KR102600848B1 - Apparatus and method for weaving narrow fabrics to which stretch weft is applied - Google Patents

Abstract

The present invention relates to a weaving device and method for a narrow fabric to which an elastic weft is applied, in which multiple strands of warp (12) wound on a warp bobbin (10) are arranged at regular intervals through a warp supply unit (20) and maintained at a constant tension. In the narrow loom 42 supplied to the weaving unit 30 and wound on the weft bobbin 40, the weft yarn 42 is also supplied to the weaving unit 30 through the weft supply unit 50 to weave the warp and weft yarns, A first tension control device (60) for stretching weft is installed behind the warp bobbin (10) of the loom, and a second tension control device (80) is installed on the warp bobbin holder (70) on which the warp bobbin is mounted. Even when using an expansion weft, the tension of the expansion weft is adjusted in two stages by the first and second tension control devices 60 and 80, so that the tension of the expansion weft is maintained stably and can be used on any narrow loom. It relates to a device and method for weaving narrow fabrics with stretch weft yarns that improve productivity by enabling application.

Description

Weaving apparatus and method for narrow fabrics to which stretch weft is applied {Apparatus and method for weaving narrow fabrics to which stretch weft is applied}

The present invention relates to a weaving device and method for a narrow fabric to which an elastic weft is applied. More specifically, when an elastic yarn is used for the weft in the process of weaving a narrow fabric such as a watch strap on a narrow loom, the tension of the weft is maintained at a constant level. It relates to a weaving device and method for a narrow fabric with expanded weft yarns that prevents cutting of the stretched yarns during weaving and prevents weaving defects by appropriately controlling the elongation rate of the stretched yarns.

A narrow loom is a device for weaving narrow fabrics such as watch straps, bag straps, shoe laces, and various belts, and its configuration will be explained with reference to FIG. 1.

As shown in Figure 1, in a conventional narrow loom, multiple strands of warp yarn wound on a warp bobbin 10 are arranged at regular intervals through a warp supply unit 20 including a plurality of guides, etc., and are placed at a constant tension in the weaving unit 30. ), and the weft wound on a weft bobbin (not shown) is also supplied to the weaving unit 30 through a weft supply unit (not shown) to weave the warp and weft yarns, and the woven fabric is fed to a draw roller (not shown). It is wound on a winding bobbin (not shown).

As shown in FIG. 2, the weaving unit 30 includes a heald 31 that moves the warp yarn up and down at regular intervals, a carrier 33 that injects the supplied weft yarn between the openings of the warp yarn, and a needle that receives the supplied weft yarn and weaves ( 35).

In the weaving unit 30 configured in this way, the carrier 33 feeds the weft yarn between the warp yarns and simultaneously hangs the weft yarn on the needles 35, and the carrier 33 returns and returns with the weft yarn.

The weft supplied in this way is pushed between the warps by the body needle movement of the body (not shown), and in this process, the weft hanging on the needle 35 is pulled out and a part of the narrow fabric is woven.

As seen above, the weft is supplied by the reciprocating movement of the carrier 33, and the width of ordinary narrow fabrics, especially watch straps, is narrow, so there is no need to stretch in the width direction, so the elastic yarn is used in narrow fabrics such as conventional watch straps. When using, the warp was mainly used, and since the warp simply had to be unwound from the bobbin at a constant speed, it was relatively easy to adjust the tension, so it was easy to keep the tension constant even when elastic yarn was used for the warp.

Meanwhile, in the case of recent watch straps, the use of stretch yarns is also required for the weft yarn. When stretch yarns are used for the weft yarn in the process of weaving narrow fabrics such as watch straps with the above-mentioned conventional narrow loom, the pull generated during the reciprocating process of the weft yarn is As the stretched yarn is pulled by force, it may be stretched beyond its original state. In this case, when the force pulling the stretched yarn by the carrier is removed, the weft consisting of the stretched yarn (hereinafter referred to as stretched weft) is woven as the stretched yarn is restored to its original state. Because the width of the fabric became narrower than other parts, defects such as the fabric not being woven into the desired shape and becoming uneven occurred.

In addition, stretch yarns are mostly weak in strength, but not only do they come into contact with the multiple guides that make up the weft supply section while reaching from the bobbin to the carrier, and the pulling force from the carrier is also applied, but narrow fabrics have a narrow width. As the weft is narrow, the reciprocating speed of the weft is very fast, so the pulling force by the carrier becomes very large, so a problem arose in that the elastic yarn is cut during the supply process. To solve this problem, even if a tension control device using a conventional spring is used, the weft The pulling force caused by the fast supply speed cannot be sufficiently controlled, resulting in the expansion and contraction weft being broken or tension imbalance problems occurring.

In this way, when the expansion yarn breaks, productivity decreases because the narrow loom has to be set up and the broken expansion yarns are connected, and the woven part from the broken part of the expansion yarn until it is reconnected becomes a defective product, so there was a problem of decreased productivity and quality of the product. .

On the other hand, as shown in FIG. 1, the narrow loom has a dimension from the warp bobbin 10 through the weaving unit 30 to a drawing roller (not shown) limited to about 2 m, and not only is the length narrow, but the width between components is limited. Because this is narrow, the tension control device must be installed separately from the narrow loom, but in this case, the area of space occupied by the narrow loom including the tension control device becomes larger, and furthermore, if the tension control device is installed outside the narrow loom, the weft bobbin will not be tensioned. Since it has to be located rearward of the adjusting device, the length from the weft bobbin to the weaving section becomes longer, so there is a problem in that it becomes more difficult to adjust the tension of the weft.

In addition, in order to solve this problem, when a tension control device is installed on the main body of the narrow loom, that is, the warp bobbin holder, the vibration generated during the replacement of the warp bobbin or the process of unwinding the warp from the warp bobbin is transmitted to the tension control device, so the tension control device There was a problem in that the tension could not be adjusted consistently.

Registered utility model 20-0292890 Registered utility model 20-0420577 Patent Notice No. 10-1996-0014595

The purpose of the present invention to solve the above problems is to prevent cutting of the stretched weft during weaving by constantly controlling the tension of the stretched weft when using a stretched yarn for the weft in the process of weaving a narrow fabric, and to prevent the stretched weft from being cut during weaving. A weaving device and method for a narrow fabric with expansion weft that prevents weaving defects by appropriately controlling the elongation rate and ensures stable operation by installing a tension control device on the device body in a narrow loom with limited installation space. is to provide.

A feature of the present invention for achieving the above object is that a first tension control device is installed at the rear of the warp bobbin of a narrow loom, and a second tension control device is installed on the warp bobbin holder on which the warp bobbin is mounted. , Even when using stretch weft, the weft tension is adjusted in two stages by the first and second tension control devices, so the tension of the stretch weft is maintained stably and can be applied to any narrow loom, improving productivity. It is in a weaving device for narrow-width fabrics to which weft yarns are applied.

In the above configuration, a vibration-attenuating means is provided between the second tension control device and the warp bobbin holder to prevent the vibration generated during operation of the narrow loom from being transmitted to the second tension control device, thereby maintaining the tension of the expansion weft yarn. The goal is to keep it constant.

Moreover, the first and second tension control devices allow the installation angle to be adjusted so that the central axis of the first and second tension control devices matches the exit angle of the stretch weft yarn, thereby maintaining the tension of the stretch weft yarn more stably. It's in doing it.

Another feature of the present invention is that the primary tension of the stretched weft unwound from the weft bobbin provided at the rear of the warp bobbin of a narrow loom is adjusted through a first tension control device installed immediately before the weft bobbin, but the tension is adjusted. A first tension control step in which the expansion weft yarn is supplied upward in a direction consistent with the central axis of the first tension control device; The tension of the elastic weft that has passed through the first tension control device is adjusted secondarily by a second tension control device provided in the warp bobbin holder on which the warp bobbin is mounted, and the elastic weft is adjusted by the second tension control device. The direction of progress is bent downward, and the expansion weft whose tension is adjusted secondarily is supplied to the weaving unit in a direction that coincides with the central axis of the second tension adjustment device. It is configured to include a second tension control step, There is a method of weaving narrow fabrics with elastic wefts that maintain stable tension.

According to the present invention constructed as described above, the tension of the stretch weft is adjusted to a constant level to prevent cutting of the stretch weft during weaving, and the elongation rate of the stretch weft is appropriately controlled to prevent weaving defects such as watch straps from occurring, thereby improving productivity. There is an improving effect.

In addition, by installing the tension control device on the warp bobbin holder that constitutes the narrow loom, the tension control device can be stably installed even on conventional narrow looms with limited dimensions, allowing the expansion and contraction weft to be stably used on any narrow loom, thereby increasing productivity. This has the effect of improving the quality of narrow fabrics.

In addition, the tension control device is installed on the warp bobbin holder constituting the narrow loom through a vibration isolation means, so that the vibration caused by the driving of the narrow loom is not transmitted to the tension control device, so the tension of the expansion weft can be maintained constant, so the tension of the expansion weft can be maintained constant. This has the effect of maintaining the quality of the fabric consistently.

1 is a diagram showing a conventional narrow loom
Figure 2 is a diagram showing the configuration of the weaving unit of a conventional narrow loom
Figure 3 is a view showing a weaving device for a narrow fabric to which expansion and contraction weft is applied according to the present invention.
4 and 5 are diagrams showing a vibration isolation means according to the present invention.
Figure 6 is a diagram showing the operation of the vibration isolating means according to the present invention

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

As shown in FIG. 3, in the weaving device for a narrow fabric to which expansion and contraction weft is applied according to the present invention, multiple strands of warp (12) wound on a warp bobbin (10) are arranged at regular intervals through the warp supply unit (20), In a narrow loom, the weft yarn 42, which is supplied to the weaving unit 30 under tension and wound on the weft bobbin 40, is also supplied to the weaving unit 30 through the weft supply unit 50 to weave the warp and weft yarns. , a first tension control device (60) for expansion and contraction weft is installed behind the warp bobbin (10) of a narrow loom, and a second tension control device (80) is installed on the warp bobbin holder (70) on which the warp bobbin is mounted. ) is installed, so that the tension of the expansion weft is adjusted in two stages by the first and second tension control devices 60 and 80 even when the expansion weft is used, and the tension of the expansion weft is maintained stably and can be adjusted to any fine width. It can be applied to looms to improve productivity.

In the above configuration, a vibration isolation means 90 is provided between the second tension control device 80 and the warp bobbin holder 70 to attenuate vibration, that is, the vibration generated during operation of the narrow loom, that is, the warp bobbin 10. ) The tension of the expansion weft is kept constant by preventing the vibration generated during the replacement process or the vibration generated when the warp bobbin (10) rotates from being transmitted to the second tension control device (80).

At this time, the vibration isolation means 90 is an upper plate 91, a warp bobbin holder 70, or the warp bobbin holder 70 coupled to the lower part of the second tension control device 80, as shown in FIGS. 4 and 5. A lower plate 93 is separately coupled to the support for installing the second tension control device 80, and a compression spring 95 connecting the upper plate 91 and the lower plate 93 is provided, and the compression spring 95 connects the upper plate 91 and the lower plate 93. It consists of a tension spring 97 connecting the upper plate 91 and the lower plate 93 to be disposed around the spring 95.

In addition, both ends of the tension spring 97 are connected to pins 98 fixed to the upper plate 91 and the lower plate 93.

Meanwhile, the first and second tension control devices 60 and 80 allow the installation angle to be adjusted, so that the central axis of the first and second tension control devices 60 and 80 and the elastic weft 42 The tension of the expansion weft 42 is maintained more stably by ensuring that the exit angle of the A fixing bolt is installed through it, and on the other side, an arc-shaped through hole through which the fixing bolt passes is installed, and the plurality of panels are rotatably coupled at one end with a hinge pin and fixed to the fixing bolt with the pole angle adjusted. It can be configured by tightening a nut, and can also be implemented in various ways, such as adjusting the angle by arranging a plurality of through holes in an arc.

In addition, the first and second tension control devices 60 and 80 are used as known devices such as 'nova1000' manufactured by IROPA Actien Gesellschaft Co., Ltd.

The weaving method of a narrow fabric to which an expansion weft is applied using the weaving device for a narrow fabric to which an expansion weft of the present invention is configured as described above will be examined below.

First, the stretching weft 42 released from the weft bobbin 40 passes through the first tension control device 60 to primarily control the tension change due to a change in the thickness of the weft bobbin or a change in yarn speed, and at this time, the stretching The exit angle of the weft is raised while coinciding with the central axis of the first tension control device 60, and then passes through the second tension control device 80 provided on the upper part of the warp bobbin holder 70 in the supply direction of the expansion weft yarn. As it bends downward, the tension is secondarily adjusted by the tension control function of the second tension control device itself, and then the weaving unit (30) is weaved with the central axis of the second tension control device (80) aligned with the exit angle of the elastic weft thread. ), so the tension of the stretchable weft 42 can be maintained constant.

On the other hand, the second tension control device 80 operates stably even under vibration or impact due to the vibration isolation means 90 provided on the upper part of the inclined bobbin holder 70. As shown in FIG. 6, the vibration isolation means 90 ) Most of the vibrations in the up-down and left-right directions are attenuated by the compression spring (95) provided at the center, and the tension spring (97) at the edge is compressed, and the vibration is expanded and compressed along the movement of the center compression spring (95). This is because it compensates for attenuation and prevents the first tension adjustment device 60 at the top from being separated from the warp bobbin holder 70.

Therefore, according to the present invention, it is possible to obtain a narrow fabric of excellent quality even when stretch yarn is used as the weft when weaving a narrow fabric such as a watch strap.

10: warp bobbin 20: warp supply unit
30: Weaving part 40: Bobbin for weft
42: Expanded weft 50: Weft supply unit
60: First tension adjusting device 70: Bobbin holder for warp
80: second tension adjusting device

Claims (5)

Multiple strands of warp yarn 12 wound on the warp bobbin 10 are arranged at regular intervals through the warp supply unit 20 and supplied to the weaving unit 30 at a constant tension, and are wound on the weft bobbin 40. In the weaving device for a narrow fabric in which the weft yarn 42 is also supplied to the weaving unit 30 through the weft supply unit 50 to weave the warp and weft yarns,
A first tension control device (60) installed behind the warp bobbin (10) and in front of the weft bobbin (40) to adjust the tension of the stretchable weft yarn (42) unwound from the weft bobbin (40);
A second tension control device (80) is provided on the warp bobbin holder (70) on which the warp bobbin is mounted and adjusts the tension by bending the supply direction of the expansion and contraction weft (42);
The top plate 91, the warp bobbin holder 70, or the A lower plate (93) that is separately coupled to the inclined bobbin holder (70) and coupled to a support that allows installation of the second tension adjusting device (80), and a compression spring connecting the centers of the upper plate (91) and the lower plate (93). (95), a vibration isolation means (90) for attenuating vibration and including a tension spring (97) connecting the upper plate (91) and the lower plate (93) to be disposed around the compression spring (95);
A weaving device for a narrow fabric to which an expansion weft is applied, characterized in that it comprises a.
delete delete According to claim 1, wherein the first and second tension control devices (60) (80) are weaving devices for narrow fabrics to which stretch weft is applied, characterized in that their installation angles are adjusted.
The primary tension of the elastic weft unwound from the weft bobbin provided at the rear of the warp bobbin of the narrow loom is adjusted through the first tension control device installed just before the weft bobbin, and the tension-adjusted elastic weft is controlled by the first tension. A first tension adjustment step supplied upward in a direction consistent with the central axis of the device;
The tension of the elastic weft that has passed through the first tension control device is adjusted secondarily by a second tension control device provided in the warp bobbin holder on which the warp bobbin is mounted, and the elastic weft is adjusted by the second tension control device. A second tension control step in which the direction of progress is bent downward, and the expansion weft yarn whose tension is adjusted secondarily is supplied to the weaving unit in a direction that coincides with the central axis of the second tension control device;
A weaving method of a narrow fabric to which an expansion weft is applied, characterized in that it comprises a.

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