
19.3.11 Melt-CUBE Design A: Retighten Wedge Screws
(Hot Condition)
WARNING
Potential burn hazard. Use socket extension and heat resistant gloves.
CAUTION
Wedge screws must be tightened once the system is heated to processing
temperature. Failure to do so could cause leakage.
Do not over torque screws. Use proper torque wrench for in-lb or fraction
of Nm scale. Do not use torque wrenches with ft-lb or large scale Nm for
tightening the M4 and M6 screws.
If the processing temperature is changed by more than 30°C (54°F) then
all wedge screws should be loosened at cold condition and the assembly
process repeated at cold and process temperature, as explained below.
CAUTION
1. Set temperature of all Hot Runner components to processing temperature
according to start up procedure. Make sure all cooling lines other than
cover plate are connected properly.
2. After reaching the processing temperature in Melt-CUBE, let it soak for at
least 5 minutes.
3. Tighten all the melt wedge screws SHCSM4X20 to 1.69 Nm (15 in-lb)
torque.
4. Tighten the SHCSM6X25 screw at the center of load wedge to the proper
torque as shown in Table 19-3.
5. Tighten all the melt wedge SHCSM4X20 screws to 3.38 Nm (30 in-lb)
torque as shown in Table 19-4 on page 19-15.
Table 19-3 Load Wedge Screw Torque Chart - Design A
SHCS
Tip Angle
(°)
Transfer Seal
Temperature
Torque Value
Nm (in-lb)
M6X25
0°
TSM269
Process Temp
8.5 (75)
15°
8.2 (73)
30°
7.9 (70)
45°
6.8 (60)
60°
5.6 (50)
19-14
© 2020 Mold-Masters (2007) Limited. All Rights Reserved.
MELT-CUBE SYSTEMS
Hot Runner User Manual
Содержание Hot Runner
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