ENERGY MANAGEMENT | TECHNOLOGY
designed to optimise cycle time and energy requirements. The function knows when production is scheduled to start and when it will end, and from this point allows energy-efficient operation to be pre-programmed. In an example, Arburg says the EnergyAssist function makes it easy for the control- ler to heat up or deactivate the cylinder module and mould in a uniform, controlled and energy- optimised manner. Thermal decomposition of the material or damage to the hot runner can be prevented through use of the energy-saving switch-on and can reduce the machine’s overall carbon emissions. Arburg also developed aXw Control FillAssist which can help define injection parameters for the machine and process being run by creating a filling study based on the import of STL data. Its aXw Control MeltAssist function identifies the installed injection unit from a chip and uses the data to calculate parameters such as the utilisation level for plasticising and dwell times. The aXw Control CycleAssist function graphically compares the current times of each step in the process cycle against a programmed cycle sequence and the defined reference values in it. Unproductive time segments can be displayed and adjusted. This allows for high productivity to be programmable in advance, says Arburg. Arburg also developed “pilots” that bring adaptive process control and regulation into the control unit. The aXw Control ScrewPilot regulates the position of the screw to ensure a stable filling process, while its aXw Control PressurePilot makes mould filling more consistent and improves balancing to prevent burr formation and underfill-
ing. Arburg’s aXw Control ReferencePilot controls the holding pressure curve in real time using a pressure sensor in the mould, which can improve part quality, while its aXw Control FlowPilot combines a cooling water manifold close to the mould with temperature and flow control. This allows for the detection of variables that can interfere with cooling flow, such as clogged filters, colling channel deposits and kinked lines. Cincinnati Process Technologies (CPT), the
exclusive US agent for injection moulding machin- ery from Taiwan-based Asian Plastics Machinery, says that company’s Closed Loop Intelligent Servo system, offered as standard on its product lines provides energy savings of up to 80% versus systems with fixed displacement pump and savings between 20-40% when compared to systems incorporating a variable volume pump, says Michael Green, General Manager. The AP energy system combines a high response gear pump with
Above: Wittmann Battenfeld’s TEMI+ MES technology now has an energy
consumption tracking
module and a hydraulic unit performance indicator module
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IMAGE: WITTMANN BATTENFELD
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