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(3) During nailing (II) (Fig. 8)
1 When the piston moves down inside the cylinder,
the air under the piston flows through air passage
(C) under the cylinder and is accumulated in the
return air chamber together with the compressed
air flowing in through the cylinder hole.
2 When the compressed air in the left chamber of the
feed piston moves the feed piston fully to the right,
the nail feeder (feed pawl) engages the next nail.
(4) After nailing (Fig. 9)
1 When the trigger is released, the plunger goes
down, the air supply vent opens, the valve piston
goes up, and the compressed air in the
accumulator passes through air passage (A) into
the head valve upper chamber. The head valve is
then pushed down by the head valve spring and
the air pressure applied on the upper surface of the
head valve. At the same time, the exhaust valve
opens and the upper chamber of the cylinder is
opened to the atmosphere.
2 When the head valve seals the upper surface of
the cylinder, the compressed air accumulated in
the return air chamber passes through air passage
(C), is applied to the lower surface of the piston,
and forces the piston to return upward to its
original position. Also, the compressed air at the
upper surface of the piston is exhausted through
the head valve hole.
3 The compressed air accumulated in the left
chamber of the feed piston passes through air
passage (B), goes into the return air chamber, and
is then exhausted through the tail cover hole. The
feed piston is then moved to the left by the force of
the feed spring, and the feed pawl feeds the next
nail into the ejection port. This completes one full
nailing cycle.
Cylinder
[Return air
chamber]
Air passage
(C)
Piston
Nail feeder
Cylinder hole
Fig. 8 During nailing (II)
[Return air
chamber]
Piston
Head valve spring
Head valve
Cylinder
Air passage (A)
Fig. 9 During return
Feed piston
Nail feeder
Air passage (C)
Feed piston
Feed spring
Plunger
Trigger
Valve piston
Air supply vent
[Accumulator]
Head valve hole
Summary of Contents for NV 50AG2
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