Small-machine supplier Boy Machines Inc. is offering its first electric screw drive, now available on all Boy A-series injection presses.
Boy, based in Exton, Pa., is the U.S. headquarters of Dr. Boy GmbH of Fernthal, Germany. The family-owned company had been committed to fully hydraulic injection molding machines.
George Dallas, national sales manager, said that whether a customer needs a servo-electric screw drive depends on the specific molding demands.
“For typical applications, our standard hydraulic drive is equally efficient and more economical. But a growing number can benefit from the added precision of our more complex servo-screw drive,” he said.
Because it runs independently, an electric screw drive operates simultaneously with the clamp and ejector functions.
Boy said that is especially attractive when a large volume of resin must be plasticized at low rate of screw revolutions per minute.
Since the screw-recovery portion of the injection cycle consumes the most power, the company said, the electric drive provides energy savings and reduced cycle time.
The new screw drives' advantages include quieter operation, better melt homogeneity and more efficient melt processing with less shear, according to the company.
Boy will show the new electric-screw-drive presses at NPE 2003, set for June in Chicago.
The A-series includes clamping forces of 14.2, 33.7, 60 and 100 tons.
Tel. (610) 363-9121, fax (610) 363-0163, e-mail [email protected]