Design evaluation of two-roller conveyors for semi-self-flowing transportation

Abstract

In conveyors utilizing the principle of semi-self-flowing transportation, parts are put on a surface moving in the lateral direction by means of vibration or on two rollers rotating in opposite directions. Advantages of the latter one are that parts can be supplied on demand and a very small angle of inclination is required (less than 3°). Formulae found in scientific literature for the velocity of transportation as a function of the roller velocity give large discrepancies with experimental results. Extensive experimental modelling allows the dependence of the frictional coefficient on the shape of parts and the contact angle to be established. A new mathematical model of the conveyor has been developed and a new formula for the velocity of transportation has been derived, which is in good agreement with experimental data.

Keywords

two-roller conveyor velocity of transportation friction contact angle new mathematical model

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