EP0657570A1 - Dispositif de tirage d'articles oblongs et flexibles dans une machine de fabrication - Google Patents

Dispositif de tirage d'articles oblongs et flexibles dans une machine de fabrication Download PDF

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Publication number
EP0657570A1
EP0657570A1 EP94116882A EP94116882A EP0657570A1 EP 0657570 A1 EP0657570 A1 EP 0657570A1 EP 94116882 A EP94116882 A EP 94116882A EP 94116882 A EP94116882 A EP 94116882A EP 0657570 A1 EP0657570 A1 EP 0657570A1
Authority
EP
European Patent Office
Prior art keywords
drive
synchronous motor
main drive
synchronous
digital
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
EP94116882A
Other languages
German (de)
English (en)
Other versions
EP0657570B1 (fr
Inventor
Werner Sperling
Jürgen Lührig
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.)
Spirka Maschinenbau GmbH
Original Assignee
Spirka Maschinenbau GmbH and Co KG
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 Spirka Maschinenbau GmbH and Co KG filed Critical Spirka Maschinenbau GmbH and Co KG
Publication of EP0657570A1 publication Critical patent/EP0657570A1/fr
Application granted granted Critical
Publication of EP0657570B1 publication Critical patent/EP0657570B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/48—Auxiliary devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products

Definitions

  • the invention relates to a device for withdrawing flexible long goods from a manufacturing machine, in particular a braiding, circular knitting or the like.
  • Machine which has a trigger drive, the speed of which can be influenced in accordance with a master frequency derived from a main drive of the production machine, with a control device which allows the master frequency or a synchronous variable derived therefrom to be changed.
  • Braiding machines are generally known in which bobbins with threads, yarns or wires are arranged on a rotor around its axis of rotation, around which the rotor is driven by a main drive via a gear.
  • the bobbin is wound around the axis of rotation, for example on a flexible core, if some of the bobbins are moved in the opposite direction and their threads are lifted above or below the threads of the bobbins rotated in the opposite direction by known mechanisms.
  • the threads are pulled off the bobbins or the flexible long goods resulting from the braiding process are pulled off with a pull-off drive which drives a pull-off disk with which the long goods are pulled off and wound up as required.
  • the take-off speed of the long goods must be precisely matched to the number of revolutions of the rotary rotor so that the long goods have the desired structure, in particular the necessary lay length. It is therefore generally known to have a device for withdrawing flexible long goods to train with the features mentioned above.
  • the speed of the trigger drive is influenced as a function of the speed of the main drive.
  • the influencing takes place with a master frequency derived from the main drive, which in turn can be influenced, since the desired ratio between the trigger drive speed and the main drive speed must be able to be influenced accordingly, for example the structure of the flexible long goods.
  • a ratio synchronicity is achieved in which the desired take-off performance with regard to the slope of the braided goods or the flexible long goods remains constant with respect to the main drive.
  • An uncontrolled asynchronous machine can be used for the main drive, since its speed fluctuations are taken into account proportionally by the trigger drive.
  • This is a gearbox-fixed coupling between the main and trigger drive, which replaces the well-known mechanical coupling between the main drive and the trigger drive via a mechanical gear.
  • the invention has for its object to improve a device with the features mentioned so that an adjustable ratio synchronism between the speeds of the main drive and the trigger drive is achieved with simple means.
  • the trigger drive is a synchronous motor, the speed of which is controlled via a digital frequency converter in accordance with the master frequency derived from the main drive.
  • the trigger drive is a controlled synchronous motor.
  • the speed of the trigger drive is always matched to the speed of the main drive, that is, without a regulation having to be carried out.
  • This is achieved in particular by controlling the synchronous motor via a digital frequency converter, which processes the master frequency derived from the main drive or a corresponding synchronous variable.
  • the digital frequency conversion entails that the output variable of the frequency converter always corresponds exactly to its input variable, which is not to be expected in the case of analog conversion, since here temperature or the like. Influences on the characteristic curve of the converter mean that readjustments are necessary due to fluctuating output variables. Such readjustment is e.g. due to the regulatory and cost expenditure a servo axis is not acceptable.
  • a synchronous motor is many times cheaper than a servo axis, so that a trigger device according to the labeling is also recommended for economic reasons.
  • the device works trouble-free, it is designed so that for the intended deduction operation the maximum required output torque of the synchronous motor is less than the nominal power of the synchronous motor at the intended master frequencies. Accordingly, the synchronous motor has to be dimensioned strongly, which is not a disadvantage from an economic point of view, since synchronous motors of the power ranges in question from approx. 0.25 to 0.75 kW have only slight price differences.
  • the device for trouble-free operation must be designed so that the maximum master frequency is matched to the intended maximum speed of the synchronous motor in the sense of a proper synchronous drive. This further dimensioning requirement for the synchronous motor can also be met without significant economic outlay.
  • the device is designed in such a way that an incremental rotary encoder is connected to the main drive for deriving the master frequency, the output of which is connected to the input of an integrator for generating digital angle of rotation values.
  • the electrical variables emitted by the incrementally acting rotary pulse generator cannot be easily processed by the digital frequency converter.
  • the integrator is designed to convert the output variables of the rotary pulse encoder into digital rotation angle values which are the basis of the digital frequency conversion.
  • the device is designed such that the output of the digital integrator is connected to the input of a multiplier of the control device which allows the digital synchronous variable to be changed.
  • the multiplier is acted upon by the control device with a ratio multiplier, which influences the digital synchronous variable as desired.
  • the device is designed such that the output of the multiplier is connected to an input of the digital frequency converter, the outputs of which go out of a control rotating field are connected to the synchronous motor.
  • the synchronous motor can be controlled proportionally.
  • the production machine 11 has a rotor braiding machine and a machine frame 28 on which a rotor 29 with, for example, 16 coils is rotatably mounted in a manner not shown.
  • a transmission ratio of, for example, 1: 8 to 1:10 is present between the main drive 13 and the rotor 29 of the braiding machine.
  • the main drive has an output of e.g. 2.2 to 3 kW.
  • the trigger drive 12 is used to drive the trigger disk 31, that is to say a motor, the output of which is, for example, 0.37 kW and drives the trigger disk, for example, with a transmission ratio of 1: 150 to 1: 100.
  • the main drive 13 is connected with the aid of a frequency converter 31, which is connected to a voltage source 32.
  • a machine control 33 which acts on the main drive 13 via a frequency converter 31, e.g. via the schematically represented operative connection 34 for switching on or for switching off the main drive.
  • a rotary pulse generator 17 is connected to the main drive 13, which acts incrementally and emits pulses corresponding to the speed of the main drive motor 13, which form a master frequency f.
  • This master frequency is in the 400 kHz range when the rotary pulse generator emits approx. 4000 pulses per revolution and is driven at around 100 revolutions / min.
  • the output 18 of the rotary pulse generator 17 is connected to the input 19 of an integrator 20, which outputs digital rotation angle values at its output 21 according to its characteristic.
  • This derived synchronous quantity must be influenced, since the motor of the trigger drive 12 should not run at the same number of revolutions as the motor of the main drive 13, but according to the construction of the manufacturing machine and the withdrawal speed of the long goods 10 in a certain ratio to this, which is determined by * K1 / K2 is determined.
  • K2 is a constant factor, which is determined by the construction of the manufacturing machine 11 or the trigger drive 12, while K1 is a differently shaped factor according to the construction of the long goods 10. Influencing the digital angle of rotation of the integrator 20 according to the above-described ratio * K1 / K2 is carried out with a multiplier, which is effectively part of a control device 14, which was shown in Fig.2 as integrated in the machine control 33.
  • the output 24 of the multiplier 23 is connected to an input 25 of a digital frequency converter 16.
  • This converter 16 has outputs 26 which output a control rotating field and are connected to the synchronous motor 15.
  • the digital frequency converter 16 thus digitally converts the digital angle of rotation variable into a control variable for the synchronous motor 15.
  • the frequency converter 16 is a three-phase, completely digitally designed pulse frequency converter, which digitally converts the digital synchronous variable, which is converted according to the desired ratio, and thus without influencing e.g. Temperature and voltage fluctuations, so that 15 rotating fields are supplied to the synchronous motor, which allow precise control of the synchronous motor 15 in proportion to the guide frequency f, that is, without the synchronous motor 15 having to be regulated. So this engine works controlled.
  • the synchronous motor In order to ensure control of the synchronous motor 15 and thus proper operation of the trigger device in all operating states of the production machine 11, the synchronous motor must be designed accordingly. For example, it must be designed with regard to the torque to be output by it in such a way that this corresponds at most to its nominal power when used as intended or at the maximum possible guide frequencies f. Furthermore, the maximum master frequencies must be matched to the intended maximum speed of the synchronous motor 15 in order to enable proper synchronous operation, in which the maximum speed of the synchronous motor 15 must not be exceeded to avoid coming out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Electric Motors In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP94116882A 1993-12-13 1994-10-26 Dispositif de tirage d'articles oblongs et flexibles dans une machine de fabrication Expired - Lifetime EP0657570B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9319096U DE9319096U1 (de) 1993-12-13 1993-12-13 Vorrichtung zum Abzug flexiblen Langguts aus einer Herstellungsmaschine
DE9319096U 1993-12-13

Publications (2)

Publication Number Publication Date
EP0657570A1 true EP0657570A1 (fr) 1995-06-14
EP0657570B1 EP0657570B1 (fr) 1998-01-28

Family

ID=6901907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116882A Expired - Lifetime EP0657570B1 (fr) 1993-12-13 1994-10-26 Dispositif de tirage d'articles oblongs et flexibles dans une machine de fabrication

Country Status (4)

Country Link
US (1) US5566604A (fr)
EP (1) EP0657570B1 (fr)
DE (2) DE9319096U1 (fr)
ES (1) ES2115132T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922085A (zh) * 2009-06-09 2010-12-22 株式会社福原精机制作所 圆编织机的卷取控制方法和卷取控制装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996042091A1 (fr) * 1993-11-29 1996-12-27 Yves Michnik Dispositif de commande de tressage
US6360644B1 (en) * 2000-03-31 2002-03-26 American Metric Corporation Braiding machine
JP2013019082A (ja) * 2011-07-13 2013-01-31 Precision Fukuhara Works Ltd 電子柄編機の巻取制御方法および装置
JP2014095157A (ja) * 2012-11-07 2014-05-22 Precision Fukuhara Works Ltd 丸編機の巻取制御方法および装置
CN110055677B (zh) * 2019-05-18 2024-01-30 徐州恒辉编织机械有限公司 一种编织机主机和收线同步控制装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535457A1 (de) * 1975-08-08 1977-02-10 Barmag Barmer Maschf Aufspulmaschine
US4371823A (en) * 1978-03-15 1983-02-01 Barmag Barmer Maschinenfabrik Ag Apparatus and method for starting textile winder synchronous motor drives
EP0119391A2 (fr) * 1983-02-10 1984-09-26 H. Stoll GmbH & Co. Dispositif de tirage d'étoffe pour des métiers à tricoter

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
BE789764A (fr) * 1971-10-07 1973-02-01 Hamel Ag Dispositif a filer ou a retordre et son procede d'utilisation
US4266461A (en) * 1979-07-05 1981-05-12 Karg Corporation Tandem braiding system and components thereof
DE3111113C2 (de) * 1981-03-20 1986-01-23 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Regelvorrichtung für den Motor einer das Gewirk beeinflussenden Wickelvorrichtung, wie Teilkettbaum, bei einer Kettenwirkmaschine
DD218783A3 (de) * 1982-07-23 1985-02-13 Strickmaschinenbau Kmst Veb Steuereinrichtung fuer eine warenabzugsvorrichtung an strickmaschinen, insbesondre rundstrickmaschinen
JPS60181349A (ja) * 1984-02-24 1985-09-17 津田駒工業株式会社 織機の巻取り制御装置
US4922798A (en) * 1988-05-09 1990-05-08 Airfoil Textron Inc. Apparatus and method for braiding fiber strands
IL90789A0 (en) * 1988-08-05 1990-01-18 Rieter Ag Maschf Textile machine with drawframes
JPH03227436A (ja) * 1990-02-01 1991-10-08 Fukuhara Seiki Seisakusho:Kk 丸編機の巻取部における駆動装置
IT1243480B (it) * 1990-08-02 1994-06-15 Carlo Menegatto Apparecchiatura di controllo per spiralatrici
US5398586A (en) * 1990-08-25 1995-03-21 Murata Kikai Kabushiki Kaisha Braided structure forming method
US5417138A (en) * 1993-11-10 1995-05-23 The B.F. Goodrich Company Curved braid apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535457A1 (de) * 1975-08-08 1977-02-10 Barmag Barmer Maschf Aufspulmaschine
US4371823A (en) * 1978-03-15 1983-02-01 Barmag Barmer Maschinenfabrik Ag Apparatus and method for starting textile winder synchronous motor drives
EP0119391A2 (fr) * 1983-02-10 1984-09-26 H. Stoll GmbH & Co. Dispositif de tirage d'étoffe pour des métiers à tricoter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922085A (zh) * 2009-06-09 2010-12-22 株式会社福原精机制作所 圆编织机的卷取控制方法和卷取控制装置
CN101922085B (zh) * 2009-06-09 2013-12-11 株式会社福原精机制作所 圆编织机的卷取控制方法和卷取控制装置

Also Published As

Publication number Publication date
DE9319096U1 (de) 1995-04-13
ES2115132T3 (es) 1998-06-16
EP0657570B1 (fr) 1998-01-28
US5566604A (en) 1996-10-22
DE59405174D1 (de) 1998-03-05

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