Servo Motor in Medical Mold Provides Tighter Tolerances

With so much happening in a busy show year between NPE2018, Amerimold 2018 and IMTS 2018, MoldMaking Technology is revisiting some of the technology that was on display. In case you missed it: At NPE2018, Westminster Tool Inc. discussed its strategy to use a servo-driven motor as an alternative in an unscrewing mold, which enabled a medical customer to meet cleanroom demands.


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Westminster Tool Inc. designed and built a progressive, single-cavity unscrewing medical mold that uses a servo-driven motor for a customer’s medical device. The customer’s project—a surgical device that would be molded in a cleanroom environment—required a threaded core feature. The hydraulic power pack that is typically required for threaded cores did not meet cleanroom requirements because of the risk of contamination. Westminster Tool’s alternative solution uses a servo motor that integrates directly into the mold and provides tighter controls, greater accuracy and improved cycle time.

Westminster Tool is a complex injection mold builder specializing in medical, aerospace and consumer packaging. Westminster Tool was in the Maruka Toyo booth at NPE2018. As strategic partners, Westminster Tool and Maruka were co-located in Booth W1103.