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Keywords of this article:  medical 
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Sumitomo (SHI) Demag will present all-electric IntElect series at PLAST trade show.
Sumitomo (SHI) Demag will present all-electric IntElect series at PLAST trade show.

Sumitomo (SHI) Demag Plastics Machinery GmbH will turn the spotlight on the new IntElect series of all-electric injection moulding machines at PLAST 2018 in Milan. Applications will be demonstrated live on three exhibits between 29 May and 1 June. These exhibits will include two integrated system concepts with robots and a conveyor belt.

Exactly one year ago, the company introduced the second and, therefore, latest generation of IntElect all-electric injection moulding machines. When launched, this series encompassed five different models with clamping forces ranging between 500 and 1,800 kN.

In the opinion of Peter Gladigau, Product Manager at the company, the years dedicated to the development of the highly dynamic drives proved particularly worthwhile, and the conclusions he draws are extremely favourable. “40% of the machines we sold over the past 12 months were from the all-electric IntElect series, and that's well above the Euromap average of around 20% for all-electric machines.

In order to meet the demands of high-speed applications, 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.

High-speed packaging application with extraction robot and conveyor belt

Sumitomo (SHI) Demag will showcase the Speed version of its all-electric injection moulding machines in Milan with an exemplary application for the packaging sector.

Oval PP lids with a shot weight of 33.5 grams are produced for food packaging 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 srl.

The SDR 5-15 speed robot descends into the open mould from above and deposits the parts on the conveyor belt. A lid is produced at cycle times of less than 5 seconds, thanks to perfectly tuned system components.

“The newly developed high-torque drive motors achieve impressive dynamics on the axes, especially in high-speed medical technology applications or for precision engineering components,” says Gladigau.

In addition to this, the interaction of direct drives with dynamic brake energy storage enables energy savings of, according to the manufacturer, up to 20% when compared to other all-electric machines.

Live medical technology presentation: Threaded rod for insulin pen

An IntElect 130-450 with a clamping force of 1,300 kN represents the medical technology growth market at PLAST, a sector which is exceptionally important for the company.

Efficient zero-defect manufacturing achieved through precision and repeatability – keywords that the German-Japanese injection moulding machine manufacturer associates with this machine.

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 an excellent 10.6 seconds.

Compact, efficient, automated: Carabiners produced with the IntElect2 50/360

Furthermore, the company will demonstrate 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.

The current IntElect generation exploits all its design advantages in the system concept. SDR 5S robots, which are new in the SDR portfolio particular for small weights, and protective housings, a conveyor belt and downstream equipment are integrated in the smallest possible space in a compact machine, which is only 400mm wider than the standard model.

One minor, but important advantage should also be mentioned: CE conformity is confirmed for the entire machine and robot in a single declaration, thanks to this combined solution. A thermal imaging camera from Micro-Epsilon is integrated into the machine control system for inline process control. Parts are inspected based on stored target temperatures and rejected if necessary.

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