EZ-Air Technology
Firing ForceFinal ForceFiring Force = Final Force Figure 1, above,shows an incorrect balance of firing force to air pressure setby an operator after cleaning the electrodes,on a traditional weld head,resulting in poor set-up and force control. EZ-AIRinsures correct set-up and good force control as seen in Figure 2,above. The Miyachi Unitek EZ-AIRrequires no balancing of air pressure as theair pressure is constant once the firing force is reached.
The following series of simplified diagramsexplain how the EZ-AIRweld force control system works through independent control of upperand lower air chambers.
The EZ-AIRweld force control system simplifiesthe set-up process to a single adjustment and
helps prevent weld over-force by closing off
the input air when the actual weld force reaches
the programmed weld force level,delivering
accurate force control which is repeatable
across multiple weld heads without complex
setup or operator training.•Firing force is important because it controlscontact resistances and,therefore,heat
generation at the industrial electrode-to-part and
part-to-part interface.•Superior force control = process stabilityand higher production yield with reduced
maintenance time.
Electrode reaches weld force – both
industrial solenoid valves closewithin 4ms and air pressure is trapped in both the upper andlower chambers.Weld force remains constant since the aircylinder piston cannot move.
Compression spring provides
instantaneous follow-up. Electrode moves down – air pressure in the upper chamberforces the piston down.Waste air exhausts from the lower
chamber. Electrode up position – air pressure in the lower chamberkeeps the piston in the up position.Waste air exhausts from
the upper chamber. EZ-AIRforce control technology is availablewith Miyachi Unitek Thin-Line weld heads
as original equipment and as a retrofit
for previously purchased Thin-Line airactuated weld heads. See the OrderingGuide for more information.
EZ/DAK Dual Air KitEZ/SAK Single Air Kit 7