| 摘要 |
PROBLEM TO BE SOLVED: To provide a molding method sufficiently filling a tooth part molding part with fibers when a gear, a sprocket or the like is molded by a fiber reinforced resin sheet to ensure the strength of tooth parts. SOLUTION: In the stamping molding of sprockets from a fiber reinforced resin sheet wherein fibers and a resin are laminated, a predetermined amt. of a sheet raw material S is delivered to be softened under heating and formed into a roll shape having a diameter smaller than a tooth bottom diameter to be further heated to be fluidized to be set to a lower mold 1 and an upper mold 2 is allowed to fall to perform stamping molding and, since the sheet raw material S can be positioned in the vicinity of a tooth part molding part (h), the fiber of the tooth part molding part (h) can be sufficiently packed. At this time, it may cut off the overflow part molded by an overflow gate after molding. |
