Abstract: The machine for filling moulds with metal to be cast, in which a casing is provided comprises a fixed body and a mobile body. The mobile body is driven by a cylinder. The casing can be provided with a vacuum chamber which when closed houses, with the ability to rotate, a sand mould clamped in a central turning body of a support which can be moved by another cylinder towards a lower injector which supplies the mould with the appropriate quantity of cast metal from a lower metering store. A pressure gas is inserted into the metering store through a connection. The metering store receives the cast metal from a larger tank with the assistance of a seal controlled by a level sensor. The machine also includes a metering ladle positioned between a filling plate and the mould itself. The metering ladle has heating elements.

Abstract: A coreshooter includes a table on which a corebox for molding articles is positioned, and a blowing cartridge supplying sand into the corebox. The corebox is housed in a bell which forms about the corebox a chamber. The bell is fitted with a connection to a vacuum pump. A valve is provided between the cartridge and the interior of the corebox. Prior to the opening of the valve which causes the blowing cartridge to discharge sand into the corebox vacuum is provided inside the corebox through holes therein for expelling the air. The vacuum considerably enhances the discharge of the blowing cartridge even when highly complex or sizeable cores are made without having to use special blowing nozzles or heads.

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 motor is mounted on a support positioned under a sand-supplying hopper. The motor is provided with sand-stirring vanes and has a protective plate to protect the motor from sand discharges. An air discharge valve is provided annularly outside the hopper and includes an annular plunger which has a dihedral-shaped front face for closing a correspondingly-shaped annular aperture connected to an air source and is displaceably positioned within an annular chamber provided in a support ring of the valve.

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: The system includes two platforms vertically movable along guides provided on a fixed support. A top platform is swingable between a horizontal position in which it superposes a lower platform, and a vertical position. A blowing plate is positioned on the top platform. The system is provided with a double catch which is selectively engageable with the bottom wall of the top platform when the latter is in the horizontal position, and with the fixed support when the top platform is in the pivoted-away position.

Abstract: Shooting device for core blowing machines, which may be coupled to the mouth of the sand magazine prior to the shooting operation and separated therefrom at the end of said shooting operation in order to change the magazine. The device includes a ram, alternatively displaceable by hydraulic means, designed to couple to and separate from the mouth of the magazine, through which the air discharged from the reservoir reaches the magazine with the aid of a shooting valve which cuts off the supply from the reservoir by means of the pressure source acting against the piston and specifically against one of the surfaces of the piston having a considerably larger surface area than that against which acts the pressure from the reservoir, aperture whereof is effected automatically by cutting off the pressure source supply both to the valve itself and to the reservoir.