RU2244696C1 - Method of manufacture of heat-insulated articles, line for realization of this method and metal mold of line (versions) - Google Patents

Abstract

FIELD: construction engineering; manufacture of building structures.

SUBSTANCE: proposed method includes preparation of polystyrene concrete mix from binder, foamed polystyrene and water, molding articles from this mixture and heat treatment. Prior to preparation of mixture, foamed polystyrene is subjected to foaming performed at two stages as minimum. At two stages as minimum. At first stage, polystyrene gravel at density of 12-30 kg/cu m is obtained. At subsequent stages its density is brought to 6-11 kg/cu m; polystyrene gravel may be obtained by grinding wastes of articles made from polystyrene to grain composition of fractions to 1-15 mm. Introduced additionally into mixture is air-entrapping additive hardening accelerator and water-reducing additive which are thinned with water. Articles are molded by placing the mixture in metal molds. Mixture is fed to each cell of metal mold by means of hose by forcing it from pneumatic concrete mixer by compressed air. After heat treatment, metal molds containing articles are delivered to demolding station where are subjected to vibration treatment for separation of articles from molds. Then, articles are removed from metal molds. Line proposed for realization of this method includes foaming unit, service bins and proportioners for foamed polystyrene, binder and water, at least one pneumatic concrete mixer for preparation of polystyrene mixture and molding and demolding stations. Proportioners for aqueous solution of hardening accelerator, air-entrapping additive and water-reducing additive, service reservoirs for air-entrapping additive, hardening accelerator and water-reducing additive, screw feeder for delivery of binder to proportioner, vibration table, metal molds with covers, pipe lines with shut-off cocks and swivel chutes, control console and hose. Proportioner is located under service bin forming single reservoir which may be divided by mechanical splitter. Pneumatic concrete mixer is provided with horizontal shaft at volume of 0.6 to 2 cu m. Metal mold is provided with sump having hinged sides, partitions, cargo-gripping mechanism and cover located on sump of cassette. Each cassette is made in form of platform formed by horizontal square sheet and four vertical sheets rigidly secured on horizontal sheet, shifted relative to center axes and interconnected in T-shaped pattern perpendicularly relative to each other forming four cells over perimeter of platform and central cell. Cells over perimeter of platform have three free faces. Cargo-gripping mechanism is located in central cell partitions are mounted between cassettes and are pinched by two vertical sheets. Cover is made in form of metal sheet pressed to upper faces of cells, partitions and sides. According to second version, metal mold has sump and at least one cell heat-insulated articles. Each cell is formed by bottom of sump and two z-shaped profiles clamped together and provided with changeable inserts placed between z-shaped profile. Each z-shaped profile has two side and one central webs. Side surfaces of all webs are perpendicular to plane formed by sump bottom. Changeable inserts are secured on side webs of z-shaped profiles. Each z-shaped profile forms one of subsequent cells by its one cell.

EFFECT: extended technological capabilities; increased productivity; improved quality and enhanced reliability.

11 cl

Description

The invention relates to construction and can be used in the manufacture of building structures.

The method of manufacturing heat-insulating products chosen by the applicant as the closest analogue (prototype) is already known, including the preparation of a polystyrene-concrete mixture from a binder, polystyrene foam and water, molding from a mixture of heat-insulating products and heat treatment of the latter (see patent RU 2080311, publ. 27.05.1997).

The disadvantage of this method is the relative complexity, energy intensity and complexity.

The objective of the invention is directed to the development of a method that provides, with comparative simplicity, the expansion of technological capabilities, increasing productivity, quality and reliability in the production of thermal insulation products.

The task in terms of the method is achieved due to the fact that in the known method of manufacturing heat-insulating products, including the preparation of a polystyrene concrete mixture from a binder, polystyrene foam and water, molding from a mixture of heat-insulating products and heat treatment of the latter, according to the claimed invention, foams the polystyrene foam at least in two stages, moreover, at the first stage polystyrene gravel with a density of 12-30 kg / m ^{3 is} obtained, and at subsequent stages its density is increased to 6-11 kg / m ³ , or Lister gravel is obtained by grinding waste products from expanded polystyrene to a grain composition with a fraction of 1 to 15 mm, an air-entraining additive diluted with water, a hardening accelerator and a water-reducing additive are additionally introduced into the polystyrene-concrete mixture, the insulation products are molded by laying the polystyrene-concrete mixture directly into the metal molds in each cell of the metal mold by extrusion from a pneumatic mixer with compressed air, then heat treatment is performed, according to After heat treatment, the metal molds with the products are fed to the demolition post, where they are subjected to vibration processing to disconnect adhering products from the surface of the metalforms, after which the products are removed from the metalforms.

As a binder, Portland cement or slag Portland cement or a composite low clinker binder can be used.

After laying the polystyrene-concrete mixture in the metal molds, the latter can be vibrated on a vibrating table to remove trapped air.

Heat treatment of heat-insulating products can be carried out by placing shaped thermally-insulating products in metal molds in heat chambers, which supply warm air with a temperature of less than 70 ° C and holding the products at this temperature.

The line for the manufacture of heat-insulating products, selected by the applicant as the closest analogue (prototype), containing a foaming unit, consumables and dispensers for polystyrene foam, binder and water, at least one pneumatic concrete mixer for the production of polystyrene concrete mix and molding and demounting posts is already known (see patent RU 2080311, publ. 05.27.1997).

The disadvantage of the line is complexity, metal consumption and low manufacturability.

The objective of the invention is directed to the development of a line that provides, with the comparative simplicity of equipment, the expansion of technological capabilities, increasing productivity, quality and reliability in the production of heat-insulating products.

In part of the invention of the line for the manufacture of heat-insulating products, the objective of the claimed invention is achieved due to the fact that the known line for the manufacture of heat-insulating products, containing a foaming unit, consumables and dispensers for polystyrene foam, binder and water, at least one pneumatic concrete mixer for the manufacture of polystyrene concrete mixture and posts forming and formwork, according to the claimed invention is additionally equipped with dispensers of an aqueous solution of a hardening accelerator, air th additive and water-reducing additives, consumable containers for air-entraining additives, hardening accelerator and water-reducing additives, a screw for feeding the binder into the batcher of the latter, a vibrating table, metalforms with covers, pipelines with shut-off valves and rotary chutes, a control panel and a hose, and the foam polystyrene batcher is located under feed hopper with the formation of a single tank and with the possibility of separation of the latter by a mechanical shut-off device, a concrete mixer for manufacturing polystyrene concrete the mixture was made with a horizontal shaft with a volume of 0.6 to 2 m ³ .

The foam polystyrene dispenser can be equipped with a movable side wall and is configured to adjust its volume by moving the side wall.

Each of the heat chambers can be made in the form of a closed volume with a top or side cover.

Each of the heat chambers can be configured to be equipped with steam registers or the ability to supply hot air.

The metal mold selected by the applicant as the closest analogue (prototype) is already known, comprising a pallet with folding sides, partitions, a gripping mechanism and a cover (see patent RU 2087307, publ. 08.20.1997).

A disadvantage of the known metal molds is the complexity of manufacturing, assembly and disassembly, low accuracy of the resulting products.

The objective of the invention is directed to the development of metal forms, which provides, with comparative simplicity, the expansion of technological capabilities, easy disassembly of the structure, increasing productivity, quality, reliability and rigidity of the structure.

In terms of the claimed metal mold, the objective of the claimed invention is solved by the fact that the known metal mold containing a pallet with folding sides, partitions, a gripping mechanism and a cover according to the claimed invention is provided with cassettes placed on the pallet, each of which is made in the form of a platform formed by a horizontal square sheet shape, and four vertical sheets rigidly mounted on a horizontal sheet, offset relative to the central axes and interconnected T-shaped per each other with the formation of four cells along the perimeter of the site and the central cell, the cells along the perimeter of the site having three free faces, the load gripping mechanism is located in the central cell, the partitions are installed between the cassettes and pinched by the cassette platforms with two vertical sheets, the cover is made of a metal sheet pressed to the upper faces of the cells, sides and partitions.

The cover sheet may be made in the form of two folding halves.

Known selected by the applicant for the second embodiment as the closest analogue (prototype), the metal mold containing the pallet, vertical sides (see patent RU 2087307, publ. 08/20/1997).

A disadvantage of the known metal molds is the complexity of manufacturing, low accuracy of obtaining products.

The objective of the invention is directed to the development of metal forms, which provides, with comparative simplicity, the expansion of technological capabilities, increased productivity, quality, reliability, as well as the expansion of the receipt of standard sizes of products.

In the second embodiment of the claimed invention, the objective of the claimed invention is solved due to the fact that in the known metal mold containing a pallet, the vertical sides, according to the claimed invention, the vertical sides are made in the form of z-shaped profiles, tightened together by screws and interchangeable inserts placed between adjacent z-shaped profiles and mounted on shelves of the latter.

Production example.

The manufacture of thermal insulation products consists of the following steps:

1. The manufacture of components;

2. Dosing of components and preparation of polystyrene concrete mixture;

3. Formation of polystyrene concrete products;

4. Heat treatment of products;

5. Formwork and product packaging.

Component manufacturing.

The composition of the mixture includes polystyrene foam, cement (or another binder), an air-entraining additive, water. To accelerate the hardening, another component was used - the well-known concrete hardening accelerator, approved by the material developer for use.

For the manufacture of polystyrene concrete mixtures, the following components are preliminarily prepared.

Binder - it can be either ready-made Portland cement or other binders that are made by grinding in mills of various types. (The type of mills and grinding modes depend on the raw materials available to the local manufacturer and are selected according to experimental data in the developer's laboratory.) After manufacturing, the binder is fed to a temporary storage warehouse, which is also a feed hopper (Portland cement is pumped by pneumatic conveyor or skip lift directly from the storage warehouse or from a cement truck, bypassing the manufacturing stage).

Polystyrene can either be foamed in any foaming units in 2 stages from polystyrene granules of the PSVS-U brand of any manufacturer, or can be made from polystyrene foam board waste.

Before preparing the mixture, the polystyrene is foamed in at least two stages.

At the 1st stage of manufacturing, polystyrene gravel with a density of 12-30 kg / m ^{3 is} obtained, and after passing the drying chamber through pneumatic conveying, it is sent to the storage hopper, where it is held to equalize external and internal pressure for 6-12 hours.

And at subsequent stages, its density is brought to a maximum value of 6-11 kg / m ³ and after passing through the drying chamber, it is sent to the storage hopper for re-aging (min 8 hours). Expanded polystyrene is loaded into the feed hopper either mechanically, by pouring from bags, or by pneumatic transport.

Expanded polystyrene gravel from waste is obtained by grinding polystyrene boards and their waste products from expanded polystyrene to a grain composition with a fraction of 1 to 15 mm.

An air-entraining additive and a hardening accelerator are diluted to the required water consistency in technology in special containers with heated water and air bubbler for mixing (item 9). The same containers are consumable and are installed above the dispensers (pos. 13), or are installed in other rooms, when dosing manually. When manually dosing, the component is supplied before the start of the change to the post of molding in conventional containers

Special water treatment is not required.

The composition of the polystyrene concrete mixture includes polystyrene foam, cement (or other, for example, a low-clinker composite binder), an air-entraining additive, a hardening accelerator, a water-reducing additive, and water.

The low-clinker composite binder contains Portland cement (20-30%), blast furnace granulated slag (70-80%) and S-3 superplasticizer (2-3% by weight of cement).

As an air-entraining additive, saponified wood resin SDO-L is used (0.06-0.3% in terms of dry matter by weight of cement). As a water-reducing additive, “Lignopan B-1” is used (0.15-0.3% in terms of dry matter by weight of cement).

As a hardening accelerator, “Lignopan B-2” is used (0.6-1% in terms of dry matter based on the mass of cement).

2. Dosing of components and preparation of polystyrene concrete mixture.

For dispensing, standard volume and weight type dispensers are used, combined into a common metering unit.

Expanded polystyrene is dosed by a volumetric dispenser. The polystyrene foam dispenser is located directly under the feed hopper and is separated from it by a mechanical shut-off device. After its opening, a single container forms, which the component quickly fills, falling down under its own weight. After filling the dispenser with polystyrene foam, which is visually controlled through the inspection window, the formed single tank is divided by the cutter into 2 volumes, the lower of which is dosed. The volume of the dispenser is regulated by moving its side wall.

The binder is dosed by a weighing batcher, into which it enters through the screw. The auger is controlled automatically by the set weight or the operator from the remote control by control devices. The end of dosing occurs by turning off the auger.

Water is dosed by the dispenser, either by weight with load cells or by a predetermined volume with a float sensor. Dosing of water can be done visually by the operator using a measuring ruler. Water enters the dispenser by gravity through a shut-off electric crane from a water supply hopper, in which heaters are installed for heating water in the winter. Water can enter the dispenser immediately from the network, bypassing the feed hopper.

The aqueous solution of the hardening accelerator is dosed similarly to water or manually by measuring containers.

The air-entraining additive is dosed by a piston-type volumetric dosing device or manually by measuring tanks. (Manual batching is now organized).

Under the batchers there are pneumatic concrete mixers (from 1 and more) installed in such a way that they allow loading into each mixer any component from one batcher. For this, pipelines with stopcocks (for liquid components) and rotary chutes (for dry components) are used.

The components are loaded by the operator in the sequence specified by the technical regulations from the control panel located near the concrete mixers.

For the production of polystyrene concrete mixes, horizontal concrete mixers are used with a rotation frequency of 50-60 rpm, volumes from 0.6 to 2 m ³ . Mixing is carried out from 2 to 10 minutes.

According to technical regulations, until the mixture is ready, visually determined, or by control weighing of the measured volume of the mixture.

3. Forming products

The products are molded by laying the polystyrene concrete mixture in metal molds (item 2), consisting of cells corresponding to the geometric dimensions of the products.

Laying is carried out through a hose ⌀ 80-150 mm, directly into each cell of the mold by extruding from a pneumatic concrete mixer with compressed air. After laying the mixture in the metal mold, the mixture is vibrated for 3-5 seconds on a vibrating table with a frequency of 3000 ± 200 vibrations per minute and an amplitude of 0.3-0.5 mm to remove trapped air.

The vibrating platform is installed either at the concrete mixer, while the mixture is laid directly on the vibrating table, or in another place, while the metal mold is supplied from the casting station to the vibrating table by a crane. After vibrating, the excess mixture is removed from the metal mold by cutting with a rail and the metal mold is covered with a lid. The cover is a thin sheet of metal 5-8 mm, cut in half and folded when raised when it is like a book. It lies freely on the mold and has rubber pads on top. They allow you to redistribute the load from the load, which is installed on the lid in such a way that the lower part of the lid fits snugly over the entire density of the metal mold, ensuring high precision products.

4. Heat treatment of products.

Molded products in metal molds are placed in heat chambers in bundles on top of each other so that the upper form serves as a load for the lower one. A load weighing 2-5 tons is installed on the topmost metal mold. Thermal chambers are a closed volume of various designs with a top or side cover (When loading a bundle, the metalloform rolls into the chamber on a trolley. The thermal chamber circulates warm air with a temperature of less than 70 ° C and exposes the products at this temperature for 6-12 hours ( depending on the brand of products being made.) The air is heated either by steam registers or by a gas heat source of circulation type. The temperature in the chamber is controlled by automatic equipment. tsya series and designed for this amount to ensure complete filling, and their inclusion is not later than 2-3 hours after pouring the 1st shape that provides a continuous production process and product quality.

Metal form dismantling and product packaging.

After heat treatment, metal molds with products are fed to the demolition post.

The lid is removed from the metal mold by a crane, then it is cleaned by weight with scrapers and lubricated by a pneumatic sprayer with grease. After that, the lid is installed vertically in the rack when folded. After filling the rack (designed for 4-6 covers), it is transported by a crane to the molding zone. The metal molds are opened and then, the individual parts of the cassette metal molds or the entire mold are mounted on the vibration table, where they are subjected to vibration processing to detach adhering products from the surface of the metal molds and are fed to the formwork table, where the products are removed from the metal molds and placed manually on pallets or binding sites. With large volumes of production, this process is automated. Products placed on pallets are packed with stretch tape or tied with PP tape. Long products are knitted several pieces into briquettes with PP tape.

Packaged products are delivered by crane to the temporary storage warehouse in the workshop, or transported to the finished goods warehouse using a trolley or forklift. Products are sold both from the finished goods warehouse and from the temporary storage warehouse in the workshop.

The released metal molds are cleaned with scrapers, then collected and lubricated at the formwork site. After that, metalloforms are served at a molding post or temporary storage warehouse. Lubrication is carried out by pneumatic spray guns in an open way or using a portable manual cap restricting the spraying of grease into the air.

Figure 1 shows a diagram of a line for the manufacture of insulating products.

Figure 2 shows the first version of the metal mold is a side view.

Figure 3 shows the first embodiment of the metal mold - top view.

Figure 4 shows the cassette of the metal mold according to the first embodiment - top view.

In Fig.5. depicted metal mold cassette according to the first embodiment - side view.

Figure 6 shows a second variant of the metal mold.

Figure 7 shows a variant of a metal mold with interchangeable inserts.

The line for the manufacture of heat-insulating products contains a foaming unit, consumables 1, 2, 3 and dispensers 4, 5, 6 for expanded polystyrene, binder and water, pneumatic concrete mixers 7 for the manufacture of polystyrene concrete mix and molding and demolition posts. The line is also equipped with dispensers 8, 9, 10 of an aqueous solution of a hardening accelerator, an air-entraining additive and a water-reducing additive, consumable containers 11, 12, 13 of an air-entraining additive, a hardening accelerator and a water-reducing additive, a screw 14 for feeding the binder into the dispenser 5, a vibrating table, and metalforms with covers (not shown), pipelines with shut-off valves and rotary chutes, control panel and hose (not shown). The foam polystyrene dispenser 4 is located under the feed hopper 1 with the formation of a single tank and with the possibility of separation of the latter by a mechanical shut-off (not shown). Pneumatic concrete mixer 7 for the manufacture of polystyrene concrete mix is made with a horizontal shaft with a volume of 0.6-2 m ³ . The foam polystyrene dispenser 4 can be provided with a movable side wall and is configured to adjust its volume by moving the side wall. The line can be equipped with heat chambers, each of which can be made in the form of a closed volume with a top or side cover. Also, each of the heat chambers can be configured to be equipped with steam registers or the ability to supply hot air.

The line works as follows.

A polystyrene concrete mixture is prepared from a binder, expanded polystyrene and water. They make molding from a mixture of heat-insulating products and heat treat the latter. Before preparing the mixture, the polystyrene is foamed in at least two stages. At the first stage, polystyrene gravel with a density of 12-30 kg / m ^{3 is} obtained, and at subsequent stages its density is brought to 6-11 kg / m ³ . An air-entraining additive, a hardening accelerator and a water-reducing additive are additionally introduced into the polystyrene-concrete mixture. Thermal insulation products are molded by laying polystyrene-concrete mix in metal molds. Laying is carried out through a hose directly into each cell of the metal mold by extruding from the pneumatic concrete mixer 7 with compressed air, then heat treatment is performed. After heat treatment, the metal molds with the products are fed to the demolition post, where they are subjected to vibration processing to disconnect the adhered products from the surface of the metalforms, after which the products are removed from the metalforms. Polystyrene gravel can be obtained by grinding waste products from expanded polystyrene to a grain composition with a fraction of 1 to 15 mm. As a binder, Portland cement or slag Portland cement or a composite binder can be used. After laying the polystyrene-concrete mixture in the metal molds, the latter is vibrated on a vibrating table to remove trapped air. Heat treatment of products can be carried out by placing shaped thermally insulating products in metal molds in heat chambers, where warm air with a temperature of less than 70 ° C is supplied, and holding the products at this temperature.

The metal mold according to the first embodiment comprises a pallet 15 with hinged sides 16, partitions 17, a load gripping mechanism 18 and a cover 19 placed on the pallet 15 of the cartridge. Each of the cassettes is made in the form of a platform formed by a horizontal sheet 20 of square shape and four vertical sheets 21, rigidly fixed to the horizontal sheet 20, offset relative to the central axes and interconnected T-shaped perpendicular to each other with the formation of four cells around the perimeter of the site and the central cell, and the cells along the perimeter of the site have three free faces, the load gripping device 22 is placed in the central cell 23, the partitions 17 are installed between the cassettes and pinched pads cassettes two vertical plates 21, the lid 19 is formed as a metal sheet pressed against the upper faces of the cells, the beads 16 and partition 17. Cover sheet 19 may be made of two foldable halves.

The assembly of metal is as follows.

The cassettes are installed in the pallet 15. Between the cassettes, partitions 17 are installed, which are pinched by the cassette pads and their two vertical sheets 21. After closing the sides 16 of the pallet 15, a rigid easily disassembled structure is formed. On top of the form is covered with a lid 19 in the form of a sufficiently flexible sheet. The mold cover 19 is pressed against the mold. The clearances are selected by the gasket between the cover and the pressing element. The cover 19 can be attached to the bottom of the pallet 15 of the same metal mold in such a way that when the metal molds are installed on top of each other, the bottom of the pallet 15 of the upper metal mold serves as a cover 19 for the lower metal mold.

According to the second variant (Fig.6), the metal mold contains a pallet 24, at least one cell 25 for heat-insulating products. Each of the cells 25 is formed by the bottom of the pallet 24 and two z-shaped profiles 26, pulled together, and each of the z-shaped profiles 26 is made with two side 27 and a Central shelf 21 and placed between the z-shaped profiles 19. Side surfaces of all shelves 27 and 28 are perpendicular to the plane formed by the bottom of the pallet 24, each of the z-shaped profiles 26 of one cell 25 forms two faces of one of the following cells 25. Each of the cells 25 (Fig.7) can be equipped with two removable inserts 29 located between z-shaped profiles 26 cells 25 and fixed on the side shelves of the last 27.

The originality of the assembly of the metal mold according to the second embodiment consists in the fact that the vertical sides are assembled from z-shaped profiles 26, i.e. a predetermined number of cells 25 can be dialed, and by using interchangeable inserts 29 between profiles 26, predetermined product sizes can be achieved.

Claims (11)

1. A method of manufacturing heat-insulating products, including the manufacture of a polystyrene concrete mixture from a binder, polystyrene foam and water, molding from a mixture of heat-insulating products and heat treatment of the latter, characterized in that before manufacturing the mixture, the polystyrene foam is foamed in at least two stages, and at the first stage polystyrene gravel is obtained density 12 ÷ 30 kg / m ^3, and in subsequent phases the density was adjusted to 6 ÷ 11 kg / m ³ polystyrene or gravel prepared by grinding the waste products from expanded polystyrene to zer of a new composition with a fraction of 1-15 mm, an air-entraining additive diluted with water is additionally introduced into the polystyrene concrete mixture, a hardening accelerator and a water-reducing additive, the insulation products are molded by laying the polystyrene concrete mixture in metal molds, laying is carried out through a hose directly into each metal mold cell by extrusion from the compressors air, then heat treatment is carried out, after heat treatment the metal molds with the products are fed to the demolition post, where They are subjected to vibration processing to disconnect adhering products from the surface of the metal mold, after which the product is removed from the metal mold. 2. The method according to claim 1, characterized in that Portland cement or a composite low-clinker binder is used as a binder. 3. The method according to claim 1 or 2, characterized in that after laying the polystyrene concrete mixture in the metal molds, the latter is vibrated on a vibrating table to remove trapped air. 4. The method according to claim 1 or 2, characterized in that the heat treatment of the products is carried out by placing the molded heat-insulating products in metal molds in heat chambers, which serves warm air with a temperature of less than 70 ° C and holding the products at this temperature. 5. A line for the manufacture of heat-insulating products, containing a foaming unit, consumables and dispensers for polystyrene foam, binder and water, at least one pneumatic concrete mixer for the production of polystyrene concrete mixture and molding and demounting stations, characterized in that it is additionally equipped with dispensers for an aqueous solution of the hardening accelerator , air-entraining additives and water-reducing additives, consumables for air-entraining additives, hardening accelerator and water-reducing additives, screw for feeding the binder into the batcher of the latter, with a vibrating table, metalforms with covers, pipelines with shut-off valves and rotary chutes, a control panel and a hose, the foam polystyrene dispenser is located under the feed hopper with the formation of a single tank and with the possibility of separation of the latter by a mechanical shut-off, a concrete mixer for manufacturing a polystyrene concrete mixture is made with a horizontal shaft with a volume of 0.6 to 2 m ³ . 6. The line according to claim 5, characterized in that the foam polystyrene dispenser is equipped with a movable side wall and is configured to adjust its volume by moving the side wall. 7. The line according to claim 5 or 6, characterized in that the line is equipped with heat chambers, each of which is made in the form of a closed volume with a top or side cover. 8. The line according to claim 5 or 6, characterized in that each of the heat chambers is configured to be equipped with steam registers or the ability to supply hot air. 9. A metal mold containing a pallet with hinged sides, partitions, a gripping mechanism and a cover, characterized in that it is equipped with cassettes placed on the pallet, each of which is made in the form of a platform formed by a horizontal sheet of square shape, and four vertical sheets, rigidly fixed to a horizontal a sheet offset from the central axes and interconnected T-shaped perpendicular to each other with the formation of four cells around the perimeter of the site and the central cell, moreover, the cell about the perimeter of pad have three free faces lifting mechanism is placed in the central cell, partitions are mounted between the cassettes and cassettes sites are clamped by two vertical sheets, the cover is made of a metal sheet pressed against the upper faces of the cell walls and beads. 10. The metal mold according to claim 9, characterized in that the cover sheet is made in the form of two folding halves. 11. A metal mold containing a pallet, at least one cell for heat-insulating products, characterized in that each cell is formed by the bottom of the pallet and two z-shaped profiles, pulled together, with interchangeable inserts located between the z-shaped profiles, each of the z-shaped profiles is made with two side and central shelves, the lateral surfaces of all the shelves are perpendicular to the plane formed by the bottom of the pallet, removable inserts are mounted on the side shelves of the z-shaped profiles, each of the z-shaped profiles one cell forms one of the following cells.

Images