Cinder block: can we make it ourselves? Making homemade machines for the production of cinder blocks How to make a cinder block machine

The building materials market presents different kinds concrete blocks, including slag concrete. They are distinguished by their low weight and increased dimensions, which makes it possible to build a building at an accelerated pace. Wanting to reduce the estimated cost of work, many developers do not purchase block building materials, but make them themselves using a machine for producing blocks. Industrial models of vibrating machines are not always distinguished by their quality and performance. It is easy to make a homemade unit, guided by the recommendations given.

Cinder blocks

Types of concrete blocks for construction

Despite the fact that brick is often used in the construction industry for the construction of buildings, it is difficult for it to compete with block building materials made from concrete. To build a house, it’s easy to choose blocks that differ:

increased dimensions;
reduced weight;
filler used;
production technology.

The manufacturing technology of block products involves the use of the following filler:

expanded clay;
sawdust;
slags;
brick fighting;
dropouts.

Expanded clay blocks

Wall materials block type are divided into the following types:

expanded clay concrete blocks;
wood concrete products;
foam concrete building materials;
aerated concrete products;
cinder blocks.

The use of cinder blocks, the cost of which is lower than other block building materials, reduces the cost of building construction. Making cinder blocks on your own is easy to do at home, using a machine for producing blocks. Let's consider the characteristics of cinder block building materials.

Cinder concrete blocks - properties of building materials

Cinder concrete blocks are a building material produced using vibration pressing technology. Along with cement and sand, the following types of filler are used for production:

slags, which are waste from metallurgical enterprises;
granite and crushed stone screenings;
brick waste;
river crushed stone;
expanded clay particles.

Brick waste is one of the components for cinder blocks

The production of cinder block products can be carried out in various ways:

using industrial technology, which involves heat treatment and steaming;
at home using a homemade block machine.

By producing cinder blocks on a block making machine, you can obtain products that have the following advantages:

elevated thermal insulation characteristics. Slag concrete has low thermal conductivity and retains heat well;
increased dimensions. They allow you to quickly build a cinder concrete building, outbuilding or garage with your own hands;
resistance to microorganisms and damage by rodents. This is ensured by the filler used and the structure of the cinder block mass;
reduced cost. A homemade cinder block is cheaper than, for example, a foam block used for construction purchased in a retail chain.

In addition, slag concrete material is fireproof, easy to process and dampens external noise.

Along with its advantages, slag concrete has a number of disadvantages:

limited service life. The durability of a slag concrete structure does not exceed two and a half decades;
reduced strength properties. Only one-story and two-story buildings are erected from cinder concrete;
cracks when sheared. During the shrinkage of the box, cracks do not occur along the seams, but directly along the blocks.

Cinder concrete has low thermal conductivity and retains heat well

Cinder concrete also has an unpresentable appearance, needs to exterior decoration. In addition, cinder concrete cannot be used for foundation construction.

Despite weak sides material, it is preferred in situations where it is necessary to quickly construct a small building or outbuilding at minimal cost.

Which is the best block machine to use?

Developers who decide to independently produce cinder blocks for the construction of walls are faced with the question of choosing equipment. It is not always possible to rent a machine for the production of building blocks, especially in small towns. Many people decide to make the equipment themselves. Depending on your financial capabilities, you can choose the following options:

simplest design that allows you to make it at home wall blocks at minimal cost;
a modernized version of the unit, equipped with a compaction device and additional mechanisms.

It is difficult to give a definite answer as to which block production machine is preferable to use. It all depends on the number of blocks that need to be produced and financing possibilities. Let us dwell on the features of each unit.

Simplified block machine

To make cinder blocks on your own in a reduced quantity, it is not necessary to make a mechanized unit, use a vibrator, or additional mechanisms. The manufacturing process using simplified technology can be carried out in special forms.

Simplified block machine

Procedure:

Assemble the molds and coat them inner surface used oil.
Pour cinder block mixture into collapsible molds.
Leave for 3-4 hours until the solution hardens.
Disassemble the containers and carefully remove the blocks.
Allow to dry indoors.

If it is necessary to produce hollow products, it is advisable to use ordinary drink bottles to form cavities. A simplified machine for the production of blocks, which is a container of the required size made of wood or steel, can be manufactured at a minimum amount of cost.

Modernized machine for the production of building blocks

With an increased need for cinder blocks for the construction of a large building, you can make a more complex machine for producing blocks, equipped with special devices:

vibration mechanism. An electric motor is used as a vibration motor, with an eccentric located on the drive shaft. The drive power depends on the size of the mold, the mass of the slag concrete mortar and is 0.5–1.5 kW. Under the influence of vibration, the slag concrete mass is compacted, the material is evenly distributed throughout the entire space of the mold, and air inclusions are removed. As a result of compaction, the specific gravity and strength of cinder block products;
lifting device. It is designed for faster extraction finished products from molding containers. There are many design solutions to speed up and facilitate the removal of blocks. In the most simple version It is enough to weld handles of any shape to the molding container, by pulling which you can remove the hardened block. Using ready-made drawings, you can independently assemble a lever mechanism from scrap materials.

Modernized machine for the production of building blocks

The shape used in this unit must correspond to the size of the cinder block that is planned to be made. In most cases, products are manufactured of standard dimensions - 0.4x0.2x0.2 m. The molding container must have a height increased by 4m5 cm so that the molded block after compaction has the required dimensions. To simulate cavities, pipe scraps of the required diameter can be welded to the bottom of the container.

We make a machine for blocks with our own hands - sequence of actions

To perform work on assembling the vibration compactor, it is necessary to prepare. Will be required following materials and tools:

steel sheets 2.5–3 mm thick;
metal pipe with an outer diameter of 7.5 m 8.5 cm;
electric motor with a power of up to one kilowatt;
apparatus for electric welding with electrodes;
grinder complete with cutting wheel for metal;
locksmith tool.

Before production begins, you should prepare drawings and understand the design of the machine for producing blocks. It is necessary to decide on the dimensions of the blocks that will be made - the size of the mold depends on this. It can be welded to fit standard products or made in larger sizes.

Drawing of a cinder block machine

When everything is prepared, we make a machine for the production of block products, observing the sequence of operations:

Cut rectangular blanks from a steel sheet for welding a molding container of the required size.
Tack them with electric welding and assemble the side edging of the molding box for pouring the cinder block mixture.
Check that the tack is correct, and if the diagonal length is equal, finally weld the mold elements.
Cut tubular blanks the length of which is equal to the height of the mold and make diametrically spaced cuts on the side surface.
Provide a conical shape for the tubular elements and weld them to the bottom sheet of the future molding box.
Weld the crossbar to the cones, install plugs on the ends with a smaller size.
Produce final assembly molding box, welding the bottom with inserts to the edging.
Attach two handles on opposite sides to lift and transport the molding container.
Install the threaded elements for fastening the vibration motor and screw the vibration motor with the balancing weight.
Cut out top cover, corresponding to the dimensions of the internal cavity of the box and having holes for pipes.
Apply anti-corrosion coating, assemble the unit and check its operation.

The use of a group container of increased size allows to increase the productivity of the vibropressing machine.

Drawing. Vibroforming machine

Self-production of slag concrete blocks - recipe

Do-it-yourself cinder block making machine

To make cinder blocks using self-made equipment, you need to prepare the following materials:

Portland cement marked M400 and higher;
screenings or small crushed stone;
slag or ash from coal combustion;
sifted sand;
water.

Special plasticizers are also used to increase the strength of the cinder block mass and accelerate hardening. To prepare an increased volume of slag concrete mixture you will need a concrete mixer.

The following slag concrete compositions are used:

mix Portland cement with slag in a ratio of 1.5:8. Gradually dilute the mixture with water, the amount of which should not exceed half the volume of cement;
mix crushed stone screenings, cement and coal ash in a ratio of 4:1:4. Add water to the concrete mixer until the solution becomes plastic.

Possible formulations include the use of granulated slag, plasticizers, quartz sand and broken bricks.

Portland cement marked M400

We manufacture products ourselves using a block production machine

Using a self-made machine for blocks, carry out work according to the following algorithm:

Place the equipment on level ground.
Connect electrical power.
Prepare cinder block mortar.
Pour the prepared mixture into the mold.
Turn on the vibration motor for 2-3 minutes.
Add cinder mixture to the top level.
Place the protective cover and turn on the vibrator.

Compact the array. The cover should come into contact with the stops located in accordance with the height of the block. Then remove the box and let the molded block sit until the mass sets. After careful removal, dry the cinder concrete products in a closed and ventilated area.

Let's sum it up

When planning the construction of a building made of cinder concrete, you can reduce costs by independently making a machine for producing blocks. It is important to use verified documentation for the manufacture of the unit and carefully understand the design of the vibration compaction device. To obtain high-quality products, study the recipe and also understand the technology.

Today you will learn:

✓ How to make a cinder block machine.
✓ Recipes for the composition of the mixture.
✓ Step-by-step operations for making a cinder block machine.
✓ Drawings of a cinder block machine.
✓ Video about the cinder block machine.

Cinder blocks are building blocks (wall stones) that are obtained by vibrating a concrete solution into a mold. The composition of concrete when making a cinder block should be as follows: slag, coal combustion waste, ash (other ingredients). But during manufacturing, the composition of the cinder block can include all available substances in your region - this includes screening out crushed stone (stone, granite), expanded clay, brick waste, sand, gravel, sawdust (after processing), perlite and a lot of other things that make construction material cheap and attractive for the developer.

Before you start making a cinder block machine, you need to decide what kind of machine you need. That is, just to make a shed or temporary shed - a machine with one or two cinder block molds is enough. Well, if you plan to manufacture building blocks as a small business, then you will have to make a more productive machine with three or more dies for blocks.

Once you have decided, at this point you should understand that the most important part in the machine is the form itself (matrix). All other components and parts are all additions to filling this form, compacting it, raising it, moving it, etc. I would like to add that there are many mechanisms for compacting concrete mixtures, including pneumatic and hydraulic presses.

But we will focus on the simplest seal - an electric motor with offset centers, which will create vibration. The engine that will be attached to the form can be taken from the old one washing machine. But there is a small problem with this electric motor - it is open and during operation the solution will constantly get inside. If you are not too lazy to clean it, you can leave it. But it is more reliable and effective sharpening machine made in China. All that remains is to weld a bolt with nuts perpendicular to the shaft or screw on a metal washer with an offset center. It is advisable to cover this whole thing with covers.

There are many different drawings of devices for making cinder blocks on the Internet, but they are all mostly paid. Having reviewed many forums and photos of ready-made machines, we can draw one conclusion: it’s all hype and pumping out money. Everything is possible and to suit your needs, that is, it’s better than what they offer for a lot of money.

We will start from the final result, that is, the block itself. We know its dimensions are 190x190x390. So we will make a mold for blocks of these sizes. A sheet of metal from 3 mm to 5 mm is taken and cut to the size of the workpiece. Since our cinder block will be hollow, it is also necessary to make void formers. The simplest thing is to take pipes of the required diameter (see figure). Please note in the drawing that the top and bottom are different in size, that is, they are conical. This is necessary for better release of the form from finished block. The taper can be ordered from a turner so that a few millimeters can be removed from one side. Rectangular void formers do the same thing, but with the same taper, depending on who you like. But you need to keep in mind that there should be 30% void in the cinder block, no more.

I would also like to pay attention to the seams when making molds. They must be done with tacks over a short distance so that the metal does not move. The seams are made from the outside leaving straight corners on the inside.

The height of the form should be 5cm higher in order to be able to pour the concrete mixture and press it with a pressure plate. Also at the bottom of the form it is necessary to make rubber around the perimeter, wooden seal, so as not to deform the edges of the matrix. As an option, weld 2-centimeter plates of the same metal around the perimeter as the mold itself.

After making the mold, we proceed to the frame of the cinder block machine. Wheels are attached to the base for convenient movement of the machine itself after the block has been released from the mold. The material for the construction is taken from what you have: pipe, corrugated pipe.

We adjust the length of the stands taking into account the fact that in the raised position, the form should move away calmly without touching the block.

Let's estimate: Block 20 + 3cm gap + 22cm form +5cm side + another 3-5 cm for the top pipe. It's already 50cm from the floor. Please note that the back of the trough prevented the mold from rising all the way; it was necessary to bend the lever upward. We suggest making the racks a little longer; you’ll always have time to cut them off, if necessary.

The main parts, mechanisms are levers based on the principle simple mechanisms- large shoulder, small. Everything is done to suit you, based on your height, etc. After installing the handle, we remove the toggle switch to turn the vibration motor on/off. During production, you yourself will understand how to do it so quickly and with minimal costs strength to make a lot of cinder blocks.

REMEMBER, to make blocks we recommend doing this; First, mix everything dry, then add water. The mixture is checked in this way: we take the mixture in our hand, squeeze it, it should not fall apart and hold the shape of the imprint, this is a proven method for years. The mixture should be semi-dry.

Mixture recipes for making cinder blocks You cannot download files from our server

Step-by-step production of a cinder block machine

The range of building materials today cannot but please with its diversity, however, many people prefer to make such products with their own hands. Thus, it is quite possible to make cinder blocks, which are in great demand, yourself using a special homemade machine. Today we will look in detail at how to do this correctly.

Features of the material

Cinder block is a building material that has proven itself to be one of the most durable and unpretentious. It has considerable dimensions, especially if you place an ordinary brick next to it. You can make slag blocks not only in a factory setting. Some craftsmen undertake this work at home. If you strictly adhere to the technology, you get high-quality and strong blocks from which you can build a house or any outbuilding.

If a decision has been made to independently produce such products, then a number of its features should be taken into account.

Cinder block is a fireproof material. It does not ignite itself, and does not intensify an existing flame.
Really good quality blocks make long-lasting and sustainable homes/outbuildings. Such buildings will not be harmed by harsh climatic conditions, hurricanes, or constant gusty winds.
Repairing cinder block buildings does not require extra effort and free time - all work can be completed in a short time.
Cinder blocks are also distinguished by their large sizes, thanks to which buildings made from them can be erected very quickly, which pleases many builders.
This material is durable. Buildings built from it can stand for more than 100 years without losing their previous characteristics.
Another feature of cinder block is its soundproofing component. So, in dwellings made of of this material, no annoying street noises.

Cinder block buildings are usually finished decorative materials to give a more aesthetic appearance. However, it is very important to remember that the cinder block cannot be covered ordinary plaster(any “wet” work with this material should not be carried out). You can also use a special decorative block, which is often used instead of expensive cladding.
When working with cinder block, it is important to take into account one important feature– this material is characterized by high water absorption, so it must be protected from contact with moisture and dampness. Otherwise, the blocks may collapse over time.
Unfortunately, the geometry of the slag blocks leaves much to be desired. That is why, when laying floors from such material, you will have to constantly adjust individual elements- trim and saw them.
Cinder blocks have a relatively low cost.

According to experts, such materials are quite capricious in their work, so it is always very important to follow the appropriate instructions. The same applies to the process of their manufacture.

Mixture composition

The production of slag blocks at home obliges the master to adhere to a specific composition, as well as certain proportions of all components. Thus, the binding ingredient in this material is usually cement of a grade not lower than M400. As for the filling component, it can consist entirely of slag or be mixed. The last option is obtained by adding a small amount of crushed stone, sand (simple or expanded clay), crushed brick and fine expanded clay.

When making cinder blocks, the following proportions must be observed:

8-9 parts of the filling component;
1.5-2 parts of astringent ingredient.

If cement marked M500 was used during the work, then it is permissible to take 15% less of it than M400 raw materials. Most often, an element such as slag occupies at least 65% of the total volume of the filler.

For example, out of 9 parts, at least 6 are accounted for by this component, and the rest is made up of crushed stone and sand. In theory, when making it yourself, it is permissible to use concrete or brick scraps, screenings.

The standard proportions of cinder block are:

2 parts sand;
2 parts crushed stone;
7 parts slag;
2 parts of Portland cement marked M400.

As for water, it is customary to add it in an approximate ratio of 0.5 parts. The result is a semi-dry solution. To ensure its high quality, you need to take a small handful and throw it on a hard surface. If the thrown lump crumbled, but under compression conditions regained its previous shape, then the composition can be considered suitable for further use.

If you plan to obtain colored cinder blocks, then the recipe is supplemented with colored chalk or brick chips. To increase the strength characteristics of this material, special plasticizers are used. In some cases, they resort to adding gypsum, ash or sawdust.

It is recommended to mix all of the listed components in a special mixer or concrete mixer, however, such equipment usually has a high price. If we are talking about preparing a small amount of the mixture, then it is possible to knead it manually, despite the fact that such a process is considered quite labor-intensive.

Forming methods

Factory molds for preparing cinder blocks are made of reinforced concrete or steel. Such parts can easily withstand the weight of a large volume of solution. As for do-it-yourself molds, they are most often made of wood or steel sheets. Such elements largely play the role of special formwork.

To save on raw materials and free time, molds are mainly assembled without a bottom. You can put them under plain film. Thanks to this method, the entire process of block formation can be significantly simplified. It must be remembered that the forms themselves must be made of perfectly smooth wood parts. Working surface in this case, a concrete base, a table with a flat and smooth tabletop, or a sheet of iron, which also does not have any defects, will protrude.

To create voids, many craftsmen use glass bottles. You should not take plastic containers, as they can be seriously dented. The bottles are filled with water. Otherwise, they will float to the surface of the prepared composition.

Let's take a closer look at how to make a mold for slag blocks:

you need to choose sanded boards 14 cm long (the width should be a multiple of this parameter);
then, using a hacksaw, you need to separate the segments, which will then play the role of transverse partitions;
then you will need to connect the segments with longitudinal elements to form a rectangular frame;
Next you need to cut a sheet of steel or any other material with smooth surface on separate plates measuring 14x30 cm;
in the inner part of the resulting structure, cuts are made that will act as grooves, the width of which is equal to the dimensions of the dividing strips;
then the sections responsible for the separation are fixed in cuts, creating a mold for the production of 3 or more slag blocks.

In order for the resulting container for hardening the solution to serve as long as possible, at the final stage it is recommended to paint both metal and wood structures oil based. This form is suitable for preparing cinder blocks, the dimensions of which are 14x14x30 cm.

If it becomes necessary to manufacture elements with other dimensional parameters, then the original values are changed to other sizes.

How to make a vibrating machine?

You can make slag blocks at home using a special vibrating machine, which you can also make yourself. The main component of such a device is the vibroform for the solution itself. Such a machine is a steel box in which parts with voids (or without them) are fixed. The matrix itself is already a machine. It is allowed to be used by performing some steps manually.

To make a vibrating machine yourself, you need to purchase:

welding machine;
grinder;
vice;
tools for carrying out metalwork.

As for materials, you will need:

steel sheet 3 mm - 1 sq. m;
pipes with a diameter of 75-90 mm - 1 m;
3 mm steel strip – 0.3 m;
electric motor with a power of 500-750 W;
nuts and bolts.

Let's consider the procedure for carrying out work on the manufacture of a homemade vibrating machine.

Measure a standard slag block or record the specific parameters you need.
Cut out the side parts of the machine from a sheet of metal. Based on the number of cinder blocks, provide the required number of partitions. As a result, a box is formed with 2 (or more) identical compartments.
The bottom wall with a thickness of at least 30 mm must have voids. Based this parameter, we determine the height of the cylinder limiting the voids.
We cut 6 separate pieces of pipe with a length corresponding to the height of the cylinder.

In order for the cylinders to acquire a cone-shaped structure, it is permissible to cut them lengthwise to the middle part, compress them using a vice, and then connect them by welding. In this case, the diameter of the elements will decrease by approximately 2-3 mm.
The cylinders need to be welded on both sides.
Next, these parts should be connected to each other in the form of one row, following the long side of the future cinder block. They must repeat the location of the voids on the factory element. At the edges it is necessary to attach a 30 mm plate with holes for fastening to the eyes.
A cut should be made in the center of each matrix compartment and an eye should be welded. This is necessary to ensure the installation of temporary fasteners for void limiters.
On the outer transverse wall, 4 bolts are welded under the motor mounting holes.

Next, the apron and blades are welded along the edges in the places where loading is carried out.
After this, you can proceed to preparing all elements for painting.
You can make a press that follows the shape of the mechanism using a plate with holes whose diameter is 3-5 mm larger than the cylinders themselves. The plate should easily fit to a depth of 50-70 mm into the box where the restrictive parts are located.
Handles need to be welded to the press.
Now you can paint the equipment and fix the vibration motor.

Production technology

There are two ways in which slag blocks are made.

The easy way. In this case, special containers are used, in which the prepared solution acquires the required strength. The blocks dry naturally until the cement is completely set.
The hard way. With this manufacturing method, vibration devices are used. In many cases, they turn to elements such as a vibrating table or complement the form with a motor with a vibration function.

Let's get acquainted with the technology of making slag blocks using simple forms.

All prepared ingredients in the required proportions are placed in a concrete mixer, after which they are thoroughly mixed.
The prepared solution is poured into molds. As for tamping, it is carried out using a hammer - they tap the containers with it so that all the air is removed from the material.
If the blocks are planned to be made with voids, then bottles of water are placed in each individual part (usually 2 bottles are enough).

The main difficulty with this manufacturing method is the compaction of blocks. If air bubbles remain inside the solution, this will have an adverse effect on the quality of the final product.

As for the more complex method of producing cinder blocks, the following work is carried out here:

The manufacture of materials in this way should begin by stirring the mixture in a concrete mixer;
the resulting solution is sent to the mold and then leveled with a trowel;
then the vibrator is started, and the solution itself is kept in the mold for 20-60 seconds;
then the equipment must be turned off, the installation is lifted, and then the finished unit is removed.

When producing slag blocks using this technology, special attention should be paid to leveling the solution in corner areas. They must be completed. Otherwise, the geometry of the finished product may be seriously damaged.

Drying

Drying is another important stage production of slag blocks. The production process itself usually takes about 2-4 days. Sufficient strength characteristics that allow you to proceed to the use of blocks are usually achieved after 28 days. This is exactly the amount of time needed to obtain high-quality building material suitable for carrying out certain works. Cinder blocks can also dry naturally. As a rule, this process takes place when simple method production of materials (in conventional forms).

They are often used to dry cinder blocks. special cameras, which prevent cracking during their hardening. To prevent the blocks from becoming cracked, they must be moistened from time to time. This process is especially relevant if the production process is carried out in hot weather.

It is worth noting that the hardening process of cinder blocks can be significantly accelerated. This effect can be achieved by adding special substances - plasticizers - to the solution. With such additives, the material will not only dry faster, but will also be stronger. Cinder blocks with plasticizers can be removed from the site and stored after 6-8 hours.

To front side cinder blocks turned out to be more neat and intact; these materials should be placed on a flat rubber base for drying.
Never stack blocks on top of each other while they are drying. Otherwise, the materials may turn out to be deformed, and their geometry will cause many problems during construction work.
In all cases, drawings of the molds and the slag blocks themselves should first be made. In this way, many difficulties associated with construction processes will be avoided.
When preparing the solution, be sure to adhere to the required proportions. The slightest errors can lead to the blocks being too fragile and unsuitable for construction.

Before pouring the prepared solution, the molds should be wiped. This will prevent the cinder blocks from sticking to the bottom and walls. For cleaning, diesel fuel, used oil or other similar compounds are most often used.
Please note that the rate of hardening of the solution directly depends on its thickness. The thicker the composition, the sooner the blocks will harden.
It is recommended to cover the slag blocks with polyethylene during the drying period. The film will be able to protect the material from cracks in hot weather, and will also protect the cinder blocks from getting wet if it suddenly rains.

Thanks to the use of cinder blocks, good thermal and sound insulation of the premises is ensured. The advantage of this material is that its use significantly reduces the cost of wall construction. The production of blocks requires special equipment. For this, homemade machines for cinder blocks can be used.

Slag blocks as a building material and their application

The material is one of the varieties of building materials that looks like stone. It is based on a filler (slag), and a cement solution acts as a binding element. Cinder blocks are used for construction small houses. The material has good thermal insulation and also insulates sound.

There are two main options for making cinder blocks: industrially and at home.

The construction block includes the following components:

sand;
granite screenings;
slag;
expanded clay;
cement;
crushed stone;
brick stone;
crushed stone.

To create blocks with your own hands, special small-sized machines are used. In addition to the machine, equipment for the production of cinder blocks at home includes:

construction trolley;
concrete mixer;
sieve;
shovel.

Construction of a cinder block apparatus

Any homemade cinder block machine consists of: a matrix template and a vibrator.

To make the matrix you will need drawings and the following materials:

a strip of steel, the length of which is 29 cm and the thickness of about 3 mm;
metal sheet 3 mm thick and 1 m 2 in size;
nuts and bolts as fasteners;
meter steel pipe with a diameter of 8 cm;
electric motor with a power of 0.74 kW.

In addition to this you will need welding machine, vice, grinder and metalworking tools.

The procedure for making a homemade block machine

A machine for making cinder blocks is designed according to the following instructions:

using a grinder, matrix walls are cut out;
blanks are cut from the pipe in the amount of 3 pieces per brick so that their height is 4 mm less than the height of the matrix;
giving the pipes a taper, in which they are cut to the middle and compressed in a vice;
the pipe section is welded on both sides by welding;
plates are welded to the pipes;
bolts are fixed on the outer wall with which the electric motor will be attached;
a metal apron is welded in the upper part;
manufacturing a press in the form of a plate with thick walls, so that it extends onto the matrix by 45-50 mm;
welding the handle to the press;
installation of an electric motor;
cleaning the device.

Features of manufacturing a mold for a machine and its vibration mechanism

The main element of any homemade manufacturing machine building block is its form. It serves as a template for all cinder blocks that will be made on the machine. Special attention should be given to its size. The best option the mold size is 40*20*20, which coincides with the standard dimensions of the construction block.

The form should be based on sheet material about 3 mm thick. Any seams that appear during welding are recommended to be done from the outside. Because of them, the size of the produced cinder blocks may subsequently change.

Any shape should imply the presence of inserts in the form of cylinders. Due to this, voids will appear inside them, as required by the technology. It is enough to use three cylinders with a diameter of 8 cm. Homemade machine for making blocks may include cylinders made from scrap metal pipes.

To avoid concrete mortar sticking to the walls of the block mold, it is necessary to lubricate it and the pipe sections used with oil each time.

Good quality of the product depends on the presence of a vibration mechanism in the machine for the production of building blocks. It should be designed at the stage of creating the diagram of the future machine.

The benefit of the mechanism is that thanks to it, air will be actively released from the concrete mixture, and it will be evenly distributed throughout the form. This will make it possible to produce blocks with a denser structure.

The function of the vibration mechanism is performed by an electric motor. To do this, take a bar with a displaced center of gravity and attach it to the shaft. The mechanism is adjusted manually, since with strong vibration splashing will occur, and with low vibration the blocks will have poor quality.

As a mechanism, you can use a regular electric motor from a washing machine. A sufficient power indicator will be 145-150 W.

To protect the product from shocks, you will need to apply a silicone or rubber layer to it.

The process of making cinder blocks

To make cinder blocks with your own hands, you will need a concrete mixer. A homemade solution can be made taking into account certain proportions.

It is necessary that there is exactly 2 times less water in the solution than cement. The manufacturing process includes the following steps:

the solution is mixed in a concrete mixer;
using a shovel, the solution is distributed inside the mold;
the solution is distributed evenly throughout the mold to its very edges and carefully compacted with a shovel from above;
the block with the solution is moved into the air and kept for about 45 minutes until it hardens;
the resulting cinder block is carefully removed along the edges, sides, top and bottom;
The finished building block is left for a day to completely harden.

To make products of higher quality, you will need a machine for making blocks with a vibration mechanism. To do this you will need:

knead the solution;
fill the mold with the solution in the form of a slide;
turn on the device for a couple of seconds, and then compact and level the mixture with your hands so that the cylinders inside the mold are visible;
after leveling, the mechanism turns on for 8 seconds;
by raising and lowering the lid, the mixture is compacted (at least 4 times);
Remove the mold and dry the resulting blocks for a week and a half.

The building blocks will finally become solid after a month. Must be observed temperature regime with high humidity and air temperature. To quickly harden the blocks, you can add a plasticizer to the solution for making them.

Making cinder blocks at home is a profitable business idea. By receiving free drawings, a description of the technology from us and with a little effort, you will receive quality equipment, guaranteeing regular income!

High-quality cinder block is a building material that is in demand always and everywhere. Due to the large weight and convenient size, it allows you to make masonry of structures of any complexity and height (from an ordinary extension to a house to industrial workshops).

Equipment for the production of cinder blocks at home

The presence of a vibrating machine will make the cinder block more dense and of higher quality, avoiding the formation of unnecessary voids. The vibrating machine will significantly increase the quantity of manufactured products. Now you don't have to wait for the concrete blocks to set completely before moving on to another batch.

Do-it-yourself vibration machine for the production of cinder blocks

The best option at home is a machine with 4 sections at once. In order to make such a machine, which allows you to produce about 100 cinder blocks per hour, you need to first download a 3D model of the machine:

After taking measurements, cut out the parts for the future shape from sheet metal about 2 millimeters thick.
Then the sheets are welded together in such a way as to obtain a shape without a bottom. The height of the mold is 50 millimeters higher than the height of a standard cinder block. This is done so that the solution can be added immediately, rather than adding it over and over again after shrinkage.
Separately, we cut out pipes equal to the height of the resulting metal mold. They will form the necessary voids. Weld the holes at the ends according to the diameter, making the pipe “blind”. This will make it easier to remove the dried cinder block.
The cylinders need to be connected to each other closer to the top, maintaining the required factory distance. They must be firmly welded to the lifting lid.
We securely attach the vibration motor to the outside of the mold. It will ensure correct and rapid shrinkage of the solution. This is how the vibration casting process is carried out.

By looking at the 3D model of a cinder block machine, you can easily figure out how it works and what the principle of its operation is. And the dimensions of the model allow you to easily make the same equipment with your own hands according to the sample.

The kit contains drawings of a machine for the production of cinder blocks with your own hands and diagrams of more simple models vibrating machines for cinder block production:

Note. 3D models are saved in file formats: *.sldasm (an extension of the SolidWorks 3D editor, also supports free eDrawings) and *.step (a standard for exchanging 3D graphics that is supported by most 3D editors, including free ones: FreeCAD, Blender, etc.).

Making cinder blocks at home

The cinder block is made in a special form by vibration shrinkage of concrete mixture poured inside. After the material hardens, the hollowness of the block is about 30%-40% (depending on the shape - round or square) of the total area. The resulting cavities not only save consumables during the production of cinder blocks, but also serve air cushions for sound insulation. They are also excellent for reinforcing masonry, which gives walls maximum stability.

During manufacturing, it should be taken into account that standard size one cinder block is 39 x 19 x 18.5 centimeters. This is a standard, a generally accepted value from which builders build when designing and performing calculations. Therefore, strictly adhere to the parameters during home production building blocks.

For the production of cinder blocks at own machine you will need:

cement (M400, but better than M500);
water;
coal slag;
gravel (about 10 millimeters in diameter);
sand;
plasticizer (strengthens and dries blocks much faster in 2-3 days);
mesh seeder for cleaning sand from impurities;
concrete mixer;
shovel;
pallets on which you will dry the building blocks.

Attention! When preparing a concrete mixture, you should always control the amount of water in the composition. If you exceed the water norm by 30%, the concrete product will be exactly 2 times weaker!!!

All components of the solution are taken in the following proportion: 7 parts of slag, 2 parts of sand and gravel, 1.5 parts of cement, 0.2% plasticizer and water. The mixture should be moist and crumbly (fundamentally different from bricklaying mortar). When squeezed tightly in your hand, it should hold together in a lump, and when it falls to the ground, it should crumble. During the vibration of the machine, the mixture is compacted and visually, as if it squeezes out water, turning into a liquid solution. This natural process vibration casting of concrete. If the resulting concrete is too liquid, then no vibration rack will help ensure the integrity and strength of the cinder block, which will not dry completely and will soon begin to fall apart.

Financial costs for the production of 1 m 3 (71 pieces) of cinder blocks at minimum cost product:

When producing durable cinder blocks (for load-bearing walls) a semi-dry mixture is prepared for thin-walled concrete products. In the article “production of paving slabs” you can get acquainted in detail with the process of preparing a high-quality and durable concrete mixture of thin-walled products.

Note. It is worth noting that the same technology is used to produce expanded clay concrete blocks. Only the composition and recipe for preparing concrete differs.

Profitability of cinder block production

So, the cost of one square meter steel sheet will be about $4.3. Buying a motor (you can use a used one to save money) will cost an average of $30. One meter of pipe with a diameter of about 15 mm costs $1.4. If you have no experience in welding metal structures and the necessary equipment, be prepared to pay another $100 to a specialist who has the necessary skills.

This means that a home vibrating machine will cost about $400. At the same time, the cost of materials for the solution, which is enough to make a daily norm of 100 cinder blocks, will be another $30. Be prepared to spend $700 per month on Consumables for preparing concrete, etc. As a result, to start your own business you will need $1200-1300.

How quickly will this money be recouped? The cost of one factory-made cinder block averages about $0.7-$0.85. At the same time, home-made products will be sold cheaper, i.e. about $0.5. We will take this amount as the basis for calculating profit.

If you produce 100 pieces of products per day, you can earn about $20. Income per month if there is established sales will be about $600. As you can see, you can not only recoup your investment, but also gain profit in a short time.

As you can see, having your own vibrating machine for vibrating casting building blocks can not only simplify and reduce the cost of your construction, but also give rise to a profitable business!