High-speed PET Preform Injection Molding System Products > High-speed Injection Molding Machine for Packaging
High-speed PET Preform Injection Molding System
PET Preform Injection Molding System Delivers:
20% higher productivity
30% lower energy consumption
Three times longer mold life
Production efficiency up to 98%
99.8% pass rate of molded parts
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Clamping Unit
- Five-point toggle clamp with excellence in motion, good mechanical properties and preeminent safety performance.
- Accurate control of position and shot weight due to applying closed-loop servo valves to mold opening and closing, injection and ejection.
- Clamping unit force of preform injection molding system is transmitted from the middle of platen with stability, which is in favor of reducing the clamping force and saving energy.
- Higher strength and rigidity of clamping mechanism and enhanced dimensional accuracy of molded parts.
- Reduced resistance to the moving platen, enhanced the positioning accuracy and motion controllability, high-precision low pressure mold protection, prolonged mold life thanks to the non-contact tie bars.
- Proven bull gear for mold height adjustment with high reliability, compatible with different mold thickness.
- Two-stage high-thrust ejection mechanism of preform injection molding system ensures the parts can be ejected after cooled.
- The latest clamping unit structure delivers low clamping force and high injection pressure, and ensures the clamping force is applied to the mold evenly.
- Rigid cabinet-shape machine frame is made of thickened welded steel plates, with strong resistance to deformation. The machine frame can bear load uniformly and provide reliable support for high-speed mold opening and closing.
- Strengthened ejection mechanism, with larger ejector force and more parallel ejector rods, shortens the preform removal time and reduces the ejector plate deformation.
Injection Unit
- High response and no movement switching time thanks to the two-stage injection mechanism and cylinder-driven valve mechanism. Shortened cycle time due to highly-efficient synchronous plasticizing and injection.
- A new generation of screw that effectively reduces the AA content and IV value and achieves the maximum plasticizing efficiency.
- Linear rail type bearings, with less frictional resistance and accurate control of plasticizing back pressure.
- Italian PHASE motor-driven screw of preform injection unit molding system is used for plasticizing, which ensures continuous plasticizing, less energy consumption and over 30% of energy savings versus conventional hydraulic machines.
- The static mixer provides an even mixing of the plastic materials, facilitates uniform temperature of molten materials and contributes to the uniform density and stable properties of molded parts.
Hydraulic System
- High-reliability closed-loop hydraulic control system and imported hydraulic components based on pole assignment, with substantially increased stability and ease of maintenance.
- With German REXROTH variable displacement pump and HYDAC energy-saving accumulators, maximum system operating pressure is up to 180 bar and the machine motion is fast and smooth.
- Accumulator-driven machine movements with fast response and good repeatability.
- Precise control of every movement via the servo controller based on REXROTH servo solenoid valve.
- The oil return pipes of preform injection molding system are equipped with imported precise oil filters with increased flow. A separate oil tank cleaning system is added to ensure the normal use and longer life of hydraulic components.
- Water-cooled servo motor is applied to plasticizing, significantly reducing load on the motor and prolonging the motor life.
- At least 20% increased clamping and injection speed and considerably shortened production cycle after the upgrade of hydraulic system.
- Professional coolant used for motor cooling.
Electrical System
- GEFRAN industrial computer-based controller that can effectively improve and overlap the response time of movements and the resistance to communication jamming.
- The powerful electrical control system, with statistic process control (SPC) function, is able to maintain the alarm history, record the technological parameters in real time and restore the history data anytime, which greatly facilitates operational maintenance and production monitoring.
- Magnetostrictive position sensors with repeatability up to ± 0.001% of the stroke (a minimum of 2.5mm).
- The user company can establish a real-time monitoring system based on the results of remote communication diagnosis.
- Non-contact electronic feedback system to improve accurate response time and significantly enhance overall operational efficiency of the equipment.
Robotic System
- Servo-motor-driven robot of preform injection molding system has high response, high speed, reliability, stability and reduced preform removal time.
- The slide base is cast in integrated precise aluminum alloy with light weight and high hardness. REXROTH linear guide rails and decentralized lubrication system that is maintenance-friendly are adopted.
- Three-station cooling support plate to extend the preform cooling time, to ensure the part quality, to eliminate the stress of preform, to reduce the power consumption of system and to shorten the whole cycle time.