US 4,083,396 AGranted

Rotary type core-making machine

AssigneeAshland Oil, Inc.

InventorAnatol Michelson

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Abstract

Disclosed is a rotary-type continuous motion core making machine capable of carrying a number of core mold boxes, each supported on a carrier adapted to move up and down, a sand distributing system adapted to inject a foundry sand mix into each of the core boxes, and a manifold system for distributing curing and purging gases to the core boxes. The machine is capable of completing a core/mold production cycle in a single circle of turret revolution. The vertical movement of the core box carrier, horizontal radial movement of portions of the gas manifold system, and movements of other parts of the machine are generated by the turret rotation and are controlled by a number of stationary contoured cam tracks. Disclosed also is a novel catalyst gas generating system, a core box assembly containing ejector pins in the top portion thereof, and a system for collecting and assembling components into a unified core and mold assembly.

Claims11

Dependent claims

Apparatus for making foundry molds and cores from a plurality of molds each separable into at least a bottom part and a top part comprising;

(a) a carrier continuously rotatable about a central vertical axis;
(b) a plurality of first means mounted in said carrier, each attachable to a bottom part of one of said molds and adapted to raise and lower said bottom part;
(c) a plurality of second means mounted in said rotary carrier, each attachable to a top part of one of said molds and adapted to reciprocate in a radial direction, normal to the vertical direction of movement of said means for raising and lowering;
(d) a first circular cam track positioned essentially in a horizontal plane around and normal to the central axis of said rotatable carrier having a varied horizontal radius, and adapted to be slidably engaged by each of said plurality of second means;
(e) third means for receiving measured amounts of a flowable granular refractory material;
(f) fourth means for conveying said flowable granular refractory material to each of said top parts of each of said molds;
(g) a gas distribution valve and manifold system attached to said plurality of second means, adapted to admit sequentially a curing gas or air to each of said top parts of said molds, and means to admit a compressed gas to said means for conveying flowable granular refractory material upon a predetermined schedule;
(h) a gas collection manifold system connected to each of said bottom mold parts and adapted to remove gas from each of said molds upon a predetermined schedule;
and
(i) a circular cam track:
(1) positioned around the central vertical axis of said carrier;
(2) having a substantially constant radius normal to said central vertical axis but having a varied vertical height;
and
(3) slidably engaging each of said first means for raising and lowering.

11 more elements

Dependencies are inferred from the claim text.