EP1141456B1 - Fadenverarbeitungssystem und verfahren zum liefern von schussfäden - Google Patents
Fadenverarbeitungssystem und verfahren zum liefern von schussfäden Download PDFInfo
- Publication number
- EP1141456B1 EP1141456B1 EP99964602A EP99964602A EP1141456B1 EP 1141456 B1 EP1141456 B1 EP 1141456B1 EP 99964602 A EP99964602 A EP 99964602A EP 99964602 A EP99964602 A EP 99964602A EP 1141456 B1 EP1141456 B1 EP 1141456B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- signal
- thread
- tensiometer
- weft
- 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 - Lifetime
Links
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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
Definitions
- the invention relates to a thread processing system according to the preamble of Claim 1 and a method for supplying weft threads according to the preamble of claim 8.
- Thread brake With a projectile loom is the braking effect of the thread brake at the beginning and end of the entry increase and eliminate as much as possible in the intermediate phase. at a jet weaving machine is only an increased braking effect towards the end of the entry Thread brake useful, e.g. to the impact of the dreaded stretching or Mitigate lashes.
- the tensiometer the probe with the weft thread is in direct contact, delivers the actual one in real time, so to speak Signals representing thread tension or a course of the thread tension representative waveform.
- the signal evaluation device controls with this actual signal via the thread brake a target thread tension curve, whereby the control loop of the tensiometer, the signal evaluation device and the thread brake is closed over the thread itself. From the permanent mechanical Contact between the weft and the probe of the tensiometer results however, a problem affecting the control accuracy caused by a between the delivery device and the entry device of the loom also in the Elongation tension prevailing between weft thread insertion processes.
- This tensile stress generates a signal with a via the tensiometer certain signal value that can drift due to external circumstances.
- operational vibration in such a thread processing System of course also influence the tension weft and for the tensiometer can be felt, so that the signal is heard even when the weft thread is at rest developed a tendency to drift.
- the signal evaluation device is unable to in the control a predetermined or fixed signal value as a reference to consider. In other words, there is no reliable calibration or re-setting; preferably zero, as for high control accuracy would be required.
- the invention has for its object to construct a thread processing system simple way to design the control accuracy of the thread brake control is high, or to specify a method with which in a thread processing System the control accuracy for the thread tension is improved.
- the meaningful thread tension zero signal is deliberately made by the calibration for the signal evaluation device. This allows with structurally little effort increase the control accuracy.
- the separator can be passive during the actual control process and then has no influence on the weft.
- the separating device is actuated by means of an adjustment drive, which is expediently connected to a control device.
- a signal is transmitted to the signal evaluation device, so that the thread tension zero signal as a reference for calibration or Reset considered.
- the weft thread is structurally simple from the probe of the tensiometer ventilated.
- the ventilation element that carries out the separation only works for those Calibration on the weft thread, which is expedient anyway, influences on the other hand, the thread run no longer later.
- the probe or the separating device is adjusted to the passive position relative to the weft thread and thus from Thread separated.
- the venting element is a thread deflector in the form of a Rod or a thread eyelet.
- the adjustment drive is structurally simple and reliable formed by an electromagnet, an electric motor or pneumatic cylinder.
- a calibration part for calibration is in the signal evaluation device or reset, which then takes the thread tension zero signal into account, when the separation has taken place.
- calibration is carried out when the weft thread is inserted and / or anyway is not braked.
- a temporary separation between the Weft and the probing probe of the tensiometer made to a to obtain meaningful and clear thread tension zero signal with which the calibration is carried out.
- a thread processing system S in FIG. 1 has a thread delivery device F for one Loom L containing a shed H (a rapier loom, one Projectile loom or a jet loom), with the thread delivery device F pulls a weft Y from a supply spool 1, this by means of a rotary drive 2 temporarily stored in turns on a storage drum 3 and the Loom L supplied intermittently.
- the rotary drive 2 is via a control device C of the delivery device F controlled In the thread path between the delivery device F and an entry device E at the entrance of a shed H of the weaving machine L. are a controllable thread brake B of any type and downstream of it Arranged tensiometer T, to which a separating device P is assigned.
- the thread brake B can be a multi-disc brake, a deflection brake, an air nozzle brake, be a band brake or the like.
- brake elements 4 of at least one of which is adjustable relative to the other by means of an actuator 5, to vary the braking effect for the weft Y.
- the tensiometer T touches the weft with a probe 7, which belongs to a converter 8, with which a signal f representing the thread tension can be generated. On both sides of the Probe 7 can support weft Y on stationary thread guide elements 6 his.
- the separating device P has a ventilation element 9, for. B. in rod form or as a thread eyelet or fork-shaped, which is coupled to an actuator 10 and transversely to the thread running direction between the passive position and shown in the solid a separation position (shown in dashed lines) is adjustable back and forth.
- a ventilation element 9 By means of the ventilation element 9, the weft Y can be separated from the probe 7 of the tensiometer T. Then the converter 8 outputs a signal f0, i.e. a thread tension zero signal.
- the actuator 10 can be connected to a controller M.
- An electronic signal evaluation device G is also provided, which has a calibration part K can contain.
- the signal evaluation device G can have an input part J assigned, with which certain parameters or control curves can be set, the signal f1 of the signal evaluation device G or its calibration part K are feedable.
- the converter 8 of the tensiometer T is signal-transmitting to the calibration part K. connected, and also the control M (or the actuator 10) the separating device P. From the control M to the calibration part K a Message d on the respective position of the venting element 9, preferably the separation position, are given.
- the signal evaluation device E can also be connected be to the control device C of the delivery device G and / or a drive R of the Loom L, which in turn can also be connected to the control device C. can.
- control device C can also be connected to the controller M. his. Signals "a” can be sent from the drive R of the weaving machine L to the control device C and / or the control M and / or the signal evaluation device G transmitted are, the signals "a", for example, the respective angle of rotation or certain Represent rotation angle values of the main shaft of the weaving machine L. Of the Control device C can send signals "a1" to the control M and / or the signal evaluation device G which signals "a1" are transmitted e.g. the operating status of the delivery device.
- a signal b can be delivered to the actuator 5 of the thread brake B, which is a function of the signal f or / and f1, or is proportional to them, around the thread brake B to control accordingly.
- the signal evaluation device G and the tensiometer T becomes a closed loop via the weft Y itself formed with which, taking into account the tapped thread tension a thread tension curve is generated which e.g. is adapted to the web conditions in the weaving machine L, the thread quality, the fabric width etc.
- the tensiometer T can be based on piezoelectric, piezoresistive, triboelectric, capacitive way or work with strain gauges, taking from the acting force of the weft Y, the signal f is derived, which is the thread tension represents. If the separating device P is moved into the separating position, then the probe 7 is no longer acted upon by the weft Y. From the tensiometer T is a thread tension zero signal f0, with the help of which Signal evaluation device G or its calibration part K a calibration or Reset.
- the middle part of the diagram in FIG. 2 illustrates the current supply to the thread brake B, i.e. the signal b (indicated for example by the current I).
- the lower Part of the diagram shows the energization or control of the actuator 10, i.e. the signal c (for example in mV).
- the tensiometer T then outputs a thread tension zero signal f0 generates synchronously with the delivery of the signal c (or during the duration of the signal c and the separation position of the ventilation element 9) the signal d is transmitted to the calibration part K, as a kind of confirmation that the signal now present is the thread tension zero signal f0.
- the signal signal could also come from controller C or drive R.
- a calibration is carried out in the signal evaluation device G or in its calibration part K. k or a reset, preferably to a zero value k, is carried out, so that the signal device G always a reliable reference value for the later Regulation can take into account.
- the probe 7 comes into contact with the weft again Y.
- the thread brake is controlled during the next entry process B again taking into account the signal f, but after the one that took place previously Calibration or reset.
- the ventilation element 9 is a thread eyelet, a fork or a rod that the Weft Y between the two stationary thread guide members 6 so far from the Path deflects that a separation between the probe 7 and the weft Y takes place.
- the two stationary thread guide members 6 are not absolutely necessary.
- FIG Thread eyelet 6 'or a movable thread guide member provided the venting element 9 of the separator P forms.
- the actuator 10 directly acts on the thread guide member 6 'to do this from the one drawn in solid lines
- both thread guide members 6 ' are arranged on a fork-like carrier 11, which is drawn by means of the actuator 10 from that in solid lines Allow the working position of the tensiometer T to be shifted down to a separation position (Not shown).
- the two thread guide members 6 ' e.g. closed thread eyelets, in this case form the ventilation element (s) of the separation device P.
- the probe 7 of the tensiometer T is, for example, an annular piezo element 12 with the converter 8.
- the converter 8 is, for example, in a vertical guide 13 slidably held and can by means of the actuator 10 the position shown in solid lines for scanning the thread tension in move the dashed passive position down so that then the weft does not touch the annular piezo element 12.
- an actuator 10 designed as a rotary drive is used as the separating device P. provided with which a rod-shaped release element 9 in the direction of an arrow 14 the passive position drawn in solid lines into a separation position (dashed) is adjustable to the supported between the stationary thread guide members 6 Separate weft thread from probe 7 of tensiometer T.
- the Probe 7 is e.g. rod-shaped and can with the converter 8 via not shown Strain gauges or a triboelectric element or the like. Coupled.
- the calibration could even be done during an entry process, because the lifting process has no significant influence on the thread, possibly in one Phase in which there is no braking.
- the tensiometer T could also be upstream of the Thread brake can be arranged.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
- Fig. 1
- schematisch ein Fadenverarbeitungssystem,
- Fig. 2
- ein Diagramm, das den Fadenspannungsverlauf, die Fadenbrems-Strombeaufschlagung und die Steuerung der Separier-Einrichtung für eine Greiferschützenwebmaschine zeigt, und
- Fig. 3 - 6
- verschiedene Ausführungsformen für mit einem Tensiometer kombinierte Separiereinrichtungen.
Claims (9)
- Fadenverarbeitungssystem (S), mit einem Schussfaden-Liefergerät (F) und einer Webmaschine (L), wobei im Schussfadenweg zum Webfach (H) wenigstens eine durch einen Aktuator (5) betätigbare, mittels einer elektronischen Signal-Auswerteeinrichtung (G) steuerbare Fadenbremse (B) und der Fadenbremse zugeordnet ein mit einer Sonde (7) am Schussfaden (Y) angreifender, wenigstens ein die Fadenspannung repräsentierendes Signal (f) liefernder Tensiometer (T) angeordnet sind, und der Tensiometer (T) mit der Signal-Auswerteeinrichtung (G) in signalübertragender Verbindung steht, um die Fadenbremse (B) in Abhängigkeit von der festgestellten Fadenspannung zu steuern, dadurch gekennzeichnet, dass im Fadenweg beim Tensiometer (T) eine in eine Separierstellung verstellbare Separier-Einrichtung (P) vorgesehen ist, mit der in der Separierstellung zwecks eines Null-Fadenspannungs-Signals (f0) für die Signal-Auswerteeinrichtung (G) eine vorübergehende Separierung zwischen der Sonde (7) und dem Schussfaden (Y) herstellbar ist.
- System nach Anspruch 1, dadurch gekennzeichnet, dass die Separier-Einrichtung (P) einen an eine Steuervorrichtung (M) angeschlossenen Verstellantrieb (10) aufweist, und dass zwischen der Steuervorrichtung (M) oder dem Verstellantrieb (10) und der Signal-Auswerteeinrichtung (G) eine Informationsverbindung für ein Meldesignal (d) zum Melden der Stellung der Separiereinrichtung (P), vorzugsweise deren Separierstellung, vorgesehen ist.
- System nach Anspruch 1, dadurch gekennzeichnet, dass die Separier-Einrichtung (P) wenigstens ein am Schussfaden (Y) zumindest in der Separierstellung zum Angriff bringbares Lüftelement (9, 6') aufweist.
- System nach Anspruch 1, dadurch gekennzeichnet, dass die Separiereinrichtung (P) an der Sonde (7) bzw. dem Tensiometer zum verstellenden Angriff bringbar ist
- System nach Anspruch 3, dadurch gekennzeichnet, dass das Lüftelement (9) ein Fadenablenker in Form eines Stabes oder einer Fadenöse ist.
- System nach Anspruch 2, dadurch gekennzeichnet, dass der Verstellantrieb (10) einen Elektromagneten, einen Elektromotor oder einen Pneumatikzylinder aufweist.
- System nach Anspruch 1, dadurch gekennzeichnet, dass in der Signal-Auswerteeinrichtung (G) ein Kalibrierteil (K) enthalten ist, mit dem bei gemeldeter Separierstellung eine Kalibrierung (k) des Signals (f) auf einen vorbestimmten Ausgangswert, vorzugsweise den Fadenspannungs-Nullwert (f0) ausführbar ist.
- Verfahren zum intermittierenden Liefern von Schussfäden (Y) von einem Liefergerät (F) in eine Webmaschine (L), bei dem während jedes Eintragvorgangs die Schussfadenspannung mittels einer gesteuerten Fadenbremse (B) variiert wird, wobei die Fadenbremse in einen geschlossenen Regelkreis eingegliedert ist, in welchem eine Signal-Auswerteeinrichtung (G) die Fadenbremse zumindest abhängig von einem stromab der Fadenbremse durch eine Tensiometer-Sonde (7) am Faden abgegriffenes Fadenspannungssignal (f) regelt, dadurch gekennzeichnet, dass der Schussfaden (Y) und die Tensiometer-Sonde (7) vorübergehend separiert werden und für einen späteren Regelvorgang bezüglich des Fadenspannungs-Signals (f) eine Kalibrierung (k) mittels eines Fadenspannungs-Nullsignals (f0) durchgeführt wird.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Separierung und Kalibrierung in einer Pause zwischen Eintragvorgängen vorgenommen werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19858682 | 1998-12-18 | ||
DE19858682A DE19858682A1 (de) | 1998-12-18 | 1998-12-18 | Fadenverarbeitungssystem und Verfahren zum Liefern von Schußfäden |
PCT/EP1999/010086 WO2000037721A1 (de) | 1998-12-18 | 1999-12-17 | Fadenverarbeitungssystem und verfahren zum liefern von schussfäden |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1141456A1 EP1141456A1 (de) | 2001-10-10 |
EP1141456B1 true EP1141456B1 (de) | 2003-04-02 |
Family
ID=7891709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99964602A Expired - Lifetime EP1141456B1 (de) | 1998-12-18 | 1999-12-17 | Fadenverarbeitungssystem und verfahren zum liefern von schussfäden |
Country Status (5)
Country | Link |
---|---|
US (1) | US6418977B1 (de) |
EP (1) | EP1141456B1 (de) |
CN (1) | CN1098943C (de) |
DE (2) | DE19858682A1 (de) |
WO (1) | WO2000037721A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10153326A1 (de) * | 2001-10-29 | 2003-05-08 | Iropa Ag | Fadenverarbeitendes System |
DE10210911A1 (de) | 2002-03-04 | 2003-09-18 | Picanol Nv | Vorrichtung zum Erfassen und/oder Einstellen einer Zugkraft in einem Faden |
DE10348872A1 (de) * | 2003-10-21 | 2005-05-25 | Iro Ab | Verfahren zum Einstellen der Fadenspannung, und Projektil- oder Greiferwebmaschine |
FR2864555B1 (fr) * | 2003-12-24 | 2006-01-27 | Staubli Lyon | Procede de controle de la tension d'alimentation d'au moins un fil de trame, dispositif d'alimentation en fil de trame et metier a tisser equipe d'un tel dispositif |
CZ298600B6 (cs) * | 2005-08-05 | 2007-11-21 | Technická univerzita v Liberci | Zarízení pro prohoz útku prošlupem tkacího stroje |
EP1961686B1 (de) * | 2007-02-20 | 2016-09-14 | Iro Ab | System zur Überwachung und Einstellung einer Garnspannung |
WO2009025803A1 (en) | 2007-08-20 | 2009-02-26 | Kevin Kremeyer | Energy-deposition systems, equipment and methods for modifying and controlling shock waves and supersonic flow |
ITMI20120141A1 (it) * | 2012-02-03 | 2013-08-04 | Btsr Int Spa | Sistema e metodo per la gestione semplificata dell'alimentazione di una pluralita' di fili a tensione e/o velocita' costante ad una macchina tessile |
US10669653B2 (en) * | 2015-06-18 | 2020-06-02 | Kevin Kremeyer | Directed energy deposition to facilitate high speed applications |
IT202200016710A1 (it) * | 2022-08-04 | 2024-02-04 | Itema Spa | Dispositivo di rimozione automatica di fili di trama errati per macchine tessili ad aria e relativo metodo |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH639152A5 (de) * | 1979-05-04 | 1983-10-31 | Loepfe Ag Geb | Elektronischer schussfadenwaechter an einer webmaschine mit greiferschuetzen. |
IT1227077B (it) | 1988-09-08 | 1991-03-14 | Vamatex Spa | Sistema per controllare la tensione della trama alimentata ad un telaio tessile senza navette. |
DE4131656A1 (de) | 1991-09-23 | 1993-03-25 | Iro Ab | Verfahren und webmaschine |
DE4131652A1 (de) * | 1991-09-23 | 1993-04-01 | Iro Ab | Webmaschine und eintragbremse fuer webmaschinen |
DE4323748C1 (de) | 1993-07-15 | 1994-07-14 | Dornier Gmbh Lindauer | Schußfaden-Bremseinrichtung für Webmaschinen |
US5476122A (en) | 1993-03-05 | 1995-12-19 | Lindauer Dornier Gesellschaft Mbh | Weft thread brake responsive to yarn characteristics in a loom |
EP0756028B1 (de) | 1995-07-24 | 2000-01-19 | Sulzer RàTi Ag | Elektromagnetische Fadenbremse und Webmaschine mit einer Fadenbremse |
IT1283381B1 (it) * | 1996-07-31 | 1998-04-17 | Roj Electrotex Nuova Srl | Procedimento per controllare l'inserimento del filo di trama in un telaio di tessitura. |
-
1998
- 1998-12-18 DE DE19858682A patent/DE19858682A1/de not_active Withdrawn
-
1999
- 1999-12-17 EP EP99964602A patent/EP1141456B1/de not_active Expired - Lifetime
- 1999-12-17 CN CN99815689A patent/CN1098943C/zh not_active Expired - Lifetime
- 1999-12-17 US US09/868,370 patent/US6418977B1/en not_active Expired - Fee Related
- 1999-12-17 WO PCT/EP1999/010086 patent/WO2000037721A1/de active IP Right Grant
- 1999-12-17 DE DE59904885T patent/DE59904885D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19858682A1 (de) | 2000-06-21 |
EP1141456A1 (de) | 2001-10-10 |
US6418977B1 (en) | 2002-07-16 |
DE59904885D1 (de) | 2003-05-08 |
WO2000037721A1 (de) | 2000-06-29 |
CN1098943C (zh) | 2003-01-15 |
CN1333848A (zh) | 2002-01-30 |
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