The new OPTIMA WF X-9 weighing filler is a high speed rotary system
that performs 100% gravimetric filling instead of the conventional
volumetric filling with downstream check weighing.
The enabling technology is ELAU's proven ability to operate multiple
servos on rotating carousels using a single cable. It's the same
technology behind the invention of servo rotary cappers and labelers.
Combined with continuously rotating load cells that compensate for
centrifugal forces, the servo-driven shut-off flaps provide precise,
independent control for each vibratory filling head.
The benefits are several, beginning with reduced give-away that in
itself provides a cost justification for integration into existing
machines. This accurate weight regulation is achieved without manual
intervention, further reducing operational costs. And because
underweight packages are prevented, the labor for removal and disposal,
along with scrap itself, are reduced.
Perfect for OEE process improvement
The potential for this gravimetric filler to impact Overall Equipment
Effectiveness (OEE) would not be lost on anyone who's attended one of
the ELAU-sponsored Packaging Line Performance
Instructor Paul Zepf urges students to analyze their packaging lines
and find the low-hanging fruit of unnecessary scrap and labor. By
preventing rather than correcting the problem, OPTIMA's gravimetric
filler provides a straightforward retrofit to optimize operations.
Tool-less weighing hopper changeovers complete the OEE improvement equation.
Each filling head is independently adjusted and continuously
self-optimizing, compared to a central volume adjustment in volumetric
An automatic zero point correction eliminates variations in weight
caused by product deposits. Variations in bulk density or in flow
rating are compensated for during the filling process.
Each portioning head controls its own average weight value. An
automated learning process is used to compensate for centrifugal forces
and position-related faults.
The WF X-9 demonstrated at interpack is a 9-head filler, but
configurations are available from 8 to 16 heads with output up to 320
containers per minute, depending on the number of filling heads and
fill weights. Weighing heads can perform up to 20 weighings per minute.
Weight capacity is up to 7500 grams. A large variety of container
shapes and materials can be handled and filled, with filling volumes up
to 10 liters.