Automated adhesive spray timing control

Details Automated adhesive spray timing control Automated adhesive spray timing control

1997-06-02

1999-07-13

Simmons, David A.

Coating apparatus

Program, cyclic, or time control

Having timer

118712, 118679, B05C 1100

Patent

active

059221321

ABSTRACT:
A system for improving accuracy of application of a fluid to a desired area of an object which is moving transversely to the direction in which the fluid, e.g., an adhesive, is emitted from a nozzle via an electrically actuated valve. Photoelectric or other such detecting means are positioned in known distance from the nozzle to generate a signal in response to presence of fluid at that position. The delay time between detection of the moving object at a predetermined position and generation of the signal to open the valve is varied commensurately with the time period between generation of the valve-opening and fluid-detection signals of the preceding cycle. The variable delay time thus reflects more accurately the actual electrical and mechanical response times of the valve as opposed to an estimated, fixed delay time. A second detector may be spaced a predetermined distance along the path of adhesive flow from the first detector to provide measurement of fluid velocity.

REFERENCES:
patent: 4500937 (1985-02-01), Matt
patent: 5380366 (1995-01-01), Becker et al.

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