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- Time：2018-04-13
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[Summary]A few days ago, it passed the acceptance inspection hosted by the Jiangxi Provincial Science and Technology Department in Nanchang. The successful development of this project has laid a solid theoretical and experimental foundation for promoting the advancement of my country's injection molding technology and improving the gas-assisted injection molding process for plastic products companies.
[Summary]A few days ago, it passed the acceptance inspection hosted by the Jiangxi Provincial Science and Technology Department in Nanchang. The successful development of this project has laid a solid theoretical and experimental foundation for promoting the advancement of my country's injection molding technology and improving the gas-assisted injection molding process for plastic products companies.
- Categories:Industry News
- Author:
- Source:
- Time：2018-04-13
- Visits:0
A few days ago, it passed the acceptance inspection hosted by the Jiangxi Provincial Science and Technology Department in Nanchang. The successful development of this project has laid a solid theoretical and experimental foundation for promoting the advancement of my country's injection molding technology and improving the gas-assisted injection molding process for plastic products companies.
Experts believe that the project takes the lead in conducting relatively mature theoretical and experimental research on gas-assisted injection molding at home and abroad, and establishes a mathematical model of the filling process of gas-assisted injection molding for three-dimensional thin-walled parts. The gas injection control system software for gas-assisted injection molding has strong practicability. It can discover the molding process defects in advance by simulating the injection molding process. At the same time, on the independently developed experimental equipment, the key factor of gas-assisted molding-the formation and influence of the air cushion film layer was experimentally studied, and the gas-assisted extrusion of different section dies under different process parameters and different physical parameters A three-dimensional, non-isothermal viscoelastic numerical simulation was carried out, and various field distributions were obtained. The gas-assisted injection molding experimental device established on this basis successfully realized gas-assisted extrusion, with a large gas-assisted pressure control range and a small relative error.
In addition, the project conducted theoretical and experimental research on the CAE analysis of the filling and flow process of the gas-assisted injection molding process, as well as the molding process and product formation defects, and obtained the apparent and internal quality of the gas-assisted injection molding product and the structure of the gas-assisted injection mold. , The regular relationship between operating process parameters and raw material physical parameters, and then put forward guidelines that can be used to guide mold design, process route formulation and operation, and develop gas injection devices and corresponding control systems, and put forward variable integral- Incomplete differentiation-multi-modal intelligent PID tracking control algorithm with dead zone. Experts pointed out that the research results of this project have reached the international advanced level, and the gas-assisted injection molding machine should be further improved to realize the industrialization as soon as possible. Studies have shown that, compared with the traditional process, the application of this gas-assisted technology reduces the pressure drop of the die during production by 20% to 30%, and the extrusion expansion rate drops from 10% to 28% to less than 1%.
At present, the gas-assisted injection molding device and technology have been put into operation in many plastic products enterprises in Jiangxi Province, and the effect is obvious. It can produce thin-walled products with complex processes with traditional injection molding machines, and has become an updated product of traditional injection molding machinery technology transformation. .
