Hot runner nozzle - Günther Heisskanaltechnik ...
Hot runner nozzle - Günther Heisskanaltechnik ...
Hot runner nozzle - Günther Heisskanaltechnik ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Gating<br />
Fig. Gate geometry<br />
H [mm]<br />
4,0<br />
3,5<br />
3,0<br />
2,5<br />
2,0<br />
d = 3 mm<br />
d<br />
80°<br />
ØD<br />
www.guenther-hot<strong>runner</strong>.com<br />
4/11 Subject to technical changes<br />
6,3<br />
H<br />
sharp-edged<br />
d = 4 mm<br />
1,0 1,5 2,0 2,5 3,0<br />
Fig. Inspecting the gate<br />
Fig. Reworking the gate<br />
Wrong<br />
Ø D [mm]<br />
iT<br />
Gating<br />
The hot <strong>runner</strong> <strong>nozzle</strong>’s function is<br />
essentially influenced by gate size<br />
diameter “D”.<br />
An enlargement of gate size must<br />
be done at an 80° angle. The edge<br />
must be sharp to achieve clean<br />
separation.<br />
Note:<br />
The most frequented faults on<br />
commissioning a mould are due to<br />
the incorrect design of the gate<br />
geometry.<br />
Inspecting the gate<br />
The correct position of the 80° angle<br />
is inspected with a measuring ball.<br />
Reworking the gate<br />
It is wrong to rework the gate by<br />
boring it out. The flow gap will not be<br />
substatially enlarged but the tear-off<br />
height on the part will become larger.<br />
1.4. 10
Change language