Knock=out plant for foundry sand moulds - where moulding sand and core sand are reclaimed separately at two adjacent work stations, so the two sands are not mixed together

摘要

Each mould is lifted by a pair of tongs and transported to a first work station (A) which contains rotating wire brushes removing the moulding sand, so the latter drops into a hopper (T1). A second pair of tongs then carries the castings from station (A) to a second station (B) consisting of a conventional knock out grid, from which the core sand falls into a second hopper (T2). Each pair of tongs is mounted on a trolley reciprocated on top of a portal by a single hydraulic cylinder, so that when a mould from a conveyor belt to station (A), a cluster of castings is simultaneously transferred from station (A) to station (B).