(A) Separation and separation of the bonding process after combing the short-length fibers of the combed Xinjin long-end aligned bundle. 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.
Carding machines are used to process cotton fibers and chemical fibers and belong to textile machinery. According to the spinning process, carding is an important process. The front process of the carding machine is the opening and cleaning machine, and the latter process is the drawing frame (carding process) or the sliver coiler (combing process).
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. When the nipper, the separated top combs are gradually fed to the separation claw, and reach the first jaw in front of the fiber tip for separation, which drives the separation roller forward at a faster surface speed, and each reaches the head end of the fiber and separates after The claws, which are displaced between the fibers to generate front and rear pitch changes, gradually discharge the fibers from the fiber bundles formed by a pair of separation rollers, separate the fibers superimposed on the tail of the cotton web engagement on a work cycle. The clump separation length can be calculated from the separation roller motion curve, as shown in Figure 3-35.
When the plot points are reversed, b is the end of the pin that passes through the tightest point, c is the clockwise point, d is the separation start point, e.g. at the assembly split point, f is a point where a first jaw separates into a fiber , the fiber lasts 2 to the separation paw. After the first fiber head end of the FA261 carding machine reaches a separation jaw, the time cost to start separation is about 17.5-19 divisions, and the last nerve fiber head end enters the Chinese separation jaw to end the time for self-separation. 24 divisions. Therefore, the distance from the head end of the first and last fibers in the separation bundle must be the difference in displacement change between the separation roller and the enterprise on the motion curve when separation begins and separation ends.
Example 2: A201D type carding machine, the separation is 12 degrees at the beginning, and the separation is 19 degrees at the end. Looking up the table, we can see that the separation clump length L is related to the analysis of factors such as the starting time of separation work, the different time when separation ends, the basic shape of the movement curve of the separation roller, and the length of fibers processed. The above analysis is not just an ideal development situation, the actual separation and bonding process is much more complicated.
For example, factors such as different selection of raw cotton varieties, different previous processing, different and non-uniform fiber length distribution in manuscripts and small rolls, and the irregularity of fibers in the separatist movement can be used to study the method of separating clump length by calculation technology. It's just that we roughly represent the case of separation bundles. (2) The variable stretch value of the separation process is also the drafting process of the separation piecing stage, because the output speed of the separation roller VI is the input speed of the large top comb to the fiber bundle. Due to the change in the displacement speed of the separation roller and the top comb during the separation process, the separation process is different from the general Li extension process, and its drafting value is changed.
Calculated FA261 card at 17-24°Separation and draft values between E are shown in Table 3-120. The size and variation of the card is closely related to the morphology of the separated fiber bundles, the connection state of the cotton web and the uniformity of the surface strip. The average pulling factor ep for the entire bundle is the ratio of the total output degree (k) to the total input length (a) during the entire separation process.
A separate sketch e2 is the ratio of the effective output length s to the feed length a. (iii) The effective length of the output, because the joint length and the periodic characteristics of the card's snap-disconnect joint, are closely related to the quality of the countertop magnetic stripe card and the joint length fastness to the wool joint rate. ? Depending on the effective length of the splice of L and the output shown in S, the relationship between them is shown in Fig. 3-36 for separating short fiber lengths.
The effective control output data length of 50.56mmoAZOlD carding machine is 37.24mm.