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WITTMANN BATTENFELD with high-tech injection molding machines and peripherals at the Chinaplas in Shanghai
WITTMANN BATTENFELD at the Chinaplas 2016 in Shanghai
The Asian market contributes substantially to the success of the WITTMANN Group and, due to its potential, is an important market of the future for the company. In China, the WITTMANN Group is present not only with its own sales organization, but also with a production plant in Kunshan, where robots, temperature controllers, material loaders and granulators are manufactured, primarily for the Asian market.
At this year’s Chinaplas in Shanghai, WITTMANN BATTENFELD will demonstrate its competence in the area of injection molding machines with two models from its PowerSeries.
On a MicroPower 15/10, which has been specially designed for the injection molding of small and micro parts, WITTMANN BATTENFELD will show an opto-electronic application. A barrel holder made of POM will be produced with a mold supplied by Wittner, Austria. This component is a focusing device used mainly in cameras to hold the lenses in place or to focus them. The internal thread of the barrel holder is produced with the help of a threaded core operated directly via the ejector of the injection molding machine. This means that the threaded core is unscrewed directly inside the mold, before it is removed by a WITTMANN W8VS2 robot specially designed for this machine model, then presented to a camera integrated in the production line and the machine’s control system for quality inspection, and finally deposited in a collecting box separated according to cavities. The production process is realized under clean-room conditions achieved by means of a Laminar FlowBox inside the machine.
The MicroPower stands out by its innovative two-step injection unit, consisting of a screw and a plunger, with a shot volume ranging from 0.05 to 4 cm³, which enables the injection of thermally homogeneous melt, with the result of premium-quality parts from absolutely stable production with short cycle times.
The second model on display will be a servo-hydraulic machine from WITTMANN BATTENFELD’s SmartPower series. By the example of a SmartPower 120/525, the company will show, among other things, the integration of robots and peripheral equipment into the control systems of injection molding machines, known as WITTMANN 4.0. The machines as well as the connected robots and peripherals are linked up with each other via a uniform Windows user interface, which enables the individual appliances to interact with each other. In this way, the entire production process, including material loading and blending, temperature control, automation and injection molding can be optimally coordinated and traced. The machine is also equipped with the HiQ-Cushion function (to control the melt cushion). This function is able to counteract trends in the residual melt cushion, such as changes caused by fluctuations in viscosity. These functions will be demonstrated by the production of a sealing cover made of PP, with a mold supplied by HTW, Austria. A W823 robot from WITTMANN will remove the parts and deposit them on a conveyor belt.
WITTMANN automation and peripheral equipment
In addition to the robots and peripheral appliances integrated in the injection molding machines, WITTMANN BATTENFELD will present a wide range of robots and peripherals at the Chinaplas as stand-alone solutions, among them the absolutely new W838T robot model. The products on display will come from the production plant in Kunshan.
In the area of automation, robots for small injection molding machines will be presented, i.e. the models W808, W818S and the model W818TS with a telescopic axis. With injection molding machines of this size, it is vital for robots to remove the parts within a short time, for example in the production of thin-walled plastic parts. The vertical axes of the robot models W818 and W818T, which are part of the range, come with ribbed aluminum profiles and are driven by servo motors via driving belts to minimize the moving mass.
For injection molding machines in the medium clamping force range, the W828 robot model will be showcased, featuring a massive horizontal stroke profile located directly inside the main carriage with a maximum range of 1,300 mm, and an additional servo-driven, pivoting C axis.
Thanks to its servo drive, this pivoting C axis gives the robot the additional, precisely adjustable degree of freedom which is required for complex demolding movements and accurate positioning in insert applications or extra automation.
Furthermore, a new model, the W838T robot, will be introduced. This model with 15 kg load capacity is currently the strongest type of robot produced by WITTMANN Robot (Kunshan) Co. Ltd. and constitutes a perfect addition to the product portfolio already being made in Kunshan. Its design and technical structure follow the new pro series. For example, the telescopic stroke of the vertical axis is supported by two linear guides and consequently offers improved rigidity. The W838T model is equipped as standard with a pneumatic pivoting C axis, which comes with a torque twice as high as that of the next smaller robot model W828. The W838T can be fitted with a pivoting B servo axis with up to 150 Nm capacity as an option.
Like all other WITTMANN robots, the W838T comes exclusively with the innovative R8.3 robot control system, which offers features to improve and optimize processes such as QuickNew for extremely easy, animation-assisted creation of new operation sequences, EcoMode for automatic selection of optimal movement speeds and thus increasing the energy efficiency, and SmartRemoval for further shortening of parts removal time.
The most outstanding model among the dryers is the DRYMAX Aton segmented wheel dryer. This dryer consists of numerous separate chambers loosely filled with desiccant balls. In conjunction with the innovative 3-save process, this not only ensures efficient use of energy, but also a continuous drying process with a constant dew point. Moreover, the use of conventional desiccants instead of honeycomb wheels permits low-cost exchange of the desiccant without having to replace an expensive, complete wheel. WITTMANN segmented wheel dryers are available with capacities of 30 m³/h, 70 m³/h and 120 m³/h for medium throughputs of up to about 60 kg/h, depending on the plastic granulate to be dried.
In the area of temperature controllers, the entry-level models TEMPRO basic C90, 120 and 140 will be on display, as well as a single-circuit and a dual-circuit model from the high-performance TEMPRO plus D series.
Furthermore, WITTMANN will present its range of granulators at the Chinaplas, among others the MAS grinders MAS1 and MAS2, and the screenless beside-the-press granulator models Minor 2 and Junior 2 Compact.
In the materials handling sector, WITTMANN will demonstrate its competence with the S3 standalone loader and the central material separator from the FEEDMAX B series. Both these material handling appliances stand out by their process reliability as well as easy operation and servicing.
In the area of metering technology, WITTMANN will present a GRAVIMAX primus G14 blender with a throughput of up to 80 kg/h and a DOSIMAX volumetric blender. The GRAVIMAX is equipped with wear-resistant, high-precision stainless steel valves. Metering accuracy is ensured by RTLS technology (real time weighing). Two weighing cells are active throughout the entire metering cycle, which measure with an accuracy down to single grams and thus ensure consistent parts quality for every shot.
The range of peripherals will be rounded off by a WITTMANN flow controller.
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