PA Industries Precision AirFeed - Manual (Page 11)

9
CONTROLLING THE FEED
The Feed Cycle is then controlled by a cam operat-
ed 3-Way Spool Valve and a Linear Cam mounted
on the Press Ram, or by a Rotary Cam mounted on
the crankshaft. REMOTE PNEUMATIC ACTUATION
By removing the Mechanical Actuating Valve
Assembly, the timing control of the feed cycle can be
changed by installing the optional Piston Operated
Valve (POV).
LINEAR CAM OPERATION ROTARY CAM OPERATION
AIR CONNECTION FROM PISTON
OPERATED VALVE TO COMMON
(“CYL”) PORT OF SPOOL VALVE
MALE CONNECTOR AT
VALVE PILOT AIR PORT
PISTON OPERATED VALVE
CONNECTION
3-WAY ON/OFF
SELECTOR VALVE
RECOMMENDED
1/4” (6MM) POLYFLO TUBING LINEAR CAM/BRACKET
TEE FITTING AT AIR INLET
AIR SUPPLY
CAM OPERATED 3-WAY
SPOOL VALVE
AIR CONNECTION
FROM TEE TO NORMALLY
CLOSED (“IN”)