| 摘要 |
PROBLEM TO BE SOLVED: To provide a means capable of simply setting positioning reference usable in various processes irrespective of a type of a workpiece or a process rank by an automatic scheme with a reduced facility cost burden and accurately and reliably detecting the positioning reference without contact in a can making system in an automatic line. SOLUTION: In an automatic line for continuously manufacturing a can product, a can body or a can lid from a metallic raw material plate or its work through various processes, a reference mark is painted with fluorescent ink at a required position on the surface of the workpiece. An ultraviolet ray is irradiated to the workpiece during or before a required working process on a downstream of the line to make the reference mark luminous and the mark is detected by a fluorescent sensor. The position is determined by the detected reference mark for required machining. COPYRIGHT: (C)2011,JPO&INPIT |
