EP1783254B1 - Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen - Google Patents

Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen Download PDF

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Publication number
EP1783254B1
EP1783254B1 EP05425774A EP05425774A EP1783254B1 EP 1783254 B1 EP1783254 B1 EP 1783254B1 EP 05425774 A EP05425774 A EP 05425774A EP 05425774 A EP05425774 A EP 05425774A EP 1783254 B1 EP1783254 B1 EP 1783254B1
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EP
European Patent Office
Prior art keywords
pulley
warp yarn
rods
ropes
posts
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.)
Not-in-force
Application number
EP05425774A
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English (en)
French (fr)
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EP1783254A1 (de
Inventor
Angelo Gallizioli
Dario Magoni
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.)
Promatech SpA
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Promatech SpA
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Application filed by Promatech SpA filed Critical Promatech SpA
Priority to DE602005020150T priority Critical patent/DE602005020150D1/de
Priority to AT05425774T priority patent/ATE462030T1/de
Priority to EP05425774A priority patent/EP1783254B1/de
Priority to CNA2006101439346A priority patent/CN1958898A/zh
Publication of EP1783254A1 publication Critical patent/EP1783254A1/de
Application granted granted Critical
Publication of EP1783254B1 publication Critical patent/EP1783254B1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C11/00—Selvedge shedding mechanisms not forming part of main shedding mechanism

Definitions

  • the present invention refers to a warp yarn weaving device for selvedge formation in the manufacturing of cloths in weaving looms.
  • the invention refers to a device of this kind equipped with a drive of its own which is independent from the loom main motor.
  • warp yarns of such warp yarn assemblies run through the eye of corresponding smaller healds, divided into two series which are alternately shifted into opposite directions - in a fully similar way to what happens with the heald frames for cloth formation - thereby allowing warp yarns to interweave with weft yarns, according to a specific selvedge weave which is independent from that of the main cloth.
  • Some of such warp yarns can further be interwoven also horizontally, alternately in one direction and in the opposite one in one or more successive picks (in the leno heald weave), becoming twisted on the weft yarns in order to thereby obtain a tighter binding of the same, particularly in the selvedge outer area.
  • the selvedge obtained through these devices in fact is also called “tied” selvedge and withstands fraying better than ordinary selvedges or - the strength thereof being similar - it may consist of a smaller number of warp yarns, thereby allowing reduced false selvedge waste.
  • a warp yarn weaving device for selvedge formation which represents the prior art of reference of the present invention is for example the one described in EP-A-393.467 , the essential elements of which are reported as figs. 1 and 2 in the accompanying drawings.
  • it is in fact effectively suggested to accomplish the opening/closing movement of the warp yarns for selvedge formation through small heald assemblies (L1, L2) which are independent from the system of heald frames (Q) intended for cloth formation and controlled by a system of flexible stays (T1, T2) connected to the main motion of the loom by a single rope (F).
  • the small healds of each assembly (L1, L2) are mounted on shelf arms (B) integral with two posts (M) having alternate rectilinear motion.
  • the toothed wheel (R) hence determines a corresponding lowering of the other post (M2) and of the smaller heald assembly (L2) fixed thereto, thereby effecting the opening and closing movement of the warp yarns running through the central eyes formed in the small healds (L1, L2).
  • a warp yarn weaving device which partially reaches the scope of the invention, is the one described in EP-A-893 522 .
  • the continuous circular motion of the motor 1 is turned into an alternate rectilinear motion of sliders (C) through a particular toothed-wheel system.
  • the warp yarn weaving device of the present invention is shown in fig. 3.
  • the selvedge-forming device according to the invention has a general operative structure fully similar to the one described above with reference to patent EP-393.467 or EP-893.522 , except for what concerns the device operation means.
  • it comprises two small heald assemblies (L1, L2) mounted on shelf arms (B) integral with two posts (M) having alternate rectilinear motion.
  • Motor 1 is connected in an electrical axis with the main motor operating the loom, so as to have the same operation frequency thereof, but the law of motion thereof, the degree of advance/delay of each individual cycle and the width of the corresponding stroke can instead be adjusted at will, even in a different way for each individual device - among multiple devices mounted on the same loom - through a simple software control which implies no mechanical action on the device nor, even less so, on the loom.
  • the information required for such adjustment are supplied, in a manner known per se, by position sensors, Hall-effect sensors or other similar sensors according to the type of control which it is intended to give to the device.
  • the individual selvedge-forming devices of the invention are fully independent and autonomous, so that their implementation on the loom requires no further action, in addition to the electrical connection of motors 1, which is not the simple positioning of the devices in their working position on the supporting crossbar whenever desired and the fixing of the same in the new position.
  • motors 1 which is not the simple positioning of the devices in their working position on the supporting crossbar whenever desired and the fixing of the same in the new position.
  • the warp yarn weaving device of the present invention maintains the same type of operation previously described with reference to EP-893.522 providing however a noticeable improvement of the driving and guiding means of posts M.
  • the toothed-wheel system disclosed in this patent is in fact replaced by a double-grooved pulley 2 and by two corresponding flexible ropes 3, of a non-extendable type, which cooperate therewith in the way detailed below to directly drive rods A parallel to posts M and connected therewith, so as to make up an extension thereof.
  • Rods A are laterally offset with reference to posts M to create between them the space sufficient to house the double-grooved pulley 2, and their mechanical connection with posts M comprises a hinge constraint, so as to allow modest mounting or operation misalignments between rods and posts without inducing inner stresses in said members and with no play in the longitudinal movement direction of the posts.
  • Pulley 2 is keyed onto the shaft of electric motor 1 which provides to operate it in alternate rotational motions.
  • the flexible ropes 3, each housed in a corresponding groove of pulley 2 are restrained in a central point thereof to the same pulley 2 - in diametrically opposite positions - so as to eliminate any possible mutual sliding between the ropes 3 and pulley 2.
  • a particularly effective and quick system to join ropes 3 to pulley 2 is illustrated in figs. 5 .
  • each of ropes 3 consists of two half-ropes 3' and 3" which have, on the pulley side, an eye-shaped end.
  • each rod A is equipped with a lower anchoring site 4 and with an upper anchoring site 5.
  • each of rods A is controlled in its shifting by one or the other of ropes 3, i.e.
  • rods A are constrained to posts M, preferably with a constraint comprising a hinge as seen above, the rods themselves have no degree of freedom and it is hence possible to eliminate with this solution any guide system of the same, which guide system was instead present of course, in both the prior art solutions, in the form of sliding guides of the racks (C).
  • the frictions of the device manufactured according to the invention are hence noticeably reduced over those typical of the prior art, both due to the removal of the guide system of racks or sliders C, and due to the fact that the frictions of the pulley/rope system described above are substantially negligible over those of a toothed wheel/rack system.
  • the device of the invention is further fully free from lubrication problems.
  • rods A work with axial loads and with no intermediate guides, it is naturally necessary that the same have great axial and flexural rigidity, together with as small a mass as possible, since they are members performing quick alternate motion.
  • Preferred materials for the manufacturing of such rods are hence for example carbon fibres, fibre-reinforced plastic materials and the like.

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

Claims (6)

  1. Kettfadenwebeinrichtung in einer Webmaschine zur Randbildung oder zum Leno-Litzenweben an einem Tuchrand, von der Art, bei der zwei kleine Köpfchen (L1, L2), die mit entsprechenden zueinander parallelen Stäben (M) verblockt die Position von zwei einander entsprechenden Anordnungen der Kettfäden steuern, wobei die Stäbe (M) in einer alternierenden und symmetrischen gestreckten Bewegung von einem Elektromotor (1) angetrieben werden, der ein Paar von Antriebsstangen (A1, A2) parallel zu den Stäben (M) steuert und mit diesen ohne Längsspiel verbunden ist, dadurch gekennzeichnet, dass der Motor (1) alternierende Drehbewegungen ausführt und die Stangen (A1, A2) durch ein System von Strängen (3) steuert, die ohne Spiel an den Stangen (A1, A2) fixiert sind und über wenigstens eine Antriebsscheibe (2), die mit dem Motor (1) koaxial ist und mit dessen Abtriebswelle verkeilt ist, in Bewegung gebracht werden, wobei die Stränge (3) auf der Antriebsscheibe (2) in einem abrollenden Zustand ohne Gleiten ruhen.
  2. Kettfadenwebeinrichtung nach Anspruch 1, wobei die Scheibe (2) zwei parallele Kerben aufweist und das System von Strängen aus einem Paar von flexiblen und nichtdehnbaren Seilen (3) besteht, die beide von einer jeweiligen Kerbe der Scheibe (2) aufgenommen werden und an dieser in einer zentralen Position des Seiles in einander diametral gegenüberliegenden Scheibenpositionen gesichert sind, wobei die freien Enden jeder der Seile (3) ohne Spiel an einem Paar von oberen und unteren Verankerungsorten (4, 5) jeweils an den Stangen gesichert sind.
  3. Kettfadenwebeinrichtung nach Anspruch 2, wobei jedes der Seile (3) aus zwei Halbseilen (3', 3"), die zwei ösenförmige scheibenseitige Enden aufweisen, wobei die Enden (in 8) durch Schraubmittel an der lateralen Fläche der Scheiben (2) außerhalb der Kerbe, die das Halbseil (3', 3") aufnimmt, gesichert sind.
  4. Kettfadenwebeinrichtung nach Anspruch 3, wobei die beiden Kerben der Scheiben (2) ausgeschnittene Abschnitte ihrer inneren Begrenzungswände in diametral einander gegenüberliegenden Scheibenpositionen haben, die zum Aufnehmen der Endlängen der Halbseile (3', 3 "), die aus den Kerben kommen und in Richtung auf die Schraubenbefestigungsmittel verlaufen, eingerichtet sind, wobei die Befestigungsmittel in entsprechenden Ausnehmungen (6, 7), die an der lateralen Fläche der Scheiben (2) ausgebildet sind, aufgenommen werden und in Kommunikation mit den ausgeschnittenen Bereichen der Innenwandung der Kerben sind.
  5. Kettfadenwebeinrichtung nach einem der Ansprüche 1-4, wobei während der alternierenden Drehbewegung der Scheiben (2) die Stangen konstant tangential zu dem Außenumfang der Scheiben (2) bleiben.
  6. Kettfadenwebeinrichtung nach Anspruch 1 oder 5, wobei der Elektromotor auf einer Trägerbasis montiert ist, die mit Schnellbefestigungsmitteln an einer willkürlichen Position auf einem Webmaschinenquerelement ausgerüstet ist, wobei die Stützbasis frei von festen Führungselementen ist, die die Steuerstangen längs führen.
EP05425774A 2005-11-04 2005-11-04 Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen Not-in-force EP1783254B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE602005020150T DE602005020150D1 (de) 2005-11-04 2005-11-04 Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen
AT05425774T ATE462030T1 (de) 2005-11-04 2005-11-04 Kettfädenwebvorrichtung zur webkantenbildung in webmaschinen
EP05425774A EP1783254B1 (de) 2005-11-04 2005-11-04 Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen
CNA2006101439346A CN1958898A (zh) 2005-11-04 2006-11-03 织机中形成布边的经纱织造装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05425774A EP1783254B1 (de) 2005-11-04 2005-11-04 Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen

Publications (2)

Publication Number Publication Date
EP1783254A1 EP1783254A1 (de) 2007-05-09
EP1783254B1 true EP1783254B1 (de) 2010-03-24

Family

ID=36051427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05425774A Not-in-force EP1783254B1 (de) 2005-11-04 2005-11-04 Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen

Country Status (4)

Country Link
EP (1) EP1783254B1 (de)
CN (1) CN1958898A (de)
AT (1) ATE462030T1 (de)
DE (1) DE602005020150D1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT2063007E (pt) * 2007-11-21 2010-12-22 Groz Beckert Kg Dispositivo para fabrico de gazes
EP2530194B1 (de) * 2011-06-01 2014-03-05 Groz-Beckert KG Drehereinrichtung mit Hebelgetriebe und Abdeckteil
CN103334209B (zh) * 2013-07-19 2015-10-28 安徽丹凤集团桐城玻璃纤维有限公司 带有助纱装置的玻璃纤维喷气织机
CN105780270A (zh) * 2016-05-09 2016-07-20 浙江理工大学 一种电机连续运转的电子绞边机构
BE1024912B1 (nl) * 2017-01-13 2018-08-16 VAN DE WIELE Michel NV Zelfkantinrichting

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1230002B (it) 1989-04-21 1991-09-20 Somet Soc Mec Tessile Dispositivo mobile per eseguire la legatura a giro inglese dei bordi di tessuti in formazione su telai di tessitura senza navette.
IT1293618B1 (it) 1997-07-17 1999-03-08 Vamatex Nuova Spa Dispositivo di comando per la legatura a giro inglese in telai di tessitura
JPH11279890A (ja) * 1998-03-27 1999-10-12 Toyota Autom Loom Works Ltd 織機における耳形成装置
ITMI20022044A1 (it) * 2002-09-26 2004-03-27 Promatech Spa Dispositivo di legatura della falsa cimosa in telai tessili

Also Published As

Publication number Publication date
CN1958898A (zh) 2007-05-09
DE602005020150D1 (de) 2010-05-06
ATE462030T1 (de) 2010-04-15
EP1783254A1 (de) 2007-05-09

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