The need to move in each injection cycle in full accordance with the given motion profile places strict requirements on the positioning accuracy of the valve actuator. The required performance was achieved through direct drive technology (pin is directly placed inside the motor rotor and controls the valve without additional mechanical connections) and a high precision encoder as a position feedback sensor. Such absolute encoder allows positioning mechanisms of molding machine and molds with an accuracy of 0.01 mm and flexibly control their speed and acceleration.

Kinegge engineers were faced with the task of creating an electric valve actuator that does not require a significant increase in the cavity for its placement in the mold compared to hydraulic cylinders of the same force. To achieve this goal, Kinegge engineers have developed a unique design of a compact and lightweight direct drive, mounted on the hot runner manifold coaxially with the valve gate.

For reliable operation when mounted on a manifold, a cooling unit was built into the design of the actuator. Taking into account usually moderate quality of the shop cooling water, the possibility of easy cleaning of the built-in cooling channels was provided as well. A special temperature resistance test was conducted in Kinegge lab which showed that the actuator can operate safely under hot environmental conditions.

Electrical roller screw actuator, unlike pneumatic and hydraulic systems, does not require additional energy conversion to run the compressor and does not consume energy during pauses in operation, which reduces the cost of consumed electric energy by 3-4 times.

The standard solution for the actuator connection is one cable for power signals and a second cable for sensor signals. To simplify the design, Diakont engineers have implemented a single cable interference-resistant actuator connection. This simplifies the wiring and installation of cable lines and reduces labor and cost.