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1) Accumulation conveyor

Any conveyor designed to permit accumulation of packages, objects, or carriers.  May be roller, live roller, roller slat, belt, vibrating, power-and-free or tow conveyors.

2) Zero pressure accumulation conveyor

A type of powered conveyor accumulation. Zero pressure accumulation is that which occurs when the driving force is completely removed form the load. This is usually accomplished by way of sensors in combination with various mechanical means such that when a load is stopped on a sensor, the driving force in the zone behind the stopped load is dropped away. When the next load is driven into the now dead zone, it too will stop, causing a like chain reaction upstream, or until such time that the first stopped load is released and moves on. Discharge from an accumulation point can be either one load at a time or a so-called slug discharge, where a pre-specified number of loads are released at one time.

3) Minimum pressure accumulation conveyor

Conveyor minimum pressure accumulation is when product is accumulated and the driving force is not removed. It is called minimum pressure because the pressure of the driving force is kept to a minimum. Pressure will build up as more product accumulates, but can be overcome with controls designed specifically for the application. The advantage to minimum pressure conveyor is a higher discharge or single load release rate than with zero pressure accumulation.

4) Non-contact accumulation conveyor

Non -contact accumulation on a conveyor occurs when the product is accumulated with a definite space between each accumulated load. This is accomplished by controlling the speed of the carrying surface. Most zero pressure conveyors are of the non contact type.