JPH03152250A - Method and device for forming pattern on stocking in double cylinder type circular knitting machine - Google Patents

Abstract

PURPOSE: To directly produce patterns on socks or stockings under knitting by acting tension in a specific state on the threads fed by thread guides disposed neat the feed part of a knitting machine by means of tension members. CONSTITUTION: The thread guide 10 for feeding a pattern thread 3 from the feed end 10a is provided with the tension member 11 for acting the tension on the thread 3 and pulling back the pattern thread 3 when the thread loosens. A shoulder 18 is held in a locking position when the pattern is not formed. When the knitting of the pattern begins, the shoulder 18 is moved to a release position by an air cylinder 19 and the tension is applied on the thread during the movement of the needle parting from the thread guide 10. When the needle moves toward the end 10a of the thread guide 10 m, an arm 12 is detached from the end 10a by springs 15 and 16 and the thread 3 is temporarily pulled back. When the forming of the pattern ends, the pattern thread is cut so that the pattern is produced with the influence exerted only on a small number of the needles.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for forming patterns on stockings with a double-cylinder circular knitting machine.

(Prior Art) As is well known, the patterns of socks or stockings formed with a double-cylinder circular knitting machine are created by hand embroidery, by sewing decorative patterns on socks or stockings, or by printing. .

When manufacturing socks or stockings on a single-cylinder knitting machine, the pattern is generally created by using a yarn that is a different color from the ground yarn that forms the rest of the sock or stocking, that is, the background of the pattern, during the production of the stocking or knitting machine. It is produced directly by the knitting machine by feeding a preset number of needles.

When the knitting of the row section affected by the pattern is finished, the yarn is cut by a rotating saw arranged coaxially with the needle cylinder in the needle working area.

During the formation of socks or stockings, it is very difficult to directly form a pattern with one or more colors different from the background color of the socks or stockings. This is because the rotary saw cannot be disposed between two cylinders because it interferes with the product being manufactured.

Therefore, the aim of the present invention is to provide a method by which patterns can be created in a simple manner directly on socks or stockings during production on a double-cylinder knitting machine using yarns of a different color from the rest of the socks or stockings. The purpose is to solve the aforementioned problem by doing so.

Within this aim, the object of the invention is to provide a method for forming patterns on socks or stockings on a double-cylinder circular knitting machine in such a way that only a very small number of stitches are affected; This eliminates the risk of conduction disease occurring in finished socks and stockings.

Another object of the present invention is to provide a method by which patterns with excellent finishing can be formed.

Another object of the invention is to provide a method that does not significantly reduce the productivity of modern double-cylinder knitting machines.

Yet another object of the invention is to provide an apparatus with which the method of the invention can be carried out and which can be installed without problems in a wide range of conventional double-cylinder knitting machines.

(Means for Solving the Problems) The above-mentioned aims and objectives, as well as other objects that will become clear from the following text, are achieved by the following method of creating patterns on stockings using a double-cylinder knitting machine. , the method consists of the following steps: before starting to form the pattern, move all the needles of the knitting machine to the lower needle cylinder: place the first part of the pattern on the row of socks or stockings; moving a predetermined number of needles so as to hook at least one pattern thread of a color different from the base thread used to form the sock or stocking portion adjacent to the pattern; Knitting is carried out in the feed section of the knitting machine; while the lower needle cylinder rotates about its axis, tension is exerted on the pattern yarn on the last needle moved to knit in the feed section; , and gradually withdrawing the yarn; supplying the pattern yarn again to the same needle or an adjacent needle that was moved to knit in the feed section to form a new part of the pattern row; Cutting the imitation thread; consists of each step.

The method of the present invention includes a yarn guide disposed near a feed section of a knitting machine, and a tensioning member that applies tension to the yarn fed by the yarn guide and pulls back the yarn when the yarn loosens. This is easily achieved by appropriate programming of a conventional double cylinder knitting machine equipped with a device characterized by:

Other features and advantages of the invention will become apparent from the description of a preferred embodiment of the method of the invention and of an apparatus for carrying out the method, illustrated in the accompanying drawings.

EXAMPLE Referring now to the drawings, the method of the invention includes moving all the needles into the lower needle cylinder l before creating the first W row affected by the pattern. Upstream of the feed section 2 of the knitting machine, a preset number of needles 4 are moved according to the width of the row portion on which the pattern is to be formed, so as to knit the yarn 3 fed to the feed section, that is, to hook the yarn. A needle selection is made. A thread 3 of a different color from the thread 5 used for knitting the rest of the sonks or stockings, which forms the background of the pattern, is fed to the needle 4 at the feed section 2.

During the rotation of the lower needle cylinder l about its axis 1a, the thread 3 remains hooked to the last of the needles that have been knitted at the feed section 2. The yarn 3 continues to be fed while the cylinder 1 rotates a little and the needle moves away from the feed section 2, but when the needle 4 rotates further and moves toward the feed section 2, the yarn 3 continues to be fed. is held under tension and gradually pulled back so as not to interfere with other parts of the knitting machine.

When the same needle 4 or the needle adjacent thereto is selected again upstream of the feed section 2 and moves to knit in said feed section, the previously drawn back yarn 3 is fed again to said needle; In this way, further pattern parts are formed in the next knitting row.

The last stitch of the pattern section of the previous row is joined to the first stitch of the pattern section of the next row by the thread section 3a on the back side of the knitting.

When the pattern is completed, the thread 3 is cut in a conventional manner, for example by a conventional cutting device.

The remaining part of the sonks or stockings can be formed without any problem by the thread 5 being fed from the feed section 2 to another feed section angularly remote from the axis 1a of the lower needle cylinder. The needles, or at least some of said needles, on which the pattern thread 3 is hooked in the feed section 2,
Since the yarn 5 is not hooked in the associated feed section, said yarn 5 remains floating on the side of the needle pointing in the direction of the axis 1a of the lower needle cylinder.

If interweaving between yarn 3 and yarn 5 is required at the edges of the pattern or within the pattern itself, the needles performing said interweaving may also be used for both threads of yarn 3.5. The yarn 5 is distributed so as to knit at the feed section (see Fig. 1O).

To carry out the method of the invention, a conventional thread guide 10
is used. The thread guide has its feed end 10a in the feed section of the knitting machine, through which the pattern-forming thread 3 is fed. The thread guide 10 has a tension member 11 for applying tension to the thread 3 and pulling back the supplied thread 3 when the thread loosens.

In particular, the tensioning member 11 is constituted by an arm 12 whose middle portion is pivotally connected to the support frame 13, so that the tension member 11 forms a passage 14 for the thread 3 upstream of the end tea of the thread guide IO. The end 12a of the arm 12 is connected to the end 10.
It is possible to move toward or away from a.

In order to offset the movement of the end 12a of the thread guide 10 towards the feed end 10a, elastic means, in the case shown two springs 1
5.16 acts on arm 12.

Means 17 for locking the arm 12 in the position closest to the feed end 10a of the thread guide 10 are further attached to the support frame 13. Said locking means 17 comprises a movable shoulder 18 which is moved in a controlled manner by a double-acting pneumatic cylinder 19 which is not attached to the support frame 13. The movable part 18 furthermore shows that it is 1llli from the free end 10a of the thread guide! The opening moves from a position where it prevents the reciprocating movement of the bowl 12 to a release position where it does not interfere with the reciprocating movement of the bowl 12.

When carrying out the method of the invention, the operation of the tensioning member for tensioning and pulling back the thread is as follows.

When not making patterns, the first part is in the Ronku position (No. 11)
is maintained. When starting to knit a pattern, part 18 is moved to the release position (FIG. 7) by the actuation of air cylinder 19. When the pattern-forming needles are moved away from the thread guide 10 by rotation of the lower needle cylinder, the force on the thread 3 which is greater than the force due to the springs 15, 16 causes
The arm 12 is held close to the end 10a of the thread guide.

When the needle 4 moves again towards the end 10a of the thread guide 10, the thread 3 is kept under tension and the springs 15, 16 move the arm 12 away from the end 10a in the direction I! As a result of this movement, the thread 3 is only partially pulled back (FIG. 8). When the supply of yarn 3 to the pattern-forming needles is resumed and the next knitting row is knitted, the rotation of the lower needle cylinder causes the arm 12 to move again toward the end 10a of the yarn guide 10 so that the needles are continuous. This will be done as follows (Figure 9).

(Effects of the Invention) It can be seen that the method of the invention satisfactorily achieves the intended aim, since the pattern can be created directly on the socks or stockings while the knitting is carried out with the double cylinder circular &[.

The threads that are knitted to form the pattern are cut only at the ends of the pattern, so the threads do not come off accidentally and create a double pattern that affects only a small number of needles.

This method, together with the apparatus for carrying it out, is capable of many variations, all of which are within the scope of the invention, and whose details may be replaced by technically equivalent parts. can.

In practice, the materials used and the dimensions can vary within a range according to the state of the art and its requirements.

[Brief explanation of the drawing]

1 to 4 are schematic diagrams showing the sequence of the method of the invention for forming part of a pattern in a knitting row, respectively, and FIG. 5 is a sock affected by a pattern formed by the method of the invention. FIGS. 6 to 9 are side views of the apparatus for carrying out the method of the invention during various steps of the method, and FIG. FIG. 7 is an enlarged view of a portion of a sock or stocking affected by a pattern formed according to another embodiment; l...Lower needle cylinder, 2...Feed section of knitting machine, 3...MA camphor thread, 4...
・Needle, 5... Thread for knitting parts other than the horizontal pattern, 10... Thread guide, 11... Tension member, 13... Support frame, 15, 16... Spring, 18... Movable shoulder,

Claims (1)

[Claims] 1. Before starting to form the pattern, move all of the needles of the knitting machine into the lower needle cylinder; so as to form the first part of the pattern in the knitting row of the sock or stocking; Feed the knitting machine by moving a preset number of needles and hooking at least one pattern yarn of a different color from the base yarn used to form the sock or stocking section adjacent to the pattern. while the lower needle cylinder rotates about its axis;
applying tension to the pattern yarn on the last needle moved to knit in the feed section and gradually pulling back the same pattern yarn; knitting in the feed section to form a new part of the pattern row; The pattern yarn is again supplied to the same needle or the needle adjacent thereto that has been moved so as to perform the pattern formation; and the pattern yarn is cut at the end of pattern formation; A method of forming patterns on stockings using a machine. 2. In another feed section angularly spaced from the feed section with respect to the axis of the lower needle cylinder, the ground thread is fed to the needle, and the ground thread is fed to the lower needle cylinder at the needle where the pattern thread is hooked. 2. A method according to claim 1, characterized in that the needle is suspended on the side of the needle oriented in the axial direction of the needle. 3. A yarn guide placed near the feed section of the knitting machine;
A device for creating patterns on stockings using a double-cylinder circular knitting machine, characterized in that the device comprises a tension member that applies tension to the yarn supplied by the yarn guide and pulls back the yarn when the yarn becomes loose. 4. The tensioning member comprises a movable arm forming a passage for the thread fed through the thread guide upstream of the thread guide;
4. Apparatus according to claim 3, characterized in that the movable arm is capable of moving towards or away from the feed end of the thread guide together with the passageway. 5. Apparatus according to claim 4, characterized in that the arm is movable with the passage towards the feeding end of the thread guide against elastic return means. 6. The apparatus of claim 3 further comprising controllably drivable means for locking said arm in a passageway position closest to the feed end of said thread guide.