JPH0243906Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) The invention is based on the invention by installing an auxiliary nozzle in the weft insertion direction to assist the flight of the inserted weft from the main nozzle for weft insertion into the weft opening. The present invention relates to a fluid injection control device for a fluid injection type loom having a plurality of valve mechanisms disposed in a plurality of auxiliary nozzles and sequentially relay-controlling fluid supply to these auxiliary nozzles in the weft insertion direction.

(Prior Art) Generally, in a fluid injection loom, in which the flight of the weft yarn injected from the main nozzle for weft insertion into the weft opening is assisted by a plurality of auxiliary nozzles arranged in the weft insertion direction, It becomes necessary to adjust the timing of fluid injection in each of the auxiliary nozzles according to weaving conditions such as the weaving width of the cloth and the type of weft yarn. Therefore, in the past, for example, as shown in FIG. 5, the weft yarns injected from a main nozzle (not shown) into the weft guide path S formed by the so-called deformed reed 2 erected on the slay 1 fly. A joint tube 4a of a pressure gauge 4 is hermetically connected to the injection hole 3a of the auxiliary nozzle 3 that assists the flow, and fluid is supplied to the nozzle 3 below the slay 1 while confirming the fluid injection in the auxiliary nozzle 3 using the pressure gauge 4. The opening and closing timing of the valve mechanism 5, which controls the valve mechanism 5, was adjusted. That is, in the illustrated case, the rod 5 is connected to the valve by a cam lever 8 that swings with the rotation of a valve cam 7 that is fixed to a drive shaft 6 that rotates in synchronization with the machine base so that the mounting angle and position can be adjusted.
A is moved up and down to open and close the valve, and the opening and closing timing of the valve is adjusted by adjusting the mounting angle position of the valve cam 7. A plurality of such valve mechanisms 5 are provided, and by performing the opening/closing operation of each valve mechanism 5 in a relay-like manner, the fluid jetting of the auxiliary nozzle 3 from the main nozzle side to the weft insertion side is relay-controlled. It's getting old.

Therefore, in order to adjust the fluid injection timing in each auxiliary nozzle 3 according to weaving conditions such as the weaving width of the woven fabric and the type of weft yarn, it is necessary to sequentially adjust the mounting angle position of the valve cam 7. In order to attach the pressure gauge 4 to the auxiliary nozzle 3 corresponding to the mechanism 5 for each adjustment, it is necessary to move to the attachment work place, but the coordination between this attachment work and the adjustment work of the mounting angle position of the valve cam 7 is difficult. A roller 9 for winding up the cloth W, a surf roller 10,
There is a problem in that it is obstructed by the expansion bar 11 and the like.

A fluid injection detection device for solving this problem is disclosed in Japanese Patent Application No. 59-2392 (Japanese Patent Application Laid-Open No. 60-146043). In this device, the fluid take-off parts connected to each valve mechanism are centrally arranged in one place, and a fluid pressure detector is connected to the take-out part, so that the fluid pressure is detected every time the opening/closing timing of the valve mechanism is adjusted. The troublesome work of connecting the device to the auxiliary nozzle is eliminated. However, in this device, it is difficult to set the mounting location of the box in which the fluid outlet is centrally arranged, or it is inconvenient to carry the box, and the injection timing of the auxiliary nozzle 3 must be adjusted at each valve position. As a matter of necessity, there is the inconvenience of having to go back and forth between the same valve position and the centrally located box each time a fluid pressure sensor is connected to each fluid outlet of the centrally located box.

(Problem to be solved by the invention) In other words, the problem to be solved by the present invention is the poor coordination between the fluid injection confirmation work in the auxiliary nozzle and the opening/closing timing in the valve mechanism. It is possible to easily adjust the timing of relay injection in the nozzle and increase the operating rate of the loom.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an auxiliary nozzle for assisting the flight of the weft yarn injected from the main weft insertion nozzle into the weft opening. In a fluid injection type loom equipped with a plurality of valve mechanisms that sequentially relay control fluid supply to these auxiliary nozzles in the weft insertion direction, the valve mechanism or the valve mechanism's A connection part to which a fluid pressure detector can be attached was provided in the vicinity of the fluid supply path from the valve mechanism to the auxiliary nozzle.

(Function) That is, when adjusting the opening/closing timing of the valve mechanism by attaching a fluid pressure detector to the connection part, it is possible to check the operation of the fluid pressure detector without moving from the adjustment work place. It is possible to easily check the fluid ejection at the auxiliary nozzle connected to the same valve mechanism.

(Example) Hereinafter, examples 1 to 3 that embody the present invention will be described.
To explain based on the drawing, a reed 22 is provided on the sleigh 21 and has a function of guiding the weft yarn ejected from a main weft insertion nozzle (not shown). That is, a large number of reed feathers 23 forming the reed 22
A guide hole 23a is provided on the front side of the loom (on the left side in FIG. 1), and a weft guide path S is formed by a row of the holes 23a.

A plurality of support blocks 24 (only one is shown in the drawing) are fixed to the front surface of the slay 21 in correspondence with the reeds 22 at appropriate intervals so that their mounting positions can be adjusted. 25 is inserted so as to be vertically slidable and rotatable, and is tightened and fixed with a screw. The injection hole 25a provided at the tip of the nozzle 25 is arranged near the weft guide path S.
The jetting fluid from the weft assists the flight of the weft inserted into the guide passage S.

An auxiliary nozzle 25 is attached to a support bar 26 installed in the longitudinal direction of the sley 21 below the sley 21.
a plurality of valve mechanisms 27 for controlling fluid supply to the
(only one shown in the drawing) is the mounting bracket 28
It is attached via. A valve cam 30 corresponding to each valve mechanism 27 is fastened to a drive shaft 29 which is rotationally driven in synchronization with the rotation of the machine base with a screw 31 so that the mounting angle position can be adjusted. A cam lever 32 rotatably supported at the tip portion is configured to swing back and forth as the valve cam 30 rotates. A pressing member 34 that contacts a rod 33 connected to a valve 35 of the valve mechanism 27 is fixed to the lever 32, and the pressing member 34 moves the rod 33 up and down as the cam lever 32 swings. It's becoming like that.

Next, the valve mechanism 27 will be described in detail. As shown in FIG. 2, a cap 37 is screwed onto the lower end of a housing 36 that accommodates a valve 35. It protrudes downward from. A spring 39 is interposed within the cap 37 between a spring receiver 38 fixed to the rod 33 and the lower end of the housing 36, and the valve 35 is urged in a direction to close the fluid passage T within the housing 36. ing. Further, a supply pipe 40 connected to a compressed fluid supply source (not shown) is screwed onto the circumferential surface of the housing 36 so as to communicate with the fluid passage T.

On the other hand, a connection cap 41 is screwed onto the upper end of the housing 36, and a supply pipe 4 connected to the auxiliary nozzle 25 is attached to the circumferential surface of the cap 41.
2 is screwed on.

A connecting portion 44 is provided on the lower side of the supply pipe 42 to which a connecting tube 43a of a pressure gauge 43 as a fluid pressure detector shown in FIG. 1 can be attached. The connecting portion 44 includes a housing tube 45 screwed onto the connecting cap 41, a slide body 46 slidably housed within the housing tube 45, and a spring 47 that presses the slide body 46 outward.
and a cylindrical cap 48 which restricts the outward sliding of the slide body 46 and forms a mounting hole 48a for mounting the connection tube 43a of the pressure gauge 43.
A passage 46a provided therein does not always communicate with the connection cap 41.

Now, in order to adjust the injection timing in the auxiliary nozzle 25, first, the machine base is adjusted to the machine base rotation angle corresponding to the set injection timing in the auxiliary nozzle 25. Then, as shown in FIG. 3, connect the connecting tube 43a of the pressure gauge 43 to the mounting hole 48a of the connecting portion
Attach to. Then, the slide body 46 is pushed into the connection cap 41 against the spring 47, and the passage 46a communicates with the connection cap 41. Next, loosen the screw 31 that tightens and fixes the valve cam 30, and align the valve cam 30 with respect to the drive shaft 29.
When the valve cam 30 is rotated, the pressure gauge 43 indicates a pressure value corresponding to the angular position of the valve cam 30. Therefore, the pressure gauge 43
The valve cam 30 is adjusted and set to the angular position where the pressure value indicated by becomes the peak. After adjusting the angular position of the valve cam 30, tighten the screw 31 again to secure the valve cam 30, and the auxiliary nozzle 2
The injection timing adjustment work in step 5 is completed.
When performing such injection timing adjustment work,
In this embodiment, the connecting tube 43a of the pressure gauge 43 is attached to the connecting portion 44, so that the pressure gauge 43 can be placed near the valve cam 30 that substantially controls the injection timing in the auxiliary nozzle 25. Therefore, the indicated pressure value on the pressure gauge 43 can be confirmed while adjusting the angular position of the valve cam 30. In other words, the fluid injection confirmation work in the auxiliary nozzle 25 and the angular position adjustment work of the valve cam 30 are very well linked, and the auxiliary nozzle 2
The injection timing adjustment work in step 5 is very easy.

Injection timing adjustment for each auxiliary nozzle is performed in sequence according to the same procedure as described above, and relay injection timing adjustment is performed in sequence, but in any case, while adjusting the angular position of the valve cam 30, The commanded pressure value can be checked, and the relay injection timing can be adjusted very easily. Therefore, the working time for adjusting the injection timing is shortened compared to the conventional method, and the operating rate of the loom is improved.

In this embodiment, even if there is fluid leakage when the valve 35 is in the closed state, the pressure gauge 43 can detect the fluid leakage.

In addition to the embodiments described above, the present invention can also be implemented in an embodiment shown in FIG. 4. In the same figure, Slay 2
Sub-tank 4 in the longitudinal direction of Slay 21 below 1.
9 is arranged, and a plurality of valve mechanisms (only two are shown in the illustrated case) 5 are arranged on the same tank 49.
0,51 are attached at predetermined intervals. Each mechanism 50, 51 is driven in synchronization with the rotation of the machine base, and the driving force of a machine base rotation drive source (not shown) is applied to a drive shaft 5 operatively connected to the drive source.
3. The signal is transmitted to a rotary valve (not shown) via a driving gear 54 which is fixedly tightened to the coaxial shaft 53 with a screw so that its angle and position can be adjusted, and a driven gear 55 which meshes with the gear 54. A branch pipe 5 is provided on the top surface of each valve mechanism 50, 51.
6, 57 are installed and connected, and each branch pipe 56,
The auxiliary nozzles 25 are connected to each of the three auxiliary nozzles 57 . That is, during weft insertion, the valve mechanisms 50 and 51 are sequentially opened like a relay from the valve mechanism 50 on the main nozzle side (not shown) toward the weft insertion side, and the fluid jet from the auxiliary nozzle 25 is
It is designed to be carried out sequentially in a relay manner in this unit.

Each of the branch pipes 56 and 57 is provided with a connecting portion 44 to which a pressure gauge can be attached. Therefore, in order to adjust the injection timing in each auxiliary nozzle group, it is sufficient to adjust the mounting angle position of the drive gear 54 while checking the indicated pressure value of the pressure gauge attached to the connection part 44. As in the case of the embodiment described above, the fluid injection confirmation work in the auxiliary nozzle group and the installation angle position adjustment work of the drive gear 54 are very well linked, and the relay injection timing can be easily adjusted.

Further, in the present invention, in addition to the pressure gauge 43, it is also possible to use a fluid pressure detector such as a lamp lighting type that lights up a lamp when the pressure exceeds a predetermined pressure, a float type that causes a float to protrude based on fluid pressure, etc. In addition, a connecting portion to which these fluid pressure detectors can be attached is connected to the supply pipe 4 near the valve mechanism.
2, or may be provided in a valve mechanism that controls the main nozzle for weft insertion.

Furthermore, it is also possible to embody the present invention in a fluid injection type loom in which a weft guide path is formed by a large number of weft guide members arranged in parallel on a sleigh.
Further, the valve mechanism is not limited to one that is opened and closed by mechanical means, but may also be a valve that is electrically controlled to open and close using an electromagnet or the like, or a valve that is controlled to open and close using hydraulic pressure, air pressure, or the like.

Effects of the Invention As detailed above, the fluid injection control device of the present invention has the excellent effect of being able to easily adjust the injection timing in the auxiliary nozzle and improving the operating rate of the loom.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional view showing the Sley and the vicinity of the valve mechanism below it, FIG. 2 is a vertical cross-sectional view showing the valve mechanism, and FIG. The figure is a longitudinal cross-sectional view showing a state in which a fluid pressure detector is installed, FIG. 4 is a perspective view of essential parts showing another example of the present invention, and FIG. 5 is a longitudinal cross-sectional view showing a conventional fluid injection control device. 25... Auxiliary nozzle, 27, 50, 51... Valve mechanism, 30... Valve cam, 42... Supply pipe, 43... Pressure gauge as a fluid pressure detector, 4
4... Connection part, 56, 57... Branch pipe.

Claims (1)

[Scope of utility model registration request] A plurality of auxiliary nozzles are arranged in the weft insertion direction to assist the flight of the weft injected from the main nozzle for weft insertion into the warp opening, and fluid is supplied to these auxiliary nozzles in the weft insertion direction. In a fluid injection type loom equipped with a plurality of valve mechanisms that are sequentially controlled by relay, a connection part to which a fluid pressure detector can be attached is provided in the valve mechanism or in the vicinity of the valve mechanism in a supply path from the mechanism to the auxiliary nozzle. A fluid injection control device for a fluid injection type loom, characterized in that: