WO2007058091A1

WO2007058091A1 - Method for knitting tubular fabric having border pattern

Info

Publication number: WO2007058091A1
Application number: PCT/JP2006/322192
Authority: WO
Inventors: Toru Ekawa
Original assignee: Shima Seiki Mfg., Ltd.
Priority date: 2005-11-17
Filing date: 2006-11-07
Publication date: 2007-05-24
Also published as: EP1964953A1; JPWO2007058091A1; EP1964953B1; EP1964953A4; CN101313096A; CN101313096B; JP5058817B2

Abstract

A method for knitting a tubular fabric having a border pattern by using a weft knitting machine in which a level difference occurring at a knitting yarn switching position is suppressed. First color portion of a border is knitted circularly in one direction, a second color portion is knitted circularly in the other direction, and after a knit loop is formed between knitting of the first color portion and the second color portion by feeding the knitting yarn of first color portion to a needle for locking an adjacent stitch over the border of circulation, steps for forming a tuck loop by feeding the yarn to a needle following this needle and then forming a knit loop following the knit loop by feeding a yarn to a needle for locking a knit loop formed by the knitting yarn of first color portion and by the knitting yarn of second color portion are inserted.

Description

Specification

Method for knitting a tubular knitted fabric having a border pattern

Technical field

TECHNICAL FIELD [0001] The present invention relates to a knitting method for suppressing a step generated at a knitting yarn switching portion when a tubular knitted fabric having a border pattern is knitted using a flat knitting machine.

Background art

[0002] When a knitted fabric is knitted with a border pattern (horizontal stripe pattern) on a tubular knitted fabric, a step occurs at a knitting yarn switching point. This impairs the appearance of the knitted fabric and lowers the product value. Figure 4 shows two colors consisting of A color part 7 and B color part 9 using two yarn feeders (hereinafter simply referred to as YF) of A color (first color) and B color (second color). A typical diagram for knitting a border pattern is shown below. In Figs. 4 and 5, Y for A color is indicated by a black triangle, YF for B color is indicated by a white triangle, and XX indicates the left boundary of the front knitted fabric 3 and the rear knitted fabric 5. In Fig. 4, YF2 is set on the left side of the knitted fabric and the knitted border pattern is formed by changing the YF used every 4 courses while knitting in the clockwise direction. In this case, as shown in the figure, a step is generated at the boundary where the knitting yarn switches. Fig. 5 shows an example of knitting that is used to suppress the level difference at the knitting yarn switching point. YF is set on the left and right sides of the knitted fabric, respectively, so that the B-colored knitting yarn is not switched at the left boundary X—X, and the occurrence of continuous steps at the border boundary is suppressed.

[0003] The present applicant has previously proposed the technique disclosed in Document 1 in order to cope with the occurrence of a step. In Reference 1, a stitch of at least one knitted fabric portion is missed at a knitting yarn switching portion to suppress a step generated at the portion, and post-processing of an end yarn portion including a transition yarn generated by knitting yarn switching is reduced.

Patent Document 1: International Publication No. WO01Z61092 Pamphlet

Disclosure of the invention

Problems to be solved by the invention

[0004] The method according to Fig. 5 can improve the occurrence of the step difference compared with the method according to Fig. 4, but the effect is small. Reference 1 shows the diagram in Figure 4. Although an effective coping method for suppressing the occurrence of a step at a knitting yarn switching portion in the case of circular knitting with a gram, that is, a tubular knitted fabric directed in one direction, the present invention is disclosed in Reference 1 and The purpose of is to provide a knitting method that is effective in reducing the level difference by different approaches.

Means for solving the problem

In the present invention, a cylinder in which a front knitted fabric and a rear knitted fabric are connected at a side end portion of a knitting width using a flat knitting machine having at least a first needle bed and a second needle bed facing each other. In a method for knitting a tubular knitted fabric having a border pattern of at least two colors of a first color portion and a second color portion, which are appropriately composed of the number of courses, on the shape knitted fabric, the first color portion of the border from the front knitted fabric Including a first step of circular knitting to the rear knitted fabric or from the rear knitted fabric to the front knitted fabric, and a second step of circularly knitting the second color portion of the border in the direction opposite to the first color portion. The following knitting is inserted between the first step and the second step;

a) Feed the knitting yarn of the first color to at least one needle that locks adjacent stitches beyond the boundary of the loop to form a knit loop, and then feed the knitting loop to the needle that follows this needle. At least one or more tack loops are formed and the force is supplied to the needle that locks the knit loop formed by the knitting yarn of the first color portion by the knitting yarn of the second color portion, and the new knitting loop follows the knit loop. Forming a knit norepe.

[0006] Also, the first color part knitting and the second color part knitting use the same YF, and the yarn changing device such as a splicer is used to switch the knitting yarn between the first color part and the second color part. And the joint portion of the yarns is knitted on the back side of the tubular knitted fabric by the knitting described in a).

[0007] In addition, the knitting of the first color part and the knitting of the second color part are different YFs, and the YF is switched, and the knit loop and the tack loop are formed by each YF.

[0008] Further, the boundary of the circular knitting is formed at the boundary of the front and back needle beds.

The invention's effect

[0009] The present invention is based on a knitting diagram as shown in FIG. In other words, the knitting yarn change point is one of the knitted fabrics, and the direction of the wrapping direction is reversed between A and B colors each time. As a result, as shown in Fig. 4, the color-switching parts do not line up on the same course at the boundary. Become. Furthermore, since the turning direction is reversed, the final course of the left A color part 7 and the first course of the B color part 9 in FIG. Therefore, the final course of A color section 7 and the first course of B color section 9 attract each other. In other words, on the left side near the border, the A-color stitch course is pulled up, and at the same time, the B-color stitch course is pulled down. This action brings the final courses of the A color part 7 and the first courses of the B color of the front knitted fabric 3 and the rear knitted fabric 5 close to the same height and contributes to suppressing the occurrence of level differences. . Furthermore, at the boundary part, between the A and B color courses, the knitting yarn of A color part 7 is fed to at least one needle that crosses the boundary of the loop and locks the adjacent stitches. And forming a tuck loop at the place where the turning direction is switched and forming a force to absorb the local deformation at the boundary by forming the knit loop following the knit loop with the knitting yarn of the second color portion. Since the hole is not opened at the place where the turning direction is switched by the tack, the step can be suppressed and a tubular knitted fabric having a beautiful appearance and a border pattern can be obtained.

[0010] In addition, if a yarn changer such as a splicer is used to knit the border between the yarn joints on the back side of the knitted fabric, the crossover yarn extends not only between the borders but also after the knitting. This eliminates the need for manual cleanup.

[0011] Further, if the boundary of the circular knitting is the boundary of the front and back needle beds, the knitting can be simplified.

Brief Description of Drawings

FIG. 1 shows a tubular knitted fabric having a border pattern according to an embodiment of the present invention.

FIG. 2 shows a diagram of the present example corresponding to FIG. 4 and FIG.

FIG. 3 is a diagram showing knitting steps of a tubular knitted fabric of the present example.

[Figure 4] Shows a general diagram when knitting a two-color border pattern.

[Figure 5] Shows an example of border organization to suppress the level difference.

Explanation of symbols

[0013] 1 ... cylindrical knitted fabric, 3 ... front knitted fabric, 5 ... rear knitted fabric, 7 ··· Amber portion, 9 ··· Amber portion

BEST MODE FOR CARRYING OUT THE INVENTION

Next, embodiments of the present invention will be described in detail with reference to the drawings.

[0015] FIG. 1 shows a tubular knitted fabric 1 having a two-color border pattern of amber and amber. Flat knitting machine Although not shown, a yarn changing device such as a splicer knotter is used between the A color and B color yarn packages and the YF that reciprocates on the needle bed and feeds the yarn to the knitting needle. The controller of the flat knitting machine can switch the knitting yarn by operating the yarn changing device at the required timing based on the knitting data. As such a flat knitting machine, for example, the one described in Japanese Patent No. 2816784 (corresponding patent: US Pat. No. 5,369,66, European Patent 0574881) can be used.

FIG. 2 shows a knitting diagram of the present embodiment corresponding to FIG. 5 and FIG. In FIG. 2, however, the knitting step additionally inserted at the yarn switching point is omitted. YF for A color is indicated by black triangles, YF for B color is indicated by white triangles, and X—X indicates the left boundary of front knitted fabric 3 and rear knitted fabric 5. YF is set on the left side of the knitted fabric. Although two YFs are shown in the figure, only one YF is used because the knitting yarn is actually switched by the thread changer. In the tubular knitted fabric 1, the circular knitting is reversed in the A color portion 7 and the B color portion 9.

FIG. 3 shows the knitting steps of the tubular knitted fabric 1 in detail. The arrow shown on the right in the figure indicates the knitting direction. FB indicates the front needle bed, BB indicates the rear needle bed, A to L indicate the front needle bed needles, and a to l indicate the rear needle bed needles. The front knitted fabric 3 constituting the tubular knitted fabric 1 is knitted as a flat knitted structure with the needles of the front needle bed FB, and the rear knitted fabric 5 is knitted with the needles of the rear needle bed BB. For convenience of explanation, the number of gold † used in the organization was reduced.

[0018] The A color portion 7 of the tubular knitted fabric 1 is knitted in the clockwise direction so that the rear knitted fabric 5 is knitted to the right and the front knitted fabric 3 is knitted to the left. On the other hand, the B-color part 9 is knitted in the counterclockwise direction opposite to the A-color part 7 and knits the front knitted fabric 3 on the right and the rear knitted fabric 5 on the left. Steps 1 to 4 show the formation of the A color part 7, and steps 7 to 10 show the formation of the B color part 9. Steps 5 and 6 and Steps 11 and 12 show the knitting step at the switching point of the A and ZB knitting yarns. The joint (change of color) of the A and ZB yarns is shown on the knitted fabric table. In order to prevent them from appearing, the yarn is pulled out and knitted into the rear knitted fabric 5, and knitting is performed at the same time so as to make the level difference caused by the color change inconspicuous. After step 13, the formation of A color part 7 following B color part 9 is shown. In this example, the border formation of A color and B color is repeated, and after step 12 formation, step 1 is performed. And the cycle to jump (3) is set. Cycle (1) is A color part 7, Cycle (2) is B color part 9 It is for adjusting the number.

Hereinafter, the organization of FIG. 3 will be described. Step S shows the locked state of the tubular knitted fabric 1 on the needle bed, the front knitted fabric 3 on the needles A to L of the front needle bed FB, and the rear knitted fabric 5 on the needles a to l of the rear needle bed BB 5 Is locked. Move YF to the right in Step 1 to perform the course knitting of the A-colored portion 7 of the tubular knitted fabric 1 7 the back knitted fabric 5 and then move YF to the left in Step 2 to move the front knitted fabric 3 of the same portion. The course is organized. Steps 3 and 4 show the same organization as Steps 1 and 2. For A color part 7, cycle (1) is repeated twice to form a round course for 4 courses.

[0020] Next, in order to switch the A color force to the B color, in step 5, YF is moved to the right, knit with the needle a of the rear needle bed B B, and tacked with the subsequent needles c and e. In Step 6, move YF to the left, tack with needles d and b, and knit with needle a. The significance of performing Steps 5 and 6 is that the color is switched accurately at the boundary and while suppressing the step difference. During this step, the yarn joint is pulled out from the YF, and the joint portion is cylindrical knitted. Woven inside the ground. That is, the joint is located in the tack section of steps 5 and 6. If a splicer is used as a yarn changing device, yarn termination after knitting can be omitted. In this example, the number of tacks can be further reduced if the position of the joint where the force is tucked with 4 stitches can be controlled more accurately. Conversely, if the control is rough, increase the number of tacks to absorb the error. Also, it is possible to absorb errors by methods other than tack.

In the subsequent step 7, the course knitting of the front knitted fabric 3 of the B color portion 9 is performed, and in the subsequent step 8, the course knitting of the rear knitted fabric 5 is performed. Steps 9 and 10 show the same organization as Steps 7 and 8. Next, in order to switch the border color again, in step 11, move YF to the right, knit with the needle A of the front needle bed F B and tack onto the needles C and E. In Step 12, tack with needles D and B and knit with needle A. These also apply the same idea as in steps 5 and 6 above. This B-color part 9 also repeats cycle (2) twice to form a four-round course.

[0022] In the above embodiment, by knitting in steps 5, 6 and 11 and 12, more stitches are formed on the needle a of the rear needle bed BB and the needle A of the front needle bed FB than the other needles, respectively. This will absorb the deformation at the boundary and suppress the level difference at the boundary to make it almost horizontal. In addition to the above, it is also possible to form a knit loop with a plurality of needles. To suppress the step generated at the force boundary part and to make the appearance beautiful, it is preferable to use one needle. [0023] In the above embodiment, an example in which a thread changing device such as a splicer is used has been described, but instead of this, two YFs, YF for A color and YF for B color, are used as usual. Of course, it is possible to organize the power without switching.

[0024] Further, the above embodiment shows a case where the knitting yarn switching portion is arranged at the boundary between the front knitted fabric and the rear knitted fabric constituting the tubular knitted fabric, that is, on the needle bed at the side end of the knitting width. However, the knitting yarn switching portion is not necessarily the side end portion of the knitting width, and it is naturally possible to perform the knitting method of the present invention by arranging it at the center portion of the front knitted fabric, for example. In that case, the knitting of each step should be shifted left and right according to the position of the boundary! ,.

[0025] When the stripes are frequently repeated in the tubular knitted fabric, the mistakes and tack knitting are repeated in order to make the step inconspicuous with the same needle by shifting the position of the knitting yarn switching point each time. However, it is preferable that the number of stitch courses in the part should be extremely less than other wales.

Claims

The scope of the claims

[1] Using a flat knitting machine having at least a first needle bed and a second needle bed facing each other, a cylindrical knitted fabric in which the front knitted fabric and the rear knitted fabric are connected at the side end of the knitting width, In the knitting method of the tubular knitted fabric having the border pattern of at least two colors of the first color portion and the second color portion, which has a suitable number of courses, the first color portion of the border is changed from the front knitted fabric to the rear knitted fabric. Or a first step of circular knitting from the rear knitted fabric to the front knitted fabric, a second step of circular knitting the second color portion of the border in the direction opposite to the first color portion, and the first step, Characterized by inserting the following organization during the second step;

[2] The first color part knitting and the second color part knitting use the same YF, and the yarn changing device such as a splicer is used to switch the knitting yarn between the first color part and the second color part. 2. The method for knitting a tubular knitted fabric having a border pattern according to claim 1, wherein a joint portion between yarns is knitted on the back side of the tubular knitted fabric by the knitting of (a).

[3] The knitting of the first color part and the knitting of the second color part are performed using different YFs, and the YF is switched, and the knit loop and the tack loop are formed by each YF. A method for knitting a tubular knitted fabric having a border pattern according to claim 1.

[4] The method for knitting a tubular knitted fabric having a border pattern according to any one of claims 1 to 3, wherein the boundary of the circular knitting is formed at the boundary of the front and back needle beds.