Product Manual | Lynx™ Embedded Sensors LES‑B‑127‑50/125/500/2000
31
NON‑STANDARD INSTALLATIONS
STATIC (NON‑MOVING) EJECTOR PINS
While cavity pressure sensor installation
with moving, or “working” ejector pins
is recommended, in some situations a
non‑moving or “static” pin must be utilized.
In most cases, static pins are installed
directly into the cavity plate, or into a
cavity insert. In some cases, static pins will
extend through multiple plates, such as
applications that extend back to the clamp
plate. Read and follow all instructions, and
refer to the provided figures to properly
install sensors with static ejector pins.
1.
Static Ejector Pins Overview
Static ejector pins are non‑moving pins
which sit on top of button‑style sensors to
transfer plastic pressure in the cavity to
the sensor in a mold plate. Unlike moving
ejector pins which self‑clean during each
ejection cycle, static pins can allow build‑
up of material around the pin over time.
Static pins should have an O‑ring on the
end of the pin to prevent contamination
build‑up that contributes to measurement
errors, allowing the sensors to read
accurately over time.
Successful static pin installation provides
lower sensor and installation costs; easier
sensor maintenance; flexibility in sensor
and pin sizing; and freedom in sensor
location.
2.
Ejector Pin Bore and Lead‑In
Provide space in the sensor pocket for the
sensor and static pin allowing for clearance
above the pin head equal to 1/5th of the
part thickness at pin location (
1
at right
) if
part thickness is less than or equal to 0.06”
(1,5 mm), or 0.012” (0,3 mm [
1
at right
]) if
the part thickness at pin location is greater
than 0.06” (1,5 mm).
From the sensor and pin head pocket,
provide a clearance of the pin diameter
plus 0.06” (1,5 mm [
2
at right
]).
Step down the bore to a standard ejector
pin bore of H7/g6 (
3
above
) (in which the
ejector pin is able to freely move) before
the cavity to provide a sealing surface
for the O‑ring at the end of the static pin.
Chamfer the transition between the sensor
and pin head pocket and the pin bore, and
also the transition between the pin bore
and standard fitment at the end of the pin
(no more than 30°/15° per side).
1
STATIC PIN INSTALLATION
Sensor
Static Pin
H7/g6 Fit
O‑Ring
Max 15°
Lead‑In
Chamfer
2
3
CAUTION
a
These guidelines are for pins 3/32”
(2,5 mm ) diameter or larger. Please
contact RJG Customer Support for
installation of static pins smaller
than 3/32” (2,5 mm) in diameter
Содержание Lynx LES-B-127-125
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