SAFETY CIRCUIT FOR FLAT CONTROL SWITCH

PROBLEM TO BE SOLVED: To stop a switch operation without pushing-on the switch for the subsequent command, after a certain time has ellaped, when an operation switch has been pushed unexpectedly by suspending the switching function, when an actuation switch is not pushed on during counting of a time...

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Bibliographische Detailangaben
Hauptverfasser:	HIROZAWA MASAO, NAKAMURA SHUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To stop a switch operation without pushing-on the switch for the subsequent command, after a certain time has ellaped, when an operation switch has been pushed unexpectedly by suspending the switching function, when an actuation switch is not pushed on during counting of a timer which starts counting simultaneously with the start. SOLUTION: A controller 1 is provided with a timer which begins to count through a start signal of a safety circuit, actuated when one push-button switch in a plurality of switches in an operation box 3 is pushed on. The start button in the operation box 3 is pushed on to operate an injection molding machine and the safety circuit 5 begins to work by actuation of manual operation, and at the same time the timer in the controller 1 begins to count when time-up is not effected, it is discriminated whether the actuation switch in the operation box has been pushed on or not, and the switch function is stopped when the actuation switch has not been pushed.