SU931290A1 - Knocking off unit - Google Patents

Description

(5) SELECTION INSTALLATION

The invention relates to foundry and can be used in the production of castings by vacuum film forming.

A device for knocking out casting molds produced by the method of vacuum-film forming is known, in which the removal of films is dried using a suction hood and pressure fan tl.

Closest to the proposed technical essence and the achieved effect is to establish for the knockout of casting molds made by vacuum-film forming. This installation includes an overhead loader with a fork and a divider, and an embossing grid t2.

A common disadvantage of the known knock-out installations is that in the manufacture of large-sized castings, under the influence of the heat of the poured metal, the films located inside the flasks can completely

burn out, while the film residues can adhere to the fret and the flask contlada, as a result, manually removing the film residues is required to ensure the next molding.

The purpose of the invention is to provide reliable separation of the films from the flasks and their removal.

This goal is achieved by the fact that the installation, containing the flask holder with plug, and the flask separator, embossing grille and movable film grippers, is equipped with a carriage in a horizontal plane, and movable film grips are mounted on a carriage that can interact with the edges of the films protruding beyond the outer contour opok.

The drawing shows the embossed installation, general view.

Claims (2)

The installation comprises a base 1 with racks 2 and 3 fixed on it. On which the guide 4 is fixed for moving the reloading device 3-93 5 on it and the carriage 6 moving in a horizontal plane, the embossing grid 7 the utilizer 8, the transport-filling device 9, mounted on the reloader 5 flasks plug 10 and. separator 11 flasks and movable grippers 12, 13, and I placed on the carriage 6. The installation works as follows. The mold is poured in ondpax 15 and 16, installed on the pallet 17, moved by means of the transport-casting device 9. it is installed under the loading device 5 opoks. Lowering to the lower position, the plug 10 and the separator 11 of the flasks capture the flasks 15 and 16 with the help of hollow grippers (not shown) through which the fumes are evacuated. After that, the fork 10 and the separator 11 flasks remove the flasks 15 and 16 from the pallet 17 and install them on the knock out grill 7, and the carriage 6 with the open movable grips 12,, 13 and 14 mounted on it approaches the flasks, the grips 12, 13 and 1 close and clamp the edges of the films 18 protruding beyond the outer contour of the flasks 15 and 16. Then the vacuum is dropped and the molding mixture together with the casting falls on the embossing grid 7, with the upper and lower films being held by the grips 12 and 1, and the middle sandwiched between flasks 15 and 16 and additionally held by grippers 13. After picking The separator 11 flask separates the lower flask 16 from the upper flask 15, and the carriage 6 with the grips 12, 13 and I, in which the edges of the films are clamped, moves along the guide k to the extreme left position, where the grips 12, 13 and} k Divorce TC and the remnants of the films fall into the utilizer. The flask loader 5 moves to the extreme right position, the plug 10 with the separator 11 flasks install the flasks 15 and 16 on the pallet 17, the hollow grippers are divorced, after which the flasks are fed to the next molding. When casting large-sized molds, the films inside the flasks can almost completely burn out, while the remaining edges of the films are melted and can partially stick to the fret and the flask fixture. The edges of the films protruding beyond the outer contour of the flasks always remain cold and retain their original strength, which ensures reliable separation of the films when they are seized outside the outer edges. The present invention eliminates the need to manually clean the frets and the flask control box when preparing the flasks for regular molding. The need to periodically stop the casting line to manually remove film residues from the flasks leads to a decrease in the capacity of the casting line for this reason by 5%. With an annual capacity of 1000 tons of casting and an average cost of 1 tons of casting 100 rubles, the economic efficiency of using the proposed invention will be IOOvlOOO0.05000 rub. The inventive embossing apparatus for casting molds made by vacuum-film forming, including a flask loader with a fork and a flask separator, an embossing grid and movable film grips, characterized in that in order to ensure reliable separation of the films from the flasks and their removal equipped with a carriage moving horizontally, and movable film grips mounted on the carriage with the ability to interact with the edges of the films protruding beyond the outer contour of the flasks. Sources of information taken into account in the examination 1. USSR author's certificate number 632485, cl.: B.22 D 29/00, 1977. 2. USSR author's certificate number 804202, cl. B 22 D 29/00, 1979.