SU1470426A1 - Apparatus for bilateral pressing of moulds - Google Patents

Abstract

The invention relates to the field of foundry, in particular to devices for sealing molding sands. The aim of the invention is to obtain forms with the fret upwards. The device comprises a bed 1, two press cylinders mounted coaxially on the bed 1 and the traverse, two filling frames 3 and 5, one of which is located under the hopper 2, having a drive gate 4, and the other over the lower press cylinder 10, the extension plate 8 with models 9 and countermodel 11. The lower filling frame 5 is made in the form of a chamber, and the gate 4 is located under the upper filling frame 3 and at the level of the upper end of the lower filling frame, the countermodel 11 being fixed on the lower pressing cylinder 10, and the extended plate 8 with fashion E 9 fixed to the lower cylinder 10. A proposed forging machine allows to broaden the technological capabilities. 1 il.

Description

FIELD OF THE INVENTION The invention relates to foundry, in particular, to press molding machines.

The purpose of the Invention is to obtain forms upwards.

The drawing shows a device for two-sided pressing of casting molds.

The device comprises a frame 1, a hopper 2, a filling frame 3, a gate 4, a chamber 5, piston cylinders 6 and 7, a stretching plate 8, a model press cylinder 10, a counter model 11 a branch pipe 12, a milling cutter 13.

The device works as follows.

Opoka 14 represented by itself

The pulsating vertically-closed conveyor unit enters under the hopper 2, the upper filling frame 3 and the gate 4 are located at the bottom of the flask. In this position, from the hopper 2 into the barrel, and the filling frame 3, closed at the bottom by the gate 4, comes in a mixing mixture. Upon filling with the mixture, the flask, together with the filling frame 3 and the gate 4, moves to the pressing position, after which the gate 4 returns to its original position under the bunker 2,; Opening the opening of the filling frame 3. Following the sliding gate 4, when the molding mixture came out into the chamber 5, it returns to its original position and the filling frame 3. Then, on the box left in the pressure position, lower the 8 plate with the models 9. Thereafter, press cylinder 10 pushes counter model 11 until spring chamber 5 comes into contact with the flask. At this time, compressed air is supplied through nozzle 12 into the cavity of counter model 11, causing the mixture.

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five

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suspended in chamber 5, in suspension. Then the press cylinder 10, continuing to lift up the countermodel 11, compacts the molding sand in suspension. Having completed the compaction of the mixture, the pressing cylinder 10 returns the countermodel 11 and the chamber 5 to the initial position, extends the models 9 and, together with the extension plate 8, returns to the initial position.

At the end of these operations, the mold is moved to the position where the excess mixture is removed from the mold counter-mill by means of the mill 13. This completes the manufacturing of the mold half. The empty flasks are moved to the forming position along the lower branch of the vertically closed pulsating conveyor.

The device allows stably receiving half-molds with fret up of the viewer quality with high productivity.

Claims (1)

Invention Formula A device for two-sided pressing of casting molds, containing a frame, two press cylinders mounted coaxially on the frame and traverse, two filling frames, one of which is located under the bunker, and the other is above the lower press cylinder, the extension plate with models and counter models, j This is due to the fact that, in order to obtain molds with a fret upward, it is equipped with a gate located under the upper filling frame and at the level of the upper end of the lower filling frame, which is in the form of a chamber s forging fixed to the lower cylinder, but against zhna plate with models mi - on the upper press cylinder.