COOLANT SUPPLY DEVICE, CONTROL SYSTEM FOR SUCH COOLANT SUPPLY DEVICE AND METHOD OF OPERATION OF SUCH A COOLANT SUPPLY DEVICE

摘要

The invention relates to a coolant supply device of a machining device to be supplied with a fluid coolant, particularly with water, for example a welding arrangement (2) or a welding robot etc., the region or tool to be cooled, for example a welding cap, being incorporated into an open or closed coolant circuit which has an inflow (4) and an outflow (5), and said device comprising a conveyor device that operates in the coolant circuit and conveys the coolant within said coolant circuit, and a control device (8) for deactivating said conveyor device and/or closing the inflow (4) and/or outflow (5) and evacuating said inflow (4) and/or outflow (5) such that, in the region of the tool being cooled, an at least negligible level of negative pressure prevails in the inflow line (9) and/or in the outflow line (12).