JPS6014863B2 - Auxiliary fluid injection device in jettrum - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to a striping device in a jet loom that performs weft insertion using compressed air, and particularly relates to a striping device in a jet loom that performs weft insertion using compressed air. This invention relates to a twilling device equipped with a twilling device.

As shown in FIG. 1, this weft inserting machine has a recess or guide path la that opens on the front side (three temples) in each twill tooth 1 to guide the fluid and striped yarn used during weft insertion. Deformed coins with .

The twilling is carried out by causing the weft yarn 6 to fly within the recess la of the deformed line by means of a fluid jet from the main nozzle 5, and inserting the weft yarn 6 into the entrance or exit of the warp yarn 4. Since the jetting fluid from the main nozzle 5 alone is insufficient to reach the flying distance of the silk thread 6 and a stable flying state of the striped thread 6 cannot be obtained, a plurality of auxiliary nozzles 2 (1 ) are provided along the weft flying direction, and the jet fluid 2 from them is provided.
With the help of ', the striped thread 6 is guided along the recess la.
In the striping device shown in Fig. 1, during the marking process, the yarn flies through the concave portion la provided in the stripe, and during the coin making process, the stripe moves to the front side of the weaving together with the auxiliary nozzle 2, and the stripe moves to the deepest part of the concave portion la. Striking is done in

The coin is a consumable item because the weft is repeatedly striated, and its lifespan is not permanent and must be replaced with a new one at certain intervals. The production cost of deformed coins like the one shown in FIG. 1 is naturally much higher than that of ordinary straight wire, and the operating cost of the loom is also high. A striping device capable of solving this and other drawbacks (described in detail in Japanese Patent Application No. 52-11272 filed by the same applicant as the present application) is shown in FIGS. 2 to 4. In the weft inserting device shown in Figs. 2 and 3, the weft inserting machine is composed of the royal line IA, which is a normal straight line, and the auxiliary coin IB, which is a modified bramble in which the above-mentioned recess or guide path la is formed. , an auxiliary nozzle 2 is arranged on the front side of the auxiliary coin IB.

These members IA, IB and 2 are attached to the sley 7 in the usual manner, and when striping, the sley 7 is in the position shown by the solid line in FIG. The jetting fluid from the auxiliary nozzle 2 causes the sled 7 to fly and insert the weft.
The auxiliary coin IB is rotated to the position shown by the chain line in the figure, and the auxiliary coin IB comes out of the warp closure, and the ripple is performed by the main IA. 8 is a conduit that supplies compressed air to the auxiliary nozzle 2.

In the striping device shown in Fig. 4, an auxiliary nozzle 2 is arranged between the main bale IA and the auxiliary strip IB, and the recess la provided in the auxiliary strip IB opens not to the front side of the weaving but to the main strip side. Except for this point, it can be considered that the twilling device is substantially the same as the twilling device shown in FIG.

In addition, other twilling devices include, for example, Hakama Kaisho 54
- The painting device described in Publication No. 59453 and the closed part of the auxiliary crease teeth are formed with a gap large enough to allow the weft yarn to pass through after weft insertion, and an air flow is injected into the substantially closed guide path. There was a picture engraving device.

Generally, the cup □ has a triangular shape formed by the upper and lower warp threads and the coins, so the distance between the upper and lower warp threads becomes longer at a position close to the crease, and if stripes are made at this position, the warp threads will not open □. This position is an advantageous position for skipping striped yarns, since the effect will not be exerted on the twill yarns even if sufficient.

However, when using a deformed line as in the twilling device shown in Figure 1, or when using an auxiliary line near the main part as in the twilling device shown in Figures 2 to 4, the auxiliary nozzle is placed in a recess or guide It is desirable to install it as close to the path as possible in terms of overall yarn conveyance. However, because the auxiliary nozzle needs to inject a sufficient amount of air to assist the conveyance of the striped yarn, its diameter is considerably large compared to the pitch of the sharp teeth that are arranged very closely together, and this causes the warp to This causes various problems. FIG. 5 is a partially enlarged cross-sectional view of the twilling device shown in FIG. 4 taken along a horizontal plane passing through the guide path la in the auxiliary line IB. As can be seen from this figure, the auxiliary nozzle 2 is placed as close to the guide path la as possible. Moreover, since the cross section is circular and the diameter is considerably larger than the pitch p of the main reinforcement IA or the auxiliary reinforcement IB, the interval with the next reinforcement becomes narrower, and the warp threads pass between them. Therefore, a considerably excessive force is applied to the warp threads 4, causing them to undergo sudden bending.

As a result, the warp threads become more fluffy, causing meridian tangles,
This causes defective closure of the Muraguchi, making it impossible to create normal stripes.
If the warp threads are stretched, the warp threads may be cut, hindering efficient machine operation. In addition, since abnormal tension is applied to the warp yarns, warp occurs in the woven cloth, which deteriorates the feel and texture of the cloth. On the other hand, in order to eliminate these effects, increasing the distance between the auxiliary nozzle and the main thread or the distance between the auxiliary nozzle and the main line and the auxiliary stripes will cause striped threads unless you spray a large amount of jet stream that is more powerful than the auxiliary nozzle. It will not be possible to provide sufficient speed.

In this case, the air injection pressure is high, the injection aperture and the number of auxiliary nozzles are required, which not only increases the air power and reduces the power efficiency, but also tends to cause the air flow to become turbulent, disturbing the weft and making it unstable. It becomes impossible to insert the weft. Therefore, an object of the present invention is to provide an auxiliary fluid ejection device for a jet loom having an auxiliary nozzle that does not have the above-mentioned adverse effects on the warp threads.

For the above purpose, the auxiliary fluid injection device of the present invention has a guide path extending in the striping direction along the stripe, and when forming the stripe, the jet fluid is ejected from the main nozzle and a plurality of auxiliary nozzles arranged along the guide path. In the jet loom in which the silk thread is flown through the guide path, the guide path is formed by a main bale or an auxiliary strip, and the auxiliary nozzle is arranged such that the length in the ridge direction in the cross section at the injection hole position is at least in the weft direction. The auxiliary nozzle is formed into a shape that is longer than its length, and the injection hole of the auxiliary nozzle is bored on the long side surface of the auxiliary nozzle, and the auxiliary nozzle is arranged with the injection hole facing into the guide path. It is something to do.

The invention will become more readily apparent from the following description of a preferred embodiment, shown by way of example only in the accompanying drawings.

Referring to the drawings, FIG. 6 shows a weft insertion device equipped with an auxiliary nozzle 10 according to the present invention.

FIG. 6 is a diagram corresponding to FIG. 5, and the auxiliary nozzle 10 of the present invention is applied to the silk inserting device of the type shown in FIG. The present invention can be similarly applied to a type of striping device or a total insertion device of the type in which a closed guide path is formed by leaving only a gap as narrow as necessary for the striped thread to pass through the entrance portion of the auxiliary bar tooth. In the striping device of the type shown in Fig. 4, and thus in the full-stitching device of Fig. 6, the main reinforcement IA is a conventional straight line, and the weft guide path LA is located near the pole on the main side of the punch. Auxiliary muscle IB that forms
is provided, and the overall yarn 6 is conveyed through this guide path la.

During conveyance, air is injected toward the guide path la from the auxiliary nozzle 10 appropriately provided between the main bale IA and the auxiliary strip IB to maintain the speed of the striped yarn 6 fed by the main nozzle 5, and to maintain the speed of the striped yarn 6 fed by the main nozzle 5. The striped thread 6 is prevented from jumping out outside la, thus completing the complete insertion. In this striping device, it is preferable to place the position where the silk thread 6 passes, that is, the position of the auxiliary coin IB, as close to the main bale as possible, and to make the weft thread 6 fly as far away from the upper and lower warp threads as possible. Therefore, the distance between the primary mirror IA and the auxiliary nozzle IB becomes narrow, and unless special consideration is given to the auxiliary nozzle, it will interfere with the warp threads. In FIG. 6, the auxiliary nozzle 105 of the present invention has a substantially triangular or "reply" shape, which is longer in the warp direction than in the striped direction;
The auxiliary muscle IB side is more pointed than the other side. The end face of the auxiliary nozzle on the side of the auxiliary mirror is in contact with the auxiliary line IB. A compressed air injection hole 10a is provided on the downstream side in the weft traveling direction (indicated by an arrow) with the end surface of the auxiliary nozzle that contacts the auxiliary coin IB as a boundary. This injection hole 10a is oriented as shown by the chain line so as to direct the compressed air toward the approximate center of the recess la formed by the auxiliary coin tooth with which the next auxiliary nozzle comes into contact. Details of the auxiliary nozzle 10 of FIG. 6 are shown on the left side of FIG.

Further, as shown on the right side of FIG. 7, an auxiliary nozzle 10' which is sharpened not only on the auxiliary coin side but also on the main side may be used.
Furthermore, the cross-sectional shape of the auxiliary nozzle at the injection hole position can be made into various shapes other than those shown in the drawings. For example, in the auxiliary nozzle shape shown on the right side of FIG. Alternatively, only the surface on which the injection holes 10a and 10'a are provided can be formed flat. Since the auxiliary thread side is sharpened in this way, the gap between the adjacent auxiliary thread and the auxiliary nozzle (through which the warp threads pass) can be made as wide as possible. Furthermore, in the case of the auxiliary nozzle 10', the gap between the adjacent main bale teeth can also be widened.
Therefore, it is possible to provide the guide path for the auxiliary coin and the auxiliary nozzle near the primary mirror, and the silk thread can be passed at a position far from the ridge, reducing mistakes in striping and achieving stable weaving. be able to. In addition, although the pitch of the main twill and auxiliary threads is generally different, even if the pitch of the auxiliary competing teeth is narrowed to be equal to the pitch of the main thread, and the auxiliary nozzle is brought into contact with the auxiliary thread, the auxiliary nozzle Since the auxiliary coin side is sharp, the warp threads smoothly pass through the gap between the auxiliary nozzle and the auxiliary coin tooth, and the warp threads do not become fluffy. In addition, by doing this, the auxiliary nozzle is brought very close to the flying position of the green yarn, so the jet acts on the weft effectively and stable high-speed flying can be obtained. The flow rate is small, the injection pressure is reduced, and the injection cross section can be made small, so the air power used for fringing can be small. In addition, by bringing the auxiliary nozzle into contact with the auxiliary tooth, it is possible to bring the two closest to each other.
Although it is possible to effectively prevent the occurrence of a bridge between the auxiliary nozzle and the auxiliary tooth as shown by the dotted line in FIG. 7, the present invention does not necessarily require them to contact each other. Furthermore, compressed air injection hole 1
Since the auxiliary nozzle surface 0a or the auxiliary nozzle surface on which it is provided is inclined so as to approximately face the center point in the warp direction of the guide path la, which corresponds in position to the next auxiliary nozzle, the flow of the jet air flow from the auxiliary nozzle is is constant, and force can be effectively applied to the weft yarns. As described above, in the present invention, the cross section of the auxiliary nozzle that enters the warp row is formed to be elongated in the warp traveling direction, and the auxiliary nozzle is arranged in the guide path formed by the main reinforcement or the auxiliary reinforcement. Since the injection holes are oriented toward the guide path, the bending condition of the warp threads between the threads and the auxiliary nozzle is relaxed, and the influence on the warp threads is greatly reduced, so the auxiliary nozzle can be placed as close to the guide path as possible. It is possible to greatly improve the total input function by arranging the

[Brief explanation of the drawing]

1 and 2 are perspective views showing different types of weft insertion devices to which this invention can be applied, FIG. 3 is an explanatory diagram of the operation of the weft insertion device shown in FIG. 2, and FIG. 5 is a partial sectional view of a conventional weft insertion device having an auxiliary nozzle, FIG. 6 is a partial sectional view of a weft insertion device having an auxiliary nozzle according to the present invention, and FIG. FIG. 6 is a diagram corresponding to FIG. 5 showing details of the auxiliary nozzle of the invention; In the figure, 1. A is the main twill, IB is the auxiliary twill, la is the guide path, 4
5 is a warp, 5 is a main nozzle, 6 is a silk thread, and 10 and 10' are auxiliary nozzles. Spirit! Figure Sei 2 Figure Departure 3 Figure Groove 4 Figure Rolling 5 Figure Seiyu 6 Figure Groove 7 Figure

Claims (1)

[Claims] 1. A jet room having a guide path extending in the weft insertion direction along the reed, and in which the weft thread is flown through the guide path by jetting fluid from a main nozzle and a plurality of auxiliary nozzles arranged along the guide path during weft insertion. , the guide path is formed by a main reed or an auxiliary reed, the auxiliary nozzle is formed in a shape in which the length in the warp direction is longer than the length in the weft direction at least in the cross section at the injection hole position, and the injection of the auxiliary nozzle is An auxiliary fluid injection device for a jet room, characterized in that a hole is formed in a long side surface of the auxiliary nozzle, and the auxiliary nozzle is arranged with its injection hole facing into the guide path.