PROCESSING
product update | Machinery PROCESS CONTROL
Purpose- designed purge guard
Lava-Shield is a new protective purge guard product from Shuman Plastics that is claimed to improve safety during purging of injection machine barrels. The paper-based
material is designed to absorb and then rapidly dissipate heat from purgings, while its non- stick surface allows the cooled polymer to be easily removed and recycled. Supplied in sheet form, the Lava-Shield material can be cut and folded as required and can be re-used as many as five times. The system is already being used at the Mahle Filter Systems plant at Murfreesboro, Tennessee, in the US, where the company operates 57 moulding machines. ❙
www.lava-shield.com
ASSEMBLY Rinco takes electric path
Switzerland-based Rinco Ultrasonics has introduced its first electrically- driven ultrasonic welding machine – the 20kHz Electrical Motion. The new machine is a develop- ment of its Dynamic 3000 system, which was especially developed for welding of medium to large thermo- plastic parts. Using electrical drive in place of
the traditional pneumatics provides much improved control of sonotrode positioning and applied weld force,
56 INJECTION WORLD | July/August 2015
the company says. For example, the ability to freely select sonotrode positioning can often allow the weld cycle to be shortened. Users can also select from eight different weld modes, opting to trigger the ultra- sonic signal by distance, force or time. The new welding machine is also equipped with an updated controller with 12-inch touchscreen. The control system uses a new graphical interface and application software. ❙
www.rincoultrasonics.com
www.injectionworld.com
KTW maintains recycled part quality using APC
Germany-based automotive components group Nifco KTW is using KraussMaffei’s Adaptive Process Control (APC) system to improve production quality of large PP components produced at its plant at Weissenburg, close to Munich. The company has been using the APC technology on its largest moulding machine – a 2,300 tonne KraussMaffei MX2300 – in production of wheel arch liners that it produces in a recycled PP. Production is challenging as variations in granule size, consistency and bulk density of the recycled material can result in viscosity fluctuations, which in turn impact on part quality. APC is integrated into the
MC6 machine control on the MX2300 machine. It measures a number of key parameters during injection of the polymer into the mould, calculating and
implementing adjustments to the pressure switchover point and the holding pressure profile to compensate for melt viscosity changes within the same shot. Nifco KTW has been using
the technology to modify the process with definable limits to maintain a consistent part weight. “The use of the APC
function enabled us to substantially improve continuous monitoring of melt quality, significantly reduce the subsequent rejection rate and guarantee precise traceability of the components down to the individual shot,” says Plant manager Albert Burghardt. ❙
www.kraussmaffei.com
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