Press Release 32/2008
On the spot: International introduction of the new BOY drive technology at the Fakuma
By presenting their new "E" series at this year's Fakuma, BOY met exactly the exhibition's motto and thus the necessity for increased energy efficiency.
The servo motor pump drive, which was displayed on the BOY 55 E in the BOY booth, controls the throughput rate of the hydraulic pump with variable speed by using an exterior gear pump.
Unlike customary electronically controlled variable displacement pumps that are driven by an asynchronous motor (regulating throughput and pressure via an internal pivoting angle), the servo motor pump drive shifts pressure control to a converter. The converter precisely controls the necessary pressure with variable speed and in an extremely dynamical way. When pump capacity is needed, the servo- motor only turns with the exact speed required for the set throughput rate. Otherwise the motor is idle and uses no energy. The motor restart is accomplished without delay and with full capacity.
The energy savings is about 50 % and equals the energy usage of electro-mechanically driven machines, but without the disadvantages such as wear, high investment, spare parts costs, and high connected load, et cetera.
The servo motor pump drive transfers only a small amount of heat to the oil, so the required amount of cooling energy is reduced to a minimum. The new drive technology reduces machine noise by 20 % and is 10 % faster and more dynamic. The relatively low extra costs of this investment pay off quickly.
The motto "energy saving" characterized BOY’s Fakuma presentation. "The numerous visitors we welcomed to our booth were intrigued by the new drive technology and the high potential for energy saving it offers", says Carl Schiffer, Managing Partner at BOY. Besides the "E" series (with the BOY 55 E and BOY 90 E injection molding machines) the manufacturer of injection molding machines below 1000 kN clamping force showed interesting applications with a high potential for savings.
With the patented Procan ALPHA® control, BOY presented the latest state-of-the-art control technology. The visitors were given impressive demonstrations of various possibilities this control offers for data transfer to CPUs or mobile phones. The easy to grasp, logically designed screen pages with little text and easily remembered symbols enable quick and intuitive operation via the Procan ALPHA®'s 15" full-touch display.
BOY put special emphasis on sprueless injection molding by demonstrating the technology on all the exhibits in their booth. As explained by Bernd Fischer, Director Process Engineering and Service, the user is offered a significant potential for savings without employing complex and costly technology. This was demonstrated with a BOY 90 M using a BC type hydraulically actuated needle shut-off nozzle for the production of Frisbees. No material melt was needed for the sprue, which meant less electricity and lower cooling capacity was required. Likewise, the energy and work-intensive process of handling was eliminated, including the possibility of refinishing the moulded part. Also, the regrinding and recycling of the material is no longer required when molding without sprues.
Three additional BOY injection molding machines with interesting applications were displayed in the booths of partner companies. This rounded out the successful participation of BOY in the well-attended Fakuma exhibition.
"With our exhibits, we were right on target regarding the current topic of energy efficiency, which was confirmed by the large number of visitors in our booth. In particular, we managed to convince many of those who are not yet our customers of the advantages of our technologies", stated Klaus Geimer, Director of Sales and Marketing, as he summed up the results of the exhibition.
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