Thursday, October 3, 2024
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Actuator Without Active Cooling Reduces Energy Consumption

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Actuator Without Active Cooling Reduces Energy Consumption

With HRScool Evo, hot runner specialist Oerlikon HRSflow has developed a system in which the hydraulic cylinder that positions the pin does not require separate, active water cooling. Depending on the system size and application, this can reduce energy consumption at the drops by up to 10%. In addition, the low number of components reduces the assembly and maintenance time. This innovative technology, which contributes to more sustainability in injection moulding, can replace conventionally cooled designs in a variety of applications across a wide temperature range.

As high-precision actuators, the cylinders of hot runner systems are crucial components for continuously trouble-free process control. In conventional systems, water cooling ensures that the optimum working temperature is maintained. With HRScool Evo, a thermally insulating air gap towards the cavity reduces both the heating of the cylinder and the thermal loss of the manifold. In addition, a cover made of a highly heat-conductive material on the opposite side ensures optimum heat dissipation towards the cold clamping platen. For perfect matching, the height can be adjusted via telescopic supports, enabling outstanding heat transfer and thermal uniformity over the entire hot runner system to maximise part quality. Thanks to the high efficiency, the more complex water-cooled systems can be replaced in many cases without compromise.

Says Massimo Rossi, R&D Director at Oerlikon HRSflow: “Thanks to the concept used, HRScool Evo has a wide range of market applications, including the automotive and the packaging industries. Apart from energy efficiency, one of the most important advantages is the elimination of all pipes and connections required for water cooling. Where these are not present, they cannot become clogged or corroded. The ability to remove the actuators while the needles remain in the hot runner system also reduces maintenance. And because the reduction to one thermally insulating and one thermally conductive element enables a compact design, small cut-outs in the clamping plate are sufficient.”

For further information: www.hrsflow.com

 

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