Method for manufacturing fiber reinforced resin molded article, and manufacturing device thereof

A method for manufacturing a fiber reinforced resin molded article, the method comprising:

• preparing a mold having a runner for pouring resin into a cavity, the resin including a thermosetting resin, wherein a cutting core is disposed in the mold, the cutting core being movable relative to the runner to cut the resin in the runner;
• placing a preform in the cavity, the preform including a fiber layer on an outer surface of a liner;
• pouring the resin into the cavity through the runner;
• stopping pouring of the resin into the cavity, curing the resin, and heating the cutting core to a higher temperature than the mold;
• cutting the resin in the runner by moving the cutting core relative to the runner when a viscosity of a portion of the resin in the runner in a position of the cutting core is within a predetermined range;
• and
• demolding the preform while opening the mold after the curing of the resin impregnated into the preform ends;
• wherein
• the fiber layer of the preform becomes impregnated with the resin,
• in the cutting, part of the resin in the runner is cut by the cutting core, and
• in the demolding, when opening the mold, a shear is produced between a portion of the resin in the runner close to the cavity with respect to the cutting core and a portion of the resin in the runner opposite to the cavity with respect to the cutting core, and a remaining part of the resin in the runner is cut.