Mold, molding jig and molding method

Abstract

A mold ( 10 ) according to the present invention is a mold for molding a surface of a laminate ( 60 ) when curing the laminate ( 60 ) obtained by laminating prepreg ( 62 ). The mold ( 10 ) has a planar plate shape and elastically deforms from the planar plate shape into a shape corresponding to a shape of the laminate ( 60 ), thereby being capable of coming tight into contact with the laminate ( 60 ). Thereby, a mold which is easy to handle can be provided.

What is claimed is: 
     
         1 . A molding method comprising:
 a laminating step of forming a laminate by laminating prepreg,   a coating step of bringing a flexible mold of a planar plate shape into tight contact with the laminate, with a retaining mechanism, while deforming the flexible mold into a shape corresponding to a shape of the laminate,   a bagging step of covering, with a bag film, the mold which is in tight contact with the laminate by the retaining mechanism in such a manner that the shape of the mold corresponds to the shape of the laminate, and   a curing step of curing the laminate in a state in which the mold is kept in tight contact with the laminate.   
     
     
         2 . The molding method according to  claim 1 , wherein in the coating step, the mold is brought into tight contact with the laminate by stretching a retaining belt over an outside surface of the mold, arranging a plurality of spacers between the retaining belt and the mold, and tightly fastening the retaining belt. 
     
     
         3 . The molding method according to  claim 2 , wherein the laminate has a cylindrical shape, and
 in the coating step, the retaining belt is stretched in an axial direction of the laminate and the plurality of spacers are arranged in an ascending order of height toward a center of the retaining belt.   
     
     
         4 . The molding method according to  claim 1 , wherein the prepreg is laminated on a core die serving as a magnetic body, and
 in the coating step, a plurality of retaining magnets that generate magnetism are absorbed onto the core die via the mold and the laminate so that the mold is brought into tight contact with the laminate.   
     
     
         5 . The molding method according to  claim 4 , wherein the laminate has a cylindrical shape, and
 in the coating step, the plurality of retaining magnets are arranged uniformly in an axial direction of the mold as well as uniformly in a circumferential direction of the mold.   
     
     
         6 . The molding method according to  claim 3 , wherein in the coating step, when bringing the mold into tight contact with an entire circumference of the laminate, work of bringing the mold into tight contact with the laminate always from a side of the laminate is performed by rotating the laminate. 
     
     
         7 . The molding method according to  claim 5 , wherein in the coating step, when bringing the mold into tight contact with an entire circumference of the laminate, work of bringing the mold into tight contact with the laminate always from a side of the laminate is performed by rotating the laminate.