Main Progress And Development Trend Of Mould And Plastic Machinery

1 the main development trend of plastic machinery is towards the development of composite structure, specialization, serialization, standardization, composite, miniaturization, large-scale, individualization and intellectualization.

Users can "combine and match" according to their own actual requirements.

In addition, focusing on the technical guidelines of energy saving and material saving, and meeting the needs of special materials and special purposes, we have developed many new equipment and special special equipment, such as low pressure injection molding machine, gas assisted molding machine, sandwich injection molding machine, thin-walled injection molding machine, structural reaction injection molding machine, ultra-high speed injection machine, injection compression molding machine, direct drive high-speed extruder, multi-layer extruder, reaction extruder, dynamic crosslinking reaction extruder, high-speed and high efficiency mixing twin screw extruder, extractable screw extruder, rubber extruder, electromagnetic dynamic extruder, biaxial stretching extruder, double wall hollow blow molding machine, CNC multi coordinate hollow molding machine, 3D hollow molding machine, etc.

In recent years, raw material molding technology and molding machinery are more closely matched.

The continuous improvement of raw materials and molding technology and high performance require the matching of molding machinery and peripheral machinery, and the progress of processing machinery promotes the improvement of molding technology.

Its development trend:

1) with the most suitable molding processing conditions as target, various control technologies and their height expert system, open loop and closed loop control are becoming more and more popular, and various high-performance screws are developed to develop multilayer composite molding equipment such as film, sheet and hollow products.

2) develop a fully electric injection molding machine with fine control, low noise and excellent performance.

Development and production of multi type, low volume, high added value injection molding machine and molding technology, such as 4 sets of mold automatic pposition injection molding device, a variety of molding products after injection, assembled in the mold assembly mold.

3) the processing machinery which can reduce residual stress, such as various low pressure molding or pressure forming processing machinery, the development of mold pressure control method, injection molding machine and so on is emphasized day by day (see Table 2).

4) multi material and multicolor molding machine, such as multi-layer special processing machine, sandwich injection molding machine, SP molding machine, recycling machine, hoop molding machine, soft and hard material integrated molding machine, etc.

5) the processing machinery for improving the performance of products, such as exhaust injection molding machine, vacuum injection molding machine, special injection molding machine for ultra-thin products, ultra-high speed injection molding machine, and hollow blow molding machine with crystallizing molding material, can improve the appearance, strength, weatherability, freshness and permeability of products.

6) develop machine tools suitable for on-line welding and surface modification, such as siphon (BSM) and mold temperature controllable injection molding machine.

7) develop energy-efficient plastic dehumidification equipment to prevent material from drying and dehumidifying at 100 degrees Celsius.

8) with the rapid development of electronic, information, electrical, medical, and production industries, the demand for microcomputers is increasing.

Internationally, we have successfully developed an injection molding machine with a mass of 1/10000 grams, an extruder with a diameter of 1mm and a blow molding machine with a volume of 3ml.

It is understood that some developed countries are studying replacement of human blood vessels diameter less than 0 5mm plastic extruder; Japan is developing 1/100000 grams of plastic injection molding machine.

9) large scale plastic machine is also one of the current development directions.

At present, 8000KN injection molding machines for car body panels have been developed abroad. The plastic pipes and 2000mm extruders of 10M and the hollow molding machines with large capacity of 5000L have begun to put on the market.

10) personalization is another hot spot in the development of plastic machines at present. For example, moving and rotating injection molding machines, large injection molding machines with small clamping force or large clamping force, small injection volume, mixing and injection molding equipment, extruded production lines equipped with special peripheral devices, wood plastic blending molding equipment, and highly mechanically dispersed, target oriented, energy saving, space saving and low temperature processing machines have been developing rapidly.

2. Mold and die play an important role in the forming process.

In recent years, computer aided design (CAD), computer aided manufacturing (CAM), computer aided analysis (CAE) and computer simulation analysis software have been popularized and developed in the process of design and manufacture of moulds and dies.

Thereby improving the accuracy of the mold and greatly reducing the production cycle.

In addition, in terms of material quality of moulds and dies, new developments of special steel, aerated metal and non-ferrous metals will also be made more progress.

3. About the metrology, control and evaluation methods, the precision of CAE analysis software, the widely applied technology has also made great progress, and by simulation, the products can be correctly designed.

Physical property measurement technology and measuring instruments were further established.

The automation control technology of plastic machinery industry has developed to a fairly high level. Automatic control of equipment units, closed loop control of parameters, process intermodal pportation, on-line feedback control and other electronic computer technology have been widely applied in plastic processing. At present, the development of intelligent control plastic machine has made unmanned operation, unmanned workshop and unmanned factory realize.

In recent years, the striking evaluation method is based on the visualization phenomenon, and the material can be directly observed from the solid to molten state, mixing and dispersing action in the machine barrel, thus greatly promoting technological reform and technological progress.

Visualization has been applied in injection molding, extrusion and hollow molding. There will be more progress in the application of visual analytical technology to the evaluation of molding properties.

In terms of physical property evaluation of materials, the way of direct connection with production lines and the practicability of real-time control methods will also be further developed.