Slug production device for brick-making machines

A slug production device for brick-making machines comprising:

• a raw brick mixture filler trough for containing raw brick mixture to be crushed having a filler trough inlet and a filler trough outlet;
• first aggregate crushing means for crushing said raw brick mixture from said raw brick mixture filler trough, said first aggregate crushing means fixedly mounted inside said raw brick mixture filler trough and covering said filler trough outlet;
• a pressure tube structure having two pressure tubes for receiving said raw brick mixture from said raw brick mixture filler trough, said raw brick mixture entering said pressure tube structure through said filler trough outlet, and said raw brick mixture exiting said pressure tube structure through a pair of pressure tube outlets;
• first pressure drive means for driving a first set of pistons within said pressure tube structure;
• a pair of grid screens respectively fixedly secured to said pressure tube outlets, each of said grid screens having a plurality of openings for extrusion of said raw brick mixture into slugs;
• a vacuum trough for receiving said slugs from said pressure tube structure, said slugs entering said vacuum trough through said grid screens, and exiting said vacuum trough through a vacuum trough outlet;
• second aggregate crushing means for crushing said slugs, said aggregate crushing means fixedly mounted within said vacuum trough and covering said vacuum trough outlet;
• a forming tube structure having a pair of forming tubes for receiving said slugs from said vacuum trough, said slugs entering said forming tube structure through said vacuum trough outlet, and said slugs exiting said forming tube structure through a pair of forming outlets;
• second pressure drive means for driving a second set of pistons within said forming tube structure;
• a forming nozzle fixedly secured to said forming outlets, said forming nozzle having a plurality of forming holes for forming bricks.