Method for fixing reinforcing fiber during molding of resin material workpiece and device
A technology of resin materials and reinforcing fibers, which is applied in the field of injection devices, can solve problems such as mechanical orientation damage of reinforcing fibers and negative effects on parts manufacturing performance.
Inactive Publication Date: 2019-05-24
COMAC +1
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Problems solved by technology
If the method of spraying a sizing agent on the surface of the reinforcing fiber is used for paving and positioning, since the sizing agent currently used for laying and positioning the reinforcing fiber in the mold is usually a low-temperature curing system, the sizing agent and the subsequent heating of the molding resin material Material compatibility issues are prone to occur between
If mechanical means are used to lay and position the reinforcing fibers, the mechanical equipment is likely to cause damage to the reinforcing fibers themselves and their mechanical orientation during the preform preparation process
Therefore, both methods are prone to negatively affect the part's manufacturing performance
Method used
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[0021] Hereinafter, specific embodiments of a method for fixing reinforcing fibers in molding of a resin material workpiece according to the present invention and an injection device for fixing reinforcing fibers in the method of the present invention will be described in detail with reference to the accompanying drawings. Provided below are only preferred embodiments according to the present invention, and those skilled in the art can think of other ways to realize the present invention on the basis of the preferred embodiments, and the other ways also fall within the scope of the present invention .
[0022] The idea of the present invention is that, for a workpiece molded with a resin material, the viscosity of the resin material used to manufacture the workpiece is controlled at an appropriate level by controlling the temperature, and sprayed onto the surface of the reinforcing fiber, utilizing the viscosity of the resin material to Reinforcing fibers for fixation.
[0...
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The invention relates to a method for fixing a reinforcing fiber during molding of a resin material workpiece. The method comprises the following steps that an obtaining step is performed, wherein a viscosity temperature curve of a resin material for producing the workpiece is obtained; a determining step is performed, wherein the temperature range of a low-viscosity platform of the resin materialis determined according to the viscosity temperature curve; and a fixing step is performed, wherein the resin material in the temperature range is jetted on the reinforcing fiber so as to fix the reinforcing fiber to a mold for molding the resin material workpiece. The invention further relates to an jet device for fixing the reinforcing fiber in the method. The jet device comprises a container for containing the resin material, a nozzle, a compressed air source, a gas pipeline connecting the nozzle with the compressed air source and a fluid pipeline connecting the nozzle with the container,and further comprises a heating device, a temperature measuring device and a heating control system, the heating control system is connected with the heating device and the temperature measuring device and can control the heating device so as to control the resin material in the container to be in the low-viscosity platform.
Description
technical field [0001] The invention relates to a method for fixing reinforcing fibers in the molding of workpieces of resin material, and also to a spraying device for fixing reinforcing fibers in said method. Background technique [0002] In the molding process of resin material workpieces, it is usually necessary to add reinforcing fibers (such as carbon fibers, glass fibers, aramid fibers, etc.) On the mold used to mold resin material workpieces and fix and position, especially for workpieces with large curvature or complex structural forms, the laying and positioning of reinforcing fibers is more important. Generally speaking, the traditional paving positioning method includes pre-spraying a sizing agent on the surface of the reinforcing fiber, or using mechanical means such as sewing and weaving to position the reinforcing fiber. [0003] In particular, for the manufacture of workpieces used in the aerospace field, a molding process is usually used, and most of the mo...
Claims
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IPC IPC(8): B29C70/44B29C70/54
Inventor陈吉平高龙飞刘卫平陈萍苏佳智郑义珠
OwnerCOMAC