Apparatus for making foundry cores

US4190097A · kind A · utility

Assignee

• Grede Foundries, Inc. · US

Inventors

• John J. Allread · Hartland, US
• Thomas A. McManamy · Reedsburg, US
• Bruno Peter · Einbeck, DE

Key dates

• Filing date: Nov 23, 1977
• Grant date: Feb 26, 1980
• Expiry date: Nov 23, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22C9/123
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An apparatus for making foundry cores. A pair of support plates, each of which carries a core box half, are mounted on carriages and the carriages are movable toward and away from each other to bring the core box halves into mating relation. Mounted above the support plates is a reciprocating carriage that carries a sand head and a gas head. The carriage is initially positioned to locate the sand head beneath a hopper where the head is filled with sand impregnated with an uncured resin binder, and the carriage is then shifted to position the sand head over the core box and the sand is blown into the core box. The carriage is then returned to its original position so that the gas head is positioned over the core box, and a gas, which serves as a catalyst for the resin binder, is introduced into the core box to cure the resin. A manifold system is incorporated in the support plates so that the gas discharged from the core box is passed through a scrubber before being discharged to the atmosphere.