A powered roller conveyor is a type of roller conveyor that uses an external power source, typically an electric motor, to drive the rollers and move items along the system. Unlike gravity or unpowered roller conveyors, it provides precise control over speed, direction, and movement, making it ideal for automated and heavy-duty applications. Below is a detailed overview of its design, features, advantages, disadvantages, and applications.
Conveyor Rollers
- Made from durable materials like steel, aluminum, or plastic, depending on load requirements. Steel rollers handle heavy items, while plastic suits lighter or delicate goods.
- Some rollers are powered directly (e.g., via internal motors), while others are driven by belts, chains, or shafts.
Drive Mechanism
- Motorized Rollers: Individual rollers may contain built-in motors (e.g., 24V DC motorized drive rollers) for precise control.
- Belt or Chain Drive: A motor drives a belt or chain that connects multiple rollers, turning them in unison.
- Line Shaft: A single shaft runs beneath the rollers, powered by a motor, with bands or belts linking it to each roller.
Conveyor Frame
- Constructed from steel or aluminum for strength, supporting the rollers and the weight of the load. Can be straight, curved, or inclined.
Control Systems
- Equipped with sensors, programmable logic controllers (PLCs), or variable frequency drives (VFDs) to regulate speed, start/stop functions, and accumulation zones.
Roller Spacing
- Adjustable spacing ensures smooth transport of items, tailored to their size and stability to prevent tipping or jamming.
Safety Features
- Includes emergency stop buttons, guards, or sensors to detect jams and halt operation, protecting workers and goods.
Accumulation Capability
- Some designs feature zones where items can stop and accumulate without pressure (zero-pressure accumulation), ideal for buffering or sorting.
Modularity
- Sections can be added, reconfigured, or combined with curves and merges to suit complex layouts.