FITCHBURG, MASS. — Sumitomo Heavy Industries Ltd. has joined the parade of Japanese injection press makers to offer all-electric technology.
Sumitomo, through its U.S. operation, SHI Plastics Machinery Inc. of America, used the recent MassPlastics show in Fitchburg to introduce its all-electric machine to the U.S. market.
SES-series machines are run by alternating-current servo motors.
Sumitomo is offering the SES press in clamping forces of 33-385 tons. Machines in 33, 55, 83 and 198 tons use direct drives, with no belts. The company uses belts to drive presses in the two largest sizes, of 308 and 384 tons.
Sumitomo is using its double-toggle clamp design on the SES. The double-toggle clamp has appeared on more than 9,000 Sumitomo high-speed machines, the SG and SGM series, according to Jerry Boggs, vice president of SHI Plastics Machinery in Norcross, Ga.
Sumitomo gains a cost advantage because it makes its own electric servo motors and amplifiers, Boggs said.
The AC servo motors have full closed-loop control and digital sensors, giving SES presses good speed, precision and energy efficiency, the company claims.
Contact SHI at tel. (770) 447-5430, fax (770) 441-9168.