EXPLOSION-PROOF DEVICE OF COATING ROBOT

PROBLEM TO BE SOLVED: To prevent the ignition of paint even if a current is supplied to respective revolving motors in such a state that paint is leaked into a coating arm by the damage of paint piping by supplying explosion-proof gas into respective cases from supply nozzles to raise the atmospheric pressure in the case. SOLUTION: When a current is supplied to first-fourth revolving motors 21-24 in such a state that paint is leaked into a coating arm main body A by the damage of a part of a paint supply pipe 10, since the first-fourth revolving motors 24 are respectively surrounded by first-fourth cases 31-34 and explosion-proof air 40 is supplied into the respective cases 31, 32, 33, 34 from the emitting orifices of respective nozzles 43 to raise the pressure in the cases, paint is prevented from penetrating into the cases 31, 32, 33, 34 and, even if a current is supplied to the first-fourth revolving motors 21-24, the ignition of paint can be prevented and a coating robot can be safely used.