JPH0390654A - Yarn supplying device in jet loom - Google Patents

Abstract

PURPOSE:To surely perform yarn supplying process in a short time by purging wound yarn, cutting top end of weft transferred into yarn supplying tube with blow nozzle and introducing into main nozzle for generation of yarn breakage between weft length measuring and storing device and main nozzle. CONSTITUTION:Yarn breakage generated between a weft length measuring and storing device 5 and a picking main nozzle 11 is detected and a wound yarn purging arm 14a is revolved to a position expressed by chain line by a controlling computer, then wound yarn on yarn winding surface 5b is purged onto a wound yarn-purging part 6b, thus said purged yarn is introduced into dust tubes 18 and 19 by jet flow of a transferring blow nozzle 16 through yarn supplying tube 15. Next, a moving guide 24a is raised to the yarn piercing position and weft Y pulled to a dust box 20 with jet flow of a blow nozzle 21 is laid on a yarn-receiving depressed part 24b, then an electromagnetic valve V7 is opened, thus suction flow is generated at an inlet part 11a of the main nozzle 11 and simultaneously a cutter 22 is operated to cut top end part of weft Y, then the weft Y is introduced into said nozzle inlet part 11a with sucking.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides a weft length measurement method in the event of a yarn feeding error such as weft cutting between a wrapping type weft length measurement storage device and a weft insertion main nozzle. This invention relates to a device for inserting a weft tip pulled out from a storage device into a weft insertion main nozzle.

[Prior Art] This type of yarn feeding and processing device is disclosed in Japanese Patent Application Laid-Open No. 60-2749,
JP-A-64-40638 and JP-A-1-9245
It is disclosed in Publication No. 2. In the conventional device disclosed in Japanese Patent Application Laid-Open No. 60-2749, a guide nozzle is disposed between a winding-type weft length measurement and storage device and a main weft insertion nozzle, and a guide nozzle is disposed between the weft measurement and storage device of the winding type. A guide suction tube is disposed on the side of the guide suction tube, so that the remaining yarn wound on the yarn winding surface is suctioned into the guide suction tube and inserted into the guide nozzle.

In the conventional device disclosed in Japanese Patent Application Laid-open No. 64-40638, the remaining thread on the winding surface is mechanically grasped.

The holding body is moved to the vicinity of the entrance of the main nozzle for weft insertion, and the gripped yarn is inserted into the main nozzle for weft insertion.

In the conventional device disclosed in JP-A-1-92452, a yarn feeding nozzle is disposed between the weft measuring and storing device and the main nozzle for inserting the weft, and a yarn feeding nozzle is disposed between the yarn feeding nozzle and the weft measuring and storing device. A first guide pipe is disposed so as to be switchable between a guide position and a retracted position, and a second guide pipe is disposed between the yarn feed nozzle and the main nozzle for weft insertion. It is arranged so that it can be switched between.

[Problems to be Solved by the Invention] However, in the conventional device disclosed in Japanese Unexamined Patent Publication No. 60-2749, in order to pull out the remaining yarn on the yarn winding surface of the weft length measuring and storage device, the guide suction tube is moved close to the yarn winding surface. However, it is difficult to pull out and remove the remaining yarn on the yarn winding surface using only the suction action of the guide suction tube.

In the conventional device disclosed in Japanese Patent Application Laid-Open No. 64-40638, the mechanism for mechanically grasping the unwrapped yarn on the yarn winding surface and inserting it into the main nozzle for weft insertion is extremely complicated. As a result, it is unavoidable that the processing operation takes a long time.

In the conventional device disclosed in JP-A-1-92452, the normal weft path position during loom operation and the yarn feeding path position during yarn feeding processing are approximately the same, and a pair of guide pipes are used to form the yarn feeding path. It must be switched and placed on the weft path. In order to ensure yarn feeding guidance from the yarn winding tube to the main nozzle for weft insertion, the length of the first guide pipe is approximately the length of the weft path between the yarn winding tube and the yarn feed nozzle, and the length of the second guide pipe is approximately the same as the weft path length between the yarn winding tube and the yarn feeding nozzle. The length needs to be approximately the same as the weft path length between the yarn feed nozzle and the main weft insertion nozzle, but such an increase in the length of the guide pipe, which is switched between the two, limits the installation space for peripheral equipment, and the supply The formation of the thread path cannot be said to be appropriate.

SUMMARY OF THE INVENTION An object of the present invention is to provide a yarn feeding and processing device that can avoid complicating the mechanism and prolonging the processing time.

[Means for Solving the Problems] To this end, the invention provides a yarn feeding path on a path that is separate from the normal weft path for introducing the weft pulled out from the yarn winding tube of the weft length measuring and storage device into the main nozzle for weft insertion. a weft transfer means, a winding transfer means that removes the winding yarn on the weft length measuring and storage device and transfers it to the weft transfer means, and a winding yarn transfer means that removes the winding yarn on the weft length measuring and storage device and transfers it to the weft yarn transfer means; The yarn feeding and processing device was constructed at the bottom of the tank by a cutting means for trimming and an auxiliary transfer means for transferring and guiding the weft transferred by the weft transfer means to the entrance of the main nozzle for inserting the weft.

[Function] When yarn breakage occurs between the weft length measurement and storage device and the main weft insertion nozzle, the wound yarn on the yarn winding surface of the weft length measurement and storage device is removed by the yarn transfer means, and the weft It is delivered to the transport means.

The weft transferred to the weft transfer means is transferred to the main nozzle for weft insertion, and is also transferred and guided to the entrance of the main nozzle for weft insertion by the auxiliary transfer means. The leading end of the weft that is transferred and guided to the entrance of the main nozzle for weft insertion is trimmed by a cutting means, and the weft is inserted into the main nozzle for weft insertion with the unnecessary leading end of the weft removed.

[Example] Hereinafter, an example embodying the present invention will be described based on the drawings.

A weft yarn unwinding motor 2 is operatively connected to the base end of the rotatably supported holding bracket 1 via a gear mechanism, and a weft yarn unwinding motor 2 is connected to the base end of the holding bracket 1 which is rotatably supported.
is rotated in the weft unwinding direction by the operation of the weft unwinding motor 2.

A blow nozzle 4 for unwinding the weft is disposed near the peripheral surface of the base end side of the weft cheese 3, and pressurized air from a pressure air supply tank (not shown) unwinds the weft through a two-way valve type IOA valve v1. It is supplied to the blow nozzle 4 for feeding. The ejection axis of the weft unwinding blow nozzle 4 substantially intersects the axis of the weft cheese 3 toward the proximal circumferential surface of the weft cheese 3, and forms a shallow angle with respect to the circumferential surface of the weft cheese 3. Direction is set. As a result, the air jetted from the weft unwinding blow nozzle 4 sweeps the circumferential surface of the weft cheese 3 from the proximal end to the distal end.

In front of the weft cheese 3, a weft length measurement and storage device 5 of a known winding type is installed, and its yarn winding tube 5a is rotationally driven by a motor M that is different from the machine drive motor (as shown). . The weft that is let out from the thread-wrapped tube 5a as the thread-wrapped tube 5a rotates is moved by an electromagnetic solenoid 7 supported by the cover 6.
The withdrawal from the bobbin winding surface 5b is controlled by the protrusion and retraction of the locking pin 7a driven by. A weft introduction duct 8 is attached to the weft introduction port 5C side that communicates with the yarn winding tube 5a, and a yarn breakage sensor 9 consisting of a transmission type photoelectric sensor is installed at the introduction port 8a provided on the side of the weft introduction duct 8. is installed. A weft insertion blow nozzle 10 is connected to the weft introduction duct 8 so as to face the weft introduction port 5C, and the pressurized air from the pressure air supply tank is supplied to the weft through a two-way valve type electromagnetic valve v2. It is supplied to the insertion blow nozzle 10. The air flow ejected from the weft insertion blow nozzle 10 reaches the weft insertion main nozzle 11 on the sleigh (as shown) via the yarn winding tube 5a that communicates with the inlet 5C of the weft length measurement and storage device 5. .

A conical weft guide tube 12 is interposed between the weft cheese 3 and the weft length measuring and storage device 5, and its large diameter opening is directed toward the weft cheese 3, and its small diameter opening is directed toward the weft introduction duct. It is set opposite to the inlet 8a of No.8. As a result, almost all of the air flow ejected from the weft unwinding blow nozzle 4 is introduced into the weft guide tube 12.
The jet air flow introduced into the weft thread introduction duct 8 is introduced into the weft thread introduction duct 8.

The winding sensor 13 is located on the inner surface of the upper part of the cover 6 on the winding surface 5b.
The winding sensor 13 detects the amount of thread on the thread winding surface 5b. A motor 1 capable of forward and reverse rotation is mounted on the upper outer surface of the cover 6.
4 is installed, and a yarn removal arm 14a is attached to its drive shaft. The thread winding surface 5b is formed of a plurality of divided pieces, and the thread removing arm 14a passes through the slit 6a on the cover 6 and the gap between the divided pieces to the first
The arrangement can be switched between the standby position shown by the solid line in the figure and the chain line position.

A thread removal part 6b is recessed in the lower part of the cover 6.
A yarn feeding tube 15 is connected to the front side of the yarn removing section 6b, and a transfer blow nozzle 16 is arranged to face the entrance of the yarn feeding tube 15 at the rear side of the yarn removing section 6b. It is set up. The transfer blow nozzle 16 is connected to the pressurized air supply tank via a solenoid valve v3.

The outlet of the yarn feeding tube 15 is the inlet 1 of the main nozzle 11 for weft insertion.
1a, and a slit 15a is provided on the upper surface of the yarn feeding tube 15 from the entrance to the exit. A yarn guide forming body 17 is erected and supported at the front and rear intermediate portions of the yarn feeding tube 15, and the yarn guide forming body 1
A yarn guide hole 17a is provided in the upper part of the yarn guide hole 7, and the yarn guide hole 17a and the slit 15a of the yarn feeding tube 15 are connected by a slit 17b.

A straight dust pipe 18 is provided in the extending direction of the outlet of the yarn feeding pipe 15.
An angled dust pipe 19 is disposed, and a dust box 20 is disposed in the extending direction of the outlet of the dust pipe 19. A blow nozzle 21 is arranged at the angle part of the dust pipe 19 so as to face the dust box 20, and the blow nozzle 21 is equipped with a two-way valve type electromagnetic valve v.
4 to the pressurized air supply tank.

A cutter 22 is interposed between the two dust pipes 18, 19 and is operatively connected to an air cylinder 23. , the air cylinder 23 is connected to a pressure air supply tank via a three-way solenoid valve v5,
The cutter 22 performs a cutting operation as the air cylinder 23 moves in and out.

An air cylinder 24 is disposed facing upward below the gap between the yarn feeding pipe 15 and the dust pipe 18, and a transfer guide 24a is attached to the tip of its driving iron. The air cylinder 24 is a three-way valve type! It is connected to the pressure air supply tank via a magnetic valve (6). Transfer guide 2
4a can be switched between the standby position shown in FIG. 2 and the threading position shown by the chain line in FIG. 6 by moving the air cylinder 24 in and out, and the transfer guide 24a is provided with a thread receiving recess 24b. A limit switch type weft detector 25 is installed on the side surface of the transfer guide 24a, and its detection lever 25a extends between the yarn feeding tube 15 and the transfer guide 24a, and also controls the arrangement of the yarn feeding tube 15. The detection lever 25a is set so as to always overlap the area of the thread receiving recess 24b when viewed in the direction.

A photoelectric sensor type thread breakage sensor 26 is installed at the entrance 11a of the main nozzle 11 for weft insertion, and a fixed blade 11b is installed at the top of the tip of the main nozzle 11 for weft insertion. It is fixed so that it protrudes. A blow nozzle 27 is installed directly below the main nozzle 11 for weft insertion, and the blowing direction of the blow nozzle 27 is set to be directed to the injection path of the main nozzle 11 for weft insertion. A weft introduction duct 28 is installed directly above the main nozzle 11 for weft insertion, and its introduction port 28a is set at a position opposite to the injection port of the blow nozzle 27 across the injection path of the main nozzle 11 for weft insertion. At the same time,
The outlet 28b is set at a position pointing toward the rear of the weft insertion main nozzle 11. An air guide 29 is installed behind the outlet 28b, and a weft detector 30 consisting of a transmission type photoelectric sensor is attached to the tapered internal passage of the air guide 29. A suction pipe 31 is installed behind the air guide 29, and the outlet side of the suction pipe 31 is curved toward a dust box (not shown), and a blow nozzle 32 is installed in this curved portion so as to point toward the dust box. It is connected.

The main weft insertion nozzle 11, the blow nozzle 27, the weft introduction duct 28, the air guide 29, and the suction pipe 31 are all mounted on the slay, and swing integrally as the slay swings. Each of these members 11.27, 28,
A weft take-up motor 33 is located behind the swing area of 29° and 31.
An air cylinder 35 is disposed facing downward directly above a drive roller 34 which is operatively connected to a weft take-up motor 33. The drive rod has a driven roller 36.
is rotatably supported opposite the drive roller 34, and can be pressed against the drive roller 34 by the protruding operation of the air cylinder 35.

Weft insertion main nozzle 11 and blow nozzle 27°32
are both connected to the pressure air supply tank via two-way valve type electromagnetic valves V7+V8°V9, and the air cylinder 35 is connected to the pressure air supply tank via a three-way valve type electromagnetic pulp V1o. . As shown in Fig. 7, each tm valve v1~V10% motor 2, 14, 33
．． M and the electromagnetic solenoid 7 are commanded and controlled by a control computer C that is separate from the loom control computer. The control computer C includes yarn breakage sensors 9, 26, weft detectors 25.
30 and the winding sensor 13, the electromagnetic pulps Vt to VIO are controlled to open and close, and the motors 2, 14, 33 . M and! Controls the magnetic solenoid 7.

FIG. 9 is a flowchart showing a yarn feeding processing program, and the yarn feeding processing work will be explained below according to this flowchart.

1 and 2 show the weft path of the weft yarn Y during operation of the loom, and the weft yarn Y passes through the yarn guide hole 17a of the yarn guide forming body 17. When the weft yarn Y is cut between the weft cheese 3 and the main nozzle for weft insertion 11, the yarn breakage sensor 9 or 26 detects this yarn breakage, and the control computer C
sent to.

In response to this yarn feeding error detection signal, the control computer C sends a loom stop signal to the loom control computer, and the loom control computer issues a loom stop command. As a result, the main weft insertion nozzle 11 on the slay stops near the front position of the woven fabric. After the loom is stopped, the loom control computer instructs the loom to be reversed by a predetermined amount, and the main weft insertion nozzle 11 is moved to the most retracted position (threading position) in the swing area.

Following the transmission of the machine stop signal, the control computer C activates the solenoid valve v3. Command to open v4. As a result, the blow nozzle 16.21 blows the yarn from the yarn removal section 6b to the yarn feeding tube 1.
An air flow is generated via the dust tubes 18 and 19 through the dust pipes 18 and 19.

When yarn breakage occurs between the weft length measuring and storage device 5 and the weft insertion main nozzle 11, the yarn breakage sensor 9 detects the presence of the weft, and the control computer C detects the presence of the weft from the winding sensor 13 based on this detection information. Based on the winding amount detection information of
determines the selection of operation performance. When the amount of thread to be wound has reached a predetermined amount, the control computer C instructs the electromagnetic solenoid 7 to be energized, and if the amount of thread to be wound has not reached the predetermined amount, the control computer C instructs the motor M to operate. .

The rotation of the motor M rotates the winding tube 5a, and the weft is wound on the winding surface 5b. When the amount of winding yarn reaches a predetermined amount, the control computer C commands the motor M to stop operating, and also commands the electromagnetic solenoid 7 to be energized, and the locking pin 7
a is separated from the bobbin winding surface 5b.

After the locking pin 7a is separated from the bobbin winding surface 5b, the control computer C instructs the motor 14 to operate in forward and reverse directions, and the bobbin wandering arm 14a moves from the standby position indicated by the solid line in FIG. 1 to the position indicated by the chain line. and returns to the standby position. As a result, the wound yarn on the yarn winding surface 5b is removed from the yarn winding surface 5b onto the yarn removal section 6b. The tip of the weft yarn Y1 is blown into the yarn feeding tube 15, and the tip of the weft yarn Y1 is introduced into the dust tube 18.19 by the air flow inside the yarn feeding tube 15.

Next, the control computer C! The magnetic valve v6 is commanded to open, and as shown in FIG. 6, the transfer guide 24a is moved upward from the standby position shown by the solid line to the threading position shown by the chain line. The weft Y, which is being pulled toward the dust box 20 by the blowing action of the blow nozzle 21, is the transfer guide 24
As a result of the upward movement of the yarn a, the yarn rests on the yarn receiving recess 24b, and the detection lever 25a of the weft yarn detector 25 rotates in the ON direction. In response to this ON signal, the control computer C turns on the electromagnetic valve v.
7 is commanded to open, and the main weft insertion nozzle 11 injects water. As a result, the entrance 11a of the main nozzle 11 for weft insertion
A suction flow is generated in the weft yarn Yl on the transfer guide 24a arranged near the inlet 11a.

is subjected to the action of the main nozzle 11 for inserting cotton.

The control computer C commands the opening and closing of the electromagnetic valve v5 in response to the ON signal, and the cutter 22 performs a cutting operation. This cutting operation trims the tip of the weft yarn Y1 and also removes it from the jetting action of the blow nozzle 21. The tip of the released and trimmed weft yarn Y1 is transferred to the main nozzle for weft insertion 11 by the suction action of the main nozzle for weft insertion 11.
It is sucked into the body. ! The weft yarn Y1 introduced into the main nozzle for weft insertion 11 is blown out from the main nozzle for weft insertion 11, and the tension applied to the weft yarn Y by the strong blowing force of the main nozzle for weft insertion 11 moves the weft yarn Y1 to the yarn feeding pipe 15. from the thread guide hole 17a through the slit 15a.
Move to.

In the case where the transfer from the winding yarn removal section 6b to the dust pipe 19 fails, the weft yarn detector 25 is not turned ON, and the ON signal of the weft yarn detector 25 is not inputted to the control computer C. is determined to be a weft transfer failure,
Commands to close the electromagnetic valve v6 and demagnetize the electromagnetic solenoid 7. As a result, the transfer guide 24a returns to the standby position, and the locking pin 7a engages with the thread winding surface 5b. and,
If the number of threading failures does not reach the set number of times N, the control computer C controls the prediction (ff) on the weft length measuring and storage device 5.
The subsequent processing operations are carried out again from l@, and when the number of threading failures reaches the set number N, an alarm is commanded from the alarm device 37.

The control computer C instructs the alarm device 37 to issue an alarm when the number of threading failures reaches the set number N, but the removal operation of the thread removal arm 14a ensures that the thread is removed from the thread winding surface 5b. Increase. Further, the weft yarn Y1 removed onto the winding yarn removal section 6b is transferred through the yarn feeding tube 15 by the jet action of the transfer blow nozzle 16, but the weft yarn Y1 passes through the yarn feeding tube 15 in a dense state. 7) There is no protrusion from 15a, and the dust pipe 19 is removed from the winding yarn removal section 6b.
The success rate of weft transfer to is extremely high. Therefore, removal of the wound yarn and transfer to the main nozzle 11 for weft insertion are a prerequisite for successful thread passage to the main nozzle 11 for weft insertion! This is achieved by relatively simple control such as excitation of the magnetic solenoid 7, forward/reverse operation of the motor 14, and opening of the electromagnetic valve v3.

The weft yarn Y1 passed from the yarn feeding tube 15 to the dust tube 19 is guided by the transfer guide 24a to the vicinity of the entrance 11a of the main nozzle 11 for weft insertion, and is guided to the vicinity of the entrance 11a while receiving the jetting action of the blow nozzle 21. Guided weft Y
1 is reliably transferred to the optimum threading position. The weft yarn Y1 transferred to the optimal threading position is trimmed to a predetermined length by the cutter 22, and the excess tip of the weft yarn Y1 is discharged to the dust box 20. Therefore, the insertion of the weft Y1 into the main weft insertion nozzle 11 is highly reliable.
The transfer action by the transfer guide 24a and the cutting by the cutter 22, together with the efficient transport action within the yarn feeding tube 15, ensure the reliability of threading the yarn into the main nozzle 11 for weft insertion.

The transfer guide 24a and the cutter 22, which enhance the reliability of threading, are driven by air cylinders 24, 23, which are the simplest linear actuators, making it easy to simplify the mechanism and drive control. Such simplification can improve driving reliability and shorten processing time.

During normal operation, the weft drawn out from the weft measuring and storage device 5 by the jetting action of the main nozzle 11 for weft insertion passes through the thread guide hole 17a, but due to the unwinding action of the wound thread, the weft thread passes through the thread guide hole 7a. Turn in the pull-out and unwinding direction (counterclockwise in Fig. 4). However, as shown in FIG. 4, by creating a difference in height between the left and right corners of the connection between the thread guide hole 17a and the slit 17b, the thread can be prevented from slipping out from the thread guide hole 17a to the slit 17b. Ru. Therefore, the yarn guide hole 17a suppresses ballooning and prevents interference between the weft yarn on the weft path between the weft length measuring and storage device 5 and the weft insertion main nozzle 11 and the yarn feeding tube 15 forming the yarn feeding path. The presence of the yarn guide hole 17a makes it easy to set the yarn feeding route. Although the thread guide hole 17a that brings about such facilitation is in a fixed position,
Due to the presence of the slit 17b, the yarn movement between the inside of the yarn feeding tube 15 and the yarn guide hole 17a is performed by the jetting action of the weft insertion main nozzle 11. In other words, the weft can be easily switched from the yarn feeding path to the normal weft path without using a special moving mechanism, and an appropriate yarn feeding path can be set for yarn feeding processing while avoiding complication of the mechanism. Settings are achieved.

The tip of the weft yarn Y1 introduced into the main nozzle for weft insertion 11 is blown out from the main nozzle for weft insertion 11;
! The weft yarn is forcibly inserted into the introduction port 28a of the weft introduction duct 28 by the injection action of the blow nozzle 27 when the magnetic valve v7 is opened. Then, the tip of the weft yarn yt is blown out from the outlet 28b of the weft introduction duct 28 toward the air guide 29, passed through the air guide 29, and blown into the suction pipe 31, and the blow nozzle 32 is opened by opening the electromagnetic valve v9.
is transferred to the jet action of

The tip of the weft Y1 is located at the weft detector 30 inside the suction pipe 31.
When the position has been reached, the control computer C continues to carry out subsequent yarn feeding error processing based on the weft presence detection information from the weft yarn detector 30.

If threading to the main weft insertion nozzle 11 fails, the tip of the weft Y1 does not reach the position of the weft detector 30, but the control computer C receives the weft presence detection information from the weft detector 30. If it is not obtained within the set time, the solenoid valve v4. v7゜V9. The main nozzle for weft insertion 11 is commanded to close V9 and demagnetize the electromagnetic solenoid 7.
Then, the blowing nozzles 21, 27, and 32 stop spraying, and the locking pin 7a engages with the bobbin winding surface 5b. The control computer C then instructs the alarm device 37 to issue an alarm.

When the threading to the suction pipe 31 is successful, the control computer C activates the electromagnetic valve v4. based on the weft presence detection information from the weft detector 30. v7. A command is given to close the VB and demagnetize the electromagnetic solenoid 7, and the jets from the main weft insertion nozzle 11 and the blow nozzles 21 and 27 are stopped, and the locking pin 7a engages with the bobbin winding surface 5b. Then i
i Commands the opening of the magnetic pulp VtO, and the air cylinder 35 is operated to protrude. As a result, the driven roller 36 is joined to the drive port roller 34, and the weft yarn Y1 is held between both rollers 34 and 36.

After the rollers 34, 36 are connected, the control computer C commands the operation of the motor M, and the thread-wrapped tube 5a rotates. As a result, the weft Y is wound onto the winding surface 5b of the weft length measuring and storage device 5, and when the pre-wrap amount reaches a predetermined amount, the control computer C controls the weft Y based on the pre-wrap information from the winding sensor 13. command to stop the operation of motor M. This plan WI@
After that, the control computer C instructs the weft take-up motor 33 to operate. As a result, the weft Y1 is taken up by both rollers 34 and 36, and due to this take-up tension, the weft Y1
are cut and separated by the fixed blade 11b on the main nozzle 11 for weft insertion. The cut pieces are picked up by both rollers 34 and 36 and discharged by the blow nozzle 32 into a dust box (not shown).

When all the cut pieces of the weft yarn Y1 pass through the air guide 29, the weft yarn detector 30 detects no weft yarn, and in response to this, the control computer C instructs the weft yarn take-up motor 33 to stop operating, and the tm valve vl (+ As a result, the operation of the weft take-up motor 33 is stopped, the air cylinder 35 is retracted, and the driven roller 36 is moved to the drive roller 3.
Move away from 4.

Next, the control computer C commands the closing of the tm pulp V9, and the air injection from the blow nozzle 32 is stopped.

Thereafter, the machine rotates to the starting position and prepares for restarting the machine.

When a yarn breakage occurs between the weft cheese 3 and the weft length measuring and storage device 5, the yarn breakage sensor 9 detects the absence of the weft, and the control computer C controls the weft tip from the weft cheese 3 based on this detection information. Drawer and weft length measurement storage device! Execute the threading program to 5. That is, electromagnetic pulp v
1. v2. V3 is opened to inject the blow nozzles 4 and 10, and the weft unwinding motor 2 is operated to rotate the weft cheese 3. As a result, the weft tip on the weft cheese 3 is peeled off from the circumferential surface of the weft cheese 3 toward the inside of the weft guide tube 12, and the inlet 5C of the weft length measuring and storage device 5 is injected by the blow nozzle 10 for weft insertion. inserted into.

The weft tip inserted into the inlet 5C blows out from the thread winding tube 5a, but if the weft tip fails to be peeled off from the circumferential surface of the weft cheese 3, the yarn breakage sensor 9 detects the presence of the weft. If the yarn breakage sensor 9 does not detect the presence of a weft within the set time, the control computer C stops the operation of the weft unwinding motor 2 and activates the electromagnetic valve Vl.
, V2. The command is given to close Va, Va, the rotation of the weft cheese 3 is stopped, and the blow nozzles 4, 10, 16.2 are
1 injection stops.

The control computer C then instructs the alarm device 37 to issue an alarm.

If threading into the weft length measuring and storage device 5 is successful, the control computer C instructs the weft unwinding motor 2 to stop operating and closes the electromagnetic pulp v1, and then instructs the motor M to operate. The weft passed through the weft length measuring and storage device 5 is blown out from the thread winding tube 5a by the jet action of the blow nozzle 10, and is wound on the thread winding surface 5b in this blown state. When the amount of yarn to be wound reaches a predetermined amount, the control computer C instructs the opening of the electromagnetic valve V2, and performs the yarn feeding process after the yarn removal operation in the same manner as described above.

The present invention is of course not limited to the embodiments described above, and embodiments shown in FIGS. 10 to 13, for example, are also possible.

In the embodiment shown in FIG.
The winding yarn removal arm 14a can be switched between a standby position shown by a solid line and a delivery position shown by a chain line. Therefore, the wound yarn on the yarn winding surface 5b is transferred to the transfer blow nozzle 1 in the yarn feeding tube 15 by the yarn removal arm 14a.
The flame is passed directly to the jetting action of 6, ensuring weft yarn transfer in the yarn feed tube 15.

Further, an auxiliary transfer means for guiding the weft introduced into the dust pipe 18, 19 to the entrance 11a of the main weft insertion nozzle 11 is operated by a motor 38 and a transfer arm 38a, and the yarn at the tip of the transfer arm 38a is The hook portion 38b can enter into the entrance 11a of the main nozzle 11 for weft insertion. Therefore, threading through the main weft insertion nozzle 11 becomes more reliable.

In the embodiment of FIG. 11, a slit 39 is used as an auxiliary transfer means.
A nozzle 39 with a is used, which is connected to a pressure air supply tank via a solenoid valve Vl+. The injection port 39b of the nozzle 39 disposed near the inlet 11a of the main nozzle 11 for weft insertion is directed toward the inlet 11a, and the weft yarn Y1 passed through the nozzle 39 is directed toward the inlet 11a.
The injection of the weft into the main nozzle 11 ensures that the weft is inserted into the main nozzle 11.

Further, if the fixed blade 40 is attached to the entrance of the dust pipe 18, the weft yarn Y1 is cut by the fixed blade 40 due to the yarn tension caused by the jet action of the nozzle 39, and the mechanism becomes even simpler.

In the embodiment shown in FIGS. 12 and 13, a weft transfer arm 43 is attached to an endless belt 42 which is driven around by a motor 41, and a weft transfer arm 43 is attached to the top of the cover 6 of the weft length measuring and storage device 5 for removing the winding yarn. A blow nozzle 44 is arranged to face the thread winding surface 5b, and a guide pipe 45 is arranged at the bottom of the cover 6. A suction pipe 46 is arranged opposite to the outlet of the guide pipe 45.
The suction pipe 46 is connected to a blower 47.

The outlet of the guide pipe 45 and the inlet of the suction pipe 46 are set at positions sandwiching the orbit of the yarn hooking portion 43a of the weft transfer arm 43. The wound yarn on the yarn winding surface 5b is removed toward the guide pipe 45 by the jetting action of the blow nozzle 44 for removing the wound yarn, and the weft yarn Y1 is removed to the guide pipe 45.
is sucked and introduced into the suction pipe 46 by the operation of the blower 47.

The thread hooking section 4 rotates by the operation of the motor 41.
3a hooks the weft yarn Y1 and transfers it to the duct pipe 18, 19 side, and the weft yarn yt is transferred to the suction action on the duct pipe 18, 19 side. Note that the thread guide 48 is open at the bottom.

The configuration in which the winding yarn is removed by the jetting action of the blow nozzle 44 is simpler than a mechanical removal mechanism, and is more reliable than the belt-driven weft transfer mechanism or the jetting air method.

[Effects of the Invention] As described in detail above, in the present invention, the winding yarn on the weft length measuring and storage device is removed by the winding yarn transfer means, and is delivered to the weft yarn transfer means, and the yarn is transferred to the weft insertion main nozzle side by the weft yarn transfer means. The tip of the transferred weft is trimmed and the auxiliary transfer means guides the weft to the entrance of the main nozzle for weft insertion, so that the weft can be transferred from the weft length measuring and storage device side to the main nozzle for weft insertion. This provides an excellent effect in that the transfer is reliable, and an appropriate yarn feeding path can be set while simplifying the mechanism and operation, which leads to shortening the yarn feeding processing time.

[Brief explanation of drawings]

1 to 9 show an embodiment embodying the present invention.
The figure is a plan sectional view showing the weft guiding state during operation of the loom, Figure 2 is a side sectional view of the same state as Figure 1, and Figure 3 is A--A in Figure 2.
FIG. 4 is an enlarged sectional view taken along the line B-B in FIG. FIG. 7 is a side sectional view showing the state in which the weft has been transferred to the point at which the weft thread is joined to the take-up roller pair, FIG. 8 is a block diagram, and FIG. 9 (a) to (e) is a flowchart showing the yarn feeding processing program, FIG. 10 is a side sectional view showing another example, FIG. 11 is an enlarged side sectional view of main parts showing another example, and FIG.
．． FIG. 13 shows another example, FIG. 12 is a plan sectional view, and FIG. 13 is a side sectional view. A motor 14 and a winding removal arm 14a constituting a winding transfer means, a yarn feeding tube 15 and a transfer blow nozzle 16 constituting a weft transport means, and a cutter 2 as a cutting means.
2. Air cylinder 24 and transfer guide 24a constituting auxiliary transfer means, weft Y1°

Claims (1)

[Scope of Claims] 1. A jet that measures and stores the length of the weft drawn out from the weft cheese in a winding-type weft length measurement and storage device, and injects and inserts the measured and stored weft from a weft insertion main nozzle. In the room, a weft transfer means has a yarn feeding path on a path separate from a normal weft path for introducing the weft pulled out from the yarn winding tube of the weft length measuring and storage device into the weft insertion main nozzle, and the weft length measuring and storage device a winding transfer means for removing the upper winding yarn and delivering it to the weft transport means; a cutting means for trimming the tip of the weft transferred to the weft insertion main nozzle side by the weft transport means; A yarn feeding and processing device in a jet loom, comprising an auxiliary transfer means for transferring and guiding the weft yarns to the entrance of a main weft insertion nozzle.