© MOOG 2019
This document is subject to MOOG INTELLECTUAL AND PROPRIETARY INFORMATION LEGEND . The details are on page II.
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MRJ06301
1-5-6. TOOLING ADJUSTMENT
When a mold change is made, it is often necessary to change the die gap tooling assembly. Therefore the
actuator installation must provide for simple adjustment of the die gap tooling position relative to the actu-
ator position.
The extruder barrel and/or screw can be severely damaged if the tooling die gap closes when
the extruder is running. A mechanical motion stop must be installed which will not allow the die
gap to close.
1-5-7. ACCUMULATOR POSITION MEASUREMENT
If the DigiPack
Ⅲ
is being installed on a continuous extrusion machine please go to the next section.
Accumulator type blow molding machines require a position transducer to indicate the accumulator posi-
tion. The parison wall thickness pattern can then be programmed with direct reference to the accumulator
stroke of Shot Size.
1.5.7.1.
INSTALLATION REQUIREMENTS
The position transducer is required to operate in a high temperature and vibration environment. In addition
the transducer must accommodate some mechanical miss-alignment without reduction of life and linearity.
The part of position sensor allows adjustment for interlocking the movable part of the potentiometer with
the moving of the accumulator. and also has the following functions:
1) An accumulator driven bearing guided structure for the potentiometer drive arm
2) Mounting provisions for the potentiometer on the same bearing guided structure, provisions for
adjustment to insure parallel motion of the potentiometer guide arm and potentiometer drive rod
3) And a rod end bearing between the potentiometer drive rod and the potentiometer guide arm
Figure 1-11 Typical Linear Potentiometer
Figure 1-12 LWHxxx Potentiometer Installation
Installation Information
LWH
300
500
750
900
Electrical Data
Rated Stroke
mm
300
500
750
900
Nominal Resistance
Kohm
5
5
10
10
Independent Linearity
%
0.07
0.05
0.05
0.05
Mechanical Data
mm
Mechanical Stroke
B
312
515
769
922
Body Length
A
375
579
833
985
Mounting Feet Spacing
X
280.5
484.5
738.5
890.5
