SU472190A1 - Installation for molding concrete products - Google Patents

Description

one

The invention relates to the field of manufacture of articles from rigid and dry concrete sms.

Known installation, incl. Form, nyHivCp-podlachnk, vakuulEKOnnak, shtalsh n raspalubnips. However, the operation of such facilities requires the presence of a fleet of forms, which complicates the automation of the production process.

The aim of the invention is to improve the quality and speed of the hardened products, excluding the possibility of creating the conditions for automating the automation of packing, compaction and expansion processes.

This is achieved by stacking a bunker, a form with a nozzle, a punch, a vacuum column and a bottoming box mounted in a single unit with pressurized corius, the lower part of which forms the beams of the form, and the middle part is connected to the drain channels, the cover is closed. a shutter, the installation is provided with a hermetically closed hatch at the top, at the bottom with a sealing gasket, on the sides - with guides for vertical movement and inside with a perforated double wall. The bypass valve is made in the form of two ilarNrio connected diaphragms for changing the angle of inclination and position relative to

2

Cornus iodine action, 1 reciprocating stroke stamp. The perforated double wall is made in the form of a set of vertical plates, between which are placed shmstunayuschie stacks of ribs of the stamp.

D. t providing the possibility of electric heating of the concrete mixture of the inner wall plate is separated from the case by electrically insulating gasket, which is ribbed on the inner side, whose ribs are made of metal and irregular plates.

In order to ensure the supply of water through all the gaps between the plates, the casing of the device is equipped with a channel connected to the gaps through the cavities between the fins in the electrical insulating plate and the holes in it and in the casing. In addition, the corus for lifting is equipped with additional hydraulic cylinders and a conveyor belt is located between the body of the installation and the vibrating platform, to facilitate movement of which the vibrating platform is equipped with fittings for supplying compressed air under the ribbon.

Figs, 1 and 2 show the installation in section; pas figs. 3 is a section along A-A in FIG. 2

The installation consists of a housing 1 with a manhole 2, a hermetically sealed cover, a die of the housing 3 driven by hydraulic cylinders 4 and

the ribs l of stiffness 5, the bypass gate 6, the sealing layer 7, the inner wall of metal plates 8 separated from the case I by an electrical insulating gasket 9 n forming slots 10, which through the cavities 1 and the orifice 12 at the root 1 and gasket 9 communicate with the channel 13, equipped with ptpuper 14; niramidal colep 15 with brackets 16, cannot be retracted but guiding rods 17, grippers 18 with diffusers from electromagnets 19 for attaching body 1 to vibrating plate 20, grips 21 with electromagnets 22 for fixing body 1 in upper end position, systems of levers 23 for drive the hatch cover 2, the hopper 24 with the shutter 25 n the shutter drive 26, the auxiliary hydraulic cylinders 27, the fitting 28 for pumping air from the transporter 29 and the fittings 30 to supply compressed air under the tape 29. The installation works as follows.

Claims (9)

I. Molding products from dry concrete mixes with a combination of vibration vacuum and power load. In the upper part of the corns 1, divided by the bypass valve 6, through the hatch 2, a dry concrete mixture is poured, which is withdrawn from one storehouse. The housing 1 is installed on the tape 29, which falls on the vibro table 20 and rolls by the grippers 18. The hatch cover 2 is closed into the vacuum of the wheel through the nozzle 28, a vacuum of at least 700 mm Hg is created. em. The punch 3 with the help of the hydraulic cylinders 4 is lifted to the upper extreme position, where it feeds the gate 6. At the same time, the concrete mixture under its own weight moves under the punch 3, freeing itself from the air contained in it. Then, the vibrating deck 20 is switched on and the oil supply to the hydraulic cylinders 4 is switched. At this time, the stamp 3 is lowered onto the concrete mix, and it is compacted by the shocks of vibration, vacuum and punch pressure. Upon completion of compaction, the vibronic table 20 is turned off and through the nozzle 14, channel 13, hole 12, cavities 11 and slots 10 inside the vacuum-bell serves hot water in an amount sufficient to completely cover the surface of the product and a layer of at least 2 cm. through the fitting 28 serves atmospheric or compressed air with a pressure of 0.5-1 atmosphere. At the same time, water is driven into the packed dry concrete mix. After 20-60 seconds from the moment air is supplied through fitting 14, excess water is drained, voltage is applied to plates 8, and the freshly compacted mixture is heated to 90-95 ° C. Temporarily relieve oil pressure in hydrocylpands 4, turn on electromagnets 19 and remove grippers 18 from engagement. Again, pressure is applied to the hydraulic cylinders 4, and they, through die 3, on the newly formed product 31, lift the installation body 1 upward, and the formed product remains on the belt 29. When the body moves upward through the system of levers 23 and the actuator of the shutter 26, the lid of the hatch 2 and the shutter 25 of the bunker 24 open, from which the concrete mix is delivered into the installation case, where it is located on the shutter 6. In the upper extreme position, the inlet body engages with the grippers 21, after which, by switching the oil supply to the hydraulic valves 4, the punch 3 is raised, and the molded product 31 is removed by the movement of the tape 29. At the same time, in order to reduce the iodine's movement in opposition to the iodine, the tape 29 is supplied with compressed air through the fittings 30 to the vibrating valve. As soon as the product 31 is brought out of the iodine of the plant casing and no later than 1 st, 3 reaches the gate 6, the electromagnets 22 are turned on, the grippers 21 come out of the ground and the corus 1 is placed on the belt 29 and the vibronic plate 20, where the grippers 18 automatically lock. Again, a vacuum is created inside the housing through the fitting 28, the die 3 lifts the shutter 6, the concrete mixture moves under H1 tamn 3, and the molding cycle of the next product proceeds in the drawn sequence. P. Molding hard mixes combination of vibration, vacuum power of the stamp. The molding of products differs from the molding of products according to option I only by the absence of the operations of feeding and draining water from a vacuum-bell. Iii. Forming hard mixtures a combination of vibration and force of the stamp. The molding of the articles differs from the molding of the articles but in the variant II by the absence of the operation of pumping the air from the vacuum bell, opening and closing the hatch 2. Plant and unit for molding products from concrete mixtures, including mold, bunker, vakukolpak, shtinn and demolisher, characterized in that, in order to improve the quality and speed of hardening of products, exclude the park forms and creation of conditions for the full automation of packing processes, packing and spreading, the stacker bunker, the nozzle mold, the punch, the vacuum packer and the demolver are mounted in a single unit with a hermetic case, the lower part of which forms the sides of the mold, the upper part is the stacker bunker, with the middle portion vsholnena peretsusknymi channels closable by-pass gate, wherein the installation is provided with a top germeticheskp closeable hatch vpizu - germetiziruyush .ey gasket on each side - guides for vertical movement inside and - perforated double wall. 2. Installation on n. 1, characterized in that, in order to improve the operation of the bypass shutter, the latter is made up of two artificially connected diaphragms for varying the angle of inclination and positioning it relative to the root of the strain of the strain. 3. Installation according to claim 1, characterized in that, in order to ensure self-cleaning of the perforation of the inner wall, the latter is made in the form of a set of vertical ilastins, between which protruding ends of the ribs of the punch are placed. 4. Installation according to claim 3, characterized in that, in order to enable electric heating of the concrete mixture, the inner wall plates are separated from the case by electrically insulating P1: with it and laying. 5. Installation but clause 4, characterized in that, with the aim of improving the conditions for cleaning the gaps, the electron-insulating layer is made in the outer side of the ridge. nlastnny, the width of the ribs which mend the ishrins of metal plates. 6. Installation under item 3, characterized in that, in order to ensure the supply of water all the gaps between nlastinamn. its body along the perimeter is equipped with a channel, which is connected with gaps by means of cavities between the rib in the electron beam and the base plate and the holes in the core and the body. 7. Installation according to Claim 1, I distinguish between the SSH and the fact that, in order to reduce the pressure on the freshly molded product, work on moderately hard concrete 1P51X mixtures without using vacuum, the housing is equipped for lifting it donoliptelny hydrocylnndra. 8. Uetanovka on n. 1, characterized in that. that, in order to facilitate trasporting of the molded product, between the body of the installation and the vibroplan is located conveyor belt. 9. The installation according to claim. 8, 11, 11 a so that, with the aim of facilitating the transport of the tape, the vibrating plate is equipped with automatic tamping devices for compressed air. t ..... , J -: -A;: M.:, I st 1A ;;;; -:: d1A; fg ///////////////// Figure 1 feiAii i b -23 t / / / 2. Aa Fig.Z