JPH0711104B2 - Elastic yarn feeding device for circular knitting machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to an elastic yarn supplying device in a circular knitting machine.

(Prior Art) In a circular knitting machine for knitting a tubular knitted fabric,
The knitting needle is knitted or inserted by feeding an elastic yarn such as a rubber yarn and a spantex together with the ground yarn through a yarn path.

In this case, the elastic yarn feeding guide member has a fixed yarn path,
Each was independently provided.

(Problems to be Solved by the Invention) In the conventional technique in which the elastic yarn feeding guide yarn paths are individually and independently provided, the elastic yarn tensions are different from each other. When passing through, static electricity was generated and knitting spots were generated. In addition, it is difficult to feed the elastic yarn with a constant tension, and the quality of the knitted fabric may vary.

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

SUMMARY OF THE INVENTION It is an object of the present invention to ensure the improvement of the quality of knitted fabric by suppressing the generation of static electricity in the elastic yarn supply to a large number of knitting needles and by making the yarn supply tension uniform.

(Means for Solving the Problem) The present invention provides a knitting needle 2 of a circular knitting machine in which a base yarn 4 is fed through a yarn path 6 and an elastic yarn 5 is fed.
In order to achieve the above-mentioned purpose, the following technical measures are taken.

That is, according to the present invention, a plurality of grooves 7A are provided in the elastic yarn feed guide rollers 7 in a number corresponding to the number of the knitting needles 2, and
One of the 7A is used as a guide for the elastic yarn 5, and all the guide rollers 7 are synchronously driven in the yarn feeding direction, so that a drive belt 12 common to the groove 7A different from the guide groove 7A of the elastic yarn 5 is used. And a drive pulley 13 for driving the drive belt 12 is provided.

(Function) According to the present invention, the knitting needle 2 is fed with the elastic yarn 5 together with the ground yarn 4, and the knitting needle produces a tubular knitting fabric,
The elastic thread 5 is knitted or inserted into this cloth.

In this case, the elastic yarn 5 is fed through the 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 wound around the drive pulley 13. As the belt 12 is circulated and circulated, all the guide rollers 7 are synchronously rotated to suppress the generation of static electricity in the yarn feeding of the elastic yarn 5 and keep the yarn feeding tension constant or uniform.

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

In the figure, 1 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. The knitting needle 2 has a butt 2A on a needle body and a notch 2B or the like on the upper portion. Have

The butt 2A of the knitting needle 2 is engaged with the cam 3A of the cam box 3, and a large number of the knitting needles 2 perform a predetermined needle movement operation by the rotational driving of the synrider 1, and the elastic yarn 5 such as the rubber yarn fed together with the ground yarn 7 is moved. Insulate or insert into tubular dough.

The ground yarns 4 are respectively fed to the corresponding knitting needles 2 via the yarn paths 6 having the yarn feeder 6A, and the elastic yarns 5 can be fed to the corresponding knitting needles 2 without passing through the yarn paths 6.

A large number of yarn paths 6 attached to the fixed side in the radial position of the cylinder 1, that is, a feed guide roller 7 for a number of elastic yarns 5 corresponding to the number of knitting needles 2 is supported on the fixed side of the cam box 3 or the like by a spindle. The feed guide roller 7 has a plurality of V-grooves 7A, three V-grooves 7A in the figure, and is rotatably mounted on the support shaft 8 by a bearing 9.

The support shaft 8 is bent in the middle in an elevation view, and the base portion is fixed to the fixed box 10, and the height direction and the yarn feeding direction can be adjusted by the screw portion 8B and the nut 11.

A common endless drive belt 12 is wound around each of the feed guide rollers 7, and the drive belt 12 is circulated in the direction of arrow A by one drive pulley 13, whereby the feed guide roller 7 is rotated. All of the elastic yarns are synchronously rotated in the yarn feeding direction. Therefore, the elastic yarn 5 contacting the V groove 7A of the feed guide roller 7 is fed through the yarn path 6 while keeping the yarn feeding tension constant. Can be supplied to the corresponding knitting needle 2 together with the ground yarn 4.

The feed guide roller 7 is made of resin, which further prevents static electricity generation and wind line generation, and the V groove 7A, which is a passage for the elastic yarn 5, is mirror-finished and is supplied. In the vicinity of the thread 6A, the same number as the thread 6A are mounted radially toward the center of the cylinder (hook) 1.

The mounting position and the direction of the feed guide roller 7 can be changed depending on the machine used, and the roller 7 is mounted in the downward direction (suspended shape) in the embodiment shown in the figure.

(Effects of the Invention) The present invention is as described above, and the elastic yarn feed guide rollers 7 are provided in a number corresponding to the number of knitting needles 2, and all of the guide rollers 7 are synchronized to drive in the yarn feeding direction. Since the common drive belt 12 is wound around the guide roller 7 and the drive pulley 13 of the drive belt 12 is provided, the feeding tension of the elastic yarn 5 fed to the knitting needle 2 becomes constant, and the knitting needle 2 The unevenness during knitting due to knitting can be reduced, and the quality of the material for knitting or inserting the elastic yarn 5 can be improved.

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

Further, the plurality of grooves 7A formed in the guide roller 7 serve as guide grooves for the elastic yarn 5, and the drive belt 12 is wound around the groove 7A different from the guide groove 7A. There is no clamping force with the belt 12, and the tension can be kept constant and the yarn can be fed.

As a result, there is an advantage that the production cost can be reduced by improving the production operation rate and the like, and the deterioration of quality can be prevented.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an elevation 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 ... ground thread, 5 ... elastic thread, 7 ... guide roller, 12 ... drive belt, 13 ... drive pulley.

Claims (1)

[Claims] 1. A device for feeding a ground yarn (4) and an elastic yarn (5) to a knitting needle (2) of a circular knitting machine through a yarn path (6), wherein the knitting needle (2) ), A plurality of grooves (7A) are provided in the elastic yarn feeding guide roller (7), and one of the grooves (7A) serves as a guide for the elastic yarn (5), and the guide roller (7) ) In order to drive all of them in the yarn feeding direction in synchronization, a common drive belt (12) is wound around a groove (7A) different from the guide groove (7A) of the elastic yarn (5), and the drive belt (12) An elastic yarn feeding device for a circular knitting machine, comprising the drive pulley (13) of 12).