Characteristics of work. Cutting rubber products to a given size with a special knife on lathes or special machines with an accuracy of over 0.3 mm or performing operations only for unpacking rubber. Selection of washers, selection and sharpening of cutters and knives. Putting the workpiece on the mandrel and securing it in the chuck of the machine. Starting the machine and cutting workpieces in accordance with technical requirements. Upon completion of cutting, stop the machine, remove the products from the mandrel and store the cut products in containers.

Must know: techniques for cutting rubber products; product design; requirements for product quality; arrangement of cutting machines and devices; types and types of rubbers, their purpose in production.

Work examples

1. Rings from scraps of bicycle tubes - cutting.

2. Rings and covers for heating pads, ice packs and other hygiene products - cutting.

3. Esmarch mugs, ebonite bushings for oxygen pillows - cutting.

4. Cycling chamber tubes - cutting.

§ 72. Elastomer and rubber cutter, 2nd category

Characteristics of work. Cutting by hand or on lathes or special cutting machines of various rubber products with an accuracy of 0.2 - 0.3 mm or preparation for rubber production. Fastening products to the washer or shaft of the machine, installing stops, knives and cutters, cutting into parts in accordance with technical requirements. Removing the cut roller of the fabric from the machine, removing the cut roller tape and transferring it to the next operation. Sharpening and changing the cutters. Performing operations on lubrication and tying of cut belts when cutting belt plates on a Zhurmanov machine.

When preparing rubbers: unpacking the rubber, cleaning it from external contaminants and labeling by type and grade. Manual separation of natural rubber into separate sheets for the production of especially critical rubber mixtures; control of each sheet by illumination with reflector lamps and removal of foreign inclusions from the processed sheets. Manual cutting of rubber, regenerator, gutta-percha and other elastomers into pieces of established sizes and various configurations.

Must know: techniques for cutting rubber products; methods of pre-treatment of each type of rubber; product design; technical requirements requirements for products; device and rules for setting up equipment.

Work examples

1. Vikels on rings ( fruit and vegetable production) - cutting.

2. Electrical tape - cutting.

3. Rubber eraser - cutting.

§ 73. Elastomer and rubber cutter of the 3rd category

Characteristics of work. Cutting rubber products with an accuracy of 0.2 mm on lathes or other special machines. Cutting of various vulcanized plates into rubber threads or end belts and tracks on specialized machines. Cutting rubber products on a circular knife. Cutting rubber, regenerate, gutta-percha and other elastomers manually or using special devices into pieces of established sizes and various configurations. Cutting the sponge chamber after straining with special knives. Bringing the sponge chamber blank to the specified weight by cutting off excess rubber. Trimming beads and tread on pneumatic or disc bead cutting machines. Independent setup and maintenance of plate cutting machines. Setting up knives. Monitoring the operation of the machine and the cutting process. Changing knives.

Must know: technological process rubber cutting technical products, rubber products and plates, elastomers; design and purpose of products; requirements for product quality; rubber brands; design and rules for setting up equipment.

Work examples

1. Sponge chambers - cutting with special knives.

2. Rubber thread - cutting on Weyer or Shaw machines.

3. Belt plates and caterpillar tracks - cutting on a Zhurmanov machine with independent adjustment of the machine.

4. Mipor plates of separators - cutting.

5. Scrap rubber - cutting on machines.

Waterjet cutting is an excellent technology that is used for cutting a wide variety of materials, including rubber. The density and thickness of the rubber layer can be almost any. For example, the thickness of the material can be from 0.1mm to 300mm and even more. Usually, waterjet cutting of rubber They are ordered in the manufacture of gaskets and seals for various mechanisms, in the manufacture of non-serial samples or parts, where it is simply expensive to order large quantities. In the manufacture of elements of complex configuration. There were also situations when owners of rare cars needed to replace a damaged gasket and ordering one from the manufacturer was longer and more expensive than cutting it out on a waterjet cutting machine. In addition, it can be used to make car parts from other materials such as metal or plastic.

We can cut a custom-made gasket of any complexity if you have a drawing or sample. When the machine program file is compiled, it can be saved to a flash drive or disk and used again in the future, or slightly edited and used again.

U water jet cutting of rubber there are a number of advantages over other technologies. For example, low cost. In addition, when waterjet cutting there are no mechanical and high-temperature effects, as when cutting with a laser, cutter or plasma, the characteristics of the material being processed do not change, the cut is very high quality and accurate, the edges of the material being processed are not melted, and the characteristics of the material of the blade as a whole do not change.

Prices for waterjet cutting of rubber

Waterjet cutting of rubber - examples of work

Rubber cutting - video

Is it necessary or possible to save some money? What is a protector? How to cut it? Which tool to use - homemade or professional? Is it better to do everything yourself or contact a specialist? Similar doubts and questions torment a lot of motorists who either have their replacements due or have come due. First, you need to decide what a protector is, and only after that prepare for its resuscitation.

The tread is a part of the tire designed to purposefully increase the contact patch between the tire and the road surface.

In addition, it protects the inner part of the “rubber” from various damages.

Almost all tires can be divided into 4 categories based on tread type:

In addition, the protector can be:

• directed;
• undirected;
• symmetrical;
• asymmetrical.

DIY tire tread cutting

There is no strict need for this procedure - if you have an old tire, it’s easier to throw it away and buy a new or used tire good quality. But there are often situations when a car owner evaluates the condition of the tires before installation and comes to the conclusion that they are almost enough for another season. In this case, there is a reason for cutting the tread, which will help the rubber “hold out” to the last milestone.

Can tires be cut? There are a lot of diametrically opposed opinions on this matter. Some argue that this can and should be done, justifying such actions by the dividends that the car owner will save. Others warn against this practice, pointing out that during this procedure almost 100 percent of the cord will be damaged and the rubber will be irreparably damaged.

In fact, you can cut rubber, but only those products that are marked with one of the following:

This mark means that the manufacturer allows cutting the tread on this tire. In this case, during production at the enterprise, a special layer of rubber is deliberately created, which allows these manipulations to be carried out with it, without fear that the strength characteristics will be reduced and the integrity of the product will be compromised.

The problem of disagreement lies in the fact that many popular “Kulibins” do not pay attention to such markings and cut the tread on all tires in a row. Naturally, on high speed the consequences will be disastrous, so relying on chance is not recommended.

Which tool should I buy?

There are many options for building a homemade cutter, but experts recommend abandoning this idea and using only certified products.

For work, you must use only professional tools and rubber suitable for cutting!

Tread cutting machines can be different - from the simplest, without overheating protection and with a limited number of cutting blades, to “advanced” ones, with power adjustment, equipment protection from overheating, trapezoidal and rounded blades and other “devices”.

The simplest models can be purchased for up to 8,000 rubles. For example, the German device S125B, priced at 7,800 rubles. It is used only for working with passenger car tires and has all the disadvantages and limitations listed above.

As for the top versions, the German S146B device remains very popular, selling for 17,500 rubles. This tool has a special temperature sensor, as well as a housing equipped with a toroidal transformer. All this increases labor productivity. The transformer is made in a cast design, with moisture-proof insulation. The device is equipped with a convenient holder, as well as a flexible power cable, which greatly simplifies the work. There is a switch (high temperature type) and additional ability to adjust the knife settings, and it is fully compatible with RILLCUT type knives (already available). This device is designed for cutting grooves with a depth of 2 to 12 mm, and a width of 2 to 20 mm.

Process technology

Before starting work, you need to stock up on professional tools, then thoroughly clean the tire and inspect it for defects or damage. If there are any, they need to be eliminated (if possible) and work can only begin after restoration.

The described procedure can be seen in the video below.

As you can see, cutting tires yourself is not that difficult. The main thing is to purchase quality equipment and competently perform all actions without neglecting any stage. Also, you should not try to perform operations on tires that are not designed for tread cutting.

§ 71. Elastomer and rubber cutter, 1st category

Characteristics of work. Cutting rubber products to a given size with a special knife on lathes or special machines with an accuracy of over 0.3 mm or performing operations only for unpacking rubber. Selection of washers, selection and sharpening of cutters and knives. Putting the workpiece on the mandrel and securing it in the machine chuck. Starting the machine and cutting workpieces in accordance with technical requirements. Upon completion of cutting, stop the machine, remove the products from the mandrel and store the cut products in containers.

Must know: techniques for cutting rubber products; product design; requirements for product quality; arrangement of cutting machines and devices; types and types of rubbers, their purpose in production.

Work examples

1. Rings from scraps of bicycle tubes - cutting.

2. Rings and covers for heating pads, ice packs and other sanitary products - cutting.

3. Esmarch mugs, ebonite bushings for oxygen cushions - cutting.

4. Cycling chamber tubes - cutting.

§ 72. Elastomer and rubber cutter, 2nd category

Characteristics of work. Cutting by hand or on lathes or special cutting machines of various rubber products with an accuracy of 0.2 - 0.3 mm or preparation for rubber production. Fastening products to the washer or shaft of the machine, installing stops, knives and cutters, cutting into parts in accordance with technical requirements. Removing the cut roller of fabric from the machine, removing the cut roller tape and transferring it to the subsequent operation. Sharpening and changing cutters. Performing operations on lubrication and tying of cut belts when cutting belt plates on a Zhurmanov machine.

When preparing rubbers: unpacking the rubber, cleaning it from external contaminants and marking it by type and grade. Manual separation of natural rubber into separate sheets for the production of especially critical rubber compounds; control of each sheet by illumination with reflector lamps and removal of foreign inclusions from the processed sheets. Manual cutting of rubber, regenerator, gutta-percha and other elastomers into pieces of established sizes and various configurations.

Must know: techniques for cutting rubber products; methods of pre-treatment of each type of rubber; product design; technical requirements for products; device and rules for setting up equipment.

Work examples

1. Wikels for rings (fruit and vegetable production) - cutting.

2. Electrical tape - cutting.

3. Rubber eraser - cutting.

§ 73. Elastomer and rubber cutter of the 3rd category

Characteristics of work. Cutting rubber products with an accuracy of 0.2 mm on lathes or other special machines. Cutting various vulcanized plates into rubber threads or end belts and tracks on specialized machines. Cutting rubber products on a circular knife. Cutting rubber, reclaim, gutta-percha and other elastomers manually or using special devices into pieces of established sizes and various configurations. Cutting the sponge chamber after straining with special knives. Bringing the sponge chamber blank to the specified weight by cutting off excess rubber. Trimming beads and tread on pneumatic or disc bead cutting machines. Independent setup and maintenance of plate cutting machines. Setting up knives. Monitoring the operation of the machine and the cutting process. Changing knives.

Must know: technological process of cutting rubber technical products, rubber products and plates, elastomers; design and purpose of products; requirements for product quality; rubber brands; device and rules for setting up equipment.

Work examples

1. Sponge chambers - cutting with special knives.

2. Rubber thread - cutting on Weyer or Shaw machines.

3. Belt plates and caterpillar tracks - cutting on a Zhurmanov machine with independent adjustment of the machine.

4. Mipor plates of separators - cutting.

5. Scrap rubber - cutting on machines.

Cutter for cutting LPG tires (large-size tires), “BB” series Designed for cutting tires into pieces. The cutter easily cuts into pieces, fragments of tractor and Belazov tires. Tires are cut into two bead rings, two sidewalls, a treadmill cut radially into two parts, a total of 4-8 ring fragments. The resulting fragments in the form of rings are ready for deeper processing. Transportation, loading, and storage of such cut tires are several times cheaper than solid tires. In addition, we receive a semi-finished product suitable for deeper processing into crumb rubber using standard equipment. For further chopping, hydraulic alligator shears of the “NS” series are used. It can be used as independent or additional equipment in rubber processing lines. The machine is mobile and can be transported to places where tires accumulate.

Operating principle of BB tire cutters:

1. Before recycling, the tire must be checked for the presence of foreign objects (stuck nails, fittings, stones, etc.)
2. The tires are transported to the recycling site. The movement can take place: with a manual loader such as a rokhlya, with a mechanized forklift, with the help of an electric hoist, rolled up by a worker manually or in the back of a car with a crane installation on board.
3. The worn tire is lifted using the tire lifting and landing system ( additional option machine BB) or a manual or mechanical winch, an electric hoist to the level of the landing clamping chuck and is inserted into it.
4. The chuck clamps the tire; this is done by the worker: he mechanically opens the clamping arms of the chuck. One of the clamping arms of the seat chuck must be strictly in the center, on top, otherwise the tire will be clamped unevenly. The tire should fit into the cartridge until it stops.
5. After this, the chuck drive is turned on and the tire begins to rotate.
6. Initially, the lower knife cuts the tire in the center of the treadmill. The knife enters the rotating tire gradually, it is brought in by the worker through the extension system (according to the principle of operation of the cutter lathe). When cutting thick rubber, the tire is cut in the tread area in approximately 4-5 revolutions of the tire. After completely cutting the tire along the center of symmetry, the lower knife slides back.
7. Next, the upper side knife extension system is activated, and the sidewall (bead) of the tire is cut out. The side knife, like the bottom one, is brought in gradually by the worker through a mechanical drive. At this point of the cut, the tire has a thinner layer of rubber and is cut in an average of 2-3 turns.
8. Next, the knife extension system moves towards the seat ring and, as in step 7, the seat ring is gradually cut out.
9. After this, the drive of the seat chuck is turned off, the seat chuck is slightly expanded, and then the worker removes all the cut out parts (if the weight of the fragments is large, then they are removed using a tire lifting and landing system or other mechanized method).
10. The second symmetrical part of the tire with the bead and seat ring not yet cut out is hung into the clamping chuck using a lifting mechanism.
11. Next, the machine is turned on, the bead and seat ring are cut out (same as in paragraphs 7.8).
12. All parts of the tire are put aside or go to the second stage of processing.
13. The KGSh cutter is equipped with a mounting chuck, which is included in the standard equipment of the machine. The manufacturer recommends processing tires in groups that differ in bore diameter, which saves time on machine settings. When moving from one group to another, it is necessary to rearrange the clamping jaws of the chuck along the holes.

At the output we have a tire cut into 6 rings. This includes cutting out 2 landing rings with a thick bundle of thick bead wire in a rubber sheath. As a rule, cut-out rings from passenger cars, trucks and heavy-duty vehicles are not used for further processing and are removed at the very first stage of recycling.
Separately, a number of features of large tires should be noted:
- KGSh are tires over 1200 mm in diameter. Up to 1200 mm these are passenger and truck tires.
- due to their design features, it is problematic to pull out thick bead wire from CGSH using a hydraulic cord puller type DS-500. The hydraulic cord puller can remove steel cord from tires with an outer diameter of up to 1200 mm. Based on the above, it is possible to remove the thick bead wire from the KGSh in the bundle of the landing ring only by cutting it out together with the landing ring on BB series machines.
- BB series machines allow you to cut large tires into fragments that can be easily processed using standard equipment. In their entirety, processing KGSh and SKGSh requires expensive equipment, which is more than 15 times higher than the cost of BB series machines. With such processing of CGSH, energy consumption is disproportionately higher. The equipment is heavy and not mobile. The BB series machines make the processing of carbon steel low-cost.
- In the production of KGSh and SKGSh, the highest quality rubber compounds are used. Crumb rubber obtained from fragments of rubber rubber has high quality and is in greater demand than regular tire crumb.
- The cost of recycling tires is significantly higher than recycling conventional tires for organizations that hand over tires. Therefore, for a tire recycler, if it is possible to recycle SGSh, this means higher production profitability.

Advantages:

• The cutter has high productivity, with low En. consumption.
• Light weight and dimensions, which makes it mobile and easily transportable.
• High strength of all components, multiple safety margin.
• The knives are almost never dull and can simply be sharpened if necessary.
• The cutter is easy to operate, maintain and operate.
• In the entire history of the creation of this series of BB machines, there has not been a single breakdown!

Machine BB-400 for cutting tires with a diameter of up to 1600 mm.

Cuts tires with an outer diameter from 600 to 1600 mm into four to six parts: two seat rings, two sidewalls, cuts the tread into two parts.

An optional mechanism for lifting and landing tires is included, with a capacity of up to 500 kg.

BB-500 machine for processing Belaz tires and other tires with an outer diameter of up to 2000 mm.

Cuts tires with a diameter from 900 to 2000 mm. into four to six parts: two seat rings, two sidewalls, cuts the tread track into two parts.

An optional tire lifting and landing mechanism is included, with a capacity of up to 800 kg.

BB-600 machine for processing Belaz tires and other tires with an outer diameter of up to 3000 mm.

Cuts tires with a diameter from 1500 to 3000 mm. into four to six parts: two seat rings, two sidewalls, cuts the tread track into two parts.

As an option, a mechanism for lifting and landing tires is included, with a capacity of up to 2000 kg.

BB-700 machine for processing Belaz tires and other tires with an outer diameter of up to 3500 mm.

Cuts tires with a diameter from 1800 to 3500 mm into four to six parts: two seat rings, two sidewalls, cuts the tread tread into two parts.

As an option, a mechanism for lifting and landing tires is included, with a capacity of up to 4000 kg.

Comparison table of tire cutters of the "BB" series:

* machine height including tire lifting system.

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