1 The main development trend of plastic machinery is toward the development of combined structure, specialization, serialization, standardization, compounding, miniaturization, large-scale, individualized and intelligent. Users can "combine and match" according to their actual requirements. In addition, we have developed many new types of equipment and special special equipments, such as low-pressure injection molding machines, gas-assisted molding machines, sandwich injection molding machines, and thin-wall injection molding machines, around the technical guidelines for energy conservation and material saving, and the need to meet special materials and special applications. Structural reaction injection molding machine, ultra high speed injection machine, injection compression molding machine, direct drive high speed extruder, multilayer extruder, reaction extruder, dynamic crosslinking reaction extruder, high speed and high efficiency mixing twin screw extrusion Machine, extractable screw extruder, rubber extruder, electromagnetic dynamic extruder, biaxial stretching extruder, double wall hollow blow molding machine, CNC multi-coordinate hollow molding machine, three-dimensional hollow molding machine, etc.
In recent years, the combination of raw material forming technology and molding machinery has become closer. The continuous improvement of raw materials and molding technology and the high performance require the matching of molding and processing machinery and peripheral machinery, and the advancement of processing machinery has promoted the advancement of molding processing technology. Its development trends:
1) Various control technologies aiming at the most suitable molding processing conditions and their high-level expert systems, open-loop and closed-loop control are becoming more and more popular, and various high-performance screws are designed to develop films, sheets, hollow products, etc. Layer composite molding equipment.
2) Development of all-electric injection molding machines with fine control, low noise and excellent performance, electric injection molding machines for electric and hydraulic pressure. Development and production of multi-variety, low-volume, high value-added injection molding machines and molding technology, such as 4 sets of mold automatic transposition injection molding equipment, a variety of molded products after the injection, the assembled mold of the product assembled in the mold.
3) Processing machinery that can reduce residual stress, such as various low-pressure molding or processing machines suitable for pressure forming, in-mold pressure control methods, injection molding machines, etc., have been paid attention to (see Table 2).
4) Multi-material, multi-color molding machines, such as multi-layer special processing machine, sandwich injection molding machine, SP molding machine, recycling special machine, hoop molding machine, soft and hard material integrated molding machine, etc.
5) Processing machinery for the purpose of improving product performance, such as vented injection molding machine, vacuum injection molding machine, ultra-thin product special injection molding machine, ultra-high-speed injection molding machine, and crystalline molding material hollow blow molding machine, can improve the appearance of the product, Strength, weather resistance, freshness preservation, barrier properties, etc.
6) Develop processing machinery suitable for on-line welding and surface modification, such as optimal siphon injection molding machine (BSM) and in-mold temperature controllable injection molding machine.
7) Develop energy-efficient plastic dehumidification equipment to prevent technical problems such as discoloration and performance degradation when the material is dried and dehumidified above 100 °C.
8) Microcomputers With the rapid development of electronics, information, electrical appliances, medical care, production and other industries, the demand is increasing. Internationally, an injection molding machine with a mass of one tenth of a gram has been successfully developed, an extruder with a pipe diameter of 1 mm and a hollow blow molding machine with a volume of 3 ml. It is understood that some developed countries are studying plastic pipe-extruding machines with a diameter of less than 0 5 mm that can replace human blood vessels; Japan is developing an injection molding machine with a mass of one hundred thousandth of a gram.
9) Large-scale plastic press is also one of the current development directions. At present, 8000KN injection molding machines for car body panels have been developed abroad; 2000mm plastic pipes and 10M extruders and hollow molding machines with a capacity of 5000L are also on the market.
10) Personalization is another hot spot for the development of plastic presses, such as movable and rotatable injection molding machines, large-area small clamping force or large clamping force, small injection volume injection molding machine, mixing and injection Using molding equipment, extrusion line equipped with special peripheral equipment, wood-plastic blending processing equipment, and various machines for high-mixing and dispersing, and energy-saving, space-saving, low-temperature processing are all faster. development of.
2 The mold and die occupy an important position in the 痹诔尚图庸㙠process. In recent years, computer aided design (CaD), computer aided manufacturing (CaM), computer aided analysis (CaE), and computer simulation analysis software have been further popularized and developed in the design and manufacture of molds and dies. Thereby improving the precision of the mold and greatly shortening the production cycle. In addition, in the material of the mold and the die, the newly developed special steel, aerated metal, non-ferrous metal, etc. will also make more progress.
3 惫赜诩å±ä¿Š15. 刂 beer (2) Lancome ÇŽ ÇŽ CaE analysis software precision, widely used application technology has also made great progress, and through simulation, can correctly design products. Physical measurement technology and measuring instruments were further established. The automatic control technology of plastic machinery industry products has been developed to a considerable level. Electronic computer technology such as automatic control of equipment unit, closed-loop control of parameters, process intermodal transportation, online feedback control, etc. are widely used in plastic processing. The development of plastic machines enables unmanned, unmanned workshops and unmanned factories to be realized. In recent years, the remarkable evaluation method is based on the obvious phenomenon of visualization. The movement of materials in the barrel can be directly observed from solid to molten state, mixing and dispersing, which can greatly promote process reform and technological progress. . Visualization has been practical in injection, extrusion, and hollow molding, and there will be more progress in the evaluation methods for forming processing characteristics in the future. Regarding the physical property evaluation of materials, the direct connection with the production line and the practical use of the real-time control method will be further developed.
PVC wall panel,white pvc wall sheet,wall panel board pvc,plastic wall panel
ZHENHAO BUILDING MATERIALS CO.,LTD , https://www.zhpvctile.com