10ć11, Cushion, shot size, and transition setpoints, Tune your machine for producing parts chapter 10 – Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE User Manual
Page 157: Minimum profile requirements
Tune Your Machine for Producing Parts
Chapter 10
10-11
Minimum Profile Requirements
We present minimum requirements for inject-mode profiles. Use this as a
starting point for developing your own part-specific profiles.
Profile
EndĆofĆSegment
Position Setpts
Time
Setpoints
Velocity
Setpoints
Pressure
Setpoints
RPM
Setpoints
Other
Injection
Velocity vs. Position
None required
N/A
IPC09
N/A
N/A
one of IPC60, 61, 62, or 63
PressureĆlimited Vel/Pos None required
N/A
IPC09
N/A
N/A
one of IPC60, 61, 62, or 63.
IPC57, 58, and 59
Pressure vs. Position
None required
N/A
N/A
IPC10
N/A
one of IPC60, 61, 62, or 63
Pressure vs. Time
N/A
None required N/A
IPC10
N/A
one of IPC60, 61, 62, or 63
Pack
Pressure vs. Time
N/A
HPC11
N/A
HPC09 or
HPC10
N/A
----
Hold
Pressure vs. Time
N/A
HPC28
N/A
HPC26 or
HPC27
N/A
----
Plastication
Pressure vs. Position
None required
N/A
N/A
PPC10
N/A
PPC61 and 62
Pressure vs. Time
N/A
None required N/A
PPC10
N/A
PPC61 and 62
RPM vs. Position
None required
N/A
N/A
N/A
PPC09
PPC61 and 62
RPM vs. Time
N/A
None required N/A
N/A
PPC09
PPC61 and 62
Shot Size is the amount of molten plastic injected into the mold. Cushion is
the amount of molten plastic that remains in the barrel after injection.The
sum of shot size (PPC61) plus cushion (PPC62) tells the QDC module
where to terminate the Plastication profile.
During injection, the QDC module does NOT terminate the shot at
cushion, but continues injecting until one of the four injection transition
conditions occurs. These four conditions during the injection profile are:
elapsed time exceeds a preset limit
ram (screw) pressure exceeds a preset limit
cavity pressure exceeds a preset limit
ram (screw) position becomes less than a preset limit
Cushion, Shot Size, and
Transition Setpoints