| 摘要 |
PROBLEM TO BE SOLVED: To reduce waiting time for a board that has been completely mounted when a state where the mounting has been completed is mixed with that where the mounting is being carried out due to some causes while there is a plurality of stages for mounting electronic components. SOLUTION: When a circuit board is to be conveyed to the plurality of stages for mounting work by successive synchronous conveyance, a circuit board 1 is conveyed to a third stage 33 downstream without waiting for the completion of mounting of first and fourth stages 31 and 34, and mounting is started while the circuit board 1 is not retained in the third stage 33 in a second stage 32 where the mounting has been completed, thus efficiently conveying the board, and hence improving the throughput in production line. |
