Arrangement and method for moulds for metal casting

A method for ramming up moulds for metal casting in a vertical parting surface ram-up machine comprising:

• after completing a squeeze of a mould block (2) for metal casting, the mould block (2) is pushed to an intermediate position (4i), a swing plate (4) carrying a second mould pattern (42) is separated from the mould block (2) by a translatory move to a released position (4r) and then pivoted upwardly to a sidestep position (4s),
• the mould block (2) is pushed out of the ram-up machine by horizontally movable piston (31) operating the squeeze plate (3) carrying a first mould pattern (32),
• after pushing the mould block (2) out, the squeeze plate (3) returns to an initial position (3i) to be ready for mould sand (70) to be supplied,
• the swing plate (4) is pivoted downwardly to the released position (4r) and then moved translatory to a ram-up position (4u),
• the mould sand (70) forming the mould block (2) is supplied to a space (20) formed between the squeeze plate (3) located in the initial position (3i) and the swing plate (4) located in the ram-up position (4u),
• the squeeze plate (3) and/or swing plate (4) are moved toward each others so that the loose mould sand (70) is rammed up or compressed to form the mould block (2),
• characterised in that,
• after the swing plate (4) carrying the second mould pattern (42) is pivoted upwards to the sidestep position (4s) and the squeeze plate (3) is removing the finished mould block (2), one or plurality of feeder elements (5) are attached substantially vertically to the second mould pattern (42),
• when the swing plate (42) is pivoted again downwards and moved to the ram-up position (4u), the feeder elements (5) are located in substantially horizontal direction in their positions,
• the supplied mould sand (70) covers the feeder elements (5) and when the mould sand (70) is compressed, a cavity inside the feeder element (5) forms a part of mould cavity in the mould block (2).