SU1574463A2 - Pneumatic void-forming cores - Google Patents

Abstract

The invention relates to the manufacture of products with voids and provides the possibility of making hollow articles from a cellular concrete mixture. This is achieved by the fact that the puncher is provided with a tip with an elastic gasket 5 that encloses the latter, the shell 1 is connected to its cavity by an annular pneumatic chamber 6 and is made in the form of a glass having an oval cross section. The tip is fixed on the bottom of the glass, and the annular pneumatic chamber 5 encloses 3 parts of the glass fixed on the head. The thickness of the walls of the glass on the small axis is 2 to 5 times the thickness of the walls on the large axis. The tip is made with an annular groove having a dovetail-shaped cross section for accommodating an elastic gasket. 3 hp f-ly, 7 ill.

Description

(L

with

The invention relates to the construction industry and is intended to compact the cellular concrete mixture.

The purpose of the invention is to enable the manufacture of hollow articles from a cellular-concrete mixture.

FIG. 1 shows a hollowing machine, side view; figure 2 is the same, top view; in fig. 3 shows section A-A in FIG. ; figure 4 - section bb in figure 1; Fig, 5 is a section b - E in Fig.1; figure 6 - section GG in figure 5; Fig. 7 shows the front part of the hollow core, longitudinal section.

The pneumatic void-forming agent includes a shell 1 of elastic material in the form of a glass having an oval cross section, and a guide rod 2 placed inside the shell and connected to it with end-fitting 3 at one end and tip 4 with the elastic gasket 5 surrounding it - at the other. The shell 1 is provided with an annular pneumatic chamber 6 connected to its cavity and enclosing the part of the cup fixed on the head 3. The tip 4 of the guide rod 2 is connected to the bottom 7 of the cup, and the front part of the walls of the latter is attached with a sleeve 8. to the guide rod 2. The thickness of the walls of the glass along the small axis is 2-5 times greater than the thickness of the walls along the major axis Head 3 of the guide The stem 2 is provided with a flange 9 having oval holes 10, which allow adjustment of the rotation of the shell 1 in the axial longitudinal direction relative to the tool 11 for displacing the hollowing body. The head 3 of the guide rod 2 is made with spaced j evenly spaced along its circumference.

4 O 00

diagonal channels 12, Shell 1 is provided with a flange 13, with which it is attached to the flange 9 of the head 3 via an intermediate ring 14 and a pressure flange 15. To fill the cavity of the shell 1 with compressed air, there is a pneumatic pipeline 16 with valves 17 and 18, on which Safety valves JQ 19 and pressure reducing valves 20 are placed to maintain a predetermined pressure. Pipeline 16 is connected to cap 21t of which a guide rod 2 is provided.

The device works as follows.

The void former is introduced into the mold with pre-installed reinforcement. In this case, the core former is passed through the beads 22 and 23 of the for- JQ

we, and in the board 23, have a sleeve 24, into which the plant has a tip with an elastic gasket 5. Then the valve 18 is closed and the valve 17 is opened, supplying air to the internal 25 closed shell cavity 1. The air, filling the shell 1, simultaneously passes into the cavity 25 pneumatic chambers 6 through channels 26 and channels 12. After a certain pressure has been created, to which the reducing valve 20 is adjusted, the air supply is stopped. The mold is filled with a cellular concrete mixture to the full volume of the molded product and covered with a lid (not shown) equipped with 35 filters and safety valves. During the swelling of the cellular concrete mixture, the pressure in the closed form increases, which, compressing the casing 1 of the waste core, squeezes through the safety valve 19 a portion of air, thereby reducing the volume of the core generator with Part of the gases until a certain pressure is reached. mixes through cap filters and relief valves. This saves

constant fixed pressure of the cellular-concrete mixture in the form. After the completion of the expansion process and the formation of the sheath 1 at a certain stage, the process of exhausting air through the safety valve 19 stops 30

Q

5 5 0 5

0

0

It is possible to achieve the desired density of the cellular concrete mixture at a certain pressure. In the event of air leaks and a decrease in pressure in the cavity of the shell 1 below the predetermined air, through the pressure reducing valve 20 replenishes these leaks. After purchasing the cellular concrete mixture of the required strength, the valve 17 is closed, shutting off the air supply, the valve 18 is opened, the air is released from the cavity of the shell 1, and the waste-disposal device is removed from the formed product. Remove the cover and the product is fed to the heat treatment.

Claims (4)

1. A pneumatic hollow core containing a sheath of elastic material, inside of which a hollow stem with a head connected to it is located at one of its ends, a pneumatic conduit, characterized in that, in order to ensure the production of hollow products from cellular concrete the mixture, the guide rod is provided with a tip with an elastic gasket covering the latter, the shell is connected to its cavity by an annular pneumocamera and is made in the form of a glass having an oval cross section, the tip is fixed on the bottom of the glass, and the annular pneumatic chamber encloses a part of the glass fixed on the head, and the pneumatic pipeline is equipped with a pressure reducing and safety valves, 2. A pneumatic hollower pop.1, characterized in that the thickness of the walls of the glass on the minor axis is 2-5 times greater than the thickness of the walls on the major axis,. L 3. A pneumatic hollower pop.1, characterized in that the tip is made with a collar groove having a dovetail cross-section for accommodating an elastic pad, 4. A pneumatic pacifier pop.1, characterized in that the rod head is made with a flange having arcuate openings. Z-gpf Gglf ) | W 3-9 2 I V-v Zz Zt UZ LI 91 S , a. v t, l E ) | W at 96II U Ј9VViei Phage. five f i2 t 157446I 25 / f / Phage. 6