JPH0315576Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention aims to assist the flight of the weft thread inserted into the weft guide passage formed by a large number of weft guide members using a jet of fluid, along the guide passage. The present invention relates to a device for adjusting the spray angle of a plurality of auxiliary nozzles provided in a row.

PRIOR ART In general, in a fluid injection type loom, a plurality of auxiliary nozzles are provided at appropriate intervals along the guide path in order to assist the flight of the weft yarn injected from the main nozzle into the weft guide path. measures are being adopted. The fluid jetted from the nozzle not only assists the flight of the weft threads, but also affects the stabilization of the weft flight, which in turn affects the quality of the woven fabric. Therefore, it is necessary to appropriately adjust the jetting conditions from the auxiliary nozzle and set the optimal weft insertion conditions.
Therefore, in the past, the injection direction from the auxiliary nozzle that affects the flying state of the weft, that is, the angle of the injection direction with respect to the weft guide path direction (hereinafter referred to as
In order to adjust the spray angle, an auxiliary nozzle is rotatably provided on a support block fixed to the slay, and the spray angle can be adjusted according to weaving conditions such as the weaving width of the woven fabric and the type of weft. Adjustments are being made as appropriate.

However, this injection angle adjustment is done by applying a jig to the support block and rotating the nozzle nut with a spanner, so it is difficult to adjust the spray angle when the auxiliary nozzle is no longer concealed by the warp by turning up the woven fabric toward the reed. This adjustment work has to be done at the same time, which is very complicated and difficult. Furthermore, the large number of auxiliary nozzles used (usually up to several dozen) also prolongs the working time.

Furthermore, the method of adjusting the auxiliary nozzles one by one tends to cause variations in the adjusted spray angle of each nozzle.

Purpose The present invention was developed in consideration of the above-mentioned problems, and its purpose is to be able to simultaneously adjust the spray angles of all auxiliary nozzles or a group of them, and to release the concealment state of the auxiliary nozzles by the warp threads. An object of the present invention is to provide a jet angle adjusting device for an auxiliary nozzle in a fluid jet loom, which allows the jet angle adjustment work to be performed without performing any additional work.

Configuration In order to achieve the above-mentioned object, the present invention provides a plurality of auxiliary nozzles along the weft guide path formed on the slay in order to assist the flight of the weft inserted into the weft guide path formed on the slay by the jetting fluid. In a fluid injection type loom, each auxiliary nozzle is provided so that its rotational position can be adjusted by a support block fixed to the sley, and the spray angle can be set movably only when adjusting the other support blocks fixed to the sley. A configuration is adopted in which a transmission member is provided and the transmission member is engaged with at least one group of the plurality of auxiliary nozzles.

Embodiment Hereinafter, an embodiment embodying the present invention will be explained based on the drawings.A reed 2 having a function of guiding the weft yarn Y ejected from a main nozzle (not shown) is erected on the slay 1. There is. In other words, reed 2
A large number of reed blades 3 forming the loom are provided with guide holes 3a which are opened on the front side of the loom (lower side in FIG. 1), and a weft guide path S is formed by a row of the holes 3a.

A plurality of support blocks 4 are fixed to the front surface of the slay 1 in correspondence with the reed 2 at appropriate intervals so that their mounting positions can be adjusted, and a rod-shaped auxiliary nozzle 5 is attached to the block 4 downward by a snap ring 6. It is supported so that it can be pulled out and rotated. The injection hole 5a provided at the tip of the nozzle 5 is arranged near the weft guide path S.
The jetting fluid from the guide passage S assists the flight of the weft yarn Y inserted into the guide passage S. The auxiliary nozzle 5 is normally fixed and unrotatably fixed by a screw 20 screwed between a pair of arms 4a formed in a channel shape on the front surface of the support block 4.

A rack 7 is supported in the support groove 4b of the arm 4a of the support block 4 so as to be slidable in the longitudinal direction of the slay 1 (left-right direction in FIG. 1).
As shown in FIGS. 2 and 3, teeth 7a of a rack 7 serving as a transmission member are fitted into a notch 8a of a holder 8 fixed to the base end of the support block 4.
Therefore, when the rack 7 is moved from side to side, the auxiliary nozzle 5 is rotated with respect to the support block 4, and the spray angle indicated by .theta. in FIG. 1 is changed.

A spray angle setting mechanism 9 for adjusting the spray angle θ of the auxiliary nozzle 5 is provided on the front surface of the sley 1 on the weft insertion side. The setting mechanism 9 consists of a support block 10 fixed to the sleigh 1 and an angle setting block 11 rotatably fitted onto the block 10. The teeth 7a of the rack 7, which is supported in the groove 10a so as to be slidable in the left-right direction, are fitted into the notches 11a of the angle setting block 11. Therefore, by inserting a hexagonal wrench into the hexagonal hole 11b on the top surface of the angle setting block 11 and rotating the block 11, the rack 7 is moved left and right, and the injection angle .theta. of the auxiliary nozzle 5 is changed.

Note that the holder 8 is tightened and fixed with a screw 21, and is normally held unrotatable. Further, the rack 7 is fixed to the angle setting block 11 by a screw 22, and is normally held so as not to be slidable in the left and right directions.

Incidentally, a scale 12 for angle setting is provided on the upper surface of the support block 10.

Next, a procedure for adjusting the spray angle θ of the auxiliary nozzle 5 will be explained.

Now, the injection angle of the auxiliary nozzle 5 is set to θ as shown in FIG. In order to change the spray angle of the auxiliary nozzles 5 in accordance with changes in weaving conditions, the screws 20 of each auxiliary nozzle 5 are first loosened so that the auxiliary nozzles 5 can be rotated relative to the support block 4. Subsequently, the screws 21 and 22 are loosened to make the angle setting block 11 rotatable relative to the support block 10. In this state, angle setting block 11
When it is rotated by a predetermined amount, the rotation is transmitted to the holder 8 via the rack 7, and the holder 8 is rotated by a predetermined amount. Therefore, the auxiliary nozzle 5 is rotated to change the injection angle θ, but if the angle setting block 11 is rotated to the right, the injection angle θ becomes smaller, and if the angle setting block 11 is rotated to the left, the injection angle becomes smaller. The angle θ becomes larger.

After setting the injection angle, tighten each screw 20, 21, 22 to complete the injection angle changing operation.

According to this embodiment, the injection angle of each auxiliary nozzle 5 can be changed at the same time by simply rotating the angle setting block 11 by loosening the screws 20, 21, and 22. Therefore, it is no longer necessary to adjust the spray angle of each of the auxiliary nozzles 5 one by one. Therefore, the working time for changing the spray angle is shortened, and the operating efficiency of the loom is improved. In addition, tightening and loosening of the screws 20, 21, and 22 can be performed without any problem even when warp threads are present, which eliminates the complicated work of lifting the woven fabric toward the reed and releasing the state in which the auxiliary nozzle is hidden by the warp threads. This allows for further reduction of working time.

Moreover, since the amount of change in the spray angle of each auxiliary nozzle 5 is all the same, there is no variation in the spray angle between the auxiliary nozzles 5.

Note that the present invention is not limited to the above-mentioned embodiment, and the auxiliary nozzle may be divided into two groups, left and right, and the injection angles of both groups may be adjusted independently using injection angle setting mechanisms provided at both ends of the sley. In this way, it becomes possible to more appropriately control the weft thread flight during the first half of weft insertion and the second half of weft insertion.

Moreover, if the teeth 7a of the rack 7 are arranged as densely as possible, the degree of freedom in the mounting position of the auxiliary nozzle 5 is increased, and it becomes possible to more appropriately control the weft yarn flight according to the yarn type.

It is also possible to press a friction belt that is moved left and right by a suitable injection angle setting mechanism against the base end of the auxiliary nozzle, and to rotate the auxiliary nozzle by the left and right movement of the belt to adjust the injection angle.

Further, the present invention can also be embodied in a mechanism in which a weft guide path is formed by a large number of weft guide members arranged in parallel facing the reed.

Effects As detailed above, according to the present invention, by operating the transmission member, it is possible to adjust the injection angles of multiple auxiliary nozzles simultaneously and without causing variations in the injection angles of each auxiliary nozzle. ,
In addition, the simple structure allows the movement for adjustment to be transmitted reliably.Furthermore, during this setting work, there is no need to release the concealment state of the auxiliary nozzle by the warp threads, reducing the work time. This has the excellent effect of improving operating efficiency. .

[Brief explanation of the drawing]

The drawings show an embodiment embodying the present invention; FIG. 1 is a plan view showing the vicinity of the weft insertion side, FIG. 2 is a partially cutaway perspective view of the main part, and FIG. A
FIG. 4 is an enlarged cross-sectional view taken along the line B--B in FIG. 1. 2... Slay, 4, 10... Support block, 5
... Auxiliary nozzle, 7 ... Rack as a transmission member, S ... Weft guide passage, Y ... Weft, θ ... Spray angle.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Fluid jetting in which a plurality of auxiliary nozzles are provided along the weft guiding path formed on the slay in order to assist the flight of the weft inserted into the weft guiding path formed on the slay by the jetted fluid. In a type loom, each auxiliary nozzle is provided so that its rotational position can be adjusted by a support block fixed to the sley, and a transmission for setting the spray angle that is movable only during adjustment is provided to other support blocks fixed to the sley. 1. A jet angle adjustment device for an auxiliary nozzle in a fluid jet loom, characterized in that a member is provided, and the transmission member is engaged with at least one group of the plurality of auxiliary nozzles. 2. The injection angle setting mechanism is composed of a support block fixed to the front surface of the slay, and an angle setting block rotatably fitted from the top surface of the block, and supports the support block and the support block for the auxiliary nozzle. Claims for registration of a utility model, in which teeth of a rack-shaped transmission member slidably supported in a groove are fitted into a notch of the angle setting block and a notch of a holder fixed to the base end of the auxiliary nozzle. A jet angle adjusting device for an auxiliary nozzle in a fluid jet loom according to item 1.