Utilising Energy Efficiently
At the K trade fair Baumüller is presenting its range of products and services for more energy efficiency in the plastics industry
Rising raw material prices and worldwide scarcity of resources mean that machinery manufacturers are focusing more and more on energy-efficient technologies. At K 2010, the international trade fair for plastics and rubber, Baumüller is displaying its products and solutions for a better energy balance with high productivity and availability.
Increased cost-effectiveness throughout the entire life cycle can be achieved with the high-torque motors in the DST series from Baumüller. The compact generation of motors scores with a wide torque range of up to 32,000 Nm and boasts high levels of efficiency even in the partial load range. The excellent running concentricity of the drives ensures high product quality, for example in extrusion or in calendering. Axial forces of up to 800 kilonewtons support thrust bearings, which can be integrated as optional.
Like the DST motors, the servo motors in series DSC and DSD being exhibited feature good running concentricity and energy-efficient power input. In addition, they have a high level of overload withstand capability and can be operated with virtually no cogging torque. The optional water cooling system of the drives in frame sizes 71 and 100 gives the machinery manufacturer greater flexibility in machine design and doubles the power density compared to the uncooled version of the drive.
Another trade fair highlight for optimising energy utilisation is Baumüller's servo pump concept. The benefits of hydraulic power transmission and that of electrical power control by means of servo technology are now combined: a servo drive regulates the speed of a fixed-displacement pump dynamically and with a high level of accuracy. Features of this solution include not only high efficiency but also minimal generation of heat and noise, plus high precision. Compared to conventional approaches it is possible to save up to 30 per cent of drive energy in this way, and even up to 80 per cent in phases with very low power demand.
Accurate matching of the drive to suit the particular power demand of the application is another step towards ensuring efficient operation: with the peak load and rated load devices b maXX 4600 and b maXX 4700 Baumüller is showing at the K trade fair how the drive concept can be made more efficient when drives have to produce peak output briefly or maximum output in continuous operation. Optimally sized, the devices allow much faster clock cycles and far higher productivity for plant and machinery, in injection moulding for example.
Baumüller Anlagen-Systemtechnik, a subsidiary, is supplementing the product portfolio on show with custom sheet metal and wiring solutions.