JPS60246849A - Weft yarn guide apparatus in fluid jet type loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a weft guide device for a fluid jet loom, and more particularly to an improvement in the method for installing a weft guide member.

Conventional fluid jet looms, especially in air jet looms, have a large number of weft guide members lined up on the slay to form a guide path for the weft. Inserting the guide member into the warp opening,
Some machines carry out the weft insertion operation by causing the weft to fly within the weft guide passage using pressure fluid injected from a main nozzle located at the end of the machine.

In the above-mentioned weft insertion device t, the guide member is required to smoothly push the warp groups apart when entering the warp opening, for example, as shown in FIGS. 6 and 7.
The weft guide members 5 are arranged on a slay so as to be parallel to the warp threads, and the shape of the apex 9 is made sharp, and the arrangement and pitch of the weft guide members are changed.

In addition, as in Japanese Patent Publication No. 56-9981, one warp that is inclined inward due to the weaving shrinkage of the 1wk cloth is tied together on both sides of the weft insertion side and the non-weft insertion side, and the weft guide member is attached after mJ of the loom. It is also known that the arrangement is inclined with respect to the direction.

However, in all of the above-mentioned conventional devices, the weft guide member is arranged parallel to the warp.

Problems to be Solved by the Invention In the above conventional weft guide device ν, the weft guide member fixed on the slay so as to be parallel to the warp threads is
When the warp threads enter the warp row due to the backward movement of the reed and come into contact with the basting row during the shedding operation, there are warp threads that coincide with the ridgeline of the guide member and ride on the top. That is, when a warp coincides with the ridgeline of the weft guide member, the warp is prevented from sliding in the lateral direction by the adjacent warp, and as a result of being balanced, it remains on the ridgeline.

In this way, the warp threads once coincided with the ridgeline and ran aground.

Since the guide member is far away from the top, if weft insertion is carried out in this state, a so-called weft thread threading phenomenon will occur, resulting in fabric defects that differ from the correct weave. There were problems such as In addition, even if a warp strays from the ridgeline, it lags behind the other warps by one thread, so it enters the weft flight path during weft insertion and comes into contact with the inserted weft, causing a weft insertion error. There was a problem.

This phenomenon is particularly likely to occur when thin warp threads are used or when the warp pattern is high.

The occurrence of the above phenomenon is caused by the presence of a large number of warp groups, which makes it difficult for each warp to rub in the lateral direction, and the fact that the weft guide member is arranged parallel to the same warp group. This is due to the fact that the warp threads intersect with the warp threads in the direction of line contact.

Means for Solving the Problems The present invention provides a method for fixing the weft guide member on the slay.
The ridgeline of this weft guide member should intersect with the warp.

They are arranged at an angle.

Since the working weft guide member is inclined with respect to the warp thread row, the top of the weft thread guide member and the warp thread come into point contact when the reed enters the warp thread row with the backward movement of the reed. The warp threads in one-point contact are caused by the movement of the guide member, which retreats together with the reed.
Due to the relative movement of the warp threads with the shedding motion, the warp threads are swept along the top part of the guide member while moving smoothly.

Embodiment 1 Embodiment 1 FIGS. 1 to 4 show a first embodiment in which the apparatus of the present invention is taken out to an air jet room, and the following description will be given based on these drawings.

As shown in FIG. 2, a mounting groove 2 is provided in the sleigh 1 along the longitudinal direction of the sleigh 1, and a reed 3 is provided in the 1i'1 groove 2.
The weft guide member 5 and the auxiliary nozzle l' to the lower frame body 4; J
-y5 Two implanted six pulls, odd base block 79, and both are tightened and fixed by the tightening block 8. A large number of the guide members 5 are arranged in parallel along the weft insertion direction, and the guide holes 5a of the guide members 5 form a guide path 9 for the weft thread to be inserted.

As best shown in FIGS. 1 and 4, the guide member 5 is mounted on the slay 1 with its ridgeline 5b inclined at an angle α to the warp W row so as to intersect with the warp W row. The angle α indicates that the warp yarn W slides down quickly by %1 as the warp yarn W moves relative to the weft yarn guide member 5, and is selected based on parameters such as the warp yarn density and the weft yarn guide pitch. Auxiliary nozzles 6 are disposed at predetermined intervals between the guide members 5, and a guide member 10 (with the jaw portion 5C of the guide member 5 cut out) is disposed opposite thereto.
Figure 3b) is arranged.

At least one passage on the side of the machine stand when inserting the weft, the guide passage 9.
A main nozzle 11 is provided corresponding to the main nozzle 11, which injects pressurized air supplied from a pressure fluid source (not shown) during weft insertion to inject the weft yarn Y into the guide passage 9.This embodiment is configured as described above. In the example.

With the backward movement of the reed 3, the guide member 5.10
When entering the warp W row, the warp W and the guide members 5, 10
touch at one point on the top of the Therefore, the weft guide members 5, 1
Due to the relative relationship between the backward movement of the threads 0 and the shedding movement of the warp threads, the warp threads W move toward the weft thread guide member 5.0 as shown in FIG.
Move smoothly to either the left or right side of the guide member 5.10 along the top of the weft thread guide member 5.10, and immediately move the weft thread guide member 5.10
An operation is performed for the rake of the warp threads W. This is good even when a monofilament of, for example, 8 to 30 deniers is used as the thin warp.

Second Embodiment In the first embodiment, all the weft guide members arranged along the weft insertion direction are inclined at the same angle, but in this embodiment, as shown in FIG. Since the weft guide members 5 and 10 are inclined due to weaving shrinkage, the inclination angle of the weft guide members 5 and 10 that enter the warp in the inclined area is changed to the weft guide member 5 that enters the warp in the central area that extends perpendicularly to the reed 3. , 100 inclination angle, and maintains the optimum inclination angle α with the warp threads. In this embodiment, when looking at the inclination angle when fixing the weft guide members on the slay 1, an appropriate number of weft guide members 5.
10 is inclined at a smaller angle of inclination than the weft thread guide elements 5.10 in the central region. Conversely, the appropriate number of weft guide elements 5.10 corresponding to the inclined warp areas on the weft insertion side are inclined in the opposite direction to the weft guide elements 5.10 in the central area.

As described above, in this embodiment, the weft guide members in the surface area are arranged to be inclined in accordance with the inclination angle Fζ of both ends of the warp due to the weaving shrinkage P, so that the weft guide members in the surface area are inclined with respect to the warp. The angle α is kept the same.

In addition, in the present invention, the direction of inclination may be either left or right. Further, in the second embodiment, by utilizing the warp inclination state on both ends, the weft guide member in this part is made parallel to the loom @ side direction as before,
1. Only the weft guide member located on the center side where the warp is not inclined. It is also possible to arrange them in an inclined state with respect to the same warp.

Effects of the Invention When the weft guide member enters the warp row, the warp and weft guide member intersect at an optimal angle and are in point contact, so that the weft guide member can perform a good warp scraping operation. Therefore, inconvenient phenomena such as weft insertion errors and warp thread breakage can be reduced as much as possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a first embodiment of the present invention. Fig. 2 is a side sectional view showing an assembly mode of the present invention, Fig. 3a,
b is an explanatory diagram showing a weft guide member adopted in the present invention;
FIG. 4 is an explanatory diagram showing the contact state between the weft guide member and the warp of the present invention, FIG. 5 is a schematic plan view showing a second embodiment of the present invention, and FIG. 6 is a schematic plan view showing a conventional device. Figure 7 shows
It is a front view of a weft guide member. 1. 1 Nislay 3: Reed 5. 10: Weft guide member 5b: Edge line of weft guide member 6: Sub nozzle 9: Weft guide passage 11: Main nozzle Y: Weft W: Warp Patent applicant Stock, Company Toyota Industries Ltd. Fig. 2 3rd flash (a) (b) 411th! if 7th m

Claims (1)

[Scope of Claims] l) A large number of weft guides are arranged in parallel along the weft insertion direction on the slay in order to form a guide path for the weft threads inserted by fluid, and one weft thread guide enters the warp opening during weft insertion. 2) The weft guide device according to claim 1, wherein at least the guide ridgeline in the center of the woven fabric intersects the warp. 3) an appropriate number of the guide members that enter the ends of the warp;
The weft guide device according to claim 1, wherein the guide member is inclined at a different angle from the guide member that enters the warp center.