CN108803496B - Method for calculating visible section length of surface yarns in warp and weft directions of fabric - Google Patents
Method for calculating visible section length of surface yarns in warp and weft directions of fabric Download PDFInfo
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- CN108803496B CN108803496B CN201810467594.5A CN201810467594A CN108803496B CN 108803496 B CN108803496 B CN 108803496B CN 201810467594 A CN201810467594 A CN 201810467594A CN 108803496 B CN108803496 B CN 108803496B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32153—Exchange data between user, cad, caq, nc, capp
Abstract
The invention provides a method for calculating the length of a visible section of warp and weft surface yarns of a fabric, which comprises the steps of obtaining basic fabric data required by a client through bar code scanning, or obtaining the basic fabric data required by the client through voice, characters or images; distributing the data to a corresponding twill, plain weave, satin, change weave, complex change weave or jacquard basic library according to the basic data of the fabric; calculating the length of the visible segment of the warp and weft surface yarns of the fabric according to a global general fabric representation mode; distributing the data of the length of the visual segment to a corresponding basic database of a change organization or jacquard according to the basic fabric data to automatically construct a database; the order is confirmed by the customer, and the order is directly printed at the corresponding pattern weaving position and is woven by a weaving machine with a digital printing function or a transfer printing function. The invention realizes accurate positioning printing and dyeing, reduces the practical amount of dye, and realizes the real synchronous weaving, on-line printing and dyeing process of the non-sewage discharge yarn dyed fabric.
Description
Technical Field
The invention relates to the field of textile printing and dyeing clothing, in particular to the technical field of digital printing, and particularly relates to a method for calculating the length of a visible section of warp and weft yarns of a fabric to a surface yarn.
Background
The yarn-dyed weaving industry is a traditional industry in the textile industry, relates to four major fields of spinning, weaving, dyeing and finishing, and is a deep processing industry which adopts various devices through multiple processes. The yarn-dyed weaving industry is mainly characterized in that the production process flow is long, yarn is dyed firstly, and then weaving and finishing are carried out; the technical span and the management span are large, the labor is more, and the management is complicated; the product belongs to a deeply processed product, and is required to be small in batch, various and fast to deliver, and the earning exchange of ton fiber is high; the product has rich expression techniques and is beneficial to the development of new varieties and new products. The yarn dyed fabric is generally divided into two modes of colored spun yarn and dyed yarn, and the yarn dyed fabric is woven by tatting, but the knitting machine can also be made into colored knitted fabric. The yarn-dyed jacquard fabric is obtained by dyeing yarns into different colors before weaving and then carrying out jacquard, and the fabric has obvious jacquard effect and rich and soft colors and is a high-grade product in jacquard. The yarn-dyed jacquard cloth is characterized in that patterns are directly woven on high-quality grey cloth by a weaving factory, so that the patterns cannot be washed off by water, and the defect that the printed cloth is washed off more times is overcome. Compared with printed and dyed cloth, the style of the fabric is unique, but the price is expensive. Because the texture effect and the color and luster style of the yarn-dyed product are not replaced by the common printing and dyeing products, the technical added value is higher. From the market at home and abroad, with the improvement of the consumption level, the proportion of the yarn-dyed fabric adopted is increased in the garment industry and the decoration industry, so that the yarn-dyed industry is still maintained in countries such as Japan, France, Italy and the like.
Yarn dyed is an industry with strong competitiveness, strengthens the development of new varieties and is urgent. The application of various novel fibers expands the infinite and wide field for yarn-dyed new products; the use of fancy yarns with various colors ensures that the yarn-dyed fabric has more charm; however, these new fiber raw materials and new structure yarns also present many problems for yarn-dyed weaving process, and need to put in great force to deal with the problem. Textile design is always a strong item in yarn-dyed industry, and the application of CAD enables designers to be as tiger and more attractive, so that the characteristics of small batch, multiple varieties and quick delivery of yarn-dyed products are brought into play more easily. The scientific and technological achievements in the related field inject new vitality into the yarn-dyed products, and the functional arrangement of various novel auxiliary agents endows the yarn-dyed products with new special functions, such as: the fabric is non-ironing, flame retardant, antibacterial, hydrophilic, antifouling, antistatic, ultraviolet resistant and the like, which provide sufficient conditions for the innovative development of the yarn-dyed industry.
At present, the annual production capacity of the yarn-dyed fabric industry in China is about 30 million meters, the actual annual output is about 20 million meters (wherein the denim is about 10 million meters), and the annual imported yarn-dyed fabric (including feeding and incoming material processing) is about 4 million meters. The high-end colored woven cloth is about 8 hundred million meters per year globally, and is mainly concentrated in China, wherein the China accounts for 35-40% of the global high-end colored woven cloth. The top yarn-dyed fabric is not more than 5000 million peaces per year globally, is mainly concentrated on a few manufacturers such as Italian Germany and the like, aims at about 30 hundred million meters per year of middle and low-end yarn-dyed fabric of fashionable dress and top-grade brand shirts in China, and is a middle and low-end product with 90 percent of the yarn-dyed fabric in China.
Compared with the printed and dyed cloth, the colored woven cloth has obvious advantages in color, stereoscopic impression and color fastness, but the process loss of yarn dyeing, weaving, after finishing and the like is large, the yield of the table is not as high as that of the grey cloth, so the input cost is high and the technical requirement is high. The yarn-dyed fabric accounts for only 7 percent of the world cotton spinning industry, the ratio of the printed and dyed fabric to the jeans is the highest, the requirements of consumers for clothes color and the like are more fashionable and changeable in the future, the development prospect of the yarn-dyed fabric is still large, and how to convert the white blank processing equipment into the design and color processing equipment is a technical barrier in front of the current textile man. The production of the yarn-dyed fabric has higher requirements on ecological environment protection, so the factors such as capital, technology, management and the like are required to be organically integrated, and stronger market competitiveness can be formed. The wide color-woven enterprises in China always have better technical foundations, and through years of development and technical accumulation, particularly in recent years, the further adjustment and optimization of industrial structures, the pace of technical upgrading and reconstruction are accelerated, the construction strength of characteristic industrial parks matched with local governments is increased, and particularly, the local governments carry out unified 'three wastes' treatment, so that more complete raw material supply and industrial processing chains are formed in the areas, and a solid foundation is laid for the healthy and sustainable development of the color-woven enterprises. Color-weaving enterprises in other areas in China develop slowly or are eliminated due to a plurality of adverse factors in the aspects of national industrial structure adjustment and control, the technology, the fund, the management and the like of the enterprises in the areas. The method is an important reason for limiting the development and balance of the yarn-dyed industry in China.
Many advanced yarn-dyed enterprises in China generally attach importance to the updating and innovation of yarn-dyed production technology and equipment, follow the trend of the advanced technology in the world, continuously increase the capital investment, and perform the introduction and the transformation of the advanced technology and the equipment, and a batch of yarn-dyed tap enterprises with advanced equipment and stronger research and development and production capacity, such as Shandong Tai, Jiangsu union issue, Guangdong overflow, Ningbo Yagor, Tianjin Tiange and the like, appear in the industry, almost all the enterprises are provided with shuttleless looms with advanced level in the world, generally adopt the advanced technologies of computer color measurement and matching, cone dyeing, warp beam dyeing, yarn-dyed CAD, automatic warp threading and the like, so that the research and development and production capacity of the new products are always in the status of first-class in China and even the leading state, which plays a good demonstration radiation effect for the yarn-dyed industry in local areas and even China, and plays a crucial role in integrally improving, the method is the root cause and the source of the intense international textile market competition of the colored woven products in China. But does not address the issue of social responsibility: water pollution problem.
In recent years, color-dyed products in China have color in the aspects of diversity and aesthetic property of color and color varieties, high-grade and comfortable quality and hand feeling, universality and rationality of raw material application, refinement and functionality of processing technology and the like, and the quality of the products is always stable, which is an important basis for the superior status of the color-dyed products in the international textile competition. However, compared with yarn-dyed products in developed countries, the phenomena of copy from the beginning, product homogenization, independent development, few innovative products and the like still exist, and the product quality and the grade of most yarn-dyed enterprises are still in low grade, which is one of the bottlenecks restricting the sustainable development of the whole yarn-dyed industry in China.
At present, developed countries in Europe and America continuously utilize non-tariff trade barrier measures such as anti-tipping, technical barrier, social responsibility certification and the like; some western developed countries are working on "re-industrialization" of the textile industry; secondly, the industrialized process is accelerated in emerging developing countries, particularly low-cost production countries of Asia such as Vietnam, Thailand, India and the like, so that the international textile market competition is intensified, the textile industry of China is at a disadvantage compared with the countries in terms of raw material and labor cost, the yarn-dyed industry does not form a larger scale in the countries, but the entry threshold is not high, and the future development trend of the yarn-dyed industry is not easy to see. Moreover, due to the adjustment of the policy of the domestic macro industry, the fluctuation of the price of raw materials, the remarkable improvement of the labor cost and the superposition of multiple adverse factors, the healthy development and the improvement of the economic benefit of the yarn-dyed industry in China are undoubtedly and directly influenced. How to crack is a serious problem!
Digital printing is the combination of science and technology and art, and the digital printing technology leads the trend of future product development. The digital ink-jet printing technology accelerates the revolution of the traditional printing industry and provides a technical means for producing high-quality and high-added-value printed textiles. The continuous improvement of the digital printing technology brings a brand new idea to the textile printing industry, and the advanced production principle and means thereof bring unprecedented development opportunities to the textile printing industry. In addition, along with the gradual popularization, the speed is continuously improved, and the material consumption cost is continuously reduced of digital printing, the popularization degree of digital printing products is higher and higher, and the digital printing becomes the inevitable trend of the development of the printing and dyeing industry in the future.
In the international market, the total printing output of textiles is about 270 hundred million meters globally, the digital printing output is about 5 hundred million meters and accounts for 1.8 percent of the total printing output, and the holding capacity of various types of digital printing machines is about 5000 machines, which are mainly distributed in Europe. Europe is the largest demand and production area for digital printing products, and digital printing has penetrated into various fields of textiles such as design, clothing, home textiles, automobile decoration, advertisement, personalized customization, online stores, and the like. There is data showing that the global printing industry annual output in 2012 is about 300 million meters, annual output value is about 1650 million dollars, and annual average growth rate is about 1-2%, while digital printing is growing at 23% per year in 2009 to 2012 and is still accelerating according to the latest SmithersPira research report "exhibition in 2017 of digital printing". In europe, where digital printing is the fastest growing, the digital printing output in 2013 has accounted for 40% of the total printing output all year round.
In the aspect of domestic markets, China has the largest printing industry all over the world, and statistics shows that the total printing output of enterprises with the scale of more than 2009 in China is 100 hundred million meters, which is strong for l/3 of the world, but the digital printing output of China is only about 0.4 hundred million meters, the holding capacity of various types of digital printing machines is close to 400, and the digital printing machines are not matched with the status of China as a printing industry in large countries in general.
DionyhiaPatrinou women, DionyiaPatrinou, the strategic market high-level manager, Digitalturning information division, WTIN group, UK: it is expected that the yield of digital printing in China can achieve approximately 150% of growth rate from 2014 to 2019, and 7.2% of market proportion can be achieved in 2019. In addition, the vice president DaveYoung of the MS group also shows that the compound annual growth rate of the five-year digital textile printing output is expected to exceed 16 percent in the future.
At present, several enterprises in China are producing and selling digital printing equipment, and other enterprises are proxying similar products abroad. Among them, domestic enterprises represented by Hangzhou Honghua digital corporation account for over 80% of the market share in China, and Guangdong hope that high-speed Single-Pass digital printing machines are also introduced and delivered to customers.
And the digital printing equipment is mainly applied to thick fabrics such as carpets, and is mainly developed and produced by Zimmer and Honghua digital companies of Austria globally. The digital jet printing equipment is large in size and high in unit price, and the production and sales volume of the digital jet printing equipment keeps stable increase all the time. On the day of the year 2007, which is mainly Zimmer of Austria, the first carpet jet printing equipment in China is introduced with the year 2007 by Honghua digital company, and rapidly occupies most market shares in China with good cost performance.
In conclusion, the share of digital ink-jet printing of textiles in printing production is increasing year by year, and with the increase of short-flow production and instant delivery demand, digital ink-jet printing provides the most economical solution, and the technology will certainly become the mainstream technology of textile printing production in the world.
Digital printing is more and more popular among printing and dyeing enterprises and consumers by virtue of the advantages of high precision, diversification, energy conservation, environmental protection and the like. The forum will explore how to open the huge development potential of digital printing in industrial 4.0 environment in short-cycle, small-batch, on-demand production mode under the personalized development trend of digital printing.
The Jie and the like are based on the textile fabric cleaning production technology, and the discussion is carried out on the yarn selection, the textile design, the production process flow and the process technical conditions. In order to meet the requirements of the current clean textile production technology with low carbon, short flow and high efficiency, a corresponding production scheme is established, and sizing and desizing processes are omitted by preferably singeing mercerized cotton threads; by adopting the post-treatment process of ReactEVO reactive dye dyeing, 50% of water can be saved, 18.2% of time can be saved, and 60% of energy consumption can be saved; the weaving and finishing process and the after-finishing process are optimized, the strength, the color fastness to washing and the color fastness to rubbing of the fabric are ensured to meet the requirements of high-grade shirt clothes, short-flow, low-carbon and clean production is realized, and the production efficiency is improved. The traditional yarn-dyed fabric can not be applied to the digital printing technology all the time due to technical restriction. The countries and enterprises carry out a great deal of investment in the aspects of equipment investment and pollution control, but a great deal of sewage exists, and a great deal of printing and dyeing enterprises are forced to close the doors. The economic loss is huge and the problem of serious pollution is not solved.
Disclosure of Invention
Aiming at the technical problem of serious pollution of the traditional yarn-dyed fabric, the invention provides a method for calculating the length of a visible section of a warp yarn and a weft yarn of the fabric to a surface yarn, which introduces a digital printing technology into the yarn-dyed industry and is used for an automatic picture adjusting method for the on-line printing and dyeing of a whole width piece of yarn to solve the dilemma of the application of the digital printing technology in the yarn-dyed industry.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a method for calculating the length of a visible section of warp and weft surface yarns of a fabric comprises the following steps:
the method comprises the following steps: obtaining basic fabric data needed by a customer through bar code scanning, or obtaining the basic fabric data needed by the customer through voice, characters or images;
step two: distributing the data to a corresponding twill, plain weave, satin, change weave, complex change weave or jacquard basic library according to the basic data of the fabric;
step three: according to a global general fabric representation mode: a B/C D E/F G H L M N, calculating the length of the visible segment of the yarn on the warp and weft surfaces of the fabric; wherein A is the fabric type, B/C represents the component ratio of the fabric, D E represents the yarn count, F G represents the warp and weft density, H represents the width, and L represents the structural distribution of the sheet; m is a texture type, and N is warp and weft elasticity;
step four: distributing the data of the length of the visual segment to corresponding twill, plain weave, satin weave, change weave, complex change weave or jacquard basic libraries according to the basic fabric data to automatically construct a database X;
step five: after the customer pattern is obtained, cutting the customer pattern picture according to the data of the database X, obtaining a pattern paper pattern through digital printing and jet printing, obtaining a piece of yarn pattern through transfer printing, obtaining a rice pattern or a hand weave pattern through weaving, and confirming an order by a customer;
step six: after the order is confirmed, directly weaving the order by a weaving machine with a digital printing function or a transfer printing function;
step seven: and correcting the length parameter of the visible segment according to the yarn buckling wave height or the actual yarn consumption for fabric yarn removal, and storing the length parameter in a database X.
The method for calculating the length of the visual segment comprises the following steps: when the unit is represented by English system, the space width occupied by each weft yarn in the unit circulation is =2.54/G, the space width occupied by each warp yarn is =2.54/F, the buckling wave problem of the warp yarns and the warp yarns is not considered in each circulation unit by combining the fineness of the warp yarns and the weft yarns and the corresponding space diameter I and J values of the actually measured value, and the minimum surface visible yarn length is respectively: plain weave warp =2 × 2.54/F-J, plain weave weft =2 × 2.54/G-I; twill 2/1: twill warp =3 × 2.54/F-J, twill weft = I; twill 2/2: twill warp =4 × 2.54/F-2 × J, twill weft =2 × I; twill 3/1: twill warp =4 × 2.54/F-J, twill weft = I; satin 5/1 satin warp =6 × 2.54/F-J, satin weft = I; over 7 satins can not see weft yarn basically, all visible warps are warp yarns, and therefore the length of the visible segment is obtained; and finally, correcting parameters of the length of the visible segment according to the yarn buckling wave height.
Considering the weaving shrinkage 0.1 and the height of the buckling wave, the method for calculating the length of the visible segment comprises the following steps: when the unit is represented by English system, the space width occupied by each weft yarn in the unit circulation is =2.54/G, the space width occupied by each warp yarn is =2.54/F, the buckling wave problem of the warp yarns and the warp yarns is considered in each circulation unit by combining the fineness of the warp yarns and the weft yarns and the corresponding space diameter I and J values of the actual measured value, and the minimum surface visible yarn length is respectively: plain weave warp yarn = (2 × 2.54/F-J) × 1.01, plain weave weft yarn = (2 × 2.54/G-I) × 1.01, twill 2/1: twill warp yarn = (3 × 2.54/F-J) × 1.01, twill weft yarn = I × 1.01; twill 2/2: twill warp yarn = (4 × 2.54/F-2 × J) × 1.01, twill weft yarn =2 × I1.01; twill 3/1: twill warp yarn = (4 × 2.54/F-J) × 1.01, twill weft yarn = I × 1.01; satin 5/1 satin warp yarn = (6 × 2.54/F-J) × 1.01, satin weft yarn = I × 1.01; over 7 satins can not see weft yarn basically, all visible warps are warp yarns, and therefore the length of the visible segment is obtained; and finally, correcting the length parameters of the visible segment according to the actual yarn consumption for fabric yarn removal.
The invention has the beneficial effects that: when the method is applied to the yarn-dyed fabric digital printing technology, the accurate area positioning of the length of the visible segment can be provided, namely the accurate area positioning of the warp yarns which must be printed can be provided, meanwhile, the requirement of the minimum printing area can be provided, the ink consumption is reduced to the minimum consumption, and the economic benefit of an enterprise is improved; the method can also be applied to knitted fabrics, and the calculation is carried out according to the length of the emerging arc section and the length of the dry section of the knitted fabric coil. The invention can realize accurate positioning printing and dyeing, reduce the practical amount of dye and reduce the printing and dyeing cost; the real synchronous weaving, on-line printing and dyeing process of the yarn-dyed fabric without sewage discharge is realized.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
A method for calculating the length of a visible section of warp and weft surface yarns of a fabric comprises the following steps:
the method comprises the following steps: obtaining basic fabric data needed by a customer through bar code scanning, or obtaining the basic fabric data needed by the customer through voice, characters or images;
step two: distributing the data to a corresponding twill, plain weave, satin, change weave, complex change weave or jacquard basic library according to the basic data of the fabric;
step three: according to a global general fabric representation mode: a B/C D E/F G H L M N, calculating the length of the visible segment of the yarn on the warp and weft surfaces of the fabric; wherein A is the fabric type, B/C represents the component ratio of the fabric, D E represents the yarn count, F G represents the warp and weft density, H represents the width, and L represents the structural distribution of the sheet; m is a texture type, and N is warp and weft elasticity. Examples are: T/C65/3521 21/108 5863 "3/1Z warp and weft resilience: a refers to polyester cotton fabric, and the value is T/C; the value of B/C is 65/35, which represents the mixture ratio of the components; d × E is 21 × 21, representing the yarn count; f, G takes the value 108, 58 and is the warp and weft density; h is 63 ' is the width, and the width of 63 ' is 58/59 ' after the grey cloth is made into the finished product; the value of L3/1 represents four tablets above and below 3; the value Z of M represents a right diagonal twill; n is warp and weft elasticity.
Step four: and distributing the data of the length of the visual segment to corresponding twill, plain weave, satin weave, change weave, complex change weave or jacquard basic libraries according to the basic fabric data to automatically construct a database X for later calling.
Step five: after the customer pattern is obtained, cutting the customer pattern picture according to the data of the database X, obtaining a pattern paper pattern through digital printing and jet printing, obtaining a piece of yarn pattern through transfer printing, obtaining a rice pattern or a hand weave pattern through weaving, and confirming an order by a customer;
step six: after the order is confirmed, directly weaving the order by a weaving machine with a digital printing function or a transfer printing function;
the digital printing processing of the novel pollution-free emission yarn-dyed fabric is realized in the weaving process.
Step seven: and correcting the length parameter of the visible segment according to the yarn buckling wave height or the actual yarn consumption for fabric yarn removal, and storing the length parameter in a database X.
The database X provides basis for the development of products.
The method for calculating the length of the visual segment comprises the following steps: when the unit is represented by English system, the space width occupied by each weft yarn in the unit circulation is =2.54/G, the space width occupied by each warp yarn is =2.54/F, the buckling wave problem of the warp yarns and the warp yarns is not considered in each circulation unit by combining the fineness of the warp yarns and the weft yarns and the corresponding space diameter I and J values of the actually measured value, and the minimum surface visible yarn length is respectively: plain weave warp =2 × 2.54/F-J, plain weave weft =2 × 2.54/G-I; twill 2/1: twill warp =3 × 2.54/F-J, twill weft = I; twill 2/2: twill warp =4 × 2.54/F-2 × J, twill weft =2 × I; twill 3/1: twill warp =4 × 2.54/F-J, twill weft = I; satin 5/1 satin warp =6 × 2.54/F-J, satin weft = I; over 7 satins can not see weft yarn basically, all visible warps are warp yarns, and therefore the length of the visible segment is obtained; and finally, correcting parameters of the length of the visible segment according to the yarn buckling wave height.
Considering the weaving shrinkage 0.1 and the height of the buckling wave, the method for calculating the length of the visible segment comprises the following steps: when the unit is represented by English system, the space width occupied by each weft yarn in the unit circulation is =2.54/G, the space width occupied by each warp yarn is =2.54/F, the buckling wave problem of the warp yarns and the warp yarns is considered in each circulation unit by combining the fineness of the warp yarns and the weft yarns and the corresponding space diameter I and J values of the actual measured value, and the minimum surface visible yarn length is respectively: plain weave warp yarn = (2 × 2.54/F-J) × 1.01, plain weave weft yarn = (2 × 2.54/G-I) × 1.01, twill 2/1: twill warp yarn = (3 × 2.54/F-J) × 1.01, twill weft yarn = I × 1.01; twill 2/2: twill warp yarn = (4 × 2.54/F-2 × J) × 1.01, twill weft yarn =2 × I1.01; twill 3/1: twill warp yarn = (4 × 2.54/F-J) × 1.01, twill weft yarn = I × 1.01; satin 5/1 satin warp yarn = (6 × 2.54/F-J) × 1.01, satin weft yarn = I × 1.01; over 7 satins can not see weft yarn basically, all visible warps are warp yarns, and therefore the length of the visible segment is obtained; and finally, correcting the length parameters of the visible segment according to the actual yarn consumption for fabric yarn removal.
Specific examples are as follows:
obtaining basic fabric data JT/C65/3545 45110 7647' 2/1 twills required by a customer through bar code scanning; distributing the data to corresponding twill libraries according to the basic fabric data; according to a global general fabric representation mode: ab C D EF G H were calculated for the visible lengths of the warp and weft face yarns of the fabric. When expressed in english, the space width occupied by each warp yarn is =2.54/110=0.22 mm, the space width occupied by each weft yarn is =2.54/76 =0.32 mm, and by combining the fineness of the warp and weft yarns and the actual measured value, and comparing the corresponding space diameters to be 0.25 and 0.25, if the buckling wave problem of the warp and weft yarns is considered in each circulation unit, the minimum apparent yarn length is respectively: twill 2/1: twill warp yarn = (3 × 2.54/110-J) × 1.01= (3 × 0.22-0.25) × 1.01= 0.4141, twill weft yarn = I × 1.01=0.25 × 1.01= 0.2525; the obtained data of the lengths of various visual segments are automatically constructed into a database X for later calling and correction. And (3) segmenting the customer pattern picture according to the data of the database X, obtaining a pattern paper sample through digital printing and jet printing, obtaining a piece of yarn pattern sample through transfer printing, obtaining a rice sample or a hand-woven sample after weaving, and confirming an order by a customer. After the order is confirmed, the order is directly woven by a weaving machine with a digital printing function or a transfer printing function, and the digital printing processing of the novel pollution-free emission yarn-dyed fabric is realized.
The same technique of the invention can be applied to knitting yarn dyed fabric, and the calculation is carried out according to the condition of the length of the emerging arc section and the length of the dry section of the knitted fabric coil, and comprises the following steps: warp knitting, weft knitting and crocheting. The same technology of the invention can be applied to the pattern and design weaving of jacquard fabrics, directly improves the efficiency of the prior multi-warp-beam and multi-layer warp jacquard, reduces the difficulty and complexity of the preparation process of dyed yarns, reduces the cost and improves the effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A method for calculating the length of a visible section of a warp yarn and a weft yarn of a fabric to a surface yarn is characterized by comprising the following steps:
the method comprises the following steps: obtaining basic fabric data needed by a customer through bar code scanning, or obtaining the basic fabric data needed by the customer through voice, characters or images;
step two: distributing the data to a corresponding twill, plain weave, satin, change weave, complex change weave or jacquard basic library according to the basic data of the fabric;
step three: according to a global general fabric representation mode: a B/C D E/F G H L M N, calculating the length of the visible segment of the yarn on the warp and weft surfaces of the fabric; wherein A is the fabric type, B/C represents the component ratio of the fabric, D E represents the yarn count, F G represents the warp and weft density, H represents the width, and L represents the structural distribution of the sheet; m is a texture type, and N is warp and weft elasticity;
step four: distributing the data of the length of the visual segment to corresponding twill, plain weave, satin weave, change weave, complex change weave or jacquard basic libraries according to the basic fabric data to automatically construct a database X;
step five: after the customer pattern is obtained, cutting the customer pattern picture according to the data of the database X, obtaining a pattern paper pattern through digital printing and jet printing, obtaining a piece of yarn pattern through transfer printing, obtaining a rice pattern or a hand weave pattern through weaving, and confirming an order by a customer;
step six: after the order is confirmed, directly weaving the order by a weaving machine with a digital printing function or a transfer printing function;
step seven: correcting the length parameter of the visible segment according to the yarn buckling wave height or the actual yarn quantity used for fabric yarn removal, and storing the length parameter in a database X;
the method for calculating the length of the visual segment comprises the following steps: when the unit is represented by English system, the space width occupied by each weft yarn in the unit circulation is =2.54/G, the space width occupied by each warp yarn is =2.54/F, the buckling wave problem of the warp yarns and the warp yarns is not considered in each circulation unit by combining the fineness of the warp yarns and the weft yarns and the corresponding space diameter I and J values of the actually measured value, and the minimum surface visible yarn length is respectively: plain weave warp =2 × 2.54/F-J, plain weave weft =2 × 2.54/G-I; twill 2/1: twill warp =3 × 2.54/F-J, twill weft = I; twill 2/2: twill warp =4 × 2.54/F-2 × J, twill weft =2 × I; twill 3/1: twill warp =4 × 2.54/F-J, twill weft = I; satin 5/1 satin warp =6 × 2.54/F-J, satin weft = I; over 7 satins of the warp can not see weft yarns, and all visible warp yarns are warp yarns, so that the length of the visible segment is obtained; and finally, correcting parameters of the length of the visible segment according to the yarn buckling wave height.
2. The method for calculating the visible section length of the warp and weft yarns of the fabric according to claim 1, wherein the method for calculating the visible section length is based on consideration of weaving shrinkage 0.1 and buckling wave height: when the unit is represented by English system, the space width occupied by each weft yarn in the unit circulation is =2.54/G, the space width occupied by each warp yarn is =2.54/F, the buckling wave problem of the warp yarns and the warp yarns is considered in each circulation unit by combining the fineness of the warp yarns and the weft yarns and the corresponding space diameter I and J values of the actual measured value, and the minimum surface visible yarn length is respectively: plain weave warp yarn = (2 × 2.54/F-J) × 1.01, plain weave weft yarn = (2 × 2.54/G-I) × 1.01, twill 2/1: twill warp yarn = (3 × 2.54/F-J) × 1.01, twill weft yarn = I × 1.01; twill 2/2: twill warp yarn = (4 × 2.54/F-2 × J) × 1.01, twill weft yarn =2 × I1.01; twill 3/1: twill warp yarn = (4 × 2.54/F-J) × 1.01, twill weft yarn = I × 1.01; satin 5/1 satin warp yarn = (6 × 2.54/F-J) × 1.01, satin weft yarn = I × 1.01; over 7 satins of the warp can not see weft yarns, and all visible warp yarns are warp yarns, so that the length of the visible segment is obtained; and finally, correcting the length parameters of the visible segment according to the actual yarn consumption for fabric yarn removal.
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