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US 6,470,953 B1Granted
Molding method and system with a molding apparatus
AssigneeSingtokogio, Ltd.
InventorsMinoru Hirata, Yutaka Hadano
Life of this patent
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AssigneeSingtokogio, Ltd.
InventorsMinoru Hirata, Yutaka Hadano
Estimating the term…
A method and system using a molding apparatus with frames by which the amount of molding sand that overflows the molding apparatus and that must be taken out of a mold that is prepared by a molding operation is minimized, and by which the density of the mold within a frame is substantially uniform. The molding sand filling cavity is defined by a pattern plate, a molding frame that can be put on the pattern plate, a filling frame that can be put on the molding frame, and a covering apparatus having a plurality of squeezing feet. The squeezing feet can enter the filling frame and can be temporarily held at certain positions where certain distances are kept between the lower ends of the squeezing feet and surfaces of the patterns on the pattern plate that are opposed to the lower ends. Molding sand is supplied to the molding sand filling cavity. Then, the molding sand is compressed by the squeezing feet.
A molding method for a molding apparatus with molding frames including the steps of
A molding system with molding frames having a pattern plate, a molding frame adapted for positioning on the pattern plate, a filling frame adapted for positioning on the molding frame, a covering apparatus having a plurality of squeezing feet adapted to enter the filling frame and adapted to be temporarily held at certain positions where certain distances are kept between the lower ends of the squeezing feet and the surfaces of patterns on the pattern plate, which surfaces are opposed to the lower ends, wherein a substantially closed molding sand filling cavity is defined when the pattern plate, the molding frame, the filling frame, and the covering apparatus are positioned together, and a sand supplying apparatus for filling the defined molding sand filling cavity with molding sand following the positioning together of the pattern plate, the molding frame, the filling frame and the covering apparatus, and further including sensors for measuring reaction forces to respective squeezing feet, a storage device that stores molding data based on the measurements of the sensors for measuring reaction forces, and a distance calculation device for calculating distances between the lower ends of the squeezing feet relating to the molding sand filling cavity and the patterns on the pattern plate that are opposed to the lower ends of the squeezing feet.
Dependencies are inferred from the claim text.