| 摘要 |
The present invention provides a production system capable of further improving production efficiency and quality. The ring management system comprises size measurement unit 300 for measuring size (l, t) of the ring w, first convey unit 400 for moving the ring w whose size has been measured, a first stocker 500 having a plurality of storage positions for storing rings conveyed in by the first convey unit 400, a second convey unit 700 for conveying out the rings from the first stocker 500 means for stacking, and a control unit 900. The control unit 900 includes memory means 908 for storing for each of the rings wi, size (li, ti) measured by the size measurement means in association with the storage position pi in the first stocker 500, first selection means 910 for selecting a ring wj constituting a stacked ring according to the ring size stored in the memory means 908, and first instruction means 912 to instruct the second convey unit 600 so as to convey out the ring selected by the first selection means 910 from the storage position pj in the first stocker 500.
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