How To Prolong The Life Of Spindle Of Spinning Frame

< p > spindle is an important part of < a href= "http://www.91se91.com/news/index_c.asp > spinning frame < /a >. Its service life is closely related not only to the spinning process of the enterprise, but also to the daily consumption of machinery and materials in spinning enterprises.

In recent years, new products such as economical spindles, lazy spindles and so on are emerging one after another. The speed of spindle is faster and faster, and the service life is longer and longer. Some new methods of maintenance and repair are also emerging.

The netizens on the forum also discussed how long the spindle's life could last, how to do well the maintenance of the spindle, and the effect of spindle aging on the spinning frame. Let's listen to their voices.

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< p > < strong > the maintenance of oil is very important. < /strong > < /p >

< p > ordinary spindle with a speed below 17 thousand RPM / min. If qualified spindle oil is used, oil is added every 9 days in winter and oil is added every 7 days in summer. The average life expectancy of enterprises spindle of Jingwei Textile machinery, Shanghai special parts, Hengyang spinning machine and Henan two spinning machine can reach 8~9 years.

If it is "lazy spindles", using qualified No. 10 spindle oil, once every three months, the life can be more than 10 years.

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< p > the key to long-term use of spindles is maintenance. Specifically, it is not contaminated with oil, oil or oil.

One is not using fake oil, the other two is to use the oil number.

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< p > there is "no shortage of oil".

The original industry maintenance standard is 6~8 days to fill the oil once (this is aimed at D1 series spindles, D3, 4, 5, 6 ingot less storage), this is scientific reason.

However, the industry situation makes it difficult for everyone to be so "real". Generally, < a href= "http://www.91se91.com/news/index_s.asp" > Enterprise < /a > are all over 10 days, or even 15 days or 20 days.

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< p > > as for "oil not dirty", theoretical data and practice verify that the wear rate of dirty oil lubrication is 2~4 times that of pure oil lubrication.

The current cleaning methods can not guarantee that the spindle oil is not dirty, which is also the structure of the spindle.

Mr. spindles < /p >.

< p > < strong > operation cycle depends on spindle speed < /strong > < /p >.

< p > ordinary spinning spindles will be eliminated in about 3 years.

The products with better quality in China can be used for 5 years, which is directly related to spindle speed.

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< p > the spindle of the spinning frame needs to run continuously for a long time, so the lubrication work of the spindle should first be done.

On the one hand, we should pay attention to the oil of spindle oil, and generally require the original refined oil from large petrochemical enterprises.

In addition, it is necessary to replace spindle oil and oil in time according to its own conditions.

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< p > the wear of spindles is more serious in the lower bearing parts, and the cleaning problem in spindle billets.

With regard to the maintenance of spindles, I think if bearings are worn, they will normally be updated. The straightening work of spindles can be carried out synchronously according to the maintenance plan of spinning frames.

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At present, the development direction of the spindle is high speed, lower speed difference between ingot and ultra-low amplitude, and so on.

After all, the spindle speed of the spinning frame in China is above 20 thousand R / min.

It is understood that India spinning spindle speed of more than 20 thousand R / min spinning enterprises accounted for a large proportion.

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< p > because the spindle speed difference of the new spindle is obviously smaller than that of the old spindle. The comparison of the performance between the new spindle and the old spindle is most obvious in the twist index.

Let's talk about < /p >.

< p > < strong > improve mechanical properties and reduce Twist Unevenness < /strong > < /p >

< p > the mechanical properties of spindles have important effects on uneven yarn twist.

We have compared the 20 spindles of C60/T40 J4.9tex varieties on the FA506 spinning frame.

The specific method is to replace the old machine spindle with the new spindle of the same type without changing the other conditions, and test the Twist Unevenness CV value of each single spindle before and after replacement.

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< p > test results showed that the twist of all spindles increased significantly after replacing the new spindles with an average increase of 10.6 twists of /10 cm, and the CV value of Twist Unevenness decreased, from an average of 6.5% to 4.5%, an average decrease of 2 percentage points, a 30.8% decrease.

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< p > the maximum twist and minimum twist of 20 spindle yarns are reduced from 28.8 cm /10 cm to 9 /10 cm. The maximum Twist Unevenness of single spindle yarn is reduced from 8.5% to 5.7%, and the yarn twist between spindles is not uniform. The CV value is reduced from original 6.2% to 4%, decreasing by 2.2 percentage points, decreasing by 35.5%, and the unevenness of each single yarn twist is consistent with the CV value of P.

This indicates that the difference between the mechanical properties of spindles and the performance of spindles is one of the main reasons for Twist Unevenness.

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< p > therefore, it is very important to improve the spindle's < a href= "http://www.91se91.com/news/index_s.asp" > Mechanical < /a > performance and improve the performance difference between spindles to reduce yarn twist unevenness.

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< p > < strong > cleanliness is the key to life expectancy < /strong > /p >

< p > the contamination of spindle oil mainly comes from three aspects: external pollution, self pollution and deterioration of ingot oil.

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Less than P, external contamination comes from ingots. It enters the ingot mainly through the following ways: the rotation of the whirlwind drives the air in the spindle disk to rotate, and the rotating air produces centrifugal force.

The air in the inner hole of the whorl produces an upward and downward movement trend. The air inside the spindle hole moves outward, causing negative pressure in the hole of the spindle, and the air outside is moving along the outer wall of the upper bearing block with dirt.

When the dirty air enters the upper bearing, the spindle oil, which is temporarily stuck on the bearing black gasket, comes out of the ingot. The dirt is captured by spindle oil and accumulated on the black gasket to form oil pollution.

When parking doffing pulls up the bar, some of the dirt is sucked into the ingots, and the spindle oil is polluted by repeated action.

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< p > self pollution is part of the metal chips and dust left behind when the spindle is made, and the metal scraps worn out at the bottom of the spindle, the spindle tip, and the worn bits of the upper bearing bearing, such as spindle, ball, outer ring and retainer.

Although the spindle is running at high speed, its overall temperature will not be too high, but when the lubrication is insufficient, the instantaneous temperature can reach the temperature of spindle oil decomposition and rancidity.

Over time, the lubricating oil in the spindle loses its lubrication.

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< p > cleanliness is the main factor affecting the life of < a href= "http://www.91se91.com" > spindle < /a >.

As for how to clean the spindle, I would like to choose the "clean oil dispenser + ultrasonic pducer" cleaning combination should be a good solution.

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< p > the principle of this scheme is that the pumping unit and the refueling machine continuously pour oil and oil into the ingot foot, so that the ingot is filled with lubricating oil. The ultrasonic pducer head contacts the lower part of the spindle foot, and the high frequency ultrasonic is pmitted to the ingot. Under the strong vibration of the ultrasonic, the dirt of the central tube, the coil spring and the bottom of the ingots quickly dissolves into the cleaning oil, and is pumped out of the ingots by the pumping unit for a period of time, and the dirt inside the spindle can be thoroughly vibrate, dissolve and extract.

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