A method of ultrasonically implanting steel needles in the preparation of three-dimensional fabrics
A three-dimensional fabric and ultrasonic technology, applied in the field of three-dimensional composite material prefabrication, can solve the problems of difficult control of the size and stability of the steel needle matrix, manpower, equipment and tooling, and difficult process, and achieve low cost and man-hours. Less, easy to use effect
Active Publication Date: 2017-01-04
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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Problems solved by technology
[0009] In order to overcome the limitation of the plane size of the fine-woven puncture process fabric in the prior art, more manpower, equipment and tooling are required, the process cost is high, and the size and stability of the steel needle matrix are not easy to control when forming large-scale components. The process is difficult to carry out and other defects, the purpose of the present invention is to provide a method for ultrasonically implanting steel needles in the preparation of three-dimensional fabrics
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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[0042] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples.
[0043] The technological process of ultrasonic steel needle implantation process is as follows: ① carbon cloth layer ② compaction by pressure ③ ultrasonic implantation of steel needle ④ Z-direction displacement. The specific steps are:
[0044] ① After cutting the carbon cloth that meets the layer density requirements, lay the layers, and pre-press and compact them to meet the layer density requirements;
[0045] ②Place the fiber cloth layer that meets the layer density requirements on the puncture equipment operating platform, and pressurize it with pressurization equipment;
[0046] ③After the thickness of the fabric reaches the range required by the process, arrange the steel needles (the length of the steel needles exceeds the thickn...
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 discloses a method for ultrasonically implanting a draw point in the preparation of a three-dimensional fabric. The method comprises the steps of implanting draw points which are arranged in advance into a fiber cloth laying layer in the Z direction by utilizing the ultrasonic vibration of an ultrasonic device, and replacing the Z-direction draw points with fibers or fiber rods to form the three-dimensional fabric after the draw points are completely implanted. According to the method, the Z-directional draw points are implanted into the fiber cloth laying layer, and the Z-directional draw points are used for preliminarily arranging passages for the Z-directional replacement fibers to form the three-dimensional fabric, so that the forming difficulty of the plane large-sized and large-thickness three-dimensional fabric can be solved, an operating process is small in manpower consumption, the cost is low, the use is convenient, the working time is little, and the production efficiency can be effectively improved.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional composite material prefabricated body manufacturing, and specifically relates to the application of ultrasonic steel needle implantation technology in the preparation of three-dimensional weaving with adjustable Z-direction spacing, that is, the method of ultrasonically implanting steel needles in the three-dimensional fabric preparation. Background technique [0002] Composite materials have the characteristics of light weight, high strength, and ablation resistance, and have been widely used in cutting-edge fields such as aviation and aerospace. The three-dimensional structure braided composite material has all-round reinforcement in the thickness direction and the transverse direction, which greatly improves the interlaminar shear strength of the material, and has the ability to form complex components with special shapes, so it has a wide range of applications in aviation, aerospace, ...
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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IPC IPC(8): B29B11/00B29C70/24B29C70/38
Inventor 董伟锋朱晶晶李小虎胡方田蒋轩
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD