EP2045382A2 - Procédé d'affichage des informations opérationnelles dans un métier à tisser - Google Patents

Procédé d'affichage des informations opérationnelles dans un métier à tisser Download PDF

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Publication number
EP2045382A2
EP2045382A2 EP08016401A EP08016401A EP2045382A2 EP 2045382 A2 EP2045382 A2 EP 2045382A2 EP 08016401 A EP08016401 A EP 08016401A EP 08016401 A EP08016401 A EP 08016401A EP 2045382 A2 EP2045382 A2 EP 2045382A2
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EP
European Patent Office
Prior art keywords
stoppage
time point
weaving
loom
aggregation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08016401A
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German (de)
English (en)
Other versions
EP2045382A3 (fr
Inventor
Koki Yamazaki
Hideyuki Kontani
Michiyo Takano
Emiko Myogi
Kazufumi Yama
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Tsudakoma Corp
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Tsudakoma Industrial Co Ltd
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Publication date
Application filed by Tsudakoma Industrial Co Ltd filed Critical Tsudakoma Industrial Co Ltd
Publication of EP2045382A2 publication Critical patent/EP2045382A2/fr
Publication of EP2045382A3 publication Critical patent/EP2045382A3/fr
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/005—Displays or displaying data
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/007—Loom optimisation

Definitions

  • the present invention relates to a method for displaying operational information of a loom on a display device, such as a CRT, in association with step numbers of a weaving pattern.
  • the operational information is obtained from stoppage information of the loom.
  • Japanese Unexamined Patent Application Publication No. 2004-100061 describes a method for displaying operational information of a loom. According to this method, when the loom stops during operation, stoppage information including a stop time, details of stoppage (cause of stoppage), and a step number of a weaving pattern is stored. Then, the stoppage information is displayed as the stoppage history in time series in the form of a list. The meaning of the weaving pattern, the step number, and a weaving cycle described below, will be explained in the description of the preferred embodiments section.
  • the stoppage information is simply displayed in time series. Therefore, as the number of stoppages increases, the size of the stoppage information to be displayed in the form of a list increases accordingly.
  • the stoppage of the loom does not always occur at a weaving cycle (weaving step) corresponding to a specific step number. Therefore, if the stoppage information is simply displayed as the stoppage history in the form of a list, as the size of the stoppage information increases, it becomes difficult for an operator to recognize the relationship between the weaving step and the occurrence of stoppage. More specifically, there may be a case where the loom frequently stops at a certain weaving step but the occurrences of stoppage are temporally dispersed. In such a case, according to the above-described method of the related art, a certain step number will be intermittently displayed and it is difficult to check the number of stoppages in association with the weaving cycle.
  • the operator can determine that there is a problem in the weaving operation in that weaving step, for example, in the settings of the operation timing of heald frames and the like for that weaving step. Unless the problem is solved soon, the operating rate will be reduced or the quality of the woven cloth will be degraded.
  • Japanese Unexamined Patent Application Publication No. 9-195145 describes another method for displaying operational information of a loom. According to this method, data regarding the stoppage of the loom (stoppage information) is successively stored. When a display request is issued, the stoppage information obtained in a period designated by the display request is aggregated, the period starting at a start time point and ending at a current time. Then, the result of the aggregation is displayed as the operational information.
  • an object of the present invention is to provide a method for allowing an operator to quickly check the number of stoppages in association with weaving steps.
  • the present invention is applied to a loom which performs a weaving operation by operating weaving elements in accordance with a weaving pattern having a plurality of weaving cycles successively numbered with step numbers, which stores stoppage information including a step number each time the loom stops due to a weaving failure during the weaving operation, and which displays an aggregation result on a display device as the operational information.
  • the aggregation result is obtained by aggregating the stoppage information stored in a designated period from a start time point to a current time point, and the designated period is designated at the time when a display request is issued.
  • the number of stoppages of the loom is aggregated for each of the step numbers to obtain aggregation results for the respective step numbers, and the thus-obtained aggregation results are displayed on the display device in association with the respective step numbers.
  • the number of stoppages can be easily checked in association with the weaving step (step number) from the contents displayed on the display device. Therefore, an adjustment of the weaving elements operated in each weaving step can be quickly made as necessary. As a result, the operating rate can be increased and the quality of the woven cloth can be improved.
  • the aggregation results may be simply displayed, the aggregation results may also be displayed in a certain manner.
  • the aggregation results are displayed on the display device such that the aggregation results are arranged in the order from the aggregation result for the step number corresponding to the largest number of stoppages.
  • step numbers are displayed in the order from the step number corresponding to the largest number of stoppages, the weaving steps corresponding to large numbers of stoppages can be more easily checked and the adjustment can be efficiently made.
  • the stoppage information may further be classified by other elements.
  • the stoppage information is aggregated for each cause of stoppage, and the aggregation results for each cause of stoppage are displayed in association with the respective step numbers.
  • the weaving steps corresponding to large numbers of stoppages can be checked for each cause of stoppage. Therefore, the adjustment can be made by mainly checking the weaving elements relating to the cause of stoppage.
  • an arbitrary time point may be set as an additional start time point so that aggregation results for a period that starts at a time point other than the start time point of the designated period can be displayed.
  • an arbitrary time point is settable as a start time point of an aggregation period for which the number of stoppages is aggregated, and the aggregation results for a period from the arbitrary time point to the current time point can be displayed on the display device.
  • the aggregation results for a period from the start time point of the designated period to the arbitrary time point and the aggregation results for the period from the arbitrary time point to the current time point may be displayed next to each other on the display device.
  • the aggregation results for the periods before and after the arbitrary time point can be compared with each other. Therefore, it can be easily determined whether or not the adjustment has succeeded.
  • the display may be set such that only aggregation results in a fixed period can be displayed, the display may also be set such that aggregation results for a plurality of periods can be selectively displayed.
  • the display device is capable of selectively displaying a plurality of unit reports corresponding to different periods, and displays the aggregation results for a period corresponding to the unit report selected by the display request.
  • the aggregation results of the desired unit report can be checked.
  • a loom according to an embodiment of the present invention is an air jet loom.
  • the loom has a main shaft 1, which is connected to an encoder 2 that detects a rotational angle (crank angle) of the main shaft 1 and outputs a crank shaft signal to a main controller 3.
  • the crank angle signal is used to generate a timing signal for the loom or to drive predetermined actuators.
  • the main controller 3 transmits and receives data to and from a display device 4.
  • the main controller 3 outputs drive command signals and the like to a weft insertion device shown in Fig. 2 , and to other weaving elements, such as a drive motor, a brake device, a shedding device, another weft insertion device, a take-up device, and a warp let-off device, which are not shown in the figure.
  • the main controller 3 causes the above-mentioned weaving elements to execute a weaving operation.
  • a weft yarn 6 is supplied from a weft supply package 5 and is wound around a length measuring drum 8 in a measuring-and-storing device 7 by a predetermined length.
  • the measuring-and-storing device 7 includes the length measuring drum 8, a retaining pin 9, and a solenoid 11 for driving the retaining pin 9, all of which are controlled by the main controller 3.
  • the retaining pin 9 is moved forward and backward at predetermined crank angles so that the weft yarn 6 wound around the length measuring drum 8 is released by a length corresponding to a single pick.
  • the weft yarn 6 is inserted into a warp shed (not shown) through a main nozzle 12 and is caused to flow through the warp shed by air supplied from sub-nozzles 14 disposed so as to face a reed 13.
  • Solenoid valves 15 are provided between the main nozzle 12 and a pressure source corresponding thereto and between the sub-nozzles 14 and a pressure source corresponding thereto.
  • the solenoid valves 15 receive drive signals output from the main controller 3 at predetermined crank angles. Accordingly, the solenoid valves 15 open and close to control the ON-OFF states of the air ejected from the nozzles 12 and 14. As a result, the weft yarn 6 released from the measuring-and-storing device 7 is reliably inserted into the warp shed and conveyed therethrough by the air ejected from the nozzles 12 and 14.
  • H1 and H2 feeler heads 16 and 17 are disposed with a gap therebetween so as to face the reed 13 at a weft-arrival-side end of the reed 13. Outputs from the feeler heads 16 and 17 are input to the main controller 3 through a feeler 18.
  • the feeler heads 16 and 17 are sensors that detect the presence or absence of the weft yarn 6. When it is determined that the weft yarn 6 is present, a yarn signal is output to the feeler 18.
  • the H1 feeler head 16 is used to determine whether or not the weft yarn 6 has been successfully inserted at the end of the weft insertion operation.
  • the H2 feeler head 17 is used to determine whether or not breakage of the weft yarn 6 has occurred in the weft insertion operation.
  • a catch cord 19 is placed between the H1 and H2 feeler heads 16 and 17.
  • the catch cord 19 is used to catch the weft yarn 6 at the leading end thereof.
  • Tension applying means (not shown) and a yarn breakage sensor 21 are disposed at a base end of the catch cord 19 in a warp direction.
  • the yarn breakage sensor 21 outputs a yarn breakage signal to the main controller 3.
  • Warp breakage detectors (droppers) 22 and yarn breakage detectors (not shown) for selvage devices 23 respectively detect breakage of warp yarns (not shown) and selvage yarns 24 and output yarn breakage signals to the main controller 3.
  • the display device 4 which is connected to the main controller 3, includes a display unit 27, such as a CRT or a liquid crystal panel, a setting unit 28 including a keyboard or the like for making various settings, a CPU 29 for performing calculations based on the settings made by the setting unit 28 and controlling the contents displayed by the display unit 27, a memory 31 for storing the calculation results obtained by the CPU 29, and a time-signal generator (not shown).
  • the display unit 27 may have a touch panel that functions as the setting unit 28.
  • operation buttons 26 for issuing commands for starting or stopping the loom, operating the loom in the reverse direction, executing an inching operation, etc., are connected to the main controller 3.
  • a sensor corresponding to the cause of stoppage detects the cause of stoppage and outputs a detection signal.
  • the detection signal is supplied to the CPU 29 in the display device 4 through the main controller 3.
  • the CPU 29 stores stoppage information based on the detection signal in the memory 31, calculates operational information of the loom on the basis of the stored stoppage information, and stores the operational information in the memory 31.
  • the CPU 29 displays the operational information on the display unit 27.
  • the stoppage information is the information based on which the operational information is obtained and includes, for example, the time of occurrence of stoppage and the cause of stoppage. According to the present invention, the stoppage information includes the step number at the time when the cause of stoppage has occurred.
  • the cause of stoppage can be generally classified into weft stoppage and warp stoppage.
  • the weft stoppage is caused by, for example, weft insertion failure such as short pick and bent pick detected by the H1 feeler head 16 (H1 stoppage), weft insertion failure such as weft breakage and long pick detected by the H2 feeler head 17 (H2 stoppage), or failure such as weft breakage at a position upstream of the main nozzle 12.
  • the warp stoppage is caused by, for example, ground warp breakage detected by the droppers 22, catch cord breakage detected by the yarn breakage sensor 21, or selvage yarn breakage detected by the yarn breakage detectors for the selvage devices 23.
  • the operational information includes various values, such as the number of stoppages and the stop time, calculated from the stoppage information.
  • the number of stoppages is displayed in two kinds of forms. More specifically, in a lower section of a display screen on the display unit 27, numbers of stoppages aggregated for each cause of stoppage are displayed. In addition, in a display area 27a in an upper section of the display screen, numbers of stoppages aggregated for each step number in accordance with the present invention are displayed. In the display area 27a, causes of stoppage are indicated at the top as "WEFT" for the weft stoppage and "WARP" for the warp stoppage.
  • the operational information is not limited to the information calculated from the stoppage information as described above, and also includes, for example, the operating rate of the loom, the rotational speed of the loom, and the weaving length. Also in the present invention, the operational information may also include information other than those calculated from the stoppage information as described above.
  • the period for which the number of stoppages is aggregated is basically a period which starts at a specific time point (start time point) in the past and ends at a current time point. This is because the display request is normally issued to check the operational information of the loom at the current time point.
  • the aggregation period may also include a specific period in the past. In other words, the display request may be issued not only when the operational information of the loom at the current time point is to be checked but also when the operational information of the loom in a specific period in the past is to be checked.
  • the above-mentioned specific time point in the past is determined from a period which is set in advance and of which the operational information is to be displayed to check the operational information of the loom.
  • the period which is set in advance and of which the operational information is to be displayed to check the operational information of the loom is a period corresponding to, for example, an operation unit (in the case of three-shift operation, 8 hours as calculated by dividing one day (24 hours) by 3), a unit of hours (for, example, 24 hours backing from the current time point), or a unit of days.
  • the operational information of each unit is generically called a unit report.
  • the unit reports for the above-mentioned units are called a shift report, an hour report, and a day report in the mentioned order.
  • the shift report is the operational information of the loom for the current shift.
  • the hour report is the operational information of the loom for a period backing from the current time point by A hours (A is a set value).
  • the day report is the operational information of the loom for the current day.
  • the above-described specific time point in the past corresponds to the start time point of each unit report.
  • the display device 4 may be capable of selectively displaying any one of a plurality of unit reports. Alternatively, the display device 4 may also be capable of displaying only one of the unit reports.
  • the weaving pattern shows operational states of the weaving elements for forming a single repeat of a weave structure.
  • the operational states of the weaving elements are set for each of a plurality of weaving cycles in the weaving pattern.
  • the weaving cycles are the unit of the weaving operation which is repeated every time the main shaft 1 of the loom rotates one turn.
  • the weaving cycles are numbered in the order of execution, and these numbers correspond to the step numbers.
  • the weaving pattern is set in the main controller 3 by a setting device (not shown) connected to the main controller 3.
  • the main controller 3 operates the weaving elements in accordance with the order of step numbers in the weaving pattern. More specifically, when the operation of the loom is started, the main controller 3 starts counting the number of turns of the main shaft 1 in response to an output from the encoder 2.
  • the main controller 3 controls the operations of the weaving elements in accordance with the operational states set in the weaving pattern for the weaving cycle designated by the step number corresponding to the number of counts.
  • the main controller 3 clears the number of counts and controls the weaving elements in accordance with the settings for the first weaving cycle. Then, the above-described steps are repeated.
  • a sensor corresponding to the cause of stoppage detects the cause of stoppage and outputs a detection signal to the main controller 3. Then, the main controller 3 sets a loom operation signal to an OFF state to stop the loom.
  • the detection signal output from the sensor is also input to the CPU 29 in the display device 4 through the main controller 3.
  • the CPU 29 reads the stoppage information including the step number and the cause of stoppage (kind of sensor) and information regarding the unit report (the time and date of occurrence of the stoppage and shift information) from the main controller 3 and the time-signal generator.
  • the CPU 29 stores the thus obtained information in association with each other in the memory 31.
  • the CPU 29 also starts measuring the stop time on the basis of the input of the detection signal as necessary.
  • the main controller 3 sets the loom operation signal to an ON state to restart the operation of the loom.
  • the above-described measurement of the stop time is finished when the loom operation signal is switched to the ON state, and is stored in the memory 31 in association with other elements of the stoppage information.
  • the above-described operation is repeated each time the loom stops, and the stoppage information is accumulated in the memory 31 in time series so as to form a database. If the amount of the stoppage information exceeds the capacity of the memory 31, the stoppage information is deleted in the order from the oldest information.
  • a display command for displaying the unit report (shift report) is input to the CPU 29.
  • the display command is output to the CPU 29 when the operator operates the setting unit 28.
  • the display command corresponds to the display request according to the present invention.
  • the display command (display request) is not limited to the command generated in response to the operation performed by the operator as described above.
  • the display command (display request) also includes a command that is automatically and periodically generated at set intervals (time period or number of picks) while a certain unit report is continuously displayed on the display unit 27. More specifically, in the case where a certain unit report is continuously displayed, the display contents may be automatically updated at set intervals. In such a case, a command signal issued to update the display contents serve as the display command (display request).
  • the CPU 29 refers to the database in which the stoppage information is accumulated and extracts the information obtained in the aggregation period for the current shift report on the basis of the information regarding the unit report. More specifically, the CPU 29 extracts the stoppage information obtained in the period from the start time point of the current shift to the current time point. Then, the CPU 29 checks each set of extracted stoppage information and determines whether the cause of stoppage is the warp stoppage or the weft stoppage. Thus, the CPU 29 classifies the stoppage information by the cause of stoppage. Then, the CPU 29 further classifies the stoppage information for each cause of stoppage by the step number, and counts the number of sets of stoppage information corresponding to each step number as the number of stoppages for each step number.
  • the CPU 29 creates record data including the aggregated numbers of stoppages in association with the causes of stoppage for each step number and forms an additional database in which the record data for each step number is accumulated.
  • the thus obtained aggregation results are displayed in the display area 27a of the display unit 27 as a part of the operational information in the shift report.
  • the CPU 29 also calculates the operating rate, the stop time, etc., by the respective methods and displays the calculation results as other parts of the operational information.
  • the operational information to be displayed on the display unit 27 is not limited to the shift report shown in Fig. 1 , and other unit reports, such as the above-described hour report and day report, may also be displayed.
  • the aggregation period for which the number of stoppages is aggregated starts at a start time point that is determined as follows. That is, when the hour report is to be displayed, the start time point is set to a time point that is A hours (A is a set value) earlier than the current time point.
  • A is a set value
  • the start time point is set to a time point at which the operation of the loom was started in the current day (0 AM of the current day if the loom is continuously operated from the previous day).
  • the CPU 29 determines the stoppage information necessary for obtaining the operational information to be included in the desired unit report on the basis of the information regarding the unit report, and extracts the necessary stoppage information from the database.
  • the unit report for displaying the above-described operational information is not limited to the shift report, the hour report, and the day report.
  • the unit report may also be made for every warp beam, every unit length of woven cloth, every take-up beam (every period from when winding of the woven cloth around a take-up beam is started to when the woven cloth is cut), or every weaving pattern (every period in which the weaving operation is performed in accordance with a constant weaving pattern).
  • information regarding the warp beam, the take-up beam, the weaving pattern, etc. is included in the stoppage information to be accumulated in the database.
  • At least one of the unit reports corresponds to the period designated at the time when the display request is issued according to the present invention.
  • the stoppage information is accumulated in time series in accordance with the time of occurrence of the cause of stoppage.
  • the database may also be created by the following two methods.
  • the CPU 29 each time a cause of stoppage occurs, the CPU 29 temporarily stores the step number, the cause of stoppage, and the information regarding the unit report in the memory 31. Then, the CPU 29 determines whether or not there is a set of stoppage information with the same step number and the same cause of stoppage in the database stored in another area of the memory 31, that is, whether or not the information is new. If the information is new, the new set of stoppage information is registered in the database and a count number therefor is set to 1. If the information is already registered, the CPU 29 increments the count number for the corresponding set of stoppage information by 1.
  • the CPU 29 extracts from the database the sets of stoppage information corresponding to the request on the basis of the information regarding the unit report. In this manner, the aggregation results are displayed on the display unit 27.
  • the database can be structured to have different tables for each of the causes of stoppage (warp stoppage and weft stoppage) instead of a single table.
  • the database is structured in the form of a matrix table in which all of the step numbers in the weaving pattern are registered.
  • the step numbers are assigned to the rows and the two causes of stoppage (warp stoppage and weft stoppage) are assigned to respective columns, or vice versa.
  • the count number in the corresponding cell in the table is incremented by 1.
  • the aggregation results are displayed on the display unit 27 in a manner similar to the above-described first method on the basis of the count numbers in the cells corresponding to the display request.
  • the aggregation period of the database may be set not only to the operation unit for the shift report but also to other units.
  • the aggregation results be shown on the display unit 27 for each cause of stoppage, as shown in Fig. 1 .
  • the aggregation results may also be obtained simply for each of the step numbers irrespective of the cause of stoppage.
  • the aggregation results displayed on the display unit 27 may also be classified into more detailed causes of stoppage.
  • the weft stoppage can be classified into the H1 stoppage, the H2 stoppage, and the feed yarn breakage
  • the warp stoppage can be classified into the ground warp breakage, the catch cord breakage, and the selvage yarn breakage.
  • the aggregation results be displayed on the display unit 27 in the order from the aggregation result with the largest number of stoppages (total number of times).
  • a list in which the numbers of stoppages are shown in the order of the step number may also be displayed.
  • a list including only the aggregation results corresponding to a certain number of stoppages or more may be displayed on the display unit 27.
  • the aggregation period in which the number of stoppages is aggregated starts at the start time point corresponding to the unit report for displaying the aggregation results. Then, only the aggregation results for the aggregation period from the start time point to the current time point are displayed.
  • the operator can also set an arbitrary time point during the operation of the loom to define an aggregation period ending at the arbitrary time point and an aggregation period starting at the arbitrary time point.
  • the display device 4 preferably displays the aggregation results obtained in the periods before and after the arbitrary time point next to each other on the display unit 27 so that the aggregation results can be compared with each other.
  • the display device 4 is provided with a dedicated setting switch and a display switch on the setting unit 28.
  • memory areas for storing the aggregation results obtained in the periods before and after the arbitrary time point are prepared.
  • the above-described setting process and the displaying process are performed in, for example, the following case.
  • the operator stops the weaving operation and makes an adjustment (change the settings). Then, to determine whether or not the abnormality has been eliminated by the adjustments, the operator performs the following operation and the display device 4 performs the following processes in response to the operation performed by the operator.
  • the CPU 29 receives an operation signal from the dedicated setting switch and stores the aggregation results obtained in the period from the start time point of the current shift to the current time in a dedicated memory area, and then clears the aggregation results. After the adjustment, the CPU 29 restarts the aggregation when the operation of the loom is restarted.
  • the CPU 29 reads out the previous aggregation results stored in the dedicated memory area and displays the previous and current aggregation results, that is, the aggregation results obtained in the periods before and after the adjustment such that the previous and current aggregation results are shown next to each other on the display unit 27.
  • the operator can easily compare the previous and current aggregation results on the display unit 27 to determine whether or not the abnormality has been eliminated.
  • the previous and current aggregation results may be alternatively displayed by switching the display screen instead of being shown next to each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP08016401A 2007-10-02 2008-09-17 Procédé d'affichage des informations opérationnelles dans un métier à tisser Withdrawn EP2045382A3 (fr)

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JP2007258586A JP5106972B2 (ja) 2007-10-02 2007-10-02 織機の稼動情報表示方法

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JP5826549B2 (ja) 2011-07-27 2015-12-02 津田駒工業株式会社 織機における製織方法及び製織装置
CN107780035A (zh) * 2016-08-31 2018-03-09 佛山市叱咤科技有限公司 断经自停装置
CN108570750B (zh) * 2018-05-07 2020-10-30 杭州伊丝顿布艺有限公司 多功能户外用品纺织机械动力系统
CN109444585B (zh) * 2018-11-09 2021-03-16 重庆仕益产品质量检测有限责任公司 电热毯的质量检测方法及检测装置

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JP2004100061A (ja) 2002-09-06 2004-04-02 Tsudakoma Corp 織機の不良内容表示方法および織機の不良内容表示装置

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EP2045382A3 (fr) 2010-01-06
JP5106972B2 (ja) 2012-12-26
CN101403162A (zh) 2009-04-08
JP2009084761A (ja) 2009-04-23
CN101403162B (zh) 2011-07-20

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