JPS60155752A - Wefting 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 The present invention provides a fluid injection type loom in which an auxiliary fluid injection port for pulling the weft is arranged along a weft guide passage formed by arranging a large number of weft guide members in parallel in the weaving direction. The present invention relates to a weft insertion device.

BACKGROUND OF THE INVENTION This type of weft insertion device employs, for example, a guide type auxiliary nozzle 3 having substantially the same shape as a large number of weft guide members 2 arranged in parallel on a sled 1, as shown in FIG. In this auxiliary nozzle 3, the weft guide hole 2 of the weft guide member 2
A plurality of auxiliary fluid injection ports 3b are provided on the peripheral wall of the weft guide hole 3a, which forms a guide path S for the weft Y that is ejected from the main nozzle 4 and inserted. The injection port 3b has a valve 5 which is opened and closed in synchronization with the rotation of the loom.
, a sub-tank 6 and a pressure controller 7 to a compressed fluid supply source (not shown). That is, the injection port 3b
are in communication with each other through a fluid passage 3C in the auxiliary nozzle 3, and the injections from each injection port 3b are performed simultaneously and have the same injection pressure. Therefore, in this guide type auxiliary nozzle 3, the injection amount cannot be adjusted at a certain set pressure value. Therefore, weft insertion conditions such as adjusting the auxiliary fluid injection pressure and injection flow rate for different types of weft Y, such as filament yarns without fluff and spun yarns with fluff, or differences in yarn ridges such as thick yarn and silk yarn, are required. Although it is preferable to appropriately set the above-mentioned guide-type auxiliary nozzle 3, it is difficult to stabilize the weft insertion because the guide-type auxiliary nozzle 3 cannot accommodate such measures. For example, filament yarn flies without much vibration, but spun yarn easily vibrates.
During flight, it tends to fly out from the weft guide path S through the slit-shaped escape openings 2b and 3d, so for example, when thick filament yarn is used, it is necessary to support and pull it with a sufficient auxiliary fluid jet flow rate. When a thin filament thread is used, it is desirable to prevent optical vibrations and prevent the above-mentioned flying out by applying a low injection pressure. However, with the guide type auxiliary nozzle 3, it is possible to prevent weft yarn vibration with a small injection flow rate by using only the upper injection port 3b near the escape opening 3d, and to actively avoid the weft yarn from the escape openings 2b and 3d. Can not.

Purpose The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a weft insertion device for a fluid jet loom, which is capable of stabilizing weft insertion based on appropriate composition of auxiliary fluid flows. It is about providing.

Structure In order to achieve the above-mentioned object, the present invention divides the weft thread guide passage into a plurality of regions, and arranges a plurality of auxiliary fluid jet ports for pulling the weft thread in each region so that the projected positions in the direction of the guide passage are different. At the same time, the plurality of auxiliary fluid injection ports are connected to a plurality of fluid supply systems having different supply conditions.

Embodiment Hereinafter, an embodiment embodying the present invention will be described based on FIGS. 2 and 3. A plurality of guide type auxiliary nozzles 11 are provided between a number of weft guide members 10 arranged in parallel on the slay 1. A plurality of injection ports 11b and 11C are provided at intervals on the peripheral wall of the weft guide hole 11a of each nozzle 11.

As shown in FIG. 3, the nozzle group 11b provided on one arm forming the weft guide hole 11a is an electromagnetic type that opens and closes in synchronization with the rotation of the loom. Alternatively, it is connected to a compressed fluid supply source (not shown) via a fluid supply system F1 consisting of a mechanical valve 12, a sub-tank 13, and a pressure controller 14. On the other hand, the injection port group 11c provided in the other arm forming the weft guide hole 11a is also a fluid passage 11e1 formed in the auxiliary nozzle 11.
It is connected to the compressed fluid supply source through a fluid supply system F2 that is pressure independent from the supply system F1 that includes a valve 15, a sub-tank 16, and a pressure controller 17. In addition, as shown in FIG. 2, the main nozzle 18 has a valve 19 and a sub tank 2.
0 and a pressure controller 21 to the compressed fluid supply source.

In this embodiment, by keeping either one of the valves 12, 15 open at all times regardless of the operation of the loom, it is possible to change the flow rate and direction of the auxiliary fluid jetted from the auxiliary nozzle 11.

Therefore, when a thin spun yarn is used as the weft yarn Y, if only the valve 15 is kept inactive, the auxiliary fluid injection from the auxiliary nozzle 11 is performed only from the injection port group 11b, and both valves 12. The auxiliary fluid injection flow rate is reduced by almost half compared to when all of the auxiliary fluids 15 are activated. Therefore, the fluid in the weft guide passage S is in a low pressure state, and the weft Y
The driving force is not that great. As a result, there is no fear that the weft yarn Y made of spun silk yarn will be cut.

Further, the auxiliary fluid jetted from the injection port group 11b has the effect of keeping the weft yarn Y away from the escape openings 10b and 11f, thereby preventing the weft yarn Y from jumping out from the weft yarn guide path S.

On the other hand, when a thick filament yarn is used as the weft yarn Y, both valves 12.15 are operated to inject the auxiliary fluid from both injection port groups 11b and 11c. By changing this jetting condition, weft Y consisting of thick filament yarn
is supported by the jet flow from the nozzle group 11C, and the jetting out phenomenon is prevented by the jet from the nozzle group 11b.

That is, in this embodiment, the auxiliary fluid jetting direction and pressure in the weft guide passage S are combined based on the combination of the jetting port groups 1.1b and 11C, and the auxiliary fluid jetting flow is adjusted appropriately for different types of wefts. Can be set. This makes it possible to always maintain a stable weft insertion state regardless of the type of weft.

In addition, not only can the combination of jets from the jet nozzle groups 11b and 110 be the same for all guide type auxiliary nozzles 11, but also when using a thin spun yarn such as λ, the weft posture after weft insertion is Guide-type auxiliary nozzle 1 located on the outside of the anti-cotton survey (the rightmost side in Figure 2) to prepare the
1, the auxiliary fluid may be injected from both injection port groups 11b and 11c.

By the way, in the embodiment, the pair of injection port groups 11b, ll
C is provided in one guide type auxiliary nozzle 11,
Both injection port groups 11b and 11c are connected to a pair of mutually independent fluid supply systems F1. However, in addition to the above-mentioned embodiment, the embodiment shown in FIGS. 4-5 is also possible in the present invention.

In this embodiment, as shown in FIG. 4, the weft guide passage MS is arranged in a plurality of areas 81. S2.83.84. ．． The guide type auxiliary nozzle 22゜2 is divided into 85.36 parts and has three types of guide type auxiliary nozzles as shown in Fig.
3.24 are arranged at predetermined intervals. Each auxiliary nozzle 22, 23, 24 has a group of auxiliary fluid injection ports 22, respectively.
a, 23a, 24a are provided, and each injection port group 228.23a, 24a is connected to a valve 25.2, respectively.
6.27, a fluid supply system F3. consisting of a sub-tank 28°29.30 and a pressure controller 31, 32.33, which are pressure independent from each other. F4. It is connected to a compressed fluid supply source (not shown) via F5. Nozzle groups 22a, 23a, 24a
When projected in the weft insertion direction, the projected positions of the respective injection ports are significantly different, and their arrangement relationship is almost the same as that of the guide type auxiliary nozzle 11 in the previous embodiment.

In this embodiment, the jets from the respective nozzle groups 228.degree. 23a and 24a can be combined, and the conditions for jetting from each nozzle group can be appropriately set according to the type of weft.

Of course, the jetting from each guide-type auxiliary nozzle 22, 23, 24 can also be carried out sequentially in a relay manner as the tip of the weft Y reaches the tip. For example, when a spun yarn of silk is used as the weft yarn Y, the valve 26 is kept in an activated state and the auxiliary fluid is injected only from the guide-type auxiliary nozzles 22 and 24, thereby reducing the auxiliary fluid injection path and spraying. The spout groups 22a and 24a may be used in row 4 to prevent the weft yarn Y from flying out and to pull the cotton yarn.

In this example, each divided area is 81.82.83°84.8
The three guide-type auxiliary nozzles 22, 23, and 24 provided in each of the guide type auxiliary nozzles 22, 23, and 24, respectively provided in the auxiliary nozzles 22, 23, and 24, form a set and derive almost the same effect as the guide-type auxiliary nozzles 11 in the aforementioned embodiment, and in this sense, the aforementioned It can be considered that the injection ports 11b and llc of the guide type auxiliary nozzle 11 in the embodiment are arranged in a plurality of regions S' obtained by dividing the weft guide path S, as shown in FIG.

The present invention connects a plurality of auxiliary fluid injection ports arranged in each divided area to a plurality of mutually independent fluid supply systems, and appropriately synthesizes the auxiliary fluid jet flow within the divided area to stabilize weft insertion. It is now possible to achieve this.

Note that the present invention is not limited to the above-mentioned embodiment, and for example, as shown in FIG.
The plurality of injection ports 34a and 34b provided in
c, 34d are connected at the starting end, and a flow rate adjustment valve 35.3 is installed in both passages 34G, 34d, respectively.
There are 6. In this embodiment, the flow rate regulating valve 35.
By adjusting 36, the injection flow rate from both injection port groups 34a and 34b can be adjusted.

34b are independent of each other in injection flow rate. Therefore,
By adjusting the flow rate adjustment valves 35 and 36, the auxiliary fluid jet flow from the guide type auxiliary nozzle 34 can be appropriately combined, and weft insertion can be stabilized.

In the embodiment shown in FIG. 7.8, a pair of rod-shaped auxiliary nozzles 48 and 49 are erected on the base block 37 facing the weft guide member 38 planted on the base block 37 mounted on the slay 1. and valves 40 and 4 respectively.
1. A pair of mutually independent fluid supply systems F6. consisting of sub-tanks 42 and 43 and pressure controllers 44 and 45. Auxiliary nozzles 48 and 49 are connected to F7, respectively. Therefore,
In this embodiment as well, the auxiliary nozzle 4 is
Weft insertion can be stabilized by the combination of 8.49 nozzles 48a and 49b (1).

The shape and arrangement of the rod-shaped nozzles 48 and 49 are as specified in Section 9.1.
This is also possible in the example of Figure 0 and the example of Figures 11 and 12.

Effects-F As described in detail, the weft insertion device of the present invention inserts the weft by connecting the plurality of auxiliary fluid injection ports in the area obtained by dividing the weft thread guide passage to the plurality of mutually independent fluid supply systems. This has the excellent effect of constantly stabilizing weft insertion.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional weft insertion device, Figs. 2 and 3 show an embodiment embodying the present invention, Fig. 2 is a front view showing the entire sley, and Fig. 3 is a main nozzle. Figures 4 and 5 are perspective views showing the weft insertion device in the vicinity; Figures 4 and 5 show other examples; Figure 4 is a front view without showing the entire sley; Figure 5 is a perspective view showing the weft insertion device near the main nozzle; Figure 6.7 is a side view showing another example of the weft insertion device, Figure 8 is a sectional view taken along line A-A in Figure 7, Figure 9 is a side view showing another example, and Figure 10 is a side view showing another example. 9
11 is a side view showing still another embodiment, and FIG. 12 is a sectional view taken along the line CC in FIG. 11. Auxiliary nozzle 11.22.23.24, 34.48.49
, injection ports 11b, 11c, 22a, 23a, 24a
, 34a, 34b, 48a, 49a, fluid supply system F1. F2. F3. F4. F5. F6°F7, weft guide passage 81 divided area S', S1. S2.83. S4. S5
．． 86, Weft Y0 Patent 11 Patent University Toyota Automobile Co., Ltd. #1
llI Seisakusho Representative Patent Attorney On 1) Hironobu Figure 6 - Figure 10 Figure 12

Claims (1)

[Claims] 1.19 In a fluid jet loom, in which a large number of weft guide members each having a thread guide hole are arranged in parallel in the hooking direction, and a guide passage for the weft inserted by fluid is formed by the row of the weft guide holes, the weft guide The passage is divided into a plurality of areas, and a plurality of auxiliary fluid injection ports for weft pulling are arranged in each area so that the projected positions in the direction of the weft thread guide path are different, and the plurality of auxiliary fluid injection ports are mutually arranged. Fluid I! is characterized by being connected to multiple independent fluid supply systems! JtJJ
Weft inserting device for type looms. 2. All of the plurality of auxiliary fluid injection ports in the divided area are 1
Weft insertion device in a fluid injection type loom according to claim 1, wherein the weft insertion device is provided in two guide type auxiliary nozzles, and each injection port is connected to one of a pair of mutually independent fluid supply systems. . 3. The weft insertion device for a fluid injection type loom according to claim 1, wherein the plurality of auxiliary fluid injection ports in the divided area are distributed over a plurality of guide type auxiliary nozzles. 4. All of the plurality of auxiliary fluid injection ports in the divided area are 1
Claim 1, wherein the injection port group is provided in one guide type auxiliary nozzle, and one group and the remaining injection port groups are respectively connected within the auxiliary nozzle through a pair of flow rate adjustment valves. Weft inserting device for fluid jet looms. 5. The fluid injection according to claim 1, wherein the plurality of auxiliary fluid injection ports in the divided area are distributed in a pair of rod-shaped auxiliary nozzles connected to a pair of mutually independent fluid supply systems. Weft inserting device in Type 11 machine.