SU142732A1 - Device for calcining casting molds - Google Patents

Description

Devices are known for calcining molds, molding, pouring, and knocking out when casting on melted models. In such devices, the molds subjected to calcination are first placed in special cassettes and filled with filler from a hopper located above the calcined compartments.

The known devices have a number of drawbacks: the operations of loading the cassettes with blocks of forms, filling the filling agent into the quenched cell after calcining the forms are performed manually, there are also significant heat losses during transportation and filling of the hot filling material.

The proposed device provides automation of casting operations and reduction of heat losses. This is achieved by the fact that the device is made in the form of a rotary-type rotary kiln, the chamber of which in its lower part has a hopper with a filler that is detachable from the working part of the chamber by a gate.

The device in cross section is shown in FIG. I at the time of calcination of the form; in fig. 2 - at the time of molding; in fig. 3 - at the time of casting metal in forms; in fig. 4 - at the time of knockout.

The device for the casting of casting molds during casting on the produced models is a heating / drum-type furnace mounted on rollers 2. The furnace chamber 3 can be divided into two parts by the spindle 4, driven by the hydraulic cylinder 5. The heating elements 6 are installed on the side walls of the upper part of the chamber. The lower part of the chamber is used as a warmed hopper for the filler 7 (sand). From the ends, the furnace is equipped with valves that open the working chamber during the loading and unloading of molds and castings. Along the way 8, the platform 9 moves with blocks of forms 10. With help 1, and the drive mechanism 11, the furnace can be rotated 180 °.

At the time of calcination of the molds, the furnace is turned upwards by the platform, and the gate is open. After the termination of calcination, the furnace is turned through 180 ° FIG. 2), the sand fills the part of the chamber with the installed unit (% of the mold number). After molding, the gate is closed, locking the sand in. chamber, and the furnace is turned to its original position (phi, g. 3). The metal is poured into molds (casting moment). After some holding, the gate is opened, and sand is poured into the bunker (Fig. 4), emptying the casting (moment of knockout).

After finishing the embossing, the platform with the casting blocks with the help of the conveyor belt is replaced with a new one, and the castings are sent to pre-clean the castings from the ceramic casing.

Subject invention

A device for calcining casting molds for casting on produced models, characterized in that, in order to automate the casting operation, and to reduce heat losses, it is made in the form of a rotary kiln furnace, whose chamber in its lower part has a filler bunker separated from. the working part of the camera gate.

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