At NPE2009, Ube Machinery Inc. took the wraps off its S-V series of all-electric injection molding machines, featuring improvements to make them greener, quieter and more efficient.
Ube showed an S-V with 720 tons of clamping force. The press will dry-cycle throughout the show.
A new rigid platen design on wide platens cuts deflection 60 percent, allowing processors to use a smaller injection press to mold parts. That also saves energy, said David Bernardi, senior sales and marketing manager. He outlined features of the new all-electric in an interview before the show at the company's U.S. headquarters in Ann Arbor, Mich.
Ube Machinery is a subsidiary of Ube Industries Ltd. of Ube City, Japan. Bernardi said Japanese customers scrutinize competing presses in great detail for issues beyond performance, including energy consumption and how much noise the machine generates. All-electrics run very quietly, especially compared with hydraulic presses, but noise is still an issue in Japan, where a factory could be next to a residential area, he said.
The S-V sports a quiet design, with features like an electric-powered safety gate instead of a pneumatic-powered gate. That also eliminates the cost of energy to produce compressed air, Bernardi said. Newly designed ball screws require 90 percent less grease.
In another change, the injection unit now moves on linear guides, which Bernardi said reduces friction for faster cycles and lower energy use.
Ube engineers have developed a high-response servo system to cut energy costs and deliver energy faster. We are using the next generation of digital motors and fiber-optic feeds, Bernardi said.
Like other all-electrics, the S-V uses no hydraulic oil and no cooling water.
Also at NPE in Chicago, Ube announced multishot technology called Cavi-Mold, which uses a turning mold.
Ube also is beefing up its services to buyers of used machines, which have increased as a result of the economic downturn. Ube is contracting with buyers to remove, rig and re-install the used presses at their plants. Ube also can provide rebuilding and retrofit services by bringing a machine to its Ann Arbor factory. By the time it hits their floor, it's ready to run, Bernardi said.
Ube has purchased some of its own used presses, remanufactured and updated them in Ann Arbor and resold the machines at a fraction of the cost of a new press. It's the silver lining in the clouds of the 'injection recession,' Bernardi said.
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