The present invention relates to a sand core robot system gripper unit capable of accurately sensing the positions of six sand cores by shooting, gripping them, and moving them to an assembly line and releasing them to assemble into six large sand cores. The present invention provides a sand core robot system gripper unit connected to a robot arm rotatably installed left and right and up and down on the upper part of a robot base to grip a sand core, wherein the gripper unit is connected to the robot arm and transferred to a supply line The technical idea is that the first to sixth grippers move in the front and rear directions according to the coordinates of the six sand cores taken, grip each of them, and then release them so that they can be assembled on the six large sand cores transferred to the assembly line. According to the present invention, the first to sixth grippers automatically move forward and backward and left and right directions with the coordinate values for the positions of the first to sixth sand cores photographed with the vision camera, and then grip the six pieces on the assembly line. As each is quickly assembled into the large sand core, it has a very useful effect to shorten the working time and prevent damage due to impact.
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