JPS5915542A - Wefting inhibiting apparatus of 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 weft insertion prevention device for a shuttleless loom, more particularly for an air jet l-loom or a water die l-loom.

In order to speed up the weaving process, an air dien loom or water jet loom is used in which the measured weft is inserted into a shed formed between the upper and lower warps using a jet nozzle. In high-speed looms,
Due to the high degree of production, the impact of stopping the loom on productivity decreases compared to conventional Ii! More significant than tJ. Therefore, in a jet room, it is desirable to know the stopping time as much as possible. On the other hand, in the diene 1-loom, unlike conventional shuttled looms, the weft threads are flown through the shed by a fluid such as air or water without using a shuttle, so there are errors in weft insertion compared to the shuttled 1fA11. is likely to occur. In other words, the weft yarn is not supplied from the jet nozzle, resulting in a so-called weft supply error, or the weft yarn is supplied from the jet nozzle but does not reach the selvage yarn on the opposite side of the jet nozzle.
So-called conveyance errors may occur.

In addition, in the die 1-room, which operates at high speed, even if the loom is stopped immediately after a weft insertion error is discovered, it is necessary to prevent parts of the loom from being damaged due to excessive deceleration. The timing is selected so that the machine stops when a weft insertion error is detected and after about one cycle of inertia operation.

Therefore, conventionally, when the jet loom is stopped due to a weft insertion error signal, the next weft insertion recycle is performed before the jet loom stops. Therefore, it is necessary to reverse the machine and remove not only the weft yarn where the weft insertion error occurred, but also the weft yarn that was inserted in the cycle after the weft insertion error. By the way, the weft inserted immediately after a tightening error is beaten like a normal weft and is firmly held in the woven fabric, so it cannot be easily removed and the removal work is extremely troublesome. Moreover, when reversing the weft as mentioned above, it is necessary to reverse the loom by operating each part of the loom according to complicated work procedures in order to repair the weft insertion error and restart weaving.
It requires a great deal of skill.

Also, warp threads (including selvedge threads) may be cut during weaving work,
When the loom is switched off by human operation,
For the same reason as mentioned above, the loom stops after operating for about one cycle due to inertia. In order to prevent defects such as steps in the woven fabric, weft and 5
If an attempt is made to remove the tangled weft yarn, it is not easy to remove it for the same reason as mentioned above.

The present applicant has developed a system that allows repair of jet looms caused by mistakes in weft insertion, warp thread breaks, or stops due to manual operation, etc., easily and without requiring any skill. As a processing method for weft yarns, broken warp yarns, etc., side-layered #R yarns are placed between the upper and lower warp yarns using a nozzle.

When a loom abnormality 1 stop signal is detected in the jet loom that feeds cotton into a shed that has been formed for 1 ton, the ffi machine is fully braked while preventing weft insertion until the loom h<stops.
Next, we proposed a method for processing mis-threads in which the machine is reversed to a jet loom until the weft can be processed without supplying the weft to the shed. did.

The present invention is the most effective method for carrying out the above-mentioned method for treating mis-threads.
The purpose is to provide a device that is easy to use. In the present invention, in a jet loom weft inserting device that presses the weft yarns into a shed formed between the upper and lower warp yarns by means of a pressure fluid injected from a jet nozzle, the tip of the suction port is located between the jet nozzle and the jet nozzle side and the weft yarn. A suction nozzle was installed so as to be located near the f9 yarn path between A blocking device achieves this objective.

The present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a side view showing an outline of the drive system of the airgen 1 and room according to the present invention, and as in the conventional device, the drive motor 11 is connected to the crank shirt 1 via a V-heald 13 through a transmission member. Power is transmitted to ~15. 15 to the crank shirt 1 is passed through the transmission 8117 to the yarn beam 19
is driven to unwind the warp threads 21, and a winding roller 32 is frictionally driven by the surface roller 31 to wind up the woven fabric 33. The above-mentioned speed change (number 17 is the tension roller 23
The gear ratio is adjusted in accordance with the displacement of the warp yarns, and the tension of the warp threads let out via the back roller 22 is set to a predetermined value. The crankshaft 15 moves the heald frame 24 up and down, causing the warp threads 21 to perform the required uniform movement. Further, the locking shaft 29 supports a sled 27 via a sled sword 28, and the sled 27 has a reed 25 and a weft insertion guide 26 attached thereto. Crankshaft 15 is rocking shirt 1
The reed 25 and the weft insertion guide 26 are moved between the solid line position and the broken line position via the reed 29, whereby the reed 25 beats the inserted weft. The above configuration is the same as a conventional air jet room.

Next, the weft insertion mechanism will be explained with reference to FIG.

From the data sheet 41 to the feed roller 43 via the data sheet 42
The weft yarn 44 is unwound and stored in the pool pipe 46 by the air nozzle 45. The vice-length drum 50 is linked to the crankshaft nozzle (Fig. 1), and
The feed roller 43 is driven by friction, and a predetermined length of weft 44 is measured by the feed roller 43 in response to the rotation of the crankshaft 15 (FIG. 1), and is fed to the nozzle 45. 46 has an axial sulin 1-41 on one side, and the pool pipe 4
The weft 44 stored in G can be taken out from the sling 1-47. Note that instead of the above-mentioned sub-length storage mechanism combining a feed roller and a pool pipe, for example, a length measuring drum on the circumferential surface disclosed in JP-A-57-16946 and JP-A-56-580213 is used. A sub-length storage m in which the weft is wound and the unwinding from the sub-length drum is controlled.
4M may also be used.

Pool pipe 46 and main air jet nozzle 49
A gripper 48 is provided in between to control the supply of the weft yarn 44 from the pool pipe 46 to the main air jet nozzle 49. The nozzle 49 injects compressed air to the main air jet 1 in synchronization with the rotation of the crank shirt 115 (Fig. 1), inserts the weft yarn 44 into the shed formed between the upper and lower warp yarns 21, and inserts the weft yarn into the shed formed between the upper and lower warp yarns 21. Hit the reed with the reed 25.

A detector 51 of an appropriate type such as a photoelectric type, a mechanical type, or a fluid type that detects whether or not the weft yarn 44 is reliably inserted near the selvage yarn on the opposite side of the main air die 1 to the nozzle 49.
．． 52 is installed (for example, the main air jet nozzle 49 according to the method described in Japanese Patent Publication No. 54-21475).
The sensor detects that the weft yarn 44 is being reliably supplied.

Next, a practical example of the weft insertion prevention device of the present invention will be explained. A suction nozzle 61 of a known ejector type that generates a suction force by the action of compressed air is installed between the main air jet nozzle 49 and the selvage thread. A suitable reciprocating member 52 such as a solenoid is connected (at 7), and the operation of the reciprocating member 62 causes the tip of the weft nozzle 61 to move to a position away from the path of the weft thread that is exited from the main air jet nozzle 49. It is possible to move between locations near the route.

A guide plate 63 is fixed to the tip of the suction nozzle 61.
When the leak nozzle 61 retreats, the guide plate 63 is out of the weft path, and when the leak nozzle 61 moves forward, the guide plate 6371 crosses the weft path. . Suction nozzle 6
A bellows-type expansion joint 66 is connected to the rear end of the suction nozzle 01 to allow smooth movement of the suction nozzle 01. Note that the suction nozzle 61 and the guide plate 63 integrally formed therewith are not limited to those that move in the front-back direction, but may be of a type that rotates in the vertical direction, for example.

A weft cutting cutter 64 faces the weft path from the main nozzle 49 to the suction nozzle 61. In other words, as shown in FIG. A fixed blade is fixedly supported on the bracket 40 by Y holes 39a and 39b, and a movable blade 35 is rotatably supported around the pin 391 by a pin 39b. This bottle 391] is Jets 1,
It is approximately parallel to the fine thread bond from the nozzle 49 to the suction nozzle 61, and is located closer to the jet no. 1 and nozzle 49 side than the weft path. The movable blade 35 consists of a blade part 35a and a tail part 35h, and the blade part 35a and tail part 35I] are L
integrally or integrally formed in the shape of a letter. Movable blade 3
Connect a connecting fitting 37 to the tail part 351 of the cylinder 5 with a pin 36, screw the screws 1 to 38a of the air cylinder 38 or the armature (not shown) of the electromagnetic solenoid to the connecting fitting 37, and It is fixed by Note that it is preferable that the relative positions of the main air dien 1 to the nozzle 49 and the weft cutting cutter 64 remain unchanged. Therefore, in the case of ``E'', the main air jet nozzle 49 is attached to the sleigh 27, so the kat thread cutting horn 64 is also attached to the sled 27 in one piece, but the main air jet 1 - nozzle 49 When attached to the machine frame, it is preferable that the cutter 64 for the m-thread cutting area is attached to the machine frame.

Referring again to FIG. 2, 65 beam/kushifun nozzle 61
This is a valve that restricts the ejection of airflow into the tank.

An auxiliary gripper 72 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 air cylinder (not shown). 73 is a photoelectric type, mechanical type, or fluid type feeler.

The feed roller 43 described above is rotatably supported at the tip of an arm 83 that is rotatably supported around the bin 81 . A spring 85 is stretched over the end of the arm 83 opposite to the supporting end of the feed roller 43, and biases the arm 83 so that it comes into contact with the piston of the air cylinder 8G or the tip of the armature of the electromagnetic solenoid during operation. .

Therefore, due to the action of the spring 85O and the air cylinder 8G, the feed roller 43 can be in a state where it is pressed against the length-measuring drum 50 and driven by friction, or a state where it is separated from the length-measuring drum 50 and is not driven by the length-measuring drum 50. can. 87 is a brake shoe which is separated from the sub-length drum 50 and comes into contact with the feed roller 43 for braking.

Next, the operation of the first embodiment of the cotton insertion closing device of the present invention will be explained. The heald frame 24 is moved to open, and the weft yarn 44 is inserted into the shed formed between the upper and lower warp yarns 21.

In other words! ! In Figure 2, the weft yarn 44 unwound through the tensioner 42 from the yarn 41 is connected to crank shirts 1 to 1.
After the length is measured by the feed roller 43 which rotates according to the rotation of the pipe 15 (FIG. 1), it is stored in the pool pipe 46 by the air nostle 45 (FIG. 2). pool pipe 4
The gripper 48 installed between the main air jet nozzle 49 and the main air jet nozzle 49 is operated and controlled in synchronization with the rotation of the crank shirt 115 (Fig. The compressed air jetted 04 inserts the weft yarn 44 stored in the pool pipe 46 into the shed formed between the upper and lower warp yarns 21.

Detectors 51 and 52 installed near the selvage threads on the opposite side of the main air jet nozzle 49 detect when the warp threads 21 are almost closed (
If the tightening condition is checked at a crank angle of 250 to 300 degrees, for some reason the weft inserted into the shed will not reach the selvedge yarn on the opposite side of the main air jet (nozzle 49), resulting in a weft insertion error. Then, the detectors 51 and 52 issue a weft insertion error signal.By this weft insertion error signal, the operation of the motor 11 (FIG. 1) that drives the machine is stopped and the machine enters inertial operation.

Furthermore, when a weft insertion error signal is transmitted, the reciprocating member 62
The screw 1 advances to cause the guide plate 63 fixed to the tip of the weft nozzle 61 to intersect with the weft path. In this way, after making a mistake in weft insertion, the main air engine 1 to nosuru 4 can be
The weft yarn ejected from the weft shaft 9 is guided by the guide plate 63 and reaches the suction nozzle 61, where it is sucked by the suction nozzle 61, thereby preventing the weft yarn from being inserted into the shed.

After one cycle of inertial operation, the machine stopped with the warp threads 21 almost closed (crank angle of about 300 degrees).

Next, prepare for a reversal. That is, the main air engine 1 to the nozzle 49 are rendered inoperable. Close the gripper 48 or close the auxiliary gripper 72 by the electromagnetic solenoid 71.
Close. Further, the air cylinder 8G is operated to pull the feed roller 43 away from the length measuring drum 50 N1, thereby disabling the weft supply mechanism. On the other hand, the screws 1 to 1 of the reciprocating member 62 are moved back, and the guide plate 63 at the tip of the suction nozzle 61 is
from the weft path. In this state, the drive motor 11 (Fig. 1) can be reversed directly, or an auxiliary motor (not shown) provided separately from the drive motor 11 can be operated to rotate the machine about 40 degrees.
By turning the warp 21 80 degrees, the warp threads 21 are placed in the open state (crank angle approximately 180 degrees).

In this open state, by manually removing the weft yarn 44 that was incorrectly inserted, and then turning the switch A,
Alternatively, the machine automatically removes the weft threads that have been incorrectly compressed and turns the switch so that the warp threads 21 are closed (1°, crank angle approximately 270 degrees) and the machine frame is approximately 2°.
Turn it around 10 degrees to make it suitable for starting the Air Jets I-Room.

In this state, the preparations necessary for startup are automatically performed. That is, the piston rod 38a of the air cylinder 38 is moved backward, and the movable blade 35 of the weft cutting cutter 64 is moved to the bin 391.
rotates around the fixed blade 34 and the movable blade 35,
As the weft tension increases, the weft is sandwiched between the two, and the end of the weft, which is sucked into the suction nozzle 61, is placed so as to face the spinning path from the main air jet nozzle 49 to the leakage nozzle 61. It is cut and covered by the weft cutting cutter 64. In this case, the length of the weft end protruding from the main air jet nozzle 49 is adjusted by adjusting the mounting position of the weft cutting cutter.

The main air jet nozzle 49 is then activated. 7 [tt The solenoid 71 is de-energized and the auxiliary gripper 12 is retracted, while the gripper 48 is also brought into a steady operating state. Further, the piston of the air cylinder 8G is moved backward to press the food troller 43 against the circumferential surface of the length measuring drum 50 to put the weft supply mechanism into operation. In this state, restart the operation of the air jet room.

As described above, according to the present invention, the weft can be sucked into the suction nozzle to prevent weft insertion until the machine stops when a weft insertion error is detected. Therefore, after that, it is only necessary to reverse the machine to a state where it is possible to remove the misplaced weft thread, and remove only the misplaced weft thread, making the work easy and quick. The machine can be restarted, and the productivity of the air jet loom will hardly decrease due to weft insertion errors.

In addition, when the machine is restarted, the weft suctioned by the suction nozzle can be reliably cut, and the length of the weft end protruding from the nozzle to the main air jet 1 after cutting can be made uniform. , you can restart the machine privately.

In particular, the main air jet nozzle 4 of the weft cutting cutter
If you adjust the relative mounting position with 9 and make the protruding weft length the same as the weft end length during normal operation, when restarting the machine, 11. Trouble can be resolved.

The above explanation is for a so-called conveyance error in which the weft is jetted from the main air jet nozzle but does not reach the ear on the opposite side of the main air jet nozzle. 1 [4j so-called (1
(If a feeding error occurs, the weft yarn is manually fed to the ritoji 1 nozzle, and then the tip of the weft yarn is sucked into the rectification nozzle to complete the procedure C that was repeated on the I-JIG. That's fine.

Although the example of repairing a weft yarn that has been mis-inserted has been described above in σ-paragraph 11, the present invention can also be applied to cases where there is a red thread breakage, a crossing thread breakage, or an air jet loom caused by manual operation.

J, suction nozzle 6 in the first embodiment shown above
A guide plate 63 was fixed to the tip of the nozzle 1, and the guide plate 63 moved together with the four nozzles 61.

However, by forming the guide plate 67 separately from the single-piece nozzle 61, the suction nozzle 61 can be made lighter, and its mobility can be increased and the temperature can be reduced. In other words, main air engine 1
- Fix the guide plate to the tip of the screws 1-n of the air cylinder arranged in 34 directions on the weft nozzle 61 with the weft thread path from the nozzle 49, and move the screws 1-n of the air cylinder forward. The guide plate intersects with the weft path and directs the weft jetted from the main air jets 1 to nostle 49 to the suction nozzle 61, and the suction nozzle 61 sucks the weft yarn and prevents it from being inserted.

When the screws 1 to 1 of the air cylinder are retracted, the guiding plate moves away from the weft path, and the weft is inserted without being obstructed by the guiding plate. J5, →The knot nosle 61 may be fixedly installed, but by making it movable back and forth with a reciprocating member such as an air cylinder 62, or rotatable (not shown), it can be moved close to the weft path. This is more preferable because it can move forward to reliably suck the weft yarn, and at the same time can sufficiently retreat from the weft path so as not to interfere with the insertion of the weft yarn.

In the second embodiment shown in FIGS. 4 to 10, the guide plate 67
is rotatably supported around the bottle, and a piston 68a of the air cylinder 68 is connected to the guide plate 61, so that the guide plate 61 is rotated by raising and lowering the piston G8a of the air cylinder 68.

In this second embodiment, the structure of the weft cutting cutter 64 is also different from that of the first embodiment described above. Then, as shown in FIGS. 5 to 9, a cylindrical or rectangular cutter body 91 is attached to the slay 21 or the machine frame,
The fixed blade 34 is attached to a semi-cylindrical fixed and blade mounting member 93 fixed to the cutter body 91, and a semi-cylindrical movable blade mounting member (which can move) extends in the axial direction of the cutter body 91. The movable blade 35 is attached to the movable blade attachment member 92. The screw-in rod 3 of the air cylinder 38 is attached to the rear end of the movable blade attachment member 92.
8a or electric solenoid armature,
The air cylinder 38 or the 1141 solenoid allows the movable blade 92 to be moved while sliding on the fixed blade 35. In addition, a coil spring 94 is installed between the movable blade 35 and the air cylinder 38 or between the movable blade 35 and the air cylinder holding member to press the movable blade 35 against the fixed blade 34 with appropriate contact pressure. . The movable blade 35 is attached to the movable blade attachment member 92 at an acute angle as shown in FIGS. 5 and 6, and is connected to the main air jet 1 from the opposite side of the nozzle 49 across the weft path - It is preferable to move toward the nozzle 49 and to contact the fixed blade 35 in a layered manner. Thereby, the weft is held at the acute angle between the movable blade 35 and the movable blade attachment member 92, and as the movable blade 35 moves, the weft tension increases and the weft can be reliably cut.

In the embodiments described above, the rigid guide plate is movable between a position intersecting the weft path and a position away from the weft path. However, the guiding means of the present invention can also be a compressed air injection nozzle in addition to the above-mentioned guiding plate. Compressed air n, Fl (Iff nozzle (yo, suction nozzle 6
The suction nozzle 61 is aligned with the suction nozzle 61 on the axis of the weft thread 1, and is located opposite the suction nozzle 61 with the weft path at the center line. When compressed air is injected by the switching valve, the weft yarn in the weft path is pushed into the suction nozzle 61 facing the compressed air injection nozzle and is sucked into the suction nozzle 61, thereby preventing cotton insertion.

Note that the suction nozzle described above generates suction force by the ejector action of compressed air. However, the one-action nozzle of the present invention is not limited to one based on ejector action;
For example, a suction nozzle connected to a suction source to generate suction horns may be employed.

As described above, in the present invention, since the suction nozzle is installed so that the tip of the suction port of the suction nozzle can be located near the weft path, the weft yarn flying along the weft path is sucked into the suction nozzle. By doing so, it is possible to reliably prevent weft insertion when necessary.Furthermore, in the present invention, since the weft thread cutting cutter is placed in the weft thread path from die 1 to thread nozzle to thread 1 nozzle, weft insertion can be reliably prevented when necessary. The IC weft can be reliably cut by suction into the jet nozzle, and the length of the weft end protruding from the jet nozzle can be made uniform.

Therefore, the machine can be restarted smoothly. The device of the present invention is extremely simple in construction, easy to manufacture, and reliable in operation.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an outline of the drive system of the air jet loom according to the present invention, FIG. 2 is a schematic plan view of the first embodiment of the present invention, and FIG. 3 is a diagram of the weft cutting cutter shown in FIG. 2. Perspective view,
4 is a plan view of the second embodiment of the present invention, FIG. 5 is a perspective view of the weft cutting cutter shown in FIG. 4, FIG. 6 is a partial perspective view of FIG. 5, and FIG. 8 is a side view of FIG. 7, FIG. 9 is a front view of FIG. 8, and FIG. 10 is a view taken along the line X--X of FIG. 4. 11... Drive 11J motor, 15... Crank shirt 11.24... Heald frame, 25...
Reed, 26...Weft insertion guide, 34...Fixed blade,
3530. Movable blade, 43...Feed roller, 44 =0. Weft, 46...Pool pipe, 48, =-Gripper, 50...
・...11 long drum, 49... Main air jet nozzle, 51, 52... Detector, C1... 1 rotation nozzle, 62... Reciprocating member, 63...
- Guide plate, 64...Cutter for cutting the weft thread. Patent applicant Toyota Automobile HA tJ Manufacturing Co., Ltd. Patent application agent Eiji Sannaka

Claims (1)

[Scope of Claims] 1. In a diene 1-room weft insertion device in which the weft is inserted into a shed formed between the upper and lower warps by a pressure fluid jetted from a jet nozzle, the tip of the suction port is a jet. A suction nozzle is installed near the weft path between the nozzle and the jet nozzle to the nozzle side selvage yarn, and a cutter for cutting the weft is placed in the weft path from the jet nozzle to the weft nozzle. A weft insertion prevention device for dien 1 to looms. 2. The weft cutting cutter is composed of a fixed blade and a movable blade that can rotate around a spindle pin, and the support pin of the movable blade is approximately parallel to the weft path from the jet nozzle to the weft nozzle. In the cleaning prevention device 3 according to claim '1, the weft cutting cutter includes a fixed blade and a movable blade that can slide linearly with respect to the fixed blade, and the fixed blade is a jet. The movable blade is provided closer to the jet nozzle than the weft path from the nozzle to the suction nozzle; The weft insertion prevention device according to claim 1, wherein the movable blade is pressed against the fixed blade by a coil spring.