EP0613970A1 - Frein de fil de trame avec freinage réglable - Google Patents

Frein de fil de trame avec freinage réglable Download PDF

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Publication number
EP0613970A1
EP0613970A1 EP93120354A EP93120354A EP0613970A1 EP 0613970 A1 EP0613970 A1 EP 0613970A1 EP 93120354 A EP93120354 A EP 93120354A EP 93120354 A EP93120354 A EP 93120354A EP 0613970 A1 EP0613970 A1 EP 0613970A1
Authority
EP
European Patent Office
Prior art keywords
weft
thread
brake
parts
stepper motor
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Withdrawn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
EP93120354A
Other languages
German (de)
English (en)
Inventor
Rainer Schuster
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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 Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0613970A1 publication Critical patent/EP0613970A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to 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
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B65H2551/21—Monitors; Displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/23—Actuating means angular magnetic, e.g. rotary solenoids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/24—Servomotors
    • 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 an improved weft brake with controllable braking action, in particular for defenseless weaving machines, consisting of two resiliently lying against each other and the weft thread between the receiving lamella-like parts, which act on the controllable means, the position of at least one of the two lamella-like parts relative to the other adjust.
  • Such weft brakes are used in defenseless weaving machines so that the weft insertion member can grip the selected weft in a tensioned or stretched state.
  • the entry elements for example the grippers which are pushed into the shed from both sides and withdrawn again, are subject to considerable accelerations and delays.
  • the thread is quickly brought to the center of the compartment by the grippers and is quickly removed from the spool.
  • the handover takes place to the gripper that is advanced from the opposite side.
  • the rapid thread take-off is interrupted for a short time. The thread is then quickly pulled through the shed by the receiving rapier and released at the end of the entry path, thereby stopping its speed.
  • the thread must remain taut for the entire time the weft is inserted and, for example, may not continue to run if the thread pull is briefly interrupted during thread transfer and, for example, may not form loops.
  • the above-mentioned weft brake is provided and in many cases designed such that it not only exerts a constant, uniform braking action on the thread, but also realizes a different braking action in different phases of the weft insertion.
  • a weft brake with stepwise controllable braking effect for defenseless weaving machines is known.
  • This weft brake consists of two resiliently laying against each other and the weft thread between the receiving plate-like parts, on which additionally individually and arbitrarily controllable means act.
  • the controllable means should be able to adjust at least one of the two lamella-like parts with respect to the other.
  • Electromagnetic means are provided as controllable means, for example, such as an armature piece resting on one lamella-like part and an electromagnet arranged on the other lamella-like part opposite.
  • the control of this thread brake does not allow the braking force acting on the weft thread to be set in a narrow tolerance.
  • this thread brake only allows two control options, namely the brake is electromagnetically loaded or it is not loaded.
  • a thread brake for weaving machines is known from EP 0 475 892 A1, according to which the weft thread is guided between a brake band and a brake body that can be moved in a controlled manner, and the brake body can be actuated by a servomotor connected to a control and logic circuit.
  • the rotary movement of the servomotor shaft is converted into a lifting movement of the brake body via a lever mechanism.
  • This thread brake is only able to either cancel or not cancel the braking effect, since a type of basic braking, as is possible with the disk-like brake parts according to DE-PS 34 46 567, is not given.
  • European patent application 0 524 429 also discloses a thread brake, in particular for use in the insertion of weft threads on weaving machines.
  • the thread brake consists of a motor-driven rotary shaft, which forms a recess on part of its circumference by reducing the cross-section, and of a resilient tab, which rests on the circumference of the shaft above the recess.
  • This reduction in cross section is intended to ensure that a weft thread with knots is also free to pass through the brake during the weft insertion.
  • the thread braking force becomes effective after the weft thread has been inserted in such a way that the recess is moved out of the passage area of the weft thread by motorized turning.
  • the weft is then between the peripheral surface of the shaft and the resilient tab on the shaft.
  • this thread brake also only allows two control options; either the weft is allowed to pass freely through the brake or the weft is clamped between the braking elements.
  • the object of the invention is therefore to develop a thread brake of the type mentioned in the preamble in such a way that the braking parameters, e.g. the braking force can be set within narrow limits and can be made reproducible.
  • the object is achieved in that the known weft brake, which consists of two resiliently lying against each other and the weft between them lamella-like parts is controlled by means of a disc magnet stepper motor.
  • a disc magnet stepper motor On the free end of the stepper motor shaft there is an eccentrically arranged and preferably rotationally symmetrical control element which is fixedly connected to the stepper motor shaft and is operatively connected to one of the lamella-like parts, and the stepper motor is connected to a programmable thread brake control in a signal-transmitting manner with regard to its active parameters.
  • Figure 1 shows a weft brake with lamellar leaf springs as a brake body.
  • a block 2 is arranged on a carrier or other machine part 1, in which two bolts 3, which can also be rotatable, are present.
  • the bolts 3 serve as a holder for the lamella-like parts, ie for the two leaf springs 6a and 6b.
  • a holder 5 is provided for the thread guide eyes 4.
  • the weft thread 11 is pulled in the direction of the arrow through the thread guide eyes 4 and between the lamellar leaf springs 6a and 6b.
  • the leaf springs 6a and 6b are more or less strongly placed against one another or completely lifted from one another.
  • the desired basic level of braking action can be set.
  • the servomotor 7 is arranged fixed on the bracket 10, which is connected to the bracket 5 (Fig. 2).
  • the electrical lead of the servomotor 7 is indicated by 7a.
  • a preferably rotationally symmetrical control element 9 is connected eccentrically to the free end of the control motor shaft 8 of the control motor 7.
  • the adjusting element 9 is operatively connected to the outer surface of one of the leaf springs; here with the leaf spring 6a.
  • Figure 3 shows the block diagram of the thread brake control.
  • the parameters to be implemented by the thread brake are set on the dialog terminal 12 and transmitted to the thread brake control 13, which is designed as a microcontroller and is serially coupled to the weaving machine control 14.
  • the servomotor 7 receives the actuating signals from the thread brake control 13.
  • FIG. 4 shows the improved weft thread brake, where instead of the block 2 for receiving the bolts 3 and instead of the holder 5, the thread eyelets 4, the bolts 3 and the servomotor 7 are fastened together on a circuit board 15.
  • a pattern-oriented braking and releasing of the weft thread is advantageously achieved compared to the prior art.
  • the braking forces are set via menus on the weaving machine dialog terminal. No mechanical adjustments are therefore necessary.
  • the servomotor used is a disc magnet stepper motor, which has no magnetic coupling between the phases and due to the disc magnet rotor has extremely low moment of inertia. As a result, you can accelerate faster and slow down more.
  • the stepper motor has a step angle of 3.6 degrees, which results in a very high resolution of the stroke (50 steps at 180 degrees).
  • Another advantage of the invention is that the braking parameters of the thread brake, such as braking speed, can be synchronized with the acceleration of the weft insertion elements, for example the gripper. This means that the necessary thread tension is always present, ie not too low but also not too high, which in turn almost eliminates the risk of thread breakage.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP93120354A 1993-03-05 1993-12-17 Frein de fil de trame avec freinage réglable Withdrawn EP0613970A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4306911 1993-03-05
DE4306911A DE4306911C1 (de) 1993-03-05 1993-03-05 Schußfadenbremse mit steuerbarer Bremswirkung

Publications (1)

Publication Number Publication Date
EP0613970A1 true EP0613970A1 (fr) 1994-09-07

Family

ID=6482015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120354A Withdrawn EP0613970A1 (fr) 1993-03-05 1993-12-17 Frein de fil de trame avec freinage réglable

Country Status (4)

Country Link
US (1) US5398731A (fr)
EP (1) EP0613970A1 (fr)
JP (1) JPH06264335A (fr)
DE (1) DE4306911C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136605A2 (fr) * 2000-03-18 2001-09-26 Lindauer Dornier Gesellschaft M.B.H Frein de fil, plus particulièrement frein de fil de trame pour métiers à tisser

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29500757U1 (de) * 1995-01-19 1996-05-15 Sobrevin Société de brevets industriels-Etablissement, Vaduz Anschlaggedämpfte Fadenbremse
DE19852794B4 (de) * 1998-11-16 2004-03-25 Lindauer Dornier Gmbh Steuerbare Schussfadenzubringer- und -klemmvorrichtung für Webmaschinen
DE59910006D1 (de) * 1999-01-12 2004-08-26 Sultex Ag Rueti Vorrichtung zum Abtrennen eines in ein Webfach einzutragenden Schussfadens und Webmaschine mit einer derartigen Vorrichtung
DE60017667T2 (de) * 1999-10-26 2005-07-07 L.G.L. Electronics S.P.A., Gandino Schussfadenbremse, insbesondere für Webmaschinen
DE10117879A1 (de) * 2001-04-10 2002-10-17 Iro Patent Ag Baar Fadendetektor
DE10151780C1 (de) * 2001-10-19 2003-05-22 Dornier Gmbh Lindauer Verfahren und Vorrichtung zur Beeinflussung der Fadenbremskraft einer zwischen einem Garnvorratssystem und einem Fadenspeicher einer Webmaschine angeordneten Schussfadenbremse
US7543610B2 (en) * 2006-06-16 2009-06-09 Sultex Ag Thread clamp for a rapier head
DE10218059A1 (de) * 2002-04-23 2003-11-13 Dornier Gmbh Lindauer Vorrichtung und Verfahren zur Regelung der Fadenspannung eines Fadens bei Textilverarbeitungsmaschinen
JP4003710B2 (ja) * 2003-07-23 2007-11-07 株式会社豊田自動織機 ジェットルームにおける緯入れ制御装置
DE502006003985D1 (de) * 2006-01-24 2009-07-30 Sultex Ag Gesteuerte Fadenbremse
DE102006025968B3 (de) * 2006-06-02 2007-11-29 Lindauer Dornier Gmbh Verfahren zum Klemmen eines Schussfadens in einer Düsenwebmaschine, insbesondere Luftdüsenwebmaschine, Klemmeinrichtung und Düsenwebmaschine
EP1918437A1 (fr) * 2006-11-02 2008-05-07 Sultex AG Procédé et dispositif pour l'insertion du fil de trame
US8960596B2 (en) 2007-08-20 2015-02-24 Kevin Kremeyer Energy-deposition systems, equipment and method for modifying and controlling shock waves and supersonic flow
US9908739B2 (en) * 2012-04-24 2018-03-06 Curt G. Joa, Inc. Apparatus and method for applying parallel flared elastics to disposable products and disposable products containing parallel flared elastics
CN103015008B (zh) * 2012-12-12 2014-03-26 青岛金三阳纺织机械有限公司 一种纬纱制动机构
US10669653B2 (en) * 2015-06-18 2020-06-02 Kevin Kremeyer Directed energy deposition to facilitate high speed applications
ITUB20155266A1 (it) * 2015-10-30 2016-01-30 Roj S R L Freno elettromagnetico pilotato per il controllo della tensione dei fili di trama in macchine tessili
TWI732251B (zh) * 2018-09-27 2021-07-01 義大利商桑德森力瑪集團有限公司 用於無梭子紡織機的緯紗切割裝置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568595A1 (fr) * 1984-08-02 1986-02-07 Alsacienne Constr Mat Tex Dispositif de commande positive pour frein de fil.
DE3446567C1 (de) * 1984-12-20 1986-05-07 Lindauer Dornier Gmbh, 8990 Lindau Schussfadenbremse mit stufenweise steuerbarer Bremswirkung
EP0475892A1 (fr) * 1990-09-10 1992-03-18 Sulzer RàœTi Ag Frein de fil pour métiers à tisser
EP0524429A1 (fr) * 1991-07-22 1993-01-27 SOBREVIN Société de brevets industriels-Etablissement Dispositif pour freiner distingtivement des fils ou des fils de fers et similaire
EP0561139A1 (fr) * 1992-03-16 1993-09-22 Gebrüder Loepfe Ag Dispositif de freinage de fil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH480255A (de) * 1968-10-23 1969-10-31 Sulzer Ag Fadenbremse
DE2119592C3 (de) * 1971-04-22 1975-02-20 Union Special Maschinenfabrik Gmbh, 7000 Stuttgart Gesteuerter Fadenspanner für Nähmaschinen
DE3637919A1 (de) * 1986-11-06 1988-05-19 Dornier Gmbh Lindauer Schussfadenbremse mit steuerbarer bremswirkung fuer schuetzenlose webmaschinen
BE1002841A3 (nl) * 1989-02-16 1991-06-25 Picanol N V Naamloze Vennoosch Inrichting voor het remmen van een inslagdraad in een weefmachine.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568595A1 (fr) * 1984-08-02 1986-02-07 Alsacienne Constr Mat Tex Dispositif de commande positive pour frein de fil.
DE3446567C1 (de) * 1984-12-20 1986-05-07 Lindauer Dornier Gmbh, 8990 Lindau Schussfadenbremse mit stufenweise steuerbarer Bremswirkung
EP0475892A1 (fr) * 1990-09-10 1992-03-18 Sulzer RàœTi Ag Frein de fil pour métiers à tisser
EP0524429A1 (fr) * 1991-07-22 1993-01-27 SOBREVIN Société de brevets industriels-Etablissement Dispositif pour freiner distingtivement des fils ou des fils de fers et similaire
EP0561139A1 (fr) * 1992-03-16 1993-09-22 Gebrüder Loepfe Ag Dispositif de freinage de fil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136605A2 (fr) * 2000-03-18 2001-09-26 Lindauer Dornier Gesellschaft M.B.H Frein de fil, plus particulièrement frein de fil de trame pour métiers à tisser
EP1136605A3 (fr) * 2000-03-18 2003-10-01 Lindauer Dornier Gesellschaft M.B.H Frein de fil, plus particulièrement frein de fil de trame pour métiers à tisser

Also Published As

Publication number Publication date
US5398731A (en) 1995-03-21
JPH06264335A (ja) 1994-09-20
DE4306911C1 (de) 1993-12-23

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