SU897522A1 - Mould for producing articles from concrete mixtures - Google Patents

Description

I

This invention relates to the manufacture of precast concrete and reinforced concrete products.

Known are those containing a pallet with chambers in the steam cavity and a ball {) nirnally attached beads with vertically located and open at the bottom branch pipes installed flush with the upper edge of the bead, and locking and regulating devices, with the flange nozzles connected to the pan chambers with flexible alan

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A disadvantage of the known forms is the complicated structure of the beads, to which the nozzles are attached to the bottom, which necessitates the implementation of special hermetic cavities for the locking and regulating devices in these beads, and, in addition, the need to attach the nozzles to the pallet using flexible vlangs.

Closest to the present invention is a form for the manufacture of products from concrete mixtures, comprising beads, a hingedly connected steam pan with a vapor pan and two branch pipes with lateral and lateral and f 2 J valves connected to the last vertical section.

The disadvantage of these forms is the need to connect the upper and lower parts of the pipe with PSI40TSK flexible inserts, as well as in the presence of both spring-loaded valves at the top and bottom of the pipe, which complicates the design of the pipe and its maintenance.

The purpose of the invention is to simplify the design of the form and ease of maintenance.

The goal is achieved by the fact that in the form for the manufacture of products from concrete mixtures containing the beads, the steam tray and the vertical spigots with shut-off valves connected to them, the beads are made with vertical niches, on the working surface of which vertical spigots are placed with shut-off valves, rigidly connected with a pallet.

FIG. I depicts a mold for the manufacture of products from concrete mixtures, a view to the glider in FIG. 2 — node I in FIG. one; in fig. 3 is a view A of FIG. in FIG. ft - section bb in fig. 3; in fig. 5 is a view B of FIG. 3 in FIG. 6 - a fragment of a package of forms installed on stop-cutters of the heat treatment station, a composite channel, a section.

, The proposed form contains: it podon 1 with consoles 2, pivotally attached beads 3, two vertically arranged nozzles 4 with chambers 5, which are rigidly attached to pallet 1, Nozzles A (one for supplying steam into the form, the second for condensate collection) are located with the inner molding side of one of the longitudinal sides of the mold, so as not to interfere with the excavation of the product from it, and are made in the form of pipe sections provided with upper and lower flanges. On the part of the molding space, if there are no additional inserts in the form, the nozzles 4 are provided with a protective sheet 6. In the assembled form with closed sides 3, the protective sheet 6 is flush with the inner molding side of the longitudinal side, and the upper NIR flange is flush with the Eu: Neugranee side. The chambers 5 are made open at the bottom and are equipped with flanges with elastic Heat-resistant gaskets 7 yo to the perimeter of the holes 8. In addition, the chambers 5 holes 9 are aligned with the steam cavity of the sump 1.a holes 10 are with nozzles 4. The chamber 5 has a lever 11, fixed pivotally on axis 12. Valves 13 and 14 are fixed to lever 11, which, when the lever is rotated, alternately block holes 9 and 10. Axis 12 of lever 11 is led outside chamber 5 and the sector 15 with cutouts 16 is rigidly fixed on the outside and handle 17. Sector 15 hold vaets in one of three stable positions of the spring-loaded roller 18, which abuts against the one of the recesses 16 sector. The sector 15, and, consequently, the lever 11 is rotated by the handle 17. In the horizontal position of the handle 17, the lever 11 by the valve 14 blocks the opening 10 of the nozzle 4. With the local (down) position of the handle 17, the lever II is closed by the valve 13

overlaps an opening 9 connecting the chamber 5 with the steam cavity of the tray 1; When the handle 17 is inclined at an angle of 45, lever II with valves 13 and 14 takes a neutral position,

with which both openings in chamber 5 remain open.

The form works as follows. After the end of the heat treatment and the opening of the steam supply, the molds with the articles are removed from the bag and fed to the formwork post. Disassembly of the package with a reducing agent-unpacker: the lump is made sequentially, starting from the top form. In the forms removed from the package, the levers I1 overlap the apertures 9. This can be done either manually or automatically with a special stop fixed on the descender-unpacker and acting on the handle 17 of the form being removed from the package. After removal of the form: forv 1 and the removal of the product from it, the mold passes through all the posts of the conveyor line, where a new product is molded in it. All of this time, the holes 9 of the steam cavity of the thermal tray remain in the form of blocked valves 13. During the molding of the product, the upper openings of the pipes 4 may be blocked by inventory plugs (not shown) to prevent concrete from entering the pipes. After the product has been molded and the upper surface of the bead is smoothed out, the forms are cleaned of the remnants of the concrete mix, the plugs are removed from the nozzles and the forms are fed to the heat treatment stations, where they are installed by the consoles 2 on the separators 19 posts. When the bag is assembled on its first form, which will be upper in the bag after the end of the assembly, the handles 17 are shifted to a horizontal position, i.e. the holes 10 in the pipes 4 overlap. On all the other forms of the package, the handles 17 are set to the neutral position. In this manner, in the package of forms assembled for heat treatment, two vertical composite channels are formed, connecting the holes 9 and the steam cavity of the thermo-pallets, which are open at the bottom and closed at the top, with the holes 9. The nozzles 20 connected to the vapor and condensate collectors are connected to the holes of these composite channels and steam is started. After the heat treatment of the products is completed, the bag is disassembled and the cycle is repeated. Use of the proposed) | For the manufacture of products from concrete mixtures allows to simplify the invention Form for the manufacture of products from concrete mixtures, containing boards, a hinged tray with a steam cavity and connected to the latter vertical spigots with shut-off valves, characterized in that ease of maintenance, the beads are made with vertical niches, on the working surface of which vertical nozzles with shut-off valves are placed, rigidly connected to the pallet. Sources of information taken into account in the examination 1. The author's certificate of the USSR in application No. 2538775, class B 28 B 7/10, 1977. 2. USSR author's certificate

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Claims (2)

Claim A mold for the manufacture of products from concrete mixtures containing flanges, a pallets $ with a steam cavity articulated with them and vertical nozzles with shut-off valves connected to the latter, characterized in that, in order to ensure ease of maintenance, the flanges to 'are made with vertical niches, on the working surface of which are placed vertical nozzles with shut-off valves, rigidly connected to the pallet. 1 $ Sources of information taken into account during the examination 1. USSR author's certificate on application No. 2538775, class B 28 B 7 / 10.1977. 2. USSR Author's Certificate ”according to the application No. 2671687, cl. B 28 B 7 / 10.1978. View e>