Views: 55 Author: Site Editor Publish Time: 2022-09-09 Origin: Site
With the compounding of the extruder, its mechanical properties are bound to be more complex, the supporting control system is also complex, and the control precision is also higher. Therefore, how to design a suitable control system to ensure its economical, safe and reliable operation, so as not to become an outdated or transitional product in a short period of time, is a problem that our engineering designers must consider. In the control of the multi-compound extruder, the bus technology and network structure are simple and the technical performance is stable, which not only greatly reduces the amount of wiring, facilitates installation, debugging and maintenance, but also greatly improves the flexibility and reliability of the system. While being advanced, it has also achieved good social and economic benefits.
Here is the list
Advantages of Extrusion
Modularization and specialization of extruder design
Epilogue
Extrusion molding is an efficient, continuous, low-cost and wide-ranging processing method, but it is mistakenly believed that extrusion molding is a low-precision, low-value-added molding method. With the increasing market demand for various high-precision products such as optical fibers, medical catheters, audio-visual film bases, photographic negatives, and projection films, the market demand for a series of high-precision products continues to increase. Requirements are also increasing. For some special processing and molding, such as the processing of some dangerous and toxic substances, reactive extrusion processes, etc., it is necessary to strictly control the process parameters such as temperature, pressure, material residence time and its distribution, as well as the heat transfer between the reaction material and the outside world. It is often impossible to use ordinary extruders, and precision extrusion molding machines provide the necessary equipment conditions for various complex reaction extrusion processes. In terms of high-speed precision equipment, there is still a big gap between domestic manufacturers and the world's advanced level. Experts believe that there is still a gap of 15-20 years between the actual level and the processing level of high-yield extrusion equipment and foreign advanced levels. There are also significant gaps in real-time process and product parameter monitoring and the adoption of advanced control technology. Advanced high-precision online testing instruments mainly rely on imports. There are very few domestic products, and the gap with foreign products is more than 10 years. On the whole, my country's precision extrusion molding equipment is still in its infancy, and there is still a lot of room for development.
"Modular" production can adapt to the special requirements of different users, shorten the research and development cycle of new products, and strive for a larger market share; while "specialized" production can arrange the fixed-point production of various system module components of extrusion molding equipment, and even can global production. Purchasing is very beneficial to ensure the quality of the whole machine, reduce costs and speed up capital turnover.
Since the advent of pin-type cold-feed extrusion technology, extruder manufacturers at home and abroad are still exploring new extrusion technologies. But so far, whether it is MCTD and gear pump extrusion technology, or other extrusion technologies, although they all have certain advantages, they are not dominant in terms of increasing production, reducing glue and reducing energy consumption. On the contrary, due to the complex structure and difficult maintenance, it is difficult to be accepted by users, and does not have the advantage of scale in actual use. In the field of extrusion technology in the future, pin-type cold feed extrusion technology will still lead the trend. At the same time, my country's composite extrusion technology is becoming more and more perfect, which can fully meet the various needs of different users.
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