New electric press uses fast linear drive. (Keeping up with Injection molding).A new high-speed linear servo An electromechanical device that uses feedback to provide precise starts and stops for such functions as the motors on a tape drive or the moving of an access arm on a disk. motor developed by Toshiba Machine Co. Ltd. is incorporated into a new press that was shown at the recent IPF (Itanium Processor Family) See Itanium. show in Japan. Aimed at thin-wall applications, the EC 100 Linear (110 U.S. tons) reportedly achieves injection speeds up to 2000 mm/sec. The unit will likely cost up to 30% more than a standard servo-driven electric unit. Toshiba plans to roll out the model sometime this year. Toshiba has more than 15 years producing linear motors for machine tools and is adopting that technology to injection molding injection molding n. A manufacturing process for forming objects, as of plastic or metal, by heating the molding material to a fluid state and injecting it into a mold. . So far, only Fanuc Ltd. has offered an injection press with a linear motor. Toshiba's linear motor reportedly reacts 30 times faster than a standard rotary servo motor. It goes from a standstill to peek injection speed in 0.02 sec, and positioning is said to be accurate to 0.2 mm. The linear motor can also carry out pack and hold functions for at least 10 sec with no adverse affects. Nozzle An orifice in an inkjet print head through which ink is sprayed onto the paper. Print heads with six thousand or more nozzles are common in today's printers. Nozzle touch force is 6 tons, while max. injection pressure is 36,275 psi. Molders unfamiliar with programming and operating an electric press can now operate any Toshiba EC all-electric model as if it were a hydraulic machine hydraulic machine, machine that derives its power from the motion or pressure of water or some other liquid. Hydraulic Engines Water falling from one level to a lower one is used to drive machines like the water wheel and the turbine. by using the new N-series controller. The software operates similarly to Toshiba's V21 hydraulic press hydraulic press Machine consisting of a cylinder fitted with a piston (see piston and cylinder) that uses liquid under pressure to exert a compressive force upon a stationary anvil or baseplate. The liquid is forced into the cylinder by a pump. controls. For example, the injection speed can be ramped up or down from point to point rather than inputting a sequence of precise speed steps. The hydraulic simulation can be turned off when not needed. Tel: (847) 593-1616, www.toshiba-machine.com |
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