Injection unit

High injection performance and excellent process stability.

Excellent injection process control
The hydraulic ENGEL injection units score extra points with reliable control of the injection moulding process. Compared to conventional injection controllers, the „clamped system“ of injection plungers included in the standard version with the highly sensitive electronic controllers reacts extremely quickly to disturbing influences and any process-related changes. This guarantees excellent injection moulded parts and a high degree of reproduction accuracy. Control accuracy is even further improved by the electro-hydraulic variable capacity pumps included in the standard version. A servo-valve is available as an option (standard feature in the ecodrive option) for further optimisation of extremely low injection speeds.

Accumulator for high injection performance
Extremely high injection speeds of up to 600 mm/s are necessary to achieve the required quality of moulded parts with extremely thin walls. The required injection performance is provided by optional hydraulic accumulators. The injection process is controlled by a servo-valve.

Efficient plasticizing drive
The plasticizing drive is powered by a hydro-motor. These hydro-motors are available in three sizes for each injection unit. Besides the standard hydro-motor, a motor for higher speeds or higher torques is available as an option in each case. This enables the drive unit to be tuned with the respective plasticizing unit and moulding material to be processed, guaranteeing a high level of energy efficiency. With the selection of the corresponding hydraulic versions, the plasticizing drive can be operated parallel to the mould movements.

Tuned plasticizing unit
A range of barrel and screw configurations is available for optimal tuning of plasticizing with the respective application. The barrel is mounted on the injection unit by means of a quick coupling. The plasticizing unit is pressed torque-free against the mould; the required force can be set on the machine control unit.