Abstract: The core sand filling device includes the core box, a blow head which is placed below the core box so as to move up and down in a relative manner to the core box and divided into a sand blowing chamber and a sand storage chamber that are communicatively connected to each other, a compressed air supply unit which is communicatively connected to the sand storage chamber and supplies compressed air into the sand storage chamber, an aeration air supply unit which is communicatively connected to the sand blowing chamber and supplies into the sand blowing chamber aeration air for suspending and fluidizing core sand inside the sand blowing chamber, and an exhaust valve which is communicatively connected to the sand blowing chamber and exhausts compressed air remaining in the sand blowing chamber.

Abstract: A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.

Abstract: A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.

Abstract: A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.

Abstract: A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.

Abstract: A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.

Abstract: A molding machine which allows a simplification of a sand filling operation, and the prevention of the formation of a bridge and an air channel in the sand tank, so that the sand filling operation of the molding machine is able to be performed steadily. The molding machine of the present invention includes: a sand tank for storing molding sand to be introduced to a molding flask; a pair of upper and lower sand filling nozzles to guide the molding sand in a horizontal direction, where the molding sand is supplied from a pair of upper and lower sand introducing parts which are located at the lower part of the sand tank; and at least one filter part with a plurality of air-injecting apertures on its entire body, which is attached to at least the entire inner surfaces of the pair of sand introducing parts; wherein the molding sand is fluidized by air injected through the air-injecting apertures of the filter part, and introduced to the molding flask through the sand filling nozzles.

Abstract: The present invention is to provide a machine and a method for suctioning and exhausting air from a storage tank for sand in a molding machine that has less on-off valves and prevents sand from adhering to the interior of the valve for exhausting air while the air is being exhausted.

Abstract: The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.

Abstract: The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.

Abstract: A sand-blowing apparatus for a molding machine having a sand-storing tank for storing foundry sand disposed so as to be movable vertically and having an opening in an upper part of the sand-storing tank for supplying sand thereto, a nozzle in a bottom part of the sand-storing tank, a chamber in a central part of the sand-storing tank, and an exhaust valve that communicates with the chamber, a compressed air tank for storing compressed air that is movable vertically located above the sand-storing tank, and having an opening in a bottom part of the compressed air tank for blowing compressed air, a device for moving the compressed air tank toward and away from the sand-storing tank, a valve for controlling the opening and closing of the opening in the bottom part of the compressed air tank, a piston rod connected to said valve that passes through an upper part of the compressed air tank, and a device for raising and lowering the piston rod to thereby open and close the valve, wherein when the compressed air tank

Abstract: An apparatus for precisely and adequately filling each of upper and lower flask bodies with molding sand equipped with upper and lower compressed air jet mechanisms (which fluidize molding sand at side and lower parts in a substantially horizontal part of each of upper and lower blow heads) and upper and lower guide members (which guide molding sand so as to disperse it toward the entire area of end openings of the blow heads after the molding sand in each blow head has first been focused on the blow head's central part) projectingly provided in the upper and lower blow heads, and a blow head for use in such an apparatus. Thus, the molding sand in the upper and lower blow heads is almost entirely fluidized by jetting compressed air from the upper and lower jet mechanisms when molding sand is blow-squeezed into upper and lower flask bodies.

Abstract: An apparatus for cleaning shot hoods during the manufacture of casting molds or core packets that are ready for casting, by means of core shooters or shooting stations, preferably in a linear arrangement, the core shooters in each instance incorporating a shot hood (3) that comprises a shot plate (1) and shot nozzles (2), it being possible to uncouple the shot hood (3) from the core shooter and lay it on a pallet (4) or the like with the shot nozzles (2) pointing downward, characterized by a delivery system (5), a transfer station (6), an emptying station (7), a flushing system (8), a drying system (9), an exit station (10), optionally an inspection station, and a removal system (11), the shot hood (3) that has been laid upon the pallet (4) being moveable from the core shooter to the transfer station (6) by means of the delivery system (5), it then being possible to raise it from the pallet (4) by means of a first manipulator (12) and pivot it through approximately 180.degree.

Abstract: Molding sand loading and injecting head comprising a vertical cylindrical injecting chamber adapted to be placed in contact with a core box placed below the chamber and provided with an annular tank for compressed air associated with a movable-shutter device adapted to send the compressed air into the chamber both axially and transversely thereto. The head has support and guiding sleeves including an inner sleeve rigid with the chamber and an outer coaxial sleeve rigid with a supporting frame work. The head further comprises a hydraulically operated distributing valve, arranged coaxially to the chamber and associated with the compressed air distribution shutter, for vertically moving the chamber and the related shutter in both directions.

Abstract: A molding machine for molding-sane cores employing openable dies and an injection head with a cylindrical chamber, comprising a compressed air tank coaxial with the chamber, shutters for feeding air at the top of the chamber, movable supports for the head for shifting the head both horizontally and vertically from the working position to a lateral one, a raising piston connected to the lower die for vertically shifting the lower die against and away from the fixed upper die, a drilled gassing plate for gassing the core formed within the closed dies, mounted movable away from and towards the fixed upper die, a plate having dowels for raising and extracting the core formed by the lower die after it has been lowered relatively to the fixed one, an openable collet movable away from and towards the core in extracted position from the lower die and movable outside the machine to a finishing (trimming) station, programmed control and operating devices for obtaining the sequence of the operating phases, and extractio

Abstract: According to the invention, a sand distribution structure is interposed between a sand supply hopper and a flask having an associated pattern. The sand distribution structure comprises juxtaposed, apertured plates, which are adjustable relative to each other to variably register the apertures in the separate plates. It is possible with variations in the dimensions and locations of the apertures in the plates to choose a desired flow rate and/or selectively disperse the sand over the pattern.

Abstract: As in the parent application, a freshly mixed quick-setting sand mix is blown from a blow box into a mold while a plunger moves through the blow box to chase all of the fluidized sand into the mold. Here, the blow box sand cavity is formed by a tube extending downward but leaving an annular gap above the blow plate. The fluidizing air tends to move bottom sand directly through the center exit in the blow plate. With quick setting sand, any residue is blown into a purge pan while the plunger is advanced. With sand that is not quick setting, and without the plunger, nearly all residual sand settles and tends to be the first blown into the mold during the succeeding blow.

Abstract: An entirely automatic, cold box type machine for molding an integral connecting core, which machine is provided with a sand blowing mechanism and a gassing mechanism, these mechanisms being suspended above an upper frame of the molding machine and traversable, and with a liftable drag car being mounted on the platform of the molding machine, characterized in that a rotatable connecting core feeding device is provided at one side portion outside the molding machine, a reversing unloader is provided at the other side portion, and a connecting core transfer car having a connecting core lifting device is traversably suspended from the upper frame in parallel with the sand blowing mechanism and the gassing mechanism.

Abstract: An apparatus and method for producing one or more hollow sand cores suitable for casting moulds using a bipartite core box defining a mould cavity into which sand and a catalyst or a curing agent are introduced. The method includes the steps of establishing a pressure gradient which decreases from the interior to the exterior of a non-heated core box of porous material; introducing sand and a catalyst or a curing agent into the mould cavity defined by the non-heated core box; and directing the introduced sand and catalyst or curing agent against the interior surface of the non-heated core box, which step of directing, at least in part, is obtained by the pressure gradient established between the interior and exterior of the non-heated core box. The apparatus provides structure for accomplishing the above described method.

Abstract: A dosed amount of molding sand is placed in a vessel arranged at a given distance from a pattern device from which a mold is to be formed, and a pressurized force is applied against the molding sand in the vessel from the side thereof remote from the pattern device in order thereby to impart to the molding sand an acceleration in the direction of the pattern device to compress the sand about the pattern device with the velocity of the accelerated molding sand being braked by impact with the pattern device and also by impact partially with a molding box within which the pattern device is contained. The vessel containing the molding sand is connected to a pressure source by a valve device which controls the application of pressure to the molding sand. Additionally a vacuum device is utilized to apply suction tending to compact the sand within the vessel to produce a more cohesive mass.

Abstract: The machine comprises an openable moulding box which has a perforated top side and is in the form of two separable semi-moulds. A sand blowing head is movably connected to the machine stand by at least one pair of parallel connecting elements which form a deformable parallelogram structure. The head is capable of being moved away from the perforated top side or against the latter for blowing a mixture of sand and binder into the interior of the mould.

Abstract: In a machine for the automatic production of flaskless foundry molds by a blow-squeeze method between opposed pattern plates in an opening in a slider which then moves to carry the newly formed mold clear of its point of production, to a point where it is ejected, the slider moves vertically and the point of ejection is vertically below the point of production. Preferably both pattern plates are actuated by a single ram assembly which lies to one side of the slider, being connected to the pattern plate on the other side through tie-rods.

Abstract: A vertical split shell molding machine characterized by comprising hanging top board rails which are movably and fixably mounted to the top board of the principal body of said machine, a blow head assembly which is arranged movably beneath said hanging top board rails, an assembly which rotates a core box by 180.degree. in the vise assembly, and an assembly which overturns a fixed core box outside the machine.