Process and technical performance of cotton box structure

(A) No, back to flower feeding and ingesting back there is back flower suction and feeding continuous, cyclic operation exists in the amount of consumption back cotton transfer line, each stage hopper is the full amount of stabilizer, the amount of fiber storage hopper and easy Fiber density is uniform; hopper pressure is more stable and does not vary significantly during cycling. During the spinning process of the spinning frame, the semi-finished roving or sliver is drafted, twisted, and wound into a spinning machine. The combed sliver and the needle-carding machine combine the sliver, the needle row is drafted to improve the sliver structure, and the roving is further spun into spun yarn on the ring spinning frame, which is the main spinning machine. The structure of the double twisting unit of the double twisting machine mainly includes the spindle braking device, the spindle part of the double twisting machine, the yarn winding device, and the special device of the double twisting unit.

Grinder A spinning machine that turns fiber strands into rovings. The main function is to draft and twist, and to wind the roving into a certain package to meet the processing requirements of the spinning frame. Although the DMM can be made of pure cotton material to ensure uniformity and stability.

Therefore, the hopper cotton is uniform and stable, with small differences between units, and the number of card units can be multiple. But this time, only one set of cotton varieties was required to be fed, which could not be adapted to small batches and multiple varieties. After repeated strikes, some fibers and neps increased and the fiber strength decreased, which was not good for the yarn quality. The non-return cotton feeding can meet the requirements of enterprises in small batches and multiple varieties, and can process 1-2 varieties, and can analyze and adjust the number of our different types of cards and the number of cards, and there is no recycle amount of repeated use and circulation. , which is beneficial to the development of yarn quality.

However, it is not possible to feed cotton without re-flowering. It can be fully filled at the same time. The filling level of the head, tail and the middle machine is different. Therefore, the number of carding machines should not be too many. Generally, 6-10 cards are used. should. This is especially true when using an intermittent discontinuous feeding. (2) There are three ways to feed cotton between intermittent and continuous cotton without returning flowers: (1) The differential pressure switch in the pipeline makes the feeding roller of the last cotton picker stop intermittently, At this time, the amount of cotton feeding is constantly changing or constantly changing, and the fiber capacity of each cotton box changes periodically between the upper and lower limits. To a certain extent, the output of the cotton box changes periodically between the table differences. Tables vary.

Special attention should be paid to the short length of the pipe from the fan to the first carding machine for the last manual cleaning machine to reduce the delay time of feeding and downtime. There is still pipe inertia cotton in the pipe, and its length is proportional to the pipe length. When starting to feed cotton, the cotton flow cannot reach each cotton head in time, causing the pipeline to be blocked, causing the cotton volume in the upper cotton box to be too empty, which is not conducive to the uniform cotton output.

When the carding machine is driven slowly, the amount of established cotton is reduced, the total amount of cotton is reduced, and the cotton force feed roller to reduce the operating speed to balance the cotton supply and demand, the worse disadvantage is the intermittent feeding of the cotton flow. This defect is ameliorated by the level potential Rieter level, which makes the number of feed mechanisms suitable for starting operation. (2) The differential pressure switch controls the speed of the feeding roller of the cleaning machine. It can continuously feed the cotton, fast or slow or stop, and the feeding amount also changes periodically. However, compared with each intermittent feeding, there have been studies improve.

(3) The pressure and sensor are used to control the cotton-feeding roller. The car continuously feeds the cotton. Although there are still some fluctuations at this time, no matter the amount of cotton stored in the upper cotton box or the difference between the stations, the strength has been greatly improved. Improvements, such as Trützschler's CF continuously variable mechanism for continuous cotton feeding. It better solves the problem of providing uniform design and control of cotton feeding without returning flowers, and ensures the uniform feeding of cotton in the upper cotton box, which is more beneficial to quality management. Since the operation rate of the enterprise is 100%, the opening degree and impurity removal efficiency of the last cotton cleaning machine are improved.

(3) The structure of the upper cotton box and the structure analysis of each uniform cotton distribution box and the main control system device used can directly affect the drop rate and the amount of cotton dropped by the cotton matching head of the upper cotton box, and then produce an impact box. The amount of stored cotton and its development density.

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