CS516690A2 - Method of pattern forming on stockings by means of two-roller circular knitting frame and device for this method realization - Google Patents

Description

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A method for forming patternings on stockings by two-cylindrical circular knitting machines and apparatus for making the same; o, rc t. Area .technologies o. ·. - .0

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming patterns on stockings with two-cylinder circular knitting machines and apparatus for performing this method.

Background Art

As is known, patterns are created on socks and stockings made on twin-roll circular knitting machines, by hand embroidering or sewing decorative patterns on the sock: e. o_j.ejich_na.tiš.tě.n.ím ..___

Socks and stockings; typically produced by a single cylinder machine, the patterns are usually formed directly by the sock or stocking machine by supplying a predetermined number of yarns with a yarn that differs from the yarn that forms the remaining yarn. stockings ie background pattern.

At the end of the pattern knitting portion of the row, the yarn is cut by a rotary saw which is coaxially aligned with the needle cylinder in the working area of the needles. It is extremely difficult to pick up patterns of one or more colors that fail from the color of the sock or stocking background, as this sock or stocking is twisted on two-cylinder machines, since it is not possible to place the turntable between the two rollers due to the fact that the saw the finished product. - 2 - l

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problem by providing a process which makes it possible, in a simple manner, to form yarn patterns that differ in color from the rest of the sock or stocking, on socks or socks, directly during the twin-roll knitting process. Within this aim, one object of the present invention is to provide a process for cashing patterns on socks or stockings made on double-roll circular knitting machines, as well as patterns that occupy a very small number of knits to eliminate the risk of loose stitches in a sock or stocking. It is a further object of the present invention to provide a method for obtaining patterns of good quality.

It is a further object of the present invention to provide a process that does not excessively reduce the productivity of modern two-roll machines.

It is a further object of the present invention to provide a device which makes it possible to carry out the process according to the invention and which can be installed without difficulty in a large number of types of conventional twin-roll machines.

This purpose, these and other objects which result from the following, is accomplished by the method of making the stockings using two-cylinder circular knitting machines, which method is characterized in that all of the machine moves to the lower needle cylinder before starting to create the pattern a predetermined number of needles moves for knitting on a machine system for engaging with at least an exemplary yarn different in color from the background yarn used to form that area of the sock or stocking that is adjacent to the pattern, so that the first portion of the pattern receives socks or stockings tensile yarn, engaging with the last needle, shifted by entanglement on said system, is twisted and gradually removed, rotating the lower needle cylinder about its axis, this pattern thread is again introduced into the needles or into adjacent needles, moving entanglements on the system to form a new one part of a row of patterns, the pattern .nit is cut off at the end of the cash pattern.

The method according to the invention can be easily carried out by programming a known two-cylinder machine equipped with a device, characterized in that it comprises a yarn guide disposed adjacent to the machine system and a yarn tensioning and withdrawing member supplied by the conductor. permission of the yarn. Drawings

Other features and advantages of the invention will emerge from the description of the preferred, but not exclusive, embodiment of the invention and the apparatus for carrying out the method as illustrated in the example to which the invention is not limited. 1 to 4 are schematic views of the order of operations of the method according to the invention for making a pattern portion on a knitting line.

FIG. 5 is a schematic view of an enlarged section of a sock or stocking pattern formed by the method of the invention.

FIG. Figures 9 to 9 are schematic, side views of a device for carrying out the method according to the invention over the course of several years. 4. Steps, steps, steps

FIG. 10 is a schematic view of an enlarged portion of a sock or stocking provided with a pattern formed in accordance with another embodiment of the method of the invention.

According to the aforementioned figures, the method according to the invention is that all needles are inserted into the lower needle cylinder 1 before the first row of the patterned fabric is finished. The needles are selected in front of the machine system 2 to interweave the yarn 2 fed to this system, only in a predetermined number of needles 4 in accordance with the width of that portion of the series to be provided. Yarn 2) having a color other than yarn 2, which is used to knit the other portion of the sock or stocking and which forms the background of the pattern, is introduced into the needles 2 on the system 2. When the lower needle cylinder 1 is rotated around its axis 1-ar-st, The weight of the hair is fixed in the neck. The yarn feeding 2 continues during the rotation of the roller 2 which moves the needles away from the system 2, but when the needles 2 move again in the direction of the system 2 in the next revolution turn, the yarn 2 keeps sweating with tension and gradually pulling away to prevent se-tissue with other machine members;

When the same needles 2 or needles that are adjacent to them are again selected before the system 2 and are again moved into the knitting of this system, the yarn is fed back into these needles, thus forming a further pattern of the pattern on the next line of knitwear.

The last loop of the pattern of the preceding row is aligned with the first loop of the pattern section following the row of yarn section 22 on the back of the article.

When the pattern is completed, yarn 2 is cut off in a known manner, for example with the aid of a conventional clamping and cutting device. 5

The remainder of the sock or stocking is finished without any problem by the yarn 2 fed to another machine system, angularly spaced from the inlet 2 with respect to the axis 1a of the lower needle cylinder.

The needles that are intended to engage the pattern yarn 2 on the system 2, or at least some of these needles, do not catch the yarn 5 in said system, and the yarn 2 remains loose in the upward motion of the side of the needles that faces the axis 1a of the lower cylinder.

If interweaving between yarn 2 and yarn 2 is desired at the edge of the pattern or even in a separate pattern, then the needles to perform these interweaving also move into the knitting system of the yarn supplying the yarn 5 so that both yarn 2 and yarn are captured 2 (FIG. 10). A known yarn guide 10 is used to carry out the process of the invention; this yarn guide is positioned at the machine system with its transfer end 10a, and the yarn 2 is guided to form the pattern. This yarn guide 10 is provided with a clamping member 11 and a discharge yarn 2 when it is released or released.

In this example, the tensioning member 11 is formed by an arm 12 which, in its intermediate portion, is suspended from the support frame 13 so that the arm end 12a. 12 in which a yarn passage 14 is defined before the end 10 and the yarn guides 10 can move closer to or further away from the end 10a.

An elastic device is provided on the arm 12, in the case shown two springs 15 and 16, for biasing the pusher 12a towards the inlet end 10a of the yarn guide 10.

Further, on the support frame 13 there is provided a device 17 for blocking the arm 12 in its maximum approach position 6 to the yarn lead end 10a. The locking device 17 is essentially formed by a movable slide 18 which can be adjustablely moved by a double acting pneumatic cylinder 19 mounted on the carrier. of the frame 13. The slide 1S is movable from a locking position, in which it prevents the arm 12 from swinging away from the yarn guide end 10a of the yarn guide, into a release position which does not hinder the swinging of the arm 12. is following:

When the pattern is not formed, the slide 18 is held in the locking position (Fig. 6). When the pattern knitting begins, the slider 18 moves into the release position (FIG. 8) as a result of the pneumatic cylinder 19 being actuated. Meanwhile, the pattern-forming needles move from the yarn guide 10 due to the rotation of the lower needle needle. wherein the arm 12 is close to the yarn guide end 10a and overcomes the force exerted on it by the springs 15 and 16 .

When the needles 6 move again towards the end 10a of the yarn guide 10, the yarn 2 is kept under tension and is partially discharged by tilting the arm 12 away from the end 10a caused by the springs 15 and 16 (Fig. 8). Again, when the yarn 2 of the yarn forming the pattern on the subsequent row of the lower needle cylinder rotates, the yarn 12 moves again towards the end 10a of the yarn guide 10 and the cycle continues (FIG. 9).

INDUSTRIAL APPLICABILITY In practice, it has been found that the process of the present invention completes the intended purpose, since it makes it possible to finish patterns on the feet or stockings directly on their production on two-cylinder knitting machines.

Since the yarn knitted to form the pattern is cut only at the end of the pattern, it is furthermore possible to create patterns that occupy only a small number of needles without accidentally splitting the yarn. ft

The procedure thus defined and the apparatus for its implementation may be varied within the scope of the invention; individual members may be replaced by their technical equivalents. In practice, the material i. the dimensions of the individual parts according to the requirements and the state of the art.

Claims (5)

'_ _ _ _ _ _ _ _ _ _ _ _ _ _ ____ 1. A method of forming patterns on stockings by two-cylinder curved knitting machines, wherein all the machine needles are moved with a needle needle cylinder prior to forming the pattern, the predetermined number of needles being moved for knitting on the machine's meshing system. with at least one exemplary yarn that differs in color from the background yarn used for. forming the area of the sock or hosiery terry near the pattern such that a first portion of the pattern is received on a row of socks or stockings, this pattern yarn engaging with the last needle displaced into the knitted fabric of the system is rotated, while turning the lower needle The cylindrical threads are displaced into the same needles or into adjacent needles moved into the knitting on this system by the V-ZO-V-ZO. In the end, the pattern is cut at the end of the pattern. 2. A method according to claim 1, wherein the background yarn is introduced into the needles on another system which is angularly spaced from said first system with a glimpse of the lower needle cylinder axis, and. that, in the background, it is free-flowing on that side of the needles that faces the axis of the lower needle cylinder in the needles to be engaged by the yarn. '' s. 3. Patterning apparatus on stockings with twin-circular circular knitting machines, comprising a yarn guide disposed adjacent the machine system and a yarn tensioning and unloading device provided by the yarn guide after release of the yarn . 4. A device according to claim 3, characterized in that the tensioning device comprises a movable arm which defines a yarn passageway introduced by the yarn guide through the yarn guide, said arm being with this passage movable towards the inlet end of the yarn guide or from this end. Apparatus according to claim 3 and 4, characterized in that the arm is movable with said passageway. to the inlet end of the yarn guide against the resilient return device. 6. Device according to one or more of the preceding claims, characterized in that it comprises a controllable device for locking the arm in a half-maximum approach of the passage to the supply end of the conductor,