Machine Design

Valve-Gate Actuators

ServoGate electric linear actuators target valve-gate control systems in the molding of large and complex plastic parts.

They are designed to replace hydraulic or pneumatic systems used in valve-gate control, including sequential valve gating. Actuators produce 500 lb of continuous force, are water cooled to operate at 400°F, and have a cycle life of less than a half second for a 3/4-in. extend. A magnetic encoder is built in. The design is integrated, not a belt-coupled/reverse parallel (RP) design, with separate motor and servoactuator components. These devices use Axiom Plus PV brushless servocontrollers/drives.

Tol-O-Matic Inc., 3800 County Rd. 116, Hamel, MN 55340, (763) 478-8000,

TAGS: Technologies
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