shaped reinforcement in Example 1. The difference is:

[0114] S10 (opening the mold): the surface of the top mold of the prepared bottom mold is concave;

[0115] In the step S30 (stacking), when the box bottom preform is stacked on the top surface of the bottom mold, the bottom surface of the box bottom preform is ...

Embodiment 3

[0120] This embodiment provides a hollow box-shaped reinforcement, which is different from the hollow box-shaped reinforcement of Embodiment 1 in that:

[0121] The tail of the box bottom is not provided with a ladder, but the tail of the box top 11 is provided with a ladder, which can also make the middle of the tail of the box bottom and the middle of the tail of the top 11 abut through the ladder, so that the tail of the bottom of the box can be connected to the bottom of the box. When the tail of the box top 11 is attached and connected, the closed end 3 is formed.

[0122] Correspondingly, the difference between the preparation method of this hollow box-shaped reinforcement and the preparation method of Example 1 is:

[0123] In the weaving step of the box bottom preform 20, the multi-layer warp yarns and the multi-layer weft yarns are interwoven layer by layer to form a flat box bottom preform 20;

[0124] Before the weaving step of the box body preform 10, the preset h...

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Abstract

The invention discloses a hollow box-shaped reinforcement, a preparation method thereof, and a preparation method of the hollow box. The hollow box preform comprises an integrally woven box bottom and an integrally woven box body; The two side walls that are bent and extended on both sides and the first connecting portion of the bottom of any side wall that is bent outward, the first connecting portion is laminated and connected to the bottom of the box; the box body and the box A hollow channel is enclosed between the bottoms. Because the box body and the box bottom are integrally woven, the box body forms the box top, the two side walls of the box, and the first connecting part, and the side walls of the box will not be scattered; The first surface is attached and connected; the hollow box-shaped reinforcement is injected into the matrix and then cured and formed, and the side wall of the box is integrated to improve the strength of the side wall of the box; the first surface is attached to the connecting surface and connected, thereby making the box body A surface connection is formed with the bottom of the box to improve the strength and mechanical properties of the hollow box.

Description

technical field [0001] The invention belongs to the general technical field of weaving and manufacturing fiber reinforced structures, and in particular relates to a hollow box-shaped reinforcement and a preparation method thereof, and a preparation method of a hollow box. Background technique [0002] At present, the preparation of high-strength and high-modulus structural parts is mostly made of composite materials. Generally, a fiber preform is prepared by a weaving method, and then an injection molding matrix is ​​used to densify the fiber preform to obtain a composite structure. For example, the fibers can be glass fibers, carbon fibers or ceramic fibers, and the matrix can be a resin material. [0003] For example, Chinese patent document CN104395515B discloses a method for preparing a hollow box-shaped structural member, wherein the cross-section of the hollow box-shaped structural member is an inverted π type, and the tops of the two side walls of the inverted π are c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D25/00
CPCD03D25/005
Inventor 刘志艳李超周海丽王祯鑫孙方方黄天麟张立泉
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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