Tire mold classification: active mold, by the pattern ring, mold sets, the upper and lower side plate composition. Active mold to distinguish the conical guide active mold and oblique plane oriented active mold 2: two molds, by the upper mold, the next two pieces of the composition.
Tire mold is an indispensable tool in tire vulcanization process, Mould on Tires whether the mold structure is reasonable to the quality of the tire is essential.
The structure of the tire mold is divided into two molds and live molds. Tire half mold structure is relatively simple, mainly on the lower side of the board and the upper and lower steel ring, the upper and lower side of the sub-surface in the tire pattern on the center line, the mold work, the lower mold open. Mould on Tires The structure of the active mold is complicated, which is mainly divided into two parts: the cavity plate and the mold shell. The cavity plate is a part which is directly in contact with the tire tire. There are mainly blocks, upper and lower side plates, upper and lower steel rings. The shell is the guide mechanism of the mold, used to control the opening and closing movement of the mold, mainly in the mold sleeve, bow seat, cover, base, wear plate, guide bar, installation ring, lifting block, mold action, And the block to do radial opening and closing movement.
Tire Molds There are two traditional cleaning methods:
(1) mechanical cleaning method
The use of artificial sand or steel wire physical grinding and dry sandblasting, Mould on Tires according to the need to use a different combination of cleaning. Mechanical cleaning method is a mature technology, widely used by the tire industry. The method has the advantages of simple and easy operation, but it can not overcome the defects: it will cause mechanical damage to the mold, shorten the life of the mold; sandblasting is easy to plug the mold exhaust hole, Mould on Tires Stomatal work is very large; must be removable mold, resulting in high labor intensity, long cleaning cycle.
(2) chemical cleaning method
Chemical cleaning method mainly includes: organic solvent method, melting method, pickling method, alkali washing method.
These methods are easy to use, low cost, but long-term use of the above method will cause mold corrosion, which directly affect the appearance and quality of the product; Mould on Tires the same time, these pharmaceutical raw materials pollute the environment, damage the health of operators, must have a complete means of labor insurance and pollutants Processing equipment. At present, the law is mainly used for small rubber products business.
With the continuous development of science and technology, some new technologies have been developed and applied. These cleaning techniques will bring "revolution" Mould on Tires to the tire mill industry that is of concern. But these high investment technology can be accepted by the market, need to be tested.
The following will focus on several new applications that have been industrialized.
2. New cleaning technology
(1) laser cleaning technology
Laser cleaning technology is a new type of cleaning technology that has been developing rapidly in the past 10 years. It has gradually replaced the traditional cleaning process in many fields with many of its own advantages.
Laser cleaning technology refers to the use of high-energy laser beam irradiation surface of the workpiece, so that the surface of the dirt, rust or coating instantaneous evaporation or stripping, high-speed removal of the surface of the object to clean the surface or surface coating, Mould on Tires so as to achieve a clean process. It is a new technology based on the interaction between laser and material. Unlike conventional mechanical cleaning, chemical cleaning and ultrasonic cleaning (wet cleaning), it does not require any organic solvents that destroy the ozone layer, No noise, harmless to the human body and the environment, is a "green" cleaning technology.
Laser cleaning uses a clean substrate (also known as the parent) and a surface attachment (dirt) for a certain wavelength of laser energy, with a very different absorption coefficient. Radiation to the surface of the laser energy, most of the surface attached to the absorption, so that the heat or vaporization evaporation, Mould on Tires or instantaneous expansion, and by the surface of the steam flow to drive, from the surface of the object to achieve the purpose of cleaning.
Specifically for tire mold cleaning, the mold absorbs a specific wavelength of the laser, the energy is very small, will not cause damage, mold surface dirt (sulfide, inorganic oxide, silicone oil, carbon black, etc.) absorb a lot of energy, Vaporization, away from the mold surface, so as to achieve the effect of cleaning.