INDUSTRIAL CLEANING PRODUCTS WASH, RINSE AND DRY MASS-PRODUCED AUTOMOTIVE PARTS
Assembly processes or surface treatments including galvanising or painting require clean parts. Depending on the application, aqueous cleaning solutions or solvents can be used. Solvents are preferable for oily mass produced parts for the automotive industry as they are quick, economical and resource-saving. A twin-chamber perchlorethylene-based cleaning plant from Höckh has raised the bar with operation under full vacuum. When integrated into the production
cycle it increases part throughput significantly. Up to 10 crates filled with pressed and stamped parts pass through the system every hour in a three-shift operation utilising valve terminal technology from Festo. In addition to rapidly cleaning large volumes of metal parts in either a 65° or 98° wash with liquid or vaporous perchlorethylene, the system dries the parts using a vacuum after they have been washed; in less than 15 minutes per crate. Before that the pressed parts are transported in bulk. To select the right program the operator simply scans the bar code on the accompanying ticket. As soon as he has left the loading area, automatic feeding begins and the crate is transported to the next free process
chamber. To achieve the required capacity the process has been divided between two chambers. The loading gantry then loads the rotating crate holder and a Festo standard cylinder DNG with a stroke of 180 cm closes the sliding door of the process chamber vacuum tight. When it reaches the last few centimetres a clever toggle lever mechanism ensures it is firmly closed. Depending on the parts type, this is
followed by an individual cleaning programme which can be made up of various modules including evacuation of the process chamber to process vacuum, pre-washing in the spray process, flood cleaning (full bath) from tank one, post
The door of the giant washing machine drum is closed by a standard cylinder
washing in the spray process, flood cleaning (full bath) from tank two, vapour degreasing with solvent vapour and vacuum drying. A limit value encoder monitors the drying process so that only completely dry, solvent-free parts are removed from the process chamber. The cleaned parts then pass through a
cooling tunnel on the unloading roller conveyor so that the crates can be packed directly for shipment. To achieve maximum flexibility the system was designed as three separate modules. For cleaning there are two identical,
completely independent cleaning modules with process chamber, twin tank, distillation plant, pumps and filters. One can be switched off in the event of maintenance or low capacity utilisation and the system can continue to operate at half capacity. Both are connected to a central supply module which houses the vacuum pumps and the activated carbon absorber for process air preparation. The entire vacuum performance of over
1,000 m³/h can be divided into variable ratios between the two process chambers if required, ensuring high throughput.
Festo T: 0800 626 422
www.festo.com
Enter 303
Turn-key Solutions mean clean, safe, profitable working
Welding & cutting Woodworking Metal machining Composite machining
Foundries Automotive Dust & Fume
Nederman’s Project Team Delivers : Pre-studies Planning Design Installation Commissioning Training Maintenance
Extraction & Filtration for : Nederman’s integrated industry solutions
www.nederman.com
Please contact us to arrange a free site survey
www.nederman.co.uk 08452 74 34 34
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