EP0291710A1 - Procédé et dispositif pour surveiller la partie rattachée du fil sur un métier à filer à bout libre - Google Patents

Procédé et dispositif pour surveiller la partie rattachée du fil sur un métier à filer à bout libre Download PDF

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Publication number
EP0291710A1
EP0291710A1 EP88106282A EP88106282A EP0291710A1 EP 0291710 A1 EP0291710 A1 EP 0291710A1 EP 88106282 A EP88106282 A EP 88106282A EP 88106282 A EP88106282 A EP 88106282A EP 0291710 A1 EP0291710 A1 EP 0291710A1
Authority
EP
European Patent Office
Prior art keywords
piecing
fiber
piecer
thread
values
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
EP88106282A
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German (de)
English (en)
Other versions
EP0291710B1 (fr
Inventor
Hans Raasch
Helmut Schlösser
Joachim Dr.-Ing. Rüge
Heinz-Dieter Goebbels
Manfred Lassmann
Norbert Schippers
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.)
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Publication date
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0291710A1 publication Critical patent/EP0291710A1/fr
Application granted granted Critical
Publication of EP0291710B1 publication Critical patent/EP0291710B1/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
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning

Definitions

  • the invention relates to a method and device for monitoring the piecer in a sliver drawing-in device, a disintegration device, a fiber guiding device, a fiber collecting, arranging and imparting a rotational movement to them, then applying them to the open thread end and a pulling device pulling the thread out of the fiber collector having an OE spinning unit, in which the returned thread end for forming the piecer is applied to an amount of piecing fiber fed into the fiber collector, whereupon the thread is continuously withdrawn from the fiber collector and fibers are continuously fed into the fiber collector.
  • the type of fiber collector is of secondary importance for the application of the invention. As is known, there are differently designed fiber collectors and the manner in which a fiber collector gives the fibers a rotational movement is correspondingly different. If the fiber collector is designed, for example, as a rotor and the rotor has a fiber collecting groove, the fibers lie lengthwise in the fiber collecting groove and circle around the axis of rotation of the fiber collector. In other fiber collectors, for example, the fibers are given a rotational movement about their longitudinal axis.
  • the object of the invention is to obtain data by monitoring the piecer and to make this data available for quality assurance of the piecer.
  • this object is achieved in that the diameter values in relation to the longitudinal axis of the thread are automatically measured, electronically stored and compared with comparison values on the piecer and the thread sections located in front of and behind the piecer, each having at least approximately the length of the piecer, and in that From this comparison, targeted intervention options for the improvement of future piecers, in particular for the improvement of the piecer profile, can be derived.
  • length-related diameter values are obtained, from which, for example, the piecing profile, including the yarn path located before and after the piecer, results.
  • the diameter can be recorded, for example, per millimeter of thread length.
  • the length-related diameter values are stored electronically, for example in digital form, and compared with comparison values, so that specific intervention options for improving future piecers can be determined directly from this comparison.
  • the comparison result is used for the electronic control of an automatically operating piecing device.
  • the primary idea here is a mobile or positionable piecing device that operates the individual spinning positions or OE spinning units in succession. This piecing device can work according to a predetermined program, but is adaptable according to the invention.
  • the comparison result is advantageous for the dimensioning of a previously fed into the fiber collector
  • the amount of piecing fibers used is particularly interesting for OE rotor spinning devices. Pre-feeding a certain amount of fiber before the actual threading is of crucial importance for the quality of the piecer.
  • the determination of the pre-feed amount of the fibers is also particularly critical, while the times at which the ongoing fiber feed begins and the thread take-off begins are easier to determine and less critical.
  • mean values are formed from the length-related diameter values obtained on the occasion of the piecing processes carried out continuously, and the comparison values are derived or formed from these mean values. Certain limits can be placed on the averaging. For example, one can limit the number of measurements to be used for averaging. In addition, it can be predetermined whether the mean values should be obtained from continuous measurements or whether only every second, tenth or nth piecing production is to be used for averaging. A more precise approach to the ideal comparison value of the respective spinning section is expected.
  • a piecing device on an OE spinning machine for forming a piecer in a sliver drawing-in device, a disintegration device, a fiber guiding device, a fiber collector that collects, arranges and gives them a rotational movement, then applies them to the open thread end and one fiber collector OE spinning unit having a pulling device pulling the fiber collector, in which the returned end of the thread for forming the piecer is applied to an amount of piecing fiber fed into the thread collector, whereupon the thread is continuously withdrawn from the fiber collector and fibers are continuously fed into the fiber collector.
  • the device for deriving intervention options for improving the piecing profile of future piecers has a controllable piecing fiber quantity dosing device.
  • the dosing of the piecing fiber amounts can be done completely automatically.
  • the dosing of the piecing fiber quantity can also be carried out independently of other intervention options to improve the piecing profile of future piecers.
  • the piecing program can also be changed from time to time, for example, by hand with regard to the time of individual sub-processes of the entire piecing process. An automatic change of this type is also conceivable.
  • the piecing-fiber quantity metering device has a releasable operative connection to the sliver drawing-in device of the OE spinning unit, to the output of which at least one comparator which responds to thread signals that deviate from comparison values is connected.
  • the comparator is set up to take over the mean values of the measured length-related diameter values formed in the mean value images as comparison values.
  • a setpoint generator can be arranged as an intermediate link between the mean value images and the comparator, which can be set to manual or automatic operation, for example, as desired.
  • the piecing fiber quantity dosing device is connected to a correction quantity adjuster.
  • This correction amount adjuster can be set manually or automatically.
  • the size of the allowable amount of correction can, for example, be made automatically dependent on how many piecers were produced in a certain past time period.
  • An OE spinning machine has a plurality of OE spinning units 1, each with a sliver drawing-in device 2, a dissolving device 3, a fiber guiding device 4, a fiber collector 5 and a take-off device 6.
  • the sliver feed device 2 consists of a feed roller driven by an electric motor. A switch 7 is connected upstream of the electric motor. The sliver 8 passes through a feed table 9 under the feed roller to the opening device 3.
  • the opening device 3 consists of a rotating, toothed roller.
  • the fiber guiding device 4 is designed as a fiber channel that extends from the housing 10 of the opening device 3 to the fiber collector 5.
  • the fiber collector 5 is designed as a rotor which sits on a shaft 11. The fibers 12 separated by the dissolving device 3 first reach the conical jacket-shaped sliding surface 13 and from there into the fiber collecting groove 14 of the rotating fiber collector 5.
  • the fiber collector 5 brings the fibers lying in the fiber collecting groove 14 into a rotational movement. They rotate by lying lengthwise in the fiber collecting groove 14 about the common axis of rotation of the shaft 11 and the fiber collector 5.
  • the trigger device 6 consists of a pair of rollers.
  • the thread 17 follows the broken line 17 '. It is continuously wound on a cheese, not shown here.
  • the take-off device 6 can be switched from forward gear to reverse gear for the purpose of piecing and returning the thread into the fiber collector 5.
  • a mobile piecing device 20 is assigned to the OE spinning machine.
  • the piecing device 20 moves from the spinning unit to the spinning unit and is able to automatically carry out the re-piecing after thread break or the first piecing.
  • the piecing device 20 remains in front of the spinning unit in question stand and then carry out the individual tasks required for piecing according to the program, for example controlled by adjustable or controllable time relays.
  • the drawing shows in a schematic representation only the parts of the piecing device 20 which are important for understanding the invention.
  • An amplifier 25 is connected to a device 21 for automatically measuring the diameter values in association with the longitudinal axis of the piecer 22 and the thread sections 23 and 24 located in front of and behind the piecer 22 and each having at least the length of the piecer 22 for electronically storing the measured, length-related diameter values.
  • a line 27 leads from the device 26 to a mean value image 29 and a line 28 to a comparator 30.
  • the comparator 30 compares the measured length-related diameter values with comparison values which are given to it by a setpoint generator 31.
  • the setpoint generator 31 is connected to the mean value image 29 so that it can adopt the mean values formed there as setpoints.
  • the device 21 is a thread signal pickup, which in this case is arranged so that it can observe and measure both the piecer 22 and the thread sections 23 and 24 located in front of and behind the piecer at the same time.
  • the storage device 26 stores those measured values which result at the time when the piecer 22 is in the middle between two thread guides 32 and 33 and thus also in the middle of the Thread signal pickup 21 is located.
  • the storage device 26 transmits its content to the mean value image 29 for the purpose of forming an average value from measurements already carried out and to the comparator 30 for forming a comparison value.
  • the comparative value determined by the comparator 30 is sent via line 34 to a device 35 for deriving intervention options for improving the piecing profile of future piecers.
  • the device 35 contains, as piecing fiber quantity metering device 36, a computer which is preceded by a memory 37 which is connected to the comparator 30 by the line 34.
  • a signal converter 38 connects to the computer 36.
  • the signal converter 38 can optionally output analog or digital control signals as correction signals for the fiber ribbon feed device 2.
  • a line 39 leads from the signal converter 38 to an electromagnetic drive 40, which can establish a releasable operative connection to the switch 7 of the sliver drawing-in device 2.
  • the operative connection comes about in that the electromagnetic drive 40 extends a plunger 41, which acts mechanically on a switching lever 42 of the switch 7 with the aim of turning the switch 7 on or off again after the plunger 41 has been withdrawn.
  • the switch 7 can also be switched on and off electromagnetically from the OE spinning unit 1 in a manner not shown here.
  • the piecing device 20 is active in front of the OE spinning unit 1, it takes over the switching of the switch 7.
  • the thread guides 32 and 33 of the piecing device 20 bring the thread 17 out of its normal running position 17 'to the device 21, with its Measurements begin so early that when the thread is running, it can also detect the piecer 22 and the thread sections 23 and 24 located in front of and behind the piecer at the right time.
  • the amplified thread signals stored in the device 26 are compared in the comparator 30 with comparison values, and the comparison result passes via the line 34 to the device 35, where it is stored in the memory 37 for producing a future piecer.
  • the previous comparison result is also stored in the memory 37, so that the computer 36 can compare the two comparison results with one another in order to determine whether the piecer 22 currently present corresponds to the quality standard or not.
  • the computer 36 causes the signal converter 38 and the electromagnetic drive 40 to open the switch 7 and thereby prevent further feeding of the fiber sliver 8, causing a thread breakage, with the result that the piecing process is still must be repeated once.
  • the drawing shows that the piecer 22 has not met the quality standard and that the switch 7 is already switched off.
  • the sliver feed device 2 also runs when the piecer is of good quality Operating speed.
  • the two thread guides 32 and 33 then move to the left to bring the thread 17 into its normal running position 17 '. Then they release the thread 17.
  • the piecing device 20 can continue to a new work location. At the new place of work, the piecing device 20 then takes over the switching of the switch 7 located there in accordance with the comparison result of the previous piecer measurement on the OE spinning unit 1, which is stored in the memory 37 -Dosing device 36 determined duty cycle for entering a certain amount of piecing fibers in the fiber collector 5 temporarily switched on.
  • the maximum possible duty cycle has been set on a correction quantity adjuster 44.
  • the take-off device 6 is then started and the thread 17 continuously drawn in the direction of the arrow 19.
  • the switch 7 is also switched on again. If the piecer 22 does not meet the quality requirements, the switch 7 is switched off again, otherwise it remains switched on.
  • the computer 36 also has a few outputs 43, to which, for example, display devices, registration devices, notification devices or, quite generally, further devices for deriving intervention options for improving the piecing profile of future piecers can be connected.
  • the piecing profile can also be controlled by Pulling device 6, the sliver feed device 2 and / or the opening device 3 and / or the speed of the shaft 11 are influenced.
  • the device 21 can be designed differently. For example, it can be set up in such a way that it detects the diameter or profile of the thread or piecer optoelectrically over a certain short thread path and processes this thread signal, for example, into a curve.
  • the thread signal can also be detected capacitively or in any other known manner. Regardless of the type of detection of the thread signals, there is finally a more or less accurate electronic image of the piecing device and its adjacent thread sections in the device 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP88106282A 1987-05-19 1988-04-20 Procédé et dispositif pour surveiller la partie rattachée du fil sur un métier à filer à bout libre Expired - Lifetime EP0291710B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873716728 DE3716728A1 (de) 1987-05-19 1987-05-19 Verfahren und vorrichtung zum ueberwachen der anspinner in einem oe-spinnaggregat
DE3716728 1987-05-19

Publications (2)

Publication Number Publication Date
EP0291710A1 true EP0291710A1 (fr) 1988-11-23
EP0291710B1 EP0291710B1 (fr) 1992-01-22

Family

ID=6327863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106282A Expired - Lifetime EP0291710B1 (fr) 1987-05-19 1988-04-20 Procédé et dispositif pour surveiller la partie rattachée du fil sur un métier à filer à bout libre

Country Status (4)

Country Link
US (1) US4825632A (fr)
EP (1) EP0291710B1 (fr)
JP (1) JP2716455B2 (fr)
DE (2) DE3716728A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030100C2 (de) * 1990-09-22 2000-03-23 Schlafhorst & Co W Verfahren und Einrichtung zum Bestimmen der Änderungen von Kriterien eines automatischen Anspinnvorgangs
DE4404538C1 (de) * 1994-02-12 1995-04-27 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnvorrichtung
CH691687A5 (de) * 1995-12-20 2001-09-14 Schlafhorst & Co W Verfahren zum Ueberprüfen des Fadenprofils beim Anspinnen in einer Offenend-Spinnmaschine.
DE19649329B4 (de) * 1995-12-20 2007-12-13 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Überprüfen des Fadenprofils an einem laufenden Faden beim Anspinnen in einer Offenend-Spinnmaschine
DE19955674A1 (de) * 1999-11-19 2001-05-23 Schlafhorst & Co W Anspinnvorrichtung mit einer Auswerteeinrichtung zur Ermittlung von Parametern eines automatischen Anspinnvorgangs
DE10354608A1 (de) * 2003-11-21 2005-06-16 Saurer Gmbh & Co. Kg Verfahren zur Herstellung eines Effektgarnes auf einer Offenend-Rotorspinnmaschine und Effektgarn
DE102005033562A1 (de) * 2005-07-19 2007-01-25 Saurer Gmbh & Co. Kg Verfahren zum Betreiben einer Offenend-Spinnvorrichtung
DE102016109682A1 (de) 2016-05-25 2017-11-30 Rieter Ingolstadt Gmbh Verfahren zum Anspinnen eines Fadens in einer Offenend-Spinnvorrichtung
CN113279096B (zh) * 2021-06-11 2022-03-29 日照品特裕华纺织科技有限公司 一种环锭纺细纱机纱线断头智能搭接系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725105A1 (de) * 1977-06-03 1978-12-14 Fritz Stahlecker Verfahren zum durchfuehren eines anspinnvorganges und vorrichtung zum durchfuehren des verfahrens
EP0101067A1 (fr) * 1982-08-12 1984-02-22 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Procédé pour rattacher un fil dans une machine à bout libre
DE3440009A1 (de) * 1984-11-02 1986-05-07 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum bilden eines anspinners

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
CS167566B1 (fr) * 1972-09-26 1976-04-29
CH568405A5 (fr) * 1974-02-08 1975-10-31 Zellweger Uster Ag
DE2437485A1 (de) * 1974-08-03 1976-02-12 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zum ueberwachen der arbeitsweise von faeden liefernden textilmaschinen
DE2507199C2 (de) * 1975-02-20 1986-01-30 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum Steuern des Anspinnvorgangs bei Rotor-Spinnmaschinen
DE2605737B2 (de) * 1976-02-13 1979-08-30 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Arbeitsverfahren zum Erkennen des fehlerhaften Arbeitens von Spinnaggregaten von Offen-End-Spinnmaschinen
DE2605978C2 (de) * 1976-02-14 1986-06-05 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum Steuern des Anspinnvorgangs bei Rotor-Spinnmaschinen
DE2714353A1 (de) * 1977-03-31 1978-10-12 Fritz Stahlecker Textilmaschine mit vorrichtungen zum erfassen der querdimension des laufenden garns
DE3402367A1 (de) * 1984-01-25 1985-08-01 Fritz 7347 Bad Überkingen Stahlecker Oe-friktionsspinnmaschine mit einer vielzahl von spinnaggregaten
SE442915B (sv) * 1984-07-25 1986-02-03 Barnaulskij Ok B Avtomatiki Forfarande for metning av diametern hos en trad
CS251339B1 (en) * 1984-09-26 1987-06-11 Frantisek Burysek Spinning-in process control device in spinning units
DE3606466A1 (de) * 1985-03-22 1986-09-25 Fritz 7347 Bad Überkingen Stahlecker Verfahren zum betreiben einer oe-friktionsspinnmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725105A1 (de) * 1977-06-03 1978-12-14 Fritz Stahlecker Verfahren zum durchfuehren eines anspinnvorganges und vorrichtung zum durchfuehren des verfahrens
EP0101067A1 (fr) * 1982-08-12 1984-02-22 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Procédé pour rattacher un fil dans une machine à bout libre
DE3440009A1 (de) * 1984-11-02 1986-05-07 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum bilden eines anspinners

Also Published As

Publication number Publication date
EP0291710B1 (fr) 1992-01-22
US4825632A (en) 1989-05-02
DE3716728A1 (de) 1988-12-01
DE3867901D1 (de) 1992-03-05
JP2716455B2 (ja) 1998-02-18
JPH01156520A (ja) 1989-06-20

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