US3908710A - Weaving machine - Google Patents

Weaving machine Download PDF

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Publication number
US3908710A
US3908710A US459868A US45986874A US3908710A US 3908710 A US3908710 A US 3908710A US 459868 A US459868 A US 459868A US 45986874 A US45986874 A US 45986874A US 3908710 A US3908710 A US 3908710A
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United States
Prior art keywords
weft
reed
catching
clamping
channel
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Expired - Lifetime
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US459868A
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English (en)
Inventor
Mullekom Hubert Peter Van
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Machinefabriek L te Strake NV
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Strake Maschf Nv
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    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/3073—Detection means therefor
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/308—Stretching or holding the weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions

Definitions

  • the invention relates to a weaving machine of the type in which at least at one side a weft inserting device is provided and at the other side a device is provided, carried by the reed and having a catching means and a clamping means cooperating therewith, for receiving, catching and tensioning the weft threads launched through the weaving shed.
  • Such a weaving machine is described in Dutch pat. application no. 7016178.
  • the catching means which, in combination with the clamping means, serves to tension a weft length inserted into the weaving shed by the welf inserting device at the moment of the beating up by the reed, has a fixed position on the reed beam, viz. at the end of the tunnel delimited by the plurality of substantially U-shaped reed blades.
  • the invention aims at improving said machine so that smaller cloth widths may be woven on a machine adapted for a predetermined maximum cloth width, while retaining the tensioning function during the beating up by the reed with correspondingly shorter weft lengths.
  • a guiding piece mounted on the reed is adjustable in the weft direction and is provided with a receiving channel situated in the insertion path of the weft yarn, which channel deviates at its end remote from the weft inserting device into the beating up direction of the reed and is open towards the beating up side along its complete length, the catching means being positioned in front of the deviated receiving channel end and being movable from a receiving position, corresponding with the retracted reed position, in the weft direction relative to the clamping means which is also carried by the reed towards a damping position corresponding with the beating up position of the reed.
  • the device comprising the catching means and the clamping means may be shifted relative to the reed, such that said device is located at a shorter distance from the weft inserting device, and shorter weft lengths may be used.
  • a sucking nozzle is positioned at the side remote from the weft inserting device, said nozzle serving to suck the leading end of an inserted weft thread, and, after the inserted weft thread has been beaten up by the reed into the cloth and subsequently the weft end projecting beyond the edge of the cloth has been cut off, to suck off said end.
  • a weaving machine in which for inspecting purposes at the side remote from the weft inserting device a weft detection device is provided which mainly comprises a light source and a light sensitive resistance cooperating therewith, the light source being provided in a channel opening into the guiding channel for the weft thread, and the light sensitive resistance communicating through a second channel with the thread guiding channel opposite to the opening of the light source channel, in order to receive a quantity of light which changes when a weft thread passes.
  • a thread detection device has been provided such that the channels containing the light source and the light sensitive resistance open into the receiving channel in the guiding piece.
  • FIG. 1 is a diagrammatic perspective view of part of a weaving machine according to the invention.
  • FIG. 2 is a vertical section of a slightly modified form of reed, taken just outside the edge of the warp sheets.
  • FIG. 3 is an elevation of the catching means and the clamping means as seen in the warp direction, looking from the left in FIG. 2;
  • FIG. 3a is a fragmentary plan view of the catching means and the clamping means of FIG. 3;
  • FIG. 4 is an elevation of a portion of the reed and the guiding piece, slidably mounted thereon and accommodating the thread detection means;
  • FIG. 5 is a wiring diagram of the thread detection means and FIGS. 6-8 are schematical plan views showing three consecutive stages in the cooperation between the' catching means and the clamping means.
  • the reference numbers 1 and 2 each indicate a side portion of the frame of the weaving machine.
  • the reed, indicated at 3 is swingable in the direction of the arrow I around a pivot shaft (not shown) between a retracted position (as shown in the drawing) and a beating up position.
  • the reed proper is formed in a known manner by a series of reed blades 4 positioned closely adjacent each other in the transverse direction of the machine, said reed blades being at their lower ends received in the reed beam 5 or 5a and at their upper ends projecting into a rail 6.
  • the weaving shed has been indicated at 7 and is delimited by the upper warp 8, the lower warp 9 and the reed blades 4.
  • the cloth that has already been woven is indicated at 10 and extends above the temple 12.
  • the heating up line is indicated at 13, e.g. the line along which a weft inserted through the weaving shed is beaten up into the cloth by the reed in its operative beating up position.
  • the weft insertion may be effected by means of a flowing fluid, such as pressurized air. Accordingly a blowing nozzle 14 is applied at one side of the weaving machine.
  • the transport of a weft launched by the blowing nozzle 14 in fact takes place through the tunnel 15 which is delimited by U-shaped notches in the reed blades 4 which notches are open in the direction of the beating up line 13.
  • the transport of the weft through the wcaving shed and through the reed tunnel 15 respectively may, particularly with the larger weaving widths, be assisted by means of intermediate blowing nozzles carried by the reed. For the sake of clarity such auxiliary blowing nozzles are not shown.
  • a guiding piece 16 or 160 is mounted at the end of the reed remote from the blowing nozzle 14 .
  • Said guiding piece has a projecting foot 17 or 170 engaging in a corresponding longitudinal groove of the reed beam 5 or 5a and is fixed by means of a clamp 18 slidably engaging the rail 6.
  • a projecting portion 19 of the guiding piece fits in the reed tunnel 15.
  • FIG. 2 is a vertical section which shows the side of the guiding piece 160 that faces toward the blowing nozzle 14.
  • FIG. 1 shows the side facing away from the blowing nozzle 14 of a slightly modified form of guiding piece 16.
  • the guiding piece 16 has a rectangular projecting foot 17 that fits under a rectangular shoulder of the reed beam 5, whereas in FIG. 2 the guiding piece 16a has a rounded foot 17a fitting in a rounded groove formed in the reed beam 5a.
  • the position of the guiding piece along the reed beam can be adjusted to fit a different width of cloth by first loosening the clamp 18, then sliding the guiding piece to a new position along the reed beam, and then retightening the clamp 18 on the rail 6.
  • opening The guiding piece portion 19 is provided with a catching channel 20, of which the end (FIG. 2) facing the blowing nozzle 14 opens into the reed tunnel and of which the other end is deviated into the beating up direction of the reed and ends in an opening 200 (FIG. 1). Further the catching channel 20 is open along its full length towards the beating up line 13 because of the presence of a slot 201).
  • the guiding piece 16 may be fixed on the reed at a greater or smaller distance from the blowing nozzle 14.
  • a block 21 is slidably mounted along the lower side of the reed beam 5 or 50 (see also FIGS. 2 and 3) and can be secured in place in any desired position along the reed beam by means ofa set screw 21a mounted in an upstanding bracket 21b of the block 21.
  • the block 21 carries the catching means 22 and the clamping means 23 cooperating therewith.
  • the catching means 22 and the clamping means 23 are pivotally mounted around a common shaft 24 mounted in the bracket 21b on the block 21 and are mutually coupled by a spring 25 tending to pivot the two means toward one another into the clamping position.
  • FIG. 3 shows the catching means 22in the weft end receiving position.
  • the receiving eyelet 30 of the the catching means 22 is direction opposite the opening 20:! of the catching channel 20 in the guiding piece 16, and lies in a plane which is slightly spaced in the beating up directio from the opening 20a. Therefore the leading end of a weft inserted by the blowing nozzle 14 into the weaving shed will be deviated by the guiding piece 16 into the beating up direction of the reed or the warp direction and will thereby extend through the receiving eyelet 30 (see the stage according to FIG. 6).
  • This extension of the leading end of the weft through the eyelet 30 is promoted in that at the side of the eyelet 30 remote from the channel oepning 20a the receiving end ofa suction nozzle is positioned.
  • This suction nozzle which may be constituted by a simple tubular nozzle 31, is carried on the slidable block 21 by means of clamps 32 and 33 secured to the bracket 21b, and therefore moves together with the reed.
  • the suction nozzle 31 is shown in side elevation in FIG. 2.
  • FIG. 3 is a detail in that it is an elevation showing only the catching means and the clamping means, looking from the left in FIG. 2.
  • the suction nozzle 31 is not present in FIG. 3, but the location of the suction nozzle, 31 is indicated by shadow lines in FIG. 3.
  • the clamping means 22 is provided with a thickened clamping head 34.
  • the rod 28 When the reed is in its retracted position, the rod 28 is under tension, and thecatching means 22 is thereby pulled toward the right in FIG. 3, away from the clamping means 23.
  • the abutment screw 26 prevents the clamping means 23 from following the catching means 22 as the catching means 22 is pulled to the right in FIG. 3 by the rod 28.
  • An ejector blade 35 extends through and is movable in a vertical slot 35a which is formed in the thickened clamping head 34 of the catching means 22.
  • the ejector blade 35 is pivotally mounted on a projecting arm 23a of the clamping means 23. Fixed in the end of the blade 35 is a laterally projecting pin 36 which is guided in a vertical groove 37 cut in one side of the slot 35a which is formed in the clamping head 34.
  • the means 22 and 23 When the reed is again retracted from the beating up position, the means 22 and 23 first move together to the right (as seen in FIG. 3) until the clamping means 23 again abuts the abutment screw 26, whereafter the catching means 22 alone is pulled further to the right by the rod 28. Thereby the action of the groove 37 on the pin 36 causes the ejector blade 35 to move upwardly. The concave upper side of the blade 35 thus engages the weft thread end, and causes said end to slide away over the upper side of the clamping portion 34 and to be completely sucked into the sucking nozzle 31 as shown in FIG. 8.
  • Said weft thread end then does not form an obstruction for the next weft and may be cut off at this moment by energization of the elect-rically operated cutting device 38, which is similar to the conventional cutting device 38a used for cutting the weft thread from the thread supply, whereafter the weft thread end is discharged by the sucking nozzle 31.
  • the light signal obtained in this way forms an indication that a weft has actually been inserted from the other side of the weaving machine.
  • Said light signal may be transformed, as indicated in the diagram of FIG. 5, by an amplifier 27 into an electric signal which is required to keep energized the drive of the weaving machine.
  • a weaving machine of the type having at least at one side a weft inserting-device and at the other side, carried by the reed, a catching means and a clamping means cooperating therewith, for receiving, catching and tensioning weft threads launched through a weaving shed, characterized by a guiding piece mounted to the reed adjustable in the weft direction and provided with a receiving channel situated in the insertion path of the weft thread, which channel deviates at its end remote from the weft inserting device into the beating up direction of the reed and has an opening on its beating up side extending along its complete length, the catching means being spaced in the beating up direction from the deviated end of the receiving channel, and being movably mounted on the reed for movement, generally parallel to the shed, from a weft threadreceiving position to a clamping position in which the weft thread is clamped between the catching means and the clamping means, and mechanism actuated by movement of the ree
  • a weaving machine in which the weft inserting path is determined by a tunnel which is longitudinally open towards the beating up line and delimited by a plurality of substantially U.-shaped reed blades, and wherein the guiding piece comprises a filling piece which is adjustably mounted in said tunnel.
  • said catching means comprises a catching eyelet having an escape aperture for the weft thread and a clamping surface cooperating with the clamping means, an ejection means being provided which is movable between a lower and an upper position, and having mechanism for moving the ejection means from its lower position to its upper position during movement of the catching means from its clamping position back to its receiving position, thereby ejecting the weft thread through the escape aperture of the eyelet.
  • a weaving machine characterized in that the receiving eyelet is formed at the end of a lever which is pivotable around a shaft substantially extending in the warp direction, around which shaft also the clamping means constituted by a lever is pivotable from an abutting position into the weft direction together with the catching means brought into the clamping position.
  • a weaving machine in which a cutting device for cutting the weft thread ends pro- 40 jecting beyond the relative cloth edge is provided at the side remote from the weft inserting device and wherein further a sucking nozzle is provided for sucking in the head ends of the inserted weft threads and subsequently sucking off the cut thread ends, characterized in that the sucking nozzle is provided with its sucking opening in the deviated portion of the path of the weft yarn, adjacent to the catching means and is adjustable in the transverse direction of the machine together with the guiding piece, the catching means and the clamping means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US459868A 1971-06-21 1974-04-11 Weaving machine Expired - Lifetime US3908710A (en)

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Application Number Priority Date Filing Date Title
NL7108526A NL7108526A (nl) 1971-06-21 1971-06-21

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978893A (en) * 1974-09-26 1976-09-07 Enshu, Limited Apparatus for detecting success in weft insertion of shuttleless looms
FR2353664A1 (fr) * 1976-05-31 1977-12-30 Rueti Te Strake Bv Perfectionnements aux metiers a tisser
US4194538A (en) * 1979-01-08 1980-03-25 Borodin Valerian A Weft thread gripping mechanism for a loom with a travelling-wave shed and a disk-type beat-up motion
US4194537A (en) * 1976-10-04 1980-03-25 Vyzkumny Ustav Bavlnarsky Arrangement for guiding a weft thread end under tension toward a fabric fell in travelling-wave looms
FR2469484A1 (fr) * 1979-11-14 1981-05-22 Moessinger Albert Procede et dispositif pour l'insertion des fils de trame sur un metier a tisser
FR2488293A1 (fr) * 1980-08-11 1982-02-12 Rueti Te Strake Bv Procede pour inserer et etirer une longueur mesuree de fil de trame dans la foule d'un metier a tisser sans navette, et metier a tisser sans navette
US4320785A (en) * 1979-02-05 1982-03-23 Adolph Saurer Limited Mechanism on shuttleless looms for the transfer of the end of the weft yarn
WO1983002466A1 (en) * 1982-01-16 1983-07-21 Griffith, John, Dalton Yarn holding device
US4415008A (en) * 1980-10-14 1983-11-15 Loepfe Brothers Limited Device for monitoring the weft thread travel on an air jet weaving machine
EP0133153A1 (de) * 1983-07-11 1985-02-13 Rüti-Te Strake B.V. Vorrichtung zur Befestigung eines Hilfsorgans an das Riet einer schützenlosen Webmaschine
EP0148292A1 (de) * 1984-01-07 1985-07-17 Maschinenfabrik Sulzer-Rüti Ag Schussfadenbeherrschungsanordnung für Reihenfachwebmaschinen
EP0333930A2 (de) * 1988-03-22 1989-09-27 Lindauer Dornier Gesellschaft M.B.H Luftdüsen-Webmaschine
EP0511939A1 (de) * 1991-04-30 1992-11-04 Sulzer RàœTi Ag Pneumatische Schusseintrags-Vorrichtung und Webmaschine mit einer derartigen Vorrichtung
WO2004059055A1 (de) * 2002-12-20 2004-07-15 Picanol N.V. Vorrichtung und verfahren zum strecken
WO2011000561A1 (en) 2009-07-01 2011-01-06 Picanol N.V. Device and method for catching and stretching weft threads in weaving machine
WO2018099662A1 (en) * 2016-11-29 2018-06-07 Picanol Waste end stretching device for a weaving machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7206367A (nl) * 1972-05-10 1973-11-13

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580293A (en) * 1967-09-15 1971-05-25 Strake Maschf Nv Weaving machine
US3658098A (en) * 1970-10-22 1972-04-25 Hubert Peter Van Mullekom Weaving machine
US3744533A (en) * 1971-08-03 1973-07-10 Teijin Ltd Adjustment of filling tension in fluid jet loom and apparatus thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580293A (en) * 1967-09-15 1971-05-25 Strake Maschf Nv Weaving machine
US3658098A (en) * 1970-10-22 1972-04-25 Hubert Peter Van Mullekom Weaving machine
US3744533A (en) * 1971-08-03 1973-07-10 Teijin Ltd Adjustment of filling tension in fluid jet loom and apparatus thereof

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978893A (en) * 1974-09-26 1976-09-07 Enshu, Limited Apparatus for detecting success in weft insertion of shuttleless looms
FR2353664A1 (fr) * 1976-05-31 1977-12-30 Rueti Te Strake Bv Perfectionnements aux metiers a tisser
US4194537A (en) * 1976-10-04 1980-03-25 Vyzkumny Ustav Bavlnarsky Arrangement for guiding a weft thread end under tension toward a fabric fell in travelling-wave looms
US4194538A (en) * 1979-01-08 1980-03-25 Borodin Valerian A Weft thread gripping mechanism for a loom with a travelling-wave shed and a disk-type beat-up motion
US4320785A (en) * 1979-02-05 1982-03-23 Adolph Saurer Limited Mechanism on shuttleless looms for the transfer of the end of the weft yarn
FR2469484A1 (fr) * 1979-11-14 1981-05-22 Moessinger Albert Procede et dispositif pour l'insertion des fils de trame sur un metier a tisser
FR2488293A1 (fr) * 1980-08-11 1982-02-12 Rueti Te Strake Bv Procede pour inserer et etirer une longueur mesuree de fil de trame dans la foule d'un metier a tisser sans navette, et metier a tisser sans navette
US4415008A (en) * 1980-10-14 1983-11-15 Loepfe Brothers Limited Device for monitoring the weft thread travel on an air jet weaving machine
WO1983002466A1 (en) * 1982-01-16 1983-07-21 Griffith, John, Dalton Yarn holding device
US4570683A (en) * 1982-01-16 1986-02-18 Sulzer Brothers Limited Yarn holding device
EP0133153A1 (de) * 1983-07-11 1985-02-13 Rüti-Te Strake B.V. Vorrichtung zur Befestigung eines Hilfsorgans an das Riet einer schützenlosen Webmaschine
EP0148292A1 (de) * 1984-01-07 1985-07-17 Maschinenfabrik Sulzer-Rüti Ag Schussfadenbeherrschungsanordnung für Reihenfachwebmaschinen
EP0333930A2 (de) * 1988-03-22 1989-09-27 Lindauer Dornier Gesellschaft M.B.H Luftdüsen-Webmaschine
US4958664A (en) * 1988-03-22 1990-09-25 Lindauer Dornier Gesellschaft Gmbh Air jet loom with a jacquard frame and a variable drawing-in width
EP0333930A3 (de) * 1988-03-22 1991-12-18 Lindauer Dornier Gesellschaft M.B.H Luftdüsen-Webmaschine
EP0511939A1 (de) * 1991-04-30 1992-11-04 Sulzer RàœTi Ag Pneumatische Schusseintrags-Vorrichtung und Webmaschine mit einer derartigen Vorrichtung
US5224521A (en) * 1991-04-30 1993-07-06 Sulzer Brothers Limited Weft catcher with gripping device
WO2004059055A1 (de) * 2002-12-20 2004-07-15 Picanol N.V. Vorrichtung und verfahren zum strecken
US20060151047A1 (en) * 2002-12-20 2006-07-13 Bamelis Jean M Device and method for stretching
US7559344B2 (en) 2002-12-20 2009-07-14 Picanol N.V. Device and method for stretching
WO2011000561A1 (en) 2009-07-01 2011-01-06 Picanol N.V. Device and method for catching and stretching weft threads in weaving machine
CN102471958A (zh) * 2009-07-01 2012-05-23 必佳乐公司 用于在织机中捕捉和拉伸纬纱的设备和方法
BE1019614A3 (nl) * 2009-07-01 2012-09-04 Picanol Inrichting en werkwijze voor het vangen en strekken van inslagdraden bij weefmachines.
CN102471958B (zh) * 2009-07-01 2014-11-26 必佳乐公司 用于在织机中捕捉和拉伸纬纱的设备和方法
WO2018099662A1 (en) * 2016-11-29 2018-06-07 Picanol Waste end stretching device for a weaving machine
BE1024755B1 (nl) * 2016-11-29 2018-06-27 Picanol Nv Afvaleinde-strekinrichting voor een weefmachine
CN109983166A (zh) * 2016-11-29 2019-07-05 必佳乐公司 用于织机的废料端拉伸装置

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Publication number Publication date
JPS52156B1 (nl) 1977-01-05
NL7108526A (nl) 1972-12-27

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