Stocker system having active shelf module and control method thereof

A control method of a stocker system comprising:

• extending at least a portion of an active shelf module, which is installed inside a stocker body having at least one accommodation space formed therein, out of the stocker body;
• seating a carrier, which is lowered by a carrier transfer device, on the active shelf module extended out of the stocker body;
• and
• accommodating the carrier in the at least one accommodation space inside the stocker body by contracting the active shelf module,
• wherein the extending of the at least the portion of the active shelf module comprises:
• raising a seating plate in an oblique direction or a vertical direction along an upward path by interaction between a cam protrusion and a cam groove portion of a cam member, and
• moving the seating plate forward and backward along a forward/backward path defined by the cam groove portion such that lifting and forward/backward movement of the seating plate are performed by a single driving device via the cam groove portion.

A stocker system having an active shelf module, comprising:

• a stocker body having at least one accommodation space therein;
• an active shelf module installed on the stocker body and having at least a portion extended or retracted in a forward and reverse direction;
• and
• a controller configured to extend the active shelf module to receive a carrier from the outside of the stocker body and control the active shelf module to accommodate the carrier in the at least one accommodation space inside the stocker body,
• wherein:
• the active shelf module comprises:
• a seating plate formed in a shape corresponding to the carrier such that the carrier can be seated thereon;
• a base installed on the stocker body;
• and
• a driving device installed between the seating plate and the base and configured to raise the seating plate in an oblique direction or a vertical direction in the at least one accommodation space and move the seating plate forward and backward out of the stocker body,
• the driving device comprises:
• a cam member installed on one side or both sides of the base and having a cam groove portion extending from an upward path to a forward/backward path;
• a cam protrusion guided along the cam groove portion of the cam member;
• a moving carriage having the cam protrusion formed on one side thereof and configured to rise along the upward path along with the cam protrusion and move forward and backward along the forward/backward path;
• and
• an electric actuator configured to receive a control signal from the controller and raise and move the moving carriage forward and backward,
• the moving carriage comprises:
• a lifting platform configured to rise together with the cam protrusion in the oblique direction or the vertical direction along the upward path;
• a first forward-backward moving platform configured to move forward and backward at a first stage in a horizontal direction along a first rail installed on the lifting platform;
• a second forward-backward moving platform configured to move forward and backward at a second stage in the horizontal direction along a second rail installed on the first forward-backward moving platform when power is transmitted by a first power transmission device as the first forward-backward moving platform moves forward by means of the electric actuator;
• and
• a third forward-backward moving platform fixed to the seating plate and configured to move forward and backward at a third stage in the horizontal direction along a third rail installed on the second forward-backward moving platform when power is transmitted by a second power transmission device as the second forward-backward moving platform moves forward,
• the first power transmission device comprises:
• a (1-1)th pulley rotatably installed on the first forward-backward moving platform;
• a (1-2)th pulley spaced apart from the (1-1)th pulley in a forward or reverse direction and rotatably installed on the first forward-backward moving platform;
• and
• a (1-3)th belt which is wound around the (1-1)th pulley and the (1-2)th pulley and rotated and has one side fixed to the lifting platform and the other side fixed to the second forward-backward moving platform so that when the one side moves relatively forward, the other side moves relatively backward, or when the one side moves relatively backward, the other side moves relatively forward, and
• the second power transmission device comprises:
• a (2-1)th pulley rotatably installed on the second forward-backward moving platform;
• a (2-2)th pulley spaced apart from the (2-1)th pulley in a forward or reverse direction and rotatably installed on the second forward-backward moving platform;
• and
• a (2-3)th belt which is wound around the (2-1)th pulley and the (2-2)th pulley and rotated and has one side fixed to the first forward-backward moving platform and the other side fixed to the third forward-backward moving platform so that when the one side moves relatively forward, the other side moves relatively backward, or when the one side moves relatively backward, the other side moves relatively forward.