Abstract: 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.

Abstract: A core molding machine which can be made smaller while having a favorable core sand filling property is provided. The machine comprises a core box having a pair of laterally separable dies and a sand filling device, having a blow head disposed under the core box, for filling the core box with core sand directed upward from the blow head; the blow head having a sand blow chamber for guiding the core sand to the core box while being connected to the core box and a sand storage chamber communicating with the sand blow chamber; the sand filling device having a compressed air supply unit for supplying a compressed air for blowing the core sand into the core box and an aeration air supply unit for supplying an aeration air for floating and fluidizing the core sand within the sand blow chamber.

Abstract: A one-piece core-making technique used in producing railway truck bolsters and side frames, which includes the following steps: 1. After scraping the top of a core box, applying a shaped top mould (11), which is precisely located, from top to bottom. 2. Press or slightly hit the top mould (11) to make sure the top mould covers/caps the scraping surface. 3. Keep pressing to make sure that the flat scraping surface was pressed to a required curved shape, like the shape of the top mould (11). 4. Last, it will become a one-piece core with a partially integrated inner cavity section. The one-piece core made by this technique has a smooth surface. This technique also can improve the internal quality of the product and ease work intensity.

Abstract: A method of removing a molded article, which makes it possible to remove easily said molded article without causing deformation and damages thereto and an apparatus for same. The method comprises removing a sand core W which is obtained using a sand core forming mold 12 comprising a fixed and movable molds 21 and 31 from a sand core forming mold 12 by a separating movable mold 31 from the fixed mold 21 to perform a mold opening. The fixed mold 21 is provided with a fixed mold side core 23 having a front end face 23a forming a part of a first molding face 22, which is extendable and retractable in a mold opening direction A1. The movable mold 31 is provided with a movable mold side core 33 having a front end face 33a forming a part of a second molding face 32, which is extendable and retractable in a mold opening direction A1. The relation in which the sand core W is held between both cores 23 and 33 is kept by extending both cores 23 and 33 in a mold opening direction A1.

Abstract: Tooling includes an inflatable arbor for forming a backdraft cavity in a foundry sand core. A core handling device includes an inflatable arbor, similar to the one used for forming the backdraft cavity in the sand core, whereby the lifting device arbor, when in its deflated state, may be inserted into the backdraft cavity of the sand core and then inflated to grip and become locked to the sand core.

Abstract: A process for inserting cores into a casting mold includes inserting a plurality of individual cores into a template; forming a core group by joining together the plurality of individual cores within the template using a bracing and securing device which is detachable; dipping the core group into a founder's black bath to provide a coated core group; drying the coated core group; inserting the core group after drying into the casting mold; and removing the bracing and securing device. The process advantageously additionally includes providing a plurality of core groups that form a core assembly for a casting mold; forming a core set by joining together the plurality of core groups using a bracing and securing device; dipping the core set into a founder's black bath to provide a coated core set; drying the coated core set; inserting the core set after drying into the casting mold; and removing the bracing and securing device.

Abstract: The injection tube for injecting and gassing of foundry sand in cavities in a core box has a first passage for passing sand and a second passage for passing hardening fluid. Sand may be injected simultaneously to the introduction of hardening fluid into the cavities. Alternatively, sand may be injected prior to introduction of hardening fluid into the cavities.

Abstract: The core box includes a cavity therein, a vent in fluid communication with the cavity, ejector members, and apparatus coupled to the ejector members for passing a fluid through the vent into the cavity.

Abstract: Ready-to-pour shells or core assemblies produced utilizing at least two in-line core shooting machines (1), each core shooting machine (1) having two, at least slightly differing sets of tools (4), each set comprising an upper tool (2) and a lower tool (3), and identical conveyor plates (5) serving, on the one hand, as the lower tool (3) of the first core shooting machine (1) and, on the other hand, as for transporting the core (6) or the core assembly along a transfer path (7) through the apparatus.

Abstract: An apparatus for shooting foundry cores or molds with a shooting arrangement (1), a set of tools comprising an upper tool (6) and a lower tool (7), and a tool change mechanism (8) rotatable about a vertical axis (10) and comprising two tool change frames (9), each of the tool change frames (9) being adapted for alternate rotation into and out of the shooting arrangement (1), is designed and constructed for optimal exploitation or utilization such that the tool change frame (9) rotated into the shooting arrangement (1) serves to receive the lower tool (7) carrying the cores (11), and that the lower tool (7) carrying the cores (11) is rotatable out of the shooting arrangement (11) and at the same time the other tool change frame (9) can be rotated into the shooting arrangement (1) with a preferably cleaned lower tool (7).

Abstract: Core sand material is received in an enclosed chamber and is forced into the cavity of a mold by compressing the air above the sand material with essentially no mixing of the air and sand material. The air is compressed by a piston which forces a pressure packer plate downwardly above the core sand material which is held in the bottom of the chamber by a specially designed baffle control plate assembly ready to be forced by the compressed air into the mold.

Abstract: The device is constituted by a prism-shaped structure which has flat faces, is internally hollow and is rotatably mounted, with preset stops, about a horizontal axis which lies at right angles to the direction of movement of the casting head. A core box is mounted on at least two oppositely arranged faces of the rotating prism-like structure and supports a lower half-mold and associated plates for extracting the finished core; each one of the lower half-molds can be placed in succession, upon rotation of the prism-like structure, at the movable upper half-mold so as to allow, by means of a single upper half-mold, to mold a core in each one of the lower half-molds and to simultaneously extract the previously finished core from the oppositely arranged half-mold.

Abstract: A blow head or gassing head of an automatic core machine, which produces sand casting cores in a core box is formed of a downwardly opening box-like frame having a bottom closure plate. The heads may be alternatively used to respectively deposit a sand and binder material or to flow gas into a sand-filled core box cavity positioned beneath the head. The closure plates are provided with openings through which either the sand-binder material may drop from the blow head frame into the core box cavity or through which gas may flow from the gassing head frame into the cavity. The plate is loosely positioned beneath the frame and is clamped tightly upwardly against the bottom peripheral edge of the head by a spaced pair of elongated, rigid rails which engage and support the opposite side edges of the plate. A rail holding a clamping mechanism selectively moves the rails upwardly for clamping the plate against the frame and downwardly to free the plate relative to the frame.

Abstract: A retention mechanism for an injection head wherein the injection head includes a feed tube capable of use with an injection bell and an injection plate wherein the bell and plate carry clamping apparatus actuable to secure the plate to the bell includes an actuator mounted on the feed tube and a force transmitting apparatus also mounted on the feed tube. The force transmitting apparatus is removably engageable with the clamping apparatus so that the force transmitting apparatus is movable by the actuator to actuate the clamping apparatus. An injection bell and/or an injection plate can be rapidly removed and replaced with a different injection bell and/or injection plate without the need for lengthy adjustments.

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 one-piece water jacket core for an internal combustion engine is formed by providing a first core box portion and a second core box portion adapted for assembly and formation of the one-piece water jacket core. The first core box portion includes a first cavity adapted to form a lower portion of the one-piece water jacket core and the second core box portion includes a second cavity adapted to form an upper portion of the one-piece water jacket core. A plurality of movable members are pivotally carried adjacent to, and preferably by, one of the core box portions. Each of the pivotal movable members includes a portion adapted to form a water jacket port and to be pivoted, after assembly of the first and second core box portions, to a position forming one of the water jacket ports in the one-piece water jacket core. The invention is particularly adapted for the formation of one-piece water jacket cores with a cold-cure process.

Abstract: A handling apparatus for a core molding machine is capable of moving a core box portion between a molding position and an eject position using only a single actuator. A carriage carries a platen that supports a core box portion wherein the platen is rotatable about a pivot axis relative to the carriage. The platen carries a roller that rolls on a cam surface adjacent the carriage. As the carriage is retracted away from a molding position, the roller rolls over the cam surface and permits the platen to pivot relative to the carriage downwardly toward the eject position.

Abstract: Green sand is packed as molding sand into a compression mold and the green sand is precompacted in the mold using a hydraulic press and thereafter is finally compacted after the precompaction wherein prior to precompaction recesses formed in the molding tools are subjected to a vacuum for drawing the molding sand into the recesses. In this way, even complicated mold cores can be produced satisfactorily and efficiently from green sand.

Abstract: An improved core making machine having a frame and capable of producing cores at a molding position within the frame is easily configured to include one or more horizontal core box handling components and/or one or more vertical core box handling components. The machine is readily adaptable to many different foundry needs.

Abstract: The apparatus includes a casting core forming die, a mold sand feeder with an opening, a mold sand tank, a suspension device for lifting and for lowering the mold sand tank, supporter and mover for the mold sand tank between a first position where it can be charged with mold sand, and a second position where the mold sand is to be transferred to the casting core forming die, a device for weighing the mold sand tank when it is lowered onto the supporter and mover, and an opener and closer for the opening of the mold sand feeder upon the weighing device emitting a signal.

Abstract: A foundry core blowing machine includes an upright frame with a blow head for a sand-resin mix fixed at the top. Sectionalized vertically movable rods extend through bushings at the top and bottom of the frame. Fixed to the rods are a cope support and a secondary table. The secondary table supports the cylinder of a cope-drag clamp piston-cylinder assembly with the rod of such assembly being connected to a primary table thereabove which slidably moves on the rods. The secondary table and the rods secured thereto are elevated independently of the cope-drag clamp so that the clamped cope and drag may be elevated to be clamped against the blow head, lowered for interposition of a gassing head, and reclamped for cure, all while the cope and drag remain firmly clamped together. Only after curing are the cope and drag unclamped for lowering, stripping and removal of the core from the machine.

Abstract: A core box shuttle system includes a shuttle car movable along a path, a movable shaft, a guiding surface carried by the shuttle car having a longitudinal extent transverse to the path and a slip-type connection between the movable shaft and the guiding surface whereby movement of the movable shaft is converted by the slip-type connection into movement of the shuttle car along the path.

Abstract: In a core blowing machine, a core collecting device including a plurality of core collecting trays is provided, which is positioned at a core removal area of the machine and comprises a support bed on which a first set of guides is provided for guiding a carriage in a longitudinal direction thereof. A frame common for all core collecting trays is integrally connected to the carriage. The frame has a second set of guides which are transversal to the first set. A slide block is positioned on each pair of transversal guides and a tilting support holding the corresponding tray is fitted on each slide block. A tilting cylinder is provided for each tray, which is connected between the slide block and the support.

Abstract: A foundry core blowing machine includes an upright frame with a blow head for a sand-resin mix fixed at the top. Sectionalized vertically movable rods extend through bushings at the top and bottom of the frame. Fixed to the rods are a cope support and a secondary table. The secondary table supports the cylinder of a cope-drag clamp piston-cylinder assembly with the rod of such assembly being connected to a primary table thereabove which slidably moves on the rods. The secondary table and the rods secured thereto are elevated independently of the cope-drag clamp so that the clamped cope and drag may be elevated to be clamped against the blow head, lowered for interposition of a cure head, and reclamped for cure, all while the cope and drag remain firmly clamped together. Only after curing are the cope and drag unclamped for lowering, stripping and removal of the core from the machine.

Abstract: A core machine is arranged to automatically refine the shape of a sand core upon removal of the core from the machine. The core machine uses a core box to form a core. After formation of the core and separation of the core box halves a shaping member is moved into a space between the core box halves. As the core is ejected from the core box and removed from the machine it passes through the shaping member which refines the shape of the core. The machine may also be used for dimensional tolerancing about the parting line of the core box.

Abstract: A foundry machine for forming molds or cores from a molding material such as sand provides completely automated loading and unloading of tooling elements (24). The tooling elements (24) comprising a sand magazine (36), blow plate (34), combined gassing manifold and top ejector unit (32), upper mold box (30), lower mold box (28) and bottom stool (26) are automatically transferred, in stacked, separable relationship, by tracks (40) to a vertically displaceable, work table. Vertical displacement of the work table (42) sequentially elevates the tooling elements (24) to positions within a mainframe (10) where automatically operated clamping means secure the appropriate tooling elements (24) in respective operating positions. The gassing manifols (32) includes an ejector pin assembly (274, 280) mounted therewithin.

Abstract: In a method of producing cores for foundry purposes, with the cores being composed of at least two core sections and being firmly joined with one another, the individual core sections are molded separately in a core mold composed of at least two mold sections. At the end of a molding process for the individual mold sections, their core mold is opened in such a manner that the core section remains connected with a mold section. Then the individual core sections to be joined, together with their mold sections, are moved into an assembly position and are joined together by defined relative movements of the mold sections with respect to one another. After the joining process, the one mold section is released first and then the assembled core is ejected from the other mold section.

Abstract: A method of producing a mold core from green sand, wherein green sand is blown into a mold cavity which is sized to be greater than the size of the mold core to be obtained, so that a preformed mold body is prepared. The preformed mold body is then compacted by a compacting die having a cavity recess which is sized in conformity with the size of the mold core to be obtained, until the preformed mold body size is reduced to the final stage. In consequence, the green sand is compacted to develop uniform distributions of strength and hardness over the entire portion of the mold core as the product.

Abstract: A foundry sand blowing apparatus for blowing foundry sand into a mold in forming a die such as a core for use in shell mold process or the like comprises a foundry sand storage tank provided with an eject pin. The eject pin is movable between an ejecting position in which it projects outside the storage tank through a sand discharge port provided in the tank to be aligned with the sand blowing port of the mold and a retracted position in which it is retracted from the sand blowing port into the tank. The tank is further provided with an eject pin driving mechanism for moving the eject pin to the ejecting position to eject the product away from the mold and to the retracted position.

Abstract: An apparatus for producing a hollow foundry core, whereby core halves are first formed and fully hardened on an inner hollow-mold part and an outer mold-box half. These core halves are then sprayed with an adhesive and joined to form a finished foundry core. The apparatus reduces the production costs and improves the accuracy as to the size of the cores. The forming of the core halves on a center plate and the bringing together of the core halves respectively occurs by moving together both core-box halves in one operation.

Abstract: The method of fabricating a metal shell golf club head includes forming a core to the form of the inside surface of the shell; forming a plug integral with the core to project outwardly therefrom, the plug formed to outline peripheral shape conforming to the inner peripheral edge of a sole plate opening in the head shell; forming at least one gripper finger opening and at least one locking recess in the side of the plug, the core characterized as being soluble in a fluid solvent; forming a wax shell about the core while locating the plug in fixed position in a mold to hold the core in predetermined position and while maintaining a locking plunger in the formed recess; and removing the core and plug relative to the wax shell by dissolving the core and plug in the solvent; the core being transferred between stations (at which the (a) and (b) steps are carried out) by gripping and bodily displacing the plug which is integral with the core.

Abstract: An apparatus for the production of cores from fluidized sands in hot boxes comprises individual mechanisms for joining and disjoining top and bottom sections of core boxes, which are placed beyond the confines of the latter. The joining mechanism incorporates at least two spring-loaded grapples mounted on individual shafts, fitted in satellites and positioned on a transport device, so as to carry core boxes. Located at one end of each grapple is a wedging member which co-operates with a wedging member provided on the top section of each core box. The disjoining mechanism includes stops, positioned on a support frame, and rollers mounted on the other end of each grapple for interaction with the stops.

Abstract: A machine for making mould cores from flowable sand mixtures in hot multi core boxes including a supporting frame carrying a conveyor whereon core boxes are placed, each of the boxes having a top and a bottom piece and mechanically interlinked main and additional gates. The gates are adapted to close or open respectively the central and peripheral core print openings of the core boxes while interacting with their respective individual drives. When the main gate and one of the additional gates interact with their respective individual drives made fast on the supporting frame at the pressing mechanism, they close respectively the central and peripheral core print openings. When the main gate and the other additional gate interact with their other individual drives made fast on the supporting frame before the splitting-up mechanism, they open the central and peripheral core print openings.

Abstract: A foundry core or mold machine utilizes a horizontally extending frame pivoted at one end which fixedly supports one box half or cope and movably supports the other box half or drag. A power actuator pivots the frame to clamp the box halves closed against a blow head or gassing head which may be shuttled thereabove. The drag box half is mounted on a cradle on the frame for movement toward and away from the cope or fixed box half and for pivoting movement to bring the box to a core or mold discharge or an inspection or disassembly position when the box halves are not clamped against the blow head or gassing head. Each box half includes a machine actuated stripping mechanism to insure removal of the core or mold both from the cope and drag with the latter then placing the core on a discharge conveyor. The conveyor may be of the flat belt type canted slightly to present a flat surface to receive the core or mold.

Abstract: A feature of the present invention is that an apparatus comprises an actuator of mechanisms for pressing and moving a batching chamber with a double-action cylinder whose internal ram is connected rigidly to a pressing plunger, and an external ram, to the batching chamber formed with interconnected parts having a horizontal groove at the point of their connection, the horizontal groove accommodating an additional gate with a port operated by an independent actuator. The internal ram mounts a device for adjusting the position of the pressing plunger, whereas the top head of the actuator of the mechanisms for pressing and moving the batching chamber accommodates a device for adjusting the position of the batching chamber, the top part of the batching chamber having a port providing access to the device adjusting the position of the pressing plunger.

Abstract: A foundry core making machine is disclosed which produces large or fragile cores. The core is initially made in two parts, which are later adhered together by movement between first and second stations. The separate core halves are made in third and fourth stations and then relatively moved to be in the first and second stations, vertically one above the other, and with flat surfaces facing each other. The core box booking means is utilized to move the lower core half upwardly against the upper core half to have the two adhere together. This same booking means was previously used to press vent grooves in one core half so that when the two core halves were assembled, a generally centrally extending core venting aperture was established. The core box ejection means then ejects the completed core from one core box in a carefully controlled movement.

Abstract: A feature of the present invention is that an apparatus for manufacturing foundry cores is provided with a device for fastening together halves of core boxes, located before a heating chamber, and with a device for unfastening the halves of the core boxes, arranged behind the heating chamber, each of the core boxes comprising two horizontal rods with conical elements placed in the bottom half thereof and cooperating with the above devices for fastening and unfastening the core boxes, and two vertical rods secured to the top half of the core boxes and having at their bottom ends slots and conical orifices cooperating with the conical elements of the horizontal rods.

Abstract: A casting mold manufacturing process and apparatus, which sand of the mold contains water-soluble paste of binder. The sand is previously heated in a sand storage tank by micro-wave heating or high frequency. The sand temperature and humidity, and volume of the binder contained in the sand are freely controlled. The preheated sand is blown by a preheated air to supply it to a molding flask placed under the storage tank. The preheated air is controlled in its humidity and warmness.

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 foundry molding machine is disclosed wherein a core or mold is molded from moldable material such as sand in first and second mold boxes having a cavity. The cavity is filled with the sand and is then cured to form the mold. The first and second mold boxes are separated so that the mold remains in the first mold box with a downwardly facing cavity. Any of several means may be used to assure that the mold remains in this downwardly facing cavity. A transfer conveyor is then moved to a position closely beneath the mold. The first mold box is then moved upwardly as ejection means acts on the mold to eject it downwardly onto the closely spaced transfer conveyor. The transfer conveyor then moves out from underneath the first mold box to remove the completed mold and the cycle repeats.

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: A machine is disclosed for producing rigid sand cores from a molding mixture of a refractory granular material such as sand and a hardenable binder. These rigid sand cores then are used in foundries for metal casting. The machine of the present invention is capable of producing several different types of rigid sand cores including hollow shell sand cores, hot box cores and cold box cores. The machine includes means for curing the molding mixture used to produce shell sand cores and hot box cores by applying heat to the molding mixture after it is placed in a core or molding box. Other means are provided in the machine for curing cold box cores by applying a gas catalyst to the molding mixture after it is placed in the core box. The machine of the present invention is automatically controlled by a circuit arrangement which can be programmed by the machine operator.

Abstract: A system for making sand molds each having associated therewith a core member composed of a core element or a network of core elements is disclosed. The system includes a machine for making and depositing onto a conveyor, mold sections having joint faces in engagement to form a string of closed-up mold sections. Each mold section has a mold cavity defined in its joint face. A core making machine is positioned adjacent the string of closed-up mold sections and include at least two core box sections, each having a joint face and being arranged for mating of their joint faces for molding a core member therebetween. One of the core box sections retains the mold core member when the faces of the core box sections are parted. The core box section is placed into an orientation such that its joint face is parallel with the exposed face of the last mold section. A core mask is provided for fetching the core member from the core box section and transferring the core member to the last mold section.

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: A moulding process includes closing a multi-part die onto hollow-forming members to produce a hollow core mould. The mould is used in the "cold" process to produce a hardened foundry core about the cavity-forming members. Parting the die causes the cavity-forming members and the hardened core to be pivoted so that the hardened core rests on a conveyor belt with the longitudinal axes of the cavity forming members aligned with the longitudinal axis of the conveyor belt and with the cavity forming members lying in respective slots in a web fixed transverse to the conveyor belt. Subsequent movement of the conveyor belt causes the web to abut the hardened core and to extract the cavity-forming member from the hardened core as the hardened core is moved on the conveyor belt. In a modification of the process, the cavity forming members are partly extracted from the hardened core before the pivoting movement takes place.

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.