EP1646573A1 - Systeme de traitement de fil et tensiometre pour fil - Google Patents

Systeme de traitement de fil et tensiometre pour fil

Info

Publication number
EP1646573A1
EP1646573A1 EP04740823A EP04740823A EP1646573A1 EP 1646573 A1 EP1646573 A1 EP 1646573A1 EP 04740823 A EP04740823 A EP 04740823A EP 04740823 A EP04740823 A EP 04740823A EP 1646573 A1 EP1646573 A1 EP 1646573A1
Authority
EP
European Patent Office
Prior art keywords
thread
tensiometer
upstream
processing system
downstream
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
EP04740823A
Other languages
German (de)
English (en)
Other versions
EP1646573B1 (fr
Inventor
Per Ohlson
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.)
Iro AB
Original Assignee
Iro AB
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 Iro AB filed Critical Iro AB
Publication of EP1646573A1 publication Critical patent/EP1646573A1/fr
Application granted granted Critical
Publication of EP1646573B1 publication Critical patent/EP1646573B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H59/40—Applications of tension indicators
    • 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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/44—Tensioning devices for individual threads
    • 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 thread processing system of the type specified in the preamble of claim 1, and to a thread tensiometer of the type specified in the preamble of claim 10.
  • the integration of the tensiometer which is customary in weaving, is given.
  • the thread path between the withdrawal end of the storage body and the insertion device extends essentially straight up to the tensiometer area.
  • the axis of the storage body or the longitudinal axis of the thread delivery device is aligned with the straight thread path.
  • the tensiometer element is offset transversely with respect to the straight thread path, while stationary thread guide parts arranged upstream and downstream of the tensiometer element are positioned in the straight thread path. This results in a predetermined deflection angle of the thread on the tensiometer element. This deflection angle is usually between approximately 15 and 20 °, i.e.
  • the thread encloses an angle of approximately 175 ° to approximately 170 ° on the tensiometer element.
  • This arrangement inevitably also results in an additional deflection of the thread at each of the stationary thread guide parts arranged upstream and downstream from the tensiometer element, each with approximately half the predetermined deflection angle, i.e. about 7.5 ° to about 10 °, so that there are three deflection points in the area of the tensiometer, the total deflection angle of which corresponds approximately to twice the predetermined deflection angle on the tensiometer element required for the correct thread tension measurement.
  • the stationary thread guide elements are, for example, cross pins which rest on the side of the thread that lies opposite the side with which the thread contacts the tensiometer element.
  • the total deflection angle which is twice or more of the predetermined deflection angle, therefore means extreme mechanical loads on the thread, which are the cause of thread breaks and, since they vary, cause deviations in the predetermined arrival time of the free end of the inserted thread at the opposite fabric edge.
  • Another disadvantage is that the friction on the thread guide elements arranged upstream and downstream of the tensiometer element falsifies the thread tension measurement.
  • these disadvantages have so far been accepted as indispensable.
  • the invention has for its object to provide a thread processing system and a thread tensiometer, in which the mechanical loads on the thread are reduced to a necessary minimum in order to reduce the rate of thread breaks in intermittent delivery.
  • the total deflection angle for the thread is surprisingly simply reduced to a necessary minimum close to the predetermined deflection angle.
  • the thread essentially runs straight from the guide component of the thread delivery device to the tensiometer element and from this likewise essentially straight into the insertion device. This largely eliminates the undesired additional deflections that were previously regarded as essential in known arrangements. Nevertheless, the predetermined deflection angle on the tensiometer element does not vary. The result is a reduced quota of thread breaks and improved measuring accuracy.
  • the tensiometer is structurally designed so that the upstream thread path section is essentially straight and perpendicular to the attachment side. This eliminates the additional deflection of the thread on the path to the tensiometer element, so that only the deflection required for a perfect measurement is carried out with the predetermined deflection angle on the tensiometer element. On the outlet side of the tensiometer, there is likewise no further deflection because the downstream thread path section from the tensiometer element to the insertion device or the knitting system is also essentially straight.
  • the axis of the storage body coincides with the longitudinal axis of the thread delivery device. Therefore, the thread delivery device is mounted tilted relative to the downstream thread path section in a technically simple manner, preferably with a tiltable clamping bracket on a support arm of a delivery device stand.
  • the axis of the storage body or the longitudinal axis of the thread delivery device is appropriately tilted in this plane. If the thread delivery device is mounted on a support arm of the stand, this plane is expediently perpendicular to the longitudinal direction of the Support arm selected.
  • the level can have any position in the room, for example vertical, horizontal or inclined. The tilting position of the delivery device is adjusted accordingly.
  • the tensiometer can be arranged separately from the thread delivery device in the thread path. It is then only necessary to position it and the delivery device in such a way that the predetermined deflection angle between the upstream and downstream thread path sections is maintained without additional deflections.
  • the tensiometer can be attached to the thread delivery device.
  • it is preferably attached downstream of the thread guide component of the thread delivery device.
  • This component can be formed by a guide eye or an outlet eye of a controlled thread brake, which is attached to the thread delivery device.
  • the tensiometer is expediently attached directly to the controlled thread brake, the upstream thread path section extending straight through the controlled thread brake as far as the tensiometer element, extending the axis of the storage body.
  • stationary thread guide parts can be provided on the tensiometer, upstream and downstream of the tensiometer element, which the thread contacts with a deflection angle that approaches zero, but which is considerably smaller than half the predetermined deflection angle on the tensiometer element.
  • the predetermined deflection angle is advantageously between about 15 to 20 °.
  • the stationary thread guide parts of the tensiometer can be support surfaces oriented transversely to the thread, which the thread contacts on the same side with which it also releases its reaction force on the tensiometer element.
  • the thread guide parts only come into effect if the thread develops a tendency to oscillate. When running smoothly, the thread can contact these guide parts relatively weakly or not at all.
  • a very small deflection angle on each guide part sure that the thread does not lift off the guide part under the thread tension, so that the predetermined deflection angle is exactly maintained.
  • thread eyelets can be positioned in the straight path sections, which likewise do not produce any significant deflection.
  • the tensiometer is expediently combined in one module with a controlled thread brake, which is attached to the thread delivery device.
  • the housing of the tensiometer is mounted with the mounting side on the controlled thread brake in such a way that the straight thread passage through the controlled thread brake through the upstream thread path section in the tensiometer is at least largely extended to the tensiometer element, so that no additional deflection takes place here.
  • An additional deflection of the thread is also omitted on the output side of the tensiometer, because the downstream thread path section from the tensiometer element to the insertion device runs at least largely in a straight line.
  • 1 is a thread processing system with an assembly of a controlled thread brake and a tensiometer mounted thereon,
  • FIG. 2 shows a plan view of an alternative embodiment of a thread processing system of a rapier weaving machine
  • Fig. 3 is a side view of a thread processing system of a projectile loom
  • Fig. 4 is an enlarged detail view of the thread deflection in the tensiometer range.
  • a thread processing system S in FIG. 1 comprises a supply spool A for a thread Y, a thread delivery device F, for example a controlled thread brake CB with here, for example, a straight thread passage a ', a tensiometer T, which here in an assembly G is attached to the controlled thread brake CB, and an insertion device EV of a thread processing machine FVM, for example a weaving machine, for example a rapier or projectile weaving machine.
  • a thread processing machine FVM for example a weaving machine, for example a rapier or projectile weaving machine.
  • the thread delivery device F has a housing 1 with a housing extension 2.
  • a drive motor M (not highlighted) for a winding element 3.
  • the longitudinal axis of the thread delivery device F is indicated by x1 and coincides with an axis X of a drum-shaped storage body 4, on the outer circumference 5 of which the thread Y lying next to one another is formed and temporarily stored with the rotatingly driven winding element 3.
  • the storage body 4 has an exposed pull-off edge 6, over which (overhead pull-off) the thread Y is intermittently drawn off and inserted by the threading component EV by a thread guide component 7 in the extension of the axis X.
  • the thread guide component 7 is an inlet thread eyelet of the controlled thread brake CB. If the controlled thread brake CB is arranged further downstream and possibly separated from the thread delivery device F, then a stationary thread eyelet could be mounted on the arm 2 at this point.
  • a conventional thread brake B e.g. a bristle ring or a frusto-conical metal band (Flexbrake) held in a resilient version, in order to generate a predetermined, relatively constant thread tension during the pull-off and to control the pull-off movement of the thread Y.
  • a conventional thread brake B e.g. a bristle ring or a frusto-conical metal band (Flexbrake) held in a resilient version, in order to generate a predetermined, relatively constant thread tension during the pull-off and to control the pull-off movement of the thread Y.
  • the controlled thread brake CB has, as mentioned, the straight thread passage a 'between the thread guide eyelet 7 and an output eyelet 8.
  • the active tensiometer element E the tensiometer T contains, for example, a crossbar 9 on which the thread Y with its side in FIG. 1 is located is deflected with a predetermined deflection angle.
  • stationary thread guide parts 10, 11, for example support surfaces are provided at a distance, on which the thread Y is not or only slightly deflected.
  • the tensiometer housing 15 also has an exit thread eyelet 12 in which the thread Y is likewise not deflected, or is deflected only insignificantly, and then runs directly to the insertion device EV of the thread processing machine.
  • the tensiometer housing 15 has an attachment side 16 with which the tensiometer T in the assembly G is attached to the controlled thread brake CB.
  • a housing inlet 17 is provided, which is positioned such that the thread Y coming from the controlled thread brake CB extends in a largely straight extension of the thread passage a 'to the tensiometer element E, is deflected thereon with the predetermined deflection angle ⁇ and then likewise also largely runs straight through the exit side of the thread eyelet 12 to the insertion device EV.
  • an upstream thread path section a is formed, which extends from the thread guide component 7 through the controlled thread brake CB and the tensiometer housing 15 largely straight to the tensiometer element E, and also a downstream thread path section b, which extends from the tensiometer element E extends as far as possible straight up to the insertion device EV.
  • the axis X of the storage body 4 (which corresponds to the longitudinal axis x1 of the thread delivery device F in the embodiment shown) is in the direction determined by the current and downstream thread path sections a, b defined plane (for example a plane perpendicular to the floor in the drawing plane in FIG. 1) tilted upward relative to the downstream thread path section b with the predetermined deflection angle ⁇ .
  • the thread delivery device F is, as is customary in this technology, positioned in a stand D (not highlighted) with a clamping bracket 13 on a support arm 14.
  • the plane in which the axis X is tilted is largely perpendicular to the longitudinal direction of the support arm 14.
  • the assembly-side thread eyelet 8 of the controlled thread brake CB as well as the outlet-side thread eyelet 12 of the tensiometer housing 5 are positioned in the assembly G in FIG runs straight ahead with it the predetermined deflection angle ⁇ cannot change. If, on the other hand, the thread tends to shift slightly downward in the thread guide eyelets 8, 12, it will find enough space there, while the guide parts 10, 11 upstream and downstream of the tensiometer element then deflect the thread very slightly and guide it in such a way that the predetermined deflection angle does not change. Such a condition is indicated schematically in FIG. 4.
  • the possibly additional deflection angles ⁇ 1 and ⁇ 2 each go to zero and are in any case significantly smaller than half the predetermined deflection angle ⁇ of the thread Y on the tensiometer element.
  • FIG. 2 shows an embodiment of a weft thread processing system S on a rapier weaving machine W, specifically in a plan view, in order to illustrate that the predetermined deflection angle is determined here without additional deflections by arranging the weft thread delivery device F with its longitudinal axis x1, x laterally tilted is because the plane that is horizontal through the upstream and downstream weft path sections a, b of the tensiometer arranged here separately from the weft delivery device F is horizontal.
  • a controlled thread brake CB (indicated by dashed lines) can be provided, but is not absolutely necessary if, for example, the tensiometer T is required for other reasons to measure the thread tension or the thread tension curve during each delivery process.
  • the guide eyes 8, 12 could be provided at these positions.
  • a shed 18 can be seen in plan view, which is formed by warp threads K, between which the weft thread Y is inserted, by means of a rapier gripper 19 and a rapier rapier 20.
  • the rapier rapier 19 brings the free entry device EV Weft end up to approximately the middle of the shed 18 before the picker 20 takes over the free weft end and pulls completely through the shed 18 until it has reached the opposite fabric edge.
  • the plane defined by the upstream and downstream weft path sections a, b can have any position in space.
  • the weft thread delivery device F is tilted with its axis X1, X in this plane in such a way that the predetermined deflection angle ⁇ is generated on the tensiometer element E without any appreciable additional deflections.
  • a weft thread processing system S on a projectile weaving machine W is indicated in a side view.
  • the plane defined by the upstream and downstream weft path sections a, b lies here in the plane of the drawing and, for example, vertically with respect to the shed 18 with the warp threads K.
  • the insertion device EV has several projectiles 21, each of which is at one Entry clock enters a weft through the shed 18.
  • the axes X, X1 are arranged tilted relative to the downstream weft path section b with the predetermined deflection angle ⁇ .
  • a positioning of the weft delivery device with the axis X of the storage body 4 in relation to the tensiometer element E and the insertion device EV is set, with the exception of the predetermined deflection angle ⁇ , which is necessary for a precise measurement of the thread tension by the tensiometer element E. is necessary, no further additional significant deflection of the thread Y takes place.
  • the previously described arrangements of the tensiometer can also be provided with essentially only one deflection in the tensiometer area.
  • a controlled thread brake or another thread brake can be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

Selon l'invention, dans un système de traitement de fil (S), un dispositif d'apport de fil (F) comprenant un corps de stockage en forme de tambour (4) et un tensiomètre (C) qui présente un élément de tensiomètre (E), est disposé en amont d'un dispositif d'insertion (EV), le fil étant dévié d'un angle de déviation prédéterminé (a) au niveau dudit élément de tensiomètre (E). Selon l'invention, les composants du système de traitement de fil (S) sont disposés de sorte que des sections de trajectoire de fil amont et aval (a, b) sont rectilignes au moins dans une large mesure. A cet effet, l'axe (X) du corps de stockage (4) est incliné d'un angle valant au moins approximativement l'angle de déviation de fil prédéterminé (a), par rapport à la section de trajectoire de fil aval (b).
EP04740823A 2003-07-22 2004-07-08 Systeme de traitement de fil et tensiometre pour fil Expired - Lifetime EP1646573B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003133292 DE10333292A1 (de) 2003-07-22 2003-07-22 Faden-Verarbeitungssystem und Faden-Tensiometer
PCT/EP2004/007532 WO2005014456A1 (fr) 2003-07-22 2004-07-08 Systeme de traitement de fil et tensiometre pour fil

Publications (2)

Publication Number Publication Date
EP1646573A1 true EP1646573A1 (fr) 2006-04-19
EP1646573B1 EP1646573B1 (fr) 2009-07-08

Family

ID=34042023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740823A Expired - Lifetime EP1646573B1 (fr) 2003-07-22 2004-07-08 Systeme de traitement de fil et tensiometre pour fil

Country Status (4)

Country Link
EP (1) EP1646573B1 (fr)
CN (1) CN100475677C (fr)
DE (2) DE10333292A1 (fr)
WO (1) WO2005014456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019032007A1 (fr) 2017-08-08 2019-02-14 Iro Aktiebolag Frein de fil réglable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10168262B2 (en) 2013-12-13 2019-01-01 Rehabilitation Institute Of Chicago Pretensioner system and methods
CN105177831A (zh) * 2015-09-28 2015-12-23 嵊州市中森电子有限公司 一种带有张力调节装置的储纬器
CN105332149B (zh) * 2015-10-21 2018-05-29 泉州市新空间装饰工程有限公司 一种张力可控的储纬器

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JPH0226957A (ja) * 1988-07-12 1990-01-29 Nissan Motor Co Ltd 流体噴射式織機の緯入れ制御方法
BE1003243A3 (nl) * 1989-04-19 1992-02-04 Picanol Nv Inrichting voor het meten van de spanning in een textieldraad.
IT1248647B (it) * 1990-05-28 1995-01-26 Roy Electrotex Spa Strumento per eseguire la misura della tensione meccanica di fili, in particolare di fili di trama nell'alimentazione di telai di tessitura,ed alimentatore di trama equipaggiato con detto strumento di misura
DE4131656A1 (de) * 1991-09-23 1993-03-25 Iro Ab Verfahren und webmaschine
DE19544202B4 (de) * 1995-11-28 2007-01-04 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Einregeln einer nach einem Rechenspanner vorliegenden Fadenzugkraft in einer Textilmaschine
DE29601834U1 (de) * 1996-02-03 1997-06-05 Rieger, Walter, 77836 Rheinmünster Vorrichtung zur Messung kleiner Kräfte und daraus abgeleiteter Größen durch Meßwertaufnahme mittels elektrischer Sensoren, z.B. Dehnungsmeßstreifen
DE19633256C1 (de) * 1996-08-17 1997-10-09 Mayer Textilmaschf Vorrichtung zum Einstellen der Zugspannung eines Fadens bei dessen Ab- oder Aufwicklung von einer bzw. auf eine Spule
DE19635695A1 (de) * 1996-09-03 1998-03-05 Schlafhorst & Co W Fadenführungseinrichtung
KR100432266B1 (ko) * 1999-03-22 2004-05-22 아이알오피에이 악티엔게젤샤프트 파워 직조기 내의 씨실 삽입 최적화 및 감시 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005014456A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019032007A1 (fr) 2017-08-08 2019-02-14 Iro Aktiebolag Frein de fil réglable

Also Published As

Publication number Publication date
CN100475677C (zh) 2009-04-08
DE10333292A1 (de) 2005-02-10
WO2005014456A1 (fr) 2005-02-17
DE502004009728D1 (de) 2009-08-20
CN1816489A (zh) 2006-08-09
EP1646573B1 (fr) 2009-07-08

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