Dispensing nozzle design and dispensing method thereof
View Patent ↗An apparatus for dispensing fluid includes a fluid source; a nozzle having an inner layer and an outer layer, the inner layer defining a bore in fluid communication with the fluid source; and a plurality of pins each moveable to be in physical contact with the outer layer, wherein the plurality of pins is operable to apply a force towards the outer layer to adjust a cross-section of the bore.
1. An apparatus for dispensing fluid, comprising:
a fluid source;
a nozzle having an inner layer and an outer layer, the inner layer defining a bore in fluid communication with the fluid source; and
a plurality of pins each moveable to be in physical contact with the outer layer, wherein the plurality of pins is operable to apply a force towards the outer layer to adjust a cross-section of the bore, and wherein the inner and outer layers are made of elastic material.
2. The apparatus of claim 1 , wherein each of the plurality of pins is moveable in a direction perpendicular to a longitudinal axis of the bore.
3. The apparatus of claim 1 , wherein each of the plurality of pins is movable by applying a gaseous pressure.
4. The apparatus of claim 1 , wherein the elastic material of the inner layer is more rigid than that of the outer layer.
5. The apparatus of claim 1 , wherein the inner and outer layers form a cavity that can be inflated by pumping in gas.
6. The apparatus of claim 1 , wherein the cross-section of the bore is adjustable to vary in shapes.
7. The apparatus of claim 6 , wherein the shapes are selected from triangle, rectangle, square, circle, oval, and polygon.
8. The apparatus of claim 1 , wherein the cross-section of the bore is adjustable to vary in cross-sectional areas along a longitudinal axis of the bore.
9. The apparatus of claim 1 , further comprising:
a gas outlet nozzle in a proximity region of an orifice of the nozzle, wherein the gas outlet nozzle is operable to increase an ambient pressure in the proximity region.
10. The apparatus of claim 1 , further comprising:
a moveable arm attached to the nozzle, the moveable arm being operable to move the nozzle horizontally and vertically.
11. The apparatus of claim 1 , further comprising:
a rotatable platform to hold and rotate a substrate to coat with the fluid dispensed from the nozzle.
12. The apparatus of claim 1 , wherein the plurality of pins is separated from the inner layer by the outer layer.