A method for preparing sample of colored spun fancy yarn, a sample making machine for cotton slivers and a twisting device.

Abstract

This invention discloses a highly efficient, low-consumption, and precise method for preparing micro-fiber structure controllable color-spun fancy yarn samples, comprising: S1, micro-raw material layering treatment: weighing raw materials A and B according to the target pattern of the color-spun fancy yarn sample; S2, fiber orientation control of raw materials A and B: layering raw materials A into a first cotton layer and raw materials B into a second cotton layer; performing 5-10 directional drafting cycles on the first and second cotton layers respectively, controlling the fiber orientation angle of the first and second cotton layers to ≤15°, and outputting a first cotton sliver and a second cotton sliver; S3, fancy pattern orientation construction: spinning the first and second cotton slivers into rovings corresponding to the target pattern of the color-spun fancy yarn sample according to the target pattern; S4, color-spun fancy yarn sample spinning: drafting the roving and spinning it into a color-spun fancy yarn sample corresponding to the target pattern. This invention can save raw materials, quickly produce samples, and improve sampling efficiency.

Description

Technical Field

[0001] This invention relates to the field of textile industry technology, and in particular to a method for preparing small samples of colored spun fancy yarn with controllable micro-fiber structure, a cotton sliver sample machine, and a handheld pneumatic twister. Background Technology

[0002] Color-dyed fancy yarn is a type of colored yarn produced by dyeing fibers before spinning. Color matching and sampling are crucial steps in the production of color-dyed fancy yarn. Manufacturers need to produce small samples of color-dyed fancy yarn that meet the customer's requirements for color, style, and quality, based on the colors specified by the customer.

[0003] Traditional colored fancy yarn requires more than 500g of raw material, which is spun into small samples using large-scale equipment for color matching and prototyping. This method has the following drawbacks: (1) Trace amounts of raw materials are difficult to mix evenly: For raw materials with a total amount of <5g, they are prone to tangling and layering during the spinning of colored fancy yarn samples; (2) The patterns of colored spun fancy yarn samples rely on human experience: the twist of hand twisting fluctuates greatly (CV≥15%), and the reproducibility of grid patterns, iridescent patterns and striped patterns is poor; (3) The color matching process is lengthy: the color matching process is long, inefficient, and involves many steps, resulting in a high rate of raw material waste (>30%). (4) Long process of color spun fancy yarn sampling: The entire process from preparing color spun fancy yarn samples to completing color matching sampling takes more than 72 hours.

[0004] In recent years, customers have had increasingly higher requirements for the color and style of colored spun fancy yarns, making color matching and sampling more difficult. This has resulted in longer color matching times, lower efficiency, and more color matching attempts for manufacturers, which seriously affects delivery time. In addition, the number of color matching attempts leads to more sampling attempts (more preparation of small samples of colored spun fancy yarns), resulting in significant waste of raw materials and even affecting the quality of colored spun fancy yarns. Summary of the Invention

[0005] This invention provides a highly efficient, low-consumption, and precise method for preparing small samples of color-spun fancy yarn with controllable micro-fiber structure, a cotton sliver sample machine, and a handheld pneumatic twister, to solve the technical problems of long color matching time, low color matching efficiency, and many color matching times in the existing color matching and sampling process for color-spun fancy yarn.

[0006] The technical solution provided by this invention is as follows: One objective of this invention is to provide a highly efficient, low-consumption, and precise method for preparing small samples of color-spun fancy yarns with controllable microfiber structure, the preparation method comprising: S1. Layered processing of trace raw materials: Weigh out raw materials of group A and group B according to the target pattern of the colored spun fancy yarn sample; The target pattern of the colored spun fancy yarn sample is a checkered pattern, an iridescent pattern, or a striped pattern; Among them, Group A uses combed colored cotton, or a mixture of combed colored cotton and chemical fiber, or mixed colored cellulose fiber as raw material. Group B uses combed white cotton, or a blend of combed white cotton and chemical fibers, or mixed-color cellulose fibers as raw materials. S2. Control the fiber orientation of raw materials A and B: lay raw materials A in layers to form the first cotton layer and raw materials B in layers to form the second cotton layer. The first cotton layer and the second cotton layer are subjected to 5 to 10 directional stretchings respectively, and the fiber orientation angle of the first cotton layer and the second cotton layer is controlled to be ≤15°, and the first cotton sliver and the second cotton sliver are output. S3. Fancy directional construction: According to the target pattern of the colored spun fancy yarn sample, the first cotton sliver and the second cotton sliver are spun into rovings of the colored spun fancy yarn sample corresponding to the target pattern. The roving spinning process involves twisting the first cotton sliver and the second cotton sliver separately, twisting the second cotton sliver to spin the third roving and then combining it with the first cotton sliver for drafting and twisting, and twisting the first cotton sliver and the second cotton sliver side by side for drafting and twisting. The twisting is done using a handheld pneumatic twister, which includes a miniature air pump, a twist controller, a silicone twist groove, a twisting nozzle, and a parameter encoder. S4. Spinning of color-spun fancy yarn samples: The roving of the color-spun fancy yarn sample corresponding to the target pattern is drafted and spun into a color-spun fancy yarn sample corresponding to the target pattern.

[0007] In a preferred embodiment, in step S1, the types of raw materials A and B are determined according to the target pattern of the spun fancy yarn sample: When the target pattern of the colored spun fancy yarn sample is a grid pattern, the raw material for group A is combed colored cotton and the raw material for group B is combed white cotton. When the target pattern of the colored spun fancy yarn sample is the iridescent pattern, the raw materials of group A are a mixture of combed colored cotton and chemical fiber, and the raw materials of group B are a mixture of combed white cotton and chemical fiber. When the target pattern of the yarn-dyed fancy yarn sample is a striped pattern, the raw materials for group A are mixed-color cellulose fibers and the raw materials for group B are mixed-color cellulose fibers.

[0008] In a preferred embodiment, in step S2, a cotton swab sampler is used to control the fiber orientation of raw materials A and B. The tampon sample making machine includes at least an input roller and an output roller. The distance between the input roller and the output roller is determined according to the types of raw materials A and B. When group A uses combed colored cotton and group B uses combed white cotton, the distance between the input roller and the output roller is 32-35mm. When Group A uses a mixture of combed colored cotton and chemical fiber, and Group B uses a mixture of combed white cotton and chemical fiber, the distance between the input roller and the output roller is 33-42mm. When both Group A and Group B use mixed-color cellulose fibers, the distance between the input roller and the output roller is 40-45 mm.

[0009] In a preferred embodiment, in step S3, when the target pattern of the yarn-dyed fancy yarn sample is a grid pattern, the roving of the yarn-dyed fancy yarn sample corresponding to the grid pattern is spun as follows: The first cotton sliver is stretched and twisted to spin the first roving of the color-spun fancy yarn sample corresponding to the grid pattern. The second cotton sliver is stretched and twisted to spin the second roving of the color-spun fancy yarn sample corresponding to the grid pattern. In step S4, when the target pattern of the colored spun fancy yarn sample is a grid pattern, the first roving and the second roving are combined and stretched to spin into a colored spun fancy yarn sample with the corresponding grid pattern.

[0010] In a preferred embodiment, in step S3, when the target pattern of the colored spun fancy yarn sample is an iridescent pattern, the roving of the colored spun fancy yarn sample corresponding to the iridescent pattern is spun according to the following method: The second cotton sliver is stretched and twisted to spin the third roving into the color-spun fancy yarn sample corresponding to the color-spun fancy yarn sample; The first cotton sliver and the third roving are combined, stretched, and twisted to spin the fourth roving of the color-spun fancy yarn sample corresponding to the color-spun fancy yarn sample. In step S4, when the target pattern of the colored spun fancy yarn sample is an iridescent pattern, the four rovings are drafted and spun into a colored spun fancy yarn sample corresponding to the iridescent pattern.

[0011] In a preferred embodiment, in step S3, when the target pattern of the color-spun fancy yarn sample is a striped pattern, the roving of the color-spun fancy yarn sample corresponding to the striped pattern is spun as follows: After stretching the first and second cotton slivers side by side in parallel, a third cotton sliver is obtained; The third cotton sliver is twisted and spun into the fifth roving of the color-spun fancy yarn sample with the corresponding striped pattern; In step S4, when the target pattern of the colored spun fancy yarn sample is a striped pattern, the five-coarse yarn is drafted and spun into a colored spun fancy yarn sample with the corresponding striped pattern.

[0012] Another object of the present invention is to provide a tampon sample making machine, the tampon sample making machine comprising: An input roller and an input skin roller, the input roller and the input skin roller forming an input end; An output roller and an output skin roller, wherein the output roller and the output skin roller form an output end; The distance between the input terminal and the output terminal is adjustable; A detachable pile roller is disposed at the output end formed by the output roller and the output skin roller. A spacing scale is used to measure the distance between the input terminal and the output terminal.

[0013] In a preferred embodiment, the tampon sample machine further includes: a first pressure spring and a second pressure spring; The first pressure spring is used to apply input roller pressure to the input roller; The second pressure spring is used to apply output roller pressure to the output roller.

[0014] Another object of the present invention is to provide a handheld pneumatic twister, the handheld pneumatic twister comprising a miniature air pump, a silicone twist groove and a twisting nozzle; The twisting nozzle is connected to the silicone twisting groove; the micro air pump is connected to the silicone twisting groove and is used to apply twisting air pressure to the silicone twisting groove to drive the silicone twisting groove to rotate.

[0015] In a preferred embodiment, the handheld pneumatic twister further includes a twist controller; The twist controller is used to control the twist of the silicone twist groove.

[0016] The above-described technical solution of the present invention has at least the following beneficial effects compared with the prior art: This invention provides a highly efficient, low-consumption, and precise method for preparing colored spun fancy yarn samples with controllable micro-fiber structure, a cotton sliver sample making machine, and a handheld pneumatic twister. In the colored spun fancy yarn sampling process, it is possible to prepare colored spun fancy yarn samples using only 0.5-1g of micro-raw materials, reducing the technical difficulties of uneven color mixing and uncontrollable target patterns during the preparation of colored spun fancy yarn samples using micro-raw materials (0.5-1g).

[0017] This invention provides a highly efficient, low-consumption, and precise method for preparing small samples of color-spun fancy yarns with controllable microfiber structure, a sliver sample making machine, and a handheld pneumatic twister. The roving spinning process involves twisting the first and second slivers separately, twisting the second sliver to spin a third roving and then combining it with the first sliver for drafting and twisting, and then drafting the first and second slivers side by side and twisting them. This method breaks through the traditional single-blended spinning method for constructing fancy yarns, and achieves highly efficient, low-consumption, and precise preparation of small samples of color-spun fancy yarns with high-end fancy yarns such as grid patterns, iridescent patterns, and striped patterns.

[0018] This invention provides a highly efficient, low-consumption, and precise preparation method for color-spun fancy yarn samples with controllable micro-fiber structure, a sliver sample making machine, and a handheld pneumatic twister. It can achieve efficient, low-consumption, and precise preparation of color-spun fancy yarn samples of high-end patterns such as checkered patterns, iridescent patterns, and striped patterns. It effectively reduces the color matching time in the color-spun fancy yarn sampling process, improves color matching efficiency, reduces the number of color matching operations, saves raw material consumption, enables rapid sampling, improves sampling efficiency, and reduces production costs. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a physical effect diagram of the sample preparation process of colored spun fancy yarn in Embodiment 1 of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the tampon sample machine of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the handheld pneumatic twister of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the yarn pattern card of the present invention.

[0023] Figure 5 This is a physical effect diagram of the sample preparation process of colored spun fancy yarn in Embodiment 2 of the present invention.

[0024] Figure 6 This is a physical effect diagram of the sample preparation process of colored spun fancy yarn in Embodiment 3 of the present invention.

[0025] Figure 7 These are actual images of the colored spun fancy yarn samples prepared according to Embodiments 1, 2, and 3 of the present invention, wound onto a yarn pattern card. Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or “connected,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0027] It should be noted that the terms "up", "down", "left", "right", "front", and "back" used in this invention are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. Example 1.

[0028] According to embodiments of the present invention, a method for preparing small samples of color-spun fancy yarns with controllable microfiber structure is provided, comprising: Step S1, Micro-material Layering: According to the target pattern of the colored spun fancy yarn sample, weigh the raw materials of group A and group B. The weight of raw material group A is 0.25-0.5g, the weight of raw material group B is 0.25-0.5g, and the total weight of raw materials group A and group B is 0.5-1g.

[0029] Among them, the target patterns for the colored spun fancy yarn samples are checkered patterns, iridescent patterns, or striped patterns.

[0030] Group A uses combed colored cotton, or a mixture of combed colored cotton and chemical fibers, or mixed colored cellulose fibers as raw materials.

[0031] Group B uses combed white cotton, or a mixture of combed white cotton and chemical fibers, or mixed-color cellulose fibers as raw materials.

[0032] Specifically, the types of raw materials in group A and group B are determined based on the target pattern of the colored spun fancy yarn sample: When the target pattern of the colored spun fancy yarn sample is a checkered pattern, the raw material for group A is combed colored cotton and the raw material for group B is combed white cotton.

[0033] When the target pattern of the colored spun fancy yarn sample is the iridescent pattern, the raw materials for Group A are a blend of combed colored cotton and chemical fibers, and the raw materials for Group B are a blend of combed white cotton and chemical fibers.

[0034] When the target pattern of the colored spun fancy yarn sample is a striped pattern, then the raw materials for group A are mixed-color cellulose fibers and the raw materials for group B are mixed-color cellulose fibers.

[0035] In this embodiment, the target pattern of the colored spun fancy yarn sample is a grid pattern. The raw materials of group A are combed colored cotton (100% cotton): 0.4g of Baolan cotton fine mesh and 0.1g of extra black cotton fine mesh.

[0036] Group B uses combed white cotton (100% cotton): 0.2g of white cotton web and 0.3g of extra black cotton web.

[0037] Step S2: Control the fiber orientation of raw materials A and B: Lay raw materials A in layers to form the first cotton layer and raw materials B in layers to form the second cotton layer.

[0038] like Figure 1 As shown, in this embodiment, the raw materials of group A are laid in layers to form the first cotton layer AM, and the raw materials of group B are laid in layers to form the second cotton layer BM.

[0039] Furthermore, for Group A raw materials, hold one end with your left hand, stretch them with your right hand, and lay them flat on the workbench, layering them into a first cotton layer AM of 20cm × 5cm. For Group B raw materials, hold one end with your left hand, stretch them with your right hand, and lay them flat on the workbench, layering them into a second cotton layer BM of 20cm × 5cm.

[0040] The first cotton layer AM and the second cotton layer BM are subjected to 5 to 10 directional stretching cycles respectively, and the fiber orientation angle of the first cotton layer AM and the second cotton layer BM is controlled to be ≤15°, and the first cotton sliver AL and the second cotton sliver BL are output.

[0041] like Figure 2 As shown, this invention provides a cotton sliver sample preparation machine 100 for a highly efficient, low-consumption, and precise method for preparing small samples of color-spun fancy yarns with controllable micro-fiber structure. The cotton sliver sample preparation machine 100 includes: The input roller 101 and the input roller 102 form the input end; the output roller 103 and the output roller 104 form the output end; the distance between the input end and the output end is adjustable.

[0042] The collecting roller 106 is detachably arranged at the output end formed by the output roller 103 and the output leather roller 104.

[0043] The 105-inch spacing scale is used to measure the distance between the input and output terminals.

[0044] The first pressure spring 107 is used to apply input roller pressure to the input roller 101; the second pressure spring 108 is used to apply output roller pressure to the output roller 103.

[0045] The first pressure spring 107 of this invention applies an input roller pressure of 10-15N to the input roller 101; the second pressure spring 108 applies an output roller pressure of 15-20N to the output roller 103.

[0046] In step S2, the present invention uses a cotton sliver sample machine 100 to control the fiber orientation of raw materials A and B.

[0047] The distance between the input roller 101 and the output roller 103 of the tampon sample making machine 100 is determined according to the types of raw materials A and B: When group A uses combed colored cotton and group B uses combed white cotton, the distance between input roller 101 and output roller 103 is 32-35mm.

[0048] When the raw material for group A is a mixture of combed colored cotton and chemical fiber, and the raw material for group B is a mixture of combed white cotton and chemical fiber, the distance between the input roller 101 and the output roller 103 is 33-42mm.

[0049] When both Group A and Group B use mixed-color cellulose fibers, the distance between the input roller 101 and the output roller 103 is 40-45 mm.

[0050] In this embodiment, the target pattern of the colored spun fancy yarn sample is a grid pattern. The raw materials of group A are combed colored cotton and the raw materials of group B are combed white cotton. By adjusting the distance between the input end and the output end, the distance between the input roller 101 and the output roller 103 is 33mm.

[0051] Specifically, the distance between the input end and the output end is measured by the spacing scale 105, and the distance between the input end and the output end is adjusted so that the distance between the input roller 101 and the output roller 103 is 33mm.

[0052] like Figure 1 As shown, in this embodiment, the first cotton layer AM and the second cotton layer BM are subjected to 5 to 10 directional stretchings respectively, and the fiber orientation angle of the first cotton layer AM and the second cotton layer BM is controlled to be 12°, and the first cotton sliver AL and the second cotton sliver BL are output.

[0053] Specifically, the first cotton layer AM is input into the input roller 101 of the sliver sample machine 100 (the gap between the input roller 101 and the input slip roller 102), and output through the output roller 103 of the sliver sample machine 100 (the gap between the output roller 103 and the output slip roller 104). The first cotton layer AM is oriented and stretched, and then mixed at the collecting roller 106. The stretched first cotton layer AM is removed from the collecting roller 106, and this process is repeated 5 to 10 times to ensure that the fiber orientation angle of the A group raw materials of the first cotton layer AM is 12° after thorough mixing. The first sliver AL is then output.

[0054] The second cotton layer BM is fed into the input roller 101 of the sliver sampler 100 and output through the output roller 103 of the sliver sampler 100. The second cotton layer BM is oriented and stretched, and mixed at the collecting roller 106. The stretched second cotton layer BM is removed from the collecting roller 106 and repeated 5 to 10 times to ensure that the fiber orientation angle of the B group raw materials of the second cotton layer BM is 12° after thorough mixing. The second sliver BL is then output.

[0055] During the directional stretching process of the first cotton layer AM and the second cotton layer BM by the above-mentioned cotton sliver sample machine 100, the linear speed ratio of the input roller 101 and the output roller 103 is 1:4.

[0056] Step S3, Fancy Oriented Construction: According to the target pattern of the colored spun fancy yarn sample, the first cotton sliver AL and the second cotton sliver BL are spun into rovings of the colored spun fancy yarn sample corresponding to the target pattern.

[0057] like Figure 1 As shown, in this embodiment, the target pattern of the color-spun fancy yarn sample is a grid pattern. The roving for the color-spun fancy yarn sample corresponding to the grid pattern is spun as follows: The first cotton sliver AL is stretched and twisted to spin the first roving AC of the color-spun fancy yarn sample corresponding to the grid pattern.

[0058] The second cotton sliver BL is stretched and twisted to spin the second roving BC into a color-spun fancy yarn sample with a corresponding grid pattern.

[0059] like Figure 3 As shown, the present invention provides a handheld pneumatic twister 200 for a highly efficient, low-consumption, and precise preparation method of small samples of colored spun fancy yarn with controllable micro-fiber structure. The handheld pneumatic twister 200 includes a micro air pump 201, a twist controller 202, a silicone twist groove 203, a twisting nozzle 204, and a parameter encoder 205.

[0060] The twisting nozzle 204 is connected to the silicone twisting groove 203. The miniature air pump 201 is connected to the silicone twisting groove 203 and is used to apply twisting air pressure to the silicone twisting groove 203 to drive the silicone twisting groove 203 to rotate.

[0061] Twist controller 202 is used to control the twist of silicone twist groove 203. Parameter encoder 205 is used to display the twisting air pressure applied by micro air pump 201 to silicone twist groove 203, and to lock the twist of silicone twist groove 203.

[0062] The micro air pump 201 of the handheld pneumatic twister 200 of the present invention applies a twisting air pressure range of 0.2 to 0.5 MPa to the silicone twist groove 203, the twist range of the silicone twist groove 203 is 3 to 5 twists / cm, the error accuracy of the silicone twist groove 203 is ±0.1 twists / cm, and the fitting diameter of the twisting nozzle 204 is 0.5 to 1.2 cm.

[0063] This invention uses a cotton sliver sample machine 100 and a handheld pneumatic twister 200 to spin rovings of colored spun fancy yarn samples corresponding to the target pattern.

[0064] Combination Figures 1 to 3 In this embodiment, a cotton sliver sample machine 100 and a handheld pneumatic twister 200 are used to spin the roving of the color-spun fancy yarn sample corresponding to the grid pattern.

[0065] Disassemble the collecting roller 106 of the cotton swab sample machine 100, and place the handheld pneumatic twister 200 at the output roller 104 of the cotton swab sample machine 100, with the twisting nozzle 204 of the handheld pneumatic twister 200 facing the output roller 104 of the cotton swab sample machine 100.

[0066] Adjust the micro air pump 201 to apply a twisting air pressure of 0.3 MPa to the silicone twist groove 203, and lock the twist of the silicone twist groove 203 to 4 twists / cm through the parameter encoder 205.

[0067] After the first cotton sliver AL is drafted through the input roller 101 and output roller 103 of the cotton sliver sample machine 100, it is fed into the silicone twisting groove 203 by the twisting nozzle 204 of the hand-held pneumatic twister 200 at the output roller 104 of the cotton sliver sample machine 100. The silicone twisting groove 203 twists the first cotton sliver AL and spins it into the first roving AC of the color-spun fancy yarn sample with the corresponding grid pattern.

[0068] After the second sliver BL is drafted through the input roller 101 and output roller 103 of the sliver sample machine 100, it is fed into the silicone twisting groove 203 by the twisting nozzle 204 of the hand-held pneumatic twister 200 at the output roller 104 of the sliver sample machine 100. The silicone twisting groove 203 twists the second sliver BL and spins it into the second roving BC of the color-spun fancy yarn sample with the corresponding grid pattern.

[0069] The first roving AC and the second roving BC produced are 30-60 cm in length, uniform in thickness, and have a certain degree of twist.

[0070] Step S4, Spinning of color-spun fancy yarn samples: Draft the roving of the color-spun fancy yarn sample corresponding to the target pattern and spin it into a color-spun fancy yarn sample corresponding to the target pattern.

[0071] like Figure 1 As shown, in this embodiment, the target pattern of the colored spun fancy yarn sample is a grid pattern. The first roving AC and the second roving BC are combined and stretched to spin the colored spun fancy yarn sample D (fine yarn) with the corresponding grid pattern.

[0072] Specifically, a fine yarn sample machine is used to combine drafting of the first roving AC and the second roving BC at a speed ratio of 1:4 to 1:6 to produce a color-spun fancy yarn sample D (fine yarn) with a corresponding grid pattern.

[0073] The yarn count of the colored spun fancy yarn sample corresponding to the target pattern spun according to the present invention is 10 to 60S (count). In this embodiment, the yarn count of the colored spun fancy yarn sample D (yarn) corresponding to the grid pattern spun according to the present invention is 30S (count), and the length of the colored spun fancy yarn sample D (yarn) corresponding to the grid pattern spun according to the present invention is 10 to 50M.

[0074] The present invention does not specifically limit the fine yarn sample machine. Those skilled in the art can use existing fine yarn sample machines to spin roving into color-spun fancy yarn sample D (fine yarn) with corresponding grid pattern.

[0075] This invention involves winding a small sample of the spun colored fancy yarn corresponding to the target pattern onto a yarn pattern card 300 for color matching and sampling. The yarn pattern card 300 is as follows... Figure 4 As shown, the yarn pattern card 300 has multiple yarn threading holes 301.

[0076] Specifically, a small sample of the colored spun pattern yarn corresponding to the target pattern is passed through a yarn hole 301 of the yarn pattern card 300 and wound onto the yarn pattern card 300.

[0077] Color matching and sampling of the spun yarn sample corresponding to the target pattern: Manual color matching: Under D65 light source, more than 3 technicians compare the spun yarn sample D of the grid pattern with the color card provided by the customer. It is required that all 3 technicians judge it to be qualified (i.e., color difference acceptance rate = 100%).

[0078] Instrument color matching: Use a spectrophotometer to scan the color-spun fancy yarn sample corresponding to the target pattern, obtain the CIELab value, and calculate the color difference value ΔE. The color difference value ΔE is required to be ≤1.0.

[0079] When both the manual and instrument color matching results are satisfactory, the spun colored fancy yarn sample corresponding to the target pattern is deemed satisfactory, and the results of both manual and instrument color matching are stored.

[0080] like Figure 7 As shown, in this embodiment, the spun grid-patterned colored spun yarn sample D is passed through a yarn hole 301 of the yarn sample card 300 and wound onto the yarn sample card 300.

[0081] Color matching and prototyping are performed on sample D of the spun patterned yarn: Manual color matching: Under D65 light source, 3 technicians compare the small sample D of the checkered pattern spun yarn with the color card provided by the customer. All 3 technicians judged it to be qualified (color difference acceptance rate = 100%).

[0082] Color matching: A spectrophotometer was used to scan the lattice pattern of the colored spun yarn sample to obtain the CIE Lab value and calculate the color difference value ΔE. The obtained color difference value ΔE = 0.7.

[0083] Store the judgment result obtained by manual color matching (color difference acceptance rate = 100%) and the result obtained by instrument color matching (color difference value ΔE = 0.7).

[0084] Example 2.

[0085] The difference between this embodiment and Embodiment 1 is that the target pattern of the colored spun fancy yarn sample is the iridescent pattern.

[0086] According to embodiments of the present invention, a method for preparing small samples of color-spun fancy yarns with controllable microfiber structure is provided, comprising: Step S1, Layered processing of trace raw materials: Weigh out raw materials from group A and group B according to the target pattern of the colored spun fancy yarn sample.

[0087] In this embodiment, the target pattern of the colored spun fancy yarn sample is the iridescent pattern. The raw materials of group A are a mixture of combed colored cotton and chemical fiber (60% cotton, 40% polyester fiber): 0.3g of turquoise cotton fine web and 0.2g of black polyester fiber.

[0088] Group B uses a blend of combed white cotton and chemical fibers (60% cotton, 40% polyester fiber): 0.3g of white cotton web and 0.2g of white polyester fiber.

[0089] Step S2: Control the fiber orientation of raw materials A and B: Lay raw materials A in layers to form the first cotton layer and raw materials B in layers to form the second cotton layer.

[0090] like Figure 5 As shown, in this embodiment, the raw materials of group A are laid in layers to form the first cotton layer AM, and the raw materials of group B are laid in layers to form the second cotton layer BM.

[0091] Furthermore, for Group A raw materials, hold one end with your left hand, stretch them with your right hand, and lay them flat on the workbench, layering them into a first cotton layer AM of 20cm × 5cm. For Group B raw materials, hold one end with your left hand, stretch them with your right hand, and lay them flat on the workbench, layering them into a second cotton layer BM of 20cm × 5cm.

[0092] The first cotton layer AM and the second cotton layer BM are subjected to 5 to 10 directional stretching cycles respectively, and the fiber orientation angle of the first cotton layer AM and the second cotton layer BM is controlled to be ≤15°, and the first cotton sliver AL and the second cotton sliver BL are output.

[0093] In step S2, the present invention uses a cotton sliver sample machine 100 to control the fiber orientation of raw materials A and B.

[0094] In this embodiment, the target pattern of the colored spun fancy yarn sample is the iridescent pattern. The raw materials of group A are a mixture of combed colored cotton and chemical fiber, and the raw materials of group B are a mixture of combed white cotton and chemical fiber. By adjusting the distance between the input end and the output end, the distance between the input roller 101 and the output roller 103 is 40mm.

[0095] like Figure 5 As shown, in this embodiment, the first cotton layer AM and the second cotton layer BM are subjected to 5 to 10 directional stretchings respectively, and the fiber orientation angle of the first cotton layer AM and the second cotton layer BM is controlled to be 10°, and the first cotton sliver AL and the second cotton sliver BL are output.

[0096] Specifically, the first cotton layer AM is input into the input roller 101 of the sliver sample machine 100 (the gap between the input roller 101 and the input slip roller 102), and output through the output roller 103 of the sliver sample machine 100 (the gap between the output roller 103 and the output slip roller 104). The first cotton layer AM is oriented and stretched, and then mixed at the collecting roller 106. The stretched first cotton layer AM is removed from the collecting roller 106, and this process is repeated 5 to 10 times to ensure that the fiber orientation angle of the A group raw materials of the first cotton layer AM is 10° after thorough mixing. The first sliver AL is then output.

[0097] The second cotton layer BM is fed into the input roller 101 of the sliver sampler 100 and output through the output roller 103 of the sliver sampler 100. The second cotton layer BM is oriented and stretched, and mixed at the collecting roller 106. The stretched second cotton layer BM is removed from the collecting roller 106 and repeated 5 to 10 times to ensure that the fiber orientation angle of the B group raw materials of the second cotton layer BM is 10° after thorough mixing. The second sliver BL is then output.

[0098] During the directional stretching of the first cotton layer AM and the second cotton layer BM by the above-mentioned cotton sliver sample machine 100, the linear speed ratio of the input roller 101 and the output roller 103 is 1:5.

[0099] Step S3, Fancy Oriented Construction: According to the target pattern of the colored spun fancy yarn sample, the first cotton sliver AL and the second cotton sliver BL are spun into rovings of the colored spun fancy yarn sample corresponding to the target pattern.

[0100] like Figure 5 As shown, in this embodiment, the target pattern of the color-spun fancy yarn sample is an iridescent pattern, and the roving of the color-spun fancy yarn sample corresponding to the iridescent pattern is spun according to the following method: The second cotton sliver BL is stretched and twisted to spin the third roving BE into a small sample of colored fancy yarn corresponding to the iridescent pattern.

[0101] The first cotton sliver AL and the third roving BE are combined, drafted, twisted, and spun into the fourth roving F, which is a sample of the colored spun fancy yarn corresponding to the color-changing pattern.

[0102] This invention uses a cotton sliver sample machine 100 and a handheld pneumatic twister 200 to spin rovings of colored spun fancy yarn samples corresponding to the target pattern.

[0103] Combination Figure 2 , Figure 3 and Figure 5 In this embodiment, a cotton sliver sample machine 100 and a handheld pneumatic twister 200 are used to spin the roving of the colored spun pattern yarn sample corresponding to the color-changing pattern.

[0104] Disassemble the collecting roller 106 of the cotton swab sample machine 100, and place the handheld pneumatic twister 200 at the output roller 104 of the cotton swab sample machine 100, with the twisting nozzle 204 of the handheld pneumatic twister 200 facing the output roller 104 of the cotton swab sample machine 100.

[0105] Adjust the micro air pump 201 to apply a twisting air pressure of 0.3 MPa to the silicone twist groove 203, and lock the twist of the silicone twist groove 203 to 3 twists / cm through the parameter encoder 205.

[0106] After the second sliver BL is drafted through the input roller 101 and output roller 103 of the sliver sample machine 100, it is fed into the silicone twisting groove 203 by the twisting nozzle 204 of the hand-held pneumatic twister 200 at the output roller 104 of the sliver sample machine 100. The silicone twisting groove 203 twists the second sliver BL and spins it into the third roving BE of the color-spun fancy yarn sample corresponding to the color-spun fancy yarn sample.

[0107] Adjust the micro air pump 201 to apply a twisting air pressure of 0.4 MPa to the silicone twist groove 203, and lock the twist of the silicone twist groove 203 to 4 twists / cm through the parameter encoder 205.

[0108] The first sliver AL and the third roving BE are simultaneously drafted by the input roller 101 and output roller 103 of the sliver sample machine 100, and then fed into the silicone twisting groove 203 by the twisting nozzle 204 of the handheld pneumatic twister 200. The silicone twisting groove 203 twists the first sliver AL and the third roving BE to spin the fourth roving F of the color-spun fancy yarn sample corresponding to the color-spun fancy yarn sample.

[0109] The fourth roving F produced has a length of 30-60 cm, is uniform in thickness, and has a certain degree of twist.

[0110] Step S4, Spinning of color-spun fancy yarn samples: Draft the roving of the color-spun fancy yarn sample corresponding to the target pattern and spin it into a color-spun fancy yarn sample corresponding to the target pattern.

[0111] like Figure 5 As shown, in this embodiment, the target pattern of the colored spun fancy yarn sample is an iridescent pattern. Therefore, the fourth roving F is drafted and spun into a colored spun fancy yarn sample G (fine yarn) corresponding to the iridescent pattern. Specifically, a fine yarn sample machine is used to draft the fourth roving F at a speed ratio of 1:4 to 1:6 to spun into a colored spun fancy yarn sample G (fine yarn) corresponding to the iridescent pattern.

[0112] The yarn count of the colored spun fancy yarn sample corresponding to the target pattern spun according to the present invention is 10 to 60S (count). In this embodiment, the yarn count of the colored spun fancy yarn sample G (fine yarn) corresponding to the iridescent pattern is 20S (count), and the length of the colored spun fancy yarn sample G (fine yarn) corresponding to the iridescent pattern is 10 to 50M.

[0113] The present invention does not specifically limit the fine yarn sample machine. Those skilled in the art can use existing fine yarn sample machines to spin roving into color-spun fancy yarn sample G (fine yarn) with corresponding color patterns.

[0114] like Figure 7 As shown, in this embodiment, the spun colored fancy yarn sample G is passed through a yarn hole 301 of the yarn sample card 300 and wound onto the yarn sample card 300.

[0115] Color matching and prototyping are performed on the sample G of the spun colored fancy yarn with the iridescent pattern: Manual color matching: Under D65 light source, 3 technicians compare the color-spun fancy yarn sample G of the Yicai pattern with the color card provided by the customer. All 3 technicians judged it to be qualified (color difference acceptance rate = 100%).

[0116] Color matching: A spectrophotometer was used to scan the color-spun yarn sample G of the iridescent pattern to obtain the CIE Lab value and calculate the color difference value ΔE. The obtained color difference value ΔE = 0.9.

[0117] Store the judgment results obtained by manual color matching (color difference acceptance rate = 100%) and the results obtained by instrument color matching (color difference value ΔE = 0.9).

[0118] Example 3.

[0119] The difference between this embodiment and Embodiments 1 and 2 is that the target pattern of the colored spun fancy yarn sample is a striped pattern.

[0120] According to embodiments of the present invention, a method for preparing small samples of color-spun fancy yarns with controllable microfiber structure is provided, comprising: Step S1, Layered processing of trace raw materials: Weigh out raw materials from group A and group B according to the target pattern of the colored spun fancy yarn sample.

[0121] In this embodiment, the target pattern of the colored spun fancy yarn sample is a striped pattern. The raw materials of group A are mixed-color cellulose fibers (100% cellulose fibers): 0.4g of pink regenerated cellulose fiber and 0.1g of blue regenerated cellulose fiber.

[0122] Group B uses mixed-color cellulose fibers (100% cellulose fiber): 0.4g of lake green regenerated cellulose fiber and 0.1g of sky blue regenerated cellulose fiber.

[0123] Step S2: Control the fiber orientation of raw materials A and B: Lay raw materials A in layers to form the first cotton layer and raw materials B in layers to form the second cotton layer.

[0124] like Figure 6 As shown, in this embodiment, the raw materials of group A are laid in layers to form the first cotton layer AM, and the raw materials of group B are laid in layers to form the second cotton layer BM.

[0125] Furthermore, for Group A raw materials, hold one end with your left hand, stretch them with your right hand, and lay them flat on the workbench, layering them into a first cotton layer AM of 20cm × 5cm. For Group B raw materials, hold one end with your left hand, stretch them with your right hand, and lay them flat on the workbench, layering them into a second cotton layer BM of 20cm × 5cm.

[0126] The first cotton layer AM and the second cotton layer BM are subjected to 5 to 10 directional stretching cycles respectively, and the fiber orientation angle of the first cotton layer AM and the second cotton layer BM is controlled to be ≤15°, and the first cotton sliver AL and the second cotton sliver BL are output.

[0127] In step S2, the present invention uses a cotton sliver sample machine 100 to control the fiber orientation of raw materials A and B.

[0128] In this embodiment, the target pattern of the colored spun fancy yarn sample is a striped pattern. The raw materials of group A are mixed-color cellulose fibers and the raw materials of group B are mixed-color cellulose fibers. By adjusting the distance between the input end and the output end, the distance between the input roller 101 and the output roller 103 is 42mm.

[0129] like Figure 6 As shown, in this embodiment, the first cotton layer AM and the second cotton layer BM are subjected to 5 to 10 directional stretchings respectively, and the fiber orientation angle of the first cotton layer AM and the second cotton layer BM is controlled to be 15°, and the first cotton sliver AL and the second cotton sliver BL are output.

[0130] Specifically, the first cotton layer AM is input into the input roller 101 of the sliver sample machine 100 (the gap between the input roller 101 and the input slip roller 102), and output through the output roller 103 of the sliver sample machine 100 (the gap between the output roller 103 and the output slip roller 104). The first cotton layer AM is oriented and stretched, and then mixed at the collecting roller 106. The stretched first cotton layer AM is removed from the collecting roller 106, and this process is repeated 5 to 10 times to ensure that the fiber orientation angle of the A group raw materials of the first cotton layer AM is 15° after thorough mixing. The first sliver AL is then output.

[0131] The second cotton layer BM is fed into the input roller 101 of the sliver sampler 100 and output through the output roller 103 of the sliver sampler 100. The second cotton layer BM is oriented and drawn, and mixed at the collecting roller 106. The drawn second cotton layer BM is removed from the collecting roller 106 and repeated 5 to 10 times to ensure that the fiber orientation angle of the B group raw materials of the second cotton layer BM is 15° after thorough mixing. The second sliver BL is then output.

[0132] During the directional stretching of the first cotton layer AM and the second cotton layer BM by the above-mentioned cotton sliver sample machine 100, the linear speed ratio of the input roller 101 and the output roller 103 is 1:5.

[0133] Step S3, Fancy Oriented Construction: According to the target pattern of the colored spun fancy yarn sample, the first cotton sliver AL and the second cotton sliver BL are spun into rovings of the colored spun fancy yarn sample corresponding to the target pattern.

[0134] like Figure 6 As shown, in this embodiment, the target pattern of the color-spun fancy yarn sample is a striped pattern. Therefore, the roving of the color-spun fancy yarn sample corresponding to the striped pattern is spun as follows: After stretching the first cotton sliver AL and the second cotton sliver BL side by side in parallel, a third cotton sliver H is obtained.

[0135] The third cotton sliver H is twisted and spun into the fifth roving I of the colored spun fancy yarn sample with the corresponding striped pattern.

[0136] This invention uses a cotton sliver sample machine 100 and a handheld pneumatic twister 200 to spin rovings of colored spun fancy yarn samples corresponding to the target pattern.

[0137] Combination Figure 2 , Figure 3 and Figure 6 In this embodiment, a cotton sliver sample machine 100 and a handheld pneumatic twister 200 are used to spin the roving of the colored spun fancy yarn sample corresponding to the striped pattern.

[0138] Disassemble the collecting roller 106 of the cotton swab sample machine 100, and place the handheld pneumatic twister 200 at the output roller 104 of the cotton swab sample machine 100, with the twisting nozzle 204 of the handheld pneumatic twister 200 facing the output roller 104 of the cotton swab sample machine 100.

[0139] Adjust the micro air pump 201 to apply a twisting air pressure of 0.5 MPa to the silicone twist groove 203, and lock the twist of the silicone twist groove 203 to 4 twists / cm through the parameter encoder 205.

[0140] The first tampon AL and the second tampon BL are passed side by side through the input roller 101 and the output roller 103 of the tampon sample machine 100 for stretching, and then the third tampon H is output.

[0141] The third cotton sliver H is fed into the silicone twisting groove 203 by the twisting nozzle 204 of the hand-held pneumatic twister 200. The silicone twisting groove 203 twists the third cotton sliver H and spins it into the fifth roving I of the colored spun fancy yarn sample with corresponding striped pattern.

[0142] The fifth roving I spun is 30-60 cm long, uniform in thickness, and has a certain degree of twist.

[0143] Step S4, Spinning of color-spun fancy yarn samples: Draft the roving of the color-spun fancy yarn sample corresponding to the target pattern and spin it into a color-spun fancy yarn sample corresponding to the target pattern.

[0144] like Figure 6 As shown, in this embodiment, the target pattern of the colored spun fancy yarn sample is a striped pattern. Therefore, the fifth roving I is drafted and spun into a colored spun fancy yarn sample J (fine yarn) with the corresponding striped pattern.

[0145] Specifically, a fine yarn sample machine is used to draft the fifth roving I at a speed ratio of 1:4 to 1:6 to produce a color-spun fancy yarn sample J (fine yarn) with the corresponding striped pattern.

[0146] The yarn count of the colored spun fancy yarn sample corresponding to the target pattern spun according to the present invention is 10 to 60S (count). In this embodiment, the yarn count of the colored spun fancy yarn sample J (fine yarn) corresponding to the striped pattern is 40S (count), and the length of the colored spun fancy yarn sample J (fine yarn) corresponding to the striped pattern is 10 to 50M.

[0147] The present invention does not specifically limit the fine yarn sample machine. Those skilled in the art can use existing fine yarn sample machines to spin roving into color-spun fancy yarn sample J (fine yarn) with corresponding striped patterns.

[0148] like Figure 7 As shown, in this embodiment, the spun striped patterned yarn sample J is passed through a yarn hole 301 of the yarn sample card 300 and wound onto the yarn sample card 300.

[0149] Color matching and sampling are performed on the small sample J of the striped patterned colored spun yarn: Manual color matching: Under D65 light source, 3 technicians compare the striped patterned yarn sample J with the color card provided by the customer. All 3 technicians judged it to be qualified (color difference acceptance rate = 100%).

[0150] Color matching: A spectrophotometer is used to scan the striped patterned yarn sample J to obtain the CIE Lab value and calculate the color difference value ΔE. The obtained color difference value ΔE = 1.

[0151] Store the judgment results obtained by manual color matching (color difference acceptance rate = 100%) and the results obtained by instrument color matching (color difference value ΔE = 1).

[0152] The color matching and sampling results of the color-spun fancy yarn samples prepared by traditional processes and the color-spun fancy yarn samples prepared by the present invention are compared, as shown in Table 1.

[0153] Table 1. Comparison of color matching and sampling results between color-spun fancy yarn samples prepared by traditional methods and color-spun fancy yarn samples prepared by the present invention. Raw material usage 500g 0.5～1g 99.8%↓ Prototype cycle 72h 2h 97.2%↓ Twist uniformity CV≥15% CV≤5% 3 times ↑ Color difference pass rate 60%～70% ≥95% 35%↑ As can be seen from Table 1, the colored spun fancy yarn samples prepared by the present invention can effectively save raw material consumption, quickly produce samples, improve sampling efficiency, reduce production costs, and improve twist uniformity and color difference qualification rate.

[0154] The following points need to be explained: (1) The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention. Other structures can refer to the general design. (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the invention, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0155] (3) Where there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0156] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for efficient and low-cost preparation of a small sample of colored spun fancy yarn with controllable microfiber structure, characterized in that, The preparation method includes: S1. Layered treatment of trace raw materials: According to the target pattern of the colored spun fancy yarn sample, weigh the raw materials of group A and group B. The trace raw materials are 0.5-1g. The target pattern of the colored spun fancy yarn sample is a checkered pattern, an iridescent pattern, or a striped pattern; Among them, Group A uses combed colored cotton, or a mixture of combed colored cotton and chemical fiber, or mixed colored cellulose fiber as raw material. Group B uses combed white cotton, or a blend of combed white cotton and chemical fibers, or mixed-color cellulose fibers as raw materials. S2. Control the fiber orientation of raw materials A and B: lay raw materials A in layers to form the first cotton layer and raw materials B in layers to form the second cotton layer. The first cotton layer and the second cotton layer are subjected to 5 to 10 directional stretchings respectively, and the fiber orientation angle of the first cotton layer and the second cotton layer is controlled to be ≤15°, and the first cotton sliver and the second cotton sliver are output. S3. Fancy directional construction: According to the target pattern of the colored spun fancy yarn sample, the first cotton sliver and the second cotton sliver are spun into rovings of the colored spun fancy yarn sample corresponding to the target pattern. The roving spinning process involves twisting the first cotton sliver and the second cotton sliver separately, twisting the second cotton sliver to spin the third roving and then combining it with the first cotton sliver for drafting and twisting, and twisting the first cotton sliver and the second cotton sliver side by side for drafting and twisting. The twisting is done using a handheld pneumatic twister, which includes a miniature air pump, a twist controller, a silicone twist groove, a twisting nozzle, and a parameter encoder. S4. Spinning of color-spun fancy yarn samples: The roving of the color-spun fancy yarn sample corresponding to the target pattern is drafted and spun into a color-spun fancy yarn sample corresponding to the target pattern.

2. The production method according to claim 1, characterized by, In step S1, the types of raw materials A and B are determined according to the target pattern of the spun fancy yarn sample: When the target pattern of the colored spun fancy yarn sample is a grid pattern, the raw material for group A is combed colored cotton and the raw material for group B is combed white cotton. When the target pattern of the colored spun fancy yarn sample is the iridescent pattern, the raw materials of group A are a mixture of combed colored cotton and chemical fiber, and the raw materials of group B are a mixture of combed white cotton and chemical fiber. When the target pattern of the yarn-dyed fancy yarn sample is a striped pattern, the raw materials for group A are mixed-color cellulose fibers and the raw materials for group B are mixed-color cellulose fibers.

3. The preparation method according to claim 1, characterized in that, In step S2, a cotton swab sample machine is used to control the fiber orientation of raw materials A and B. The tampon sample making machine includes at least an input roller and an output roller. The distance between the input roller and the output roller is determined according to the types of raw materials A and B. When group A uses combed colored cotton and group B uses combed white cotton, the distance between the input roller and the output roller is 32-35mm. When Group A uses a mixture of combed colored cotton and chemical fiber, and Group B uses a mixture of combed white cotton and chemical fiber, the distance between the input roller and the output roller is 33-42mm. When both Group A and Group B use mixed-color cellulose fibers, the distance between the input roller and the output roller is 40-45 mm.

4. The preparation method according to claim 1, characterized in that, In step S3, when the target pattern of the color-spun fancy yarn sample is a grid pattern, the roving of the color-spun fancy yarn sample corresponding to the grid pattern is spun according to the following method: The first cotton sliver is stretched and twisted to spin the first roving of the color-spun fancy yarn sample corresponding to the grid pattern. The second cotton sliver is stretched and twisted to spin the second roving of the color-spun fancy yarn sample corresponding to the grid pattern. In step S4, when the target pattern of the colored spun fancy yarn sample is a grid pattern, the first roving and the second roving are combined and stretched to spin into a colored spun fancy yarn sample with the corresponding grid pattern.

5. The preparation method according to claim 1, characterized in that, In step S3, when the target pattern of the colored spun fancy yarn sample is an iridescent pattern, the roving of the colored spun fancy yarn sample corresponding to the iridescent pattern is spun according to the following method: The second cotton sliver is stretched and twisted to spin the third roving into the color-spun fancy yarn sample corresponding to the color-spun fancy yarn sample; The first cotton sliver and the third roving are combined, stretched, and twisted to spin the fourth roving of the color-spun fancy yarn sample corresponding to the color-spun fancy yarn sample. In step S4, when the target pattern of the colored spun fancy yarn sample is an iridescent pattern, the four rovings are drafted and spun into a colored spun fancy yarn sample corresponding to the iridescent pattern.

6. The preparation method according to claim 1, characterized in that, In step S3, when the target pattern of the color-spun fancy yarn sample is a striped pattern, the roving of the color-spun fancy yarn sample corresponding to the striped pattern is spun according to the following method: After stretching the first and second cotton slivers side by side in parallel, a third cotton sliver is obtained; The third cotton sliver is twisted and spun into the fifth roving of the color-spun fancy yarn sample with the corresponding striped pattern; In step S4, when the target pattern of the colored spun fancy yarn sample is a striped pattern, the five-coarse yarn is drafted and spun into a colored spun fancy yarn sample with the corresponding striped pattern.

7. A sample swab machine for use in the preparation method according to any one of claims 1 to 6, characterized in that, The tampon sample machine includes: An input roller and an input skin roller, the input roller and the input skin roller forming an input end; An output roller and an output skin roller, wherein the output roller and the output skin roller form an output end; The distance between the input terminal and the output terminal is adjustable; A detachable pile roller is disposed at the output end formed by the output roller and the output skin roller. A spacing scale is used to measure the distance between the input terminal and the output terminal.

8. The sliver sample making machine according to claim 7, characterized in that, The tampon sample machine also includes: a first pressure spring and a second pressure spring; The first pressure spring is used to apply input roller pressure to the input roller; The second pressure spring is used to apply output roller pressure to the output roller.

9. A handheld pneumatic twister for use in the preparation method according to any one of claims 1 to 6, characterized in that, The handheld pneumatic twister includes a miniature air pump, a silicone twist groove, and a twisting nozzle; The twisting nozzle is connected to the silicone twisting groove; The micro air pump is connected to the silicone twisting groove and is used to apply twisting air pressure to the silicone twisting groove to drive the silicone twisting groove to rotate.

10. The handheld pneumatic twister according to claim 9, characterized in that, The handheld pneumatic twister also includes a twist controller; The twist controller is used to control the twist of the silicone twist groove.

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