how is the plastic casing of a 13a plug made
ow is the plastic casing of a 13a plug made
The same as any other mass-produced item .. someone somewhere
came up with a basic line drawing, then they added 3-d dimensions, then
they added notations on how it would house the electrical wires, metal
pins, connectors, fuse . then someone somewhere took the design & made a
'sculpture' - probably in plaster or similar, then that plaster
'sculpture' was coated in a rubber solution . when the rubber dried - hey
presto! - one mould.. the from that basic mould it was 'read' & converted into a metal mould, then that metal mould was reproduced a few hundred time, then all the metal moulds were fixed together to become a series of moulds & attache to a mechanism with timing ... & every couple of seconds plastic was poure into the moulds as they each passed under the injection nozzle . then through a cooling process .. then separated onto a conveyor belt where rows of people in white coats & hats picked them up individually to clean & tidy them & check them for quality .. then back on to a coveyor belt to go down to the next person in a white hat & coat - to be assembled . with all the other parts like pin, screws, fixings for fuses ..hope that makes things clear
injection molding
It starts out as a square block of plastic.
Then thousands of microscopic Pixies appear and carve the shape with their
toenails.
It takes them about 30 seconds to make one.
Pixies from different parts of the world make varying shapes which
accounts for the types of plugs around. I have to admit though, I may well be incorrect in this but its as good an explanation as any! :~}
http://en.wikipedia.org/wiki/13-amp_plug
INJECTION MOULDING AT HIGH TEMPERATURE AND PRESSURE
Injection moulding.
moulded !!
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