Cotton Blend
  • Cotton Blend
    Although most of the machines do the opening, cleaning and mixing operations together, one of these operations is handled more heavily in each machine..
    For example; If one machine prioritizes opening, another machine that prioritizes cleaning will follow. The better the opening, the better the cleaning can be done. With the developing technology, manufacturers are constantly innovating in machine processes and technologies.
    In carded and combed spinning, the threshing begins when it is fed to the first machine in the blowroom. The threshing process can also be continued by mixing different materials with cotton during feeding to the drawing machines.
    Cotton spinning blowroom and machines can be divided into three groups.:
    1- Placing the bales in the threshing according to the threshing recipe
    2-Machines used in opening bales
    3-Opening and cleaning machines
    Placing the bales in the threshing according to the threshing recipe
    Depending on the properties of the yarn to be made, the bales are placed around the threshing machine according to the threshing recipe prepared in advance. He writes the instructions for use as the doctor tells. You use these drugs.) Here is a written document in the Harman prescription showing the weight of fibers of various qualities and types. (Like the prescription given by the doctor).
    The circles around the bales taken into the blowroom circle are cut and the cross-stitch is removed.
    In order for these cottons in the form of bales to work comfortably under operating conditions, they should be kept for 20-24 hours in air-conditioning conditions at a temperature of 50-65 ºC and a humidity of 24-48%.
    The purpose of this is to open and swell the cotton masses that are compressed due to the press during baling and to have the desired climate conditions. As a result of the researches, it has been seen that the cottons are opened and blended better at the specified values ​​and it is easier to clean.
    After the bales gain the desired properties, the process of opening, cleaning and blending is started with the bale opening machine.
    Machines used to open bales
    Opening: It is the process of opening and mixing different or same origin bales by machines. The aim is to eliminate the differences between fiber groups.
    It is the first machine to feed baled cotton in modern blowrooms. These machines replace bale opening machines in today's spinning mills. Bale plucking machine is a machine that provides a uniform (homogeneous) mixture by plucking the fibers from a certain number of bales in small tufts.
    Opening and cleaning machines
    Opening (forging)-cleaning and condensing: It is the process of opening cotton groups in tufts by mechanical methods and separating the foreign materials in them. At the end of this process, a lap form is formed or a structure similar to this form is added to the fiber groups (For example, condensation at the end of pellet feeding). Due to the environment in which cotton fiber is grown, it may contain substances such as dust, garbage and seed shells. Cleaning them takes place with these machines.
    Mono (single) roller opener
    Mono roller opener is an effective cleaning and dust separating machine used right after the automatic bale opener (blendomat, unifloc). It processes small tufts of material from “Unifloc”. It removes foreign matter, fiber fragments and dust. It is designed for intensive cleaning.
    Machines have been developed in which the cleaning effects of openers are increased by air flow. Principle; It is the separation of foreign materials from the cotton by not complying with the air flow, while the fiber tuft moves according to the air flow.
    Working principle of the machine; As the cylinder, which is covered with nails, opens and pulls on the cotton layer, thinning it and the fiber layer moves with the air flow, the cotton layer becomes thinner.  It is in the form of separating the heavy foreign materials that are released with the loosening of the fiber from the fiber by pouring them into the waste chamber through the grids. PDuring the roses, the raw material is passed through the integrated dust separation filter, where dust, fiber particles and seed pods are mechanically cleaned. This cleaning process takes place in a controlled and effective way with air flow..
    ERM opener machine
    ERM opener (uniflex-rieter) is a fine cleaner for natural fibers. Thanks to the electronic control, it can be adapted to all the requirements for the raw material and the product produced. The waste separated in the machine can be easily taken for analysis. Waste analysis can be done visually or with an analyzer.
    Interconnected parameters such as cleaning efficiency, fiber damage and fiber loss detection can be tested in each cleaning process. Its design is quite simple. Thanks to the single roller, negative effects such as neps increase and loss of good fiber encountered in multi-cylinder cleaning systems are minimized.
    The fiber, which is sucked by a fan that provides air flow, comes to the feeding chamber (lamellar silo). The material is transmitted to the back wall of the duct to aluminum lamellas with holes through which air can pass. Here, the air carrying the dust and foreign materials that come with the fiber between the lamellas is sucked and the material is cleaned to a certain extent, the raw material remains in the channel and condenses. Before the material from the feeding hopper reaches the feeding rollers, the dust inside is sucked back by the dust cage. Then, the delivery roller is fed to the steel wire clothing-coated opening roller. The opening roller opens the cotton tufts coming from the delivery roller with its strokes. It allows the foreign materials in the cotton, which is opened by hitting the grids, to fall into the waste chamber under the grids with the effect of the centrifugal force. The material leaves the machine through the exit channel.
    Unimix threshing machine
    The material is fed into eight silos simultaneously and uniformly. The dust in the carrier air is systematically separated from the fiber and delivered to the filter unit. This integrated dust removal method is very effective and reduces ends down on spinning machines.
    This machine; It consists of three parts as storage, middle and exit parts. The fiber tufts are fed pneumatically from the feed chute to the machine, into eight mixing chambers. Mixture as many as the number of feeding chambers is provided on a conveyor belt and fed to the needle mat. The excess material on the needle mat is poured into the mixing chamber by the roller and the threshing effect is increased. The mixing chamber is controlled by an optical probe and the fill rate is adjusted. The fiber tufts remaining on the mat are taken by the receiving cylinder and conveyed to the next machine by the pneumatic conveyor system.
    In the threshing machines, better mixing of the fibers is ensured by connecting them one after the other.
    Fine cleaning (cleanomat) machine
    Feeding a cleaner of the Cleanomat system by the multiple mixer gives very positive results. The multi-mixer provides the cleaner with an ideal and homogeneous lap.
    In order to fully adapt to the raw material, there are 1-4 opening and cleaning rollers in this system. In the Cleanomat series, there are 2 scraper blades under the first roller, a fixed scanning plate after the first blade, and 1 scraper blade under each roller, a suction head and a guide blade in front of it. It is known that the trash separated from the cotton in the grid system is sucked back into the corner of the grid. This error has been completely corrected in the direct suction system. Waste and dust separated from the cotton are instantly absorbed by the suction air and removed from the system. The direction of the guide vane can be adjusted as desired against the blade direction. In this way, the amount of waste produced can be determined. Although the selection and positioning of these rollers and thus the clothings depends on the quality of the cotton used, the raw material is whitened in accordance with the basic rule of the opening According to the direction, rollers with coarse clothing take place first, and rollers with fine clothing take place after.
    Dust extraction machine (dustex) machine
    If the cotton is opened very well, the dust inside is removed. That's why dustex; It should be used after the delicate opener and before the comb. Dustex is fed and sucked by a fan. Dustex is of particular importance in OE spinning mills. Micro-dust, which collects in the rotor cavities and causes yarn breaks and yarn defects in the form of thick places, can be sucked in this machine.
    Coarse and fine dust in cotton can only be removed after the cotton has been well opened. Therefore, the dust extractor is used in the cleaning line after the fine opener, ie just before the carding machine. As the fibers pass through the channels or during operation, the dust contained in the fiber elements is removed by suction with air suction. The fiber coming out from here passes through metal separators before coming to the card. The material passes in front of a metal detector. In previous processes, the metal remaining fiber is dropped into another chamber. The separation of metals in the fiber prevents the possibility of fire and damage to the wires, especially in the card.
    pellet feeding machine
    The cleaned and opened fibers in the fine cleaning machine reach the continuous fiber feeder machine integrated into the carding machine through the air duct. The task of the fiber feeding machine is to feed a fixed amount of fiber to the carding machine.
    In the new machine systems, by integrating the fiber feeding machine into the carding machine, it functions the same as the delivery roller assembly of the feeding table and the feeding roller of the carding machine.
    The fibers coming from the transport channels are filled into the upper chamber used as a reserve; then the air between the fibers is sucked in with the help of the grids in the narrow reserved channel; the fibers condense and move towards the feed roller. The feeding roller compresses the material by means of the spring elements on the feeding table and turns it into a fiber layer of certain thickness. Immediately afterwards, the material in the form of a layer is delivered to the opening roller and the opening process is started. The opened fibers pass through the second silo and before the wadding is formed in the second chamber, the separation of the air between the fibers is performed again. The opened fibers are then condensed in the form of laps thanks to the feeding table moving with a spring. Thanks to the measuring arm connected to the spring elements on the feeding table, mass deviations that may occur in the lap are controlled. If, as a result of the control, a value different from the reference value is detected in the lap thickness, it is automatically regulated.
    The system is also equipped with a mechanism that will stop the machine by detecting metal parts that can be seen on the case and cause damage to the card. Cotton fibers, which take the form of wadding with a certain fineness, are fed from the fiber feeding machine to the feeding cylinder of the carding machine..
    Posted by %PM, 03% 794% 2016 20%:%Mar in Yarn

Cotton Blend