Selecting Carding Components To Improve The Efficiency Of Carding Machine

< p > < < a href= > http://www.91se91.com/news/index_c.asp > comber > /a > also known as high efficiency comber is a comber which consumes lower production cost and achieves ideal output and quality at higher production speed.

With the development of combing machines to high speed and high quality, whether high quality carding can be achieved has become an important criterion for the success or failure of new combing equipment research and development.

In recent years, high speed comber, which has been launched at home and abroad, has high speed (design speed of 450 times a minute / minute), large capacity, high carding frequency, and designed output of 65 kg / h.

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< p > the main features of this kind of carding machine are: to reduce the motion inertia and acceleration of the machine as the target, adopt the Xilin pmission mode, the new material Xilin bow plate and the new clamp plate feeding method; in order to reduce the high speed running of the front roller to damage the fiber drafting, the drafting mechanism is optimized, that is, the drafting mechanism with three upper and three lower pressure bars is adopted, and the free fibers in the drafting area are effectively controlled, so that the fibers of different lengths are more concentrated and attached at high speed. Under the condition of high speed, the carding elements are optimized to achieve stable qualified carding effect, that is, the new type of cylinder and top comb suitable for high speed.

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< p > < strong > choose to adapt to high speed Xilin < /strong > < /p >.

< p > there are many factors that affect combing carding, such as cylinder speed, carding spacing, small coil quantity, brush cleanliness, length of cotton feeder, cotton feeding mode, noil spacing and carding elements.

These factors have different effects on carding degree.

Because the important feature of < a href= "http://www.91se91.com/news/" > New comber < /a > is high speed carding, the selection of carding components is becoming more and more critical.

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< p > usually combing carding elements refer to combing cylinder and combing top comb.

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< p > although the new comber has adjusted the process of positioning, separation and bonding of Xilin, the carding time of cylinder has been reduced by 30%, but the carding degree of cylinder does not decrease with the decrease of combing time.

In order to avoid damage to fibers caused by Xilin's carding process, some Xilin production enterprises have made special improvements for new comber: the cylinder linen rows are taken from thin to dense, coarse to fine arranged, and the angle of the needle teeth and the shape of the back teeth have been redesigned, making it easier for the cotton layer to be fully grasped in the process of high-speed cutting, avoiding the damage of fibers due to the strong effect of fibers on the first comb.

In the promotion of Xilin, special emphasis is placed on the use of heavy and quantitative processes to improve the cleaning effect.

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< p > high speed and heavy weight process is generally based on the self cleaning effect of the corresponding friction between cotton rolls.

The so-called self cleaning effect of cotton rolls is the control of impurities, < a href= "http://www.91se91.com" > neps "/a" and short fibers because of the large internal fiber disorder.

Generally speaking, the larger the weight of the cotton rolls, the thicker cotton layer, and the denser top comb process, the increased friction between the fibers and the fibers, that is, the increase of the control power in the cotton layer and the short pile, so that the clearance effect is more obvious in the carding process.

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< p > < strong > the density of Xilin is as much as /strong > /p >

< p > the density of cylinder is directly related to the carding degree of comber, which is a very important technological parameter.

In the face of complex a href= "http://www.91se91.com" > fiber > /a > raw materials, processing equipment, processing technology and yarn requirements, single tooth density configuration sometimes can not meet the quality needs of different varieties.

Therefore, in addition to having a reasonable structure and optimized sawtooth geometry, such a cylinder should increase the total number of teeth as much as possible under the premise of sufficient fiber capacity.

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< p > at the same time, in order to adapt to the high speed and heavy weight process requirements, avoid the weakness of the front row saw teeth penetrating the cotton layer and achieve better insertion, loosening and finishing, the designers integrate the advantages of the needle cylinder and the saw toothed cylinder. The first two rows use the comb needle teeth, the front row has large working angle, and the working angle is reduced by row, so as to ensure the best puncture effect.

The improvement of the depth and depth of the needle teeth of the comb needle and the tooth piece can reduce the filling area of the fiber, improve the working position of the fiber in the needle tooth piece, and improve the ability of the needle tip to aggregate fibers and the carding effect.

In this way, the tin forest is consciously divided into the front and the back two zones. The carding needle group is arranged in the front area, and the sawtooth cylinder structure is used in the back zone to ensure the carding quality under the condition of high speed movement.

It can be used for various types of combing machines such as low speed, medium speed, high speed, constant speed and variable speed.

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< p > production shows that the index of the dense toothed Xilin process is better than that of the medium density gear type Xilin process.

Therefore, for the above high a href= "http://www.91se91.com" yarn > /a > in spinning, especially when users want high quality yarns, besides selecting a reasonable process configuration, special attention should be paid to the selection of carding elements.

When spinning long fibers and higher count yarns, the improved density carding elements can be selected to obtain more stable and excellent product quality.

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< p > heavy and quantitative use of high density top comb < /p >

< p > there is another key element, the top comb, for carding components except for tin forest.

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< p > after the cotton web is jointed, the cotton is separated by rollers, and the top comb is inserted into the cotton bushes. The comb is used to comb the back ends of the fibers, and the short fibers and neps and impurities are blocked into the small part of the previous combing loop, and the long quality fibers are separated.

The top comb itself does not remove short staple and neps, and the top comb acts like a filter, blocking short lint and neps that need to be removed, and clean long fibers can separate the past.

The greater the density of the top comb, the stronger the filtration effect for neps. The greater the degree of confusion and the thicker the cotton layer after filtration, the enhanced self cleaning effect of the fibers after the top comb.

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< p > under the same technological conditions, CJ18.2tex and CJ5.8tex yarns were tested with top comb teeth density of 26 needle / cm, 28 needles / centimeters, 30 needles / centimeters respectively. The results showed that for the new spinning process with high speed and heavy weight, the higher carding density top comb was matched with the corresponding cylinder to achieve better carding effect.

Therefore, the new high speed comber is recommended to use 28 pin / cm top comb.

When spinning CJ18.2 yarn with special or lower number of yarns and relatively low quality requirements, a lower tooth density carding element can be selected under high speed, heavy weight and low dropout process configuration.

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< p > in conclusion, the new comber has unique motion characteristics and is different from the combing elements in general comber.

In view of the more conventional yarn varieties in China, the carding elements suitable for carding degree of new comber can be divided into medium density type and high density type. Two types of cylinder have their own advantages.

Medium density cylinder is suitable for medium and high speed, medium and long fiber high and low branches < a href= "http://www.91se91.com" > yarn > /a > spinning; improved high-density cylinder is more suitable for medium and high speed, high side yarn and high quality requirements, but the speed is generally not up to the limit of vehicle speed; the spinning of low count yarn generally chooses low density cylinder.

According to different customers' needs, we can choose suitable process plan and carding element configuration, and get better economic benefits.

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