RU2519921C1 - Method of production of fabric of check weave - Google Patents

Abstract

FIELD: textiles, paper.

SUBSTANCE: on fabric surface visual effect of several volume bands is made by changing the width of the individual checkers in the rapport of the original check weave on one of the systems of threads. To do this, one of the systems of threads is taken as active, the width of the initial checkers is specified on the threads of both systems and the number of their pairs on the active system of the threads, the basic weave in the checkers, the rapports of weave are counted, the model of the initial check weave is formed, the type of the approximating curve is set for resizing the checkers along the passive system of threads, the imitation of deformation of checker pattern on fabric is performed, new coordinates of change of checker colour are defined, and the model of the resulting pattern is redrawn, the rapport of the deformed check weave is created on the resulting coordinate grid.

EFFECT: increase in the range of fabrics by obtaining on their surface the render effect of one or several longitudinal or transverse volume bands.

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Description

The invention relates to the production of textile materials and for the manufacture of drafts weaving, belonging to the class of small-net, produced on weaving machines equipped with a carriage shedding mechanism.

A known method of producing fabrics of diagonal weaves, creating on the surface of the fabric single-plane embossed longitudinal stripes of various widths, changing their direction along the width of the fabric [Patent 2262558 of the Russian Federation, IPC ⁷ D03D 23/00. A method of obtaining fabrics of diagonal weaves / Maletskaya S.V., Maletsky V.V .; applicant and patent holder State educational institution of higher professional education “Ulyanovsk State Technical University”, No. 2004114388/12; declared 05/11/2004; publ. 10/20/2005. - 3 p.: 5 ill.]. The longitudinal strips of different widths are obtained by repeatedly changing the sign of the vertical shift of the ceilings to the opposite after a given number of warp threads. As a basic weave, a previously obtained diagonal weave is used.

The disadvantage of the analogue method is the inability to obtain the visual effect of volumetric stripes on the surface of the fabric.

The prototype adopted a method of producing checkerboard fabrics, creating a pattern in the form of squares resembling a chessboard on the surface of the fabric, in one square the front side of any weave (twill, satin) is built, and in the other square adjacent to the first, the inside of this is built weaving [Granovsky TS The structure and analysis of tissue. - M .: Legprombytizdat, 1985, S. 60-61]. On the borders of squares - cells - against the main overlapping weft should be located, and against weft - the main. In total, four squares are placed in the weave repeat. Repeats of basic weaves are repeated in squares one or more times.

The disadvantage of the prototype method is the inability to obtain on the surface of the fabric the visual effect of volumetric stripes.

The technical result of the invention is the expansion of the assortment of fabrics by obtaining on their surface a visual effect of the same or different volume strips of width.

The specified technical result is achieved by the fact that in the method of producing checkered weave fabrics, which consists in obtaining a pattern in the form of squares resembling a chessboard, by filling diagonally squares with the front side of the base weave, most often, the main class, two other squares adjacent to them , on the wrong side of the base weave, according to the invention, one of the yarn systems (warp or weft) is taken as active; form one or several volume strips of various widths located along the active system of threads in the weave repeat, for which they take: the width of the original checkers s_w in the threads of the active system and the number of pairs n_Sh.act. at repeat pattern for active thread system, checker width h_w in the threads in the pattern of weaving according to the passive system, the threads of one system, for example, warp, are lighter, the threads of another system (weft) are darker, the base weave in checkers; weave repeat patterns:

$$R_{\mathrm{but}\mathrm{to}t.}=2s_w\cdot n_{w.\mathrm{but}\mathrm{to}t.};\left(\mathrm{one}\right)$$

$$R_{P\mathrm{but}\mathrm{from}.}=2h_w,\left(2\right)$$

form a model of the original checker weave; form a field with moving markers: set the number of control points, their coordinates, set markers along a line parallel to the passive system of threads; find the coordinates (number of threads of the active system) of changing the color of the checkers along an axis parallel to the passive system of threads [n]: 1, s _w +1, 2s _w +1, 3s _w +1, ... , R _act. ; on the rapport plane, a basic checker weave is built; on the weave fragments corresponding to the dark checkers, the basic weave is replaced with negative: determine the coordinates of the main floors and replace the overlap with weft, determine the coordinates of the weft overlap and replace them with the main; moving the markers along the active system of threads, set the approximating curve to change the size of the pieces along the passive system of threads; they simulate the deformation of the checker pattern on the fabric: determine the coordinates of the centers of the markers, perform piecewise polynomial approximation of the curves connecting the markers, calculate the ordinates of the approximating curve for each thread of the active system of the deformed weave, redraw the graphs of the calculated curves, determine the average value of the ordinates of the approximation curve, for each thread active system of deformed checker weave determine the number of the corresponding thread of the original checker weave, about assign new coordinates (serial numbers of threads of the active system) to change the color of checkers [nn] and redraw the model of the resulting pattern; the rapport of the deformed checkered weave is built on the obtained coordinate grid.

The specified technical result - the creation of new checker weaves to obtain the visual effect of volumetric stripes on the surface of the fabric - is achieved by changing the width of individual checkers in the rapport of the original checker weave along one of the yarn systems.

The invention is illustrated by drawings, where

- figure 1 shows a drawing of the original checker weave and the field with movable markers (figure 1-a); the original checker weave (Fig.1-b) and its layout (Fig.1-c);

- figure 2 presents a graph of the law of changing the size of the checkers across the width of the figure and the model of the resulting pattern (figure 2-a), a rapport of the curved checker (figure 2-b) and a model of checker weaving with the visual effect of volumetric longitudinal stripes (figure 2 -at);

- figure 3-a shows an example of the construction of checker weaves with the effect of volumetric longitudinal stripes, figure 3-b and 3-c presents the rapport and layout of the checker weave with the visual effect of three volumetric longitudinal stripes;

- figure 4-a shows an example of the construction of checker weaves with the effect of volumetric transverse stripes, figure 4-b and 4-c presents the rapport and layout of the checker weave with the visual effect of two volumetric transverse stripes.

An example of the practical implementation of the method.

One of the filament systems, for example, warp, is taken as active. Take the width of the checkers s _W , for example s _W = 15 warp threads, and the number of pairs n _Sh.act. in a rapport based on weaving, for example n _sh.act. = 22; take the height of the checkers h _w in the rapport on the weft weave, for example h _w = 40 weft threads. The warp threads are accepted, for example, white, the weft threads are dark, the base weave in checkers is atlas 5/3. By the formulas (1) and (2), the weave repeat patterns are determined: R _o = 2 · 15 · 22 = 660 threads; R _y = 2 · 40 = 80 threads. Form a model of the original checker weave, for clarity, weft shows several (in the example of six) rapports (Fig.1-a). Form a field with moving markers: set the number of control points, for example 20, their coordinates, set markers along the weft (Fig.1-a). The coordinates on the abscissa axis (the number of warp threads) determine the color of the checkers [n]: 1, 16, 31, 46, 61, 76, 91, 106, ..., 631, 646, 660.

The initial checker weave is built: the entire rapport plane is filled with the atlas 5/3 base weave, on the weave fragments corresponding to the dark drafts, the satin weave is replaced with satin: determine the coordinates of the main overlaps and replace the weft overlays; determine the coordinates of the weft floors and replace them with the main ones (Fig.1-b). Figure 1-c shows the layout of the original checker weave.

Moving the markers vertically, set the type of the approximating curve for changing the size of the checkers along the width of the picture. An imitation of deformation of the checker pattern on the fabric is performed. To simulate volumetric longitudinal bands, a parabolic law of changing the size of the checkers along the width of the figure is adopted (Fig.2-a); find the coordinates of the centers of the markers, perform piecewise polynomial approximation of the curves connecting the markers. Below are the obtained equations of approximating polynomials for each of the nineteen sections of the curve:

1) y = 0.0001 x ³ + 0.0313 x ² -2.755 x + 149.6901;

2) y = -0.0001 x ³ + 0.0157 x ² -1.1103 x + 85.2273;

3) y = 0.0006 x ² -0.556 x + 59.814;

4) y = 0.004 x ² -0.3961 x + 42.4587;

5) y = 0.0002 x ² -0.2503 x + 31.9215;

6) y = 0.0008 x ² -0.2167 x + 23.8636;

7) y = 0.0018 x ² -0.1261 x + 17.6653;

8) y = 0.0012 x ² -0.0229 x + 15.186;

9) y = 0.0003 x ² -0.0064 x + 15.186;

10) y = 0.0001 x ² -0.0023 x + 15.186;

11) y = 0.0001 x ² -0.0027 x + 15.186;

12) y = 0.0004 x ² -0.0084 x + 15.186;

13) y = 0.0015 · x ² + 0.0304 · x + 15.186;

14) y = 0.0004 x ² + 0.0978 x + 17.6653;

15) y = 0.0015 x ² + 0.1628 x + 22.0041;

16) y = 0.002 x ² + 0.2808 x + 29.4421;

17) y = 0.0023 x ² + 0.4308 x + 41.8388;

18) y = 0.0001 x ³ + 0.001 x ² + 0.5462 x + 59.1942;

19) y = 0.0001 x ³ + 0.0157 x ² + 1.1152 x + 84.6074.

The ordinates of the approximating curve for each main strand of the deformed weave are calculated and the graphs of the calculated curves are redrawn (Fig. 2-a). The average ordinate value is determined, for each main strand of deformed checker weave, the number of the corresponding thread of the original checker weave is determined - the new coordinates along the abscissa axis (serial numbers of the main threads) change the color of the checkers [nn]: 1, 5, 10, 15, 20, 25, 32, 38, 46, 54, 63, 72, 83, 94, 108, 123, 140, 160, 184, 214, 251, 290, 328, 367, 405, 443, 474, 501, 522, 540, 555, 569, 580, 591, 600, 609, 617, 624, 631, 637, 642, 648, 652, 657, 660. The model of the resulting pattern is redrawn (Fig. 2-a). Rapport of the deformed checkered weave is built on the obtained coordinate grid (Fig.2-b). Figure 2-c shows a checkerboard layout with the visual effect of volumetric longitudinal stripes.

Figure 3-a shows a second example of the construction of checker weaves with the effect of volumetric longitudinal stripes. Figures 3-b and 3-c show a rapport and a checkerboard layout with the visual effect of three volumetric longitudinal stripes in the rapport.

In both weaves (Figs. 2-b and 3-b), the number of mismatched yarns is 10, the parting of the main threads in the remise is shown in the figure with the parting repeat equal to the repeat weaving on the base - 660 threads.

Obtaining a fabric pattern with the effect of volumetric transverse stripes on the basis of checker weaves is similar. Figure 4-a shows an example of the construction of a checker weave with the effect of volumetric transverse stripes. Figures 4-b and 4-c show a rapport and a checkerboard layout with the visual effect of two volumetric transverse stripes in the rapport.

Claims (1)

A method of producing checkered weave fabrics, which consists in obtaining a pattern in the form of squares resembling a chessboard by filling diagonally squares with the front side of the base weave, most often, the main class, two other squares adjacent to them with the wrong side of the base weave, characterized in that form one or several volume strips of various widths in the weaving pattern, for which one of the thread systems is adopted, for example, the base is taken as the active width similar checkers s _sh in the filaments and the number of couples n _sho in a repeat pattern in the warp weave, checkers h _sh height yarns in a repeat pattern weft weave, warp yarns lighter, weft yarns - darker base weave in checkers, calculated repeats weave:
$$R_o=2s_{sh}\cdot n_{sho};\left(\mathrm{one}\right)$$

$$R_y=2h_{sh},\left(2\right)$$

form the pattern of the original checker weave; for clarity, a duck shows several rapports; form a field with moving markers, set the number of control points, their coordinates, set abscissas for interpolation; set markers along the line; coordinates on the abscissa axis of the color change of the checkers are stored in a one-dimensional array [n]: 1, s _sh +1, 2s _sh +1, 3s _sh + 1, ..., R _o ; build a basic checker weave; on fragments of weaving corresponding to dark checkers filled with a weft, replace the main weave with a weft; determine the coordinates of the main floors and replace the floors with weft, determine the coordinates of the weft floors and replace them with the main ones; moving the markers horizontally, set the type of the approximating curve for changing the size of the checkers along the width of the picture; imitate the deformation of the checker pattern on the fabric; determine the coordinates of the centers of the markers, perform piecewise polynomial approximation of the curves connecting the markers; the ordinates of the approximating curve are calculated for each warped warp yarn; redraw the graphs of the calculated curves; determine the average ordinate of the approximation curve; for each main thread of a curved checker weave, determine the number of the corresponding thread of the original checker weave; display the model of the resulting pattern; determine the new coordinates on the abscissa axis (serial numbers of the main threads) of the color change of the checkers and redraw the model of the resulting pattern; a rapport of a curved checkered weave is built on the obtained coordinate grid.

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