A sand core making machine is provided that includes at least one transfer tool by means of which the material for making the core is transferred when said transfer tool is moved to an operating position. The machine also includes a curing tool by means of which the material previously transferred by the transfer tool is hardened and which is arranged in an operating position over the material to perform the hardening once the transfer tool has moved out of its operating position. The machine includes at least one articulated arm for moving the transfer tool and the curing tool to the respective operating position.

A sand molding apparatus and method, whereby cope and drag portions of a sand mold are formed simultaneously via pressurized sand delivered to each side of a pattern in a perpendicular trajectory. Two opposing sand shooting passageways include a vertical inner side wall and a horizontal inner side wall extending at an angle from the vertical inner side wall. A sand shooting plate at the outlet of each sand shooting passageway includes removable and interchangeable port and cover inserts that can be arranged in custom arrays within the sand shooting plate.

A sand molding apparatus and method, whereby cope and drag portions of a sand mold are formed simultaneously via pressurized sand delivered to each side of a pattern in a perpendicular trajectory. Two opposing sand shooting passageways include a vertical inner side wall and a horizontal inner side wall extending at an angle from the vertical inner side wall. A sand shooting plate at the outlet of each sand shooting passageway includes removable and interchangeable port and cover inserts that can be arranged in custom arrays within the sand shooting plate.

A core shooting machine (1) for producing cores by a process of shooting a core sand mixture (21) into a at least one cavity (19) in a core box (18) that is associated with the core shooting machine (1). The core shooting machine (1) comprises a source of compressed air (10) at an adjustable initial machine pressure (P.sub.0), the adjustable initial machine pressure (P.sub.0), being an adjustable process condition of the process, and a shooting head (13) fluidically coupled to the source of compressed air (10) by at least one conduit (12) that includes an electronically controlled shot valve (11), the shooting head (13) being configured for containing an amount of the core sand mixture (21), resulting in a filling degree of the shoot head (13), the filling degree being an adjustable process condition of the process, a computing device (50,60) associated with the core shooting machine (1), the computing device (50,60) being configured to perform a simulation of the process, the simulation using a model of the process, the computing device (50,60) being configured to be informed of several process conditions, including the adjustable process conditions.

A core shooting machine (1) for producing cores by a process of shooting a core sand mixture (21) into a at least one cavity (19) in a core box (18) that is associated with the core shooting machine (1). The core shooting machine (1) comprises a source of compressed air (10) at an adjustable initial machine pressure (P.sub.0), the adjustable initial machine pressure (P.sub.0), being an adjustable process condition of the process, and a shooting head (13) fluidically coupled to the source of compressed air (10) by at least one conduit (12) that includes an electronically controlled shot valve (11), the shooting head (13) being configured for containing an amount of the core sand mixture (21), resulting in a filling degree of the shoot head (13), the filling degree being an adjustable process condition of the process, a computing device (50,60) associated with the core shooting machine (1), the computing device (50,60) being configured to perform a simulation of the process, the simulation using a model of the process, the computing device (50,60) being configured to be informed of several process conditions, including the adjustable process conditions.

A method for molding by which the density of sand of a mold is almost uniform. The method includes a step of forming a molding space by using a flask, using an auxiliary flask that has a lower opening that is connectable to an upper opening of the flask, using a squeeze head that has a squeeze board and has a plurality of squeeze feet that pass through the squeeze board and vertically move, and using a pattern plate, a step of filling the molding sand into the molding space, and a step of squeezing the molding sand by lowering the squeeze head, wherein the squeeze feet that face a concavity of a pattern are lowered at the same time as the step of squeezing starts or during the step of squeezing.

A core discharge device is provided for discharging a sand core from a cast material in which the sand core contains a binder having water glass. The core discharge device includes a humidified gas supply device that supplies humidified gas to the sand core inside the cast molded article. The humidified gas is a gas to which humidity has been added and from which droplets have been removed.

A core discharge device is provided for discharging a sand core from a cast material in which the sand core contains a binder having water glass. The core discharge device includes a humidified gas supply device that supplies humidified gas to the sand core inside the cast molded article. The humidified gas is a gas to which humidity has been added and from which droplets have been removed.

The invention relates to a method for producing lost cores or molded parts for the production of cast parts, in which a basic molding material is mixed with an alkali silicate or water glass binder and a lost core or a molded part for the production of cast parts is formed using a core shooter in a core box, wherein the alkali silicate or water glass binder contains an alkali silicate or water glass solution having a modulus of 1.5 to 3.5 and natural and/or synthetic additives in a proportion of 0.1 to 25% by weight measured with respect to the total amount of binder, with a particle size of less than 5 m and the natural and/or synthetic additives are at least aluminum silicate, magnesium silicate and sodium aluminum silicate, each having a proportion of 1 to 5% by weight measured with respect to the total amount of binder. The lost core or the other molded part is formed in an unheated core box, and the lost core thus formed or the molded part is cured using hot air.

The invention relates to a method for producing lost cores or molded parts for the production of cast parts, in which a basic molding material is mixed with an alkali silicate or water glass binder and a lost core or a molded part for the production of cast parts is formed using a core shooter in a core box, wherein the alkali silicate or water glass binder contains an alkali silicate or water glass solution having a modulus of 1.5 to 3.5 and natural and/or synthetic additives in a proportion of 0.1 to 25% by weight measured with respect to the total amount of binder, with a particle size of less than 5 m and the natural and/or synthetic additives are at least aluminum silicate, magnesium silicate and sodium aluminum silicate, each having a proportion of 1 to 5% by weight measured with respect to the total amount of binder. The lost core or the other molded part is formed in an unheated core box, and the lost core thus formed or the molded part is cured using hot air.