At Fakuma this year, Wittmann Group (B1-1204) is highlighting the efficiency and performance of its array of offerings, said Rainer Weingraber, the CEO at Wittmann Battenfeld GmbH, including energy-efficient injection molding technology.
What does Wittmann expect from the show this year? "What we really like about the Fakuma show is the time we spend with our customers," said Michael Wittmann. "We enjoy the — sometimes very technical conversations — with them and the discussions give us the opportunity to learn from them as well about their needs, the product requirements and more. Having these high-level, high-quality conversations with our customers is an important part of being here."
But it also works the other way around, Weingraber added. "By showing our customers our new products, our innovations such as our energy-saving possibilities, we give them impulses, perhaps trigger them to think about lowering their CO2 footprint by buying energy-efficient equipment. We are looking forward to some awesome, good discussion."
At the stand, there is a path that guides visitors along all the exhibits, explained Weingraber.
In addition to all-electric machine models from the EcoPower and MicroPower series, a servo-hydraulic SmartPower with an electric injection aggregate will also be shown for the first time.
The machine, a SmartPower B8X 120/350H/130S with an electric injection unit, will be producing a bottle opener made of PC and TPE, using a mold supplied by FKT Formenbau und Kunststofftechnik, Germany, with a W918 robot from Wittmann and a conveyor belt integrated in the work cell. The robot inserts the metal parts fed from a magazine into the mold, where they are overmolded with polycarbonate. The resulting base body is subsequently passed on to the second station by a rotary unit and there overmolded with TPE to give it a better grip. The finished parts are then deposited on the conveyor belt of the Insider cell.
"We have a very compact robot and conveyor belt integrated into the work cell — something that is in very high demand with our customers — and we strongly believe this solution will fit the need of the market," said Weingraber.
Visitors to the booth will also be able to see Wittmann's new vacuum solution for linear robots, called EcoVacuum, which reduces compressed air consumption with a demand-based vacuum control, particularly when handling inserts or molded parts with a smooth surface. Following vacuum buildup, the Venturi nozzle will only come on again before the negative pressure becomes too low to hold the part safely in place. The vacuum limit values can be calculated individually for each specific part and controlled with Wittmann's r9 control system.
"Compressed air is the most expensive form of energy in most production plants," said Michael Wittmann. "And the r9 control system allows a completely free, programmable, definable vacuum level per circuit, allowing us to achieve potential savings of up to 80 percent compressed air consumption." Available for all Wittmann robots, it will be demonstrated with a Primus 128 robot.
Wittmann will also be displaying its further evolution in the use of DC energy as a power source for injection molding systems. Last year, the company showed a machine with a robot operating on direct current. This year, the temperature controller, too, can run on energy from the machine's DC intermediate circuit. Further DC-compatible auxiliary appliances are planned.
The EcoPower B8X 180/750 DC Insider cell with an integrated WX142 robot in DC version from Wittmann and a DC-compatible Tempro plus D temperature controller will be molding the housing of a plug-in connector for DC technology using a two-cavity mold supplied by Harting of Germany.
A finished connector of this type made by Harting is built into the machine and used to connect the Tempro plus DC appliance. Power is supplied by an ecological salt battery technology on a sodium-nickel basis from innovenergy. The battery has a total capacity of over 45 kWh, more than sufficient for uninterrupted machine operation throughout an entire eight-hour trade fair day. In addition, electrochemical capacitors, known as supercaps, will be used to complement the sodium-nickel storage units by balancing out short-term load peaks.
An energy-efficient EcoPower B8X 110/525 will also be running at the stand, producing dart tips made of POM, using a 32-cavity mold supplied by Hasco of Austria equipped with a pneumatic needle shut-off nozzle. The parts will be removed by a Wittmann robot and subsequently fed to a tubular bag system supplied by Ravizza Packaging of Italy for packaging.
Finally, the company will be displaying its microinjection molding capabilities. The MicroPower, designed for injection molding micro and nano parts, comes with a two-step screw-and-piston injection aggregate able to inject thermally homogeneous melt with shot volumes ranging from 1.2-6 cubic centimeters. This makes it possible to manufacture parts of outstanding precision in a maximally stable production process with minimal cycle times.
Another highlight is the liquid silicone processing application running at the booth of Austria-based Nexus Elastomer Dosing and Nexus Elastomer Molds (A6-6222), where an EcoPower B8X 110/350 LIM featuring an eight-cavity series production mold equipped with a Nexus "Timeshot" needle shut-off system will manufacture LSR piston stoppers for disposable syringes. These will be subsequently assembled fully automatically.