JPS60146042A - Wefting 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 Technical Field This book 5 is based on the invention in which a jet fluid is used to form a guide passage for the weft thread inserted into the warp opening, and also to assist the flight of the weft thread inserted into the passage. This invention relates to a weft insertion guide device in a fluid nl sword type loom.

BACKGROUND OF THE INVENTION In general, a weft yarn that is inserted into a warp opening by a jetting fluid is discharged from a main nozzle into a weft guide passage formed by a large number of weft guide members arranged in parallel on a slay. This J, the weft guide hole 1a which forms the weft guide passage S as shown in Fig. 1.2 by the eel weft guide member.
The use of the weft thread guide member 1 having the escape opening 1b in the form of a sleeve 1 is advantageous in preventing leakage of fluid from the weft thread guide passage S. In order to assist the flight of the weft inserted into the weft guide path S formed by the guide portion 4Δ1,
Conventionally, a sword-shaped auxiliary nozzle 2 having the same shape as the guide portion 117j1 has been used. Inside the auxiliary nozzle 2, there is installed a fluid passage 211 that reaches around the weft guide hole 2a from its base end. is sprayed q1 into the weft guide path S toward the side opposite to the cotton inserting side from the jet hole 2C installed around the weft guide hole 2a. Injection from the guide type auxiliary nozzle 2 [J5 is performed in synchronization with the weft flight timing, and the timing setting must be accurate to prevent weft flight defects that can lead to cotton insertion mistakes.

The jetted fluid leakage from the weft guide passage S as described above causes the flying weft to jump out from the weft guide passage S through the escape opening 11), and the pressure horn distribution of the fluid in the weft guide passage S is This affects the flying condition of the weft yarns, which in turn can lead to weaving errors that can lead to weaving errors.

Therefore, as a means of adjusting the fluid flow in the weft guide passage S, a means is required to prevent the auxiliary fluid sprayed from the kite-type auxiliary nozzle 2 from colliding with the following weft guide member 1.
For example, as shown in FIGS. 1 and 2, it is conceivable to bring the jet 2C closer to the weft guide path S side. However, such arrangement of the injection holes 2G reduces the diameter of the guide hole 2a of the guide type auxiliary nozzle 2, and the weft guide path S
The weft yarn flying inside is likely to be obstructed by the peripheral wall of the weft guide hole 2a. Therefore, the flying posture of the weft within the weft guide path S is adversely affected.

Purpose The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a fluid injection type that can assist the weft flight without disturbing the weft flight in the weft guide passage by means of a guide type auxiliary nozzle. An object of the present invention is to provide a weft insertion guide device for a loom.

Structure In order to achieve the above object, in the present invention, the weft guide hole of the guide type auxiliary nozzle is formed in the weft insertion direction to have the same shape and at least the same size as the cotton yarn guide hole of the weft guide member, so that the weft guide hole of the guide type auxiliary nozzle An inclined surface is provided on the side opposite to the weft insertion side of the peripheral wall of the hole.The injection hole is provided on the same inclined surface (14
We adopted the following.

EXAMPLE Hereinafter, an example embodying the present invention will be explained based on FIGS. is omitted.

In this embodiment, the weft guide path S formed by the rows of weft guide holes 1a of the weft guide member 1 is levelless in the weft insertion direction as shown in FIG. In addition,
The circumferential wall of the weft guide hole 1a has a lower inclined surface 1 whose diameter decreases toward the side opposite to the lace-insertion side.
This is to converge and rectify the fluid flow within the weft guides 1 and to prevent fluid leakage from between the weft guides 1.

Guide-type auxiliary nozzles 2 arranged at predetermined positions in one row of weft guide members are formed to have the same shape and size as the weft guide member 1 in the weft insertion direction, and the weft guide holes 2a are located in the weft guide section RA1. Weft guide path S formed by
and there is no step difference. The peripheral wall of the guide hole 2a of the guide type auxiliary nozzle 2 consists of an inclined surface T for fluid convergence provided on the tightening side; A plurality of (or only one) injection holes 2G are provided. The injection hole 2C is formed so that the injection direction of the fluid injected from the circumferential hole 2C is almost perpendicular to the bottom of the inclined surface, and the injection fluid from the side hole 2C is directed to the weft guide following the guide type auxiliary nozzle 2. It joins the fluid flow in the weft guide passage S without colliding with the member 1.

Now, the fluid sent from the weft insertion side to the non-weft insertion side in the weft guide passage S flows through the slopes T1 of the peripheral walls of the weft guide holes 1a and 2a. The flow is rectified while being subjected to a converging action by T2, and the cotton thread is conveyed with its tip being pulled. When the tip of the weft reaches near (=J) of the guide type auxiliary nozzle 2, fluid is injected from the injection hole 20 of the nozzle 2,
The tip of the weft yarn is assisted and pulled. In this case, since the weft guide hole 2a of the guide-type auxiliary nozzle 2 is formed without a step difference from the weft guide path S, the possibility that the fluid flow that has pulled the weft will be disturbed by the peripheral wall of the weft guide hole 2a is reduced. Then, it smoothly merges with the injection fluid from the injection hole 2c. In addition, since the jet 1 fluid from the opening hole 2c does not collide with the following weft guide section 4A1, the jet flow is merged with the fluid flow in the weft guide passage S without being disturbed. . Therefore, the flying condition of the weft is maintained well, and the flying weft vibrates strongly and escapes from the weft guide path S at the openings 1b and 2.
The weft threads do not fly out through the threads d or J, and the weft posture is adjusted after weft insertion, improving the weaving condition of the woven fabric.

J3, the convergence inclined surface T1 of the weft guide member 1 is advantageous in avoiding the slow t#i disturbance caused by the collision of the weft guide member 1 with which the fluid jetted from the guide-type auxiliary nozzle 2 follows. The permissible range of the jetting direction of the jetting fluid from the hole 2C becomes larger, and it becomes easier to form a stepless state of the weft guide hole 2a with respect to the weft guide path S.

The present invention forms a weft guide passage without a step and eliminates collision interference between the fluid jetted from the guide type auxiliary nozzle and the following weft guide member, thereby adjusting the IIre DI fluid flow and stably inserting the weft. This method improves the weaving condition of the woven fabric or the flying condition of the weft yarns, which causes tightening errors from side to side.

J3, even if the guide passage of the guide type auxiliary nozzle is made larger than the guide passages of other weft guide members, the entire weft guide passage can be formed without any protruding parts, and the jetting fluid can be stably jetted. It is.

Further, although the permissible range of the jetting direction from the guide type auxiliary nozzle becomes smaller, the weft guide portion 1 and the inner wall surface of the passage of the guide type auxiliary nozzle may be formed in the furazo 1~.

Effects As described in detail above, the weaving guide device of the present invention has excellent effects in that it can appropriately control the jetting fluid to stabilize the weft flight, prevent weft insertion errors, and improve the crystallinity of the weave 1j. It has an effect.

[Brief explanation of the drawing]

Figures 1 and 2 show a conventional tightening guide device for a fluid jet loom, with Figure 1 being a side view of the main parts, Figure 2 being an enlarged sectional view of Figure 1, and Figure 3.4. (3L shows an embodiment embodying the present invention, FIG. 3 is a side view of the main part, and FIG. 4 is a side view of the main part.
13-B line enlargement...I side view of the figure. Guide type auxiliary nozzle 2, weft guide hole 2a1 jet 047t2
c, Inclined T1 weft guide path s0 Fig. 2

Claims (1)

[Claims] 1. A weft insertion guide device in which a large number of weft guide members each having a weft guide hole and an escape opening are arranged in parallel in the string insertion direction, and a guide passage for the weft inserted by fluid is formed by the row of the weft guide holes, A weft guide passage formed by a weft guide member, and a weft guide hole of a guide-type auxiliary nozzle disposed at a predetermined position of the weft guide member row to assist the flight of the weft inserted into the weft guide passage. 11rj I
Jj is a fluid jet loom that is characterized by the J hole.
+, -J weft insertion guide device.