Metro Weighing&Austomation : Linear Systems

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Linear systems derive their name from their linear feeding orientation. A basic linear system consists of a Bulk Feeder, Coarse Feeder, Fine Feeder, and a Scale Hopper.

The Scale Hopper weighs the product as it is being filled.

The Coarse Feeder is responsible for filling the majority of the product, while the Fine Feeder fills the remaining pieces in a more controlled manner to prevent overfilling.

The Bulk Feeder handles the bulk supply to the Coarse and Fine feeders.

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To increase the performance of a linear system, there are two enhancements that can be made:

Increase the number of hoppers

This concept splits the Scale Hopper into two separate Coarse and Fine hoppers. This allows the Coarse and Fine feeders to time share. While the Coarse Feeder is starting a new carton, the Fine Feeder is finishing off the previous carton.

Increase the number of lanes.

This concept effectively doubles the production by implementing two independent lanes. Each lane has its own Bulk, Coarse, and Fine feeders along with its own Scale Hopper. The lanes are interlocked, so only one can discharge at a time.

Although you can continually increase the number of lanes to gain production, it is recommended that you move to a multihead style Filling System for any application where two or more linear lanes are required.

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