Ceiling transport vehicle system and teaching unit
An overhead transport vehicle system includes an overhead transport vehicle to convey an object, and a teaching unit to teach transfer of the object by the overhead transport vehicle to a load port on which the object is to be placed. The teaching unit includes a body including a detector to be brought into contact with a positioning pin on the load port to detect a position of the positioning pin, and a flange movable up and down with respect to the body and to be held by a holder to be raised and lowered by an elevator of the overhead transport vehicle.
1. An overhead transport vehicle system comprising:
an overhead transport vehicle to convey an object; and
a teaching unit to teach transfer of the object by the overhead transport vehicle to a load port on which the object is to be placed; wherein
the teaching unit includes:
a body including a detector to be brought into contact with a positioning pin disposed on the load port to detect a position of the positioning pin; and
a flange movable up and down with respect to the body and to be held by a holder to be raised and lowered by an elevator of the overhead transport vehicle.
2. The overhead transport vehicle system according to claim 1 , further comprising:
an operation detector to detect a lifting operation of the body relative to the holder in a state in which the flange is held by the holder; and
a controller to recognize, based on a detection result of the operation detector, that the teaching unit has been placed on the positioning pin and the positioning pin is receiving the weight of the teaching unit.
3. The overhead transport vehicle system according to claim 2 , wherein the operation detector includes:
a detected structure provided to the holder to be movable up and down and to be in contact with the body and ascend relative to the holder in conjunction with an ascent of the body; and
a sensor to detect an ascent of the detected structure relative to the holder.
4. The overhead transport vehicle system according to claim 1 , wherein the flange is movable up and down with respect to the body within a certain range with a movable mechanism interposed therebetween.
5. A teaching unit in an overhead transport vehicle system including an overhead transport vehicle to convey an object, the teaching unit being used to teach transfer of the object by the overhead transport vehicle to a load port on which the object is to be placed, the teaching unit comprising:
a body including a detector to be brought into contact with a positioning pin disposed on the load port to detect a position of the positioning pin; and
a flange movable up and down with respect to the body and to be held by a holder to be raised and lowered by an elevator of the overhead transport vehicle.
6. The teaching unit according claim 5 , wherein
the overhead transport vehicle system includes an operation detector to detect a lifting operation of the body relative to the holder in a state in which the flange is held by the holder;
the operation detector includes:
a detected structure provided to the holder to be movable up and down and to be in contact with the body and ascend relative to the holder in conjunction with an ascent of the body; and
a sensor to detect an ascent of the detected structure relative to the holder; and
the body is provided with a contact structure in a standing manner to contact with the detected structure of the operation detector.
7. The overhead transport vehicle system according to claim 2 , wherein the flange is movable up and down with respect to the body within a certain range with a movable mechanism interposed therebetween.
8. The overhead transport vehicle system according to claim 3 , wherein the flange is movable up and down with respect to the body within a certain range with a movable mechanism interposed therebetween.