Patent ID: 11911891
Assignee: THK CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B  H  G | IPC B  G

Claim 4:
5. The actuator system according to claim 4, wherein
the control device is further configured to transmit, to the head unit, a placement request signal that is a signal requesting placement of the workpiece, when the position of the actuator in the direction orthogonal to the axial direction of the shaft is at the predetermined placement position, and
the head unit performs, when the placement request signal transmitted from the control device is received by the head unit,
controlling the actuator to move the shaft downward in the axial direction,
determining whether or not the workpiece suctioned to the tip of the shaft is grounded, based on a sensing result from the load detection sensor,
controlling the actuator at a time point when it is determined that the workpiece suctioned to the tip of the shaft is grounded, to stop the shaft from moving downward in the axial direction,
controlling the actuator to return a pressure in the hollow part of the shaft to a positive pressure side,
determining whether or not the workpiece is removable from the tip of the shaft, based on a sensing result from the suction detection sensor,
controlling the actuator at a time point when it is determined that the workpiece is removable from the tip of the shaft, to move the shaft upward in the axial direction, and
transmitting, to the control device, a placement completion signal that is a signal indicating completion of placement of the workpiece.