KR101414028B1 - Method for preventing ravel of knitting fabric - Google Patents

Abstract

(assignment)
The present invention provides a method of preventing loosening of a knitted fabric which can be more simply and reliably prevented from loosening the knitted fabric.
(Solution)
After knitting a knitted fabric by using a flat knitting machine which cuts a knitting yarn extending from a knitted fabric knitted fabric in a needle bed to a yarn feeder 9 and using a knitting machine capable of transferring stitches between front and rear needle beds, And a loosening preventing process is applied to the end stitches 10 of the knitting fabric. The method for preventing loosening of the knitted fabric includes the following steps? To?. A step of newly knitting the stopping stitches 12 on the end stitches 10 joined to the needle beds; A step of cutting the knitting yarn extending from the stopping stitches 12 toward the feed port 9 by the knitting-and-threading mechanism 5; Step of removing the cut end 12e of the stopping stitch 12 from the end stitch 20 by moving the stopping stitch 12 from the position at the time of knitting.

Description

{METHOD FOR PREVENTING RAVEL OF KNITTING FABRIC}

The present invention relates to a method for preventing loosening of a knitted fabric in which knitted fabric is not loosened from a terminal stitch of a knitted fabric after a knitted fabric is knitted using a weft knitting machine.

It is necessary to cut the knitting yarn extending from the feeding port of the horizontal knitting machine in order to take out the knitted fabric from the horizontal knitting machine after knitting the knitted fabric using the flat knitting machine. Patent Document 1 discloses a weft knitting machine having a knitting-out mechanism (knitting and cutting mechanism) for cutting the knitting yarn.

Japanese Patent No. 4015980

However, when cutting the knitting yarn to take out the knitting fabric from the knitting machine, the knitting yarn extending from the longitudinal stitch to the yarn feeding knitting yarn is not immediately cut after knitting the longitudinal stitch of the knitting fabric. This is because when the cutting end portion of the knitting yarn is pulled, the stitches are successively unwound from the longitudinal stitches sequentially. Thus, conventionally, the knitting yarn is cut after 10 to 20 courses of knitting are continuously performed on the end stitches. By doing so, even if the cut end portion is pulled out, the stitch of the knitted fabric portion is loosened firstly, so that the stitches of the knitted fabric that is the product can be prevented from being loosened.

However, when the cut end portion is pulled strongly, the stitch of the knitted fabric portion is loosened, and the stitch of the knitted fabric may be loosened. If the knitted fabric portion is further knitted against such a problem, the possibility that the knitted fabric portion is loosened can be reduced. However, in this case, there arises a problem that productivity of the knitted fabric is deteriorated by knitting a large amount of the knitted fabric portion.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of preventing loosening of a knitted fabric which can be more simply and reliably prevented from loosening.

The present invention relates to a knitting machine comprising at least a pair of front and rear needle beds, a yarn feeder for feeding yarn to a knitting needle of the needle bed, Knitting machine capable of transferring stitches between front and rear needle beds is used to knit a knitted fabric by knitting a knitting yarn, And then performing a loosening preventing process on the end stitch of the knitted fabric. The method for preventing unwinding of a knitted fabric according to the present invention is characterized by comprising the following steps? To?.

[Process alpha] ... The stitching stitch is newly knitted on the end stitches coupled to the needle bed.

[Process beta] ... The knitting yarn extending from the stopping stitch toward the delivery port is cut by the knitting-and-threading mechanism.

[Process γ] ... By moving the stopping stitch from the position at the time of knitting, the cut end portion of the knitting yarn is pulled out from the end stitch.

Here, the moving direction of the stopping stitch in the step y is not particularly limited, and it may be moved in any one of the knitting widthwise directions (lengthwise direction of the needle bed). Further, the movement of the stopping stitch in the step y is carried out by transferring the stopping stitch from one (one) needle bed to the other (the other) needle bed, and racking the other needle bed in either direction racking, and then the stopping stitches are repeatedly returned from the other needle bed to one of the needle beds. By doing so, the cutting end portion of the knitting yarn can be reliably pulled out from the longitudinal stitch without damaging the knitting yarn. The stopping stitch may be moved by moving the stopping stitches from one needle bed to the other needle bed and then raking the other needle bed in any one of the right and left directions at once. In this case, the cut end portion of the knitting yarn can be pulled out from the longitudinal stitch in a short time.

As a form of the method for preventing loosening of the knitted fabric according to the present invention, in the step " a ", a form for knitting a stitch for holding made of a hook loop in a needle needle of a needle bed is knitted . In this case, after step < RTI ID = 0.0 > y, < / RTI > the knitted fabric can be pulled out of the weft knitting machine by removing the stitches for support from the needle bed.

As one form of the method for preventing loosening of the knitted fabric in the present invention, the following [1] to [3] are performed before the knitting stitches are knitted in Step a, .

[1] A transfer stitch for knitting a first new stitch drawn from a stitch stitch is attached to a needle bed to which a stitch stitch is attached, do.

[2] The end stitch is transferred to a knitting needle that is adjacent to the knitting needle to which the first new stitch is engaged in the knitting direction of the first new stitch (the moving direction of the knitting needle when knitting the first new stitch).

[3] The second new stitch continued in the wale direction of the end stitch is knitted in the knitting direction same as the knitting direction of the first new stitch.

With the above-described [1] to [3], in the knitting step, the first new stitch is engaged with one of the knitting needles adjacent to each other, and the second new stitch is engaged with the other knitting needle. However, in practice, these first new stitches and second new stitches are loosened on the needle beds and connected to the end stitches (refer to T3 'in Fig. 2 of the second embodiment described later). As a result, the end stitches, which are larger than the knitting time, are joined to the two knitting needles.

If the end stitches are joined to the two knitting needles by performing the above-described steps [1] to [3] in the step?, Even if the stopping stitch subsequent to the ending stitch is knitted in the step?, The ending stitch is still joined to one knitting needle State. Here, after the process [gamma], the end stitch is pulled out from the needle bed. By doing so, the knitted fabric can be taken out of the weft knitting machine.

According to the method for preventing unwinding of the knitted fabric of the present invention, the cut end portion of the knitting yarn extending from the stopping stitch knitted continuously in the wale direction of the end stitch is pulled out in the pulling direction of the stopping stitch, can do. This mechanism will be described with reference to Fig. 3 (A) is a view showing a state in which the stitching stitches 31 are knitted in the wale direction of the longitudinal stitches 30 and the stitch state when the cut end portions 30e of the knitting yarns are not pulled out from the longitudinal stitches 30 . As shown in Fig. 3 (A), the stitch on the upper side of the stitch on the lower side is drawn out from the front side of the paper surface, and the stitch on the lower side is supported by the stitch on the upper side . When the cutting end portion 30e is pulled from this state, the stopping stitches 31 can not support the shape, and are pulled toward the front side of the ground, and are disengaged from the longitudinal stitches 30. The stopping stitches 31 for supporting the shape of the ending stitches 30 disappear when the stopping stitches 31 are pulled out of the ending stitches 30. Thus, the ending stitches 30 are separated from the stitches at the lower end It falls out. By repeating this, knitted fabrics are released. 3 (B), when the cut end portion 30e of the knitting yarn is pulled out from the longitudinal stitch 30 by the loosening prevention method of the knitted fabric of the present invention, even if the cut end portion 30e is pulled out, Since the knitting yarn is entangled at the position indicated by the color arrow, the shape of the longitudinal stitches 30 is supported, and the longitudinal stitches 30 do not come off from the stitches on the lower side. As shown in Fig. 3 (B), once the cut end 30e is pulled out from the longitudinal stitch 30 in the pull-out direction, it is possible to return the knitted fabric to the state shown in Fig. 3 So that the knitted fabric is not loosened naturally from the state shown in Fig. 3 (B).

According to the unwinding prevention method of the knitted fabric of the present invention for knitting the support stitch before knitting the stop stitch, the cutting end of the knitting yarn can be easily pulled out from the vertical stitch when moving the stop stitch. This is because the position of the end stitches on the needle bed is fixed by the supporting stitches, so that when the stitching stitch formed in the wale direction of the end stitch is moved, the stitches do not stick to the movement of the stitching stitches It is to be able to do. This will be described in detail in the first embodiment which will be described later.

According to the method for preventing loosening of the knitted fabric of the present invention in which the stitches are stitched to the two knitting needles by means of split stitching before knitting the stop stitches, It becomes easy to pull out from the end stitch. This is because even if the stopping stitch is continuously knitted in the wale direction of the end stitches coupled to the two knitting needles, the end stitches are still joined to one knitting needle so that the position of the end stitches in the needle bed is fixed . Also, since the loop diameter of the longitudinal stitches coupled to the two knitting needles is larger than that of the ordinary stitch, the cut end of the knitting yarn is physically easy to be pulled out. This will be described in detail in the second embodiment which will be described later.

Brief Description of Drawings Fig. 1 is a knitting process diagram of a method for preventing loosening of a knitted fabric according to Embodiment 1. Fig.
Fig. 2 is a knitting process diagram of a method for preventing loosening of a knitted fabric according to the second embodiment.
3 (A) is a loop diagram showing the state of the stitch when the cut end portion of the knitting yarn is left without being pulled out from the longitudinal stitch, (B) is a state showing the state of the stitch when the cut end portion is pulled out from the longitudinal stitch Fig.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a method for preventing loosening of a knitted fabric according to the present invention will be described with reference to the drawings. In the knitting described in the embodiment, the front needle bed (hereinafter referred to as FB), the back needle bed (hereinafter referred to as BB) and the yarns fed to the FB and the BB, which extend in the lateral direction and face each other in the front- A two bed transverse knitting machine capable of transferring stitches between the FB and the BB and racking the BB left and right, Knitting machine) was used. The two-bed flat knitting machine is provided with a knitting-out mechanism for cutting a knitting yarn extending from the knitted fabric to be coupled to the needle bed to the yarn feeder. Of course, the flat knitting machine to be used is not limited to the two-bed flat knitting machine, but may be a flat knitting machine having a needle bed dedicated to transfer or a four-bed flat knitting machine.

≪ Embodiment 1 >

A method of preventing loosening of the knitted fabric according to Embodiment 1 will be described with reference to a knitting process chart of Fig. "Alphabet + number" in the left column (left column) in FIG. 1 indicates the number of the knitting process, and arrows in the right and left directions in the right column indicate the knitting direction. In the middle column of Fig. 1, there is schematically shown actual knitting in each knitting process.

S0 shows a state in which the end stitch 10 of the knitting fabric is joined to the knitting needle 2 of the BB. Further, in S0, the feeding opening 9 used for knitting the longitudinal stitch 10 is located on the right side of the ground surface (paper surface) than the longitudinal stitch 10. The end stitches 10 are literally the last stitches of the knitting fabric. All the knitting needles other than the knitting needle 2 to which the end stitches 10 are joined are all needle coins.

In S1, the yarn feeder 9 is moved to the left side of the paper surface, and the supporting stitches 11 made of hook loops are knitted on the knitting needles 3 (co-needle) of BB. In S1, following the knitting of the supporting stitches 11, the stopping stitches 12 continuous in the wale direction of the longitudinal stitches 10 joined to the knitting needles 2 of the BB are knitted (step? . Also, knitting of the supporting stitches 11 in S1 is not essential and can be omitted. However, by forming the support stitches 11 as described later, it is possible to smoothly prevent the loosening of the knitted fabric. In the case of knitting the supporting stitch 11, the knitting position is not limited to the knitting needles 3 of BB.

In S2, the knitting yarn extending from the stopping stitches 12 to the yarn feeding port 9 is cut by the knitting-threading mechanism 5 (corresponding to step beta of the present invention). A known arrangement as disclosed in Japanese Patent No. 4015980 can be used as the one-mail sending-out mechanism 5.

In S3, the stopper stitches 12 knitted in S1 are moved in the knitting width direction from the position of the knitting needle 2 of the BB (i.e., the position where the stopping stitches 12 are knitted in S1). The moving direction of the stopping stitch 12 is not limited to the right direction of the paper in Fig. 1, but may be the left direction of the paper. In this embodiment, the stopping stitches 12 are moved to the knitting needles 4 of the BB via the knitting needles of the FB. By moving the stopping stitches 12 from the position at the time of knitting as described above, the cut end 12e of the knitting yarn breaks through the longitudinal stitches 10 as indicated by S3 'so that the fastening stitches 12 ) Is pulled out from the longitudinal stitch 10) (corresponding to the process? Of the present invention). At this time, by forming the supporting stitches 11 in S1, it is easy to pull out the cut end portions 12e from the longitudinal stitches 10. Since the knitting yarn extending from the supporting stitch 11 to the stopping stitch 12 is caught by the vertical stitch 10 to fix the position of the vertical stitch 10 on the needle bed as shown in S3, So that the end stitches 10 do not stick to the movement of the stitches 12.

Here, if the cut end 12e can not be pulled out of the longitudinal stitch 10 by one movement of the stop stitch 12, the movement of the stop stitch 12 can be repeated until it is lost. By gradually moving the stopper stitches 12 in this way, excessive tension can be prevented from acting on the knitting yarn, and the cut end portion 12e can be pulled out of the longitudinal stitches 10 without worrying about yarn breakage. If the cutting length of the knitting yarn is short, the cut end portion 12e may be simply taken out of the longitudinal stitch 10 by simply transferring the stopping stitch 12 from BB to FB.

By cutting out the cut end 12e from the end stitch 10 by the knitting process described above, the knitted fabric can be prevented from being unwound as described above using Fig. 3 (B). In the event that the knitted fabric is finally pulled out from the weft knitting machine, the only supporting stitch 11 remaining on the knitting needle 3 of the BB may be taken out.

As a method for pulling the cut end portion 12e from the longitudinal stitch 10, there is a method in which the stop stitch 12 is stored in the FB in addition to the method of gradually moving the stop stitch 12, BB (if the FB is rackable, the FB may be used). In the case of using a strong knitting yarn which is difficult to break, in this method, the cutting end 12e can be pulled out from the longitudinal stitch 10 in a short time.

≪ Embodiment 2 >

In the second embodiment, the end stitch is fixed at a predetermined position of the needle bed by performing a split stitch, and when the stop stitch is moved, the cut end of the knitting yarn is easily pulled out from the end stitch. The unwinding prevention method will be described with reference to Fig. The method of FIG. 2 is the same as that of FIG.

2, a state in which the end stitches 20 are joined to the knitting needles 3 of the FB is shown. In this state T1, the end stitches 20 are transferred to the opposing stitches 3 of the BB and the knitting needles 3 of the FB stitches 20 to which the end stitches 20 are coupled are transferred from the end stitches 20 A split stitch is knitted to knit the drawn first new stitch 21.

At T2, the end stitches 20 transferred to the knitting needle 3 of BB by the split stitch are transferred to the knitting needle 2 of the FB. At the time T3, after the feeding opening 9 is moved to the right side of the sheet, the second new stitches 22 (22) continue in the wale direction of the longitudinal stitches 20 when the feeding opening 9 is moved to the left side of the sheet. ). Here, by making the transfer direction of the end stitches 20 at T2 and the knitting direction of the second new stitches 22 at T3 equal to the knitting direction of the first new stitches 21, FB The stitches 21 and 22 coupled to the knitting needles 3 and 2 of the knitting needles are loosened on the needle bed and connected to the end stitches 20 one by one. As a result, one large longitudinal stitch 20 is joined to the two knitting needles 2 and 3 as shown at T3 '.

At T4, the feeding opening 9 is moved to the right of the paper to knit the stopping stitches 23 continuing in the wale direction of the longitudinal stitches 20 joined to the two knitting needles 2, 3 of the FB. In this embodiment, since the stopping stitches 23 are knitted by the knitting needles 2, the stitch stitches 20 are still joined to the knitting needles 3. The stopping stitches 23 may be knitted by the knitting needles 3. In this case, the stitches 20 are still joined to the knitting needles 2. [

At T4, after the stopping stitches 23 are knitted, the knitting yarn ending mechanism 5 cuts the knitting yarns extending from the stopping stitches 23 to the feed opening 9. Thereafter, the cut end portion 23e of the knitting yarn can be pulled out of the longitudinal stitch 20 by moving the stopping stitches 23 in either of the knitting widthwise directions as in S2 of the first embodiment. At this time, since the end stitch 20 is engaged with the knitting needle 3 of the FB and the position thereof is fixed, the end stitch 20 is not stuck on the movement of the stop stitch 23, It is easy to pull it out from the terminal stitch 20. Since the loop diameter of the longitudinal stitch 20 is larger than that of the ordinary stitch by joining the longitudinal stitches 20 to the adjacent two knitting needles at the time T3 ', the cut end portion 23e is pulled out from the longitudinal stitches 20 easy.

According to the knitting process described above, it is possible to prevent loosening of the knitted fabric as in the first embodiment. Finally, when the knitted fabric is taken out of the weft knitting machine, the only remaining end stitches 20 on the knitting needles 3 of the FB can be pulled out.

In addition, it is also possible to knit stitches less frequently (for example, 1 to 5 times) than the conventional stitches of the knitted fabric before carrying out the method of preventing loosening of the knitted fabric of the present invention shown in Embodiments 1 and 2 . In this case, the method of preventing loosening of the knitted fabric of the present invention is carried out by using the last stitch of the stitch knitting section as the end stitch.

1 to 4:
5: One-way mission organization
9: Feeding gear
10: Stitch stitch 11: Support stitch
12: Stitch for stop 12e: Cutting end
20: Staple stitch 21: First new stitch 22: Second new stitch
23: stop stitch 23e: cut end
30: Stitch stitch 31: Stitch for stopping 30e: Cutting end

Claims (3)

A yarn feeder for feeding a knitting yarn to a knitting needle of a needle bed at least at a pair of front and rear sides, a knitting yarn extending from the knitting fabric knitted at the needle bed to the yarn feeder, After a knitting machine is knitted by using a knitting machine capable of transferring stitches between front and rear needle beds, a knitting machine having a knitting machine mechanism A method for preventing loosening of a knitted fabric which performs a loosening preventing process on a stitch (terminal stitch) of a knitted fabric,
A step of newly knitting a stopping stitch to the above-mentioned longitudinal stitches coupled to the needle bed,
A step of cutting the knitting yarn extending from the stopping stitch toward the feed opening by the knitting-and-threading mechanism;
By moving the stopping stitch from the position at the time of knitting, a step of removing the cut end of the knitting yarn from the end stitches
Wherein the knitting yarn is loosely knitted.
The method according to claim 1,
In the step " a ", a supporting stitch is formed by hooking loops on the needles of a needle bed before knitting of the stopping stitches,
And after the step &thetas;, the supporting stitch is taken out from the needle bed.
The method according to claim 1,
In the step [alpha], before the stopping stitch is knitted, the end stitches are joined to the two knitting needles adjacent to each other by the following [1] to [3]
And after the step < RTI ID = 0.0 > y, < / RTI > the end stitch is removed from the needle bed.
[1] A stitch sewing machine, comprising: a transfer box to a needle bed facing the end stitch, a split stitch for knitting a first new stitch drawn from the stitch stitch to a knitting needle to which the stitch is attached, .
[2] The end stitch is transferred to a knitting needle adjacent to the knitting needle to which the first new stitch is engaged in the knitting direction of the first new stitch.
[3] The second new stitch continuing in the wale direction of the end stitch is knitted in the knitting direction same as the knitting direction of the first new stitch.

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