JPH11117157A - Knitting needle for knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a knitting needle having a shape designed to reduce the damage of a needle head part as low as possible. SOLUTION: This knitting needle for a knitting machine having a hook 2 and at least one controlling butt has a space part 6 between a needle stem part 3 extended from a needle head part and the controlling butt 7a in the longitudinal direction. The space part 6 is preferably beyond the extension line of the side face of the controlling butt 7a at the far side from the needle head. The distance from the extension line of the side face of the controlling butt 7a at the far side from the needle head to the deepest part of the space part is preferably 0.01-15.00 mm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a knitting machine, and more particularly to a knitting needle for a circular knitting machine.

[0002]

2. Description of the Related Art Conventionally, circular knitting machines, particularly those using an open type cam track as shown in FIG. 4, employ knitting needles 21 and 22, for example, having the shape shown in FIG. 2A. The cam track and the knitting needle are described in Japanese Patent Application Laid-Open No. Hei 8-49147, which is a prior application of the present applicant, and include master bats (control bats) 21A and 22A and at least two selection bats 21C and 21E; 22C, 2
2B. The selection bat is knit, tack,
Three positions of the welt, preferably four positions including the support position, are controlled by a selectable needle selecting means. Thereafter, the master bat is lowered by the stitch cam 25 to the stitch forming level. Due to such a needle selection mechanism, all the knitting needles selected to any positions are pulled down to the stitch forming level by the stitch cam.

[0003]

As the speed of the knitting machine is increased, when the needle selected by the welt changes abruptly in the stitch portion, the vibration generated in the butt portion passes through the needle stem. It was transmitted to the hook and caused the needle head to break.

The present invention has been made in view of the above problems, and has as its object to provide a knitting needle having a novel shape in which damage to the needle head is minimized. The present invention is intended to improve a knitting needle in a knitting machine using an open type cam track, and a knitting machine having a closed type cam track is not a direct application field of the present invention. However, in practice, it is of course possible to use the needle of the invention also for closed type cams.

[0005]

SUMMARY OF THE INVENTION A knitting needle according to the present invention is a knitting needle for a knitting machine having a hook and at least one control bat, wherein the knitting needle extends longitudinally between a needle stem extending from the needle head and the control bat. A space portion is provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The space which is a feature of the present invention can take various forms. Preferably, the space extends beyond an extension of a side surface of the control bat remote from the needle head. The distance from the extension of the side surface of the bat to the deepest part of the space varies depending on the overall structure, material, etc. of the needle, but is preferably 0.01 to 15.00 mm.
It is. It is preferable that the deepest part of the space forms an arc. The height of the needle stem located below the space is 1
mm is preferable.

[0007]

According to the present invention, the vibration generated at the butt portion due to the sudden change in direction due to the high-speed operation of the knitting machine causes the vibration in the longitudinal direction between the needle stem portion and the control bat in the stitch portion of the knitting needle selected by the welt selection. By bypassing the portion, vibration transmitted to the needle head is attenuated, and damage to the needle head is prevented.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2B to 2G are front views of knitting needles according to first and second to seventh embodiments of the present invention, respectively. These knitting needles I to VII include an elongated needle stem 3 having a hook 2 at the tip, a latch support groove 4 extending in the needle stem in the longitudinal direction, and a latch 5 rotatably supported by the latch support groove. Have. Furthermore, it has at least one butt 7 which engages with the control cam of the knitting machine. In each embodiment shown, two or three bats are provided. 2
A notch 8 is provided between each of the bats 7a and 7b and between the bat 7b and the rear end of the needle stem to form a bridge 10, which has a structure called a meander needle.

As shown in FIG. 1, at the lower part of the butt 7a near the tip, a bat 7a is separated from the needle stem 3, and an elongated space 6 extending rearward is provided substantially parallel to the needle stem 3. ing. Further, the butt 7a closer to the tip is connected to the rear butt 7 by the connecting portion 10 extending rearward.
b. The deepest part of the space forms an arc.

3B to 3D and 3F correspond to FIGS.
It is an enlarged view of the space part of F. X1 to X3 in the figure
Indicates the distance from the rear side surface of the bat 7a closer to the tip to the deepest part of the space. The symbol Y in the figure indicates the height of the needle stem. Y = 1.0 mm.

The form of the space in FIG. 3B is X1 = 12.0
The butt 7a having a length of 1 mm and being closer to the front end is connected to the rear bat 7b by a connecting portion 10 extending rearward.

The form of the space in FIG. 3C is X1 = 12.0
The butt 7a, which is 1 mm and is closer to the tip, is connected to the needle stem 3 by a connecting portion 10b extending downward from a connecting portion 10 extending rearward.

The form of the space in FIG. 3D is X2 = 6.02
mm, and the butt 7a closer to the tip is connected to the bridge 9 by a connecting portion 10 extending rearward.

The form of the space in FIG. 3F is X3 = 0.03.
The butt 7a, which is closer to the tip, is connected to the needle stem 3 and the bridge 9 behind the bat 7a by a connecting portion 10b extending downward.

In each embodiment, the bat receiving the impact is closer to the tip, but is not limited to this. The bat receiving the impact and the bat and the needle stem are divided below the bat. Any structure may be used as long as the space extending rearward is provided substantially parallel to the needle stem. Although the dial needle inserted into the needle dial has been described, the present invention is not limited to this, and the same applies to cylinder needles and other knitting tools.

[0017]

The knitting needle of the present invention and a conventional knitting needle were subjected to a comparative test. The present invention used here is shown in FIGS.
G shows six types of needles, and the conventional needle is the needle shown in FIG. 2A (the invention of JP-A-8-49147). Under the following conditions, insert these needles into the needle dial 100 by 100,
A test for confirming the effect of preventing shock breakage was performed.

Conditions common to both needles: A V-LPJ3B type circular knitting machine, Fukuhara Seiki Seisakusho, 30 inches, 18 gauge was used. The number of revolutions of the knitting machine is 35 per minute up to the total number of revolutions of 100,000, and 3 per minute until the total number of revolutions of 150,000
The test was performed at 8.5 revolutions, and at 40 revolutions per minute up to 200,000 accumulated revolutions. The configuration of the cam is described in JP-A-8-49147. The cam conditions were such that the welts were set at all the yarn feeders, and the stitch cam pull amount was 1.75 mm. Note that the comparison test was stopped after 100,000 rotations of the test needles A, F, and G.

[0019]

[Table 1] Number of broken test needles Cumulative rotation speed ABCDFG rotation speed (per minute) 10,000 times 0 0 0 0 0 0 1 135 20,000 times 1 0 0 0 0 0 0 10 10 350,000 times 200 000 214 435 000 times 50,000 000 135 50,000 7000 times 000 001 535 000 50,000 000 000 000 359 000 000 000 000 000 times 335,800,000 300,000 1,235,900,000 200,001,135,100,000 700,000,135,100,000 -000,000--38.5 120,000 Times-000--38.5 130,000 times-000--38.5 140,000 times-000---38.5 150,000 times-000-0--38.5 160,000 times − 000 000 − − 40 170,000 times − 000 000 − − 40 180,000 times − 000 00 − − 40 190,000 times −0 000--40 200,000 times-000--40

From the test results, it has been found that the needle of the present invention has remarkably improved durability as compared with the conventional needle.

Thus, the production cost can be reduced by preventing the occurrence of defective knitted fabric due to the damage to the head during high-speed operation, and preventing the productivity from being lowered by stopping the knitting machine for replacing defective needles. it can.

[Brief description of the drawings]

FIG. 1 is a front view of a knitting needle according to a first embodiment of the present invention.

FIG. 2 is a front view of the present invention and a conventional knitting needle used in a comparative test. FIG. 2A shows a conventional knitting needle. 2B to 2G are front views of knitting needles according to the second to seventh embodiments of the present invention.

FIG. 3 is an enlarged view of a space in FIGS. 2B to 2D and 2F.

FIG. 4 is a cam mechanism described in JP-A-8-49147.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Knitting needle 2 Hook 3 Needle stem 4 Latch support groove 5 Latch 6 Space 7 Butt 8 Notch 9 Bridge 10 Connecting part

Claims (4)

[Claims] 1. A knitting needle for a knitting machine having a hook (2) and at least one control bat, wherein a longitudinal space is provided between a needle stem (3) extending from a needle head and the control bat (7a). A knitting needle for a knitting machine, wherein (6) is provided. 2. The knitting needle for a knitting machine according to claim 1, wherein the space portion (6) extends beyond an extension of a side surface of the control bat remote from the needle head. 3. A distance (X1, X1) from an extension of a side surface of the control bat farther from the needle head to a deepest portion of the space.
3. The knitting needle for a knitting machine according to claim 2, wherein (2, X3) is 0.01 to 15.00 mm. 4. The knitting machine according to claim 1, wherein the control bat is controlled by an open cam of a control cam of the knitting machine.
The knitting needle for a knitting machine according to any one of the above.