EP0016871B1 - Verfahren und Vorrichtung zur Erzielung vorbestimmbarer und genauer Garnlängen auf Kreuzspulen - Google Patents

Verfahren und Vorrichtung zur Erzielung vorbestimmbarer und genauer Garnlängen auf Kreuzspulen Download PDF

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Publication number
EP0016871B1
EP0016871B1 EP79105375A EP79105375A EP0016871B1 EP 0016871 B1 EP0016871 B1 EP 0016871B1 EP 79105375 A EP79105375 A EP 79105375A EP 79105375 A EP79105375 A EP 79105375A EP 0016871 B1 EP0016871 B1 EP 0016871B1
Authority
EP
European Patent Office
Prior art keywords
accordance
winding
cops
length
spinning
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
Application number
EP79105375A
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German (de)
English (en)
French (fr)
Other versions
EP0016871A1 (de
Inventor
Ernst Felix
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.)
Zellweger Uster AG
Original Assignee
Zellweger Uster 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.)
Filing date
Publication date
Application filed by Zellweger Uster AG filed Critical Zellweger Uster AG
Priority to AT79105375T priority Critical patent/ATE1893T1/de
Publication of EP0016871A1 publication Critical patent/EP0016871A1/de
Application granted granted Critical
Publication of EP0016871B1 publication Critical patent/EP0016871B1/de
Expired 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
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • 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 achieving predeterminable and precise yarn lengths on cross-wound bobbins during the winding process, in which full spinning cops and possibly existing partial cops are rewound and the winding process for the cross-wound package in question is terminated when the desired yarn length is reached. Furthermore, the invention is directed to an apparatus for performing this method.
  • Cross-wound bobbins often have to be produced in the textile industry, of which a plurality are then always wound onto a warp beam at the same time. It is essential that when the first package is empty, the warp beam must be stopped and the rest of the package must be removed.
  • New packages can then be wound from these packages of packages. Since the bobbin with the shortest yarn length in each case is decisive for stopping the warp beam, all the bobbins that have not yet been completely unwound and have comparatively large residual quantities must be removed, rewound or processed in some other way. Accordingly, it can be seen that the practically existing considerable inaccuracies in the yarn lengths of cross-wound bobbins cause considerable disruptions in the production process and thus also significant costs.
  • this CH-A-397499 describes the possibility of measuring the wound thread length only by determining the number of revolutions of the spool drum in the cross winding machine itself.
  • this measurement is associated with considerable measurement errors because it is difficult to precisely define the thread path in the grooves of the groove drum and, moreover, an annoying slip always occurs between the thread and the groove drum.
  • this CH-A-397 499 describes a method in which a measuring wheel no longer directly drives a counter, but rather scans the measuring wheel via a light barrier and thus counteracts inertia effects and friction effects.
  • the method should be feasible in such a way that it is possible to work without additional agents which impair the yarn.
  • a reference size is formed from the precisely known yarn length of error-free full spinning cops by division with an auxiliary size which is at least substantially representative of the yarn length wound from the error-free spinning cops onto the package, and the predetermined yarn length the package is determined by summing the yarn length of the copse or partial copse determined by means of an auxiliary size measurement and the reference size.
  • the method according to the invention makes it possible to achieve yarn lengths which can be predetermined almost exactly on packages, since inertia effects, friction problems and slippage inaccuracies play no role in the length determination.
  • the runtime is preferred as the auxiliary variable used for the unwinding of an error-free, full spinning cop, since time measurements can be carried out precisely and without problems.
  • the reference size is adapted to changes during the winding of the cheese. In this way, the demand for the same possible lengths of yarn on the individual packages can be optimally realized if there is a different slip for the various spinning copes when the package is wound.
  • the reference sizes of different winding positions are assessed according to a further embodiment variant of the invention, and depending on this assessment, a characteristic course of the reference sizes during the winding of the packages is made recognizable, a signal being emitted in the event of significant deviations in the characteristic course of the winding of the package. that indicates this deviation and allows the detection of a faulty winding unit.
  • An advantageous device for performing the method according to the invention is characterized by a measuring device for determining an auxiliary variable for game length measurement, an arithmetic unit with at least one input point for the length of an error-free, full spinning cop and the desired length of the cheese and at least one input for the signal the measuring device and an output, which comes into action when the calculated and desired yarn length match.
  • the delivery cylinder On a ring spinning machine, the delivery cylinder generally has a certain diameter at all spinning positions. Therefore, the same amount of Garrt is inevitably produced on all spinning stations. Since all the cops are spun at the same time, they inevitably have the same length on the same ring spinning machine. With a counter, for example, with which the number of revolutions of the front cylinder is counted, the ring spinning machine can be switched off each time a certain yarn length is reached. This means that not only is the length of the yarn copes the same within a so-called decrease, but there are also no differences from one decrease to another. Likewise, there are no differences between different ring spinning machines.
  • this exactly the same length of the yarn copes Lv is now used as the base value for the formation of the length of the cheese package Lks.
  • exactly 20 spinning cops can each be wound onto a cheese. These packages would then be very precise with regard to the length of the yarns wound on them.
  • the auxiliary sizes mentioned and the length Lv of the full spinning cops can be used to obtain a precisely defined relationship to the length of the yarns wound on the package via the reference size , even if partial cops with a yarn length Lt have been rewound or the winding process is still in progress (remaining length Lr).
  • the length of the spinning cops without thread breaks, for example, would be 2000 m. All ring spinning machines that produce yarns for the winding process in question are to be set so that the spinning copes have an exact length of 2000 m.
  • the runtime is selected as an auxiliary variable. It is assumed that the circumferential speed of the grooved drum is 1000 m / min. This results in a winding speed of approximately 1000 m / min. With a yarn length Lv of the spinning cop of 2000 m and exactly 1000 m / min winding speed, this would be exactly 2 minutes. However, because the winding speed does not exactly match the circumferential speed of the slot drum, the running time is not exactly 2 minutes.
  • the thread running time can now be determined in the opposite sense if the end of an expired spinning cop is to be expected. If a thread break has occurred, the end of the spinning cop comes earlier than expected. It is important that the shortening is often not small, but is several percent. From the not very precise reference size, e.g. B. can be determined with sufficient certainty via a transit time measurement, as a rule, whether a spinning cop with thread break has been present or not. It is thus possible to recognize these spinning cops, which have had at least one thread break, and to exclude them as reference values Rv.
  • FIG. 3 shows a graphical representation of the method of winding according to the invention when producing a package with an exact length of yarn.
  • Section A is the rest Lr of the spinning cops still attached. The beginning of the same was still used for the last cheese. The length Lr of the remainder can be determined quite precisely from the reference value Rv.
  • the distances B and C correspond to the target length Lv and can therefore be assumed to be full spinning cops, ie their length is exact.
  • Section D is obviously a partial cop (possibly spinning cops with thread breakage). Its length Lt can be determined from its running time with sufficient accuracy.
  • Sections E, F, G and H are full copse.
  • the length wound up can always be exactly determined.
  • section H z For example, it is known exactly how much yarn is already on the package and what remaining length Lr can still be unwound from the cops I until the desired exact length Lks of the package is reached.
  • the Cops I yarn can now be cut off when the desired length is reached, for example with the help of an electronic yarn cleaner.
  • the winder With the help of a signal, for example, the winder can recognize that this package has reached the desired length and is to be replaced.
  • an automatic system can be initiated using the signal mentioned.
  • the runtime was chosen as the auxiliary variable, the reference value Rv being calibrated from the length of the cops.
  • the dimension of the reference value Rv is "length per unit time " , for example m / min.
  • other auxiliary variables can also be used.
  • the choice of the running time is particularly favorable because many of them are found on automatic winding machines There are already electromechanical or electronic thread monitors that indicate the running time.
  • the values can often differ from each other, e.g. B. by differently set thread brakes, so that there are different thread tensions and thus different slip ratios between the driving grooved drum and the driven package. If the deviations are too large, a signal can also be given, because it is very likely that the conclusion can be drawn that something is wrong with the winding units concerned.
  • the present method therefore also makes it easier to find faulty winding positions.
  • the characteristic course of the reference size can also be a quality feature of the winding process.
  • the thread monitor 27 can be part of a yarn cleaner, for example, which also contains the cutting device 28.
  • the thread monitor 27 emits a signal to the arithmetic logic unit 36 during the duration of the yarn run, which triggers a count in this, for example. If the number of revolutions of the grooved drum 24 or the cross-wound bobbin 23 are used as counting elements, sensors 31 and 32 are used at corresponding points, which emit the required counting values.
  • An input point 37 is assigned to the arithmetic unit 36, through which both the length Lv of a full spinning cop 21 and the desired total length Lks of the cheese are entered. Furthermore, the arithmetic logic unit 36 has a further input 3'5, through which the signals of the thread monitor 27 or the sensors 31 or are applied. The output 39 of the arithmetic unit 36 actuates the cutting device 28 on the one hand, and on the other hand it can emit control signals for influencing the winding process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Winding Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP79105375A 1979-04-10 1979-12-27 Verfahren und Vorrichtung zur Erzielung vorbestimmbarer und genauer Garnlängen auf Kreuzspulen Expired EP0016871B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79105375T ATE1893T1 (de) 1979-04-10 1979-12-27 Verfahren und vorrichtung zur erzielung vorbestimmbarer und genauer garnlaengen auf kreuzspulen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH341379A CH635300A5 (de) 1979-04-10 1979-04-10 Verfahren und vorrichtung zur erzielung vorbestimmbarer und genauer garnlaengen auf kreuzspulen.
CH3413/79 1979-04-10

Publications (2)

Publication Number Publication Date
EP0016871A1 EP0016871A1 (de) 1980-10-15
EP0016871B1 true EP0016871B1 (de) 1982-12-01

Family

ID=4255449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79105375A Expired EP0016871B1 (de) 1979-04-10 1979-12-27 Verfahren und Vorrichtung zur Erzielung vorbestimmbarer und genauer Garnlängen auf Kreuzspulen

Country Status (7)

Country Link
US (1) US4315607A (cs)
EP (1) EP0016871B1 (cs)
JP (2) JPS55140462A (cs)
AT (1) ATE1893T1 (cs)
CH (1) CH635300A5 (cs)
CS (1) CS226715B2 (cs)
DE (1) DE2964184D1 (cs)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH663402A5 (de) * 1981-12-04 1987-12-15 Loepfe Ag Geb Verfahren zum bestimmen der auf eine kreuzspule mit reibantrieb durch eine nutentrommel aufgewickelten garnlaenge.
GB8407465D0 (en) * 1984-03-22 1984-05-02 Rieter Ag Maschf Length control in winding of threads
IT1224211B (it) * 1987-05-06 1990-09-26 Loepfe Ag Geb Sistema di confezione rocche a metratura differenziata
CS269079B1 (en) * 1987-10-05 1990-04-11 Jiri Ing Sloupensky Connection for spinning machine's spinning units running securing espevially with break spinning machine
DE3810365A1 (de) * 1988-03-26 1989-10-05 Schlafhorst & Co W Verfahren und vorrichtung zum ermitteln des spulenumfangs von kreuzspulen und zum verwerten des ergebnisses
IT1231742B (it) * 1988-04-11 1991-12-21 Murata Machinery Ltd Dispositivo per regolare la pressione di contatto in una roccatrice
DE3906474A1 (de) * 1989-03-01 1990-09-06 Rieter Ag Maschf Verfahren und vorrichtung zum aufwickeln von vorbestimmten garnlaengen in lagen auf einer spule
US4984410A (en) * 1989-07-24 1991-01-15 General Shoelace Co. Apparatus of winding and packaging shoelaces into pairs
DE4017303C2 (de) * 1990-05-30 1999-10-21 Schlafhorst & Co W Verfahren zur Herstellung von Kreuzspulen mit unterschiedlicher Garnlänge
ES2126051T3 (es) * 1993-05-28 1999-03-16 Savio Macchine Tessili Spa Procedimiento perfeccionado para el devanado de bobinas, y maquinas devanadoras para su realizacion.
JPH10310972A (ja) * 1997-04-30 1998-11-24 Murata Mach Ltd 染色糸の巻き取り方法
DE10118659A1 (de) * 2001-04-14 2002-10-17 Schlafhorst & Co W Spulstelle einer Textilmaschine
FR2867173B1 (fr) * 2004-03-08 2006-04-21 Rieter Textile Machinery Fr Procede de reinitialisation du comptage de longueur des bobines de fil
US11068840B2 (en) 2017-03-10 2021-07-20 Scott A. Stensland Device to calculate and display remaining length of a coiled product

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH397499A (de) * 1962-11-21 1965-08-15 Schweiter Ag Maschf Vorrichtung zur Fadenlängenmessung an Kreuzspulmaschinen
US3445837A (en) * 1965-04-20 1969-05-20 Du Pont Apparatus for control of package winding
GB1175367A (en) * 1965-12-17 1969-12-23 Murata Machinery Co Ltd An Improved Automatic Yarn Winder.
CH516468A (de) * 1970-05-28 1971-12-15 Loepfe Ag Geb Vorrichtung zum Auswerten der Spulgeschwindigkeit an Kreuzspulmaschinen
US3739996A (en) * 1971-06-29 1973-06-19 Murata Machinery Ltd Measuring apparatus of total yarn length wound in package on a yarn winder
DE2313462A1 (de) * 1973-03-17 1974-10-03 Trakus Gmbh & Co Verfahren und vorrichtung zur abschaltung des wickelvorganges
JPS502661A (cs) * 1973-05-14 1975-01-11
GB1495003A (en) * 1974-08-14 1977-12-14 Kdg Instr Ltd Method and apparatus for measuring length

Also Published As

Publication number Publication date
DE2964184D1 (en) 1983-01-05
JPS55140462A (en) 1980-11-01
CS226715B2 (en) 1984-04-16
JPS62121253U (cs) 1987-08-01
US4315607A (en) 1982-02-16
JPS6338204Y2 (cs) 1988-10-07
EP0016871A1 (de) 1980-10-15
ATE1893T1 (de) 1982-12-15
CH635300A5 (de) 1983-03-31

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