SU452086A3 - Device for cutting off excess mixture - Google Patents

Description

(54) DEVICE FOR CUTTING THE MIXTURE EXCLUSION

The invention relates to the field of foundry and can be used to cut off the excess mixture from the half-molds located on the turntable of the molding machine. The known devices for cutting excess mixtures containing a rotary frame, on which scrapers are mounted, are not applicable to molding machines having a rotary table, since the cut off excess mixture from one half-form falls on the nearest half-form. The proposed device for cutting off the excess mixture differs from the known one in that its frame is mounted on a vertical shaft parallel to the turntable shaft, with both shafts K1 being shematically interconnected, and the scraper is arcuate and provided with a replaceable rail. FIG. 1 shows the described device and part of the turning table of the molding machine, a section; in fig. 2 is a section along A-A in FIG. 1. The device consists of a scraper 1, which is made duto-shaped and mounted on a pivoting frame 2 connected via a sleeve 3 to a vertical shaft 4 mounted parallel to the shaft 5 of the turntable 6. The scraper 1 has a replaceable rail 7. The shafts 4 and 5 are kinematically connected for example, a set of gears 8 and 9 can be used. On the frame 2, several scrapers 1 can be mounted. On the shaft 4, there are fastening frames 10 that can be raised and lowered. After the mold box 1.1 has been installed on the model tooling 12, they are filled with molding sand 13 and the latter is pressed. The molding mixture 13 after pressing exceeds the upper edge 1 4 of the flask 11 by values a and b. The value b determines the distance between the rail 7 and the upper edge 14 of the flask. The half-form is moved by the rotary table 6 in the direction of the arrow 15. At the same time, the scraper is too long in the direction of the arrow 1c, while

with the mold half, the mold sand is cut off with excess mold 13.

Subject invention

Claims (2)

1. A device for cutting the excess mixture from the half-molds to a molding machine having a vertical shaft with a rotary table comprising a rotary frame on the scrapers are installed, which means: w ee with the fact that, in order to reduce the discharge of the discharged surplus, to the next mold, the frame is set; It is mounted on a vertical shaft parallel to the turntable shaft, with both shafts kinematically connected to each other. 2. The device according to claim 1, distinguishing it from the fact that the scraper is arcuate and provided with an interchangeable rail.