Problems Existing In Textile Machinery Plant'S Digestion And Absorption Of Imported Equipment

The running in period of domestic equipment is higher than that of imported machine.

Running in period usually refers to failure rate, reliability and quality stability.

Although the domestic machine has made great progress, there is still a great deal of difference in equipment stability, failure rate and so on. Usually, the failure rate of imported machines is still relatively high in the first few months or even six months.

There is still a big gap between the blowing carding system, the spinning long car and the automatic winding machine.

Foreign equipment running in period is usually half a month, some domestic equipment may be several months or even more than half a year.

There are several reasons why the running in period of domestic equipment is higher than that of imported machine.

The first is the key parts.

Such as domestic

Two, mechanically copying components on foreign equipment failed to really understand its functions and principles.

For example, the brush holder device of the carding machine can not touch the cover even if the brush roller shaft is adjusted to the lowest position, so that the cover plate is always not clean.

The length of spinning automatic doffing increased from 504 to 1008 ingots, and the torque of mechanical pmission increased obviously. However, it did not work hard on key parts such as the roller seat and the forming cam material, heat treatment and processing, causing the above parts to wear quickly, and their life expectancy could be imagined.

The three is the unstable performance of the equipment.

For example, a domestic high-yield carding machine is more sensitive to temperature and humidity. The speed of the machine can be 160~170m/min (quantified 5 grams / M) in the spring and autumn season, but in the summer and winter season, it is high temperature, high humidity or low temperature and low humidity (especially in the middle of the night). The doffer speed is generally 150m/min, and the side door of doffer must be opened to make up the wind, otherwise it will increase the breakage.

The reason may be related to the lack of accuracy due to the lack of accuracy of the steel cover plate due to the accuracy of the doffer leakage.

The four is that the relevant technology is not in place with the matching process, so that the technology can not really get on the bus for a long time.

The most typical is the carding machine parts processing accuracy and installation accuracy can not reach international similar products.

Differences in efficiency and humanized services of domestic equipment

Yufeng company introduced the world class advanced equipment last year, all equipment product manuals have hundreds of pages, the instructions are very comprehensive, meticulous and standard, while some domestic similar products have few pages.

Foreign equipment has repeatedly emphasized the importance of safety in every instruction manual, and is more suitable for the fact that factory operators are lowering their operational skills at the present stage. There is a detailed explanation and decomposition of every functional component and device on board.

The responsibility and meticulous attitude of foreign equipment to users is admirable.

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voice

"The company has 20 sets of Italy Savio automatic winder.

The machine has high technical content, each ingot can show the quality of on-line dry, yarn fault, Mao Yu and so on. The speed can reach 1500 meters per minute. The same kind of equipment made in China is only 600 meters per cent; the knot head and yarn change are fully automatic, and the yarn is formed well. It is good for the high speed production in the next process, the quality of the knot is stable and the consistency is strong.

An automatic winding machine only needs 1 people / class, but the domestic winding machine needs 6 people / class.

From the quality, performance and employment of the products, the domestic machine and imported automatic winding machine are not comparable.

"Imported carding machine and home-made machine, the same production, the same quality, output is more than 20%.

The company has 15 sets of Swiss rith comber. It has been running for two years without any defects. It is stable and reliable, and its output is 25% higher than that of domestic equipment.

The company also has 3 domestic comber, compared with the imported comber, the output is low and the failure rate is high.

The "domestic blowing carding unit" is open and open, and some debugging is difficult to enter normal operation for a month.

The imported blowing carding unit has been successfully debugged for a week and it is normal to start.

Cradle is one of the key components to ensure yarn quality and consistency between ingot and spindle.

Importing German leaf spring cradles, suppliers dare to promise constant pressure to maintain 30 years without failure, we can see the quality of imported cradles.

"The company has Swiss riedle air spinning 7 sets and 2500 heads. The equipment is highly efficient and efficient, and the spinning speed of the spinning can reach 105 thousand rpm, and it can use 32S low quality cotton yarn.

The spinning speed of the domestic spinning rotor reaches 80 thousand revolutions per minute and the highest spun yarn is 21S yarn.

German automatic winder is perfect.

The equipment not only has frequency conversion device, but also has a filter to prevent grid interference. The equipment runs stably and reliably. It has been running for two years and there has not been any fault.

"The company owns 3 sets, 6 lines and 48 units (carding machine) of the British Rolle Crosroc combing unit.

The equipment is characterized by high efficiency, low breakdown and less employment.

When the output reaches 46 kg / platform, it is 15% higher than that of domestic similar equipment at 40 kg / stage, and the yarn quality reaches 5% of the Ulster communique.

The daily production of 6 workers in three shifts is 1/3 less than that of domestic equipment.

"Imported spinning frame has high efficiency and spindle speed can reach 16000 revolutions / points. The domestic spinning frame can only be opened to 15000 rpm; the collective winding can be completed in 2 minutes and 30 seconds. The domestic spinning frame needs 6~7 minutes, and the imported spinning frame is 1.8 times faster than the domestic machine."

The instructions of the import blowing carding unit are very detailed, operating, maintenance, electrical appliances and so on. They are clear about the location, operation procedure and fuel cycle.

However, the homemade equipment, the same type of configuration changes frequently, specifications, parts and objects do not match, about 20% of the parts can not match, causing trouble for installation, labor, time and effort.

"The company has 27 sets of automatic winder in Germany, and the quality of the knot is very good, the nodes can not be seen, the consistency is good, and the knot strength can reach more than 85%. The panel design is humanized, on-line detection is implemented, and the operation state of the equipment can be reflected at any time.