JPS6225775B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION When a group of knitting needles installed in the front and back needle beds of a flat knitting machine is subjected to a circular knitting operation based on the reciprocating sliding of a carriage, a bag knitted structure is obtained. If you knit this bag knitting by changing the knitting yarn every few courses, for example by changing the type of knitting yarn or changing the color of the knitting yarn, you can create a striped pattern along the direction of the knitting course.
You can knit a Jiyaguard pattern.

For example, when knitting a glove 1 by a glove knitting machine, i.e., a glove 1 as shown in FIG.
According to the conventional method, little finger 2, ring finger 3, middle finger 4, index finger 5, four fingers 6, thumb 7, five fingers 8,
Then, when knitting in the order of the wrist part 9, knitting from the little finger 2 to a part of the four trunks 6 with knitting yarn a,
The remaining part of the four-piece body 6 is made of different knitting yarns in several courses,
For example, knit the thumb 7 and a part of the five torso 8 following it with different colored yarns b, c, and d, and knit it again with the knitting yarn a, and then knit the remaining five torso 8. If the knitting yarns b, c, and d are sequentially knitted again, striped knitted gloves can be obtained.
When knitting is done in this way, the portions of knitting yarns a', b', c', and d' that do not form stitches between the switching parts of each knitting yarn become crossover yarns and are shown in Figures 1 and 2. As shown, it will be exposed on the outside of the glove.

Therefore, when bag knitting is performed using conventional equipment,
These crossover threads a', b', c', and d' are cut by hand after the glove is knitted, and both ends are drawn into the body of the glove to form the glove. The stitches had to be stitched, and this manual work required a great deal of effort.

Therefore, the present invention can eliminate the above-mentioned steps that occur when bag knitting a striped pattern, a jiyaguard pattern, etc. using a flat knitting machine, and can eliminate the need for bag knitting using multiple types of knitting yarns as described above. A novel knitting device for a bag knitted structure, which can mechanically process the crossover threads generated during alternating knitting or knitting of a jiya guard pattern, etc., so that they are not exposed to the surface of the bag knitted structure, at the same time as the knitting. In other words, the object is to provide a tack device for knitting halted crossover yarns, and
The gist is that a sub-jack is planted in the needle groove behind any knitting needle, and a sub-jack extrusion device that selectively acts on the sub-jack to advance the knitting needle to the tuck position. a plunger box provided on the yarn guide rail and having a yarn feeder and a recess for engaging the plunger; A pair of plungers are provided at a constant interval α along the direction, and are freely extendable.
The pair of plungers is provided with an engagement control device for selecting one of the plungers and engaging it in the recess of the thread guide carrier. It's in the device.

To explain the embodiment with reference to the drawings, the glove 1 shown in FIG. The glove 1 is made by knitting the four-piece trunk 6 and the five-piece trunk 8 into a striped pattern using knitting yarns a, b, c, and d, while tacking the knitting suspended crossover yarns using a tack device. As seen in the figure, the knitting suspended jumper yarns a', b', c', and d' are not exposed on the front side of the glove, but the knitting suspended jumper yarn tacking device according to the present invention is as follows. It is structured as follows.

That is, in FIGS. 4 to 7, 31, 31'
are a pair of front and rear needle beds of the glove knitting machine, 10 and 10' are
Knitting needles 10a' with jacks installed in each needle bed 31, 31' are jack portions. 11a,1
1b, 11c, 11d are knitting needles 10 installed in needle beds 31, 31' on both the front and back sides of this glove knitting machine.
..., 10'... groups have different knitting yarns a, b, c,
This is the yarn feeder that feeds yarn d, but the rear needle bed 31'
Among the knitting yarns 10' planted in the needle grooves in which the two knitting needles 10 ₁ ' and 10 ₂ ' for knitting the little finger side end of the glove 1 are planted, that is, the two needles at the left end in FIGS. knitting needle 1
The needle grooves 12 ₁ ′ and 12 ₂ ′ (only the needle groove 12 ₁ ′ is shown) in which the needles 0 ₁ ′ and 10 ₂ ′ are implanted are supported by an auxiliary needle bed 32 ′ attached to the needle bed 31 ′. sub jack 1
3 ₁ ′, 13 ₂ ′, each knitting needle with jack 10 ₁ ′,
10 ₂ ', and is located at the rear of the auxiliary needle bed 3.
2' supports in the needle groove 12' the tips of sub jacks 13 ₁ ′ and 13 ₂ ′, each of which has a downwardly projecting part 14 ′, and this auxiliary needle bed 32 A subjack extrusion device 20 as described below is disposed below ', supported at a suitable position on the machine frame 15 of the glove knitting machine.

That is, 16 is a lever whose base end is pivoted by a shaft 17 in a direction crossing the needle groove 12', and this lever 16 has its distal end at the position shown by the solid line in FIG. When the sub-jacks 13 ₁ ′, 13 ₂ ′ are rotated clockwise to the position shown by the chain line, the sub-jacks 13 1 ′, 13 2 ′ at the positions shown by the solid lines are pushed out to the positions shown by the chain lines, whereby the jacked knitting needles 10 ₁ ′, 1
0 ₂ ' is pushed out from the position shown by the solid line (retracted position) in FIG. , is always biased in the direction of pushing out the sub-jacks 13 ₁ ′, 13 ₂ ′, and this bias, that is, the lever 16 is prevented from acting on the sub-jacks 13 ₁ ′, 13 ₂ ′ by two locking devices. It is adapted to be selectively locked in the position (the position shown by the solid line in FIG. 5).

That is, 21 is a partially cut-out disk-shaped cam with 22 as the rotation axis and a part of the cam 21 is cut out to form a recess 21a. A trochanter 23, which is pivotally attached to the arm part, is brought into rolling contact by the action of the spring 18, and each time this cam 21 rotates once, that is, each time the trochanter 23 faces the recess 21a, Lever 16
is capable of pushing out the sub jacks 13 ₁ ′, 13 ₂ ′, and the lever 16 is able to push out the cam 21 ′.
By controlling the rotational phase of the cam 21, it is possible to displace the spring 18 between the pushing action position and the pushing non-action position. Carriage 34
It is designed so that it can rotate once in conjunction with one reciprocating movement of.

Another locking device provided opposite to the lever 16 includes a rotation stopper 26 pivoted at a proper position 25 on the machine frame 15, and a pin 27 protruding from the lever 16.
and a solenoid 29 connected to the movable iron core via the rotation stopper 26. When the solenoid 29 is deenergized, the locking device is pushed by a spring 30 and stops rotating. Even if the stopper 26 is in the locking position shown in FIG.
When the solenoid 29 is energized with the trochanter 23 facing the recess 21a of the cam 21, the solenoid 29 is kept in the locking position, which can be maintained in the non-pushing position against the action of the spring 18. , the rotation stopper 26 is rotated in the counterclockwise direction in FIG.
Due to the action of , it is possible to perform extrusion action.

With the above configuration, the sub-jack extrusion device 20 of this embodiment has the sub-jacks 13 ₁ ', 1
When pushing out the knitting needle 3 ₂ ′, the recess 21 a of the cam 21 is made to face the trochanter 23 and the solenoid 29 is energized, and the sub jacks 13 ₁ ′ and 13 ₂ ′ are When the knitting needles 10 ₁ ′, 10 ₂ ′ are moved back from the tuck position by the action of a knitting lock (not shown) acting on the knitting needles 10 ₁ ′, 10 ₂ ′, the knitting needles 10 ₁ ′, 10 ₂ ′ are The lever 16 is designed to be moved backward by the backward movement, but until this movement is performed, the lever 16 is prevented from pushing out against the sub-jacks 13 ₁ ′ and 13 ₂ ′ by the action of the cam 21 . The solenoid 29 is returned to its position and the solenoid 29
is becoming de-energized.

In addition, in the glove knitting machine equipped with the knitting yarn feed crossover yarn tack device according to the present invention, the yarn feeder 11 provided on the yarn guide rail 35 and the recess 36 for engagement with the plunger are provided. road carrier 3
7, the yarn path carriers 37 whose knitting is intermittently suspended are each provided with a yarn path entraining device 40 as described below. That is, in the glove knitting machine of the embodiment, as shown in FIG. 3, all the knitting yarns a, b, c, and d are suspended from knitting in multiple courses, respectively.
Each of the yarn path carriers having yarn feeding ports 11a, 11b, 11c, and 11d for feeding these knitting yarns a, b, c, and d, respectively, is constructed as follows according to the present invention. must be maintained.

An example of this is the yarn path carrier 3 of the yarn feeder 11a.
Taking 7a as an example, it will be explained in detail with reference to FIG. 6. In the same figure, 37a is a yarn path carrier for covering the knitting width W and reciprocating the yarn feeder 11a. The yarn path carrier 37a includes a sliding body 39a having a yarn feeding port 11a and a sliding body 41 having a recess 36a for feeding a plunger, which are dovetailed on the yarn path rail 35a.
a, and a rod 42a that integrally connects both sliding bodies 39a and 41a, and is located on one side of the needle bed 31' (top left side in FIG. 6). It is designed to be driven by a reciprocating motion over . On this plunger box 45, a pair of primary and secondary plungers 46ma, 4 are arranged for one thread path carrier 37a, that is, one sliding body 41a.
6sa, with a constant interval α between them in the longitudinal direction of the thread guide rail 35a,
It is provided. A pair of primary and secondary plungers 46
Like a known plunger, ma and 46sa are constructed so that they can be freely extended from the plunger box 45 so as to be able to be engaged with and disengaged from the recess 36a, and are always maintained by springs 47a and 47a, respectively. It is provided on the plunger box 45 in such a manner that it is always urged to the projected position by means of 47a, 47a. In addition, 48a, 49a
are a pair of thread guide stoppers fixed on the thread guide rail 35a.

Therefore, the plunger box 45
When the positive plunger 46ma is engaged with the recess 36a and the plunger box 45 is reciprocated with a (α+β) stroke between the pair of yarn path stoppers 48a and 49a, the yarn feeder 11a is opened as in the conventional device. Then, a stroke of (α'+β') is carried out between the yarn guide stoppers 48a and 49a, and the knitting needle 1
It is designed to be able to perform bag knitting by circulating the yarn to 0 and 10', but the sub-plunger 46sa
Since only a stroke of β is reciprocated between the pair of thread guide stoppers 48a and 49a, the sub-plunger 46sa is engaged with the recess 36a of the thread guide carrier 37a, and the thread guide carrier 37a is moved back and forth.
The reciprocating motion of the plunger box 45 (α+
β), the thread path carrier 3
7a, when compared with the above case in which this is linked via the forward plunger 46ma, in the forward stroke (the rightward stroke in the upper part of FIGS. 4 and 6), there is a delay in the phase of α, and in the backward stroke (the rightward stroke in FIGS. 4 and 6), 4 and 6 (upper left stroke in Figures 4 and 6), with the phase advance of α, only a stroke of β' moves the slider 41a between the yarn path stoppers 48a and 49a, closer to the yarn path stopper 48a. Therefore, the yarn feeder 11
A is the left end of the needle beds 31, 31' in FIGS. 4 and 6, and only the stroke of β' is interlocked with the needle beds 31, 31'.

And the pair of main and sub-plungers 46
For ma, 46sa, select only one of them and place it in the recess 3 of the thread path carrier 37a.
6a, the following engagement control device 50a is provided. That is, the engagement control device 50a of this embodiment has the function of preventing the primary and secondary plungers 46ma, 46sa from entering the recess 36a of the yarn path carrier 37a between the pair of yarn path stoppers 48a, 49a. The thread guide rail 35a is displaceably provided between a position (the position shown by the double-dashed line in FIG. 6) and an inactive position (the position shown by the solid line in FIG. 6) that allows the entry. The control of this embodiment includes a parallel control bar 51a and a control bar drive device for selectively displacing the control bar 51a to one of the two positions. The bar 51a is connected to its two points 56 by a pair of parallel links 54a and 55a, which are pivoted at appropriate positions 52a and 53a, respectively, on the machine frame (not shown) of the knitting machine.
A, 57a are pivotably supported bars, and a driving device for controlling the control bar 51a between the working position and the non-working position constantly moves the control bar 51a to the plungers 46ma, 46.
Spring 58a biased to a non-acting position relative to sa
and a solenoid 59a disposed opposite to the link 54a to drive the control bar 51a to the operating position with respect to the plungers 46ma, 46sa against the spring 58a. When the solenoid 59a is energized, it is controlled against the spring 58a to the operating position shown by the two-dot chain line, and when the solenoid 59a is deenergized, it is restored to the non-acting position shown by the solid line by the action of the spring 58a. The control bar 51a
When the plunger box 45 is operated back and forth from the left end position in FIG. 6 (the position where the normal plunger 46ma is above the yarn path stopper 48a) with the plunger box 45 controlled to the operating position,
The tips of the plungers 46ma and 46sa (in the case of the embodiment, the illustrated trochanter R) are in contact with the control bar 51a, and the main and sub plungers 46ma and 46sa
However, the yarn feeder 11a cannot engage with the recess 36a of the yarn guide carrier 37a located at the left end (positioned by the chain line in FIG. 6).
However, when the control bar 51a is controlled to the inactive position, the plunger box 4
5 is reciprocated from the left end position in FIG.
This thread guide carrier 37
The yarn feeder 11a of a is connected to the plunger box 45.
In conjunction with the reciprocating motion of (α+β), (α′+
β') is reciprocated, and the yarn feeder 11 of the yarn path carrier 37a
According to a, knitting yarn is supplied to the knitting needles 10 and 10' covered by the stroke (α'+β'), and when the control bar 51a is controlled to the operating position, Move the plunger box 45 forward from the left end position in FIG.
After the main plunger 46ma passes through the recess 36a of the thread guide carrier 37a at the left end rest position, the sub plunger 46sa still moves into the recess 36.
Until the a position is reached, the control bar 5
1a is controlled to the inactive position, only the secondary plunger 46sa on the trailing side when the plunger box 45 moves forward is connected to the thread path carrier 37a.
During the reciprocation of the stroke (α+β) of the plunger box 45, the thread guide carrier 37a is interlocked with the reciprocation of the stroke β of the sub-plunger 46sa.
The needles 10, 10' are reciprocated by a stroke of β', and depending on the yarn feeder 11a of the yarn path carrier 37a at this time, the knitting needles 10, 10' are moved only in the range covered by the stroke β'. , the knitting yarn is supplied in the latter half of the forward movement of the carriage or in the early stage of the backward movement of the carriage.

The same applies to the yarn path carriers 37b, 37c, and 37d, which are provided with the yarn feeders 11b, 11c, and 11d, respectively.

Therefore, in the device according to the present invention, during one reciprocating movement of the plunger box 45 as described above in an arbitrary course, the positive plunger 46m is moved into the recess 3 of the thread path carrier 37.
6, the sub plunger 46s is engaged with the recess 36, and immediately before the yarn feeder 11 of the yarn guide carrier 37 reaches the yarn feeding position with respect to the knitting needles 10 or 10', for example, the sub plunger 13 ₁ ' , 13 ₂ ', the leftmost knitting needle 10
₁ ′, 10 ₂ ′ are pushed up to the tuck position, the knitting yarn of the yarn feeder 11 is supplied to the knitting needles 10 ₁ ′, 10 ₂ ′ in this course, and it is also
₁ ′, 10 ₂ ′.

Since the apparatus for tacking knitting suspended jumper yarns according to the present invention has the above-described configuration, it is possible to tack knitting suspended jumper yarns in the following manner.

That is, in the glove knitting machine of the embodiment, the knitting needles 10, 1 installed in the front and rear needle beds 31, 31'
Since the sub jacks 13 ₁ ′ and 13 ₂ ′ are arranged on the upper left end side of the needle bed 31 ′ on the rear side of the needle bed 31 ′ in FIG. ′、b′、
c' and d' can be automatically processed so as not to be exposed outside the glove during knitting as described below.

That is, when knitting the glove 1 as described above, when knitting each finger bag 2 to 5 and the first part of the four trunks 6, the yarn feeder of the knitting yarn a is controlled by the action of the engagement control device 50a. Among the pair of main and sub-plungers 46am, 46as disposed opposite to the thread path carrier 37a equipped with 11a, the main plunger 46am
Select and insert it into the recess 3 of the thread path carrier 37a.
6a and the thread guide carrier 37a,
If the entire stroke of (α'+β') is reciprocated, the above sections 2 to 6 can be knitted with knitting yarn a, and the four-body 6 with knitting yarn a switched to knitting yarn b
When knitting the portion, the pair of primary and secondary plungers 46 is activated by the action of the engagement control device 50b.
mb, 46sb, select the positive plunger 46mb and insert it into the recess 36b of the thread guide carrier 37b.
, and feeds the knitting yarn b to the knitting needles 10 and 10' (to cause bag knitting), and at the same time, every few courses of bag knitting using this knitting yarn b, for example, one course in every three courses. During one reciprocating operation of the plunger box 45, the main and sub-plungers 46 for entraining the thread path carrier 37a
The engagement control device 50 disposed at ma, 46sa
a, the yarn path carrier 37a is caused to reciprocate once (stroke β') by the sub plunger 46sa after the knitting operation by the knitting yarn b is completed, and the extrusion device of the sub jacks 13 ₁ ′ and 13 ₂ ′ is 20, the leftmost knitting needles 10 ₁ ', 10
If ₂ ' is pushed to the tuck position, in every second course of the bag knitting course using knitting yarn b, that is, during the knitting operation, the crossover yarn a', which is not knitting The knitting needles 10 ₁ ′ and 10 ₂ ′ immediately after knitting the knitting material b are opened and tacked.

Therefore, in this way, the knitting needles 10 ₁ ′, 10
When the crossing yarn a' is tacked at _{the 2} ', the tacked crossing yarn a' is knitted by the knitting needles 10 of a set of two when the next course is knitted with the knitting yarn b fed from the yarn feeder 11b. _{1 ′} , 10 ₂ ′, and as shown in FIG.
It is engaged with the sinker loop of this course (on the left side in the figure), and in the next course of knitting yarn b, it is engaged with the sinker loop on the right side of knitting needle 10 ₁ '.

When the above-mentioned tack of the crossing yarn a' by the yarn feeder 11a is performed every second course of knitting courses using the knitting yarn b, as shown in FIG. 7, the knitting needles 10 ₁ ', 10 ₂ ' The knitted fabric made of knitting yarn b is formed by knitting yarn b. The jumper yarn a' is entwined in a zigzag shape with the sinker loop of the knitted fabric made of knitting yarn b on both sides of the wale, and the jumper yarn a' , it is possible to obtain a knitted fabric in which the knitting yarn b does not appear on the front side of the bag knitted fabric, but is fixedly positioned on the back side of the knitted fabric made of knitting yarn b.

In the above embodiment, the crossover yarn a' is passed through two knitting needles 10 ₁ ',
10 ₂ ', but in other embodiments, the same method as above was used to tack the crossover thread a' on two knitting needles 10 2 ' in every other course.
₁ ', ₁₀₂ ', and in other embodiments, the same method as above is used to tack the crossover thread a for every second course.
may be tacked on only one knitting needle 10 ₁ ′, and in further embodiments, two or one knitting yarn 10 ₁ ′, 1 may be tacked on every second course.
0 ₂ ′ or 10 ₁ ′ may be tacked with the crossing yarn a′ (not shown). The number of courses to tack 10 ₁ ′, 10 ₂ ′, etc. and the number of knitting needles 10 ₁ ′, 10 ₂ ′, to tack this crossover thread a′ are not limited to the above embodiments, but may be can also be selected arbitrarily.

In addition, in the above embodiment, the rear needle bed 3
Sub jacks 13 ₁ ′ and 13 ₂ ′ are provided at the yarn feeder 11 ′, and during one reciprocating movement of the carriage, the yarn feeder 11 b
After the knitting yarn b is fed to the rear two knitting needles 10 ₁ ′ and 10 ₂ ′ to which the knitting yarn b is first supplied, the crossover yarn is
Although the example is shown in which the needle a' is configured to be tacked, in other embodiments, the front needle bed 3
1, and by the same operation of the yarn feeder 11a as described above, that is, during its backward movement, the knitting yarn b is supplied to the front knitting needles 10 ₁ and 10 ₂ last by the yarn feeder 11b. On the other hand, the structure may be such that the crossover yarn a' is tacked before the knitting yarn b is fed.

Further, according to the tuck device of the present invention, in the same manner as described above, while the four-body trunk 6 portion of the glove 1 of the embodiment is knitted with the knitting yarns c and d, and the five-body trunk 8 portion is knitted with the knitting yarn. While organizing in a, b, c and d,
Knitting yarns a', b', c', and d', which are alternate yarns that do not form stitches, are used to knit stitches with other knitting yarns in the same manner as the above-mentioned crossover yarn a'. One to several knitting needles 10 on one end side of the needle bed in the knitting needle group
₁ ′, 10 ₂ ′... or 10 ₁ , 10 ₂ ... are tacked in any course, and portions of knitting yarns a', b', c', and d' alternately serve as crossing yarns in each part of the glove 1. Then, intertwine them in a zigzag shape on the back side of the bag knitted fabric, and these crossover threads a′, b′, c′, and d′ are
It will be readily understood that the striped portions of the glove can be knitted mechanically so that they do not appear on the surface of the knitted fabric.

The tack device for knitting suspended jumper yarns according to the present invention has been explained using an example of striped pattern knitting by a glove knitting machine, but according to the knitting stop jump yarn tack device according to the present invention, it can be used not only for gloves. When knitting any bag knitted structure using a flat knitting machine, when knitting a striped pattern or a jacquard pattern using multiple knitting yarns, the knitting is paused between multiple courses by carrying the yarn path of any knitting yarn. In some cases, it is possible to knit a crossover yarn made of the knitting yarn that does not form a stitch and mechanically tucks it during the knitting so that it is not exposed for a long time to the outside of the bag-knitted fabric. According to the tack device of the present invention, it is possible to wrap the crossing yarn and wrap it around the sinker loop of the bag-knitted structure from the back side of the knitted fabric. In this way, it is possible to automatically dispose of the knitting yarn under the needle loop so that it does not appear outside.

Thus, according to the tack device of this invention,
The tacking device of the present invention can perform tack processing without affecting the pattern at all by using knitting halt jump yarns. , apart from the plunger for knitting operation,
Since the plunger is provided with a constant interval (phase shift) α between the plunger and the plunger, the yarn feeding operation during knitting can be carried out without stopping the yarn feeding operation.
In any course during knitting, it is possible to tack the crossing threads during knitting suspension.

In the above embodiment, the control bar 51 and the engagement control device for selecting one of the pair of plungers provided at a constant interval α and engaging it in the recess of the thread guide carrier are provided. Although we have shown an example of a configuration with a displacement drive device,
This engagement control device is not limited to the embodiment described above, and in other embodiments, a pair of plungers that can be freely retracted from a plunger box may be used, for example, in Japanese Patent Application Laid-Open Nos. 56-85449 and 56 −
Needless to say, it may be controlled by a control device such as that disclosed in Japanese Patent No. 140141.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a glove knitted by a conventional device, Fig. 2 is an organizational chart showing the knitting-stopping thread portion of the same glove, and Fig. 3 and subsequent figures show an embodiment of the present invention. , FIG. 3 is a front view of a glove in which the crossover thread has been processed by the tuck device of the present invention, FIG. 4 is an explanatory diagram of the operation of the tack device, and FIG. FIG. 6 is a front view of the thread guide carrier and its entraining device, and FIG. 7 is an organizational chart showing the knitting-pausing crossover thread portion of the glove shown in FIG. 3. It is. a, b, c, d... knitting yarn, a', b', c', d'...
Knitting stop jump yarn, 10, 10 ₁ , 10 ₂ , 10
₁ ', 10 ₂ '...knitting needles, 11a, 11b, 11c,
11d... Yarn feeder, 12... Needle groove, 13 ₁ ', 13
₂ '...Sub jack, 20...Sub jack extrusion device, 35, 35a...Thread guide rail, 36,
36a, 36b... recess, 37, 37a, 37b
...Thread path carrier, 40...Thread path entrainment device,
45...Plunger box, 46m, 46
ma, 46mb...positive plunger, 46s, 46
sa, 46sb... Vice plunger, 50, 50
a, 50b...Engagement control device, 51, 51a...
control bar.

Claims (1)

[Scope of Claims] 1. A sub-jack extrusion device for planting a sub-jack in a needle groove behind an arbitrary knitting needle and selectively acting on the sub-jack to advance the knitting needle to a tuck position. a plunger box provided on the yarn guide rail and having a yarn feeder and a recess for engaging the plunger; In order to provide a pair of plungers that can be retracted and retracted at a constant interval α along the direction, and to select one of the plungers and engage it in the recess of the thread path carrier. 1. A tuck device for a knitting stop jump yarn, characterized in that it is provided with an engagement control device. 2. The sub-jack pushing device includes a lever whose base end is pivotally supported and whose free end side acts to push out the rear end of the sub-jack, a spring which constantly biases this lever in the direction of pushing out the sub-jack; The knitting suspended jump yarn according to claim 1, further comprising a cam that acts on the lever and displaces the lever between a push-out action position and a push-out non-action position against the spring. tack device. 3. The sub-jack pushing device includes a lever whose base end is pivotally supported and whose free end side acts to push out the rear end of the sub-jack, a spring which constantly biases this lever in the direction of pushing out the sub-jack, and this lever. a cam which, when engaged with the free end of the lever, pushes the lever against the spring and displaces the lever between a pushing-out position and a pushing-out non-working position; A knitting stop jump yarn tucking device according to claim 1, comprising a stopper that can be engaged and detached from the stopper, and a solenoid that can engage and detach the stopper. 4. An operating position in which the engagement control device for selecting one of the pair of plungers to engage with the recess of the thread guide carrier prevents the plunger from entering the recess of the thread guide carrier. a control bar parallel to the yarn guide rail, the position of which is freely displaceable between 4. A tacking device for knitting suspended jump yarns according to any one of claims 1 to 3, further comprising a control bar drive device for displacing the knitting stop jump yarn. 5. The knitting stop transition according to claim 4, wherein the control bar is a bar whose two points are pivoted by a pair of parallel links pivoted at appropriate positions on a machine frame of a knitting machine. Thread tack device. 6. The drive device for the control bar is comprised of a spring that constantly biases the control bar to a non-active position with respect to the plunger, and a solenoid that drives the control bar to a functional position with respect to the plunger against the spring. A tack device for knitting suspended jumper yarns according to claim 4. 7. The yarn guide carrier is composed of a pair of sliding bodies dovetailed onto the yarn guide rail, and a rod connecting the two sliding bodies, and the yarn feeder is attached to one of the sliding bodies. 7. A knitting stop jump yarn tucking device according to any one of claims 1 to 6, wherein the recess for engaging the plunger is formed in the other sliding member.