Handling Two Components in a Single Shot
Robot in Twin Design
Left/right in a single shot: At their Crock site in Thuringia, Germany, automotive supplier Arkal Automotive GmbH produces two door side panels at the same time. Made on behalf of a tier 1 supplier, the parts are generated on an MX 1600 – 12000 injection molding machine supplied by KraussMaffei Technologies GmbH in Munich, Germany. The multi-daylight mold was specially designed to suit this application. It is equipped with a "flying platen" and mold cooling feature. The parallel plates of the MX series prevent damage to the molds.
The special thing about the manufacturing cell: Two linear robots LRX 350 sitting on the same Z axis demold the components in a synchronous process, before placing them onto a conveyor belt. This so-called TwinZ design is perfectly suited to transfer components (handshake) if component demolding and stacking are fast. In addition, the configuration saves a significant amount of space and time in the case of overlapping movement areas. Arkal chose this solution, because "the combined linear robots with multiple kinematics offer considerable benefits in terms of durability, flexibility and convenience," says Thomas Reichl, Manager of Production & Maintenance at Arkal.
This type of robot stands for the first time KraussMaffei combined two mechanically coupled X-/Y-axes of the LRX series on a Z-robot axis to a new control concept. Both linear robots, as well as the MX 1600, can therefore be programmed and controlled via the central MC6 control unit. Program instructions and parameters can thus be easily assigned to the respective robot. While all axes share the same coordinate system, robot-specific control in the individual operating modes is easy.
"We were able to shorten cycle times considerably by implementing an MX 1600 – 12000 in combination with an LRX twin robot," explains Thomas Marufke, Managing Director at KraussMaffei Automation. Arkal currently manufactures approximately 3,600 door side panels per week from a PP-GF 30. The plant is operated in three shifts, alternating between front and back panels.
KraussMaffei Technologies GmbH
Patents encourage innovation: Stay on the ball with the latest innovations in the plastics industry in our patents section.
Would you like to subscribe to our Newsletters on plastics technology and profit from the latest information?
You know the trade name but want to know the material manufacturer, type of polymer and delivery form? Search here!