Large-size and thickness-changing revolved body precast body and manufacturing method thereof

A technology of variable thickness and preform, applied in the direction of fabric, textile, textile and paper making, to achieve the effect of continuous manufacturing, high efficiency and unlimited diameter

Active Publication Date: 2018-05-08
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the above-mentioned limitations in the prior art, it is currently impossible to use a three-dimensional layered structure fabric to manufacture a large-scale prefabricated body with a diameter exceeding 500 mm and a thickness that changes continuously along the axial direction, which limits the use of a three-dimensional layered structure fabric as a reinforcement. Application on large size parts

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Large-size and thickness-changing revolved body precast body and manufacturing method thereof
  • Large-size and thickness-changing revolved body precast body and manufacturing method thereof
  • Large-size and thickness-changing revolved body precast body and manufacturing method thereof

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preparation example Construction

[0041] The specific preparation method of the above-mentioned large-size variable-thickness revolving body prefabricated body 10 is described below, and the following steps are adopted:

[0042] (1) Determine the dimensional parameters of the variable-thickness revolving body prefabricated body 10 to be produced;

[0043] (2) Determine the number of uniform layers of the variable-thickness revolving body prefabricated body 10 to be produced, which is divided into 5 layers in this embodiment, and determine the size of the variable-thickness revolving body prefabricated body 20 based on the size parameters of the variable-thickness revolving body prefabricated body 10 parameter;

[0044] (3) Weaving variable thickness prefabricated body 20 on the two-dimensional loom and finishing;

[0045] (4) See Figure 8 , the variable-thickness preform 20 is continuously wound on the rotary mandrel 30 to obtain the variable-thickness rotary preform 10 .

[0046] In this embodiment, when ...

Embodiment 2

[0055] This embodiment is basically the same as Embodiment 1, the difference lies in the thickness variation method of the variable thickness preform 20 .

[0056] In this embodiment, the method for changing the thickness of the variable-thickness preform 20 is specifically a method for changing the number of layers of warp yarns. An exemplary description is given below.

[0057] The variable-thickness preform 20 of this embodiment is a shallow cross-bending layered structure, and the method of changing the number of warp layers refers to changing the number of warp layers along the weft direction as the thickness of the variable-thickness preform changes. see Figure 6 , Figure 6 It is a partial weaving schematic diagram of the method of variable warp yarn layers. Along the extension direction of arrow F2, the thickness of the variable thickness preform becomes thicker continuously. As the thickness increases, the number of layers of warp yarn S3 increases. Figure 6 , ex...

Embodiment 3

[0062] This embodiment is basically the same as Embodiment 1, the difference lies in the thickness variation method of the variable thickness preform 20 .

[0063] In this embodiment, the method of changing the thickness of the variable-thickness preform 20 is specifically a method of combining warp yarn specification and warp yarn layer number. An exemplary description is given below.

[0064] The variable thickness preform 20 of this embodiment is a shallow cross-bending layered structure, and the method of combining the variable warp specification and the variable warp layer refers to changing the thickness of the variable thickness preform while changing the warp specification along the weft direction. Vary the number of warp layers. see Figure 7 , Figure 7 It is a partial weaving schematic diagram of the method of combining variable warp yarn specifications and variable warp yarn layers. Along the extension direction of arrow F3, the thickness of the variable thickne...

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Abstract

The invention discloses a large-size and thickness-changing revolved body precast body. The wall thicknesses of the large-size and thickness-changing revolved body precast body change continuously inthe axial direction, the thickness-changing revolved body precast body is formed by winding multiple layers of a thickness-changing precast body which is three-dimensional laminated structural fabric,and the weft direction of the thickness-changing precast body and the central axis of the thickness-changing revolved body precast body are located in the same plane. The invention further disclosesa manufacturing method of the revolved body precast body. The method comprises the steps of 1, determining size parameters of the thickness-changing revolved body precast body to be produced; 2, determining even layering number of the thickness-changing revolved body precast body to be produced, and determining size parameters of the thickness-changing precast body according to the size parametersof the thickness-changing revolved body precast body; 3, weaving the thickness-changing precast body on a weaving machine and completing weaving; 4, winding the thickness-changing precast body on a revolved body core mould continuously to obtain the thickness-changing revolved body precast body. The large-size and thickness-changing revolved body precast body and the manufacturing method thereofhave the advantages that manufacturing is continuous, efficiency is high, and the diameter of the thickness-changing revolved body is not limited.

Description

technical field [0001] The invention relates to a prefabricated body of a large-scale variable-thickness revolving body and a preparation method thereof, belonging to the field of three-dimensional braided prefabricated bodies. Background technique [0002] The application of high-performance fiber-reinforced composite materials in the aerospace and national defense fields has attracted more and more attention. The prefabricated body of revolution is a reinforcement commonly used in high-performance fiber-reinforced composite materials, and three-dimensional integral weaving (such as the method disclosed in CN106400295 A) and circular three-dimensional weaving methods (such as the method disclosed in CN 101811365 A) are usually used to prepare the revolution body Prefabricated body, but these methods are limited by the size of the loom, and are limited to the preparation of small-sized prefabricated bodies. Usually, the diameter is limited to within 500mm, and a large number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D25/00
CPCD03D25/005
Inventor 赵谦周海丽张立泉李超郭洪伟
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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