RU1804369C - Apparatus for manufacturing molds - Google Patents

Abstract

Usage: in the foundry industry for densification of the molding mixture in the manufacture of cylindrical or conical molds, specifically for the manufacture of the shape of the upper neck of the roll of a rolling mill. SUBSTANCE: device for making molds includes model 1, several rubber elements 2, a volume cover 4 with holes through which the molding mixture is fed, a flask 5, a base plate 6 and a conveyor 7. The rubber elements are filled with air and inflated compact the molding sand. 2 ill.

Description

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The invention relates to foundry and is intended for densification of the moldable mixture in the manufacture of cylindrical or conical molds, specifically for the upper neck of the roll of a rolling mill.

The purpose of the invention is the complete mechanization of the molding process, increasing its productivity and uniform compaction of the molding mixture when creating tall cylindrical or conical casting molds.

Figure 1 shows the proposed device; figure 2 is a view of pi arrow A in figure 1.

The device comprises a model 1, rubber elements 2, a volume cover 4 with holes, a flask 5, a model plate 6 and a conveyor 7.

The device operates as follows. The flask 5 is mounted on the model plate b and fixed on it. Model 1 of the upper roll neck and rubber elements 2 are placed in the flask 5 (see FIG. 2). The flask 5 is closed by a volumetric lid 4 with holes through which the molding mixture is conveyed by conveyor 7. When the flask 5 is filled with molding sand and part of it will be located in the volumetric cover, air is supplied to the rubber elements 2. Blowing up (see figure 2), rubber elements

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compact the molding mixture in a radial direction. Then the air from the rubber elements 2 bleed. If the compaction is insufficient, then the process is repeated.

The mold making machine is primarily intended for rolling mills where machine molding is not used, because the known molding machines, due to the very high flasks, cannot densely seal the molding mixture. The ramming of the upper neck of the roll is carried out manually by pneumatic ramming.

Using the proposed device completely mechanizes the work of the moulder, allows uniform densification of the molding mixture over the entire height of the flask, which will significantly improve the quality of the casting and allow the molding process to be performed twice as fast.

Claims (1)

SUMMARY OF THE INVENTION A device for the manufacture of molds containing a model plate / flask with a model and hollow sealing elements made of elastic material connected to a source of compressed air, which is noteworthy in order to expand technological capabilities, the sealing elements are mounted uniformly around the circumference of the flask and are made of rubber.