New linear motor controls contact rolls.A new permanent-magnet motor from Siemens AG Siemens AG German electrical-equipment manufacturer. The first Siemens company, Siemens & Halske, was founded in Berlin in 1847 to build telegraph installations. in Germany Germany (jûr`mənē), Ger. Deutschland, officially Federal Republic of Germany, republic (2005 est. pop. 82,431,000), 137,699 sq mi (356,733 sq km). greatly simplifies control of contact rolls in high-speed film winding. The German parent of Bruckner Inc., Greenville, S.C., applied for a patent on this use of the motor. Bruckner's first Liwind system with this motor was installed last August at Manuli Film SpA in Italy on a 10-meter-wide BOPP line. Siemens' linear motor is shaped like a plank roughly I meter long x 10 cm high x 20 cm wide. It has electrical windings on a rectangular rec·tan·gu·lar adj. 1. Having the shape of a rectangle. 2. Having one or more right angles. 3. Designating a geometric coordinate system with mutually perpendicular axes. core and a permanent magnet that slides back and forth over the windings. This simple, compact motor replaces a combination of several hydraulic and pneumatic cylinders The term air cylinder can also refer to a gas cylinder used to store compressed air, including those used for scuba diving. Pneumatic cylinders (sometimes known as air cylinders plus a damping damping In physics, the restraint of vibratory motion, such as mechanical oscillations, noise, and alternating electric currents, by dissipating energy. Unless a child keeps pumping a swing, the back-and-forth motion decreases; damping by the air's friction opposes the unit to position the contact roll, control contact pressure, and compensate for roll dancing. The Liwind motor and a new super-light contact roll can regulate contact pressure from 10 to 400 N/m with 0.01N/m resolution. Tel: (864) 234-7111 * PT Direct: 343TF [ILLUSTRATION OMITTED] |
|
||||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion