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User's Manual—Sonic Knife
Classification: Avery Dennison - Public
4. As the knife body assembly faces resistance from material
under the knife, it stops. However, the knife shaft continues
moving the spring nut down against the pressure spring. The
pressure spring presses down on the knife body assembly.
5. With the knife stopped and the spring nut compressing the
spring, the knife shaft end continues moving down and
separates from the knife body assembly.
Notice the dwell gap between the knife body assembly and the knife shaft
end as shown under the red circle when the knife is fully compressed. See
dwell gap missing and the spring elongated when the knife is raised.
Proper spring pressure and dwell are set at the factory. However, adjustment
may be necessary from time to time. The factory settings are as follows:
Sharp Blade spring height - .750"
Dwell is measured while the knife blade assembly is fully
compressed against the sonic horn.
Spring height is measured when the knife blade assembly is in
the "up" position.
FIGURE 11
Dwell - .015"
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