A device and method for automatic film laying of composite material preforms

A preform and composite material technology, applied in the field of resin-based composite material manufacturing, can solve the problems of expensive equipment, limited freedom of composite material design, service life and other problems, and achieve the effect of high laying efficiency

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A preform and composite material technology, applied in the field of resin-based composite material manufacturing, can solve the problems of expensive equipment, limited freedom of composite material design, service life and other problems, and achieve the effect of high laying efficiency

CN104354302BActive Publication Date: 2016-06-29陕西普立通复材科技有限公司

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Embodiment 1

[0050] T700 carbon fiber with a fiber number of 24k and a width of 8mm, a thickness of 0.1mm, and an area density of 200g / m 2 E51 bisphenol A epoxy resin film is supplied by the supply system, through tension control (0.1N) and conveyed into the hot pressing roller system, heat and pressure (0.5MPa, 130°C) to fuse the above dry carbon fiber with the resin film, Become a semi-preg tape with high viscosity. After the hot pressing is completed, the release paper of the semi-preg tape is recovered by the release paper recovery roller, and the semi-preg tape is then transported to the laying compaction and pressure adjustment device , by pressing and laying (0.3MPa) semi-preg tape to lay carbon fiber on the surface of the mandrel. During the laying process, the laying angle of the indenter can be controlled by the robot laying arm to realize the laying of the semi-preg tape under a variable laying angle. The laid-up preforms can be subsequently cured by vacuum assisted resin trans...

Embodiment 2

[0052] The number of filaments is 3k, the width is 10mm, and the surface density is 200g / m 2 The untwisted roving glass fiber cloth with a width of 10mm and a thickness of 0.1mm isal density of 300g / m 2 The resin film blended with E44 bisphenol A epoxy resin and cyanate ester is supplied by the supply system, and enters into the hot pressing roller system through tension control (20N) and transportation, and heats and presses (1MPa, 80°C) to make the above dry The fiber and the resin film are fused to become a semi-preg tape with high viscosity. After the hot pressing is completed, the release paper of the semi-preg tape is recovered by the release paper recovery roller, and the semi-preg tape is then transported to the laying press. Close to the pressure adjustment device, lay the fiber on the surface of the mandrel by pressing and laying (0.7MPa) semi-preg tape. During the laying process, the laying compaction and pressure adjustment device can be used to control the laying...

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Abstract

The invention discloses a device and method for automatically laying a composite preformed body in a film-mounting manner. The device is characterized in that a supply system, a hot press roll system, a laying compression and pressure adjusting device and a conveying guide wheel are arranged on a rack. The method comprises the following steps: conveying fibers and resin films supplied by the supply system to the hot press roll system for pressing the fibers and the resin films into half prepreg tapes, conveying the half prepreg tapes to the laying compression and pressure adjusting device, enabling a laying arm of a robot to drive the rack for driving the laying compression and pressure adjusting device to lay the half prepreg tapes on a core mold, and adjusting the laying pressure and the laying path in real time as needed to obtain the preformed body. According to the device and the method, the fiber laying angle can be changed according to the needs of the laying path, the fiber-resin ratio of the composite preformed body can be accurately controlled, the subsequent processing processes of the preformed body and the material waste are reduced, the laying quality of the preformed body is high, the compatibility between the preformed body and other composite material forming process is good, and various preformed bodies with different fiber / resin systems can be formed.

Description

technical field [0001] The invention belongs to the field of resin-based composite material manufacturing, and in particular relates to a device and method for automatically laying composite material preforms in a film-sticking manner. Background technique [0002] The promotion of high-performance fiber composite materials has driven composite materials to replace original materials in more and more fields, greatly improving the performance of original components. At the same time, the molding technology of high-performance fiber composite materials is also gradually developing - from the initial miniaturization to large-scale transition, from the original simplicity to complexity. The current mature composite molding technology is based on the prepreg material, which is heated and cured after manual or automatic laying. However, for the existing prepreg tape laying technology, there are some problems in the laying process that are difficult to overcome. For example, for t...

Claims

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Application Information

Patent Timeline

29 Jun 2016

Publication

CN104354302B

IPC: B29C70/38; B29C70/34; B29C70/54; B29C31/00

CPC: B29C70/34; B29C70/386; B29C70/54

Inventors: 段玉岗; 王奔