An article transfer facility that performs an article transfer operation, comprising:
- a transfer device for holding an article and arranging the article in an arrangement region having a rectangular shape in a plan view;
- and
- a control device for controlling the transfer device,
- wherein one corner portion of the arrangement region is a reference corner portion, a direction parallel to one of two orthogonal sides of the arrangement region is a first direction, a direction parallel to the other one of the two orthogonal sides of the arrangement region is a second direction,
- wherein the side farther from the reference corner portion in the first direction is a far side in the first direction, the side closer to the reference corner portion in the first direction is a close side in the first direction, the side farther from the reference corner portion in the second direction is a far side in the second direction, and the side closer to the reference corner portion in the second direction is a close side in the second direction,
- wherein the control device is configured to perform setting of an arrangement position of the article in the arrangement region such that a plurality of the articles are arranged in order from a position adjacent to the reference corner portion, and to control the transfer device in accordance with the setting,
- wherein with every article whose arrangement position in the arrangement region has already been set being a set article, and an article whose arrangement position is to be set next being a target article,
- the control device determines a size of a first dead space, which is a dead space in a plan view formed in a region surrounded by the set article and the target article if the target article is arranged at a first candidate position, which is a position adjacent to the set article on the far side in the first direction and is an end position on the close side in the second direction,
- wherein if the size of the first dead space is smaller than a prescribed first threshold, the control device sets the first candidate position as the arrangement position of the target article,
- wherein if the size of the first dead space is greater than or equal to the first threshold, the control device determines a size of a second dead space, which is a dead space in a plan view formed in a region surrounded by the set article and the target article if the target article is arranged at a second candidate position, and which is a position adjacent to the set article on the far side in the second direction and is an end position on the close side in the first direction, and
- wherein if the size of the second dead space is smaller than a prescribed second threshold, the control device sets the second candidate position as the arrangement position of the target article.