A method of producing a fabric designed with a color image

Abstract

The present application relates to the technical field of fabric production, in particular to a production method of a color picture fabric, wherein four channels of a digital color picture are taken as four weaves, four gray scale patterns are obtained by color separation, the four weaves are rotated by 90 degrees, and the generated pattern is rotated by 90 degrees to return to the original picture, at this time, the strengthening direction of the pattern point is changed to the weft direction, and the color picture fabric is obtained by using cyan, magenta, yellow and black weft yarns. The present application takes the CMYK four-color printing process as the patent innovation point, adopts the "channel separation" mode under the CMYK mode to divide the color picture into four versions, and solves the technical bottleneck of arranging the CMYK four colors according to the corresponding weft yarns in the pattern weaving CAD by using the "weave taking picture" mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric production, in particular to a production method of a color picture fabric designed by separate design. BACKGROUND

[0002] In order to improve the rich effect of color, modern digital color picture fabric is generally designed by using multi-color yarns and heavy weft organization. The existing technology has more research on color picture organization library, but the design processing is relatively troublesome. How to use the existing pattern software to quickly and efficiently design, there are few public technical data.

[0003] Chinese patent application CN107557968A solves the problem of weft selection and four pattern correspondence by twice design. First, four design files C, M, Y and K are generated by compressing to 1 / 4 of the original size, and then the original size design is reconstructed as a single layer fabric processing. According to the weft color and the weft color, each weft yarn of the four design files is arranged in sequence in the reconstructed design, and is compounded into a complete organization file. This design method is also a method, but the twice design method is too complicated for designers.

[0004] Chinese patent application CN105970435A discloses a production method of a large jacquard color picture fabric. The picture is first processed into a five-color model, and then each color is processed into a gray scale. Then, the five colors are recombined into a new image according to the order, and then the design grid of each gray scale is obtained. However, the existing image processing software cannot perform five-channel color separation, and it is difficult to operate the picture color separation process into a five-color model. At the same time, there is a color deviation problem in the process of this method. This is because the green color is superimposed during the combination of cyan, magenta, yellow, black and green, and the overall image of the fabric has a green color tone. Therefore, this production method is mainly suitable for fabrics with green color tone, and is not suitable for other color picture fabrics except green. SUMMARY

[0005] In view of the technical problems of complex and tedious design process of existing color picture fabric, the present application provides a production method of a color picture fabric designed by separate design. The present application takes CMYK four-color printing process as the patent innovation point, and uses the "channel separation" mode under the CMYK mode to divide the color picture into four versions. The "separate design" method solves the technical bottleneck of arranging the CMYK four colors according to the corresponding weft yarns in the pattern CAD.

[0006] The technical scheme of the present application is as follows:

[0007] The production method of a color image fabric is designed by first taking the C, M, Y, K four channels of a digital color image picture as 1, 2, 3, 4 four groups, respectively, to obtain four gray scale hierarchical patterns, and rotating the four groups by 90°, and sequentially corresponding the color number and the weave, and rotating the generated pattern by 90° back to the original image, at this time, the weave point strengthening direction of the obtained pattern is changed to the weft direction, and the color image fabric is obtained by using cyan, magenta, yellow and black weft yarns for weaving. In the method, the warp yarns can be used as natural yarns or other yarns of any color.

[0008] Further, it specifically includes image processing, pattern design, and weaving steps;

[0009] The image processing step is to convert the digital color image picture into a weaving picture, and then to separate the weaving picture into C, M, Y, K four gray scale pictures by the channel separation method in the CMYK mode.

[0010] The pattern design includes the following steps:

[0011] (1) The C, M, Y, K four gray scale pictures are subjected to process color separation to obtain four different gray scale hierarchical patterns from light to dark;

[0012] (2) According to the division of the warp yarn sequence in the jacquard machine, the four weft yarns of cyan, magenta, yellow and black are designed for division according to the production difficulty, production cost and efficiency and other factors, the horizontal pixel or weft density is reduced, the vertical pixel or warp density is unchanged, and the four groups of images are rotated by 90°;

[0013] (3) Then a sample card is established, the size of the sample card is the original image without reduction, and the sample card does not include functional needles;

[0014] (4) Four groups of shadow and light weaves are designed as a color image pattern design scheme using weft yarns, since the four color weft yarns and the four pattern weft corresponding scheme are different from the prior art, the horizontal strengthening method is different from the prior art, the weave points of the shadow and light weave library are in the longitudinal strengthening mode, and a full color shadow and light weave library is established;

[0015] (5) According to the division of the warp yarn sequence in the jacquard machine, the multi-group division pattern plate is selected for pattern plate processing, that is, the weft number / warp group number, and the corresponding system of color number and weave is processed, C, M, Y, K are sequentially corresponding to 1 / 1, 1 / 2, 1 / 3, 1 / 4, and four groups of weaves are combined, and saved as a WBF format file;

[0016] 6) After the WBF format file is processed by the screen- pattern, the image is restored to the size of the image before being reduced, and the image is rotated back 90° to the original image, saved as a BMP format, and spliced with the functional needle to generate a JC5 format file for weaving.

[0017] Further, the image processing is performed by using Photoshop software.

[0018] Further, the process color selection is cloud color separation, and the gray scale is 14 levels.

[0019] Further, the process color is performed by using the screen weaving CAD software, and preferably, the screen weaving top software is used.

[0020] Further, according to the comprehensive design of production difficulty, production cost and efficiency and many other factors, in the screen weaving design step (2), the horizontal pixel or the weft density is reduced to 1 / 4 of the original image.

[0021] Further, the functional needle includes a weft guide needle and an edge stitch.

[0022] Further, the weaving is performed by using the Staubli jacquard machine matched with the air jet loom.

[0023] The present application has the following advantages:

[0024] The present application uses the existing screen weaving CAD, through the function of selecting the pattern in each division, sets the sample card in the order of 1, 2, 3, 4 four divisions, in the operation interface of "weft weight / warp division number, color number and organization corresponding relationship", selects C, M, Y, K four gray scale patterns for 1, 2, 3, 4 four divisions, and correspondingly selects the color number and the organization, according to the division of the warp sequence in the jacquard machine, the generated screen file needs to be treated as a picture and rotated 90°, at this time, the strengthening direction of the screen point of the screen obtained is changed to the weft direction, which is equivalent to changing the longitudinal strengthening of the satin base organization to the horizontal strengthening. This processing method is more simple and efficient, and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a partial screenshot of the sample card established in embodiment 1 of the present application.

[0027] Figure 2is the corresponding relationship among the weft count / warp count, color number and weave of the C layer in Embodiment 1 of the present application.

[0028] Figure 3 is the corresponding relationship among the weft count / warp count, color number and weave of the M layer in Embodiment 1 of the present application.

[0029] Figure 4 is the corresponding relationship among the weft count / warp count, color number and weave of the Y layer in Embodiment 1 of the present application.

[0030] Figure 5 is the corresponding relationship among the weft count / warp count, color number and weave of the K layer in Embodiment 1 of the present application. DETAILED DESCRIPTION

[0031] In order to make the personnel in the technical field better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person of ordinary skill in the art without creative labor should belong to the protection scope of the present application.

[0032] Embodiment 1

[0033] A color picture fabric is produced by using combed compact spun 60 English pure cotton grey yarn as the warp yarn and four kinds of combed compact spun pure cotton 60 English yarn as the weft yarn, i.e. cyan, magenta, yellow and black, with the specification design of 173 roots / inch of warp density, 260 roots / inch of weft density and 105 inches of loom width; the design method is divided into design, and the specific steps are as follows:

[0034] 1. Image processing:

[0035] 1) The designed color picture is designed as the loom production size, with the size of 5040x5280 pixels.

[0036] 2) According to the design effect requirement, the loom image designed by the process is adjusted and processed by the Photoshop CS image processing software in terms of brightness, contrast, saturation and edge sharpening, and the color picture is divided into four gray pictures in the CMYK mode by the way of "channel separation", and the C, M, Y and K four groups of pictures are saved in the format that can be recognized by the jacquard top software respectively.

[0037] 2. Jacquard design:

[0038] 1) Use the cloud pattern color separation processing of C, M, Y, K four groups of pictures with the cloud pattern color separation, the shadow and light organization of this design is 16 satin, the minimum number of a group of shadow and light gradient organization, so it is 14 colors, and four groups of different gray scale patterns from light to dark are obtained through cloud pattern color separation processing.

[0039] 2) According to the production difficulty, production cost and efficiency and many other factors, use cyan, magenta, yellow and black weft yarns for design, reduce the horizontal pixel or weft density to 1 / 4 of the original image, the vertical pixel or warp density remains unchanged, and rotate the four groups of images by 90°.

[0040] 3) Establish sample card, this design does not include weft insertion and edge organization and other functional needles in the sample card, the size of the sample card is not reduced from the original image; according to the number of divisions, the sample card is established, because the maximum number of sample cards of the cloud pattern top software is 4800, the horizontal size of this design exceeds the maximum limit of the sample card, so 5280 is divided into left and right parts, and the sample card numbers of the left and right parts are 2640 respectively, and the sample card numbers of each division of the left and right parts are 660 respectively, the local sample card is shown in the accompanying drawings. Figure 1

[0041] 4) According to the digital color image full-color organization library design, design four groups of shadow and light organizations that cooperate with each other, as a weft yarn colored color image pattern design scheme, the organization point of the shadow and light organization library is in the form of vertical strengthening.

[0042] 5) According to the division of warp yarn sequence in the jacquard machine, the multi-division pattern plate output is selected in the pattern plate processing mode, that is, the corresponding system processing of weft count / warp division number, color number and organization, C, M, Y and K are sequentially corresponding to 1 / 1, 1 / 2, 1 / 3 and 1 / 4, and four groups of organizations are combined well, as shown in the accompanying drawings. Figures 2-5

[0043] 6) After the WBF format file is processed by the pattern plate-design, the image is restored to the size before being reduced, and the image is rotated by 90° back to the original image, saved as BMP format, and the function needles such as weft insertion needle and edge organization are spliced to generate JC5 format file, and then the machine is woven.

[0044] 4, weaving:

[0045] ​​The jacquard machine is matched with air-jet loom, the system supports JC5 format file, the JC5 file is copied into the jacquard computer, according to the weft insertion design, the 60s combed blue pure cotton yarn is introduced into the 1# weft accumulator, the 60s combed magenta pure cotton yarn is introduced into the 2# weft accumulator, the 60s combed yellow pure cotton yarn is introduced into the 3# weft accumulator, the 60s combed black pure cotton yarn is introduced into the 4# weft accumulator, and the weft density is designed as 260 / inch.

[0046] The weft insertion air pressure parameters of the four weft accumulators are set firstly, the main nozzle weft insertion time is 90°-180°, the air pressure is 0.2 MPa for the main nozzle and 0.3 MPa for the auxiliary nozzle, the loom process parameters are as follows: the back rest height position scale is -2, the front and back position scale is 5, the warp stopper front and back position scale is 0, the height position scale is -1, the loom shedding time is 300°, the on-machine tension is 330 kgf, the loom running state is good, and the digital color picture-like fabric is obtained.

[0047] Although the present application has been described in detail with reference to the preferred embodiments, it should be understood that the present application is not limited to the preferred embodiments. Various equivalent modifications or replacements can be made to the embodiments of the present application by those skilled in the art without departing from the spirit and essence of the present application, and these modifications or replacements should be within the scope of the present application. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, and these changes or replacements should be within the protection scope of the present application.

Claims

1. A method of producing a designed colored image fabric, characterized in that, Firstly, the C, M, Y, K four channels of the digital color picture are taken as 1, 2, 3, 4 four groups, and four gray scale patterns are obtained by separating the four groups, and the four groups are rotated by 90°, and the color number and the organization are corresponded in turn, and the generated pattern is rotated by 90° back to the original image, at this time the strengthening direction of the organization point of the pattern is changed to the weft direction, and the color picture fabric is obtained by using cyan, magenta, yellow and black weft yarns. Specifically, the method comprises the steps of image processing, pattern design and weaving. The image processing step is to convert the digital color picture into a weaving picture, and then separate the weaving picture into C, M, Y, K four gray scale pictures by the channel separation method in the CMYK mode. The pattern design comprises the following steps: (1) The C, M, Y, K four gray scale pictures are process separated to obtain four different gray scale patterns from light to dark; (2) The four groups of images are rotated by 90°, and the horizontal pixels or the weft density is reduced, and the vertical pixels or the warp density is unchanged, and the four groups of images are rotated by 90°; (3) Then a sample card is established, the size of the sample card is the original image without reduction, and the sample card does not include functional needles; (4) Four groups of shadow organizations are designed, the organization points of the shadow organization library are designed in the longitudinal strengthening mode, and a digital color picture full-color organization library is established; (5) The multi-group pattern plate is selected for output, and C, M, Y, K are corresponded to 1 / 1, 1 / 2, 1 / 3, 1 / 4 in turn, and the four groups of organizations are corresponded, and the WBF format file is saved; (6) After the WBF format file is processed by the pattern-intention, the image is restored to the size before reduction, and the image is rotated by 90° back to the original image, saved as BMP format, and the functional needles are spliced to generate a JC5 format file for weaving.

2. The production method according to claim 1, wherein The image processing is performed by using Photoshop software.

3. The production method according to claim 1, wherein The pattern design is performed by using pattern CAD software.

4. The production method according to claim 1, wherein In the step (1) of the pattern design, the process separation is cloud separation.

5. The production method according to claim 1, wherein In the step (1) of the pattern design, the gray scale number is 14.

6. The production method according to claim 1, wherein In the step (2) of the pattern design, the horizontal pixels or the weft density is reduced to 1 / 4 of the original image.

7. The production method according to claim 1, wherein In the step (3) of the pattern design, the functional needles include weft insertion needles and edge organizations.

8. The production method according to claim 1, wherein The weaving is performed by using a Staubli jacquard machine matched with an air jet loom.

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