EP0849205B1 - Procédé pour commander la dépression dans le système d'aspiration d'une machine textile - Google Patents

Procédé pour commander la dépression dans le système d'aspiration d'une machine textile Download PDF

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Publication number
EP0849205B1
EP0849205B1 EP97120240A EP97120240A EP0849205B1 EP 0849205 B1 EP0849205 B1 EP 0849205B1 EP 97120240 A EP97120240 A EP 97120240A EP 97120240 A EP97120240 A EP 97120240A EP 0849205 B1 EP0849205 B1 EP 0849205B1
Authority
EP
European Patent Office
Prior art keywords
vacuum
errors
negative pressure
demand
basic
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.)
Expired - Lifetime
Application number
EP97120240A
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German (de)
English (en)
Other versions
EP0849205A3 (fr
EP0849205A2 (fr
Inventor
Wilhelm Schmitz
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 Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0849205A2 publication Critical patent/EP0849205A2/fr
Publication of EP0849205A3 publication Critical patent/EP0849205A3/fr
Application granted granted Critical
Publication of EP0849205B1 publication Critical patent/EP0849205B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • 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
    • B65H54/70—Other constructional features of yarn-winding machines
    • 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
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/707—Suction generating system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • 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 invention relates to a method for regulating the vacuum in a suction air system with a suction unit on one Textile machine according to the preamble of the first Claim.
  • Textile machines are used for a variety of work processes Suction air needed.
  • a thread break the thread end with suction air from the Vacuum package and pneumatic for piecing prepared.
  • suction air is constantly present in the vicinity of the drain spool the suction of dirt, flue dust and fibers, of the thread from the payout spool is created. Because the suction air for If the purposes are permanently needed, the necessary ones Vacuum as the basic requirement of the vacuum of the winding machine designated. Events when they occur an increased Requires suction air and therefore an increased vacuum is, especially the suction of the thread ends before the Piecing.
  • the object of the present invention is to relate to parts Vacuum supply with regard to energy requirements and success improve.
  • the invention enables automatic optimization of the Suction power of a suction unit of a textile machine, related towards a game, by automatically changing one Partial start of pre-set vacuum, one subsequent evaluation of the impact on the number of each occurring error and one depending on the Confirmation or further change of the result Under pressure.
  • the suction power is reduced in Dependence on the vacuum level and specific conditions of the respective lot so that the number of occurring Error increases.
  • the lowering of the suction power can therefore only go as far as the machine's efficiency doesn't decreases significantly.
  • the number of errors that occur respectively the tendency towards errors is the criterion whether and how far the vacuum can be lowered.
  • the aim is lowest possible negative pressure with a tolerable number of mistakes. Determining the priority of the two characteristics is carried out by the operator of the machine.
  • the suction power of the suction unit is like this set that a predetermined vacuum value is reached.
  • As a mistake will continue to repeat the Air-assisted troubleshooting when viewed at Suction of the thread end from the package and when picking up of the bobbin thread due to insufficient Vacuum of labor needs troubleshooting attempts must be done. Beat these attempts, whose The number of errors that can be specified are the errors that occurred also not automatically fixable, because the corresponding Job is shut down so that the error of an operator can be fixed.
  • the vacuum is changed step by step predetermined amount, for example by 2 mbar.
  • the The vacuum is changed by a corresponding one Setting the suction power of the suction unit, as a rule by a corresponding change in the speed of the Drive motor of the suction unit.
  • a game is started, of which no empirical values the number of errors that occur in a specified period after the start of the game occurs as Comparison value for the number of errors occurring in subsequent periods.
  • the negative pressure will lowered in the subsequent period.
  • the number of then occurring error decides whether the vacuum can be lowered further or whether it is even above the entrance set level must be raised.
  • the lowest determined based on the respective requirement The value of a vacuum of a time period is related to the lot in the control device of the textile machine stored when in the limit for the errors during this period is exceeded. To ensure the result, the determined optimal value of the vacuum in at least one further period of time can be checked. The storage of the optimal value for the negative pressure of a demand automatically and regardless of the observation of a Operator.
  • the stored optimal value related to a lot Vacuum for a specific job can be done by anyone Restart of a comparable game automatically as Default value of the negative pressure can be set. A requirement an operator does not need to do this.
  • a representation not to scale is about the time t the negative pressure p is plotted. It is here around the representation of the pressure-time diagram of a winding machine. There is a constant vacuum G1 on this winding machine the basic needs. It is the vacuum, among other things constantly touches the catch nozzles in the thread path. The Negative pressure for this basic need is said in the present case cannot be changed.
  • Vacuum A1 for work needs. This is the negative pressure which is needed to pull the thread end from the package fetch and suck the bobbin from the bobbin.
  • G1 is 45 mbar, for example Vacuum A1 for the work requirement at 60 mbar.
  • the negative pressure for the Labor requirements are gradually reduced by the same amount.
  • the lowering, exaggerated in the present embodiment shown should be, for example, 2 mbar. registered in the diagram are three stages A11, A12 and A13 of lowering of negative pressure.
  • Periods Z11, Z12, Z13 and Z14 applied are the same Periods in which the number of each occurred Errors are counted.
  • the time period is initially Z11 the vacuum A1, the vacuum not yet reduced for the Work needs, each at a job when a Event is processed.
  • an error fa the negative pressure increases from Basic requirement G1 on the negative pressure A1 as indicated by the Faults symbolizing lines fa are indicated.
  • everyone Dash therefore represents an error that has occurred.
  • the number of errors that occurred in the first period Z11 set level of vacuum A1 for work needs occur is n1.
  • This number n1 of errors is called Guide value set.
  • the Vacuum of the work requirement to the vacuum A11 At the end of the first time period Z11, the Vacuum of the work requirement to the vacuum A11. To At the end of the time period Z12, the number n1 of errors has increased increased compared to the previous period Z11, but still lies within the tolerable number n1 + t1. Because the number of Any errors that occur are within the specification at the end of the time period Z12, a further reduction by the predetermined amount on the vacuum A12.
  • the number of errors is n1, that occurred in the first period Z11 by one tolerable number a has been exceeded. The last one the reduction made did not lead to a favorable one Result and must therefore be undone.
  • the vacuum A2 for the work requirement remains in the present Case constant.
  • the negative pressure of the basic need in equal large steps from G2 via G21 and G22 to G23.
  • the number of occurring Error fg counted is used as a guideline for the Number of errors fixed in the following Time periods, increased by a tolerable number t2, do not may be exceeded.
  • the Period Z22 the negative pressure of the basic requirement of the value G2 lowered to the value G21.
  • the time period Z22 has the number of errors that occurred is a tolerable Number t2 compared to the number of errors n2 in the first Time period Z21 increased. Because the specified limit is not is exceeded, a occurs at the beginning of the time period Z23 Lowering the vacuum for the basic requirement to the value G22.
  • the time period Z23 has elapsed, the number of errors even decreased somewhat compared to the previous period and is around the number n2. Thereupon the negative pressure for the basic requirement to the next lower level G23 lowered.
  • the vacuum is A3 for work requirements and the vacuum G3 for basic requirements set.
  • Z31 determines the number of errors that occurred. Doing so distinguished between fa fa, due to events have occurred in which the vacuum of the Labor needs must be raised.
  • the fg errors are those Errors in the prevailing vacuum G3 for the basic requirement occur, especially drum wraps. The number of occurring errors must be broken down accordingly and is na and related to the vacuum for the work requirements based on the basic requirements.
  • the vacuum now determined for the basic requirement G33 as well the vacuum A32 for the work requirements can each as optimal lot-related negative pressures are classified.
  • the number of errors in the time period Z311 compared to the number of errors in the Period Z31 did not increase, so that in the following Period Z322. both a reduction in the vacuum for the Basic need to the G31 level as well as lowering the Vacuum for the work requirement to level A31.
  • the number of errors remains below the limit so that in the subsequent period Z333 the two negative pressures are reduced again.
  • the Negative pressure for basic needs is reduced to level G32 lowered and the vacuum for the work requirements on the Level A32. Even with this reduction, the number of Error does not exceed the limit, so that at the beginning of the Period Z344 the negative pressure again by one level be reduced, namely the negative pressure for the Basic need at level G33 and the vacuum for the Work requirements to level A33.
  • the negative pressure for work requirements is in the second cycle of the Lowering again to level A32, which was already in first cycle was determined as the optimal negative pressure.
  • Vacuum level G32 which was determined for the basic requirement. Due to the difference to the previous one as optimal determined vacuum value for the basic requirement can Testing, as not shown here, to be continued and the vacuum for the basic requirement again by one step be lowered to the level G33.
  • the negative pressure for the Work requirements remain at the A32 level achieved. Should the number of errors occur due to the Lowering the vacuum for basic needs even during the renewed lowering and not in the subsequent period increase, it can be assumed that the now reached Negative pressure for the basic requirement can be regarded as optimal can.
  • the lowering cycle can be repeated if the corresponding time periods are matched to the duration of the game and the time periods are such that the number of occurring errors provide sufficient information about the Effects of lowering the vacuum can give. By repeating a lowering cycle can be checked whether the optimal value for confirms the negative pressure of a basic need or work requirement becomes.
  • FIG. 4 schematically shows a pressure-time diagram, in which the vacuum for the working area after a predetermined period of time Z41 from level A4 by a predetermined amount to level A41 is lowered.
  • the number n4 + k of the period Z42 errors fa that have occurred are greater than number n4 of errors fa, that occurred in the first period Z41, and over a limit. It can be concluded from this that the Partial vacuum set was not optimal. Out because of this, the negative pressure for labor needs increases Start of the time period Z43 by a predetermined amount on the Level A42 raised that above that at the start of the game set working pressure A4. It is intended to determine this whether the originally set negative pressure at all is optimal.
  • the vacuum for the work needs to the level A42 the number of occurring errors.
  • the subsequent period Z44 in which the vacuum is maintained at level A42, decreases the number of errors below the number of errors in the Period Z41, during the originally set Negative pressure prevailed, so that the negative pressure can be regarded as optimal at level A42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • General Factory Administration (AREA)
  • Manipulator (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Claims (11)

  1. Procédé de régulation de la dépression dans une installation à air aspiré, comprenant une unité d'aspiration, d'une machine textile pourvue d'une pluralité de postes de travail qui présentent un besoin variable en air aspiré, la dépression, afin de couvrir le besoin en air aspiré, ne devant pas tomber en dessous d'un niveau déterminé couvrant un besoin de base, et le réglage de la puissance d'aspiration de l'unité d'aspiration s'effectuant, au moyen d'un dispositif de régulation, de telle sorte qu'en cas de signalisations d'évènements dont le traitement engendre un besoin accru d'air aspiré, une dépression augmentée d'un montant prédéterminable est fournie comme besoin de travail,
    caractérisé en ce que, afin d'optimiser énergétiquement et en termes de résultat la puissance d'aspiration, à la suite du lancement d'un lot de fil avec une dépression préréglée quant au besoin de base et de travail, on compte pendant un intervalle de temps prédéterminable les erreurs non rectifiables dues à une dépression insuffisante et les tentatives de rectification des erreurs,
    en ce qu'on modifie ensuite la puissance d'aspiration de l'unité d'aspiration et donc la dépression,
    en ce que, après un autre intervalle de temps, on compare le nombre d'erreurs apparues du type indiqué au nombre d'erreurs apparues lors de l'intervalle de temps précédent,
    et en ce qu'on augmente la dépression si la différence de nombre d'erreurs dépasse un nombre d'erreurs maximal prédéfini, et on abaisse la dépression si la différence n'atteint pas ce nombre.
  2. Procédé selon la revendication 1, caractérisé en ce qu'on répète la modification de la dépression dans la même direction de sélection.
  3. Procédé selon la revendication 1, caractérisé en ce que, si l'on ne dispose pas encore pour le lot de valeurs expérimentales concernant le nombre d'erreurs attendues, on abaisse la dépression après le premier intervalle de temps,
    en ce que, si la différence maximale d'erreurs n'est pas atteinte, on entreprend lors d'étapes consécutives d'autres abaissements prédéterminables de la dépression,
    et en ce que, si le nombre d'erreurs dépasse une limite tolérable lors de cet abaissement progressif, on relève la dépression à la fin de ce cycle au moins au niveau précédent.
  4. Procédé selon la revendication 1, caractérisé en ce que, si l'on dispose déjà pour le lot de valeurs expérimentales concernant le nombre d'erreurs attendues, on entreprend à la suite du premier intervalle de temps, selon que ce nombre d'erreurs est dépassé ou n'est pas atteint, un abaissement ou un relèvement de la dépression pour l'intervalle de temps suivant.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on mémorise pour chaque lot la valeur de dépression optimisée en fonction du besoin respectif.
  6. Procédé selon la revendication 1, caractérisé en ce que, lors du lancement d'un lot de fil comparable, la valeur de dépression mémorisée comme étant optimale est automatiquement réglée par le dispositif de régulation.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on adapte la longueur des intervalles de temps au temps de parcours du lot et aux paramètres du fil.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que la dépression est adaptée tant au besoin de base qu'au besoin de travail des postes de travail.
  9. Procédé selon la revendication 8, caractérisé en ce que l'abaissement de la dépression du besoin de base et l'abaissement de la dépression du besoin de travail s'effectuent selon une dépendance mutuelle prédéfinie.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un abaissement précédent de la dépression est annulé si le nombre d'erreurs dépasse la valeur limite tolérable dès avant l'expiration de l'intervalle de temps prédéfini.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que, au cours du même lot, on effectue un deuxième cycle de détermination de la dépression optimale afin de confirmer les valeurs déterminées lors du premier cycle.
EP97120240A 1996-12-20 1997-11-19 Procédé pour commander la dépression dans le système d'aspiration d'une machine textile Expired - Lifetime EP0849205B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653617A DE19653617A1 (de) 1996-12-20 1996-12-20 Verfahren zum Regeln des Unterdrucks in einer Saugluftanlage einer Textilmaschine
DE19653617 1996-12-20

Publications (3)

Publication Number Publication Date
EP0849205A2 EP0849205A2 (fr) 1998-06-24
EP0849205A3 EP0849205A3 (fr) 2000-03-15
EP0849205B1 true EP0849205B1 (fr) 2003-05-02

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Application Number Title Priority Date Filing Date
EP97120240A Expired - Lifetime EP0849205B1 (fr) 1996-12-20 1997-11-19 Procédé pour commander la dépression dans le système d'aspiration d'une machine textile

Country Status (6)

Country Link
US (1) US5934060A (fr)
EP (1) EP0849205B1 (fr)
JP (1) JPH10194590A (fr)
DE (2) DE19653617A1 (fr)
ES (1) ES2193314T3 (fr)
TR (1) TR199701595A3 (fr)

Cited By (2)

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CN102060215A (zh) * 2009-11-16 2011-05-18 Savio纺织机械股份有限公司 用于卷绕单元的独立的抽吸系统
CN110093691A (zh) * 2018-01-31 2019-08-06 卓郎纺织解决方案两合股份有限公司 纺织机运行方法和纺织机

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DE102006050220B4 (de) * 2006-10-25 2014-02-27 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Betreiben einer Kreuzspulen herstellenden Textilmaschine
DE102007006679B4 (de) * 2007-02-10 2018-05-30 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Kreuzspulen herstellenden Textilmaschine
JP2009102132A (ja) * 2007-10-24 2009-05-14 Murata Mach Ltd ブロワモータの制御方法とブロワシステム
IT1396437B1 (it) * 2009-11-16 2012-11-23 Savio Macchine Tessili Spa Dispositivo per la captazione del bandolo durante la preparazione delle spole da alimentare alla roccatura automatica.
DE102013003285A1 (de) * 2013-02-26 2014-08-28 Saurer Germany Gmbh & Co. Kg Verfahren zum Optimieren des Unterdrucks in einer Saugluftanlage einer Kreuzspulen herstellenden Textilmaschine
EP2944714A3 (fr) 2013-08-16 2016-01-27 Elecmag Elektromanyetik Selenoid Makina Imalat Sanayi Ve Ticaret Limited Sirketi Dispositif d'aspiration pour métier à filer à anneaux
DE102014119380A1 (de) * 2014-12-22 2016-06-23 Rieter Ingolstadt Gmbh Rotorspinnmaschine mit einer Vielzahl von Arbeitsstellen und einer Absaugeinrichtung
DE102015003552A1 (de) * 2015-03-19 2016-09-22 Saurer Germany Gmbh & Co. Kg Verfahren, Vorrichtung und Computerprogramm zur Zuteilung von Saugluft auf Saugluft anfordernde Arbeitsstellen einer Textilmaschine
DE102015013569A1 (de) 2015-10-20 2017-04-20 Saurer Germany Gmbh & Co. Kg Verfahren zum Kalibrieren eines Oberfadenerfassungsvorganges von Arbeitsstellen einer Kreuzspulen herstellenden Textilmaschine
JP2019123587A (ja) * 2018-01-16 2019-07-25 村田機械株式会社 自動ワインダにおける静圧制御方法及び自動ワインダ
DE102019116224A1 (de) 2019-06-14 2020-12-17 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Absaugvorrichtung einer Textilmaschine, sowie eine Absaugvorrichtung und eine Textilmaschine

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Publication number Priority date Publication date Assignee Title
CN102060215A (zh) * 2009-11-16 2011-05-18 Savio纺织机械股份有限公司 用于卷绕单元的独立的抽吸系统
CN102060215B (zh) * 2009-11-16 2013-12-18 Savio纺织机械股份有限公司 用于卷绕单元的独立的抽吸系统
CN110093691A (zh) * 2018-01-31 2019-08-06 卓郎纺织解决方案两合股份有限公司 纺织机运行方法和纺织机
CN110093691B (zh) * 2018-01-31 2021-06-11 卓郎纺织解决方案两合股份有限公司 纺织机运行方法和纺织机

Also Published As

Publication number Publication date
US5934060A (en) 1999-08-10
TR199701595A2 (xx) 1998-07-21
EP0849205A3 (fr) 2000-03-15
EP0849205A2 (fr) 1998-06-24
ES2193314T3 (es) 2003-11-01
DE59709963D1 (de) 2003-06-05
TR199701595A3 (tr) 1998-07-21
JPH10194590A (ja) 1998-07-28
DE19653617A1 (de) 1998-06-25

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