Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 21)

L
0
Stationary
Platen
Clamp
Cylinder
Position
Velocity
Moving
Platen
1st Close
Profile
2nd Close
Profile
3rd Close
Profile
X
Overview of Inject, Clamp, and Eject Mode
Chapter 1
1-9
You control clamp operation with these phases:
clamp close
low pressure close
clamp
open
open slow
Figure 1.9
Clamp Portion of a Typical Machine Cycle
Inject
Ejector retract
1st
Close
2nd
Close
3rd
Close
1st
Open
2nd
Open
3rd
Open
Low Pressure
Close
Open
Slow
Ejector advance
Clamp Close
You may configure three separate clamp close profiles:
first close
second close
third close
You may select from these control modes:
velocity vs. position
pressure vs. position
Use clamp close to move the platen from the fully open position (L) to
some position X at a relatively high velocity or pressure. X is a position
relatively close to the stationary platen yet far enough away to allow
deceleration into low pressure close. This prevents the platens from
coming together at a high velocity (Figure 1.10).
Figure 1.10
Example Clamp Close
Clamp Control