A carbon fiber automobile front hatch cover molding method

Abstract

The invention relates to a rapid molding process flow of a carbon fiber front hatch cover for automobiles. It belongs to the technical field of traffic facilities. A carbon fiber automobile front hatch cover molding method provided by the present invention, compared with the common automobile carbon fiber front hatch cover molding method, cancels the three processes of prepreg preheating, preforming, and semi-finished product cooling, and simplifies the process flow , so that the equipment and tooling put into the production line are reduced, the space occupied by equipment and tooling is saved, the input cost is reduced, and the quality risk of position deviation and fiber texture disorder that may be caused by the transfer of preforms is avoided; the curing time is selected to be 5 The ‑10min medium temperature curing carbon fiber prepreg greatly shortens the molding cycle of the automobile front hatch, which is a big step forward to adapt to the high-efficiency production rhythm of the automobile industry; the semi-finished product is demolded after the mold temperature drops to 80‑100 °C, reducing the semi-finished product Occupying the mold time shortens the molding cycle and solves the quality problems of semi-finished product deformation, mold sticking, and fiber texture disorder.

Description

technical field [0001] The invention relates to a rapid molding process flow of a carbon fiber front hatch cover for automobiles. It belongs to the technical field of traffic facilities. Background technique [0002] At present, the common compression molding method of automobile front hatch generally includes prepreg cutting, prepreg preheating, preforming, preformed body mold entry, mold closing, curing, demoulding, semi-finished product cooling, edge trimming, inspection and other processes , it can be seen that there are many molding processes and a long production line, which will easily lead to an increase in production equipment, tooling, site, cost, etc., followed by an increase in quality control points, which will increase risks to the quality of the final product; the prepreg curing cycle of the ordinary curing system It lasted for several hours, completely unable to adapt to the rhythm of high-efficiency production in the automotive industry; in order to facilit...

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Problems solved by technology

[0002] At present, the common compression molding method of automobile front hatch generally includes prepreg cutting, prepreg preheating, preforming, preformed body mold entry, mold closing, curing, demoulding, semi-finished product cooling, edge trimming, inspection and other processes , it can be seen that there are many molding processes and a long production line, which will easily lead to an increase in equipment, tooling, site, and cost of the production line, followed by an increase in quality control points, which will increase risks to the quality of the final product; the prepreg curing cycle of the ordinary curing system It lasted for several hours, completely unable to adapt to the rhythm of high-efficiency production in the automotive industry; in order to facilitate demoulding, avoid semi-finished product deformation, sticking to the mold, and prevent fiber texture disorder on the outer surface of the semi-finished product, the temperature of the molding mold was lowered below 60°C before demoulding. Semi-finished products occupy the mold for a long time, and the molding cycle is prolonged. The next product needs to be heated again, which increases energy consumption. The carbon fiber front hatch cover that is molded will also face two major technical problems: First, the direction of the carbon fiber texture on the outer surface cannot be disordered at all. , the second is that the product deformation of the special-shaped surface with a thickness of about 1mm meets the tolerance requirements

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