JPH043027Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) The present invention is a weft side length storage device in a jet room that selectively inserts a plurality of weft yarns supplied from a plurality of weft supply sources. This invention relates to a device for guiding the weft yarn between the weft inserting main nozzle and the weft inserting main nozzle toward the weft inserting main nozzle.

(Prior art) The flight state of the weft threads that are injected from the main weft insertion nozzle into the warp shedding is directly related to weft insertion errors or the quality of the woven fabric. By appropriately controlling the weft insertion errors, it is possible to avoid weft insertion errors and to weave high-quality woven fabrics. In particular, in the jet room where multiple weft yarns supplied from multiple weft supply sources are selectively inserted (so-called multi-color weft insertion), each weft yarn follows the high-speed rotation of the machine according to the weft insertion pattern. Since it is necessary to replace the weft yarn with the weft inserter, the flying state of the inserted weft yarn tends to become unstable.

Examples of such control means are disclosed in Japanese Utility Model Publication No. 50-16119 and Japanese Unexamined Patent Application Publication No. 59-59945. In the former control means, a weft extraction jet nozzle is disposed in front of a so-called drum pool type weft length measuring and storage device, and a curved air guide plate is interposed between the nozzle and the weft insertion main nozzle. In order to increase the speed of weft insertion while reducing the bending resistance at the bending part of the weft path between the drum length measurement storage device and the main weft insertion nozzle, the above-mentioned bending path configuration is necessary. This is effective for multi-color weft insertion, which is unavoidable.

In the latter control means, a plurality of weft pulling nozzles are arranged in a fan shape behind the main weft insertion nozzle, and each nozzle receives the weft from the weft supply source via a weft gripper so that the weft is almost parallel. A weft pulling device is installed on each weft path between the weft gripper and the weft pulling nozzle. That is, the weft is injected and introduced into the main weft insertion nozzle from the weft pulling nozzle according to the weft insertion pattern, and is injected from the main weft insertion nozzle into the warp opening, and the weft is inserted after cutting the weft at each weft insertion. The tip of the weft yarn that has entered the main nozzle for inserting the weft is pulled out from the main nozzle for inserting the weft by the operation of the weft pulling back device. With this configuration, it is attempted to deal with the problem of high-speed followability, which is a problem in a configuration in which any one of a plurality of weft insertion main nozzles is selectively placed at the weft insertion position, and furthermore, to optimize the weft insertion state. .

(Problem to be solved by the invention) However, in the former conventional device, the weft draw-out nozzle and the wind guide plate are fixedly installed so that they cannot be displaced, so the distance between the drum length measurement storage device and the main nozzle for weft insertion is It is impossible to change the weft thread path,
It is not possible to set the bending resistance according to weaving conditions such as the injection pressure in the main nozzle for weft insertion or the type of weft yarn. Therefore, it is difficult to always achieve a good weft insertion state by applying appropriate tension to the weft yarns flying in the warp shedding. Furthermore, when the main weft insertion nozzle is installed on the swinging slay, it becomes necessary to also install the baffle plate and the weft extraction nozzle on the slay, which inevitably complicates the structure.

In the latter conventional device, since it is necessary to reliably introduce the weft yarn ejected from a plurality of weft pulling nozzles into one weft insertion main nozzle, the arrangement relationship between the weft insertion main nozzle and the weft yarn pulling nozzle is essentially The former has no choice but to be fixed unchangeably, resulting in the same drawbacks as the former. Moreover, since the weft is kept bent in a U-shape by the pulling back device between the weft pulling nozzle and the weft gripper, it is difficult to pull out the weft when introducing the tip of the weft into the main nozzle for inserting the weft. The resistance becomes extremely large and has an adverse effect on the subsequent weft insertion.

Structure of the Invention (Means for Solving Problems) Therefore, in the present invention, a plurality of weft yarns supplied from a plurality of weft supply sources are guided through a weft guiding nozzle corresponding to each of the weft yarns. In a jet room for selectively inserting the weft threads from the weft inserting main nozzles, the weft inserting main nozzles are supplied to the weft inserting main nozzles provided on the sleigh in correspondence with the weft inserting main nozzles. Each weft guide nozzle is displaceably provided on the machine base, and the weft guide nozzle is formed between the weft length measuring and storage device corresponding to each weft and the main weft inserting nozzle via each weft guide nozzle. The multiple weft paths can be changed and adjusted independently.

(Function) That is, by performing a displacement operation of each weft guiding nozzle with respect to the main nozzle for weft insertion, the weft path and bending resistance from the weft length measuring and storage device to the main nozzle for weft insertion can be changed. It becomes possible to apply weft tension according to weaving conditions such as the injection pressure of the main nozzle for weft insertion or the type of weft.

(Example) Hereinafter, the first and second examples embodying the present invention will be described.
This will be explained based on the diagram.

As shown in Fig. 1, a pair of drum pool type weft length measuring and storage devices 2 and 3 are installed on the side of one side frame 1 of the machine, and are supplied from a pair of weft supply sources (not shown). weft Y1, Y
The lengths of the weft yarns are measured and stored in the weft length measuring and storage devices 2 and 3, respectively. The weft length measuring and storage device 2 comprises a drum 4 held stationary, a thread winding tube 5 which is rotated around the drum 4 a predetermined number of times in synchronization with the rotation of the machine, and a thread winding tube 5 that rotates around the drum 4 a predetermined number of times in synchronization with the rotation of the machine. It is composed of a weft locking pin 6 that protrudes and retracts from the surface, and a yarn unwinding number detector 8 provided on the inner peripheral surface of the cover 7 of the drum 4.
As the drum 4 rotates, the weft Y1 is wound around the drum 4 and stored. The winding yarn unwinding number detector 8 consists of a reflection type light emitting and receiving device, and is counted every time the winding yarn on the drum 4 is unwound and passes through the winding yarn unwinding number detector 8, and this count signal is used as a weft yarn. The information is sent to a control device (not shown) that controls the protrusion and retraction of the locking pin 6. The other weft length measuring and storing device 3 has exactly the same configuration, and a weft locking pin on the side of the same length measuring and storing device 3 controls the withdrawal of the weft Y2 which is measured and stored in the same length measuring and storing device 3. Also, its appearance and disappearance are controlled by the control device.

As shown in FIG. 2, on the side frame 1, a pair of cylindrical stands 9 and 10 are arranged side by side in the front-rear direction of the machine stand, and between the two cylindrical stands 9 and 10 there is a long support in the front-rear direction of the machine stand. A plate 11 is mounted and fixed. A pair of position adjustment holes 11a, 11b are transparently provided in the support plate 11 at an interval equal to the distance between the axes of both the cylindrical stands 9, 10 in the longitudinal direction.
The support plate 11 is fastened and fixed onto the cylindrical bases 9 and 10 by a pair of bolts 12 and 13 which are inserted through the cylindrical bases 9 and 10 and screwed onto the side frame 1. The position adjustment holes 11a and 11b are formed as elongated holes in a direction perpendicular to the longitudinal direction of the machine, that is, in the weft insertion direction, so that the mounting position of the support plate 11 can be adjusted in the weft insertion direction.

Position adjustment holes 11c and 11d are transparently provided at both ends of the support plate 11 in the longitudinal direction, respectively, and a cylindrical support member 14,
The lower screw parts 14a and 15a of 15 are inserted,
Each screw portion 14a, 1 on the lower surface side of the support plate 11
The cylindrical support members 14 and 15 are tightened and fixed upright by nuts 16 and 17 that are screwed into the ends 5a. The position adjustment holes 11c and 11d are formed as elongated holes in the longitudinal direction of the support plate 11, and the mounting positions of the cylindrical support members 14 and 15 can be adjusted and rotated in the longitudinal direction of the support plate 11.

Support hole 14 on the upper end side of the cylindrical support members 14, 15
Column-shaped support legs 18 and 19 are fitted into b and 15b so as to be able to move up and down, and are tightened and fixed with bolts 20 and 21. Weft yarn guiding nozzles 22 and 23 are fixedly installed at the upper end of each support leg 18 and 17, and the weft yarn Y on the weft length measuring and storage devices 2 and 3 is fixed.
1 and Y2 are introduced into weft guiding nozzles 22 and 23 via guides 24 and 25 in front of them, respectively. Both weft guide nozzles 22, 23
A pair of weft insertion main nozzles 27 and 28 are mounted on the front slay 26, and a switching mechanism (not shown) allows the weft insertion main nozzles 27 and 2 to be switched between the two weft insertion main nozzles 27 and 2.
According to the weft insertion pattern, either one of the weft threads 8 is switched to a weft insertion position, that is, to a weft guide path S formed on the front surface of the deformed reed 29 on the slay 26. Then, the main nozzle for weft insertion which is switched to the weft insertion position is operated, and the weft guiding nozzle corresponding to the main nozzle is selectively operated in synchronization with the main nozzle.

Now, as shown in FIG. 2, the weft insertion main nozzle 27 is arranged at the weft insertion position according to the weft insertion pattern, and the weft Y1 is ejected from the main nozzle 27.
is inserted into the injection weft. During this weft insertion period, the weft yarn Y1 which is pulled out and unwound from the weft length measuring storage device 2 is transferred to the weft yarn guide nozzle 22 in a state where the weft yarn guide nozzle 22 is operated and the weft yarn locking pin 6 is sunk into the drum 4. will be assisted at. When the unwinding of the winding yarn on the drum 4 is counted a predetermined number of times by the winding yarn unwinding number detector 8, the weft yarn locking pin 6 protrudes from the drum to stop drawing out the weft yarn Y1, and the weft yarn guiding nozzle 22 is deactivated. Then, as the sley 26 moves forward, the main nozzle 2 for weft insertion
7 and 28 are arranged at the beating position shown by the chain line in FIG. 1, and at this point beating is performed, and before this, the operation of the main nozzle 27 for weft insertion is stopped.

Weft yarn guide nozzles 22 and 23 that guide weft yarns Y1 and Y2 from each weft length measurement storage device 2 and 3 to each weft insertion main nozzle 27 and 28 can be installed by loosening bolts 12 and 13 on support plate 11. 11 in the weft insertion direction, the position can be adjusted in the weft insertion direction. Also, loosen the nuts 16 and 17 on the lower surface side of the support plate 11 to remove the cylindrical support members 14 and 15.
By sliding the weft thread guiding nozzles 22 and 23 in the longitudinal direction of the machine, the positions of the weft guide nozzles 22 and 23 can be adjusted independently in the longitudinal direction of the machine. At the same time, by rotating the cylindrical support members 14 and 15, the directions of the weft guide nozzles 22 and 23 toward the weft insertion main nozzles 27 and 28 can be adjusted independently. Further, the cylindrical support member 14,1
By loosening the bolts 20, 21 on the side surfaces of the weft yarn guiding nozzles 22, 23, the height positions of the weft guiding nozzles 22, 23 can be adjusted. Therefore, the above-mentioned adjustments are made according to the weaving conditions such as the type of weft yarn or the injection pressure in the main nozzles 27 and 28 for weft insertion, and the weft yarn between the weft length measuring and storage device 2 and the main nozzle for weft insertion 27 is adjusted as described above. By independently changing and setting the weft path and the weft path between the weft length measurement and storage device 3 and the weft insertion main nozzle 28, each weft yarn Y1, Y
2 can be provided with optimal bending resistance. By providing such bending resistance, the tension of the weft yarns Y1 and Y2 that are injected and inserted from the weft insertion main nozzles 27 and 28 is set to an appropriate state, and the weft yarn Y
A stable flying state of 1, Y2 can be achieved. In particular, when using the same type of weft yarns as the weft yarns Y1 and Y2 to make the woven fabric uniform (referred to as mixing), it is necessary to equalize the bending resistance of both weft yarn paths, but the above position adjustment is selected as appropriate. By doing so, the bending resistance can be made uniform.

Of course, the present invention is not limited to the above-mentioned embodiment, and the embodiment shown in FIG. 3, for example, is also possible. In this embodiment, cylindrical support members 14, 15
Support rods 30, 31 whose upper portions are bent into a crank shape are fitted into the support holes 14b, 15b, and are tightened and fixed with bolts 20, 21, and the upper ends of each rod 30, 31 have a weft Arms 32, 33 fixed to guide nozzles 22, 23
is rotatably fitted and fixed by bolts 34 and 35. The other configurations are the same as those of the previous embodiment. Therefore, in this embodiment, a new positional adjustment is added in which the two weft guiding nozzles 22 and 23 are independently rotated in the vertical direction, thereby making it possible to more precisely adjust the weft thread path. Third
The figure shows a case where the weft guide nozzle 23 is rotated downward as indicated by the chain line to make the adjustment.

Next, specific effects of each of the embodiments described above will be explained. The following problem exists between the weft insertion main nozzles 27 and 28 and the weft guide nozzles 22 and 23. That is, when the main nozzle for weft insertion and the weft guide nozzle are arranged as shown in FIG. Since the bending angle α2 of the weft yarn Y2 when the main weft insertion nozzle 28 inserts the weft and beats the weft yarn is different, the weft tension tends to be loosened on the Y1 side and tightened on the Y2 side, and as a result, However, depending on the type of fabric, a problem arises in that the edges become irregular. Second, when weft insertion is performed using the main weft insertion nozzle 28, if the bending angle β of the weft Y2 at the weft guide nozzle 23 is large, the pull-out resistance of the weft may increase depending on the type of weft. , a problem arises in that it has a large effect on weft insertion.

Therefore, in the present invention, to solve the first problem, the weft guiding nozzle 2 is installed as shown in FIGS. 4 and 6.
By adjusting the mounting positions of the weft yarn guide nozzles 22 and 23 so that their tips overlap with each other at an appropriate distance vertically, and by aligning the weft outlet ends of the weft yarn guiding nozzles 22 and 23, the reed beating can be achieved. Time weft Y1
By making the bending angles α1 and α2 of Y2 and Y2 almost the same, the paths of both wefts can be made almost the same, and the weft tension of the selvage of the fabric can be made uniform.

In addition, to solve the second problem, the weft guide nozzle 23 is adjusted as shown in FIG. The bending angle β of Y2 is small, and the pulling resistance of the weft Y2 can be reduced.

Incidentally, the adjustment for the above two problems is carried out in such a way as to solve the problem that is greatly affected by the type of weft and fabric used, and it is possible to perform a well-balanced adjustment.

Further, in the present invention, it is also possible to provide a pair of support plates similar to the support plate 11 and install one weft guiding nozzle on each of these support plates. It is also possible to apply the present invention to a jet room in which the main nozzle for weft insertion is installed on the machine frame side.

Further, the present invention can be applied to a jet room using a weft length measuring and storing device other than the weft length measuring and storing device of the above embodiment, as long as it is suitable for selecting multi-colored wefts.

Effects of the Invention As detailed above, according to the present invention, based on the displacement operation of each weft guiding nozzle with respect to the main nozzle for weft insertion, each weft length measuring storage device and the weft insertion The multiple weft thread paths formed between the weft insertion main nozzle and the weft insertion main nozzle can be changed and set independently, so the weft tension can be adjusted according to weaving conditions such as the injection pressure or weft type at the weft insertion main nozzle with a simple operation. This has the excellent effect of stabilizing the flying state of the weft during weft insertion by appropriately setting the bending resistance in the weft path.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a plan view, Figure 2 being a side view of the main parts, and Figure 3 being a side view of the main parts.
The figure is a side view of the main part showing another example of the present invention, Fig. 4 is a side view of the main part showing an adjustment example of the present invention, Fig. 5 is a schematic plan view showing the state before adjustment, and Fig. 6 is the main part side view showing another example of the invention. FIG. 4 is a schematic plan view, and FIG. 7 is a schematic plan view showing another example of adjustment. Weft length measurement storage device...2, 3, support plate...1
1, Cylindrical support member...14, 15, Support leg...1
8, 19, Weft guide nozzle...22, 23, Weft insertion main nozzle...27, 28, Weft thread...Y
1, Y2.

Claims (1)

[Claims for Utility Model Registration] 1. A method in which a plurality of weft yarns supplied from a plurality of weft supply sources are sledded through a weft guiding nozzle corresponding to each of the weft yarns. In a jet room where the weft is selectively inserted by supplying the weft to a main nozzle for weft insertion provided above and selectively inserting the weft from the main nozzle for weft insertion, each weft guiding nozzle is connected to the main nozzle for weft insertion. A plurality of weft thread paths are independently displaceably provided on the machine base and are formed via each weft guide nozzle between the weft length measurement storage device corresponding to each weft thread and the main weft insertion nozzle. A weft guide device in the jet room that can be changed and adjusted. 2. The weft guiding nozzle is installed on a support leg that is fitted and supported in a cylindrical support member so as to be movable up and down, and the support leg is movable left and right and rotatable on a support plate that is movable back and forth in the weft insertion direction. A weft guide device in a jet loom according to claim 1, which is movably mounted.