servo-info2

Elisa Foltyn
2021-03-26T13:45:25+01:00
Motion Arena
Baum��ller

Example: Injection molding machine

The principle of servo-hydraulics can be very well illustrated in the example of the cycle of an injection molding machine. The manufacturing of plastic cups or bottle stoppers consists of six steps: plasticizing, dosing, injecting, molding, cooling and demolding. These production steps are highly differentiated, meaning that within one process step the injection molding machine has widely fluctuating output requirements. Closing and injection sequences require large quantities of hydraulic oil and a high volumetric flow. Cooling times, on the other hand, require no or just minimal output.

The difference in energy consumption between the three systems presented is clearly visible in the graphic. The high energy efficiency of the servo-hydraulic solution arises from a needs-specific pump output. When the machine is at rest, e.g. during cooling, then the motors will also be at rest and will consume no energy.

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