| 摘要 |
PROBLEM TO BE SOLVED: To eliminate to waste to discharge works as defectives in a case where the works are non-defectives in the normal rotation by discharging the works as non-defectives on a feed conveyor only in the reverse rotation and discharging the works as defectives on the feed conveyor only in the reverse rotation in maintenance. SOLUTION: In a manual device of an automatic machine, a sensor is provided for detecting the normal rotation and the reverse rotation by the manual device.
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