JPH0345748A - Loom - Google Patents

Abstract

PURPOSE:To eliminate twisting step which has been performed separately from a weaving step and to remarkably reduce the cost of weaving by placing a twister and a suction nozzle on a weft flying path at the downstream end of weft insertion by an ejection nozzle, thereby twisting the weft simultaneous to the weft insertion. CONSTITUTION:A weft 3 having a definite length and stored in a pool drum 7 is inserted through opened warps with an ejection nozzle 4 and the tip end of the weft 3 is inserted through the yarn path of a twister 12 and the yarn path 10 of a suction nozzle 9 and held by sucking. At the same time, the weft 3 is fixed by a gripper 17, twisted with a twister 12 and woven by the next opening motion. At the weaving stage, cutters 18, 19 are operated to cut and separate the weft 3 and the phase is transferred to the next weft-insertion stage. The above cycle is successively repeated to form a woven fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel loom that has been improved to twist the weft yarns during the weaving process.

[Prior Art] Generally, a loom weaves by forming an opening in the warp by vertical movement of a belt frame, and driving the weft into the opening in the warp using a spray nozzle or the like disposed on one side of the warp.

Since #la itself is not equipped with a device for twisting the weft yarns, when using twisted yarns as the weft yarns, it is necessary to prepare twisted weft yarns in advance.

Therefore, in this case, a separate yarn-twisting process is required to add twist to the weft yarns to form paragauge.

[Problem to be solved by the invention] In this way, in a loom, the weft is manufactured using a twisting device at another location, separate from the final weaving process, which saves time and cost. There was once a time.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a loom which can solve the above-mentioned problems and can omit the yarn twisting process, save time and effort, and significantly reduce costs.

[Means for Solving the Problem] In order to achieve the above object, the present invention provides an injection nozzle for injecting and inserting a weft of a certain length into an opening in the warp on one side of the warp to be opened, and The weft yarn is provided with a holding part that sucks and holds the tip of the weft yarn jetted from the jet nozzle, and a twister that twists the weft yarn.

[Operation] When an opening is formed in the warp, a weft of a certain length is driven into the opening from the injection nozzle on the negative side, and is sucked and held by the tip of the weft or a holding part of another system.

In this state, the weft is twisted by a twister.

In this way, since the weft yarns can be twisted during the weaving process, the twisting process, which was performed separately from the weaving process, can be omitted, which not only eliminates the need for twisting equipment, but also eliminates the labor involved in twisting the yarn. This will result in significant cost reductions.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

In FIG. 1, la and lb are both side frames of am, and between both side frames 1a and lb, a large number of warp threads 2 that are continuous in the direction perpendicular to the paper are arranged in horizontal rows, and these warp threads 2 move up and down on a belt frame (not shown). The opening can be operated by.

A spray nozzle 4 is attached to one side frame 1a for spraying and inserting a certain length of weft thread 3 into the openings of the warp threads 2 using the spray force of a fluid such as water. The weft yarn 3 is transferred from the loaded baggage 5 to
is being supplied. A cone-shaped pool drum 7 is disposed between the delivery roller 6 and the spray nozzle 4 for winding up the weft 3 supplied from the delivery roller 6 and storing the amount of yarn for one time to be driven into the opening of the warp 2. A tensor 8 is arranged between the pool drum 7 and the injection nozzle 4 for applying a predetermined tension to the weft yarn 3. Note that the injection nozzle 4 is driven in synchronization with the opening of the warp yarns 2.

The weft 3 sprayed from the spray nozzle 4 is placed on the other side frame 1b.
A suction nozzle 9, which is a holding part for suctioning and holding the tip part of the body with a predetermined tension, is attached. The suction nozzle 9 has a structure in which an injection hole 11 is formed to inject compressed air so that a suction flow is generated in a yarn path 10 through which the weft yarn 3 is inserted. Note that the suction nozzle 9 may be driven open from the time when the injection nozzle 4 is injecting to the time when thread waste at the cut end of the thread is removed by driving a cutter, which will be described later, but it may be driven constantly. . A waste thread collection box or the like may be attached to the exit side of the suction nozzle 9 to collect thread waste.

A twister 12 is provided between the inlets of the suction nozzle 9 for twisting the weft yarn 3 driven into the suction nozzle 9 from the injection nozzle 4.
is located. In this embodiment, the twister 12 is of a type that twists the weft yarn 3 by a swirling flow of compressed air, and as shown in FIG. A passage 14 is formed, and two injection holes 15 and 16 are formed in the front and rear for injecting compressed air into the yarn passage 14 to form a swirling flow.

In this case, one of the injection holes 15 injects pressurized air counterclockwise from the tangential direction into the thread passage 814 as shown in FIG. As shown, pressurized air is injected clockwise from the tangential direction into the yarn passage 14 to generate a Z twist. Further, the entrance 14a of the yarn passage 14 is formed into a conical shape so that the yarn can easily enter.

A gripper 17 for gripping and fixing the weft yarn 3 is arranged on the exit side of the injection nozzle 4 so that the twister 12 applies a sufficient twist to the weft yarn.

The gripper 17 and the twister 12 are driven in synchronization with the shedding of the warp yarns 2 or the driving of the injection nozzle 4.

Furthermore, cutters 18 and 19 made of heaters, scissors, or the like are arranged between the injection nozzle 4 and the gripper 17 and between the entrance of the twister 12 for cutting the twisted weft yarn 3.

Next, the operation of the embodiment will be described.

When the warp yarns 2 are opened, the jet nozzle 4 is driven, and a certain length of the weft yarn 3 stored in the pool drum 7 is driven from the jet nozzle 4 into the opening of the warp yarn 2, and the tip of the weft yarn 3 is inserted into the twister. 12 thread passages 14 and the thread road 10 of the suction nozzle 9.

Immediately after the injection nozzle 4 is driven, the gripper 17 and the twister 12 are driven, and the twister 12 turns around the weft 3, one end of which is gripped and fixed by the gripper 17 and the other end of which is suctioned and held with a predetermined tension by the suction nozzle 9. Add twist according to the flow. One end of the weft yarn 3 is fixed by the gripper 17, and the other end becomes a free end by suction and holding by the suction nozzle 9, so that the weft yarn 3 is given a real twist by the twister 12.

The time for the twister 12 to twist the weft yarn 3 is determined by the shedding speed of the warp yarn 2 and the twisting ability of the twister 12. By twisting the weft yarn 3 and forming the next opening in the warp yarn 2, the weft yarn 3 is woven into the warp yarn 2,
At that point, both ends of the weft yarn 3 are cut by the cutters 18 and 19, and the injection nozzle 4 inserts the weft yarn 3 into the next opening, so that the fabric is woven in sequence. The cut yarn end of the suction nozzle 9111i is blown off as waste yarn by the suction nozzle 9 and collected in a waste yarn collection box or the like.

In this way, since the weft yarn 3 can be twisted during the weaving process, the twisting process that was previously performed separately from the weaving process can be omitted, which not only eliminates the need for a twisting device but also reduces the time and effort involved in the twisting process. This can be omitted, resulting in significant cost savings.

In the above embodiment, a combination of two types of nozzles was used as the twister 12, but it is also possible to use only one type of nozzle, and the twister 12 may be a belt type one as shown in FIG. It may also have the function of a holding part as shown in FIG. Belt type twister 1
2 is a pair of belt devices 23, 24 in which an endless belt 22 is wound between two belt pulleys 20, 21, arranged so as to intersect with each other so as to sandwich the weft thread 3, and both belts 22, 22 are rotated in the direction of the arrow. By driving, the weft threads 3 are twisted. In this case, the belt is equipped with a double-sided belt that can be switched to S-twist or Z-twist depending on the direction of rotation of the belt 22°22! The belts 23 and 24 are opened and closed so as to sandwich and release the weft thread 3 between the belts 22 and 22. The twister 12, which has the function of a holding section, is used as a thread threader F! for inserting the weft into the main body 13, as shown in FIGS. 6 and 7. An injection hole 25 is formed to form a tangential flow of pressurized air into the yarn passage 14 to generate a swirling flow, and is inclined toward the exit so as to generate a suction flow. According to this twister 12, the weft yarn 3 can be twisted while being suctioned and applying a predetermined tension, so the suction nozzle 10 is not necessary.

[Effects of the Invention] In short, according to the present invention, it is possible to twist the weft yarns during the weaving process, so the twisting process, which was performed separately from the weaving process, can be omitted, and a twisting device is no longer necessary. In addition, the labor of twisting the yarn can be omitted, resulting in a significant cost reduction.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the loom according to the present invention, FIG. 2 is a sectional view of the twister, and FIG.
4 is a sectional view taken along line IV-■ in FIG. 2, FIG. 5 is a perspective view showing a belt-type twister, FIG. 6 is a sectional view showing a twister integrated with a holding part, and FIG. 7 is an end view thereof. In the figure, 2 is a warp, 3 is a weft, 4 is an injection nozzle, 9 is a suction nozzle which is a holding part, and 12 is a twister.

Claims (1)

[Claims] 1. A jetting nozzle is provided on one side of the warp to be opened and that jets and inserts a certain length of weft into the opening of the warp, and a holding part that sucks and holds the tip of the weft jetted from the jetting nozzle on the other side; A loom characterized by being equipped with a twister that twists the weft threads.