GB984143A - Foundry moulding machine - Google Patents

Abstract

984,143. Moulding-machines. OSBORN MANUFACTURING CO. Nov. 1, 1962 [Dec. 22, 1961], No. 41363/62. Heading B3F. A moulding machine has a sand shoot and selectively operable squeeze heads mounted for horizontal shuttling movement, and means operable to reciprocate the sand shoot and the selected squeeze head into operative sand filling and sand squeezing positions respectively above a mould box or the like. The machine described is for forming two moulds, e.g. a cope and a drag side-by-side simultaneously, the boxes being fed in pairs along the line E. The apparatus for moulding each box is the same and each comprises a moulding sand hopper 13, 14 with a cut-off plate 15, 16 actuated by cylinders 17, 18 and leading to a sand shoot 43, and a facing sand hopper 30, 31, beneath which cut-off plates 34, 35 and a louvred sand box 36, 37 are shuttled by pistoncylinder assemblies 38-41. Below the hoppers is mounted a horizontal slide carrying a sand shoot 91, 96, two squeeze boards 90, 92, 95, 97 and a carriage 93, 98 carrying piston cylinder assemblies 94, 99 for shuttling the shoot and selected squeeze board to and from a position beneath the sand box 36, 37. Each carriage 93, 98 carries latching members actuated by piston cylinder assemblies which lock the carriage in one of two alternative positions, Fig. 3, relative to the slide conveyer according to which of the two squeeze plates 90, 92 or 95, 97 is to be used. The locking pins are retracted and the latches engaged with the facing sand cut-off plates for movement thereby of the carriage into the desired position. The filling frame 61, 62 is mounted on pneumatic pistons 63, 64 and the pattern plates and patterns 73-76 are moved upwardly by rams 5, 6. The amount of facing sand and moulding sand delivered to the sand box may be adjusted by adjusting screws 52 and 51 respectively.