CN102421687B - Yarn winding device and alarm threshold value determination method for detection of rotational faults in a package - Google Patents
Yarn winding device and alarm threshold value determination method for detection of rotational faults in a package Download PDFInfo
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- CN102421687B CN102421687B CN201080020938.XA CN201080020938A CN102421687B CN 102421687 B CN102421687 B CN 102421687B CN 201080020938 A CN201080020938 A CN 201080020938A CN 102421687 B CN102421687 B CN 102421687B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/10—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers
- B65H54/103—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers forming frusto-conical packages or forming packages on frusto-conical bobbins, tubes, cores or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/42—Arrangements for rotating packages in which the package, core, or former is rotated by frictional contact of its periphery with a driving surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
- B65H63/006—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package quality control of the package
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/30—Numbers, e.g. of windings or rotations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Winding Filamentary Materials (AREA)
Abstract
Disclosed is a yarn winding device which can automatically detect, with high precision, rotational faults in a package. An automatic winder is provided with a winding unit (16) and a machine control device (11). The winding unit (16) performs the task of winding the yarn. The machine control device (11) controls the winding unit (16). The machine control device (11) includes a logical package calculation section (27) and a computation unit (17). The logical package calculation section (27) calculates the number of times the logical package is rotated. The computation unit (17) determines an alarm threshold value for deciding whether or not a package rotational fault exists, based on the number of rotations of the logical package. The alarm threshold value is input to the winding unit (16). An alarm decision unit (76) of the winding unit (16) makes an alarm decision by comparing the actual number of rotations of the package with the alarm threshold value.
Description
Technical field
The present invention relates generally to winding yarn and forms the Yarn reeling device of package.
Background technology
In the Yarn reeling devices such as automatic bobbin winder, known following formation all the time: via bearing with the package support for rotating, making the drum rotary actuation in this package of contact that traverses, make thus the driven rotation of package and winding yarn.
In this Yarn reeling device, patent documentation 1 is disclosed in the method for calculating Yarn reeling thickness etc. in the formation of package.In the formation of patent documentation 1, according to package tachometry value, the bulging tachometry value of traversing and the bulging bulging diameter etc. that traverses, calculate Yarn reeling thickness δ and roll diameter d
spDeng.And, across roll diameter d
spThrough of Yarn reeling thickness δ being recorded in memory device or being shown in telltale.In addition, patent documentation 1 also discloses following formation: because the actual value of the Yarn reeling thickness δ that calculates means that less than the situation of expected value cross winding package is reeled with the high density that is rolled into, therefore the deceleration by CD-ROM drive motor etc. makes rolling density return to the control of normal value.
The prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 10-72168 communique
Summary of the invention
The problem that invention will solve
Yet, above-mentioned like that by bearing with the Yarn reeling device of package support for the formation that can rotate in, when this bearing et out of order etc. and package can not rotate swimmingly the time, the drum friction of traversing that the outer peripheral face of package is rotated becomes the reason of damage and heating.Therefore, in the situation that the malrotation of this package has occured, this is bad and carry out certain reply in preferential early detection.
Therefore, method as the malrotation that detects package, consider following method: decide the lower limit (threshold value) of the package rotating speed that can allow with the form of having estimated suitable surplus, and whether the measured value of investigating current package rotating speed is less than above-mentioned threshold value.
But the decision of this threshold value is not easy to carry out.Namely, in Yarn reeling device, as required the condition of batching (thickness of yarn, package shape etc.) is carried out various changes and to batch the situation of yarn more, if but when changing at every turn, the Yarn reeling condition all to reset in operator's side calculated threshold, need plenty of time and labour.On the other hand, if whole Yarn reeling conditions are used without exception common threshold value, have to get larger surplus and be made as very loose Rule of judgment, cause the accuracy of detection of the malrotation of package to reduce.
In addition, in the formation of above-mentioned patent documentation 1, according to roll diameter d
spBetween relation calculate Yarn reeling thickness δ, be because the coiling density that the important characteristic value of the process of the actual value of Yarn reeling thickness δ and cross winding package is yarn has relation, rather than in order to detect malrotation.In addition, in patent documentation 1, roll diameter d
spDecide (not deciding according to thickness of yarn or package shape etc.) according to package tachometry value and the bulging tachometry value of traversing, so when the malrotation of package occurs, the roll diameter d that calculates
spValue deviate from mutually with actual value.Therefore, the formation of patent documentation 1 can not suitably detect the malrotation of above-mentioned the sort of package and notify towards periphery.
The present invention carries out in view of above situation, and its purpose is to provide a kind of can detect the Yarn reeling device of the malrotation of package accurately automatically.
Be used for solving means and the effect of problem
The problem that the present invention will solve then describes means and the effect thereof that is used for this problem of solution as mentioned above.
According to viewpoint of the present invention, provide the Yarn reeling device of following formation.That is, this Yarn reeling device possesses winding unit and control part.Above-mentioned winding unit is provided with the drum of rotation.And above-mentioned winding unit makes the driven rotation of package carry out the operation of batching of yarn by above-mentioned drum.Above-mentioned control part is controlled above-mentioned winding unit.Above-mentioned control part possesses theoretical package calculating part and operational part.Above-mentioned theory package calculating part theory of computation package rotating speed.Above-mentioned operational part decides the alert threshold of malrotation for the judgement package according to above-mentioned theory package rotating speed.
Therefore thus, can automatically set alert threshold, can determine neatly suitable alert threshold and use Yarn reeling device.
In above-mentioned Yarn reeling device, preferred above-mentioned theory package calculating part comes theory of computation roll diameter according to the Yarn reeling condition, and comes theory of computation package rotating speed according to above-mentioned theory roll diameter and Yarn reeling speed.
Thus, can set and the corresponding suitable alert threshold of Yarn reeling condition.In addition, can also easily tackle the change of Yarn reeling condition.
In above-mentioned Yarn reeling device, the above-mentioned theory roll diameter when preferred above-mentioned theory roll diameter is full volume.
Thus, only by obtaining once theoretical package rotating speed according to this theory roll diameter, just can access the alert threshold that can be applied to same yarn wire reel-up condition.Therefore, can simplify the processing that theoretical package calculating part and operational part carry out.
In above-mentioned Yarn reeling device, the yarn variety that preferred above-mentioned Yarn reeling Conditional Include is reeled and the package shape of formation.
Thus, theory of computation roll diameter correctly.
Preferably become following formation in above-mentioned Yarn reeling device.That is, above-mentioned winding unit also possesses the length measurment of batching section and batches the length efferent.The above-mentioned length measurment section of batching measures the length that yarn is wound and namely batches length.Above-mentionedly batch that length efferent output is above-mentioned batches the length of batching that length measurment section measures.Above-mentioned control part possesses the length of batching input part.To the above-mentioned above-mentioned above-mentioned length of batching of batching the output of length efferent of length input part input of batching.Above-mentioned theory package calculating part comes theory of computation roll diameter according to Yarn reeling condition and the above-mentioned length of batching, and calculates theoretical package rotating speed when batching length measurment according to this theory roll diameter and Yarn reeling speed.
Thus, can obtain the theoretical roll diameter in the moment that batches in the way according to batching length, even therefore in the situation that change from beginning of batching roll diameter and package rotating speed during finish, also can access suitable alert threshold.
In above-mentioned Yarn reeling device, preferably when above-mentioned theory package rotation speed change, above-mentioned alert threshold is updated.
That is, yarn batch the way in the package rotating speed can constantly change, but by becoming above-mentioned formation, which moment can both go out with good accuracy detection the malrotation of package in.
Wherein, in above-mentioned Yarn reeling device, can also be corresponding to the variation of above-mentioned theory package rotating speed, and switch alert threshold interimly.
Thus, the load of theoretical package calculating part and operational part is significantly increased, can corresponding to reel for yarn around the propelling situation and switch alert threshold ground and use Yarn reeling device.
Preferably become following formation in above-mentioned Yarn reeling device.That is, above-mentioned control part possesses the threshold value efferent.Above-mentioned threshold value efferent output alert threshold.Above-mentioned winding unit possesses threshold value input part, package tachometry section, alarm judging part and alarm section.To above-mentioned threshold value input part input alert threshold.Above-mentioned package tachometry section measures the rotating speed of package.The package rotating speed that above-mentioned alarm judging part is measured alert threshold and above-mentioned package tachometry section compares and carries out the alarm judgement.Above-mentioned alarm section gives the alarm according to the judgement of above-mentioned alarm judging part.
Thus, by the alarm that alarm section produces, the operator can learn the situation of the malrotation that has produced package in early days.In addition, section is arranged at winding unit due to alarm, so the operator can easily determine to occur the winding unit of the malrotation of package.
In above-mentioned Yarn reeling device, the body control setup of preferred above-mentioned control part for a plurality of winding units are controlled.
Thus, can use the body control setup to carry out same operation to a plurality of winding units.Therefore, can shorten production time.
According to other viewpoints of the present invention, the alert threshold determining method that provides a kind of malrotation that is used for package that comprises following the sort of operation to detect.That is, in theoretical roll diameter calculation process, come theory of computation roll diameter according to the yarn variety of reeling, package shape and the required length of yarn of formation package.In theoretical package rotating speed calculation process, come theory of computation package rotating speed according to the above-mentioned theory roll diameter.Determine to decide alert threshold according to above-mentioned theory package rotating speed in operation at alert threshold.
Thus, can automatically set alert threshold according to the Yarn reeling condition, use Yarn reeling device so can determine neatly suitable alert threshold.
Description of drawings
Fig. 1 is that the master of the automatic bobbin winder of one embodiment of the present invention looks skeleton diagram.
Fig. 2 means the front view of the summary of the winding unit that automatic bobbin winder possesses.
Fig. 3 means the block diagram of the main composition of body control setup and winding unit.
Fig. 4 is the chart that the relation of the alert threshold of one embodiment of the present invention and roll diameter is described conceptually.
Fig. 5 is the chart that the relation of the alert threshold of the first variation and roll diameter is described conceptually.
Fig. 6 is the chart that the relation of the alert threshold of the second variation and roll diameter is described conceptually.
Fig. 7 means the front view of winding unit that detects the formation of yarn speed by the yarn speed sensor.
The specific embodiment
Then, with reference to accompanying drawing, embodiments of the present invention are described.Fig. 1 is that the master of the automatic bobbin winder 60 of one embodiment of the present invention looks skeleton diagram.Fig. 2 means the front view of the summary of the winding unit 16 that automatic bobbin winder 60 possesses.Fig. 3 means the block diagram of the main composition of body control setup 11 and winding unit 16.
As shown in Figure 1, automatic bobbin winder (Yarn reeling device) 60 possesses a plurality of winding units 16 and the automatic doffer 51 of body control setup (control part) 11, configuration side by side.
Each winding unit 16 constitutes, and can make to be wound up into when traversing by the drum 41 that traverses from the yarn 20 for spool 21 unwindings to batch on pipe, forms package 30.In addition, winding unit 16 possesses the yarn clearer (yarn quality analyzer) 42 that the thickness of mobile yarn 20 etc. is monitored, yarn clearer 42 constitutes when the defective of yarn 20 being detected and can be removed.
Below, the formation of winding unit 16 is specifically described.As shown in Figure 2, winding unit 16 constitutes, in for spool 21 and the yarn mobile route between drum 41 of traversing, from configure successively apparatus for unwinding 12, tension applying device 13, piecing devices 14 and yarn clearer 42 for spool 21 sides.
Apparatus for unwinding 12 is, makes to cover for the limiting part 40 on the core pipe of spool 21 and yarn 20 from for the unwinding interlock of spool 21 and descend, and thus yarn assisted from the unwinding for spool 21.40 pairs of limiting parts by from for the rotation of the yarn 20 of spool 21 unwindings with centnifugal force and the air ring that forms on the top for spool 21 contacts, the size of this air ring is controlled to be suitably, assist thus the unwinding of yarn 20.Possesses the graphic sensor of omission for detection of above-mentioned conical surface section for spool 21 near limiting part 40.When this sensor detects the decline of conical surface section, it is followed and carries out the control that for example by cylinder (omitting diagram), above-mentioned limiting part 40 descended.
The yarn 20 of 13 pairs of movements of tension applying device is given the tension force of regulation.As tension applying device 13, for example can use the tension applying device with respect to the gate-type of fixed fingers configuration activities broach.The broach of active side for example can rotate by constituting helicoid screw actuator, so that broach is each engagement or open state.
Can give certain tension force to the yarn 20 of reeling by this tension applying device 13, can improve the quality of package 30.In addition, as tension applying device 13, except the tension applying device of above-mentioned gate-type, for example can also adopt the tension applying device of disc type.
Yarn clearer 42 yarn faults detected and the yarn that carries out when cutting off or from for the broken yarn the unwinding of spool 21 time etc., piecing devices 14 will carry out joint for the yarn under working of spool 21 sides and the upper yarn of package 30 sides.As this piecing devices that upper yarn and yarn under working carried out joint, can adopt the piecing devices or the mechanical piecing devices that use the fluids such as pressurized air.
Yarn clearer 42 possesses: yarn clearer head 49, dispose the graphic sensor of omission for detection of the thickness of yarn 20; With analyzer 47, the thickness of yarn signal of this sensor output is processed.Yarn clearer 42 constitutes, and by the thickness of yarn signal from the sensor is monitored, detects thus the yarn faults (yarn defect) such as slubbing.Be provided with clipper 39 near yarn clearer head 49, this clipper 39 is used for when yarn clearer 42 detects yarn faults cutting continuous strand 20 at once.
Downside and upside at piecing devices 14 are provided with: yarn under working guiding tube 25 catches for the yarn under working of spool 21 sides to piecing devices 14 guiding; With upper yarn guiding tube 26, catch package 30 sides upper yarn and to piecing devices 14 guiding.Yarn under working guiding tube 25 and upper yarn guiding tube 26 constitute respectively and can rotate centered by axle 33,35.Be formed with at the front end of yarn under working guiding tube 25 and attract mouthfuls 32, possess suction nozzle 34 at the front end of upper yarn guiding tube 26.Yarn under working guiding tube 25 and upper yarn guiding tube 26 are connected with respectively suitable negative pressure source, make to attract mouth 32 and suction nozzle 34 to produce attraction stream, can attract to catch the loose thread of yarn and yarn under working.
At a pair of reel cage arm 61,62 front end, swinging strut 63,64 is installed.This swinging strut 63,64 is configured to mutually face, and respectively via omitting graphic bearing support for rotating.In this consisted of, by installing and batch pipe 22 being clipped in mode between two swinging struts 63,64, this can be batched thus pipe 22 can be supported on reel cage 23 rotatably.
The drum 41 that traverses is configured near above-mentioned reel cage 23, is supported as rotating.Be formed with on the outer peripheral face of drum 41 that traverses be used to make yarn 20 with the amplitude of regulation toward the screw-shaped of the double action groove that traverses.Traversing links the output shaft that bulging CD-ROM drive motor 53 is arranged on drum 41, controls drum CD-ROM drive motor 53 by motor control section 74.Motor control section 74 controls the rotation of drum CD-ROM drive motor 53 according to the signal from unit controls section 70.When the drum 41 of traversing is driven by drum CD-ROM drive motor 53, make batching of contact with this outer peripheral face that traverses drum 41 manage 22 or the driven rotation of package 30.
Dispose bulging rotation sensor 73 near the drum 41 that traverses, this drum rotation sensor 73 is electrically connected to unit controls section 70.This drum rotation sensor 73 for example constitutes rotary encoder, when traversing the every rotation predetermined angular of drum 41, to unit controls section 70 output rotational pulse signals.The pulse count of 70 pairs of unit specified times of unit controls section is carried out instrumentation, can obtain thus the rotating speed of the drum 41 that traverses.
Then, the control of each winding unit 16 described.As shown in Figures 2 and 3, package rotation sensor (package tachometry section) 72, drum rotation sensor (batch length measurment section) 73 and motor control section 74 are connected with unit controls section 70.
Above-mentioned ROM stores the control program of controlling for each of winding unit 16 being consisted of (such as motor control section 74 etc.).Above-mentioned CPU constitutes, and reads above-mentioned RAM by the control program that ROM is stored and carries out, and can control and suitably carry out the coiling of yarn each formation thus.In other words, by the cooperation of above-mentioned hardware and software, build in unit controls section 70 thus and be used for batching control part 75 to what the coiling of yarn was controlled.
In addition, batch control part 75 except above-mentioned, unit controls section 70 also possesses alarm judging part 76, and this alarm judging part 76 carries out the judgement whether package becomes malrotation.In addition, about the detailed content of this judgement with aftermentioned.
Winding unit 16 is such as possessing the alarm section 77 that can give the alarm by light or sound etc.As the concrete configuration example of this alarm section 77 as considering lamp or buzzer phone etc.This alarm section 77 is electrically connected to said units control part 70.In this consisted of, in the situation that above-mentioned alarm judging part 76 is judged as the malrotation that package occurs, unit controls section 70 made it produce alarm to alarm section's 77 output warning signals, can cause operator's attention.
As Fig. 1 and shown in Figure 3, above-mentioned body control setup 11 possesses theoretical package calculating part 27, operational part 17, display part 18 and enter key 19.In addition, body control setup 11 and unit controls section 70 similarly possess CPU, ROM, RAM and I/O port (threshold value efferent, batch length input part, input and output section) 15.
The I/O port 78 of the I/O port one 5 of body control setup 11 possesses via suitable order wire and each winding unit 16 unit controls section 70 is connected.Consist of by this, body control setup 11 can send various Yarn reeling conditions to the unit controls section 70 of each winding unit 16, and sets this Yarn reeling condition.In addition, body control setup 11 constitutes, and can receive from the unit controls section 70 of each winding unit 16 information (Yarn reeling condition information) relevant to current Yarn reeling situation this winding unit 16.
Consist of by this, can manage uniformly by a plurality of winding units 16 that 11 pairs of automatic bobbin winders 60 of body control setup possess.Specifically, body control setup 11 can send and set various Yarn reeling conditions to the unit controls section 70 of each winding unit 16.And body control setup 11 constitutes, and can receive from the unit controls section 70 of each winding unit 16 information relevant to current Yarn reeling situation this winding unit 16.
As the Yarn reeling condition that winding unit 16 is set, such as existing and the yarn variety of reeling, coiling speed, number, coiling tension, package shape, the relevant project of package required length of yarn, weight of package and yarn faults etc. that forms.In addition, as the 11 Yarn reeling condition informations that send from winding unit 16 to the body control setup, such as the situation occurred that batches length, broken yarn of the rotating speed of the rotating speed that has current package 30, the current drum 41 that traverses, current package 30 and the detected status of yarn faults etc.
Specifically, the operator makes the display part 18 of body control setup 11 show Yarn reeling condition setting menu by suitable operation, and carries out the numerical value input by enter key 19, can set the Yarn reeling condition thus.In addition, the setting value relevant to the Yarn reeling condition can individually be specified each winding unit 16 and send, also can send uniformly whole winding units 16.
Then, illustrate the formation that the situation of malrotation detects has been occured in package.
Before the beginning winding yarn, the operator is input to the project that needs in above-mentioned Yarn reeling condition in body control setup 11.Then, the theoretical package calculating part 27 of body control setup 11, according to the information (yarn variety of for example reeling (number), package shape and package density (proportion)) of needs in the project that sets, obtain relation between Yarn reeling length and theoretical roll diameter by calculating.That is, in the situation that with theoretical roll diameter be made as D, Yarn reeling length is made as L, theoretical roll diameter D can use function F and be expressed as D=F (L).In addition, theoretical package calculating part 27 constitutes, and decides this function F by calculating.
In the present embodiment, theoretical roll diameter and batch relation between length is not measured value but obtain theoretically according to the information of Yarn reeling condition.In addition, in the situation that present embodiment forms the package of cone shape like that, one is distolateral different with another distolateral diameter, but can be with any one diameter in larger diameter side and smaller diameter side as theoretical roll diameter, also can be with the diameter of axial middle body as theoretical roll diameter.
In addition, as shown in above-mentioned formula, theoretical roll diameter D can show as and will batch the function of length L as parameter.Therefore, after obtaining once above-mentioned function F by calculating, by obtaining this function F with respect to the functional value that batches length L, can obtain thus the theoretical roll diameter D that batches the moment of length L at this.
Then, casehistory is obtained the method for the relation (namely, above-mentioned function F) between Yarn reeling length and theoretical roll diameter.In this example, use the information of yarn variety, package shape and package density (proportion) when calculating.
Below explanation consideration method, at first, can access the weight of per unit length according to yarn variety, therefore by with the weight of per unit length with batch length L and multiply each other, can access the weight of the yarn of reeling.Then, the weight of yarn divided by package density (proportion), can be accessed the shared volume of yarn of reeling.Afterwards, by utilizing known diameter and the traversing amplitude of batching pipe 22, calculate in order to realize the radial wall thickness of the needed thread layers of above-mentioned volume according to geometric relation, can obtain theoretical roll diameter thus.The theoretical package calculating part 27 of body control setup 11, in the moment of having been inputted the Yarn reeling condition by the operator, calculate as described above the relation (function F) between Yarn reeling length and theoretical roll diameter, and make resulting result store in the memory storages such as RAM.
The operator after body control setup 11 has been set various conditions, indication batches beginning, each winding unit 16 begins to reel thus.In this Yarn reeling, the bulging rotation sensor 73 of each winding unit 16 is when traversing the every rotation predetermined angular of drum 41, just to unit controls section's 70 output pulse signals (drum pulse).Unit controls section 70 counted this drum pulse from the moment of batching beginning of yarn, can access thus the cumulative number of drum 41 rotations of traversing from yarn is begun to reel to bare bobbin.
Then, above-mentioned cumulative number and the drum 41 that the traverses length of yarn of reeling that often rotates a circle is multiplied each other in unit controls section 70, calculates thus to batch length (playing the length of yarn of reeling till current from beginning to form package).In addition, the length of yarn that the drum 41 that traverses often rotates a circle is intrinsic constant for the drum 41 of traversing, and is pre-set in unit controls section 70.So, constitute in the present embodiment, the traverse rotation of drum 41 of 73 pairs of rotation sensors of drum detects, and obtains thus the length of batching of yarn, and therefore drum rotation sensor 73 can work as batching length measurment section in fact.
In addition, the length of batching that will obtain of unit controls section 70 is exported to the I/O port one 5 (as the Yarn reeling condition information) of body control setup 11 from the I/O port 78 of winding unit 16.Process owing to repeating output that this batches length with separating shorter time gap, therefore body control setup 11 is almost inputted the up-to-date length of batching in each winding unit 16 in real time.
In addition, the operator in the information of body control setup 11 inputs, comprises coiling speed (length of yarn that time per unit is reeled) before the beginning winding yarn.Body control setup 11 stores the coiling speed of inputting in the memory storage such as RAM, and this coiling speed is sent to each winding unit 16 (unit controls section 70).The unit controls section 70 of each winding unit 16 controls via batching 74 pairs of bulging CD-ROM drive motor 53 of control part 75 and motor control section, in order to can come winding yarn with the coiling speed that receives.
In addition, set theoretical package calculating part 27 in body control setup 11 comes theory of computation package rotating speed according to this coiling speed and theoretical roll diameter.In addition, theoretical package rotating speed is according to above-mentioned theory roll diameter and coiling speed and the rotating speed of the package of obtaining theoretically.
Casehistory is obtained the method for theoretical package rotating speed.At first, the length of yarn that uses the drum 41 that traverses often to rotate a circle is obtained the rotating speed of the drum 41 that traverses that needs in order to realize above-mentioned coiling speed.Then, the relative theoretical roll diameter D of length L that batches during with the diameter of the rotating speed of the resulting drum 41 that traverses, the drum 41 that traverses and with mensuration calculates, and can access thus theoretical package rotating speed.
In addition, as described above, in body control setup 11, obtain successively the up-to-date length L of batching in each winding unit 16.The theoretical package calculating part 27 of body control setup 11 constitutes, and when the value of batching length L in each winding unit 16 is updated at every turn, just recomputates theoretical roll diameter and theoretical package rotating speed in this winding unit 16.
Relation between Fig. 4 representation theory package rotating speed and roll diameter.Fig. 4 is the chart that the relation between alert threshold and roll diameter is described conceptually.The transverse axis of Fig. 4 represents roll diameter, and the longitudinal axis represents rotating speed.
In the situation that with certain coiling speed winding yarn (drum 41 that traverses is driven with certain rotating speed), as shown in Figure 4, theoretical package rotating speed is monotone decreasing lentamente corresponding to the increase of roll diameter.That is, reel for yarn around the diameter of initial stage package less, the anglec of rotation of the package 30 that the drum 41 that traverses often rotates a circle is larger, the package rotating speed illustrates higher value as a result.On the other hand, when become reel for yarn around later stage the time, it is large that the diameter of package becomes, the anglec of rotation of the package 30 that the drum 41 that traverses often rotates a circle diminishes, so the package rotating speed illustrates lower value.
In addition, the body control setup 11 of present embodiment decides alert threshold according to this theory package rotating speed, and this alert threshold becomes the judgment standard of the malrotation that whether produces package.This alert threshold for example can be considered to be made as with the value after multiplying each other with theoretical package rotating speed less than 1 requirement ratio (X%).In addition, preferably constitute, the operator for example operates by the enter key 19 to body control setup 11, can change thus this ratio (X value).
When theoretical package rotating speed changed at every turn along with the coiling propelling in each winding unit 16, body control setup 11 recomputated alert threshold at any time.In addition, Fig. 4 also is illustrated in as described above and theoretical package rotating speed and certain ratio is multiplied each other and the passing of this alert threshold when determining alert threshold.Alert threshold is followed the variation of theoretical package rotating speed and is changed smoothly.Therefore, any time in batching the way, can both use suitable alert threshold and judge rightly and have or not the malrotation that package occurs.
The I/O port 78 of the I/O port one 5 of the alert threshold slave member control apparatus 11 that calculates by winding unit 16 is input to unit controls section 70.Unit controls section 70 stores the alert threshold of inputting in the memory storages such as RAM.
On the other hand, in Yarn reeling, when the every rotation predetermined angular of package 30, package rotation sensor 72 is just to unit controls section 70 output rotation detection signals (impulse singla).Unit controls section 70 counts above-mentioned impulse singla in the specific time interval, obtains thus the package rotating speed.In addition, in the following description, the package rotating speed that sometimes will so obtain is called actual package rotating speed.
Fig. 4 represents two examples of actual package rotating speed.As shown in this chart, according to the actual package rotating speed that measured value obtains, usually almost consistent with theoretical package rotating speed.But for example when the bearing that above-mentioned swinging strut 63,64 is supported produced fault, package 30 became and can not normally rotate.In this case, actual package rotating speed sharply reduces, and becomes less than alert threshold.
The alarm judging part 76 that unit controls section 70 possesses compares actual package rotating speed and above-mentioned alert threshold in the coiling of yarn.If actual package rotating speed is more than alert threshold, mean that the rotation of package is good, so alarm judging part 76 continues above-mentioned comparison process.On the other hand, when actual package rotating speed during less than alert threshold, alarm judging part 76 is to alarm section 77 output warning signals.When being transfused to warning signal, alarm section 77 is actual produces alarms, informs abnormal generation to the operator.Thus, the generation of the malrotation that the operator can the early detection package can be carried out suitable disposal.
In addition, in the situation that alarm judging part 76 produces warning signals (namely, detect the generation of the malrotation of package), batch control part 75 and via motor control section 74, bulging CD-ROM drive motor 53 is stopped immediately.By coiling is ended immediately, the drum 41 of can avoiding traversing will be rotated driving to the package 30 that can not normally rotate forcibly, can prevent the damage of package 30 or the overload of drum CD-ROM drive motor 53.
In addition, in the present embodiment, consider that the interference that unit controls section 70 carries out controls, and determine the time interval the impulse singla of package rotation sensor 72 counted in order to obtain above-mentioned actual package rotating speed.
Below, be briefly described disturbing to control.Reel for yarn around in, become integral multiple or integer divides for the moment at the rotating speed of traverse drum 41 and package, the cycle synchronisation of batching of traverse cycle and package is concentrated overlapping so-called overlapping coiling and produce the yarn of reeling on same position.In the package that has so produced overlapping coiling, overlapping winding yarn is wound around each other, produces the problem of broken yarn etc. when existing yarn to package to carry out unwinding in subsequent handling.Therefore, in order not produce this overlapping coiling, known following method: near the diameter of reeling of overlapping, make the rotation of the drum 41 that traverses increase and decrease sharp speed, slide and make package and traverse to produce between drum 41, make the yarn path of the yarn that traverses disperse and reel.The method is disturbed control exactly.
As mentioned above, disturb to control package 30 is slided on the drum 41 that traverses, therefore in its process, may produce the state that actual package revolution ratio reduces usually.Therefore, supposing in the situation that the speed of this moment is measured as actual package rotating speed, might will be only by disturbing the reduction mistake of controlling the package rotating speed that causes to be judged as the package malrotation.
Therefore, in the present embodiment, will in order to obtain actual package rotating speed to the time interval that the impulse singla of package rotation sensor 72 is counted, be made as the time corresponding with the velocity variations cycle of controlling based on interference.By so fully guaranteeing gate time, can suppress thus the impact of the phenomenon of package rotating speed moment reduction owing to disturbing control, can avoid the erroneous judgement of package malrotation disconnected.
In addition, illustrated that 76 pairs of actual package rotating speeds of alarm judging part and alert threshold compare in above-mentioned, if but say scrupulously, be the suitable pulse count of the rotation amount that obtains by the length with the rotating speed that obtains as alert threshold and above-mentioned time interval is multiplied each other of alarm judging part 76 and compare in the count value of the pulse of the package rotation sensor 72 of the actual instrumentation of above-mentioned time interval, judge whether thus to occur the malrotation of package.But on reality, above-mentioned result also can say rotating speed is compared each other.
As described above, the automatic bobbin winder 60 of present embodiment possesses winding unit 16 and body control setup 11.Be provided with the drum 41 that traverses in winding unit 16.In addition, winding unit 16 makes the driven rotation of package 30 carry out the operation of batching of yarn by the drum 41 that traverses.11 pairs of winding units 16 of body control setup are controlled.Body control setup 11 possesses theoretical package calculating part 27 and operational part 17.27 pairs of theoretical package rotating speeds of theoretical package calculating part calculate.In addition, operational part 17 decides the alert threshold of malrotation for the judgement package according to above-mentioned theory package rotating speed.
Therefore thus, can automatically set alert threshold, can determine neatly suitable alert threshold and use automatic bobbin winder 60.
In addition, in the automatic bobbin winder 60 of present embodiment, above-mentioned theory package calculating part 27 comes theory of computation roll diameter according to the Yarn reeling condition, and comes theory of computation package rotating speed according to above-mentioned theory roll diameter and Yarn reeling speed.
Thus, can calculate the theoretical package rotating speed corresponding with the Yarn reeling condition.In addition, for example can also easily tackle the change of the Yarn reeling condition that accompanies with batch change of package.
In addition, in the automatic bobbin winder 60 of present embodiment, the package shape of the yarn variety that the Yarn reeling Conditional Include is reeled and formation.
Thus, theory of computation roll diameter correctly.
In addition, in the automatic bobbin winder 60 of present embodiment, winding unit 16 also possesses bulging rotation sensor 73 and I/O port 78.The length that 73 pairs of yarns of drum rotation sensor are wound is namely batched length and is measured.I/O port 78 will rouse the length of batching of rotation sensor 73 mensuration and export to the operational part 17 of body control setup 11.In addition, body control setup 11 possesses I/O port one 5.The length of batching of I/O port 78 outputs is transfused to I/O port one 5.In addition, the theoretical package calculating part 27 of body control setup 11 is according to the Yarn reeling condition and batch length and come theory of computation roll diameter, and calculates theoretical package rotating speed when batching length measurment according to this theory roll diameter and Yarn reeling speed.
Thus, from Yarn reeling begin till finish during, can with the increase of batching length changing warning threshold value everywhere together.Therefore, can detect with more suitable alert threshold the malrotation of package.
In addition, in the automatic bobbin winder 60 of present embodiment, when theoretical package rotating speed changes at every turn, all upgrade alert threshold.
That is, yarn batch the way in the package rotating speed can constantly change, still by becoming above-mentioned formation, can both correctly detect at any time thus the malrotation of package 30.
In addition, the automatic bobbin winder 60 of present embodiment consists of as follows.That is, the I/O port one 5 output alert thresholds of body control setup 11.Winding unit 16 possesses I/O port 78, package rotation sensor 72, alarm judging part 76 and alarm section 77.Alert threshold is transfused to I/O port 78.Package rotation sensor 72 is measured the rotating speed of package.The rotating speed of the package that 76 pairs of alert thresholds of alarm judging part and package rotation sensor 72 measured compares and carries out the alarm judgement.77 judgements according to alarm judging part 76 of above-mentioned alarm section give the alarm.
Thus, the alarm that produces by alarm section 77 of operator and can learn in early days the situation of the malrotation that package occurs.In addition, alarm section 77 is arranged at winding unit 16, so the operator can easily determine to occur the winding unit 16 of the malrotation of package.
In addition, in the automatic bobbin winder 60 of present embodiment, 11 pairs of a plurality of winding units 16 of body control setup are controlled.
Thus, can carry out uniformly identical operation by 11 pairs of a plurality of winding units 16 of body control setup, therefore can shorten production time.
Then, the first variation of above-mentioned embodiment described.Fig. 5 illustrates the alert threshold of the first variation and the chart of the relation between roll diameter conceptually.
That is, above-mentioned embodiment constitutes, at the middle alert threshold of batching of yarn by at any time, continuous updating is new value, but constitute in this variation, form 1 package during, alert threshold only is updated 1 time.
Below, describe particularly.Before the beginning winding yarn, the theoretical package calculating part 27 of body control setup 11, half the corresponding theoretical package rotating speed that batches length to full volume the time calculates.The length (forming the required length of yarn of package) of batching when completely rolling up in addition, is transfused to body control setup 11 in advance.In addition, operational part 17 is obtained the alert threshold corresponding with this theory package rotating speed (the first alert threshold) in advance, and to unit controls section 70 outputs of winding unit 16.
Afterwards, the coiling of beginning yarn in winding unit 16.The alarm judging part 76 of winding unit 16 uses above-mentioned the first alert threshold to carry out the detection of package malrotation.
Along with the propelling of reeling, winding unit 16 increases by the length of batching of I/O port 78 outputs.But, in this variation, do not reach specified value (half the value of batching length when completely rolling up specifically) as long as this batches length, the theoretical package calculating part 27 of body control setup 11 and operational part 17 just do not carry out recomputating of theoretical package rotating speed and alert threshold.Therefore, the alarm judging part 76 of winding unit 16 before the coiling of yarn advances to a certain degree, detects the package malrotation take certain alert threshold (the first alert threshold) as benchmark.
When 11 outputs from winding unit 16 to the body control setup batch length when becoming full volume batch length over half the time, 27 pairs of the theoretical package calculating parts of the body control setup 11 corresponding theoretical package rotating speed of length that batches when completely rolling up calculates.In addition, 17 pairs of alert thresholds corresponding with this theory package rotating speed of operational part (the second alert threshold) calculate, and to unit controls section 70 outputs of winding unit 16.Wherein, the theoretical package rotating speed when completely rolling up and the second alert threshold also can calculate together with first alert threshold etc. before batching beginning in advance, and were stored in RAM etc.
When new alert threshold was transfused to the unit controls section 70 of winding unit 16, alarm judging part 76 used new threshold values to carry out the alarm judgement.In addition, body control setup 11 before the package 30 of this winding unit becomes full volume, does not carry out the renewal of alert threshold after having exported the second alert threshold.Therefore, in winding unit 16, at the yarn of coiling specified length and before package 30 becomes full volume, detect the package malrotation take certain alert threshold (the second alert threshold) as benchmark.
The passing of the alert threshold of this variation of graphical presentation of Fig. 5.In this variation, along with the propelling of the coiling of yarn, alert threshold is switched to two stages, and with stepped variation.In this variation that so alert threshold is upgraded by stage ground, compare the frequency that recomputates that can significantly reduce theoretical package rotating speed and alert threshold with above-mentioned embodiment, the load that therefore can suppress theoretical package calculating part 27 and operational part 17, and alleviate the traffic between body control setup 11 and winding unit 16 aspect favourable.In addition, the update times of alert threshold is not limited to 1 time, for example also can constitute, and comes (off and on) to upgrade alert threshold with the frequency more than 2 times or 3 times.
As implied above, in the automatic bobbin winder 60 of this variation, switch alert threshold corresponding to the variation of theoretical package rotating speed interimly.
Thus, the load of theoretical package calculating part 27 and operational part 17 is significantly increased, can upgrade alert threshold and use automatic bobbin winder 60 corresponding to the propelling situation of the coiling of yarn.
Then, the second variation of above-mentioned embodiment described.Fig. 6 illustrates the alert threshold of the second variation and the chart of the relation between roll diameter conceptually.
In this variation, use the length of batching when completely rolling up to come theory of computation roll diameter.The length (forming the required length of yarn of package) of batching when completely rolling up is transfused to body control setup 11 in advance.The theoretical package calculating part 27 of the second variation batches length L when this is completely rolled up
FThe above-mentioned formula of substitution batches the relative theoretical roll diameter D of length when obtaining with full volume
F, and by the method theory of computation package rotating speed identical with above-mentioned embodiment.In addition, carry out the decision of alert threshold by operational part 17.
Therefore, in this variation, as shown in Figure 6, begin from the coiling of yarn until reel and finish, alert threshold is all certain value.In this consisted of, therefore theoretical package rotating speed and alert threshold can further reduce the load of theoretical package calculating part 27 and operational part 17 as long as calculate 1 time just enough.In addition, as long as package 30 is batch identical, the theoretical package rotating speed when completely rolling up just becomes certain value.Therefore, in the situation that form the package of same batch by a plurality of winding units 16, as long as it is just enough to a plurality of winding unit 16 outputs to calculate the identical alert threshold of obtaining by 1 time, so also can reduce the load of operational part 17 on this meaning.
As implied above, in the automatic bobbin winder 60 of this variation, the above-mentioned theory roll diameter when theoretical roll diameter is full volume.
Thus, only by obtaining once theoretical package rotating speed according to this theory roll diameter, can access thus the alert threshold that can be applied to identical Yarn reeling condition.Therefore, the processing that theoretical package calculating part 27 and operational part 17 carry out is simplified.
Above the preferred embodiment of the present invention and variation are illustrated, but above-mentioned configuration example is if change as described below.
So long as according to theoretical package rotating speed, can decide alert threshold by method arbitrarily.For example, can replace ratio with theoretical package rotating speed and regulation to multiply each other and determine the situation of alert threshold, the value that for example changes to by deducting (biasing) regulation decides alert threshold.
Above-mentioned embodiment is not limited to form the situation of the package of cone shape, also can be applied to form the situation of the package of parallel shape.
Constitute in the above-described embodiment, winding unit 16 possesses alarm judging part 76 and alarm section 77, but also can replace this formation and constitute, and body control setup 11 possesses alarm judging part and alarm section.That is, can constitute, the package rotating speed that package rotation sensor 72 is measured is to 11 outputs of body control setup, and body control setup 11 carries out the alarm judgement uniformly, when the package malrotation being detected, and the alarm section action of body control setup 11.In this case, the situation that possesses alarm judging part 76 and alarm section 77 with each winding unit 16 is compared, and can simplify the formation of winding unit.
In the above-described embodiment, drum rotation sensor 73 is by counting to measure the length of batching of package to the rotation of the drum 41 that traverses, but also can replace this situation and constitute, and measures with the yarn speed sensor and batches length.Fig. 7 represents this formation.In addition, in the explanation of the formation of Fig. 7, sometimes for giving in the drawings identical symbol with the same or similar parts of above-mentioned embodiment, and description thereof is omitted.
Yarn speed sensor shown in Figure 7 65 is for as lower device: utilize the situation of the change that has thickness of yarn on yarn, the moving velocity at the change position of this thickness of yarn is detected, detect thus yarn speed.The signal of this yarn speed is transfused to unit controls section 70, in unit controls section 70, yarn speed is carried out integral processing, can access thus and batch length.Therefore, yarn speed sensor 65 is same with above-mentioned bulging rotation sensor 73, can work as the length measurment section of batching of batching that length measures to yarn in fact.In addition, can also constitute, possess bulging rotation sensor 73 and yarn speed sensor 65 both sides, measure more accurately and batch length.
In the above-described embodiment, as the Yarn reeling condition of batching the relation (function F) between length and theoretical roll diameter that is used for obtaining yarn, yarn variety and the formed package shape of reeling have been used, but also can constitute, obtain theoretical roll diameter with other Yarn reeling conditions.
Above-mentioned embodiment constitutes, and theoretical package calculating part 27 and the operational part 17 of body control setup 11 calculate theoretical roll diameter and theoretical package rotating speed, and determines alert threshold.But, also can replace this formation and constitute, 70 pairs of theoretical roll diameters of unit controls section and the theoretical package rotating speed of each winding unit 16 calculate, and determine alert threshold.
Above-mentioned embodiment is not limited to automatic bobbin winder, such as being applied to the Yarn reeling devices such as spinning machinery, yarn-twisting machine.
The explanation of symbol:
11 body control setups (control part)
12 operational parts
16 winding units
27 theoretical package calculating parts
60 automatic bobbin winders (Yarn reeling device)
70 unit controls sections
72 package rotation sensors (package tachometry section)
73 drum rotation sensors (batch length measurment section)
76 alarm judging parts
77 alarm sections
Claims (10)
1. a Yarn reeling device, is characterized in that,
Possess:
Winding unit is provided with the drum of rotation, makes the driven rotation of package carry out the operation of batching of yarn by above-mentioned drum; With
Control part is controlled above-mentioned winding unit,
Above-mentioned control part possesses: theoretical package calculating part, theory of computation package rotating speed; And operational part, decide the alert threshold of malrotation for the judgement package according to above-mentioned theory package rotating speed.
2. Yarn reeling device according to claim 1, is characterized in that,
Above-mentioned theory package calculating part comes theory of computation roll diameter according to the Yarn reeling condition, and comes theory of computation package rotating speed according to above-mentioned theory roll diameter and Yarn reeling speed.
3. Yarn reeling device according to claim 2, is characterized in that,
Above-mentioned theory roll diameter when the above-mentioned theory roll diameter is full volume.
4. Yarn reeling device according to claim 2, is characterized in that,
The yarn variety that above-mentioned Yarn reeling Conditional Include is reeled and the package shape of formation.
5. Yarn reeling device according to claim 1, is characterized in that,
Above-mentioned winding unit also possesses:
Batch length measurment section, the length that yarn is wound is namely batched length and is measured; With
Batch the length efferent, export the above-mentioned above-mentioned length of batching that length measurment section measures of batching,
Above-mentioned control part possesses the length of batching input part, and the above-mentioned above-mentioned length of batching of batching length efferent output is transfused to this and batches the length input part,
Above-mentioned theory package calculating part comes theory of computation roll diameter according to Yarn reeling condition and the above-mentioned length of batching, and calculates theoretical package rotating speed when batching length measurment according to this theory roll diameter and Yarn reeling speed.
6. Yarn reeling device according to claim 1, is characterized in that,
When above-mentioned theory package rotation speed change, above-mentioned alert threshold is updated.
7. Yarn reeling device according to claim 1, is characterized in that,
Corresponding to the variation of above-mentioned theory package rotating speed, switch above-mentioned alert threshold interimly.
8. Yarn reeling device according to claim 1, is characterized in that,
Above-mentioned control part possesses the threshold value efferent of the above-mentioned alert threshold of output,
Above-mentioned winding unit possesses:
The threshold value input part is transfused to above-mentioned alert threshold;
Package tachometry section, the rotating speed of mensuration package;
The alarm judging part, the package rotating speed that above-mentioned alert threshold and above-mentioned package tachometry section are measured compares, and carries out the alarm judgement; And
Alarm section gives the alarm according to the judgement of above-mentioned alarm judging part.
9. Yarn reeling device according to claim 1, is characterized in that,
Above-mentioned control part is the body control setup that a plurality of winding units are controlled.
10. an alert threshold determining method that is used for the malrotation detection of package, is characterized in that, comprising:
Theoretical roll diameter calculation process is according to the yarn variety of reeling, package shape and the required length of yarn of formation package, theory of computation roll diameter;
Theoretical package rotating speed calculation process, according to the above-mentioned theory roll diameter, theory of computation package rotating speed; And
Alert threshold determines operation, according to above-mentioned theory package rotating speed, determines alert threshold.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009124663A JP2010269915A (en) | 2009-05-22 | 2009-05-22 | Yarn winding device and alarm threshold value determining method for detecting rotation failure of package |
| JP2009-124663 | 2009-05-22 | ||
| PCT/JP2010/003219 WO2010134294A1 (en) | 2009-05-22 | 2010-05-12 | Yarn winding device and alarm threshold value determination method for detection of rotational faults in a package |
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| CN102421687A CN102421687A (en) | 2012-04-18 |
| CN102421687B true CN102421687B (en) | 2013-05-08 |
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| EP (1) | EP2433889B1 (en) |
| JP (1) | JP2010269915A (en) |
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| JP2013067916A (en) * | 2011-09-22 | 2013-04-18 | Murata Mach Ltd | Spinning machine, winding device and textile machine |
| JP2013249189A (en) * | 2012-06-04 | 2013-12-12 | Murata Machinery Ltd | Device of winding thread, method of winding thread, and system of winding thread |
| JP2014009405A (en) * | 2012-06-27 | 2014-01-20 | Murata Mach Ltd | Spinning machine |
| JP2016011468A (en) * | 2014-06-27 | 2016-01-21 | 村田機械株式会社 | Textile machine, textile machine system and method for updating set value in textile machine |
| CN106335817A (en) * | 2016-08-19 | 2017-01-18 | 武汉理工大学 | Automatic winding machine |
| CN108439063A (en) * | 2017-02-16 | 2018-08-24 | 常州百鼎纺织科技有限公司 | Grooved drum type spooler intelligence control system |
| JP2018177447A (en) * | 2017-04-11 | 2018-11-15 | 村田機械株式会社 | Condition display device and yarn winding machine |
| JP7287751B2 (en) * | 2017-04-11 | 2023-06-06 | 株式会社豊田自動織機 | Illegal doffing detection device for ring spinning machine |
| JP2019137480A (en) * | 2018-02-07 | 2019-08-22 | 村田機械株式会社 | Yarn winder and yarn winding method |
| CN111232755B (en) * | 2020-01-17 | 2021-08-13 | 江苏恒力化纤股份有限公司 | Method for automatically adjusting coil diameter of wire coil to avoid abnormal formation of wire coil |
| JP2024024801A (en) | 2022-08-10 | 2024-02-26 | 村田機械株式会社 | automatic winder |
| CN219590185U (en) * | 2023-02-10 | 2023-08-25 | 锐捷网络股份有限公司 | Meshbelt check out test set |
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| WO2010134294A1 (en) | 2010-11-25 |
| EP2433889A1 (en) | 2012-03-28 |
| EP2433889A4 (en) | 2013-03-06 |
| CN102421687A (en) | 2012-04-18 |
| EP2433889B1 (en) | 2014-01-29 |
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