Making a crusher

In Russia, approximately 2-3% of recycled waste is plastic waste. This type of material can be easily cleaned from organic residues, which makes it suitable for recycling. Opening a waste processing plant requires an investment of more than a million rubles. If there is a lack of funding, you can open a workshop that performs only part of the operations: receiving raw materials and crushing them, for example. To do this, you will need a small room and a plastic crusher, which you can assemble with your own hands.

Types of shredders

There are only three options for such devices, which differ in the ability to process a particular polymer material.
They are divided into options:

The design is similar to the V-blade on a pair of scissors and is suitable for shredding plastics such as acrylic, foil and nylon.
This type is mainly used in plastics factories, but also in processing plants.

They are offered in various designs: hammer, cone or jaw crushers. They are used for processing large plastic products such as window profiles.

The most common version has a rotating design and is used for processing thin-walled plastics such as bottles and foam.

A plastic shredder allows its owner to contribute to the environment and even earn money. The rotating version of the crusher is usually used for domestic purposes. Its design consists of a rotor on which the knives are securely fastened.

After switching on (and can work with both a liquid fuel engine and a conventional electric motor), the axis of the knife begins to rotate, so that the raw materials are crushed in such a device under the influence of fast and strong impacts.

On the underside of the crusher body there is a grate with a certain mesh size. This is determined by the final diameter of the fraction.

The raw material in the device is processed to the desired size and exits through this sieve.

To assemble a welding machine at home, certain skills in working with a welding machine are required.

A plastic shredder consists of elements such as, for example,.

Since this is the basis of the entire machine, they should be selected only according to the quality and various tooth configurations, which allows for better grinding of waste;

The best control method is to use the electric motor option. The reason for this is the greater choice and possibility of use not only outdoors, but also indoors;
saw axis;
The metal profile is also needed to make the frame and frame;
various fasteners;
a funnel through which the processed material passes, and a protective casing;
A special belt is required to connect the rotor, as well as a pulley and several bearings.

Choosing the wrong saw for your crusher can result in an imbalance in the axle, which can lead to vibration and faster wear on the structure.

How to shred a plastic bottle at home? — Machine tools, welding, metalworking

Industrial machines for recycling plastic are usually very expensive and quite complex in design. And, let's face it, recycling plastic on an industrial scale does not pay off.

Because the production cycle - " raw materials - plastic product " is much shorter and cheaper than - " garbage - sorting - plastic product - recycling - cleaning - raw materials - plastic product ."

That is why not all cities in the world have factories for processing plastic waste. And their mass appearance is not expected in the near future.

It turns out that the niche for recycling plastic at home is open. And it is waiting for those who monetize it from any side. But an ordinary person doesn’t need much.

After all, the beauty of this niche is that waste plastic, essentially garbage, lies under everyone’s feet and is of no use to anyone.

That is, excellent and durable material - for free! All that remains is to pick it up, process it in one form or another, and reuse it. And if you don’t like the result, rework it again!

Precious Plastic project helps all consumers give plastic waste a new life. He invites everyone to recycle plastic on their own using household machines, the drawings of which are freely distributed on the Internet.

This project, designed by Dutch designer Dave Hakkens , shows what can be done to help stop the plastic plague in the environment.

Dave, concerned about the problem of plastic waste, found on the Internet drawings of several devices that allow him to somehow recycle plastic at home.

Having collected the first samples, improved them, and developed a modular concept for future devices, Hakkens created the international project “ Precious Plastic ”.

In which he invites everyone to assemble and use four simple but effective plastic recycling machines.

The use of devices allows you to extend the service life of various plastic household items by simply recycling them into others. Unnecessary to necessary. Dishes, artificial rattan, various interior elements - here is a small list of items that can be made from household plastic waste using these machines.

Four devices, depending on the type and quality of the plastic, allow it to be processed in different ways:

Shredder or shredder - a device for grinding plastic waste into crumbs for subsequent processing - heating;
An extruder or extruder is a device that extrudes a heated plastic mass in the form of a rope or tape. That is, the result is artificial rattan or consumables for a 3D printer.
Injector or sprayer - heats polymer chips to a plastic mass and injects it into the desired shape;
Press - plastic crumbs under pressure and high temperature are pressed into various new objects.

The most amazing thing about the Precious Plastic is that such unique machines are given away for free. More precisely, the drawings of the device and instructions for assembling them are available to everyone (video instructions will be below). All that remains is to assemble the cars and start making money on them.

How to make money by recycling plastic at home? Recycling plastics and polymers at home!

Firstly . By recycling unnecessary plastic into useful plastic products and selling them as unique handmade items. This is the simplest and most affordable solution.

Secondly . Entire creative laboratories and coworking spaces are opening based on Hakkens machines. Where anyone can come with their plastic waste, pay money, and work on the machines.

Third . Assistance in assembling and selling devices. Not everyone can master device drawings. And, moreover, collect them. But they are ready to buy assembled similar machines. Why not take advantage of this? Moreover, ready-made devices are quite expensive. Assembly, if you have everything you need, will take no more than a month for any handy guy in the garage.

Fourthly . You definitely have your own ideas!

No. 4: how to assemble a press for plastic recycling

So, after studying the video, you can start assembling the devices. For more convenient work, we suggest you study the drawings on the official website of the project. In English.

If the devices are too complicated, you can look at a simple way to recycle plastic bottles at home.

Bonus: the simplest device for cutting plastic bottles

Plastic Bottle Cutter has launched on Kickstarter , giving consumers the opportunity to reuse plastic bottles.

The simplest device (and you will see this when you see the photo below) allows you to turn an ordinary plastic bottle into a plastic thread of various thicknesses, which you can use at your discretion.

From this thread you can weave various items - from small baskets to elegant furniture elements.

In general, disposable plastic bottles are a valuable resource due to the fact that the highest quality plastic is used in their production.

But this advantage is not taken into account by most people and the bottles are simply thrown away. The rate of bottle throwing is increasing every day.

Therefore, the challenge of effectively reusing and recycling these materials is imperative and imperative. This will reduce environmental pollution.

The plastic bottle cutter works as follows. The fixed blade slides along the plastic bottle, cutting the thread of the required thickness from its edge. No electricity or other energy - a holder and a cutter, that's all the simplest device of a cutter.

And such success is not surprising; watch a video about the operation of this cutter, as well as the use of plastic thread obtained from bottles.

More unusual business ideas:

Especially for hobiz.ru

Top 7 homemade equipment for plastic processing (PET, PVC)

Today we will talk about recycling waste in the form of plastic bottles and other polymers. This topic is relevant both in terms of building a business and in terms of improving the environment. Therefore, it concerns each of us.

It is impossible to cover all the nuances of working in this industry in one video. The purpose of this issue is to explain in accessible words how things are in this industry and at what stages money is made here.

The cost of industrial equipment for processing plastic bottles (PET, PVC) amounts to millions. We understand that this is not available to everyone. Therefore, we tried to make this review using the example of people with direct hands, who, without having multi-million dollar budgets, manage to take their small place in this industry with the help of homemade equipment.

Let's move on to the top:

Collection of raw materials and pressing

The plastic recycling process begins with the receipt of raw materials. No special license required.

Many stop at this stage and start a full-fledged business. It consists of collecting raw materials, pressing them and then selling them.

Garbage is actually only conditionally free and not everyone has access to city landfills. Therefore, if you do not do this on an industrial scale, you can try to exclude the landfill administration from this chain and receive raw materials directly from people and enterprises.

This can be done either through collection points or by installing special boxes around the city for collecting plastic bottles.

We make the crusher ourselves

Do-it-yourself rack: options and diagrams on how to quickly and easily make a high-quality rack
Owners who decide to assemble a plastic shredder themselves can find a lot of options for this useful device online and choose the most suitable one. Making this device with your own hands is not so difficult - you just need to be patient and have minimal operating skills. You can assemble a high-performance plastic processing unit without the use of special equipment. To complete the work, you only need a welding machine or a household inverter.

Tools

Each master can, at his own discretion, make changes to the diagram below, but in any case, a homemade plastic crusher will include the following required elements:

Drive unit. Usually an electric motor is used as it. If you don’t have what you don’t need, you can go to the store and find an inexpensive model with the required power among the range offered. A crusher equipped with an electric drive is also advantageous in that it runs more quietly, so it can be used not only outdoors, but also indoors.
Circular Saw. It will be responsible for processing plastic waste. Make sure you have a sufficient number of saws with different tooth shapes so that you can shred waste efficiently. Given the task at hand, it is ideal if you install at least 20 saws on one axis.
A working axis designed for mounting saws.
A metal profile that can be replaced with a pipe of a suitable diameter. The supporting frame and frame of the crusher will be made from it.
Protective cover and feed hopper. To make them, you can use galvanized sheets. You will also need a special tool - metal scissors, a hammer and a vice.
A pulley, a pair of bearings and a special belt that will support the interaction between the electric motor and the rotor.
Various types of fasteners - metal screws, washers and nuts.

After you resolve the issue with materials and tools, you can proceed directly to the crusher manufacturing process.

The process begins with the manufacture of a cutting block. Take the axle and put the circular saws on it

Please note that the saw seat must have the same diameter as the axis. Make sure there is enough space between the improvised knives to place the metal washers

To ensure secure fastening of the saws, you need to put nuts on the ends. After this, you can install the axle itself on the pulley. You need to put two bearings on it, then the structure will rotate freely.

At the next stage, we begin to make the supporting frame. We take a welding machine and make a rectangular frame using a metal corner, profile or pipe. Next, you need to weld the legs to it, calculating their height in advance. We lay a sheet of metal directly on the frame and weld it to the frame. You need to make a hole in the sheet, which should be the same size as the cutting block. Now you can install the engine, which we place near the knives.

After the work on manufacturing the frame is completed, we move on to the final stage of assembling the chopper. We take the protective casing, put it on the knives, and attach a hopper on top through which the raw materials for grinding will be supplied. Don't forget to make a hole in the casing for subsequent connection of the axle to the pulley. Next, you need to put on a special belt that will connect the motor shaft to the cutting unit. At this point, the work of making a plastic crusher with your own hands can be considered complete.

Device design

How to make foam plastic with your own hands

In order for a self-assembled plastic shredder to work with the greatest efficiency, choose a design that is suitable for disposing of the waste you are going to work with. Installations vary in complexity and equipment (filter screens, bearing units, type of saws, pre-pressers, etc.)

Single-shaft

This is the simplest design in which a rotor equipped with cutting edges rotates inside a stationary housing. Waste enters the device through the loading window. The crushed raw materials are sifted through a sieve under the influence of their own weight.

To make recycling faster, most single-shaft rotary shredders are equipped with a hydraulic pre-presser. This device presses pieces of debris against the rotor blades, reducing the risk of pieces of plastic slipping.

Single shaft shredder teeth

Some devices are additionally equipped with a pneumatic system for unloading raw materials. The single-shaft design is good for its simplicity, reliability and ease of assembly. It is better to use it for the primary grinding of particularly hard polymers.

Twin-shaft

Twin shaft shredder

In a more complex shredder, two rotors installed in one housing rotate towards each other. This design makes it possible to do without a pressing element, since the waste is pulled into the gap between the rotors. Better grinding is achieved, and the high torque allows you to load elastic plastic, rubber and elastomers into the crusher.

Where can I find a drawing or diagram

There are no drawings of shredders in the public domain, as manufacturers do not want their devices to be copied or produced without a license. Valuable tips, diagrams and sketches can be found on the forums. If you have a prototype product, carefully inspect it, or better yet, disassemble it by measuring the dimensions of the main parts.

Initial data for design

Decide which waste you will have to work with more often. Approximately calculate the amount of work and, based on it, determine the installation parameters:

power;
raw material supply window size;
diameter of rotors and their number;
configurations of knives or teeth (their size, relative position, sharpening, material).

In order not to calculate everything manually, find a factory crusher that would suit your needs, and build on its technical characteristics.

Drafting

Most people are content with a mini-crusher, which does not require expensive materials. However, for a DIY device to work correctly, you will need to study the theory of strength of materials. If you do not have minimal technical knowledge and experience in designing machines, it is better to invite an experienced person.

Designing a single-shaft shredder involves:

choosing an electric motor of suitable power;
calculation of shaft strength;
determination of the diameter and length of the rotor, the width of the loading window;
selection of bearings;
calculation of the gear ratio, selection of a suitable factory model.

Development of the shredder element

The drawing is made on graph paper or using the AutoCAD program. Calculating parameters “by eye” without drawings is fraught with a decrease in the productivity of the installation and increased danger when working with it.

approximate cost

How to make clay with your own hands

The price of grinding machines depends on several indicators: durability, brand popularity and performance. For example, for comparison, you can disassemble several devices:

Shredder model HSS-230A. Its productivity ranges from 100 to 200 kg per hour. Manufacturer: China, cost of the unit is $2,192.
Crusher XFS-3460. Its productivity is up to 500 kg per hour. The device is made in China and costs $7,800.
Shredder AMD-200D. Its productivity is up to 127 kg per hour. Domestic, the cost of the equipment is $2,500.

Experts recommend purchasing equipment from companies that specialize in the manufacture of crushers for plastic processing. Typically, such enterprises employ professionals who will help you decide on the most suitable crusher model. There are two main directions - by design and purpose. For example, to shred film, polyethylene, nylon and acrylic, the crusher must be equipped with a V-shaped shear. If you crush plastic, the equipment is equipped with cascade cutters.

The bottle crusher has maximum productivity when fully loaded. If you need equipment for grinding large parts, then it is better to choose the RFS, HZS and HNS series. The equipment is divided into the following categories by design:

https://youtube.com/watch?v=rZImovJUOdI

Equipment for crushing foam plastic

Impact crushers are usually used for this purpose. The units have high productivity and maximum load. For example, a high-speed shredder processes small material at a power of 10 kW per hour, and its operating speed is 100 l per second. If large-sized plastic is crushed, then work occurs at a speed of 15 liters per second, while the power will be less than 10 kW per hour.

Grinders of this type are divided into single-rotor and double-rotor, with or without a grate, which is used for hammer equipment. If an impact crusher is used, it will require more careful maintenance during operation. The rotary apparatus has significant advantages:

Uniformity of grinding.
High performance with low energy consumption.
There are two types of crushing - final and primary.

Scope of use

Depending on the material being processed, a certain type of equipment will be needed. For example, this could be a foam rubber crusher or a whole set of grinding mechanisms inside a universal apparatus. The polymer film is very easy to cut, but it cannot be crushed by impact. Large ABS parts can only be crushed, but cannot be cut. The thickness, fraction and size of the material influence the selection of a specific shredder model.

The chopper has small dimensions, only 1400 X 650 X 1500 mm, which allows you to install the equipment on a personal plot or indoors. The fraction is crushed by hitting the plastic on the rotor knives in the housing. The size of the crushed plastic is controlled using granules, which are produced using centrifugal force. This crusher model is designed for processing polystyrene foam, bottles, padding polyester, paper, foam rubber and film.

Crushers for plastic can be different: it all depends on your goals and financial resources. If you wish, you can purchase a “budget” Chinese version, which will last a certain amount of time and turn out to be useful, and if possible, it is best to make the equipment yourself.

Types of shredders

They are divided into options:

The design looks like V-shaped blades on scissors and is suitable for shredding plastics such as acrylic, film and nylon.
A type that is used mainly in factories where plastics are produced, as well as in recycling plants.

By design, they come in several types: hammer, cone or jaw crushers. They are used for processing large plastic products, such as window profiles.

The most common option has a rotor design and is used for processing thin-walled plastics such as bottles and polystyrene foam.

A plastic shredder will allow its owner to contribute to the environment and even earn money. For domestic purposes, a rotary version of the crusher is usually used. Its design consists of a rotor on which the knives are securely attached.

Mesh for crushers

After turning on (and it can work either from a liquid fuel engine or from a conventional electric motor), the axis with knives begins to rotate and, as a result, under quick and strong blows, the raw materials that get inside such a device are crushed.

At the bottom of the grinding body there is a grid that has a certain cell size. It is determined depending on what diameter the fraction should ultimately have.

The raw material is processed in the device until it reaches the desired size and exits through this sieve.

Useful tips

Users who make crushers for PET bottles with their own hands are advised to draw a drawing of the unit before starting. This will allow the equipment to be manufactured exactly as planned and will prevent missing parts.
When purchasing a motor, you should understand what volumes of raw materials the plastic crusher will encounter. The quality and speed of grinding depends on the power of the device. An oversized electric motor is suitable for periodic processing of materials. If volumes will increase in the future, it is better to choose a powerful motor in advance.
The design should be designed to be easily accessible for removing any element of the device, for example, circular saws for sharpening. To avoid having to take out the latter too often, it is better to initially choose light-alloy cutters. Their cost is higher, but the preservation of a good sharpening is high, which will make it possible to grind longer at home.
To ensure that recycled raw materials are in one place, it is useful to consider a container for collecting plastic. It is usually installed under the crusher blades. If you want to sort the cut plastic by size, homemade gratings or mesh elements with a given cell size are mounted below the disks.
Making your own PET crusher benefits the environment and the owner of the device. When using it, nature is not polluted by non-degradable plastic bottles, and the master has the opportunity to hand over the recycled material to a waste collection point.
If the structural part of a home-made unit is properly designed, the shredder will not only crush the raw materials, but also process the leaves and branches - for a gardener this will be an excellent alternative to burning branches on a fire by hand.

In just half a century, plastics have become a part of human life. Products made from them surround us, making life convenient and comfortable. Strong and lightweight, they are so cheap that many have become disposable. The flip side of this convenience is the huge supply of used bags, bottles, broken toys, etc. They do not decompose naturally and pollute the environment.

However, plastic is recyclable. Before plastic waste can be sent for recycling, it must be shredded.

Benefit

The main benefit of recycling plastic yourself is that unnecessary and cheap materials are used to create new products that are widely used in everyday life and other areas of our lives. Having built special equipment, you can organize a small business based on the production and sale of materials for subsequent processing (for example, flex) or ready-to-use items (plastic dishes, wicker furniture, etc.).

Industrial recycling of plastic involves solving many problems. It is much easier to recycle plastic waste at home. It is only important to set yourself a goal and decide on the direction of processing. And it is possible to design plastic processing devices of any complexity with the help of the “omniscient” Internet.

Now it is difficult to imagine your life without polymers. They have become firmly established in various industries. Many businesses use plastic crushers. Approximately 190 tons of plastic are produced on the planet every day. Most materials do not decompose into their individual components. If plastic is not recycled, it will pollute the environment.

Crusher design

A plastic shredder consists of several elements:

engine;
cutting mechanism;
drive;
sieves (filters);
loading pocket;
storage capacity;
frames and housings.

The main unit that ensures the operation of the entire shredder is the engine and the cutting mechanism. They are connected by a drive, and all components are fixed on a frame, which is covered with a housing to comply with safety regulations.

The entire design of the device is based on the choice of engine type: single-shaft or double-shaft.

Single shaft shredders

Single shaft design is suitable for plastic crushing to increase the density of raw materials. When passing through a single-shaft structure made from plastic waste, it will not be possible to obtain crumbs suitable as finished recyclable materials. The cutting tools are placed on a single shaft, which rotates to cut the plastic into small pieces.

A single-shaft plastic waste shredder is the simplest do-it-yourself shredding device. To do this, a shaft with knives is placed inside the housing, which rotate when a rotary engine, sometimes supplemented with a hydraulic press, operates. The design is compact enough to fit into a home and is used for the primary processing of large and solid plastic waste.

Twin shaft crushers

Higher productivity and precision during crushing is ensured by the double-shaft design of the crusher. Two shafts are designed so that the cutting elements are staggered relative to each other. Due to this, the entire surface of the loaded raw material is crushed. This is in contrast to the single-shaft design, where the plastic can slip through the knives and large pieces must be “driven” through the shaft several times.

In a two-shaft design, each axis rotates towards each other, ensuring that plastic is “sucked” into the knife mechanism, so additional reinforcement through a hydraulic press is not necessary for a two-shaft design.

Schemes and drawings

Self-assembly of the chopper must be carried out only according to the drawing. This will protect against damage to materials, help organize work and take into account the nuances in the design of the device. When drawing up a diagram or drawing, the operating conditions, assembly conditions, and the availability of available materials are taken into account in order to reduce the cost of purchasing new ones.

A ready-made diagram or drawing can be downloaded from the Internet, but in this case there is no full guarantee of the functionality and safety of the structure. There is no point in drawing up such drawings according to the rules of design documentation, so their interpretation may be complicated due to the author’s specifics.

Initial data for design

When drawing up the project, the types of waste that will be crushed in the device are taken into account. The choice of design, type of engine and cutting elements, and size of the device depend on this. In addition to the composition of the waste, it is necessary to consider the volume of input that will be processed in the shredder.

A universal grinder for producing fractions of different sizes allows you to change the number of knives and sieve density. By compacting the knife mechanisms and the sieve, a fine fraction can be obtained.

If it is expected that homogeneous waste will be processed, then it is sufficient to design the shredder with a rigid structure.

Step-by-step design instructions

Designing a shredder for assembling it yourself includes all the parameters that affect the device: from materials to the required performance. Based on this, the first stage of project development is an analysis of available resources and performance requirements. Based on the results of the analysis, the technical characteristics of the chopper are compiled:

power;
speed;
dimensions of the motor, loading pocket, sieve;
housing resistance to vibration loads.

Based on the compiled characteristics, the engine is selected and available means are adapted. The main element of the project is the drawn up drawing or diagram. In addition to the list of materials and dimensions of the device, it is necessary to reflect the order of assembly of the chopper.

Drive design

Most often, an electric motor is used to crush plastic, which allows the crusher to be placed indoors. For a shredder with a gasoline or diesel engine, you will have to additionally equip it with ventilation or place it outdoors. Typically, grinding uses a rotary motor connected to a shaft in one of two ways:

belt drive;
coupling.

A belt drive is larger and less reliable: the belt can come off or burst. A coupling connection can lead to jamming of the device, which is more difficult to resolve than a slipped belt.

Couplings are more compact than a belt drive, so when installing a shredder indoors, they are used more often.

Material and configuration of knives for cutting plastic

The cutting mechanism is made up of 15-30 circular saws placed on a shaft. The saws are placed with the same step relative to each other, and the size of the step determines the size of the fraction grinding. Knife materials suitable for cutting plastic: spring (65G, 60S2, 65S2VA) and die (X12MF) steels. The methods of placing saws relative to each other depend on the type of waste being crushed:

at an angle (“dovetail”) – for films, bottles, soft plastic;
straight - for rectangular and bulk containers: containers, boxes, lids.

Shaft for knives

The rotating axis on which the knives are placed is made of a steel pipe or rod. To secure the knives tightly, a thread is applied to it, and the cutting mechanisms themselves are attached with nuts. This fastening method allows you to replace knives or remove them for sharpening. If it is impossible to make a thread, then the knives are welded, which negatively affects reliability: at the welding site the greatest load occurs on the knife and the connection. In addition to threading, hex shafts are suitable for tight fastening.

Requirements for rotors

Safe and stable operation of the shredder is possible with the correct placement of the rotary motor, which must be centered relative to the shaft. Violation of centering will lead to friction of the knives against the walls of the housing. Under such conditions, they will wear down and become damaged, and the shaft will become less stable, which will lead to its destruction. Increased friction will cause the engine to overheat and may cause failure.

Frame material

The chopper frame is made of metal pipes or profiles. The frame is assembled taking into account the fact that the crushed residues should fall under gravity. Based on this principle, three grinder zones are distinguished:

from above or from the side – loading: vertical or horizontal;
in the middle - working;
below – accumulative.

The most efficient design is with a high load.

Due to this, the waste will not have to be additionally pushed into the working part; it will descend itself under the force of gravity. After assembly is completed, sheets are welded to the frame to serve as protective covers.

Bearing units

The consequences of incorrect shaft centering can be corrected using bearing units. They compensate for displacements from the axis - this requires self-aligning bearings. When installing bearings, it is necessary to take into account the distances between the cutting elements so that all parts fit smoothly on the shaft. Radial bearings are not suitable for centering because, due to the lack of a self-aligning mechanism, they do not correct the axial position.

Step-by-step assembly of all parts

When assembling, it is necessary to take into account that an increased vibration load is placed on the operating chopper. In conditions of strong vibration, the stability of the entire structure is reduced, and the threaded connections are weakened. Reducing the impact of vibration is achieved by centering the engine and wide placement of the legs. Due to increased vibration, the body is made by welding, and a hatch is cut out to access the main components.

Process of creation

After you have prepared everything you need for work, you can begin production:

First, the cutting apparatus is made by placing it on the prepared axis of the circular saw blades. Use nuts to keep the distance between the improvised blades.
We then assemble the structure onto the pulley and allow it to rotate freely through the bearing.
We are now making the rectangular frame and support frame from prefabricated metal materials.
At the next stage, the height-adjustable legs are also welded together.
The frame is then covered with sheet steel and welded to the frame. We drill a hole of the required size and fix the engine at the correct distance from the cutting elements. A protective cap and material container are essential for safety and effectiveness.
Once we have created the frame, we begin the final phase of assembling the plastic crusher. For this purpose, the knives are equipped with a so-called protective cover and a funnel through which raw materials are fed. When assembling the housing, it is necessary to provide a hole to connect the axle to the pulley.
The last step is to connect the cutterbar to the motor shaft using a belt. That's it, construction is finished.

The most important recommendation from experts is the need to make a drawing before starting work, since the planned project will look exactly like this. In this way, inaccuracies and discrepancies in the dimensions of individual parts can be avoided.

If you design and build such a device yourself, you can easily modify and customize it because you know its entire design.

The size of the shredded plastic corresponds to the size of the device itself.

To ensure that the processed broken material does not collect on the ground, it is recommended to clear space under the saws for attaching a special container into which it is collected.

Watch a video report about a high-quality plastic crusher made with your own hands:

Page 2

Try going without a car in a cottage or cabin, it won't work.

This is necessary for moving cargo, crops, and fertilizers.

A cheap one-wheeled, two-wheeled and four-wheeled assistant in the store, but assembled with your own hands, it will be no less useful.

Required tools and materials

The minimum set of tools for assembling a crusher is a grinder, a set of screwdrivers, bolts, nuts, angles and other fasteners, and a welding machine. It is better to make the crusher body dismountable to simplify maintenance, so bolted fastening is preferable.

You will also need circular saws for assembling the rotor, a drive belt, a metal pipe for the shaft, a plastic, metal or rubber-fabric casing for the loading window, a pulley and bearings, and a coupling.

What are there

A car differs from a cart in the number of wheels. A one-wheeled structure is called a wheelbarrow, and if there are several wheelbarrows, then it is a car.

One-wheeled “equipment” is indispensable for the garden and garden. The vehicle's maneuverability is good for narrow meshes.

The minimum width of the wheel allows you to carefully transport the load without damaging the plants. The car is not suitable for such tasks. But this is necessary at a construction site, in a livestock yard, cleaning up dust accumulated after winter and much more.

It is reasonable to have both types of wheelbarrows in use; the wheelbarrow is not stable, the wheel requires tension while driving. It is more convenient to carry loads on two- or four-wheeled structures.

Another reason to buy both a car and an automobile is to use them for different purposes. If manure is being removed from the barn for the first time, it should not be used to transport harvested crops from the garden or orchard. Therefore, the right decision would be to find an assistant.

Purchase of equipment for shredding plastic waste

Experienced plastic waste recycling experts advise budding entrepreneurs to buy a plastic crusher in China. It is known that Chinese manufacturers are currently superior to most of their competitors in the production of various equipment, not only in the low cost of plastic crushers, but also in their quality.

Currently, there are a lot of offers on the equipment market for the sale of mini crushers for plastic. These are compact units that, with low energy consumption, are capable of producing up to 5,000 kilograms of recycled waste per work shift.

Moreover, the price of a plastic crusher in a mini version usually does not exceed 250,000 rubles. This Chinese equipment can satisfy the plastic processing needs of almost an entire small town.

With a loading window size of 360 × 500 mm, the unit uses an 11 kW electric motor. The unit contains 15 rotor knives and two fixed stator knives. The fractional sieve is capable of sifting waste crushed up to 10 mm in diameter. But the productivity of the device will pleasantly surprise even experienced processing masters - up to 700 kilograms of raw materials per hour.