SU793696A1 - Pulse head - Google Patents

Description

in the form of sleeves with shoulder clamps placed in the holes of the fixed perforated plate.

The coupling of elastic sleeves with openings of the fixed perforated plate can be both cylindrical and conical.

FIG. 1 shows the proposed impulse head, general view, section; FIG.

2- node I of FIG. 1 (version of the conical sopr lseny); in FIG. 3 - section A-A of FIG. one.

The impulse head comprises a housing 1 with a working cavity 2 and a fixed perforated plate 3 fixed in its lower part, above which is mounted a movable perforated plate 5 with a sleeve 6 fixed on it.

In the holes of the fixed perforated plate 3 elastic sleeves 7 with shoulders A are placed. The coupling of these sleeves 7 with the holes of the non-base perforated plate 3 is carried out using glue or epoxy resin and can be both cylindrical (see Fig. 1), and conical (see Fig. 2).

In a fixed perforated plate

3, the axis 8 is fixed with a faceted section B, mated with a mating hole of the sleeve 6, the hub of which is connected to the piston 4 by the nut 9.

The seal 10 mounted in the movable perforated plate 5, and the seal II placed between this plate 5 and the flange D of the sleeve 6, prevent the ingress of compressed air from the working cavity 2 into the hole of the sleeve 6.

In the upper part of the housing 1, a cover 12 is fixed, against which a spring 13, which interacts with a piston 4, with a seal 14 rests.

The filling of the working cavity 2 with compressed air is carried out through the channel 15 in the housing 1.

To produce a pulse, the iodine of compressed air into the working cavity 2 is stopped, and is fed through channel 16 in housing 1 into sub piston cavity 17, as a result of which piston 4 and movable perforated plate 5 connected to it move to the extreme upper position, opening the air access from the working cavity 2 to the openings of the elastic sleeves 7 and further to the molding sand. With the passage of compressed air through the openings of the elastic bushings 7, noise does not arise, since the elastic properties of the walls of these openings make it possible to smooth out possible microscopic irregularities and soften the flow of compressed air in a noise ratio.

After the pulse, the piston 4 and the movable perforated plate 5 return to their initial position under the influence of the compression spring 13. In this case, the lower part of the movable perforated plate compresses the shoulders A of the elastic sleeves 7, thus blocking their openings. The displacement of the movable perforated plate 5 relative to the {movable perforated plate 3 excludes axis 8 with a faceted section B, which is coupled with the mating hole of sleeve 6.

Pulse head is ready for the next cycle.

Claims (2)

Invention Formula A pulse head for manufacturing and knocking out casting molds, comprising a housing with a working cavity and a fixed perforated plate fixed in its lower part, above which is a movable perforated plate connected to the piston with a sleeve fixed on it, as well as elastic seals of these plates, characterized by what with the purpose of improving performance and reducing noise, it is provided with an axis, one end of which is fixed in a fixed perforated plate, and the second is made with a faceted surface, the sleeve interfaced to the inner surface, the latter being connected to the piston, and the elastic seals are made in the form of sleeves with shoulders placed in the holes of the fixed perforated plate. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 425719, cl. In 22C 15/22, 1972. 2. USSR author's certificate NO 606677, cl. In 22C 15/22, 1977. five Х ХХХХХ Ж FIG. 2 Fig.Z