Multi-directionally preformed braided part and three-dimension integrally braiding method thereof

A technology of integral weaving and knitting, which is applied in the direction of braiding, textiles and papermaking, etc. It can solve the problems of weak connection, distortion of heel knuckles, no consideration, etc., and achieve improved connection strength, uniform knuckles, and better connection performance Effect

Inactive Publication Date: 2009-11-25
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] (1) There is a spacer 13 between the main pipe 10 and the branch pipe 11 of the three-dimensional braided preformed braid, which causes the internal space of the main pipe 10 and the branch pipe 11 to be unable to communicate, so that this product cannot be used as a multi-way connection joint
[0015] (2) Among all the fiber bundles forming the branch pipe 11, half of the fiber bundles (such as 14, 17) come from the area other than the partition 13 of the main pipe 10, and the other half of the fiber bundles (such as 15, 16) come from the partition 13, and when the thickness of the main pipe and the branch pipe is similar, the connection between the spacer 13 and other parts of the ma

Method used

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  • Multi-directionally preformed braided part and three-dimension integrally braiding method thereof
  • Multi-directionally preformed braided part and three-dimension integrally braiding method thereof
  • Multi-directionally preformed braided part and three-dimension integrally braiding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example

[0074] The first embodiment:

[0075] A multi-directional preformed braid consisting of a rectangular flat plate 20 and a vertical intersecting circular tube 21 (see Figure 4 (Shown) is taken as an example to illustrate the three-dimensional integral weaving method of the multi-directional preformed braid provided by the present invention, including the following steps:

[0076] Step 1. Determine the forming direction and its sequence:

[0077] In this embodiment, the longitudinal direction of the rectangular flat plate 20 should be the first forming direction I, and the axial direction of the circular tube 21 should be the second forming direction II.

[0078] Step 2: Determine the position of the theoretical intersection 22:

[0079] The theoretical intersection is a closed curve, corresponding to the edge position of the intersection of the two components;

[0080] 1) According to the predetermined diameter and design position of the circular tube 21, calculate the position of...

Example

[0100] The second embodiment:

[0101] A multi-directional preformed braid consisting of a rectangular flat plate 30 and a circular tube 31 obliquely crossing (see Picture 11 (Shown) is taken as an example to illustrate the three-dimensional overall weaving method of the multi-directional preformed braid provided by the present invention. Since the second embodiment is very similar to the first embodiment, in order to save space, we will briefly describe the processing for the parts with little difference. The three-dimensional integral weaving method includes the following steps:

[0102] Step 1. Determine the forming direction and its sequence:

[0103] In this embodiment, the length direction of the rectangular flat plate 30 is still taken as the first forming direction I, and the axial direction of the round tube 31 is taken as the second forming direction II. The first forming direction may be the same as the round tube 31 on the rectangular plate 30. The direction of the or...

Example

[0114] The third embodiment:

[0115] A multi-directional preformed braid consisting of two oblique pipe bodies (see Figure 15 Shown) is taken as an example to illustrate the three-dimensional overall weaving method of the multi-directional preformed braid provided by the present invention, including the following steps:

[0116] Step 1. Determine the forming direction and its sequence:

[0117] In this embodiment, the two pipes have different diameters. The larger diameter is called the main pipe 40, and the smaller diameter is called the branch pipe 41. The length direction of the main pipe 40 should be the first forming direction I, and the axis of the branch pipe 41 The direction is the second molding direction II.

[0118] In addition, if the two pipes have the same diameter and size, the pipe that can extend outward at both ends is the main pipe, and the other is the branch pipe.

[0119] Step 2: Determine the position of the theoretical intersection 42:

[0120] In this em...

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Abstract

The invention discloses a multi-directionally preformed braided part, which comprises at least two components having different forming directions. Fiber bundles inside the braided part run through the components along different forming directions to form an integral structure. The intersection position of the components having different forming directions is provided with a through hole. The invention also provides a three-dimension integrally braiding method of the multi-directionally preformed braided part, which comprises: a step 1 of determining forming directions; a step 2 of determining a theoretical intersection position; a step 3 of determining a thread leading region and a thread adding region for theoretical intersection; a step 4 of braiding the first component, in which a fiber bundle passing the position of the thread leading region for theoretical intersection is led out and a leading-out end is left when the braiding reaches the position, and new fiber bundles prepared in advance are added to the position of the thread adding region for theoretical intersection and a preserved end is left when the braiding reaches the position; and a step 5 of changing braiding direction to braid the second components till the braiding of the second component is finished.

Description

technical field [0001] The invention relates to a braided piece and a weaving method, in particular to a multidirectional preformed braided piece and a weaving method thereof. Background technique [0002] At present, the three-dimensional weaving technology is mainly based on the four-step three-dimensional weaving process, which originates from the four-step three-dimensional weaving method described by R.A. Florentine in its patent (US 4312261). Based on it, people have made various improvements to the above method, but no matter how it is improved, there is generally only one forming direction of the workpiece. [0003] However, in real life, the desired product will have two or more weaving directions. For example, a rectangular cross-section corner product has two weaving directions; another example is a multi-directional preformed braid of a complex shape composite material support composed of two or more geometric bodies intersecting in space, with two or more the ...

Claims

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Application Information

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IPC IPC(8): D04C1/00
Inventor 刘振国阚玉华
Owner BEIHANG UNIV
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