Method for manufacture of knitted fabric

FIELD: production of knitted articles.

SUBSTANCE: method involves setting structure of knitted fabric in the form of repeat pattern consisting of alternating standard elements; converting set structure into machine language code and knitting knitted fabric on programmable machine. Standard elements used by said method are portions of thread with constant properties. Location of standard elements in repeat pattern is set by generalized coordinates thereof, said generalized coordinates being increments of geometric coordinates on thread portion and relative (local) geometric coordinates of leading and tailing parts of said portion.

EFFECT: improved physico-mechanical properties of thread portion.

2 dwg

 

The invention relates to the technology of knitting production, namely the automated processes of acquiring Jersey the specified structure.

A known method of manufacturing knitted fabrics on dvukhfotonnykh flat knitting machines, including operations job patterns knitted in a pattern of sequential sample elements, convert the given patterns in native code and vyazaniya knitted on a machine with software management [Shalov I.I., Cudrefin L.A. Basics of designing knitwear production with CAD elements: Textbook. for universities. - 2nd ed., Rev. and ext. - M: Legprombytizdat, 1989, .38-44], in which the model elements specify the frame loop, sketch, drawing for the front and inside of the Jersey. The known method cannot provide the hinge structure of complex-shaped products, with development on flat knitting machines are used sbivki and gain loops, portions of tubular knitting, weave with intarsia and complex drawings, including jacquard weaves.

A known method of manufacturing knitted weft weaves, including operations job patterns knitted in a pattern of sequential sample elements (basic matrix patterns), transformation, given the structure of the URS in native code and vyazaniya knitted on a machine with software management [Shalov I.I., Cudrefin L.A. Basics of designing knitwear production with CAD elements: Textbook. for universities. - 2nd ed., Rev. and ext. - M: Legprombytizdat, 1989, p.55-60], in which the model elements specify the frame loop, drawing, sketch, moved the loop, transferred the sketch, reset loop. While the typical elements of rapport represent one or more rectangular matrices containing information about the presence or absence of a pattern of such elements. This is done with the aim of further automated determination of the sequence of operations knitting (machine code) and technological characteristics of knitwear, namely the consumption of raw materials, the surface density, etc. by known formulas for each model element.

The known method provides for receiving the looped weft knitting patterns for knitted fabrics and contains a limited set of model elements and, consequently, knitted structures derived from these basic elements. So, if the set of model elements missing element "extended loop", it is impossible to specify the structure of the eye weave, containing loops of the increased size. Similarly, open weave the necessary defines a model element transferred loop". The main requirement for many typical elements of assessessment describe the structure of the largest number of subclasses Jersey found practical application.

With the aim of expanding the technological capabilities of manufacturing knitted fabrics known and new structures must be included in the set of model elements additional (new) elements, reflecting the characteristics of such structures, which leads to change (complexity) conversion of the specified structure in native code, the introduction of additional calculation formulas determine the technological characteristics of new Jersey for model elements.

The technical result of the invention is to expand the technological capabilities of the method of manufacturing knitted fabrics (the ability to describe the structure of the largest number of subclasses Jersey), which by new conditions perform a set operation patterns knitted in a pattern of sequential sample elements could produce a warp knitting, and knit that combines elements of weft and warp knitted fabrics.

This technical result is achieved in that in the method of manufacturing knitted fabrics, including operations job patterns knitted in a pattern of sequential sample elements, convert the given patterns in native code and vyazaniya knitted on a machine with software control, as the model is a separate estimate, ask lots of threads with constant properties, and the location of the standard elements in the rapport ask their generalized coordinates, with generalized coordinates represent the increment of the geometric coordinates on the plot threads and relative (local) geometric coordinates at the beginning and end of the segment and the physical-mechanical parameters of this section.

Use as a standard element of the plot threads with constant properties (cut a straight line, arc, circle or ellipse), which is part of the model element, forming a finished knitted structure (loop, outline, drawing), allows to describe arbitrary patterns of Jersey after an appropriate partitioning of threads, which established the rapport of this structure, the new model elements.

Figure 1 shows a typical structure elements of Jersey double polluting, the characteristic point of the hinge structure (S, L, R), positive direction for the generalized coordinates (in this case geometrical coordinates: D1- the offset point of the thread across the knitted fabric, D2- the offset point of the thread along the knitted fabric, D3- the offset point of the thread on the thickness of the knitted fabric) for two rapporteurship threads 1 and 2. The unit of measurement for D1step width (step buttonhole), for D2step length (height buttonhole row), for D3- conditions the Naya value, denoting the transition from the wrong side of the fabric on the front as +1, the transition from the front side to back as -1, the absence of transition - 0. For a single Jersey coordinate of D3can be absent.

Fourth generalized coordinate D4position (offset) of the point of the thread within one stitch of the column and one stitch of the row. The left end of the needle arc loop is marked with the letter L (from the English. Left), right - R (from the English. Right), and the Central portion of the looped bar - (from the English. Center). The coordinate value of D4for points 3, 7, 12 thread 1 is equal to L, for points 2, 6, 9 - R, for points 1, 4, 5, 8, 10, 11, 13 - C. To set the location of the model element will use increments of generalized coordinates within the same element.

Thread 1. The first model element is a straight line segment thread 1-2 - wand loop. Moving from point 1 to point 2 does not change the generalized coordinates D1. The entire element coding is within one stitch of the column. Real same horizontal coordinate of the point 2 is different from that at point 1 due to the tilt wand loop and can easily be calculated if necessary. Will take into account the actual values of the structure parameters of knitted fabrics, such as hinge step, the height of the hinge line, the diameter of the thread, the needle radius of the arc constant draganovo sample. The significance of the generalized coordinates D1in this case characterizes the essence of the hinge structure, its topology. So, for section 1-2 the value of D1=0. When moving from point 1 to point 2, the coordinate of D2changes to the value of the height of the hinge line. Therefore, D2=+1. Because the whole plot thread 1-2 lies within one wrong column (there is no transition between front and back sides of the Jersey), D3=0. Endpoint 2 coincides with the point R, so D4=R. Thus, the location of the plot thread 1-2 (typical element of a segment of a straight line, representing the wand loops) can be written as (D1D2D3D4)=(0, 1, 0, R).

As a second model element will take the site of the needle arc 2-3, rendering it part of an arc of a circle of given radius. The entire element is within one stitch of the column and row, so D1=0, D2=0. There is no transition between front and back sides of the Jersey, so D3=0. The start and end points of the plot coincide with the characteristic points of the hinge structure of R and L, so D4=RL. Record the location of the plot threads 2-3 takes the form (D1D2D3, 04)=(0, 0, 0, RL).

The following plot threads 3-4 second wand loop - similar to section 1-2. Differ only in the value of the coordinates of D2, have her negative increment when moving from point 3 to point 4, and designation endpoint 4 (C). For this site - (0, -1, 0, C).

Plot threads 4-5 - advance - can be viewed as a horizontal straight-line segment. Then when moving from point 4 to point 5 will jump to the adjacent hinge column (D1=1), will not be changes buttonhole row (D2=0), will retain ownership of the parcel to the wrong side of Jersey (D3=0), point 5 is equivalent to the center point of the column (D4=). This section presents the generalized coordinates is (1, 0, 0, C).

The coordinates of the sections 5-6, 6-7 and 7-8 are calculated similarly, parts 1-2, 2-3 and 3-4. For these plots coordinates: (0, 1, 0, R)to(0, 0, 0, RL)-(0, -1, 0, C).

Section 8-9 - part forging sketch is straightforward. When moving from point 8 to point 9 will jump to the adjacent hinge column (D1=1) and buttonhole row (D2=1) and on the front side knitted fabric (D3=1), point 9 is equivalent to the characteristic point of the column R (D4=R). The coordinates of this section - (1, 1, 1, R).

Section 9-10 - part arc of a circle. The coordinates of this section - (0, 0, 0, RC).

Plot 10-11 - straight section - (1, 0, 0, C).

Plot 11-12 - part arc of the circle (0, 0, 0, CL).

Plot 12-13 - a straight line segment is the last coded plot thread 1. Coordinates (1, -1, -1, C). The transition from the front side to the reverse corresponds to D3=-1.

The full recording of the coordinates of all the model elements rapporteuse thread 1 has the following form: (0, 1, 0, R)TO(0, 0, 0, RL)-(0, -1, 0)TO(1, 0, 0)TO(0, 1, 0, R)TO(0, 0, 0, RL)-(0, -1, 0)TO(1, 1, 1, R)TO(0, 0, 0, RC)-(1, 0, 0)-(0, 0, 0, CL)-(1, -1, -1, C).

Thread 2. Sections A-b, B -,..., O-P is similar to the above for thread 1 and also represent the model elements in the form of segments of direct and arcs of circles and have only a quantitative difference. For example, sticks forging hinges, elongated 2 rows are the coordinates (section M-N):(0, 2, 0, R). A full account of the model elements, thread 2: (0, 1, 0, R)to(0, 0, 0, RL)-(0, -1, 0)to(1, 0, 0)to(0, 1, 0, R)to(0, 0, 0, RL)-(0, 1, 0)to(1, 0, 1,)-(0, 2, 0, R)to(0, 0, 0, RL)-(0, -2, 0)TO(1, 0, 0)TO(0, 2, 0, R)TO(0, 0, 0, RL)-(0, -2, 0)TO(1, 0,-1, C).

For clarity, the structure of the knitted fabric shown in the drawing in the stretched condition. Really front and back bars have some "time" with respect to each other, it is easy to consider in recording the coordinates of the same model elements. Let the front bar overlaps the wrong half. Then the coordinates of many elements of the thread 2 will have the following form: (0, 1, 0, R)to(0, 0, 0, RL)-(0, -1, 0, C)-(1, 0, 0, C)-(0, 1, 0, R)to(0, 0, 0, RL)-(0, -1, 0, C)-(0.5, 0, 1, C)-(0, 2, 0, R)to(0, 0, 0, RL)-(0, 2, 0, C)-(1, 0, 0, C)-(0, 2, 0, R)to(0, 0, 0, RL)-(0, -2, 0, C)-(0.5, 0, -1, C). Different coordinates are underlined.

Figure 2 shows typical elements of the structure of the Jersey rocker plated weave. Generalized coordinates: D1- the offset point of the thread across the knitted fabric, D2- the offset point of the thread VD is eh knitted fabric, D3position (offset) of the point of the thread within one stitch of the column and one stitch of the row. D4 - stretch factor plot threads (k0...k4) - physico-mechanical characteristics, constant for each model element. Full recording of the coordinates of the model elements forming the main (fine) thread has the form: (0, 1, L, k0)-(0, 0, LR, k0)-(0, -1, C, k0)-2*[(1, 0, C, k0)-(0, 1, L, k0)-(0, 0, LR, k0)-(0, -1, C, k0)-(1, 0, C, k1)-(-1, 1, R, k2)-(2, 0, L, k3)-(-1, -1, C, k2)-(1, 0, C, k1)-(0, 1, L, k0)-(0, 0, LR, k0)-(0, -1, C, k0)].

Thus, the proposed method of manufacturing knitted fabrics allows to describe arbitrary patterns knitwear, as well as its physical and mechanical properties.

A method of manufacturing knitted fabrics, including operations job patterns knitted in a pattern of sequential sample elements, convert the given patterns in native code and vyazaniya knitted on a machine with software control, characterized in that the quality of the model elements specify the parts of the thread with constant properties and the location of the standard elements in the rapport ask their generalized coordinates, with generalized coordinates represent the increment of the geometric coordinates on the plot threads and otnositel the e local geometric coordinates at the beginning and end of the segment and the physical-mechanical parameters of this section.



 

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