Rail conveyor for foundry molding boxes

Metal founding – Means to shape a forming surface – Including means applying vacuum directly to mold material

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Details

164255, 164324, B22C 1522

Patent

active

040362833

ABSTRACT:
An improvement in a rail conveyor apparatus. The improvement is composed of a plurality of rail conveyor trucks coupled together and movably supported on a track with at least one foundry molding box being mounted on each rail conveyor truck. Each of the foundry molding boxes has a connector member thereon having first and second ends. A conduit connects the first ends of the connector members on each of the rail conveyor trucks. A vacuum source and another conduit is provided for coupling the vacuum source to a pair of coupling members. Valves are provided in the second-mentioned conduit for alternately connecting the coupling members to the vacuum source. Coupling devices are provided for effecting a coupling of at least one of the coupling members to the second end of one of the connector members on one of the conveyor trucks prior to an uncoupling of the other of the coupling members from the second end of another connector member on another rail conveyor truck. A drive device is provided for driving at least one of the pair of coupling members in timed sequence with the movement of the rail conveyor trucks so that a vacuum is provided in the first-mentioned conduit for the period of time that the coupling device couples the one coupling member to the one connector member to continuously maintain the vacuum source in coupled relation to the first-mentioned conduit.

REFERENCES:
patent: 3832117 (1974-08-01), Hijikota et al.
patent: 3843301 (1974-10-01), Hijikota et al.

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