Scalpel Demagnetiser

MPI

			Home Accessories Equipment Inks and Paints The blades were stacked on a mandrel carrying 200 at a time. We worked in partnership with the customer, first testing a small manual "rig" then producing an automatic version Pictured opposite is a purpose built demagnetisation unit for scalpel blades. Up to 15 stacks of blades are loaded onto the fascia of the machine. (the picture shows one stack of 200 blades mounted into position) Each stack is sensed via proximity switches and is automatically clamped into position after operator placement.




Johnson & Allen Ltd. Neocol Works, Smithfield, Sheffield, S3 7AR Tel: Head Office: +44 (0) 114 273 8066 \| Fax: +44 (0) 114 272 9842 Tel: Scotland Office: +44 (0) 1506 882371 \| Fax: +44 (0) 1506 882371 Email: sales@johnsonandallen.co.uk

Once placed the blades can not be removed without the machine completing its cycle.
When the fascia is fully loaded a top clamping lever is pressed which initiated the demagnetisation.
Demagnetisation is accomplished via an enclosed motorised platen type lamination and coil.

The platen demagnetiser traverses across the fascia and demagnetises some 3000 blades within 5 seconds.
The stacks of blades are unloaded and new stacks are again automatically clamped preventing the operators from accidentally removing stacks which have not been through the process.

Such was the demagnetisation forces involved, the mandrels had to be securely held at each end to prevent them from distortion and slipping.

The system has many advantages

Fast
Efficient use of energy
No moving parts exposed to operators
Extremely low gauss values (below 0.3 gauss)
Fail safe, no blades can accidentally be removed from the machine which have not been demagnetised.
Built with longevity in mind with extensive use of proximity instead of mechanical switches.
Economic, very high throughput.

This is one example of many unusual machines for MPI and Demagnetisation we have designed and built in the past.