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Detectors & Stop Motion Devices
Throughout the entire range of Tritex circular knitting machines,
there are standard and optional detectors and stop motion devices.
Depending on the model, it can be equipped in many ways to ensure the
machine will stop upon any error occurrences.
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Top Detector
Should a yarn run out, or the tension from the yarn package become
excessive, the device trips, the machine is stopped and the light will
illuminate. These are usually positioned on the top of the creel to
ensure the machine will stop before the fabric passes through the
feeder. These detectors are available for fabric machines only.
Needle Detector
Needle detectors are set up around the cylinder in two ways; firstly to
detect a broken needle butt and, secondly, to detect closed latches that
may occur during fabric & mesh faults. They can also be wired to a lamp
which will illuminate when a fault transpires. Needle detectors are
available to use on both fabric and wire machines. |
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Heavy Duty Needle Detector
As above except for wire machines only. These are stronger than the
standard needle detectors making them ideal to detect mesh load ups
using larger gauge wire whilst providing more resistance against damage
of the unit.
Wire Run Detector
These operate by sensing the movement of the wire. If a wire breakage
occurs before the detector then the machine will stop. If the wire
breaks after the unit then the machine will stop providing the wire
drops through the sensing hole. The detector is placed as close to the
bobbin as possible to help prevent a press-off incident. |
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Broken Hook Detector
These detectors count needles and hooks in parity which detects the
occurrence of a broken hook on a needle. When a fault is found, the
machine will stop. These detectors are generally used on wire machines
where needle hooks are more prone to breakage from immense pressure of
wire mesh takedown.
Press-off Detector
Press-off detectors are used in fabric machines where a yarn can
press-off and burst a hole in the fabric. A plate is sprung against the
fabric and detects holes within the fabric if it comes into contact with
the machine cylinder. This stops the machine enabling the operator to
rectify the problem before a total press-off occurs. |
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In-line Detector
The purpose of the in-line detector is to detect when the yarn has
either broken at the bobbin or when the bobbin runs out of yarn. The
pre-tension can be adjusted to suit the yarn/wire or the quality of the
knitted fabric/mesh by meads of the knurled knob. These are suited for
both fabric and wire knitting machines.
Wire Snatch & Tension Detector
This operates by detecting an increase in the tension of the wire from
the package. Once the wire tension required to stop the machine has
exceeded, the pulley will move and break the circuit causing the machine
to stop. The detector is adjustable to suit the tension of the wire
bobbin required to stop the machine. |
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Flying Fabric & Roll Size Detector
Used on rotating cylinder machines where the takedown rolls up the
knitted fabric. If the roll somehow manages to unravel itself then the
flying fabric has a chance of hitting this detector causing the machine
to stop before it can get wrapped around and damage the machine. This
detector can also be a back-up for both fabric and wire machines where
if the preset counter fails or is incorrectly set and the roll continues
to grow to a size larger than the inside of the machine, it will trip
the detector and stop the machine. |
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