The monitoring system for approach to safety with sensor and valve monitored

摘要

"Monitoring system for methodology of safety with sensor and valve monitored" includes this report describing the invention patent to a redundant monitoring system, electrical, mechanical and hydraulic doors for access to the area of moulds, with true In industrial presses and injection molding machines, to ensure the safety of the operators.It is composed of a sensor encoded (S2, electrical diagram) connected to a monitoring relay (RE4, electrical diagram) which monitors if the door is open or closed, in the case of the door is closed, the relay monitoring (RE4) energizes the contatares kc3 and kc4 their inhabitants ILITA command to actuate the solenoid valve which is a valve that opens and closes the hydraulic cylinder.In parallel to this system, there is a roller hydraulic valve (S13, diagram, hydraulic) being driven with the opening and closing of the door for access to the area of the mold.The valve roller S13, is in series with the hydraulic cylinder (S6 and S12 diagram, hydraulic), if the door is opened, the oil flow is directed to the reservoir, if the door is closed, the oil flow allows pressurization of the hydraulic cylinder.The valve roller S13, has positive break, which in case of breakdown she directs the oil to the tank by preventing the operation of the machine. In series with the valve has a pressure roller (PR1, electrical diagram) which monitors the pressure of the hydraulic line.In the case of a combination of door open and pressure in the hydraulic line, the pressure switch monitoring relays PR1 disables the contatares power causing the hydraulic pump shut down. These two systems (redundant hydraulic and electrical mechanical system) is in a bar steel staggered, which works in parallel with the movement of the door opening operation.When the door is open, closes the passage orifice of the bar staggered through steel plate, thereby preventing the movement of the set of molding in the set is in motion this system prevents the opening of the door.