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US 7,000,853 B2Granted
System and method for control of fluid dispense pump
AssigneeDL Technology, LLC.
InventorJeffrey P. Fugere
Life of this patent
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AssigneeDL Technology, LLC.
InventorJeffrey P. Fugere
Estimating the term…
In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a direction along a longitudinal axis of the feed screw to enhance consistency in material flow through the cartridge. The feed screw is preferably driven by a closed-loop servo motor to achieve high-performance dispensing resolution. The assembly is preferably compatible with fixed-z and floating-z cartridges. A optional vented dispense tip, in combination with the fluid pump, allows for repeatable deposit of fillet patterns while maintaining optimal consistency. A dispense controller allows for reverse-compatibility such that the fluid pump of the present invention can be mounted to, and controlled by, conventional pump position controllers.
A method for controlling a fluid dispensing operation comprising:
A dispensing controller for a fluid dispensing pump including a feed screw driven by a motor having indexed rotational positions, the dispensing controller for controlling a dispensing operation of a pump, the dispensing controller receiving a pump-control signal comprising a time-duration-based signal, and in response, generating an index signal for the motor for controlling rotation in the motor based on the indexed rotational positions, the pump control signal received from a position controller that controls the position of the pump relative to a substrate.
A system comprising:
Dependencies are inferred from the claim text.