Plastics Technology

SEP 2018

Plastics Technology - Dedicated to improving Plastics Processing.

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raphy. Other new features are quick- change capability for end-of-arm tooling (EOAT) that uses wireless communica- tion between the tooling and the robot. In addition, the vertical axis has received a speed boost, and smaller models now have increased torque for faster accelera- tion and deceleration. Also new are ZPX series robots with a high-speed carbon-fiber arm and new 520 control. These robots can extract parts in as little as 0.29 sec, with an overall cycle of 1.97 sec. Industry 4.0 capabilities have been added to these robots by incor- porating the OPC-UA communica- tion protocol in the 520 A and 620 A controller versions. Capabilities include wireless real-time produc- tion monitoring, demonstrated at the show by networking all the robots in the booth. Data such as production quantities per shift are available on the web, and email notifications can be sent automatically if a machine or robot goes down. Other new control capabilities include 3D animation of the robot cycle for use as a final check of a new program or to show a new operator what motions the program calls for. A small USB camera can plug into the control pendant; it can take a picture of a part and save the image. The operator merely touches the image and the control recalls from memory the operating program for that part. Also, a collision-detection feature senses resistance to motion and automatically halts the robot. Sepro America (sepro-america. com) announced an agreement with Absolute Haitian to offer Sepro three-, five- and six-axis robots with Haitian and Zhafir injec- tion presses in North America. All robots will have a control interface that is fully integrated with, and accessible from, the machine control panel. Absolute Haitian technicians are being trained by Sepro to provide after-sales service. Sepro also has partnered with Machines Pages of France for IML applications. At the show, Sepro also emphasized its ability to provide complete automated cells with these complex demonstrations: • High-speed medical molding with part orientation and cavity separa- tion: A Sepro S5 linear robot served a machine with a 32-cavity mold. Cavity-separated parts were delivered to a packing station, while a conveyor system fed racks that were each filled with 96 parts. Every 12 cycles, eight 96-part racks were filled and moved by a pick-and-place unit to the exit conveyor and delivered to an operator for packaging. • Dual robots serving two 250-ton presses: One of two S5-25 linear robots mounted on a common beam retrieved inserts from a feeder before it removed molded parts and placed the inserts for the next cycle. Then it transferred the molded parts and placed them in the mold on Press 2 for over- molding. The second S5-25 robot picked the overmolded components, snap-fitted the two halves together, and deposited two finished parts on the exit conveyor. • Four-cavity family-mold part removal with press-fit inserts, automatic degating and packing: While a Sepro Success 22 linear robot removed molded parts from the injection machine and placed them in a trim station for degating, a Sepro 6X-90L articulated-arm robot picked up inserts from a vibratory feeder and positioned them to be pressed into the degated parts and collected in tote bins. • Fabric die cutting and overmolding on a vertical press: A die cutter produced eight circular fabric inserts, which were loaded by a Sepro 6X-90L six-axis robot into an eight-cavity mold on a shuttle table. The table then rotated 180° to position the inserts for overmolding, "Largest robot in North America" being built for 6750-ton press. Ranger Automation is building what it says will be "the largest robot in North America" for a Milacron 6750- ton press at 20/20 Custom Molded Plastics. It will be larger version of this dual-arm, RT-series model already installed at this molder. Star Automation showed off a new quick-tool-change feature for its TW-VII series robots that uses wireless communication between the robot arm and the tooling. 18 SEPTEMBER 2018 Plastics Technology N P E R E P O R T: R O B O T S Close -Up On Technolog y

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