Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1975-08-06
1977-10-18
Blunk, Evon C.
Conveyors: power-driven
Conveyor section
Endless conveyor
198859, B65G 2318
Patent
active
040542025
ABSTRACT:
In a stepwise drive mechanism of the type comprising a pair of endless coying members, such as for example metal chains, which are formed of a magnetic or magnetizable material, with gripping elements mounted thereon and in which the conveying members are located parallel to one another with the gripping elements fixed temporarily to a plastic film in which receptacles are formed and traverse a machine for processing food and/or pharmaceutical products having different work stations positioned at intervals whose length is a multiple of the feed steps of the drive mechanism, a drive is provided for synchronously driving the conveying members. This drive includes drive wheels respectively located in contact with a corresponding conveying member or chain along a predetermined arc and a drive arrangement for intermittently rotating the drive wheels through an elementary angular displacement which corresponds to a feed step of the conveying members. The conveying members are applied, along a predetermined arc, to their associated drive wheels over at least a contact surface area located on the peripheral portion of their associated drive wheels. A magnetic arrangement is provided in the driving wheel for producing a system of magnetic forces whose directions are substantially perpendicular to the contact surface area and whose resultant intensity is sufficient to prevent relative movement of the driving wheel and its associated conveying member. The contact surface area is annular and rotates about the axis of rotation of the drive wheel, with the drive wheel. The magnets in the drive wheels attract and hold the conveying members or chains to the contact surface of the driving wheels along the predetermined arc under the action of the magnetic pull which they produce.
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Blunk Evon C.
Eslinger Lewis H.
Societe Anonyme dite: Etude et Realisation de Chaines Automatiqu
Thomson Richard K.
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