EP0065231B1 - Arrangement for controlling the movement of the weft conveying grippers in shuttleless looms - Google Patents

Arrangement for controlling the movement of the weft conveying grippers in shuttleless looms Download PDF

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Publication number
EP0065231B1
EP0065231B1 EP82103943A EP82103943A EP0065231B1 EP 0065231 B1 EP0065231 B1 EP 0065231B1 EP 82103943 A EP82103943 A EP 82103943A EP 82103943 A EP82103943 A EP 82103943A EP 0065231 B1 EP0065231 B1 EP 0065231B1
Authority
EP
European Patent Office
Prior art keywords
gearwheels
straps
arrangement
slots
movement
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
Application number
EP82103943A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0065231A1 (en
Inventor
Nello Pezzoli
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.)
Vamatex SpA
Original Assignee
Vamatex SpA
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 Vamatex SpA filed Critical Vamatex SpA
Priority to AT82103943T priority Critical patent/ATE18444T1/de
Publication of EP0065231A1 publication Critical patent/EP0065231A1/en
Application granted granted Critical
Publication of EP0065231B1 publication Critical patent/EP0065231B1/en
Expired 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/275—Drive mechanisms
    • D03D47/276—Details or arrangement of sprocket wheels
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/271—Rapiers
    • D03D47/273—Rapier rods
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms

Definitions

  • the invention relates to an arrangement for controlling the movement of the weft conveying gripper in shuttleless looms, of the type using a pair of gearwheels which perform short reciprocating rotations at the loom shed ends, and a pair of gripper advancement straps having longitudinally aligned central slots meshing with the teeth of said gearwheels.
  • the DE-B 20 20 765 discloses an arrangement, in which the strap having longitudinally extending slots positioned at close distance is laid around a wheel without special guide for the strap.
  • this object is solved in that the arrangement comprises continuous fixed guides extending over a wide arc of the gearwheels along the periphery thereof and acting on both lateral portions of the outside surface only of the respective strap whereby the latter is held in constant and precise engagement with said gearwheels along said arc.
  • the arrangement according to the invention comprises, on each side of a loom, a gearwheel 1 controlling a strap 2, to impart on said strap and on the gripper carried thereby the to-and-fro movements which govern the insertion of the weft yarn into the loom shed.
  • the strap 2 comprises at its centre a row of elongated rectangular slots 3 which are clearly shown in Figures 4 and 5. Through such slots, the strap 2 meshes with the peripheral teeth 4 - of corresponding or complementary shape (see Figure 3) - of the gearwheel 1, over a wide arc of which it extends, said teeth being also distinguished by their round-edged periphery.
  • the arc of the gearwheel 1, over which the strap 2 extends, is defined by guides 5 which partly surround the wheel close thereto.
  • the guides 5 are U-shaped so as to act at 6 and 7 on the lateral strap portions to the side of the slots 3, and thereby ensure a continuous and reliable engagement into said slots of the base of the teeth 4, which substantially project from the periphery of the gearwheel 1.
  • the thorough engagement of the gearwheel teeth 4 into the strap slots 3 - made precise by the shape of the teeth and slots, and made continuous and accurate by the presence and configuration of the guides 5 - determines the mutual positioning between the strap and the gearwheels with a precision so far inconceivable, thereby allowing a particularly even distribution of the loads over the teeth and thus less wear, reduced temperatures and less noise.
  • the elongated rectangular shape of the strap slots 3 substantially reduces the bending stresses in the straps and facilitates their deformation when meshing with the gearwheels, with no harmful consequences as far as strength and wear.
  • the straps bend with a greater continuity than those of conventional technique (which comprise much smaller and, in particular, less elongated slots).
  • the round-edged periphery of the gearwheel teeth 4 ensures a smooth engagement, with no impact or wear, between the gearwheels 1 and the straps 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Jib Cranes (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Specific Conveyance Elements (AREA)
EP82103943A 1981-05-15 1982-05-06 Arrangement for controlling the movement of the weft conveying grippers in shuttleless looms Expired EP0065231B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82103943T ATE18444T1 (de) 1981-05-15 1982-05-06 Vorrichtung zum kontrollieren der bewegung des bandgreifers an schuetzenlosen webmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21738/81A IT1135816B (it) 1981-05-15 1981-05-15 Disposizione di comando del moto delle pinze di trasporto della trama in telai di tessitura senza navette
IT2173881 1981-05-15

Publications (2)

Publication Number Publication Date
EP0065231A1 EP0065231A1 (en) 1982-11-24
EP0065231B1 true EP0065231B1 (en) 1986-03-05

Family

ID=11186169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103943A Expired EP0065231B1 (en) 1981-05-15 1982-05-06 Arrangement for controlling the movement of the weft conveying grippers in shuttleless looms

Country Status (11)

Country Link
EP (1) EP0065231B1 (enExample)
JP (1) JPS584848A (enExample)
AT (1) ATE18444T1 (enExample)
BR (1) BR8202813A (enExample)
CS (1) CS228926B2 (enExample)
DD (1) DD202463A5 (enExample)
DE (1) DE3269574D1 (enExample)
ES (1) ES8305439A1 (enExample)
IT (1) IT1135816B (enExample)
MX (1) MX157727A (enExample)
PT (1) PT74898B (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE896771A (nl) * 1983-05-18 1983-11-18 Picanol Nv Grijperaandrijving voor weefmachines.
CH653715A5 (fr) * 1983-07-01 1986-01-15 Moulding Sa Mecanisme de transformation de metiers a tisser a navette en metiers a tisser sans navette.
DE3328889A1 (de) * 1983-08-10 1985-02-28 Hörmann KG Antriebs- und Steuerungstechnik, 4834 Harsewinkel Geraet zur ueberfuehrung einer rotatorischen in eine translatorische bewegung
JPS6111779U (ja) * 1984-06-22 1986-01-23 津田駒工業株式会社 フレキシブルレピア織機のバンドガイド装置
DE3709889A1 (de) * 1987-03-26 1988-10-13 Dornier Gmbh Lindauer Antriebsvorrichtung fuer die greiferstangen von schuetzenlosen webmaschinen
BE1009470A3 (nl) * 1995-06-27 1997-04-01 Picanol Nv Vertand wiel voor het aandrijven van een grijperband bij een weefmachine.
JPH11107113A (ja) * 1997-09-30 1999-04-20 Toyota Autom Loom Works Ltd レピア織機における緯入れ装置
WO2012147417A1 (ja) * 2011-04-26 2012-11-01 イーグル工業株式会社 半導体製造装置用溶接ベローズ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1324931A (fr) * 1961-12-01 1963-04-26 Aiguille pour machines à tisser à alimentation continue en trame
US3159184A (en) * 1962-11-13 1964-12-01 Draper Corp Tape motion for shuttleless looms
LU58543A1 (enExample) * 1969-04-30 1971-06-22
CH610361A5 (enExample) * 1976-10-01 1979-04-12 Rueti Ag Maschf
DE2902729C2 (de) * 1979-01-25 1982-04-01 Lindauer Dornier Gmbh, 8990 Lindau Schußfadeneintragorgan für schützenlose Webmaschinen

Also Published As

Publication number Publication date
PT74898A (en) 1982-06-01
CS228926B2 (en) 1984-05-14
IT8121738A0 (it) 1981-05-15
IT1135816B (it) 1986-08-27
BR8202813A (pt) 1983-04-26
EP0065231A1 (en) 1982-11-24
ATE18444T1 (de) 1986-03-15
JPS584848A (ja) 1983-01-12
DE3269574D1 (en) 1986-04-10
JPH0375653B2 (enExample) 1991-12-02
PT74898B (en) 1983-11-30
DD202463A5 (de) 1983-09-14
ES512116A0 (es) 1983-04-01
ES8305439A1 (es) 1983-04-01
MX157727A (es) 1988-12-13

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IT1227335B (it) Mezzi per guidare il moto di pinze di alimentazione della trama all'interno del passo di telai di tessitura senza navette
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