EP2883825A1 - Procédé de fonctionnement d'un bobinoir et bobinoir - Google Patents

Procédé de fonctionnement d'un bobinoir et bobinoir Download PDF

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Publication number
EP2883825A1
EP2883825A1 EP14003960.3A EP14003960A EP2883825A1 EP 2883825 A1 EP2883825 A1 EP 2883825A1 EP 14003960 A EP14003960 A EP 14003960A EP 2883825 A1 EP2883825 A1 EP 2883825A1
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EP
European Patent Office
Prior art keywords
cop
thread length
digital image
winding
copier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14003960.3A
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German (de)
English (en)
Other versions
EP2883825B1 (fr
Inventor
Stefan Bungter
Franz-Josef Flamm
Peter Hennig
Marc Küppenbender
Alexander Marx
Wolf-Michael Ruh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Germany GmbH and Co KG
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Filing date
Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP2883825A1 publication Critical patent/EP2883825A1/fr
Application granted granted Critical
Publication of EP2883825B1 publication Critical patent/EP2883825B1/fr
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Classifications

    • 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
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • 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

Definitions

  • the present invention relates to a method for operating a winding machine and a winding machine for carrying out the method.
  • the DE 39 42 304 A1 discloses a measuring device for determining the gam volume of a cop.
  • This measuring device has a number of individual sensors, each consisting of a light transmitter and an opposite light receiver. As the cop passes the sensors, multiple scans are performed on the sensors. In this way, despite the one-dimensional design of the individual sensors, at least one coarse, two-dimensional image of the cop is generated. Based on this two-dimensional image, the yarn volume of the cop is determined. Due to the yarn volume defined control operations are to be derived. By comparison with the yarn volume of an error-free wound reference copier, the cop is assigned to specific winding stations and / or method steps. Due to the size determined, it is possible, for example, to assign different cops to different gamparts.
  • the EP 1 961 687 A2 relates to the use of a digital camera for evaluating a cop.
  • the gap is determined on the sleeve, and it is decided from this information whether the cop is transported to a cop preparation station or to a cleaning station for removal of residual wrapping on the sleeve.
  • the digital image is subjected to edge filtering.
  • the DE 198 36 071 A1 the creation of a digital image for the detection of residual thread on a copier sleeve by means of a CCD video camera. Both documents use an imaging sensor.
  • the DE 10 2007 058 857 A1 discloses a winding unit of a winding machine.
  • cops that contain relatively few yarn volumes are rewound to large-volume cheeses.
  • the yarn is subjected to yarn tensile forces which limit the withdrawal speed of the yarn and thus the winding speed of the winding machine.
  • These yarn tension forces can increase to a multiple of the initial yarn tension in the course of a cop trip, if no effective countermeasures are taken.
  • so-called balloon limiters or take-off accelerators are known.
  • Such a take-off accelerator has a tubular element which is cone-shaped in the region of its lower edge and is lowered over the cop during the winding process so that the cone is always positioned in the region of the so-called winding cone of the cop.
  • an optical sensor is arranged on the cone-shaped end of the tubular element, which measures the distance to the winding cone of the cop. A precise lowering of the tubular element over the winding cone is essential for the reliable operation of the take-off accelerator. Therefore, the take-off accelerators at each winding station on a sensor for detecting the winding cone of the cop.
  • the DE 42 17 059 A1 discloses a transport system for the traceable transport of cops to the winding units.
  • the cops are arranged on transport plates, which are provided with barcodes. In this way, each cop is individually identifiable.
  • each cop by means of a computer or a control unit information or properties can be assigned. Such information may, for example, relate to the degree of copeing of the cops. Depending on the amount of thread, the winding speed can then be controlled.
  • the DE 43 19 173 A1 discloses a conveyor belt with carriers for the positive transport of transport plates with cops or Kop sleeves.
  • the drivers engage in recesses on the transport plates.
  • Such transport systems in which the cops are guided at fixed positions of a conveyor belt or a transport chain, can be a tracking of the cops within the Machine too. That is, it is possible to understand where a particular cop is located within the machine.
  • a method for operating a winder with a plurality of winding units and a transport system for the traceable transport of spinning heads to the winding units is proposed.
  • a digital image of a reference copier with a known thread length is created by means of an imaging sensor, for example a CCD or CMOS sensor, and a variable representing the cross-sectional area of the package of the reference copier is determined.
  • the thread length can be known from the upstream spinning process, or is determined to carry out the process.
  • To determine the thread length on the reference scope the reference scope and the sleeve of the reference scope can be weighed.
  • the thread length can be determined from the weight of the Gam moments of the Referenzkopses and the yarn number. If necessary, the yarn count can be determined from a thread piece of defined length.
  • the inventive method further includes determining the ratio of the thread length of the Referenzkopses and the cross-sectional area of the package of the Referenzkopses representing size.
  • a digital image is generated by means of an imaging sensor.
  • the same imaging sensor is used to create the digital image of the reference scope and the digital images of the other cops.
  • different sensors can be used.
  • the detection of withdrawn during winding of the cop yarn length is required. According to the information of the digital image of the cop, the length of thread drawn from the cop and the determined ratio of the thread length of the Referenzkopses and the Cross-sectional area of the yarn package of the Referenzkopses representing size linked together, and the winder is controlled in dependence on the result of the linkage.
  • a digital image of a reference sleeve of a cop is also created by means of an imaging sensor.
  • the determination of the size representing the cross-sectional area of the package of the reference copier can be made from information from the digital image of the reference copier and the digital image of the reference sleeve.
  • the additional image of a reference sleeve makes it easier to separate the package from the sleeve.
  • the yarn package of the reference copier is assigned pixels of the digital image and the number of these pixels is used as the size representing the cross-sectional area of the yarn body.
  • the digital image of the reference scope is created against a high-contrast background, the copier's pixels can be easily determined by a brightness or gray scale comparison.
  • the pixels of the reference sleeve can be determined.
  • the image of the reference sleeve is created under the same conditions, that is, with equal intervals, the same triggering and so on. With this information, the pixels of the package of the Referenzkopses can be easily distinguished from the pixels of the cop.
  • well-known edge filter algorithms can be used to determine the Gam moments, but this requires significantly more computing power.
  • pixels of the respective digital image can also be assigned to the package of the cops fed to the transport system for further processing. These images are also advantageously created under the same conditions.
  • From the information of the digital image of the cop can advantageously be determined depending on the longitudinal extent of the cop a size representing the diameter of the cop. In this way, the position and shape of the winding cone of the cop can be determined. Furthermore, deviations from the regular cop shape, which can arise due to errors in spinning, can be detected.
  • the method according to the invention is from the information of the digital image of the cop, the thread length deducted from the cop and the determined ratio of the thread length of the Referenzkopses and representing the cross-sectional area of the Gam stressess Referenzkoropses size changing during unwinding shape of the cop continuously determined.
  • the dots of the digital image can be assigned to the yarn body of the cop and, during unwinding, successive assignments of pixels to the package can be removed in accordance with the winding scheme of the cop.
  • the yarn layers of the cop are built up along the winding cone.
  • the cop is removed accordingly. That is, the degradation takes place along the winding cone, so that the assignment of the pixels along the winding cone to the package is successively removed.
  • the position of the winding cone which changes during unwinding can be determined at any time. Therefore, a take-off accelerator is advantageously controlled at the winding station as a function of the changing shape of the cop. According to the invention, this eliminates the need for a trigger accelerator according to the prior art sensor.
  • the control of the trigger accelerator according to the invention also works reliably if the cop shape deviates from the normal cop shape due to errors in spinning.
  • the remaining thread length on the cop is determined during unwinding from the information of the digital image of the cop, the length of thread drawn from the cop and the determined ratio of the thread length of the reference copier and the size representing the cross-sectional area of the Gam stressess of the reference cop. This allows the current remaining thread length to be recorded on the cops of a lot.
  • a batch outlet is thus controlled as a function of the detected residual thread length. This means that at the end of a game it is possible to decide at which winding stations the remaining heads of a batch will be processed so that full packages can be wound.
  • the invention further relates to a winding machine for carrying out the method according to the invention with a plurality of winding units and a transport system for traceable transport of spinning heads to the winding units, wherein at the entrance of the transport system, an imaging sensor for creating digital images of the transport system supplied cops is arranged and means for Detecting the withdrawn during winding of a cop thread length are available.
  • control and evaluation means are provided, which are designed, by means of a digital image of a Referenzkopses a cross-sectional area of the package of the Referenzkopses representing size and by means of the predetermined The length of the reference copier to determine the ratio of the thread length of the Referenzkopses and representing the cross-sectional area of the Gamissons Referenzkoopses size, the information of a digital image of a cop, the withdrawn from the Kops thread length and the determined ratio of the thread length of the Referenzkopses and the cross-sectional area of the Gamissons link the size representing the reference copier and control the winder depending on the result of the link.
  • a reflective background can be arranged opposite to the imaging sensor so that the digital images of the cops can be created against the background, and there can be a light source which is arranged such that when the digital images of the cops are created Light source and the background are located on opposite sides of the cop.
  • the cops shade the light from the light source on the background. The light that hits the background outside of the cop area is reflected. In the image, the not or at least little reflective cop dark and the reflective background appears bright. This creates a strong contrast, which allows the dark pixels without costly edge filtering to assign the cop.
  • a reflective foil which reflects particularly strongly is used as the reflective background.
  • the Fig. 1 shows a winding machine 1 with a plurality of winding units 2, which are arranged between the end frames 55, 56 of the winder 1.
  • the winding machine has a central control unit 50, which is connected via a bus system 60 with the winding unit controls 40.
  • the central control unit 50 has a keyboard 52 and a display 51 for operation and display.
  • Fig. 2 is shown in side view schematically a winding unit 2 during the winding process.
  • bobbins usually produced on ring spinning machines spinning cops 9, which have relatively little yarn material, rewound to large-volume cheeses 11.
  • the finished cheeses 11 are then transferred by means of an automatically operating service unit 57, such as a cheese changer, on a machine-spooled cross-bobbin transport device 21 and transported to a machine loading side arranged Spulenverladestation or the like.
  • an automatically operating service unit 57 such as a cheese changer
  • the winder 1 is also equipped with a logistics device in the form of a bobbin and tube transport system 3.
  • a logistics device in the form of a bobbin and tube transport system 3.
  • spinning cops 9 and empty tubes 34 which are arranged in a vertical orientation on transport plates 8.
  • the routes have conveyor belts with not shown holding devices for the transport plate 8. Due to the knowledge of the movement of the conveyor belts and the position of the holding devices on the conveyor belts, the position of a specific cop within the machine can be determined at any time.
  • the delivered spinning cops 9 are doing first in an unwinding position 10, which is located in the region of the transverse transport sections 6 at the winding units 2, positioned and then rewound.
  • the individual winding units 2 have for this purpose, as is well known and therefore only hinted at various Fadenüberwachungs- and treatment facilities that not only ensure that the spinning cops 9 can be rewound to large-volume cheeses 11, but also ensure that the thread 30th is monitored for thread defects during the rewinding process and detected thread defects are cleared out.
  • Each winding unit 2 has a winding unit control 40, which is connected via the only indicated control lines with the Fadenüberwachungs- and treatment facilities and connected via the bus system 60 to the central control unit 50 and the control device 58 of the service unit 57.
  • the work stations 2 each have a winding device 24, which has a creel 18, which is movably mounted about a pivot axis 19 and is equipped with a bobbin drive device 26 and a thread-switching device 28.
  • the cheese 11 is located during the winding process with its surface on a drive roller 26 and is carried along by this frictional engagement.
  • the drive roller 26 is acted upon via a variable speed, reversible (not shown) drive means.
  • the traversing of the thread 30 during emergence onto the cross-wound bobbin 11 takes place by means of a thread-changing device 28, which has a finger thread guide 29 in the present exemplary embodiment.
  • the winding units 2 further have a thread connecting device, preferably a pneumatically operated splicing device 13 with a cutting device 43, a lower thread sensor 22, a thread tensioner 14, a thread cleaner 15 with a thread cutting device 17 and a paraffining device 16.
  • Die in Fig. 2 Spool 2 shown also has a yarn tension sensor 20.
  • the winding unit 2 is equipped with a suction nozzle 12 and a gripper tube 25, both defined are acted upon by negative pressure.
  • the suction nozzle 12 and the gripper tube 25 are connected to a machine-length vacuum crossbar 32, which in turn is in communication with a vacuum source 33.
  • a thread catching nozzle 23 which is arranged offset somewhat rearwardly with respect to the thread running path, is positioned so that the thread 30 runs in front of its mouth 42 during the winding process.
  • the thread-catching nozzle 23 is likewise connected to the vacuum cross-member 32 via an air switch 27.
  • the air switch 27 in this case has a connecting piece 35 for the thread catching nozzle 23 and a relatively voluminous discharge port 36, the mouth of which is hermetically sealed during the regular winding operation by the suction nozzle 12 positioned in the waiting position P.
  • An opening of the discharge nozzle 36 by pivoting the suction nozzle 12 ensures that the upcoming at the thread catching nozzle 23 negative pressure collapses.
  • the winding units 2 are equipped with a take-off accelerator 37, which ensures during the winding process that the yarn balloon, which is formed by the spinning cop 9 when the thread runs off, is positively influenced in the sense of a reduction of the thread tension.
  • the take-off accelerator 37 is defined by a drive 38 in the vertical direction R adjustable so that it can be moved downward during the winding process, the Abspulfort intimid the spinning cop 9 following.
  • the lower edge of the take-off accelerator 37 is always approximately at the level of the winding cone 39 of the spinning cop 10 positioned in the unwinding position 10.
  • the winding machine 1 also has an image capture device 41 arranged at the entrance of the transport system 3, which in Fig. 3 is more accurate.
  • a cop 9 is positioned by means of the transport system 3 between an imaging sensor 42 and a background 46.
  • two infrared diodes 44 and 45 for illuminating the cop 9 against the background 46 are present. That is, the infrared diodes 44 and 45 are also arranged in the region of the imaging sensor 42 so that the cop 9 is positioned between the infrared diodes 44 and 45 and the background 46.
  • the imaging sensor 42 is associated with an image processing unit 47.
  • the image processing unit 47 in turn is connected to the winding unit controllers 40 and the central control unit 50 via the bus system 60 for controlling the winder.
  • the background 46 is provided with a reflective foil.
  • the reflective foil ensures for enhanced reflection of the light emitted by the infrared diodes 44 and 45. Only the area of the background 46 shaded by the cop 9 remains dark. Thus, a strong contrast between the cop and the background is achieved on the digital image. This makes it easy to capture the pixels associated with the cop.
  • a digital image of a reference scope is required.
  • This digital image can be created with the image capture device 41 of the winder.
  • a separate image capture device 41A as in Fig. 4 is shown to use.
  • the image capture device 41A is constructed essentially the same as the image capture device 41 of the take-up winder. Accordingly, the image capture device 41A has an imaging sensor 42A for forming a digital image in front of the background 46A.
  • infrared diodes 44A and 45A are provided.
  • the digital image of the reference copier can be stored.
  • the digital image of the Referenzkopses is transmitted to control the winder to this. This can happen, for example, by means of a bus connection, not shown, or a memory card.
  • a digital image of a reference sleeve 34A is preferably created. If a separate image capture device 41A is present, the digital image of the reference sleeve is preferably created by means of this device. Alternatively, of course, the image capture device 41 of the winder 1 can be used.
  • 9 pixels of the digital image can be assigned to the package 48A of the reference cop 9A and the package 48 of the cop 9. All dark pixels belong to a Kops 9 or 9A.
  • the pixels selected in this way comprise, in addition to the package 48 or the package 48A, the pixels of the respective sleeve 34 or the pattern 34A.
  • the knowledge of the exact thread length located on the reference head is furthermore required.
  • the reference cop 9A and, after unwinding of the reference scope 9A, the sleeve 34A of the reference scope 9A can be weighed.
  • the thread length can then be calculated using the yarn number. If necessary, the gamummer can also be determined from a short reference thread of predetermined length.
  • the withdrawn thread length can be determined, for example, by integrating the rotational speed of the winding drive device 26.
  • the diameter profile of the cops 9 can be determined in the longitudinal direction.
  • the position and shape of the winding cone 39 of the cops 9 as well as errors in the Kopsonic can be detected.
  • the digital images of the cops 9 can be used to control the print-off accelerator 37.
  • the number of pixels of the package 48A of the reference scope 9A is a measure of the cross-sectional area of the gametank 48A. From the known thread length of the Referenzkopses 9A, a ratio of thread length and cross-sectional area can be determined. This ratio makes it possible, together with the drawn from the cop 9 thread length, the changing cross-sectional area of the package 48 and thus to determine the shape of the Gam emotionss constantly accurate.
  • the Fig. 6 shows the head 9 of the Fig. 5 After a certain length of thread has been deducted from the cop 9. The withdrawn thread length corresponds to the above-described relationship with the surface 49. It then remains the Restgam emotions 48B. Due to the winding principle of the cops 9, the cross-sectional area or the package 48 is always removed along the winding cone 39. In this way, the surface or the pixels, which are no longer associated with the package, can be easily tuned.
  • the Fig. 7 shows a faulty cop 9C with a constriction of the Gam stresses 48C.
  • Such cops 9C are also referred to as "Coca-Cola” copse. With the method described above, the actual shape of the cop can always be determined even during such coping during the entire unwinding process.
  • the take-off accelerator 37 can then always be controlled or lowered without an additional sensor such that the lower edge of the take-off accelerator 37 is always approximately at the level of the winding cone 39 of the spinning cop 10 positioned in the unwinding position 10.
  • the thread tension or the thread tension increases despite proper lowering of the trigger accelerator 37 with decreasing Gammenge on the cop. Therefore, the thread tension is adjusted by a thread tensioner 14 and possibly by changing the winding speed.
  • a thread tensioner 14 determines the thread tension or thread tension at each winding station by means of a yarn tension sensor 20.
  • the present invention now makes it possible to adjust the thread tensioner 14 and / or the winding speed in dependence on the position of the winding cone 39 of the cop 9 or - more generally expressed - depending on the changing shape of the cop 9, without a yarn tension sensor 20 at each winding station is arranged.
  • cops 9 are processed with different yarns and sometimes with different sleeves 34.
  • the thread length on the cops 9 is determined on the basis of the digital images of the cops 9 and on the basis of the ratio of cross-sectional area and thread length determined from the digital image of the reference scope 9A. During unwinding the withdrawn from the cops 9 thread length is detected and thus at any time determines the remaining thread length on the cop 9.
  • the total thread length of all located in the system cops 9 a lot can be determined at any time. Based on the known thread length of a full cheese and based on the already wound on the existing cross-wound yarn length can be determined on which coils at a party run the expiring lot is still processed, so that the cheeses can still be completely filled.
  • the creation of digital images of the cops 9 fed to the transport system 3 also enables batch discrimination. That is, different cops can be assigned to different lots.
  • the images give the opportunity to monitor the upstream spinning processes and to assess their quality. For example, an accumulation of defective cops can be registered.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Winding Filamentary Materials (AREA)
EP14003960.3A 2013-12-16 2014-11-25 Procédé de fonctionnement d'un bobinoir et bobinoir Active EP2883825B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013021316.9A DE102013021316A1 (de) 2013-12-16 2013-12-16 Verfahren zum Betreiben einer Spulmaschine und Spulmaschine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102013021316 Previously-Filed-Application 2013-12-16

Publications (2)

Publication Number Publication Date
EP2883825A1 true EP2883825A1 (fr) 2015-06-17
EP2883825B1 EP2883825B1 (fr) 2016-06-22

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Application Number Title Priority Date Filing Date
EP14003960.3A Active EP2883825B1 (fr) 2013-12-16 2014-11-25 Procédé de fonctionnement d'un bobinoir et bobinoir

Country Status (5)

Country Link
EP (1) EP2883825B1 (fr)
JP (1) JP6385267B2 (fr)
CN (1) CN104709770B (fr)
DE (1) DE102013021316A1 (fr)
IN (1) IN2014MU03852A (fr)

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CN105898471A (zh) * 2015-11-11 2016-08-24 乐卡汽车智能科技（北京）有限公司 一种车载音视频传输方法及系统、车载终端、服务器
CH714658A1 (de) * 2018-02-16 2019-08-30 Rieter Ag Maschf Verfahren zum Betreiben einer Spinnstelle einer Ringspinnmaschine nach einem Doffvorgang.
CN111910303A (zh) * 2020-08-27 2020-11-10 潘天德 一种基于重力变化实现定量截纱的纺织辊

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CN105947782A (zh) * 2016-06-21 2016-09-21 大津编物（无锡）有限公司 多功能络筒机
CN105947787A (zh) * 2016-06-21 2016-09-21 大津编物（无锡）有限公司 自动络筒机
CN105923462A (zh) * 2016-06-21 2016-09-07 大津编物（无锡）有限公司 新型络筒机
CN105947786A (zh) * 2016-06-21 2016-09-21 大津编物（无锡）有限公司 改进的络筒机
CN105883490A (zh) * 2016-06-21 2016-08-24 大津编物（无锡）有限公司 纺纱络筒机
DE102016009151A1 (de) * 2016-07-26 2018-02-01 Saurer Germany Gmbh & Co. Kg Erfassungseinrichtung zur Erkennung von Fadenresten auf Spinnkopshülsen
CN107572310A (zh) * 2017-08-30 2018-01-12 广州弘雅服装科技有限公司 一种络纱操作控制方法
CH714412A1 (de) * 2017-12-08 2019-06-14 Rieter Ag Maschf Verfahren zum Betreiben einer Spulmaschine zum Umspulen von Kopsen einer vorangehenden Ringspinnmaschine.
DE102018131264A1 (de) * 2018-12-07 2020-06-10 Saurer Spinning Solutions Gmbh & Co. Kg Spulmaschine sowie Vorrichtung zur Erkennung von Fadenresten
CN111552243B (zh) * 2020-01-20 2022-06-17 武汉裕大华纺织有限公司 一种智能纺纱打包生产线故障检测系统
CN112079186B (zh) * 2020-10-09 2022-03-11 上海邯祥机电成套设备有限公司 一种自动落筒系统及其使用方法
CN115009928A (zh) * 2022-06-27 2022-09-06 张家港扬子纺纱有限公司 一种通过络筒柔性物流减少纱线损伤的纱线生产系统

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CN111910303A (zh) * 2020-08-27 2020-11-10 潘天德 一种基于重力变化实现定量截纱的纺织辊

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IN2014MU03852A (fr) 2015-10-09
CN104709770A (zh) 2015-06-17
JP2015117461A (ja) 2015-06-25
CN104709770B (zh) 2017-05-31
JP6385267B2 (ja) 2018-09-05
DE102013021316A1 (de) 2015-06-18

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