Valve gate assembly
AssigneePlastic Engineering & Technical Services, Inc.
InventorsPatrick Tooman, Bruce Casey
Life of this patent
Estimating the term…
Abstract
A valve gate assembly for regulating a flow of molten material into a mold. The valve gate assembly includes a movable valve that can move between a fully closed position and a fully open position. The valve gate assembly further includes an actuating system operatively cooperating with the valve to move the valve and infinitely position the valve between the fully closed position and the fully open position.
Claims20
A valve gate assembly for regulating a flow of molten material into a mold comprising:
- a movable valve that can move between a fully closed position and a fully open position;
- and
- an actuating system including an actuator operatively attached to said valve, said actuating system operatively cooperating with said valve to incrementally move said valve a predetermined amount to position said valve between the fully closed position and the fully open position.
A valve gate assembly for regulating a flow of molten material into a mold comprising:
- a movable pin that can move between a fully closed position and a fully open position;
- an actuator operatively attached to said pin for moving said pin and infinitely positioning said pin between the fully closed position and the fully open position;
- a detector for detecting a position of said pin and translating the position of said pin into a position signal;
- and
- a controller electrically connected to said actuator and said detector for receiving the position signal, translating the position signal into a control signal, and sending the control signal to said actuator, the control signal causing said actuator to incrementally move said pin a predetermined amount and position said pin between the fully closed position and the fully open position.
A valve gate assembly for regulating a flow of molten material into a mold comprising:
- a movable pin that can move between a fully closed position and a fully open position;
- an actuator operatively attached to said pin for moving said pin and infinitely positioning said pin between the fully closed position and the fully open position;
- said actuator comprising a core connected to said pin, at least one permanent magnet disposed about said core, and at least one electromagnet disposed about said permanent magnet for moving said pin;
- a detector for detecting a position of said pin and translating the position of said pin into a position signal;
- and
- a controller electrically connected to said actuator and said detector for receiving the position signal, translating the position signal into a control signal, and sending the control signal to said actuator, the control signal causing said actuator to incrementally move said pin a predetermined amount and incrementally position said pin between the fully closed position and the fully open position.
A valve gate assembly for regulating a flow of molten material into a mold comprising:
- a movable pin that can move between a fully closed position and a fully open position;
- an actuator operatively attached to said pin for moving said pin and infinitely positioning said pin between the fully closed position and the fully open position;
- said actuator comprising a core attached to said pin, a ball screw disposed about said core, a rotatable nut threadably engaged with said screw, and at least one electromagnet disposed about said nut and being operable to rotate said nut for moving said pin;
- a detector for detecting a position of said pin and translating the position of said pin into a position signal;
- and
- a controller electrically connected to said actuator and said detector for receiving the position signal, translating the position signal into a control signal, and sending the control signal to said actuator, the control signal causing said actuator to incrementally move said pin a predetermined amount and incrementally position said pin between the fully closed position and the fully open position.
Dependencies are inferred from the claim text.