Abstract: Disclosed is a molding machine for simultaneously making upper and lower molds with cope and drag flasks, a matchplate, upper and lower squeezing boards, and a lower filling frame. This machine also includes a cylinder for raising and lowering the lower squeezing board, a driving mechanism that includes pneumatic and hydraulic piping systems for driving the cylinder using an air-on-oil system, and a controller for controlling the driving mechanism. The drag flask, the matchplate, the filling frame, and the lower board define a lower molding space, while the matchplate, the upper board, and the cope flask define an upper molding space such that the controller controls the driving mechanism to drive the cylinder at a low pressure. The lower squeezing board is raised to squeeze the molding sand for simultaneously making the two molds such that the controller controls the driving mechanism to drive the cylinder at a high pressure.

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 molding machine that defines upper and lower mold cavities while cope and drag flasks, having a match plate sandwiched therebetween, are rotated from a horizontal position to a vertical position. An upper squeeze member is insertable into the cope flask. A pressure-applying plane of the upper squeeze member defines an upper mold cavity together with the match plate and the cope flask. A pivoting frame supports the cope and drag flasks, having a match plate sandwiched therebetween, and the upper squeeze member, such that they rotate in unison between a horizontal position to a vertical position. A fixed filling frame abuts the drag flask when the cope and drag flasks are in the vertical position. A lower squeeze member has a pressure-applying plane that is oriented horizontally. The pressure-applying plane of the lower squeeze member defines a lower mold cavity together with the match plate, the drag flask, and the filling frame.

Abstract: A flaskless molding method, wherein a match plate (5) is held between an upper flask (2) and a lower flask (3) and squeeze plates (6) and (7) are inserted into the openings of the upper flask (2) and the lower flask (3) to form an upper manufacturing space and a lower manufacturing space with initial volumes. A foundry sand is filled in the upper and lower manufacturing spaces with the initial volumes through the supply ports of the flask (2) and (3) (first filling). Next, the squeeze plates (6) and (7) are retreated to expand the upper and lower manufacturing spaces more than the initial volumes. The foundry sand is filled again in the expanded upper and lower manufacturing spaces through the supply ports (second filling). After the second filling is completed, the squeeze plates (6) and (7) are advanced to compress the foundry sand in the upper and lower manufacturing spaces so as to manufacture the upper and the lower flasks stacked on each other.

Abstract: A sand-introducing device that uses air for introducing molding sand in a molding space or spaces is provided. The device is provided with air-permeable partitioning plates that define a double-walled structure together with the wall of the body of the device. The air-permeable partitioning plates are easily produced, they can easily inject pressurized air of a desired pressure, and they will not need regular maintenance. The body of the device, which acts as a pressure tank, defines a double-walled structure together with the air-permeable partitioning plates (10, 11), thereby defining chambers (12, 13). In the sand-introducing device that uses air, while molding sand is fluidized by pressurized air injected from the air-permeable partitioning plates, it is introduced in a molding space. Each air-permeable partitioning plate is made of a porous resin or metal.

Abstract: A sand-introducing device that uses air for introducing molding sand in a molding space or spaces is provided. The device is provided with air-permeable partitioning plates that define a double-walled structure together with the wall of the body of the device. The air-permeable partitioning plates are easily produced, they can easily inject pressurized air of a desired pressure, and they will not need regular maintenance. The body of the device, which acts as a pressure tank, defines a double-walled structure together with the air-permeable partitioning plates (10, 11), thereby defining chambers (12, 13). In the sand-introducing device that uses air, while molding sand is fluidized by pressurized air injected from the air-permeable partitioning plates, it is introduced in a molding space. Each air-permeable partitioning plate is made of a porous resin or metal.

Abstract: This invention provides a method for changing a match plate in a molding apparatus for a flaskless upper mold and a lower mold, which method allows easy change of the match plate. This invention is comprised of a first step for moving a existing match plate placed in the apparatus to between a cope flask and a drag flask of one set of flasks in the perpendicular position, and for holding a new match plate between a cope flask and a drag flask of another set of flasks in the horizontal position, a second step for rotating the cope flask and the drag flask holding said existing match plate from the perpendicular position to the horizontal position, and for rotating the other cope flask and the drag flask holding the new match plate from the horizontal position to the perpendicular position, and a third step for moving the new match plate from the perpendicular position to the apparatus, and for moving the existing match plate from the horizontal position to the outside of the apparatus.

Abstract: The disclosed invention provides a molding machine that defines upper and lower molding spaces while cope and drag flasks 12,13 and a match plate 11 clamped therebetween are rotated from a horizontal position to a vertical position, and that readily places a core into a lower mold within the drag flask. An upper squeeze member 14 is insertable into the cope flask 12 with its pressure-applying plane being opposed to the upper face of the match plate 11. The pressure-applying plane defines an upper molding space together with the upper face of the match plate 11 and the cope flask 12. A pivoting frame 23 supports the cope and drag flasks 12,13, a match plate 11 clamped therebetween, and the upper squeeze member 14, such that they rotate in unison between a horizontal position, in which the pressure-applying plane of the upper squeeze member 14 is oriented vertically downward, to a vertical position in which the pressure-applying plane is oriented horizontally.

Abstract: A method and apparatus for molding molds having no flask wherein a match plate having a pattern is put between a pair of an upper and a lower flask having intakes for foundry sand. An upper and a lower molding space are defined by inserting an upper and a lower squeeze device into openings of the pair of the upper and the lower flask having no match plate, and the pair of the upper and the lower flask and the match plate are rotated and moved so that they become perpendicular and then the intakes of the flasks move upward. The upper and the lower molding space are then filled with the foundry sand. The foundry sand in the molding space is squeezed by the squeezing device. The pair of the flasks and the match plate are rotated so that they become horizontal. Then the match plate is removed, the flasks are matched to each other, and the molds are removed from the pair of flasks.

Abstract: A method and apparatus for molding molds having no flask wherein a match plate is put between an upper and a lower flask having intakes for foundry sand. An upper and a lower molding space are defined by inserting an upper and a lower squeeze device into openings of a pair of the upper and the lower flask having no match plate, and a pair of the upper and the lower flask and the match plate are rotated and moved so that they become perpendicular, and are moved so that the intakes of the flasks move upward. The upper and the lower molding space are filled with the foundry sand. The foundry sand in the molding spaces is squeezed by the squeeze devices. A pair of the flasks and the match plate are rotated so that they become horizontal. Then the match plate is removed. While the preceding processes are being carried out, if necessary a core can be installed between the molds, the flasks are matched to each other, and the molds are removed from the pair of flasks.

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: 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: A sand hopper (28) is provided at its lower position (40) with a plurality of nozzles (42) and a plurality of squeeze feet (46), the pressure of which is controlled, and which are located adjacent to a side of each squeeze foot. The sand hopper (28) is supported by supporting means (22, 26) such that it can move vertically. A mold space is defined by a pattern plate having a pattern (74a), a flask (4), a filling frame (52), and a sand hopper (28) having a plurality of squeeze feet (46) disposed above the filling frame (52). By discharging molding sand from the nozzles (42), it is introduced into the mold space. The mold sand (S2) in the mold space is compacted by the squeeze feet by lowering the sand hopper toward the mold space. Since the molding machine is so arranged, both introducing molding sand into a mold space and compacting the introduced molding sand are performed at one station (a molding-sand introducing and compacting station).

Abstract: A molding system to make a sand mold with a frame is provided to receive the lateral loads generated when molding frames are fed out and in by nearby apparatuses and to prevent vibrations generated during a molding operation from being transmitted to nearby apparatuses, so that the area around a factory is prevented from being degraded and so that apparatuses can be easily affixed.

Abstract: The apparatus comprises a table (5), on which a pattern plate (6) is attached, a flask (7), the bottom surface of which can be fitted to the pattern plate (6), a filling frame (30), the bottom surface of which can be fitted to the upper surface of the flask (7), and in which the highest part of its opening is smaller than the lowest part of its opening, a blow head (17), which is used for blowing in molding sand, and for squeezing the blown-in molding sand, and which is placed above the table (5), and a thin plate body (20), which can be inserted into the blown-in molding sand and which is placed around a sand holder (12) that is a part of the blow head (17), in which the highest part of the opening of the filling frame (30) has such a size that the outer surface of the thin plate body (20) can contact the inner surface of the highest part of the filling frame (30), and in which the size and shape of the lowest part of the opening of the filling frame (30) are the same as those of the opening of the flask (7)

Abstract: The machine includes a lifter table for lifting a pattern plate and flask which hold molding sand and a pre-compacting member and a pressing member disposed above the lifter table for horizontal movement and for being inserted into the flask when the lifter table lifts the flask. The pre-compacting member includes a thin-plate body to be positioned slightly spaced apart from an inner surface of the flask or inner and outer surfaces of a pattern when inserted into the molding sand held in the flask. The pressing member includes a squeezing body that presses the molding sand from above.

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: A core box assembly for molding cores includes a first core box and a second core box disposed above the first core box. Each of the core boxes has a cavity. A passage for delivering core material to the cavities in the core boxes extends through the second core box and into the first core box. The second core box is placed above the first core box and core material is injected into the core boxes.

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: A closed core box is provided with one or more inlets for receiving and passing gas fluidized resin-coated sand to fill the interior of such core box, and with one or more screened outlets for allowing egress of such gas. A closed cylindrical or angular sand-fluidizing chamber is provided for each of the inlets, the chamber having one end connectable to a pressurized gas supply and an opposite end communicating with an inlet. At least part of each chamber is filled with resin-coated sand and a non-porous piston is placed on the sand within each chamber, each piston providing an annular gap (i.e. about 1/16 of an inch) with the interior of such chamber to direct the gas supply along the periphery of the chamber interior.

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: The device comprises a filling assembly (6) with a storage hopper (3) for molding material (2), an outlet member (4) for discharging the molding material (2) into the shooting head (1), and a gate (5) for closing the outlet member (4), the filling assembly (6) being mounted for vertical movement on a machine frame (7) for purposes of immersing the outlet member (4) into the shooting head (1) that is to be filled. To ensure that, on the one hand, the filling assembly (6) is filled with the molding material (2) in an accurately predeterminable and reproducible manner and that, on the other hand, the filling level of the filling assembly (6) is accurately determined, the device is designed and constructed such that a weighing device (8) for determining the weight of the filling assembly (6) is arranged between the filling assembly (6) and the machine frame (7).

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: A device for shooting foundry cores with molding materials (1), comprising a shooting head (4) with an inlet side (2) and an outlet side (3), a shooting plate (6) located at the outlet side of the shooting head (4) and accommodating at least one shooting nozzle (5), and a clamping head (7) associated to the shooting head (4) on its inlet side and having at least one air supply (8) for a leakproof application of compressed air to the shooting head (4), the clamping head being preferably vertically movable by means of a cylinder-piston arrangement (9), is designed and constructed for purposes of avoiding local air currents or making the air flow more uniform during core shooting in such a manner that a device (10) for swirling or uniformly distributing the compressed air that flows from the air supply (8) into the shooting head (4) is arranged between the shooting head (4) and the clamping head (7).

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 storage hopper retains the mold core material and an outlet member is connected below the hopper for discharging the mold core material into the core shooting head. The outlet member is inserted into the core shooting head and is mounted on a vertically adjustable machine frame such that it may be inserted to various depths within the core shooting head and may also be removed. A shutoff device in the form of a rotating shutter closes the outlet member. A frame supports the outlet member and the storage hopper and vertically adjusts both for immersion within the core shooting head. A displacement measuring sensor detects the vertical position of the vertical adjustment members in relation to the machine frame. In the method the storage hopper is filled with mold core material, the outlet member is positioned over the core shooting head, and the outlet member is immersed within the core shooting head.

Abstract: A mould chamber including at least one pressing plate is filled by blowing mould sand in through a blowing-in tube ascending at high speed, in which at least some of the blowing-in apertures are adapted to blow the sand in substantially transversely to the ascending movement of the blowing-in tube.

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: The flaskless molding machine includes a drag flask arranged so as to be rotated between a horizontal position and a vertical position, a cope flask arranged so as to be moved up and down when the drag flask takes its horizontal position and to be also rotated between a horizontal position and a vertical position in association with the rotation of the drag flask, and a squeeze plate for the cope flask arranged in the mold flask so as to be movable therein between the upper and lower openings of the cope flask.

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: Sand is charged into a space in a mold flask by a sand feed nozzle provided on the lower end part of a blow head inserted into a sand charge port formed in the top wall of the mold flask. The blow head is further lowered after completion of the charging so as to deeply insert the sand feed nozzle in the sand charge port in order to press the sand in the vicinity of the sand charge port within the mold flask, thereby uniformly compacting the entire sand in the space.

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: A release mechanism for driving a ram of a release mechanism of a core release machine comprises a threaded cylinder integral with the ram and a pin driven by a motor. The threaded cylinder is guided by a cylindrical sleeve positioned in a casing which houses the mechanism. The pin which is provided with a ball thread and imparting an axial movement to the threaded cylinder when the motor is in operative position, is supported in the casing above the threaded cylinder through axial and radial bearings. The motor for driving the pin is positioned in a lid of the casing.

Abstract: A blow tube arrangement and method for controlling the flow of granular mold material to the cavity of a mold or core making machine, in which one or more transverse openings are formed in the tip of the blow tube, which allow flow into the cavity when the tip is inserted into the cavity but which are covered as the tip is withdrawn. A spring urged covering sleeve receives the tip as it is withdrawn from the mold pattern structure to maintain closure of the tip openings.

Abstract: A core shooter comprises a support device for core boxes. The support device is equipped with support elements which can receive core boxes of variable dimensions. The core shooter further comprises a shooting mechanism which comprises a shooting device and an adaptation which provides for device the automatic adaptation device of the shooting to the dimension of the core boxes. The core shooter further comprises a gassing mechanism comprising a gassing head and a further adaptation device. The further adaptation device providing for the automatic adaptation of the gassing head to the dimension of the core boxes. Additionally, the shooting device comprises a plurality of shooting heads.

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: Green sand molds for use in casting operations are made automatically by a matchplate molding system. Features of the system include (1) pneumatic apparatus for filling the cope and drag flasks with sand, (2) a pusher on the drag flask for shifting molds of various shapes to a transfer conveyor, (3) a carriage supporting the drag flask for vertical and lateral movement (4) a lower sand magazine which moves laterally to open and close a sand chute gate while also being movable vertically relative to the gate, (5) a squeeze head movable between various positions enabling control over the volume of sand delivered to the cope and drag flasks, (6) a vibrator for directly vibrating the matchplates, (7) liners for releasably holding molds in the flasks, (8) an accumulating conveyor for transferring the newly formed molds and (9) a pusher for shoving the molds off of the accumulating conveyor.

Abstract: Green sand molds for use in casting operations are made automatically by a matchplate molding system. Features of the system include (1) pneumatic apparatus for filling the cope and drag flasks with sand, (2) a pusher on the drag flask for shifting molds of various shapes to a transfer conveyor, (3) a carriage supporting the drag flask for vertical and lateral movement, (4) a lower sand magazine which moves laterally to open and close a sand chute gate while also being movable vertically relative to the gate, (5) a squeeze head which moves between various positions enabling control over the volume of sand delivered to the cope and drag flasks, (6) a vibrator for directly vibrating the matchplates, (7) liners for releasably holding molds in the flasks, (8) an accumulating conveyor for transferring the newly formed molds and (9) a pusher for shoving the molds off of the accumulating conveyor.

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 support comprising table receives core boxes of variable size. A shooting head adapts automatically to the size of the core boxes. A gassing head adapts automatically to the size of the core boxes.

Abstract: A core or shell blow (shoot) machine, equipped with a quick core-box change device, makes it possible to carry out a quick core-box change in just a few minutes, thereby reducing down time. For this purpose, the core-box change device consists of a twin carrier which is swung hydraulically in a horizontal plane about a vertical axis. The care-box in the machine, after picking up the cope and the cope ejector plate, is lowered by the lift table into the carrier, after hydraulic clamps between the table and the core-box bolster have been released. The core-box change device is then rotated 180.degree., which swings the old core-box out of the machine and, simultaneously, swings the new core-box stack-up into the machine over the lift table. In the meantime, the old blow-plate is removed from the sand magazine, outside of the machine, using the blow-plate removal device.

Abstract: For the production of horizontally divided flaskless foundry molds a mold making plant is employed consisting of a vacuum mold blowing machine, joined with a casting and cooling line and a shake out station. The vacuum mold blowing machine is provide with a pattern plate swapping device and designed in the form of a single station mold making maching, in which drags and copes of a mold are produced alternately. The single mold flask is part of the mold making machine and has means for stripping it from a drag or cope before removal of the same from the machine. This makes it possible to have one core insertion station with space for a plurality of drag without having more than one machine flask.

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: An arrangement for the exchange of implements in foundry or mold casting hines, in which the implement is moved from a changing station towards an implement receiving and work station, and there connected with the implement holder.

Abstract: A mold making machine the production of flaskless molds is made up of a sand supply container, with a blowing and squeezing grid at its lower, that is able to be moved vertically, a hollow pattern plate mount, valve and duct means connected with the said mount, and drag and cope flasks that are fitted around said sand container for vertical motion in relation thereto. At the start of a mold producing operation the drag flask is placed under the cope flask on the container. This design of the molding machine enables it to be used for the alternate production of flaskless drags and copes which are made into block molds.

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.