I'd like to ask about the workflow of each workshop in the textile mill.

1. Main tasks: (1) cotton opening: loose compacted raw cotton into smaller cotton blocks or bundles to facilitate smooth mixing and impurity removal; (2) Cotton cleaning: most impurities, defects and short fibers unsuitable for spinning in raw cotton are removed. (3) Cotton blending: raw cotton with different components is fully and evenly mixed to stabilize the quality of cotton yarn. (4) Winding: making cotton rolls with certain weight, length, uniform thickness and good appearance. 2. Name of main machinery (1) Cotton mixing machinery:

For some reason, the automatic baler consists of 1-2 baler and cotton-catching trolley. It grabs multiple bags of mixed raw cotton on the platform, transports it to the front through airflow, and plays the role of opening cotton at the same time.

(2) Cotton box machinery: cotton box impurity remover (high-efficiency cotton box, A006B, etc.). ) continue to mix, loosen the cotton blocks, remove impurities such as cottonseed and seed cotton, and control the conveying capacity of raw cotton. (3) No.43 cotton box (A092) loosens small pieces of cotton, and the uniform cotton has a good loosening effect.

(4) Beater: ① Millipig cotton opener (A036), which performs more intense cotton opening and impurity removal to remove medium impurities such as broken seeds. (2) The vertical cotton opener has a severe function of opening and removing impurities, but it is easy to damage fibers and produce neps. At present, flower cleaning is generally not used in the process (generally it can be treated as raw material or seed crushing). ③A035 cotton-mixed opener has the performance of both cotton box machinery and beating machine machinery, and is equipped with air-flow impurity removal device, which has good cotton-mixed, opening and impurity removal effects. ④ Unidirectional cotton cleaner (A076, etc.). ) Continue to open and comb raw cotton, remove finer impurities, and make cotton rolls with uniform thickness, certain specifications and weight.

Carding process

1. Main tasks

(1) carding: cotton blocks are decomposed into single fiber state, which improves the straight and parallel state of fibers. (2) Impurity removal: fine impurities and short fibers in the cotton roll are removed. (3) mixing: further fully and evenly mixing the fibers. (4) Slimming: making the required strips. 2. Name and function of main machinery:

(1) taker-in: The function of the tooth tip is to hit and loosen the cotton layer, clamp and comb it, remove impurities and short fibers from the cotton roll, and straighten the fibers initially.

The tip of the tooth takes the fiber away and transfers it to the cylinder. (2) Cylinder and cover plate

(1) The fiber released by the taker-in roller can be freely divided into single fibers, which has the function of uniform mixing. (2) Remove residual fine impurities and short fibers. (3) Make the fiber layer with good quality and transfer it to doffer. (3) doffer:

(1) Stripping fibers from the cylinder to form a better cotton web. (2) The uniform cotton sliver is made of pressing roller and looping device.

Winding process

Main tasks:

1. Drawing: Generally, 2 1 fiber is used for drawing to improve the straightness and uniformity of the fiber in the small coil. 2. Coiling: Coiling into small coils with specified length and weight, with flat edges and distinct layers when uncoiling.

Combing process

Main tasks:

1. Impurity removal: remove neps, impurities and fiber defects in the fiber.

2. Carding: further separating fibers, excluding short fibers below a certain length, and improving the length uniformity and straightness of fibers. 3. Drafting: the sliver is thinned to a certain thickness to improve the parallel straightness of the fiber. 4. Slitting: making the sliver that meets the requirements.

Tempering process

primary mission

1. combination: generally 6-8 slivers are combined to improve the length unevenness of slivers.

2. Drafting: the sliver is elongated and refined to a specified weight, and the straightness and parallelism of the fiber are further improved.

3. Mixing: the fibers are further mixed evenly by combining and stretching. On the drawing frame, sliver with different marks and processes, as well as cotton and chemical fiber blending can be mixed.

4. Stripping: make mature strips with well-formed loops and put them in cotton barrels regularly for later processing.

Roving process

Main tasks:

1. Drafting: draw the cooked sliver evenly and make it thinner, so that the fibers are further straight and parallel.

2. Twist: properly twist the drawn sliver to make the sliver have a certain strength, which is beneficial to the winding and unwinding of roving on the spinning frame.

Spinning process

Main tasks:

1. Drafting: Refine the roving to the required fineness to make the fiber straight and parallel.

2. Twisting: Twisting the slivers back to form spun yarn with certain twist and strength. 3. Winding: The twisted spun yarn is wound on the bobbin.

4. Forming: making the bobbin yarn with a certain size and shape, which is convenient for handling and subsequent processing.

Winding process

Main tasks:

1. winding forming: winding the bobbin yarn (thread) into a package with large capacity, good forming and certain density. 2. Impurity removal: some defects and impurities on the yarn are removed to improve the yarn quality.

Twisting process

primary mission

1. Twisting: Two or more single yarns are combined and twisted to make high-strength and well-structured strands. 2. Winding: winding the stranded wire on the bobbin.

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3. Use: to make pipes with certain size and shape, which is convenient for handling and post-processing.

Shaking process

Shake the wrapped yarn (thread) into twisted yarn (thread) according to the specified length, which is convenient for packaging, transportation and processing.

Packaging process

Main tasks:

Make the hank yarn (thread) and cheese yarn (thread) into small bags, medium bags, large bags and cheese bags with a certain volume according to the specified weight, number of balls and number of packages, which is convenient for storage and transportation.

Warping process

Tasks and requirements

1. deformation task:

According to the regulations of process design, a certain number and length of warp yarns are drawn from the winding bobbin to form a yarn, so that the tension of the warp yarns is uniform and tightly wound on the warping beam in parallel, making preliminary preparations for forming the warp beam. 2. Warping requirements:

(1) When warping, the warp yarn must have proper tension, while keeping the elasticity and tension of the warp yarn as much as possible. (2) In the warping process, the warping tension should be as uniform as possible.

(3) The warp arrangement and winding density on the warp beam should be uniform (referring to the yarns in the transverse direction and the inner and outer layers of the warp beam), and the surface of the warp beam should be arranged neatly without unevenness.

(4) The number, length or color warp arrangement cycle of warping must meet the requirements of weaving process design. (5) Warping machine has higher production efficiency and less rewinding.

Sizing process

Tasks and requirements:

When the warp is woven on the loom, it will be repeatedly rubbed by healds, reeds and drop wires, as well as the tension of changing dimensions when shedding. Because there are many hairiness on the surface of the yarn, when the yarn is subjected to repeated friction and tension on the loom, the hairiness on the yarn will be loose and fuzzy, and some fibers will be separated from the yarn, which will eventually lead to the breakage of the warp yarn, which not only increases the breakage rate of the loom, reduces the standing position of workers, but also affects the quality of cotton cloth.

In order to reduce the breakage rate on the loom, the warp must be sized to make the warp have greater smoothness and fastness. The sizing process is to combine several warp beams into one beam, and then press, dry and wind it into one beam. After sizing, the fibers protruding around the warp are adhered to the yarn evenness by the slurry, which improves the smoothness of the yarn. At the same time, the slurry film is formed on the warp after the slurry is dried, which increases the wear resistance of the warp. On the other hand, the slurry permeates into the warp yarn to make some fibers adhere to each other. When the yarn is stretched, it prevents the fibers from moving in the yarn, thus improving the strength of the warp yarn.

From the cross-section of many sizing yarns, the depth of the slurry penetrating into the warp yarn is not large, and most of the slurry covers the yarn surface. If the size can't penetrate into the yarn at all, only a layer of size film can be formed on the surface of the yarn, which is very fragile and easy to fall off during weaving. If all the size penetrates into the yarn, a large number of fibers in the yarn will stick together. At this time, although the strength of the yarn increases a lot, the elongation of the yarn will decrease obviously. Because the elongation depends on the bending degree of fibers in cotton yarn and their mutual movement. After sizing, the size film covers the yarn because the size penetrates into the yarn.

When the warp is stretched, the adhesion of the surface and fluff hinders the free movement of fibers in the warp. Therefore, the elongation of warp yarns after sizing is reduced. Such sizing can't resist the changing load in the weaving process. Experience has proved that simply pursuing the increase of pulp swelling strength will lead to the increase of loom end breakage rate after reaching a certain limit. Therefore, it is the basic requirement of sizing to properly increase the strength of yarn, maintain the elasticity of warp yarn to the maximum extent and reduce the pilling phenomenon and friction coefficient of warp yarn.

Under normal circumstances, warp yarns should be sized, but strands with sufficient smoothness and strength can only go through the doubling process, and some can be used as mopping water.

Sizing project includes two processes: sizing process (sizing preparation) and sizing process. The leading edge liquid should be attached to the warp yarn to dry and then wound on the warp beam.

In order to achieve the purpose of sizing machinery, the basic requirements for sizing machinery are as follows: 1. Size and size requirements:

(1) The size should not only penetrate the surface of the bridgehead warp, but also partially penetrate into the yarn, and after drying, a size film can be formed on the yarn.

(2) The size should have a certain hygroscopicity, which will not cause the size to solidify into a hard film and reduce the elasticity and elongation of warp yarns.

(3) The cement slurry shall be anticorrosive.

(4) The slurry should not operate warp, heald and machine parts.

(5) The size should be easily removed from the fabric, and it will not affect the rinsing and printing and dyeing projects. (6) The performance of mud should be stable accordingly.

(7) The slurry should be prepared with raw materials with low value and sufficient supply, and staple food should not be used as much as possible. 2. Requirements of sizing machinery:

(1) should be able to maintain a certain sizing rate.

(2) It should be able to maintain a certain drying moisture regain and minimize steam consumption. (3) Keep the elasticity of warp yarns to the maximum. (4) High speed and high output.

(5) Less material loss, less recycling and less power consumption.

Warp-in process

Let-in, commonly known as reed or let-in, is the last process in warp preparation. The task of let-in is to pass the warp on the warp beam through the drop piece, heald and reed according to certain rules according to the requirements of the fabric, to form a shed during weaving, and to introduce the fabric needed for weft weaving, so that the warp can stop in time when it is broken without causing weaving defects.

Weaving process

Textile is an important process in textile mills. The task of weaving is to interweave the warp and weft processed in the preparation process into fabric with a loom according to the fabric specification requirements and certain process design. The output, quality and consumption of weaving process directly affect the economic benefits of enterprises and must be paid great attention to. 1. Improve product quality.

Fabric quality mainly includes the physical properties and appearance defects of cotton cloth. Physical properties such as warp and weft strength, wear fastness and air permeability of fabrics directly affect wearability and wear fastness, which should be determined according to different uses of fabrics. And it should be controlled in the whole process of lean production (www.chinatpm.net) to meet the index requirements. Fabric appearance defects, such as creases, loose edges, feet, jumps and holes, not only affect the fabric appearance, but also directly affect the wearability and fastness. Strictly implement the working method in the operation process, often analyze the factors causing defects in daily management, and put forward targeted improvement measures to continuously improve the quality of finished products and improve the first-class product rate.

2. Improve production efficiency

The production efficiency of loom is one of the assessment indexes to measure the production level. The loom stops due to warp and weft breakage, mechanical failure, rag handling, winding and other reasons, which affects the loom output and cotton quality. Therefore, effective measures must be taken to reduce broken ends, reduce mechanical failures, timely deal with downtime, shorten downtime, and strive to improve loom production efficiency.

3. The main material consumption of loom in weaving process is machine material, yarn and power. Consumption is related to raw material quality, equipment condition, technical operation level, production environment and production conditions. Reducing material consumption is an important content of improving economic benefits, which must be paid great attention to. (1) Reduce machine material consumption:

① Strictly control the quality of purchased machine materials to prevent inferior products from entering the factory.

(2) Strengthen equipment maintenance, ensure that the equipment is always in good condition, and reduce the wear and tear caused by poor equipment condition. ③ Strengthen technical operation to reduce man-made losses.

(2) reduce yarn consumption; ① Grasp the fabric width and weft density correctly on the machine, and avoid using multiple threads.

(2) Strengthen the technical operation, prevent weaving defects, take apart the cloth as little as possible, do not take apart the cloth, and reduce silk withdrawal. (3) Keep the equipment in good condition and avoid large weft.

(4) Strengthen production management and reduce oil pollution, broken cloth and weft insertion. (3) Reduce power consumption: ① Turn off the motor when it stops.

(2) Improve the efficiency and operation rate of the cloth distributor. (3) Control the correct use of lighting and air conditioning to prevent the waste of auxiliary electricity. ④ Use labor-saving pulley.