Sponsored By
Clare Goldsberry

May 3, 2016

2 Min Read
Sumitomo (SHI) Demag introduces energy-saving SEEV-A injection molding machines

Sumitomo (SHI) Demag (Strongsville, OH) has introduced advanced all-electric SEEV-A series injection molding presses in five model sizes from 50 to 200 U.S. tons. The SEEV-A series advances the company’s flagship SE-EV with new technologies, updated NC-10 control and enhanced Z-molding capabilities.

One of Sumitomo Demag’s newest advances is the algorithm-based S-Move technology, which replaces multi-step mold open/close speed settings with an optimized speed pattern that is both smooth (less vibration) and 18% faster. Combined with the SEEV-A’s fast clamp open/close speeds, this can significantly shorten cycle times, said Sumitomo’s information.

Additionally, SEEV-A users can realize significant energy savings thanks to energy-efficient, low-inertia motors and low-friction design improvements. The SEEV-A also offers savings such as reduced water and grease usage; faster start up; reduced scrap and downtime; quick color, resin and mold changeovers; minimized preventive maintenance; and the ability for unmanned and lights-out operations.

Sumitomo Demag also announced the SEEV-AHD series advanced, high-duty, all-electric machines featuring eight models ranging in size from 247 to 562 U.S. tons. The SEEV-AHD combines significantly increased specifications with advanced technologies, resulting in a substantially different mid-sized machine series with a number of features. It brings the precision, productivity and profitability benefits of all-electric injection molding machine technology to applications with larger, heavier and more complex molds, according to the company.

The SEEV-AHD efficiently handles higher injection requirements that typically would have been run on a hybrid or hydraulic machine, allowing bigger parts to run on smaller machines. The SEEV-AHD is engineered to provide a rapid return on investment through energy savings and other features.

For example, the thin-walled polypropylene medical dosing cup pictured here has a weight of 1.8 grams and runs in an eight-cavity hot runner valve-gate mold in a 202-ton SEEV-A press. The mold was built by Caco Pacific using proprietary conformal cooling in the cores and cavities. The mold includes a hot runner system from Gammaflux, with the option to mechanically shut off an individual valve stem. Multi-toggle clamp force control, a standard feature on the SEEV-A series, is used to improve venting of gases and reduce cycle time.

A clean molding environment, suited for medical applications, is ensured by grease-free tie bars, self-contained lubrication on the linear rails and automatic grease supply though a valve-type distribution system.

About the Author(s)

Clare Goldsberry

Until she retired in September 2021, Clare Goldsberry reported on the plastics industry for more than 30 years. In addition to the 10,000+ articles she has written, by her own estimation, she is the author of several books, including The Business of Injection Molding: How to succeed as a custom molder and Purchasing Injection Molds: A buyers guide. Goldsberry is a member of the Plastics Pioneers Association. She reflected on her long career in "Time to Say Good-Bye."

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