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Reasonable Distribution Of Card Clothing To Improve Nonwoven Carding Quality

2014/5/13 23:30:00 38

the double doffer fiber net has uniform compensation effect, and the disorderly roller makes the mesh fiber arranged in disorder, and reduces the vertical and horizontal strength difference of the product.

The modern carding machine is developing to serialization, and the user enterprise can be combined according to the requirements.

At present, there are three combinations of single Sn single track, double tin single channel and double Sn double track, but various combinations include feeding system, pre combing system, main comb system, output system and pmission system, and the organic combination of each system constitutes the carding process of nonwoven production line.

carding machine spacing determines the size of the carding force of the fiber in the working area.

The width of the carding machine is small, the working area is enlarged, the working roll is hung up a large amount, the extrusion pressure between the fibers increases, and the working roller and the cylinder are capable of grasping fibers.

But combing the gauge is not as small as possible.

When the carding force is too large, it is easy to damage the card clothing. When the feeding volume is large, the fiber volume in the working area is large, and the amount of fiber in the working roll is large, the spacing can not be adjusted again.

The gauge decreases from the front to the rear, and the main cylinder fiber is finally combed. At this time, the spacing is small and it is not easy to tear the fibers.

velocity ratio < a href= > http://www.91se91.com/news/index_c.asp > fiber > /a > carding pfer ability /p >

when the working speed of the carding machine is larger than that of the carding machine, the amount of fiber to the work roll is more than that of the carding machine.

Speed ratio generally increases from rear to small.

The speed ratio should be determined by the looseness of the feed material. When the speed ratio is large, the fibers that are not loose will be more easily damaged.

Increasing the speed of Xilin can increase the speed ratio and increase the speed of the work roll, which actually reduces the speed ratio.

The ratio of Xilin to work roll ratio, speed ratio between tin and doffer, doffer and miscellaneous roller speed ratio, miscellaneous roller and miscellaneous roller ratio should be reasonably set according to the requirements of different products.

in order to better achieve the pfer ability of the fibers, the card clothing rack of the nonwovens carding machine has some properties: good puncture and fiber holding ability.

The working angle makes the fiber often at the tip of the needle tooth. It has good fiber pfer ability, that is, the proper working angle and smoothness, no burr, and no physical compulsion to the fiber, so that the fiber can be well combed and appropriately pferred. It has good tooth profile and backlash capacity, that is, having reasonable working face shape and suitable tooth back angle, which can accommodate a certain amount of fiber and have good suction capacity to improve the even mixing effect of the carding machine. With proper tooth density, the higher the density of the card clothing is, the higher the density of the card clothing is. That is to say, it has good sharpness and Appropriateness.

to achieve full carding, < a href= "http://www.91se91.com/news/index_c.asp > > carding machine < /a > all parts of the card clothing should follow certain rules of configuration.

That is, feeding the needle roller part: the card clothing teeth should be high, large, and the intensity should be large and the working angle should be large; the Xilin part: the overall height of the card clothing is generally small, which is 2.5 millimeter ~4.2 millimeter, the working angle is bigger, is 70 degree ~83 degree; the tooth tip is sharp and the negative angle is designed; the density of the pre carding cylinder is smaller than that of the main comb cylinder, and the height and the base thickness are larger than the main comb cylinder.

Doffer and work roll part: the working angle of the card clothing is small, it is 45 degree ~65 degrees, the depth of the tooth is deep, and the volume of the fiber is large.

Condensing roller part: the working angle of the card clothing is small, it is 45 degree ~55 degree, the tooth depth is deep, and the volume of fiber is large.

Generally speaking, for the same type of roller, from feed to output, the following three basic rules should be followed: the height of the teeth is getting shorter and shorter, the density of the teeth is more and more denser, and the working angle of the Carding Clothing is getting smaller and smaller.

there are special requirements for carding environment .

< < a href= > http://www.91se91.com/news/index_c.asp > > non woven carding > /a > has certain requirements for production operation and environmental production requirements.

For example, in the production process, we should improve the loosening effect of the preceding process and reduce fiber damage.

It is not conducive to mesh formation, but also reduces the strength of the needle blank, reasonably designs the speed ratio, the spacing, appropriately adding water and oil additives, controls the feeding quantity and so on, reduces the fiber strain, reduces the uneven mesh and cloud mesh spots caused by the holes in the mesh, uneven thickness, unexpected drafting, static electricity, air flow and other factors; too much combing force or too much spacing will produce hairy grains; it is necessary to check the metal alarm of the feeding rollers regularly; if the metal alarm should be found, the metal can be driven behind; pay attention to the problems such as belt tightness, curtain deviation, machine hygiene, the surface of the card clothing, the pfer of card clothing, the entry of foreign objects, the entry of foreign bodies, the rustiness of the needle clothing and the bottom leakage. Because fiber is pulled.

carding machine is a high-risk equipment, which is prone to accidents of human body and equipment. Therefore, it is not allowed to open the protective door during operation, and it is not allowed to stand on the machine platform and strictly prohibit the body from touching the rotating parts directly.

When dealing with problems such as Xilin filling, doffer returning to flowers, agglomeration of rollers, etc., it is not allowed to handle while driving. No bamboo sticks or brushes should be inserted into the machine to avoid accidents.

When you stop, you must see if all the parts are stationary, see whether the power of the console has been cut off and whether you have put up the safety warning signs. When you are born again, be careful with the pmission parts around you to prevent accidents.

in the production process of needle punched nonwovens, temperature and humidity and oil additives have great influence on production.

Due to certain friction between fibers, it is easy to be broken under the condition of strong carding. Therefore, some water and oil additives should be added to production.

The purpose of adding water is to make the fibers have a certain moisture regain. The purpose of oiling agents is to soften, lubricate, and prevent static electricity.

under normal circumstances, the temperature is 20 C ~30 and the humidity is 50%~60%, which is most conducive to the production of needle punched nonwovens.

High temperature, high humidity, high moisture regain, easy to pull, pull, and other parts of the Carding Clothing is also undesirable, easy to cause needle clothing to fill; temperature bottom, moisture regain is too small, raw materials drying, carding process prone to static electricity, fiber damage, flying more, increase consumption; add oil can make the fiber soft, lubrication, reduce friction coefficient, and maintain a certain moisture regain, to prevent static electricity.

Therefore, in the production process should pay attention to temperature and humidity and oil control.