JP2009209505A - Weft-insertion-condition display method and weft-insertion-condition display apparatus for loom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weft-insertion-condition display apparatus which has a display function for graphically displaying statistics regarding weft insertion conditions in a loom along a time axis and which allows an operator to easily determine the cause of abnormality when there is an abnormality in the statistics. <P>SOLUTION: The weft-insertion-condition display apparatus (20) calculates statistics (average, maximum and minimum values, and standard deviation) regarding weft arrival times detected in each of predetermined sampling periods on the basis of the detected weft arrival times, stores the statistics that are sequentially calculated during a weaving operation in time series, and graphically displays the stored statistics in time series along a time axis. An occurrence status of stoppages of the loom that have occurred in each of the predetermined sampling periods is displayed such that the number of stoppages can be visually recognized along the same time axis as the time axis along which the statistics are graphically displayed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention provides a graphic method for displaying a statistical value related to a weft insertion situation in a loom and an occurrence state of a stop on a time axis, and enables a determination of the cause of the stop from the abnormality of the statistical value and the occurrence state of the stop And a display device thereof.

Patent Document 1 discloses, as a “weaving machine weft insertion status display device”, that a statistical value related to the weft insertion situation is graphically displayed as a time series on the time axis. According to the technique of Patent Document 1, the change over time of the statistical value of the reaching angle of the weft yarn at the time of weft insertion can be visually recognized by a graphic display within a predetermined sampling period. It is possible to confirm whether or not an abnormality such as a variation occurs in the weft arrival angle.

In addition to the above display, Patent Document 1 describes that the occurrence status of a weft insertion failure is displayed on the same time axis in order to identify the cause of the weft insertion abnormality.

However, the technique of Patent Document 1 is such that it displays whether or not a weft insertion defect has occurred in each sampling period, and the type of the weft insertion defect. There is only.

By the way, when an abnormality is found in the statistical value of the weft arrival angle as a result of the graphic display, it is preferable to identify the cause early. For example, when the cause is a root cause such as a weft (yarn feeder) to be used or an abnormality in a weft insertion device, it is necessary to deal with it early so that the same situation is not repeated. Therefore, it is desirable that when the statistical value is abnormal as described above, the cause can be easily determined.

In addition, when the abnormality of the said statistical value has generate | occur | produced continuously from the certain time during weaving, it can discriminate | determine that the cause is based on the above root causes. However, when the above statistical value abnormality occurs temporarily instead of continuously, various causes are considered, and it is difficult to determine the cause. However, even if the occurrence of the statistical value abnormality is temporary, the cause may be a yarn feeder abnormality or a weft insertion device abnormality. Necessary.

However, since the display device according to the prior art of Patent Document 1 only displays whether or not a weft insertion failure has occurred, in the content display of that level, the cause of the abnormality appearing in the statistical value is determined. As a result, it takes time to determine the cause.
JP 2006-9233 A

Accordingly, an object of the present invention is to provide an abnormality in the above statistical values in a weft insertion status display device for a loom having a display function for graphically displaying the magnitude of a statistical value related to the weft insertion status in the loom on a time axis. In this case, it is possible to easily determine the cause.

Therefore, the present invention calculates statistical values related to the weft arrival time for each predetermined sampling period based on the weft arrival time detected for each weft insertion, and sets the magnitude of these statistics on the time axis. When displaying graphics over time, the occurrence of loom stops occurring during each sampling period is displayed on the same time axis in a state where the number of stops can be visually recognized.

Specifically, the weft insertion status display method for a loom according to the present invention calculates a statistical value related to the arrival time for each predetermined sampling period based on the arrival time of the weft yarn detected for each weft insertion, and weaving The weft insertion status display device for a loom which stores the statistical values sequentially calculated as time passes and displays the magnitude of the stored statistical values over time on a time axis On the same time axis as the size of the statistical value is graphically displayed, the number of stops of the loom that occurred during each sampling period can be visually confirmed. Display with status.

The number of stops is displayed directly on the time axis or on an auxiliary axis parallel to the time axis. Since the auxiliary axis here is displayed with the scale of the time axis as a reference scale, the number of stops on the auxiliary axis is displayed on the time axis. Further, the number of stoppages is displayed with the maximum number of stoppages that can be displayed limited or without the maximum number of stoppages that can be displayed.

The occurrence state of the stop (the number of stops) may be displayed separately for a stop accompanying a weft abnormality and a stop accompanying a warp abnormality. An abnormality in the weft includes an abnormality that includes at least one of a defective weft insertion and a shortage of yarn feed and leads to a loom stop. In a loom where weft insertion is performed using two picktailed yarn feeders, when detecting that a knot between the yarn feeders has been pulled out and stopping the loom to discharge the knot In addition, this stop may be included in a stop accompanying an abnormality in the weft. Further, the warp abnormality includes at least one of warp breakage (ground warp breakage) and ear thread breakage (Leno breakage), and refers to an abnormality that leads to a loom stop. Further, in a loom equipped with a catch cord, a catch cord break may be included in the warp abnormality.

In the weft insertion status display, a partial period on the time axis may be enlarged and displayed on a separate screen, and the occurrence status of the stop may be displayed on the separate screen for each cause of the stop. The period for the enlarged display may be arbitrarily set by designation. The period may be set by specifying the beginning and end of the period, but is not limited to this, and by specifying one time point on the time axis, the period is set based on a preset period. May be set. In other words, it is possible to set a period obtained by adding a predetermined period before and after the designated one time point as an intermediate point, or set the designated one time point as a start point or an end point in advance. A predetermined period may be set. By setting the period in this way, the set period can be automatically enlarged and displayed. In this case, the “period setting” also serves as an “enlarged display operation” at the same time. However, the “period setting” and the “enlarged display operation” can be performed as separate operations. Further, the period for the enlarged display is not limited to a period set arbitrarily based on the time point specified by the operator as described above, but is a specific period, for example, a predetermined period before the current point. The specific period may be enlarged and displayed simply by performing an enlarged display operation without specifying the period. In this case, the “enlarged display operation” also serves as the “period setting” at the same time. Note that the enlarged display is performed on a separate screen, but the display on the separate screen is superimposed on the screen before the enlarged display, displayed in place of the screen before the enlarged display, and aligned with the screen before the enlarged display. A form such as a display is possible. In addition, the above “display by cause of stoppage” does not display roughly according to the stoppage caused by the abnormality of the weft and the abnormality caused by the abnormality of the warp, but the detector (sensor) that detects the cause of the stoppage. ) Displaying the number of stops every time.

Next, the weft insertion status display device for a loom according to the present invention includes a statistical value calculation unit that calculates a statistical value related to the arrival time for each predetermined sampling period based on the arrival time of the weft yarn detected for each weft insertion. A display means for storing the statistical values sequentially calculated over the course of weaving in a time series and displaying the magnitude of the stored statistical values over time on a time axis. The display means can visually check the number of stoppages of the loom that occurred during each sampling period on the same time axis as the size of the statistical value is graphically displayed. A first display function for displaying in a simple state.

The first display function of the display means may be configured to display the stop occurrence state (stop count) separately for a stop accompanying a weft abnormality and a stop accompanying a warp abnormality. Good.

The display means may have a second display function for displaying a part of the period specified on the time axis in an enlarged manner and displaying the occurrence state of the stop during the period for each stop cause. .

According to the present invention, in addition to displaying the time-of-arrival statistics in time series on the time axis, on the same time axis, the occurrence of stoppages for each sampling period is visually recognized by the number of stops. Since it is displayed in a possible state, it is possible to easily determine whether or not the cause is due to the stop of the loom by referring to the number of stops when the statistical value is abnormal.

Specifically, when the loom stops due to, for example, a weft insertion failure or the like, the arrival time tends to be delayed in the weft insertion immediately after restarting. Accordingly, when a plurality of stops occur within the sampling period, this appears as an abnormality in the statistical value of the arrival time. However, in this case, the cause of the stoppage has been resolved at the time of restart, and since it is only temporary at that time, even if statistical values are abnormal, there is little impact on subsequent weaving . Further, when the yarn feeder is switched, the arrival time tends to change abruptly before and after the switching, and the loom stops may occur continuously. However, this case is also temporary at that time and seems to have little effect on subsequent weaving.

Therefore, as a result of confirming the display contents, if it can be easily determined that the cause of the abnormality in the statistical value is due to the stoppage of the loom, it can be determined that the future weaving will not be affected so much and it may be overlooked. On the other hand, if there is no stop for the number of times that affects the statistical value during the sampling period even though there is an abnormality in the statistical value, it can be determined that the cause is not a stop and the weft is Or it can be estimated that the cause is an abnormality of the apparatus.

Thus, according to the present invention, it is possible to easily determine whether or not the cause of abnormality in the statistical value is a stop, and based on this, the cause can be identified in a shorter time.

Because the impact on statistics is different between the stop caused by the weft abnormality and the stop caused by the warp abnormality, the occurrence of the stop (the number of stops) depends on the stop and warp abnormality caused by the weft abnormality. By making it possible to display separately from the stop, it is possible to more accurately determine whether the cause of the abnormality in the statistical value is due to the stop.

When the specified period on the time axis is enlarged and displayed, and the occurrence status of the stop (number of stops) is displayed for each cause of stoppage, it is easier to visually check for abnormal statistical values, Since the cause can be determined in consideration of the specific cause of the stoppage, there is an advantage that the determination can be made more accurately.

FIG. 1 illustrates a fluid (air) jet loom as a loom to which the present invention is applied. As an example, a main part of an air jet loom equipped with a one-color weft insertion weft insertion device 1 is shown. Show. In FIG. 1, the weft 4 is pulled out from the yarn feeder 3 supported by the holder 2, and guided to the inside of the rotating yarn guide 6 of, for example, a drum-type length measuring storage device 5, and the outer periphery of the stationary drum 7. By being wound around the outer peripheral surface of the drum 7 by the rotational movement of the rotary yarn guide 6 while being locked by the locking pin 8 on the surface, the length is measured to the length necessary for one weft insertion, and at the time of weft insertion Is stored.

When the locking pin 8 is driven by the operating device 9 at the weft insertion start timing and retreats from the outer peripheral surface of the drum 7, the weft 4 wound around the outer periphery of the drum 7 is a length necessary for one weft insertion. That's it for the unpacking on the drum 7. The unwound weft 4 is passed through the main nozzle 10 for weft insertion, and is unwound on the drum 7 so that the weft insertion is possible by the injection operation of the main nozzle 10.

The main nozzle 10 wefts a predetermined length of weft 4 into the opening 14 by injecting the pressurized air 12 into the opening 14 of the warp 13 over the injection period at the start of weft insertion. By this weft insertion operation, the weft 4 travels along the weft travel path in the opening 14. The pressure air 12 is set in advance to a pressure value suitable for weft insertion by a pressure adjusting means (not shown).

As described above, the weft insertion device 1 in FIG. 1 is a one-color weft insertion. However, in the case of a multi-color weft insertion, the yarn feeder 3, the length measuring storage device 5, and the main nozzle 10 have a multicolor number. The weft is inserted according to the weft selection order. The main nozzle 10 can also be configured as a double type by arranging two nozzles 1 in series in the direction of the weft 4.

In the process in which the weft 4 travels along the travel path in the opening 14, the plurality of groups of sub-nozzles 11 simultaneously push the pressure air 15 in the weft insertion direction toward the weft 4 travel direction in the weft travel path. By performing relay injection in harmony with the jetting speed or the flying speed of the weft yarn 4, the flying weft yarn 4 in the opening 14 is urged in the weft insertion direction. The pressure air 15 is also set in advance to a pressure value suitable for urging the weft 4 by a pressure adjusting means (not shown).

When the weft 4 is inserted normally by the injection operation of the main nozzle 10 and the sub nozzles 11 of the plurality of groups, the weft 4 is beaten on the pre-weaving 18 of the woven fabric 17 by the beating motion of the reed 16, and the weaving 4 After being woven into the cloth 17, it is cut by the yarn feeding cutter 19 on the weft insertion side and separated from the weft 4 inside the main nozzle 10.

Whether or not the weft insertion is normally performed is detected by the first weft feeler 21 and its sensor 24, the second weft feeler 22 and its sensor 25. The sensor 24 of the first weft feeler 21 faces the weft runway in the vicinity of the woven end portion of the woven fabric 17 on the side opposite to the weft insertion side, and is provided at a position where the weft 4 normally wefted can reach. Therefore, the front end of the weft 4 that is normally inserted is detected. Therefore, according to the sensor 24 of the first weft feeler 21, a weft insertion failure (show topic, ben topic, etc.) in which the tip of the weft 4 does not reach the position of the sensor 24 despite the weft insertion is detected. .

During a predetermined detection period, when the sensor 24 detects the arrival of the weft 4, it generates an output signal corresponding to the arrival. In this case, the first weft feeler 21 generates a yarn signal S1 corresponding to normal weft insertion based on the output signal from the sensor 24, and this yarn signal S1 is used as a weft insertion status display device for a loom according to the present invention. Send to 20. The weft insertion status display device 20 of the loom calculates a statistical value of the arrival time of the weft yarn 4 from the yarn signal S1 for each predetermined sampling period, as will be described in detail later.

However, when the yarn signal S1 is not generated within the predetermined detection period, that is, when the weft insertion failure occurs and the sensor 24 cannot detect the arrival of the weft 4, the first weft feeler 21 is In this case, it is determined that the weft insertion is abnormal, a weft stop signal S2 is output, and this weft stop signal S2 is sent to a loom control device and a weft insertion status display device 20 (not shown).

When receiving the weft stop signal S2, the loom control device (not shown) immediately stops the loom at a predetermined angle. The stop of the loom at this time is a stop due to an abnormality of the weft 4, and corresponds to a display “horizontal stop” in FIG. In addition, the weft insertion status display device 20 of the loom is detected by the first weft feeler 21 in order to display the loom stop status generated during a predetermined sampling period in a visible state, as will be described in detail later. The number of stops due to the weft 4 abnormality is integrated.

Further, the sensor 25 of the second weft feeler 22 has a position further away from the weaving end portion of the woven fabric 17 in the weft insertion direction than the sensor 24 on the opposite weft insertion side. It is provided to detect a weft insertion failure such as a blowout of the weft 4 or a long pick. In a predetermined detection period, when the output signal from the sensor 25 is input, the second weft feeler 22 determines that the weft insertion is abnormal and generates a weft stop signal S3. This weft stop signal S3 is shown in the figure. Not sent to the loom control device and the weft insertion status display device 20 of the loom.

When receiving the weft stop signal S3, the loom control device (not shown) immediately stops the loom at a predetermined angle in the same manner as when receiving the weft stop signal S2. The loom stop at this time is also a stop due to an abnormality in the weft 4, and corresponds to a display “horizontal stop” in FIG. In addition, the weft insertion status display device 20 of the loom is detected by the second weft feeler 22 in order to display the loom stop status generated during a predetermined sampling period in a visible state, as will be described in detail later. The number of stops due to the abnormality of the weft 4 is integrated.

The weft insertion status display device 20 of the loom shows the number of stops due to the abnormality of the weft 4 detected by the first weft feeler 21 and the number of stops due to the abnormality of the weft 4 detected by the second weft feeler 22. In addition to accumulating each separately, the sum of both is accumulated.

On the other hand, abnormalities such as yarn breakage of a large number of warp yarns 13 and yarn breakage of the ear thread 51 for forming a leno structure at the woven end are detected by the dropper device 50 and the ear braiding device 52, respectively. The dropper device 50 has a dropper (not shown) corresponding to the number of warps 13, and each warp 13 is passed through a corresponding dropper to hold each dropper at a predetermined height.

If the yarn breakage occurs in the warp 13 during weaving, the dropper at the yarn breakage position falls, and an electrical closed circuit is formed between the dropped dropper and an electrode (not shown). The dropper drop is detected from the energized state, and a warp stop signal S10 is generated and sent to a loom control device and a weft insertion status display device 20 (not shown).

Further, the ear braiding device 52 forms a leno structure for holding the ends of the weft yarns 4 while twisting the plurality of ear yarns 51 every weft insertion. When thread breakage occurs in the ear thread 51 during weaving, an ear thread sensor (not shown) provided in the ear assembling device 52 detects thread breakage of the ear thread 51 and generates a warp stop signal S11. Is sent to a loom control device and a weft insertion status display device 20 (not shown).

When receiving the warp stop signal S10 or the warp stop signal S11, the loom control device (not shown) immediately stops the loom at a predetermined angle in the same manner as when the weft 4 is abnormal. The stop of the loom at this time is a stop caused by an abnormality in the warp 13 or the ear yarn 51, and corresponds to a display “vertical stop” in FIG. In addition, the weft insertion status display device 20 of the loom is stopped based on the stop signal S10 in order to display the stop status of the loom generated during a predetermined sampling period in a visible state, as will be described in detail later. The number of stops and the number of stops based on the stop signal S11 are separately integrated, and the sum of those stops is integrated.

Next, FIG. 2 shows the internal configuration of the first weft feeler 21 together with the weft insertion status display device 20 of the loom according to the present invention. In FIG. 2, the output signal of the sensor 24 of the first weft feeler 21 is amplified by the amplifier circuit 26 and becomes the input of one input terminal of the comparator 27 as the amplified signal S0. The amplification degree of the amplifier circuit 26 is adjusted in advance by an amplification degree setting unit 28 to an amplification degree suitable for the yarn type. The comparator 27 receives from the other input end a threshold value for identifying the presence of a thread that matches the thread type, and compares the threshold value with the amplified signal S0 of the amplifier circuit 26. The threshold for yarn presence identification is input from the threshold setter 29 as a signal having a level suitable for the yarn type of the weft 4.

At the time of comparison, when the threshold value ≦ the signal level of the amplified signal S 0, the comparator 27 determines that there is a yarn, for example, generates an H level yarn signal S 1, and this is determined by the determination circuit 38 of the weft insertion determination circuit 31. To the one input end of the weft arrival time detection means 30 in the weft insertion status display device 20 of the loom of the present invention. Note that when the threshold value> the signal level of the amplified signal S0, the comparator 27 determines that there is no yarn, and generates an L-level yarn-free S6. In the circuit example of FIG. 2, the amplified signal S0 itself obtained by amplifying the output signal of the sensor 24 is used as a determination target signal for the presence or absence of the weft 4, but a differentiator (not shown) is provided between the amplifier circuit 26 and the comparator 27. Alternatively, the presence or absence of the yarn may be determined based on a differential signal of the amplified signal S0 or an integrated signal obtained over a predetermined detection period by interposing an integrator. In this case, the output signal from the differentiator or the integrator can be handled as a substantial yarn signal.

On the other hand, the encoder 34 connected to the main shaft 33 of the loom generates a signal of the rotation angle θ of the main shaft 33 of the loom, and the timing signal generator 35 that receives the signal of the rotation angle θ receives the weft detection period. For example, when the rotation angle θ is 200 ° to 290 °, a weft insertion detection timing signal S5 that is turned on (H level) is generated, and this is input to the other input terminal of the determination circuit 38, the weft insertion determination circuit 31. It is sent to the reset circuit 36 and the timing setting circuit 37. The signal of the rotation angle θ is also sent to the weft arrival time detection means 30 in the weft insertion status display device 20 of the loom.

The weft insertion determining circuit 31 receives the yarn signal S1 and the weft insertion detection timing signal S5, and when the H level yarn signal S1 is input during the generation period of the weft insertion detection timing signal S5, the weft insertion is normal. Judgment is made and the output at the output end remains at the L level. On the other hand, when the yarn signal S1 remains at the L level during the generation period of the weft insertion detection timing signal S5, the weft insertion determination circuit 31 determines that the weft insertion is defective and sets the output at the output end to the H level. To do.

When receiving the output of the determination circuit 38, the logic signal generator 39 generates the weft stop signal S2 at the falling timing of the signal output from the timing setting circuit 37 after the end angle (290 °) of the weft detection period. This is sent to a loom control device (not shown), and the loom is stopped at a predetermined angle. The determination circuit 38 is reset by the rising timing of the reset signal output from the reset circuit 36 at the end angle (290 °) of the weft detection period, and prepares for the next weft insertion cycle. The logic signal generator 39 is reset by the switch 23 operated by weaving after the cause of the loom stoppage is repaired.

In the above example, the weft insertion determination circuit 31 determines that the weft insertion is normal if the yarn signal S1 becomes H level even once during the generation period of the weft detection timing signal S5. Not limited to. For example, the determination condition for determining normal weft insertion may be that the yarn signal S1 is at the H level at the end of the weft detection timing signal S5, or that the period when the weft detection timing signal S5 is at the H level continues for a predetermined period. The plurality of determination conditions can be appropriately selected according to the yarn type of the weft yarn 4, or two or more can be combined.

The amplification degree set in the amplification degree setting unit 28 and the threshold value set in the threshold setting unit 29 may be appropriately set according to the yarn type (color, thickness, etc.) of the weft yarn 4. Further, in the multi-color weft insertion loom, it is possible to configure the circuit so that the determination condition, the amplification degree, and the threshold value can be selected in accordance with the selection signal of the weft 4. Furthermore, the processing related to the determination of whether the weft insertion is correct by the comparator 27 and the weft insertion determining circuit 31 can be realized by a microcomputer and software processing. In such a process, the amplification degree, the threshold value, and the determination condition may be set via the display unit 41 that is also used as a setting device of the loom.

As shown in FIG. 2, the weft insertion status display device 20 of the loom includes a calculation means 54 in addition to the weft arrival time detection means 30, the statistical value calculation means 40, and the display means 41. The weft arrival time detection means 30 detects the weft arrival time on the rotation angle θ from the yarn signal S1 obtained by detecting the weft 4 on the weft flight path and the signal of the rotation angle θ, and detects the weft arrival time in the cycle (main shaft). 33 within one rotation), the arrival time signal S4 is generated, and this arrival time signal S4 is output to the statistical value calculation means 40.

The arrival time signal S4 is a signal of the rotation angle θ when the weft arrival time (weft arrival time) is one rotation of the main shaft 33. Since the rotation angle θ is proportional to the passage of time, the arrival time signal S4 is also a signal on the time series axis with the elapsed time from the reference rotation angle (0 °) as a scale, for example. The yarn signal S1 may be the amplified signal S0 of the sensor 24 or the amplifier circuit 26.

The statistical value calculating means 40 calculates a statistical value related to the arrival time of the weft 4 for each predetermined sampling period based on the arrival time of the weft 4 detected every weft insertion from the timing signal generator 35. The reference timing signal S7 and the arrival timing signal S4 generated every time the rotation angle (0 °) passes are input, and the number of picks (the number of weft insertions) is counted by counting the number of times the reference timing signal S7 is input. Calculates the weft arrival time statistical value for each sampling period based on the weft arrival rotation angle θ as the weft arrival time input over a preset number of samples (number of picks) sampling period To do.

The statistical values here are the minimum value of the weft arrival time (rotation angle θ when the weft reaches), the maximum value (rotation angle θ when the weft reaches the fastest), the maximum value (rotation angle θ when the latest weft arrives), and the weft arrival. It is a value of 1 or more of the standard deviation of the time, and an average value (rotation angle θ) of the weft arrival time.

The difference between the two values of the maximum value and the minimum value indicates the width of variation, and each value indicates the actual value of the variation range in the sampling period. Since this is an actual value, it is useful for adjusting the loom as much as the range of variation can be seen compared to the standard deviation.

According to these maximum and minimum values, the fluctuation range thereof can be known, which is advantageous in that the pressure of the weft insertion nozzles (the main nozzle 10 and the sub nozzle 11) can be changed, for example, in adjusting the loom. The standard deviation displays the degree of variation numerically and corresponds to the degree of dispersion in the binomial distribution, the so-called peak height. On the other hand, the average value is literally the average value of the weft arrival angle at a predetermined number of picks in one sampling period, for example, 1000 picks, and from this, a rough variation in the weft arrival angle can be seen.

In the process of calculating the statistical value, the number of samplings in one sampling period is selected and set from a plurality of settings on the setting screen. For this reason, the operator selects an appropriate number of sampling picks. Note that the number of samplings herein is the number of measured values of the weft arrival timing based on which the statistical value of the weft arrival timing is calculated during one sampling period. As will be described later, when the number of sampling picks is set to 1000 picks, the statistical value calculation means 40 calculates the statistical values during one sampling period based on the measured values of the weft arrival timing for 1000 picks. . Further, as the stored statistical value, each value corresponding to the number of sampling picks corresponding to one package of the yarn feeder 3 is stored.

The statistical value calculation means 40 receives the weft selection signal S8 from the weft selection signal generator 42 in order to calculate a statistical value based on the data sampled for each weft color, and receives the maximum weft arrival time for each weft color. A display data signal S9 for calculating a minimum value of the weft arrival time, one or more of the standard deviations of the weft arrival time, and an average value of the weft arrival time and displaying these statistical values is displayed on the display means 41. Output.

In the case of multi-color weft insertion, the weft selection signal generator 42 receives the reference timing signal S7, generates a weft selection signal S8 based on a preset weft selection order, and calculates this statistical value. Output to means 40. This weft selection signal S8 is used to operate the weft insertion device 1 (the length measuring storage device 5 or the main nozzle 10) corresponding to one weft 4 selected from a plurality of wefts 4 for multi-color weft insertion. Become.

In addition, the calculation means 54 inputs the weft selection signal S8 and calculates the number of stops for each weft color as well as the weft stop signals S2, S3 and the warp stop signals S10, S11 in each sampling period. In order to display the occurrence status of the loom that has occurred, the number of loom stops is integrated while identifying the cause of the stop, and the display data signal S12 is displayed on the display means 41 in order to display the number of stops. send. In this circuit example, the calculation means 54 is configured as one common to the four signals of the weft stop signals S2, S3 and the warp stop signals S10, S11, but is configured as an individual one for each signal. You can also

The display means 41 receives the display data signal S9 and the display data signal S12 at the end of each sampling period, and based on the data of the display data signal S9, the statistics sequentially calculated by the statistical value calculation means 40 with the progress of weaving. A plurality of values are stored in time series, and the size of the stored statistical value is graphically displayed over time on the time axis of the display screen. Further, the display means 41, based on the data of the display data signal S12, on the same time axis as the time axis for graphic display of the statistical value, The number of stops is displayed in a visible state.

FIG. 3 shows an internal configuration example of the display means 41. In FIG. 3, the display unit 41 includes a storage unit 46, a touch panel screen display 47, a port 48, and a processing unit 49. The port 48 receives a display data signal S9 for displaying a statistical value, a display data signal S12 for displaying the number of stops, and the like, an external statistical value calculating means 40 and a calculating means 54, an internal screen display 47, and a processing unit. Signals and data are exchanged with 49.

The storage unit 46 is rewritable, and stores a plurality of statistical value data of the display data signal S9 and data of the number of stops of the display data signal S12 in association with the sampling number. The storage unit 46 stores a program for controlling the touch panel type screen display 47 functioning as an input device, a program for displaying a statistical value and the number of stops, and other necessary software. .

The screen display 47 graphically displays the magnitudes of a plurality of statistical values over time on the time axis of the display screen based on the display data signal S9, and for graphic display of statistical values based on the display data signal S12. On the same time axis as the time axis, the number of loom stops generated in each sampling period is displayed in a visible state. The screen display 47 is of a touch panel type, and is configured to be able to input display requests, various commands, sample number data, and the like by a touch operation on the display screen. Sample number data and the like are sent to the statistical value calculation means 40 and the calculation means 54 via the port 48.

As will be described later, the screen display means 41 of the weft insertion status display apparatus 20 of the loom has a first display function and a second display function for graphic display. The first display function is a function for displaying the occurrence of the stop separately for the stop accompanying the abnormality of the weft 4 and the stop accompanying the abnormality of the warp 13, and the second display function is a time axis. This is a function of displaying a part of the period specified above in an enlarged manner and displaying the occurrence status of the stop during that period for each stop cause.

The processing unit 49 is constituted by a CPU, a so-called microprocessor, and controls input / output at the port 48 according to predetermined software stored in the storage unit 46, controls the screen display 47, and is a touch panel type. In response to a screen display request from the screen display 47, a plurality of statistical values and the number of stops are read from the storage unit 46, and a graphic display corresponding to the size of the plurality of statistical values and the number of stops are displayed on the screen. Display on the instrument 47.

As described above, the weft insertion status display device 20 of the loom calculates the statistical value, accumulates the number of stops, stores these values, and further displays the size of the stored statistics and the number of stops on the time axis of the display screen. However, this function can also be realized by software processing that is configured by a computer such as a microcomputer.

Next, FIG. 4 shows an example of a display screen by the screen display 47. The display screen of FIG. 4 shows the statistical value and the number of stops for each sampling period of the weaving process on one screen, and on the time axis about the size of the statistical value of the arrival time (arrival timing) of the weft 4 Is displayed as a graph with the horizontal axis (X axis) and the vertical axis (Y axis).

One unit on the horizontal axis is one sample period. The scale on the horizontal axis is the number of picks, and the number of picks is proportional to the time elapsed during weaving. For this reason, the horizontal axis can be said to be a time axis.

The sampling number (the number of picks) in the sampling period can be selected and set by touching the selection button 43 of “32”, “100”, “1000” in the sampling number display frame 57. In FIG. 4, “1000” is hatched, which indicates that the number of samplings in one sampling period is set to 1000 picks.

The display “−” (minus) on the horizontal axis in FIG. 4 indicates that the current time is “0”. Therefore, “−10” is 10 sampling times before the current time of “0”, and indicates the weft insertion time before 10,000 picks by the calculation of 10 × 1000 (sampling number) = 10000. Thus, the graph represents the period of the weaving time of the past sampling number 100 from “0” to “−100” on the horizontal axis, and the total number of picks in this period is 100,000 picks. Become. Such a display period can be arbitrarily moved on the time axis as needed by a touch operation on the scroll button 44 with a triangular mark in the left-right direction.

In the display screen of FIG. 4, of the left and right vertical axes (Y axis), the left vertical axis indicates the arrival time of the weft 4 by (°) of the rotation angle θ, and the right vertical axis indicates the standard deviation. Indicates the size.

In the graph of the display screen of FIG. 4, the broken line graph A is an average of the weft arrival time (weft arrival angle) during 1000 picks with the angle (°) of the left vertical axis on the time axis as a reference scale. The value is displayed graphically. In addition, the discontinuous bar-shaped graph B has a maximum value and a minimum value of the weft arrival time (weft arrival angle) during 1000 picks with the angle (°) on the left vertical axis on the time axis as a reference scale. Are graphically displayed as a state where the lines are connected by a line segment in the vertical axis direction. Furthermore, a broken line graph C shows the standard deviation of the weft arrival time (weft arrival angle) with the right vertical axis as a reference scale on the time axis.

The yarn feeder mark 45 at the top of the display screen indicates the yarn type of the weft 4 being displayed together with the yarn type number. The yarn mark 45 of the yarn type number 1 is hatched, which indicates that the screen display for the yarn type number 1 is displayed. In the case of a multi-color weft insertion loom, the thread type of the weft 4 can be selected on the display screen of the display means 41 by a touch operation on the yarn feeder mark 45, and the weft arrival time of the selected thread type is displayed in a graph. It can also be switched. By the way, the screen display 47 is set to multicolor (color) display, display colors such as graphs (A, B, C) and axes (horizontal axis, left and right vertical axes) are different, or displayed for each thread type. Visibility is further improved if the display is made with different colors at the same time.

Furthermore, in the example of the display screen of FIG. 4, the display means 41 displays the number of stops as the weaving state of the loom above the graph display regarding the statistical value in the screen based on the first display function. The graphic display is divided into a “horizontal stop” due to the abnormality 4 and a “vertical stop” due to the warp 13 abnormality (cutting). Further, the screen display 47 in the display means 41 displays each stop count so that it can be easily discriminated whether it is only once or a plurality of stops, that is, the stop count is displayed in a visible state. Yes. In this display example, the sum (the total number of stops) of “horizontal stop” and “vertical stop” is not displayed, but can be displayed in an appropriate display mode as necessary. Moreover, you may display only the sum of both, without dividing into "horizontal stop" and "vertical stop".

In the example of the display screen of FIG. 4, the display of “horizontal stop” and “vertical stop” is parallel to the time axis (X axis) for displaying the statistical value in a graphic form. On the auxiliary axis corresponding to the scale, the number of stops occurring during the sampling period (1000 picks) is displayed for each sampling period. The time scale (pick) of the auxiliary axis here is a scale of the same interval as the time scale (pick) “−10”, “−20”, “−30”. It can be said that the number of times ("horizontal stop" and "vertical stop") is displayed on the same time axis as the time axis for displaying the statistical values. However, if a margin for display can be secured on the time axis, the number of stoppages can be determined on the time axis without using an auxiliary axis parallel to the time axis (X axis). It can also be displayed directly in the margin.

The “horizontal stop” in FIG. 4 is the sum (total) of the weft stop signal S2 from the first weft feeler 21 and the weft stop signal S3 from the second weft feeler 22. As described above, the content of the “horizontal stop” is due to a poor weft insertion, but may include a stop due to a yarn breakage. In the case of including a stop due to yarn breakage, although not shown, a yarn breakage sensor is installed at the position of one or two or more yarn feeders 3, and signals from these yarn breakage sensors are sent to the first weft feeler. The integration processing is performed in the same manner as the signals of the 21 and the second weft feeler 22.

Further, the “vertical stop” in FIG. 4 is the sum (total) of the stoppage signal S10 from the dropper device 50 and the stoppage signal S11 from the ear setting device 52. A stop by cutting the warp (ground warp) 13 is also called a dropper stop, and a stop by cutting the ear thread (Leno yarn) 51 is also called a Leno cut stop. On looms with catch cords, catch cord breaks are also included in the “Vertical Stop”.

In this way, the display means 41 displays the stop occurrence status in a state in which the number of stop occurrences is visible by the first display function. Thereby, it is possible to easily determine whether or not the cause of the abnormality in the statistical value is due to the stoppage. In addition, since the occurrence state of the stop (the number of stops) is displayed separately for the stop caused by the abnormality of the weft 4 and the stop caused by the abnormality of the warp 13, the influence of the cause of the stop on the statistical value is exerted. By considering the difference, the operator can more accurately determine whether or not the cause of the statistical value abnormality is due to the stoppage.

In the display mode of “horizontal stop” and “vertical stop” in FIG. 4, the number of stops for each sampling period is graphically displayed in a bar line shape, and the number of stops is shown in the auxiliary circle shown in the figure. As can be seen in the enlarged explanatory diagram, it can be visually judged by the number (thickness) of the bar lines. However, in the example shown in the figure, the range that can be displayed within each sample period on the display screen is limited, and it is possible to display up to 3 divisions (3 dots) in the time axis direction, that is, display up to 3 times. It has become. For this reason, even if the number of stops is 4 times or more, the display remains the same as 3 times.

This display mode will be described in detail. In the bar-line graphic image in FIG. 4, when the number of stops is two times or more, the horizontal bar direction (X-axis direction) does not leave a single bar line. ) Are arranged as many times as the number of stops, so that the thickness of the bar is visually changed depending on whether the number of stops is one or more. However, a plurality of bar-line displays may be arranged at intervals, and in that case, the number of stops is confirmed as the number of bar lines.

Specifically, the display range corresponding to each sampling period (1000 picks) is 3 dots (dots) in the X-axis direction (time passage direction), and the display corresponding to one stop (bar line) ) Is a graphic image of 1 dot in the horizontal axis (X-axis) direction and 17 dots in the height (Y-axis) direction. Therefore, in the embodiment of FIG. 4, the display range can display up to three times as the maximum number of stops.

Up to three times can be displayed as the maximum value as described above. The reason for this is that in actual weaving, the same stop cause (horizontal stop or vertical stop) in one sampling period of 1000 picks at maximum. 3), the stoppage of 3 times or more is abnormal in the first place, and there is almost no actual stop, and there is no practical problem.

For “horizontal stop”, the number of stops due to a weft insertion failure that occurs when the selected color is inserted is displayed for each weft color (thread type). For this reason, the number of stops can be recognized by the thread type.

As for the number of stops, the maximum number of stops can be displayed without setting the maximum number of stops as described above, and the actual number of stops can be displayed as it is. The present invention includes both the case where the maximum number of stops is limited and the case where the maximum number of stops is not limited.

Further, FIG. 5 shows an example of an enlarged display screen by the second display function of the display means 41. That is, the display means 41 displays the display of the arrival timing statistical value and the number of stops in FIG. 5 by designating the period on the time axis in the example of the display screen of FIG. Like (a), it has the function (2nd display function) to carry out enlarged display on another screen. In the example shown in the figure, another screen is displayed instead of the screen before the enlarged display. However, this separate screen is overlaid on the screen while the screen before the enlarged display remains. Or may be displayed side by side with the screen before the enlarged display. Further, in the enlarged display shown in the figure, the number of stops indicating the occurrence of stoppage is displayed for each stop cause, that is, for each type of detector (sensor) that detected the stop cause. However, the display period of (a) in FIG. 5 is merely an example, and if the display period on the time axis is narrowed and the scale interval in the X-axis direction is increased, the display period can be displayed in more detail.

In this example, the screen display 47 is a touch panel type, and a portion to be enlarged and displayed on the time axis is set by touching the screen. Specifically, on the time axis, when the operator touches the screen near the middle part of the portion to be enlarged, one corresponding time point is designated, and the designated time point is used as a reference. A period consisting of a preset period before and after the setting is set and enlarged. However, the setting of this period is not limited to specifying the midpoint of the period to be enlarged as the reference time point, but the beginning or end of the period is specified as the reference time point and the user wants to enlarge the display based on it. A period may be set. Also, instead of setting a period to be enlarged based on one designated time point and a preset period, the period is set by designating two time points, the beginning and end of the period. Also good. Furthermore, the specification of the time point (intermediate point, start point, end point) that is the basis for setting the period is not limited to touching the display screen with a touch panel type, and is specified (set) by inputting a numerical value such as a pick number. It may be a thing.

Here, the designation operation (period setting operation) for setting a period also serves as an enlargement display operation at the same time. In other words, enlarged display is automatically performed simply by performing a period setting operation. However, the period setting operation and the enlargement display operation can be performed as separate operations, and further, the enlargement ratio setting can be arbitrarily changed during the enlargement display operation. Further, as described above, the period for the enlarged display is set based on the time point arbitrarily designated by the operator, that is, the period for which the enlarged display is desired can be arbitrarily set, and the display unit 41, a specific period, for example, a predetermined period before the present time as a starting point is set in advance by a set value (past time value or numerical value of the number of past picks), and the period setting operation is not performed. By performing an enlarged display operation, it is also possible to enlarge and display the display in the set predetermined period. In this case, the enlarged display operation simultaneously serves as the period setting operation.

Further, in FIG. 5A, when the legend mark 53 of “Legend” at the upper right of the display screen is touched, a small separate window 58 is displayed on the same screen as shown in FIG. Necessary items are displayed in the window 58. Specifically, in the stop count frame 59 in another window 58, the correspondence between each display symbol representing the stop count displayed in a different display mode and each stop cause is displayed. . In the illustrated example, each cause of stoppage is indicated by the name of a detector (sensor) for detecting the cause of each stop (H1 feeler, H2 feeler, dropper and Reno). Incidentally, the H1 feeler described above corresponds to the first weft feeler 21 and the sensor 24, and the loom stop based on the detection result of the H1 feeler is also called H1 stop. The H2 feeler corresponds to the second weft feeler 22 and the sensor 25, and the loom stop based on the detection result of the H2 feeler is also called H2 stop.

Further, in the reaching angle frame 60 of the separate window 58, the statistical value, that is, the correspondence relationship between each line type for graph display and the maximum value / minimum value, average, and standard deviation is described. In FIG. 5B, the separate window 58 is closed by touching the close button 56 at the lower right. Further, the display screen of FIG. 5A returns to the display screen of FIG. 4 by touching the close button 55 at the lower right.

In this way, the range specified on the time axis is enlarged and displayed, and the occurrence status of the stop is displayed for each cause of the stop, so that it is easy for the operator to visually check the statistical value abnormality. At the same time, since the cause can be determined in consideration of the specific cause of the stoppage, the determination can be made more accurately.

If the operator can easily determine the cause of the statistical value abnormality as a result of the stoppage of the loom as a result of checking the display contents, it can be determined that it will not affect the future weaving so much, and it can be overlooked. . On the other hand, if there is no stop for the number of times that affects the statistical value during the sampling period even though there is an abnormality in the statistical value, it can be determined that the cause is not a stop, and the weft is 4 or an abnormality of the apparatus can be inferred. Thus, according to the present invention, it is possible to easily determine whether or not the cause that appears as an abnormality in the statistical value is a stop, and based on this, the cause can be identified in a shorter time.

2 and 3, the weft arrival time detection means 30, the statistical value calculation means 40, the calculation means 54, and the display means 41 are configured as separate blocks, but they use a computer. It can also be configured as one block. As described above, the function of the weft insertion status display device 20 of the loom can be realized by a program using a computer. Therefore, the weft arrival time detection means 30, the statistical value calculation means 40, and the display means 41 of the weft insertion status display device 20 of the loom can be replaced by a computer input / output means, storage means, calculation (control), and display means. .

As for the number of stops, block graphic images with the same width as the display range corresponding to the sampling period are stacked in the Y-axis direction according to the number of stops, and displayed as a bar graph according to the change in height. Alternatively, the number of stops may be displayed as a number. In this way, it is possible to display a large number of stops without narrowing the displayed time axis range.

The present invention is applicable not only to an air jet loom but also to a water jet loom. Further, the present invention can be applied not only to the fluid jet loom but also to other plain looms such as a rapier loom.

It is explanatory drawing of the principal part of the weft insertion apparatus 1 of a loom. It is a block diagram of the weft insertion status display device 20 of the loom according to the present invention and the first weft filler 21 related thereto. It is a block diagram of the structural example of the display means 41 of this invention. It is explanatory drawing of the example of a display of the statistical value by the display screen of the display means 41 of this invention, and the number of stops. It is explanatory drawing of the example of a part of enlarged display of the display screen of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Weft insertion apparatus of a loom 2 Holder 3 Feed body 4 Weft 5 Measurement measuring storage device 6 Rotating thread guide 7 Drum 8 Locking pin 9 Actuator 10 Main nozzle 11 Sub nozzle 12 Pressure air 13 Warp 14 Opening 15 Pressure air 16 筬 17 Weaving cloth 18 Pre-weaving 19 Feeding cutter 20 Weft insertion status display device 21 First weft feeler 22 Second weft feeler 23 Switch 24 Sensor 25 Sensor 26 Amplifying circuit 27 Comparator 28 Amplification degree setting device 29 Threshold setting device 30 Weft arrival time detection means 31 Weft insertion determination circuit 33 Main shaft 34 Encoder 35 Timing signal generator 36 Reset circuit 37 Timing setting circuit 38 Determination circuit 39 Logic signal generator 40 Statistical value calculation means 41 Display means 42 Weft selection signal generator 43 Select button 44 Scroll button 45 Yarn feed mark 46 Memory 47 Screen display 48 Port 49 Processing unit 50 Dropper device 51 Ear thread 52 Ear assembly device 53 Legend mark 54 Calculation means 55 Close button 56 Close button 57 Display frame 58 Another window 59 Stop count frame 60 Arrival angle frame

A Average line graph B Bar graph connecting maximum and minimum values C Standard deviation line graph θ Rotation angle S0 Amplified signal S1 Yarn signal S2 Weft stop signal S3 Weft stop signal S4 Arrival time signal S5 Weft insertion detection Timing signal S6 No thread signal S7 Reference timing signal S8 Weft selection signal S9 Display data signal S10 Warp stop signal S11 Warp stop signal S12 Display data signal

Claims (7)

Based on the weft arrival time detected for each weft insertion, a statistical value related to the arrival time for each predetermined sampling period is calculated, and the statistical values sequentially calculated with the progress of weaving are stored in time series. In a loom equipped with a weft insertion status display device that graphically displays the size of the stored statistical value over time on a time axis,
On the same time axis as the size of the statistical value is graphically displayed, the occurrence of loom stops occurring during each sampling period is displayed in a state where the number of stops can be visually recognized. Weft insertion status display method of loom characterized by 2. The weft insertion status display method for a loom according to claim 1, wherein the occurrence status of the stop is displayed separately for a stop caused by a weft abnormality and a stop caused by a warp abnormality. The loom of the loom according to claim 1, wherein a part of the period on the time axis is enlarged and displayed on a separate screen, and the occurrence state of the stop is displayed on the separate screen for each cause of the stop. Putting status display method. The weft insertion status display method for a loom according to claim 3, wherein the period can be arbitrarily set. Statistical value calculation means for calculating a statistical value related to the arrival time for each predetermined sampling period based on the arrival time of the weft yarn detected for each weft insertion, and the statistical values sequentially calculated as the weaving progresses In a weft insertion status display device for a loom, comprising: a display means for displaying the magnitude of the stored statistical value over time and graphically displaying the magnitude of the stored statistical value over time;
The display means is a state in which the stoppage of the loom that has occurred in each sampling period on the same time axis as the size of the statistical value is graphically displayed can be visually confirmed. A weft insertion status display device for a loom having a first display function for displaying. The first display function of the display means is configured to be able to display the stop occurrence state separately for a stop caused by a weft abnormality and a stop caused by a warp abnormality. The weft insertion status display device for a loom according to claim 5. The display means has a second display function for displaying a part of the period specified on the time axis in an enlarged manner and displaying the occurrence status of the stop during the period for each stop cause. The weft insertion status display device for a loom according to claim 5.

Images