EP0644282A1 - Procédé de réglage de la qualité pendant la fabrication d'une pluralité de fils - Google Patents

Procédé de réglage de la qualité pendant la fabrication d'une pluralité de fils Download PDF

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Publication number
EP0644282A1
EP0644282A1 EP94114094A EP94114094A EP0644282A1 EP 0644282 A1 EP0644282 A1 EP 0644282A1 EP 94114094 A EP94114094 A EP 94114094A EP 94114094 A EP94114094 A EP 94114094A EP 0644282 A1 EP0644282 A1 EP 0644282A1
Authority
EP
European Patent Office
Prior art keywords
manufacturing
parameters
points
thread
reference point
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
EP94114094A
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German (de)
English (en)
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EP0644282B1 (fr
Inventor
Jörg Spahlinger
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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Application filed by Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0644282A1 publication Critical patent/EP0644282A1/fr
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Publication of EP0644282B1 publication Critical patent/EP0644282B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • the present invention relates to a method for quality control in the production of a large number of threads in a corresponding number of mutually identical production sites.
  • a method for quality monitoring in the production of a large number of threads is known from EP 0 439 106 A1.
  • the individual production site is monitored in that the reference signal is obtained from the measurement of process parameters of a large number of production sites.
  • the simplest form of evaluation consists in forming a cross-section that evaluates all manufacturing sites equally. A statement about the cross section of all manufacturing sites is then made the quality of the overall process or the product. However, this statement is not necessarily correct as an absolute quantity, but depends on the condition of the manufacturing sites. If the course of the process is shifted uniformly in all manufacturing locations relative to the actually intended state, there are no significant deviations between the manufacturing locations in the cross-sectional formation. As a result, the uniformity of the cross section appears as an indication of the presence of the desired process, but the overall process itself runs in an undesired manner.
  • the aim of the present invention is to provide a method in which the production processes can be controlled as uniformly and equally well as possible at all points in a multi-digit textile machine with justifiable measurement and evaluation effort.
  • the further development according to the invention represents the comparison of the process parameters (measured values) in all manufacturing points with a so-called reference point, the process flow of which is assumed to be representative of an optimally set process flow. In doing so, an attempt is made to influence the process parameters at this reference point in a targeted manner in order to approach the intended course of the process. By comparing the common process parameter of each individual point with the reference point, one can then conclude how close the actual process flow comes to the intended process flow and determine a quality signal for evaluating the threads produced. All manufacturing sites are also controlled uniformly with regard to the decisive parameters.
  • the reference value at which an expected deviation in the thread quality is predetermined is obtained from the manufacturing site concerned.
  • the control signal serves as the reference value, by means of which the decisive process parameter of the reference point is regulated. Both alternatives ensure a time-related statement about the process control at the individual manufacturing site.
  • a method for quality control in the production of a large number of threads in a corresponding number of mutually identical production sites is specified, the method being applicable in the textile machine irrespective of the type of production or further processing actually present.
  • All manufacturing points of the system are equipped with measuring devices with which at least one signal can be continuously recorded via measured variables which are particularly meaningful for the process of the respective manufacturing point.
  • At least one additional signal about the state of the process is acquired at one or at a few manufacturing sites of the system in order to obtain more precise information about the actual process course.
  • Process parameters that can be controlled directly as well as parameters that are meaningful for the process can be measured.
  • these correlation results are examined by an evaluation that runs automatically in the higher-level evaluation unit with regard to one or more typical properties of the product (for example dyeability, uniformity of the thread during the winding travel, etc.) and from this specifications for further influencing of the individual or derived from the few reference points.
  • statements about the quality of the product can be made at the manufacturing sites.
  • a statement on the quality of the product at each manufacturing site can be made on the basis of a quality parameter.
  • the quality variable can be determined by comparing the process parameter (s) with predetermined target values or by comparing the process parameters of the reference point (s).
  • the central point in controlling the quality of the threads produced in a multi-digit textile machine is the uniformity of the properties of the threads produced across all manufacturing locations.
  • actuating variables are determined which specify the individual desired process parameters in all manufacturing points of the multi-digit machine in an identical manner.
  • the type of manipulated variable determination depends on the process at hand.
  • the reference points are considered to be representative of the process flow in the entire system and conclusions are drawn for the control of the other manufacturing points.
  • tolerance bands are defined which surround the respective mean values of the measurement parameters and whose width stands for permissible deviations from a target value. This eliminates, in particular, high-frequency components of the measured variable signals, which would otherwise impair the meaningfulness of the measured signals for the evaluation.
  • the central task of the higher-level evaluation unit is to control the process-dependent parameters of the manufacturing sites in such a way that the desired product-specific properties can be achieved in the sum effect.
  • the focus is on the uniformity of the manufacturing result across all manufacturing sites. Due to the typical further processing of a large number of finished bobbins in corresponding finished products, the properties of the individual bobbins may differ only minimally with regard to further processing steps.
  • the quality of each individual thread produced or the quality of the thread is of course also important control and ensure the finished coil for each manufacturing site.
  • conclusions for the quality of the manufactured coils of each individual manufacturing site can also be drawn from the recorded and correlated or evaluated measuring signals.
  • the production qualities of the individual coils are recorded by automatic evaluation and documentation and are automatically assigned to them as a characteristic during or after the end of the production process.
  • Figure 1 shows a possible embodiment for the quality control of a multi-digit textile machine according to the concept of the invention.
  • a sensor 10 or 10 'or 10' ' (often the thread tension measurement) and possibly a few further sensors 11 or 11' or 11 ''.
  • the data of these sensors are e.g. transferred as thread tension signal 15 or signals of further measured variables 16 to a higher-level evaluation unit 1.
  • further measured variables such as the coil contour detection 7, the K value detection 8, the elastic modulus detection 9, and further process sensors 11 (frequency analysis, etc.) can be installed.
  • the signals from these measuring devices also go to the higher-level evaluation unit as different measuring signals 14.
  • the superordinate evaluation unit 1 is now responsible for the determination of values derived from the measured values and for the correlation of all signals from the measured value sensors recorded at the same time.
  • the evaluation unit For the evaluation processes that run automatically in this evaluation unit, the evaluation unit must have specifications about the desired product characteristics 2 and specifications about the process dependencies 3 that actually occur. On the basis of these specifications and a corresponding, automatically running conclusion logic, the superordinate evaluation unit 1 can make statements about the process state in the reference point 4 and in the manufacturing points 5, 5 ',. Based on the known process flows, these statements lead to specifications regarding the process control of both the reference point 4 and the production points 5 and 5 '.
  • This control information is sent to the various manufacturing sites in different ways. All reference points are, because they are to be influenced as much as possible, via subordinate control loops 17 regulated locally.
  • the higher-level evaluation unit therefore provides these local control loops (preferably a separate control loop for each controllable variable) with setpoints for influencing the process.
  • the local control loops ensure corresponding changes in the process control. These are in turn measured by sensors 7 to 11 and reported back to the higher-level evaluation unit 1 as measurement signals. The process is therefore tracked in a quality control loop with regard to the quality of the manufactured product.
  • All other manufacturing points 5, 5 ', ... receive control values for influencing the various process parameters instead of the target values used in the reference points.
  • These are the manipulated variables 12 and 13 in the manufacturing site 5 and 5 '.
  • the process in the manufacturing site is influenced on the basis of the specified manipulated variables; these are detected by sensors 10 'or 10' 'and possibly 11' or 11 '' and are again triggered by signals 15 and possibly 16 the higher-level evaluation unit reported back.
  • quality control which is based on the optimized process management in the reference locations and the quality control implemented there.
  • the quality control is thus set up and kept in operation on the basis of the signal connection 18 for the feedback of the measured variables and the output of manipulated variables or setpoints via the parameter specification 19.
  • the desired product parameters 2 and the process dependencies 3 occurring in a given process are of central importance for a product-related control of quality the present process of the higher-level evaluation unit 1, and ideally contain all the parameters required to achieve an optimal manufacturing result. These specifications can be specified or changed both by the manufacturer of the quality control and by the user of the quality control system. This allows the process control to be largely adapted to changed manufacturing processes.
  • Figure 2 shows the typical structure for producing a coil from a synthetic fiber.
  • the thread 23 is drawn off from an extrusion and spinning unit 20 by means of a godet arrangement 21 and wound up on an empty spool with the aid of a traversing device 27.
  • the thread is given appropriate physical properties such as tensile strength, extensibility, titer and others by appropriate measures.
  • the thread can also be passed through texturing devices, not shown here, in order to achieve desired surface properties.
  • the winding on a spool shown in the lower area of FIG. 1 follows.
  • the continuously drawn thread 23 is guided via a top thread guide 25 to a traversing device 27, which initially moves the thread back and forth on the rotating empty bobbin 28 and then on the rotating bobbin pack 29.
  • the drive motor 30 required to rotate the package is controlled by an actuator 31 so that the peripheral speed on the surface of the package always remains constant.
  • the frequency of the oscillation is specified via a drive motor which is controlled by the actuating device 32.
  • the coordination between the speed of the winding spindle motor 30 and the frequency of the traversing is achieved by synchronization, the traversing control 32 being informed of the speed of the winding spindle by the speed measuring device 44.
  • a thread tension measuring device 24 is connected, which enables a continuous detection of the thread tension.
  • the thread tension signal is freed of disturbing high-frequency vibrations via a filter 33 and passed on to the evaluation device 35 as a record 34 of the tension force.
  • Figure 3 shows schematically three manufacturing locations 4, 5 and 5 '.
  • a thread 23 or 23 'or 23' ' is produced at each of the production points. This is a partial section of the overall process from FIG. 2, the godet arrangement and the thread tension measurement being shown in detail. However, it can also be a manufacturing site in any other machine for manufacturing a chemical thread, for example a false twist crimping machine. Production in the context of this application is understood not only to mean spinning, but also the processing of the thread.
  • each thread is drawn out of the actual production zone by a godet 45 or 45 'and 45' '.
  • a thread tension sensor 24 or 24 'or 24' ' which consists of a deflecting thread guide and the actual sensor.
  • the filament tension which is measured by the respective sensor 24, 24 'and 24' ', is influenced by this heating.
  • the manufacturing site 4 the measured thread tension is regulated at the same time.
  • the manufacturing location 4 therefore serves as a reference location.
  • the measurement parameter namely the thread tension, is specified to a controller 47.
  • the controller 47 generates an actuating signal 39 for the heating control as a function of a setpoint S. This regulation with adjustment of the temperature of the godet 22 keeps the thread tension at the sensor 24 constant.
  • control signal 39 is now given as control signal 39 'or 39''via the line 48 identically to the heating controls of the other manufacturing sites 5 or 5'. Hence the temperatures of the godets 22 'and 22''of these other manufacturing points are set identically to the reference point.
  • the control signal 39 is further passed on to the local evaluation unit 46 and compared there with the target value S. This comparison can also be made against a tolerance band on both sides of the setpoint S. A quality signal Q1 is obtained from this for the quality of the control.
  • the thread tension is also measured by corresponding thread tension sensors 24 'or 24' 'and the measured value is given to a local evaluation unit 46' or 46 '' assigned to the manufacturing point and compared there with the thread tension signal determined in the reference point 4.
  • Quality signals Q2 and Q3 are determined from this.
  • Fig. 4 shows schematically three manufacturing sites 5, 5 'u. 5 ''.
  • This is a chemical thread made of polyester, for example.
  • the lower part of a spinning station is shown as the manufacturing site. It can however, act on a manufacturing site in any other machine for manufacturing a chemical thread, for example a false twist crimping machine.
  • production means not only spinning but also processing of the thread.
  • the thread is drawn out of the actual production zone by a godet 22, 22 ', 22''.
  • Each thread then passes through a thread tension sensor with the deflecting thread guides 49 and the actual sensor 24. Then the thread arrives at a head thread guide 50.
  • the coil 28 is formed on the winding spindle 51.
  • the winding spindle 51 is driven in such a way that the forming coil has a constant peripheral speed.
  • a measuring roller 52 is used, which is in circumferential contact with the coil.
  • a heating device 53.1, 53.2, 53.3 is used for this purpose.
  • the thread tension which is measured by the respective sensor 24, is influenced by this heating.
  • the manufacturing point 5 therefore serves as a reference point.
  • the measurement parameter, namely the thread tension, is specified to a controller 54.
  • the controller 54 generates an actuating signal 55 for the heating control 53.1 as a function of a setpoint S. This regulation with adjustment of the temperature of the godet 22 keeps the thread tension at the sensor 24 constant.
  • the control signal is now also given identically to the heating controls 22 'and 22''of the other manufacturing sites 5 and 5''. Therefore the temperatures of the godets 22 'and 22''of these other manufacturing sites are set identical to the reference site.
  • the control signal 55 is further compared on the computer 56.1 of the manufacturing site 5 with the target value S or a tolerance band on both sides of the target value. A quality signal is obtained from this for the quality of the control.
  • the thread tension is now also measured by corresponding thread tension sensors 24, 24 ′′, and the measured value is given via line 57.2, 57.3 to a computer 56.2, 56.3 assigned to the manufacturing location. It would now be expected that the measured value would also remain constant at these points. However, malfunctions can also occur at the manufacturing sites 5 'or 5'', as is shown for the manufacturing site 5''from the indicated writing of the computer 56.3.
  • the measurement signal of the individual manufacturing points 5 'and 5'' is again compared in the computer with a target value.
  • the mean value can be formed from the measurement signal. It is then monitored whether the measured value leaves a tolerance band applied on both sides of the mean value. But also also whether the mean value leaves a given tolerance band.
  • the control signal 55 can serve as a reference signal or a tolerance band applied around the control signal on both sides. This alternative is shown in the drawing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Looms (AREA)
  • General Factory Administration (AREA)
  • Treatment Of Fiber Materials (AREA)
EP94114094A 1993-09-21 1994-09-08 Procédé de réglage de la qualité pendant la fabrication d'une pluralité de fils Expired - Lifetime EP0644282B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4332002 1993-09-21
DE4332002 1993-09-21
DE4335590 1993-10-19
DE4335590 1993-10-19

Publications (2)

Publication Number Publication Date
EP0644282A1 true EP0644282A1 (fr) 1995-03-22
EP0644282B1 EP0644282B1 (fr) 1997-07-09

Family

ID=25929718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114094A Expired - Lifetime EP0644282B1 (fr) 1993-09-21 1994-09-08 Procédé de réglage de la qualité pendant la fabrication d'une pluralité de fils

Country Status (5)

Country Link
US (1) US5621637A (fr)
EP (1) EP0644282B1 (fr)
CN (1) CN1103444A (fr)
DE (1) DE59403291D1 (fr)
TW (1) TW307738B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5928579A (en) * 1996-12-02 1999-07-27 Barmag Ag Apparatus and method for spinning and winding multifilament yarns
WO2000020317A1 (fr) * 1998-10-07 2000-04-13 Tamfelt Oyj Abp Procede et installation en rapport avec un bobinoir
WO2007020022A1 (fr) * 2005-08-17 2007-02-22 Oerlikon Textile Gmbh & Co. Kg Procede et dispositif servant a enrouler une pluralite de fils synthetiques
CN101010246B (zh) * 2004-07-31 2010-04-07 苏拉有限及两合公司 在制造管线状聚合物产品时用于质量控制的方法和装置

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3722399B2 (ja) * 1997-05-26 2005-11-30 東レエンジニアリング株式会社 糸条製造工程における張力監視方法
GB9910331D0 (en) * 1999-05-06 1999-06-30 Fibrevision Limited Yarn quality monitoring
DE10195670D2 (de) * 2000-12-23 2003-11-20 Barmag Barmer Maschf Galetteneinheit und Vorrichtung zum Verstrecken eines Fadens
DE10116706A1 (de) * 2001-04-04 2002-10-10 Schlafhorst & Co W Verfahren und Vorrichtung zum Betreiben einer Zentrifugenspinn-und-zwirnmaschine
KR100493986B1 (ko) * 2001-09-20 2005-06-27 학교법인 두원학원 방사상태 제어시스템의 제어방법
JP4049107B2 (ja) * 2004-03-01 2008-02-20 株式会社豊田自動織機 紡績機における繊維束の品質管理方法
DE102004042115A1 (de) * 2004-08-30 2006-03-02 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zur Optimierung von Spul- und Spleißparametern auf einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine
US8282384B1 (en) * 2011-04-15 2012-10-09 Thomas Michael R Continuous curing and post curing apparatus
CN103572393B (zh) * 2012-07-24 2018-09-28 欧瑞康纺织技术(北京)有限公司 用于监控纺丝车间的方法和设备
WO2014172796A1 (fr) 2013-04-22 2014-10-30 Uster Technologies Ag Compilation et fourniture d'une référence mondiale de qualité textile
US20170277164A1 (en) * 2014-07-31 2017-09-28 Universitat Politècnica De Catalunya Computer implemented method for dissimilarity computation between two yarns to be used for setting of a textile machine in a textile process, and computer program product
ITUB20154999A1 (it) * 2015-10-30 2017-04-30 Camozzi Digital S R L Metodo di ottimizzazione del processo di lavorazione per una linea di produzione tessile e sistema
DE102016201460A1 (de) * 2016-02-01 2017-08-03 Robert Bosch Gmbh Produktionsanlage mit transparenter Prozessregelung
JP2019533094A (ja) * 2016-09-26 2019-11-14 マシーネンファブリク リーター アクチェンゲゼルシャフトＭａｓｃｈｉｎｅｎｆａｂｒｉｋ Ｒｉｅｔｅｒ ＡＧ 繊維機械の予知保全の方法及びシステム

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0439106A1 (fr) * 1990-01-26 1991-07-31 Barmag Ag Procédé et dispositif pour surveiller la tension d'un fil
EP0453890A1 (fr) * 1990-04-24 1991-10-30 Maschinenfabrik Rieter Ag Procédé pour le réglage de la tension d'une mèche dans un banc à broches
EP0541483A1 (fr) * 1991-11-08 1993-05-12 Maschinenfabrik Rieter Ag Conduite de processus pour l'industrie textile
DE4209203A1 (de) * 1992-03-21 1993-09-23 Schlafhorst & Co W Spinn-/spulmaschinenkombination mit einer vorrichtung zum ueberwachen des ordnungsgemaessen arbeitens der einzelnen spinnstellen

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US3922642A (en) * 1970-05-26 1975-11-25 Toyoda Automatic Loom Works Automatic spinning system
CS201779B1 (en) * 1978-09-06 1980-11-28 Jiri Sloupensky Method of and apparatus for controlling the operation of open-end spinning machines
DE3583057D1 (de) * 1984-03-31 1991-07-11 Barmag Barmer Maschf Verfahren zur zentralen erfassung von messwerten einer vielzahl von messstellen.
CN1027926C (zh) * 1985-07-03 1995-03-15 巴马格巴默机器制造股份公司 运转纱线的连续监控方法
JPH0720800B2 (ja) * 1988-03-01 1995-03-08 村田機械株式会社 紡績工場における品質管理システム
CH681077A5 (fr) * 1988-10-25 1993-01-15 Zellweger Uster Ag
US5018390A (en) * 1989-07-06 1991-05-28 Barmag Ag Method and apparatus for monitoring the tension and quality of an advancing yarn
US5017911A (en) * 1989-07-06 1991-05-21 Barmag Ag Method and apparatus for measuring the tension of an advancing yarn
DE3924779A1 (de) * 1989-07-26 1991-01-31 Rieter Ag Maschf Verfahren und vorrichtung zum betrieb einer spinnereilinie
US5055829A (en) * 1990-01-26 1991-10-08 Barmag Ag Method and apparatus for monitoring yarn tension
JPH047269A (ja) * 1990-04-24 1992-01-10 Murata Mach Ltd 紡績工場における品質管理システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439106A1 (fr) * 1990-01-26 1991-07-31 Barmag Ag Procédé et dispositif pour surveiller la tension d'un fil
EP0453890A1 (fr) * 1990-04-24 1991-10-30 Maschinenfabrik Rieter Ag Procédé pour le réglage de la tension d'une mèche dans un banc à broches
EP0541483A1 (fr) * 1991-11-08 1993-05-12 Maschinenfabrik Rieter Ag Conduite de processus pour l'industrie textile
DE4209203A1 (de) * 1992-03-21 1993-09-23 Schlafhorst & Co W Spinn-/spulmaschinenkombination mit einer vorrichtung zum ueberwachen des ordnungsgemaessen arbeitens der einzelnen spinnstellen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5928579A (en) * 1996-12-02 1999-07-27 Barmag Ag Apparatus and method for spinning and winding multifilament yarns
WO2000020317A1 (fr) * 1998-10-07 2000-04-13 Tamfelt Oyj Abp Procede et installation en rapport avec un bobinoir
CN101010246B (zh) * 2004-07-31 2010-04-07 苏拉有限及两合公司 在制造管线状聚合物产品时用于质量控制的方法和装置
WO2007020022A1 (fr) * 2005-08-17 2007-02-22 Oerlikon Textile Gmbh & Co. Kg Procede et dispositif servant a enrouler une pluralite de fils synthetiques

Also Published As

Publication number Publication date
CN1103444A (zh) 1995-06-07
TW307738B (fr) 1997-06-11
DE59403291D1 (de) 1997-08-14
EP0644282B1 (fr) 1997-07-09
US5621637A (en) 1997-04-15

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