Tire is one of the main parts of the car, it is the only contact with the road. With the use of wheels, to bear the car driving, turning, shock absorption, braking and control tasks. The current generation of cars, performance continues to improve, and equipped with original tires, are biased towards comfort and durability. Tire mold as tire processing of the most important one of the molding equipment, its quality requirements are getting higher and higher.
For the curing of various types of tires die. Tire mold classification 1: active mold, by the pattern circle, 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.
Mold is an important tool used in tire vulcanization process, the mold in the course of the inevitable use of rubber, with agents and vulcanization process used in the release agent of the integrated deposition of pollution (the main pollutants are sulfide, inorganic oxidation Material, silicone oil, carbon black, etc.), repeated use will cause some patterns of pollution dead zone. Therefore, it is necessary to regularly clean the mold to ensure the cleanliness of the surface in order to ensure the quality of the tire and the life of the mold, in view of this, tire mold cleaning technology development industry attention. Tire molds There are two traditional cleaning methods: 1.1 mechanical cleaning method, the use of artificial sand or steel wire physical grinding and dry sandblasting, 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 operation, the equipment and tool requirements are not high, but there are also insurmountable defects: will cause mechanical damage to the mold, shorten the life of the mold; sandblasting easy to plug the mold exhaust hole, The work of the stomata is very large. Must be removable mold, resulting in high labor intensity, long cleaning cycle. The same time as
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, so as to achieve a clean process. It is based on the laser and material interaction effect of a new technology, with the traditional mechanical cleaning method, chemical cleaning method and ultrasonic cleaning method (wet cleaning process), it does not need to use any damage to the ozone layer CR Li Xin organic solvents, No pollution, 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, 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. The same time as
(Sulfur, inorganic oxide, silicone oil, carbon black, etc.) to absorb a lot of energy, is instantaneous expansion, the mold surface, Vaporization, away from the mold surface, so as to achieve the effect of cleaning. The same time as
2) laser + liquid film method, that is, first in the substrate surface deposition of a layer of liquid film, and then use laser radiation decontamination; 3 (1) laser dry cleaning method, that is, the use of pulsed laser direct radiation decontamination; ) Laser + inert gas, i.e., the surface of the substrate is purged with an inert gas while the laser is irradiated. When the dirt from the surface after stripping, will be immediately blown away from the surface of the gas to avoid surface contamination again.