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Causes and solutions for the effect of self-winding yarn on warping

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Causes and solutions for the effect of self-winding yarn on warping

(Summary description)The indicator for the examination of warping breaks is “the number of broken ends of 100 million meters”, that is, the number of broken ends of a warp yarn within a length of one million meters. Due to the different fabric structure, the winding is interrupted during the unwinding process on the warping machine. When the head is particularly long, it not only affects the efficiency of the warping machine, but also increases the workload of the driver. It also increases the fabric defects and adversely affects the fabric. As a spinning mill, the order may be lost.

Causes and solutions for the effect of self-winding yarn on warping

(Summary description)The indicator for the examination of warping breaks is “the number of broken ends of 100 million meters”, that is, the number of broken ends of a warp yarn within a length of one million meters. Due to the different fabric structure, the winding is interrupted during the unwinding process on the warping machine. When the head is particularly long, it not only affects the efficiency of the warping machine, but also increases the workload of the driver. It also increases the fabric defects and adversely affects the fabric. As a spinning mill, the order may be lost.

Information

The warp break is the breakage of the yarn produced by the warper during normal winding.

The indicator for the examination of warping breaks is “the number of broken ends of 100 million meters”, that is, the number of broken ends of a warp yarn within a length of one million meters. Due to the different fabric structure, the winding is interrupted during the unwinding process on the warping machine. When the head is particularly long, it not only affects the efficiency of the warping machine, but also increases the workload of the driver. It also increases the fabric defects and adversely affects the fabric. As a spinning mill, the order may be lost.

It can be seen that the problem of warping breaks is very important. Common problems such as broken broken ends, broken circles, broken layers or broken ends, and irregular broken ends require corresponding solutions to the problem.

First, the glue breaks

The problem of blocking breakage is the breakage caused by the entanglement of the yarn when it is unwound, and it is generally broken when the diameter of the yarn is relatively large. The cause is that the tension of the bobbin is large and the bobbin is wound too tightly. For the large yarn of the bobbin, there are many broken ends. Part of the reason is that as the diameter of the bobbin is increased, the weight of the bobbin is gradually increased. When the tension is constant, the heavier the bobbin and the tighter the tension, it can be understood as Large yarns are tighter than small yarns.

Solution: The tension can be opened, the tension is tight when the yarn is small, and the tension is loose when the yarn is large, so that the tension of the yarn is kept as consistent as possible, which can improve the problem of adhesion breakage.

Another reason for adhesion is the high hairiness. It is well known that the hair yarn will increase a lot during the winding process, so the growth of the hairiness in the winding process should be minimized. In terms of reducing hairiness, reducing the winding speed is the simplest, most convenient, and obvious method, but affects the yield; secondly, it ensures smooth passage and reduces friction points. The pre-clearer can be removed and the balloon rupture device can be set to Open the state, check whether the porcelain nozzles on the friction points are damaged, etc.; as well as the process, the process design with small tension can reduce the hairiness. Of course, the root cause of Mao Yu Gao needs to be solved in the previous process, such as: unreasonable process, raw material problems, etc.

Second, the decoupling

The decoupling break is the breakage caused by the multi-filament or multi-strand yarn being taken up by the high-speed unwound yarn. The cause is that the tension of the bobbin is small and the bobbin winding is too loose. Contrary to the cause of the glue breakage, the tension control method when the breakage is broken can be referred to.

Third, chaotic layer or return wire break

The chaotic phenomenon is that the yarn is not wound onto the bobbin according to the groove pattern of the groove; and the yarn return phenomenon is that the yarn is attached during the winding process of the yarn. Generally, normal winding does not produce these two phenomena. After long-term observation, the cause is related to the repeated suction of the large nozzle and the negative pressure of the main suction motor, and the second is that the large suction nozzle absorbs the yarn and encounters the package yarn. The messy layer.

solution:

Adjust the distance between the large nozzle and the bobbin one by one, and keep the gap of 3mm-5mm;

Check if there is a single joint inferior or the yarn detector sensor is faulty and cause repeated joints;

Check whether there is a phenomenon that the driver does not process the bobbin directly according to the single ingot start button, and strengthens the trainer training;

Whether the yarn clearing process is set too tight and causes frequent joints;

You can adjust the number of yarn ends in the “Cycle” menu from 3 times to 2 times, or even once, to reduce the number of repeated suctions;

Reduce the rotation speed of the suction motor of the front end, and reduce the negative pressure of the suction of the large suction nozzle;

Strengthen equipment management, personnel training and on-site management.

Fourth, irregular breaks

1. The strength of the splicing is low. It is necessary to check whether the splicing configuration is reasonable and whether the splicing process achieves the best effect.

2, the broken yarn caused by weak crepe, this phenomenon is more common in the coarse variety, that is, in the process of twisting the spun yarn without twisting, the strength is also very low, the need to optimize the yarn clearing process.

3, the details of the broken head, such as the yarn clearer did not cut off the small group of yarn, fine yarn and the difference between the yarn, the strength is low, will cause warping breaks, but also need to optimize the yarn clearing process.

With the popularization of automatic winders, the proportion of automatic winding yarns will become larger and larger. It is especially important to reduce the warping of broken warts caused by the failure of automatic winding yarns. Go deep into the scene, find and solve problems, operate, clean and repair according to the operation method, and ensure that the equipment is in the best working condition. Only in this way can we use the advantages of the automatic winder to spin good products.

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