公开(公告)号：US12145161B2

公开(公告)日：2024-11-19

申请号：US17251509

申请日：2019-06-25

Applicant: NORDSON CORPORATION

Inventor： Andrew Felber ,  Richard Murphy ,  Frederick Doering

IPC: B05B12/00 ,  B05B1/30 ,  B05B12/08 ,  B05C5/02 ,  G05D3/12

Abstract: Systems and methods of controlling movement of a moving part of an applicator for jetting material from the applicator are disclosed. The method includes actuating a piezoelectric device operatively connected to a needle by providing a voltage waveform to the piezoelectric device, such that the needle translates along a positional path in a first dispensing operation. The method also includes sensing positions of the moving part over a period of time, where the positions define a time-dependent positional profile of the moving part, and receiving parameters for a second dispensing operation. The method also includes determining a required voltage waveform to be applied to the piezoelectric device to perform the second dispensing operation, and adjusting the voltage waveform provided to the piezoelectric device to match the required positional profile.

公开(公告)号：US11975351B2

公开(公告)日：2024-05-07

申请号：US17424530

申请日：2020-01-21

Applicant: NORDSON CORPORATION

Inventor： Jeff Groene ,  Richard Murphy ,  Robert Carvahlo

IPC: B05C11/10 ,  B05B1/08 ,  B05B12/00 ,  B05C5/02

CPC classification number: B05C11/1034 ,  B05B1/083 ,  B05B12/004 ,  B05C5/0225

Abstract: Applicators and methods for dispensing material are disclosed. The applicator includes a syringe defining an inlet, and outlet, a chamber extending from the inlet to the outlet, a plunger disposed within the chamber, and a piston attached to the plunger, where the piston is configured to move the plunger through the chamber. The applicator also includes an actuation mechanism configured to linearly translate the piston through the chamber so as to dispense material through the outlet, a sensor attached to the plunger, where the sensor is configured to sense a linear movement of the plunger, and a controller configured to adjust operation of the actuation mechanism based on the linear movement sensed by the sensor such that the piston repeatedly dispenses a predetermined amount of the material from the outlet of the syringe over a plurality of dispense cycles.