| 摘要 |
PURPOSE:To call for feeding of empty cans and to generates thanks when the cans are fed, by providing a sensor for passage of man, a detector for feeding of empty cans, a judging circuit, a voice synthesizer and a speaker to a press machine for empty cans. CONSTITUTION:A sensor 8 consisting of an ultrasonic wave transmitter and receiver which sense the passage of man in a specified range in front of a body 1 of a press machine for empty cans is provided on the front or side surface of said body. A judging circuit 9 and a voice synthesizer 10 are connected respectively to the sensor 8 and an ancillary speaker SP is driven by the synthesizer to detect the passage of man and to produce words calling for feeding of empty cans into the press machine. A signal detecting the feeding of empty cans by means of a photoelectric switch or the like provided to a stopper device 6 is fed to the circuit 9 which produces the words expressing thanks from the speaker SP from the synthesizer 10 upon pressing of the empty cans. |
