Segment color chenille yarn pattern conversion method based on skein space dyeing process and application

Abstract

The invention relates to a skein space dyeing process-based section-color chenille yarn pattern conversion method, which aims at the process of obtaining section-color chenille yarn by processing space-dyed skein through section-color cheese, and is based on the design of pattern models in which the space-dyed skein, the section-color cheese and the section-color chenille yarn respectively correspond to single pattern periods. Constructing an interconversion model between every two yarns about the pattern model; and designing a corresponding application, aiming at the actual design and spinning process of the segment-colored chenille yarn, designing a pattern according to the segment-dyed skein, and realizing accurate prediction aiming at the pattern of the corresponding segment-colored chenille yarn, or reversing the pattern of the corresponding segment-dyed skein according to the pattern of the segment-colored chenille yarn. The design and spinning efficiency and accuracy of the segment color chenille yarn can be effectively improved.

Description

Technical Field

[0001] The present invention relates to a method for pattern conversion of section-colored chenille yarn based on hank yarn section dyeing process and its application, belonging to the technical field of spinning. Background Art

[0002] Section-colored chenille yarn is a chenille yarn with various color distributions along the length direction. The section-colored chenille yarn is obtained through a special section dyeing method, which not only retains the characteristics of the chenille yarn such as lightness, softness, and good elasticity, but also adds a sense of layering of color changes through the combination of multiple colors. When it is used to develop woven fabrics, knitted fabrics, and tufted fabrics, it can endow the fabrics with a strong sense of fashion and visual impact. Due to the unique appearance structure, good drapability, water absorption, and rich decorative effects of the section-colored chenille yarn, it is widely used in the fields of home textiles and knitted clothing, etc.

[0003] When producing section-colored chenille yarn based on section-dyed hank yarn, generally, the section-dyed hank yarn is first obtained by section dyeing the hank yarn, then the section-dyed hank yarn is converted into section-colored cheese yarn, and then the section-colored cheese yarn is used as the decorative yarn, and two conventional yarns are used as the core yarns. The two core yarns output by the feeding rollers respectively pass through the upper and lower sides of the decorative yarn through the front guide yarn roller and the yarn guide eye and enter the twisting zone; the decorative yarn is wound on the spacer, and under the push of the front guide yarn roller, it moves along the yarn guide plate towards the twisting zone. During the movement, the decorative yarn is cut by the blade hidden in the spacer and is successively pushed into the twisting zone between the two groups of core yarns in a direction perpendicular to the core yarns. The two mutually twisted core yarns hold the decorative yarn and are firmly clamped to form a section-colored chenille yarn with a special structure and color segment distribution.

[0004] When section dyeing the hank yarn, about 80 nozzles are arranged along the width direction to spray 2-8 kinds of dyeing liquids respectively to spray-dye the hank yarn. By configuring different colors and their distribution widths, the hank yarn is spray-dyed to obtain the section-dyed hank yarn. At this time, the color arrangement order and its distribution law presented on the section-dyed hank yarn are called the color arrangement pattern (or section-dyed hank yarn pattern) of the section-dyed hank yarn; then the section-dyed hank yarn is wound onto a cheese to be converted into section-colored cheese yarn, and the color arrangement order and its distribution law presented on the section-colored cheese yarn are called the color arrangement pattern (or section-colored yarn pattern) of the section-colored cheese yarn; finally, the section-colored cheese yarn is used as the decorative yarn to spin chenille yarn to obtain the section-colored chenille yarn, and the color arrangement order and its distribution law presented on the section-colored chenille yarn are called the color arrangement pattern (or section-colored chenille yarn pattern) of the section-colored chenille yarn.

[0005] Since the distribution rules of the segment-dyed hank yarn pattern, segment-colored cheese yarn pattern, and segment-colored chenille yarn pattern are not exactly the same, it is necessary to deduce the segment-colored cheese yarn segment-color distribution rule based on the segment-dyed hank yarn distribution rule, and then further obtain the segment-colored chenille yarn pattern. However, how to perform the conversion between the segment-dyed hank yarn pattern, segment-colored cheese yarn pattern, and segment-colored chenille yarn pattern? The existing technology lacks corresponding guidance, which leads to low production efficiency of segment-colored chenille yarn under the existing technology. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a pattern conversion method for segment-colored chenille yarn based on the segment-dyed hank yarn process, and through model construction and design, achieve efficient conversion among the segment-dyed hank yarn pattern, segment-colored cheese yarn pattern, and segment-colored chenille yarn pattern.

[0007] The present invention adopts the following technical solutions to solve the above technical problems: The present invention designs a pattern conversion method for segment-colored chenille yarn based on the segment-dyed hank yarn process. For the process of obtaining segment-colored chenille yarn by processing segment-dyed hank yarn through segment-colored cheese yarn, the following steps A to B are executed to construct a pattern conversion method;

[0008] Step A. Respectively for the segment-dyed hank yarn, segment-colored cheese yarn, and segment-colored chenille yarn, construct a pattern model corresponding to the single pattern cycle regarding the color and length of the color segments, and then enter Step B;

[0009] Step B. Based on the pattern models corresponding to the single pattern cycle of the segment-dyed hank yarn, segment-colored cheese yarn, and segment-colored chenille yarn respectively, construct an inter-conversion model regarding the pattern models between the segment-dyed hank yarn and the segment-colored cheese yarn, an inter-conversion model regarding the pattern models between the segment-colored cheese yarn and the segment-colored chenille yarn, and an inter-conversion model regarding the pattern models between the segment-dyed hank yarn and the segment-colored chenille yarn.

[0010] As a preferred technical solution of the present invention: In the above Step A, the pattern model corresponding to the single pattern cycle of the segment-dyed hank yarn regarding the color and length of the color segments is constructed as follows:

[0011]

[0012] Among them, n1 represents the number of color segments in the single pattern cycle corresponding to the segment-dyed hank yarn, C(i) represents the color of the i-th color segment in the single pattern cycle corresponding to the segment-dyed hank yarn, and h(i) represents the length of the i-th color segment in the single pattern cycle corresponding to the segment-dyed hank yarn;

[0013] The pattern model corresponding to the single pattern cycle of the segment-colored cheese yarn regarding the color and length of the color segments is constructed as follows:

[0014]

[0015] Among them, n2 represents the number of color segments in the single pattern cycle corresponding to the segment-colored cheese yarn, represents the color of the j-th color segment in the single flower pattern cycle corresponding to the segment-dyed cheese yarn, represents the length of the j-th color segment in the single flower pattern cycle corresponding to the segment-dyed cheese yarn;

[0016] Construct the flower pattern model of the segment-dyed chenille yarn corresponding to the single flower pattern cycle with respect to the color and length of the color segments as follows:

[0017]

[0018] where n3 represents the number of color segments in the single flower pattern cycle corresponding to the segment-dyed chenille yarn, represents the color of the k-th color segment in the single flower pattern cycle corresponding to the segment-dyed chenille yarn, represents the length of the k-th color segment in the single flower pattern cycle corresponding to the segment-dyed chenille yarn.

[0019] As a preferred technical solution of the present invention: in the step B, based on the flower pattern models of the hank yarn dyed in sections and the segment-dyed cheese yarn corresponding to the single flower pattern cycle respectively, construct the mutual conversion model of the hank yarn dyed in sections and the segment-dyed cheese yarn with respect to the flower pattern model as follows:

[0020] Based on n2 = 2n1 - 2, according to the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the hank yarn dyed in sections, construct the color and length of each color segment in the single flower pattern cycle corresponding to the segment-dyed cheese yarn as follows:

[0021]

[0022] Then, according to the flower pattern model of the hank yarn dyed in sections corresponding to the single flower pattern cycle, obtain the flower pattern model of the segment-dyed cheese yarn corresponding to the single flower pattern cycle as follows:

[0023]

[0024] Based on n1 = n2 / 2 + 1, according to the color and length of each color segment in the single flower pattern cycle corresponding to the segment-dyed cheese yarn, construct the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the hank yarn dyed in sections as follows:

[0025]

[0026] Then, according to the flower pattern model of the segment-dyed cheese yarn corresponding to the single flower pattern cycle, obtain the flower pattern model of the hank yarn dyed in sections corresponding to the single flower pattern cycle as follows:

[0027]

[0028] As a preferred technical solution of the present invention: in step B, based on the pattern models of the section-colored cheese yarn and the section-colored chenille yarn corresponding to a single pattern cycle, the following mutual conversion model between the section-colored cheese yarn and the section-colored chenille yarn regarding the pattern model is constructed:

[0029] During the spinning process of the section-colored chenille yarn, the section-colored cheese yarn is wound as an ornamental yarn on the spacer, cut by a blade and output to both sides. According to the width of the spacer being H and the thickness of the spacer being T, the length d of each ornamental yarn in the section-colored chenille yarn is obtained as d = 2×(H + T);

[0030] Based on n3 = n2, according to the colors and lengths of each color segment in the single pattern cycle corresponding to the section-colored cheese yarn, the colors and lengths

[0031]

[0032] of each color segment in the single pattern cycle corresponding to the section-colored chenille yarn are constructed as follows:

[0033]

[0034] Based on n2 = n3, according to the colors and lengths of each color segment in the single pattern cycle corresponding to the section-colored chenille yarn, the colors and lengths

[0035]

[0036] of each color segment in the single pattern cycle corresponding to the section-colored cheese yarn are constructed as follows:

[0037]

[0038] As a preferred technical solution of the present invention: in step B, based on the pattern models of the space-dyed hank yarn and the section-colored chenille yarn corresponding to a single pattern cycle, the following mutual conversion model between the space-dyed hank yarn and the section-colored chenille yarn regarding the pattern model is constructed:

[0039] During the spinning process of the section-colored chenille yarn, the section-colored cheese yarn is wound as an ornamental yarn on the spacer, cut by a blade and output to both sides. According to the width of the spacer being H and the thickness of the spacer being T, the length d of each ornamental yarn in the section-colored chenille yarn is obtained as d = 2×(H + T);

[0040] Based on n3 = 2n1 - 2, according to the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the space-dyed hank yarn, construct the color of each color segment in the single flower pattern cycle corresponding to the space-dyed chenille yarn and length as follows:

[0041]

[0042] Then, according to the flower pattern model of the space-dyed hank yarn corresponding to the single flower pattern cycle, obtain the flower pattern model of the space-dyed chenille yarn corresponding to the single flower pattern cycle as follows:

[0043]

[0044] Based on n1 = n3 / 2 + 1, according to the color of each color segment in the single flower pattern cycle corresponding to the space-dyed chenille yarn and length construct the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the space-dyed hank yarn as follows:

[0045]

[0046] Then, according to the flower pattern model of the space-dyed chenille yarn corresponding to the single flower pattern cycle, obtain the flower pattern model of the space-dyed hank yarn corresponding to the single flower pattern cycle as follows:

[0047]

[0048] Corresponding to the above, the technical problem to be solved by the present invention is to provide an application of the flower pattern conversion method for space-dyed chenille yarn based on the hank yarn space-dyeing process, which can efficiently realize the rapid conversion between the flower patterns of space-dyed hank yarn and space-dyed chenille yarn, and improve the working efficiency and flower pattern accuracy of space-dyed chenille yarn weaving.

[0049] The present invention adopts the following technical solutions to solve the above technical problems: The present invention designs an application of the flower pattern conversion method for space-dyed chenille yarn based on the hank yarn space-dyeing process, including performing the following steps C1 to C3 according to the flower pattern of the target space-dyed hank yarn to construct the flower pattern corresponding to the target space-dyed chenille yarn;

[0050] Step C1. According to the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the target space-dyed hank yarn flower pattern, and the number n1 of color segments in the single flower pattern cycle of the target space-dyed hank yarn, 1 ≤ i ≤ n1, and according to n2 = 2n1 - 2, 1 ≤ j ≤ n2, execute the following formula:

[0051]

[0052] Obtain the color of each color segment in the single flower pattern cycle corresponding to the target space-dyed cheese yarn and the length and the number n2 of color segments in the single pattern cycle of the corresponding target section-colored cone yarn, and then enter step C2;

[0053] Step C2. During the spinning process of section-colored chenille yarn, the section-colored cone yarn is wound around the spacer as the decorative yarn, cut by the blade and output to both sides. According to the width H of the spacer and the thickness T of the spacer, the length d of each decorative yarn in the corresponding target section-colored chenille yarn is obtained as d = 2×(H + T), and then enter step C3;

[0054] Step C3. According to the colors and the length of each color segment in the single pattern cycle corresponding to the pattern of the corresponding target section-colored cone yarn, and the number n2 of color segments in the single pattern cycle of the corresponding target section-colored cone yarn, with n3 = n2, 1≤k≤n3, execute the following formula:

[0055]

[0056] Obtain the colors of each color segment in the single pattern cycle corresponding to the corresponding target section-colored chenille yarn and the length and the number n3 of color segments in the single pattern cycle of the corresponding target section-colored chenille yarn.

[0057] As a preferred technical solution of the present invention: According to the pattern of the target section-dyed hank yarn, perform the following operations to construct the pattern of the corresponding target section-colored chenille yarn;

[0058] First, during the spinning process of section-colored chenille yarn, the section-colored cone yarn is wound around the spacer as the decorative yarn, cut by the blade and output to both sides. According to the width H of the spacer and the thickness T of the spacer, the length d of each decorative yarn in the corresponding target section-colored chenille yarn is obtained as d = 2×(H + T);

[0059] Then, according to the colors C(i) and lengths h(i) of each color segment in the single pattern cycle corresponding to the pattern of the target section-dyed hank yarn, and the number n1 of color segments in the single pattern cycle of the target section-dyed hank yarn, 1≤i≤n1, with n3 = 2n1 - 2, 1≤k≤n3, execute the following formula:

[0060]

[0061] Obtain the colors of each color segment in the single pattern cycle corresponding to the corresponding target section-colored chenille yarn and the length and the number n3 of color segments in the single pattern cycle of the corresponding target section-colored chenille yarn.

[0062] As a preferred technical solution of the present invention: It further includes performing the following steps D1 to D3 according to the pattern of the target section-dyed chenille yarn to construct the corresponding pattern of the target section-dyed hank yarn.

[0063] Step D1. During the spinning process of the section-dyed chenille yarn, the section-dyed cheese yarn is used as the decorative yarn and wound on the spacer, and after being cut by the blade, it is output to both sides. According to the width of the spacer being H and the thickness of the spacer being T, the length d of each decorative yarn in the target section-dyed chenille yarn is obtained as d = 2×(H + T), and then step D2 is entered.

[0064] Step D2. According to the colors and lengths of each color segment in the single pattern cycle corresponding to the target section-dyed chenille yarn pattern, and the number n3 of color segments in the single pattern cycle of the target section-dyed chenille yarn pattern, where 1≤k≤n3, and n2 = n3, 1≤j≤n2, the following formula is executed:

[0065]

[0066] The colors and lengths of each color segment in the single pattern cycle corresponding to the target section-dyed cheese yarn are obtained, and the number n2 of color segments in the single pattern cycle of the corresponding target section-dyed cheese yarn is obtained, and then step D3 is entered.

[0067] Step D3. According to the colors and lengths of each color segment in the single pattern cycle corresponding to the target section-dyed cheese yarn, and the number n2 of color segments in the single pattern cycle of the corresponding target section-dyed cheese yarn, where n1 = n2 / 2 + 1, 1≤i≤n1, the following formula is executed:

[0068]

[0069] The colors C(i) and lengths h(i) of each color segment in the single pattern cycle corresponding to the target section-dyed hank yarn are obtained, as well as the number n1 of color segments in the single pattern cycle of the corresponding target section-dyed hank yarn.

[0070] As a preferred technical solution of the present invention: According to the pattern of the target section-dyed chenille yarn, perform the following operations to construct the corresponding pattern of the target section-dyed hank yarn;

[0071] First, during the spinning process of the section-dyed chenille yarn, the section-dyed cheese yarn is used as the decorative yarn and wound on the spacer, and after being cut by the blade, it is output to both sides. According to the width of the spacer being H and the thickness of the spacer being T, the length d of each decorative yarn in the target section-dyed chenille yarn is obtained as d = 2×(H + T);

[0072] Then, according to the colors With the length And the number of color segments n3 in the single flower pattern cycle of the target segment dyed hank yarn, 1 ≤ k ≤ n3, and 1 ≤ i ≤ n1 where n1 = n3 / 2 + 1, execute the following formula:

[0073]

[0074] Obtain the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the target segment dyed hank yarn, and the number n1 of color segments in the single flower pattern cycle of the corresponding target segment dyed hank yarn.

[0075] The method and application for converting the flower pattern of segment-colored chenille yarn based on the hank yarn segment dyeing process according to the present invention, compared with the prior art by adopting the above technical solutions, have the following technical effects:

[0076] (1) The method for converting the flower pattern of segment-colored chenille yarn based on the hank yarn segment dyeing process designed by the present invention, aiming at the process of obtaining segment-colored chenille yarn by processing segment-dyed hank yarn through segment-colored cheese yarn, starting from the design of the flower pattern models corresponding to the single flower pattern cycle of segment-dyed hank yarn, segment-colored cheese yarn, and segment-colored chenille yarn respectively, constructs an inter-conversion model of the flower pattern models between two yarns; and designs corresponding applications. For the actual design and textile process of segment-colored chenille yarn, design the flower pattern according to the segment-dyed hank yarn, accurately predict the corresponding segment-colored chenille yarn flower pattern, or reverse the corresponding segment-dyed hank yarn flower pattern according to the flower pattern of the segment-colored chenille yarn, which can effectively improve the efficiency and accuracy of the design and textile of segment-colored chenille yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 It is a schematic diagram of the color and length of each color segment in the single flower pattern cycle corresponding to the segment-dyed hank yarn;

[0078] Figure 2 It is a schematic diagram of the color and length of each color segment in the single flower pattern cycle corresponding to the segment-colored cheese yarn;

[0079] Figure 3 It is a schematic diagram of the color and length of each color segment in the single flower pattern cycle corresponding to the segment-colored chenille yarn;

[0080] Figure 4a It is a schematic diagram of the color and length of each color segment in the corresponding example of the segment-colored cheese yarn;

[0081] Figure 4b It is a schematic diagram of the movement trajectory of the decorative yarn during the textile process of chenille yarn;

[0082] Figure 4c It is corresponding to the segment-colored chenille yarn Figure 4a A schematic diagram of the color and length of each color segment in the example;

[0083] Figure 5It is a schematic list showing the corresponding target-section colored cheese yarn pattern obtained according to the target-section dyed hank yarn pattern conversion in the embodiment;

[0084] Figure 6 It is a schematic list showing the corresponding target-section dyed hank yarn pattern obtained according to the target-section colored cheese yarn pattern conversion in the embodiment;

[0085] Figure 7 It is a schematic list showing the colors of each section presented in the embodiment of hank yarn section dyeing;

[0086] Figure 8 It is a schematic diagram of the process of section-coloring hank yarn dyeing;

[0087] Figure 9 It is a schematic diagram of the structure of a hank yarn section dyeing machine;

[0088] Figure 10 It is a schematic diagram of different-color section-dyed hank yarns obtained by spray dyeing according to the parameters shown in Table 2 in the embodiment;

[0089] Figure 11 It is Figure 10 A schematic diagram showing the corresponding section-colored cheese yarns respectively converted from the section-dyed hank yarns of different colors shown.

[0090] Among them, 1. Chemical material cylinder, 2. Dyeing solution, 3. Feed pump, 4. Connector, 5. Delivery hose, 6. Nozzle, 7. Hank yarn, 8. Hank yarn conveyor belt, 9. Roller. Specific embodiments

[0091] The following further elaborates on the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0092] In view of the deficiencies of the prior art, the present invention specifically designs a method for converting the pattern of section-color chenille yarn based on the hank yarn section dyeing process. For the process of obtaining section-color chenille yarn from section-dyed hank yarn through section-colored cheese yarn processing, the following steps A to B are executed to construct a pattern conversion method.

[0093] Step A. Respectively construct pattern models for the corresponding single pattern cycle regarding the section colors and lengths of section-dyed hank yarn, section-colored cheese yarn, and section-color chenille yarn, and then proceed to step B.

[0094] In practical applications, as Figure 1 shown, when the hank yarn with a perimeter of 2L1 is straightened and section-dyed within a width of L1, if it is divided into n1 color sections based on the width L1 and p colors are sprayed in sequence (n1≥p), then the pattern model for the corresponding single pattern cycle of the section-dyed hank yarn regarding the section colors and lengths is constructed as follows:

[0095]

[0096] Among them, n1 represents the number of color segments in a single flower pattern cycle corresponding to the section-dyed twisted yarn, C(i) represents the color of the i-th color segment in a single flower pattern cycle corresponding to the section-dyed twisted yarn, and h(i) represents the length of the i-th color segment in a single flower pattern cycle corresponding to the section-dyed twisted yarn.

[0097] As Figure 2 shown, the flower pattern model of the section-colored cheese yarn corresponding to a single flower pattern cycle with respect to the color and length of the color segments is constructed as follows:

[0098]

[0099] Among them, n2 represents the number of color segments in a single flower pattern cycle corresponding to the section-colored cheese yarn, represents the color of the j-th color segment in a single flower pattern cycle corresponding to the section-colored cheese yarn, represents the length of the j-th color segment in a single flower pattern cycle corresponding to the section-colored cheese yarn.

[0100] As Figure 3 shown, the flower pattern model of the section-colored chenille yarn corresponding to a single flower pattern cycle with respect to the color and length of the color segments is constructed as follows:

[0101]

[0102] Among them, n3 represents the number of color segments in a single flower pattern cycle corresponding to the section-colored chenille yarn, represents the color of the k-th color segment in a single flower pattern cycle corresponding to the section-colored chenille yarn, represents the length of the k-th color segment in a single flower pattern cycle corresponding to the section-colored chenille yarn.

[0103] Step B. Based on the flower pattern models of the section-dyed twisted yarn, section-colored cheese yarn, and section-colored chenille yarn corresponding to a single flower pattern cycle respectively, construct the mutual conversion models of the flower pattern models between the section-dyed twisted yarn and the section-colored cheese yarn, between the section-colored cheese yarn and the section-colored chenille yarn, and between the section-dyed twisted yarn and the section-colored chenille yarn.

[0104] In practical applications, for the mutual conversion model of the flower pattern models between the section-dyed twisted yarn and the section-colored cheese yarn, based on the flower pattern models of the section-dyed twisted yarn and the section-colored cheese yarn corresponding to a single flower pattern cycle respectively, it is constructed as follows:

[0105] Based on n2 = 2n1 - 2, that is, n2 is an even number, according to the color C(i) and length h(i) of each color segment in the single flower pattern cycle corresponding to the section-dyed twisted yarn, construct the color and length of each color segment in the single flower pattern cycle corresponding to the section-colored cheese yarn as follows:

[0106]

[0107] According to the pattern model of the space-dyed hank yarn corresponding to a single pattern cycle, the pattern model of the space-dyed cheese yarn corresponding to a single pattern cycle is obtained as follows:

[0108]

[0109] Based on the conversion rule between the space-dyed hank yarn and the space-dyed cheese yarn, the maximum number of color segments n2 within one pattern cycle of the space-dyed cheese yarn must be an even number. Then, the number of color segments n1 within one pattern cycle of the space-dyed hank yarn is n1 < n2. Based on n1 = n2 / 2 + 1, according to the colors and lengths of each color segment in the single pattern cycle of the space-dyed cheese yarn, the colors C(i) and lengths h(i) of each color segment in the single pattern cycle of the space-dyed hank yarn are constructed as follows:

[0110]

[0111] According to the pattern model of the space-dyed cheese yarn corresponding to a single pattern cycle, the pattern model of the space-dyed hank yarn corresponding to a single pattern cycle is obtained as follows:

[0112]

[0113] Regarding the mutual conversion model of the pattern model between the space-dyed cheese yarn and the space-dyed chenille yarn, based on the pattern models of the space-dyed cheese yarn and the space-dyed chenille yarn corresponding to a single pattern cycle respectively, the following is constructed:

[0114] During the spinning process of the space-dyed chenille yarn, the space-dyed cheese yarn is used as the decorative yarn and wound on the spacer. After being cut by the blade, it is output to both sides. According to the width of the spacer being H and the thickness of the spacer being T, the length d of each decorative yarn in the space-dyed chenille yarn is obtained as d = 2×(H + T).

[0115] In practical applications, such as Figure 4a 、 Figure 4b 、 Figure 4c , it is found that the colors of each color segment in the space-dyed cheese yarn and the space-dyed chenille yarn are the same within the pattern cycle, but the segment lengths of each color segment are different. That is, based on n3 = n2, according to the colors and lengths of each color segment in the single pattern cycle of the space-dyed cheese yarn, the colors and lengths of each color segment in the single pattern cycle of the space-dyed chenille yarn are constructed as follows:

[0116]

[0117] According to the pattern model of the space-dyed cheese yarn corresponding to a single pattern cycle, the pattern model of the space-dyed chenille yarn corresponding to a single pattern cycle is obtained as follows:

[0118]

[0119] Based on n2 = n3, according to the colors of each colored segment in the single flower pattern cycle of the section-colored chenille yarn and lengths Construct the colors of each colored segment in the single flower pattern cycle of the section-colored cheese yarn and lengths as follows:

[0120]

[0121] Then, based on the flower pattern model of the section-colored chenille yarn corresponding to the single flower pattern cycle, the flower pattern model of the section-colored cheese yarn corresponding to the single flower pattern cycle is obtained as follows:

[0122]

[0123] Regarding the mutual conversion model of the flower pattern between the space-dyed hank yarn and the section-colored chenille yarn, based on the flower pattern models of the space-dyed hank yarn and the section-colored chenille yarn corresponding to the single flower pattern cycle respectively, it is constructed as follows:

[0124] During the spinning process of the section-colored chenille yarn, the section-colored cheese yarn is wound around the spacer as the decorative yarn, cut by the blade and output to both sides. According to the width of the spacer being H and the thickness of the spacer being T, the length d of each decorative yarn in the section-colored chenille yarn is obtained as d = 2×(H + T);

[0125] Based on n3 = 2n1 - 2, according to the colors C(i) and lengths h(i) of each colored segment in the single flower pattern cycle of the space-dyed hank yarn, construct the colors and lengths as follows:

[0126]

[0127] Then, based on the flower pattern model of the space-dyed hank yarn corresponding to the single flower pattern cycle, the flower pattern model of the section-colored chenille yarn corresponding to the single flower pattern cycle is obtained as follows:

[0128]

[0129] Based on n1 = n3 / 2 + 1, according to the colors and lengths of each colored segment in the single flower pattern cycle of the section-colored chenille yarn, construct the colors C(i) and lengths h(i) of each colored segment in the single flower pattern cycle of the space-dyed hank yarn as follows:

[0130]

[0131] Then, based on the flower pattern model of the section-colored chenille yarn corresponding to the single flower pattern cycle, the flower pattern model of the space-dyed hank yarn corresponding to the single flower pattern cycle is obtained as follows:

[0132]

[0133] Based on the mutual conversion models of the pattern models between the section-dyed twisted yarn and the section-colored cheese yarn, between the section-colored cheese yarn and the section-colored chenille yarn, and between the section-dyed twisted yarn and the section-colored chenille yarn obtained from the above design, further design the applications in practice, including performing the following steps C1 to C3 according to the pattern of the target section-dyed twisted yarn to construct the pattern of the corresponding target section-colored chenille yarn.

[0134] Step C1. According to the color C(i) and length h(i) of each color section in the single pattern cycle corresponding to the target section-dyed twisted yarn pattern, and the number n1 of color sections in the single pattern cycle of the target section-dyed twisted yarn, where 1 ≤ i ≤ n1, perform the following formula according to n2 = 2n1 - 2, 1 ≤ j ≤ n2:

[0135]

[0136] Obtain the color of each color section in the single pattern cycle corresponding to the target section-colored cheese yarn and the length as well as the number n2 of color sections in the single pattern cycle of the corresponding target section-colored cheese yarn, and then enter Step C2.

[0137] In the actual application of the above Step C1, a specific implementation example is Figure 5 as shown in the table.

[0138] Step C2. During the spinning process of the section-colored chenille yarn, using the section-colored cheese yarn as the decorative yarn wound on the spacer, and after being cut by the blade and output to both sides, according to the width H of the spacer and the thickness T of the spacer, obtain the length d = 2×(H + T) of each decorative yarn in the corresponding target section-colored chenille yarn, and then enter Step C3.

[0139] Step C3. According to the color and length h(j) of each color section in the single pattern cycle corresponding to the pattern of the corresponding target section-colored cheese yarn, and the number n2 of color sections in the single pattern cycle of the corresponding target section-colored cheese yarn, perform the following formula according to n3 = n2, 1 ≤ k ≤ n3:

[0140]

[0141] Obtain the color of each color section in the single pattern cycle corresponding to the target section-colored chenille yarn and the length as well as the number n3 of color sections in the single pattern cycle of the corresponding target section-colored chenille yarn.

[0142] According to the above implementation steps C1 to C3, in actual application, after conversion, the following operations can be directly performed according to the pattern of the target section-dyed hank yarn to construct the corresponding pattern of the target section-color chenille yarn.

[0143] First, during the spinning process of the section-color chenille yarn, the section-color cheese yarn is used as the decorative yarn and wound around the spacer. After being cut by the blade and output to both sides, according to the width of the spacer being H and the thickness of the spacer being T, the length d of each decorative yarn in the corresponding target section-color chenille yarn is obtained as d = 2×(H + T).

[0144] Then, according to the color C(i) and length h(i) of each color section in the corresponding single-pattern cycle of the target section-dyed hank yarn, and the number n1 of color sections in the single-pattern cycle of the target section-dyed hank yarn, where 1 ≤ i ≤ n1, and according to n3 = 2n1 - 2, 1 ≤ k ≤ n3, the following formula is executed:

[0145]

[0146] Obtain the color of each color section in the corresponding single-pattern cycle of the target section-color chenille yarn and the length as well as the number n3 of color sections in the single-pattern cycle of the corresponding target section-color chenille yarn.

[0147] The further designed application of the present invention also includes performing the following steps D1 to D3 according to the pattern of the target section-color chenille yarn to construct the corresponding pattern of the target section-dyed hank yarn.

[0148] Step D1. During the spinning process of the section-color chenille yarn, the section-color cheese yarn is used as the decorative yarn and wound around the spacer. After being cut by the blade and output to both sides, according to the width of the spacer being H and the thickness of the spacer being T, the length d of each decorative yarn in the target section-color chenille yarn is obtained as d = 2×(H + T), and then enter step D2.

[0149] Step D2. According to the color and length of each color section in the corresponding single-pattern cycle of the target section-color chenille yarn, and the number n3 of color sections in the single-pattern cycle of the target section-color chenille yarn pattern, where 1 ≤ k ≤ n3, and according to n2 = n3, 1 ≤ j ≤ n2, the following formula is executed:

[0150]

[0151] Obtain the color of each color section in the corresponding single-pattern cycle of the target section-color cheese yarn and the length as well as the number n2 of color sections in the single-pattern cycle of the corresponding target section-color cheese yarn, and then enter step D3.

[0152] Step D3. According to the color C(j) and length h(j) of each color segment in the corresponding single flower pattern cycle of the target segment colored bobbin yarn, and the number n2 of color segments in the single flower pattern cycle of the corresponding target segment colored bobbin yarn, with n1 = n2 / 2 + 1, 1 ≤ i ≤ n1, execute the following formula:

[0153]

[0154] Obtain the color C(i) and length h(i) of each color segment in the corresponding single flower pattern cycle of the target segment dyed hank yarn, and the number n1 of color segments in the single flower pattern cycle of the corresponding target segment dyed hank yarn.

[0155] In the actual application of the above Step D3, a specific implementation example is Figure 6 as shown in the table.

[0156] By performing Steps D1 to D3 as described above, in actual application, after conversion, the following operations can be directly performed according to the pattern of the target segment colored chenille yarn to construct the pattern of the corresponding target segment dyed hank yarn.

[0157] First, during the spinning process of the segment colored chenille yarn, the segment colored bobbin yarn is wound around the spacer as the decorative yarn, cut by the blade and output to both sides. According to the width H of the spacer and the thickness T of the spacer, the length d of each decorative yarn in the target segment colored chenille yarn is obtained as d = 2×(H + T).

[0158] Then, according to the color and length of each color segment in the corresponding single flower pattern cycle of the target segment colored chenille yarn pattern, as well as the number n3 of color segments in the single flower pattern cycle of the target segment colored chenille yarn pattern, 1 ≤ k ≤ n3, with n1 = n3 / 2 + 1, 1 ≤ i ≤ n1, execute the following formula:

[0159]

[0160] Obtain the color C(i) and length h(i) of each color segment in the corresponding single flower pattern cycle of the target segment dyed hank yarn, and the number n1 of color segments in the single flower pattern cycle of the corresponding target segment dyed hank yarn.

[0161] Apply the above-designed technical solution to the actual implementation, and execute the following in sequence:

[0162] 1. Design of the segment colored bobbin yarn pattern

[0163] Parameters such as the number of colors, the arrangement order of color segments, the length of each color segment, and the length of the pattern cycle of the segment-dyed cheese yarn have an important impact on the appearance color effect of the chenille yarn product. When designing the pattern of the segment-dyed cheese yarn, it is necessary to design the pattern of the segment-dyed yarn by absorbing various cultural and fashion elements based on the aesthetic needs of the product, the popular color, and the aesthetic orientation of consumers. For example, the pattern of the segment-dyed cheese yarn is designed as shown in Table 1.

[0164] Table 1

[0165] Number p of flower pattern colors Arrangement order of color segments <![CDATA[Length Y of each color segment i (cm)]]> <![CDATA[Flower pattern cycle length L2 (cm)]]> 3 abcb 20-20-20-20 80

[0166] 2. Design of hank yarn segment dyeing mode

[0167] The hank yarn segment dyeing mode is related to the pattern of the segment-dyed cheese yarn. Changes in parameters such as the number of colors in the pattern, the arrangement order of color segments, the length of each color segment, and the length of the pattern cycle will affect the segment dyeing mode of the hank yarn. Therefore, before designing the segment dyeing mode of the hank yarn, it is necessary to determine the pattern of the segment-dyed cheese yarn. According to the design of the segment-dyed cheese yarn pattern, obtain the relationship between the pattern cycle of the segment-dyed cheese yarn and the segment-dyed hank yarn pattern, the width of the hank yarn after straightening, the number of segments of the hank yarn, the color arrangement of each segment, and the corresponding length, and determine the segment dyeing mode of the hank yarn, as shown in Table 2.

[0168] Table 2

[0169]

[0170] 3. Design of color values for each segment

[0171] By accurately setting the color values of each segment, an ideal effect can be presented for the segment dyeing of the hank yarn, as shown in the color values of each segment Figure 7 shown.

[0172] 4. Design of segment-dyed hank yarn dyeing process

[0173] Select 16.7 tex / 288f specification polyester filament as the raw material. To ensure that the subsequent spun chenille yarn will not cause color mismatch between yarn segments due to the breakage of the decorative yarn, it is necessary to ply the polyester filaments. Ply 6 polyester filaments to 100 tex, and then dye them after forming into hanks, as Figure 8 shown. Add auxiliaries and disperse dyes at an initial temperature of 40 °C, and heat up to 130 °C at a heating rate of 2 °C / min. Determine the holding time according to the depth of the color to be dyed. The fixing time for light-colored yarn is about 20 min, while that for dark-colored yarn is about 50 min, so that the dye combines with the fiber at high temperature to achieve the purpose of fixing the color. After dyeing, quickly cool down to room temperature and rinse with normal-temperature clear water to wash off the floating color, so that the dye is firmly fixed in the fiber.

[0174] 5. Preparation of segment-dyed hank yarn based on hank yarn segment dyeing machine

[0175] AsFigure 9 The shown hank yarn piece-dyeing machine is evenly arranged in the width direction and can spray 1 to n1 kinds of dye liquors of different colors. According to the formula of the dye liquor of different colors, the required dyes, auxiliaries and water are put in, and under the action of a stirrer, they are evenly mixed in the chemical material cylinder 1 to obtain the dyeing solution. The feeding pump 3 outputs the dye liquor in the chemical material cylinder 1 to the corresponding color nozzles, and the dye liquor sprayed out from each color nozzle is evenly sprayed onto the hank yarn 7. Driven by the hank yarn conveyor belt 8, the hank yarn extrudes the excess dye liquor under the action of the rolling roller 9 and makes the dye liquor adsorbed on the yarn, and then through high-temperature steaming, the segmented dyeing of the hank yarn is realized.

[0176] The different distribution laws of the dye liquors of different colors sprayed by each nozzle along the width will cause the change of the pattern distribution law of the piece-dyed hank yarn, thus affecting the different pattern laws of the piece-colored cheese yarn and the piece-colored chenille yarn.

[0177] Execute step A designed by the present invention to construct a pattern model of the piece-dyed hank yarn, the piece-colored cheese yarn, and the piece-colored chenille yarn respectively corresponding to the single pattern cycle regarding the color segment color and length.

[0178] 6. Preparation of piece-dyed hank yarn and piece-colored cheese yarn

[0179] According to the parameters shown in Table 2, through the above-selected color segment color values and the designed dye liquor formula, after spray-dyeing the hank yarn in the color segment arrangement order of abcba and the segmented length of 10 - 20 - 20 - 20 - 10 cm, the piece-dyed hank yarn is obtained as Figure 10 shown. Then continue to wind the piece-dyed hank yarn into a piece-colored cheese yarn, as Figure 11 shown.

[0180] 7. Spinning and performance testing of piece-colored chenille yarn

[0181] Raw material selection: The core yarn selects 36.9 tex polyester, and the decorative yarn selects 100 tex piece-dyed polyester yarn.

[0182] Spinning process: The number of core yarns fed in is 4, and the number of decorative yarns fed in is 1. The spinning process of the chenille yarn is: the rotary head speed is 7000 r / min, the width of the spacer is 7.5 mm, the output speed of the core yarn is 6.8 m / min, the spindle speed is 3600 r / min, the designed twist is 530 twists / m, and the linear density is 1270 tex. According to this process, 8 kinds of piece-colored chenille yarns of different colors are spun.

[0183] Performance test: Referring to the industry quality assessment standard of FA / T 22003-2006 for woven chenille yarn, the basic intrinsic qualities of the spun segment-dyed chenille yarn, such as linear density deviation rate, coefficient of variation, coefficient of variation of twist, and average breaking strength, were evaluated. The tensile properties of the chenille yarn were tested using a YG021A-III electronic single yarn strength tester. The clamping distance was 250 mm, the tensile speed was 250 mm / min, the pre-tension was 1 N, and 10 groups were continuously tested and the average value was taken; the linear density of the chenille yarn was tested using a YG086C lea counter. The spindle speed of the yarn frame was 200 r / min, the set number of winding turns was 10 turns, 1 m per turn, the pre-tension was 150 cN, and 10 groups were continuously tested to obtain the linear density of the chenille yarn and the average value was taken, and its linear density deviation rate and coefficient of variation of linear density were calculated; the twist of the chenille yarn was tested using a Y331A type yarn twist tester. The untwisting and re-twisting method was used, the yarn twist direction was S twist, the clamping length was 250 mm, and 15 times were continuously tested to obtain the twist of the chenille yarn and the average value was taken, and the twist deviation rate and coefficient of variation of twist of the chenille yarn were calculated. The test results are shown in Table 3.

[0184] Table 3

[0185]

[0186] The test results show that the breaking strength of the spun chenille yarn is 5091.4 cN, the coefficient of variation of strength is 3.79%, the breaking elongation rate is 19.1%, the average linear density is 1346 tex, the linear density deviation rate is 5.98%, the coefficient of variation of linear density is 2.35%, the twist is 550.9 turns / m, the twist deviation rate is 3.94%, and the coefficient of variation of twist is 5.02%. All of them meet the relevant standards of first-class chenille yarn for weaving, verifying the feasibility and stability of the entire process.

[0187] The method for converting the pattern of segment-dyed chenille yarn based on the hank dyeing segment-dyeing process designed by the above technical solution is aimed at the process of obtaining segment-dyed chenille yarn from hank-dyed yarn through segment-dyed cheese yarn. Starting from the design of the pattern models corresponding to the single pattern cycle of hank-dyed yarn, segment-dyed cheese yarn, and segment-dyed chenille yarn respectively, a mutual conversion model of the pattern models between two yarns is constructed; and corresponding applications are designed. For the actual design and textile process of segment-dyed chenille yarn, the pattern is designed according to the hank-dyed yarn, and the accurate prediction of the corresponding segment-dyed chenille yarn pattern is realized, or according to the pattern of the segment-dyed chenille yarn, the pattern of the corresponding hank-dyed yarn is regressed, which can effectively improve the efficiency and accuracy of the design and textile of segment-dyed chenille yarn.

[0188] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A method for converting the pattern of segment-colored chenille yarn based on the segment-dyeing process of hank yarn, characterized in that: For the process of obtaining segment-dyed chenille yarn by processing segment-dyed hank yarn through segment-dyed cheese yarn, the following steps A to B are performed to construct a pattern conversion method; Step A. constructing pattern models corresponding to single pattern cycles with respect to color and length of color segments for segment-dyed hank yarn, segment-colored cheese yarn, and segment-colored chenille yarn, and then proceeding to step B; Step B. Based on the pattern models of segment-dyed skein, segment-color package yarn, and segment-color chenille yarn corresponding to single pattern cycles, a mutual conversion model between segment-dyed skein and segment-color package yarn regarding pattern models, a mutual conversion model between segment-color package yarn and segment-color chenille yarn regarding pattern models, and a mutual conversion model between segment-dyed skein and segment-color chenille yarn regarding pattern models are constructed.

2. The method for converting the pattern of segment-colored chenille yarn based on the skein segment dyeing process according to claim 1, characterized in that: In step A, the pattern model of the segment dyed skein corresponding to a single pattern period with respect to the color and length of the color segment is constructed as follows: Where n1 represents the number of color segments in the single pattern period corresponding to the segment-dyed skein, C(i) represents the color of the i-th color segment in the single pattern period corresponding to the segment-dyed skein, and h(i) represents the length of the i-th color segment in the single pattern period corresponding to the segment-dyed skein; The pattern model of color segment color and length corresponding to a single pattern period of segment-colored cheese yarn is constructed as follows: Among them, n2 represents the number of color segments in the corresponding single pattern cycle of the segment color package yarn, Indicates the color of the jth color segment in the single pattern cycle of the segment-colored cheese yarn. It represents the length of the jth color segment in the single pattern period of the segment color cheese yarn; The pattern model of segment color chenille yarn corresponding to a single pattern cycle regarding the color segment color and length is constructed as follows: Among them, n3 represents the number of color segments in the single pattern cycle of the segment color chenille yarn. Indicates the color of the kth color segment in the single pattern cycle of the segment color chenille yarn. It represents the length of the kth color segment in the single pattern period of the segment color chenille yarn.

3. The method for converting the pattern of segment-colored chenille yarn based on the hank-segment dyeing process according to claim 2, characterized in that: In the step B, based on the pattern models of the segment-dyed skein and the segment-color cheese yarn corresponding to the single pattern period, a mutual conversion model between the segment-dyed skein and the segment-color cheese yarn about the pattern model is constructed as follows: Based on n2=2n1-2, according to the color C(i) and length h(i) of each color segment in the single pattern period of the segment-dyed hank yarn, the color of each color segment in the single pattern period of the segment-dyed cheese yarn is constructed. With length as follows: According to the pattern model of the segment-dyed hank corresponding to a single pattern period, the pattern model of the segment-dyed cheese corresponding to a single pattern period is obtained as follows: Based on n1=n2 / 2+1, the color of each color segment in the single pattern cycle is corresponding to the color of the segment color package yarn With length The color C(i) and length h(i) of each color segment in the single pattern period of the segment-dyed skein are constructed as follows: According to the pattern model of the segment-dyed cheese yarn corresponding to a single pattern period, the pattern model of the segment-dyed hank yarn corresponding to a single pattern period is obtained as follows:

4. The method for converting the pattern of segment-colored chenille yarn based on the skein segment dyeing process according to claim 2, characterized in that: In the step B, based on the pattern models of the segment color cheese yarn and the segment color chenille yarn corresponding to the single pattern period, a mutual conversion model between the segment color cheese yarn and the segment color chenille yarn about the pattern model is constructed as follows: In the spinning process of segment color chenille yarn, segment color cheese yarn is wound on the gauge as decorative yarn, and is cut by a blade and output to both sides. According to the width of the gauge H and the thickness of the gauge T, the length of each decorative yarn in the segment color chenille yarn is obtained as d=2×(H+T); Based on n3=n2, the color of each color segment in the single pattern cycle corresponding to the segment color package yarn With length Construct the color of each color segment in the single pattern cycle corresponding to the segment color chenille yarn With length as follows: According to the pattern model of the segment color cheese yarn corresponding to the single pattern period, the pattern model of the segment color chenille yarn corresponding to the single pattern period is obtained as follows: Based on n2=n3, the color of each color segment in the single pattern cycle corresponding to the segment color chenille yarn With length Construct the color of each color segment in the single pattern cycle corresponding to the color of the segment color package With length as follows: According to the pattern model of the segment color chenille yarn corresponding to the single pattern period, the pattern model of the segment color cheese yarn corresponding to the single pattern period is obtained as follows:

5. The method for converting the pattern of segment-colored chenille yarn based on the skein segment dyeing process according to claim 2, characterized in that: In the step B, based on the pattern models of the segment-dyed skein and the segment-color chenille yarn corresponding to the single pattern period, a mutual conversion model between the segment-dyed skein and the segment-color chenille yarn about the pattern model is constructed as follows: In the spinning process of segment color chenille yarn, segment color cheese yarn is wound on the gauge as decorative yarn, and is cut by a blade and output to both sides. According to the width of the gauge H and the thickness of the gauge T, the length of each decorative yarn in the segment color chenille yarn is obtained as d=2×(H+T); Based on n3=2n1-2, according to the color C(i) and length h(i) of each color segment in the single pattern period of the segment-dyed skein, the color of each color segment of the segment-dyed chenille yarn corresponding to the single pattern period is constructed. With length as follows: According to the pattern model of the segment-dyed skein corresponding to a single pattern period, the pattern model of the segment-dyed chenille yarn corresponding to a single pattern period is obtained as follows: Based on n1=n3 / 2+1, the color of each color segment in the single pattern cycle corresponding to the segment color chenille yarn With length The color C(i) and length h(i) of each color segment in the single pattern period of the segment-dyed skein are constructed as follows: According to the pattern model of the segment-dyed chenille yarn corresponding to a single pattern period, the pattern model of the segment-dyed skein yarn corresponding to a single pattern period is obtained as follows:

6. Application of the method for converting the pattern of segment-colored chenille yarn based on the skein segment dyeing process according to claim 2, characterized in that: The method comprises executing the following steps C1 to C3 according to the pattern of the target segment-dyed skein yarn to construct the pattern of the corresponding target segment-dyed chenille yarn; Step C1. According to the color C(i) and length h(i) of each color segment in the single pattern period corresponding to the target segment-dyed skein pattern, and the number of color segments in the single pattern period of the target segment-dyed skein n1, 1≤i≤n1, n2=2n1-2, 1≤j≤n2, execute the following formula: Get the color of each color segment in the single pattern cycle of the corresponding target segment colored cheese yarn With length and the number n2 of color segments in the single pattern cycle of the corresponding target segment colored cheese yarn, and then enter step C2; Step C2. Based on the spinning process of the segment color chenille yarn, the segment color cheese yarn is wound on the gauge as the decorative yarn, and is cut by the blade and output to both sides. According to the width of the gauge H and the thickness of the gauge T, the length of each decorative yarn in the corresponding target segment color chenille yarn is obtained as d=2×(H+T), and then the process proceeds to step C3; Step C3: According to the color of each color segment in the single pattern cycle corresponding to the color package pattern of the corresponding target segment With length And the number of color segments n2 in the single pattern cycle of the corresponding target segment colored cheese yarn, according to n3 = n2, 1 ≤ k ≤ n3, execute the following formula: Get the color of each color segment in the single pattern cycle corresponding to the target segment color chenille yarn With length And the number n3 of color segments in the single pattern cycle of the corresponding target segment color chenille yarn.

7. The application of the method for converting the pattern of segment-colored chenille yarn based on the skein segment dyeing process according to claim 6, characterized in that: According to the pattern of the target segment-dyed skein, the following operations are performed to construct the pattern of the corresponding target segment-dyed chenille yarn; first, based on the spinning process of the segment-dyed chenille yarn, the segment-dyed bobbin yarn is wound on the gauge as the decorative yarn, and is cut by the blade and output to both sides. According to the width of the gauge H and the thickness of the gauge T, the length of each decorative yarn in the corresponding target segment-dyed chenille yarn is obtained as d=2×(H+T); Then, according to the color C(i) and length h(i) of each color segment in the single pattern period corresponding to the target segment-dyed skein pattern, and the number of color segments in the single pattern period of the target segment-dyed skein n1, 1≤i≤n1, n3=2n1-2, 1≤k≤n3, the following formula is executed: Get the color of each color segment in the single pattern cycle corresponding to the target segment color chenille yarn With length And the number n3 of color segments in the single pattern cycle of the corresponding target segment color chenille yarn.

8. The application of the method for converting the pattern of segment-colored chenille yarn based on the hank-segment dyeing process according to claim 6, characterized in that: It also includes executing the following steps D1 to D3 according to the pattern of the target segment-dyed chenille yarn to construct the pattern of the corresponding target segment-dyed skein yarn; Step D1. Based on the segment color chenille yarn spinning process, the segment color cheese yarn is wound on the gauge as the decorative yarn, and is cut by the blade and output to both sides. According to the gauge width H and the gauge thickness T, the length d=2×(H+T) of each decorative yarn in the target segment color chenille yarn is obtained, and then the process proceeds to step D2; Step D2. According to the target segment color chenille yarn pattern, the color of each color segment in the single pattern cycle is calculated. With length And the number of color segments in the single pattern cycle of the target segment color chenille yarn pattern n3, 1≤k≤n3, according to n2=n3, 1≤j≤n2, execute the following formula: Get the color of each color segment in the single pattern cycle of the corresponding target segment colored cheese yarn With length and the number n2 of color segments in the single pattern cycle of the corresponding target segment colored cheese yarn, and then enter step D3; Step D3: According to the color of each color segment in the single pattern cycle corresponding to the corresponding target segment color package yarn With length And the number of color segments n2 in the single pattern cycle of the corresponding target segment colored cheese yarn, according to n1 = n2 / 2 + 1, 1 ≤ i ≤ n1, execute the following formula: The color C(i) and length h(i) of each color segment in the single pattern period of the corresponding target segment-dyed skein yarn and the number n1 of color segments in the single pattern period of the corresponding target segment-dyed skein yarn are obtained.

9. Application of the method for converting segment color chenille yarn pattern based on skein segment dyeing process according to claim 8, characterized in that: According to the pattern of the target segment-dyed chenille yarn, the following operations are performed to construct the pattern of the corresponding target segment-dyed skein yarn; firstly, based on the spinning process of the segment-dyed chenille yarn, the segment-dyed bobbin yarn is wound on the gauge as the decorative yarn, and is cut by the blade and output to both sides. According to the width of the gauge H and the thickness of the gauge T, the length of each decorative yarn in the target segment-dyed chenille yarn is obtained as d=2×(H+T); Then, according to the target segment color chenille yarn pattern, the color of each color segment in the single pattern cycle is matched. With length And the number of color segments in the single pattern cycle of the target segment color chenille yarn pattern n3, 1≤k≤n3, according to n1=n3 / 2+1, 1≤i≤n1, execute the following formula: The color C(i) and length h(i) of each color segment in the single pattern period of the corresponding target segment-dyed skein yarn and the number n1 of color segments in the single pattern period of the corresponding target segment-dyed skein yarn are obtained.

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