JPH0491259A - Elastic yarn feeder in circular knitting machine - Google Patents

Abstract

PURPOSE:To make elastic yarn feed tension uniform by providing elastic yarn feed guide rollers corresponding to the number of knitting needles and by winding a common driving belt on said rollers. CONSTITUTION:Elastic yarn 5 to be fed together with a yarn 4 to knitting needles 2 is delivered via feed guide rollers 7. A common driving belt 12 is wound on said guide rollers 7, and put to circulation running through a driving pulley, thus synchronously rotating all of the guide rollers 7.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an elastic yarn feeding device for a circular knitting machine.

(Prior art) In a circular knitting machine for knitting tubular stockinette fabric,
Elastic yarns such as rubber yarns and spantex are fed to the knitting needles along with ground yarns through a yarn path for knitting or insertion.

In this case, the elastic yarn feeding guide member guides the fixed yarn path.
Each was set up separately and independently.

(Problems to be Solved by the Invention) In the conventional technology in which guide yarn paths for feeding elastic yarns are provided individually and independently, the tension of the elastic yarns is different from each other. When passing through the paper, static electricity was generated, causing uneven knitting. In addition, it is difficult to feed the elastic yarn while keeping the tension constant, and the quality of the knitted fabric may be uneven.

In particular, the above-mentioned problem is noticeable when the cylinder diameter is large and there are many yarn feeders, such as in a circular knitting machine.

An object of the present invention is to suppress the generation of static electricity in the feeding of elastic yarns fed to a large number of knitting needles, and to make the yarn feeding tension uniform, thereby improving the quality of knitted fabrics.

(Means for Solving the Problems) The present invention provides an apparatus for feeding ground yarn 4 to knitting needles 2 of a circular knitting machine via a yarn path 6 and feeding elastic yarn 5.
In order to achieve the above objectives, the following technical measures have been taken:

That is, in the present invention, a number of elastic yarn feeding guide rollers 7 corresponding to the number of knitting needles 2 is provided, and the guide rollers 7
A common drive belt 12 is wound around the guide roller 7 in order to drive all of them in the yarn feeding direction in synchronization, and a drive pulley 13 for the drive belt 12 is provided.

(Function) According to the present invention, the elastic yarn 5 is fed together with the base yarn 4 to the knitting needles 2, and a cylindrical knitted fabric is manufactured by the movement of the needles.
Elastic threads 5 are knitted or inserted into this fabric.

In this case, the elastic yarn 5 is fed via this feed guide roller 7 without passing through the corresponding yarn path 6, and a common drive belt 12 is wound around the feed guide roller 7, and is attached to a drive pulley 13. By circulating the belt 12, all the guide rollers 7 are rotated synchronously, suppressing the generation of static electricity when feeding the elastic yarn 5, and keeping the yarn feeding tension constant or uniform.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

In the figure, l is a cylinder of a circular knitting machine, and a knitting needle 2 is provided on the outer periphery of the cylinder 1 so as to be movable up and down. have.

The hats of the knitting needles 2 are engaged with the cams 3A of the cam box 3, and the large number of knitting needles 2 are moved in a predetermined manner by the rotational drive of the thin lidder 1, and the elastic yarns 5, such as rubber yarns, fed together with the ground yarns 4 are moved. Knit or insert a cylindrical material.

The ground yarn 4 is fed to the corresponding knitting needle 2 via a yarn path 6 having a yarn feeder 6A, and the elastic yarn 5 can be fed to the corresponding knitting needle 2 without passing through the yarn path 6.

A large number of yarn paths 6, that is, feed guide rollers 7 for the elastic yarns 5, whose number corresponds to the number of knitting needles 2, are attached to the fixed side of the radial position of the cylinder l, and a support shaft is attached to the fixed side of the cam box 3, etc. The feed guide roller 7 has a plurality of V grooves 7A, three in the figure, and
It is rotatably mounted on a support shaft 8 using a bearing 9.

The support shaft 8 is bent in the middle in an elevational view, and the base thereof is fixed to the box 10, and the height direction and the yarn feeding direction can be adjusted by means of the threaded portion 8B and the nut 1).

A common endless drive belt 12 is wound around each of the feed guide rollers 7.
is circulated in the direction of arrow A by one driving pulley 13, thereby causing all of the feed guide rollers 7 to rotate synchronously in the yarn feeding direction. Elastic thread 5 in contact
can be supplied to the corresponding knitting needles 2 along with the ground yarn 4 fed through the yarn path 6 while keeping the yarn feeding tension constant.

The feed guide roller 7 is made of resin, which further prevents the generation of static electricity and fluff. In the vicinity of the thread opening 6A, the same number of thread openings as the openings 6A are installed radially toward the center of the cylinder (pot) 1.

The mounting position and direction of the feed guide roller 7 can be changed depending on the machine used, and although the roller 7 is shown facing upward in the embodiment diagram, it can also be mounted downward (hanging).

(Effects of the Invention) The present invention is as described above, and the number of elastic yarn feeding guide rollers 7 corresponding to the number of 20 knitting needles is provided, and the guide rollers 7 are arranged so that all of the guide rollers are driven in the yarn feeding direction in synchronism. Since the common drive heald 12 is wound around the roller 7 and the drive pulley 13 of the drive bell 2 is provided, the feeding tension of the elastic yarn 5 fed to the knitting needle 2 is constant. The unevenness during knitting by the knitting needles 2 is reduced, and the quality of the fabric into which the elastic threads 5 are knitted or inserted can be improved.

Further, since the guide roller 7 of the elastic thread 5 is forcibly driven, generation of static electricity is prevented.

This has the advantage of being able to reduce production costs due to improved production efficiency, etc., and also prevents quality deterioration.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an elevational view, FIG. 2 is a partial plan view, FIG. 3 is a front view, and FIG. 4 is a partially cutaway front view of a roller. 1...Knitting needle, 4...Basic thread, 5...Elastic thread, 7...
・Guide roller, 12... Drive belt, 13... Drive pulley Patent applicant: Higashi Seisakusho Co., Ltd.
Attorney Patent Attorney Yasu 1) Toshio =... Figure 4 of Kuman

Claims (1)

[Claims] (1) In a device that feeds a ground yarn (4) to a knitting needle (2) of a circular knitting machine via a yarn path (6) and also feeds an elastic yarn (5), the knitting needle (2) A number of elastic yarn feeding guide rollers (7) corresponding to the number of elastic yarn feeding guide rollers (7) are provided, and all of the guide rollers (7) are driven in the yarn feeding direction in synchronism.
1. A yarn feeding device for elastic yarn in a circular knitting machine, characterized in that a common drive belt (12) is wound around a common drive belt (12), and a drive pulley (13) for the drive belt (12) is provided.