Abstract An improved automatic fluxing system is disclosed for applying flux to articles on a production line basis. The system includes an automatic spray gun with a movable mounting for directing the flux onto articles being presented to the spray gun by a conveyor. The system includes automatic nozzle controls and a flux supply system for the nozzle, particularly adapted for handling corrosive, abrasive and highly viscous fluxes. The flux supply system includes a special pump for continuously circulating flux in the reservoir in addition to continuously supplying flux to the nozzle. The circulating reservoir eliminates the need for flux agitators and also permits the flux to be heated and maintained at a uniform pre-set temperature making the flux supply independent of pump induced temperature variations and of temperature related viscosity changes.
In a fluxing system for spraying a relatively viscous and corrosive liquid coating of flux of predetermined depth and area on articles using a spray nozzle, an improved nozzle mounting and liquid flux supply means comprising the combination of: a spray nozzle; a relatively tall and narrow reservoir for the liquid flux; a thermostatically controlled heater positioned in said reservoir; a spiral conveyor pump having a corrosion resistant spiral rotor and having its input coupled to a lower portion of the reservoir; a conduit coupling the output of said pump to an upper portion of said reservoir; a second conduit coupling said pump output to an upper portioN of said reservoir and passing through a fluid supply cavity in said spray nozzle; a movable support for said nozzle; a drive motor coupled to said nozzle support; and control means for said motor and said nozzle including a sensor positioned for activation by the articles.
Claim 2
Dependent Claim
154 words
In a fluxing system for spraying a relatively viscous and corrosive liquid coating of flux of predetermined depth and area on articles using a spray nozzle, an improved nozzle mounting and liquid flux supply means comprising the combination of: a spray nozzle; a relatively tall and narrow reservoir for the liquid flux; a thermostatically controlled heater positioned in said reservoir; a spiral conveyor pump having a corrosion resistant spiral rotor and having its input coupled to a lower portion of the reservoir; a conduit coupling the output of said pump to an upper portion of said reservoir; a second conduit coupling said pump output to an upper portioN of said reservoir and passing through a fluid supply cavity in said spray nozzle; a movable support for said nozzle; a drive motor coupled to said nozzle support; and control means for said motor and said nozzle including a sensor positioned for activation by the articles.
Claim 3
Dependent Claim
17 words
The fluxing system as claimed in claim 1 which further comprises a timer in said control means.
Claim 4
Dependent Claim
21 words
The fluxing system as claimed in claim 1 which further comprises a manual control switch coupled in parallel with said sensor.