Abstract: A hand for parallel link robot includes: a holder configured to extract a workpiece from an extraction portion and hold the workpiece; and a swing-up mechanism portion configured to swing the workpiece held by the holder up centering around a turning axis to change a posture of the workpiece. A parallel link robot includes: a link mechanism portion; and the hand mounted to the link mechanism portion.

Abstract: A hand for parallel link robot includes: a holder configured to extract a workpiece from an extraction portion and hold the workpiece; and a swing-up mechanism portion configured to swing the workpiece held by the holder up centering around a turning axis to change a posture of the workpiece. A parallel link robot includes: a link mechanism portion; and the hand mounted to the link mechanism portion.

Abstract: A robot system includes a robot that includes a hand and a robot main body. The hand is mounted to the robot main body and is configured to suck a box material. The robot main body assembles the box material sucked by the hand while moving the box material in a predetermined direction. A first fixed folding member accepts an inside flap of the box material so as to fold the inside flap and render the inside flap into a bottom surface or an upper surface of the box material. A second fixed folding member accepts an outside flap of the box material so as to fold the outside flap and render the outside flap into the bottom surface or the upper surface of the box material.