SERVO UNSCREWING DEVICES Overview
HIGH PERFORMANCE UNSCREWING DEVICES FOR MULTI-CAVITY MOLDS
The servo unscrewing device “multi“ (SAM) is our answer to the demands made on high perfor- mance injection molds with unscrewing function: • Highest precision and process reliability • Shortest cycle times and highest availability • Clean and oil free operation => Cleanroom suitable • Long service intervals and maintenance friendly design • Compact design - no protruding parts
In Servomold system solutions servo-electrical drives are used exclusively. The advantages of these drives are mainly the control of the angular position of the motor shaft and the controllability of the speed, acceleration and deceleration. Thus an outstanding positioning is achieved. In connection with a planetary gearbox a drive unit is formed, which is perfectly suited in terms of torque and speed for the use in injection molding tools. The Servomold threaded core technology is based on a separation of the forming components of the torque steer from the drivetrain. The spur wheel and thread core are guided freely movable by a splined shaft – radial driving forces are absorbed through thin section bearings at the spur wheel. Simultaneously, the rotational movement of the spur wheel is transferred via the splined shaft to the threaded core and enforced by a guide thread nut a helical motion which corresponds to the pitch of the form thread.
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