Structural body manufacturing method and panel

A method for manufacturing a structure, comprising:

• a molding step;
• an engaging step;
• and
• a cutting step,
• wherein, in the molding step, a molded body is molded using a mold,
• the mold includes a movable portion and a pair of first and second split molds,
• each of the first and second split molds includes a cavity, an inner pinch-off portion, and an outer pinch-off portion,
• the inner pinch-off portion is connected to the cavity,
• the outer pinch-off portion is located further away from the cavity than the inner pinch-off portion,
• the movable portion is provided to be movable relative to the first and second split molds, and the movable portion includes an engaging portion,
• the molded body includes a molded main body, an outer line portion, and an outer burr portion,
• the molded main body includes an inner line portion and an inner burr portion,
• the molded main body is molded in the cavity in the molding step,
• the inner line portion is squashed by the inner pinch-off portion in the molding step,
• the inner burr portion is formed between the inner line portion and the outer line portion,
• the outer line portion is squashed by the outer pinch-off portion in the molding step,
• the outer burr portion is connected to the outer line portion,
• in the engaging step, the outer burr portion is engaged with the engaging portion of the movable portion, and
• in the cutting step, the outer burr portion is cut from the inner burr portion along the outer line portion by moving the movable portion relative to the first and second split molds with the outer burr portion engaged with the engaging portion;
• wherein the movable portion further includes a suction part, and
• in the engaging step, the outer burr portion is suctioned to the engaging portion via the suction part, the outer burr portion is shaped along the engaging portion, and thereby the outer burr portion is engaged along the engaging portion.

A method for manufacturing a structure using a mold and an outer frame, the method comprising:

• a hanging step;
• a suction step, and
• a shaping step,
• wherein, in the hanging step, a molten resin sheet is hung in front of the mold,
• the mold includes a cavity, a pinch-off portion, and a chamfer portion,
• the chamfer portion is provided between the outer frame and the pinch-off portion and is formed so that the distance between the chamfer portion and the hung resin sheet increases in a direction from the pinch-off portion to the outer frame,
• in the suction step, the outer frame is advanced and the resin sheet is suctioned by the outer frame to form a closed space between the outer frame, the resin sheet, and the mold,
• the outer frame is positioned around the mold and is configured to suck the resin sheet,
• in the shaping step, the outer frame is backed and the closed space is depressurized to shape the resin sheet by the cavity, and
• the resin sheet moves with the outer frame as the outer frame is backed and is positioned along the chamfer portion.