Development of injection molding machine industry

The robotic arm of an injection molding machine is an automated production equipment that can simulate some functions of the human upper limbs and automatically control it to transport products or operate tools according to predetermined requirements. Chinese plastic processing plants in the coastal areas of South and East China are showing increasing interest in robotic arms, but the penetration rate of injection molding machine robotic arms in the domestic plastic machine industry is less than 10%. The robotic arm can ensure consistency in the operating cycle, improve quality, and be safer. With the rapid development of the plastic processing industry in China, the automation level of injection molding equipment is also increasing. Modern injection molding machines are often equipped with robotic arms to improve production efficiency. The quantity of injection molding machines exported and imported in China is basically the same, with around 15000 units, but the import value is 920 million US dollars and the export value is 350 million US dollars. Precision injection molding machines are mainly foreign brands, and the bidirectional stretching PET, membrane unit, and precision medical catheter extrusion unit in extrusion equipment have also been the territory of foreign companies. It is necessary to develop domestically produced precision injection molding and extrusion equipment with independent intellectual property rights. On the one hand, it can replace imports and also enable China to occupy a position in the high-end international plastic machinery market. Traditional plastic machinery still has certain potential in energy conservation, as previous designs often only focused on the production capacity of a single machine. In the design of energy-saving plastic machinery, production speed is no longer the most important indicator, but the energy consumption per unit weight of processed products. Therefore, it is necessary to optimize the mechanical structure, control mode, and operating process conditions of the equipment based on minimum energy consumption.
With the rise of energy conservation and consumption reduction as a national strategy, the issue of energy conservation in injection molding machines has also received widespread attention. There are two mature ways to save energy in the field of conventional injection molding machines: frequency converters and servo motors, among which servo motors are increasingly widely accepted.
The servo energy-saving series injection molding machine is equipped with a high-performance servo variable speed power control system. During the molding process of the injection molding machine, different frequency outputs are made for different pressure and flow rates, and precise closed-loop control is carried out for the pressure and flow rate, achieving high-speed response and optimal matching and automatic adjustment of the servo motor to the energy requirements of the injection molding machine.
1. Adopting high-performance servo controllers, servo motors, and other energy-saving devices.
2. Sensitive servo control system, quick start reaction time only needs 0.04S
3. The servo motor and hydraulic system form a closed-loop control system, which greatly improves the repetitive accuracy compared to traditional models
4. Reduce the impact of mold opening and locking, and extend the service life of mechanical components and molds
5. Reduce the use of electricity, and under ideal working conditions, this model can achieve a power saving efficiency of 20% -80% compared to traditional injection molding machines
6. The system generates much lower heat than traditional injection molding machines, saving about 30% of cooling water usage and extending the service life of oil circuit seals and hydraulic components
7. The noise during the entire operation is low, which is significantly reduced compared to traditional injection molding machines