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Description
Figure 1
Remotely Actuated Circulating A16A Inside Stripe Gun
Production Rate
Versions
Timers
Theory of Operation
E 2020 Nordson Corporation
See Figure 1. The A16A inside stripe gun is a pneumatically actuated gun
designed to coat the welded seam on three-piece cans. Use this gun with
both waterborne and solvent based can lacquers. The gun has an outside
diameter of 30 mm (1.18 in.) and can be used to stripe cans with diameters
as small as 35 mm (1.38 in.).
The A16A spray gun is uses a remotely located solenoid valve to actuate
(open and close) the gun. This configuration is recommended for
continuous spraying installations in which there is a minimal gap between
cans. Locally actuated versions of the gun, which are no longer available,
used a solenoid valve located in the gun body. These versions of the gun
were capable of striping at a rate of 700 cycles per minute.
Only a circulating, remotely actuated version is available. Service parts are
still available to repair and maintain obsolete versions.
The gun actuating solenoid can be triggered using a Nordson EPC-15 or
EPC-30 timer, or a Nordson NC-1 driver, or the iTRAX Spray Controller.
The EPC-15 and EPC-30 timers are non-spiking 24Vdc drivers. The NC-1
driver and iTRAX spray controller are spiking drivers and apply a 48VDC
sourcing PWM (pulse width modulation) output.
See Figure 2. The following is a description of how a typical system using
an A16A inside stripe gun(s) operates.
1. The proximity sensor detects a can as it passes and sends a signal to
the timer.
2. The timer receives the signal and triggers an electro-pneumatic solenoid
valve. The valve opens and pressurizes the air line to the gun.
3. The gun valve opens and heated coating material under pressure flows
through the nozzle and coats the welded seam of the can.
4. The timer shuts off the solenoid valve. The gun valve closes.
5. The cycle repeats when the proximity sensor senses the next can.
A16A Inside Stripe Gun
Part 107907-06
5
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