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Processing characteristics of Tire mould

May 10, 2017

Tire mold types have a lively mold, from the pattern circle, mold sets, the upper and lower side of the plate, the active mold to distinguish the cone-oriented mold and oblique plane-oriented mold. There are two halves of the mold, from the upper die, the lower mold two pieces. The following is a brief description of his processing technology: according to the tire mold drawing casting or forging blanks, and then rough cars and heat treatment. Mould on Tires Complete annealing treatment of tire die Blanks, elimination of internal stress, annealing should be put flat, to avoid deformation too large; according to the drawings to play the hoisting hole, and then according to the semi-precision car drawings will be the outside diameter and height of the pattern of processing, Mould on Tires with half a car program car pattern circle cavity, car finished with a semi-precision vehicle model With the processing of the tire mold pattern electrode to the pattern circle with EDM molding, with the model inspection, the pattern circle according to the requirements of manufacturers are divided into several parts, respectively, draw the marking line, put into the fixture back waist hole and tapping; According to the equal parts of the process 8, Mould on Tires align the cut To cut the pattern in accordance with the drawing requirements of the pattern to play light, clear angle, Qinggen, hit the exhaust hole, the pattern block cavity evenly sprayed sand, the color uniformity, the pattern ring, die sleeve, the upper and lower side plate combined assembly, Mould on Tires complete the tire mold.

Tire Mold Classification 1: The active mold, by the pattern circle, the mold sleeve, the upper and lower side plate composition. The active mold distinguishes the conical surface to guide the active mold and the oblique plane to guide the active Mold 2: Two halves the mold, from the upper mold, Mould on Tires the lower mold two pieces composes.

Tire Mould is an important tool used in tire vulcanization process, die in the use of the process will inevitably be rubber, coordination agents and the release agent used in the process of comprehensive deposition pollution (the main pollutant is sulfide, inorganic oxides, silicone oil, carbon black, etc.), Mould on Tires the repeated use of some patterns can cause pollution of dead zones. Therefore, we must regularly clean the mold to ensure the cleanliness of its surface, Mould on Tires in order to ensure the quality of the tire and die life, in view of this, the development of tire mold cleaning technology has attracted the attention of the industry.

There are two types of traditional cleaning methods for tire molds:

1.1 Mechanical Cleaning method

The use of manual emery cloth or steel wire physical grinding and dry sandblasting, according to the need to choose different combinations of cleaning. Mechanical cleaning method is a mature technology, Mould on Tires widely used in tire industry. This method has the advantages of simplicity, lack of equipment and tool requirements, but also has insurmountable defects: it will cause mechanical damage to die, shorten die life, sand blasting can easily plug the exhaust hole of the mould, and the work of dredging the exhaust hole after sandblasting is very heavy. Mould on Tires The mold must be disassembled, resulting in high labor intensity and long cleaning cycle.

1.2 Chemical Cleaning method

Chemical cleaning method mainly includes: organic solvent method, melting method, pickling method, alkali washing method and so on. These methods are easy to use and low in cost. However, the long-term use of the above method will cause mold corrosion, which directly affect the appearance and quality of the product, Mould on Tires while these pharmaceutical raw materials pollute the environment, damage the health of workers, must have a complete means of labor and pollution treatment equipment. At present, the law is mainly used in small rubber products enterprises.

With the development of science and technology, some new technologies have been developed and applied continuously. These cleaning technologies will bring "revolution" to the tire mould cleaning industry. But whether these higher-investment technologies can be accepted by the market still needs to be tested. Mould on Tires The following article will highlight the new technologies that have been used in the industry.

2. New Cleaning Technology

2.1 Laser Cleaning Technology

Laser cleaning technology is a new cleaning technology developed rapidly in the past 10 years, which replaces traditional cleaning technology in many fields with many advantages.

Laser cleaning technology refers to the use of high-energy laser beam irradiation on the workpiece surface, so that the surface of dirt, rust or coating occurs instantly evaporation or stripping, high-speed and effective cleaning object surface attachment or surface coating, Mould on Tires so as to achieve a clean process. It is a new technology based on the interaction effect of laser and matter, unlike traditional mechanical cleaning, chemical cleaning and ultrasonic cleaning (wet cleaning), it does not require the use of any CR jumper organic solvents that destroy the ozone layer, pollution-free, noise-free, Mould on Tires harmless to the human body and the environment, and is a "green" cleaning technology.

Laser cleaning in the mechanism of its use in the mold cleaning, is to use a clean substrate (also known as the matrix) and surface attachment (dirt) to a wavelength of laser energy, has a significant difference in absorption coefficient. The laser energy radiated to the surface is absorbed by the surface attachment, Mould on Tires which is heated or vaporized, or instantaneously inflated, and is driven by the steam flow formed by the surface, which is removed from the surface of the object and achieves the cleaning purpose.

Specifically for the tire mold cleaning, Mould on Tires the mold absorbs the specific wavelength of the laser, the energy is very small, will not cause damage, mold surface dirt (sulfide, inorganic oxides, silicone oil, carbon black, etc.) absorb a large amount of energy, be instantaneous expansion, Mould on Tires vaporization evaporation, with the surface of the mold, so as to achieve

The main methods of laser cleaning are:

1 Laser Dry cleaning method, that is, the use of pulsed laser direct radiation decontamination;

2 Laser + liquid membrane method, that is, first on the substrate surface Shen Ji Layer Liquid film, and then with laser radiation decontamination;

3 Laser + Inert gas method, that is, at the same time laser radiation, with inert gas to sweep the substrate surface. When the dirt is stripped from the surface, the gas is immediately blown off the surface to avoid contamination of the surface again.