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 core delivery device of a machine for making cores from fluidized sands in hot boxes comprises apparatus for receiving cores and delivering them onto bearing plate bars mounted on a support frame. The apparatus in question is made in the form of a pantograph positioned on a trolley which, in turn, is mounted for reciprocation on the support frame. The pantograph is provided with core receiving bars which are lifted and lowered by an appropriate mechanism.

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 characteristic feature of the invention lies in that a container for each liquid component, incorporated in a sand machine, is provided with an actuator intended for effecting forcible opening of the container spring-loaded valve, a device for controlling this actuator, and an eccentric mounted on the shaft of a drive for actuating feeders and acting on the control device; each proportioner for a fluid component is provided with spring-loaded diaphragms, of which one is adapted to control a feeder for loose components and the other, to close the feeder outlet. The connection between the feeders is effected by an intermediary member connected with the spring-loaded diaphragm and brought in contact with a cam mounted on the shaft of the drive for feeders and set at an angle of 2 to 15 deg. relative to the eccentric.

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.