Technical article
Is the servo drive worth it?
The world is spinning faster every day - this also applies to the cycle times of industrial productions. A forward-looking way to keep up with the speed is the use of servo-electric drives for rotational and linear movements in your injection molding tool. But where exactly are the advantages of modern drive concepts and for whom does the investment particularly pay off?
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Automation in every step of the process.
The feeding of insert parts into your tool by robot, complex rotational movements in the injection molding process, or the removal of parts: Servo drives are used wherever movements in or on injection molding tools need to be carried out.
This includes mainly movements of individual tool components as well as translational or rotational movements of individual or multiple plates up to the complete tool half. Special movements, such as the axial movement of shut-off nozzles of hot runner systems, can also be executed precisely. The required forces and speeds, as well as other relevant process parameters, are crucial for the development of an automation concept, which form the basis for all planning and calculations for the respective application in the end.
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Deformation of various types of threads
in the production of screw caps in the packaging industry
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Precise demolding of fine threads
Thread sizes from M2 with tightest cavity spacings.
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Linear movements on core shapes
translational movement of slide units
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Turning of form plates (index plates)
or the entire tool half
More speed, more precision, more control.
Modern requirements demand more control and efficiency throughout the injection molding process - in the future, the performance of your machines must be increased, and your capacities may need to be expanded. Clear advantages of servo technology include the Speed, precision, and energy-efficient operation. The servo-driven processes take place at a high speed, repeatedly and precisely, and do not require hydraulic operating pressure to be maintained constantly, as power is only consumed during movement.
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Digital control units enable secure process monitoring and application possibilities that go beyond just controlling a systemFor example, process parameters can be easily configured, the operating state of the machine monitored, and the tool and process optimized during operation by intelligent control units.
A gain in cleanliness
Despite technological advancements, a significant portion of translational and rotational movements in injection molding tools are still carried out by hydraulic, pneumatic, or mechanical components.
On the one hand, the size of the tool can pose a space problem in certain areas due to a significantly larger structure with racks. However, hydraulic solutions also carry the risk of particle contamination in manufacturing, making them unsuitable for use in all cleanroom classes. Only with considerable additional effort such as enclosing the hydraulic blocks or using special FDA-approved hydraulic oils is the application possible.
By using servo-electric drives in the tool, not only a more compact, but also a clean, oil-free, and safe application under clean room conditions is possible. Various users can benefit from this, including producers of food packaging or medical components, for example.
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Servo-electric tool systems are ideal for cleanroom production.
Realizing competitive advantages with specialized servo technology.
The switch to servo drives initially involves costs and often requires a rethink, moving away from familiar processes. However, from the medical and pharmaceutical sector to the beverage industry, more and more businesses are implementing servo-electric drive concepts in their injection molding tools. The high international competitive pressure is omnipresent, so that every gain in quality, cleanliness, precision, and efficiency can mean a crucial advantage. By using an external control of the servo drives, you also keep all optimization and expansion possibilities open for the future.
To get the adjustment screws right from the start, companies should turn to servo technology providers specialized in injection molding processes, who can not only supply components but also fully support projects from consultation to commissioning. Only then can the automation concept be tailored to your application to deliver optimal results today and tomorrow. The world will keep turning - so let's turn with it.