Comparison before and after the modification
Scope of work
The target was to execute a modernisation and optimation of an existing plant that packs drive shafts regarding hard- and software. The technology of the plant was quite obsolete and it has to be updated to the today´s state of the art. The challenge of this project was mainly the short time for commissioning. After mechanical and electrical complete retrofit in 4 days and 2 additional days software set up production can be restarted with a part of the plant. The start-up of the complete plant was done after two weeks. This was only possible by a good preparation and simulation processes previously.
Operation of the plant
Regarding the operation of the plant it must be mentioned that there are two plant parts. On the first part the drive shafts are conveyed to a lifting table by means of a chain conveyor. After fetching the shafts out of the second plant part by a portal the empty pallet on which the shafts are stored is conveyed to the next plant by another chain conveyor. The second plant part has a 3 axes portal that is positioned by servo drives. By means of that portal the different shafts are conveyed in a box especially provided for it. The logistics is done fully automated.
Modernisations
The plant was disassembled mechanically and all wear parts are modernised. In the course of that the pneumatic components are also replaced. Regarding the electrical installation the switchboard cabinet including operator panel was replaced. For safety functions a safety control with corresponding safety components (safety door switches, safety brake) was inserted. By using an operating interface especially made for the plant it becomes possible to monitor all process conditions of the entire plant.
CE and documentation
On the basis of the new declaration of conformity of the plant an extensive documentation including risk evaluation according to appendix VII of the EC machinery directive has to be made.
