
- Show room at BOY
All BOY injection moulding machines feature fully hydraulic drive systems as well as specific construction characteristics. The E-Series features a very energy-saving and efficient servo-motor pump drive. Using this servo-motor pump drive, the positive properties of electro-mechanical machines were attained or even surpassed, without acquiring their disadvantages such as high investment and spare parts costs, more wear and higher connected load. Compared to machines with electronically controlled, displacement pumps, the drive's electricity consumption is cut in half. It is even below that of electro-mechanical machines.
The results from real life conditions are illustrated below.
The 50 % or more reduction in energy consumption clearly shows why the BOY E-series with the servo-drive is one of the most energy efficient machine available today.
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- Comparative measurements
The new drive technology also reduces noise levels and improves precision and dynamics. The diagram below shows a comparison of different drive concepts.
The servo-electric screw drive is available as an alternative drive system for all BOY injection moulding machines. Apart from the main advantage, which is metering simultaneous with opening of the clamping unit and ejection of the moulded part, the characteristics of the servo-electric screw drive are very little operating noise, low energy consumption, and improved material processing. Comparative tests clearly showed the savings potential of the servo-electric screw drive in comparison with a hydraulically driven screw motor: Cycle times could be reduced by up to 30 percent, due to the metering movements of the screw acting totally independently of the hydraulics! When compared to hydraulically driven screws, our tests show that the electric screw drive reduces energy by more than 30% per kg. of material throughput!