CN108593112B - Color matching device and method for color-mixing proofing of colored spun yarns - Google Patents
Color matching device and method for color-mixing proofing of colored spun yarns Download PDFInfo
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The invention discloses a color matching device for color mixing and proofing of colored spun yarns, which comprises a light source box, and a color mixing disc assembly and dynamic color reading equipment which are arranged in the light source box. The color mixing disc assembly comprises a color mixing disc, a color mixing disc base, a rotating shaft and a motor; the color mixing disc base is connected with the motor through a rotating shaft, the motor drives the color mixing disc base to rotate, and the color mixing disc rotates along with the rotation of the color mixing disc base. The invention also provides a color matching method for the color-spun yarn color-mixing proofing, fibers with different colors are uniformly and flatly laid on the color-mixing disc according to the designed proportion, the color-mixing disc rotates at a certain speed to form uniform color, and then the mixed color data is read by utilizing dynamic color reading equipment in the light source box. The method can avoid the difference of manual vision color matching, reduce the technical requirements on the design designer, and improve the speed and the accuracy of yarn design.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a color matching device and method for color-blended proofing of color-spun yarns.
Background
The colored spun yarn is a new spinning technology that adopts fiber to be dyed and spun firstly, and is from the spinning after the loose wool dyeing of the wool spinning and then the spinning is transplanted to the cotton textile industry for application. Because it dyes the fiber with various colors first and then spins, the yarn presents colorful natural color, the fabric woven by the spun-dyed yarn has hazy three-dimensional effect and natural feeling, and is popular with the domestic and foreign users. Meanwhile, the knitted cotton fabric can be directly used as a knitted cotton fabric without dyeing treatment in subsequent processing, so that the environmental pollution is reduced, and the green environmental protection requirement is met.
Through continuous improvement of the process and technological innovation, the colored spun yarn production sequentially goes through several development stages of producing the colored spun yarn from pure cotton gray yarn, multi-color yarn, multi-raw material blend colored spun yarn, various novel spinning technologies and the like, so that the colored spun yarn is developed from coarse to fine from a single variety to a diversified variety, and the colored spun yarn not only has changes in fiber color and various raw material combinations, but also has great changes in the yarn structure. At present, the colored spun yarn production in China develops from hundreds of thousands of spindles in the initial stage to nearly 1000 thousands of spindles, and the colored spun yarn not only quantitatively ranks at the top of the world, but also has a leading position in the world in the quality and grade of varieties. Along with the acceleration of the fashion pace of textile and clothing, the requirements on the speed and quality of the development of novel yarns are continuously improved.
However, the color of the sample printed during color matching is only similar to or infinitely close to that of the standard sample, so that even if the sample is produced by feeding the same batch of raw materials twice, the color may have great difference, but the color difference is difficult to quantify by visual inspection, which is also the difficulty of color matching and color matching. How to grasp the color proximity degree in the actual color matching operation process directly influences the production efficiency, the cost and the delivery time. Under the condition of a certain production scale, the color proofing work is an inevitable problem in the whole process of producing the colored spun yarn. Therefore, in order to ensure the orderly production and the timely delivery, the color mixing work becomes the key point in the preparation work before the production of the color spinning mill.
The method for matching colors in the existing color spinning sample making process is to analyze a future sample according to experience and historical data, estimate the main color and color matching proportion scheme, repeatedly draft and mix fibers with different colors, then thin the fibers into a section of thick yarn with the thickness similar to that of a thick yarn strip, feed the thick yarn strip to a spinning frame to spin the thick yarn, wind the yarn into a strand shape, and compare the color difference between the color of the coming sample and the color of the pilot-spun yarn. Because the whole process is empirical, the whole proofing process usually needs to be carried out for 4-5 times to achieve similar effects, sometimes the longer time is spent due to inaccurate selection of color fibers, the accuracy rate is low, the working efficiency is low, and the requirement of fast fashion of the textile industry cannot be met. The existing colored spinning proofing method has high requirements on the experience of technicians, can participate in proofing after about 2 years of training, and has the defects that the eyesight is weaker and weaker as the ages of the technicians increase, and the proofing result is influenced by factors such as individual difference among proofing workers. The present invention improves the prior art by adopting a modern digital color testing technology.
Disclosure of Invention
The invention aims to solve the technical problem of providing a color matching device and a color matching method for color-spun yarns to mix colors and make a sample, which effectively avoid the difference of color matching by manual sight, have low cost and are simple to operate.
In order to solve the technical problem, the invention provides a color matching device for color-mixing proofing of colored spun yarns, which is characterized in that:
the color matching device comprises a light source box;
a color mixing disc assembly and dynamic color reading equipment are arranged in the light source box;
the color mixing disc assembly comprises a color mixing disc, a color mixing disc base, a rotating shaft and a motor;
the color mixing disc base is connected with a motor through a rotating shaft, and the motor drives the color mixing disc base to rotate;
the color mixing disc is arranged on the upper surface of the color mixing disc base;
the dynamic color reading equipment is right opposite to the upper surface of the color mixing disc.
The improvement of the color matching device for color mixing proofing of the invention comprises the following steps:
the upper surface of the color mixing disc is provided with X (X is more than 1, X is a positive integer) scale marks which are uniformly distributed along the circumferential direction, and any two adjacent scale marks and the circle center enclose to form a fan-shaped area, and the fan-shaped areas with the same shape and size are formed by the two adjacent scale marks.
The color matching device for color mixing proofing of the invention is further improved as follows:
the upper surface of the color mixing disc is provided with a circumference a and a circumference b from the circle center to the outside in sequence, and the area between the circumference a and the circumference b is a fiber placing area.
The color matching device for color mixing proofing of the invention is further improved as follows:
the color mixing disc is detachably connected with the color mixing disc base.
In order to solve the technical problem, the invention also provides a color matching method for performing color mixing and proofing on the colored spun yarns by using the device, which comprises the following steps:
s1, straightening fibers adopted in the colored spun yarns to be subjected to sample drawing, uniformly and flatly paving the fibers in a fiber placement area on the upper surface of the color mixing disc according to the proportion (weight ratio), and fixing the fibers on the upper surface of the color mixing disc;
s2, mounting the color mixing disc obtained in the step S1 on a color mixing disc base located in a light source box, turning on a motor, and enabling a rotating shaft to drive the color mixing disc and the color mixing disc base to rotate at a rotating speed of 3-10 rad/S;
s3, reading the color value of the upper surface of the color mixing disk rotating in the step S2 by using a dynamic color reading device.
The improvement of the color matching method for the color-blended sample of the colored spun yarn of the invention comprises the following steps:
the dynamic color reading device in step S3 reads the color value at the middle position of the fiber fixed on the upper surface of the color mixing disk in step S2.
Note: the middle position of the fiber is (L/2) ± 1mm of the length of the fiber, and L is the length of the fiber.
The color matching method for the color-blended sample of the colored spun yarn is further improved as follows:
the optimum rotation speed of the color mixing disc in the step S2 is 6 rad/S.
The invention evenly lays the fibers with different colors on the color mixing disc according to the designed proportion, leads the color mixing disc to rotate at a certain speed to form uniform color, and then utilizes a color detector (mobile phone app) to read the R, G, B value of the mixed color under the light source of a standard light source box D65.
Compared with the prior art, the invention has the technical advantages that:
1. the invention can improve the efficiency of proofing and color matching, effectively avoid uneven mixing and large color matching difference of manual vision, and improve the speed and accuracy of yarn proofing.
2. The method can effectively reduce the technical requirements on the design designer, does not need to design and develop yarns according to a sophisticated color model, and also avoids errors caused by uncertainty of finishing coefficients of different material fibers in the color model.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a color mixing disc in a color matching device for color-mixing proofing of color-spun yarns.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1, a color matching apparatus for color mixing proofing of spun-dyed yarn, as shown in fig. 1, comprises a light source box, and a color mixing disc assembly and a dynamic color reading device mounted in the light source box. The dynamic color reading device is used for reading color values, and the dynamic color reading device in the embodiment adopts a mobile phone provided with color reading software (a color detector).
The color mixing disc assembly comprises a color mixing disc, a color mixing disc base, a rotating shaft and a motor (the motor is connected with a power switch), and the color mixing disc base is connected with the motor through the rotating shaft; mix look dish demountable installation at colour mixture dish base upper surface, when the motor began work, mix look dish base and driven the rotation by the pivot, mix the colour dish and rotate along with colour mixture dish base rotation. The concrete connection mode is as follows: the lower surface (circle center) of the color mixing disc base is fixedly connected with the rotating shaft, and the color mixing disc is fixed on the upper surface of the color mixing disc base by using a clamp.
As shown in fig. 1, 100 scale marks (the scale mark arranged at the circumference c in fig. 1) uniformly distributed along the circumferential direction are arranged on the upper surface of the color mixing disc, and the 100 scale marks divide the color mixing disc into 100 regions with the same shape and size, that is, any two adjacent scale marks surround the center of a circle to form a sector region, which is 100 sector regions in total, and the central angle of each sector region is 3.6 °. In the color matching process of color spinning proofing, fibers adopted in the color spinning can be uniformly and flatly paved in an area of a corresponding range of the upper surface of a color mixing disc according to the proportion; in this embodiment, the total weight of the fibers used in the spun-dyed yarn placed on the color mixing disc is N, the fibers with the corresponding weights are extracted according to the proportion of the fibers in the spun-dyed yarn, and the fibers are uniformly spread in the area corresponding to the range of the upper surface of the color mixing disc according to the proportion, and if the weight ratio of the red fibers in the spun-dyed yarn is 10%, 10% of the N red fibers are extracted and uniformly spread in 10 divided areas of the upper surface of the color mixing disc.
Note: the staff can set up X (X > 1, X is the positive integer) along the evenly distributed scale mark of circumference according to the requirement for the look in the actual colored spun yarn drawing, thereby form X region that the shape size is the same. Such as:
when the color mixing ratio is 10%: 30%: at 60%, ten-fold color mixing pans (i.e., X ═ 10) may be selected.
When the color mixing ratio is 12%: 34%: at 54%, one hundred parts of color mixing disk (i.e., X ═ 100) may be used.
When the color mixing proportion is as follows: 12.4%: 26.8%: at 60.8%, a thousand-point color mixing disk (i.e., X1000) may be used.
In this embodiment, the color mixing disc is made of transparent acrylic material, the color mixing disc is a circular disc with a radius of 50 mm, as shown in fig. 1, the upper surface of the color mixing disc is further provided with a circumference a and a circumference b, and the circumference a and the circumference b are both marked with scales corresponding to the circumference c (the scales at the circumference a and the circumference b are omitted in fig. 1 for clarity and neatness of the drawing). Circumference a is a circumference of 10 mm from the center of the circle, and circumference b is a circumference of 45 mm from the center of the circle. And (3) paving the carded and flattened fibers in an area (namely a fiber placement area) between the circumference a and the circumference b along the radial direction of the color mixing disc, and paving the color mixing disc in a segmented manner according to different colors. The two ends of the fiber are bonded by sticky rice glue, so that the fiber is prevented from sliding and drifting in the rotating process. The total weight of the above mixed fibers weighed 1 gram, and the weight of each fiber was distributed in the mixed ratio. The distance between the circumference a and the circle center can be set according to actual conditions, and the fiber end close to the circle center can not be overlapped when the fiber is tiled.
Note: the color mixing disc base is also made of transparent acrylic materials, the color mixing disc base is a circular disc with the radius larger than or equal to that of the color mixing disc, and the color mixing disc base and the color mixing disc are consistent in size and shape.
The size of the color mixing disc can be designed according to the length of the fibers in actual work:
the distance between the circumference a and the circumference b on the color mixing disk is adapted to the length of the fiber, and the color mixing disk in this embodiment is designed for the fiber with the length of 35 mm.
Because the length of the cotton fiber is about 30mm, the straightened fiber is uniformly fixed in the area (fiber placing area) between the circumference a and the circumference b on the color mixing disc along the radial direction, and the fiber can be ensured to be spread smoothly so as to be convenient for testing. If the diameter is too small, the fibers are overlapped near the circular core part, which is not beneficial to color mixing test after rotating the disc; if the diameter is too large, the area of the disk is increased, the total amount of fibers is not enough to pave the whole disk, and the color mixing test after the disk is rotated is also not facilitated.
Mix the color disc and fix on colour mixture dish base upper surface through the mode of anchor clamps, the size of colour mixture dish base is unanimous with the colour mixture dish in this embodiment. The dynamic color reading device is opposite to the upper surface of the color mixing disc so as to read the color numerical value of the upper surface of the color mixing disc, namely, when the color mixing disc rotates, the dynamic color reading device reads the color numerical value of the mixed color of the fibers on the upper surface of the color mixing disc.
And setting the color reading point of the dynamic color reading equipment at a position facing to the fiber placing area on the color mixing disc, and optimally setting the color reading point at a position facing to the middle sections (namely the middle sections of the fibers) in the areas of the circumference a and the circumference b to read the mixed color numerical value. The range of the middle position of the fiber in this embodiment means the position (L/2) ± 1mm of the length of the fiber, where L is the length of the fiber.
Usually, the length of the fiber adopted by the cotton spinning system is 30-40 mm, and the color mixing disc designed in the embodiment is used for the fiber with the length of 35mm, so that the dynamic color reading position is designed to be just opposite to the middle section of the fiber fixed on the color mixing disc, namely, the position 16.5-18.5 mm away from any one end of the fiber can obtain a stable and accurate color mixing result.
The method for carrying out color matching by using the color matching device comprises the following steps:
s1, uniformly and flatly paving the fibers adopted in the colored spun yarns to be subjected to sample printing in the fiber placement area on the upper surface of the color mixing disc according to the proportion of the fibers, and fixing the fibers on the upper surface of the color mixing disc;
in the present example where the spun-dyed yarn contained 70% red fibers, 12% yellow fibers, 15% green fibers and 3% black fibers, 0.7 grams of red fibers, 0.12 grams of yellow fibers, 0.15 grams of green fibers and 0.03 grams of black fibers were taken and the fibers were fully straightened with a fiber stretcher and the red fibers were evenly laid flat in a 70 grid size area on the upper surface of the color mixing disk. And in the same way, uniformly paving the residual fibers in the area of the corresponding range of the upper surface of the color mixing disc in sequence.
Note: the above% are by weight.
The fibers are uniformly and flatly laid in the fiber placement area in the corresponding range of the upper surface of the color mixing disc according to the proportion, and different arrangement methods of the fibers with different colors can not influence the color mixing result.
S2, mounting the color mixing disc obtained in the step S1 on a color mixing disc base, turning on a power switch to enable a motor to work, and driving the color mixing disc and the color mixing disc base to rotate at the rotating speed of 3rad/S by a rotating shaft.
Note: the color mixing disk is now located in a light source box, which in this embodiment employs a D65 light source.
S3, reading the color value of the upper surface of the color mixing disk rotating in the step S2 by using a dynamic color reading device.
The dynamic color reading device reads the R, G, B value of the mixed color.
Note: the color reading point of the dynamic color reading equipment is selected within the range of the middle section of the fiber, namely, when the 35mm fiber is adopted, the position, 16.5-18.5 mm away from any one end of the fiber, of the dynamic color reading equipment can obtain a stable and accurate color mixing result.
When the speed is lower than 3rad/s, the speed is too low, so that the fibers with different colors cannot form the whole color effect, and the data read by the dynamic color reading equipment has large fluctuation, is the data of the fibers with different colors, and is not the color data after color mixing.
When the speed is higher than 10rad/s, the wind speed is too high due to too high speed, and fiber drifting and instability are brought to influence the test result.
Example 2, in example 1, the weight ratio of the red fibers was changed from "70%" to "45%", the weight ratio of the yellow fibers was changed from "12%" to "32%", the weight ratio of the green fibers was changed from "15%" to "13%", the weight ratio of the black fibers was changed from "3%" to "10%", and the rotational speed was changed from "3 rad/s" to "6 rad/s", and the rest were the same as in example 1.
Example 3, in example 2 "red fiber" changed to "white fiber", its weight ratio is not changed, the rotation speed from "3 rad/s" to "9 rad/s", the rest is the same as example 2.
Experiment 1, accuracy of color matching method for visually inspecting color spun yarn color mixing proofing:
the R, G, B value read in step S3 according to embodiment 1 is used to generate a corresponding color patch 1 by photo software (e.g., photoshop).
Fibers with corresponding colors are fully mixed according to the proportion of the spun-dyed yarns in the embodiment 1, then the spun-dyed yarns are spun, R, G, B values of the spun-dyed yarns obtained through spinning are read by dynamic color reading equipment, and finally, photo software (such as photoshop) is used for generating corresponding color blocks 2 according to the read R, G, B values.
And randomly selecting 20 volunteers, evaluating the color consistency of the generated color block 1 and the color block 2, wherein the evaluation comprises 3 evaluations of color consistency, slight color difference and obvious color difference, and the final result is shown in table 1.
All of the above examples 2 and 3 were tested as described in experiment 1 and the results are shown in table 1:
TABLE 1
As shown in Table 1, in the examples 1-3, no one considers that the color difference between the color block 1 and the color block 2 is large, and the consistent ratio of the colors is not less than 90%, so that the invention proves that the invention has high accuracy rate for the color mixing effect suitable for various colors in different ratios; by the method, the technical requirements of a sample designer in the traditional color spinning sample making process can be reduced, the difference of manual vision color matching is effectively avoided, the working efficiency is improved, and the working cost is reduced.
The invention utilizes a modern color reading method (namely a color detector) and combines a color mixing theory, fibers with different colors are uniformly paved on a color mixing disc according to a designed proportion, the color mixing disc rotates at a certain speed to form a uniform color, and then a color picker is utilized to read the R, G, B value of the mixed color under the light source of a light source box D65. By adopting the method, the time consumption, uneven mixing and the difference of manual sight color matching in the traditional color spinning proofing process can be avoided, and the speed and the accuracy of yarn proofing can be greatly improved. The technical requirements on the design designer are reduced, the yarn is not required to be designed and developed according to the profound and complicated color model, and errors caused by uncertainty of finishing coefficients of different material fibers in the color model are avoided.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (2)
1. The color matching method for color-blended proofing of colored spun yarns is characterized by comprising the following steps of:
the utilized color matching device for color mixing and proofing of the colored spun yarns comprises a light source box;
a color mixing disc assembly and dynamic color reading equipment are arranged in the light source box;
the color mixing disc assembly comprises a color mixing disc, a color mixing disc base, a rotating shaft and a motor;
the color mixing disc base is connected with a motor through a rotating shaft, and the motor drives the color mixing disc base to rotate;
the color mixing disc is arranged on the upper surface of the color mixing disc base;
the dynamic color reading equipment is right opposite to the upper surface of the color mixing disc;
the upper surface of the color mixing disc is provided with X scale marks which are uniformly distributed along the circumferential direction, and any two adjacent scale marks and the circle center enclose to form a fan-shaped area, and X fan-shaped areas with the same shape and size are formed;
the upper surface of the color mixing disc is provided with a circumference a and a circumference b from the circle center to the outside in sequence, and the area between the circumference a and the circumference b is a fiber placing area;
the color matching method comprises the following steps:
s1, straightening fibers adopted in the colored spun yarns to be subjected to sample drawing, uniformly and flatly paving the fibers in a fiber placing area on the upper surface of the color mixing disc according to the proportion of the fibers, and fixing the fibers on the upper surface of the color mixing disc;
s2, mounting the color mixing disc obtained in the step S1 on a color mixing disc base located in a light source box, turning on a motor, and enabling a rotating shaft to drive the color mixing disc and the color mixing disc base to rotate at the rotating speed of 6-9 rad/S;
s3, reading the color value of the middle position of the fiber fixed on the upper surface of the color mixing disc in the rotation in the step S2 by using a dynamic color reading device:
the R, G, B values of the blended color were read using a color detector under a standard light box D65 light source.
2. The color matching method for color-blended sample printing of spun-dyed yarn according to claim 1, characterized in that: the color mixing disc is detachably connected with the color mixing disc base.
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| GB191003551A (en) * | 1910-02-14 | 1911-02-14 | John Heywood Ltd | Improved Method of and Appliances for Indicating or Testing Colour Values. |
| US3804531A (en) * | 1967-10-02 | 1974-04-16 | T Kosaka | Color analyzer |
| CN2585202Y (en) * | 2002-09-24 | 2003-11-05 | 瑞比染色试机有限公司 | Pigment testing machine |
| CN104711718A (en) * | 2015-03-31 | 2015-06-17 | 浙江湖州威达纺织集团有限公司 | Rapid-sampling color matching method of color-spun yarns |
| CN206420568U (en) * | 2016-12-28 | 2017-08-18 | 广州赫伽力智能科技有限公司 | A kind of online Color Detecting System of yarn based on color mark sensor |
| CN107766603B (en) * | 2017-04-24 | 2019-01-18 | 东华大学 | A kind of colour-spun yarns computer is measured color method |
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