Nordson Corporation

Other

Horatio Quinones

Thomas L Ratledge

Erik A Fiske

Alec J Babiarz

Robert L Ciardella

Christopher L Giusti

Alan Ray Lewis

Mark S Meier

Stanley Cruz Aguilar

Stephen Russell Des Jardins

Mani Ahmadi

Robert James Wright

Phillip P Maiorca

Kenneth S Espenschied

Todd S Weston

Floriana Suriawidjaja

Ronald N Abernathy

Yuriy Suhinin

Michael Gorman

Ron Abernathy

Nicholas Anthony Barendt

James Everett Cooper, Jr

Patrick R Jenkins

Raymond Andrew Merritt

Naoya Ian Nagano

Joe Sherman

Clifford A Fowler

Philip P Maiorca

Joseph E Donner

Brian Sawatzky

Cutler Crowell, Iii

Jiangang Zhao

Rick Zakrajsek

Brad Perkins

Pat Hogan

Phil Maiorca

Liang Fang

Cutler Crowell

Tom Chang

George Vastola

Philip Paul Maiorca

Erik Fiske

Thomas Ratledge

Robert Ciardella

A fluid valve control system includes a linear actuator assembly with a linear actuator, a mechanical amplifier, and a mechanical output member; a fluid control valve, including: a valve body with a fluid chamber and an outlet aperture, a fluid supply line, a plunger member; a fluid reservoir with a pressurized fluid, and a fluid dispensing control unit; such that the fluid flows in a flow from the fluid supply line into the fluid chamber and out via the outlet aperture; such that plunger member moves vertically downward when the outer end of the plunger member is impacted by the mechanical output member, such that an inner end of the plunger member blocks the outlet aperture, such that the flow of the fluid is interrupted.

Fluid control valve system and device for intermittently stopping fluid flow

Methods for applying fluid materials to a substrate, such as circuit board, while continuously moving the fluid dispenser are disclosed. Initially, a dispenser is continuously moved through a constant motion trajectory connecting the plurality of dispense locations on the substrate. The electrical output signals generated by one or more of encoders of the dispenser are monitored as the dispenser is continuously moved through the constant motion trajectory. The dispenser is triggered at each of the plurality of dispense locations and droplets of the fluid material are jetted while continuously moving the dispenser. The spatial coordinates of each droplet of the fluid material on the substrate are measured and compared to expected landing coordinates for each droplet of the fluid material to generate a spatial error for each droplet of the fluid material. At least one dispense location is corrected and an updated constant motion trajectory is generated.

Methods for continuously moving a fluid dispenser while dispensing amounts of a fluid material

A jetting device and/or fluid module include a module body defining a passageway extending through the module body and also partially defining a fluid chamber, a nozzle supported by the module body, a valve element at least partially within the fluid chamber, a biasing element contacting the valve element and also contacting the module body, and a sealing member contacting the periphery of the valve element and configured to partially define the fluid chamber. The nozzle defines a fluid outlet that is in fluid communication with the fluid chamber. The valve element has an upper portion outside of the fluid chamber that is adapted for contact with the drive pin, and the biasing element is configured to apply a spring force to the valve element. The valve element is configured to cause a droplet of the fluid to be jetted from the fluid outlet when the valve element is moved in the direction toward the nozzle.

Modular jetting devices

A system for fluid dispensing control includes a fluid dispensing control device, a fluid dispenser, and a fluid flow meter, such that an intelligent parameterization of the dispensing system includes process variables, which characterize system behavior. The parameterization is used in convergence schemes for attaining defined fluid dispensing targets. Further, the parameterization is used to attain a consistent volumetric fluid dispensing by utilizing feedback controls. A fluid dispensing device includes a processor, a non-transitory memory, an input/output, a dispensing controller, a flow monitor, a parameterization manager, and a data bus. Also disclosed is a method for fluid dispensing control, including: a parameter sweep, logging system response data, processing response data, calculating system response function, calculating dispensing parameters, assessing intrinsic variation, determining variation band, controlling fluid dispense process response, and normalizing mass/volume fluid flow.

System, device, and method for fluid dispensing control

Methods and systems of accurately dispensing a viscous fluid onto a substrate. In an embodiment, a method includes using an electronic flow meter device to produce electrical flow meter output signals and performing a responsive control function in a closed loop manner by adjusting at least one dispensing parameter to correct for a difference between an output data set and a reference data set. In another embodiment, a system includes a control operatively coupled to a gas flow meter device and to a weigh scale allowing for a density of an amount of viscous material to be determined. In another embodiment, a method includes using a control coupled to both a gas flow meter device and a weigh scale and performing a responsive control function in a closed loop manner by adjusting at least one dispensing parameter using gas flow meter output signals and weigh scale output signals.

Flow metering for dispense monitoring and control

A jetting device and/or fluid module includes a nozzle with a fluid outlet, a body including a fluid chamber and a fluid inlet in fluid communication with the fluid chamber, and a valve seat disposed in the fluid chamber, where the valve seat includes an opening in fluid communication with the fluid outlet. The jetting device also includes a movable element having a top portion and a bottom portion, where the top portion is disposed external to the fluid chamber and arranged to be contacted by a reciprocating drive pin, and where the bottom portion is disposed within the fluid chamber. Finally, the jetting device also includes a sealing member contacting the movable element between the top portion and the bottom portion, where the sealing member also contacts the body, and defines a portion of a boundary of the fluid chamber to seal the fluid chamber.

Methods for applying fluid materials to a substrate, such as circuit board, while continuously moving the fluid dispenser. Some methods generally involve correcting the dispense location for each of the dispensed amounts of fluid material by executing a statistical comparison of either the predicted and actual landing locations on the substrate, or the predicted and actual positions of the dispenser at each of the dispense locations. Other methods generally involve initiating the dispensing of amounts of the fluid material at dispense locations corrected by a correction factor specified in terms of the servo cycle for the movement of the dispenser or by a correction factor specified in terms of partial servo cycles courtesy of a timer.

A viscous material noncontact jetting system has a jetting dispenser mounted for relative motion with respect to a surface. A control is operable to cause the jetting dispenser to jet a viscous material droplet that is applied to the surface as a viscous material dot. A device, such as a camera or weigh scale, is connected to the control and provides a feedback signal representing a size-related physical characteristic of the dot applied to the surface. The size-related physical characteristics of subsequently applied dots is controlled by heating and cooling, or adjusting a piston stroke in the jetting dispenser, in response to the size-related physical characteristic feedback. Dispensed material volume control and velocity offset compensation are also provided.

Viscous material noncontact jetting system

A non-contact jetting dispenser, viscous fluid dispensing system and method. The system includes a viscous fluid dispenser for dispensing the viscous fluid. The system further includes a viscous fluid supply container adapted to hold the viscous fluid. A flow path is provided for the viscous fluid between the viscous fluid supply container and an outlet of the viscous fluid dispenser. An electronic flow meter device is used to produce electrical output signals proportional to the flow rate of the fluid flowing through the flow path. A control is operatively coupled to the electronic flow meter for continuously receiving and processing the electrical output signals and performing a responsive control function in a closed loop manner.

Dispenser and method of dispensing and controlling with a flow meter

Modular devices for jetting a fluid material and components for modular jetting devices. The devices may include a pressurized air or positive displacement pump fluid supply module to supply a fluid module inlet. A syringe may feed material through a check valve to a positive displacement pump, which feeds material through another check valve to the fluid module. Inside the fluid module is a valve element moved to contact a valve seat and jet a droplet of material by contact between an external drive pin and a movable element of the fluid module. Either a piezoelectric actuator, a pneumatic actuator, or another actuator may move the drive pin. A controller may coordinate the supply of fluid from the positive displacement pump with the rate at which material is jetted. The fluid module and positive displacement pump are easily removable from the jetting device.

Methods for applying an underfill with vacuum assistance. The method may include dispensing the underfill onto a substrate proximate to at least one exterior edge of an electronic device attached to the substrate. A space between the electronic device and the substrate is evacuated through at least one gap in the underfill. The method further includes heating the underfill to cause the underfill to flow into the space. Because a vacuum condition is supplied in the open portion of the space before flow is initiated, the incidence of underfill voiding is lowered.

Methods for vacuum assisted underfilling

Automated systems and methods for priming a fluid chamber of a fluid dispensing valve with fluid from a fluid material source that includes a vacuum source, a valve priming station, a vacuum switch, and a controller. The valve priming station has a boot, a vacuum chamber, and a vacuum channel in the boot. The vacuum channel connects with the vacuum source via the vacuum chamber. The boot sealingly engages a valve nozzle of the fluid dispensing valve so that the vacuum chamber connects the vacuum source with the fluid chamber. The vacuum switch couples with the vacuum channel via the vacuum chamber and has an opened and closed position based upon a vacuum level in the vacuum chamber. The controller is electrically connected with the vacuum source and vacuum switch and controls priming of the fluid dispensing valve based upon whether the vacuum switch is opened or closed.

Automated vacuum assisted valve priming system and methods of use

Growing community of inventors

San Marcos, CA, United States of America

Horatio Quinones