Plastics Technology

AUG 2016

Plastics Technology - Dedicated to improving Plastics Processing.

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On the smaller end of the size range, Vienna saw the debut of a prototype of the compact WL80 servo robot, designed for pick- and-place applications on 30-60 ton machines. It has a 4.4-lb payload capacity and R8 control. Designed partic- ularly for the Asian market, it comes with optional pneumatic C wrist-flip axis and optional sub-arm for three-plate molds. Meanwhile, Wittmann's WS80 servo sprue picker, introduced in 2014 (see Dec. '14 Fakuma Close Up), is now avail- able with Net8 control for use on any brand of injection machine. A new standard option for Wittmann robots is the integrated control of machine-vision cameras from Cognex Corp., Plymouth Meeting, Pa. (cognex.com). The camera can be controlled from the robot Teachbox pendant. It provides the ability to guide the robot to accommo- date slight variations in part position. The latest in Wittmann's mold-temperature-control units (TCUs) is the Tempro plus D120 Large, a high-end unit with new 5.7-in. color touchscreen, connector for a mold sensor, mold-purging function, and interface to Wittmann's Flowcon plus flow controller and to the injection machine control. These interfaces and the ability to inte- grate the TCU control into the Unilog B8 control is an example of Wittmann's version of Industry 4.0, which it calls Wittmann 4.0 (see April '15 Keeping Up). The new unit is a high-capacity direct- cooling, single-zone TCU with a 4-kW (5.4-hp) pump, capable of a maximum flow rate of 280 l/min (74 GPM) and max. pressure of 5.9 bar (86 psi), suiting it to molds with multiple cooling circuits. Heater capacity of 36 kW allows water temperatures up to 120 C (248 F). Also new is dual flow-monitoring capa- bility on Tempro plus D units. Ultrasonic flow measurement is available on two independent cooling circuits per zone, rather than just one. In addition, Wittmann's Flowcon plus electronic, multichannel CARDBOARD HDPE AUTO PARTS CARPET X-RAY FILM PRINTER OVERRUNS WOOD BEAMS NYLON TRIMMER LINE HARD DRIVES The MicroPower micromolding system now is offered with two angled barrels for two-component molding. I N J E C T I O N M O L D I N G Close -Up On Technolog y

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