Transport system and transport method
A transport system includes first and second intrabay overhead tracks, first and second interbay overhead tracks, first and second storages, first and second delivery ports, first and second cranes including first and second runners that run along the first and second intrabay overhead tracks, respectively, first and second masts, and first and second transferors, and an overhead transport vehicle including a runner that runs along the first and second intrabay overhead tracks, a holder, a lifting driver, and a lateral extender.
1. A transport system comprising:
a first intrabay overhead track offset from immediately above a load port in a first processing tool and alongside the load port in the first processing tool;
a second intrabay overhead track offset from immediately above a load port in a second processing tool and alongside the load port in the second processing tool;
an interbay overhead track that connects the first intrabay overhead track and the second intrabay overhead track;
first storages and second storages provided below and lateral to the first intrabay overhead track and the second intrabay overhead track, respectively, and positioned along a vertical direction in a plurality of stages to store therein an article;
a first delivery port and a second delivery port provided below and lateral to the first intrabay overhead track and the second intrabay overhead track, respectively;
a first crane including a first runner that runs along the first intrabay overhead track, a first mast that hangs down from the first runner, and a first transferor to be guided by the first mast and be raised and lowered, to transport an article between the load port in the first processing tool, the first storage, and the first delivery port;
a second crane including a second runner that runs along the second intrabay overhead track, a second mast that hangs down from the second runner, and a second transferor to be guided by the second mast and be raised and lowered, to transport an article between the load port in the second processing tool, the second storage, and the second delivery port; and
an overhead transport vehicle including a runner that runs along the first intrabay overhead track, the second intrabay overhead track, and the interbay overhead track, a holder that holds an article, a lifting driver that raises and lowers the holder while suspending the holder, and a lateral extender that controls the lifting driver to protrude laterally, to transport an article between the first delivery port and the second delivery port.
2. The transport system according to claim 1 , wherein the crane is a suspension crane.
3. The transport system according to claim 1 , wherein
the first intrabay overhead track and the second intrabay overhead track are circling tracks;
the first crane and the overhead transport vehicle circulate on the first intrabay overhead track in a same direction; and
the second crane and the overhead transport vehicle circulate on the second intrabay overhead track in a same direction.
4. The transport system according to claim 1 , wherein the first delivery port and the second delivery port are disposed at top stages of the first storages and the second storages, respectively.
5. A transport method for a transport system, the transport system including a first intrabay overhead track offset from immediately above a load port in a first processing tool and alongside the load port in the first processing tool, a second intrabay overhead track offset from immediately above a load port in a second processing tool and alongside the load port in the second processing tool, an interbay overhead track that connects the first intrabay overhead track and the second intrabay overhead track, first storages and second storages provided below and lateral to the first intrabay overhead track and the second intrabay overhead track, respectively, and positioned along a vertical direction in a plurality of stages to store therein an article, a first delivery port and a second delivery port provided below and lateral to the first intrabay overhead track and the second intrabay overhead track, respectively, a first crane including a first runner that runs along the first intrabay overhead track, a first mast that hangs down from the first runner, and a first transferor to be guided by the first mast and be raised and lowered, a second crane including a second runner that runs along the second intrabay overhead track, a second mast that hangs down from the second runner, and a second transferor to be guided by the second mast and be raised and lowered, and an overhead transport vehicle including a runner that runs along the first intrabay overhead track, the second intrabay overhead track, and the interbay overhead track, a holder that holds an article, a lifting driver that raises and lowers the holder while suspending the holder, and a lateral extender that controls the lifting driver to protrude laterally, the transport method comprising:
transporting, by the first crane, an article between the load port in the first processing tool, the first storage, and the first delivery port;
transporting, by the second crane, an article between the load port in the second processing tool, the second storage, and the second delivery port; and
transporting, by the overhead transport vehicle, an article between the first delivery port and the second delivery port.