GB570096A - Foundry plants - Google Patents

Abstract

570,096. Foundry plants. WHITTAKER, E. H. Dec. 8, 1943, No. 20534. [Class 83 (i)] A foundry plant consists of a number of foundry units side-by-side, each having a moulding, a pouring, and a cupola station, with the pouring stations in lateral alignment, and a car movable on an overhead track from one pouring station to another and provided with means for conveying molten metal about the station at which it is located. The plant may consist of a number of identical units B, Fig. 3, each including a mould - storage station J and moulding station H, to the right of these a pouring station K and a shake-out and sand-conditioning station N, and, to the right again, a casting-storage station M and a cupola station L. An endless sand-conveyor P travels from right to left above stations N, H and returns below them, Figs. 1 and 2. Parallel to the conveyer P a driven rollerbed W, Fig. 3, crosses station L and idle roller beds, S, T, U, V, cross other stations as shown. At right angles to the conveyer and roller tables are a track E, for a car 36 to bring supplies of sand, cores, &c., overhead tracks 239, for cranes X and Y for stations H and J, tracks 238, for cranes Z for stations K, N and for a workman's car D, and tracks F for bringing supplies of ore, fuel, chemicals, &c. to the cupolas 21. The overhead crane X may be used for carrying flasks to station H and Y for assembling half moulds from station Hand transferring them to J. The conveyer P carries sand from a bin O, Figs. 1, 2, and station N up to a channel 30 from which it falls through openings 31 into moulding machines 20 or through a valve Q and shoot R into the car 36 for removal. The cranes Z may comprise operator's cab, hoist, &c. (not shown) and may be used for removing filled moulds from K to N. Each station H may have two moulding- machines 20, one for copes 69, Fig. 5, the other for drags 68 which are assembled, without clamps but with a bottom board 71, and transferred to J to dry &c. ready for pouring. They are then moved over the rollers U, V to station K and a weight 70 is applied to each by a hoist 295, movable along a continuous track 293 of the car D by a motor 313 and chain 314. Molten metal from a ladle 383, carried by a hoist 303 which is movable by hand along a continuous track 302 or 298, is poured into a mould through holes 89 of the weight 70. The mould is then pushed towards station N, the weight 70 is lifted off by a free hoist 295 and, when cold enough, the mould is removed by the crane Z to station N and the casting and sand are shaken out, the castings being removed by rollers 47<1> while the sand falls between them to be reconditioned and returned for use by the conveyor P. The castings are placed on grilles and removed by the crane Z or roller bed W to station M. When all the moulds in one unit H have been filled, the crew mount the adjustable cat-walk 305 and the car is moved to another unit. Ladles 383 filled with molten metal are transferred from the station L to K by the driven rollers W, they are then picked up by jaws 384 carried by any hoist 299 or 303 and moved as required by means of safety handles 385. Waste material from the cupolas 21 is removed by underground ways G, Fig. 2.