Method for producing composite material mold for composite material long member
The present invention provides a method for producing a mold made of a composite material by using a prepreg material. First, a material 200 of a mold having a long two-dimensional shape and in a semi-cured state is produced from a prepreg sheet by continuous pultrusion molding. Subsequently, the semi-cured material 200 is mounted on a plurality of templates 131, 132, 133, 134 , and 135 vertically provided on a base plate 120 of a molding apparatus 100 , and thereby plastically deformed into a three-dimensional shape. The entire molding apparatus 100 is heated and pressurized to produce a completely-cured mold.
1. A method for producing a composite material mold for a composite material long member, comprising the steps of:
molding a material of a mold having a two-dimensional shape and in a semi-cured state by causing a material obtained by overlapping a required number of prepreg sheets in which a composite material such as carbon fiber is impregnated with thermosetting resin to continuously pass through a hot press and a heat curing oven while applying a tension to the material;
plastically deforming the mold material into a three-dimensional shape by mounting the mold material in a semi-cured state on a plurality of templates vertically provided on a base plate of a molding apparatus at an interval;
completely curing the mold material in a semi-cured state by heating and pressurizing the molding apparatus on which the mold material deformed into a three-dimensional shape is mounted;
forming a joggle portion partially having a different shape in section by laminating a required number of prepreg sheets on a portion of a surface of the completely-cured mold material; and
completely curing the mold material where the joggle portion is formed by heating and pressurization.