JPS61252342A - Fluid jet control in weft yarn treating 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] [Industrial Application Field] The present invention relates to a jet loom, and more particularly to a fluid jet control method in a weft processing device [Prior Art] Conventionally, fluid jet is jetted from a main nozzle in a jet loom. After weft insertion is carried out using a high-speed fluid and the weft is struck, a cutting device cuts the weft yarn near the main nozzle for the next filling. If the cut end of the weft is exposed to high-speed fluid, it may become untwisted, and as a result, when the weft is a spun yarn, yarn start may occur. For this reason, it is common practice to stop the fluid injection after the weft is cut. However, if the fluid jetting is completely stopped, the weft ends will hang down from the tip of the main nozzle, and even when high-speed fluid is jetted for the next weft insertion, the weft ends will not fly straight, and as a result, the weft ends will hang from the weft insertion guide. The weft threads will get caught and cause weft insertion errors. In order to prevent such inconvenience and to prevent the weft from coming out of the main nozzle in the opposite direction to the weft insertion direction due to the reaction during cutting, the cut weft end is transferred to the next weft after filling is completed. In order to keep it in a straight state in preparation for insertion, it was possible to inject a breeze from the main nozzle, as disclosed in Japanese Patent Application Laid-Open No. 54
It has been proposed as disclosed in Japanese Patent No.-59454.

However, in a jet loom equipped with a device for preparing weft yarns in the manner disclosed in WO 59-125943, various undesirable phenomena occur if a breeze is constantly blown from the main nozzle.

That is, in the apparatus described in Japanese Patent Application Laid-Open No. 59-125943 shown in FIG. 6, during steady operation, the weft yarn unwound through the cheese 32 and the tensor 31 is a weft yarn that rotates in accordance with the rotation of the crankshaft. After being measured by the length measuring drum 28, it passes through the gripper 72 and reaches the main nozzle 49. The operation of the gripper 72 and the main 7 nozzle 49 is controlled in synchronization with the rotation of the crankshaft, and compressed air injected from the main 7 nozzle 49 moves the weft stored on the weft length measuring drum 28 between the upper and lower warps. The weft is inserted into the shed formed in the

On the other hand, detectors 51 and 52 are installed near the selvage threads on the opposite side of the main nozzle 49, and check the weft insertion state when the warp threads are almost closed. If the selvedge thread on the opposite side of the nozzle 49 is not reached (one weft insertion error C occurs), the detectors 51 and 52 will issue a weft insertion error signal. When the weft insertion error signal is generated, the piston of the reciprocating member 62 moves forward and causes the shutter 63 fixed at the tip of the suction nozzle 61 to intersect with the weft path.In this way, the weft that is ejected from the main nozzle 49 after a weft insertion error is guided by the shutter 63, and the airflow is ejected. The weft yarn is sucked into the suction nozzle 61 under the action of the electromagnetic valve 65 that controls the weft yarn.Therefore, weft insertion is prevented after the weft insertion error signal is sent, and the weft yarn is connected from the shed to the main nozzle 49 via the suction nozzle 61. The cutting function of the weft thread cutting cutter 64 may be temporarily disabled so that the weft threads that have been inserted incorrectly are connected to the main nozzle. If this is done, the weft threads that have been incorrectly inserted may be connected to the main nozzle. This facilitates the removal of the weft threads that have been entrapped.However, this is not absolutely necessary for carrying out the invention.

If a breeze is continuously blowing out from the main nozzle 49 during this state, the solenoid valve 65 will close after the suction nozzle 61 completes suction, stopping the air flow to the suction nozzle 61. In addition, due to the relative positional deviation between the main nozzle 49 and the shutter 63, the weft yarn that had not been sucked into the suction nozzle 61 is pulled out by the breeze, forming a loop inside the warp opening. There is a possibility of getting into it.

For example, after eliminating the cause of weft insertion errors and cutting the weft between the main nozzle 49 and the sagging nozzle 61 with the cutter 64 in order to perform the next weft insertion, it is possible to remove the If the weft threads are exposed to a breeze for a long time, they will untwist and break.

[Problem to be Solved by the Invention 1] Therefore, in the conventional technique of blowing a breeze from the main nozzle, the weft yarn may enter the loop between the warp openings during blowing, or the weft yarn may become untwisted, causing blow-off. There was a problem. It is an object of the present invention to provide a fluid jet control force method that quickly solves these problems.

Means and operation for solving problem E] For this purpose, the present invention has a system that interrupts weft insertion when a mistake occurs in the engine which inserts the weft from the weft length measuring drum using the main nozzle. In a fluid injection control method for weft processing vcrr1 that sucks weft yarns, a breeze circuit having a solenoid valve for blowing breeze is connected to the main nozzle, and the solenoid valve is closed when the machine is stopped, and then the main nozzle is closed when the machine is stopped. Weft measurement after reversal
The valve is open during ram phasing and reopens when the lighthouse is restarted. That is, when the machine is stopped, the weft yarn interception and suction are substantially completed, and according to the present invention, the injection of breeze is stopped at this point, and the suctioned weft yarn enters the warp opening in a loop shape. to prevent In addition, before and after the weft measuring drum phase is adjusted, there is a step of reversing the machine by slow inching, but during this step, the injection of breeze is also stopped to prevent the weft passing through the main nozzle from being blown out. is being prevented.

[Embodiment] Next, details of a preferred embodiment of the fluid injection control method according to the present invention will be described with reference to the accompanying drawings, where the same reference numerals indicate the same or corresponding parts. do.

FIG. 1 shows a weft processing device for a Couette loom that implements the fluid injection control method of the present invention. A crankshaft (not shown) of the loom is connected to a drive shaft 19, and a main motor is driven by a belt in a well-known manner. Driven. Further, the drive shaft 19 is connected to a clutch member 14, and is connected to a winding arm 28a of a weft length measuring drum 28 via another clutch member 15 that engages with the clutch member 14 and a drive belt 27. The weft length measuring drum 28 itself may be of a well-known type, and the pins 29 and 30 protrude and retract from the circumferential surface of the weft length measuring drum 28 in synchronization with the rotation of the crankshaft in a well-known manner, and pass through the weft cheese 32 through the tensor. The winding of the unwound weft yarn onto the measuring V-ram 28 and the withdrawal to the main nozzle 49 are controlled.

The clutch member 15 is spline-coupled to the driven shaft 20. Further, the sleeve 16 is installed to be rotatable and movable in the axial direction relative to the driven shaft 20. Therefore, the clutch member 15 moves integrally with the sleeve 16 in the axial direction, but can rotate relative to the sleeve 16. As shown in the figure, the clutch members 14 and 15 are formed with engaging protrusions and four parts that extend to positions eccentric from the axes of the drive shaft 19 and the driven shaft 20. Clutch members 14.15 are engaged.

A compression spring 18 is installed between the boss 17 fixed to the driven shaft 20 and the left end of the sleeve 16, and the clutch member 1
5 is always urged rightward, that is, toward the clutch member 14 side. Teeth 11134 are integrally attached to the end of driven shaft 20. Gear 34 is engaged with teeth 1135, and gear 35 is connected to the output shaft of auxiliary motor 36 via electromagnetic clutch 33. Pin 2 with lever 21 installed on the machine base
2, and its tip is engaged with the sleeve 16. The other end of the lever -21 is connected to a piston rod of an air cylinder 23 by a pin 24.

Then, by operating the switching valve (not shown), the air cylinder 2
When the piston rod 3 is depressed, the lever 21 rotates counterclockwise to disengage the clutch member 14, 15 against the spring force of the compression spring 18. If the electromagnetic clutch 33 is connected in this state, the rotation of the auxiliary motor 36 is transmitted to the winding arm 28a of the weft length measuring V ram 28 via the gears 34, 35 and the drive belt 27. On the other hand, when the piston rod of the air cylinder 23 is moved backward, the spring force of the compression spring 18 causes the clutch member 14.1 to move backward.
5 is engaged, and the rotation of the main motor is connected to the winding arm 28a of the weft length measuring drum via the drive belt 27. Limit switch 26 is actuated by lever 21 to detect engagement of clutch member 14,15.

Reference numeral 71 is a yarn guide, and 72 is a gripper, which includes a cam 11 that rotates in time with the crankshaft, and a fulcrum 1.
The cam 7 is opened and closed by a lever 12 that swings around the cam 7 and a cam 7 lower 10 supported by the lever 12. The detector 73 detects that the weft yarn is being supplied to the main nozzle 49.

The main nozzle 49 injects compressed air in synchronization with the movement of the crankshaft, and inserts the weft yarn into a shed formed between the warp yarns. The detectors 51 and 52 detect the insertion of the weft thread, and the reed 2
5 beats the inserted weft yarn.

Further, an ejector type suction 77: 61 is provided as a suction member between the main 77: 49 and the selvage thread. A shutter 63 is rotatably supported, and a suitable reciprocating member 6 such as an F-cylinder or an electromagnetic lens is supported.
2 is connected to the rotation shaft of the shutter 63. Due to the operation of the reciprocating member 62, the shutter 63
It is movable between a position outside the weft path ejected from 9 and a position on the weft path.

The F-blow nozzle 66 faces the suction nozzle 61 across the feeding passage, and injects an air flow toward the suction nozzle 61 to direct the weft yarn blocked by the shutter 63 to the suction nozzle 61. Blow in and aspirate.

Next, the air system will be described. A solenoid valve 1 is connected to a conduit 9 communicating with a compressed air source (not shown), and the output of the solenoid valve 1 supplies compressed air to the main nozzle 49. That is, on the downstream side of the solenoid valve 1, the conduit 9- further includes a main nozzle pressure regulating regulator 2, a solenoid valve 4 for preventing the main nozzle 49 from injecting air when the machine is stopped or reversed, and a crankshaft. Injection valves 5 are sequentially connected to supply air to the main nozzle 49 at a predetermined timing, and a pipe 9a branched from between the tank 3 and the electromagnetic valve 4 is connected to a pipe 9a for controlling a breeze. A solenoid valve 6 and a throttle valve 7 for controlling the flow rate are connected to supply a breeze to the main nozzle 49 according to the invention.

In the embodiment, the injection valve 5 is a mechanical valve driven by a cam (not shown) that is linked to the rotation of the crankshaft, but it may also be an electromagnetic injection valve that is similarly controlled by the control device 8. In that case, By changing the program of the control device 8, it is possible to omit either the solenoid valve 4 or the injection valve 5.

Each of the electromagnetic valves 1.4 and 6 described above is electrically connected to a suitable control device 8 as shown, and its operation is controlled in a manner described below. In addition to the limit switch 26, electromagnetic clutch 33, detector 51, 52, etc. mentioned above,
Solenoid valve 65 of suction nozzle 61, air cylinder 62
A solenoid valve (not shown) for the air bubble a-nozzle 66 is also connected to the control device 8, and its operation is controlled. A machine rotation angle detection device such as an encoder 10 is connected to the control device 8, and the machine rotation angle is determined based on a machine (crankshaft) rotation angle signal input from the encoder 10 to the control device 8. As is well known, each part is controlled in synchronization with the crankshaft.

Hereinafter, the operation during steady operation and during abnormal stop will be explained with reference to FIGS. 1 to 5.

(During steady operation) The crankshaft is driven by the main motor to cause the heald frame to move in an opening motion, and the weft is inserted into the shed formed between the upper and lower warps.

That is, in FIG. 1, from the weft cheese 32 to the tensor 3
The weft unwound through the winding arm 2 of the weft length measuring drum 28 rotates in accordance with the rotation of the crankshaft.
After being wound around the weft length measuring drum 28 and measured by the weft yarn length measuring drum 8a, the yarn passes through the gripper 72 and reaches the main nozzle 49. The operation of the gripper 72 and the main nozzle 49 is controlled in synchronization with the rotation of the crankshaft, and compressed air injected from the main nozzle 49 moves the weft stored on the weft length measuring drum 28 into a shape between the upper and lower warps. Insert the weft into the shed.

In this regular pine state, Fig. 1jIJ1, Fig. 3~
As can be understood from each diagram in FIG. 5, the solenoid valves 1, 4, and 6 are turned on (open) under the action of the control device 8, and compressed air passes through the solenoid valve 1 and the regulator 2 to the tank 3. Go inside. The breeze is supplied to the main nozzle 49 via the electromagnetic valve 6 and the throttle valve 7 in the conduit 9a. The air for inserting the weft yarn passes through the solenoid valve 4 and reaches the main nozzle 49 via the injection valve 5, which opens and closes at a timing that matches a predetermined crankshaft rotation angle, and the air flows from the weft cheese 32 to the main nozzle 49. Weft insertion is performed in a well-known manner.

Next, a weft supply preparation method at the time of abnormal stop will be explained.

(When weft insertion error occurs) Referring to the second row from the right in Figures 1 and 2 and Figure 3, the detectors 51 and 52 installed near the selvedge yarns on the opposite side of the main nozzle 49 detect the warp yarns. Almost at opening (crank angle α=2
50 to 300°) Check the weft insertion condition, and if for some reason the weft inserted into the shed does not reach the selvage yarn on the opposite side of the main nozzle 49, or a weft insertion error occurs,
The detectors 51, 52 issue a weft insertion error signal (crank angle α in FIG. 3).

A main motor stop signal based on this weft insertion error signal causes the main motor that drives the machine frame to stop operating, and enters inertial operation (crank angle a in FIG. 3).

In addition, when the input error signal is sent, the reciprocating unit 62
The piston moves forward to cause the shutter 63 to intersect the path of the weft yarn, and compressed air is injected from the air blow nozzle 66. In this way, the weft yarn ejected from the main nozzle 49 after a mistake in threading is blocked by the shutter 63, guided by the air jetted from the air blow nozzle 66, reaches the suction nozzle 61, and is sucked into the suction nozzle 61.

After the machine was operating inertia for about one cycle, the warp threads were almost closed (crank angle a2 = about 300°).
The machine will stop and a machine stop signal will be sent.

Based on this signal, the control device 8 closes the solenoid valves 1.4 and 6. Therefore, since no breeze is ejected from the main nozzle 49, the weft suctioned by the suction nozzle 61 does not come out and enter between the warp yarns.

When the machine stops, the operator turns on the reverse button. As a result, the air cylinder 23 is activated, the clutch members 14 and 15 are disengaged, and the rotation of the crank pongee is not transmitted to the winding arm 28a of the length measuring drum, while the electromagnetic clutch 33 is connected. In this state, the machine base is reversed (crank angle α in Figure 3). Furthermore, although the solenoid valve 1 is opened, the solenoid valve 6 remains closed. When the machine starts reverse rotation, the air cylinder 23 is turned off, and the clutch member 15 is pressed toward the clutch member 14 by the spring 18, but both clutch members 1
4.15 are out of phase, so they do not engage, and the rotation of the crank pongee is caused by the winding arm 28a of the measuring drum 28.
It doesn't get across.

In order to remove the wrong weft inserted into the shed, the machine is
The crank angle (crank angle α, = approx. 180°)
Until then, the machine is stopped after the machine reverses (from 300° to 180°).

Next, the operator inspects the machine and first checks to see if the weft yarn is connected from the weft cheese 32 to the suction nozzle 61 (if it is not connected, the next processing is performed as a supply error). The worker removes the weft thread that was inserted incorrectly, turns on the confirmation button installed for fool proofing, and then turns on the start button (crank angle α5 in Fig. 3). At this time, the solenoid valve 6, which had been kept closed, is opened in preparation for the primary phase adjustment to remove the weft on the weft length measuring drum 28, and a breeze is ejected from the main nozzle 49. - The driven shaft 20 and the winding arm 28a of the weft length measuring drum 28 are driven in the positive direction by the auxiliary motor 36 in order to perform the next phase matching.As a result, when the phases of the criss-crossing members 14 and 15 match, compression is achieved. Both clutch members 1 are pressed by the spring 18
4.15 engage with each other, and the rotation of the auxiliary motor 36 is stopped (crank angle α6 in FIG. 3). Therefore, during this time,
The winding arm 28a of the weft measuring drum (crank angle when stopped = approximately 300') is rotated forward to an angle corresponding to the crank angle (approximately 180°) of the reversed machine base (normal rotation angle is 240°), Winding arm 28a
With the rotation, the hinge 30 of the weft length measuring drum 28 is retracted, and one pick worth of weft on the length measuring drum 28 is removed.
The suction nozzle 61 suctions and removes the liquid with the aid of a breeze ejected from the main nozzle 49.

Next, the weft in front of the main nozzle 49 is cut by a cutter provided near the suction nozzle 61, and then,
The air cylinder 23 operates, and the clutch members 14, 15
is disengaged, and the rotation of the crank pongee is not transmitted to the winding arm 28a of the length measuring drum. On the other hand, the electromagnetic clutch 33 is connected, and in this state the machine base is reversed for alignment (see Fig. 3, crank angle α
7) The solenoid valve 6 is closed again to prevent the weft from blowing out, and the breeze from the main nozzle 49 is stopped.

When the machine starts to rotate in reverse for alignment, the air cylinder 23 is turned off and the clutch member 15 is pressed against the clutch member 14 by the spring 18, but since the phases of both clutch members 14 and 15 are out of alignment, There is no engagement, and the rotation of the crank pongee is not transmitted to the winding arm 28a of the weft length measuring drum 28.

Further, the solenoid valve 6 serves as an opening/closing valve for this automatic mouth alignment. The machine is in the restart position and the crank angle α8 is approximately 300”
) and stop.

Next, for secondary phase alignment of the weft length measuring drum 28,
The auxiliary motor 36 drives the driven shaft 20 and the weft length measuring drum 2.
8 winding arm 28a is driven in the forward direction (
Crank angle 180° → 300° 120°). When the phases of clutch members 14 and 15 match, both clutch members 1
4.15 is engaged and the rotation of the auxiliary motor 36 is stopped.

In this opening, the winding arm 28a1 of the weft length measuring drum 28. is rotated forward by an angle corresponding to the amount of reverse rotation of the machine (α in Fig. 3), the throat 30 of the weft length measuring drum 28 protrudes, and the pin 29 retracts (Fig. 1). The weft for one pick is stored on 28.

During this time, the solenoid valve 6 remains closed. In this state, the operation of the machine is resumed, and the solenoid valve 6 is also opened.

(At the time of weft supply error) Referring to the right end of Figure 2 and Figure @4, one of the causes of the above-mentioned inserting error is that the weft yarn is cut between the weft cheese 32 and the main nozzle 49, and the main There is a so-called supply error in which the weft yarn is not supplied to the nozzle 49.

In this case, the weft yarn is not normally connected from the weft cheese 32 to the suction nozzle 61 when the machine is stopped. In such a case, after stopping the above-mentioned reverse rotation of the machine, the process of removing the weft that was incorrectly inserted and the process of turning on the confirmation button will open the weft at the crank angle α, ~α5) shown in The thread is threaded through the length measuring drum 28 so that the weft is normally connected from the weft cheese 32 to the suction nozzle 61. That is, the weft is pulled out from the weft cheese 32, passed through the main nozzle 49 from the circumferential surface of the weft length measuring drum 28, and the tip of the weft is put into the sagging nozzle 61.

In this way, from the weft cheese 32 to the suction 7X'le 61
When the weft is guided to the point where the weft is guided and the start button is pressed, the auxiliary motor 36 drives the driven shaft 20 and the winding arm 28a of the length measuring drum in the forward direction in order to perform the next phase alignment of the weft length measuring drum according to the procedure described above. The machine is rotated forward to an angle corresponding to the crank angle of 180° of the reversed machine base (the forward rotation angle is 240°).
The weft yarn for the big part is removed and suctioned away by the succinct nozzle 61, and when the clutch members 14 and 15 match their phases, they engage with each other and the rotation of the auxiliary motor 36 is stopped.

During this weft length measuring drum-next phase alignment, the solenoid valve 6 is open, and with the help of a slight breeze, the one from the length measuring drum 28 is
The weft yarn for the big part is removed.

Next, the cutter cuts the weft yarn in front of the main nozzle 49, and then, with the clutch members 14 and 15 disengaged, the machine is reversed to the restart position (crank angle 300°) for mouth alignment. and stop.

During this automatic alignment and during the subsequent secondary phase alignment, the solenoid valve 6 is closed.

Furthermore, in order to perform secondary phase alignment of the weft measuring drum, the auxiliary motor 36 drives the driven shaft 20 and winding arm 28a of the length measuring drum in the positive direction again, causing the bins 30 and 29 of the length measuring drum 28 to emerge and retract. , the length measuring drum 28
Store 1 block worth of weft (about 3 and a half turns of weft) on top. In this state, the machine will resume operation. Moreover, the solenoid valve 6 is opened again.

(When the warp thread breaks or when the selvage thread breaks) Referring to the second row from the left in Figure 2 ffi and Fig. 5, if the warp thread or the selvage thread breaks, after the machine has stopped,
Bind the cut warp threads or selvedge threads, turn on the confirmation button,
Turn on the start button again.

When the warp yarn breaks or the selvedge yarn breaks, there is no weft yarn that has been inserted incorrectly, so there is no need to remove the weft yarn.In order to make the weft yarn length from the tip of the main nozzle 49 to a predetermined length, the crank angle ( From α2 = approximately 3゛00°), a predetermined crank angle (α) that is optimal for cutting the weft thread is determined.

= approx. 180°), reverse the machine (300° → 1
120° of 80°). The solenoid valve 6 is opened and closed as shown.

Thereafter, following the same procedure as when turning on the start button in the case of a mistake in threading, the auxiliary motor 36 moves the driven shaft 20 and the winding arm 2 of the weft length measuring drum 28.
8a is driven in the forward direction (measuring drum - next phase alignment)
, the machine is rotated forward to an angle corresponding to the crank angle (approximately 180°) of the reversed machine base (the crank angle that is forwarded is approximately 24 degrees).
0°), one big weft on the length measuring drum 28 is removed and suctioned away by the suction nozzle 61, and the clutch members 14 and 15 engage with each other when their phases match,
The rotation of the auxiliary motor 36 stops.

Next, the cutter cuts the weft yarn in front of the main nozzle 49, and then, with the clutch members 14 and 15 disengaged, the machine is moved to the restart position (300° in terms of crank angle) for mouth alignment. Reverse and stop.

Next, the auxiliary motor 36 drives the driven shaft 20 and the winding arm 28a of the V-weft measuring drum 28 in the forward direction again, so that the bins 29 and 30 of the length-measuring drum 28 come and go, and are placed on the weft sub-length drum 28. Weft for 1 bi-tsuku (
Approximately 3 and a half rolls) are stored. In this state, the machine will resume operation. The solenoid valve 6 is also opened.

(When operating the stop button) In this case, the process is the same as the process at the time of warp thread breakage or selvage thread breakage described above, except that the warp thread or selvage thread binding step is not necessary.

In the above embodiment, between the machine stop and restart, at least one pick worth of weft stored in the weft length measuring drum is suctioned and removed by the suction member suction nozzle 61 provided on the exit side of the main nozzle. However, when carrying out the present invention, the weft yarn is not limited to suction using a suction member, and the weft yarn may be removed by other appropriate taking-off means such as a winding tool. Therefore, in this specification, "suction" includes "taking" by such means.

Furthermore, the method of the present invention can be applied even after detecting a misplaced yarn and preventing weft insertion by gripping the weft yarn next to the misplaced yarn with a gripper or the like on the upstream side of the main nozzle to prevent it from being ejected from the main nozzle. It is possible.

[Effects of the Invention] As described above, according to the fluid jetting control method of the present invention, the solenoid valve for jetting a breeze is turned off after the weft suction is completed, so that otherwise the weft in the succinct nozzle would be There will be no inconvenience such as the yarn being pulled by a breeze and entering the warp opening in a loop shape. In addition, since the breeze injection solenoid valve is turned off even during machine reversal, there is no problem that otherwise the weft of the main nozzle would be exposed to the breeze for a relatively long time and become untwisted and blown out. Furthermore, in a preferred embodiment, in case of a feeding error etc., the crank angle α,=1
Since a slight breeze is blown at the 80° position and suction can be carried out by the suction nozzle, there is no need to put the weft into the suction nozzle when threading the weft length measuring drum, which improves work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a noette room equipped with a weft processing device that implements the fluid jet control method of the present invention, and FIG. 2 is an embodiment of the present invention in which the working tool is shown surrounded by double lines. Example 7
0-chart diagram and Pt53 diagram are chart diagrams showing processing operations when weft insertion errors occur according to the present invention, FIG. 4 is chart diagrams showing processing operations when weft feeding errors occur according to the present invention, and FIG. FIG. 6 is a chart diagram showing processing t5I at the time of warp or selvage thread breakage, and is a plan view of an example of a conventional weft processing device. 6... Solenoid valve for breeze injection 8... Control device 28...
・Weft length measuring drum 49...Main nozzle 61...
・Suction nozzle applicant: Toyota Automation Co., Ltd. Iso Manufacturing Co., Ltd. Figure 3 Figure 4 Figure 5 Figure 6 Procedural amendment (voluntary) 1985 5th resolution 7th day

Claims (1)

[Claims] In a fluid jet control method for a weft processing device, in which the weft insertion is interrupted and the weft is sucked when a mistake occurs in a jet loom where weft threads from a weft length measuring drum are inserted by a main nozzle, the main nozzle is equipped with a main nozzle for ejecting a breeze. A breeze circuit with a solenoid valve is connected, and the solenoid valve is closed when the machine is stopped, then opened during phase alignment of the weft length measuring drum after the machine is reversed, and reopened when the machine is restarted. characterized by
A fluid jet control method in a jet loom weft processing device.