Page 27 - 2017AAA Perfect Pallet Wrapping_v24 verison 3

The flexibility of automatic tension adjustment programming is
unique to Omni Pallet Wrapping machines.

Load Cell System

Another one of the many distinctions of the Omni machines
compared to other machines use a dance roll system in contrast to
our load cell system.

To prevent the problem of the acceleration, it can be either
minimised or the reactiveness can be increased. The first option is
preferred for the dancing roller system as when the roller moves, it is
detected by a sensor and moves it forward. The more movement
made, it causes a bigger signal to the sensor. The increase of film
request makes the dancer roller move which increases the speed
of the motor. The movement of the dancer roller compensates the
delay of the motor. In other words, the dancer roller is a mechanical
way to compensate a mistake in giving film.

The Omni machines rollers are mounted on a load cell that
measures the pulling force from the pallet. As soon as the request of
film from the pallet increases, the signal from the load cells increases
as well and the motor goes faster. As a result of nothing in between
our load cell system it makes it much faster than the speed of a
dancer roller. Therefore, the dancing roller is needed
to compensate a mistake, the load cell doesn’t make the mistake.
To make our system even more reactive, we eliminated the
gearbox, so the motor drives directly the roller.

Another unique advantage of our machines is that you can select
the film tension by the control panel. With the dancer roller system,
you can only make the dancer roller harder to move forward and this
is usually done by a spring and a knob. Consequently, the dancer
roller system is unable to set different wrapping tensions
during the cycle.

The flexibility of tension adjustment programming enables wrapping
unstable and light weight pallets with ease. Tests have proven that
trying to wrap light weight products on other machines, the pallet is
pulled of the turn table as you are unable adjust tension correctly.
In comparison to wrapping the same weight product on an Omni
machine, due to its adjustable tensioning features the pallet is
wrapped with no movement problem.