Pallet and stack detection with light beam between two rollers

Description

Pallet and cardboard stacks on roller conveyors must be reliably detected. To do this, light scanners are mounted under the conveyor system. The light scanner detects the transport material from bottom to top from between two rollers which are a maximum of 6 mm from each other. The light scanner transmitter beam cannot be diffused, for example due to falling pollutants.

Solution

The HRT 46B diffuse reflection light scanners are used here. The HRT46B/4.11-S12 type was specially modified for this application. A thin slit diaphragm over the transmitter enables the light to pass unobstructed through the 6 mm wide gap in the roller conveyor. No light is reflected from the glossy rollers back to the receiver. An additional, specially-formed internal diaphragm ensures that the light beam is hardly influenced by soiling and it cannot cause a malfunction.

Toegepaste producten

  • Branche/vakgebied

    Conveyor and storage systems (continuous conveyor)

  • Taakomschrijving

    Presence inspection

  • Applicatie

    Pallet and stack detection with light beam between two rollers