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US 4,121,650 AGranted
Foundry casting machines
AssigneeGough & Company (Hanley) Limited
InventorGeorge Terah Gough
Life of this patent
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AssigneeGough & Company (Hanley) Limited
InventorGeorge Terah Gough
Estimating the term…
A foundry casting machine comprising an endless conveyor supported on a frame within an overall casing for movement in a vertical plane through a sinuous path, the casing having a first opening therein so that trays supported by the conveyor, as they move past said first opening can have moulds assembled thereon, a second opening in the casing at a pouring station to enable molten metal to be poured into the moulds and a third opening in the casing through which the contents of the trays may be removed, air extraction means for withdrawing undesirable gases and air-borne particles from the interior of the casing and means to hold together the parts of the mould prior to the pouring of the molten metal, said means comprising either one or more weights which are automatically placed upon the moulds prior to a pouring operation and are removed from the moulds subsequent to the pouring operation or clamping devices supported on the trays, the clamping devices being suitable either for clamping together mould parts which are split horizontally or for clamping together mould parts which are split vertically. The machine is specifically designed for handling green sand moulds.
A foundry casting machine comprising a frame, means supporting an endless conveyor on said frame, for movement in a vertical plane through a sinuous path, an overall casing surrounding said frame and endless conveyor, means supporting a plurality of suspended trays on said endless conveyor, three openings in the exterior of said casing, drive means for driving said conveyor, and hence said trays, successively past said openings, said openings comprising a first opening providing access to successive trays for the assembly of one or more moulds therein from two mould parts, a second opening at a pouring station providing access to the trays for the pouring of molten metal into the moulds, a third opening through which the contents of the trays may be removed, air extraction means adapted to withdraw air and air-borne particles from the interior of said casing and from the vicinity of the second and third openings for passage through a filtration plant, means including at least one weight to hold together said mould parts prior to a pouring operation, a forklift type unit for placing a weight on said moulds on the trays as they pass along a lower conveyor run prior to a pouring operation and for subsequently removing said weight from the moulds as they enter a section of the conveyor run which continues vertically upwards subsequent to said pouring operation, said forklift type unit having a horizontal guide track, a horizontally movable carriage supported on said guide track, a vertically extending mast supported by said carriage, a vertically movable carriage movable along said mast, and lifting means supported on said vertically movable carriage for engaging said weight.
A foundry casting machine comprising a frame, means supporting an endless conveyor on said frame, for movement in a vertical plane through a sinuous path, an overall casing surrounding said frame and endless conveyor, means supporting a plurality of suspended trays on said endless conveyor, three openings in the exterior of said casing, drive means for driving said conveyor, and hence said trays, successively past said openings, said openings comprising a first opening providing access to successive trays for the assembly of one or more moulds therein from two horizontally split mould parts, a second opening at a pouring station providing access to the trays for the pouring of molten metal into the moulds, a third opening through which the contents of the trays may be removed, air extraction means adapted to withdraw air and air-borne particles from the interior of said casing and from the vicinity of the second and third openings for passage through a filtration plant, a clamping mechanism forming part of each said tray to hold each mould together, said clamping mechanism including a clamp plate support tube between said end walls above said moulds on said tray for movement between clamping and release positions, a clamp plate for each mould, means freely supporting said clamp plates on said tube, and operating means for moving said tube and hence said clamp plate(s) between said clamping and release positions.
A foundry casting machine comprising a frame, means supporting an endless conveyor on said frame, for movement in a vertical plane through a sinuous path, an overall casing surrounding said frame and endless conveyor, means supporting a plurality of suspended trays on said endless conveyor, three openings in the exterior of said casing, drive means for driving said conveyor, and hence said trays, successively past said openings, said openings comprising a first opening providing access to successive trays for the assembly on one or more moulds therein from two vertically split mould parts, a second opening at a pouring station providing access to the trays for the pouring of molten metal into the moulds, and a third opening through which the contents of the trays may be removed, air extraction means adapted to withdraw air and air-borne particles from the interior of said casing and from the vicinity of the second and third openings for passage through a filtration plant, a clamping mechanism forming part of each tray to hold each mould together, said clamping mechanism including two parallelogram linkages each having a pair of parallel cranked arms and each pivotally connected to one of said end walls at one end, the opposite ends of the arms of each linkage being pivotally connected to a plate forming part of the linkage, at least one bar extending between said plates above said tray, an upstanding rear wall on said tray, and an over centre locking device having a hook associated therewith for engagement with a stud on one of said arms for locking said mechanism in a clamping position.
Dependencies are inferred from the claim text.