Hot runner nozzle - Günther Heisskanaltechnik ...
Hot runner nozzle - Günther Heisskanaltechnik ...
Hot runner nozzle - Günther Heisskanaltechnik ...
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1.4. 37<br />
iT<br />
Fig. Disassembly of a multi-tip <strong>nozzle</strong><br />
<strong>Hot</strong> <strong>runner</strong> <strong>nozzle</strong><br />
Reference notes on disassembly<br />
of a multi-tip <strong>nozzle</strong><br />
To avoid damaging <strong>nozzle</strong> tips, we<br />
suggest a mechanical construction<br />
which imposes a change in the way<br />
the <strong>nozzle</strong> is disassembled :<br />
1. Loosen the wedge and the counter-pressure<br />
insert.<br />
2. Push out the divided form inserts<br />
to the right and left over the <strong>nozzle</strong><br />
tips to their limits.<br />
3. Now pull out the form inserts<br />
downwards in the direction of the<br />
cavity.<br />
4. Loosen the screw fastening for<br />
the suppressor and remove it<br />
5. Now the <strong>nozzle</strong> can be taken upwards.<br />
What should be observed in the<br />
construction phase:<br />
1 To prevent jetting, inject against a<br />
core, for example.<br />
2. The shear edge must amount to at<br />
least the injection gate diameter<br />
+ 0.2 mm (see drawing).<br />
3. There should not be any draft<br />
angle in the injection gate area<br />
(see drawing).<br />
www.guenther-hot<strong>runner</strong>.com<br />
Subject to technical changes 4/11
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