JPS61167053A - 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] [Field of Industrial Application] The present invention relates to a weft insertion device in a fluid jet loom such as an air jet loom or a water jet loom.
More specifically, the present invention relates to a mixing or multi-color weft insertion device for a fluid jet loom, which is capable of introducing a plurality of weft yarns into one main nozzle.

[Prior Art] Conventional mixing or multi-color weft inserting devices for fluid jet m-machines include the following.

Japanese Unexamined Patent Publication No. 50-148663 and Utility Model Application No. 59-839
Japanese Patent Application No. 89 discloses a fixed type in which a plurality of main nozzles are fixedly installed on a fixed plate or sleigh with the relative positions kept constant, and the weft is inserted from a predetermined main nozzle based on a weft selection program.

In this fixed type, the main nozzle is not moved depending on the selection of the weft, so from this point of view it is suitable for increasing speed. However, in this fixed type, the positional relationship between the main nozzle and the guide hole of the weft guide member or the weft guide hole of the reed having the weft guide section changes depending on which main nozzle inserts the weft. However, it is therefore difficult to maintain a stable weft insertion state at all times regardless of the selected weft position, and this poses a problem that increases in speed are restricted.

Japanese Utility Model Publication No. 59-169379 discloses that a plurality of main nozzles are integrally provided so as to be rotatable relative to the sled, and the plurality of main nozzles are rotated based on a weft selection program.
A movable type is disclosed in which a predetermined main nozzle is selectively set at a weft insertion position.

With this movable type, the positional relationship between the main nozzle and the weft guide member or the guide hole of the reed having the weft guide section does not change, and therefore, a stable weft insertion state can be maintained at all times regardless of which weft thread is selected. . However, in this movable type, multiple main nozzles are rotated as a unit, so the mass of the movable part is large, and the inertia is large because the main nozzle, which has a large mass, can be moved. Therefore, it is difficult to position the main nozzle at the proper position. . Furthermore, even if it were possible to position the weft in the correct position, the position of the main nozzle would have to be changed in a short time according to the selected program, which would prevent a large proportion of the weft insertion time during one rotation of the crankshaft, which would be disadvantageous for increasing speed. It is.

Japanese Patent Publication No. 51-24609 discloses a weft insertion device for a fluid jet loom, which introduces a plurality of weft yarns into one main nozzle.

According to the device disclosed in Japanese Patent Publication No. 51-24609, the device disclosed in Japanese Patent Publication No. 50-148663 and
Unlike the fixed type disclosed in Publication No. -83989 etc.,
l from one main nozzle! □Since the yarn is inserted into the weft, the positional relationship between the main nozzle and the weft guide member or the guide hole of the reed having the weft guide section does not change, and therefore, the weft insertion state is always stable regardless of the selected weft position. can be maintained.

Furthermore, according to the device disclosed in Japanese Patent Publication No. 51-24609, the main nozzle is fixed compared to the movable type disclosed in Japanese Utility Model Publication No. 59-169379, etc., and the problem of inertia is also major. There is no problem with positioning the nozzle at the proper position, and there is no time constraint on replacing the main nozzle.

[Problem that the invention seeks to solve]

However, in the weft insertion device disclosed in Japanese Patent Publication No. 51-24609, since a plurality of weft yarns are passed through one main nozzle, the weft yarns become entangled with each other in the main nozzle, stably performing the weft insertion function. In addition, in order to pull back unselected weft yarns to the entrance side of the main nozzle in order to eliminate entanglement between weft yarns, it is necessary to increase the amount of pullback, and a large pullback takes time and increases speed. The problem is that it is not possible to respond to

Therefore, even though a plurality of weft yarns are passed through one main nozzle, the present invention can stably perform the weft insertion function by eliminating the entanglement of the weft yarns within the main nozzle.
Another object of the present invention is to provide a mixing or multi-color weft inserting device for a fluid jet loom that does not require pulling back unselected weft yarns to the entrance side of a main nozzle and can increase speed.

Means for Solving Problem C) In the present invention, in a weft insertion device for a fluid jet loom that is capable of introducing a plurality of weft yarns into one main nozzle, a weft insertion device is provided at the outlet of an acceleration tube of the main nozzle. The above object is achieved by a weft insertion device in a fluid jet loom, which is provided with a weft separation member for separating weft yarns into which the wefts are inserted and weft yarns which are not inserted.

[Effect]

In the present invention, since the weft is inserted through one main nozzle, the positional relationship between the main nozzle and the weft guide member or the guide hole of the reed having the weft guide section does not change. A stable weft insertion state can be maintained at all times regardless of the position.

Moreover, in the present invention, a weft dividing member is provided at the outlet of the main nozzle to separate the weft yarns to be inserted and the weft yarns not to be inserted, so that even though a plurality of weft yarns are passed through one main nozzle, First, entanglement of the weft yarns in the main nozzle is eliminated, making it unnecessary to pull back the weft yarns that are not inserted.

Further, in the present invention, the main nozzle does not move when selecting the weft yarns as in the fixed type, but only moves a small-mass dividing member provided separately from the main nozzle to the outlet of the main nozzle. A sorting member with a small quality m has a small inertia, and therefore it is easy to position the sorting member at an appropriate position, and the weft can be sorted in a short time according to the selection program, making it suitable for increasing the speed of the loom.

The dividing member has a small gap in the yarn path direction on the exit side of the accelerating tube and is movable in a direction intersecting the weft yarn path, so that the weft yarn that is not inserted into the weft can be moved between the accelerating tube and the dividing member. Preferably, it is configured to nip. In this case, it is preferable that the dividing member has a number of stitches corresponding to the number of weft yarns to be introduced into the main nozzle. Further, it is preferable that the small gap in the yarn path direction between the dividing member and the exit side of the accelerating tube be adjustable so that the small gap can be changed depending on the weft count and material.

〔Example〕

Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

No. iF! 1 is a sectional view of a first embodiment of the present invention.

The main nozzle 2o of this embodiment is fixedly installed on a sleigh (not shown) that swings in time with the crankshaft of the machine base, but the main nozzle of the present invention is fixedly installed on the machine base. Good too. The main nozzle 20 includes a main nozzle body 1, an acceleration tube 2, and a yarn guide tube 3 whose central axes are aligned in a straight line.
Consisting of

i.e. in the main nozzle with a conical hole.”
An acceleration tube 2 having a hollow hole communicating with the conical hole of the main nozzle body 1 is integrally formed at the tip of the D 1, or the acceleration tube 2 is screwed together, or l1ll! worn and assembled in one piece.

A hollow thread guide tube 3 having a truncated conical tip is screwed and fixed to the rear end of the main nozzle body 1. An air passage 1a is bored in the wall surface of the main nozzle body 1, and the air supplied from the air passage 1a flows through the conical hole between the conical hole of the main nozzle body 1 and the conical tip of the thread guide tube 3. The weft yarn 7.8 passing through the gap 6, passing through the hole in the accelerating tube 2, and being supplied from the guide hole 3a of the yarn guide tube 3 is sucked and jetted to remove the terror formed between the warp yarns (not shown). Insert the weft.

A weft dividing member 4 for separating the weft yarn 8 to be inserted into the weft yarn 7 and the weft yarn 7 not to be inserted is provided at the outlet of the acceleration tube 2 of the main nozzle. The partitioning member 4 has holes 4a and 4b having the same diameter or a slightly larger diameter than the hole in the acceleration tube 2 as a partition 4.
The number of holes is 20 through the main nozzle.
This corresponds to the maximum number of weft yarns to be introduced. Division member 4
is provided with a small gap from the exit side end surface 2a of the acceleration tube 2. A suitable reciprocating member such as an electromagnetic solenoid 5 is connected to the dividing member 4, and is movable in a direction intersecting the weft path (vertical direction in FIG. 1) according to a weft selection program.

When inserting the weft yarn 8, the electromagnetic solenoid 5 is operated to move the dividing member 4 downward across the yarn path, and the partition 4C of the dividing member 4 and the exit side end surface 2a of the accelerating tube 2 are connected. The tip 7a of the weft yarn 7 that is not to be inserted is nipped in the small gap between the two, and the weft yarn 8 to be inserted is passed through the eye 4a of the dividing member 4 from the main nozzle 20 and inserted. Next, when inserting the weft yarn 7, the weft yarn 8 is cut by a known cutter provided at the edge of the weft-inserted non-woven fabric, and then the electromagnetic solenoid 5 moves the dividing member 4 upward. The tip of the weft yarn 8 that is not to be inserted is nipped in the small gap between the partition 4c and the exit side end surface 2a of the accelerating tube 2, and the weft yarn 7 to be inserted is inserted.
The weft is inserted from the main nozzle 20 through the eye 4b of the dividing member 4.

In the present invention, a small-mass dividing member 4 is provided separately from the main nozzle 20 at the outlet of the main nozzle 20 to separate weft yarns to be inserted into weft yarns and weft yarns not to be inserted. Even though a plurality of weft threads are passed through the main nozzle 20, entanglement of the weft threads within the main nozzle 20 can be eliminated. Since there is no entanglement between the weft yarns, there is no need to pull back the weft yarns that are not inserted.

In the embodiment shown in FIG. 2, the electromagnetic solenoid 5 is fixed by a bolt 22 to a sley or a bracket 21 attached to the sley. The sley or bracket 21 has an elongated hole formed therein, and is moved along the thread path of the Ilal misolenoid weft along the elongated hole, and is fixed at an appropriate position with a bolt 22. Thereby, the small gap in the yarn path direction between the dividing member 4 and the wall surface on the exit side of the accelerating tube 2 can be adjusted, and the small gap can be changed depending on the weft count and material.

Furthermore, in this embodiment, a yarn guide 9 having openings 9a and 9b corresponding to the maximum number of weft yarns to be introduced into the main nozzle 20 is attached to the yarn guide tube 3, and the weft yarns 7 are inserted into the yarn guide tube 3 before entering the yarn guide tube 3. Since the .8 is divided, entanglement within the main nozzle 20 is further reduced.

Furthermore, in the embodiment shown in FIG. 3, a yarn guide 10 is provided at the entrance of the yarn guide tube 3, and the yarn guide 10 has an opening corresponding to the maximum number of wefts to be introduced into the main nozzle 20. 10a, 10b are formed and connected to an electromagnetic solenoid 11, which is moved in a direction intersecting the yarn path in synchronization with an electromagnetic solenoid 5 connected to the dividing member 4. Since the weft yarns 7.8 are separated before and after the yarn guide tube 3, the weft yarns 7.8 are not entangled within the main nozzle 20.

In the above embodiment, yarn guide-like eyes 4a and 4b are formed in the dividing member 4, so that the weft thread passed through one eye does not interfere with the insertion of the weft thread passed through the other eye, which is preferable. It is something. However, the dividing member 4 only needs to be able to separate the weft yarns to be inserted and the weft yarns not to be inserted, and does not necessarily have eyes. It may also be possible to move it.

Furthermore, a short tubular weft gripping member having appropriate wear resistance and yarn gripping properties may be detachably attached to the tip of the acceleration tube 2 of the main nozzle 20. Depending on the count, type, weft insertion conditions, etc., the shape (for example, roundness of the end surface), material, etc. of the gripping member that cooperates with the dividing member to divide the weft can be optimized.

When the number of weft yarns increases to three or more, as shown in FIG. The electromagnetic solenoid 5 can be connected to each of the
As shown in the figure, a gear 16 having teeth 16a is attached to the output shaft of an electric or pneumatic motor capable of forward and reverse rotation, and
, 14b, 14c, 14d.
By meshing the gear 16 with the sectional member, the moving distance of the dividing member can be shortened, which is suitable for increasing the speed.

Furthermore, as shown in FIG. 6, the wire is made into a circle and divided into a plurality of spaces by a bar passing through the center thereof to form a lightweight division member 24, and a push-pull type electromagnetic solenoid is installed in the division member. 5 can be pivotally mounted to further increase the speed.

〔Effect of the invention〕

According to the present invention, since the weft yarns are divided at the outlet of the main nozzle by the dividing member, there is no entanglement between the weft yarns. Further, according to the present invention, since the movable part for weft selection (color change) is small and only the dividing member, the response performance is good and it is possible to cope with high speed rotation of the loom. Since the main nozzle has only one accelerating tube, the positional relationship with the weft guide or reed will not shift regardless of the selected weft, and weft insertion can be performed reliably.

[Brief explanation of the drawing]

1 to 3 are cross-sectional side views of different embodiments of the present invention, and FIGS. 4 to 6 are front views of other embodiments, respectively. 1... Main nozzle body, 1a... Air passage, 2... Accelerator tube, 2a...
・Exit side end surface, 3... Thread guide pipe, 3a... Kite hole, 4.14.24... Division member, 5... Electromagnetic solenoid, 7.8... Weft, 20...
・Main nozzle.

Claims (1)

[Scope of Claims] 1. In a weft insertion device for a fluid jet loom that can introduce a plurality of weft yarns into one main nozzle, a weft yarn to be inserted into the outlet of an acceleration tube of the main nozzle, and a weft yarn that is not inserted into the main nozzle. 1. A weft insertion device for a fluid jet loom, characterized in that a weft dividing member is provided for separating the weft from the weft. 2. The dividing member has a small gap with respect to the exit side of the accelerating tube and is movable in a direction intersecting the weft path, and the weft is not inserted between the accelerating tube and the dividing member. A weft insertion device for a fluid jet loom according to claim 1, which nip weft yarns. 3. The fluid jet according to claim 1, wherein the dividing member is movable in the yarn path direction, and the size of the small gap between the dividing member and the outlet side of the acceleration tube can be adjusted. Weft inserting device for type looms. 4. The weft insertion device for a fluid jet loom according to claim 2 or 3, wherein the dividing member has a number of stitches corresponding to the number of wefts to be introduced into the main nozzle.