To improve operativity, eliminate any starting miss, and start working equipment, only when all the pickup signals for the works are released, by providing a work forgetting prevention device for starting the working equipment, only when all an operation switch for emitting a start signal and the pickup signals are inputted.
An operation switch structure is fitted by being fixed to, for example, a fitting position of a press 1. A work forgetting prevention device 6 having a work forgetting prevention function for operating, only when all the pickup signals for works are inputted, is used as an option unit. This work forgetting prevention device 6 displays signals of working states detection means 5 in all the working sections of the press 1 by lighting all the red light emitting diodes in a display part 68. When an operation lever of an operation switch structure is thrown down, a buzzer 8 continuously sounds a peep and informs workers completion of all the works so that the press 1 is started.
KAWAMOTO TSUYOSHI
SAKAMOTO KUNIO
NAKANO TAKASHI
YOSHIUE HISATADA
MATSUNAGA HIROYOSHI
