Rubber Machinery: Towards Continual Automatic Energy Saving

During the “Eleventh Five-Year Plan” period, the domestic rubber machinery market may be slightly lower than the “10th Five-Year Plan”, but there is still room for development, and the international market has broad prospects. From 2000 to 2003, China imported more than US$500 million worth of rubber machines from abroad. Therefore, if the domestic rubber machinery industry strengthens the development of new products and improves product performance and quality, the market share will increase. From 2001 to 2005, the export value of rubber machinery in China increased year by year, which was 15 million US dollars, 20 million US dollars, 35 million US dollars, 50 million US dollars and 73 million US dollars. And with the increase in the number of domestic rubber machines, performance and quality, the increase will be strengthened. The development direction of several major varieties is as follows:

Tire machinery develops toward radial tire machinery

In 2005, the radialization rate of tires in China has exceeded 55%. According to relevant predictions, the meridianization rates in China in 2010, 2015 and 2020 will reach 70%, 82% and 84%, respectively. The radial trend of tires has become irreversible, so it is an inevitable trend for tire machinery to develop in the direction of radial tire machinery.

The modern radial tire equipment has two major features. First, it is highly mechanized, linked, automated, and intelligent. Second, it achieves high-quality, high-efficiency, and low-cost features, and these two features are constantly being strengthened. There are various types of radial tire equipment, which should mainly develop auxiliary equipment - large-scale internal mixers - auxiliary auxiliary machinery linkage lines, composite tread extrusion linkage production lines, steel wire cords linkage production lines, steel wire cloth cutting and splicing linkage production lines, and lined film linkage production lines. Traveler production line, semi-steel tire molding machine, steel tire three drums, four drums molding machine, tire shaping vulcanizing machine and tire testing equipment.

The development of pipe strips and lines in the direction of compounding and continuation

Pipeline strip rubber products traditionally use batch and step-by-step molding methods. It is difficult to ensure the homogeneity of product quality. At the same time, the production process is cumbersome and inefficient, making it difficult to produce rubber products of large length. Therefore, we should develop new technologies for compound and continuous pipe strip rubber products.

In order to improve the product performance and reduce the cost, pipe strips and strips are becoming more and more complex, which also brings higher requirements to the production process and equipment. Taking the flame-retardant conveyor belt as an example, an extruder can be used to continuously attach the upper and lower layers of glue to both sides of the skeleton layer to achieve a continuous compounding operation. The continuous compound conveyor belt blank body can then be sent to the continuous vulcanization production line. Compounding and continuous production.

During the “Eleventh Five-Year Plan” period, it is possible to continue to develop continuous production lines for pipe strip and strip products, such as steam pipeline hoses, cable continuous vulcanization production lines, shear head hot air continuous vulcanization production lines, and fluidized bed vulcanized sealant strip continuous vulcanization production lines. Rubber microwave hot air continuous vulcanization production line, wire and cable salt bath continuous vulcanization production line, roller head extrusion drum type vulcanized waterproof sheet continuous vulcanization production line, L-type head extrusion sheet continuous vulcanization production line, multi-drum type continuous vulcanization production line and Tape flat continuous vulcanization production line.

Molded products machinery to the development of injection molding machinery

At present, rubber molding is still widely used in the molding process, and it is difficult to further improve the quality. In addition, the process is complex, energy is wasted, and labor intensity is high. It is difficult to achieve linkage and automation, and production efficiency is low. The injection molding method can obtain high-density rubber products, greatly improving the mechanical and physical properties of the rubber products, and thus improving the service life and reliability of the products. Therefore, the development of rubber injection molding technology and equipment has become a top priority. Moreover, the two major development directions of energy-saving and circular economy have also provided tremendous impetus for the development from injection molding to injection molding. At the same time, they have also put forward higher requirements for high-quality, high-efficiency, low-cost and low-cost injection molding machines.

Currently used injection molding technology and equipment include plunger injection molding machine, screw reciprocating molding technology and screw reciprocating injection molding machine, screw plunger injection molding technology and screw plunger injection molding machine.

Extensive energy consumption equipment to energy-efficient energy consumption equipment development

Towards the development of high-efficiency energy In the past, heating methods used steam heating, which was inefficient. Some equipment now uses far-infrared heating, electromagnetic heating, and microwave heating sources, which significantly increase the heating efficiency and further reduce the cost of use. At present, domestic microwave technology has matured and equipment prices have been greatly reduced. Therefore, high-efficiency energy heating methods should be gradually adopted for rubber equipment.

The thermostatic control has been implemented for the current mixing equipment, extrusion equipment and calendering equipment using a closed-cycle heat source constant-temperature control method, but electric heating is suitable due to the small amount of heat energy required for its warm-up and short-time heating during operation. The hot water circulation control technology and devices, especially the direct electric heating and cooling type hot water circulation constant temperature control technology and devices are more ideal, not only saving energy but also saving a lot of cooling water.

Towards energy-saving development Because cold-feed extruders do not require the necessary equipment for hot-feed extruders such as smelters, melters, and conveyors, significant energy savings are achieved, and therefore cold-feed extrusion equipment should be developed. . Conventional stereotyped vulcanizers, especially large and medium vulcanizers, use steamer-type vulcanization, resulting in serious energy waste. The hot plate heating and vulcanization technology can save energy by 50% and should be widely promoted. Batch sizing equipment uses ribbed rotors for high energy consumption, while continuous smelting equipment uses threaded rotors (screws), which have a smooth effect on the rubber material, low shear, high efficiency, and can save energy by 50%. Equipment energy development direction.

The combination of mechanization, linkage, and automation in the direction of the combined equipment of mechanized, coordinated, and automated equipment can reduce the number of processes and unnecessary equipment. At the same time, the drive motor in the linkage device can easily find the energy balance point and should be the future direction of development. .

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