EP0501913A1 - Procédure pour l'opération d'une machine à retordre consistant en station à préparer des cops, tampon de circulation et plusieurs stations à retordre - Google Patents

Procédure pour l'opération d'une machine à retordre consistant en station à préparer des cops, tampon de circulation et plusieurs stations à retordre Download PDF

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Publication number
EP0501913A1
EP0501913A1 EP92810115A EP92810115A EP0501913A1 EP 0501913 A1 EP0501913 A1 EP 0501913A1 EP 92810115 A EP92810115 A EP 92810115A EP 92810115 A EP92810115 A EP 92810115A EP 0501913 A1 EP0501913 A1 EP 0501913A1
Authority
EP
European Patent Office
Prior art keywords
preparation
line
cops
station
cop
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
EP92810115A
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German (de)
English (en)
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EP0501913B1 (fr
Inventor
Urs Andreas Meyer
Manfred Schreiber
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.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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.)
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Publication of EP0501913A1 publication Critical patent/EP0501913A1/fr
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Publication of EP0501913B1 publication Critical patent/EP0501913B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/06—Supplying cores, receptacles, or packages to, or transporting from, winding or depositing stations
    • 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
    • B65H67/086—Preparing supply packages
    • 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 bobbin preparation station consisting of a bobbin preparation station, a circulation buffer and a plurality of bobbin winding stations, in which bobbins newly entering the bobbin preparation station consisting of a plurality of different preparation bays in the sense of finding the respective yarn end and placing it at a predetermined location in relation prepared for the associated spinning tube for rewinding at the spinning stations and, if the preparation is successful, fed into the circulation buffer and from there into the individual winding stations.
  • the invention further relates to a new design of a winding machine consisting of a cop preparation station, a circulation buffer and several winding stations.
  • the newly arriving cops are those that come directly from the ring spinning machine or from a head storage device, and those that are already partially in the winding positions of the Spin machine are unwound, but the yarn end has been lost.
  • the end of the yarn Once the end of the yarn has been found, it is usually inserted into the upper end of the spinning sleeve, since the end of the yarn can then be reliably sucked into and picked up in the winding stations.
  • Other predetermined locations for the placement of the yarn end are also conceivable.
  • the preparation places are usually provided with different search devices in order to find the end of the thread in the different possible positions on the bobbin, sometimes it is not possible to actually find the end of the thread during the first pass.
  • This fact i.e. the fact that the yarn end has not yet been found is used to identify the respective bobbin as a problem case and to feed it to a separate preparation station, which is then put into operation in order to examine the bobbin even more intensively, in an attempt to determine the yarn end.
  • this more intensive examination takes about three times as long as a normal examination in one of the other preparation places.
  • winding units must be empty because they are still on rewindable, i.e. prepared spinning heads wait.
  • a thread break is eliminated with the aid of a predetermined length of an auxiliary thread.
  • the attachment thread is first wound around the spinning head by the attaching robot, without attempting to connect this end of the auxiliary thread to the broken end of the yarn.
  • the other end of the auxiliary thread is brought into the fiber stream emerging from the drafting system and integrated into it. The other end of the auxiliary thread is therefore connected to the actual spun yarn.
  • the piecing device between the actual spinning yarn and the auxiliary thread is recognized as a longer thick spot by the yarn cleaner and is separated from the yarn in the relevant winding location of the winding machine.
  • Various suggestions were then made as to how the auxiliary thread can be removed altogether see for example the German patent application P 39 32 667.5 from Maschinenfabrik Rieter AG, or the German patent application filed on February 15, 1991 by the same company with the designation "Process for Cleaning yarn defects at a winding unit "(attorney's file number R 3101).
  • the result of this rewinding process is that the end of the yarn is, so to speak, lost, because the auxiliary thread is only wound around the spinning cop with its other end, but not connected to the actual spinning yarn.
  • the object of the present invention is therefore to create a method for operating a cop preparation station or a novel cop preparation station which, using the known elements, especially at the cop preparation stations, does the cop preparation work can perform with high economy, so that the economy of the winding machine is increased as a whole, in the sense that the winding units are fully utilized and usually do not have to wait for prepared spinning bobbins.
  • the invention proceeds in a method of the type mentioned at the outset such that the problem cases are prepared in a further preparation line which operates parallel to the first-mentioned preparation line and has the preparation place for problem cases and / or that the problem cases are fed into a memory and Only at times when the winding units have a sufficient work reserve are fed into the preparation place for problem cases in the first-mentioned preparation line, the supply of problem cases to the first-mentioned preparation line being interrupted whenever the work supply of the winding units falls below a predetermined lower limit.
  • the invention is therefore based on the knowledge that one way of coping with the problem cases without reducing the cycle time of the preparation places not concerned with problem cases is to relocate the preparation place for problem cases in a preparation line working in parallel with the first-mentioned preparation line.
  • all spinning bobbins that can be processed at normal speed are processed at this normal speed, and only those spinning bobbins that are considered to be problem cases and that have to be prepared at the reduced speed become at this reduced speed prepared.
  • This separate preparation of the problem cases in a further preparation line means that the previous preparation place for problem cases can be separated from the first preparation line and can continue to be operated in the preparation line working in parallel.
  • the spinning bobbins are then divided between the two streets, depending on whether they are considered normal cases or problem cases.
  • this decision can be made at the end of the first run through the first preparation line. Examples of processes of this type have been given above all in subclaims 2 and 3.
  • the preparation station for problem cases By removing the preparation station for problem cases from the first preparation line, it will usually have the form of an incomplete unit in the sense that the end of the thread may be found, but the facilities are then missing to place the end of the thread in the spinning tube. In this case, it makes sense if the exit of the further preparation line is connected to the entrance of the first preparation line, so that the spinning heads with the yarn ends found pass through this line again.
  • the preparation place for problem cases in the further preparation line as a complete preparation place, in the sense that the yarn end found can also be brought into the desired position in relation to the spinning tube. In the latter case, the spinning bobbins can then be fed from the further preparation line to the exit of the first-mentioned preparation line or the input of the circulation buffer.
  • Another possibility to solve the problem according to the invention is to close the problem cases save and only at times when the winding units have a sufficient work supply to the preparation place for problem cases, which preparation place can then be arranged as before in the first-mentioned preparation line.
  • the workload of the winding units falls below a predetermined or predeterminable lower limit, the supply of the problem cases must be switched off, since otherwise there would be a great risk that the winding units would have to wait again for new prepared spinning bobbins.
  • a method of this type requires that the worklist in the circulation buffer is determined, which can be determined, inter alia, by counting the prepared bobbins entering the circulation buffer and the bobbins leaving the winding units.
  • this procedure means that problem cases first have to go through the preparation line for normal cases, so that they reduce the work output of this preparation line.
  • the invention provides that one should try to make the decision whether a normal case or a problem case is at an earlier stage.
  • malformed spinning bobbins are usually more problematic than spinning bobbins that have no malformation.
  • This malformation can be found in the geometric shape or size of the spinning cop, but can also be noticeable in that, for example a planned upper turn or lower turn is missing. Such malformations can be recognized automatically.
  • those spinning bobbins which have malformations are therefore automatically considered to be problem cases and are either fed to the further preparation line or a buffer section, ie a buffer for problem cases, depending on the specific design of the bobbin preparation station.
  • the variants according to the invention, which work with this pre-detection of problem cases, are specified, for example, in method claims 5 to 7. In these cases, too, cops that have proven to be problem cases at the end of the normal preparation line are fed to the buffer or the further preparation line for problem cases.
  • German patent application P 40 24 307.9 describes a material flow tracking system that can also be used with spinning cops and does not require any specific numbering of the spinning cops. By means of this system, it is easily possible to identify spinning bobbins which have passed through the bobbin preparation station several times, i.e. Problems that cannot be processed automatically. Using this system, such spinning bobbins can be sorted out and fed to a manual preparation station, as stated in claim 8. After manually searching for the yarn end, such spinning bobbins can then be fed back to the normal bobbin preparation station, as stated in claim 9.
  • the invention is also concerned with designs of winding machines which make it possible to carry out the method according to the invention. Examples of such winding machines can be found in the further claims 10 to 18.
  • FIG. 1 shows a schematic illustration of a known winding machine 10, which consists of a cop preparation station 12, a circulation buffer 14 and a plurality of winding stations 16. From the ring spinning machine or from a head storage spinning cops such as 18, ie newly arriving cops L are prepared in the cop preparation station 12, in the sense that the yarn end 20 is found and inserted into the upper end of the spinning tube 22, as in the spinning cop 18.1 Output of the cop preparation station 12 is shown. Such successfully prepared spinning bobbins 18.1 are fed into the circulating buffer 14 and from there to the individual winding units 16 as soon as one of these winding units becomes empty. The emptying of individual winding units can take place for various reasons.
  • the tubes leaving the winding positions and partially unwound spinning bobbins are examined in a yarn residue sensing station 24 in order to determine whether they are empty or almost empty spinning tubes, which are excreted according to arrow 26, or whether they are partially unwound spinning bobbins, which then correspond the arrow 28 must be fed to the input 30 of the cop preparation station as return cops K, together with the spinning cops 18 coming from the ring spinning machine.
  • the spinning cops are loaded into a cop revolver 31 or cop carousel, which generally has eight cop pick-up points, and the cops are moved step by step between the input 30 and the output 32 of the cop preparation station.
  • the cop revolver has eight stations at which the spinning cops are transported past. These eight stations are marked with the letters A, B, C, D, E, F, G and H.
  • Incoming spinning bobbins 18 are picked up by the cop revolver in place A and leave the cop revolver again at place F, provided the end of the yarn could be found and placed successfully, and shown at the spinning cop 18.1, ie a successfully prepared spinning cop is present.
  • Copes that cannot be successfully processed are transported past the empty stations G and H and brought back to the entrance station A.
  • positions B, C, D and E there are four different preparation places for the Finding the end of the yarn and placing it in the spinning tube 22.
  • the preparation place at point B which is called preparation place B below, is intended for the problem cases and is only used if a spinning cop has been returned via the empty stations G and H, because the yarn end was not found successfully.
  • positions C, D and E there are other preparation places, which are each designed to find the end of the yarn at a certain shape of the spinning head and to insert it into the empty tube.
  • spinning bobbins run around several times with the bobbin turret, they are classified as not automatically preparable and they are fed via the conveyor track 34 to a manual preparation station 36.
  • This manual preparation station is supervised from time to time by the operator and there is a manual search for the end of the thread. If the end of the yarn is found, the spinning bobbins are returned to the entrance 30 of the bobbin preparation station via the conveyor track 38.
  • this path is referred to as a first bobbin preparation line 40 from the entrance of the bobbin preparation station 30 to the exit 32.
  • the invention seeks to remedy this.
  • the first and second ways of achieving this are shown in FIG. 2. Only the cop preparation station is shown here and you can see that the design of the cop revolver has remained the same. However, preparation place B for problem cases has been removed and placed in a further preparation line 42, the entrance of which is arranged at the exit of the cop preparation station, ie the first-mentioned cop preparation line 40, and the output of which leads to the entrance 30 of the cop preparation station, ie the first-mentioned cop preparation line.
  • reference numeral 44 indicates a conveyor track that leads to the actual operating elements of preparation station B
  • reference numeral 46 indicates a conveyor track that returns the spinning heads treated in preparation station B to the head revolver.
  • FIGS. 8 and 9 basically show the same as FIG. 2, but with the exception that the cop revolver has now been replaced by cop preparation positions C, D and E arranged in series .
  • FIG. 9 shows the equivalent form of the first variant according to the invention of FIG. 2 with the preparation places C, D and E arranged in series, while the place B represents an incomplete cop preparation unit, so that the spinning bobbins dealt with here by the preparation places C, D and E formed "expressway" must be fed again.
  • the preparation station B is also arranged in series with the further units C, D and E, so that, in accordance with the second variant of the invention according to FIG. 2, the completely prepared spinning bobbins at the downstream end of the further bobbin preparation line 40 are fed back to the latter can. Since in this variant spinning bobbins can easily occur at the end of the further preparation line 42, which could not be prepared, they are fed back in the loop 50 to the entrance of the further cop preparation line 42.
  • the spinning bobbins If the spinning bobbins cannot be prepared successfully after several attempts, they must be fed to the manual preparation station 36. After successful manual preparation, the spinning bobbins are either fed to the entrance of the further cop preparation line 42 by means of the conveyor track 52 or sent to the entrance of the first-mentioned cop preparation line 40 corresponding to the conveyor track 54.
  • FIG. 3 shows another embodiment variant of the invention, in which it is important to monitor the work stock of the winding units, measured by the number of spinning heads in the circulation buffer, and to process the problem cases in the preparation station B of the preparation line 40 with the reduced cycle time of the Only allow the cop revolver if the workload is sufficiently high.
  • This concept implies that spinning bobbins identified as problem cases at the exit of the revolving turret must be stored in a buffer 56 or a buffer section until the work reserve in the circulation buffer has reached a level at which it is possible to reduce the cycle time of the repeating revolver and the problem cases to edit.
  • the buffer for problem cases is identified here with the reference number 56.
  • a switching element 58 which is opened via a control line 58 when the work reserve has reached the predeterminable level.
  • This status is determined by the computer 62, which can receive signals from the various sensors S1, S2, S3 and S4.
  • the computer 62 can receive signals from the various sensors S1, S2, S3 and S4.
  • FIG. 3 also shows that spinning bobbins which are transported several times through the bobbin turret 31 without finding the end of the yarn are fed to the manual preparation station 36. After manual preparation, these spinning bobbins are returned to the entrance of the bobbin preparation line 40.
  • the specific worklist should be redetermined or executed at certain time intervals and then corrected by new numbers for the incoming and outgoing cops, so that one can avoid storing very large numbers that would otherwise arise would, if you count the signals from the switches S and S4 continuously.
  • This difficulty can also be avoided, for example, by updating the worklist once per circulation of the circulation buffer.
  • FIG. 4 shows a particularly interesting method in which a preliminary decision is made as to whether the individual spinning heads may prove to be problematic cases.
  • All incoming spinning bobbins i.e. whether they come from the ring spinning machine or from a head storage (L), or represent partially unwound, returned bobbins from the winding units (R), a decision station 70 passes, which makes the decision whether the spinning bobbins have a normal shape, so that there is a greater likelihood that the end of the yarn can be found reliably, or whether it has a malformation, in the sense that it will be rather difficult to find the end of the yarn, so that the spinning heads will be more of a problem.
  • Malformed spinning cops are fed to a further cop preparation line 42, which has a row arrangement of cop preparation positions B, C, D and E.
  • Spinning cops which are not successfully prepared at the end of the first cop preparation line 40, are fed to the further cop preparation line 42 in accordance with arrow 72.
  • Spinning bobbins which have run through the further bobbin preparation line 42 several times without successfully finding the end of the yarn are removed and, as usual, fed to the manual preparation station 36.
  • Spinning bobbins that are successfully prepared at the exit of the further cop preparation line 42 are brought together with the spinning bobbins successfully prepared in the first preparation line 40 and fed to the circulation buffer.
  • Copes that have been successfully prepared in the manual preparation station 36 in the sense that the end of the yarn is found, are fed to either the further preparation line 42 or the normal preparation line 40, the decision depending on how the respective workload of the two preparation lines currently looks.
  • FIG. 5 shows a modification of the arrangement of FIG. 4, in which only the cop preparation area B is provided in the further cop preparation line 42, and all spinning cops leaving this cop preparation space B are fed to the entrance of the first cop preparation station 40, so that they are arranged in rows Go through cop preparation places C, D and E.
  • cops which are not successfully prepared are recognized and are conveyed to the entrance of the further cop preparation line 42 via the conveyor track 74.
  • Spinning cops which have proven to be unpreparable several times, are fed to the manual preparation station 36 via the conveyor track 76. Cops where the end of the yarn has been found in the manual preparation station 36 are then either the entrance to the first cop preparation line 40 (arrow 78 or the entrance to the further cop preparation line 42 arrow 80) fed.
  • FIG. 6 Another possibility of working with this preliminary decision is shown in FIG. 6.
  • the spinning bobbins which are considered normal, are fed to the first cop preparation line 40, which here contains a row arrangement of the cop preparation stations B, C and D.
  • Malformed cops are, however, fed to a buffer section 46 and stored there until the work reserve in the circulation buffer is so large that it can be fed to the normal first preparation line. This is done, for example, by closing the switching element 58 via the control line 60 from the microcomputer 62, which, as previously described, determines the work reserve from the signals S1, S2, S3, S4 (or only some of them).
  • Spinning bobbins in which the end of the yarn was not found on the first pass or (x-1) times are fed back to the buffer section 46, specifically here via the conveyor track 82.
  • Corresponding switching devices for switching between the individual conveyor tracks must be provided. Such switching devices are well known from conveyor technology and are therefore not described separately here or in connection with the other figures.
  • 6 shows another special feature, namely an emptying option 84 in the event that the buffer zone should become too full. The spinning bobbins emptied in this way could, for example, either be fed back to the manual preparation station 36 or stored in some other way until better working conditions arise for the processing of these bobbins.
  • FIG. 7 shows an embodiment similar to the embodiment of FIG. 3, but in which the cop preparation places B, C, D and E are arranged in a row.
  • a row arrangement of the cop preparation places can be used instead of the cop revolver, and vice versa.
  • the decision as to whether a certain cop has run through the preparation line several times without being successfully prepared implicitly involves determining the cop flow through the cop preparation station or winding machine.
  • Various proposals have been made on how to do this cop flow tracking. Some proposals belonging to the prior art include the numbering of the individual cops, so that these can be followed on the basis of the numbering.
  • Another system which has the particular advantage that a specific numbering of the spinning heads is not necessary, is in the not yet published German Patent application P 40 24 307.9 of Maschinenfabrik Rieter AG described, the content of which is made the content of this application.

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  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP92810115A 1991-02-20 1992-02-19 Procédure pour l'opération d'une machine à retordre consistant en station à préparer des cops, tampon de circulation et plusieurs stations à retordre Expired - Lifetime EP0501913B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4105281 1991-02-20
DE4105281A DE4105281A1 (de) 1991-02-20 1991-02-20 Verfahren zum betrieb einer aus einer kopsvorbereitungsstation, einem umlaufpuffer und mehreren spulstellen bestehenden spulmaschinen

Publications (2)

Publication Number Publication Date
EP0501913A1 true EP0501913A1 (fr) 1992-09-02
EP0501913B1 EP0501913B1 (fr) 1995-06-21

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EP92810115A Expired - Lifetime EP0501913B1 (fr) 1991-02-20 1992-02-19 Procédure pour l'opération d'une machine à retordre consistant en station à préparer des cops, tampon de circulation et plusieurs stations à retordre

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EP (1) EP0501913B1 (fr)
DE (2) DE4105281A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111039075A (zh) * 2018-10-11 2020-04-21 村田机械株式会社 纱线卷绕设备
CN111217092A (zh) * 2020-01-10 2020-06-02 北自所（北京）科技发展有限公司 玻纤生产系统的缓存分配装置及丝车缓存分配方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111115372A (zh) * 2020-01-10 2020-05-08 北自所（北京）科技发展有限公司 拉丝区运输装置及转运方法
DE102021113506A1 (de) 2021-05-26 2022-12-01 Rieter Automatic Winder GmbH Verfahren zum Betreiben eines Kreuzspulautomaten

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402630A2 (fr) * 1989-06-15 1990-12-19 W. SCHLAFHORST AG & CO. Bobinoir automatique avec un système de transport de canettes et de tubes avec plusieurs boucles de transport
EP0406541A2 (fr) * 1989-06-15 1991-01-09 W. SCHLAFHORST AG & CO. Machine de bobinage automatique à système de transport dans lequel des canettes et tubes sont posés en position verticale sur des palettes
EP0427990A2 (fr) * 1989-11-14 1991-05-22 W. SCHLAFHORST AG & CO. Dispositif pour exécuter automatiquement le raccordement de fil ainsi que le changement de cannettes, constitués par une suite fixe d'opérations à un poste de bobinage d'une machine de bobinage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859167A (ja) * 1981-09-25 1983-04-08 Murata Mach Ltd 管糸搬送システム
US4605177A (en) * 1983-09-20 1986-08-12 Murata Kikai Kabushiki Kaisha Bobbin transporting and treating system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402630A2 (fr) * 1989-06-15 1990-12-19 W. SCHLAFHORST AG & CO. Bobinoir automatique avec un système de transport de canettes et de tubes avec plusieurs boucles de transport
EP0406541A2 (fr) * 1989-06-15 1991-01-09 W. SCHLAFHORST AG & CO. Machine de bobinage automatique à système de transport dans lequel des canettes et tubes sont posés en position verticale sur des palettes
EP0427990A2 (fr) * 1989-11-14 1991-05-22 W. SCHLAFHORST AG & CO. Dispositif pour exécuter automatiquement le raccordement de fil ainsi que le changement de cannettes, constitués par une suite fixe d'opérations à un poste de bobinage d'une machine de bobinage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111039075A (zh) * 2018-10-11 2020-04-21 村田机械株式会社 纱线卷绕设备
CN111039075B (zh) * 2018-10-11 2022-09-02 村田机械株式会社 筒管处理装置、纱线卷绕设备及筒管处理方法
CN111217092A (zh) * 2020-01-10 2020-06-02 北自所（北京）科技发展有限公司 玻纤生产系统的缓存分配装置及丝车缓存分配方法
CN111217092B (zh) * 2020-01-10 2021-07-30 北自所（北京）科技发展有限公司 玻纤生产系统的缓存分配装置及丝车缓存分配方法

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DE59202576D1 (de) 1995-07-27
DE4105281A1 (de) 1992-08-27
EP0501913B1 (fr) 1995-06-21

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