US 2002/0157804 A1 · Casting sand blowing device for molding machines

Abstract

A blow-squeeze molding apparatus equipped with a compact and cheap gas treating apparatus wherein the loss of pressure in the compressed air is small and the position at which sand is blown into the mold can be easily changed. The apparatus comprises a sand-storing tank equipped with a sand-discharging nozzle and an exhaust valve, a compressed air-storing tank equipped with a compressed air-discharging opening, and means for opening and closing the compressed air-discharging opening. The blow squeeze machine comprises a stationary member for fixing a stationary piece of mold (mold half) and a sliding member for sliding a movable piece of mold. The gas treating apparatus comprises a hood surrounding the shell machine, means for treating gases with a smell, and a guide tube for guiding gases with a smell.

Claims7

Dependent claims

A blow squeeze apparatus for a molding machine comprising,

a tank disposed so as to be movable vertically for storing foundry sand, and having an opening that passes through the upper part of the tank for supplying the sand, a nozzle that passes through the bottom part of the tank, an empty chamber that occupies the central part of the tank, and an exhaust valve placed on the empty chamber,
a tank disposed just above a mold that is movable vertically above the sand-storing tank for storing compressed air, and having an opening that passes through the bottom part of the compressed air tank for blowing compressed air, wherein when the sand tank is lowered and abuts the sand tank, the sand-supplying opening communicates with the compressed air-blowing opening so that the foundry sand is blown through the nozzle by the compressed air from the compressed air-blowing opening, and
means disposed in the compressed air tank for opening and closing the compressed air-blowing opening.

Dependencies are inferred from the claim text.

Casting sand blowing device for molding machines

Life of this patent

Casting sand blowing device for molding machines

Life of this patent

Abstract

Claims7