Specifications

D-M-E Runnerless Molding Systems
37
Ø 19
land (max)
To suit
80°
Max 4.5
Z
R5 spherical radius
Min 1
0.15
0.8
90°
Wiring channel
Manifold line
F* in operating temperature
Max 20
H6
H6
R3
R9,5
Z
Min 6
25.4
16
Ø 40
Ø 38
Ø 32
3.5
20
F* = A + A
30°
Ø 19
R3
The Hot-One System
Standard Hot-One system
I
nstallation Instructions - Gate Mate 4
TM
nozzle - GMB
Gating
Fitting instructions
1. Machine the nozzle's seat directly into the mold for
best results.
2. For best gate appearance (lowest gate vestige),
design tip to be ,0 to 0,13 mm back from the cavity
at room temperature. Maintain a minimum
clearance of 0,25 mm around the tip through the
gate in the "hot" position. To achieve best material
flow, position tip up to 0,5 mm maximum back from
cavity. This position will result in a higher gate
vestige.
3. Provide maximum water cooling in cavity insert
around gate.
4. Machine seat area following dimensions carefully.
Hold the 19
H6
diameter, as this is a seal-off
dimension.
5. Ensure minimal thermal contact between nozzle
and mold, especially under nozzle shoulder.
6. Route wires through wire channel in retainer plate.
7. Provide a gate dimple on core/cavity opposite gate,
this will allow for best material flow.
Gate shell insulator - GSI
It fills the space near the gate in Gate Mate 4
TM
type
applications. This avoids stagnation of the injected
plastic material near the gate, and makes color
changes easier. The material used is virgin Polyimide,
selected for its unique mechanical, thermal and chemical
resistance. Its stability in long periods of time and its
low thermal conductivity make it an ideal choice.
Moreover, the slightly elastic behaviour of virgin Polyimi-
de ensures a perfect sealing of the gate shell space.
The Gate shell insulator is particularly suitable when
injecting plastic materials that degrade easily, either
short or long term. In many cases, the frozen layer of
the processed resin will be eliminated completely so
that no stagnation will occur.
REF. A A1
GMB 0150 EX 50,8 49,8
GMB 0151 EX 63,5 62,5
GMB 0152 EX 76,2 75,2
GMB 0153 EX 88,9 87,9
GMB 0154 EX 101,6 100,6
GMB 0155 EX 127,0 126,0
GMB 0156 EX 152,4 151,4
Dim. A1 refers to the thru hole tip.
IMPORTANT: Use also "A" value for the installation of thru hole tips.
Note:
The expansion factor must be taken into consideration
prior to machining for, and installing nozzle.
∆A = A x α
c
x 10
-6
x ∆T
α
c
= 16,8 - 0,026 x A
∆T = nozzle set point - 20°C
Example:
Given a 127 mm A dimension, with a nozzle setpoint
temperature of 260 °C.
∆ A = 127 x (16,8 - 0,026 x 127) x 10
-6
x (260 - 20 °C) = 0,41 mm
Thus F* = 127 + 0,41 = 127,41 mm
Please note that the above information is given as an
example and not valid for GMT 0300. Use half the value
for carbide tips. Variations may occur based on mold
configurations and cooling factor. In some instances, it
may be necessary to obtain an empirical factor.
REF.
GSI 0001
Installation
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