TRANSPORTATION DEVICE, ELECTRONIC COMPONENT-HANDLING DEVICE, AND TRANSPORTATION METHOD IN ELECTRONIC COMPONENT-HANDLING DEVICE

摘要

A tray transfer arm (205) capable of holding and releasing a customer tray (KST) is movable in a Z-axis direction by a Z-axis drive device. Further, during the movement of the tray transfer arm (205) in a Z-axis downward direction, the operation of this movement can be switched from a normal operation to a torque limiting operation. With the tray transfer arm (205) above, there is no need for each stocker that receives the customer tray (KST) to have an elevator, there is no need to exactly know a customer tray (KST) height or a customer tray (KST) placement height, and further, a movement speed of the tray transfer arm (205) is maintained high at a position where torque limitation is not required.