Method and apparatus for packing granular materials
AssigneeGeorg Fischer Aktiengesellschaft
InventorsKurt Fischer, Robert Steinemann, Hans Tanner
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Abstract
For packing granular materials, especially foundry moulding materials, by means of an exothermic reaction of a mixture of air and fuel in a combustion chamber (23), a relative movement between the combustible mixture and one or several pulse triggers (19), is produced during the exothermic reaction, preferably by a blower (20) disposed in the combustion chamber (23). Hence the measured amount of sand introduced into a moulding frame (11) and a filling frame (12) over a pattern (6) by means of a sand container (17) is packed to form a mould body.
Claims14
In a process for packing granular materials wherein the granular materials are placed in a closed system and a mixture of air and fuel are ignited to cause the air and fuel to exothermically react and the pressure generated from the reaction compacts said granular materials, the improvement which comprises constantly moving the component with a blower just prior to the initiation of the exothermic reaction.
A device for packing granular materials wherein the granular materials are placed in a closed system and a mixture of air and fuel are ignited to cause the air and fuel to exothermically react and the pressure generated from the reaction compacts said granular materials comprising a pattern plate (5) for receiving the granular material to be packed with a moulding-frame (11) and a filling frame (12) disposed thereon and with a cap-shaped combustion chamber (23) connected to it, this chamber having at least one inlet aperture (21) and at least one initial ignition pulse trigger (19), and means (20, 80) for producing a relative movement between the combustible mixture and the initial pulse triggers (19), said means being a blower.
A device for packing granular materials wherein the granular materials are placed in a closed system and a mixture of air and fuel are ignited to cause the air and fuel to exothermically react and the pressure generated from the reaction compacts said granular materials comprising a pattern plate (5) for receiving the granular material to be packed with a moulding-frame (11) and a filling frame (12) disposed thereon and with a cap-shaped combustion chamber (23) connected to it, this chamber having at least one inlet aperture (21) and at least one initial ignition pulse trigger (19), and means (20, 80) for producing a relative movement between the combustible mixture and the initial pulse triggers (19), said means being a movable ignition pulse trigger.
Dependencies are inferred from the claim text.