JPS58197339A - Treatment of mistake yarn in jet 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 The present invention relates to a shuttleless loom, and more particularly, to (2) a method for treating missed yarns in an jet loom or a water jet loom.

! In order to achieve transparency in J weaving work, air jet looms and water jet looms are used to insert the measured threads into the shed formed between the upper warp threads using a jet nozzle. . At such speed,
Since the weaving speed is high, the impact on productivity reduction due to stopping of the loom is more significant than in the conventional *m. Therefore, it is desirable that the stop time in the jet room be as short as possible.

On the other hand, jet looms differ from conventional frame looms in that they do not use a shuttle, but move the weft threads with a fluid such as air or water. Mistakes are likely to occur. 1. Weft yarn is not supplied from the Jenn nozzle, so-called.

A weft supply error may occur, or a so-called conveyance error may occur, in which the weft is supplied from a jet nozzle but does not reach the selvage yarn opposite the jet nozzle.

In addition, in a jet loom operating at ^ speed, in order to prevent parts of the fN loom from being destroyed due to excessive deceleration, even if the loom is stopped due to a loading error, The timing is selected so that after detecting a mistake in input, one machine stops after approximately one cycle of inertial operation.

Therefore, (-1) due to the weft insertion error signal, the
If the weft insertion error occurs, the next wefting cycle will be performed before the machine stops. Therefore, the machine will be reversed and only the shifted weft yarns will be removed. , After that gutter mistake →Jikuru smell CLltI^,
It is also necessary to remove the weft threads that have been removed. However, the weft inserted immediately after a weft insertion error is beaten like a normal weft and is firmly held in the woven fabric. .Moreover,
During the above-mentioned reversal, in order to repair the weft insertion error and restart the ms, it is necessary to reverse the machine by operating each part of the machine in a complicated order of operations, which requires a great deal of skill. ing,
6F, warp threads (including selvage threads) are cut during weaving process 1,
t = S1 The switch of W machine is turned off by human operation tl
L: 431, for the same reason as mentioned above.
One machine operates for about one cycle due to inertia and then stops. ,
In order to prevent defects such as rod steps from occurring at 11m,
If it is attempted to remove the weft inserted during this inertial movement, it is not easy to remove it for the same reasons as mentioned above.

The present invention makes it easy to repair the jet loom in the event of a mistake in weft insertion, warp thread breakage, or stoppage due to manual operation (and does not require any skill). , broken warp threads, etc.).

The present invention achieves this objective by detecting an abnormal stop signal of the loom in a jet loom where measured weft yarns are tied into a shed formed between upper and lower warp yarns by a jet nozzle.
It is possible to brake the machine while preventing weft insertion in the dark until the machine stops, and then process the error yarn that caused the abnormal stop signal to be sent without supplying the weft to the shed. This is achieved by the method of handling mis-threads in the loom by reversing the Wa stand.

If the abnormal stop signal is a weft insertion error 41 signal, the machine is reversed to the open state where the weft that was inserted at the time of the generation of the error insertion signal can be removed, and the weft that was inserted incorrectly is removed. IJ7 prefers to take care of it later.

If the abnormal stop signal is a signal due to warp thread breakage, the machine in the closed state immediately before the weft insertion stop state is reversed and the machine is restarted after tying the warp, or the machine is restarted after tying the warp. It is preferable to restart the machine after the machine is reversed to the closed state immediately before the weft insertion stop state. .

The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a side view showing an outline of a single dynamic system of an air jet loom according to the present invention, in which a drive motor 11 is connected to a crankshaft 15 via a transmission member such as a V-belt 13, similar to a conventionally known device. Power is transmitted. The crankshaft 15 is connected to the gearbox 11117 via the transmission 1'C\Hoonbeam1
9 is driven to let out the warp threads 21, and the surface roller 31 frictionally drives the take-up roller 32 to take up the woven fabric 33. The speed change ratio Ifs17 is adjusted according to the displacement of the tension roller 23, and the back roller 2
2, the tension of the warp yarns unreeled is set to a predetermined value. The crankshaft 15 further moves the heald frame 24 downward F, and the warp 2
1 to perform the required 'R [1 movement, and the locking seat 71 and the thread saw on the second]; the reed 25 and the gutter put on the thread 27 supported by 7 through '28 are the id 26
507Wl and the fractured position, and the divine ceremony [Shishide/J? It is also designed to beat the thread with a reed. The above configuration is similar to the conventional J-/7 jet 1~room.

Next, the yanagi inserting mechanism will be explained with reference to Fig. 2.
The weft yarn 44 is unwound by the tensor 42 from C foot [1-ra 43, and stored in the pool pie 146 by the T anosle 45. Length measuring drum 501; is linked to the crankshaft 15 (FIG. 1), and
Feet [1-343] are driven by drops WI, and in accordance with the rotation of the crankshaft 15 (Fig. 1),
4 is the feed (1-La 43 has a length of 19 holes.

17 nozzle 45. Pool pipe 46 is (
f) - side L" - axis direction vertical) and C with 4?,
The weft yarn 44 stored in the gourd pie 746 can be taken out through the slit 47. 0 Oh, To; Ho no No (-1-
'Length measurement storage 11 (combined with a pipe and a pool pipe)
7) Alternative eaves, such as those disclosed in JP-A-57-16946 and JP-A-56-8028, in which weft threads are tied around the circumference of the length-measuring drum to prevent unwinding from the length-measuring drum. a
A length measurement storage mechanism may also be used.

l-le pipe 46 and main air jet nozzle 49
A gripper 48 is provided in between to unify the supply of the weft yarn 44 from the pool pipe 46 to the main air jet nozzle 49. The main air jet nozzle 4911 injects compressed air in synchronization with the rotation of the crankshaft 15 (Fig. 1), feeds the weft 44 formed in the upper and lower warps 211WI to the T-shed, and then feeds the weft 44 into the reed 1r by Wt25. Radar.

1"l) is the same as the conventional air jet loom. Furthermore, in the embodiment of the present invention, the section 44 is reliably inserted in the vicinity of the selvage yarn opposite the main air jet nozzle 49. Detectors 51, 52 of an appropriate type such as a photoelectric type, mechanical type, or fluid type are provided to detect whether or not the weft yarn 44 is released from the main air jet nozzle 49 according to the R method described in Japanese Patent Publication No. 54-21475M. Detect that the supply is reliable.

Also, there is a T between the main air jet nozzle 49 and the selvage thread.
A zero-type suction nozzle 61 is provided, and an appropriate reciprocating member 62 such as an air cylinder or a solenoid is connected to the suction nozzle 61.
), l L, and a guide plate 63 is movable between positions in the weft and weft path F outside the path of the weft indexed from the main 1° jet nozzle 49. Reference numeral 64 indicates a cutter for cutting the thread attached near the tip of the main air jet nozzle 49, and reference numeral 65 indicates a pulse 7 for controlling the jetting of air into the succinct nozzle 61.

Additionally, an auxiliary gripper 12 is provided between the main air jet nozzle 49 and the gripper 48, and is opened and closed by an electromagnetic solenoid 11 or an agitation ring (not shown). 13 is a photoelectric type, mechanical type, or fluid type feeler C;

The feed 1-1-ra 43 described above is rotatably mounted on the tip of an arm 83 rotatably supported around the bin 81 (-
Supported. The arm 83 is in the shape of a square, and a spring 85 is stretched on the end opposite to the support end of the feed roller 43, and the arm is always attached to the tip of the armature core of the air syringe 86 or magnetic solenoid. 8
3 so that they come into contact. Accordingly (, spring 85
Due to the action of the air cylinder 86, the feed roller 43 is pressed against the length measuring drum 5o and Il! ! The length measuring drum 5 is in a driven state and is separated from the length measuring drum 5o.
It is possible to take a state in which it is not driven by o. Reference numeral 87 denotes a brake shoe for moving 1113 in frictional contact with the feed roller 43 that has been separated from the length measuring drum 5o.

Next, with reference to FIG. 13 and FIG. 4, the mistake thread 1B of the present invention
A first example of the method will be described.

111!4 As shown in Figure (a), the heald frame 24 is moved to open and the weft threads 44 are inserted into the sheds formed in the upper and lower warp threads 21711. That is, as shown in FIG. 4(b), the weft 44 unwound from the weft 41 through the tensor 42 is measured by the measuring drum 5o, which rotates in accordance with the rotation of the crankshaft 15 (FIG. 1). *Fusuma length measured by driven feed roller 43, J7/': f, le 4
5 (Fig. 142), the liquid is stored in the pool pipe 46. Boul vibe 46 and main horse mackerel □, tonosuru 49
The operation of the gripper 48 and main air jet nozzle 49 provided between the main air jet nozzle 49 and the main air jet nozzle 49 are controlled in synchronization with the rotation of the crank shirt 1-15 (Fig. 1111), and the compressed air injected from the main air jet nozzle 49 causes The weft yarn 44 stored in the pool pipe 46 is put into a shed formed between the upper and lower warp yarns 21.

Detectors 51 and 52 installed near the selvedge threads opposite to the main air jet nozzle 49 detect when the warp threads 21 are almost closed (
Check the weft insertion condition at a crank angle of 250 to 300 degrees.If for some reason the weft yarn inserted into the shed reaches the selvage yarn on the opposite side of the main air jet nozzle 49.
When a so-called tying error (in Fig. 4, the weft thread 44 is indicated by a circle, and the weft threads that have been erroneously inserted are marked with an X) occurs, the detectors 51 and 52 detect the weft tying error. A miss signal is issued (see Figure 4 (C) and (d) 11). The motor 11 (Fig. 1) that drives the machine base is operated by this whip insertion error signal. Also, when the weft insertion error signal is transmitted, the piston of the reciprocating member 62 is activated as shown in Fig. 4 ([). A guide that has sprouted and is concentrated at the tip of C suction nozzle 61?
Cross 1iil'i3 with the weft path. In this way, the weft yarn indexed from the main air jet nozzle 49 after a misplacement is sucked into the suction/slew 61,
tl), the weft yarn is prevented from being inserted into the shed.In addition, from FIG. 4(e) onwards, the weft yarn whose weft insertion is prevented is shown by a broken half circle.

After the machine, which was operating inertia, moved for about one cycle, the warp threads 21 were almost opened, as shown in Figure 4 (Q)! ! !
(Crank angle: 300r!l) Stop.

Next, prepare for a reversal. That is, the main air jet nozzle 49 is rendered inoperative. Close the gripper 48 or use the electromagnetic solenoid 71 to close the gripper 72.
Close. Further, the air cylinder 86 is operated to pull the foot roller 43 from the length measuring drum 1150, and the U weft inserting and supplying mechanism is made inoperative. On the other hand, the piston of the reciprocating member 62 is moved back and the guide plate 63 at the tip of the suction nozzle 61
from the weft passage (see Figure 144 (h)). In this state, the drive motor 11 (FIG. 1) can be directly reversed, or the drive motor 11,! : Separately installed auxiliary motor (
(not shown), rotate the machine approximately 480 degrees, and
As shown in FIG. 1, the warp threads 21 are opened (crank angle approximately 180 degrees).

In this frontage state, by manually removing the weft yarn 44 that has been inserted incorrectly, and then turning on the switch,
Or, by automatically removing the weft threads that have been inserted incorrectly by a machine and turning on the switch (see Fig. 4 (J)*),
As shown in FIG. 4(k), the machine base is reversed approximately 270 degrees until the warp threads 21 are closed (crank angle approximately 210 degrees), which is appropriate for starting the air jet loom. Here, setting the crank angle to about 270 degrees means that the machine is returned a little more than the crank angle of 300 degrees when -1 is stopped due to the weft error signal. By doing this, a somewhat longer weft than usual is supplied at the time of restart, and weft insertion is ensured, so that the restart of the machine is performed smoothly.

In this state, the preparations necessary for startup are automatically performed. That is, the end of the weft being sucked into the suction nozzle 61 is cut by the weft cutting cutter 64 attached to the tip of the suction nozzle 61. The main air jet nozzle 49 is activated. The electromagnetic solenoid 71 is de-energized to open the auxiliary gripper 72, while the gripper 4
8 also lies in saying that it is in a steady operating state. Further, the piston of the air cylinder 86 is moved back to press C1 and the feed roller 43 against the circumferential surface of the length measuring drum 50, thereby putting the weft supply mechanism into operation. In this state rT air jet room operation is restarted (see FIGS. 4(s) and (n)).

As described above, according to the present invention, when a weft insertion error is detected, weft insertion is prevented until the machine stops, and then the machine is reversed until the weft insertion error can be taken out. are doing. Therefore, it is only necessary to remove the weft yarn that has been inserted incorrectly, making the work easy and quick. The machine can be restarted after a very short stop, and the air jet loom can be removed due to a weft insertion error. Productivity hardly decreases.

In addition, it is only necessary to remove the weft thread that was mis-inserted, and compared to the conventional method where at least two weft threads (the weft thread that was mis-inserted and the weft thread that was weft-inserted in the subsequent cycle) are removed individually, Automation of yarn processing becomes significantly easier.

In the above-mentioned embodiment, the suction nozzle detours the weft yarn from its normal path to prevent it from entering the weft yarn, and also to stop the supply of the weft yarn when the machine is reversed. The method can be implemented.

Another embodiment will be described with reference to FIGS. 5 and 6.

In this embodiment, after the weft insertion error signal is sent, the machine is braked and temporarily stopped while preventing weft insertion, and then the machine is reversed to a state where it is possible to remove the missed weft thread. Same as 4. In this example, after removing the weft yarn that was misplaced, and before restarting the machine,
1 using the weft that was sucked into the Sakushi 3 nozzle and bypassed.
(This is politely referred to as ``one shot clean'') and then restarted. That is, the steps from (a) to (J) in FIG. 6 are the steps from (a) to (J) in FIG.
This is the same as step j). Figure 6(k) and (
As shown in 1), when the weft is pulled out due to mis-insertion, the electromagnetic solenoid 11 remains energized, the auxiliary gripper continues to close, and the collar 48 of the grip 11 also continues to close. In this state, the air injection timing of the main air jet nozzle 49 and the auxiliary nozzle is controlled by a solenoid valve (not shown), and the air is stored in the air jet nozzle 61 at a timing different from that during normal operation. Insert the weft for one pick into the shed at low speed (Fig. 6 (III))
and (n)). The auxiliary nozzle may be formed integrally with the slip-on guide or may be formed separately.

In this state, the preparations necessary for startup are automatically performed. That is, the electromagnetic solenoid 71 is de-energized and the auxiliary gripper 72 is opened at 7, while the gripper 48 is also kept in a normally operating state. Further, the piston of the air cylinder 86 is deactivated to press the feed 0-543 against the circumferential surface of the length measuring dowel A50 to bring the weft supply ** into the operating state. In this state, tFIf of the air jet room is restarted (see FIGS. 6(q) and (r)).

In the first embodiment described above, since the weft has not been inserted after the weft thread that was mis-inserted is removed, the machine is further reversed so that it can be started, but in this embodiment, the weft thread that was incorrectly inserted is removed. After the weft is pulled out, the weft is inserted by one-shot weft insertion, so the machine is rotated forward (approximately 90 degrees) rather than in the reverse direction, and the machine is temporarily stopped at a crank angle of approximately 210 degrees, where the gripper 48, The Flixicon roller 43 and the like are restarted as shown in FIG. 6(0), and then the machine is automatically restarted and enters steady operation (see FIG. 6(Q) and ('')).

According to this embodiment, in addition to the effects of the above-mentioned first embodiment, the weft is inserted in advance prior to normal operation, and furthermore, when restarted, the weft end is cut by the cutter C used in normal operation. Therefore, the length of the weft thread protruding from the main air jet nozzle 49 becomes appropriate, and this has the effect of reducing troubles during restart. be done.

The second embodiment C described in 1 has a suction storage L7 in the suction nozzle.
One-shot weft insertion is carried out using the weft yarn that was previously used, but all the weft yarns after the Korean insertion mistake are sucked into the No. You may do so. In this case, for example, 11
An auxiliary motor is connected to the r weft insertion length measuring mechanism via the m clutch, and the weft length measuring mechanism is operated independently from other members of the machine base when measuring the length of the weft for 1st weft insertion, unlike during normal operation. Avoid activation.

In the above explanation, an example of a weft thread having been inserted incorrectly has been explained, but the present invention is also applicable to cases where the air jet truss 11 stops due to warp thread breakage, l thread breakage, or human operation. An example thereof is shown in FIG. In this case,
The steps up to the preparation for reverse rotation are the same as in the first embodiment shown in FIG. Next, warp thread cutting tl 1. In order to be able to tie the warp threads, the machine is moved to the closed state (just before the weft insertion t1 stop state).
Crank angle: approx. 210 degrees) to approx. 390 degrees at crank angle
fi reverse. In this state, the warp threads are tied, the switch is turned on L, and the start fFI and restart are performed as in the first embodiment. In addition, a reversal preparation letter! l! Since the warp threads of I'c are closed, the above-mentioned reversal for tying the shuttle threads is performed.

Alternatively, the thread may be tied, the vIIllP inserted and the valve reversed to the closed state immediately before the stop-like tube, and then the startup preparation and restart may be performed sequentially.

Furthermore, when repairing a warp thread breakage, the thread is reversed to the closed state (crank angle approximately 210 degrees) just before the tying stop state and the thread is tied.
After making a normal rotation of about 270 degrees at the crank angle, the weft yarn that was prevented from weft insertion was brought into the open state where it should have been inserted.
The procedure is the same as the one-shot E-weft insertion of the second embodiment shown in FIG. In addition, if the yarn was tied before reversing 5, the crank angle should be reversed by about 120 degrees after the yarn tying, and the weft yarn that was prevented from being inserted should be inserted.
1 of the second embodiment shown in FIG. 5]
Follow the same procedure as inserting the cut.

[Brief explanation of the drawings] Figure 1 shows the drive system of the air jet room according to the present invention.
A side view showing the main points, Figure 2 is a schematic plan view of the insert mechanism,
FIG. 3 shows 70 chips 1 of the first embodiment of the present invention. - Figure 4 is a schematic diagram showing the operation of the first embodiment, (a),
(C), (e), (a), (i>, (k), and (
tn) is a side view, (b), +d), (f), (h),
(j), (1), and (Y)) are plan views, FIG. 5 is a second embodiment of the present invention q) V11-char i~, and FIG. 6 is a schematic diagram showing the operation of the second embodiment. (a), (
C-n, (e-n, (su), (1), (k), CIII)
, (0), and (Q) are side views, (b), (d),
(f), (11), (j), (1), (n), kp
), and (rj is a plan view, FIG. 7 is a [1-chart of the second embodiment of the present invention). 11... Drive motor, 15... Crank shirt]~, 24... Heddle RFP, 25... Reed,
2 totes, willow inserting guide, 43...feed roller,
44...Weft, 46...Pool vizo, 4B...Gripper, 50...Length measuring drive l\
, 49...Main air jet nozzle, 51.52=
8. Detector, 61...Sakushi 3-in nozzle, 62
...Reciprocating member, 6310. Information board, 830.
6 arm, 85... spring, 86...
...F Cylinda, 81...Braya Cylinder l-0 Patent Applicant Co., Ltd.? I II Tajishi Ori I II Tokusakusho Patent Attorney Sankujin Patent Attorney Tamaka Fuji Figure 4 (9) Figure 4 (k) <l> Figure 6 (o) (p) Figure 6 (q) ) (r) Procedural amendment story (method) % formula % ) Patent 1t(1)2 filed on May 11, 1980, title of invention Method for disposing of incorrect yarn in jet loom 3, relationship with the case of the person making the amendment Patent applicant name (321) Toyota Industries Corporation Seisakusho 4, agent address 2-3-7 Taito, Taito-ku, Tokyo Figure 110
Section 6. Contents of amendment: Engraving of drawings (no change in content) 7. Attached list of items

Claims (1)

[Claims] 1. When an abnormal stop F signal of the loom is detected in the jet loom where the measured weft is tightened into the shed formed in the F lower shuttle yarn bar by a jet nozzle, the loom stops. Until the weft insertion is stopped and the nine machines are braked, the weft yarn is not fed to the shed until it is possible to process the erroneous yarn that caused the abnormal stop signal to be sent. A method for handling mis-threads in a ji-ry-i room, which is characterized by reversing the machine. 2. The method for disposing of erroneous yarns according to claim 1, wherein the weft yarn is detoured from a normal path to prevent the weft yarn from being inserted at least during the period from when the abnormality stop signal is detected until the machine is started. 3. Misthread processing I according to claim 2, in which the weft thread is detoured between the jet nozzle and the jet nozzle side selvage thread! h method. 4. Between the jet nozzle and the jet nozzle side selvage yarn, the weft yarn is sucked and deviated from the normal path.Claim No. 311&! How to deal with mistakes in thread 1 and route 11 listed above. 5. The above-mentioned duck constant stop signal is a signal due to a weft insertion error,
The misplaced yarn in the jet loom according to any one of claims 1 to 4, wherein the machine is reversed to an open state in which the inserted weft can be removed when the weft insertion error signal is issued. Q! 'lSawa method. 6. Any one of claims 1 to 4, wherein the abnormal stop signal is generated due to a warp breakage, and the machine is reversed to a closed state immediately before the weft insertion stop state.
How to deal with mistakes in Ji I Sotruu 11 described in Section 1.