KraussMaffei gears new moulding machine to packaging demands
By Barry Copping
Posted 21 June 2012
KraussMaffei MX 650+, teamed here with a linear robot
Injection moulding machine builder KraussMaffei offers its MX 650+ model to meet the specific needs of the packaging industry in terms of high cavitations and heavy moulds.
Injection rates of up to 700 mm/s are possible, and the machine satisfies the demands for high flexibility in mould variant management according to the company.
The MX650+ is cited as coping with different mould installation heights and extremely heavy moulds up to 13,500kg. It thereby attains highly precise platen parallelism and an even clamping force distribution for reliable operation with large moulds containing many mould cavities.
The new machine size extends the clamping force rating spectrum of the MX series below the MX 850, hitherto the smallest machine. Optional bracing of the centre platen on the machine bed relieves pressure on the tiebars and mould guides when stack moulds are used, says Krauss Maffei. Company spokesman Paul Caprio says: "Multi-cavity moulds are used primarily for screw closures and sealing caps, and very short cycle times are demanded. The MX 650+ specifically complies with these demands and offers high performance with a compact installation area”.
According to Krauss Maffei, the new machine is characterised by a very high plasticising capacity, and energy efficiency from the electric screw drive. HPS-UN plastification, configured especially for the polyolefins used in the packaging industry, is said to produce high specific melting capacities and a uniformly high melt quality at low melting temperatures. The dynamic qualities of the clamping unit are therefore fully exploited, says the company, with the processor benefitting from short cycle times, even quality of moulded parts and long-term production security. For additional mould functions such as stack ejectors or core pullers, "high flow" valves with a parallel function are available independently for every stack so as to ensure rapid demoulding of the parts.
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