SU1235619A1 - Method of producing foundry mould - Google Patents

Description

The invention relates to foundry, in particular, to methods for producing a mold, preferably with a vertical cut using a vacuum forming method.

The purpose of the invention is to increase productivity by eliminating manual labor.

Figures 1-7 illustrate the implementation of the proposed method; Fig.8 is a view of A in Fig.6.

A device for carrying out the proposed method comprises a vacuum chamber 1, a model kit 2, a movable rib 3, a heat chamber 4 with a vacuum frame, a film 5, a flask 6, a sealing film 7, a mechanical knife 8 and a vacuum suction 9.

The method is carried out in the following meal.

The synthetic film is heated with a thermal chamber 4 to a plastic state and

impose on the model kit 2, include a vacuum in the vacuum chamber 1 (figure 1). The film wraps around the model kit together with the edge 3 and the sprue cup. Now, before installing the flask 6, the knife 8, which goes along the rib 3 as a copier, cuts off the excess spitting, and the remainder 10 is sucked into the suction 9. Then the flask (figure 2) is installed with a gap relative to the movable rib 3, which is pressed to the flask, closing all the gaps between the openings in the flask and the model kit (fig.Z). The flask is filled with filler, vibration is turned on, the form is sealed with film 7, air is sucked out of the flask (figure 4). The rib 3 is retracted from the flask 6, and the film is at that time held by the flask vacuum box (Fig. 5) and the mold is removed from the model kit while simultaneously blowing under the plane of the mold from the vacuum chamber 1 (Fig. 6). Next, two half-molds are assembled (Fig. 7).

FIG. g

Suction

Fig.Z

Fy

5

6

Vida

FIG. 7

FIG. eight

Claims (1)

METHOD FOR MANUFACTURING A CASTING FORM, including facing a model with a casting cup with a film, cutting it along the contour of the model, installing the flask, filling the flask with molding material, sealing, applying a film to the flask counter, evacuating the flask, removing the model from the mold, removing the model film and assembling the mold, characterized in that, in order to increase productivity by eliminating manual labor, a detachable element is applied to the model from the side of the gating cup before facing, and after cutting the film, the detachable element is toil to the outer wall of the flask. fi, g. 1 SU ,,, 1235619>