CN1952238B - Method of determining defect in weft supply package in fluid jet loom - Google Patents

Abstract

In a fluid jet loom (1), values that are based on weft signal generation timings generated from a weft sensor (18 or 28) and that are obtained when a normally operating weft supply package (10), used for supplying weft, is used are successively calculated according to respective predetermined operating period parts, and standard threshold values for determining a defect in the weft supply package (10) are determined on the basis of these values according to the predetermined operating period parts while making allowance for an allowable range, and are previously stored as threshold-value information corresponding to passage of the operating period. Thereafter, when a weft supply package (10) of a same weft type is used, a standard threshold value corresponding to an operating period part is read out from the stored threshold-value information, and the value based on the weft signal generation timings generated from the weft sensor (18 or 28) is calculated, the calculated value based on the weft signal generation timings and the read out standard threshold value corresponding to the operating period part are compared with each other, and a determination is made as to whether or not a defect has occurred in the currently used weft supply package from a magnitude relationship obtained from the comparison.

Description

The determination methods of the defect in weft supply package in of fluid jet type weaving machine

Technical field

The present invention relates to a kind of fluid jet type weaving machine in woven method of carrying out the defect in weft supply package in of judgement weft yarn supply usefulness in the process.

Background technology

Disclose in the patent documentation 1,,, in order stablize filling insertion rate, and reduced the weft inserting apparatus of expulsion pressure of the weft yarn conveying fluid of main burner along with weft yarn is supplied with the minimizing for the coil diameter of yarn body at fluid jet type weaving machine.Be not limited to this patent documentation 1, along with minimizing for the coil diameter of yarn body, to the anti-arrival for the yarn side of weft yarn regularly or soon or the fact that changes slowly be known.

And, the following fact is disclosed in the patent documentation 2, in air-jet loom, arrive regularly according to the weft yarn that detects through the regulation number of pick to anti-wefting insertion side, the calculation weft yarn arrives the data of upset condition regularly, the value and the standard value (value of standard) of this calculation result are compared, during value value of being above standard of this result, judge that present is bad for the yarn body.And, according to patent documentation 2, as the data of upset condition, also relevant for poor, the mean value that comprises maximum and minimum of a value, and the record of standard deviation.

Technology according to above-mentioned patent documentation 1 and patent documentation 2, supply with the minimizing of the coil diameter that supplies the yarn body of usefulness along with weft yarn, the flight characteristics of weft yarn changes, to this, predefined defect in weft supply package in judges that the standard value of usefulness is certain value often, therefore, consider the standard value that safety coefficient is set becomes standard to a certain extent, thereby the mistake of defect in weft supply package in can not take place the stable variation of above-mentioned flight characteristics is judged as, but it is at this moment,, opposite if safety coefficient is set at greatly, can be set at and miss the direction that defect in weft supply package in is judged, and become the reason of the reliability that reduces the bad judgement that supplies the yarn body.Thereby, although end latitude stop the true reason of platform number of times when increasing be for the quality of yarn body bad, with regard to the result that former state remains in operation, the problem of the quality of weaving cotton cloth and the productivity reduction of weaving cotton cloth.Learn from these truths, can not satisfy customer requirement by the judgment technology of so far defect in weft supply package in.

[patent documentation 1] Japan Patent discloses clear 59-47449 communique

[patent documentation 2] Japan Patent discloses clear 63-227839 communique (No. 2562594 communique of Japan Patent)

Summary of the invention

Thereby problem of the present invention is, no matter the variation of the flight characteristics of the weft yarn that causes along with the consumption that supplies the yarn body of weft yarn supply usefulness is judged the precision of defect in weft supply package in by raising, and improved the loom running efficiency.

According to above-mentioned problem, the present invention, at fluid jet type weaving machine, value is regularly taken place in the yarn signal from weft sensor when using for the yarn body, add the regulation permissible range and determine level threshold value, and with this level threshold value, be stored in the fluid jet type weaving machine by during a plurality of between the on-stream period of each loom respectively, afterwards, when using identical other of yarn variety for yarn bodies, above-mentioned fluid jet type weaving machine reads the level threshold value between the on-stream period of bringing into use this other corresponding loom of measuring during for the yarn body, on the other hand, calculate according to yarn signal value regularly takes place from above-mentioned weft sensor, and compare with the above-mentioned level threshold value that has read, and calculated surpass above-mentioned level threshold value according to above-mentioned value the time, judge in the current use above-mentioned other be bad (claim 1 embodiment 1 and embodiment 2) for yarn bodies.

Above-mentioned weft sensor is for can grasp by the sensor of the flight condition of the weft yarn of wefting insertion, particularly, by the sensor that is arranged on the weft yarn flight path (weft yarn that weft yarn arrives side touches part, Warp opening inner sensor) or, be arranged on separating of the long measuring storing device formations such as sensor of relaxing, but in fact conduct, near the knitting the end and at the weft yarn that the weft yarn flight path has a detection range of arrival side (the anti-yarn side that supplies) that is configured in weft yarn touched part.Generally, take place regularly, outside the weft yarn that more specifically has weft yarn from the arrival side of weft yarn to touch part arrives regularly, also have weft yarn to separate to relax regularly (weft yarn of explaining the sensor that relaxes by oneself is separated and relaxed regularly) etc. as yarn signal.

As above-mentioned, purport of the present invention is, with weft yarn supply with usefulness for the consumption of yarn body, in other words, use according to the level threshold value between the on-stream period of loom through changing, judge and supply the bad of yarn body, but, can consider as value regularly taking place according to yarn signal, the statistical value that a plurality of yarn signals that detect from the number of pick through regulation take place regularly to calculate (below, as the 1st main points) or reflect the value of its statistical value, for example be used to controlled quentity controlled variable of controlling wefting insertion etc. (below, as the 2nd main points).

About above-mentioned any situation, become the level threshold value of the root of judging defect in weft supply package in, be by deciding to the add calculations such as addition, multiplication of regulation permissible range of value regularly take place according to yarn signal.And, level threshold value can determine by during a plurality of between the on-stream period of each loom, between the on-stream period of this loom be, during till confession yarn body is use up to disappearing from full volume state, so, about be suitable for 1 level threshold value during length, can be set at particularly, identical with the cycle of calculating of above-mentioned statistical value or than this calculate the longer and confession yarn body that becomes full volume of cycle to disappear when most between needed on-stream period below 1/2.

And, this level threshold value, except that taking place the regularly decision according to each yarn signal in actual measurement on the loom, the data that can also utilize in the factory of weaving cotton cloth data such as the variation tendency of the prediction of accumulation in the past or provide for the manufacturer of yarn body etc. from loom manufacturer, weft yarn.

Then, about above-mentioned the 1st main points, particularly, above-mentioned fluid jet type weaving machine, in the operation of the level threshold value of storing above-mentioned decision, as value regularly taking place according to above-mentioned yarn signal, the statistical value of regularly calculating takes place in set basis through the above-mentioned a plurality of yarn signals that detect during a plurality of, calculation by the regulation permissible range that adds at above-mentioned statistical value of having calculated, determine above-mentioned level threshold value, and the level threshold value that determined above-mentionedly stored during a plurality of by each respectively, afterwards, with the operation of using above-mentioned other above-mentioned level threshold values during for yarn bodies to compare in, read the level threshold value between the on-stream period of bringing into use the above-mentioned corresponding loom that other are measured during for yarn bodies, as value regularly taking place according to above-mentioned yarn signal, on the other hand, calculate according to statistical value regularly taking place through a plurality of a plurality of yarn signals that detect of throwing a spear, and compare with the above-mentioned level threshold value that has read, and when the statistical value of having calculated surpasses above-mentioned level threshold value, judge that above-mentioned other confession yarn bodies in the current use are bad (claim 2 embodiment 1).

Statistical value comprise in mean value, maximum, minimum of a value and the standard deviation more than 1.And, as above-mentioned,, specifically be set in following scope between its on-stream period by determining level threshold value between each different on-stream period.Be to become (between sampling date) during the accumulation of yarn signal of the basis that statistical value calculates between minimum on-stream period, the level threshold value of this moment is determined by each statistical value of having calculated.To this, between maximum on-stream period be carry out between on-stream period 1 yarn tube share many five equilibriums during, the level threshold value of this moment, the value of a plurality of statistical values that accumulate during each according to further equalization determines.

Level threshold value can use statistical value outside itself, can also use statistical value is carried out some processing and the value that obtains, to be specially the value of calculating by by the resulting formula of regression analysis.

The statistical value that timing is obtained takes place from above-mentioned yarn signal, comprise that more specifically mean value, maximum, minimum of a value, more than 1 of standard deviation regularly takes place a plurality of yarn signals, and to the level threshold value of each value, then calculated automatically, store as the value (higher limit lower limit) of permissible range that the actual value of obtaining is added.Above-mentioned yarn signal takes place regularly itself to throw a spear in the deviation that has on the angle about several °～tens of ° by each wefting insertion, only can't judge soundly with this value.Therefore, the present invention does not comprise itself embodiment of object is as a comparison taken place regularly yarn signal.

And, about above-mentioned the 2nd main points, according to yarn signal value regularly takes place, in the time of will carrying out wefting insertion control for basis as the statistical value that above-mentioned the 1st main points are calculated, utilize (embodiment 2) as the controlled quentity controlled variable of Weft insertion controller.

About above-mentioned the 2nd main points particularly, above-mentioned fluid jet type weaving machine, calculate according to statistical value regularly taking place through a plurality of yarn signals that detect of throwing a spear, and this above-mentioned fluid jet type weaving machine has wefting insertion control function, promptly, to be direction for the setting operation condition revisal of the later weft inserting apparatus of throwing a spear next time near the above-mentioned predefined desired value of having calculated of statistical value, above-mentioned fluid jet type weaving machine, in the operation of the level threshold value of storing above-mentioned decision, as value regularly taking place according to above-mentioned yarn signal, set the relevant value of calculating when above-mentioned wefting insertion is controlled of the revisal with above-mentioned setting operation condition, value that will be relevant with the above-mentioned revisal more than 1 is the calculation of basis by the regulation permissible range that adds, and determine above-mentioned level threshold value, and the level threshold value that determined above-mentionedly stored during a plurality of by each respectively, afterwards, with the operation of using above-mentioned other above-mentioned level threshold values during for yarn bodies to compare in, read the level threshold value between the on-stream period of bringing into use the above-mentioned corresponding loom that other are measured during for yarn bodies, to compare by carrying out value relevant and the above-mentioned level threshold value that has read that above-mentioned wefting insertion control calculated as value regularly taking place with above-mentioned revisal according to above-mentioned yarn signal, and when the value relevant with above-mentioned revisal surpasses above-mentioned level threshold value, judge that above-mentioned other confession yarn bodies in the current use are bad (claim 3 embodiment 2).

Above-mentioned Weft insertion controller is, weft yarn arrival mean value regularly as above-mentioned statistical value of having calculated is arrived regularly near target, and control is as the device of the setting value (the injection beginning timing of nozzle, the ejection force value of nozzle or weft yarn are separated and relaxed regularly) of the setting operation condition of weft inserting apparatus (Weft insertion nozzle of main burner or auxiliary jet etc., long measuring storing device etc.).

About above-mentioned wefting insertion control, become the statistical value of basis, specifically be mean value, and become the setting operation condition of the revisal object of weft inserting apparatus, specifically be the pressure (Weft insertion nozzle pressure) of relevant weft yarn timing of getting period (injection beginning of Weft insertion nozzle regularly, separate by the weft yarn of the latch of long measuring storing device and to relax regularly) or relevant weft yarn flying speed.And, wefting insertion control, nearly all use mean value as statistical value at present, but, as long as be effective in the control of specific purpose, for example maximum, minimum of a value, standard deviation etc. can be used as the statistical value beyond it, value and the structure controlled of mean value more than 1 such as combination maximum, minimum of a value, standard deviation can also be.

About the above-mentioned the 1st or the 2nd main points, above-mentioned weft sensor can by be configured in anti-knit near the end and touch part for the yarn side at the weft yarn that the weft yarn flight path has its detection range constitute (claim 4), and, can also constitute (claim 5) by being configured in the weft inserting apparatus side and having the easypro sensor of separating of its detection range in the flight path of being separated easypro weft yarn.Above-mentioned fluid jet type weaving machine, in the process of the above-mentioned level threshold value of decision, store the yarn signal generation value regularly that a plurality of bases are calculated successively by each for the yarn body, simultaneously, 1 value for yarn body share according to reading from above-mentioned a plurality of storing values for the yarn body determines the level threshold value (claim 6) that above-mentioned defect in weft supply package in is used.

And level threshold value by board condition (form of rotation number, the formation of knitting the width of cloth, weft inserting apparatus, the Weft insertion nozzle etc.) difference of kind of weft yarn (product kind) or loom, still, if these conditions are identical, then can be diverted.Promptly, about this storage threshold information, the information that is not limited at every turn obtain can also be utilized and for example pass by the value that obtains at its board, also can read and utilize from storage card etc., the storage threshold information to obtain at other boards under the identical condition, the present invention includes any way.

Between on-stream period about loom, particularly, calculate between the sampling date of the yarn signal of yarn signal when regularly statistical value takes place, the control cycle when calculating the revisal amount of wefting insertion control etc., except that the signal of will throwing a spear is carried out (counting wefting insertion number of pick) as standard, also the time can be carried out (integrating is from the time of standard timing) as standard.And, standard regularly takes place about yarn signal, can be with the main shaft angle as standard, or also can with from elapsed time of the standard angle of main shaft as standard, the present invention includes any way.

According to the present invention, from according to normal yarn signal for the yarn body value regularly takes place, by a plurality of level threshold values that are used to judge defect in weft supply package in of process decision between each on-stream period, so, this level threshold value is, the value that reflection weft yarn flight characteristics changes, the variation of this weft yarn flight characteristics between on-stream period through stably taking place, and, also be corresponding for the degree of consumption of yarn body or the value of switching.Thereby, can determine to dwindle level threshold value to the feasible value (safety coefficient) of the above-mentioned standard timing that has detected.To this, with in the past, compare when utilizing the not free threshold value that changes, safety coefficient can be established low (claim 1).

And, by the value regularly and the comparative result of above-mentioned level threshold value taking place, carry out the judgement of defect in weft supply package in, and utilize the level threshold value of the safety coefficient of considering above-mentioned necessary irreducible minimum to carry out its judgement according to present above-mentioned yarn signal, so its judged result is compared more accurate than in the past.Be judged as bad confession yarn body by exchanging rapidly according to the high judged result of this reliability, thus the quality (claim 1) that can further improve the productivity of weaving cotton cloth and weave cotton cloth.

And, at the fluid jet type weaving machine that does not use wefting insertion control function, will value regularly take place as arriving statistical value regularly according to weft yarn according to yarn signal, from in advance the above-mentioned a plurality of level threshold values that determined to store, read corresponding from switching for the level threshold value between the loom on-stream period after the yarn body, simultaneously, by statistical value and the above-mentioned level threshold value of obtaining now that has read compared, and carry out the judgement of defect in weft supply package in, so, calculating by additional its statistical value and level threshold value, arbitration functions is calculated in storage, can easily implement the technology (claim 2 claim 4) of claim 1.

And,, also can easily carry out the judgement of defect in weft supply package in arriving on the fluid jet type weaving machine that has wefting insertion control function that regularly is difficult to judge for the yarn body in the past with weft yarn.For example begin regularly to make weft yarn to arrive the loom of timing, operate that because of weft inserting apparatus weft yarn arrival is regularly arrived regularly near target near target timing at weft inserting apparatus operation wefting insertion, so, be difficult to judge with weft yarn arrival timing for the yarn body in the past.But as the present invention, will value regularly take place according to yarn signal, begin regularly according to the wefting insertion that weft yarn arrives the controlled quentity controlled variable of statistical value regularly as reflection, from serving as according to a plurality of level threshold values that determines to store with above-mentioned controlled quentity controlled variable in advance, read corresponding from switching for the level threshold value between the loom on-stream period behind the yarn body, simultaneously, compare by the wefting insertion that reflects present controlled quentity controlled variable being begun timing and the above-mentioned level threshold value that has read, and carry out the judgement of defect in weft supply package in, therefore, read the comparison arbitration functions by the additional storage of calculating that begins level threshold value regularly according to the wefting insertion of being calculated by the wefting insertion control that becomes prerequisite, can be specifically and easily realize the technology (claim 3 claim 5) of claim 1.

And, fluid jet type weaving machine, in the process of the above-mentioned level threshold value of decision, store the yarn signal generation value regularly that a plurality of bases are calculated successively by each for the yarn body, simultaneously, according to 1 the value that from above-mentioned a plurality of storing values, reads for yarn body share for the yarn body, determine the level threshold value that above-mentioned defect in weft supply package in is used, therefore, can determine level threshold value for selecting the value of yarn body to utilize normally for the value of yarn body from a plurality of, and can corresponding various weft yarns (claim 6).

Description of drawings

Fig. 1 is the major part of fluid jet type weaving machine and the key diagram of weft inserting apparatus.

Fig. 2 is the calcspar of Weft insertion controller, main control unit and setting apparatus.

Fig. 3 is for being set the flow chart of operation by the threshold value of embodiment 1 (not having wefting insertion control).

The flow chart that Fig. 4 handles for supervision processing and the operator behind the judgement defect in weft supply package in for the yarn body by embodiment 1 (not having wefting insertion control).

The flow chart of Fig. 5 for turning round and finish continuously by the shutdown (because of the shutdown that causes through exhausting of axle) of embodiment 1 (not having wefting insertion control).

Fig. 6 shows routine key diagram for the picture by view display/loader by embodiment 1 (not having wefting insertion control).

Fig. 7 is the key diagram by the demonstration example of the setting picture of embodiment 1 (not having wefting insertion control).

Fig. 8 is the coordinate diagram that concerns by the variation tendency of the weft yarn arrival mean value regularly of embodiment 1 (not having wefting insertion control) and threshold value (higher limit lower limit).

Fig. 9 is for being set the flow chart of operation by the threshold value of embodiment 2 (not having wefting insertion control).

The flow chart that Figure 10 handles for supervision processing and the operator behind the judgement defect in weft supply package in for the yarn body by embodiment 2 (not having wefting insertion control).

The flow chart of Figure 11 for turning round continuously and finish by the shutdown of embodiment 2 (not having wefting insertion control).

Figure 12 arrives the coordinate diagram of the variation tendency of mean value regularly for the weft yarn by embodiment 2 (not having wefting insertion control).

Figure 13 is the coordinate diagram that concerns by the variation tendency of the weft yarn arrival mean value regularly of embodiment 2 (not having wefting insertion control) and level threshold value (higher limit lower limit).

The specific embodiment

Fig. 1 represents, the fluid jet type weaving machine when being suitable for example 1 described later and example 2 (below, abbreviate loom as.) and the integral body of weft inserting apparatus 2.Weft inserting apparatus 2 for the opening 5 of weft yarn 3 wefting insertion to warp thread 4, possesses long measuring storing device 6, possesses main burner 7 and a plurality of auxiliary jet 8 as Weft insertion nozzle.

Weft yarn 3, supply with drawing from the weft yarn that is supported by support 9 for yarn body 10, by rotation guide 11 guiding of the long measuring storing device 6 of drum-type, when the reel for yarn of the periphery of the cylinder 12 of inactive state is ended by latch 13 cards on face, reel for yarn by being wound on cylinder 12 by rotatablely moving of rotation training for sediment 11 is around face, only measure 1 throw a spear the length of share and when storing to wefting insertion till.And rotation training for sediment 11 is driven to coiling direction by CD-ROM drive motor 15.

Even, even disappear to the greatest extent 1 for yarn body 10 weft yarn 3 of this confession yarn body 10 does not exist, also in order to continue continuous weaving, prepared a plurality of for example two confession yarn bodies 10, the gauze kerchief worn on a woman's head of the tail yarn of one side's confession yarn body 10 and the opposing party's confession yarn body 10 becomes yarn and is connected (tieing), and is kept by tensioner 14.When drawing tieing yarn (weft yarn 3), replace sensor 16, connect the switching of the mobile detection of (tieing) from yarn, and take place for the yarn alternating signal for yarn body 10 for yarn.This is for the yarn alternating signal, arrive statistical value (mean value) regularly in order to obtain about a plurality of weft yarns for yarn body 10, finish up to the present employed weft yarn and arrive accumulation regularly for yarn body 10, these data as 1 yarn tube share are summarized preservation, simultaneously, as the weft yarn of confession yarn body 10 arrives the signal of accumulation regularly and utilizes so that begin newly automatically.Certainly, the detection that replaces for yarn is not limited to the tieing detection, also can use known method.

If when wefting insertion, latch 13 is operated device 17 and drives, and retreats around face from the reel for yarn of cylinder 12, then is wound on the weft yarn 3 of reel for yarn on face of cylinder 12, only separates 1 the required length of wefting insertion of relaxing on cylinder 12.At this moment, separate the sensor 18 that relaxes, detect and on cylinder 12, separate passing through of easypro weft yarn 3, yarn signal takes place, from separating outside the number that relaxes of this yarn signal detection weft yarn 3, the wefting insertion that one of timing takes place the yarn signal of detection weft sensor begins regularly (weft yarn is separated the timing of relaxing).Even, separate by weft yarn and to relax regularly, can infer the position of the weft yarn tip of this moment, so to touch part same with weft yarn described later, also can be used as weft yarn and arrive regularly and utilize.

Wefting insertion when action, main burner 7, from injection beginning between the injection period of spraying till finishing, spray as the pressure air 19 that sprays fluid, draw by its tractive force and separate easypro weft yarn 3, with weft yarn 3 with pressure air 19 wefting insertion in opening 5.Thus, weft yarn 3, the flight paths flight in the opening 5 and by wefting insertion.And pressure air 19 from pressure air source 21, through pressure regulator 22, electromagnetic opening and closing valve 23, is fed into main burner 7 between injection period.

In the flight course of weft yarn 3,1 or 2 auxiliary jets 8 with cogroup, spray or servo expulsion pressure air 19 together to its heading on flight coordination by limit and weft yarn 3 and limit, in opening 5 aloft weft yarn 3 is applied power to the wefting insertion direction.And, from the pressure air 19 of pressure air source 21,, supply to the auxiliary jet 8 of each group through pressure regulator 24, electromagnetic opening and closing valve 25.

By injection action as the auxiliary jets 8 of the main burner 7 of Weft insertion nozzle and a plurality of groups, normally by the weft yarn 3 of wefting insertion,, be woven as and weave cotton cloth after 26 by reed 20 26 the fell 26a of weaving cotton cloth that beats up to, cut off by confession yarn cutter 27 in the wefting insertion side, and the weft yarns 3 in main burner 7 cut.

And the weft inserting apparatus 2 of Fig. 1 is 1 look wefting insertion, but when multicolor weft insertion, corresponding polychrome number is prepared a plurality of weft yarns 3 (for yarn body 10), long measuring storing device 6, main burner 7, supplied yarn body 10 etc.

The success or failure of the wefting insertion during wefting insertion are by being arranged on knitting near the of end parts and touching part 28 at the weft yarn that the flight path of weft yarn 3 has its detection range and detect of anti-wefting insertion side.Weft yarn touches the weft sensor of part 28 for weft yarn arrival side, sends yarn signal when detecting weft yarn 3, this is delivered to weft yarn touch part circuit 29.Weft yarn touches part circuit 29, when between suitable yarn detection period, receiving yarn signal, send the weft yarn arriving signal according to yarn signal, and this is delivered to Weft insertion controller 30, still, when between suitable yarn detection period, not receiving yarn signal, it is bad then to be judged as wefting insertion, send wefting insertion rub-out signal, and this delivered to main control unit 31 in order to stop latitude control the finish time between above-mentioned detection period.

Weft insertion controller 30, in order to control the key element of relevant wefting insertion, input from the angle signal of the encoder 33 of the main shaft 32 that is connected in fluid jet type weaving machine 1, confess yarn replace sensor 16 for the yarn alternating signal, from weft yarn touch the weft yarn arriving signal of part circuit 29, from the various control signal control instructions of main control unit 31 and be set in advance in the various numerical informations of setting apparatus 34, the CD-ROM drive motor 15 of control long measuring storing device 6, operator 17, pressure regulator 22,24 and the electromagnetic opening and closing valve 23,25 of latch 13.

And, main control unit 31, input from the various numerical informations of the various signals of Weft insertion controller 30, setting apparatus 34, and touch the wefting insertion rub-out signal of part circuit 29, the running of control fluid jet type weaving machine 1 from weft yarn.

Fig. 2 represents configuration example, these and the example that is connected of main control unit 31 of Weft insertion controller 30 and setting apparatus 34.Weft insertion controller 30 is made of memory 35, CPU36, I/O port 37 and drive circuit 38, and, connect these successively.Memory 35 collections have the required control program of action of CPU36, on the other hand, can store the information of control data that CPU36 calculates etc., CPU36, by I/O port 37, receive above-mentioned weft yarn arriving signal, for the yarn alternating signal, CRANK PULSES, stop signal, abnormal signal, in the time of numerical information (setting value or practical measurement value), deliver to I/O port 37 according to necessary processing such as control program perform calculations and with action command, drive the CD-ROM drive motor 15 of long measuring storing device 6 successively from drive circuit 38, the operator 17 of latch 13, pressure regulator 22,24 and electromagnetic opening and closing valve 23,25, and the information with control data etc. is stored in memory 35 as required.

Setting apparatus 34 is made of memory 39, CPU40, I/O port 41, view display/loader 42 and card I/F43, and is connecting these successively.View display/loader 42 is for example as the touch screen mode.At memory 39, collection has the required handling procedure of action of CPU40, on the other hand, can store the information of data that CPU40 calculates etc., CPU40 by I/O port 41, shows or carries out the processing of setting apparatus that connect such as input of conduct setting value on the touch screen as view display/loader 42, can also download threshold data from storage card 44 by card I/F43.

And above-mentioned setting apparatus 34, Weft insertion controller 30 also are connected main control unit 31.Main control unit 31, and setting apparatus 34 between can send information such as receiving setting value or practical measurement value, simultaneously, except that weft yarn touches part circuit 29, Weft insertion controller 30, to other not shown control circuits, outside the loom status signal of output CRANK PULSES or stop signal etc., can receive abnormal signal such as wefting insertion rub-out signal and control the action of integral body such as loom turn round, stops.

[embodiment 1]

Embodiment 1 is the method for the judgement defect in weft supply package in of fluid jet type weaving machine, correspondence does not have the state of wefting insertion control function, in other words, in the wefting insertion process, arrive the speed in period, the example the when weft yarn of not adjusting relevant weft inserting apparatus 2 arrives the key element in period according to weft yarn.Fig. 3 to Fig. 5 represents, flow process by the method for the judgement defect in weft supply package in of the fluid jet type weaving machine of embodiment 1, more specifically expression, when using normally for the yarn body, arrive statistical value regularly from weft yarn level threshold value is stored in memory corresponding to the process between on-stream period, begin to judge defect in weft supply package in when supplying yarn body 10 next time according to the level threshold value of above-mentioned storage from switching, and bad by being judged as, and exchange reruns one of loom and connects operation for yarn body 10.So company processing is to carry out control program (software) that is collected in Weft insertion controller 30 sides or the handling procedure (software) that is collected in setting apparatus 34 sides respectively by CPU36 or CPU40, and finish.

Fig. 3 is, do not weaved the confession yarn body 10 of the new weft yarn 3 of experience the past, arrive the threshold value decision operation of data decision threshold regularly from the resulting weft yarn of the loom that turns round continuously, more particularly, be from using normal weft yarn during for the yarn body to arrive statistical value regularly, determine level threshold value by the process between each on-stream period, and the level threshold value of 1 yarn tube share is stored in the operation of memory 39 by the process between each on-stream period.At first, using before past do not weave the confession yarn body 10 of new weft yarn 3 of experience, pass or the adjustment running of test weaving running etc., the operator begins the continuous running of fluid jet type weaving machine 1 afterwards, simultaneously, begin the operation input by setting apparatus 34 being carried out not shown weaving, and begin threshold value decision operation shown in Figure 3, and beginning is according to arriving the regularly sampling (step 1) of (weft yarn arrival angle) from the weft yarn that touches the yarn signal of part about the weft yarn that is arranged on anti-wefting insertion side for yarn body 10 in using.And CPU36 is received in its I/O port 37 with the weft yarn arriving signal and from the loom main shaft angle signal θ of encoder 33, arrives main shaft angle when regularly detecting the weft yarn arriving signal and taking place as weft yarn.On the other hand, CPU36, the weft yarn that these each wefting insertion are throwed a spear arrives regularly when the number of samples of predefined regulation accumulates, in the data that obtain the regulation number of samples, calculate the statistical value (mean value) in the arrival period (weft yarn arrives regularly) of weft yarn 3, simultaneously, its statistical value (mean value) is throwed a spear number storage at memory 35 corresponding to the sampling as the value of the process between corresponding loom on-stream period, and with these data accumulations go down (step 2).

Even, the statistical value (mean value) that is carried out in above-mentioned threshold value decision operation or the judgement defect in weft supply package in operation described later is calculated the number of samples of operation, on the picture of view display/loader shown in Figure 6 42, select to set the numerical value (32 of number of samples in advance by the operator, 100,1000 throw a spear), and be set, and send to the Weft insertion controller side in advance, CPU36, by each number of samples of from above-mentioned, selecting, arrive based on the weft yarn of the number of samples share of nearest detection and regularly to calculate the throw a spear statistical value (mean value) of share of 1 sampling, and, by carrying out unceasingly thereafter, weft yarn is arrived statistical value regularly (weft yarn arrives the mean value of angle) throw a spear number and be stored in memory 35 corresponding to sampling as above-mentioned calculating.

And, calculate 1 sampling when throwing a spear the statistical value mean value of angle (weft yarn arrive) of share as above-mentioned, judge the whether (step 3) of most generation that disappears for yarn body 10.Particularly, CPU36, judge confess yarn replace sensor 16 for the generation of yarn alternating signal whether, if do not take place then to get back to above-mentioned steps 1, continue its data accumulation for yarn body 10 for the yarn alternating signal, if take place for the yarn alternating signal, CPU36 sends to setting apparatus 34 sides with its information, simultaneously, stops loom by main control unit 31.On the other hand, this weft yarn arrives statistical value data regularly, also be sent to setting apparatus 34, the operator is by operating and setting device 34, the statistical value of mean value that each sampling is as shown in Figure 6 throwed a spear etc., summarize 1 yarn tube share and when being collected in memory 39, also can be to be diagrammatically shown on the picture.By disappearing to the greatest extent for yarn body 10, the operator utilizes whether the data for yarn body 10 of judgement accumulation like this such as above-mentioned demonstration are the data that quality supplies yarn body 10 normally, its result has chosen normal data if be judged as, by carrying out not shown operation at setting apparatus 34, Weft insertion controller 30 then finishes the accumulation (step 4) that weft yarn arrives statistical value data regularly.And, for yarn body 10 disappear to the greatest extent can by confess yarn replace sensor 16 for outside the detecting of yarn alternating signal, also can substitute detection by the process (by wefting insertion regulation number of pick) between the on-stream period of imagination in advance.At this, the operator has chosen the normal aforesaid operations that supplies the data of yarn body 10 by following to be judged as, and enters next procedure 5 (judge and calculate → store with threshold value).And, in the process of above-mentioned judgement, when the operator judges that the data of accumulation are unusual, carry out corresponding not shown operation at setting apparatus 39, thus, from a plurality of data of storage, remove unnecessary accumulation data, begin new data accumulation for yarn body 10 for the yarn body.

Normal/abnormal for yarn body 10, as detailed description at Fig. 6 or Fig. 8 of back, can be from the tendency of the stable variation of data, be that the tendency that weft yarn arrives the stable variation of statistical value (mean value) is regularly judged.The operator confirms that from the displaying contents of view display/loader 42 the stable variation of data is inclined to, and continues building up to of data and can choose till the normal data for yarn body 10.

So, choose after the data that quality supplies yarn body 10 normally, operation by the operator, setting apparatus 34, arrive statistical value regularly based on the weft yarn that is collected in memory 39 that reads in Weft insertion controller 30 sides, the processing of beginning decision automatically and storage standards threshold value for yarn body 1 yarn tube share.More specifically, the operator carries out selecting from the data for yarn body 10 1 or more of accumulation so far and thinks the operation of normal 1 confession yarn volume data, CPU40 is according to the handling procedure that is collected in memory 39 in advance, from these data, read weft yarn and arrive the mean value in period and the sampling number of throwing a spear, simultaneously the mean value that has read is added respectively and consider safety coefficient and in advance by the input value of the permissible range of setting apparatus 34 inputs, and its result that adds determined as level threshold value, this is stored in outside the memory 39 as level threshold value by each sampling number of throwing a spear, equally also sends to the Weft insertion controller 30 that in fact has the function of judging defect in weft supply package in and be stored in memory 35 (step 5).

When this level threshold value of automatic setting, on picture shown in Figure 7 described later, reply input by the operator, preestablish the permissible range value (higher limit shown in Figure 8, lower limit) of the safety coefficient of considering regulation at setting apparatus 34.Thus, the CPU40 of setting apparatus 34 will determine as level threshold value according to its former state in the add value (promptly, upper limit level threshold value and lower limit standard threshold value) of above-mentioned each permissible range value of the mean value that has read, and correspondence is respectively got the ocean and throwed a spear and be stored in memory 39.About choosing the setting of the level threshold value after this data, the foregoing description is, after most for disappearing of yarn body 10, example through the Visual Confirmation operation, this Visual Confirmation operation is the operator arrives the state of statistical value regularly with the weft yarn of Visual Confirmation accumulation a operation, but, replace this affirmation through the people, about the transfer of calculating operation to level threshold value could be basis with the upset condition of each statistical value, automatically judge that by software algorithm etc. it is also passable to transfer to next procedure according to its judged result.And, about calculating of level threshold value, when disappearing for yarn body 10 when most to summarize for yarn body 1 yarn tube share and to carry out, still, also can with respectively get the calculating simultaneously of statistical value of throwing a spear in the ocean and carry out.

In threshold value decision operation, do not weave the confession yarn body 10 of the new weft yarn 3 of experience about the past, draw level threshold value by the number of throwing a spear as each sampling during a plurality of between on-stream period, this can be utilized in regular weaving from now in the employed bad judgement for yarn body 10.

Afterwards, the operator is for regular the weaving from the new weft yarn 3 that supplies yarn body 10 after disappearing to the greatest extent for the yarn body, continuous running (the step 6) of beginning fluid jet type weaving machine 1, in its weaving process about new for yarn body 10, use the throw a spear level threshold value of number of each above-mentioned sampling that obtains, supervision handling procedure by transferring to band shown in Figure 4 circle A word (carry out the new bad judgement for yarn body 10 for yarn body 10 by step 11).

Fig. 4 represents, yarn variety is same as above-mentioned new for yarn body 10 for the yarn body, and the supervision that Weft insertion controller 30 carries out handles that the demonstration that (for the bad judgment processing of yarn body 10), setting apparatus 34 carry out is handled, and the operation that connects handled etc. of the operator of defect in weft supply package in after judging.At Fig. 4, the CPU36 of Weft insertion controller 30, according to the control program that is collected in memory 35, the count value full recovery that to calculate the number of pick that becomes basis when the statistical value of number or sample number is throwed a spear in sampling etc. as initial setting is to " 0 ", simultaneously, beginning is so that calculate the sampling (step 11) that weft yarn arrives statistical value regularly.Then, CPU36, (weft yarn arrival angle) is transfused to when weft yarn arrives regularly, then to the number of pick counting+1 corresponding to number of samples, stores it simultaneously and arrives regularly.And CPU36 reaches setting by the calculated value of throwing a spear as sample number, and is same with above-mentioned threshold value decision operation, arrives the mean value of regularly calculating as statistical value based on a plurality of weft yarns of above-mentioned storage, simultaneously, and to sampling number+1 counting of throwing a spear.And CPU36 reads the throw a spear level threshold value (step 12) of number of the corresponding above-mentioned sampling that amounts to from memory 35.And, CPU36, judge confess yarn replace sensor 16 for the generation of yarn alternating signal (step 13) whether, reach specific length and take place to cut off to stop to wait to judge whether to finish continuous running (step 14) by not taking place for the yarn alternating signal or weave length, any judged result all is not the time, then enters the judgment processing steps (step 15) as the defect in weft supply package in of characteristic processing of the present invention.

(step 15), CPU36 arrive statistical value regularly according to this weft yarn of calculating and whether surpass the throw a spear level threshold value of number of the sampling of being read in the operation of corresponding above-mentioned steps 2, judge bad for yarn body 10 in these judgment processing steps.At present embodiment, with the statistical value of calculating as mean value, in above-mentioned threshold value decision operation, mean value when supplying the yarn body according to use is normal, two level threshold values that decision and storage are made of the upper limit and lower limit, and, in the operation of above-mentioned step 2, read throw a spear two level threshold values (upper limit threshold lower threshold) of number of sampling in the corresponding existing counting.Thereby, in this judgment processing (in the step 15), arrive the mean value of statistical value regularly as if weft yarn as this, be in the scope from upper limit threshold to lower threshold, then be judged as normal, on the contrary, this mean value judges then that greater than upper limit threshold or less than lower threshold for yarn body 10 be unusual (bad).If be judged as just often (during yes), then get back to the step 12 of Fig. 4, with above-mentioned same, under the state of the continuous running that continues loom, carry out the throw a spear processing of judgment processing etc. of the reading of the calculating of later statistical value, threshold value, defect in weft supply package in of sub-sampling down.But, be judged as (during no) when unusual CPU36, by I/O port 37, setting apparatus 34 is sent its information and shows alarm (warning), on the other hand, export the abnormal signal of corresponding defect in weft supply package at main control unit 31 and stop the continuous running (step 16) of loom.To the loom that so stops, the operator carries out being shown to the affirmation work that so far weft yarn arrives the variation etc. of statistical value regularly at setting apparatus 34, judges whether to rerun same as before (step 17).If, the operator thinks and is necessary to have a look situation again and is judged as (during yes) when rerunning same as before, the operator removes above-mentioned alarm (warning) states by setting apparatus 34 or carries out the value of regulation permissible range changed into suitable value and the operations necessary of established standards threshold value etc. again, reruns loom (step 18).And, if when being judged as the processing of exchange etc. of not carrying out rerunning and supplying yarn body 10 (during no), the operator removes above-mentioned alarm (warning) state, simultaneously, be exchanged for new necessary processing (step 19) such as confession yarn body 10, (step 6), beginning is by the new continuous running for yarn body 10 to transfer to the handling procedure of band shown in Figure 3 circle B word.

Consideration is interrupted by weaving of causing of the fault of loom 1 or shutdown etc., is above-mentioned end turned round continuously? (judgement of step 14) is necessary.Thus, a treatment step that connects is not so-called Infinite Cyclic, when this step 14yes, forwards the program C of Fig. 5 to, after the work of shutting down, finishes running continuously.Even, statistical value (mean value)≤threshold value (level threshold value)? deterministic process in, statistical value is a mean value, during according to threshold range (scope of lower limit and higher limit) setting threshold, does it relatively become higher limit＜mean value＜lower limit? judgement, but,, will be judged as above the state of the either party in the higher limit lower limit unusually and get final product according to the kind of statistical value.Thereby at this moment, above-mentioned either party's value becomes its level threshold value.

And, during the operator after defect in weft supply package in is judged handles, the confession yarn body 10 during the operator confirms to use, judge whether to rerun same as before (step 17), select loom to rerun (step 18), and turn back to step 2, or bad confession yarn body 10 is exchanged for new confession yarn body 10 (steps 19).Stop (step 16) rerunning in the judgement (step 17) afterwards at alarm demonstration → loom, the possibility that the work of carrying out setting again of permissible range value for example etc. is arranged, so impel the operator to judge, but, also can for example omit this and rerun automatically, particularly, it is known for yarn body switch to turn round, be exchanged for new confession yarn body 10 with being judged as bad confession yarn body 10, and can automatically rerun loom 1.

Does and the above-mentioned yarn body that supplies disappear to the greatest extent? (in the detection of step 3) during yes, and step 8 after, transfer to the band circle B word of Fig. 3, and carry out the step 6 of Fig. 3.Carry out when most new judgment processing (count value of throwing a spear of the number of will throwing a spear as sampling reverts in zero, carries out judgment processing by the level threshold value of the initial count value of throwing a spear of correspondence) disappearing for yarn body 10.

Fig. 6 represents the demonstration example by touch screen formula view display/loader 42.On the picture of view display/loader 42, kind (yarn variety of weft yarn 3) for yarn body 10 can be specified by the yarn variety designated button 45 on picture top, and number of samples can be selected by the number of samples selector button 46 that " 32 " under the picture, " 100 ", " 1000 " show.The operator runs into yarn variety designated button 45, and the yarn tube mark of the weft yarn 3 of selection (for yarn body 10) becomes and the different state of other nonoptional yarn tube marks, and shows the selection yarn variety.

The chart of the picture central authorities of view display/loader 42 is as an example expression, the weft yarn during sample number 32 is throwed a spear arrive regularly the mean value of (angle °) broken line graph A, link bar graph B that the weft yarn of sample number 32 in throwing a spear arrive regularly the maximum of (angle °) and minimum of a value, and weft yarn arrive regularly the broken line graph C of the standard deviation of (angle °).Display part on the picture of view display 47 at every turn can scrolling 50 samples by the spool button 47 of the triangle mark of left and right directions.

The picture demonstration of view display/loader 42, also enough with monochrome, show that Jiang Getu (A, B, C) or axle etc. is shown by different colors, then further improves observability but preferably be made as polychrome (colour).During the multicolor weft insertion loom, the selection operation by by the yarn variety of yarn variety designated button 45 can replace with the demonstration of above-mentioned yarn variety.

So, the operator can from the picture displaying contents of view display/loader 42 arrive regularly with the visual confirmation weft yarn (angle) statistical value through the time change.Thereby, the process of so corresponding motion is based on the variable condition of the statistical value of diagram demonstration, weft yarn in the time of can confirming to be judged as defect in weft supply package in simply arrives the variation of statistical value regularly, and can improve weft yarn 3 for the quality of yarn body 10 or set the wefting insertion condition again and make the wefting insertion stabilisation, and help for the qualitative control of yarn body 10 or the management of wefting insertion.

Fig. 7 represents that weft yarn arrives an example of the setting picture of situation/setting alarm.At this picture, if touch yarn variety designated button 45, the yarn yarn tube mark of the weft yarn of selecting 3 (for yarn body 10) then is shown as the different state of nonoptional yarn yarn tube mark with other, and becoming can be to the state of selecting yarn variety to import.[the alarm ON/OFF] on the left hurdle of picture be, to select yarn variety about whenever throw a spear, the selection or the unselected part of mean value, standard deviation specified alarm.If touching on the dimetric hurdle that meets, then shows * and become the selection mode of ON, touching this hurdle once more, * demonstration at this moment disappears and becomes the OFF selection mode.Set according to the selection of [alarm ON/ alarm OFF], when in weaving, being above standard threshold value, can select whether to export alarm as the statistical value of object.During alarm ON, for example, can arouse operator's attention by stopping loom 1 or lighting outside tower lamp.

About whenever throw a spear, mean value, from the viewpoint of the supervision of permissible range can the capping value, lower limit, but can only the capping value about standard deviation.Because standard deviation is represented the so-called non-uniform degree,, and, needn't remove to monitor lower limit firmly thus owing to smooth wefting insertion under desirable state so the value of being somebody's turn to do is the smaller the better.Like this, if generation is whenever throwed a spear, weft yarn arrives the situation that mean value regularly surpasses higher limit or is lower than lower limit, then export alarm.About standard deviation, when the standard deviation of obtaining surpasses higher limit, the output alarm.When setting these threshold values, the operator at first by touching at the input field that meets of touch screen formula picture, and the not shown numeric keypad of video data input usefulness is then by touching successively in the numeral that meets and input value.

And, the right hurdle of mean value, standard deviation is to set the hurdle of the sample number of calculating mean value, standard deviation interval, by clicking the mark of triangle down in the hurdle, in the hurdle, select suitable number " 1000 " or " 100 " or " 32 " etc., or by not shown numeric keypad input.To other yarn variety, the setting of these sample numbers too can be with intrinsic setting value.

Fig. 8 represents the setting example as the threshold value of the mean value of statistical value, represents that with coordinate diagram so-called weft yarn when not using wefting insertion control arrives the mean value regularly and the relation of level threshold value.In this example,, in the arrival period of weft yarn 3 (weft yarn arrives regularly),, change with stable descending tendency straight line along with the consumption of weft yarn 3 accelerates gradually according to the normal yarn body 10 that supplies of some yarn variety.Thus, if for normal for yarn body 10, weft yarn arrives mean value regularly, occurring for initial stage of yarn body 10 and final differential seat angle about with 20 °, by the angle of alternately getting back to the initial stage for yarn.And, arrive an example of the tendency of descending regularly as weft yarn, at other yarn variety, its weft yarn arrives regularly, along with the minimizing of coil diameter, sometimes also with the tendency linearity of descending or curve-like change.

Thus, weft yarn arrives the permissible range (higher limit and lower limit) of mean value regularly, for example based on as Fig. 8 for the mean value (for example carrying out regression analysis etc.) of yarn body 1 yarn tube share with the similar mean value straight line that obtains as standard, the straight line of its standard up and down as angle, for example draw parallel lines on 10 ° the position and set and be concealed in the level threshold value that each sampling of memory 39 is throwed a spear sowing discord, can collect from the sampling number of pick being the value that the function of parameter is derived.In fact, at the number of pick of each regulation, in other words, with the number of pick of regulation as 1 group and established standards threshold value (higher limit and lower limit), so stepped ramp type on chart, takes place by per 1 group (number of pick of regulation) and changes in the higher limit of threshold value and the lower limit of threshold value.

And, become the mean value of basis during about decision level threshold value (higher limit, lower limit), replace using the above-mentioned mean value that is similar to straight line, can use the above-mentioned mean value that obtains itself, particularly, also the mean value of throwing a spear in each sampling can be added itself the value of the permissible range value of considering safety coefficient (at the numerical value of the input field input of Fig. 7) gained same as before as level threshold value.But as shown, mean value is throwed a spear by each sampling and is changed up and down, so according to the permissible range value, the danger that mistake is judged as defect in weft supply package in can take place.

For prevent above-mentioned danger carry out following be treated to suitable.For example, when calculating threshold value, will become the mean value of the statistical value of basis, according to this decision threshold as continuous a plurality of each statistical value.For example calculate these mean value 10,000 statistical values obtaining, calculate level threshold value according to this simultaneously, the level threshold value of (10,000 samplings are throwed a spear) as during this period and determining from throwing a spear through 10,000 samplings.According to this setting, level threshold value during each sampling is throwed a spear, for example each 10,000 throw a spear be set at step-like.And the number of the statistical value when calculating the mean value of above-mentioned each statistical value is not limited to above-mentioned " 10,000 ", as long as throw a spear for the sampling of " 2 " above integer.

Subsidiary, according to as in the past example be fixed into the threshold value that has nothing to do in for the weft yarn consumption figure of yarn body 10, the operator considers that the weft yarn by 1 normal weft yarn 3 for yarn body 10 arrives the variation of the tendency of descending regularly, mean value in the early stage adds about 20 °, mean value in final period subtracts about 20 ° of calculations, sets permissible range.Thus, as shown in the marge of Fig. 8, its permissible range is very big scope (210 °～250 °).Thereby, arrive in the judgement that regularly obtains at relatively this big permissible range and weft yarn for the quality of yarn body 10, only otherwise break away from this big scope, then handling for yarn body 10 be normally, thus reliability is lower than judgement of the present invention.

Embodiment 1, also can implement as following (1) and (2) distortion.(1) statistical value that is used for bad judgement is not limited to above-mentioned mean value.As long as be useful on bad judgement, then can use for yarn body 10.The value of maximum, minimum of a value or these differences, standard deviation etc. are arranged as the statistical value beyond the mean value.According to mean value, can grasp the tendency of the integral body of weft yarn flight angle, so often use in the adjustment of the weft inserting apparatus 2 of loom 1 or grasp for the quality of yarn body 10 as statistical value.And maximum, minimum of a value, standard deviation are that the expression weft yarn arrives uneven scope regularly, the numerical value of degree of irregularity, and often use is in the adjustment of the ejection pressure of the adjustment of wefting insertion, especially Weft insertion nozzle (main burner 7 and auxiliary jet 8).But the effect about in the judgement of defect in weft supply package in is actually unknown number, but arrives the inhomogeneous yarn variety that changes regularly for the variation of following the coil diameter that supplies yarn body 10 (minimizing) weft yarn, is considered as effectively.

(2) about the judgement of the defect in weft supply package in of Fig. 4, as long as statistical value be above standard threshold value once more than, then be judged as defect in weft supply package in, but survey for fear of flase drop, also can be for example when the statistical value continuous several times etc., when further satisfying a plurality of condition of regulation, be judged as defect in weft supply package in for the first time.And, will be made as the statistical value of monitored object more than 2, be judged as defect in weft supply package in the time of also can in a plurality of statistical values, satisfying defined terms more than 1.

[embodiment 2]

Embodiment 2, it is the determination methods of defect in weft supply package in of the fluid jet type weaving machine of claim 3, correspondence has the state of wefting insertion control function, in other words, the weft yarn of adjusting relevant weft inserting apparatus 2 by the speed that arrives period according to weft yarn in the wefting insertion process arrives the key element in period, is period that weft yarn arrives the example of timing controlled in target zone the time with weft yarn arrival.Fig. 9, Figure 10 and Figure 11, the flow process of the determination methods of the defect in weft supply package in of the fluid jet type weaving machine of expression embodiment 2, more specifically be expression, when using normally for the yarn body, the wefting insertion that the implementation revisal imposes a condition as wefting insertion begins regularly the wefting insertion control of (getting regularly), making the weft yarn of calculating arrive statistical value regularly arrives regularly near target, simultaneously to setting value as this revisal result, the decision level threshold value, and the process between corresponding on-stream period is stored in memory 39, from switch next time for yarn body 10 time, the limit is carried out above-mentioned wefting insertion control limit the setting value by this control revisal is begun judgement according to the defect in weft supply package in of the level threshold value of above-mentioned storage, and it reruns company's operation till the loom for yarn body 10 by being judged as bad exchange.This even processing, same during with embodiment 1, carry out control program (software) that is collected in Weft insertion controller 30 sides or the handling procedure (software) that is collected in setting apparatus 34 sides respectively by CPU36 or CPU40, and finish.

At embodiment 2, Weft insertion controller 2, carry out wefting insertion begin regularly (getting regularly) be main burner 7 injection beginning regularly and latch 13 separate the revisal regularly of relaxing, the mean value that makes one of statistical value as arrival period of weft yarn 3 for example arrives regularly 230 ° of angle on targets near target.As long as the function of this wefting insertion control is effective, even increase for the consumption of yarn body 10, the mean value (weft yarn arrives regularly) that arrives one of the statistical value in period as weft yarn will be controlled at target arrive regularly (230 ° of angle on targets) near.

Same with Fig. 3, Fig. 9 represents, do not weave the confession yarn body 10 of the new weft yarn 3 of experience about the past, the weft yarn that obtains from the running loom arrives the threshold value decision operation of data decision threshold regularly, more detailed in representing, carry out the wefting insertion that the revisal wefting insertion one of imposes a condition and begin regularly the wefting insertion control of (getting regularly), arrive regularly near target and make the weft yarn of calculating arrive statistical value regularly, simultaneously, to the setting value decision level threshold value as this revisal result, and the process between corresponding on-stream period is stored in the operation of memory 39.At first, using before past do not weave the confession yarn body 10 of new weft yarn 3 of experience, adjust running, afterwards, the operator begins the continuous running of fluid jet type weaving machine 1, begin the operation input by setting apparatus 34 being carried out not shown weaving simultaneously, beginning threshold value decision operation as shown in Figure 9, beginning arrives the regularly sampling (step 21) of (weft yarn arrival angle) according to the weft yarn that the weft yarn from being arranged on anti-wefting insertion side for yarn body 10 in relevant the use touches the yarn signal of part.

And, CPU36, similarly to Example 1, the loom main shaft angle signal θ that reaches from encoder 33 from the weft yarn arriving signal arrives the angle detection as weft yarn, the weft yarn that this each each wefting insertion is throwed a spear arrives angle when the sample number of predefined regulation accumulates, calculate the statistical value (mean value) (step 22) in the arrival period (weft yarn arrives regularly) of weft yarn 3 in the moment of the data that obtain the regulation sample number, simultaneously based on this statistical value (mean value), relatively weft yarn arrives regularly and target arrival timing (230 °), carries out the judgement (step 23) that the revisal condition is set up.

This revisal condition is used in, so that by target being arrived the situation occurred of deviation regularly, judgement as the wefting insertion of the setting value of weft inserting apparatus 2 begin that regularly revisal action carries out could, CPU36, by carrying out control program, for example, carry out wefting insertion and begin revisal regularly by satisfying following full terms.Condition 1 is, the target of the mean value that regularly detects for the arrival from weft yarn 3 arrives regularly that the deviation of (230 °) is for example situation more than 6 ° of ormal weight, and condition 2 is situations that condition recurs for more than 1 time.When 2 of conditions take place 1 time, do not carry out wefting insertion and begin revisal regularly.And the revisal amount of this moment is calculated by the P1 that comprises proportional integral to deviation, to setting value with above-mentioned revisal amount to the revisal that adds of the direction of deviation releasing.And every increase preestablishes according to yarn variety.

CPU36, in step 23, whether decision carries out wefting insertion begins revisal regularly, if do not need revisal (no), then enter step 5, but if need revisal (yes), to be used to make wefting insertion to begin regularly (angle) approaches target and arrives regularly the revisal amount (angle) of (230 °) and for example calculate by said method, use this revisal amount (angle), the revisal wefting insertion begins regularly, come into effect during the wefting insertion of throwing a spear since next time according to as the wefting insertion of the operation condition after this revisal regularly (angle) and a wefting insertion control (step 24) that connects of wefting insertion enters step 25 thereafter.

Above-mentioned wefting insertion begins timing, is also referred to as weft yarn and gets arrival regularly, particularly, is influenced by the easypro timing of separating of the timing of the injection beginning of main burner 7, latch 13.Wefting insertion begins regularly regularly consistent with the injection beginning of main burner 7, and latch 13 separate before the injection beginning timing that regularly is set to main burner 7 of relaxing, for example before several °.Begin revisal regularly by above-mentioned wefting insertion, injection beginning timing, the separating of latch 13 of revisal main burner 7 are relaxed regularly.

By carrying out the control of this wefting insertion, be that weft yarn arrives regularly actual arrival period of weft yarn 3, is adjusted to keep target often and arrive regularly (230 °).On the other hand, CPU36 will begin regularly as the wefting insertion that value regularly takes place according to yarn signal, and corresponding to together being stored in memory 35 from bringing into use for the sampling of the wefting insertion between the on-stream period of the yarn body number of throwing a spear, and accumulation go down (step 25).And, the detection in the arrival period of the setting of sample number or weft yarn 3 (weft yarn arrives regularly) etc., same with the foregoing description 1.

And, carry out stores processor by above-mentioned steps 5, judge simultaneously for disappearing of yarn body 10 to be full of not generation (step 26).Particularly, CPU36, judge to confess yarn replaces whether taking place for the yarn alternating signal of sensor 16, then do not turn back to above-mentioned steps 21 for the yarn alternating signal if take place, continue its data accumulation for yarn body 10, and if take place to replace signal for yarn, CPU36, same with the situation of embodiment 1, its information is delivered to setting apparatus 34 sides, stop loom 1 by main control unit 31 simultaneously.On the other hand, reformed wefting insertion begins regularly under this wefting insertion control, also be sent to setting apparatus 34, the operator is by operating and setting device 34, the CPU40 of setting apparatus 34 sides begins the wefting insertion of revisal regularly to summarize 1 yarn tube share and be collected in memory 39, simultaneously on display be angle as required and be the sampling number of throwing a spear, and can on picture, diagram show transverse axis with the longitudinal axis.So, by disappearing to the greatest extent for yarn body 10 and stopping, the operator utilizes above-mentioned demonstration to wait to judge whether the data for yarn body 10 of accumulation like this are that quality supplies yarn body 10 normally, its result is judged as when having chosen normal data, by carrying out not shown operation at setting apparatus 34, Weft insertion controller 30 finishes relevant wefting insertion and begins accumulation (step 27) regularly.At this, the operator is by judging the operation of having chosen normal data, and CPU40 enters next procedure 28 (judge and calculate → store with threshold value).In addition, in above-mentioned deterministic process, the operator, when judging that the data that accumulate are unusual, by carry out corresponding not shown operation at setting apparatus 34, from a plurality of data of storage, remove unnecessary accumulation data, and turn back to the new data accumulation of step 21 beginning for yarn body 10.

Then, CPU40, the wefting insertion that begins regularly to calculate timing takes place as yarn signal based on the wefting insertion in above-mentioned steps 5 accumulation begins judgement threshold value regularly, and storage (step 28).More specifically, the operator, carry out from the data 1 or more of accumulation so far, selecting and think the operation of data of normal 1 confession yarn body 10 for yarn body 10, CPU40, consider safety coefficient and to the wefting insertion that each sampling of storage the is throwed a spear input value of the permissible range of input in advance that begins regularly to add respectively, decision begins level threshold value (level threshold value regularly to wefting insertion, higher limit and lower limit), except that the number of throwing a spear by each sampling is stored in the memory 39 as level threshold value, also deliver to the Weft insertion controller 30 that in fact has the function of judging defect in weft supply package in, be stored in memory 35 by CPU36.About the judgement that data accumulation finishes, similarly to Example 1, perhaps the operator judges, perhaps automatically judges.

Among the embodiment 2, owing to carry out wefting insertion control,, be controlled at target by wefting insertion and arrive near timing (230 °) or its so be that weft yarn arrives regularly in arrival period of the weft yarn 3 of the arrival side of weft yarn 3.For example, in the weft yarn kind of flying easily,, weft yarn accelerates gradually because arriving timing along with the minimizing of the coil diameter that supplies yarn body 10, so by carrying out above-mentioned wefting insertion control, revisal is regularly slack-off for wefting insertion is begun, its result, weft yarn arrives regularly almost not change, and is roughly certain.To this, as yarn signal wefting insertion regularly taking place begins regularly (weft yarn is got regularly), though relevant yarn variety generally along with the consumption for yarn body 10, than the initial stage, has slow tendency in the later stage, this tendency repeatedly when at every turn supplying yarn to replace.

Set about the level threshold value after the data decimation, outside the affirmation operation via the operator, judge move good automatically, and it is also passable to move on to next procedure by software algorithm etc.In addition, briefly carried out calculating of threshold value when disappearing when most, but carried out also passable simultaneously with calculating of statistical value for yarn body 10.

Like this, in threshold value decision operation, do not weave the confession yarn body 10 of the new weft yarn 3 of experience about the past, by each as the number of throwing a spear of the sampling during a plurality of between on-stream period, draw wefting insertion and begin level threshold value regularly, this value can be utilized in regular weaving from now on about in the bad judgement for yarn body 10.

Thereafter, in order to carry out regular weaving by new weft yarn 3 for yarn body 10, the operator makes fluid jet type weaving machine 1 beginning running (step 29) continuously, in its weaving process to new for yarn body 10, use the throw a spear wefting insertion of number of each sampling drawn to begin level threshold value regularly, by moving on to the supervision handling procedure of band circle D word shown in Figure 10, carry out the bad judgement in the new use for yarn body 10.

Figure 10 represents, about in the new use for yarn body 10, handle one of processing that (for the bad judgment processing of yarn body 10) and defect in weft supply package in judge that the back operator carries out etc. from the supervision that begins with round D word and connect operation.In the step 29 of just now Fig. 9, use new confession yarn body 10 running looms 1 continuously, the CPU36 of Weft insertion controller 30, according to the control program that is collected in memory 35, move on to the band circle D word of Figure 10, the count value full recovery that will become number of pick that calculating the data number of sampling when throwing a spear the statistical value of number or sample number etc. as initial setting is to " 0 ", and begins to be used for to carry out the sampling (step 31) of bad judgement to what use for yarn body 10.Then CPU36 is transfused to then number of pick count value+1 as sample number when weft yarn arrives regularly (weft yarn arrival angle), stores it simultaneously and arrives regularly.And, CPU36, reach setting by the count value of throwing a spear as sample number, same with above-mentioned threshold value decision operation, the counting of sample number is returned to " 0 ", and, arrive the mean value of regularly calculating based on a plurality of weft yarns of above-mentioned storage as statistical value, from a plurality of level threshold values of above-mentioned storage, read the throw a spear wefting insertion of number of the corresponding sampling that begins to count when bringing into use simultaneously and begin the regularly level threshold value (step 32) of usefulness for yarn body 10.

And, CPU36, judge confess yarn replace sensor 16 for the generation of yarn alternating signal whether (step 33), reach the length of regulation and cut off the reason that stops etc. by not taking place for the yarn alternating signal and weave length, judge whether to finish continuous running (step 34), when if judged result is all not, then enters and whether carry out the judgment processing steps (step 35) that wefting insertion begins revisal regularly.And, same with the processing of above-mentioned threshold value decision operation, judge whether the revisal condition of wefting insertion is set up, if do not need revisal (no), then directly enter step 37.If, need revisal (yes), then calculate and be used to make wefting insertion to begin regularly (angle) arrives timing (230 °) near target revisal amount (angle), use this revisal amount (angle), the revisal wefting insertion begins setting value regularly, begin regularly (angle) according to wefting insertion and carry out wefting insertion control (step 36), afterwards, enter judgment processing steps (step 37) as the defect in weft supply package in of characteristic processing of the present invention as the operation condition after this revisal.

In these judgment processing steps (step 37), begin regularly whether to surpass the throw a spear level threshold value of number of the sampling of reading in the operation of corresponding step 32 according to the wefting insertion of revisal, judge bad for yarn body 10.On the other hand, in the operation of aforesaid step 32, read throw a spear two level threshold values (upper limit threshold lower threshold) of number of sampling in the corresponding existing counting.Thereby in this judgment processing (step 37), this wefting insertion begins regularly as if in the scope that is in from upper limit threshold to lower threshold, then be judged as normal, opposite, wefting insertion begins regularly to surpass upper limit threshold or less than lower threshold, judges that then for yarn body 10 be unusual (bad).If be judged as just often (during yes), then return the processing of the step 32 of Figure 10, with above-mentioned same, under the state with the continuous running that continues loom 1, carry out the throw a spear processing of judgment processing etc. of the reading of the calculating of later statistical value, threshold value, defect in weft supply package in of next step sampling.But, be judged as (during no) when unusual, CPU36 is by I/O port 37, setting apparatus 34 is transmitted its information and carries out alarm (warning) demonstration, and will stop the continuous running (step 38) of loom at main control unit 31 corresponding to the abnormal signal output of defect in weft supply package in.To the loom that so stops, the operator shows the variation (or the wefting insertion of revisal begins variation regularly etc.) of weft yarn arrival statistical value regularly so far etc. at setting apparatus 34, judge whether to rerun (step 39) with regard to former state.If, the operator thinks to have a look reasons such as situation again, be judged as when rerunning (during yes) with regard to former state, the operator is undertaken rerunning loom (step 40) as the value removing above-mentioned alarm (warning) state or change the regulation permissible range operations necessary of established standards threshold value etc. again by setting apparatus 34.And, if when being judged as the processing of exchange etc. of not carrying out rerunning and supplying yarn body 10 (during no), when the operator resets above-mentioned alarm (warning) state, be exchanged for new necessary processing (step 41) for yarn body 10 grades, move on to the handling procedure (step 29) of band circle E word shown in Figure 9, beginning is by the new continuous running for yarn body 10.

And, by reasons such as shutdown, finish continuous running? be yes when (step 34), then move on to the program C of Figure 11, carry out shutdown operation after, finish running (end) continuously.

Like this, in the continuous operation process of loom 1, carry out wefting insertion control and calculate the revisal amount that predefined wefting insertion is begun timing successively, the revisal wefting insertion begins regularly successively, simultaneously, and in order to carry out bad judgement for yarn body 10, read the throw a spear threshold value of number of the corresponding sampling that begins to count when bringing into use for yarn body 10, the wefting insertion of this value and above-mentioned revisal is begun regularly to compare, when the wefting insertion of above-mentioned revisal begins regularly to surpass the above-mentioned level threshold value that reads, can export alarm.Thus, can be implemented in the judgement of the defect in weft supply package in that the loom of carrying out wefting insertion control is difficult to realize simply, and utilize corresponding based on the level threshold value between the on-stream period of using the normal value that obtains during for the yarn body, judge defect in weft supply package in, so it is same during with the foregoing description 1, the level threshold value of the safety coefficient of considering necessary irreducible minimum can be utilized, the judgement precision of defect in weft supply package in can be improved.

Figure 12 represents, embodiment 2 is, makes weft yarn arrive mean value regularly arrives the mean value of timing near the weft yarn under the wefting insertion control of target timing passing, and, Figure 13 represents, by weft yarn arrives the weft yarn kind of regularly accelerating for the minimizing of the coil diameter of yarn body 10, the weft yarn of revisal is got setting value regularly and as this relation of level threshold value (higher limit lower limit).Even weft yarn is got regularly to wefting insertion begins regularly, according to the weft inserting apparatus 2 of Fig. 1, corresponding to separating of latch 13 relax regularly and the injection beginning of main burner 7 regularly, relax regularly and the injection beginning timing with separating, as mentioned above, almost be set at same angle.

Similarly to Example 1, along with consumption,, regularly then can accelerate as its weft yarn arrival as a result if weft yarn 3 becomes easy flight when wefting insertion for yarn body 10.But, as shown in figure 12, arriving control regularly by weft yarn, weft yarn arrives regularly to be adjusted near target and arrives regularly 230 °.Therefore, even reduce for the coil diameter of yarn body 10, weft yarn arrives regularly can be by effluxion generation cataclysm yet.

On the other hand, as shown in figure 13, it regularly is that wefting insertion begins regularly the setting value of (separating the timed injection that relaxes begins regularly) that weft yarn is got, and is controlled by wefting insertion, one for yarn body 10 by revisal be near 60 ° till 85 ° slack-off gradually direction, in each confession yarn body 10 this characteristic repeatedly.Thus, same with the situation of embodiment 1, become getting regularly of standard, for example, begin regularly (for example carrying out regression analysis etc.) as approximate 1 function (straight line) standard that obtains, throw a spear along with carrying out wefting insertion based on wefting insertion for yarn body 1 yarn tube share, as value with the change of zigzag straight line, or with the wefting insertion of revisal begin value regularly itself as standard, throw a spear along with carrying out wefting insertion, store as value with jagged change tendency.To these storage data, the permissible range value (numerical value of input in the input field of Fig. 7) that adds and consider safety coefficient, (for example above-mentioned the former situation, on the position of sowing discord 10 ° of shares, draw parallel lines and determine) calculate respectively wefting insertion begun permissible range (higher limit lower limit) regularly, and store as level threshold value.

Embodiment 2, also can following distortion and carry out.Wefting insertion control as monitored object, still also can constitute revisal result (wefting insertion begins setting value regularly) with the revisal amount as monitored object.And, wefting insertion control, be not limited to the revisal wefting insertion and begin regularly, should keep target and arrive angle and control, also can be useful in the occasion of control weft yarn flying speed, for example with the expulsion pressure 1 or more in main burner 7, the auxiliary jet 8 as the occasion of controlling object.At this moment,, afterwards, quilt under the wefting insertion control pressure instruction value and the level threshold value of revisal is successively compared, judge to supply the bad of yarn body 10 the pressure instruction value decision level threshold value (higher limit, lower limit) of pressure regulator 22,24.

The revisal amount of above-mentioned wefting insertion control is calculated, be not limited to above-mentioned PI and calculate, the PID that for example comprises the differential key element by other key element calculate or method in addition to calculate the revisal amount also passable.For example have, till deviation was removed, the setting value of operation condition is removed direction from certain value to deviation added and revisal etc.

About the revisal action in wefting insertion control, deviation is carried out outside the mode of above-mentioned revisal after taking place immediately, and when the deviation of statistical value recurred stipulated number, the mode of above-mentioned revisal might as well to start with.Perhaps, set and not carry out dead band revisal, so-called with small deviation, or to excessive deviation with the revisal amount be defined as certain value, what is called is provided with limitation function etc., adopts known technology also passable.

About level threshold value,, carry out following also passable to embodiment 2 in order to simplify or to improve the judgement precision.(1) the further equalization between a plurality of samplings are throwed a spear of the setting value that will become the basis that threshold value calculates, according to this with step-like decision level threshold value.(2) carry out numeric value analysis (linear regression analysis etc.) based on the setting value of storage, the setting value of obtaining at approximate mathematical expression input number of pick, the above-mentioned permissible range value that adds and established standards threshold value.

At embodiment 1, embodiment 2, according to wefting insertion throw a spear signal, promptly arrive calculating regularly, the decision of level threshold value, the processing such as judgement of defect in weft supply package in as standard with the wefting insertion number of pick, but these are handled, and will carry out also passable as standard from the duration of runs (weaving the process of time) of using new loom during for yarn body 10.

At the multicolor weft insertion loom, make each number (each weft yarn kind) and carry out the structure of judgment processing of decision, defect in weft supply package in of the calculating of statistical value, level threshold value for more by weft inserting apparatus 2.

About being used in the level threshold value for the bad judgement of yarn body 10, above-mentioned each example is example that will the actual data of obtaining adopt with regard to former state in woven loom, but also can adopt over the value that accumulates on other boards.At this moment, the supervisory computer by the loom in the factory of weaving cotton cloth from the medium of storage card shown in Figure 2 44 grades or management reads accumulating information in the past, and setting threshold also can.

Obvious, the invention is not restricted to air-jet loom, can be useful on all fluid jet type weaving machines, can also utilize on the multicolor weft insertion loom.And method of the present invention also can use a computer, and be realized by program.

Claims (8)

1. the method for the judgement defect in weft supply package in of a fluid jet type weaving machine is characterized in that:

Will to from the yarn signal of weft sensor (18,28) the value regularly level threshold value that the permissible range of regulation determines that adds taking place when using for yarn body (10), respectively by a plurality of storage between the on-stream period of each loom (1) in fluid jet type weaving machine (1)

Thereafter, when using identical other of yarn variety for yarn bodies (10), above-mentioned fluid jet type weaving machine (1) reads the level threshold value between the on-stream period of bringing into use this other corresponding loom (1) of measuring when (10) for the yarn body, and calculate according to the value that timing takes place from the yarn signal of above-mentioned weft sensor (18,28), and compare with the above-mentioned level threshold value that has read, and calculated surpass above-mentioned level threshold value according to above-mentioned value the time, judge in the current use above-mentioned other for yarn bodies (10) for bad.

2. the method for the judgement defect in weft supply package in of fluid jet type weaving machine according to claim 1 is characterized in that:

Above-mentioned fluid jet type weaving machine (1), in the operation of the level threshold value of storing above-mentioned decision, as value regularly taking place according to above-mentioned yarn signal, set basis above-mentioned a plurality of during in a plurality of yarn signals of detecting the statistical value of regularly calculating takes place, calculation by the regulation permissible range that adds at above-mentioned statistical value of having calculated, determine above-mentioned level threshold value and the level threshold value that is determined is got off by each above-mentioned a plurality of storage respectively

Thereafter, with the operation of using above-mentioned other above-mentioned level threshold values during for yarn bodies (10) to compare in, read the level threshold value between the on-stream period of bringing into use the above-mentioned corresponding loom (1) that other are measured when (10) for yarn bodies, as value regularly taking place according to above-mentioned yarn signal, calculate according to a plurality of yarn signals that in a plurality of throwing a spear, detect statistical value regularly takes place, and compare with the above-mentioned level threshold value that has read, and when the statistical value of having calculated surpasses above-mentioned level threshold value, judge that above-mentioned other in the current use supply yarn body (10) for bad.

3. the method for the judgement defect in weft supply package in of fluid jet type weaving machine according to claim 1 is characterized in that:

Above-mentioned fluid jet type weaving machine (1), calculate according to the yarn signal that in a plurality of throwing a spear, detects statistical value regularly takes place, and this fluid jet type weaving machine has wefting insertion control function, this wefting insertion control function will be the direction near the above-mentioned predefined desired value of having calculated of statistical value for the setting operation condition revisal of the later weft inserting apparatus (2) of throwing a spear next time

Above-mentioned fluid jet type weaving machine (1), in the operation of the level threshold value of storing above-mentioned decision, as value regularly taking place according to above-mentioned yarn signal, set the relevant value of having calculated when above-mentioned wefting insertion is controlled of the revisal with above-mentioned setting operation condition, value by will be relevant with the above-mentioned revisal more than 1 is the add calculation of regulation permissible range of basis, determine above-mentioned level threshold value, and the level threshold value that is determined is got off by each above-mentioned a plurality of storage respectively

Thereafter, with the operation of using above-mentioned other above-mentioned level threshold values during for yarn bodies (10) to compare in, read the level threshold value between the on-stream period of bringing into use the above-mentioned corresponding loom (1) that other are measured when (10) for yarn bodies, as according to above-mentioned yarn signal value regularly taking place and will comparing by value relevant and the above-mentioned level threshold value that has read that the implementation of above-mentioned wefting insertion control is calculated with above-mentioned revisal, and when the value relevant with above-mentioned revisal surpasses above-mentioned level threshold value, judge that above-mentioned other in the current use supply yarn body (10) for bad.

4. according to the method for the judgement defect in weft supply package in of wantonly 1 described fluid jet type weaving machine in the claim 1～3, it is characterized in that:

Above-mentioned weft sensor is by being configured near anti-knitting the end and touching part (28) at the weft yarn that the weft yarn flight path has its detection range and constituted for the yarn side.

5. according to the method for the judgement defect in weft supply package in of wantonly 1 described fluid jet type weaving machine in the claim 1～3, it is characterized in that:

Above-mentioned weft sensor is constituted by being configured in weft inserting apparatus (2) side and having the easypro sensor of separating of its detection range (18) in the flight path of separating easypro weft yarn (3).

6. according to the method for the judgement defect in weft supply package in of wantonly 1 described fluid jet type weaving machine in the claim 1～3, it is characterized in that:

Above-mentioned fluid jet type weaving machine (1), in the process of the above-mentioned level threshold value of decision, store the yarn signal generation value regularly that a plurality of bases are calculated successively by each for yarn body (10), simultaneously, 1 value for yarn body share according to reading from above-mentioned a plurality of storage values for yarn body (10) determines above-mentioned defect in weft supply package in to judge the level threshold value of usefulness.

7. according to the method for the judgement defect in weft supply package in of wantonly 1 described fluid jet type weaving machine in the claim 1～3, it is characterized in that:

Above-mentioned fluid jet type weaving machine (1) is set the length between the on-stream period of applied code threshold value, with the computing cycle of above-mentioned statistical value for minimum and will from re-assembly for the yarn body till disappear to the greatest extent 1/2 between needed integrating on-stream period for maximum scope in.

8. according to the method for the judgement defect in weft supply package in of claim 2 or 3 described fluid jet type weaving machines, it is characterized in that:

Above-mentioned statistical value comprise in mean value, maximum, minimum of a value, the standard deviation more than 1.

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