Abstract: In a stacked workpiece molding method, a second mold 30 includes through-holes 32 that extend to be opened at a peripheral edge of a workpiece body 42, the through-holes 32 are connected to a first suction device 51 that sucks a sheet material 44, a first mold 20 includes suction holes 22 that extend to be opened at a portion that contacts the workpiece body 42, the suction holes 22 are connected to a second suction device 52 that sucks the workpiece body 42, and in a bonding step of bonding the sheet material 44 to the workpiece body 42, a suction force in the through-holes 32 by the first suction device 51 is set stronger than a suction force in the suction holes 22 by the second suction device 52.

Abstract: A stacked workpiece in which a sheet material can be more firmly attached to a workpiece body than in the related art is provided. A stacked workpiece (40) includes a workpiece body (42), and a sheet material (44) stacked on the workpiece body (42). In the workpiece body (42), a workpiece-side protruding portion (42a) that is placed at least in a part of a peripheral portion of the stacked sheet material (44) and that protrudes toward a side of the sheet material (44) is provided, and a thinly-crushed compression portion (44a) is formed in a portion of the sheet material (44) stacked on the workpiece-side protruding portion (42a).

Abstract: A stacked workpiece molding device 1 includes: a first mold 20 configured to suck and hold a workpiece body 42; and a second mold 30 having on an inner surface a pattern that can be transferred to a surface of a sheet material 44 stacked on the workpiece body 42 and press the sheet material 44 against the workpiece body 42. The inner surface of the second mold 30 includes a groove portion 31 that is positioned at a peripheral edge portion of the workpiece body 42, the second mold 30 includes a through-hole 32 extending to open into the groove portions 31, the through-hole 32 is connected to a first suction device 51 that sucks the sheet material 44, and the first mold 20 includes a suction hole 22 for sucking the workpiece body 42, and the suction hole 22 is connected to a second suction device 52.