Back to results
US 5,630,552 AGranted
Paint dosage device for program controlled spray painting system
AssigneeABB Flexible Automation, Inc.
InventorsOle A. Anfindsen, Alf Sunde
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeABB Flexible Automation, Inc.
InventorsOle A. Anfindsen, Alf Sunde
Estimating the term…
A paint dosage device is particularly adapted to be mounted in close proximity to a spray gun (P) in a program controlled spray painting installation for dosed paint supply to the spray gun. The device includes at least two dosage cylinders (SA,SB), each having a regulating piston (PA,PB) connected to a piston departure position and displacement velocity regulator (RA,MA:RB,MB) for setting the paint filling amount of the associated cylinder by controlled adjustment of the departure position of the regulating piston in the cylinder, and for setting the dosage rate of the cylinder when supplying paint to the spray gun, by program controlling the displacement velocity of the regulating piston in the cylinder. A valve assembly (V1,V2,V3,V4) is arranged for connecting the cylinders (SA,SB) alternately to the spray gun (P) and putting the cylinder disconnected from the gun in connection with means for cleansing and paint filling apparatus. This paint dosage device is particularly suitable for application in the case the spray gun is provided with high tension electrode (E) for electrostatically charged atomizing of supplied electrically conductive paint. Each regulating piston (PA,PB) of the cylinders is then connected with the a piston departure position and displacement velocity regulator by means of an electrically insulating motion-transferring connection (IA,IB) and each valve (V1,V2,V3,V4) of the valve assembly is made electrically insulating.
A spray painting apparatus adapted for dosed supply of electrically conductive paint to a spray gun, the spray gun being provided with a high tension electrode for electrostatically charged atomizing of electrically conductive paint supplied thereto:
A valve for a spray painting apparatus adapted for dosed supply of electrically conductive paint to a spray gun, the spray gun being provided with a high tension electrode for electrostatically charged atomizing of electrically conductive paint supplied thereto, comprising a valve housing and a movable valve member, the valve housing having an internal bore in communication with a valve inlet and a valve outlet connected by a portion of said bore, wherein the movable valve member is a plunger closely fitted in said bore and disposed for alternatively closing and opening said valve inlet and valve outlet, and the bore is furnished with a sealing gasket resting against the movable valve member and positioned in a surface of the bore outside of said portion of the bore connecting the valve inlet and valve outlet.
Dependencies are inferred from the claim text.