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The desired shape of the parison wall profile is commanded digitally by the operator using the display. The
size of the tooling opening or die gap, as measured by a die gap position transducer, is compared with the
operators commanded position as set on the DigiPackⅡdisplay.
The error between the operator commanded position and the actual position caused the servovalve to
control the oil flow to the actuator and reduce the difference between the commanded and actual die gap
opening (position error) to a very small value. This feedback process ensures that the actual die gap
opening follows the commanded die gap opening very accurately.
Figure 2-3 Poor Vertical Alignment Be-
tween the Parison and the Mold
PARISON MOLD ALIGNMENT
2-2-8.
The Alignment Lines provide a reference line to indicate the parison thickness and the resulting container
wall section after it is blown.
At the alignment lines, the parison is relatively thick and the mold circumference is large. When the parison
is blown, the resulting container wall thickness as measured at the alignment lines is consistent with the
wall thickness measurements of the rest of the container.
If the relative vertical alignment of the parison to the mold is poor, then the wall thickness will not be uni-
form throughout the container and the container must be scrapped.
Figure 2-4
shows the relative vertical position between the parison and the mold. The thicker portions of
the parison are stretched by the blow air pressure to fill the portions of the mold with the greatest cir-
cumference. The act of programming the parison to have its thicker sections in vertical alignment with the
portions of the mold with greatest circumference will produce a container with the desired constant wall
thickness.
© MOOG 2010
This document is subject to MOOG INTELLECTUAL AND PROPRIETARY INFORMATION LEGEND . The details are on page II.
Figure 2-4 Good Vertical Alignment Be-
tween the Parison and the Mold.
46
MRJ04410
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Do you have a question about the DigiPack Ⅱ and is the answer not in the manual?
Questions and answers
How..to set up the..Digi pack 2 on machine
To set up the Moog DigiPack II on a machine, follow these key steps:
1. Installer Requirements: The installer must be familiar with electrical wiring, hydraulic plumbing, basic metal work, and have some understanding of the blow molding process. Use of test instruments like a digital voltmeter is also required.
2. Mechanical Installation:
- Install and adjust tooling and die gap actuators.
- Mount the servovalve and manifold.
- Install the hydraulic cylinder and ensure it meets customer specifications.
- Measure and set accumulator position.
- Ensure proper filtration and install filters.
- Connect the hydraulic power supply and follow startup instructions.
- Implement contamination control.
3. Electrical Installation: Follow the manual's guidance for electrical connections.
4. Software Update (if needed):
- Power off DigiPack II and remove the SD card.
- Save the “DIGIPK2.FWM” file to the SD card using a PC.
- Reinsert the SD card and power on the unit.
- Press “X10” and “Cursor Down” keys simultaneously during startup.
- Wait for the “Updating firmware……” message.
- Confirm update by checking the software version on the startup display.
5. Calibration and Setup:
- Set accumulator working stroke, shot size, and end position.
- Interface DigiPack II with the machine’s PLC for motion control.
Proper installation following the manual ensures reliable long-term operation.
This answer is automatically generated
The shot size is to short and the Digi pack to is not in command..
If the shot size is too short and the Moog DigiPack II is not functioning properly, turn the Entry Knob clockwise to increase the Shot Size value on the LCD display. Then press the Set button to make the change permanent.
This answer is automatically generated