Stop Motion for Circular Knitting Machines (Item 20)

Item 20 of 23 listed under stop motions under this product name. Items sharing a name are told apart by the photograph, so check the photograph against your old part before ordering.

Yarn stop motions and detector units that stop the machine when a yarn breaks, runs out or loses tension.

Part groupStop Motions
Supplied byHUAXIATEX, Beijing

Request a Quote Email Us

Send a photo of the old part beside a ruler and we will confirm the match before you order.

Product Overview

Stop Motion for Circular Knitting Machines (Item 20) is listed in our stop motions group for circular knitting machine maintenance. Yarn stop motions and detector units that stop the machine when a yarn breaks, runs out or loses tension.

What This Part Does

A stop motion watches one yarn end. When the yarn breaks or goes slack, the detector arm drops or the circuit opens, and the machine stops before the fault has run into metres of fabric. On a machine with many feeders this is the difference between a short stop and a roll of second quality.

Stop motions are also used at the creel and the feeder positions to catch a cone running out before the end reaches the needles.

Key Benefits

Stops the machine at the fault instead of after the roll
Cuts second quality caused by running on with a broken end
Units for feeder and creel positions
Low voltage circuits that integrate with existing machine wiring

Application Scenarios

Yarn break detection at each feeder
Cone run out detection at the creel
Slack yarn detection after a tension unit
Retrofitting older machines that lack end detection

Who It Is For

Mills with high second quality from undetected yarn breaks
Machine rebuilders restoring stop motion circuits
Maintenance teams replacing failed detector units

Problems It Solves

Metres of fabric knitted with a missing end before anyone notices
False stops from a detector that is out of adjustment
Detector circuits bypassed during a previous repair and never restored

Specifications

Specifications for Stop Motion for Circular Knitting Machines (Item 20)
Product name	Stop Motion for Circular Knitting Machines (Item 20)
Part group	Stop Motions
Machine type	Circular knitting machines
Supplier	Beijing Huaxiatex Co. Ltd., Beijing, China
Listed reference photo	Supplied from our own product records

Only values printed on the product name and in our own records are listed here. Dimensions, material and hardness are confirmed against your machine before you order, not assumed.

What to Send Us When You Order

Machine builder, model and number of feeders
Circuit voltage
A photo of the existing stop motion and its mounting
Quantity per machine

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Use Guide

Confirm the reference against the old part and the machine plate before ordering a full machine set.
Order one complete set per machine where the part is fitted in multiples, so wear is even across the fabric.
Clean the mounting position before fitting. Fly and old oil are the most common cause of a new part not seating.
Check the machine on a short run and measure the fabric before returning it to full production.
Record the reference against the machine so the next reorder does not have to be identified again.

Stop Motions Questions

Why does the machine stop with no broken yarn?

Usually the detector is out of adjustment, dirty with fly, or the yarn tension at that position is too low to hold the arm up. Clean and reset before replacing the unit.

Can stop motions be added to an old machine?

In most cases yes. What matters is a mounting position at each feeder and a control circuit that can take the signal. Send photos of the machine and the control box.

Do you supply the holders and cables as well?

Yes. Detector holders and cables are listed alongside the units.