JP2009133014A - Latch needle for circular knitting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a latch needle for a circular knitting machine, which has a relatively simple structure and can knit a stable double loop knitted fabric in a fine gauge. <P>SOLUTION: This latch needle (7) for the circular knitting machine is characterized in that a dent portion (8) is disposed between a connection portion (4) and a hook (5), and an angle (α) formed between the inside wall (10) of the hook (5) and the upper surface (11) of the connection portion (4) is <55 degree. The latch needle (7) for the circular knitting machine, wherein the radial (Rb) of a curve for forming the dent portion (8) is <0.25 mm, and a difference (H) in level between the dent portion (8) and the upper surface (11) of the connection portion (4) is at least 0.03 mm. The latch needle (7) for the circular knitting machine, wherein the radial (Ra) of the inside wall (10) of the hook (5) is at least 1.0 mm. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a knitted needle (hereinafter simply referred to as a “knitted needle”) used in a circular knitting machine.

  Conventional knitted needle hooks are roughly classified into three types: a round hook, a reverse plating hook whose center is close to the back of the needle, and a plating hook whose center is far from the back of the needle. The present invention relates to one of the reverse plating hooks.

  With the conventional reverse plating hook, it has been difficult to knit a stable double loop knitted fabric with a fine gauge of 28 gauge, 32 gauge or more. In order to solve the problem, Patent Documents 1 and 2 below propose a knitted needle having a hook having a novel shape.

  The knitted needle of the following Patent Document 1 has a structure in which a protrusion is formed in the hook and the ground yarn and the splicing yarn are distributed.

The knitted needle of the following Patent Document 2 has a separation edge for separating and holding the thread in the hook.
6-33986 JP 2001-348863 A

  In order to manufacture the knitted needles of Patent Documents 1 and 2 above, it is necessary to form protrusions and edges in a minute space inside the hook, but such processing is technically difficult, and special processing is required. Is required. Also, with conventional knitted needles, it has been difficult to stabilize the ground yarn and splicing yarn at the position in the hook as intended.

  An object of the present invention is to provide a knitting needle for a circular knitting machine, which is capable of knitting a double loop knitted fabric having a relatively simple structure and stable in a fine gauge.

  The knitting needle for a circular knitting machine of the present invention is provided via at least one butt portion, a cheek provided at at least one end of the needle stem portion, and a connecting portion located at a position higher than the back of the needle from the cheek. And a knitting needle for a circular knitting machine having a pivot that is pivotally supported by the cheek, and a recess is provided between the connecting portion and the hook, and an inner wall of the hook is formed as an upper surface of the connecting portion. The angle α is set to be smaller than 55 degrees.

  In the present invention, a recess is provided at the base of a hook of a knitting needle for a circular knitting machine, and the hook inner wall is in a state close to a straight line so that the ground yarn is reliably guided to the recess. Therefore, the ground yarn that enters the hook first is guided to the recess, and the distance from the splicing yarn that enters the hook later is released, so that a stable double loop knitted fabric can be knitted.

  According to the present invention, as described in a comparative experiment described later, a double-loop knitted fabric (for example, a double-loop knitted fabric of 80 cotton count and 20 denier polyurethane elastic yarn) that has been difficult with a conventional needle is also knitted cleanly. We were able to.

  In the present invention, a concave portion is provided in the hook of the knitted needle, and the hook inner wall is arranged so that the ground yarn fed from the upper side and entering the hook first is reliably guided to the concave portion by stitching the needle. Is in a state close to a straight line, and the angle formed by the hook and the connecting portion is an acute angle.

  The recess is preferably recessed as much as possible from the upper surface of the connecting portion within a range in which the yarn can move smoothly in the hook. This is because the distance between the ground yarn and the splicing yarn can be increased by such a configuration. The step between the concave portion and the upper surface of the connecting portion, that is, the concave amount is preferably at least 0.03 mm, more preferably 0.04 to 0.06 mm, and particularly preferably 0.05 mm. The radius of the curve forming the recess is preferably smaller than 0.25 mm, more preferably 0.10 to 0.20 mm, and particularly preferably about 0.15 mm.

  The inner wall of the hook is preferably in a state close to a straight line within a range in which the thread can move smoothly in the hook. This is because such a configuration ensures that the ground yarn is guided to the recess. The radius of the inner wall of the hook is preferably at least 1.0 mm, more preferably 1.2 to 1.8 mm, and particularly preferably about 1.5 mm. It is essential that the angle formed by the inner wall of the hook with the upper surface of the connecting portion is smaller than 55 degrees, preferably 40 to 50 degrees, particularly preferably about 45 degrees.

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

  FIG. 1 is an overall view of a knitted needle 7 according to a first embodiment of the present invention. FIG. 2 is an enlarged view of the hook. FIG. 3 is a perspective view showing a knitting process using the knitted needle.

  As shown in FIG. 1, the knitting needle 7 of the present invention is also composed of the needle head A, the needle stem 2, the at least one bat 1, and the needle rear end 16 as basic components like the conventional knitting needle. Is provided.

  As shown in FIG. 2, the needle head A includes a hook 5, a latch 6 that opens and closes the hook 5, a cheek 3 that pivotally supports the latch 6, and a connection portion that connects between the cheek 3 and the hook 5. It consists of four. The connecting portion 4 is at a position slightly higher than the needle back 9.

  A feature of the present invention is that a recess 8 is provided between the connecting portion 4 and the hook 5 and an angle α formed by the inner wall 10 of the hook 5 with the upper surface 11 of the connecting portion 4 is smaller than 55 degrees. .

  In order to form the concave portion 8, the outer wall 12 of the concave portion 8 protrudes closer to the needle back 9 than the lower surface 13 of the connecting portion 4.

  Further, the radius Ra of the inner wall 10 of the hook 5 is at least 1.0 mm, the radius Rb of the curve forming the concave portion 8 is smaller than 0.25 mm, and the step between the concave portion 8 and the upper surface 11 of the connecting portion 4. H is at least 0.03 mm.

  When the knitted needle 7 formed in this way is used, the ground yarn 14 is fed from above and enters the hook 5 first as shown in FIG. 3, and the knitted needle 7 moves in the direction of arrow P. As it descends, it is reliably guided to the recess 8 by the hook inner wall 10. The splicing yarn 15 is fed from below and enters the hook with a delay. Therefore, the distance between the ground yarn and the splicing yarn can be increased by using the knitted needle according to the present invention.

An effect confirmation experiment was conducted using the conventional needle and the needle of the present invention. The organization conditions are as follows. The “conventional needle” used here is a needle that differs from the needle of the present invention only in that it does not have the features of the present invention.
Used knitting machine: OD2-VXC-3FA, Fukuhara Seiki Co., Ltd., 34 inches,
Knitted needles using 36 gauge machine: Conventional knitted needles and yarns using knitted needles according to the present invention: Cotton 80/1 count (yarn length is 240 mm / 10 w), polyurethane elastic yarn 20 denier (yarn length is 82 mm / 100 w)
Knitted fabric: Double loop knitted fabric

  Enlarged photographs of the knitted fabric using the knitted needle of the present invention and the knitted fabric using the conventional needle are shown in FIGS. 4 (a) and 4 (b), respectively. In the knitted fabric (FIG. 4 (b)) using a conventional knitted needle, there is a portion where the loop is recessed horizontally at the center. This is the part that is missprayed and appears to be recessed because cotton yarn and polyurethane elastic yarn (Lycra (registered trademark), Roika (registered trademark), etc.) have been replaced in the hook. The knitted fabric (Fig. 4 (a)) using the knitted needle of the present invention did not have such a knitting flaw and could be knitted cleanly.

1 is an overall view of a knitting needle for a circular knitting machine according to a first embodiment of the present invention. It is a hook enlarged view of the 1st example of the present invention. It is a knitting process diagram in the first embodiment of the present invention. It is an enlarged photograph of the knitted fabric by the knitted needle of this invention. It is an enlarged photograph of the knitted fabric by the conventional needle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Butt 2 Needle stem part 3 Teak 4 Connection part 5 Hook 6 Latch 7 Knitted needle 8 Recess 9 Needle back 10 Hook inner side wall 11 Upper surface 12 Outer side wall 13 Lower surface 14 Ground yarn 15 Saddle 16 Needle rear end H Step Ra Radius Rb Radius α angle

Claims (7)

At least one butt portion (1), a cheek (3) provided on at least one end of the needle stem portion (2), and a connection portion (a position higher than the needle back (9) from the cheek (3) ( 4) In a knitting needle (7) for a circular knitting machine having a hook (5) provided through 4 and a latch (6) pivotally supported by the cheek (3),
A concave portion (8) is provided between the connection portion (4) and the hook (5), and an angle formed by the inner wall (10) of the hook (5) with the upper surface (11) of the connection portion (4) ( A knitting needle for a circular knitting machine, characterized in that α) is smaller than 55 degrees. The knitting needle (7) for a circular knitting machine according to claim 1, wherein a radius (Rb) of a curve forming the concave portion (8) is smaller than 0.25 mm, and the concave portion (8) and the connecting portion. A knitting needle for a circular knitting machine, wherein the step (H) with respect to the upper surface (11) of (4) is at least 0.03 mm. The knitting needle (7) for circular knitting machines according to claim 2, wherein a radius (Rb) of a curve forming the concave portion (8) is 0.10 to 0.20 mm, and the concave portion (8) and the connecting portion. A knitting needle for a circular knitting machine, characterized in that a step (H) with respect to the upper surface (11) of (4) is 0.04 to 0.06 mm. The circular knitting machine knitting needle (7) according to any one of claims 1 to 3, wherein an outer wall (12) of the recess (8) is provided with the connecting portion (4) to form the recess (8). ) Knitting needles for circular knitting machines, protruding from the lower surface (13) of the needle back (9). 5. A knitting needle (7) for a circular knitting machine according to any one of claims 1 to 4, characterized in that the radius (Ra) of the inner wall (10) of the hook (5) is at least 1.0 mm. Knitting needles for circular knitting machines. 6. A knitting needle (7) for a circular knitting machine according to claim 5, wherein the radius (Ra) of the inner wall (10) of the hook (5) is 1.2 to 1.8 mm. Knitted needle for machine. The knitting needle (7) for a circular knitting machine according to any one of claims 1 to 6, wherein an angle formed by the inner wall (10) of the hook (5) with the upper surface (11) of the connecting portion is 40-50. A knitting needle for circular knitting machines, characterized by a degree.

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