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A forming device and forming method for a tubular three-dimensional braided composite material product

A composite material, three-dimensional weaving technology, applied in the field of matching molding devices, can solve the problems of low production efficiency, complicated molding process, single function, etc., and achieve the effects of convenient operation, simple structure and improved production efficiency

Active Publication Date: 2019-03-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It effectively avoids the problems of cumbersome molding process, single function and low production efficiency of traditional metal or wooden mandrels

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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  • A forming device and forming method for a tubular three-dimensional braided composite material product

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The circular tubular three-dimensional braided composite product molding device of the present invention is used in conjunction with a three-dimensional braiding machine to prepare a uniform circular tubular three-dimensional braided fabric composite product. First, a certain volume of compressed air is poured into the flexible mandrel 1 to ensure that the mandrel 1 The pressure is about 3MPa. After the air pressure reaches the requirement, the inflation port of the mandrel 1 is sealed firmly, and then a retractable demoulding device 3 is installed on the outer surface of the flexible inflatable mandrel 1, and the demoulding device 3 is coated on the surface of the inflated mandrel 1, and The retractable spring belt is adjusted by the locking knob so that it is closely adhered to the surface of the flexible mandrel 1, and the flexible mandrel 1 and the retractable spring belt are integrated. After the above device is assembled, put it on the three-dimensional braiding m...

Embodiment 2

[0039] Using the square tubular three-dimensional braided composite product forming device of the present invention in conjunction with a three-dimensional braiding machine to prepare a uniform square tubular three-dimensional braided fabric composite product, first pour a certain volume of water into the flexible mandrel 1 to ensure the mandrel 1. The pressure is about 2MPa. After the water pressure meets the requirements, the water filling port of the mandrel 1 is sealed firmly, and then a retractable demoulding device 3 is installed on the outer surface of the flexible water-filled mandrel 1, and the demoulding device 3 is coated on the water-filled mandrel 1 surface, and adjust the retractable spring belt by locking the knob to make it closely adhere to the surface of the flexible mandrel 1, and form a whole with the flexible mandrel 1 and the retractable spring belt. After the above device is assembled, put it on the three-dimensional braiding machine to weave the square ...

Embodiment 3

[0041] The elliptical tubular three-dimensional braided composite product molding device of the present invention is used in conjunction with a three-dimensional braiding machine to prepare a uniform oval tubular three-dimensional braided fabric composite product. First, a certain volume of heat-conducting oil is poured into the flexible mandrel 1 to ensure that the mandrel 1 The pressure is about 2.5MPa. After the heat-conducting oil pressure reaches the requirement, seal the oil-filled port of mandrel 1 firmly, and then install a retractable demoulding device 3 on the outer surface of the flexible oil-filled mandrel 1, and the demoulding device 3 covers the oil-filled core The surface of the mold 1, and adjust the retractable spring belt through the locking knob so that it is closely attached to the surface of the flexible core mold 1, and the flexible core mold 1 and the retractable spring belt are formed as a whole. After the above device is assembled, put it on the three-...

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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Abstract

The invention relates to a molding device and a molding method of a tubular three-dimensional braided composite material product, comprising: a flexible core mold, a retractable demoulding device, a flexible RTM outer mold, a curing device and a medium circulation device; the flexible RTM outer mold and A retractable mold release device is arranged between the flexible core films, and a flexible curing device is arranged outside the flexible RTM outer mold, and the flexible core mold is connected with a medium circulation device. It can be used for the molding of tubular three-dimensional braided composite products. This molding device can realize the preparation of various uniform interfaces, various special-shaped cross-sections and curved tubular three-dimensional braided composite materials, and can continuously carry out resin RTM impregnation after the prefabricated fabric is braided and formed. And rapid curing molding, in addition, it also has the function of rapid demoulding of composite products. It effectively avoids the problems of cumbersome molding process, single function and low production efficiency of the traditional metal or wooden mandrel.

Description

technical field [0001] The invention relates to a matching forming device for a three-dimensional weaving machine for composite material products, in particular to a forming device and a forming method for a tubular three-dimensional weaving composite material product. Background technique [0002] Three-dimensional braided composite material is a high-performance composite material with unique mechanical properties and uniform material characteristics. The fiber reinforced structure and its quality are the key to determine the performance of the composite material. The preformed parts of the three-dimensional braided composite material have many Outstanding features: First, the fibers in the workpiece are interwoven and the direction has the characteristics of arbitrary orientation, forming a structure similar to a homogeneous material, especially the fiber ratio in the thickness direction of the composite material is the same as that in the plane direction, effectively avoi...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/48B29C33/50
CPCB29C33/50B29C33/505B29C70/48
Inventor 朱波曹伟伟王永伟乔琨赵圣尧
Owner SHANDONG UNIV
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