SHOW PREVIEW | PLAST 2018
Right: Engel is producing PBT-LSR coupling cushions for rain sensors on a Victory 160 combi injection moulding machine
Bossi stand with mould solutions ranging from high-speed packaging to precision moulding. Silicone is a major focus for Engel at Plast 2018. In one demonstration it will produce coupling cushions made of PBT and liquid silicone rubber, which serve as windshield fasteners for rain sensors. using the Engel Combimelt process, these demanding dual-component parts will be pro- duced on a tie-bar-less Victory 200H/200L/160 combi injection moulding machine with an integrated Viper 40 linear robot. The 4+4 cavity mould for the parallel processing of PBT and LSR is by Rico of Austria. The all-electric LSR dosing system is a new devel- opment by Dopag of Switzerland, and the LSR for this application is from Wacker. Engel’s partner Mesgo is demonstrating the fully automated production of silicone membrane seals on an Engel Flexseal 500/300. The compact and energy efficient Flexseal machine was specifically adapted to the requirements of O-ring and flat seal manufacturers. In the production of very large volumes, the servo-hydraulic machine guarantees the highest efficiency and highest precision, says Engel.
Below: Sumitomo
(SHI) Demag is showcasing its IntElect all-electric machine series
In the demonstration, PBT inserts will be overmoulded with solid silicone and the compo- nents will be inspected by camera inline immedi- ately following production. The parts will be handled by an Engel Easix articulated robot, which, in this application, is being combined with an Anyfeeder for the first time. The Engel roto feeder will be used for the material feed. The rotating funnel with a counter-directional screw continu- ously transports the solid silicone, free of bubbles and at consistent pressure, to ensure a very high degree of process security. Italian partners for this
application are the tool makers ORP Stampi and Giasini, as well as Proplast Plastic Innovation Pole, which provided the CAD design. Sumitomo (SHI) Demag is presenting machines
from its all-electric IntElect series at Plast. Following the launch of the new IntElect series a year ago, the company says that 2018 sees the introduction of the IntElect S (Speed), designed for thin-walled parts, which runs with injection speeds of between 350 and 500 mm/s and cycle times of between 3 and 10 seconds. Compared with the standard IntElect machine, the high-performance model offers cycle time reductions by up to one second. In one packaging demonstra-
tion, Oval PP lids with a shot weight of 33.5 grams are produced on an IntElect S 180-700 with a clamping force of 1,800 kN complete with robot, protective housing and conveyor belt. The single-cavity hot runner valve gate mould is supplied by Incos Stampi. An SDR 5-15 speed robot removes
and deposits the parts on a conveyor belt. A lid is produced in cycle times of less than 5 s. An IntElect 130-450 with a clamping force of 1,300 kN represents the medical technology growth market, an important sector for Sumitomo (SHI) Demag. The production of a threaded POM rod for an insulin pen on a 16-cavity mould from KEBO will be demonstrated live. The mould temperature control system is from Piovan. With part weights of 1.57 grams and a shot weight of 25.12 grams, the cycle time is 10.6 s. Sumitomo (SHI) Demag is also showing the
production of a carabiner made of POM using a Polyplastics dual cold runner mould on an IntElect 50-110 which, with a clamping force of 500 kN, is the smallest machine in the series. To demonstrate its multi-component technol-
ogy, Wittmann Battenfeld will present an LSR application. On a SmartPower 120/525H/130L Combimould, a 2-component medical part will be produced, in which one component is a thermo- plastic material, the other liquid silicone. The parts will be manufactured with a 4+4-cavity mold supplied by the Italian company Silital. The parts will be removed and deposited on a conveyor belt by a W921 robot equipped with Wittmann’s new R9 control system. On an EcoPower 160/750 equipped with an insider cell, a coat hanger will be manufactured with a single-cavity mould from Haidlmair, using the Wittmann
56 INJECTION WORLD | May 2018
www.injectionworld.com
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