Patent ID: 9358686
Filing Date: 2016-06-07
CPC Classification: B25J,G05B,Y10S

Claim Text:
1. A robot system comprising: a robot including a hand configured to hold a thin plate-shaped workpiece and an arm configured to move the hand; and a robot controller configured to control the robot, wherein the hand includes a gripping mechanism configured to grip the workpiece, wherein the gripping mechanism includes a tip end side engaging part disposed at a tip end of the hand and a pressing part disposed at a base end of the hand, the pressing part is configured to push the workpiece toward the tip end side engaging part, wherein the robot controller controls the robot to perform a delivery of the workpiece held by the hand from the hand to a workpiece support member other than the hand at a workpiece transfer position in such a way that upon reaching the workpiece transfer position, the hand is moved in a horizontal direction while being moved in a vertical direction, wherein, after moving the hand in the horizontal direction while moving the hand in the vertical direction from the workpiece transfer position, the robot controller operates the gripping mechanism to check a presence or absence of the workpiece while retracting the hand, and wherein, when a predetermined time has elapsed after operating the gripping mechanism, the robot controller checks the presence or absence of the workpiece on the hand and the robot controller stops the robot when the workpiece is on the hand.