RU2605128C2 - Method of grinding and cutting of rubber by boring - Google Patents

Abstract

FIELD: tools.

SUBSTANCE: invention relates to method of grinding and cutting of rubber by boring. According to method boring equipment is used for production of rubber crumb, crushed rubber or rubber fragments by boring initial raw rubber.

EFFECT: invention reduces cost of processing equipment, consumed energy for production of rubber crumb or crushed rubber, reduces area of arrangement of equipment, simplifies process of grinding.

4 cl

Description

The invention relates to a method for grinding material, and in particular to a method for grinding and cutting rubber by drilling.

There are various technologies for processing rubber, including used tires (as the most large-tonnage rubber waste on planet Earth) into rubber granules, in other words into crumbs. The main types of technology for processing rubber waste are: a mechanical method of grinding crushed or crushed into rubber; pyrolysis; combustion in furnaces to generate heat or electricity.

There are also combinations of grinding technologies: a mechanical method with preliminary cooling of the material to facilitate crushing, when the rubber becomes more malleable. Explosive grinding method + mechanical regrinding and other less well-known.

The most popular recycling technology is mechanical grinding due to its environmental friendliness. Due to the mechanical grinding of rubber into crumbs, it is possible to reuse recyclables into economic circulation. The used tire processing product - crumb rubber - is a raw material for the production of asphalt mixtures, an oil sorbent, a raw material for the production of rubber regenerate, a raw material for the production of rubber flooring for sports and playgrounds, and much more. According to recent studies, more than 90% of recycled car tires in Russia are processed precisely by the mechanical method. Of the 100% crumbs produced in Russia, more than 80% goes to the production of colored rubber coatings in the form of blocks (segments, mats) or colored seamless floor coverings.

However, the technology of mechanical processing of tires has its drawbacks: the high cost of equipment; the need for sufficiently large areas to accommodate standard existing lines; high power consumption in the production of crumbs. All this affects the cost of production of rubber crumb and, as a consequence, the cost of rubber products from crushed rubber.

Analogues of devices and methods for grinding rubber by drilling were not found.

Therefore, the technical task of the present invention is:

- reduction in the cost of processing equipment;

- reduction of energy spent on the production of crumb rubber or crushed rubber;

- reduction in the area of equipment;

- simplification of the grinding process.

To solve the technical problem, a method for grinding rubber by drilling is proposed, in which drilling equipment is used to obtain crumb rubber, crushed rubber or rubber fragments by drilling the original raw rubber.

Commonly used technologies include cutting, breaking, shearing, chopping rubber, while the method of the present invention involves drilling rubber. In this case, it is possible both to drill rubber into chips, chips, and rubber cutting by drilling or, in other words, breaking into smaller fragments.

In the processing of automobile tires of the present invention, the whole tire is cut into smaller fragments, mainly rectangular in shape, for example 130/130 mm, or strips, for example 50/150 mm.

The resulting fragments are placed in a holder, which can be made in the form of a rectangular metal box, and stacked on top of each other. The size of the box allows you to accommodate rubber fragments, and a rectangular shape prevents them from scrolling during drilling. The material holder is located under the rubber drilling machine on the spindle travel line.

With the optimal spindle speeds tuned, the drill head is brought down to the holder and lowered. To increase productivity, use a multi-spindle drill head.

Two or more spindles are used, which are connected to the drills through rubber.

Can be used as different angles of inclination of the sharpening of the cutting edge, and the design of the removal of chips. For each type of material, it is optimal to choose your cutting mode and your type of drill.

The resulting material can be adjusted in fractions using the angle of sharpening of the edge of the drill, type of drill, spindle speed and feed rate of the spindle into the material.

To divert the resulting product from the holder, it is possible to use holes made on its side walls.

The resulting rubber crumb or shavings can be as clean (from parts of tires that do not contain cord threads of metal and textile) of different fractions, including fractions suitable for use in the production of finished products, and in need of additional grinding. The resulting rubber particles may be with filament inclusions (metal and textile) and need to be separated from these components.

A multi-spindle head can transmit torque to two or more drills. Boers can be located both in one row, and in several rows and in other combinations. The diameter of the drill / drill is selected depending on the goals and objectives of the production. The smaller the diameter of the drill, the smaller the rubber fragments at the outlet.

A multi-spindle head with drills arranged in a row (two or more) can be used not only for crumb production, but also for preliminary cutting of whole tires into fragments.

This technology allows you to process large tires with both metal and textile cords into fragments.

This technology also allows you to process whole tires (including large ones) into rubber crumb without their preliminary cutting. In this case, the material holder may not be used or a holder of a different design is used.

Claims (4)

1. The method of grinding and cutting rubber by drilling, characterized by the use of drilling equipment to obtain crumb rubber, crushed rubber or rubber fragments by drilling the original raw rubber. 2. The method according to claim 1, characterized in that when grinding the rubber, a holder is used in the form of a box designed to hold the original raw rubber and made with the possibility of removal of crumb rubber or crushed rubber. 3. The method according to claim 1, characterized in that use a multi-spindle drill head. 4. The method according to claim 1, characterized in that automobile tires, including large ones, are used as the initial raw rubber.