JPS6347815B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yarn guide for knitting machines. In particular, the present invention relates to a yarn guide that can be suitably used for circular knitting machines equipped with combination knitting needles.

[Problems to be solved by conventional technology and invention]

When performing tack knitting, it is important for the knitting machine to ensure that the thread is inserted under the hook of the knitting needle.
This is particularly a problem in knitting machines that have a large number of knitting needles. This is especially true for knitting machines equipped with combination knitting needles, such as flat needles.
This is because combination needles do not have a latch that pushes the newly inserted yarn under the hook of the knitting needle when the lug closes.

Attempts have been made to insert the thread into a small effective area using a small cylindrical thread guide in the form of a conical duct. However, the aforementioned thread guide does not give satisfactory results as cotton waste accumulates in the conical duct and causes thread breakage at knots and thicker parts of the thread, and as a result, the known thread guide is not sufficient. It is difficult to thread the thread.

It is therefore an object of the invention to provide a thread guide for knitting machines with a large number of knitting needles, in particular even in circular knitting machines with combination needles, so that the thread can be fed without any hindrance.

[Means to solve the problem]

An object of the present invention is to provide a yarn guide comprising a guide groove member, the guide groove member having a guide groove having an acute-angled cross section that opens downward, and the bottom of the guide groove facing the hook of a knitting needle. The bottom is inclined downward and is formed so that the tip of the bottom reaches below the hook of the knitting needle when it is in a state of upward protrusion, and the lower side of the guide groove is open and the bottom of the guide groove is open. This is achieved by a thread guide for a knitting machine, which is characterized in that a transverse bridge-like plate is provided below the bottom.

Using a yarn guide constructed in this manner ensures that the supplied yarn is placed within the hook of the knitting needle. Furthermore, since the lower part of the guide groove is open, there is no possibility of cotton waste accumulating or yarn breakage due to knots or thick parts of the yarn. In addition, the horizontal bridge plate is provided at an appropriate distance from the bottom of the guide groove, more specifically, at a distance from the front end of the guide groove in the yarn traveling direction, so that the yarn itself does not fall downward. can be prevented.

In a preferred embodiment of the thread guide according to the invention, a thread channel is provided in addition to the guide groove element. That is, the yarn path is placed slightly below the extension line of the bottom of the guide groove of the guide groove member, and as a result, the yarn to be supplied is carried by the yarn path and the front end of the bottom of the guide groove in the yarn traveling direction. .

The guide groove element of the thread guide according to the invention can be produced particularly economically if the groove is produced by stamping and curving a metal plate. If said transverse bridge plate is required, it can be formed by adding further curvatures to the stamping curvature, thus making it easier to either manufacture or install additional parts. It's out of necessity.

In order to avoid excessive reversal of the thread being inserted into and leaving the thread guide, it is preferable to arrange the guide groove member such that the guide groove forms an acute angle with respect to the direction of movement of the needle row, so that the guide groove While in the member it already has a component in the direction of movement of the needle.

Since the yarn guide according to the present invention guides the yarn to a position immediately below the hook of the knitting needle that projects at a position forward in the yarn traveling direction, it is possible to combine the yarn guide with a cam action that performs a sliding movement of the knitting needle. Preferably, the thread guide is fixedly combined with said camming action. This combination can be achieved by connecting the thread guide support to a conventional adjustable slide member for said camming action. This ensures optimal positioning of the thread guide relative to the knitting needle which projects upwards and under whose hook the thread is to be inserted.

〔Example〕

Other features, details and advantages of the invention include:
BRIEF DESCRIPTION OF THE DRAWINGS A preferred embodiment of a thread guide according to the invention, which is installed in a circular knitting machine equipped with combination needles as knitting needles, will be elucidated in the following description and in the accompanying drawings.

FIG. 1 shows a needle cylinder 10 with a row of cylinder needles constructed as a combination needle, the cylinder needles 12 being extended and retracted in the usual manner by means of a cylinder cam member 14. The vertical position of the cylinder needle in the maximum upwardly slid position can be selected by means of an adjusting slide 16.
6 is vertically slidable and adjustable and
It supports a cylinder cam member 14 capable of performing an upward sliding movement of the cylinder needle 12. Furthermore, there is provided a row of dial needles 18 which cooperate in the usual manner with the cylinder needles, which dial needles 18 are radially supported and can be pushed out and retracted. No further explanation of the corresponding parts of the circular knitting machine will be necessary. A combination knitting needle can also be used as the dial needle 18.

According to the invention, a thread guide, generally designated 20, is mounted on said adjusting slide 16 and is provided with a thread channel 22 and a guide groove member 24. The guide groove member will be explained below with reference to FIGS. 2 and 3.

The guide groove member 24 is made by punching and bending a metal plate, one side of a roof-shaped metal plate portion 32 is connected to the support arm 30, and the inside of the roof-shaped metal plate portion 32 is formed by the guide groove 34. form. At the rear edge on the other side of said roof-shaped sheet metal part 32 is a bridging plate 36 which is bent inwards and whose free end extends conveniently into an opening 38 in the support arm 30. Formed in the bottom area.

According to the invention, the thread 50 to be inserted extends at an acute angle to the bottom 34a of the guide groove and rests against the guide groove surface only in the end region of the bottom of the guide groove forward in the direction of thread travel. , the thread path 22 is arranged against the bottom 34a of the guide groove 34.

The numeral 12' in FIG. 2 indicates the particular cylinder needle at the moment it is placed in its highest position. 1st
As clearly shown in the figures and in FIG. 2, the tip 24a of the guide groove member 24 extends completely into the area directly below the hook of the upwardly projecting cylinder needle 12', so that The cylinder needle, which continues to move in the direction ), can reliably grasp the thread 50 by the needle hook at the 12'' position.

〔Effect of the invention〕

Since the guide channel member according to the invention is open at the bottom, it is impossible for cotton waste to accumulate in the guide channel member, and furthermore, since the thread is not constrained in the downward direction, it is difficult to prevent thread knots or thick threads within the thread. There is no possibility of thread breakage in some parts. Furthermore, if the thread becomes loose, the bridge plate 36 can prevent the thread from escaping from the guide groove member.

[Brief explanation of drawings]

1 is an axial sectional view of a circular knitting machine revealing only those parts essential for understanding the invention, and FIG. 2 is a knitting machine equipped with a preferred embodiment of the thread guide according to the invention 3 is a perspective view of several cylinder needles and several dial needles of the circular knitting machine according to FIG. 1 in the area of the system; FIG.
FIG. 3 is a plan view of the illustrated thread guide; 10... Needle cylinder, 12... Cylinder needle, 14... Cylinder cam member, 16... Adjustment slide member, 18... Dial needle, 20... Thread guide, 22... Thread path, 24... Guide groove member , 24
a... Tip portion, 30... Support arm, 32... Roof-shaped metal plate portion, 34... Guide groove, 34a...
Bottom of groove, 36... Bridge plate, 38... Opening, 50
……thread.

Claims (1)

[Scope of Claims] 1. A yarn guide for knitting machines, particularly circular knitting machines equipped with combination knitting needles, in which the yarn guide 20 includes a guide groove member 24, and the guide groove member 24 opens downward. a guide groove 34 having an acute-angled cross section;
The bottom 34a of the guide groove 34 is inclined downward toward the hook of the knitting needle, and the tip of the bottom 34a is formed so as to reach below the hook of the knitting needle 12' when the tip thereof is protruding upward. , the lower side of the guide groove 34 is open, and the guide groove 34 is open.
A yarn guide for a knitting machine, characterized in that a horizontal bridge plate 36 is provided below a bottom 34a of the yarn guide. 2. The yarn path 22 is disposed upstream of the guide groove member 24 in the yarn running direction and slightly below the extension line of the bottom 34a of the guide groove 34.
Thread guide as described in section. 3. The thread guide according to claim 1 or 2, wherein the guide groove 34 is formed by a guide groove member 24 having a generally triangular shape in plan view and side view. 4. Claim 1, wherein the guide groove member 24 is formed of a curved member punched from a metal plate.
The thread guide described in any one of paragraphs 3 to 3. 5. The thread guide according to claim 1 or 4, wherein the transverse bridge plate 36 is formed by a protruding member bent from the punched and curved member. 6. The thread guide according to any one of claims 1 to 5, wherein the bottom 34a of the groove 34 forms an acute angle with the direction A of movement of the needle row 12. 7. A thread guide according to any one of claims 1 to 6, wherein the thread guide is fixedly connected to cam members 14, 16 for advancing the needle.