CN110485018A - A kind of spinning for the discrete ramp chromatography and gradual change dyed yarn that four primary fiber coupling mixture constructs - Google Patents

Abstract

The present invention relates to a kind of discrete ramp chromatography of four primary fiber coupling mixture building and the spinnings of gradual change dyed yarn, using four primary fiber quality as carrier, the mass-sequential that building is incremented by and successively decreases, and pairing is combined as four primary fiber quality coupling mixture and gradient mixture model, discrete ramp chromatography according to model construction four primary fiber, and the draw ratio discrete logarithm of spinning color discrete ramp colorful yarn, and the discrete ramp effect of Yarn color is realized based on coupling mixture thus to obtain four primary, for spinning the yarn with color seriation feature of color discrete ramp, or spin the gradient color yarn on an one thread with color nature fade effect.Hereby based on the coupling mass ratio between four primary fiber, it can efficiently realize the secondary colour matching between polynary primary colours fiber, and the seriation color and discrete ramp color of the discrete ramp in panchromatic domain space are obtained, and then accurately realize the acquisition of the colorful yarn of each color discrete ramp corresponding to four kinds of color fibers.

Description

A Discrete Gradient Color Spectrum Constructed by Coupling and Mixing of Four Primary Color Fibers and Gradient Color Yarn spinning

technical field

The invention relates to a discrete gradient color spectrum constructed by coupling and mixing of fibers of four primary colors and the spinning of gradient color yarn, which belongs to the technical field of digital color-color spinning and color spinning.

Background technique

The color of textile and apparel products is affected by fashion trends, and has the characteristics of short cycle, fast change, and significant fashion effect. Textile enterprises must be able to quickly modulate and spin serialized colors of fibers, yarns, fabrics and clothing with discrete gradients in hue, lightness, and saturation, so as to respond to rapid and changing market demands with agile manufacturing and rapid response.

Color spinning enterprises usually mix at least two or more fibers of different colors in the process of cotton blending, parquet, cotton picking, cotton opening and cleaning, drawing, roving, and spun yarn, so as to obtain discrete gradients such as hue, lightness, and saturation. Serialized colors, or gradient colors that achieve discrete gradients such as hue, lightness, and saturation on yarns, fabrics, and apparel products.

In theory, according to the theory of color science, the transition from one color gradient to another through the gradient of hue, lightness, and saturation needs to be realized through the coupled gradient of RGB values of multiple primary colors. The model and algorithm of the color gradient realized by the coupling gradient of the primary color RGB value; according to the textile processing theory, the color spinning realizes the color spinning from one color to Gradient transitions to another color, so it is necessary to establish a model and algorithm to realize the color gradient of color spinning and textiles by coupling the weight mixing ratio of multi-elementary color fibers; according to the digital spinning processing theory, by adjusting the multi-element color fiber mixing ratio, it is necessary The gradient of the draft ratio of channel digital spinning corresponds to the coupling gradient of the weight mixing ratio of multi-element primary color fibers, so as to realize the transition from one color gradient to another in color spinning. Therefore, it is necessary to establish a multi-channel coupling draft gradient and multiple Models and algorithms for coupled gradients of base color fiber weight mixing ratios.

How to achieve color gradients through coupled gradients of multiple primary color RGB values? And how to realize the color gradient of color spinning through the coupled gradient of multi-element color fiber weight mixing ratio? How to realize the coupling gradient of multi-color fiber mixing ratio through multi-channel asynchronous drafting Ouhe gradient, and further realize the coupled gradient of color spinning color? Furthermore, there is still a lack of effective theories and methods on how to design the coupled gradients of RGB values of multiple primary colors, the coupled gradients of fiber mixing ratios of multiple primary colors, and the coupled gradients of draft ratios.

Using the traditional color matching method, different color fiber raw materials are mixed in the pre-spinning processes such as cotton blending, mosaic, baling, opening and cleaning, drawing, roving, and spun yarn. On the one hand, the traditional color matching method cannot accurately control different color fibers. The mixing ratio of different colors cannot be achieved in any proportion; on the other hand, the traditional color matching method can only change the blending ratio off-line (Off-line), and cannot change the mixing ratio of different colored fibers on-line (On-line). Therefore, it is impossible to realize the gradual change of color by the mixing of two kinds of colored fibers with the traditional method.

According to the method provided by the invention patent "CN201510142129.0 Based on CMYK four-color roving coupling drafting method and device for mixed color spinning yarn", although the online change of the blending ratio can be adjusted, how to adjust the change of the draft ratio of the four channels to achieve Coupling Gradient of Fiber Weight Mixing Ratio of Multiple Primary Colors? And how to realize the coupled gradient of color spinning RGB value through the coupled gradient of multi-element color fiber weight mixing ratio? Further, how to realize the gradient of the color of the dyed yarn through the coupling gradient of the RGB value of the dyed yarn? No solution was given.

Contents of the invention

The technical problem to be solved by the present invention is to provide a discrete gradient chromatogram constructed by coupling and mixing of four-primary-color fibers and the spinning of gradient-colored yarns. The discrete gradient of color can be realized through the coupling and mixing of four-primary-color fibers to obtain discrete gradient chromatograms of four primary colors. Based on this, the discrete change law of the blending ratio is solved, and then based on the discrete change law of the draft ratio, the discrete change law of the draft ratio is solved, and then the color yarns with discrete and gradual changes of each color corresponding to the four primary color fibers are accurately realized.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: The present invention designs a discrete gradient color spectrum constructed by coupling and mixing of four-color fibers and the spinning of gradient-colored yarns, which are used to obtain four-color fibers for four-color fibers Between, based on the coupling fiber corresponding to the coupling fiber chromatogram under different coupling mass ratio combinations, the following steps are included:

Step A. For the coupling mass ratio of the first color fiber α, according to the preset number of decrements n, decrease in equal proportions from 100% to 0%, and obtain the coupling mass ratio of the α color fiber under each descending sequence number, and The general formula for obtaining the coupling mass ratio corresponding to the descending sequence number of the α-color fiber is as follows:

m _α *(n-i+1)/n

For the coupling mass ratio of the second color fiber β, according to the preset increment number n, increase in equal proportion from 0% to 100% in turn, and obtain the coupling mass ratios corresponding to the β color fibers under each increment sequence number, and obtain The general formula of the coupling mass ratio of the β-color fiber corresponding to the descending order number is as follows:

m _β *(i-1)/n

For the coupling mass ratio of the third color fiber γ, according to the preset increment times n, increase in equal proportion from 0% to 100% in turn, obtain the coupling mass ratio corresponding to the γ color fiber under each increment sequence number, and obtain The general formula of the coupling mass ratio of the γ-color fiber corresponding to the descending order number is as follows:

m _γ *(i-1)/n

For the coupling mass ratio of the fourth color fiber δ, according to the preset increment times n, increase in equal proportion from 0% to 100% in turn, and obtain the coupling mass ratios corresponding to the δ color fibers under each increment sequence number, and obtain The general formula of the coupling mass ratio corresponding to the descending order number of the δ color fiber is as follows:

m _δ *(i-1)/n

Among them, the preset decreasing times are equal to the preset increasing times, i=1, 2, ..., n, n+1, m _α represents the quality of α color fiber, m _β represents the quality of β color fiber, m _γ represents γ color fiber The quality of , m _δ represents the quality of δ color fiber, then enter step B;

Step B. Obtain the combinations of the four color fibers α, β, γ, and δ according to their corresponding coupling mass ratios under different combinations of coupling sequence numbers, that is, the coupling formulas of the coupled fibers under each combination of coupling sequence numbers, and further obtain the coupling The general formula of the coupling quality of the fiber corresponding to the coupling sequence number combination is as follows:

Then enter step C; wherein, T _{i, j, k} represents the coupling quality general formula of coupling fiber corresponding coupling order number combination i, j, k, j=1, 2, ..., n, n+1, k=1, 2, ..., n, n+1, and (i+j)≤(n+2), (i+k)≤(n+2), (j+k)≤(n+2);

Step C. According to the coupling general formula of coupling fiber corresponding coupling sequence number combination, obtain four kinds of color fibers and respectively correspond to the mixing ratio general formula of coupling sequence number combination as follows:

Then enter step D; where: K _αi,j,k represents the coupling mass mixing ratio formula of α-color fibers corresponding to the coupling sequence number combination i,j,k, K _βi,j,k represents the coupling sequence number combination of β-color fibers The general formula of the coupling mass mixing ratio of i, j, k, K _{γi, j, k} represents the coupling mass mixing ratio formula of the γ color fiber corresponding to the coupling sequence number combination i, j, k, K _{δi, j, k} represents the delta color The general formula of the coupling mass mixing ratio of the fiber corresponding to the coupling sequence number combination i, j, k;

Step D. According to the coupling mass mixing ratio general formulas of the four color fibers respectively corresponding to the combination of coupling sequence numbers, for the RGB colors of the four color fibers, obtain the RGB general formula of the coupling fiber corresponding to the combination of coupling sequence numbers, and then obtain the coupling fibers respectively corresponding to The colors of different coupling sequence number combinations, that is, the obtained coupling fibers correspond to the colors of different coupling mass ratio combinations among the various color fibers. The general formula of the coupling fiber chromatogram of the four color fibers based on different coupling mass ratio combinations is as follows:

R _Ti,j,k ＝K _αi,j,k *R _α +K _βi,j,k *R _β +K _γi,j,k *R _γ +K _δi,j,k *R _δ

G _Ti,j,k ＝K _αi,j,k *G _α +K _βi,j,k *G _β +K _γi,j,k *G _γ +K _δi,j,k *G _δ

B _Ti ,j, _k ＝K _αi ,j, _k *B _α +K _βi ,j, _k *B _β +K _γi ,j, _k *B _γ +K _δi ,j, _k *B _δ

Then obtain the four-color fiber discrete gradient chromatogram, and then enter step E; wherein, R _Ti ,j _,k , G _Ti ,j _,k , B _Ti ,j _,k are the chromatograms of the coupled fiber samples, R _α , G _α , B _α is the color tristimulus value of color fiber α, R _β , G _β , B _β are the color tristimulus value of color fiber β, R _γ , G _γ , B _γ are the color tristimulus value of color fiber γ, R _δ , G _δ , B _δ are the color tristimulus values of colored fiber δ;

Step E. Obtain the densities ρ _α , ρ _β , ρ _γ , ρ _δ , and then enter step F;

Step F. According to the blending ratio general formula corresponding to the combination of the four color fibers respectively corresponding to the coupling sequence numbers, combined with the linear densities _ρα , _ρβ , _ργ , _ρδ of the color fiber roving corresponding to the four color fibers respectively, according to the following formula:

E _αi,j,k = K _αi,j,k *ρ _yi,j,k /ρ _α

E _βi,j,k ＝K _βi,j,k *ρ _yi,j,k /ρ _β

E _γi,j,k ＝K _γi,j,k *ρ _yi,j,k /ρ _γ

E _δi,j,k ＝K _δi,j,k *ρ _yi,j,k /ρ _δ

Obtain the draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colored fiber rovings respectively, then based on the draft ratio E _{αi ,j,k} , E _βi,j,k , E _γi,j,k , E _δi,j,k , after asynchronous drafting and converging twisting of four colored fiber rovings, the chromatogram corresponding to the coupled fiber chromatogram is obtained Coupling yarn, where ρ _{yi, j, k} represents the yarn obtained after asynchronous drafting, converging and twisting for the four color fibers α, β, γ, δ, corresponding to the coupling sequence number combination i, j, k preset line density.

As a preferred technical solution of the present invention: it also includes step G as follows, after step F is executed, enter step G;

Step G. According to the draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colored fiber rovings, and the four color The linear densities ρ _α , ρ _β , ρ _γ , and ρ _δ corresponding to the fiber rovings are as follows:

ρ' _yi,j,k = ρ _α /E _αi,j,k + ρ _β /E _βi,j,k + ρ _γ /E _γi,j,k + ρ _δ /E _δi,j,k

Obtain the actual linear density ρ' _{yi,j,k of the yarn obtained after asynchronous drafting, converging and twisting for the four colored fiber rovings corresponding to the coupling sequence number combination i,j,k} .

As a preferred technical solution of the present invention: in the step G, it also includes the following:

The four rovings prepared from the four-color fibers are asynchronously drawn to realize coupling mixing, and then merged and twisted to form four-color mixed-color yarns. According to the coupling general formula of the coupling sequence number combination corresponding to the coupling fibers, the following formula is used:

K _yαi,j,k ＝(ρ _α /E _αi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

K _yβi,j,k ＝(ρ _β /E _βi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

K _yγi,j,k ＝(ρ _γ /E _γi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

K _yδi,j,k =(ρ _δ /E _δi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

Obtain the general formula K _yαi,j,k , K _yβi,j,k , K _yγi,j,k , K _yδi,j,k of the four color fibers in the yarn respectively corresponding to the combination of the coupling sequence number; among them, K _yαi,j,k represents the blending ratio formula of the α color fiber corresponding to the coupling sequence number combination i,j,k in the yarn, K _yβi,j,k represents the blending of the β color fiber corresponding to the coupling sequence number combination i,j,k General formula, K _{yγi, j, k} represents the blending ratio formula of γ color fibers corresponding to the coupling sequence number combination i, j, k, K _{yδi, j, k} represents the δ color fiber corresponding to the coupling sequence number combination i, j, k The blend ratio of general formula.

As a preferred technical solution of the present invention: it also includes step H as follows, after step G is executed, enter step H;

Step H. According to the blending ratio general formula corresponding to the coupling sequence number combination of the four color fibers respectively, for the RGB colors of the four color fibers, the RGB general formula corresponding to the coupling sequence number combination of the coupling fiber is obtained as follows:

R _yi,j,k ＝K _yαi,j, k *R _yα +K yβi,j, _k *R _yβ +K _yγi,j,k *R _yγ +K _δγi,j,k *R _yδ

G _yi,j,k =K _yαi,j, k *G _yα +K yβi,j, _k *G _yβ +K _yγi,j,k *G _yγ +K _yδi,j,k *G _yδ

B _yi,j,k =K _yαi,j, k *B _yα +K yβi,j, _k *B _yβ +K _yγi,j,k *B _yγ +K _yδi,j,k *B _yδ

Among them, R _yα , G _yα , B _yα represent the color tristimulus value of the yarn with linear density ρ' _yi,j,k spun from α-color fiber; R _yβ , G _yβ , _{By yβ} represent The color tristimulus value of the yarn with linear density ρ' _yi,j,k spun, R _yγ , G _yγ , B _yγ represent the yarn with linear density ρ' _yi,j,k spun from γ-color fiber The color tristimulus value of the line.

According to the invention, the discrete gradient color spectrum constructed by coupling and mixing of four-color fibers and the spinning of gradient colored yarns, compared with the prior art by adopting the above technical scheme, has the following technical effects:

The present invention designs a discrete gradient chromatogram constructed by coupling and mixing of four-primary-color fibers and spinning of gradient-colored yarns, using the quality of the four-primary-color fibers as a carrier to construct an increasing and decreasing mass sequence, and pair them together as four-primary-color fibers The mass coupling mixing and gradient mixing model, based on this model, the discrete gradient color spectrum of the four-primary color fiber and the discrete algorithm of the draft ratio for spinning the color discrete gradient color yarn are constructed, and the realization of the four-primary color based on coupling mixing is obtained. The discrete gradation effect of yarn color is used for spinning yarns with color serialization characteristics of discrete gradation of color, or spinning gradient color yarns with natural color gradation effect on one yarn. Therefore, based on the coupling mass ratio between the fibers of the four primary colors, the secondary color matching among the fibers of the multiple primary colors can be efficiently realized, and serialized colors and discrete gradient colors of discrete gradients in the full color gamut space can be obtained, thereby accurately realizing the four primary colors. Obtaining colored yarns with discrete gradients of colors corresponding to fibers of different colors.

Description of drawings

Fig. 1 is a schematic flow chart of the invention to design the discrete gradient color spectrum and the spinning of the gradient color yarn constructed by coupling and mixing of four primary color fibers.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

The present invention designs a discrete gradient chromatogram constructed by coupling and mixing of fibers of four primary colors and the spinning of gradient colored yarns, which is used to obtain fibers of four colors, based on the combination of different coupling mass ratios, coupling between fibers of four colors The coupling fiber corresponding to the fiber chromatogram, as shown in Figure 1, specifically includes the following steps.

Step A. For the coupling mass ratio of the first color fiber α, according to the preset number of decrements n, decrease in equal proportions from 100% to 0%, and obtain the coupling mass ratio of the α color fiber under each descending sequence number, and The general formula for obtaining the coupling mass ratio corresponding to the descending sequence number of the α-color fiber is as follows:

m _α *(n-i+1)/n

For the coupling mass ratio of the second color fiber β, according to the preset increment number n, increase in equal proportion from 0% to 100% in turn, and obtain the coupling mass ratios corresponding to the β color fibers under each increment sequence number, and obtain The general formula for the coupling mass ratio of the β-color fiber corresponding to the descending order number is as follows:

m _β *(i-1)/n

For the coupling mass ratio of the third color fiber γ, according to the preset increment times n, increase in equal proportion from 0% to 100% in turn, obtain the coupling mass ratio corresponding to the γ color fiber under each increment sequence number, and obtain The general formula of the coupling mass ratio of the γ-color fiber corresponding to the descending order number is as follows:

m _γ *(i-1)/n

For the coupling mass ratio of the fourth color fiber δ, according to the preset increment times n, increase in equal proportion from 0% to 100% in turn, and obtain the coupling mass ratios corresponding to the δ color fibers under each increment sequence number, and obtain The general formula of the coupling mass ratio corresponding to the descending order number of the δ color fiber is as follows:

m _δ *(i-1)/n

Among them, the preset decreasing times are equal to the preset increasing times, i=1, 2, ..., n, n+1, m _α represents the quality of α color fiber, m _β represents the quality of β color fiber, m _γ represents γ color fiber The quality of , m _δ represents the quality of δ color fibers, and then enter step B.

Step B. Obtain the combinations of the four color fibers α, β, γ, and δ according to their corresponding coupling mass ratios under different combinations of coupling sequence numbers, that is, the coupling formulas of the coupled fibers under each combination of coupling sequence numbers, and further obtain the coupling The general formula of the coupling quality of the fiber corresponding to the coupling sequence number combination is as follows:

Then enter step C; wherein, T _{i, j, k} represents the coupling quality general formula of coupling fiber corresponding coupling order number combination i, j, k, j=1, 2, ..., n, n+1, k=1, 2, ..., n, n+1, and (i+j)≤(n+2), (i+k)≤(n+2), (j+k)≤(n+2).

In practical applications, the coupling of coupling fibers corresponding to the combinations of coupling sequence numbers is shown in Table 1 below.

Table 1

Step C. According to the coupling general formula of coupling fiber corresponding coupling sequence number combination, obtain four kinds of color fibers and respectively correspond to the mixing ratio general formula of coupling sequence number combination as follows:

Then enter step D; where: K _αi,j,k represents the coupling mass mixing ratio formula of α-color fibers corresponding to the coupling sequence number combination i,j,k, K _βi,j,k represents the coupling sequence number combination of β-color fibers The general formula of the coupling mass mixing ratio of i, j, k, K _{γi, j, k} represents the coupling mass mixing ratio formula of the γ color fiber corresponding to the coupling sequence number combination i, j, k, K _{δi, j, k} represents the delta color The general formula of the coupling mass mixing ratio of the fiber corresponding to the coupling sequence number combination i, j, k is shown in Table 2.

Table 2

Step D. According to the coupling mass mixing ratio general formulas of the four color fibers respectively corresponding to the combination of coupling sequence numbers, for the RGB colors of the four color fibers, obtain the RGB general formula of the coupling fiber corresponding to the combination of coupling sequence numbers, and then obtain the coupling fibers respectively corresponding to The colors of different coupling sequence number combinations, that is, the obtained coupling fibers correspond to the colors of different coupling mass ratio combinations among the various color fibers. The general formula of the coupling fiber chromatogram of the four color fibers based on different coupling mass ratio combinations is as follows:

R _Ti,j,k ＝K _αi,j,k *R _α +K _βi,j,k *R _β +K _γi,j,k *R _γ +K _δi,j,k *R _δ

G _Ti,j,k ＝K _αi,j,k *G _α +K _βi,j,k *G _β +K _γi,j,k *G _γ +K _δi,j,k *G _δ

B _Ti,j,k ＝K _αi,j,k *B _α +K _βi,j,k *B _β +K _γi,j,k *B _γ +K _δi,j,k *B _δ

Then obtain the four-color fiber discrete gradient chromatogram, as shown in Table 3 below, and then enter step E; wherein, R _Ti,j,k , G _Ti,j,k , B _Ti,j,k are the chromatograms of the coupled fiber samples , R _α , G _α , B _α are the color tristimulus values of colored fiber α, R _β , G _β , B _β are the color tristimulus values of colored fiber β, R _γ , G _γ , B _γ are the color tristimulus values of colored fiber γ Color tristimulus value, R _δ , G _δ , B _δ are the color tristimulus value of color fiber δ.

table 3

Step E. Obtain the densities ρ _α , ρ _β , ρ _γ , ρ _δ , and then enter step F.

Step F. According to the blending ratio general formula corresponding to the combination of the four color fibers respectively corresponding to the coupling sequence numbers, combined with the linear densities _ρα , _ρβ , _ργ , _ρδ of the color fiber roving corresponding to the four color fibers respectively, according to the following formula:

E _αi,j,k = K _αi,j,k *ρ _yi,j,k /ρ _α

E _βi,j,k ＝K _βi,j,k *ρ _yi,j,k /ρ _β

E _γi,j,k ＝K _γi,j,k *ρ _yi,j,k /ρ _γ

E _δi,j,k ＝K _δi,j,k *ρ _yi,j,k /ρ _δ

The draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colored fiber rovings are obtained, as shown in Table 4 below.

Table 4

Then the blending ratio of the four primary color fibers in the yarn is shown in Table 5 below.

table 5

Then, based on the draft ratio E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k , after asynchronous drafting and converging twisting of the four colored fiber rovings, the obtained The chromatographically coupled yarn corresponding to the coupled fiber chromatogram, and then enter step G; wherein, ρ _{yi, j, k} represent four color fibers α, β, γ, δ, corresponding to the coupling sequence number combination i, j, k Preset linear density of the yarn obtained after asynchronous drafting, converging and twisting.

Step G. According to the draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colored fiber rovings, and the four color The linear densities ρ _α , ρ _β , ρ _γ , and ρ _δ corresponding to the fiber rovings are as follows:

ρ' _yi,j,k = ρ _α /E _αi,j,k + ρ _β /E _βi,j,k + ρ _γ /E _γi,j,k + ρ _δ /E _δi,j,k

Obtain the actual linear density ρ' _{yi,j,k of the yarn obtained after asynchronous drafting, converging and twisting for the four colored fiber rovings corresponding to the coupling sequence number combination i,j,k} .

Then, the four rovings prepared by the four-color fibers are asynchronously drawn to realize coupling mixing, and then merged and twisted to form four-color mixed-color yarns. According to the coupling general formula of the coupling sequence number combination corresponding to the coupling fibers, the following formula is used:

K _yαi,j,k ＝(ρ _α /E _αi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

K _yβi,j,k ＝(ρ _β /E _βi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

K _yγi,j,k ＝(ρ _γ /E _γi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

K _yδi,j,k =(ρ _δ /E _δi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk )

Obtain the general formula K _yαi,j,k , K _yβi,j,k , K _yγi,j,k , K _yδi,j,k of the four color fibers in the yarn respectively corresponding to the combination of the coupling sequence number; among them, K _yαi,j,k represents the blending ratio formula of the α color fiber corresponding to the coupling sequence number combination i,j,k in the yarn, K _yβi,j,k represents the blending of the β color fiber corresponding to the coupling sequence number combination i,j,k General formula, K _{yγi, j, k} represents the blending ratio formula of γ color fibers corresponding to the coupling sequence number combination i, j, k, K _{yδi, j, k} represents the δ color fiber corresponding to the coupling sequence number combination i, j, k The blend ratio of general formula.

Step H. According to the blending ratio general formula corresponding to the coupling sequence number combination of the four color fibers respectively, for the RGB colors of the four color fibers, the RGB general formula corresponding to the coupling sequence number combination of the coupling fiber is obtained as follows:

R _yi,j,k ＝K _yαi,j, k *R _yα +K yβi,j, _k *R _yβ +K _yγi,j,k *R _yγ +K _δγi,j,k *R _yδ

G _yi,j,k =K _yαi,j, k *G _yα +K yβi,j, _k *G _yβ +K _yγi,j,k *G _yγ +K _yδi,j,k *G _yδ

B _yi,j,k =K _yαi,j, k *B _yα +K yβi,j, _k *B _yβ +K _yγi,j,k *B _yγ +K _yδi,j,k *B _yδ

Among them, R _yα , G _yα , B _yα represent the color tristimulus value of the yarn with linear density ρ' _yi,j,k spun from α-color fiber; R _yβ , G _yβ , _{By yβ} represent The color tristimulus value of the yarn with linear density ρ' _yi,j,k spun, R _yγ , G _yγ , B _yγ represent the yarn with linear density ρ' _yi,j,k spun from γ-color fiber The tristimulus values for the color of the lines are listed in Table 6 below.

Table 6

The discrete gradient chromatogram constructed by the coupling and mixing of four-primary-color fibers designed by the above-mentioned technical scheme and the spinning of gradient-colored yarns are applied in practice. In Example 1, if n=10, a discrete gradient of four-primary-color fibers with a gradient of 10% is obtained. Chromatography, as shown in Table 7 below.

Table 7

Based on Table 2, the draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colors of fibers are shown in the following table 8.

Table 8

The measured color value of the yarn spun from colored roving ρ _mα is mα(R _ymα , G _ymα , B _ymα ), and the measured color value of the yarn spun from colored roving ρ _β is (R _y , G _y , B _y ), the color value of the yarn spun from colored roving ρ _γ is measured as (R _y , G _y , B _y ), the yarn spun from colored roving ρ _δ The measured color value is mα(R _yδ , G _yδ , B _yδ ), and the color value of each segment of the digitally spun digitally spun yarn with a gradient of 10% is calculated by the following formula. The obtained values are listed in Table 9, and the calculation method of the gradient yarn with a gradual gradient of 10% is obtained.

R _yi,j,k ＝K _yαi,j, k *R _yα +K yβi,j, _k *R _yβ +K _yγi,j,k *R _yγ +K _δγi,j,k *R _yδ

G _yi,j,k =K _yαi,j, k *G _yα +K yβi,j, _k *G _yβ +K _yγi,j,k *G _yγ +K _yδi,j,k *G _yδ

B _yi,j,k =K _yαi,j, k *B _yα +K yβi,j, _k *B _yβ +K _yγi,j,k *B _yγ +K _yδi,j,k *B _yδ

Table 9

The above technical scheme designs a discrete gradient chromatogram constructed by coupling and mixing of four-primary-color fibers and the spinning of gradient-colored yarns. The quality of the four-primary-color fibers is used as a carrier to construct an increasing and decreasing mass sequence, and the combination and pairing of the four-primary-color Based on the fiber quality coupled mixing and gradient mixing model, the discrete gradient color spectrum of the four-primary color fiber and the discrete algorithm of the draft ratio for spinning color discrete gradient color yarns are constructed based on this model, and the four-primary color based coupling mixing Realize the discrete gradation effect of yarn color, used for spinning yarn with color serialization characteristics of discrete gradation of color, or spinning gradient color yarn with natural color gradation effect on one yarn. Therefore, based on the coupling mass ratio between the four primary color fibers, the secondary color matching between the multi-primary color fibers can be efficiently realized, and the serialized color and discrete gradient color in the full color gamut space can be obtained, and then the four primary color colors can be accurately realized. Obtaining colored yarns with discrete gradients of colors corresponding to fibers of different colors.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. Variations.

Claims (4)

1. A discrete gradient chromatogram constructed by coupling and mixing of four primary color fibers and the spinning of gradient colored yarns are used to obtain the coupled fiber chromatogram between the four color fibers based on different coupling mass ratio combinations for the four color fibers The corresponding coupling fiber is characterized in that it comprises the following steps: Step A. For the coupling mass ratio of the first color fiber α, according to the preset number of decrements n, decrease in equal proportions from 100% to 0%, and obtain the coupling mass ratio of the α color fiber under each descending sequence number, and The general formula for obtaining the coupling mass ratio corresponding to the descending sequence number of the α-color fiber is as follows: m _α *(n-i+1)/n For the coupling mass ratio of the second color fiber β, according to the preset increment number n, increase in equal proportion from 0% to 100% in turn, and obtain the coupling mass ratios corresponding to the β color fibers under each increment sequence number, and obtain The general formula for the coupling mass ratio of the β-color fiber corresponding to the descending order number is as follows: m _β *(i-1)/n For the coupling mass ratio of the third color fiber γ, according to the preset increment times n, increase in equal proportion from 0% to 100% in turn, obtain the coupling mass ratio corresponding to the γ color fiber under each increment sequence number, and obtain The general formula of the coupling mass ratio of the γ-color fiber corresponding to the descending order number is as follows: m _γ *(i-1)/n For the coupling mass ratio of the fourth color fiber δ, according to the preset increment times n, increase in equal proportion from 0% to 100% in turn, and obtain the coupling mass ratios corresponding to the δ color fibers under each increment sequence number, and obtain The general formula of the coupling mass ratio corresponding to the descending order number of the δ color fiber is as follows: m _δ *(i-1)/n Among them, the preset decreasing times are equal to the preset increasing times, i=1, 2, ..., n, n+1, m _α represents the quality of α color fiber, m _β represents the quality of β color fiber, m _γ represents γ color fiber The quality of , m _δ represents the quality of δ color fiber, then enter step B; Step B. Obtain the combinations of the four color fibers α, β, γ, and δ according to their corresponding coupling mass ratios under different combinations of coupling sequence numbers, that is, the coupling formulas of the coupled fibers under each combination of coupling sequence numbers, and further obtain the coupling The general formula of the coupling quality of the fiber corresponding to the coupling sequence number combination is as follows: Then enter step C; wherein, T _{i, j, k} represents the coupling quality general formula of coupling fiber corresponding coupling order number combination i, j, k, j=1, 2, ..., n, n+1, k=1, 2, ..., n, n+1, and (i+j)≤(n+2), (i+k)≤(n+2), (j+k)≤(n+2); Step C. According to the coupling general formula of coupling fiber corresponding coupling sequence number combination, obtain four kinds of color fibers and respectively correspond to the mixing ratio general formula of coupling sequence number combination as follows: Then enter step D; where: K _αi,j,k represents the coupling mass mixing ratio formula of α-color fibers corresponding to the coupling sequence number combination i,j,k, K _βi,j,k represents the coupling sequence number combination of β-color fibers The coupling mass mixing ratio formula of i, j, k, K _{γi, j, k} represents the coupling mass mixing ratio formula of the γ color fiber corresponding to the coupling sequence number combination i, j, k, K _{δi, j, k} represents the delta color The coupling mass mixing ratio general formula of the fiber corresponding to the coupling sequence number combination i, j, k; Step D. According to the coupling mass mixing ratio general formulas of the four color fibers respectively corresponding to the combination of coupling sequence numbers, for the RGB colors of the four color fibers, obtain the RGB general formula of the coupling fiber corresponding to the combination of coupling sequence numbers, and then obtain the coupling fibers respectively corresponding to The colors of different coupling sequence number combinations, that is, the obtained coupling fibers correspond to the colors of different coupling mass ratio combinations among the various color fibers. The general formula of the coupling fiber chromatogram of the four color fibers based on different coupling mass ratio combinations is as follows: R _Ti,j,k ＝K _αi,j,k *R _α +K _βi,j,k *R _β +K _γi,j,k *R _γ +K _δi,j,k *R _δ G _Ti,j,k ＝K _αi,j,k *G _α +K _βi,j,k *G _β +K _γi,j,k *G _γ +K _δi,j,k *G _δ B _Ti,j,k ＝K _αi,j,k *B _α +K _βi,j,k *B _β +K _γi,j,k *B _γ +K _δi,j,k *B _δ Then obtain the four-color fiber discretization gradient chromatogram, and then enter step E; wherein, R _Ti,j,k , G _Ti,j,k , B _Ti,j,k are the chromatograms of the coupled fiber samples, R _α , G _α , B _α is the color tristimulus value of color fiber α, R _β , G _β , B _β are the color tristimulus value of color fiber β, R _γ , G _γ , B _γ are the color tristimulus value of color fiber γ, R _δ , G _δ , B _δ are the color tristimulus values of colored fiber δ; Step E. Obtain the densities ρ _α , ρ _β , ρ _γ , ρ _δ , and then enter step F; Step F. According to the blending ratio general formula corresponding to the combination of the four color fibers respectively corresponding to the coupling sequence numbers, combined with the linear densities _ρα , _ρβ , _ργ , _ρδ of the color fiber roving corresponding to the four color fibers respectively, according to the following formula: E _αi,j,k = K _αi,j,k *ρ _yi,j,k /ρ _α E _βi,j,k ＝K _βi,j,k *ρ _yi,j,k /ρ _β E _γi,j,k ＝K _γi,j,k *ρ _yi,j,k /ρ _γ E _δi,j,k ＝K _δi,j,k *ρ _yi,j,k /ρ _δ Obtain the draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colored fiber rovings respectively, then based on the draft ratio E _{αi ,j,k} , E _βi,j,k , E _γi,j,k , E _δi,j,k , after asynchronous drafting and converging twisting of four colored fiber rovings, the chromatogram corresponding to the coupled fiber chromatogram is obtained Coupling yarn, where ρ _{yi, j, k} represents the yarn obtained after asynchronous drafting, converging and twisting for the four color fibers α, β, γ, δ, corresponding to the coupling sequence number combination i, j, k preset line density. 2. According to claim 1, a kind of discrete gradient color spectrum constructed by coupling and mixing of four-primary-color fibers and the spinning of gradient color yarns, is characterized in that: it also includes step G as follows, after step F is executed, enter step G; Step G. According to the draft ratios E _αi,j,k , E _βi,j,k , E _γi,j,k , E _δi,j,k of the channels corresponding to the four colored fiber rovings, and the four color The linear densities ρ _α , ρ _β , ρ _γ , and ρ _δ corresponding to the fiber roving are as follows: ρ' _yi,j,k = ρ _α /E _αi,j,k + ρ _β /E _βi,j,k + ρ _γ /E _γi,j,k + ρ _δ /E _δi,j,k Obtain the actual linear density ρ' _{yi,j,k of the yarn obtained after asynchronous drafting, converging and twisting for the four colored fiber rovings corresponding to the coupling sequence number combination i,j,k} . 3. According to claim 1 or 2, the spinning of discrete gradient color spectrum and gradient color yarn constructed by coupling and mixing of a kind of four primary color fibers is characterized in that, in the step G, it also includes the following: The four rovings prepared from the four-color fibers are asynchronously drawn to realize coupling mixing, and then merged and twisted to form four-color mixed-color yarns. According to the coupling general formula of the coupling sequence number combination corresponding to the coupling fibers, the following formula is used: K _yαi,j,k ＝(ρ _α /E _αi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk ) K _yβi,j,k ＝(ρ _β /E _βi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk ) K _yγi,j,k ＝(ρ _γ /E _γi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk ) K _yδi,j,k =(ρ _δ /E _δi,j,k )/(ρ _α /E _αi,j,k +ρ _β /E _βi,j,k +ρ _γ /E _γi,jk +ρ _δ /E _δi,jk ) Obtain the general formula K _yαi,j,k , K _yβi,j,k , K _yγi,j,k , K _yδi,j,k of the four color fibers in the yarn respectively corresponding to the combination of the coupling sequence number; among them, K _yαi,j,k represents the blending ratio formula of the α color fiber corresponding to the coupling sequence number combination i,j,k in the yarn, K _yβi,j,k represents the blending of the β color fiber corresponding to the coupling sequence number combination i,j,k General formula, K _{yγi, j, k} represents the blending ratio formula of γ color fibers corresponding to the coupling sequence number combination i, j, k, K _{yδi, j, k} represents the δ color fiber corresponding to the coupling sequence number combination i, j, k The blend ratio of general formula. 4. According to claim 1 or 2, the discrete gradient color spectrum constructed by coupling and mixing of four-color fibers and the spinning of gradient color yarns are characterized in that: it also includes step H as follows, after step G is executed, enter step H ; Step H. According to the blending ratio general formula corresponding to the coupling sequence number combination of the four color fibers respectively, for the RGB colors of the four color fibers, the RGB general formula corresponding to the coupling sequence number combination of the coupling fiber is obtained as follows: R _yi,j,k ＝K _yαi,j, k *R _yα +K yβi,j, _k *R _yβ +K _yγi,j,k *R _yγ +K _δγi,j,k *R _yδ G _yi,j,k =K _yαi,j, k *G _yα +K yβi,j, _k *G _yβ +K _yγi,j,k *G _yγ +K _yδi,j,k *G _yδ B _yi,j,k =K _yαi,j, k *B _yα +K yβi,j, _k *B _yβ +K _yγi,j,k *B _yγ +K _yδi,j,k *B _yδ Among them, R _yα , G _yα , B _yα represent the color tristimulus value of the yarn with linear density ρ' _yi,j,k spun from α-color fiber; R _yβ , G _yβ , _{By yβ} represent The color tristimulus value of the yarn with linear density ρ' _yi,j,k spun, R _yγ , G _yγ , B _yγ represent the yarn with linear density ρ' _yi,j,k spun from γ-color fiber The color tristimulus value of the line.