Tuesday, January 8, 2008
It is usually anchored at one end to fixed gravity or automated conveyor, allowing the other end to be expanded out and flexed into trailers for more efficient loading and unloading. It is used extensively in shipping/receiving operations for package handling.
Portable, expandable and easy to use.
Expands and contracts to suit applications
Flexibility around obstacles
It provides flexible tool around production and despatch areas.
It is an ideal tool for temporary packing or manufacturing operations.
Used for merging, identifying, inducting, and separating products to be conveyed to specific destinations1) Diverter
It has stationary or movable arms that deflect, push, or pull a product to desired destination
It is usually hydraulically or pneumatically operated, but also can be motor driven
Advantages: Simple and low cost
2) Pop-up device
It uses one or more rows of powered rollers/wheels/chains that pop up above surface of conveyor to lift product and guide it off the conveyor at an angle;wheels are lowered when products not required to be diverted
It is only capable of sorting flat-bottomed items
Sliding shoe sorter (a.k.a. moving slat sorter) uses a series of diverter slats that slide across the horizontal surface to engage product and guide it off conveyor.
The slats move from side to side as product flows in order to divert the product to either side.
It requires gentle and gradual handling of the products
4) Tilting device
Trays or slats provide combined sorting mechanism and product transporter. It can accommodate elevation changes. It is usually designed in continuous loops with a compact layout and recirculation of products that are not sorted for the first time. It also carry products on flat-surface slat conveyor and can handle wider variety of products compared to tilt tray.
Trolleys are equally spaced in a closed loop path and are suspended from a chain
Carriers are used to carry multiple units of product
Does not provide for accumulation
Commonly used in processing, assembly, packaging, and storage operations
It is used for low-frequency intermittent vertical transfers (vertical chain conveyor can be used for continuous high-frequency vertical transfers. Carrier used to raise or lower a load to different levels of a facility (e.g., different floors and/or mezzanines).
It can transport goods up or down; throughputs up to 30cpm (cycles per minute)
Minimal footprint and very quiet.
Complex in-feed synchronization
More expensive than reciprocating vertical conveyors.
2) Reciprocating Vertical Conveyor
It utilizes gravity-actuated carrier to lowering loads, where the load overcomes the magnitude of a counterweight. It can only be used to lower a load.
An alternative to a chute conveyor for vertical "drops" when load is fragile and/or space is limited. It can be manually or automatically loaded and/or controlled and can interface with horizontal conveyors
up or down or dual cycle
multiple cartons per lift
very quiet and lower cost compared to vertical conveyors
Limited throughputs depending on height of conveying distance; and
It must accumulate prior to in-feed.
2) Carrier-System Pneumatic Conveyor