The first step was to select a robot type that satisfied all requirements. For this purpose, an accessibility analysis was carried out with the YASKAWA offline simulation program MotoSim to test the different robot types for viability. The available robots were evaluated with the aid of the layout, to determine which one was best suited to the task. The main focus of attention was placed on the criteria of range, payload, precision and cycle time.
Two robots employed
The final decision was made in favour of the MOTOMAN MH24. With a payload of up to 24 kg, at first sight the latter would appear to be oversized, but here the key factors were the range and design of the robot. The hollow wrist of this model facilitates optimum mounting of tools and easy feed-through of the gripper cable.
In order to reach all participants and guarantee a constant product flow, two robots had to be employed in the pilot installation. One robot was to operate in the wet zone (rinser, filler, outgoing goods) and a second robot was responsible for handling in the dry zone (flame treater, printer, incoming goods). At the interface between the two areas is the XTS table that is to be served by both robots.
Safety concept and system communication
To ensure connectivity to the safety concept, the robots were equipped with YASKAWA’s functional safety unit. This enables, among other things, the definition of safe areas and the integration of tool contours. Equipped with two-channel safety signals, the safety control complies with current safety standards. There were thus no further obstacles to connection of the robots to the overall safety concept.
Read more…
