Nordson Corporation

Kamal Kumar

James E DeVries

Robert S Belser

A dispensing system includes a robot that controls the positional location of a dispenser that dispenses a bead of material, such an adhesive, onto a substrate and wherein a sensor monitors the geometric configuration of the material dispensed. The dispensing system also includes a control circuit which receives information from the sensor so as to monitor geometric characteristics such as height, width and cross sectional area in such a manner that statistical process data can be gathered and also to provide alarm indications whenever the height or width of the bead do not comply with predetermined characteristics. The control circuit also provides a closed loop feedback system so that the supply of material and the nozzle can be controlled in such a manner to modify the flow of bead material whenever a discrepancy or error is detected by the control circuit.

Method and apparatus for monitoring and controlling the dispensing of

A dispensed bead (10) of material is disposed between a sensor pair (14) for monitoring the bead. The sensor pair (14) transmits a beam of light towards the bead of material. A signal is generated which corresponded to the amount of light received. By utilizing this signal, gaps or other discontinuities can be found. This signal can also be used to determine the height of the bead and generate a profile thereof. The signal can be used in a closed loop feedback control system to control the amount of material dispensed from the dispenser.

Growing community of inventors

Lorain, OH, United States of America

Kamal Kumar