Viscous material dispensing machine having programmed positionin

Details Viscous material dispensing machine having programmed positionin Viscous material dispensing machine having programmed positionin

1985-09-30

1986-04-29

Beck, Shrive P.

Coating apparatus

Program, cyclic, or time control

Having prerecorded program medium

118679, 118696, 118704, 118610, 901 43, B05C 0000

Patent

active

045849641

ABSTRACT:
A machine for dispensing a viscous material in a predetermined pattern onto a surface. A nozzle in the form of a chemical dispensing tip (hollow needle) is positioned in three spatial coordinates by servomechanisms controlled by a pre-programmed digital process controller. The controller also controls the emission of the viscous material through the nozzle according to a predetermined pattern of deposition. The apparatus includes vacuum/pressure pumping for degassing the viscous material in a holding tank and subsequently pressurizing it for delivery through the nozzle. A poppet type valve and actuating solenoid deterine the viscous material flow and an output chamber in communication with the nozzle includes a diaphragm and spring arrangement to provide a draw-back action when the poppet is closed to prevent dripping from the nozzle.

REFERENCES:
patent: 1994269 (1935-03-01), Bonniksen
patent: 2960060 (1960-11-01), Chatterton
patent: 3731648 (1973-05-01), Gerber et al.
patent: 3785898 (1974-01-01), Gerber et al.
patent: 3895748 (1975-07-01), Klingenberg
patent: 3909831 (1975-09-01), Marchio et al.
patent: 3943527 (1976-03-01), Hartmann
patent: 4056075 (1977-11-01), Seiderman

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