JPS61239066A - Compound needle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement of a compound needle including a body, that is, a hook, and a slide plate for opening and closing the hook of the body.

[Conventional technology]

Conventionally, as shown in Japanese Patent Application Laid-open No. 56-118934, a compound needle with this type of structure has conventionally been made by bending an elongated metal plate along its longitudinal direction so that the cross section is approximately rectangular or approximately elliptical, and the above-mentioned slide is used. Some devices have a body with a cavity for sliding the plate, but such a cavity is created by first bending the metal plate into a U-shape to form a groove, and then inserting two side walls facing each other. By bending one or both of the grooves, the groove is closed and the slide plate is shaped to prevent the slide plate from escaping from the groove.

[Problem that the invention seeks to solve]

However, compound needles, like other sewing needles, are required to move at higher speeds in order to increase machine efficiency, and they must be accurate enough to allow knitting needles to operate smoothly and at high speeds. However, it is not always easy to bend the side wall, and there are many accidents where the slide plate falls off, and there are still many problems in easily mass-producing compound needles.

The present invention aims to eliminate these conventional drawbacks, and is capable of mass production at low cost through a simple process.Moreover, the quality of the knitted product is good, and the movement of the needles is carried out smoothly, accurately, and under stable conditions. It is an object of the present invention to provide a compound needle that can be used to perform high-speed work and greatly increase the efficiency of the machine.

[Means for solving problems]

The present invention provides a compound needle in which a slide plate is slidable in the longitudinal direction of the body so as to be able to approach and separate from the hook. A compound characterized in that a through hole is formed in the convex part, and the other part without the convex part is inserted into the through hole, so that the slide plate and the body slide relative to each other, making it wet. It's a needle.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 1 to 3. A body 2 having a hook 1 at its tip is formed by bending a protrusion 3 at a longitudinally intermediate portion thereof into a substantially inverted U-shape.
are formed in two places (Fig. 3).

Then, as shown in FIG. 1, cut portions 4 having a width smaller than the thickness of the body 2 are formed on each leg portion 3' of these convex portions 3 by cutting based on a circular cut line l (four locations in total). As a result, a part of this cut portion 4 becomes a through hole 5.

The shape and dimensions of this through hole 5 should be made as close as possible to that of the slide plate 11 within the range in which the slide plate 11 can slide smoothly. This is important in that respect, but for this purpose, it is only necessary to adjust the diameter or center point of the cut line l, which can be easily implemented.

In this way, the slide plate 11 is guided and slid in the longitudinal direction of the body 2 by being inserted into each of the through holes 5 from its tip side, but the rear upper surface of the body 2 has a V-shaped cross section, for example. By forming a shaped guide groove and fitting the lower part of the slide plate 11 into the guide groove, the above sliding operation can be performed more accurately. In the figure,
6 and 12 are bats.

Next, in the embodiment shown in FIGS. 4 to 6, one stump-shaped convex portion 3 is formed by protruding the longitudinally intermediate portion of the body 2 in a rectangular shape. Then, as shown in FIG. 4, cutting parts 4 having a width smaller than the thickness of the body 2 are formed in the convex part 3 by cutting based on the circular cut line l, and as a result, two places below the convex part 3 are formed. The corner of the hole is the same as the through hole.

On the other hand, the width of the slide plate 11 is wider from the rear projection 13 to the butt 12 than the tip end side.

In this way, the slide plate 11 is guided and slid in the longitudinal direction of the body 2 by being inserted into each of the through holes 5 from its tip side, and the range of reciprocating movement of the slide plate 11 is convex. This is regulated by the contact between the portion 3 and the rear projection 13 and the contact between the butts 6 and 12.

In each of the above embodiments, the through hole 5 can be formed by rotating a disc-shaped cutter. Therefore, if such a processing method is effective, the convex portion 3 in the embodiment shown in FIG. It may be shaped like a letter, or the convex portion 3 in the example in Fig. 2 may be used.
may be trapezoidal or may have an appropriate shape.

Further, in the example of FIG. 1, the number of convex portions 3 may be one, but
In this case, it is preferable to increase the dimension of the body 2 in the longitudinal direction, so that the slide plate 11 can be reciprocated more accurately. On the contrary, in the example shown in FIG. 4, a plurality of convex portions 3 may be formed.

Further, in each of the above embodiments, the convex portion 3 was formed on the body 2, but on the contrary, such a convex portion was provided on the slide plate, and the body was inserted into the through hole formed in the slide plate. You can also do that. In any case, it is sufficient that the slide plate slides relative to the body and acts as a compound needle.

In each of the above embodiments, since the r-side part of the convex part 3 is open, the slide plate 11 is exposed in this part, so that dust and fluff can be effectively discharged when the knitting needles are operated. Therefore, there is no need to worry about clogging problems, and it also has the advantage of greatly contributing to faster hand movement.

Furthermore, in each of the above embodiments, the through hole 5 is formed by cutting the corner of the convex portion 3, and this processing method is particularly economical and simple compared to other methods. Although it is possible to mass-produce the process, it is also possible to appropriately select and employ other conventionally known processing methods.

〔Effect of the invention〕

According to the present invention, the through-hole for inserting the slide plate and guiding and sliding it can be formed by a simple process, and the precision of the shape and dimensions of the through-hole is improved, so that a high-performance compound needle can be formed. It is possible to mass-produce the slide plate at a low cost, and the reciprocating motion of the slide plate can be made smoother and faster, and its accuracy is also guaranteed, which has the effect of stably mass-producing knitted products of good quality.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a plan view of the main part thereof, and FIG. 3 is a front view of the body before cutting. 4 to 6 show other embodiments, FIG. 4 is a front view, FIG. 5 is a partially sectional front view, and FIG. 6 is a bottom view of essential parts. 1... Hook, 2... Body, 3... Convex part, 3'
... Leg part, 4... Cutting part, 5... Through hole, 6.1
2... Bat, IJ... Slide plate, 13.
... Rear projection, l... Cut line.

Claims (3)

[Claims] (1) In a compound needle in which a slide plate is slidable in the longitudinal direction of the body so as to be able to approach and separate from the hook, a convex portion is formed in the longitudinal middle portion of either the body or the slide plate, and the convex A compound needle characterized in that a through hole is formed in one part, and the other part without the convex part is inserted into the through hole so that the slide plate and the body can slide relative to each other. (2) the convex portion is formed in a substantially U-shape or a substantially V-shape;
The compound needle according to claim 1, wherein the through hole is formed in each of the two legs. (3) The compound needle according to claim 1, wherein the convex portion is formed in a stump shape.