EP0639524A1 - Verfahren zur Ermittlung der Produktionsleistung einer Kreuzspulen herstellenden Textilmaschine - Google Patents

Verfahren zur Ermittlung der Produktionsleistung einer Kreuzspulen herstellenden Textilmaschine Download PDF

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Publication number
EP0639524A1
EP0639524A1 EP94107741A EP94107741A EP0639524A1 EP 0639524 A1 EP0639524 A1 EP 0639524A1 EP 94107741 A EP94107741 A EP 94107741A EP 94107741 A EP94107741 A EP 94107741A EP 0639524 A1 EP0639524 A1 EP 0639524A1
Authority
EP
European Patent Office
Prior art keywords
winding
speed
winding speed
average
thread
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.)
Withdrawn
Application number
EP94107741A
Other languages
German (de)
English (en)
French (fr)
Inventor
Josef Dr.-Ing. Derichs
Joachim Dr.-Ing. Rüge
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 EP0639524A1 publication Critical patent/EP0639524A1/de
Withdrawn legal-status Critical Current

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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
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • 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
    • 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 determining the production output of a textile machine producing cross-wound bobbins with the features of the preamble of claim 1.
  • the procedure so far has been such that the average set winding speed as the target speed in stationary operation of the winding unit in connection with the thread count as the production speed is multiplied by the efficiency taking the downtimes into account.
  • stationary operation of the winding unit is to be understood as the respective operating phase in which an uninterrupted winding process takes place.
  • the useful downtimes are taken into account, so that the actual production output can be determined as a result.
  • the peripheral speed of the thread guide drum is not identical to the actual winding speed. So there remains the slip between the thread guide drum and the bobbin surface, which varies from lot to lot due to the different Surface structure of the threads changes, disregarded.
  • the driven diameter which changes during the bobbin travel in the case of conical cross-wound bobbins, and which has a considerable influence on the average winding speed, is also disregarded. This driven diameter changes during the bobbin trip, in particular due to the change in the taper of the cheese. In addition, the position of the driven diameter depends on the friction, the thread tension, the contact pressure and other parameters.
  • the direct determination of the winding speed on the running thread essentially eliminates all disturbing factors which have previously impaired the accuracy of the determination of the production output.
  • the slip dependent on the yarn quality of the respective lot is taken into account as well as the driven diameter that changes during the bobbin travel.
  • the mean value formed is representative of the other winding units of the textile machine.
  • the measured values from one or a few winding units are taken as a basis for the entire textile machine. If several batches are processed, the directly determined values should only be transferred to the other winding units of the same batch. An exception to this could arise if it is foreseeable that there will be no significant differences in the running properties that affect the winding speed in the case of several processed batches.
  • the bobbin speed would have to be measured directly at least at one winding point for each lot.
  • the provision of a measuring device at only one or at a few winding positions for determining the winding speed on the running thread results in considerable savings compared to the arrangement of such measuring devices at all winding positions.
  • the expected differences in the winding speeds at the winding points of a textile machine or within a batch are significantly smaller than the differences that occur due to slippage or changes in the driven diameter. Rather, they are negligibly small and can easily be tolerated with a view to saving a large number of measuring devices.
  • Another advantage of the invention lies in the possibility now available to also take measures of the control of the drive speed or the contact pressure of a thread tensioner to maintain a largely constant thread tension. Such measures are taken, for example, when unwinding spinning bobbins, in particular when unwinding the last one To compensate for one third of the winding increasing tensile forces. On the other hand, this leads to the fact that when the first two thirds of the winding of cops are unwound, a higher winding speed can be realized due to the lower thread tension without additional thread breaks.
  • the determination of the production output of a textile machine producing cross-wound bobbins serves the operator to determine the production time for a certain batch size as precisely as possible beforehand. If a deviation from the input winding speed can now be determined by using the method according to the invention of determining the average winding speed, the originally specified production time can still be set by correcting the input winding speed. This correction results in a correspondence between the average winding speed and the target speed required for the required production output. With appropriate programming of the machine, the correction of the target speed based on the comparison mentioned can be implemented automatically. In this way, no intervention is required on the part of the operator in order to meet the originally specified production time for the lot.
  • the winding speed has so far only been measured as the basis of a control mechanism for keeping the winding speed constant (for example on precision winding machines in which the winding spindle is driven directly) or for calculating the thread length wound onto a package with the aim of standardizing the thread lengths.
  • a control mechanism for keeping the winding speed constant (for example on precision winding machines in which the winding spindle is driven directly) or for calculating the thread length wound onto a package with the aim of standardizing the thread lengths.
  • a corresponding measuring device is installed at each winding unit. For this reason, such a measuring method has hitherto been practiced essentially only on precision winding machines.
  • the accompanying drawing shows the speed curve of the winding speed at a winding unit between two standstills of the winding unit.
  • a first phase I the run-up of the winding unit can be seen, which is as slip-free as possible to avoid damage to the upper thread layers of the Cross-wound should take place and is essentially adapted to the inertia of the cross-wound bobbin.
  • this run-up phase is already defined as a normal winding process, that is to say the normal winding speed is already taken as a basis.
  • Phase II shows normal winding operation, the slight fluctuations indicating an image disturbance process in which, in order to avoid the formation of winding images, a slight slip is generated between the thread guide drum and the package in the usual way.
  • phase III the reduction in speed can be seen when unwinding the last third of the cop. This change in the winding speed is also readily determined with the aid of the transit time correlator and then included in the averaging.
  • the bobbin has expired, which means that the winding speed measured on the thread instantly becomes zero.
  • a production speed would possibly be displayed here without further winding of the thread.
  • the average winding speed v m on which the calculation of the production output is based takes into account all of the stationary operation of the winding unit, that is to say during the Thread course, occurring different speeds.
  • This mean value approaches a representative mean value in each measuring cycle between two standstills of a winding unit.
  • at least one cross-wound bobbin has to be completed, since during a cross-wound bobbin trip there are a number of changes regarding the slip or the driven diameter, especially in the case of conical bobbins.
  • a comparator circuit in a central control unit of the textile machine carries out a constant comparison of the set winding speed with the average winding speed determined according to the invention. At the output of this comparator circuit, there is then possibly a corresponding difference signal between these two variables. This difference signal is then, as is customary in control circuits, amplified and used to correct the target speed. With this automatic control, the specified production time for the batch size is maintained without operator intervention.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Winding Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP94107741A 1993-08-17 1994-05-19 Verfahren zur Ermittlung der Produktionsleistung einer Kreuzspulen herstellenden Textilmaschine Withdrawn EP0639524A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4327587 1993-08-17
DE19934327587 DE4327587A1 (de) 1993-08-17 1993-08-17 Verfahren zur Ermittlung der Produktionsleistung einer Kreuzspulen herstellenden Textilmaschine

Publications (1)

Publication Number Publication Date
EP0639524A1 true EP0639524A1 (de) 1995-02-22

Family

ID=6495355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107741A Withdrawn EP0639524A1 (de) 1993-08-17 1994-05-19 Verfahren zur Ermittlung der Produktionsleistung einer Kreuzspulen herstellenden Textilmaschine

Country Status (3)

Country Link
EP (1) EP0639524A1 (ja)
JP (1) JPH0776465A (ja)
DE (1) DE4327587A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456670A1 (en) * 2017-09-19 2019-03-20 Murata Machinery, Ltd. Textile machine, management device, yarn winding system, and yarn winding method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118659A1 (de) * 2001-04-14 2002-10-17 Schlafhorst & Co W Spulstelle einer Textilmaschine
DE10310178A1 (de) * 2003-03-08 2004-09-16 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Messen der Garngeschwindigkeit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535086A1 (de) * 1965-03-05 1970-04-09 Alucolor Fmn Schuster & Co Verfahren zur Geschwindigkeits- und Laengenbestimmung von Textilfaeden
DE1932549A1 (de) * 1969-06-27 1971-03-11 Reiners Walter Dr Ing Verfahren und Vorrichtung zur UEberwachung des Fertigungsprozesses automatischer Spulmaschinen
DE2137153A1 (de) * 1971-07-24 1973-02-01 Schlafhorst & Co W Verfahren zur ueberwachung des fertigungsprozesses automatischer spulmaschinen
FR2247560A1 (en) * 1973-10-12 1975-05-09 Krupp Gmbh Yarn winding control - for regulating the length of yarn wound on the bobbins of a spinning machine
DE2460252A1 (de) * 1974-12-19 1976-07-01 Schlafhorst & Co W Verfahren und vorrichtung zur herstellung von textilspulen vorgegebener fadenlaenge
GB2065725A (en) * 1979-12-17 1981-07-01 Zellweger Uster Ag Producing bobbins
EP0157134A1 (en) * 1984-03-22 1985-10-09 Maschinenfabrik Rieter Ag Length control in winding threads
DE4225842A1 (de) * 1992-08-05 1994-02-10 Schlafhorst & Co W Vorrichtung zum Messen der Geschwindigkeit von Textilfäden an einer Wickeleinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602235C3 (de) * 1976-01-22 1978-07-06 Kenk, Erhard, 7143 Vaihingen Meßeinrichtung zum Messen der Länge von laufenden Fäden
DE3438962A1 (de) * 1984-10-24 1986-04-30 A. Ott Gmbh, 8960 Kempten Faden-spulmaschine
CH669777A5 (en) * 1986-02-28 1989-04-14 Richard Allemann Contactless thread length measuring circuit - scans speed proportional signals to derive part length and sums all part lengths to obtain overall length

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535086A1 (de) * 1965-03-05 1970-04-09 Alucolor Fmn Schuster & Co Verfahren zur Geschwindigkeits- und Laengenbestimmung von Textilfaeden
DE1932549A1 (de) * 1969-06-27 1971-03-11 Reiners Walter Dr Ing Verfahren und Vorrichtung zur UEberwachung des Fertigungsprozesses automatischer Spulmaschinen
DE2137153A1 (de) * 1971-07-24 1973-02-01 Schlafhorst & Co W Verfahren zur ueberwachung des fertigungsprozesses automatischer spulmaschinen
FR2247560A1 (en) * 1973-10-12 1975-05-09 Krupp Gmbh Yarn winding control - for regulating the length of yarn wound on the bobbins of a spinning machine
DE2460252A1 (de) * 1974-12-19 1976-07-01 Schlafhorst & Co W Verfahren und vorrichtung zur herstellung von textilspulen vorgegebener fadenlaenge
GB2065725A (en) * 1979-12-17 1981-07-01 Zellweger Uster Ag Producing bobbins
EP0157134A1 (en) * 1984-03-22 1985-10-09 Maschinenfabrik Rieter Ag Length control in winding threads
DE4225842A1 (de) * 1992-08-05 1994-02-10 Schlafhorst & Co W Vorrichtung zum Messen der Geschwindigkeit von Textilfäden an einer Wickeleinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456670A1 (en) * 2017-09-19 2019-03-20 Murata Machinery, Ltd. Textile machine, management device, yarn winding system, and yarn winding method

Also Published As

Publication number Publication date
DE4327587A1 (de) 1995-02-23
JPH0776465A (ja) 1995-03-20

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