Analysis of three energy-saving technologies of PET preform injection molding machine

1. Heat recovery and intelligent temperature control system
Technical principle: PET preform injection molding machine captures waste heat during the injection molding process (such as residual heat of melt glue and heat dissipation of hydraulic system), and uses algorithms to dynamically optimize mold temperature to reduce energy consumption of continuous heating.
Implementation method——
Waste heat recovery device: Adopt three-stage heat exchange technology to convert waste heat into energy for workshop heating or preheating raw materials, with a thermal efficiency conversion rate of 87%.
Dynamic temperature control: Deploy sensor network to monitor mold temperature in real time, predict heat loss through deep learning, adjust power 0.8 seconds in advance, and achieve temperature control accuracy of ±0.5℃ (traditional PID is ±7℃).

2. Servo power and hydraulic system optimization
Technical principle: Use servo motors to replace traditional asynchronous motors to achieve "energy supply on demand" and eliminate idling loss of hydraulic system.
Servo dynamic pressure regulation: The pressure sensor array matches the clamping requirements in real time, with an output accuracy of 0.1MPa to avoid overpressure energy consumption.
Multi-axis synchronous control: Through multi-axis collaboration, the mold opening and locking speed is increased by 50%, the injection speed is doubled, the cycle is shortened and the standby energy consumption is reduced.
Energy-saving effect: The energy consumption of the hydraulic system is reduced by 40%, and the energy consumption of the all-electric model with a digital servo valve is more than 50% lower than that of the hydraulic press.

3. Lightweight and material innovation technology
Technical principle: Reduce the amount of materials from the source of bottle blank design, and introduce recyclable/bio-based materials to reduce the overall energy consumption chain.
Multi-layer co-injection technology: Through precise shielding layer distribution, material consumption is reduced by 30%, while maintaining the strength of the bottle body.
Energy-saving effect: The energy consumption of lightweight bottle blank production is reduced by 15%-20%, and it meets the requirements of carbon emission reduction. Coating technology helps the workshop ambient temperature drop by 5-8℃ and the air conditioning energy consumption is reduced by 18%.