The traditional tire production technology has gone through a hundred years, and the traditional tire production technology is improving day by day. From rubber mixing, component preparation (calendering and extrusion), molding and vulcanization to finished product quality inspection, each stage has a high degree of automation. After everything has reached a certain historical height, it will be very difficult to continue to move towards higher goals. Therefore, in order to keep ahead in technology, tire enterprises must have unique process cheats, so let's take a look at what unique technologies these enterprises have.
0 1
First, Michelin C3M technology
C3M full name: command+control+communication &; Manufacturing; Command, control, communication and manufacturing integrated system.
C3M has the following five technical points: ① continuous low-temperature mixing; (2) directly pressing out the rubber piece; (3) weaving/winding the skeleton layer on the forming drum; ④ Pre-vulcanized annular tread; ⑤ Electrothermal vulcanization of tires.
The key equipment of C3M is special knitting machine and extruder. With the forming drum as the core, C3M technology can be realized by properly configuring special weaving unit and extrusion unit. Special knitting machine weaves seamless annular carcass ply and belt around the forming drum, and winds steel wire around the forming drum to obtain traveler. The extrusion unit continuously mixes rubber at low temperature (below 90℃) and extrudes rubber parts such as sidewall and triangular rubber strip.
The technological feature of C3M is that the parts do not need to be cooled/parked, nor need to be re-processed or pre-assembled, and they are directly sent to the building drum to complete the tire building at one time. During the forming process, the forming drum is always in a heated state, and the blank is presulfurized at the same time of forming to achieve the setting.
Michelin began to study C3M technology in 1982, and announced its success in 1992. The following year, Michelin established its first C3M factory in clermont-ferrand, where its headquarters is located.
0 1
Second, mainland MMP technology.
The full name of MMP is modularization? Manufacturing? Process; Building block molding method.
As we all know, the traditional tire production process consists of four major processes: ① shaping/mixing; (2) calendering and extrusion; ③ molding; ④ Vulcanization. Most existing tire factories are fully equipped with the above four procedures, except for the first procedure, which was omitted by purchasing some finished rubber compounds.
MMP broke the complete model of the four major processes in traditional tire factory, and divided the four major processes into two parts for operation. The first block includes the first step (molding/mixing), the second step (calendering and extrusion) and the first half of the third step (carcass molding), and the second block includes the second half of the third step (belt bonding and tread bonding) and the fourth step (vulcanization). The factory that performs the first production task is called "platform", and the factory that performs the second production task is called "satellite factory". The platform is responsible for the production and pre-assembly of tire basic components, and the satellite factory is responsible for the overall assembly and final vulcanization of tire manufacturing process. Usually, a platform can be configured with multiple satellite factories to form a radiation network.
In other words, the biggest feature of MMP technology is the new mode of "basic component factory+assembly factory". The platform (basic parts factory) is located in an area with low labor cost to reduce production costs; Satellite factories (assembly plants) are located in technologically developed areas or areas with strategic market position to ensure product quality and achieve the purpose of supplying finished products locally.
Platform products (basic components of tires) are standardized, that is to say, tires of the same specification, different brands and different series have the same basic components except tread and belt. The bodies on the platform have been presulfurized. According to the technical requirements of products, belts can also be installed on the platform.
The original idea of MMP was Bernadatte, manager of purchasing and strategic resources department of continental company. Hausmanr proposed that the project was approved at the end of 1993, the first full-scale MMP demonstration factory was put into production in Germany in June/996, and the MMP technology passed the review of the board of directors of mainland companies in early/997, which opened the curtain of global application.
0 1
Third, Goodyear's impact technology.
Comprehensive? Manufacturing? Accuracy? Assembly? Honeycomb? Technology; Integrated machining precision forming unit technology. If the abbreviation Impact is regarded as the word IMPACT, its English meaning is "collision, impact and influence". Therefore, some overseas media in the industry call Impact, which means a new technology that has an IMPACT on traditional manufacturing technology. Impact has four elements (also known as four units): ① Thermoforming machine (thermal? Before); (2) Improve control technology and increase production efficiency; ③ Automated material transportation; ④ Unit manufacturing. The above four elements can be used alone or in combination, and one element and the whole system can be closely combined with the existing tire technology. IMPACT will not be incompatible with existing systems like other new tire manufacturing systems.
0 1
Fourthly, Bridgestone ACTAS technology.
Bridgestone's advanced tire building technology ACTAS is the abbreviation of automatic continuous tire building system. Bridgestone/Firestone's factory in South Carolina, USA, adopted this new technology for the first time, with an investment of 435 million US dollars. Bridgestone said that the ACTAS system represents a breakthrough in the efficiency of Bridgestone's global factories. The goal is to build a factory with the best efficiency, quality and service in the world. The mandrel molding machine of ACTAS system is highly automated and adaptable, and no manual intervention is needed until the detection stage. After the final inspection stage, the tires return to the conveyor belt system and are automatically grouped according to the models and specifications. ACTAS technology has also improved the production of rubber compound, cord calendering, steel strip and bead, and optimized the material layout, making the mass production of tires more efficient. After the labor price rises, it is necessary to carry out automatic transformation of the factory, which is also an important step to strengthen the competitiveness of the factory.
0 1
V. Deng Lupu Digital Tire Technology
The so-called digital tire simulation technology refers to the realization of various simulation experimental technologies by simulating the rotating tire model in a supercomputer. It mainly consists of tire tread noise simulation, air pressure change simulation, steel wire external force absorption simulation, rubber formula simulation, wear energy distribution simulation, real vehicle driving simulation, gas infiltration simulation, tire muddy road simulation, road environment simulation and other technologies. Digital rotation simulation solves the shortcoming that high-speed rotating tires can not collect tire contact data, and shortens tire design and production cycle.
0 1
The intransitive verb Pirelli MIRS technology
The full name of Dapeng is: modularization? Comprehensive? Roboticization? System; Building block integrated automation system. The essence of MIRS is: organizing production with the forming drum as the center; Multiple groups of extruders cooperate with remote control manipulator to realize direct molding from rubber extrusion to molding drum; The airtight layer of embryo is used instead of capsule for vulcanization.
MIRS has only three processes: ① prefabrication; (2) forming; ③ Vulcanization. There are several extruders in the prefabrication process, and each extruder is equipped with a winding shaft frame with the specification of 1× 1.5m, and steel wires or impregnated cord rollers are hung on the winding shaft frame; Multi-strands of steel wires or cords on the frame enter the right-angle die of the extruder and are extruded together with the rubber compound to obtain the reinforcing rubber strip for the downstream process. The molding process consists of three groups of 8 extruders and three pairs of remote control manipulators, which are divided into three stations. The building drum is foldable and hollow. The drum body is made of eight aluminum plates with a thickness of 20mm, and there are small holes on them to make the drum surface communicate with the drum cavity. After preheating, the forming drum enters the first station and rotates around the shaft; The extruder extrudes the rubber compound onto the forming drum, and the manipulator repeatedly rolls the rubber compound to extrude air, so that the rubber compound clings to the drum surface to obtain an airtight layer; Because the drum head is hot, the rubber compound is presulfurized. Then the forming drum enters the second station,
The second pair of manipulators wound various reinforcing rubber strips produced in the prefabrication process on the forming drum, and at the same time, the second group of extruders extruded rubber onto the forming drum, and the manipulators and extruders crossed each other to gradually form carcass plies, beads and the like. Then the forming drum enters the third station,
The third pair of manipulators are attached to the prefabricated belt layer, and the extrusion unit directly extrudes the isolation rubber, sidewall rubber and tread rubber onto the forming drum, and then compacts and shapes them to obtain a complete tire embryo. The blank enters the vulcanization process together with the forming drum, and the vulcanizer is installed on the column of the six-station carousel. The first pair of manipulators put the tire blank that has not been taken out of the building drum into the vulcanizing machine, and then close the mold. High-pressure nitrogen is introduced into the cavity of the molding drum, and the nitrogen escapes to the surface of the drum through the vent holes in the drum wall, so that the green tire expands, thus leaving the drum surface and clinging to the inner wall of the vulcanizing mold, so that the pre-vulcanized green tire airtight layer actually plays the role of a capsule. Like ordinary vulcanization, steam is introduced into the mold cavity. 15 after vulcanization, the carousel arrived at the sixth station, and the second pair of manipulators opened the mold, took out the tire together with the building drum, and folded the building drum to obtain the finished tire. The barrel is assembled and sent back to the second process for recycling. At this point, a production cycle is completed.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.