Shake-out grid

Machines which use vibration to separate castings and sand or clumps of sand from one another.

These systems usually work with vertical vibrations. They are mainly used for large castings with high casting weights and low quantities. The material is fed in (cast molds with mold boxes or boxless mold blocks) with a crane. Later the castings which have been taken out are removed again with the crane. The used sand is taken in under the shake-out grid by an under-floor conveyor and fed to the regeneration and then the sand conditioning.

To reduce the necessary pit depth and its costs, two technical designs have proved to be effective and become widespread. One is the counter-support foundation with a frame construction (Fig. 1, GUT GmbH, Freudenberg) where the hopper is integrated into the frame work and the other is the special angled-bucket elevator to transport more than 30t/h of sand. Today, the usable surface of the shake-out grid for single grids can be up to 20m2 and can be any size for multiple grids. Depending on the design, loads can weigh up to 50t. Fig. 2 (GUT GmbH, Freudenberg) shows an example system of a shake-out station and Fig. 3 (GUT GmbH, Freudenberg) shows the PLC panel of a shake-out station with sand reclamation.

  • Fig. 1: Counter-support foundation,(GUT Giesserei Umwelt Technik GmbH, Freudenberg)
  • Fig. 2:  Example shake-out station system, (GUT Giesserei Umwelt Technik GmbH, Freudenberg)
  • Fig. 3: PLC panel of a shake-out station with sand reclamation, (GUT Giesserei Umwelt Technik GmbH, Freudenberg)
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