How does matchplate moulding work?
Matchplate moulding employs a plate with patterns mounted on both sides. The DISA MATCH moulding machine’s version of the process incorporates the unique DISAMATIC vertical blow/squeeze method, proven to optimally distribute sand, minimise pattern wear and consistently produce hard, accurate moulds.
These are the seven operations of DISA’s matchplate moulding process:
|The matchplate is positioned
between the two mould chambers.
|The mould chambers close.||The mould chamber assembly
pivots 90° to line up with the sand
hopper for a vertical sand shot.
|Sand is blown down to fill each
chamber and squeezed by multiple
pistons to create the “drag” and “cope”
mould halves. The patterns form impressions
on each mould half.
|The chamber assembly pivots back to
horizontal and opens. The matchplate
is removed. Any cores required are placed
on the drag mould.
|The chambers shut again to close the mould.||The complete mould is pushed out
and placed on the conveyor. A jacket weight
is placed around the cope before the metal is poured.
Advantages of the matchplate moulding process
The matchplate process offers greater speed and mould accuracy compared to older horizontal techniques like jolt squeeze.
Matchplate moulding also offers very fast and simple pattern plate changes, making it perfect for short to medium-run casting production. DISA’s Quick Matchplate Changer (QMC) can change matchplates within two minutes.
Patterns designed for horizontal moulding machines can usually be transferred to matchplate moulding machines with little effort. Likewise, matchplate patterns designed for one brand of machine can usually be employed on a DISA MATCH with minor modifications or using a simple adapter frame.
These enclosed machines create a cleaner, quieter and safer foundry working environment.