RU1822361C - Aggregate for casting moulds manufacture - Google Patents

Abstract

Usage: in foundry, in particular in equipment for the manufacture of molds by pulsed method. SUMMARY OF THE INVENTION: the pulse head 1 in its lower part is provided with a skirt 11 in the form of a truncated pyramid mounted to interact with the upper flange of the flask 16, and the hopper-doser 2 is equipped with sides 8 with a displacement drive forming in the working one. a truncated pyramid identical to the pyramid of the pulse head 1, with the larger base of the pyramid of the metering hopper 2 smaller than the larger base of the pyramid of the pulse head. 3 ill.

Description

The invention relates to foundry, in particular to pulsed mold manufacturing equipment.

The closest solution in technical essence and the achieved effect is a device for the manufacture of molds (ed. St. K 1013085, class B 22 C 15/22), including a pulse head, hopper-dispenser of molding sand with a drive shutter, model and accessories and a filler frame suspended above the lift table on two pairs of breaking arms.

The disadvantage of this device is exacerbated by the manufacture of molds in flasks of various heights.

The manufacture of molds in flasks of various heights requires, as already mentioned, the presence of filling frames

appropriate height, which requires a whole fleet of filling frames, which complicates the design of the device and its preparation for work. The use of one, obviously the highest, filling frame for molds of different heights leads to large unjustified costs of the molding sand per mold.

The purpose of the proposed invention is to reduce costs in the manufacture of uneven molds.

Fig. 1 shows a mold making apparatus shown in a dosing step of a molding sand; figure 2 - capacity of the hopper-dispenser, providing a slide with tightened inclined faces; in Fig. 3, respectively, the device is in the stage of pulse compaction of the mold.

00

yoo

Gj

The proposed device comprises a pulse head 1, a hopper-dispenser 2 molding sand 3 with a drive,. for example, a slide gate 4 having a power actuator for displacement 5, for example, in the form of 2 hydraulic cylinders and a rack-and-pinion gear synchronizer for operation of paired hydraulic cylinders .6, which ensures a non-convex movement of the gate. A container 7 (Lig. 2) is provided in the lower part of the metering hopper 2, equipped with swinging sides 8, driven by means of the aperture chambers 9 to the working position, in which they form a truncated pyramid.,

Under the exhaust valve 10 of the pulse head 1, a skirt 11 is made, the inclined walls of which form a truncated pyramid identical to the pyramid of the metering hopper 2, while the larger base of the pyramid of the metering hopper 2 is smaller than the large base of the pyramid of the pulse head 1.

The impulse head 1 and the metering box 2 connected in tandem can be moved above the table 12 (which is the working position), for example, by means of a double plunger cylinder 13 On the table 12, which is raised and lowered by the shut-off hydraulic cylinder 1, the model plate 15 and the flask are at rest sixteen.

The device operates as follows.

A model plate 15, paired with an empty flask 16, is fed to a table 12, which is set to its lowest position.

With the shutter gate A closed, dispenser hopper 2 is filled with a molding mixture 3 of at least full dose for one mold.

The tandem, consisting of a metering hopper 2 and an impulse head 1, is moved to the extreme right position using the double plunger hydraulic cylinders 13 (Fig. 1), then the working set (model plate 15 of the flask 16) is lifted to the highest position by table 12. After that, the slide gate using the cylinders 5 and the rack and pinion synchronizer 6 is moved to the extreme left position (Fig. 3), i.e. opens, and molding sand 3 .fill the volumes of the working kit and containers

 given

18223614

I 7. By turning on the x-diaphragm chambers 9, the swinging sides are sealed up from the (-particle molding sand 3, and the slide gate 4, when moving to the extreme right position, cuts off the dosed and condensed volume of the mixture, so called in the container 7

0

5

c is given

0

5

0

5

0

a slide in the shape of a truncated pyramid.

After lowering the table 12 to the lowermost position of the tandem as part of the metering hopper 2 and the pulse head 1 with hydraulic cylinders 13, changing the leftmost position (Fig. 3).

By pressing the hydraulic cylinder 1, the table 12 again rises to its highest position and the slide is introduced into the cavity of the box 11 of the head 1. It is understood that the working receiver is filled with compressed air and when the outlet valve 10 is pulsed open, a pulse mold is formed. Subsequent lowering of the table 12 to its lowest position ends the described one and the next sealing cycle can be started.

Thus, as follows from the description of the operation of the device, the function of the filling frame is carried out by the box 11, into which the loosened mixture is not filled up from above, as is the case in known constructions, but introduced from below in the form of a fully densified body, having the shape of a truncated pyramids, which simplifies the process prior to pulse compaction. This becomes especially noticeable with the multi-position dismemberment of the operation of pulse compaction of molds in lines for large-sized flasks.

The proposed device for the manufacture of molds in comparison with devices of a similar purpose (prototype) allows to produce uneven shapes without a fleet of appropriate filling frames while reducing unproductive costs by saving fresh molding sand.

Claims (1)

The claims Device for the manufacture of molds containing a pulse head, hopper dispenser eleven). fairy / & 2 w m v / v l