To provide an inexpensive safety device not to lower a facility operation rate in a system to carry out work by an automatic machine.
A robot RB, etc. stop in the case when a safety fence 2 and a photoelectric sensor 1 are effective and the safety fence 2 is opened or the photoelectric sensor 1 is interrupted while the robot RB is in the middle of practicing work to take out a work from a work container 2. The robot RB can work when the safety fence 1 and the photoelectric sensor 2 are ineffective. Each of workability display lamps of work supply switch boxes 1, 2 is put on and off. A working area access switch of the box 1 is made into an ON state and a workability signal at the side of the work container 1 for the robot RB is put OFF in the case when a worker carries out exchange work of the work container 1. It is possible to continue the work of the robot while securing safety of the worker in the same way even while the robot RB works on the side of the work container 1.
ODA MASARU
Hideo Sugiyama
Koichi Yuda
Uozumi Takahiro
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