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INVENTION
Russian Federation Patent RU2077423

METHOD FOR PROCESSING RUBBER GOODS

METHOD FOR PROCESSING RUBBER GOODS

Name of the inventor: Vlasov VN .; Vlasov AN .; Samartsev MG .; Iwashko MN .; Protasov SI .; Bogomolov probation etc. .; Pryschenko NV
The name of the patentee: novation company "Kuzbass-NIIOGR"
Address for correspondence:
Starting date of the patent: 1994.04.19

Usage: The invention relates to methods for processing of rubber products, in particular to the processing of waste (worn, damaged) vehicle tires and can be used for recycling tires, including oversized with metal cord, and the manufacture of these building elements and parts used in Farmland, t. e. the consumer goods.

SUMMARY OF THE INVENTION: before the first milling stage are applied on the tire surface grid of parallel cuts in a vertical and horizontal planes with a distance between them equal to the size and depth of the crumb rubber. At this first grinding step produced by mechanical removal of part of the cured layer while maintaining tire shape. Before the second step of grinding produces marking on the tire blank for manufacturing products followed by separation of the tire on the preform and applying a similar mesh cuts parallel to each preform. In this second milling step is carried out by removing the remaining portion of each cured layer blanks for exceptions exposure cord strength and preserve the preform

DESCRIPTION OF THE INVENTION

The invention relates to methods for processing of rubber products, in particular to the processing of waste (worn, damaged) vehicle tires and can be used for disposal of tires, including oversized with metal cord, and the manufacture of these structural elements and components used in private households, ie consumer goods.

A method of processing amortized tire comprising cooling the tire to the state of embrittlement and mechanical impact force on it, while after each stroke by a half pitch tire is moved across the surface of the ribs (see. AS USSR N 1577986).

The disadvantage of this method is the large power consumption of the process, resulting in poor efficiency of the process of processing and further use of the processed product.

Known and the method of extracting the metal reinforcement of rubber tires in which the tire with the valve is placed in a high-frequency electromagnetic field, pinch the local portion of the tire between the pairs of rollers, heated tire to pyrolysis temperatures close to the reinforcement rubber layers and the formation of pyrolysis swelling, then give the tire rotation relative to the rolls and then separated from the tire valve (see. a. c. USSR N 1770137).

The method is characterized by the complexity of the process and the impossibility of use of the rubber cord for re-use. Furthermore, the method has a high risk for maintenance personnel.

Known and method for processing the worn tires with metal cord comprising stepwise grinding tires, magnetic separation and sorting, firing residues from steel cord in rubber initially with air heated to 500-700 degrees Celsius, and then supplying the air without its purification from sol-coke residue and metal oxides, and by passing through the tempering rollers, and then after an additional magnetic separation packaging steel cord (see. aS USSR N 1685721 prototype).

The disadvantage of this method is the great difficulty of processing of tires with metal cord, the low quality of the products due to blockage of the destroyed metal cord, which does not allow to dispose of used tires effectively. A disadvantage of the existing methods is that part of the reclamation tires with metal cord is not in use, in particular as building materials and consumer products.

The technical result of the invention is to increase the efficiency of recycling used tires.

The object is achieved by the method of disposal of used tires involves stepwise grinding waste tires, wherein before the first step of grinding the surface of the tire applied to a grid of parallel cuts in the vertical and horizontal planes with distance between them and a depth equal to the size of the rubber crumb, wherein the first grinding step produce removing mechanically part vulcanized layer while maintaining tire shape, before the second step of grinding produces marking tire surface on a blank for the manufacture of products followed by separation of the tire on the preform and applying a similar grid of parallel cuts on each blank, wherein the second grinding step is carried out by removing parts cured layer remaining on each workpiece to expose the workpiece and maintaining the cord strength.

New the invention is that before the first step of grinding the surface of the tire applied to a grid of parallel cuts in the vertical and horizontal planes with distance between them and a depth equal to the size of the rubber crumb, wherein the first milling stage produces removing mechanically part vulcanized layer while maintaining tire shape before the second step of grinding produces marking tire surface on a blank for the manufacture of products followed by separation of the tire on the preform and applying a similar grid of parallel cuts on each blank, wherein the second grinding step is carried out by removal of the remaining cured layer on each workpiece to expose the cord and preserving strength workpiece.

The essence of technical solution is illustrated by drawings, where Fig. 1 shows a bowl; FIG. 2 shell is; FIG. 3 Separating ring; FIG. 4 - bottom; FIG. 5 ring; FIG. 6 Pavement; FIG. 7, the same section A-A; FIG. 8 improved paving slabs; FIG. 9 is a sectional view B-B; FIG. 10 construction plate; FIG. 11, the same section B-B; FIG. 12 - Spacer; FIG. 13 chair. Reference numeral 1 in the figures denote separated product; numeral 2 removed in order to obtain the vulcanized rubber crumb rubber layer; 3 fixing points; 4 the tank bottom (Figure 1.); 5 bottom bracket (Figure 4.); 6 base chair.

A method of tire recycling is as follows. Faulty tires sorted into groups. Group 1 tires without impulses; Group 2 tires having impulses at one end portion (surfaces); Group 3 tires with gusts from the cured layer, with the damage of the cord.

groups sorting is necessary in order to determine how the bus can be used under a particular workpiece (structure).

After sorting the tires perform initial removal of a vulcanized rubber layer to retain the original shape of the tire. In order to receive a rubber crumb-programmed (preset) the size of the vulcanized tire surface covered with a grid mechanically parallel cuts in the vertical and horizontal planes, with the distance between the parallel cuts equal to the predetermined size of the crumbs. The depth of cut is needed and the size of the crumb rubber thickness. Removal of the cured layer with notches carried out by mechanical means, one of the possible operations: planing, turning, milling, etc. For notches cutting tool is placed in two mutually perpendicular planes. cuts system ensures each element of rubber crumb with the specified amount of free surface with five sides. Therefore, the separation element of the tire is carried out by mechanical means using less energy.

After the initial removal of the cured layer of the tire is carried out, depending on the wear type (ie tires group) tire markings onto the workpiece (design elements) for the cup mantle, enclosing the ring of the bottom, a ring, paving tiles, improved paving slabs, construction plate, remote seals, highchair.

Marked tires mechanically dismembered into blanks described above. Moreover, the bowl can be made of two groups: non-impulses with impulse in one end portion (surfaces).

1. Production of the cup (FIG. 1) is done by cutting one end portion (surfaces) of the tire. (For details of examination. The second group of tires removed the damaged end portion).

2. Fan Casing (. Figure 2) may be made of two groups and tires: no impulses and impulses having in the end surfaces of the tire. Shell is manufactured by cutting both end surfaces of the tire.

3. Separating the ring (Fig. 3) is made from billet tires with cut end portions (surfaces).

4. Bottom (Fig. 4) is made by breaking in half in the tire rolling surface.

5. Rim (5) is produced by separation from the flanged end portion of the tire ring.

6. Paving tile (6, 7, 8 and 9) is made from the blank end portion of the tire. Paving tiles can be made without cutting radii (6 and 7), and a high quality cut with rounding and additional processing work (front) surface (8 and 9).

7. Construction plate (FIGS. 10 and 11) is made from the working surface of the tire.

8. Spacer (FIG. 12) is discharged from the end surface of the tire blank and the waste and all tires having defects and can not be used to manufacture other parts.

9. The chair (13) may be made of any group of tires. When the tire is cut in half, then each half is marked segments without damage. Fixed to a wooden, metal or other grounds 6 chair set in the recreational areas at their summer cottage, etc.

Having obtained by breaking the above preform for manufacturing tires, they are treated to the required size by a further (secondary) removing the cured layer by mechanical means. For this purpose, a vulcanized layer (surface) is applied to blanks mesh cuts (see. The above description). Then mechanically with vulcanized layer blanks separated rubber crumb of a given size. When removing the cured secondary layer and retain a safety cord rubber layer that provides strength (rigidity), and durability of the product. By removing the cured layer of the preform is brought to a predetermined size and significantly reduced weight. For presentation of the work (front) surface of the parts may be sand or stone shaped cutting tool.

To reduce the complexity of machining workpieces and complexity of grinding swarf workpiece parts can be cooled to -70 o C (getting brittle rubber) and processed in a refrigerated environment, conventional cutting tools.

The proposed method allows utilization of practically all the tires used for the preparation of raw materials (crumb rubber) and consumer goods. Rubber crumb is a valuable raw material for the rubber industry, and the construction details and elements are very necessary in subsistence farming and rural life of the worker, in the suburban areas of the townspeople.

The strength and durability of manufactured parts, components and structures significantly higher than in the manufacture of wood, steel, concrete, and the weight is 2-3 times less, which is very important when used in everyday life, when used mainly manual labor.

CLAIM

Method of recycling waste tires comprising stepwise grinding of worn tires, characterized in that, before the first step of grinding the surface of the tire applied to a grid of parallel cuts in the vertical and horizontal planes with distance between them and a depth equal to the size of the rubber crumb, wherein the first milling stage produces removing mechanically part vulcanized layer while maintaining tire shape before the second milling stage produces marking tire surface on a blank for the manufacture of products followed by separation of the tire on the preform and applying a similar grid of parallel cuts on each blank, wherein the second grinding step is carried out by removal of the remaining cured layer of each blank to exclude exposure of the cord and save the blanks strength.

print version
Publication date 12.12.2006gg