Under the very severe situation of the textile market, people have higher and higher requirements for the quality of textiles, which makes weaving enterprises put forward higher requirements for the quality of cotton yarn. How to improve the inherent quality of package yarn under the existing conditions and continuously meet the quality requirements of weaving enterprises for package yarn has become a major topic facing the managers of textile enterprises. The package yarns spun on the GA014 winding machine mainly have the following quality problems: loose yarn, frayed yarn, overlapping yarn, poorly formed yarn, unqualified splices, winding yarn, flying yarn defects, etc. In response to the above various quality problems, corresponding measures are taken to improve the inherent quality of the package yarn.
Pine bark yarn
Pine bark yarn The performance of the yarn on the package is that part of the yarn is not spun onto the package according to the normal winding method, but is much narrower than the width of the package. It is not tightly wound on the surface of the package, but appears relatively loose. At high speed, Cannot unwind normally when unwinding. The reason for this phenomenon is that the yarn tension is too small, and the reasons for the yarn tension being too small are as follows:
First, there may be a gap between the two tension bowls The inclusion of granular impurities or larger flying flowers causes the tension bowl to not rotate, the tension bowl does not work, and the yarn tension is too small, causing the yarn detector rod to lift up the spinning yarn, resulting in loose yarn.
The second is that the yarn detection rod fails. The smaller tension cannot hold the yarn detection rod, causing the yarn detection rod to lift up for spinning, resulting in loose yarn.
The third is spinning outside the tension. The yarn does not pass through the normal channel and the tension is small, which causes the yarn detecting rod to lift up and spin, resulting in loose yarn.
Take corresponding measures for the above causes of pine bark yarn: if there are impurities or flying flowers between the tension bowls, clean up the impurities or flying flowers in time to strengthen the quality of employees Supervise and improve responsibility and quality awareness. Security workers frequently inspect the yarn detector rods and promptly repair the automatic stop box if the yarn detector rods are malfunctioning, creating a good production environment for employees. Reduce the number of times of tension-free spinning. If loose bark yarn appears on the bobbin, handle it promptly and remove that part of the yarn to prevent the loose bark yarn from continuing to be wound onto the bobbin and causing adverse effects to the enterprise.
Frayed yarn
Frayed yarn is divided into two situations, one is the surface of the package The other kind is that there is a circle of wear on the big end of the tube. The package surface of the package is worn out because the spindle cannot automatically lift out of the high-speed running drum after the yarn is broken due to damage to the self-stop box, or the spindle often lifts up during spinning due to the failure of the yarn detection rod. The lathe operator put a heavy object on the yarn detection rod, which caused the spindle to be unable to lift automatically after the yarn was broken. The workers were unable to discover in time that the yarn followed the groove drum for a long time and the surface of the package was worn away.
In this case, security workers should promptly repair the damaged self-stop box. If an employee finds that the yarn detection rod of the self-stop box is malfunctioning, he should ask a security worker to repair it. Do not handle it by yourself. The phenomenon of a circle of wear on the big end of the bobbin is caused by the loose core of the spindle or the improper relative position between the groove barrel and the spindle. When this phenomenon is discovered, employees should not blindly use grinding spindles, but must ensure that they are repaired before use.
Overlapping yarn
Overlapping yarn is caused by excessive beating of the groove drum, unstable rotation or due to Caused by the failure of the intermittent device of the drum machine. Improper spindle angle can sometimes easily produce overlapping yarns. If this happens, the spindle must be repaired in time and the overlapping packages must be reversed.
Poorly formed yarn
Poorly formed package yarn is due to yarn in the yarn guide groove of the groove drum Marks or improper operation by the operator lead to yarn deviation. For this kind of spindle, it is necessary to find a security guard to grind the groove barrel. The operator should stop the groove barrel when cleaning, so as not to damage the groove barrel and affect the shape of the barrel. For subs with pine cores, operators should repair them promptly after discovering them.
Unqualified joints
For unqualified joints, there are knots with wire and knots. There are several phenomena such as low strength and large knot hairiness. Regarding the quality control of knots, employees must develop the habit of checking knots, and bad joints cannot enter the inside of the bobbin. Security personnel should check the splicing quality of the splicer every day to ensure the splicer’s joint qualification rate. During the knotting process, it is easy for the thread to attach.
In this case, the operator should not let the waste yarn on the hand float out too long during the operation to avoid bringing in cotton yarn and causing the yarn to attach. , affecting the intrinsic quality of the package yarn.
Rolling
The coiling inside the bobbin is caused by improper operation by the operator. When the operator stops the car and starts driving again, he presses the handle of the automatic stop box if the yarn cannot be pulled tightly. In addition, due to the twist of the yarn, it is easy for the yarn to curl.
For this phenomenon, it is necessary to strengthen the training of employees, improve their quality awareness, improve their operation level, master the operation methods proficiently, and reduce the occurrence of winding.
Flying yarn defects
Pan yarn The flying yarn defects are caused by flying flowers entering the package yarn behind the electronic yarn clearer during the winding process. It may also be caused by the missed cutting of the electronic yarn clearer, causing yarn defects formed in the spun yarn to enter the package yarn.
The quality of this kind of package yarn must be achieved by strengthening cleaning management, strengthening the cleaning around the spindle, and ensuring the blowing effect of the dust blower. Check and maintain the yarn clearing effect of the electronic yarn clearer to reduce the number of missed cuts.It can effectively reduce flying yarn defects in the package.
Inherent quality improvement in package yarn is a long-term issue, which requires the joint efforts of all employees to improve operation level, enhance sense of responsibility, and allow employees to establish the concept of quality first and customer first. Quality awareness, all work is based on product quality, and all work is done to improve product quality. Managers at all levels should often tell employees about the significance of product quality to the company. Strengthen the operational guidance, supervision and inspection of operators, guide them to master the operating methods proficiently, reduce the inherent quality of the package yarn, and improve the overall quality level. </p
