JP2527710B2 - Ear tissue by rapier loom and its device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application> The present invention mainly relates to a wide ear structure and a device therefor by a shuttleless loom typified by a rapier loom. Developed for the purpose of obtaining a woven fabric with strong selvages at a low price by newly installing a braiding device so that the selvage weave can be woven by continuous wefts with a rapier loom, similar to the woven fabric obtained by conventional power looms. Is.

<Prior Art> As is well known, shuttle looms are roughly divided into shuttle looms and shuttleless rapier looms.

When producing a woven fabric on a shuttle loom, weave a small weft thread into the shuttle and interlock the left and right threads to insert the weft thread into the vertical thread. It is suitable as a strong and heavy-duty packaging bag base cloth. However, since the weft bobbin is small, the weft of the shuttle is exhausted in a short time, and it takes time to replace it every time, and the weaving speed is much slower than that of the shuttleless loom because the shuttle runs left and right. It's a bad thing. There is an automatic loom that automatically replenishes the weft yarns for each shuttle, but it also costs a lot of equipment, has a complicated mechanism and causes many failures, and has the drawback that the types of weft yarns are limited. Is large.

On the other hand, the shuttleless loom, on the contrary to the shuttle loom, has a high weaving speed and uses a large weft thread cone directly, which saves the time and labor of replacing the weft thread and is highly productive. The ears are weak because they are cut one by one each time they are passed through the warp yarn, and moreover, the two ears of the fabric remove wasteful portions in the form of streaks, which leads to loss of raw materials.

<Problems to be Solved by the Invention> The present invention eliminates the above drawbacks of shuttle looms and shuttleless looms, and provides a novel woven fabric having both features and a rapier loom for weaving the same. While adopting the basic weaving method of the rapier loom, which is a shuttleless loom with a high weaving speed, weaves with endless weft threads as with the shuttle loom, and has a selvedge unit installed to make it strong. It was a wide fabric with a pair of ears. Various woven or knitted ears and structures and devices have been proposed, for example, JP-A-53-38757, JP-B-46-860, JP-A-49-14247 and JP-A-56-4739. Seen in.

<Means for Solving the Problems> In the present invention, as a selvage structure and a device thereof by a rapier loom, consideration is made from both sides of a woven fabric and a device. As for the woven fabric, the selvage portion of the woven fabric (1) is a weft yarn. (2) has a selvage (4) and a selvage (6), which is formed by entwining a selvage assembly thread (5) with respect to the weft thread fold, and has no selvage cut end. As an ear tissue, the device for obtaining the ear tissue is to assemble the ears without cutting the weft thread at the tip position of the rapier bar (10) that reciprocates through the warp thread opening with a stroke that is greater than the width of the fabric. To do so, a new selvedge device was added to the rapier loom.

As a more specific structure of the ear tissue, the ring difference braided ear portion (6) is provided with a rapier rod (1
The ring difference (B) of the weft thread (2) sent by (0) passes,
Then, the second loop difference (C) of the selvedge yarn (5) passes through the loop difference (B) of the weft threads again, and the weft threads do not cross these loop differences (A) (B) (C). It is a selvage structure formed by sequentially tightening. As a specific example of the device that constitutes it, first, a braid needle (20) for the selvage yarn is attached to the tip of the rapier rod.
Is provided with a notch (11) that forms an insertion space, and the selvedge device feeds the selvage yarn (5) into the ring gap (B) at the tip of the weft yarn (2) sent by the rapier rod. A needle (20) and a receiving claw (21) that receives the selvedge yarn (5) fed into the ring difference (B) to form a first wheel difference (A),
The catch claw (21) and the feed needle (20) are sequentially moved into the first ring difference (A) of the selvedge yarn formed by the cooperative operation of these, and the ring difference (B) of the weft yarn end in order. Send rapier stick (1
It can be mentioned that it is located at the correlation position with 0). The "ring difference" referred to here is "a loop that can be formed at the tip of the folded back thread", and the loop of the folded back tip of the weft thread (2) sent by the rapier rod (10) and the selvedge thread ( It is a loop formed by folding back the selvage yarn (5) formed at the tip of the feed needle (20) for feeding in 5).

<Operation> When the same material is used, the selvage structure having the above structure is as durable as or more durable than the fabric produced by the conventional shuttle loom. It becomes a shuttleless rapier loom that can be woven as it is, and acts to weave the ear tissue at a higher speed than the shuttle loom. The operation of each member will be specifically described in the embodiments.

<Embodiment> An embodiment of an ear tissue and its device by a rapier loom of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an enlarged plan view of an ear assembly portion of an ear tissue of the present invention with an intermediate portion omitted, FIG. 2 is a side view showing an example of a rapier rod tip and an ear assembly device, and FIGS. It is explanatory drawing which shows order.

In the ear structure shown in FIG. 1, the woven material (1) is a weft thread (2).
It is a two-piece 1/1 plain weave. In the case of a hollow weave, the warp threads (3) may be alternately arranged on the upper surface and the lower surface, and the structure of the woven fabric is not particularly limited. The feature of this woven fabric is that, although it is a rapier loom, the weft thread (2) is a continuous zigzag without being cut at the ears, and there is a ring difference on both sides of the ears. The left side of FIG. 1 is a simple folded back selvage (4) of the weft thread, while the right side is a loop-shaped braided selvage (6) in which the selvedge thread (5) is newly entangled with respect to the weft thread turnaround.
Is configured.

An example of the structure of the ring-comb-assembly selvage portion (6) is given on the right side in FIG. 1, but if the selvage yarn (5) is traced from the lower part to the upper part of the figure, the assembly method will be clear. That is, the selvedge yarn (5)
Pass the loop difference (B) of the weft thread (2) sent by the rapier rod (10) through the first wheel difference (A) of the thread, and then re-insert into the loop difference (B) of the weft thread (A). Through the second wheel difference (C) in 5),
These ring differences (A), (B), and (C) are sequentially tightened without crossing the weft threads to finish. Ring difference of selvedge yarn (A)
Since (C) is divided only for explanation, the ring difference (C) moves to the next ring difference (A) of the ear set, so that (A) and (C) are completely equivalent.

FIG. 2 shows an example of the selvage assembly device that forms the ring-shaped assembly ear portion (6). In addition to this example, the selvedge unit can be freely redesigned by assembling various conventionally known mechanical elements. In short, the selvage unit is provided in a shuttleless loom such as a rapier loom. It has the greatest feature. Therefore, the selvage assembly device is installed at the tip of the rapier bar (10) that reciprocates through the warp thread opening with a stroke greater than the width of the fabric so that the selvage assembly can be carried out without cutting the weft thread. It is a device that entangles (5) with the weft difference (B).

Therefore, the feed needle (20) for sending the selvedge yarn (5) into the ring difference (B) of the weft yarn (2) and the selvage yarn (5) sent into the ring difference (B) are received. The receiving claw (21) and the receiving claw (21) and the feed needle (20)
It is arranged at a position correlated with the rapier bar (10) which sequentially feeds the ring difference (B) of the weft yarn end into the first ring difference (A) of the selvedge yarn formed by these cooperative operations.

At the tip of the rapier bar (10), the rapier bar (10) is cut downward (11) to pass the first loop difference (A) of the selvedge yarn (5) through the loop difference (B) of the weft thread. To form a space (12) for inserting the feed needle (20) between the ring difference (B) of the weft thread and the rapier bar (10). Further, small roller bearings (12) and (13) are provided on the thread receiving portion of the head of the rapier rod (10) to prevent the weft thread from being worn due to friction.

The feed needle (20) of the selvage yarn (5) is attached to the end of the needle bar (22) so as to enter and retract into the insertion space (12) at the stop position where the rapier bar (10) moves forward and backward, and Feed needle (2
At the stop position of 0), the selvage yarn (5) is delivered to the receiving claw (21). At the tip of the needle bar (22), there is a guide bar (23) of the braided yarn, which widens the ring difference (C), which is the next ring difference (A), and the ring difference of the next rapier bar (10). Make sure to insert it into (A).

An example of power transmission for cooperative operation between the feed needle (20) and the receiving claw (21) is shown in FIG. That is, a chain from a rotating main shaft of a loom (not shown) transmits to the chain wheel (25) of the cam shaft (24), decelerates the gear, and transmits rotational force to the receiving pawl shaft (26) of the receiving pawl (21). Meanwhile, feed needle (20)
The oscillating movement of the is along the groove cam (27) of the cam shaft (24),
The movement of the cam rod (29), which swings at the fulcrum (28), is transferred to the intermediate rod (3
It connects with a needle bar (22) via (0), and a needle bar is rock | fluctuated by a fulcrum (31). As the grooved cam (27), various known cams such as a disk lateral cam, an upward cam, or a swash plate cam can be applied instead of the drum. Further, the mechanism for transmitting the motion is not particularly limited, since the swing motion of the needle bar can be achieved by a mechanism other than the cam.

The movement of the rapier rod (10) pulls out excess weft yarn with a stroke larger than the fabric width in order to form the loop-shaped interlace portion (6). In addition, the selvage yarns are also pulled out by a large movement while forming a large ring difference. Therefore,
It is necessary to add a thread tension and pullback device for pulling out and stopping these yarns to the rapier rod and the selvedge device. However, as these thread tension and thread pull-back devices, known ones commonly used in conventional sewing machines may be applied.
Here, it is omitted.

Using the above-mentioned device, the ring difference assembly ear (6) shown in FIG.
The order of formation is shown in FIGS. However,
The warp threads are omitted in the illustration. First, is the time when the reed was driven, the rapier bar (10) returned to the left, and the first wheel difference (A) due to the right selvedge yarn (5) retreated with the receiving claw (21). It is large with the guide bar (23) at the tip of the needle bar (22), and the feed needle (20) is retracted and waiting. Is where the rapier bar (10) is advancing to enter the first wheel difference (A), and is further moving past the first wheel difference (A) to reach the leading edge, aiming for the insertion space of the rapier bar. Is the place where the feed needle (20) enters, and is the first wheel difference (A)
Shows a state in which the yarn is separated from the receiving claw (21), and the feed needle (20) penetrates the insertion space of the rapier bar to feed the selvedge yarn (5) into the ring gap (B) of the weft yarn (2). Is a rapier stick (10)
Is retracting while leaving the weft difference (B), the second claw (C) is received by the claw (21) on the right side of the first (A) difference,
The state that the feed needle (20) has come out of the weft thread difference (B) is shown. At this time, the first wheel difference (A) is gradually reduced by pulling back the selvedge yarn. The rapier bar (10) returns to the left start position, the second wheel difference (C) increases, the next first wheel difference (A) occurs, and the original first wheel difference (A) has a smaller ring. It becomes a perfect ear and returns to.

The selvedge device according to the present invention is provided on the left and right sides of the loom in pairs with a rapier rod, and both ears are provided with a folded selvage (4) shown on the left side of FIG. 1 and a wheel difference shown on the right side of FIG. By changing the arrangement, it is possible to arrange the pair of selvages (6) alternately, or to provide two pairs of looms in the center of the loom up to the center of the loom so that two looms are arranged. It can be used in addition to shuttleless looms.

<Effects of the Invention> The ear tissue obtained as described above is a woven fabric that is as strong as or better than the ear tissue obtained by the conventional shuttle loom, and is suitable for heavy packaging bags such as rice bags. It is useful as a base cloth or a base cloth for large sheets such as Nozumi sheets and hoods. Moreover, the weaving can be done with a high-speed shuttleless loom, and only the addition of the selvedge device with a simple structure and the modification of the rapier bar are necessary, so the cost of modification is low, and therefore the rapier weaving machine originally has The high productivity can be utilized for the production of ear tissue as it is, and the remarkable effect that the labor at the time of weaving and the cost of the product can be reduced was obtained.

[Brief description of drawings]

FIG. 1 is an enlarged plan view of an ear assembly portion of an ear tissue of the present invention with an intermediate portion omitted, FIG. 2 is a side view showing an example of a rapier rod tip and an ear assembly device, and FIGS. It is explanatory drawing which shows order. (1) …… Ear tissue material, (2) …… Weft thread (3) …… Warp thread, (4) …… Folded ears (5) …… Ear braid, (6) …… Ring difference braid Ear (10) …… Rapier rod, (11) …… Notch (12) …… Insertion space, (20) …… Ear braiding thread feed needle (21) …… Receiving claw, (22) …… Needle Rod (23) …… Guide bar, (A) …… 1st ring difference of selvage yarn (B) …… Wedge difference of weft yarn, (C) …… Second wheel difference of selvedge yarn

Claims (2)

(57) [Claims] Claims: 1. A wide woven fabric (1) has an edge portion of a weft thread (2) which is folded back and an interlaced ear section (5) which is entangled with the weft thread (5). 6), and the ring difference braided selvage portion (6) has a ring difference (B) of the weft thread (2) sent by the rapier rod (10) to the first wheel difference (A) of the selvage thread (5). ) Passes, and then the selvage yarn (5) is reattached to the ring difference (B) of the weft yarn.
2nd wheel difference (C) passes, and these wheel differences (A) (B)
An ear weaving machine using a rapier loom, which is a selvedge structure formed by sequentially tightening (C) without crossing the weft threads, which is a selvage without a cut end of the weft thread. 2. A rapier rod (10) reciprocating in a warp yarn opening with a stroke greater than the width of a wide fabric (1), and an ear-assembling device for assembling an ear without cutting a weft yarn at its tip position. The rapier rod (10) is provided with a notch (11) forming a space (12) for inserting the selvage yarn feed needle (20) at the tip thereof, and the selvage device is provided at the tip of the weft yarn (2). The first needle ring difference (A) is received by receiving the feed needle (20) for sending the selvage yarn (5) into the ring difference (B) and the selvedge yarn (5) sent into the wheel difference (B). The receiving claw (21) to be formed, and the receiving claw (21) and the feed needle (20) are formed into the first wheel gap (A) of the selvedge yarn formed by the cooperation of these. A selvedge device for a rapier loom, which is arranged at a position correlated with a rapier bar (10) that sequentially feeds in the ring difference (B) at the yarn end.