Comparison Of Collective Doffing Performance Of Artificial Doffing, Intelligent Doffing Trolley And Long Car In Wuhan

Based on the analysis of the three doffing methods of the Wuhan Jiangnan group, such as the artificial doffing, the smart car doffing and the collective doffing, the readers can see which doffing methods are more suitable for themselves according to their actual production conditions.

current Spinning enterprise Encountered unprecedented difficulties: high cost of raw materials, recruitment difficulties, high cost of labor has become the norm. Although the intelligent doffing car can solve the problem of higher labor cost, intelligent car is a new thing. Its application is related to the yarn production and management level of the spinning enterprises. It is precisely because some enterprises because of poor management and other reasons, there are some problems when using the smart car, so many spinning enterprises still hold a wait-and-see attitude towards the use of intelligent doffer car.

　　 Smart car doffer time is short.

The retention rate is slightly lower than the collective doffing.

Tongling song Bao Machinery Co., Ltd. in 2010 launched intelligent doffer car, so far has been 4 years. In the past 4 years, the intelligent doffing car of song Po has been recognized by the user enterprises. The number of users of the intelligent doffer car is also increasing. Over the past 4 years, the sale of song Bao intelligent doffing car has achieved a great breakthrough. In 2013 alone, the company set up 380 automatic doffing cars for the domestic 2 million 300 thousand spindles.

At the end of November 2012, Tongling song Bao Machinery Co. Ltd. reached a cooperation intention with Wuhan Jiangnan group. The Jiangnan group used the song Bao S9 intelligent doffer to transform the 100 thousand spindle spinning frame.

At present, the three doffing forms of artificial doffing, intelligent doffing car and collective doffing of Wuhan Jiangnan group coexist. The company records and compares three kinds of doffing, and through the analysis of test data, we can see the difference between the three doffing forms.

Through the production practice, Wuhan Jiangnan group found that the single doffing time of manual doffing and collective doffing is over 500 seconds, while the intelligent car's single doffing time is less than 400 seconds. It can be seen that the single doffing time of the smart car is faster than that of the other two doffing forms for more than 100 seconds; the head retention rate of the intelligent car doffing is 94.6%, while the collective doffing head retention rate can reach 97%, and the collective doffing is slightly higher than that of the intelligent car's doffing. In terms of employment, the artificial doffing of 11544 spindles (26 sets) is 6 people, the intelligent doffing 24000 spindles (50 sets) use 3 people, the collective doffing 22288 spindles (22 sets) uses 2 people. Through comparison, we can see that the intelligent doffing employment is slightly more than the collective doffing. There are two reasons for this result: one is the lower head retention rate of intelligent doffing, and the other is the heavy workload of intelligent doffing. If these two problems are improved, it is certain that the employment of intelligent doffer car can achieve less than that of collective doffing long vehicle.

There are many factors that affect the retention rate, such as the reliability of "three automatic" (full yarn self stop, automatic lowering of the steel collar plate to the doffing position, automatic positioning of the initial position of the steel collar plate after the doffing), the braking accuracy, the rise and fall of the collar plate, the speed of starting the car, and the varieties that are spun, but the doffing device is the main factor. Improving the retention rate has always been the main subject of the intelligent doffing of song Bao. S9 intelligent doffer has a number of patented technologies to improve the retention rate. The application of these technologies has effectively improved the broken ends during doffing. The retention rate of the loose S9 intelligent doffer is more than 93% for the customer commitment. In general, the customer's S9 head is still acceptable. In order to improve the doffing efficiency and shorten the gap with the colony, song Bao will also introduce a number of improvement measures, and strive to keep the head rate to the colony level.

　　 Improving the automation level of cars

Greatly reducing the employment of enterprises

It is undeniable that the S9 intelligent doffer has more auxiliary actions in the whole doffing process: 1 doffing dancer with each doffer and a group of 2 persons in charge of doffing, driving and birth work. Because the situation of each mill is different, especially when there are more novice, it is not common for 2 people to undertake the whole work. In most cases, 3 people still need to work, so reducing manual assistance is particularly important. At present, song Bao company has launched a new solution to this problem, that is, group control tour automatic doffing system. The system promises 1 people to take all the doffing work of 2 doffer machines. If 2 people cooperate, the system can complete the hygiene and cleaning work.

No matter which doffing way, the customer chooses the reason is very simple, that is to save labour, invest and save materials. From the analysis of investment cost, there is no doubt that the investment of collective doffing long cars is almost 3 times that of intelligent doffing cars. From the analysis of consumables, the collection needs to be supplied to each spindle, not only with a large quantity of consumables, but also with many shortcomings. The intelligent doffer is a multi tube unit with the advantages of less quantity and less maintenance. As time goes on, the quality of the machine parts of the intelligent doffer will also be improved, and the consumables will be less and less. The development of collective doffing long vehicles has gone through over 20 years, and the current consumables have also been greatly reduced.

　　 Intelligent doffer potential to be excavated

Short cars can also realize fine coupling.

At present, the S9 intelligent doffer is the only short board compared with the cluster. And the only way to reduce employment is to further improve and improve the automation of the S9 intelligent doffer during the whole doffing process, greatly reduce the dependence on manpower, and achieve the goal of saving labor. The group control tour automatic doffing system launched by song Bao will solve this problem very well.

Now Fine coupling It is also the most effective way to reduce labor in spinning workshop. The length of spinning frame is getting longer and longer, and its purpose is to improve the efficiency of the thin thread coupling. However, there are not many applications of thin link equipment in the market. There are many reasons for this. For example, in addition to technological problems, technical problems and other reasons, high investment cost is also a major problem.

In recent years, many textile enterprises are willing to spend a lot of money on buying long cars. The real purpose is to save people. In order to meet the needs of multiple quality and small quantities of customers, spinning mills really feel good about spinning short cars. Is it possible that a short car can not achieve thin links? The answer is, of course, No.

At present, Big yarn Library Flip bucket winding machine has been on the market. The feature of the bucket type winder is that it does not need a direct connection between the spinning frame and the winder. It should be said that the tipping bucket winder is more suitable for China's national conditions. But at present, the popularity of this winding machine is not very fast. The main reason is that the yarn is difficult to find and needs manual assistance, and it is not suitable for the bobbin of the polished rod spindle.

However, there are solutions to these two problems. The S9 intelligent doffer can meet the requirements of the winding process through the program control during the doffing process, and it can greatly improve the efficiency of the winder. The Boehner /E Premium full automatic winding machine, which is produced by the company, can process tube yarn produced by spinning machine without automatic doffing device. In addition, the QPRO-VCF automatic winding machine introduced by Murata in Japan can also pipe the yarn dropped by the polished rod spindle. Murata's machine was successfully integrated with a S9 intelligent doffer in a spinning mill in Shandong.

Through the analysis of the production practice data of Wuhan Jiangnan group, we clearly see that S9 intelligent doffer is worth exploring together in terms of meeting the needs of the production process, saving the labor potential and saving the investment. We have reason to believe that the S9 intelligent doffer is not a transitional product, nor is it an expedient measure.