Method and system for operating a fluid actuator
AssigneeINGLASS S.p.A.
InventorsMassimo Rossi, Massimo De Nadai
Life of this patent
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Abstract
A method is described for operating an actuator (10) adapted for moving by means of a pressurized fluid the shutter (12) of an injection nozzle for molten material into a mould, wherein the shutter (12) moves from a closing position, in which there is no passage of molten material through the nozzle, to an opening position, in which there is passage of molten material through the nozzle, and the shutter (12) comprises a chamber (18), and a piston (14) which is movably mounted in the chamber (18), displaced linearly thanks to the thrust of the fluid and connected to the shutter (12) to move it. The shutter (12) is moved by inserting or removing the predetermined amount of fluid into/from the chamber (18).
Claims12
Method for operating an actuator adapted for moving by means of a pressurized fluid the shutter of an injection nozzle for molten material into a mould,
- wherein the shutter
- moves from a closing position, in which there is no passage of molten material through the nozzle, to an opening position, in which there is passage of molten material through the nozzle, and a system for operating the actuator comprises
- a chamber and
- a piston which is movably mounted in the chamber displaced linearly due to the thrust of the fluid and connected to the shutter to move it,
- with the steps of
- predetermining an amount of fluid whose volume has been determined or defined or calculated or set before sending it to the actuator or extracting it from the actuator, and
- moving the shutter by inserting or removing the predetermined amount of fluid into or from the chamber,
- so that said predetermined amount of displaced fluid into/from the chamber results in a proportional linear displacement of the shutter.
Dependencies are inferred from the claim text.