JPS58208440A - Wefting 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 inserting device for a shuttleless loom, more particularly for an air-diene one-loom or water-jet loom.

In order to speed up the weaving process, a jet nozzle is used to place the measured length of a single thread into the cicada opening formed between the upper and lower threads.
I! ? , air-jet looms or water jet looms are used. In such high-speed weaving, since the weaving speed is high, the influence on the deterioration of the texture of the textile machine is more significant than in the conventional *'f4. Therefore, it is desirable that the stopping time of the machine is as short as possible in the machine room, while in the machine room, unlike the conventional frame*shoulder, the weft is moved by a fluid such as air or water without using a shuttle. Since the spout is flying, weft insertion errors are more likely to occur than on frame looms. That is, the so-called weft is not supplied from the jet nozzle.

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 on the opposite side of the jet nozzle.

In addition, in jet looms that operate at high speeds, even if the drive is stopped immediately after discovering a mistake, it is necessary to prevent each part of the loom from being destroyed due to excessive reduction. The timing is selected so that after a weft insertion error is detected, the machine stops after approximately one cycle of inertia operation.

Therefore, conventionally, when the jet loom stops due to a weft insertion error signal, the next 'l
Since the second insertion cycle is executed, one machine is reversed and not only the weft where the insertion error occurred, but also
It is also necessary to remove the weft yarn inserted in the cycle after the weft insertion error. However, the weft yarn that was directly inserted due to a binding error was beaten like a normal weft yarn, and the a15
It is held firmly in place and cannot be easily removed.
The removal work is extremely cumbersome. However, when reversing as described above, it is necessary to reverse the loom by operating each part of the loom according to complicated work procedures in order to avoid the gap caused by the weft insertion error and to restart the spinning machine, which requires a great deal of skill. ing.

Also, the warp threads (including the selvage threads) may be cut during weaving work,
When the switch of the II loom is turned off by human operation, the loom stops after operating for about one cycle due to inertia for the same reason as mentioned above. In order to prevent defects such as one step from occurring on the I cloth, when trying to remove the grain that was inserted during this inertial movement, the previous; heathered and M1
For various reasons, its removal is not easy.

The present applicant solves the above problem by using the @ erase method, and uses jet loom error yarns (i.e. weft entry f% error and l = a yarn, broken warp yarns, etc.). When an abnormal stop signal of the loom is detected in the jet loom, where the jet nozzle inserts the weft into the shed formed between the upper and lower diameter yarns, the jet nozzle JL/D9 grips the fed weft yarn and the loom The machine is braked while preventing weft insertion until the machine stops, and then the machine is operated until the machine can handle the error yarn that caused the abnormal stop signal to be sent without supplying the weft to the shed. We proposed a jet loom error handling method that reverses the table.

The present invention relates to a weft insertion device suitable for carrying out the method proposed by the applicant mentioned above. That is, the present invention provides a gripper in the weft path leading from the weft length measuring device to the jet nozzle, and transmits the movement of a cam that moves in conjunction with the crankshaft of the machine base to the clipper via a transmission member. - In a jet loom weft insertion device in which the weft inserter can be opened and closed in conjunction with the S rank shaft, a control member is connected to the transmission member, and the control member controls the movement of the cam to the transmission member. This is a seat-frame weft inserting device that is characterized by transmitting the operating state to the gripper and transmitting the movement of the cam to the gripper and suppressing the inactive state. The gripper of the present invention can operate 1 flll in synchronization with the crankshaft of the machine during steady operation, and can operate independently from the crankshaft when handling error yarns. To easily repair a jet loom at the time of stoppage etc. by operation without requiring any skill.

The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows an air jet! according to the present invention. - It is a side view showing the necessity of the drive system of the room, and power is transmitted from a drive motor 11 to a crankshaft i5 via a transmission member such as a V-belt 13, similar to a conventionally known device. The crankshaft 15 drives the yarn beam 19 via a transmission 117 to unwind the warp threads 21, and also causes the surface roller 31 to frictionally drive the winding roller 32 to wind up the woven fabric 33. The transmission 17 has a gear ratio adjusted according to the displacement of the tension roller 23, and sets the tension of the warp threads being pulled out via the back roller 22 to a predetermined value. crankshaft 1
5 further moves the heald frame 24 up and down to cause the warp threads 21 to perform the required shedding movement, and also moves the reed 25 and the weft insertion guide 26
Actual position M and break? J! It is moved between positions and beats the inserted weft threads. Reed 25. The weft insertion kite 26 is attached to the sled 27, and the weft insertion kite 26 is attached to the sled 27.
7 is supported by a locking shaft 29 via a slay sword 28. The above configuration is the same as a conventional air jet room.

Next, the weft inserting device will be explained with reference to FIG.
The weft yarn 44 is unwound by a foot roller 43 after passing through a tensor 42 from the weft yarn 1, and is stored in a boule vibe 46 by an air nozzle 45. The length measuring drum 50 is interlocked with the crankshaft 15 (Fig. 1), and is friction driven by the foot roller 4]8.
(FIG. 1), a predetermined length of the weft 44 is measured by the feed roller 43 and supplied to the air nozzle 45. Boulvibe 4G has an axial sleeve 1~ on one side.
47 and Boo! The weft yarn 44 stored in the revive 46 can be taken out from its sides I, j, b, and 7. In addition, instead of the above-mentioned length measuring and storage mechanism combining a feed roller and a pool vibrator, for example, JP-A-57
Even if a length measuring storage mechanism is used, which is disclosed in Japanese Patent Application Laid-open No. 16946 and JP-A-56-58028@, in which a weft is wound around the circumferential surface of a length measuring drum and the unwinding from the length measuring drum is controlled. good.

Pool vibe 46 and main air jet nozzle 49
A gripper 48 is provided in between. As shown in FIGS. 3 and 4, the gripper 48 includes a lower gripping plate 59 that is fixedly installed, and an upper gripping plate 5 that is movable with respect to the lower gripping plate 59.
3. It consists of a rod 54 connected to the upper clamping plate 53, and a spring 55 that urges the rod 54 to press the upper clamping plate 5C against the lower clamping plate 59.

A connecting rod 56, which is a part of the transmission member of the present invention, is rotatably supported around a pin 57. 2 bling 58
is stretched on the connecting rod 5G, and the right end of the connecting rod 56 is brought into contact with the lower end of the rod 54 of the gripper 48.

A cam 63 is rotatably supported around a crankshaft 15 (which is rotatable in synchronization with the movement shown in FIG.
A cam follower 67 rotatably mounted on a bar 65 is brought into contact with the cam 63.

The right end of the lever 65 can be engaged with the left end of the connecting rod 5G. Further, an armature 9 of an electromagnetic solenoid 68 is connected to the lever 65. The electromagnetic solenoid 68 is a reciprocating member of the present invention, and is in a non-energized state in which the right end of the lever 65 is engaged with the left end of the connecting rod 56 as shown in FIG. It is possible to take an excitation state where it is pulled away from the right end. Note that instead of the electromagnetic solenoid 8, a fluid pressure cylinder such as an air cylinder may be used.

During steady operation of the machine, electromagnetic strain,
Noid 68 becomes de-energized. Therefore, the lever 65 contacts the cam 63 and is rotated by the cam.

The movement of the lever 65 is transmitted via the connecting rod 56 to the gripper 49.
The gripper 48 opens and closes in synchronization with the crankshaft 15. This allows the weft 4 to flow from the pool vibrator 46 to the main air jet nozzle 49.
” to control the supply of

On the other hand, during unsteady operation of a concentrated platform, as shown in Figure 4,
The electromagnetic lever 7/ite 68 is energized to disengage the lever 65 and the connecting rod 5G, and the gripper 48 is in a normally closed state, gripping the weft 4 between its upper and lower clamping plates 53 and 59.

In FIG. 2, the main air jet nozzle 49,
The switching valve 61.1) is connected to the IJ # unit 62, and by the operation of the controller 62, the main air jet nozzle 49 is synchronized with the rotation of the crankshaft 15 (Fig. 1) during steady operation of the air jet room. The switching valve 61 opens and closes to inject compressed air, inserts the weft yarn 44 into a shed formed between the upper and lower warp yarns 21, and beats the weft yarn 44 with the reed 25. In addition, during one-shot weft insertion, which will be described later, the controller 62 adjusts the opening/closing timing of the switching valve 61 to inject compressed air from the main air jet nozzle 49 at a timing different from that during steady operation, and between the upper and lower warps 21. The weft yarn 44 is inserted into the formed shed, and the weft yarn 44 is plucked through the fork 25.

of the selvedge thread on the opposite side of the main air jet nozzle 49.
1. A detector 51 of an appropriate type, such as a photoelectric type, mechanical type, or fluid type, for detecting whether or not the weft yarn 44 has been reliably inserted according to the method described in Japanese Patent Publication No. 5i1-24475. 52 are provided. 73 is photoelectric type,
This is a mechanical or fluid type feeler, and detects whether the welding yarn 44 is being reliably supplied to the main air jet 7/zzle 49.

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 support end of the feed roller 43, and is biased so that the arm 83 always comes into contact with the tip of the piston of the air cylinder 8G or the armature of the electromagnetic solenoid. Therefore, due to the action of the spring 85 and the air cylinder 8G, the feed roller 43 is in a state where it is pressed against the length measuring drum 5o and driven by friction, and a state where it is separated from the length measuring drum 5o and is not driven by the length measuring drum 50. I can do it.

87 is a brake shoe for braking by rubbing against the feed roller 43 separated from the length measuring drum 5o.
(-.

Next, an embodiment of the weft insertion device of the present invention will be described with reference to FIG.

During steady operation, the solenoid 68 attached to Ii is de-energized (Fig. 3), and the piston of the air cylinder 8G is retracted. In this state, the heald frame 24 is moved to open, and the upper and lower warps 21
49 pieces of weft yarn 44 are put into the shed formed between them. That is, the weft yarn 44 unwound from the cheese 41 through the tensor 42 is measured by the foot row 543, which rotates in response to the rotation of the crank shaft 154 (Fig. 154ii), and then passed through the air nozzle! It is stored in the pool vibe 46 by I5 (FIG. 2). The gripper 48 provided between the pool via 46 and the main air jet nozzle 49 is connected to the rotation of the rank shaft 1s < Fig. 1 via the cam C3 lever 65. Controls the main air jet nozzle 49 to operate in synchronization with the crank shift set 16. The weft yarn 44, which is held in the pool pipe 46, is formed between the lower warp yarns 21 and inserted into the shed. Four main air jet nozzles are used. :jFi ft 1!
195 near the selvage thread of NU! The detected detector 5*, 52 is l! When the thread 21 is almost closed (crank angle 250-30
Check the weft insertion condition at 0 degrees), and check that the weft yarn inserted into the shed due to some reason will be transferred to the main air jet nozzle 4.
If a weft insertion error occurs in which the weft threads do not reach the selvage yarn on the opposite side of 9, the detectors 51 and 52 issue a weft insertion error signal. The motor 11 (first
(Fig.) is stopped and enters inertial operation.

Further, when a weft insertion error signal is transmitted, the electromagnetic solenoid 68 is energized, the armature 69 lifts the lever 65, and as shown in FIG. Gripper 48 by force
is closed and the weft thread 44 is gripped by the gripper 48. Therefore, the weft yarn is prevented from being inserted into the shed. It is preferable that the controller 62 closes the switching valve 61 connected to the main air jet nozzle 49 at the same time as the gripper 48 grips the weft 44 to stop the injection of compressed air from the main air jet nozzle 49.

After the machine, which was operating inertia, moved for about one cycle, the warp thread 2
1 stops when it is almost closed (crank angle approximately 300 degrees).

Next, we will begin preparations. That is, the air cylinder 86
Activate the foot roller 43, IIl & i”
5 and 50 to disable the willow thread length measuring device.

In this state, the drive motor 11 (Fig. 7) can be directly reversed, or an auxiliary motor (
(not shown) to reverse the machine by approximately 48 ol and open the warp threads 21 (Clark angle: 18011
hmm .

In this open state, manually remove the weft yarn 44 that was incorrectly inserted, then turn on the switch, or
w to automatically remove the weft yarn that has been inserted incorrectly and turn on the switch. When the switch is turned on, before the machine is restarted, one pick of weft yarn is inserted (this is called ``!7 shot t - weft insertion j''). After pulling out the weft yarn, place it at the tip of the four main air jet nozzles to cut the weft yarn. This is preferable because it is easy to detect and grasp the weft yarn, which makes it easy to remove the weft yarn that has been inserted incorrectly. The end of the weft thread that has been inserted may be cut with a cutter, and then the weft thread that has been inserted incorrectly may be removed.Next, the electromagnetic solenoid is de-energized again (Fig. 3) and the gripper 48 is opened.In this state, The air injection timing of the main air jet nozzle 49 and the auxiliary nozzle is controlled by an air injection valve (not shown), so that the air injection timing is different from that during normal operation.
One load worth of weft stored in the pool pipe 46,
Insert the weft into the shed at low speed. The auxiliary nozzle is formed integrally with the weft insertion kite or is formed into a nine-piece body.

When one shot of weft insertion is completed, the machine is rotated approximately 90 degrees in the normal direction until the warp threads 21 are closed (crank angle approximately 270 degrees), and then the machine is rotated approximately 90 degrees in order to start the air jet loom.
Do it like this.

In this state, the preparations necessary for startup are automatically performed. That is, the controller 62 connected to the main air jet nozzle 49 brings the main air jet nozzle 49 into an operating state during steady operation. Furthermore, the piston of the air cylinder 86 is moved back to press 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, restart the operation of the air jet room.

In the above embodiment, one-shot weft insertion is not necessarily required.

As described above, according to this embodiment, when a weft insertion error is detected, the gripper is closed and grips the weft independently of the operation of the crankshaft until the machine stops, thereby preventing weft insertion. be able to. Therefore, it is easy to remove only the weft threads that have been inserted incorrectly, and the removal work is easy. In addition, since the weft can be gripped by the gripper independently of the operation of the crankshaft, after weft insertion is prevented, the missed weft can be handled without performing II yarn length measurement.
The machine can be reversed. Therefore, one machine can be reversed quickly. As a result, the machine can be restarted after being stopped for an extremely short period of time, and the productivity of the air jet room is hardly lowered than in the S* input system.

In addition, it is only necessary to remove the weft yarn that was mis-inserted, and at least two weft yarns (the weft yarn that was mis-inserted and the weft thread that was inserted in the subsequent cycle) are removed at once, as in Jourai. In comparison, it is much easier to automate the process of handling misplaced threads.

In the above description, an example of repairing a weft yarn that has been inserted incorrectly has been explained, but the present invention can also be used when the air jet loom is stopped due to warp yarn breakage, selvage yarn breakage, or manual operation.

In addition, in the above embodiment, a connecting rod is provided between the lever and the gripper, and the movement of the lever is transmitted to the gripper by the connecting rod, but the connecting rod is omitted and the rod of the gripper is directly actuated by the lever. You may let them. In this case, for example, the cam 63 shown in FIG. 3 and FIG.
3.

The right end of the lever 65 is brought into contact with the lower end of the rod 54 to open and close the gripper 48 in synchronization with the movement of the crankshaft. Further, an electromagnetic solenoid 68 is provided below the lever 65. Gripper 48 independent of crankshaft operation
When closing, the armature 69 of the electromagnetic solenoid 68 is attracted and the lever 65 is pulled 1 m away from the cam 63 against the spring force of the spring 66. During steady operation, the lever 65 is moved in conjunction with the crankshaft. The gripper is opened and closed by a cam that rotates.
When an abnormal stop signal is issued, the control member prevents the agitation of the cam from being transmitted to the clipper and grips the weft yarn with the gripper to prevent weft insertion, and even if the supply of the weft yarn is stopped when the machine is reversed. Ru. Therefore, mis-thread processing can be carried out extremely easily.

The present invention makes it easy to repair the jet loom when there is a mistake in weft insertion, warp thread breakage, floating platform caused by manual operation, etc., without requiring skill. I can see it.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an outline of the spinning process of the air jet loom according to the present invention, FIG. 2 is a schematic plan view of the weft insertion 1'1 mechanism of the present invention (7) JI'M example, and FIG. FIG. 4 shows an embodiment of the present invention (a side view of the Shinju gripper to be used, and FIG. 5 shows a flowchart of the embodiment of the present invention. 11... Drive motor 15... Crankshaft 24... Heald frame, 25...Reed, 2
6...Weft insertion n kite, 43...Feed roller. 44...Weft, 46...Boule via, 48...Gripper, 50...Length measuring drum. 49... Main air jet 5 nozzle 51. 52
...Construction equipment, 54.1
1: Ko ・1 F・56...Connecting rod, 58
...Spring, 61...Switching valve, 62
...Controller, 63...Cam, 65...
・Lever, 66...Spring, :38...
Electromagnetic solenoid, 83...arm, 86
...Air cylinder. Reason 2 ■

Claims (1)

[Scope of Claims] 1. A gripper is provided in the weft light path from the weft length measuring device to the jet nozzle, and the movement of a cam that moves in conjunction with the crankshaft of the machine base is transmitted to the gripper via a transmission member. In the jet loom weft insertion device in which the gripper can be opened and closed in conjunction with a crankshaft, a control member is connected to the transmission member, and the control member controls the movement of the cam to the gripper. A weft insertion device for a jet loom, characterized in that an operating state in which cam movement is transmitted to the gripper, and an inoperative state in which cam movement is not transmitted to a gripper. 2. @2 The transmission member includes a rotatable lever and a spring that presses the lever against the cam, the control member is a reciprocating member connected to the lever, and the reciprocating member is a reciprocating member connected to the lever. Operating state where the lever is pressed by the cam,
and is designed to be in a deactivated state separated from the cam? LF A jet loom m-insertion device as set forth in Claim No. 1￥4. 3. Support the movement lever so that it can rotate once, and engage the linking lever with the zero end of the lever and gripper. A jet loom weft inserter W1 according to claim 2, wherein the lever action is transmitted to a gripper.
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