Abstract: To provide a method and a machine for forming flaskless molds with a shortened cycle time even if many cores are placed, to thereby achieve efficient molding.

Abstract: A method and automated matchplate molding machine for blowing sand horizontally into the horizontally spaced open ends of the cope and drag flasks with a perpendicular trajectory relative to a vertically aligned matchplate between the cope and drag flasks. Sand is pneumatically blown horizontally from sand magazines through opposing ends of the cope and drag flasks toward the matchplate. The cope and drag flask can be turned between the upright and rotated positions. The machine disassembles the mold flask and removes the mold in the upright position and fills the mold with sand horizontally when in the rotated position. The molding machine includes a rotating turret that carries two mold flasks between a mold forming station and a draw station. The mold flasks may also be rotated about a horizontal axis relative to the turret to facilitate turning of the mold flasks between upright and rotated positions.

Abstract: An apparatus for drawing a pattern plate (1) upward from a carrier plate (2), which pattern plate is held in the carrier plate and transferred along a transport path, is disclosed. The apparatus comprises a first lifting cylinder (5) having an upwardly extendable piston rod (5A) and that is fixedly disposed below the transport path, a mount table (7) secured to the tip end of the first lifting cylinder piston rod (5), and second and third lifting cylinders mounted on the mount table in a spaced-apart relationship, the second and third lifting cylinders each having an upwardly extendable piston rod (9, 9A), a mount plate (10, 10A) secured to the tip end of the piston rod (9, 9A), and a plurality of draw pins (11, 11A) mounted upright on the mount plate.

Abstract: A shell molding apparatus includes a lower die and an upper die. The lower die includes a plurality of shell molding inserts, each having the shape of a halved cylinder, spiny insert receiving recesses which are formed in undercut portions formed by curved surfaces of adjacent shell molding inserts, and spiny inserts retractably provided in the spiny insert receiving recesses, each spiny insert having a curved surface of the same curvature as the curved surface of the shell molding insert and provided with many protrusions on the curved surface. The upper die has a plurality of continuously formed recesses corresponding to the plurality of shell molding inserts of the lower die.

Abstract: An automatic molding apparatus includes a rotatable turntable which has located thereon a plurality of pattern supporting plates. A mold pattern located on at least one of the pattern supporting plates is surrounded by a flask located on the pattern supporting plate and having an open top and bottom. A movable sand adding box communicates with the top of the flask when the flask and the pattern supporting plate are moved to a feeding position beneath the sand adding box. The sand adding box has an open top and bottom to allow sand to pass therethrough and into the flask. A feeding channel beneath a sand supply includes an upper opening for allowing sand from the sand supply to enter the feeding channel. A movable plate allows sand in the feeding channel to enter the sand adding box when the movable plate is moved to an open position. After being filled with sand, the flask and sand adding box are raised to a position where a pressing plate compresses the sand in the flask.

Abstract: For a production of foundry moulds, dies are stepwise, cyclically conveyed by a continuous conveyor and, synchronously with the dies, shot hoods are conveyed into a shot station which is common to both the dies and shot hoods, with the shot hoods being displaced with respect to the dies. For this purpose, a cyclically revolving die conveyor is provided for the dies, and a further conveyor is provided for the shot hoods, with the further conveyor revolving synchronously with the die conveyor. At least one shot station may be provided which is common to several dies and may be associated with the die conveyor in which dies and the associated shot hoods are conveyed by the die conveyor in a reciprocally displaced manner.

Abstract: A hopper for providing moulding sand having an opened top and a bottom member having through holes for discharging the sand is positioned spaced apart at a suitable distance horizontally from a cover member connected to a suitable source for generating gas for hardening the moulding sand. A pattern plate provided with vacuum evacuating means is disposed to be selectively connected to either one of the hopper and the cover member for discharging and filling the moulding sands into a flask placed on a pattern plate and for introducing hardening gas and allowing said gas to penetrate and permeate through the layer of sand filled in the flask to harden the filled sand, respectively. By using vacuum evacuation of a hollow chamber in the pattern plate instead of pressurized air and hardening gas under pressure, the entire moulding apparatus can be rendered lighter in construction and smaller in size, while any leakage of poisonous hardening gas can be completely prevented from occurring.

Abstract: Foundry sand molding apparatus for simultaneously forming cope and drag molds. The cope and drag molds are substantially simultaneously pre-jolted and jolt-squeezed to assure uniform density in the molds. Thereafter the apparatus laterally transfers the cope and drag molds into vertical alignment at an assembly station, with the drag mold being inverted and lowered during lateral transfer of same.

Abstract: A molding installation for the production of bipartite-boxless foundry molds, comprises a molding machine with a molding station wherein a cope and a drag are simultaneously shaped and a conveying means by which the cope and the drag are conveyed along in a closed path from the molding station to a joining and stripping station where the cope and drag are recombined and from which they are removed together from the complete foundry mold with the empty molding boxes returned to the molding station while the boxless foundry mold is transferred to a casting line. At least one processing station is provided between the molding station and the joining and stripping station for conducting finishing work, such as the insertion of cores, on at least one of the two molds.

Abstract: An automatic no-bake core and mold-making machine. A frame is rotatably mounted on a base and carries a plurality of core-forming patterns around its periphery. Plates surround the patterns to form a continuous, flat surface interrupted only by the pattern cavity. A mixing machine located adjacent to the rotating frame continuously pours sand and binder on the patterns and surrounding plates. A stationary plow under which the plates and patterns pass continuously wipes excess sand and binder into the next succeeding pattern passing below the plow. Means are provided for ejecting the cores from the patterns after they are cured.

Abstract: A molding machine for fabricating boxless molds wherein the mold boxes or flasks for the mold halves are moved, upon arms of a turnstile or rotatable cross-shaped element, cyclically to various molding stations of the molding machine. Fabrication of a casting mold at the closing or assembly station is rendered possible in that, a support plate of a conveyor device for the further transport of the casting molds is structured as part of the closing or assembly station. An ejector punch, a support means for the mold boxes or flasks and an elevationally displaceable table are arranged such that a mold lower part and a mold upper part are successively ejected into the support plate for the purpose of forming the casting mold.

Abstract: Apparatus useful in foundry moulding or casting embodying a turret having a lurality of arms rotatably mounted on and extending radially from a hub or drum rotatable about a vertical axis. The arms comprise a base, an inclined intermediate portion and an end portion parallel with the base. A fixed rack is disposed horizontally on the turret frame and extends along the arc of a circle in part of the zone swept by the arms during rotation of the hub. Each of the arms carries a pinion, whose teeth mesh with the teeth of the rack to induce rotation of each arm by 180.degree. to invert the mould or die carried on the end of the arm.

Abstract: A machine for making a sand part for a metal casting wherein at least three frames, each equipped with means for shaping a sand part, are positioned at spaced apart points on an orbit, and indexed through three stations in the orbit wherein the shaping means are charged, gassed and unloaded.

Abstract: A system for automatically forming flaskless sand molds, and preparing them for metal pouring. Cope and drag flasks are alternately filled with chemically bonded sand on an indexing turntable, and the sand is allowed to cure or set up while still on the turntable. The copes and drags are then automatically removed from their respective flasks and placed on a conveyor belt by a rollover draw machine. The above is accomplished automatically, with little or no supervision required.

Abstract: A system for producing foundry molds providing a device for filling empty mold boxes with mold forming material at a filling station includes a first rotary shifting device and a second rotary shifting device located on opposite sides of the filling station. The first shifting device operates to shift pattern devices from the filling station to a first shifting station while simultaneously moving another pattern device from the first shifting station into position at the filling station. Likewise, the second shifting device moves mold halves from the filling station to a second shifting station while simultaneously moving an empty mold box from the second shifting station to the filling station. The pattern devices are moved to and from the first shifting station by a first conveyor device and the empty mold boxes and the mold halves are moved to and from the second shifting station by a second conveyor device which extends generally parallel to the first conveyor device.

Abstract: A flaskless stack molding machine comprises a frame on which along the production process line a flask molding means and a means for separating flasks from the molds and assembling the molds into stacks are sequentially mounted. The means for separating the flasks from the molds and assembling them into stacks is provided with a stack-assembling bottom carriage mounted for vertical movement on guides attached to the frame and a bottom plate secured over the bottom carriage. The frame also supports a mechanism for transporting the flasks freely placed thereon. The means for separating the flasks from the molds and assembling them into stacks incorporates a top carriage for separating the flasks from the molds, which is for vertical movement on the guides secured on the frame and is arranged between the bottom carriage and the bottom plate. A drive means for vertical motion of the top carriage is secured on the frame and a drive means for the bottom carriage is rigidly affixed on the top carriage.

Abstract: A machine for forming foundry moulds includes a turret supporting spaced mould frames, each of the latter having a mould portion formed therein by rotation of the turret toward a sand filling and compacting station and away therefrom. The completed mould portion may be moved to a position where a core can be set thereon and then moved to a position where the mould portions are positioned one atop another to make a stack of finished and cored moulds. When the moulds are not cored, a pair of said filling and compacting stations are provided, the turret oscillating or rotating unidirectionally from a loading position to a delivery position. Where a pair of filling and compacting stations are provided for forming cope and drag mould portions, the turret oscillates to place the two mould portions in proper position to form a mould comprised of cope and drag portions.

Abstract: A horizontal stack foundry molding machine having opposed high pressure horizontally aligned rams adapted to close and then move into the open ends of a mold box filled with sand to make a high quality sand mold, such box being formed by opposed L-shape parts, the L-shape part forming the lower side of the box being horizontally movable after the rams have been retracted to shift the mold formed in the box from between said rams to a position in alignment with a pouring conveyor, a pusher being provided to move such mold from the movable L-shape part onto the pouring conveyor into juxtaposition with previously formed molds to form the horizontal stack.

Abstract: A molding machine for producingcasting molds has several angularly spaced molding stations and includes a main column and at least one swivel column positioned within and rotatable relative to the main column. Swivel bearings connect swivel arms to the main and swivel columns so that the arms extend transversely of and can be moved between the molding stations. Box frames for forming mold parts are secured to the free ends of the swivel arms so that they can be inverted or turned over. The swivel arms can be moved one above the other with the box frames holding mold halves which can be combined to form a complete mold.

Abstract: Disclosed is a rotary-type continuous motion core making machine capable of carrying a number of core mold boxes, each supported on a carrier adapted to move up and down, a sand distributing system adapted to inject a foundry sand mix into each of the core boxes, and a manifold system for distributing curing and purging gases to the core boxes. The machine is capable of completing a core/mold production cycle in a single circle of turret revolution. The vertical movement of the core box carrier, horizontal radial movement of portions of the gas manifold system, and movements of other parts of the machine are generated by the turret rotation and are controlled by a number of stationary contoured cam tracks. Disclosed also is a novel catalyst gas generating system, a core box assembly containing ejector pins in the top portion thereof, and a system for collecting and assembling components into a unified core and mold assembly.

Abstract: Automatic sand mold fabricating apparatus and a method for using the apparatus is disclosed. The present invention provides at least a first cope and a first drag. Preferably, first and second copes and first and second drags are used. Where two pairs of copes and drags are utilized, the first pair will be filled at two diametrically opposed stations while the other pair will be positioned at one of two ejection stations that are both 90.degree. spaced apart from the first and second stations. The pairs of copes and drags alternate between the filling stations that are diametrically opposed to each other and the ejection stations which are 90.degree. away.

Abstract: To permit efficient utilization of expensive equipment in casting mold manufacturing systems, particularly of a molding press, pattern plates are cycled in one loop of a plurality of work stations, including the station in which molding sand is applied to the mold boxes or flasks, and the single press, and a second loop also including the single press and, preferably, also the sand application station is provided in which loose patterns are placed in flasks, so that the common work stations, and principally the molding press, is efficiently utilized.

Abstract: The two halves of the core box in a core blowing machine are mounted on a carrier which may be turned 180.degree. between a blowing position in which sand is blown into the closed core box and a discharging position in which the core box halves are separated in the direction of the axis of rotation and the molded core is ejected. A transfer receptacle moves into the discharging zone between the separated core box halves to receive the ejected core and to withdraw it from the discharging zone while the core box is again being closed and simultaneously turned with the carrier into the blowing position.

Abstract: In a machine for automatically producing flaskless foundry molds by a blow squeeze method between opposed power-operated pattern plates in an opening in a slider which then moves to displace the aperture to a position in which the mold can be ejected, the slider is replaced by two sliders moving in parallel paths on opposite sides of a fixed bolster plate so that two single-sided molds are produced back-to-back, one in each slider. These may be a cope and a drag and may then be assembled together in pairs. Each slider may have two apertures and the molds may be ejected alternately on opposite sides to produce two lines of alternate copes and drags.

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.