JPH1096142A - Treatment of weft yarn in jet loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the precise practice in sensing of removal of an unnecessary weft yarn such as a mispick. SOLUTION: When a mispick Y4 is caused, air is jet from a picking main nozzle 22, picking auxiliary nozzles 18 and 19 and a stretch nozzle 322 with a controlling computer C. A succeeding weft yarn Y5 connected to the mispick Y4 is pulled in the picking direction by jetting actions of the picking main nozzle 22 and the picking auxiliary nozzle 18. Thereby, the mispick Y4 is peeled from a cloth fell W successively from the side of the picking main nozzle 22 and the mispick Y4 and the succeeding weft yarn Y5 are arranged in a picking passage 281 by the jetting actions of the picking main nozzle 22 and the picking auxiliary nozzles 18 and 19. The presence of the mispick Y4 arranged in the picking passage 281 is sensed with a weft yarn sensor 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft insertion device which injects a weft yarn into a warp opening by an injection operation of a weft insertion main nozzle, and inserts a weft yarn by an injection operation of a weft insertion auxiliary nozzle. The present invention relates to a method for treating unnecessary weft in a jet loom in which weft is captured by a weft capturing means for applying tension.

[0002]

2. Description of the Related Art Methods of removing unnecessary wefts, which are unnecessary wefts, are disclosed in JP-A-62-6938, JP-A-62-22843, and JP-A-1-162847. . JP-A-62-6938,
According to the method disclosed in Japanese Patent Application Laid-Open No. 62-28243, the missed weft insertion error and the succeeding weft yarn are kept connected,
The subsequent weft is inserted by two picks. The weft-inserted subsequent weft is pulled to the non-weft insertion side by the air injection action on the anti-weft insertion side, and the miss yarn is pulled off from the cloth fell by the action of the air injection.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. 1-162847, the weft following the miss yarn is inserted into the weft by an amount smaller than one pick, and the misty yarn is woven by the injection action of the auxiliary nozzle on the inserted weft. It is torn off from the front. However, since it is not detected whether or not the miss yarn has been separated from the weaving cloth, automatic weaving cannot be restarted.

In the method disclosed in Japanese Patent Application Laid-Open No. Sho 62-22843, it is detected whether or not erroneous yarn has been removed by a weft detector which detects whether or not a weft inserted in weaving has arrived. Japanese Unexamined Patent Publication (Kokai) No. 62-28243 describes that a sensor may detect whether or not a miss yarn has been pulled off from a cloth fell.

[0005]

SUMMARY OF THE INVENTION Japanese Patent Application Laid-Open No. 62-2820
In the detection of erroneous yarn removal by the weft detector in Japanese Patent Publication No. 43, since the path of the erroneous yarn removed from the weave is different from the normal weft insertion path, the detection of erroneous yarn removal by the weft detector is accurately performed. Can not be done.

[0006] In the detection of erroneous yarn removal in Japanese Patent Application Laid-Open No. 62-22843, there is no disclosure of the specific installation position of the sensor, and it is not possible to judge the accuracy of the detection of erroneous yarn removal.

SUMMARY OF THE INVENTION It is an object of the present invention to accurately detect the removal of an unnecessary weft such as a miss yarn.

[0008]

For this purpose, the present invention provides a weft insertion device which injects a weft yarn into a warp opening by an injection operation of a weft insertion main nozzle, and inserts a weft yarn by an injection operation of a weft insertion auxiliary nozzle. The invention of claim 1 is directed to a jet room in which the presence or absence of a weft is detected by a weft detector on the weft insertion end side and the weft is captured by a weft catching means for applying tension on the weft insertion end side. The unnecessary main weft is sent to the catching action area of the weft catching means via the weft insertion path at the time of weaving by the injection action of the main nozzle for weft insertion and the auxiliary nozzle for weft insertion, and the presence of the unnecessary weft is detected by the weft detector. An unnecessary weft is captured and eliminated by the weft capturing means.

The unnecessary weft is passed to the weft catching means via the weft insertion path during weaving. Therefore, the unnecessary weft passes through the detection area of the weft detector similarly to the case of detecting the presence or absence of the weft at the time of weaving, and the success or failure of the removal of the unnecessary weft can be reliably grasped.

[0010] In the invention of claim 2, the unnecessary weft is a miss yarn having a wrong weft insertion, and the miss weft is jumped to a catching action area of the weft catching means while being connected to a succeeding weft. The succeeding weft is finally passed to the weft catching means via the weft insertion path during weaving. Therefore, the succeeding weft passes through the detection area of the weft detector similarly to the case of detecting the presence / absence of the weft during weaving, and the success or failure of the removal of the miss yarn is reliably grasped.

In the third aspect of the present invention, the unnecessary weft includes a seam joining a weft of a previously used weft cheese and a weft of a later used weft cheese. The weft including the seam is transferred to the catching action of the weft catching means via a weft insertion path during weaving. Therefore, the unnecessary weft passes through the detection area of the weft detector similarly to the case of detecting the presence or absence of the weft during weaving, and the success or failure of the removal of the seam is reliably grasped.

According to the fourth aspect of the present invention, the weaving machine is a jet room into which wefts are inserted while measuring the length by a winding type weft length measuring and storing device. The weft yarn catching means is caused to fly to the catching action area.

When the weft is cut at the upstream side of the seam by a weft cutting device which cuts the weft every time the weft is inserted during weaving after the seam has passed through the main nozzle for weft insertion, the seam is formed by the weft catching means. The seam can be eliminated by the air injection action. The length of the weft path from the position of the normal seam to the main nozzle for weft insertion is known in advance, and the seam passes through the main nozzle for weft insertion by measuring a predetermined amount of unnecessary wefts including the seam.

The weft path from the installation position of the weft cheese to the weft catching means is long and bent in the middle, and the weft is pulled only by the air jetting action of the weft catching means and the jetting action of the main nozzle for weft insertion. Lack of power to do. The length measuring operation of the winding type weft measuring and storing device brings an action of pulling the unnecessary weft to the weft insertion main nozzle side, and the unnecessary weft is reliably sent to the weft catching means side.

According to a fifth aspect of the present invention, the weaving machine is a jet room into which the weft is inserted while measuring the length by the winding type weft measuring and storing device, and the winding yarn is wound on the weft measuring and storing device. Was used as the unnecessary weft.

The winding yarn on the weft length measuring and storing device of the winding type is transferred to the weft catching means via the weft insertion path during weaving. For this reason, the wound yarn passes through the detection region of the weft detector similarly to the case of detecting the presence or absence of the weft during weaving, and the success or failure of the removal of the wound yarn is reliably grasped.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1, a pair of weft cheeses 11,
12 are provided. In FIG. 1, one weft cheese 11
Weft yarn Y1 is used first, and the other weft cheese 1
2 is the later-used weft cheese. The end of the weft Y1 of the weft cheese 11 and the start of the weft cheese 12 are joined. Residual yarn sensors 13 and 14 are disposed near the peripheral surfaces of the weft cheeses 11 and 12, respectively.
Between the two, a seam sensor 15 is provided. The remaining yarn sensors 13 and 14 detect residual yarn amounts of the weft cheeses 11 and 12, and the seam sensor 15 detects a seam Y3. The remaining yarn amount information obtained by the remaining yarn sensors 13 and 14 and the detection information obtained by the joint sensor 15 are sent to the control computer C.

The weft Y1 drawn from the weft cheese 11
Are passed through a winding type weft length storage device 16. The yarn winding tube 161 is driven to rotate by a winding motor 162 different from the loom driving motor M. The weft fed from the yarn winding tube 161 with the rotation of the yarn winding tube 161 is controlled to be pulled out from the yarn winding surface 163 by engaging and disengaging the locking pin 171 driven by the electromagnetic solenoid 17 and the yarn winding surface 163. You.

In the vicinity of the yarn winding surface 163, a reflection type photoelectric sensor type weft unwinding detector 20 is provided. The unwinding detection signal output from the weft unwinding detector 20 is sent to the control computer C. The control computer C transmits the weft unwinding information from the weft unwinding detector 20 and the rotary encoder 21 for detecting the machine rotation angle. The electromagnetic demagnetization of the electromagnetic solenoid 17 is controlled based on the machine rotation angle information. By this excitation / demagnetization control, the engagement between the winding surface 163 and the locking pin 171 and the separation of the locking pin 171 from the winding surface 163 are performed, and the unwinding and unwinding of the wound weft from the winding surface 163 are performed. Shut-off is performed.

The wound weft on the yarn winding surface 163 is a slay 37.
It is injected into the opening of the warp T by the injection action of the upper weft insertion main nozzle 22 (shown in FIG. 4). The weft yarn Y1 injected into the opening of the warp yarn T has a plurality of auxiliary nozzles 1 for weft insertion.
As shown in FIG. 4, the relay jets 8 and 19 fly in the weft insertion passage 281 on the front surface of the modified reed 28. The weft insertion main nozzle 22 is connected to an air tank (not shown) via a two-way solenoid valve 23 for weft insertion. The weft insertion main nozzle 22 is connected to an air tank (not shown) via a two-way valve type electromagnetic valve 24 for cutting blow. The weft insertion auxiliary nozzles 18 and 19 are connected to an air tank (not shown) via electromagnetic valves 25 and 26.

A blow nozzle 31 is provided immediately below the injection area of the weft insertion main nozzle 22. The blow nozzle 31 is connected to an air tank (not shown) via a two-way valve type electromagnetic valve 29. The injection direction of the blow nozzle 31 intersects with the injection path of the weft insertion main nozzle 22. The blowing action of the blow nozzle 31 removes the weft extending from the weft insertion main nozzle 22 from the cutting action area of the electromagnetic cutter 30.

A weft detector 27 is provided at the end of the weft insertion. As shown in FIG. 4, the detection area 271 of the weft detector 27 is set on the same path as the weft insertion path 281. When the weft insertion is normally performed, the leading end of the weft Y1 reaches the detection area 271 of the weft detector 27. When the weft insertion is performed normally, the control computer C causes the electromagnetic cutter 30 to perform a cutting operation after beating. When the weft detector 27 does not detect the weft within a predetermined period of one weft insertion cycle, the control computer C determines that the weft insertion is abnormal, and activates the electromagnetic valves 23, 25, 26, the electromagnetic cutter 30, and the electromagnetic solenoid 17. The demagnetization control is stopped, and the operations of the loom drive motor M and the winding motor 162 are stopped.

As shown in FIG. 4, a nozzle block 32 is provided upright on the side of the weft detector 27. An introduction recess 321 is formed in the nozzle block 32. The introduction recess 321 is on an extension of the weft insertion passage 281. A stretch nozzle 322 is provided on the lower surface of the introduction recess 321. The stretch nozzle 322 is connected to an air tank (not shown) via an air pipe 33 and a two-way solenoid valve. A capture pipe 35 is attached to the upper part of the nozzle block 32. The capture pipe 35 penetrates so as to be continuous with the introduction recess 321, and the introduction port of the capture pipe 35 and the stretch nozzle 322 face each other. The air jet flow from the stretch nozzle 322 blows into the capture pipe 35 across the introduction recess 321. The opening of the capture pipe 35 opposite to the introduction port is connected to a weft collecting unit (not shown).

The electromagnetic valve 34 is controlled by the control computer C to excite and demagnetize it. The control computer C controls excitation and demagnetization of the electromagnetic valve 34 in accordance with the weft insertion timing. The electromagnetic valve 34 is excited before the weft reaches the introduction recess 321 and is demagnetized before beating. When the weft is inserted normally, the leading end of the weft Y1 is blown into the capture pipe 35 by the air jetting action from the stretch nozzle 322. The weft Y1 blown into the capture pipe 35 is given an appropriate tension by the air flow. That is, the electromagnetic valve 34, the stretch nozzle 322, and the catching pipe 35 constitute a weft catching means for applying tension.

The electromagnetic valve 34 includes a loom driving motor M, a winding motor 162, an electromagnetic cutter 30, the electromagnetic valve 23,
24, 25, 26, 29 and the electromagnetic solenoid 17 are commanded by the control computer C. 5 to 7 are flowcharts showing a weft insertion error processing program,
The control computer C performs the weft insertion error processing according to this program.

When a weft insertion error occurs, a command to stop the operation of the loom drive motor M is issued, the electromagnetic valve 29 is excited, and the blow nozzle 31 ejects. As shown in FIG. 1, the jetting action of the blow nozzle 31 moves the weft Y5 following the missed weft Y4 in which weft insertion has been missed to a position outside the cutting area of the electromagnetic cutter 30. Next, the electromagnetic solenoid 17 is excited, and the locking pin 171 is separated from the thread winding surface 163. When the locking pin 171 separates from the thread winding surface 163, the winding thread on the thread winding surface 163 is locked.
Is released from the locking action. The winding thread released from the locking action of the locking pin 171 is pulled out from the yarn winding surface 163 and unwound by the jetting action of the blow nozzle 31 on the succeeding weft Y5. The weft unwinding detector 20 detects this unwinding, and when one winding has been unwound, the control computer C demagnetizes the electromagnetic solenoid 17. By this demagnetization, the locking pin 171 engages with the thread winding surface 163,
The unwinding of the winding yarn from the yarn winding surface 163 is prevented. Accordingly, as shown in FIG. 2, only one of the winding yarns is weft-inserted via the weft-insertion main nozzle 22.
One weft insertion of the winding yarn is performed until the loom stops. This stop of the loom is immediately before the beating.

Next, the loom driving motor M is rotated in the reverse direction by a predetermined amount, and the opening of the warp yarn T is shifted from the weft front W1 of the woven fabric W to the wrong yarn Y.
4 is the maximum opening that can be removed. The electromagnetic valve 29 is demagnetized, and the injection of the blow nozzle 31 stops. Next, the electromagnetic valves 23, 25, 26, and 34 are excited, and the weft insertion main nozzle 22, the weft insertion auxiliary nozzles 18, 19, and the stretch nozzle 322 eject. The succeeding weft Y5 remains connected to the miss yarn Y4, and the succeeding weft Y5 receives the jetting action of the weft insertion main nozzle 22 and the weft insertion auxiliary nozzle 18. By this injection action, the succeeding weft Y5 is pulled in the weft insertion direction, and the miss yarn Y4 is pulled by the weft insertion main nozzle 2.
It is peeled off from the cloth fell W1 in order from the two sides.

The miss yarn Y4 and the succeeding weft Y5 peeled off from the weave front W1 are injected into the weft insertion passage 281 as shown in FIG. 3 by the injection action of the weft insertion main nozzle 22 and the weft insertion auxiliary nozzles 18, 19. To be placed. The tip end of the miss yarn Y4 arranged in the weft insertion passage 281 is blown into the catching pipe 35 by the jetting action of the stretch nozzle 322.

Next, the electromagnetic valve 23 for weft insertion is demagnetized, and the injection of the main nozzle 22 for weft insertion is stopped. Then, the electromagnetic solenoid 17 is excited, and the locking pin 171 is separated from the thread winding surface 163. When the locking pin 171 is separated from the yarn winding surface 163, the winding yarn on the yarn winding surface 163 is released from the locking action of the locking pin 171 and the winding yarn on the yarn winding surface 163 is released from the weft insertion auxiliary nozzle 18. , 19 and the stretch nozzle 322 eject the yarn winding surface 16.
3 and unwound.

The weft detector 27 detects the presence or absence of a weft in the detection area 271. If the miss yarn Y4 is disposed in the weft insertion path 281, the weft detector 27 will detect the presence of the weft.
1 to detect the presence of a miss thread. Weft detector 27
Detects that there is a miss thread, the electromagnetic solenoid 17 and the electromagnetic valves 25 and 26 are demagnetized, the locking pin 171 engages with the thread winding surface 163, and the weft insertion auxiliary nozzles 18 and
The injection of No. 19 stops. When the weft detector 27 detects no miss thread, the electromagnetic solenoid 17 and the electromagnetic valve 25,
26 is demagnetized, the locking pin 171 is engaged with the thread winding surface 163, and the injection of the weft insertion auxiliary nozzles 18 and 19 is stopped. Then, the control computer C operates the alarm device 36.

When the weft detector 27 detects the presence of a miss yarn, the winding motor 162 operates by a predetermined amount and the yarn winding tube 161 is operated.
Is rotated around the yarn winding surface 163 by a predetermined amount, and the weft is preliminarily wound around the yarn winding surface 163 by a predetermined amount. And electromagnetic valve 3
4 is demagnetized, and the injection of the stretch nozzle 322 stops. Next, the loom drive motor M performs a slow forward rotation by a predetermined amount,
The weft insertion main nozzle 22 on the slay 37 moves to a position corresponding to the weft cut timing by the electromagnetic cutter 30 during weaving. With this transition, the weft extending from the weft insertion main nozzle 22 is arranged in the cutting area of the electromagnetic cutter 30. In this state, the cutting blow electromagnetic valve 24 is excited, and the weft insertion main nozzle 22 ejects. Then, the electromagnetic cutter 30 is demagnetized and the subsequent weft Y5 connected to the weft insertion main nozzle 22 is moved to the electromagnetic cutter 3.
Disconnected by 0. When there is no injection (cutting blow) of the weft insertion main nozzle 22 by excitation of the cutting blow electromagnetic valve 24, the impact of the cutting of the electromagnetic cutter 30 spills over the winding yarn on the yarn winding surface 163, and the yarn winding surface. There is a possibility that the winding yarn on the 163 may fall off from the yarn winding surface 163. Solenoid valve for cutting blow 2
The injection of the weft insertion main nozzle 22 by the excitation of No. 4 prevents such a drop of the winding yarn. After the cutting operation of the electromagnetic cutter 30, the electromagnetic valve 24 for cutting blow is demagnetized, and the injection of the main nozzle 22 for weft insertion stops.

The following weft Y5 is inserted into the main nozzle 22 for weft insertion.
Then, the electromagnetic valve 34 excites for a predetermined time, and the stretch nozzle 322 jets for a predetermined time. After the miss yarn Y4 and the succeeding weft Y5 in the weft insertion passage 281 are drawn into the capture pipe 35 by this injection action,
It is collected by a weft collecting section (not shown). Next, the electromagnetic valves 26 and 34 are intermittently excited, and the weft insertion auxiliary nozzle 19 and the stretch nozzle 322 at the weft insertion end intermittently eject. If there is a weft in the detection area 271 of the weft detector 27, that is, if the erroneous yarn Y4 is left behind due to processing failure, the weft in the detection area 271 will be intermittently ejected by the weft insertion auxiliary nozzle 19 and the stretch nozzle 322. Vibrates. The vibrating weft is reliably detected by the weft detector 27. When there is a weft in the detection area 271 of the weft detector 27, the control computer C activates the alarm device 36.

When there is no weft in the detection area 271,
The control computer C slows down the loom drive motor M by a predetermined amount to shift the loom to a rotational position suitable for restarting weaving.
Then, weaving is resumed.

The first embodiment has the following advantages. (1-1) The miss yarn Y4 is disposed in the weft insertion passage 281 serving as a weft insertion path at the time of weaving by the injection action of the weft insertion main nozzle 22 and the weft insertion auxiliary nozzles 18, 19. The miss yarn Y4 arranged in the weft insertion passage 281 is subjected to the injection action of the auxiliary weft insertion nozzles 18 and 19, and the miss yarn Y4 arranged in the weft insertion passage 281 is
The spraying action received from 8, 19 is the same as the spraying action during weaving. The weft arranged in the detection area 271 connected to the weft insertion passage 281 is vibrated by the ejection action of the weft insertion auxiliary nozzles 18 and 19, and the vibrating weft is reliably detected by the weft detector 27. In the present embodiment, the presence / absence of a miss yarn that has been pulled off from the weave front W1 and disposed in the weft insertion passage 281 is detected by the weft detector 27, and the subsequent weft processing operation is performed according to the detection result. It is determined. Therefore, reliably detecting whether or not the miss yarn Y4 is disposed in the weft insertion passage 281 contributes to selection of appropriate execution of the subsequent weft processing operation. (1-2) The succeeding weft Y5 is finally transferred to the catching action of the stretch nozzle 322 constituting the weft catching means via the weft insertion path 281 which is a weft insertion path during weaving.
Therefore, the succeeding weft Y5 passes through the detection area 271 of the weft detector 27 in the same manner as in the detection of the presence or absence of a weft during weaving,
The success or failure of the removal of the miss yarn Y4 is reliably grasped. (1-3) In the event that the miss yarn Y4 or the succeeding weft Y5 is not removed from the weft insertion passage 281, the intermittent ejection of the weft insertion auxiliary nozzle 19 and the stretch nozzle 322 at the end of the weft insertion will cause the detection area 271 to be removed. The weft oscillates.
The vibrating weft is reliably detected by the weft detector 27. Subsequent weft processing operations are determined according to the detection result of whether or not the weft is left in the detection area 271.
Therefore, it is possible to reliably detect whether the miss yarn Y4 or the succeeding weft Y5 is left in the weft insertion passage 281.
This contributes to the selection of an appropriate execution of the subsequent weft processing operation.

Next, a second embodiment shown in FIGS. 8 to 13 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. The control computer C according to this embodiment has the control functions according to the first embodiment, and executes the joint processing control program shown in the flowcharts of FIGS.

The remaining yarn sensor 13 is used for the previously used weft cheese 11.
Is detected, and this detection information is sent to the control computer C. As shown in FIG. 8, when the remaining yarn amount in the weft cheese 11 becomes equal to or less than a predetermined amount, the control computer C causes the loom driving motor M and the winding motor 1 to rotate.
62, the electromagnetic valves 23, 25, 26, 34,
The excitation / demagnetization control of the electromagnetic solenoid 17 and the electromagnetic cutter 30 is stopped. These stops stop weaving, and the loom stops just before beating.

After the loom is stopped, the control computer C slowly reverses the loom drive motor M by a predetermined amount, and the loom is slowly reversely rotated by a predetermined amount until the slay 37 is located at the rearmost position.
When the slay 37 is retracted to the last retracted position, the opening of the warp T is maximized. After a predetermined amount of reverse rotation of the loom, the electromagnetic valves 25, 26, and 34 are excited, and the weft insertion auxiliary nozzles 18 and 19 and the stretch nozzle 322 eject. Next, the winding motor 162 operates by a predetermined amount, and the weft is wound on the yarn winding surface 163 by n turns, that is, by one pick of weft insertion.

Next, the electromagnetic solenoid 17 is excited, and the locking pin 171 is separated from the thread winding surface 163. And
The weft insertion electromagnetic valve 23 is excited, and the weft insertion main nozzle 22 ejects. By the injection action of the weft insertion main nozzle 22, the winding yarn on the yarn winding surface 163 is pulled out from the yarn winding surface 163 and unwound, and the weft insertion main nozzle 2
2 to the weft insertion passage 281. When the weft unwinding detector 20 detects the unwinding of n windings of the winding yarn, the electromagnetic solenoid 17 and the weft insertion electromagnetic valve 23 are demagnetized, the locking pin 171 is separated from the yarn winding surface 163, and the weft insertion is performed. The injection of the main nozzle 22 stops. As shown in FIG. 9, the weft insertion main nozzle 22 has a weft Y for one pick.
6 is injected. Therefore, when the weft Y6 is inserted without hindrance by the jetting action of the weft insertion main nozzle 22 and the weft insertion auxiliary nozzles 18 and 19, the weft Y6 is inserted.
The leading end of No. 6 passes through the detection area 271 and reaches the ejection action area of the stretch nozzle 322 as in the case of weaving. The leading end of this weft Y6 is detected by the detection area 271 of the weft detector 27.
, The control computer C demagnetizes the electromagnetic valves 25, 26 and 34 and activates the alarm device 36.

When the weft detector 27 detects the arrival of the weft Y6, the control computer C proceeds to the next processing step based on the detection information from the seam sensor 15. FIG.
As shown in (2), the seam Y3 is located outside the detection area of the seam sensor 15, and when the end of the weft Y1 moves toward the weft length storage device 16, the seam Y3 passes through the detection area of the seam sensor 15. When the seam sensor 15 detects the passage of the seam Y3, the electromagnetic valves 25 and 26 are demagnetized, and the injection of the weft insertion auxiliary nozzles 18 and 19 is stopped. Next, the winding motor 162 is operated by a predetermined amount, and the weft is wound on the yarn winding surface 163 by one pick. Then, the electromagnetic solenoid 17 is excited, and the locking pin 171 is separated from the thread winding surface 163. The stretch nozzle 322 is jetting, and the winding yarn on the yarn winding surface 163 is
The yarn is pulled out from the yarn winding surface 163 by the jetting action of the stretch nozzle 322 on the weft Y6 captured by the yarn 5. When the weft unwinding detector 20 detects the number n of unwinding of the wound yarn, the electromagnetic solenoid 17 and the electromagnetic valve 34 are demagnetized, the locking pin 171 is engaged with the yarn winding surface 163, and the injection of the stretch nozzle 322 is performed. Stops.

The weft path length from the seam Y3 to the weft insertion main nozzle 22 via the weft length storage device 16 is 1
If the weft is inserted by one pick from the weft insertion main nozzle 22 after the seam sensor 15 detects the passage of the seam Y3, the seam Y3 is ejected from the weft insertion main nozzle 22. After the seam sensor 15 detects the passage of the seam Y3, the weft is wound on the yarn winding surface 163 by one pick and the weft is inserted from the weft inserting main nozzle 22 by one pick. Therefore, before the injection of the stretch nozzle 322 stops, the seam Y3
Are ejected from the weft insertion main nozzle 22.

The processing operation after the injection stop of the stretch nozzle 322, that is, the processing operation after step S3 in FIG. 12, is the same as the processing operation after step S in FIG. 6 in the first embodiment.

If the seam sensor 15 does not detect the passage of the seam Y3 in step S2 in FIG. 11, the control computer C returns to step S1 in FIG. 10 and repeats the weft insertion of the weft for one pick. If the seam sensor 15 does not detect the passage of the seam Y3 within a predetermined time from the start of the seam processing, the control computer C stops repetition of weft insertion for one pick, and the electromagnetic valve 25, It commands the demagnetization of 26 and 34 and the operation of the alarm device 36.

The following effects can be obtained in the second embodiment. (2-1) The same effects as in the first embodiment can be obtained. (2-2) The weft Y6 including the seam Y3 is transferred to the catching action of the weft catching means including the stretch nozzle 322 and the catching pipe 35 via the weft insertion path 281 which is a weft insertion path during weaving. Therefore, the unnecessary weft Y3 including the seam Y3 passes through the detection area 271 of the weft detector 27 similarly to the case of detecting the presence or absence of the weft during weaving, and the success or failure of the removal of the seam Y3 is reliably grasped. (2-3) The length of the weft path from the position of the normal seam Y3 to the main nozzle 22 for weft insertion is known in advance, and the length of the unnecessary weft Y6 including the seam Y3 is measured by a predetermined amount at a time, and the main weft insertion main yarn 22 is measured. If the jet is emitted from the nozzle 22, the seam Y3 passes through the weft insertion main nozzle 22. Weft cheese 11,
The weft path from the installation position of the stretch nozzle 12 to the stretch nozzle 322 is long and also bends in the middle, so that the air jet action of the stretch nozzle 322 and the main nozzle 22 for weft insertion are performed.
The squirting action alone is not enough to pull the weft. The length measuring operation by the winding type weft length measuring and storing device 16 has an effect of pulling the unnecessary weft including the seam Y3 toward the main nozzle 22 for weft insertion, and the unnecessary weft including the seam Y3 is stretched by the stretch nozzle 322 and the capture pipe 35. To the trapping action area.

It should be noted that when repeating from step S1 in FIG. 10 to step S1 in FIG. 11 and step S4 in FIG.
It is also possible to gradually increase the upward weft winding speed and to shorten the injection interval from the weft insertion main nozzle 22.

Next, a third embodiment shown in FIGS. 14 to 16 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the thread winding surface 163
Is disposed in the vicinity of. The winding number detector 38 detects the number of windings on the yarn winding surface 163. The winding number detector 38 sends the winding number detection information to the control computer C. The control computer C according to this embodiment has the control function according to the second embodiment, as well as FIG. 15 and FIG.
6 executes the winding process control program shown in the flowchart.

When a weaving start signal is input or automatic weaving is restarted by turning on a start switch (not shown), the control computer C determines whether or not the detected number of windings obtained from the winding number detector 38 is the set initial value. . If the detected number of windings has reached the set initial value, the control computer C starts weaving.

If the detected number of turns is not the set initial value, the control computer C determines whether or not the rotation angle of the loom is the angle corresponding to the maximum opening based on the angle detection information from the rotary encoder 21. If it is not in the maximum opening state, the loom drive motor M
Reverses slow. Next, the electromagnetic solenoid 17 is excited, and the locking pin 171 is separated from the thread winding surface 163. Then, the electromagnetic valves 23, 25, 26, and 34 excite for a predetermined time, and the weft insertion main nozzle 22, the weft insertion auxiliary nozzles 18, 19, and the stretch nozzle 322 jet for a predetermined time. By this jetting action, all the winding yarns on the yarn winding surface 163 are pulled out from the yarn winding surface 163 and unwound, and as shown in FIG. 14, the unnecessary weft Y7 including the winding yarn is inserted into the weft. Weft insertion main nozzle 22, auxiliary weft insertion nozzles 18, 19
After the injection of the stretch nozzle 322 for a predetermined time, the electromagnetic solenoid 17 is demagnetized, and the locking pin 171 is moved to the thread winding surface 16.
3 is engaged.

The unnecessary weft Y7 including the winding yarn is fed to the weft detector 27.
If the detection area 271 is not reached, the control computer C activates the alarm device 36. Unnecessary weft Y including winding yarn
7 reaches the detection area 271 of the weft detector 27,
The control computer C operates the winding motor 162 by a predetermined amount, and the weft is wound on the yarn winding surface 163 by a predetermined amount, that is, the set initial value.

The subsequent processing operation, that is, step S in FIG.
The processing operations after step 5 are the same as the processing operations after step S in FIG. 6 in the first embodiment. In the third embodiment, the following effects can be obtained. (3-1) The same effect as in the second embodiment can be obtained. (3-2) If weaving is started with the number of winding yarns on the yarn winding surface 163 not being equal to the set initial value, weft insertion immediately after the start of weaving may be hindered. Therefore, it is desirable to set the number of winding yarns on the yarn winding surface 163 to a set initial value at the start of weaving. In the present embodiment, at the start of weaving, the winding of the weft yarn for the set initial value is performed after all the remaining winding yarns on the yarn winding surface 163 are removed. The winding yarn on the yarn winding surface 163 is transferred to a catching action of a weft catching means including a stretch nozzle 322 and a catching pipe 35 via a weft insertion path 281 serving as a weft insertion path during weaving. Therefore, the wound yarn passes through the detection region 271 of the weft detector 27 in the same manner as in the detection of the presence or absence of the weft during weaving, and the success or failure of the removal of the wound yarn can be reliably grasped.

The present invention is also applicable to a jet loom provided with a yarn supply processing device capable of automatically inserting a weft into the weft insertion main nozzle 22 when a yarn break occurs between the weft insertion main nozzle 22 and the weft cheese. Applicable.

[0052]

As described above in detail, according to the present invention, the unnecessary weft passes through the weft insertion path at the time of weaving by the jetting action of the weft insertion main nozzle and the weft insertion auxiliary nozzle. The weft is captured and eliminated by the weft catching means while detecting the presence or absence of the unnecessary weft by the weft detector, so that the detection of the unnecessary weft is performed in the same manner as the detection of the presence or absence of the weft during weaving. An excellent effect of passing through the detection region of the vessel and reliably grasping the success or failure of the removal of the unnecessary weft is exhibited.

[Brief description of the drawings]

FIG. 1 is a combination diagram of an unnecessary weft processing device and a control circuit thereof according to a first embodiment.

FIG. 2 is a combination diagram showing a state in which a subsequent weft is inserted.

FIG. 3 is a combination diagram showing a state in which an error yarn is peeled off from a weaving cloth.

FIG. 4 is a perspective view showing a weft detector and a weft catching means.

FIG. 5 is a flowchart showing a weft insertion error processing program.

FIG. 6 is a flowchart showing a weft insertion error processing program.

FIG. 7 is a flowchart showing a weft insertion error processing program.

FIG. 8 is a combination diagram of an unnecessary weft processing device and a control circuit thereof according to a second embodiment.

FIG. 9 is a combination diagram showing a state in which unnecessary wefts are inserted.

FIG. 10 is a flowchart showing a joint discharge processing program.

FIG. 11 is a flowchart showing a joint discharge processing program.

FIG. 12 is a flowchart illustrating a joint discharge processing program.

FIG. 13 is a flowchart showing a joint discharge processing program.

FIG. 14 is a combination diagram showing a third embodiment.

FIG. 15 is a flowchart showing a winding process control program.

FIG. 16 is a flowchart showing a winding process control program.

[Explanation of symbols]

11, 12 ... weft cheese, 16 ... weft measuring and storing device, 1
61 ... thread wound tube, 18, 19 ... auxiliary nozzle for weft insertion, 2
2 ... weft insertion main nozzle, 27 ... weft detector, 271
... Detection areas 271, 322 ... Stretch nozzles constituting the weft catching means, 35 ... Capture pipes constituting the weft catching means, Y3 ... Seam, Y4 ... Miss yarn, Y5 ... Following weft,
Y6: weft, Y7: unnecessary weft.

Claims (5)

[Claims] A weft is injected into a warp opening by an injection action of a weft insertion main nozzle, a weft is inserted by an injection action of a weft insertion auxiliary nozzle, and a weft is detected by a weft detector at a weft insertion end side. In the jet loom that detects the presence or absence of the weft and catches the weft by the weft catching means for applying tension at the weft insertion end side, the weft insertion main nozzle and the auxiliary nozzle for weft insertion eject unnecessary weft during weaving. A weft processing method in a jet loom that flies to a catching action area of the weft catching means via a weft insertion path and captures and eliminates unnecessary wefts by the weft catching means while detecting presence / absence of unnecessary wefts by the weft detector. . 2. The weft yarn according to claim 1, wherein the unnecessary weft yarn is a miss yarn that has been misinserted and a weft succeeding the miss yarn, and the miss yarn is jumped to the catching action area of the weft catching means while being connected to the succeeding weft. 3. The method for treating weft yarn in a jet loom according to item 1. 3. The jet loom processing method according to claim 1, wherein the unnecessary weft includes a seam joining a weft of a previously used weft cheese and a weft of a later used weft cheese. 4. A weaving machine is a jet loom in which weft is inserted while measuring the length by a winding type weft measuring and storing device, and unnecessary wefts including the seam are measured by the weft catching means by a predetermined amount while measuring the length. The method for treating weft yarn in a jet loom according to claim 3, wherein the weft yarn is blown to the catching action area. 5. A loom is a jet loom for weft insertion while measuring the length by a winding type weft measuring and storing device. The unnecessary weft is obtained by removing the winding yarn wound on the weft measuring and storing device. The method for treating wefts in a jet loom according to claim 1, comprising: