RU194270U1 - Core box - Google Patents

Abstract

The utility model relates to the field of foundry. The core box contains a housing, a base plate, an ejector plate (3) with pushers fixed on it (4). The pusher (4) is attached to the ejector plate using the latch (5) with a fastening element (6). The diameter of the upper part (10) of the pusher in contact with the housing and the rod is equal to the diameter of the lower part (12) of the pusher in contact with the ejector plate. The diameter of the middle part (11) of the pusher in contact with the latch is less than the diameter of the upper part of the pusher. The pusher can be removed through the forming cavity of the core box and through the landing hole of the ejector plate. EFFECT: simplified construction of the pusher mechanism and extraction of a worn pusher. 2 s.p. f-ly, 3 ill.

Description

The proposed utility model relates to the field of foundry, in particular, is used for the manufacture of cores.

The technical problem is aimed at simplifying the design of the pusher mechanism, reducing labor costs and time for removing a worn (faulty) pusher, reducing labor costs and time for installing (replacing) a new pusher in the pusher mechanism of the core box.

The technical result consists in the fact that the proposed device prevents jamming of a worn (faulty) pusher when it is removed, both through the forming cavity of the lower part of the core box and through the plate of pushers.

Device known according to the certificate of authorship No. 417222 "BARBOX", including the lower and upper halves. A plate is rigidly fixed at the lower ends of the guide pins, planks are installed at the free upper ends, which can rotate about the axis of the pins. Pushers are mounted on the plate. In the upper half there are inflatable holes, and on the surface of the connector of the lower half there are stepped cavities located on opposite sides of the forming cavity. After the core box is opened, the cured core is held in the bottom half with the help of slats that make up the technological signs. When moving upwards, the pushers and guide pins with slats simultaneously move upwards, as a result of which the rod is pushed out of the forming cavity. Then the strips are rotated around the guide pins, and the rod is freely removed from the core box.

The disadvantage of this device is that the pushers of the core box have mechanical wear of rubbing (contacting) surfaces and there is no possibility of quick replacement of worn (faulty) pushers. To replace the pushers, the device design involves the dismantling of the entire plate with pushers to replace worn (faulty) pushers rigidly mounted on it, and the pushers cannot be removed separately without removing the plate. The pushers cannot be removed through the mold cavity of the lower part of the core box and cannot be removed through the pusher plate.

Device known according to the author’s certificate No. 407626 “ROD BOX”, including a fixed part with a plate of pushers, a moving part with a plate of pushers and a detachable part, which is mounted on the pusher. At the end of the curing process, the rod with the help of pushers is pulled out from the fixed part, then the moving part is horizontally moved until the core box is fully opened. The plate of the pushers and the detachable part, which is mounted on the pusher, pulls the rod, and then manually or using the mechanism to remove the finished rod.

The disadvantage of this device is that the pushers of the core box have mechanical wear of rubbing (contacting) surfaces and there is no possibility of quick replacement of worn (faulty) pushers. To replace the pushers, the design of the device involves the dismantling of two pusher plates (or four pusher plates) with pushers to replace worn (faulty) pushers mounted on it (on them), and the pushers cannot be removed separately without removing the plate. The pushers cannot be removed through the mold cavity of the lower part of the core box and cannot be removed through the pusher plate.

The closest in technical essence is the device according to copyright certificate No. 417222, IPC B22C 7/06, publ. 11/28/1974, bull. No. 8, adopted by the authors for the prototype. When implementing this method, the task is achieved - eliminating the stuck cured rod in the upper half, which allows you to expand the range of complex rods made by sandblasting and cured in a box.

Proposed device includes the core box body, the fixed part - the base plate, pos. 9, the movable part is an ejector plate, with pushers fixed on it by means of clamps and fasteners. At the end of the curing of the rods, they are removed from the core box using a push mechanism, both through the forming cavity of the core box and through the mounting holes of the ejector plate.

One embodiment of the device is shown in FIG. one.

In FIG. 1 shows a core box with a combined connector, the housing of which consists of two side parts, pos. 2, which are moved apart, and the lower fixed part of the core box, pos. 1. In this particular embodiment of the utility model of FIG. 1 rods are held in the lower stationary part of the core box due to the holding pins, pos. 8. At the end of the curing of the rods, for example, in the chamber of an automatic rod machine, the core box enters the working area to remove the rods from the forming cavities of the lower stationary part of the core box. The rods are removed using push rods, pos. 7, driving the ejector plate, pos. 3, with a push mechanism fixed to it. The pusher mechanism consists of one ejector plate with pushers fixed to it, pos. 4, using clamps, pos. 5, and fasteners, pos. 6. The diameter of the upper part of the pusher, pos. 10 in contact with the core box is equal to the diameter of the lower part of the pusher, pos. 12 in contact with the ejector plate, and the diameter of the middle part of the pusher, pos. 11, in contact with the latch, less than the diameter of the upper part of the pusher and, accordingly, less than the diameter of the lower part of the pusher.

The shape of the retainer does not affect the achievement of the technical result, nor does the type of fastener affect its achievement. The number of pushers also does not affect the achievement of a technical result.

When replacing the pusher after mechanical wear (malfunction), it will be enough to release it from the latch by dismantling the fastener, then remove it, as through the forming cavity of the lower part of the core box, pos. 13, and through the landing holes, pos. 14, the ejector plate.

The technical result is achieved due to the fact that in the proposed device the pusher of the upper part of the pusher in contact with the core box is equal to the diameter of the lower part of the pusher in contact with the ejector plate, and the diameter of the middle part of the pusher in contact with the latch is smaller than the diameter of the upper part of the pusher, the pusher is attached to the ejector plate with the help of a latch with a fastening element, with the possibility of extracting the pusher, both through the forming cavity of the core box and through the landing hole the stripper plate. The invention is illustrated by the figures:

 figure 1, which shows in section a fragment of an assembly drawing of a core box with a pusher mechanism;

 figure 2, which shows in section a fragment of the assembly drawing of a core box with a pusher mechanism after pushing the rods from the forming cavity in the lower part;

 figure 3, which shows a fragment of a drawing of a fixed pusher to the ejector plate.

The specified device is used in foundries of the JSC Scientific and Production Corporation Uralvagonzavod JSC in the manufacture of cores and has confirmed its technical and economic efficiency.

Information sources:

1. Copyright certificate No. 417222 "ROD BOX", publ. 11/28/1974;

2. Copyright certificate No. 407626 "ROD BOX", publ. 12/10/1973.

Claims (3)

1. A core box comprising a housing, a base plate, an ejector plate with pushers fixed on it, characterized in that the pusher is attached to the ejector plate with a latch by a fastener with the possibility of removing the pusher through the mold cavity of the core box and through the mounting hole of the ejector plate, the diameter of the upper part of the pusher in contact with the housing and the rod is equal to the diameter of the lower part of the pusher in contact with the ejector plate, and the diameter of the middle part of the pusher STUDIO contacting the retainer is less than the diameter of the top of the pusher. 2. The core box under item 1, characterized in that it is made with the possibility of extracting the pusher through the forming cavity of the lower part of the core box. 3. The core box according to claim 1, characterized in that the housing of the core box is made of parts with a combined connector.

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