JPH10251942A - System for dealing with weft abnormality in loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for dealing with weft abnormality with improved operability. SOLUTION: This system is equipped with a display control device C1 which judges whether a weft is broken or not, based on various types of information transmitted thereto, i.e., tension levels of the wefts Y1, Y2, Y3 and Y4 detected respectively by tension detectors 38 to 41, weft selection patterns transmitted from a weft selection control device C2, and loom rotational angle transmitted from a rotary encoder 21, and also produces a tension waveform when the weft is broken. The display control device C1 then displays the tension waveform it produced on the screen of a display 48.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft abnormality countermeasure device for a loom.

[0002]

2. Description of the Related Art In Japanese Patent Application Laid-Open No. Hei 1-207441, a tension waveform of a weft inserted in a jet loom is detected, and tension waveforms for a plurality of rotations of a loom are compared.
A method of adjusting the weft insertion timing condition, the nozzle condition, and the like that causes the abnormality when the abnormality of the tension waveform is grasped by this comparison is disclosed.

Japanese Patent Application Laid-Open No. 2-269843 discloses a method of comparing the average tension waveform of a weft inserted in a jet loom with a standard tension waveform, and ascertaining the presence or absence of an abnormality based on the comparison result. .

Japanese Patent Application Laid-Open No. Hei 8-269845 discloses a method of comparing an actual tension waveform with a desired tension waveform and calculating a control curve for adjusting the tension based on the comparison result.

[0005]

Problems to be Solved by the Invention
In the abnormality grasping method disclosed in Japanese Patent Application Laid-Open No. 1 (1999) -1995, the presence or absence of an abnormality is grasped from the degree of dispersion of the tension waveform. However, it is very difficult to specify how much variation is abnormal and how much variation is not abnormal. Japanese Unexamined Patent Publication No. Hei 2-269843, a method for grasping abnormalities,
In the tension adjusting method disclosed in Japanese Patent Application No. 269845, a reference tension waveform such as a standard tension waveform or a desired tension waveform must be grasped in advance. However, it is very difficult to specify which tension waveform is the reference tension waveform.

[0006] It is an object of the present invention to provide a weft abnormality countermeasure device which avoids such troublesome measures as described above.

[0007]

In order to achieve the above object, according to the present invention, a yarn break detecting means for detecting a yarn break of a weft inserted into a weft, and a yarn during one rotation of the loom detected by the yarn break detecting means. A weft abnormality countermeasure device comprising a yarn breakage time measuring means for measuring a breakage time and a measure information output means for outputting measure information based on the information on the yarn breakage time measured by the yarn breakage time measuring means is configured. .

[0008] The information of the yarn breakage time measured based on the yarn breakage detection is the most reliable as a countermeasure for preventing the occurrence of abnormal weft yarns. The handling information output means outputs the handling information based on the most reliable yarn breakage timing information as a base for the handling for preventing the occurrence of the weft abnormality.

In the invention of claim 2, a tension detecting means for detecting the tension of the weft is employed as the yarn break detecting means.
The tension detecting means is suitable for knowing the time of thread breakage.

In the invention according to claim 3, the notifying means for notifying the yarn breakage time measured by the yarn breakage time measuring means is the handling information output means. The yarn breakage time measured by the yarn breakage time measuring means is reported by the reporting means. A measure for preventing the occurrence of an abnormality in the weft yarn can be determined based on the notified yarn break time.

In the invention according to claim 4, the display means is the notification means. The display means is suitable as a means for informing the thread break time. According to the fifth aspect of the invention, the measured times of the thread breakage are displayed by the display means.

[0012] The displayed information on the times of yarn breakage a plurality of times is effective in knowing the cause of the abnormal occurrence of the weft. In the invention according to claim 6, the tension during one rotation of the loom in the weft insertion in which the yarn break detected by the tension detecting means is displayed in a waveform by the display means.

The displayed tension waveform is suitable for grasping the time of yarn breakage. According to a seventh aspect of the present invention, there is provided a weft abnormality countermeasure device including an average tension waveform generating means for generating an average tension waveform of the tension waveform during one rotation of the loom, and the average tension waveform is displayed by the display means of the sixth aspect. I did it.

The comparison between the tension waveform indicating the yarn breakage and the average tension waveform is effective in knowing the cause of the abnormal occurrence of the weft. In the invention of claim 8, the correction information output means outputs correction information for automatically correcting the handling state of the weft handling means which affects the transfer of the weft.

The weft handling means includes a tension applying device for applying tension to the weft, a weft storage device, and the like. The handling state in the tension applying device is, for example, a setting state in which the applied tension can be automatically adjusted, and the handling state in the weft storage device is, for example, a setting state in the automatically adjustable storage amount. The correction means outputs correction information for automatically correcting these setting states, and automatically corrects the setting states.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is embodied in a rapier loom will be described below with reference to FIGS.

In FIG. 1, reference numeral 11 denotes a warp T from the weft insertion start end.
Is a delivery rapier head inserted into the opening of
A receiving rapier head 12 is inserted into the opening of the warp T from the weft insertion end side. Rapier heads 11, 12
Are fixed to the tips of the rapier bands 13 and 14, and the rapier bands 13 and 14 are wound around and coupled to the rapier wheels 15 and 16, respectively. The rapier wheel 15 is reciprocated by a servomotor 17. Rapier wheel 16
Is reciprocated by the servo motor 18. The servo motors 17 and 18 reciprocate in opposite directions.

The delivery rapier head 11 is inserted into the opening of the warp T by the forward rotation of the rapier wheel 15, and the delivery rapier head 11 is retracted from the opening of the warp T by the backward rotation of the rapier wheel 15. The rapier band 13 and the rapier wheel 15 constitute a reciprocating mechanism that performs a reciprocating motion for inserting the transfer rapier head 11 into the opening of the warp T and retracting the rapier head 11 from the opening of the warp T. The receiving rapier head 12 is inserted into the opening of the warp T by the forward rotation of the rapier wheel 16, and is retracted from the opening of the warp T by the backward rotation of the rapier wheel 16. The rapier band 14 and the rapier wheel 16 constitute a reciprocating mechanism that performs a reciprocating movement for inserting the receiving rapier head 12 into the opening of the warp T and retracting the rapier head 12 from the opening of the warp T.

As the rapier wheels 15 and 16 rotate forward, the delivery rapier head 11 and the receiving rapier head 12 enter the opening of the warp T, and as shown by the chain line in FIG. In the center of the weave width. The wefts Y1, Y2, Y3, Y4 conveyed into the opening of the warp T by the transfer rapier head 11 are transferred to the receiver rapier head 12. The return rapier head 11 and the receiving rapier head 12 are retracted from the opening of the warp T by the backward rotation of the rapier wheels 15 and 16, and the weft passes through the opening of the warp T.

The servo motors 17 and 18 are provided with drive circuits 19 and
Under command control of the control computer C via 20.
The control computer C detects a weft insertion speed pattern input and set in advance for each type of weft, loom rotation angle detection information obtained from the rotary encoder 21 that detects the rotation angle θ of the loom, and rotation angles of the servomotors 17 and 18. Based on the rotation angle information obtained from the rotary encoders 171 and 181, the rotation speeds of the servo motors 17 and 18 are feedback-controlled. The control computer C controls the operation of the loom driving motor M for driving the loom.

The weft yarns Y1, Y2, Y3 and Y4 supplied from the weft cheeses 22, 23, 24 and 25 are wound and stored in weft storage devices 26, 27, 28 and 29. Further, the wefts Y1, Y2, Y3, Y4 are guided by the yarn guides 30, 31, 3,
2, 33, tension applying devices 34, 35, 36, 37, piezoelectric sensor type tension detectors 38, 39, 40, 41 and selection levers 421, 422, 423, 4 of the weft selection device 42.
Via 24. The selection levers 421 to 424 are switched between a standby position and an insertion position by a reciprocating drive mechanism (not shown) (for example, a rotary solenoid, a motor, or the like).
The weft selection device 42 is controlled by the weft selection control device C2. The weft selection control device C2 selects and operates one of the reciprocating drive mechanisms based on a preset weft selection pattern, and selects one of the selection levers 421 to 424 to switch between the standby position and the insertion position. It is switched and arranged. The weft arranged at the insertion position is inserted into the warp shedding by the delivery rapier head 11. When the weft is started to be inserted into the opening of the warp T by the delivery rapier head 11,
This weft is cut by the cutter 50.

The tension of the weft yarns Y1, Y2, Y3, Y4 is detected by tension detectors 38 to 41. Tension detector 38
The information on the tension detected by 41 is sent to the display control device C1. As shown in FIG. 2, the display control device C1
Comprises a discriminating circuit 43, a tension waveform storage unit 44, an abnormal tension waveform storage unit 45, an average tension waveform calculation unit 46, and a display control circuit 47.

The determination circuit 43 includes a weft selection control device C2,
The tension detectors 38 to 41 and the rotary encoder 21 are signal-connected. The determination circuit 43 includes the weft selection pattern information obtained from the weft selection control device C2 and the tension detector 3
The presence / absence of yarn breakage is determined based on the tension information obtained from 8 to 41 and the loom rotation angle information obtained from the rotary encoder 21, and a tension waveform is generated for each type of weft. The determination circuit 43 determines the occurrence of a thread break when the detection signals obtained from the tension detectors 38 to 41 have become zero for a predetermined time, that is, when the state of zero tension has continued for a predetermined time.

If the tension information obtained from the tension detectors 38 to 41 does not indicate a thread break, the discrimination circuit 4
Reference numeral 3 denotes a tension waveform storage unit for storing the generated tension waveform for each type of weft.
4 is stored. If the tension information obtained from the tension detectors 38 to 41 indicates a thread break, the determination circuit 43
Outputs a weaving stop signal to the control computer C and stores the generated tension waveform in the abnormal tension waveform storage unit 45. The control computer C stops the operation of the loom drive motor M in response to the input of the weaving stop signal.

The tension waveform storage section 44 stores the latest tension waveform, erases the oldest tension waveform, and stores a predetermined number (plurality) of tension waveforms for each type of weft. The average tension waveform calculator 46 calculates an average tension waveform for each type of weft based on the stored predetermined number of tension waveforms.

When a yarn break has occurred, the determination circuit 43 outputs a display command to the display control circuit 47. Display control circuit 4
A display device 48 displays the average tension waveform and the type of broken weft obtained by the average tension waveform calculator 46.
Display on the screen. The waveform E on the screen of FIG. 2 represents an average tension waveform. The horizontal axis represents the loom rotation angle θ, and the vertical axis represents the tension. The display control circuit 47 is provided with an abnormal tension waveform storage 45.
Is displayed on the screen of the display device 48. The waveform F on the screen of FIG. 2 represents an abnormal tension waveform. In the case shown in the figure, the yarn breakage of the weft Y1 occurs at the loom rotation angle θ = θ1.

A clear key 49 is signal-connected to the display control circuit 47. When the clear key 49 is turned on, the display control circuit 47 deletes the abnormal tension waveform F on the screen of the display device 48 and deletes the content stored in the abnormal tension waveform storage unit 45.

In the first embodiment, the following effects can be obtained. (1-1) The discriminating circuit 43 generates a tension waveform based on the tension information detected by the tension detectors 38 to 41 serving as thread breakage detecting means. The generated abnormal tension waveform is represented by the relationship between the loom rotation angle and the tension, and the abnormal tension waveform includes information on the yarn breakage time. That is, the discriminating circuit 43 and the rotary encoder 21 constitute a thread breakage timing measuring unit that measures the timing of the thread breakage during one rotation of the loom.

From the abnormal tension waveform F displayed on the screen of the display device 48, the time of thread breakage can be grasped. The yarn breakage timing θ1 of the weft Y1 in the case shown in FIG. 2 is near the start of the weft gripping by the delivery rapier head 11. Causes of the yarn breakage at this time include a case where the tension applied by the tension applying device 34 is too strong, and a time when the weft is cut by the cutter 50 is late. The operator can deal with eliminating the cause of the occurrence of the yarn break based on the grasp of the yarn break time. That is, the abnormal tension waveform F displayed on the screen of the display device 48 is the handling information for solving the cause of the thread breakage. The abnormal tension waveform storage unit 45, the display control circuit 47, and the display device 48 constitute a handling information output unit that outputs handling information based on the information on the thread break time measured by the yarn break timing measuring unit.

The information on the yarn breakage time measured based on the yarn breakage detection is the most reliable as a base for taking measures to prevent the occurrence of abnormalities in the weft yarn. The most reliable yarn breakage time information can be obtained easily and accurately as a basis for countermeasures for preventing the occurrence of abnormal weft yarns, and the workability of the countermeasures for preventing abnormal occurrence of weft yarns is improved. (1-2) The yarn breakage time is notified by the display device 48 as the notification means. A measure for preventing the occurrence of an abnormality in the weft yarn can be determined based on the yarn break time notified by the display device 48. The display device 48, which is a display unit, is suitable as a unit for notifying the thread break time. (1-3) The tension detectors 38 to 41, which are tension detecting means,
It is suitable for knowing the time of yarn breakage. (1-4) The tension waveform representing the tension during one revolution of the loom is suitable for grasping the yarn breakage timing. (1-5) The average tension waveform calculation unit 46 functions as an average tension waveform generation unit that generates an average tension waveform of the tension waveform during one rotation of the loom. The average tension waveform E generated by the average tension waveform calculation unit 46 is displayed on the screen of the display device 48 together with the abnormal tension waveform F indicating a thread break. The comparison between the abnormal tension waveform F indicating the yarn breakage and the average tension waveform E is effective in knowing the cause of the abnormal occurrence of the weft. (1-6) In the rapier loom, there is little change in the tension waveform of the weft except for yarn breakage. Therefore, the present invention is suitable for application to a rapier loom.

Next, a second embodiment shown in FIGS. 3 and 4 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. The abnormal tension waveform storage unit 51 in the display control device C3 of this embodiment stores the latest abnormal tension waveform, erases the oldest abnormal tension waveform, and stores a predetermined number (plural) of abnormal tension waveforms. Remember. The display control circuit 52 having the same function as the display control circuit 47 of the first embodiment displays all the abnormal tension waveforms stored in the abnormal tension waveform storage unit 51 on the screen of the display device 48. FIG. 3 shows an abnormal tension waveform F1 representing the first thread breakage, and FIG. 4 shows the predetermined number of abnormal tension waveforms F1 and F1.
2, F3 and F4 are displayed.

A clear key 49 and an all clear key 53 are signal-connected to the display control circuit 52. When the clear key 49 is turned on, the display control circuit 52 deletes the abnormal tension waveform on the screen of the display device 48. All clear key 5
By turning on 3, the display control circuit 52 erases the abnormal tension waveform on the screen of the display device 48 and erases the storage contents of the abnormal tension waveform storage unit 51.

In the second embodiment, the following effects can be obtained. (2-1) The same effect as in the first embodiment can be obtained. (2-2) All the abnormal tension waveforms F1 to F4 displayed on the screen of the display device 48 include information on the thread breakage time. The displayed information on the times of thread breakage is effective in accurately knowing the cause of the abnormal occurrence of the weft.

Next, a third embodiment shown in FIG. 5 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. The display control device C4 according to this embodiment includes:
Abnormal tension information generation circuit 54 and abnormal tension information storage unit 55
And a display control circuit 47. The abnormal tension information generation circuit 54 includes a weft selection controller C2 and tension detectors 38-4.
1 and the rotary encoder 21 are signal-connected.
The abnormal tension information generation circuit 54 includes the weft selection pattern information obtained from the weft selection control device C2 and the tension detectors 38-4.
The presence / absence of a yarn break is determined based on the tension information obtained from the rotary encoder 1 and the loom rotation angle information obtained from the rotary encoder 21. When a yarn break occurs, abnormal tension information is generated for each type of weft. Then, the abnormal tension information generation circuit 54
Outputs a weaving stop signal to the control computer C and stores the generated abnormal tension information in the abnormal tension information storage unit 55.

When a thread break occurs, the abnormal tension information generation circuit 54 outputs a display command to the display control circuit 47. The display control circuit 47 displays the abnormal tension information stored in the abnormal tension information storage section 55 on the display device 48 based on the display command.
Display on the screen. The coordinate system G1 of FIG. 5 represents the abnormal tension information of the weft Y1, and the coordinate system G2 represents the abnormal tension information of the weft Y2. The coordinate system G3 represents abnormal tension information of the weft Y3,
The coordinate system G4 represents the abnormal tension information of the weft Y4. Coordinate system G
The horizontal axis of 1, G2, G3, G4 represents the loom rotation angle θ,
The vertical axis represents tension. The white circles on each coordinate system G1 to G4
It is abnormal tension information represented by the weft tension at the time of yarn breakage and the loom rotation angle. The display content on the screen of the display device 48 includes information on the thread break time. That is, the abnormal tension information generation circuit 54 and the rotary encoder 21 constitute a yarn breakage time measuring unit that measures the time during which the loom breaks during one rotation of the loom.

When the all clear key 53 is turned on, the display control circuit 47 deletes the display contents on the screen of the display device 48 and also deletes the storage contents stored in the abnormal tension information storage unit 55. The display content on the screen of the display device 48 is the handling information for solving the cause of the thread breakage.
The abnormal tension information storage unit 55, the display control circuit 47, and the display device 48 constitute handling information output means for outputting handling information based on the information on the thread break time measured by the thread break time measuring means.

The configuration in which the yarn break times of a plurality of types of wefts Y1, Y2, Y3, and Y4 are collectively displayed is effective in knowing the cause of the occurrence of an abnormality in the weft. Next, a fourth embodiment of FIG. 6 will be described. The same components as those in the third embodiment are denoted by the same reference numerals.

A single coordinate system G5 is displayed on the screen of the display device 48 in this embodiment, and the weft yarns Y1, Y2,
The abnormal tension information for each of Y3 and Y4 is collectively displayed on a single coordinate system G5. The horizontal axis of the coordinate system G5 represents the loom rotation angle θ, and the vertical axis represents the tension. A white circle represents abnormal tension information of the weft Y1 and a black dot represents abnormal tension information of the weft Y2. White triangles indicate abnormal tension information of the weft Y3, and black triangles indicate abnormal tension information of the weft Y4.

In this embodiment, the same effects as in the third embodiment can be obtained. Next, a fifth embodiment of FIG. 7 will be described. The same components as those in the third embodiment are denoted by the same reference numerals.

The abnormal tension information generating circuit 56 in the display control device C5 of this embodiment generates the abnormal tension information as displayed on the screen of the display device 48 for each type of weft. The horizontal axis of the coordinate system on the screen represents the loom rotation angle θ, the left vertical axis represents tension, and the right vertical axis represents the number of thread breaks. The rotation angle of 360 ° for one rotation of the loom is 5 in the illustrated case.
The thread is split and the thread break time is assigned to these five splits. The hatched bars represent the average value of the weft tension at the time of yarn breakage, and the white bars represent the number of yarn breakage occurrences.

The number of occurrences of thread breaks represented by white bars represents abnormal tension information, and the abnormal tension information generating circuit 56 and the rotary encoder 21 are provided with thread breakage timing measuring means for measuring the time during which a loom breaks during one revolution of the loom. Is configured. The display content on the screen of the display device 48 is the handling information for solving the cause of the thread breakage. Then, the abnormal tension information storage unit 5
5. The display control circuit 47 and the display device 48 constitute a handling information output unit that outputs handling information based on the information on the thread break timing measured by the thread break timing measuring unit.

The configuration in which the yarn breakage timing and the number of times of yarn breakage of a plurality of types of wefts are collectively displayed is effective in knowing the cause of the abnormality of the weft. Next, a sixth embodiment of FIG. 8 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.

A countermeasure information generation unit 57 is connected to the abnormal tension waveform storage unit 45 in the display control device C6 of this embodiment by a signal. The handling information generation unit 57 that constitutes the thread breakage time measurement unit and the handling information output unit generates work content information for removing the cause of the abnormal tension generation based on the abnormal tension waveform stored in the abnormal tension waveform storage unit 45. .
The display control circuit 47 displays work content information serving as handling information on a handling information display section 481 on the screen of the display device 48.

The structure for displaying specific work content information is as follows.
It facilitates the work to eliminate the cause of abnormal tension.
Next, a seventh embodiment of FIGS. 9 and 10 will be described.
The same components as those in the first embodiment are denoted by the same reference numerals.

The tension applying device 5 in this embodiment
The magnitude of the applied tension of 9, 60, 61, 62, the switching timing of the selection levers 631, 632, 633, 634 of the weft selection device 63 and the cutting timing of the cutter 64 can be automatically adjusted. A correction control unit 58 is signal-connected to the abnormal tension waveform storage unit 45 in the display control device C7. The correction control unit 58 controls the tension applying devices 59 to 6 based on the abnormal tension waveform stored in the abnormal tension waveform storage unit 45.
2. It outputs correction information for automatically adjusting the switching timing of the selection levers 631 to 634 of the weft selection device 63 and the cutting timing of the cutter 64. This automatic adjustment is performed so as to eliminate the cause of the abnormal tension.

Tension applying devices 59 to 62, weft selecting device 6
3. The cutter 64 is a weft handling means that affects the transfer of the weft, and the magnitude of the applied tension, the switching timing, and the cutting timing represent the handling state of the weft handling means. The correction control unit 58 is a correction unit that outputs correction information for automatically correcting the handling state.

The configuration for performing such automatic correction makes it easier to eliminate the cause of the abnormal tension. In the present invention, a photoelectric sensor or the like may be used as the thread breakage detecting means other than the tension detecting means.

The present invention can be applied to looms other than rapier looms. The inventions other than those described in the claims that can be grasped from the above-described embodiment will be described below together with their effects. (1) A weft in a loom according to any one of claims 4 to 7, wherein a plurality of types of wefts are inserted, and the display means collectively displays the measured yarn breakage times of the respective wefts. Coping device.

This is effective in knowing the cause of the abnormal occurrence of the weft.

[0050]

As described above in detail, according to the present invention, since the handling information is output based on the information on the yarn breakage time, the workability of the handling for preventing the occurrence of an abnormality in the weft can be improved. It has excellent effects.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a first embodiment.

FIG. 2 is a combination diagram of a control block diagram and a screen.

FIG. 3 is a combination diagram of a control block diagram and a screen according to a second embodiment.

FIG. 4 is a combination diagram of a screen on which a plurality of abnormal tension waveforms are superimposed and displayed and a control block diagram.

FIG. 5 is a combination diagram of a control block diagram and a screen showing a third embodiment.

FIG. 6 is a combination diagram of a control block diagram and a screen showing a fourth embodiment.

FIG. 7 is a combination diagram of a control block diagram and a screen showing a fifth embodiment.

FIG. 8 is a combination diagram of a control block diagram and a screen showing a sixth embodiment.

FIG. 9 is a schematic front view showing a seventh embodiment.

FIG. 10 is a combination diagram of a control block diagram and a screen.

[Explanation of symbols]

34, 35, 36, 37, 59, 60, 61, 62: a tension applying device serving as a thread breakage detecting means; 43, a discriminating circuit constituting a thread breakage time measuring means; Abnormal tension waveform storage unit to be configured, 47, 5
2... A display control circuit constituting the coping information output means, 48.
A display device serving as a display means constituting the handling information output means,
54, 56: abnormal tension information generation circuit constituting the thread breakage time measuring means, 55 ... abnormal tension information storage section constituting the measure information output means, 57 ... measure information constituting the thread breakage time measuring means and measure information output means Generation unit 58: a correction control unit serving as a correction unit.

Claims (8)

[Claims] 1. A yarn breakage detecting means for detecting a yarn breakage of a weft inserted into a weft, a yarn breakage time measuring means for measuring a yarn breakage time during one rotation of a loom detected by the yarn breakage detecting means, A weft abnormality countermeasure device for a loom, comprising: countermeasure information output means for outputting countermeasure information based on information on the thread break time measured by the yarn break time measuring means. 2. A weft abnormality handling device in a loom according to claim 1, wherein said yarn break detecting means is a tension detecting means for detecting a tension of a weft. 3. The weft in a loom according to claim 1, wherein said handling information output means is a notifying means for notifying a yarn breakage time measured by said yarn breakage time measuring means. Error handling device. 4. The notification means according to claim 3, wherein said notification means is display means.
A weft abnormality handling device for a loom according to Claim 1. 5. The weft abnormality handling device in a loom according to claim 4, wherein said display means displays the measured times of yarn breakage a plurality of times. 6. The display device according to claim 4, wherein the display means displays a waveform of the tension during one rotation of the loom in the weft insertion in which the yarn break has occurred, detected by the tension detection means. Weft anomaly handling device in loom. 7. An apparatus for coping with abnormality in a weft in a loom according to claim 6, further comprising an average tension waveform generating means for generating an average tension waveform of the tension waveform during one rotation of the loom, wherein said display means displays said average tension waveform. . 8. The correction information output means is correction means for outputting correction information for automatically correcting the handling state of the weft handling means which affects the transfer of the weft.
A weft abnormality countermeasure device in a loom according to any one of claims 2 and 3.