NBC™ Flat Belt - IOM
P/N: 1118140 Rev: 07/29/2020 Page 13 of 129
NBC INTRODUCTION
NBC flat belt contact accumulation
1.5: NBC FLAT BELT ACCUMULATION AND TRANSPORTATION CONVEYOR
Concept and Operation
NBC flat belt conveyor is offered in contact accumulation and transportation versions.
The conveyor differences are as follows:
Contact Accumulation
The NBC contact accumulation zones are 4' long, but operate in such a manner as to allow mixed
length product to dense pack accumulate. The products are allowed to touch and bump, but are at
zero-pressure accumulation after they stop. The minimum speed for dense packing of product is 90
FPM for totes and 125 FPM for corrugated product.
The product-carrying rollers are driven by a nominal 1.75" wide belt. This belt is held in contact with
the underside of the carrying rollers by spring pressure roller channel assemblies, mounted on the
conveyor side channels.
Accumulation begins when a product blocks the first sensor from the discharge end. The first product
stops over the discharge sensor which “arms” the next sensor upstream while lowering the belt
pressure roller channel in that zone.
When a zone accumulates, each spring pressure roller channel assembly in that zone lowers by the
use of an air diaphragm. The belt is lowered away from the carrying rollers causing them to become
non-powered. Products are conveyed to the zone; then coast as they enter the non-powered area and
bump into the stopped downstream product. As accumulation takes place from zone-to-zone, the
accumulated products are at zero-line-pressure.
NBC contact accumulation
closes product gaps
To Next Page
Loading...
