JPH04146245A - Weft knit fabric and apparatus for producing the same - Google Patents

Abstract

PURPOSE:To obtain a weft knit fabric without causing running phenomena even if yarn breakage occurs by respectively carrying out tucking of the first knitting yarn and the second yarn in a specific zigzag state and knitting the yarns into a double fabric. CONSTITUTION:The first knitting yarn (A) is knitted into normal stitches in the warp direction and the second knitting yarn (B) is simultaneously tucked. Stitches on the adjacent side are then knitted into normal stitches in the warp direction with the second knitting yarn (B). The first knitting yarn (A) is simultaneously tucked. Stitches on the adjacent side are then knitted into normal stitches in the warp direction with the first knitting yarn (A) and the knitting yarn (B) is simultaneously tucked. The aforementioned knitting is then successively repeated to tuck the respective yarns (A) and (B). Thereby, a double fabric is knitted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a novel weft knitted fabric knitted with a weft knitting machine such as a circular knitting machine or a flat knitting machine, and an apparatus for manufacturing the same.

(Prior Art) Conventional weft-knitted fabrics are knitted as shown in FIG. 5, so when yarn breaks, loops run one after another in the warp direction (laddering).

(Problems to be Solved by the Invention) The run phenomenon described above may occur for various reasons during knitting, may occur for various reasons when sewn into secondary products, and may also occur during use after being made into a product. However, there was also the issue of causing a run phenomenon.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a weft-knitted fabric and an apparatus for manufacturing the same, which will not cause the run phenomenon even if yarn breakage occurs.

(Means for Solving the Problems) In order to achieve the above object, the weft-knitted fabric of the present invention has a weft-knitted fabric in which the first knitting yarn A and the second knitting yarn B are used to knit the weft. The 1st knitting yarn A is knitted in the warp direction in the normal stitch, and the 20th knitting yarn B is knitted in the warp direction, and this spacing stitch is knitted in the above 2nd stitch.
The knitting yarn B is used to knit the normal stitch in the warp direction, and the first knitting yarn A is knitted in the warp direction, and the second knitting yarn A is knitted in the warp direction in the normal stitch, and the above-mentioned first knitting yarn A is knitted in the warp direction. The fabric is characterized in that two knitting yarns B are tuck-knitted, and this knitting is sequentially repeated to tuck-knit each knitting yarn A and B to create a double-ply fabric.

Furthermore, the weft knitted fabric manufacturing apparatus of the present invention alternately arranges two types of knitting needles held movably up and down on the outer periphery of a cylinder, and each of the two types of knitting needles has two or more butts arranged at different intervals. Two types of cams in the cam box corresponding to each butt are arranged alternately, and as the cylinder rotates, each cam moves the tips of the two types of knitting needles through the hats to each yarn path. 1st knitting yarn A by alternating up and down sections.
and the second knitting yarn B are vertically moved alternately between a normal position and a tuck position.

(Function) According to the present invention according to claim (1), even if the first knitting yarn A breaks, a run phenomenon does not occur due to the knitting structure of the second knitting yarn B, and the second knitting yarn B does not cause a run phenomenon. Even if knitting yarn B breaks, the first
The run phenomenon does not occur due to the knitting structure of the knitting yarn A. In addition, even if both knitting yarns A and B break, the first knitting yarn A and the second knitting yarn B have different textures, so both knitting yarns A and B
are intertwined with each other to prevent the run phenomenon.

Furthermore, according to the present invention according to claim (2), it is only necessary to alternately arrange two types of knitting needles with different butt intervals and to arrange cams corresponding to the two types of knitting needles. It is extremely practical because the weft knitting machine can be easily modified and used.

(Example) Next, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is an enlarged front view of a double tuck weft knitted fabric.

When knitting a weft stitch using the first knitting yarn A and the second knitting yarn B, the first knitting yarn A is knitted in the warp direction in the normal stitches, and the second knitting yarn B is tack knitted, The distance stitches are knitted in the warp direction as normal stitches using the second knitting yarn B, and the first knitting yarn A is tuck-knitted, and then the distance stitches are knitted as regular stitches using the first knitting yarn A. While knitting in the warp direction, the second knitting yarn B is tuck-knitted, and this knitting is sequentially repeated to tuck-knit each of the knitting yarns A and B in a zigzag pattern, thereby knitting a double-layer fabric.

According to the above configuration, even if the first knitting yarn A breaks, a run phenomenon does not occur due to the knitting structure of the second knitting yarn B.
Further, even if the second knitting yarn B breaks, the knitting structure of the first knitting yarn A will not cause a run phenomenon. Karini, yarn A
Even if both knitting yarns A and B break, since the knitting yarns A and B have different textures, both knitting yarns A and B become entangled with each other, thereby preventing the run phenomenon.

An example of the manufacturing apparatus for the above-mentioned weft knitted fabric will be explained with reference to FIGS. 2 to 4.

As shown in FIG. 2, reference numeral 1 is a cylinder of a circular stitching machine, and two types of knitting needles A2.
B3 are arranged alternately, and these knitting needles A2. B3 has three bats 2a, 2b, 2c, 3a, 3b, 3 respectively.
C is partially protruded at different intervals, and hook 2 is attached to the needle tip.
d.

3d and notches 2e and 3e.

The knitting yarns A and B are passed through the yarn feeder 5 of each yarn path 4 and the yarn feed hole 6 to the corresponding knitting needles A2. The yarn is fed to B3.

7 is a cam disposed in the cam box 8, and this cam 7
As shown in FIG.
' and 'knit cams 7d and 7d are arranged in sequence.

Each knitting needle A2. B3 needle movement trajectory A21. B31 indicates that it is moving up and down alternately as shown in the figure.

At point a on the needle movement trajectory A21, as shown in FIG. 4(a), the knitting yarns A and B, which have already been formed into a loop, are located below the notch 2e. Similarly, at point 3 in Figure 4, as shown in Figure 4 fb), the knitting yarn A for tacking is hooked onto the hook 2d, and similarly at point 0, as shown in Figure 4 (C), the knitting yarn A is hooked onto the hook 2d. Knitting yarn B for normal stitches is hooked onto hook 2d without overcutting A, and knitting yarns A and B, which were located below the notch 2e at point d, are hooked in the same way.
Separate it from the needle tip, and as shown in Figure 4 (d), attach new knitting yarn A with hook 2d.

The notch 2e is closed with yarn B hooked on, and new knitting yarns A and B are formed into a loop.

Next, again at point a in FIG. 3, as shown in FIG. 4 fa), the knitting yarns A and B formed into a loop are positioned below the notch 2e, and knitting is carried out by repeating the above-mentioned operations.

According to the above configuration, two types of knitting needles A2. B3 are arranged alternately, and the two types of knitting needles A2. Cam 7 to correspond with B3
Since it is only necessary to arrange a to d, a conventional latitude line machine can be easily modified and used.

(Effect of the Invention) According to the present invention according to claim (1), even if the first knitting yarn A breaks, a run phenomenon does not occur due to the knitting structure of the second knitting yarn B, and the Even if the second knitting yarn B breaks, the first
The run phenomenon does not occur due to the knitting structure of the knitting yarn A. However, even if knitting yarns A and B both break, knitting yarns A and B
Since the structure is different from that of the reorganized yarns A and B, the reorganized yarns A and B become entangled with each other and can prevent the run phenomenon.

Furthermore, according to the present invention according to claim (2), it is only necessary to alternately arrange two types of knitting needles with different butt intervals and to arrange cams corresponding to the two types of knitting needles. It is extremely practical because the parallel line machine can be easily modified and used.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention according to claim (1).
An enlarged front view of the heavy tuck weft knitted fabric, FIG. 2 is a simplified side view of the main parts showing an embodiment of the manufacturing apparatus, FIG. 3 is an explanatory diagram showing the cam arrangement and the locus of the knitting needles, and FIG. ) to (d> are explanatory diagrams showing the operation of the knitting needles and knitting yarn, and FIG. 5 is an enlarged front view showing the conventional fabric. A, B...Knitting yarn, 1...Cylinder, A2. A3...
・Knitting needles, 2a-c, 3a-c...butt, 4...
・Thread path, 7...cam, 8...cam box.

Claims (2)

[Claims] (1) When knitting a weft stitch using the first knitting yarn (A) and the second knitting yarn (B), the first knitting yarn (A) is knitted in the warp direction in the normal stitches, and the second Tuck knit the knitting yarn (B),
This adjacent stitch is knitted in the warp direction as a normal stitch using the second knitting yarn (B), and the above-mentioned first knitting yarn (A) is knitted in the warp direction, and then this adjacent stitch is knitted into the first stitch. The yarn (A) is knitted in the warp direction in regular stitches, and the second knitting yarn (B) is knitted in the warp direction.
Tuck knit and repeat this knitting sequentially to create each knitting yarn (A) (
A weft-knitted fabric characterized by knitting B) into a double layered fabric by tuck-knitting. (2) Two types of knitting needles that are held movably up and down on the outer periphery of the cylinder are arranged alternately, and each of the two types of knitting needles has two or more butts protruding at different intervals, and each of the butts and Two types of each cam in the corresponding cam box are arranged alternately,
As the cylinder rotates, each cam causes the needle tips of the two types of knitting needles to move up and down alternately in each yarn path section via the butt, thereby forming the first knitting yarn (A) and the second knitting yarn (B). A manufacturing device for a weft-knitted fabric, characterized in that the device is configured to move vertically alternately between a normal position and a tuck position.