RU205958U1 - FORMING BOWL FOR PRODUCING CASTINGS ON AUTOMATIC FORMING LINE WITH HORIZONTAL SHAPE CONNECTOR - Google Patents

Abstract

The utility model relates to foundry. The gating bowl for the manufacture of castings on automatic molding lines with a horizontal mold split, made from a core mixture, contains an upper part (1) with a conical inner surface, inlet and outlet openings and a lower part (2) made with the possibility of installing a filter in it. The outer surface of the upper part is made in the form of cylindrical steps and has recesses along the outer diameter of the upper step. The recesses are intended for additional fixation of the hands when placing the bowl in the mold. The inner surface of the lower part is tapered for secure installation of the filter. On the outer surface of the lower part, there are screw elements (10) for installing the bowl into the mold, which contributes to reliable fixation. The bowl is securely fastened in the mold. 3 ill.

Description

The present utility model relates to foundry, namely to devices for supplying molten metal into a mold cavity, and can be used on molding lines with a horizontal mold split.

Closest to the claimed utility model is a ceramic bowl, patent No. 198100 В22С9 / 08, containing a conical upper part with inlet and outlet openings and a cylindrical inner lower part with the ratio of the internal diameter D _{1 of the} inlet of the conical upper part to the internal diameter D _{2 of the} outlet of the conical parts equal to 1.5-2.5, while the conical upper part is made at an angle α to the central axis equal to 10-20 ° with the possibility of installing the filter on the cylindrical inner lower part made with the possibility of installing a ceramic foam filter.

The known utility model has the following disadvantages:

- the bowl of the existing design cannot be used on automatic molding lines with horizontal mold splitting in the manufacture of large castings;

- unreliability of fixing the bowl in a sandy-clay form by means of a model mass;

- the high cost of purchasing a ceramic bowl.

The claimed technical solution is aimed at the possibility of using the bowl on automatic molding lines with a horizontal split of the mold in the manufacture of large castings, ensuring reliable fastening of the bowl in the mold and eliminating the expensive purchase of a ceramic bowl.

The technical result is achieved by the fact that the gating bowl for the manufacture of castings on automatic molding lines with a horizontal shape split, containing a conical inner upper part with inlet and outlet openings and a lower part with the possibility of installing a filter in it, is made of a core mixture, the outer surface of the upper part of the bowl is made in the form of cylindrical steps with recesses along the outer diameter of the upper step, while the inner lower part of the bowl is made conical, and screw elements are made on the outer surface of the lower part of the bowl.

Figure 1 shows a sprue bowl, General view;

Figure 2 is a view A in figure 1;

Figure 3 - section b-B in figure 2.

The gating bowl for the manufacture of castings on automatic molding lines with a horizontal mold split is made of a core mixture and contains the upper and lower parts, 1 and 2, respectively.

The upper part 1 of the bowl has a tapered inner surface 3 with inlet and outlet openings, 4 and 5, respectively. The outer surface of the upper part 1 of the bowl is made in the form of cylindrical steps with recesses 6 along the outer diameter of the upper cylindrical step 7. The outer surface of the upper part 1 of the bowl is stepped provides the best conditions for gripping the bowl with hands during transportation and when installing the bowl in the mold. The recesses 6 are designed for additional fixation of the hands when the bowl is installed in the mold.

The design of the sprue bowl is designed in such a way that the base 8 of the lower cylindrical step 9 acts as a supporting element and allows the bowl to be stable during operation, and the height of the upper part 1 of the bowl allows an additional increase in the hydraulic head of the poured metal, which ensures better filling of the mold cavity.

On the outer surface of the lower part 2 of the bowl, screw elements 10 are made, intended for installing the bowl in the mold, which contributes to reliable fixation of the bowl in the mold, thereby preventing the bowl from floating during pouring metal into the mold.

The inner surface 11 of the lower part 2 of the bowl is made conical, which makes it possible to securely install the filter 12, if necessary.

The declared sprue bowl for the manufacture of castings on automatic molding lines with a horizontal shape split works as follows.

After the process of assembling the half-mold of the top and the half of the bottom, a sprue bowl is installed in the riser of the gating system. The gating bowl is installed manually by screwing it in clockwise, while the gripping of the bowl is carried out in the places of the recesses 6 of the upper cylindrical stage 7. The gating bowl is screwed into the riser of the gating system until the gap between the base 8 of the lower cylindrical stage 9 of the upper part 1 of the bowl and the gate disappears. form. If necessary, a filter 12 is installed in the lower part 2 of the gating bowl. Next, the assembled mold is fed to the casting section and molten metal is poured through the gating bowl.

The core mixture from which the sprue bowl is made has high strength characteristics, which make it possible to exclude erosion of the bowl surface when pouring metal into the mold.

The sprue bowl is made in-house on our own equipment, which allows you to exclude expensive costs for the purchase of a ceramic bowl.

The gating bowl for the manufacture of castings on automatic molding lines with a horizontal shape split has been tested in the production of KAMAZ PJSC. Testing results are positive.

The use of the proposed technical solution allows:

- to use the sprue bowl on automatic molding lines with horizontal mold separation in the manufacture of large castings, due to the fact that the outer surface of the upper part of the bowl is made in the form of cylindrical steps, which contributes to the stable position of the bowl in the process of pouring metal into the mold;

- to ensure reliable fastening of the bowl in the mold, due to the presence of screw elements on the outer surface of the lower part of the bowl;

- to exclude the expensive purchase of a ceramic bowl, due to the manufacture of a sprue bowl from a core mixture in our own production.

Claims (1)

A gating bowl for the manufacture of castings on automatic molding lines with a horizontal shape split, containing an upper part with a conical inner surface having inlet and outlet openings, and a lower part made with the possibility of installing a filter in it, characterized in that it is made of a core mixture, the outer surface of the upper part is made in the form of cylindrical steps and has recesses along the outer diameter of the upper step, while the inner surface of the lower part is made conical, and screw elements are made on the outer surface of the lower part.

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