ATT
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i SINGLE Alternating Temperature Technology Alternating Temperature Technology Variotherm temperature control used in combination with suitable mould inserts allows variations in temperature of more than 100 °C in critical areas or in complete moulds. In order to achieve this, the SINGLE ATT system operates with two separate circuits that contain thermal fluid with a different temperature. Both ATT circuits contain the same fluid. Water is recommended for temperatures of up to 200 °C, while oil is suitable for applications that operate with temperatures of up to 300 °C. Areas of application ▸ Injection moulding of thermoplastics ▸ Production of components made from fibre-reinforced composites ▸ Other cyclic processes with temperature profile Standard equipment General SINGLE ATT ‘Alternating Temperature Technology’ is an individually configured system solution for liquid-operated variotherm temperature control of injection moulds, compression moulds and other mould types. As the active system fills moulds alternately with warm and cold thermal fluids, it can actively heat or cool processes in defined alternation. ▸ Temperature control system with one heating and one cooling circuit and circuit switch ▸ Fast alternation between heating and cooling circuit thanks to hydraulic switching ▸ Energy-saving temperature-controlled feeding of return fluid into the corresponding circuit ▸ Easy operation with touch screen ▸ Connection to standard moulds ▸ Rugged, powder-coated steel sheet housing Hydraulics ▸ High-quality materials and reliable components ▸ Wear-free flow metering and flow monitoring ▸ Hose connections between system and valve station Electric and control equipment ▸ ▸ ▸ ▸ Programmable logic controller with touch screen Heating control by solid state relay with fail-safe pilot contractor Electronic safety temperature limiter Switch box to IP54 Remote control via remote touch screen or via Ethernet-based PC Connection for 20 mA current loop (TTY) Hose connections between valve station and mould Data logging via integrated USB interface SINGLE Temperiertechnik GmbH, Ostring 17-19, 73269 Hochdorf /Deutschland, Tel: + 49+497153/3009 - 0, Fax:Fax: +(0)7153/3009 - 50, 50, www.single-temp.de SINGLE Temperiertechnik GmbH, Ostring 17-19, 73269 Hochdorf /Germany, Phone: (0) (0) 7153/3009 - 0, + 49 49 (0)7153/3009 - www.single-temp.de

i Cycle-based control The system is equipped with up to four external valve stations for switching the two circuits from bypass mode to mould temperature control mode. User-defined time setting and free selection of maximum or minimum temperatures per mould section allow the energy consumption of the temperature alternation process to be optimised. Signals for the switch-over from cooler to warmer medium are transmitted by the machine control via programmed I/Os according to process requirements. More efficiency through contour-aligned cooling channels Valve station Temperature control...

Benefits of ATT for injection moulding processes Variotherm mould temperature control has a variety of benefits that positively affect processes, part surfaces, part strength and the cost-efficiency of production processes. ATT ▸ prolongs the holding pressure even in areas that are away from the gate and helps reduce injection pressure and clamping force, ▸ decreases internal stress during compression moulding of thick-wall optical components, ▸ enhances surface properties such as self-cleaning or antireflection coating, the reproduction of microstructures and nanostructures as well as the...

i SINGLE Alternating Temperature Technology Mould temperature Alternating Temperature Technology 1 Open mould 2 Remove part 3 Close mould 4 Injection 5 Holding pressure 6 Open mould (next cycle) Heating period Cooling period Cycle time of ATT Alternating Temperature Technology vs. cycle time of standard system Heating capacity heating circuit Cooling capacity cooling circuit Maximum flow rate Maximum outlet pressure (Characteristic maximum values) Valve station supply Pump capacity Valve station outlets Cooling water supply Dimensions Approximate weight SINGLE Temperiertechnik GmbH, Ostring...